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4.4. SR 03-20-2017City of Elk — River Request for Action To Item Number Mayor and City Council 4.4 Agenda Section Meeting Date Prepared by Consent March 20, 2017 Justin Femrite, P.E., City Engineer Item Description Reviewed by Special Discharge Permit for Treatment of Landfill Matt Stevens, Chief WW'TF Operator Leachate Reviewed by Action Requested Approve, by motion, Special Discharge Permit for Elk River Landfill, Inc. relating to the temporary disposal and treatment of their landfill leachate. Background/Discussion With the upgrade of our waste water treatment facility, we now have the capacity and ability to treat up to 35,000 gallons of landfill leachate per day. A pilot study was completed in 2016 to assure the plant can handle the leachate loadings while continuing to meet the limits of our discharge permit. The permit, if approved, will allow for the hauling of leachate, via truck, to our sewer system until December 31, 2019. The time between now and the end of 2019 will be used to assure the leachate does not cause any lasting operational challenges to our system and to plan, design and construct a permanent system which the leachate can be pumped directly to our system. This Special Discharge Permit has been reviewed by the city attorney. Financial Impact The permit details the rates that will be charged for treatment of the leachate. All hauling and tank rental costs will be paid by the permittee. Attachments • Elk River Landfill, Inc. Special Discharge Permit P a w E A E U a r NaA f RE] Special Discharge Permit SD -00001 Elk River Landfill, Inc. Issue Date: March 20, 2017 Expiration Date: December 31, 2019 Special Wastewater discharge Permit City of Elk River Wastewater Treatment Facility 208 Railroad Dr NW, Elk River, Minnesota 55330 763-635-1000 PERMITTEE NAME: Elk River Landfill, Inc. FACILITY ADDRESS: 22460 US Highway 169, Elk River, Minnesota 55330 PROCESS DISCHARGE: Leachate from Elk River Landfill ISSUE DATE: March 20, 2017 EXPIRATION DATE: December 31, 2019 The above named Permittee is hereby authorized to discharge leachate from the above identified facility into the City of Elk River sewerage system in accordance with the effluent limitations, monitoring requirements and other conditions set forth in this permit. All discharges authorized herein shall be consistent with the terms and conditions of this permit. The discharge of any pollutant identified in this permit more frequently than or at a level in excess of that authorized shall constitute a violation of the permit and ability of the City to terminate immediately. The Permittee shall not discharge after the date of expiration. If the Permittee wishes to continue to discharge after this expiration date, a permanent piped system shall be in place and operational which transports the leachate from the landfill directly to an agreed upon location in the sewerage system. In the event of any accidental discharge, spill, or bypass, the Permittee shall IMMEDIATELY notify the Minnesota State Duty Officer at 800-442-0798 and report the facility address and other pertinent information. The Permittee shall also immediately report the same information to the wastewater treatment facility (763-635-1171). If no one is there, then the Permittee must contact the City of Elk River Police Dispatch (911). Issued by the City of Elk River By: By: City of Elk River Community Operations Director Permittee Name City of Elk River Wastewater Treatment Facility Chief Operator Permittee agrees to abide by all the terms and conditions of this permit and to abide by all applicable City of Elk River ordinances. Elk River Landfill, Inc. By: (Signature) I 1 Print Name,. � 1N) i Arria nY� Phone bs - 1JPage Address: Title; V- br_�ai lCr M �AF!EK- Part 1— APPLICABLE DISCHARGE LIMITATIONS Section 1 — City of Elk River Pretreatment Standards A. The Permittee shall comply with all applicable regulations and standards contained in Chapter 78: Article III, of the City of Elk River Municipal Code. Section 2 — Specific Applicable Discharge Limitations for Permittee A. Permittee Limitations: All wastewater discharged to the City of Elk River Wastewater system by the Permittee shall not exceed the following discharge limitations: 35,000 gallons of leachate per day with concentration parameters that are consistent with those identified in the Waste Management Leachate Study, June 2015 (Attachment A) and the Waste Management Leachate Pilot Study, December, 2016 (Attachment B). B. Other Requirements: 1. The hauled in leachate shall be discharged to a receiving station, constructed and maintained by the Permittee, north of the City of Elk River Maintenance facility located at 1900 Proctor Road. This location is shown on Attachment C PART 2 — MONITORING AND REPORTING REQUIREMENTS Section 1— Monitoring and Sampling Requirements The following are the specific monitoring point location -(s), sampling collection frequency, volume determination, sample compositing, and if necessary the calculation methods required by this Permit. Representative wastewater samples shall be collected by the Permittee in accordance with the following requirements: A. The Permittee shall monitor its wastewater discharges subject to regulations under Part 1 of this permit to ascertain compliance with the applicable limitations. The permittee shall provide monitoring reports for its wastewater four times per year showing compliance with all parameters as listed on Page 6 of this agreement. The City shall have the ability to order additional testing, or select trucks from which testing will be completed. B. Sampling shall conform to the following guidelines: 1. Each sample shall be properly preserved and must meet the appropriate holding times. 2. For grab samples to be collected and analyzed, a minimum of 4 grab samples shall be collected and composited into a single grab sample for analysis. 3. Results shall be reported to the City of Elk River Wastewater Treatment Facility Chief Operator. C. Analysis of samples collected shall be performed in accordance with 40 CFR, Part 136 and amendments thereto. Holding and preservation of collected samples shall be as specified in 40 CFR, Part 136 and amendments thereto. Pollutant analyses are to be performed by an accredited laboratory certified by the State of Minnesota. 21 Page D. Definitions: 1. Composite Sample. A sample that is collected over time, formed either by continuous sampling or by mixing discrete samples. The sample may be composited either as a time composite sample: composed of discrete sample aliquots collected in one container at constant time intervals providing representative samples irrespective of stream flow: or as a flow proportional composite sample: collected either as a constant sample volume at time intervals proportional to stream flow, or collected by increasing the volume of each aliquot as the flow increases while maintaining a constant time interval between the aliquots (minimum of 4 samples per hour). 2. Grab Sample. An individual sample collected in less than 15 minutes, without regard for flow or time. Section 2 Reporting Requirements A. Monitoring reports (original laboratory report) shall be submitted quarterly (4 times per year) to the City of Elk River Wastewater Treatment Facility Chief Operator. Reporting Period Report Due to City by: January 1— March 31 April 30 April 1 - June 30 July 31 July 1— September 30 October 31 October 1— December 31 January 31 All reports required by this permit shall be submitted to the City of Elk River, Wastewater Treatment Facility Chief Operator, 248 Railroad Dr. NW, Elk River, MN 55330. PART 3 — GENERAL CONDITIONS A. City of Elk River has approved the discharge of leachate from Elk River Landfill, Inc. into the City of Elk River Wastewater sewerage system on a routine basis. This discharge is subject to all appropriate operational and financial conditions set forth with this agreement. B. Records of loads hauled to the City of Elk River Wastewater Treatment Plant shall be maintained by the Permittee. C. The "Hauled in Waste Disposal Record for Elk River Landfill, Inc." form attached to this permit shall be used for recording the delivery date and volume of every truck load to the City. This form shall be sent monthly to the City for billing purposes to the address as described in Part 2, Section 2. B. This disposal record form shall be submitted by the 15th of every month to report the previous months discharge. D. The quantity of wastewater discharged shall not exceed the limit detailed in Part 1, Section 2.A of this agreement and be discharged between the hours of 5:00 AM and 5:00 PM Monday through Sunday. Non business day, business hours (M -F 6:OOam-3:OOpm) hauling will be permitted if no operational problems or public concerns develop. If problems or concerns arise, the City will work with the Permittee, to amend hauling hours that work for both parties. The waste hauler shall discharge contents into the Permittee provided storage tank and be metered into the City system as determined by the WWTF Chief Operator. E. In non- emergency situations, all contact with the City of Elk River shall be directed towards the Wastewater Treatment Facility Chief Operator, 248 Railroad Dr. NW, Elk River, MN 55330. 3J Page F. The Permittee shall not knowingly make any false statement, representation or certification in a record, report, plan or other document submitted to the City of Elk River. G. Permittee shall not discharge any material which is likely to cause interference, pass-through, or operational problems of the City of Elk River, Wastewater Treatment Facility or which violates applicable state or federal laws or requirements. H. The Permittee shall not increase the use of potable or processed water, or, in any way, attempt to dilute a discharge as a partial or complete substitute for adequate treatment to achieve compliance with the limitations contained in this permit. I. The Permittee shall retain for three years any records, documents, reports, correspondence and any summaries thereof relating to monitoring, sampling, and chemical analyses made by or on behalf of any discharger in connection with its discharge. J. The terms and conditions of this permit may be subject to modification by the City of Elk River at any time as limitations or requirements as identified in Chapter 78, Article III of the City of Elk River Municipal Code, or modified if other just cause exists. Any modification which results in new conditions in the permit shall include a reasonable time schedule for compliance if necessary. K. All reports required by this permit shall be signed by a principal executive officer of the Permittee, or his/her designee, Complete and sign the enclosed Designation of Authorized Representative for Submittal of Industrial Waste Discharge Reports form and mail to the WWTF. L. All sampling and analysis required by this permit is the responsibility of the Permittee. The costs of additional sampling and analysis performed by the City of Elk River or by a city contracted laboratory which is required for investigation of plant upsets, violation or regulations or regulatory agencies will be charged back to the Permittee. M. The Permittee is found to be in non-compliance if a measured or calculated value falls outside the allowable values in the Table as described in Part 1 Section 2A of this Permit. A penalty will apply as determined by the City for costs incurred to handle the violation. N. The Permittee shall notify the Wastewater Treatment Facility Chief Operator before discharging to the city system. 0. The City of Elk River reserves the right to restrict the discharge of leachate to specific time periods in order to avoid system overloads, treatment plant upsets, odors or violations. P. City of Elk River reserves the right at any time, for any reason, to discontinue privileges to discharge to our facilities. As the plant nears full capacity or the leachate proves to adversely affect the treatment facility, its effluent quality, its biosolids production, and the receiving stream, the acceptance and treatment of the landfill leachate would have to be terminated. Q. The User must have an alternative disposal site in the event the City of Elk River WWTF is unable to accept the wastewater. The name and location of the alternate site must be furnished to the City. R. If the City of Elk River determines, in its sole discretion, to restrict or terminate the right to discharge the leachate to City's facilities, the City shall have no liability whatsoever to the User for any additional costs to User as a result of the User's need to find an alternate site for disposal of the leachate. 41 Page PART 4 — FEES FOR DISPOSAL A. An annual Special Discharge Permit Fee of $1,000 will apply and shall be paid at time of execution of the agreement. (2017, 2018, 2019 — Three years - $3,000) This fee is expected to cover increased administration cost of the City for review of laboratory reports and billings. B. Charges for treatment will be based upon flow provided the leachate concentrations are consistent with loadings set forth in Attachments A and B. C. Costs for treatment areas follows: Year Cost per Gallon of Leachate 2017 $0.0098 2018 $0.0110 2019 $0,0120 51 Page Sampling Requirements Sample Location: Onsite Holding Tank or Truck Load Analytical Methods shall meet EPA protocol (Code of Federal Regulations Part 136). Minimum Sample Parameter Description Collection Frequency Units Arsenic, Cadmium, Chromium, Copper, Lead, Molybdenum, Four Samples Per Year mg/I Nickel, Selenium, Silver, Zinc Mercury Four Samples Per Year ug/I Total Cyanide One Sample Per Year mg/I Ammonia (as Nitrogen) Four Samples Per Year mg/l Total Kjeldahl Nitrogen Four Samples Per Year mg/l Total Suspended Solids Four Samples Per Year mg/I pH Four Samples Per Year SU TBOD 5 Four Samples Per Year mg/I Phosphorus Four Samples Per Year mg/I Bicarbonates Four Samples Per Year meq/L Chloride Four Samples Per Year mg/I Hardness Four Samples Per Year mg/I TDS Four Samples Per Year mg/I Specific Conductance Four Samples Per Year Umhos/cm 61 Page E LTCII Iii E I,...•l IWC , Consulting Engineers & Surveyors ISI 00 WASTE MANAGEMENT LEACHATE STUDY CITY OF ELK RIVER MINNESOTA B M I PROJECT N O. T21.109643 JUNE 2015 1 Waste Management Leachate Study for Elk River, Minnesota I hereby certify that this plan, specification, or report was prepared by me or under my direct supervision, and that I am a duly Licensed Professional Engineer under the laws of the State of Minnesota. By: PQ— Seth Peterson, P.E. License No. 26468 Date: June 11, 2015 TABLE OF CONTENTS EXECUTIVE SUMMARY SECTION 1.0 INTRODUCTION 1.1 Purpose...........................................................................................................................5 1.2 Report Organization.......................................................................................................5 SECTION 2.0 ELK RIVER WASTEWATER TREATMENT AND CHARACTERISTICS 2.1 Elk River Wastewater Treatment Facilities...................................................................6 2.2 Service Area...................................................................................................................6 2.3 Flow...............................................................................................................................6 2.4 Load...............................................................................................................................8 2.5 Allocated Treatment Capacity........................................................................................9 SECTION 3.0 WASTE MANAGEMENT LEACHATE CHARACTERISTICS 3.1 Waste Management Leachate Collection and Storage Facilities.................................11 3.2 Typical Landfill Leachate Characteristics....................................................................11 3.3 Elk River Landfill Leachate Characteristics................................................................11 SECTION 4.0 LEACHATE TREATMENT EVALUATION 4.1 General.........................................................................................................................14 4.2 Collection System Concerns........................................................................................14 4.3 Hydraulic and Organic Treatment Capacity.................................................................14 4.4 Biological Treatment Performance..............................................................................15 4.5 UV Disinfection System Performance.........................................................................16 4.6 Biosolids Characteristics and Quantity........................................................................17 4.7 Comparative Combined Treatment Faciltiies..............................................................17 SECTION 5.0 LEACHATE CONVEYANCE ALTERNATIVES 5.1 General.........................................................................................................................19 5.2 Forcemain Options.......................................................................................................19 5.3 Flow Monitoring..........................................................................................................19 SECTION 6.0 RECOMMENDATIONS AND IMPLEMENTATION 6.1 Recommended Wastewater Treatment Improvements................................................21 6.2 Permitting.....................................................................................................................21 6.3 Implementation Schedule.............................................................................................22 City of'Elk River, Minnesota — T21.109643 Page i Elk River/Waste Management Leachate Study Prepared by Bolton & Menk, Inc. LIST OF TABLES 1 Elk River Wastewater Treatment Facility Influent Flow.........................................7 2 Elk River Historical Monthly Influent Load............................................................8 3 Allocation of WWTF Capacity..............................................................................10 4 Elk River Landfill Leachate Characteristics..........................................................12 5 Carbon:Nitrogen:Phosphorus Ratios.....................................................................16 6 Theoretical Performance of the Existing Ultraviolet Disinfection System at Reduced UV Transmittance due to Leachate Blending....................................17 7 Summary of Municipal WWTF Receiving Leachate from WM Landfills ............18 LIST OF FIGURES 1 Urban Service Area....................................................................................Follows 6 2 Historical Elk River WWTF Flow..........................................................................7 3 Historical Elk River WWTF CBOD5 Load..............................................................9 4 Leachate Forcemain Options....................................................................Follows 19 APPENDICES Appendix A Memorandum of Understanding — Landfill Leachate and Municipal Biosolids Appendix B National Pollutant Discharge Elimination System (NPDES) Permit MN 0020788 Appendix C Elk River Landfill Fact Sheet Appendix D Waste Management Elk River Landfill Leachate Data (2011-2014) Appendix E Excerpts from EPA Local Limits Development Guidance Appendix F Preliminary Opinion of Estimated Project Cost Appendix G Flow Monitoring Results City of Elk River, Minnesota —121.109643 Page ii Elk RiverlWaste Management Leachate Study Prepared by Bolton & Menk, Inc. EXECUTIVE SUMMARY The following Leachate Study is designed to evaluate the impact of landfill leachate on the Elk River treatment processes and alternatives to convey the leachate through the collection system. Completion of a preliminary engineering report is step 1 as outlined in the Memorandum of Understanding between the City of Elk River and Waste Management of Minnesota, Inc. for landfill leachate and municipal biosolids disposal. The study identifies the potential impact on treatment capacity, biological treatment inhibition, and ultraviolet disinfection as well as conveyance options and recommended next steps. Treatment Capacity Current influent flow to the Elk River Wastewater Treatment Facility averages approximately 1.2 million gallons per day (MGD). The proposed 35,000 gallons per day (gpd) leachate discharge will contribute approximately 3 percent of the average daily influent flow which is projected to drop to less than 1 percent when the facility reaches a design average daily flow of 3.98 MGD. Although flow contributions appear to be insignificant, the COD pollutant contribution may exceed the current domestic wastewater carbonaceous biochemical oxygen demand (CBODs) load of approximately 3,000 lb CBOD5/day. The leachate COD concentration increased in 2013 and 2014 with COD spikes as high as 12,500 and 12,800 mg/L. At 35,000 gpd, the associated COD load of approximately 3,700 lb COD/day would have a significant impact on the design treatment capacity of 7,720 lb CBOD5/day. Typical COD values in 2011 and 2012 ranged from 1,500-2,500 mg/L or an estimated COD load of 440-730 lb/day. Nitrogen contributions from the leachate are estimated at 1,100-1,200 mg/L or approximately 3501b/day. This would account for approximately 25 percent of the design influent nitrogen load of 1,360 lb/day. Additional information is recommended regarding the projected trend in COD concentrations and the typical C13OD5:COD ratio in the leachate. City of Elk River, Minnesota —121.109643 Page 1 Elk River/Waste Management Leachate Study Prepared by Bolton & Menk, Inc. Biological Treatment Evaluation of the treatability of combined municipal wastewater and leachate utilized the Environmental Pollution Agency (EPA) Local Limits Development Guidance. This document provides guidance regarding toxic and inhibitory compounds as well as anticipated removal efficiencies through the typical biological treatment processes. Comparison of the EPA documented inhibition values (Appendix G of Local Limits Development Guidance) and the anticipated blended pollutant concentrations identified only one parameter that approaches the threshold level for inhibition. The reported range of zinc inhibition is 0.3-10 mg/L for activated sludge and 0.08-0.5 mg/L for nitrification. Zinc concentrations in the blended is wastewater are projected at 0.2-0.4 mg/L when only accounting for mass received in the leachate. Zinc would also be a parameter of concern if the biosolids disposal alternative of land application was desired. Complete nitrification of the estimated influent nitrogen concentration of 90-100 mg/L will result in an effluent nitrate concentration in the similar range. If denitrification, (conversion of nitrate to nitrogen gas) is required to meet future total nitrogen limits, supplemental carbon may be required. Future nitrogen limits may be as low as 10 mg/L total nitrogen. Ultraviolet (UV) Disinfection The existing UV disinfection system is designed to achieve a dose of 30,000 µWs/cm2 at a peak design flow of 7.0 MGD and a UV transmittance (UVT) of 61 percent. The landfill leachate has a distinct color that reduces the UVT and effectiveness of the UV disinfection system. A bench scale study evaluated UVT reduction with a combination of raw leachate and treated municipal wastewater. A theoretical impact on UV system performance was calculated based on the measured the UVT values of the blended solutions. This conservative evaluation assumes color in the leachate is not removed through the biological treatment process. Results of the UVT evaluation are summarized below. These results indicate the need for pilot testing with activated sludge treatment as the existing UV disinfection system cannot achieve the design UV dose of 30,000 µWs/cm2 with blended flow of less than 5 MGD. City of Elk River, Minnesota —121.109643 Page 2 Elk River/Waste Management Leachate Study Prepared by Bolton & Menk, Inc. Table ESA - Theoretical Performance of the Existing Ultraviolet Disinfection System at Reduced UV Transmittance due to Leachate Blending Influent Flow UV Performance without Leachate Blending UV Performance with 0.035 MGD Leachate Blending (MGD) UVT Dose # lamps Energy UVT Dose # lamps Energy (%) (uWs/cm2) operating (kW) (%) (uWs/cm2) operating (kW) 1.0 61 30,000 36 5.40 16.0 3,500 72 18.00 1.5 61 30,000 36 6.12 21.4 5,700 72 18.00 2.0 61 30,000 36 7.56 26.8 8,490 72 18.00 3.0 61 30,000 72 10.80 37.6 15,668 72 18.00 5.0 61 30,000 72 14.40 59.2 28,700 72 18.00 7.0 61 30,000 72 18.00 61 30,000 72 18.00 Review of Comparable Applications Operation of comparable treatment facilities that blend leachate from Waste Management landfills with municipal wastewater were reviewed to provide assurance regarding the treatability and anticipated impact on performance and color removal expectations. The following is a summary of available data from four of the most similar co -treatment applications. Waste Management operates over 150 landfills with either direct connections or leachate receiving at publically owned treatment works (POTWs). Activated sludge with chemical or biological phosphorus removal is the most common method of treatment. Comparison of the Elk River WWTF and four other facilities currently receiving leachate from other Waste Management landfill are summarized below in Table ES.2. As indicated, only two of the facilities were identified with a similar UV disinfection process and no facility reported operation with leachate contributions to the percent contribution proposed at the Elk River facility. City of Elk River, Minnesota —121.109643 Page 3 Elk River/Waste Management Leachate Study Prepared by Bolton & Menk, Inc. Table ES.2 - Summary of Municipal WWTF Receiving Leachate from WM Landfills Conveyance Options The Leachate Study addresses two alternate forcemain routes from the Waste Management facility to the Elk River Collection System. Option 1 is approximately 4.0 miles and follows Highway 169 while Option 2 is approximately 5.0 miles and follows a route along the Great Northern Trail Corridor. Estimate of probable construction costs range from $1.9 to $2.2 million for a 4 -in unlined forcemain. Recommendations Recommendations following the preliminary evaluation are consistent with the project plan outlined in the Memorandum of Understanding. The projected impacts on allocated treatment capacity and the uncertainty regarding the reduction of color and improved UVT through the biological treatment process should be tested with a pilot scale operation or via truck delivery and metered feed to the facility when the full scale activated sludge process is on-line. The pilot operations are scheduled for November 2015 following completion and start-up of the activated sludge treatment facilities at the Elk River Wastewater Treatment Facility. City of Elk River, Minnesota —121.109643 Page 4 Elk River/Waste Management Leachate Study Prepared by Bolton & Menk, Inc. Elk River, Fergus Falls, Watertown, Fort Atkinson, Port Washington, Parameter MN MN W1 W1 W1 Design Flow 4.54 5.20 2.70 3.10 (MGD) Current Average 1.30 1.80 2.5-3.0 1.7-2.0 1.22 Flow (MGD) Typical Leachate 100,000-200,000 Summer: Flow (gpd) 35,000 12,000 gallon/month 5,700 gpd gallons/day gallons/day 3,500-6,500 Winter: 6,000-12000 gpd gallon/day much lower Percent Leachate 2.7 0.67 0.14-0.21 0.34 0.50-1.00 Treatment Activated Activated Sludge Activated Sludge Activated Sludge Activated Sludge Sludge Bio -P Chem -P Bio -P Chem -P Disinfection Uy Chlorine Uy Chlorine Uy Leachate Color observed. Indicates that color No significant color Color has not been noted. No significant color. Slight Appearance and COD = 5,000- diminished through impact. BOD=240 mg/L hint of color. other 15,000 mg/L the activated sludge COD = not avail. TSS=95 mg/L BOD = not available Characteristics TKN = 1,100- treatment process NH4 = 1,300-1,400 TKN=1,440 mgtL NH4 = 1,400 mg/L 1,200 mg/L mgtL P=8 mg/L P = 9-10 mg/L COD:CBOD5 not known Conveyance Options The Leachate Study addresses two alternate forcemain routes from the Waste Management facility to the Elk River Collection System. Option 1 is approximately 4.0 miles and follows Highway 169 while Option 2 is approximately 5.0 miles and follows a route along the Great Northern Trail Corridor. Estimate of probable construction costs range from $1.9 to $2.2 million for a 4 -in unlined forcemain. Recommendations Recommendations following the preliminary evaluation are consistent with the project plan outlined in the Memorandum of Understanding. The projected impacts on allocated treatment capacity and the uncertainty regarding the reduction of color and improved UVT through the biological treatment process should be tested with a pilot scale operation or via truck delivery and metered feed to the facility when the full scale activated sludge process is on-line. The pilot operations are scheduled for November 2015 following completion and start-up of the activated sludge treatment facilities at the Elk River Wastewater Treatment Facility. City of Elk River, Minnesota —121.109643 Page 4 Elk River/Waste Management Leachate Study Prepared by Bolton & Menk, Inc. SECTION 1.0 INTRODUCTION 1.1 Purpose The City of Elk River owns and operates a mechanical wastewater treatment facility serving the residents of Elk River as well as commercial and industrial users within the community. Upon completion of current facility improvements, a treatment capacity of 4.54 million gallons per day (MGD) will be provided with activated sludge, media filtration, ultraviolet disinfection and land application of anaerobically digested biosolids. Waste Management owns and operates a landfill north of Elk River that generates leachate from both municipal solid waste (MSW) and construction and demolition waste (C&D) at a rate of approximately 35,000 gallon per day (gpd). Actual rates will vary seasonally based on precipitation, however, this evaluation is based on an average daily leachate rate of 35,000 gpd. The leachate is currently stored on-site and transported by truck to the Metropolitan Council wastewater system where it is treatment at a facility with a design capacity of more than 30 MGD. The Elk River landfill was opened in 1972 and is projected to remain open through 2063. This report evaluates the impact of leachate on the Elk River treatment processes and evaluates conveyance alternatives to pump the leachate from the landfill to the existing Elk River collection system. This preliminary engineering report is step 1 as outlined in the Memorandum of Understanding between the City of Elk River and Waste Management of Minnesota, Inc. for landfill leachate and municipal biosolids disposal. A copy of the memorandum of understanding is provided as Appendix A. 1.2 Report Organization To address the treatment facility evaluation the report is organized into the following sections: Section 1: Introduction Section 2: Elk River Wastewater Treatment and Characteristics Section 3: Waste Management Leachate Characteristics Section 4: Leachate Treatment Evaluation Section 5: Conveyance Alternatives Section 6: Recommendations and Implementation City of Elk River, Minnesota —121.109643 Page 5 Elk RiveriWaste Management Leachate Study Prepared by Bolton & Menk, Inc. SECTION 2.0 ELK RIVER WASTEWATER TREATMENT AND CHARACTERISTICS 2.1 Elk River Wastewater Treatment Facilities As indicated previously, the Elk River WWTF is in the construction phase of a facility improvements project designed to provide increased treatment capacity. The improvements are designed for an average wet weather flow of 4.54 MGD, which is 3-4 times greater than current average influent flow and a carbonaceous biochemical oxygen demand (CBODs) load of 7,220 lb/day. When complete, treatment will include mechanical screening, influent flow measurement, grit removal, primary clarification, extended aeration activated sludge, chemical phosphorus removal, final clarification, media filtration, and ultraviolet disinfection. Biosolids management includes anaerobic digestion, storage and land application. 2.2 Service Area The City of Elk River has a land area of approximately 28,000 acres within the city limits which has been delineated into either rural areas or urban service areas. The City provides water and sewer services to residents within the urban service area. Figure 1 is a map of the Elk River boundary and the urban service area. As indicated, Waste Management is located outside the urban service area, but within the Elk River City Limits. 2.3 Flow A summary of monthly average flow to the WWTF for 2006 to 2014 are presented in Table 1. The historical flow variation data is shown in Figure 2. From the observed historical data, the current Average Dry Weather (ADW) flow is approximately 1.1-1.2 MGD and the Average Wet Weather (AWW) flow is typically 1.2-1.5 MGD. The 20 -year projected design AWW flow for the facility is of 4.54 MGD. City of'Elk River, Minnesota — T21.109643 Page 6 Elk River/Waste Management Leachate Study Prepared by Bolton & Menk, Inc. Table 1— Elk River Wastewater Treatment Facility Influent Flow 2009 Average Minimum 30 -day Average Peak Daily Flow Year Annual Flow Month Flow Wet Weather 0 2011 1.194 1.113 1.275 (MGD) (MGD) (MGD) Flow (MGD) 2006 1.143 0.986 1.533 0 2007 1.183 1.162 1.216 0 2008 1.207 1.153 1.292 0 2009 1.243 1.127 1.507 0 2010 1.189 1.158 1.223 0 2011 1.194 1.113 1.275 0 2012 1.196 1.162 1.254 1.91 2013 1.195 1.144 1.234 1.54 2014 1.285 1.194 1.533 4.40 Design Flow -- 3.98 4.54 7.27 Peak hourly 5.00 4.50 4.00 3.50 0 3.00 3 0 2.50 LL 2.00 1.50 1.00 0.50 0.00 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Monthly Average Influent Flow Peak Daily Influent Flow - - -Permitted 30 -day AWW Figure 2 — Historical Elk River WWTF Flow City of Elk River, Minnesota —121.109643 Page 7 Elk River7Waste Management Leachate Study Prepared by Bolton & Menk, Inc. 2.4 Load Historical and design wastewater load for five-day carbonaceous biochemical oxygen demand (CBOD5), total suspended solids (TSS) and phosphorous are presented in Table 2 and Figure 3. Table 2 — Elk River Historical Monthly Influent Load City of'Elk River, Minnesota — T21.109643 Page 8 Elk River/Waste Management Leachate Study Prepared by Bolton & Menk, Inc. Carbonaceous Biochemical Total Suspended Solids Phosphorus Oxygen Demand (CBOD5) (TSS) (P) Year Average Month Max Mo Average Month Max Mo Average Month Max Mo (mg/L) (lb/day) (lb/day) (mg/L) (lb/day) (lb/day) (mg/L) (lb/day) (lb/day) 2006 336 3,198 170 1,623 7.3 69 2007 273 2,691 127 1,253 6.9 68 2008 268 2,704 170 1,083 6.3 64 2009 270 2,794 140 1,449 6.6 68 2010 261 2,585 154 1,528 6.8 68 2011 313 3,117 237 2,359 6.9 68 2012 2013 329 3,274 3,940 299 2,987 4,497 7.6 76 87 2014 293 3,153 4,353 266 2,860 3,520 6.9 74 108 City of'Elk River, Minnesota — T21.109643 Page 8 Elk River/Waste Management Leachate Study Prepared by Bolton & Menk, Inc. 9,000 8,000 7,000 ro -6,000 p 5,000 J Ln n m 4,000 U v 3,000 2,000 1,000 0 IL - 2006 J2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Monthly Average Influent C130D5 (Ib/day) - - -Design CBOD5 Treatment Capacity (Ib/day) Figure 3 — Historical Elk River WWTF CBOD5 Load 2.5 Allocated Treatment Capacity The Elk River Wastewater Treatment Facility capacity is based on approximately 45,000 equivalent residential users. This includes a residential population of 32,875 plus commercial and light industrial contribution with an equivalent residential contribution of 12,125 in current and future unidentified sources. Details regarding the facility design criteria are included in the 2013 Wastewater Treatment Facility Plan for the City of Elk River. Contribution are summarized in Table 3 below. The Waste Management flow and load contributions would be allocated to the future Usage Outside the Urban Service Area. City of Elk River, Minnesota —121.109643 Page 9 Elk River/Waste Management Leachate Study Prepared by Bolton & Menk, Inc. Table 3 - Allocation of WWTF Capacity City of Elk River, Minnesota —121.109643 Page 10 Elk RiverlWaste Management Leachate Study Prepared by Bolton & Menk, Inc. Equivalent AWW CBODs TSS Phos TKN User Class Population (lb/day) (lb/day) (lb/day) (lb/day) (MGD) Existing Users 23,766 2.40 4,077 5,229 144 719 Urban Service Area 12,531 1.26 2,150 2,757 76 380 Outside Urban Service Area 8,703 0.88 1,493 1,914 53 263 Total Design 45,000 4.54 7,720 9,990 273 1,362 City of Elk River, Minnesota —121.109643 Page 10 Elk RiverlWaste Management Leachate Study Prepared by Bolton & Menk, Inc. SECTION 3.0 WASTE MANAGEMENT LEACHATE CHARACTERISTICS 3.1 Waste Management Leachate Collection and Storage Facilities Waste Management is located north of the current Elk River urban service area as indicated in Figure 1. The subgrade surface below the landfill cells slopes to allow leachate to be collected in a perforated high density polyethylene (HDPE) pipe and sump. On the west side of the landfill, leachate is pumped to a 30,000 gallon underground storage tank (UST). It is then pumped from this UST to a 225,000 gallon above ground storage tank (AST). On the east side, leachate is pumped to the Cell 10 manhole. From here it is pumped to a 10,000 gallon leachate load -out tank (UST) which pumps to the 225,000 gallon AST. Waste Management currently has truck load -out capabilities at both the 10,000 gallon UST and the 225,000 AST. Waste Management uses all HDPE piping and concrete manholes with stainless steel pumps and plastic or stainless fittings. A Waste Management fact sheet for this facility has been included as Appendix C. 3.2 Typical Landfill Leachate Characteristics Leachate is the liquid that passes through a landfill and results from precipitation and moisture that is present in the landfill contents. Landfill leachate is typically characterized by high values of COD, pH, ammonia and heavy metals as well as a strong yellow to black color and acidic or foul odor. As a landfill ages, the CBODs:COD ratio can be expected to decrease with initial ratios as high as 0.7 which decrease to ratios as low as 0.1. Leachate is often considered difficult to treat due to high ammonia and heavy metal concentrations. Technologies used for leachate treatment include 1) recycling or combined treatment with municipal sewage, 2) aerobic and anaerobic processes, 3) chemical and physical processes, and 4) membrane filtration. 3.3 Elk River Landfill Leachate Characteristics Leachate draining from the Waste Management Elk River landfill is monitored on a quarterly basis for general pollutants including chemical oxygen demand (COD), total suspended solids (TSS) and other general pollutants as well as metals, volatile organic compounds (VOCs), soluble VOCs. Quarterly leachate analysis for 2011-2014 are included in Appendix D. Table 4 City of'Elk River, Minnesota — T21.109643 Page 11 Elk River/Waste Management Leachate Study Prepared by Bolton & Menk, Inc. provides a summary those general parameters and metals pollutants frequently reported above the method detection levels (MDLs) in the Waste Management Elk River Landfill leachate. Table 4 - Elk River Landfill Leachate Characteristics Parameter Units 2011 2012 2013 2014 General Parameters Alkalinity, Total mg/L 5,148 5,875 7,663 8,238 Chemical Oxygen Demand (COD) mg/L 2,498 2,208 6,068 9,300 Chloride mg/L 1,600 2,113 1,968 1,918 Nitrogen, Ammonia (NH4-N) mg/L -- -- -- 1,350 Nitrogen, Total Kjeldahl (TKN) mg/L -- -- -- 1,120 pH SU 7.6 7.7 7.3 7.3 Phosphorus (P) mg/L -- 7.9 -- 10.3 Total Suspended Solids (TSS) mg/L 32 141 611 499 Sulfate (SO4) mg/L 118 22 113 34 Metals mg/L 0.015 0.019 0.041 0.017 Arsenic mg/L 0.088 0.089 0.109 0.105 Boron mg/L 14.9 15.3 14.8 16.3 Cadmium mg/L 0.001 0.001 0.003 0.001 Calcium mg/L 208 112 451 559 Chromium mg/L 0.126 0.167 0.202 0.228 Copper mg/L 0.062 0.007 0.069 0.016 Lead mg/L 0.016 0.005 0.024 0.010 Magnesium mg/L 139 109 149 164 Mercury mg/L <0.004 <0.004 <0.004 <0.004 Molybdenum mg/L 0.015 0.019 0.041 0.017 Nickel mg/L 0.227 0.375 0.571 0.435 Potassium mg/L 377 483 483 524 Selenium mg/L <0.010 <0.010 0.016 0.010 Sodium mg/L 1,493 1,880 1,838 2,028 Zinc mg/L 0.094 0.109 2.504 1.566 Parameters of particular interest include COD, TKN and ammonia which contribute to the aeration demand at the wastewater treatment facility. Although TKN is equal to ammonia nitrogen plus organic nitrogen, the fact that ammonia was reported at a concentration greater than the TKN indicates that the leachate nitrogen is primarily in the form of ammonia nitrogen. Projected COD and TKN load based on the 2014 concentrations and an average daily leachate City of Elk River, Minnesota -121.109643 Page 12 Elk River/Waste Management Leachate Study Prepared by Bolton & Menk, Inc. flow of 35,000 gallons per day are 2,700 lb COD/day and 327 lb TKN/day. Estimated biodegradable fraction, or CBOD5 load, ranges from 270-1,9001b/day. A significant increase in COD concentrations was noted from 2,500 mg/L in 2011 to 9,300 mg/L in 2014. The contributing factors associated with the observed increase are not known. Chloride, mercury, zinc and a few other parameters are present in concentrations that may result in effluent concentrations in excess of associated water quality standards (WQS) depending on the concentrations associated with the municipal load. The dilution ratio provided by the Mississippi river, however, results in only a minor impact on WQS in the receiving stream. Therefore, the existing WWTF effluent concentrations were not reviewed in detail to refine the projected effluent concnetrations. Metal concentrations in the biosolids were also projected based on typical activated sludge removal efficiencies documented in Appendix G of the EPA Local Limits Development Guidance (Appendix E of this report). All biosolids metal concentrations are projected below ceiling concentrations limits, however, zinc concentrations have the potential to impact cumulative loading limit if municipal zinc contributions are not negligible. Biosolids annual and cumulative loading limits do not apply if the biosolids are landfilled at the Waste Management facility. Color is difficult to quantify in analytical terms, however, this is a significant parameter of concern when treating landfill leachate. The Waste Management Elk River Landfill leachate is no exception with an observed dark tinge. Color impacts the aesthetics of the treated effluent and the effectiveness of the UV disinfection process. The transmittance of the wastewater is dramatically reduced by color and the effectiveness of the ultraviolet (UV) disinfection system. City of Elk River, Minnesota —121.109643 Page 13 Elk River/Waste Management Leachate Study Prepared by Bolton & Menk, Inc. SECTION 4.0 LEACHATE TREATMENT EVALUATION 4.1 General Concerns related to the combined treatment of municipal wastewater and the Elk River Landfill leachate are discussed in the following section. These concerns include 1) corrosion and/or odors in the collection system; 2) hydraulic and organic treatment capacity; 3) inhibition and/or toxicity to the biological treatment processes; 4) effectiveness of the ultraviolet disinfection process; 5) change in biosolids characteristics and quantity; and 6) evaluation of other combined treatment facilities. 4.2 Collection System Concerns Odor and corrosion are two concerns related to discharge of leachate into the Elk River collection system. Corrosion due to low or high pH is not anticipated as the leachate typically remains in the neutral range with observed levels of 7.3-7.6 SU and alkalinity, or pH buffering capacity, of 5,000-8,000 mg/L. Odors may be generated due to oxygen depletion and hydrogen sulfide gas generation in the Waste Management storage tanks and the estimated 10-12 hours in the proposed 4 to 5 mile 4 -in diameter forcemain from the Waste Management facility to the collection system. 4.3 Hydraulic and Organic Treatment Capacity The leachate flow volume is projected to remain consistent at approximately 35,000 gpd. The oxygen demand (chemical oxygen demand (COD)) is anticipated in the range of 5,000- 15,000-mg/L and the total Kjeldahl nitrogen concentration is estimated at 1,100-1,200 mg/L. Waste Management monitors COD rather than CBODs, the COD:CBODs ratio is not known, however COD will always be greater than CBODs. TKN data for leachate is based on two data points in September and November 2014. The COD load at the project flow is estimated at 1,460-4,380 lb/day while the TKN load is estimated at approximately 350 lb N/day. This accounts for approximately 25-35 percent of the design capacity and 50-75 percent of the reserve capacity allocated to future development both in and outside the urban service area. City of'Elk River, Minnesota — T21.109643 Page 14 Elk River/Waste Management Leachate Study Prepared by Bolton & Menk, Inc. Additional aeration may be required to satisfy the oxygen demand associated with the oxygen demand and nitrification if the allocated CBOD5 and TKN treatment capacities are exceeded. 4.4 Biological Treatment Performance Evaluation of the treatability of combined municipal wastewater and leachate utilized the Environmental Pollution Agency (EPA) Local Limits Development Guidance. This document provides guidance regarding toxic and inhibitory compounds as well as anticipated removal efficiencies through the typical biological treatment processes. Comparison of the EPA documented inhibition values (Appendix G of Local Limits Development Guidance) and the anticipated blended pollutant concentrations identified one parameter that approaches the threshold level for inhibition. The reported range of zinc inhibition is 0.3-10 mg/L for activated sludge and 0.08-0.5 mg/L for nitrification. Zinc concentrations in the leachate ranged from 0.03-6.64 mg/L and the blended wastewater concentrations are projected at 0.2-0.4 mg/L when only accounting for mass received in the leachate. Complete nitrification of the estimated influent nitrogen concentration of 90-100 mg/L will result in an effluent nitrate concentration in the similar range. If denitrification, (conversion of nitrate to nitrogen gas) is required to meet future total nitrogen limits, additional recycle pumping and supplemental carbon may be required. Future nitrogen limits may be as low as 10 mg/L total nitrogen. Biological treatment relies on carbon: nitrogen:phosphorus (C:N:P) ratios in the appropriate range to support biological activity. Optimum C:N:P ratios are in the range of 100:10:1 and 100:5:1. Projected ratios at start-up and design conditions for the Elk River WWTF are summarized in Table 5. As indicated, the additional of leachate results in a C:P ratio closer to 100:1, therefore, more phosphorus will be utilized through the biological processes, thereby reducing chemical feed requirements. A C:N ratio of approximately 100:20 (5:1) results in all loading conditions. The impact of this elevated nitrogen concentration will not be evident until total nitrogen City of Elk River, Minnesota —121.109643 Page 15 Elk River/Waste Management Leachate Study Prepared by Bolton & Menk, Inc. removal is required. Denitrification is supported with C:N ratios as low as approximately 3:1, below this ratio, supplemental carbon will be required to facilitate the denitrification process. Table 5 — Carbon:Nitrogen:Phosphorus Ratios CBODs TN Phos Loading Condition C:N:P Ratio (Ib/day) (lb/day) (lb/day) Design Conditions 7,220 1,362 273 100: 19: 3.8 Current Load Leachate Current Load + Leachate 3,153 719 6,510 1,350 7,220 - 9,663 2,069 74 100: 22: 2.3 10.3 100: 20: 0.16 84.3 100: 21 : 0.87 100:29: 1.17 Alkalinity is consumed by the nitrification process at a rate of 7.14 lb as CaCO3 per lb of nitrogen oxidized to nitrate. Therefore, with a projected influent nitrogen concentration of 90- 100 mg/L, a minimum alkalinity concentration of approximately 1,000 mg/L is required. 4.5 UV Disinfection System Performance The existing ultraviolet (UV) disinfection system is designed to achieve a dose of 30,000 µWs/cm2 at a peak design flow of 7.0 MGD and a UV transmittance (UVT) of 61 percent. This dose is designed to achieve compliance with the required effluent fecal coliform limit of 200 per 100 mL. As indicated previously, landfill leachate has a distinct color that reduces the UVT and effectiveness of the UV disinfection system. A bench scale study evaluated UVT reduction with a combination of raw leachate and treated municipal wastewater. The theoretical impact on UV system performance was calculated based on the measured the UVT values of the blended solutions. This conservative evaluation assumes color in the leachate is not removed through the biological activated sludge treatment process. Results of the UVT evaluation are summarized below. The results indicate the need for pilot testing with activated sludge treatment as the existing UV disinfection system cannot achieve the design UV dose of 30,000 µWs/cm2 with the blended flow until the influent flow exceeds 5 MGD. City of Elk River, Minnesota —121.109643 Page 16 Elk River/Waste Management Leachate Study Prepared by Bolton & Menk, Inc. Alternative disinfection solutions should insufficient color reduction be observed through the activated sludge process include expansion of the UV disinfection process or conversion to a chlorine disinfection system. Table 6 - Theoretical Performance of the Existing Ultraviolet Disinfection System at Reduced UV Transmittance due to Leachate Blending Influent Flow UV Performance without Leachate Blending UV Performance with 0.035 MGD Leachate Blending (MGD) UVT Dose # lamps Energy UVT Dose # lamps Energy (%) (uWs/cm2) operating (kW) (%) (uWs/cm2) operating (kW) 1.0 61 30,000 36 5.40 16.0 3,500 72 18.00 1.5 61 30,000 36 6.12 21.4 5,700 72 18.00 2.0 61 30,000 36 7.56 26.8 8,490 72 18.00 3.0 61 30,000 72 10.80 37.6 15,668 72 18.00 5.0 61 30,000 72 14.40 59.2 28,700 72 18.00 7.0 61 30,000 72 18.00 61 30,000 72 18.00 4.6 Biosolids Characteristics and Quantity Biosolids characteristics and quantity will increase based on the pollutant load and metals concentrations. Biosolids mass will increase at a rate of 0.65-0.85 lb per lb of CBODs removed and up to 15 lb per lb of phosphorus removed. A significant portion of the metals in the leachate will be removed as a precipitate and contained in the biosolids. Although landfill disposal is proposed, metals concentrations should be monitored to ensure concentrations remain below applicable limits should be facility choose to land apply biosolids. 4.7 Comparative Combined Treatment Faciltiies Waste Management operates over 150 landfills with either direct connections or leachate receiving at publically owned treatment works (POTWs). Activated sludge with chemical or biological phosphorus removal is the most common method of treatment. Comparison of the Elk River WWTF and four other facilities currently receiving leachate from other Waste Management landfill are summarized below in Table 6. Waste Management also discharge leachate to the municipal treatment facility in Fox Valley, IL, Glenbard Sanitary District, City of'Elk River, Minnesota — T21.109643 Page 17 Elk River/Waste Management Leachate Study Prepared by Bolton & Menk, Inc. Wheatland, IL, South Bend, IN, East Peoria Sanitary District, and Manitowoc, WI, however, the percentage of leachate at these larger facilities was significantly less than the proposed application at Elk River. Glenbard operates a 16.0 MGD pure oxygen facility, South Bend and East Peroia are activated sludge facilities with chlorine disinfection and capacities of 48 MGD and 37 MGD, respectively. Manitowoc has a 15.5 MG trickling filter process. As indicated, only two of the facilities were identified with a similar UV disinfection process and no facility reported operation with leachate contributions to the percent contribution proposed at the Elk River facility. Table 7 - Summary of Municipal WWTF Receiving Leachate from WM Landfills Parameter Elk River, Fergus Falls, Watertown, Fort Atkinson, Port Washington, MN MN WI WI WI Design Flow 4.54 5.20 2.70 3.10 (MGD) Current Average 1.30 1.80 2.5-3.0 1.7-2.0 1.22 Flow (MGD) Typical Leachate 100,000-200,000 Summer: Flow (gpd) 35,000 12,000 gallon/month 5,700 gpd 6,000-12000 gpd gallons/day gallons/day 3,500-6,500 Winter: gallon/day much lower Percent Leachate 2.7 0.67 0.14-0.21 0.34 0.50-1.00 Landfill Type Municipal Solid WM Gwinner, ND WM Deer Track Park Waste, Otter Tail Power Ash, M Municipal Solid WM Deer Track Park Construction & Fergus Falls Waste 1-2 trucks per day Demolition Municipal Treatment Activated Activated Sludge Activated Sludge Activated Sludge Activated Sludge Sludge Bio -P Chem -P Bio -P Chem -P Disinfection UV Chlorine UV Chlorine UV Biosolids Anaerobic Aerobic Digestion Anaerobic Liquid Land Centrifuge Thicken Thicken Applied Land Applied Land Applied Land Applied Leachate Color observed. Indicates that color No significant color Color has not been noted. No significant color. Slight Appearance and COD = 5,000- diminished through impact. BOD=240 mg/L hint of color. other 15,000 mg/L the activated sludge COD = not avail. TSS=95 mg/L BOD = not available Characteristics TKN = 1,100- treatment process NH4 = 1,300-1,400 TKN=1,440 mg/L NH4 = 1,400 mg/L 1,200 mg/L mg/L P=8 mg/L P = 9-10 mg/L COD:CBOD5 not known Other Comments Slow pumped Slow feed to the Truck to facility 2- Truck delivery and slow Closed landfill delivery to WWTF. 3x/week and bleed in discharge to the WWTF. Truck delivery 1-2 trucks preliminary from a centrate tank. Plant struggled with 30,000 per day to remove waste treatment Centrate tank gpd due to high N load. receiving station for receives a black blending. buildup, although the Odors have been noted. color of the centrate No effluent quality issues. and leachate does not have a significant color. Rob Skidness / Matt Kris Gauger Erin Sweeney Dan Buehler 218-739-4691 920-262-4085 esweeney@fortatkinsonwi.gov 262-284-5051 City of Elk River, Minnesota —121.109643 Page 18 Elk River/Waste Management Leachate Study Prepared by Bolton & Menk, Inc. SECTION 5.0 LEACHATE CONVEYANCE ALTERNATIVES 5.1 General Although Waste Management currently transports leachate to the Metropolitan Council collection system by truck, two options were explored to pump leachate to the Elk River Collection System. The proposed pumping systems incorporate the existing Waste Management storage facilities and a new pumping station to provide a consistent flow of leachate and the ability to regulate the discharge based on plant flow and load. Two alternate forcmain routes were considered and flow monitoring was provided at three locations to evaluate the impact on the collection system. 5.2 Forcemain Options Two alternate options were evaluated for connection to the Elk River collection system as depicted in Figure 4. The forcemain installation was evaluated with a directional drilled installation. Materials include a 4 -in lined and un -lined construction. Option 1 is approximately 21,220-1f (4.02 -miles) in length and follows Highway 169 south from Waste Management to Highway 197`h Avenue Northwest near Menards. Option 2 also follows Highway 169 south to County Road 25 where the proposed routing parallels 25 and the Great Northern Trail Corridor to a location just north of CSAH 1. The total length of Option 2 is approximately 26,000-1f (4.92 -miles). Unlined alternative are estimated at $1.85 M for Option 1 along Highway 169 and $2.14 M for Option 2 which follows the Great Northern Trail Corridor. Estimated costs for a lined alternative are $3.35 M and $4.02 M for Options 1 and 2, respectively. Detailed preliminary opinions of estimated project cost are provided in Appendix F. 5.3 Flow Monitoring Flow monitoring was provided at three locations in the collection system between May 1 and May 20, 2015. Flowmeter locations and graphical summaries for the data recordings are provided in Appendix G. Location 1 is associated with the proposed forcemain Option 2 through City of Elk River, Minnesota —121.109643 Page 19 Elk RiveriWaste Management Leachate Study Prepared by Bolton & Menk, Inc. � w Y J W sz oa 00 - � f ,F / e 10 J � , Z'' a a W W O� Of J W JO, N W Z O N U O O a 0 V) cnLLJ - N U0 QQ L�7 ? J Q s U Z W of Mo Ww oEiZ U W V) Q 0� Z =g Y o mS� W sH W c zp m Lo T C4 R� 33 y 11 } 0 H NLLJ - N U z �a s Zw Z U W of :2O W w CDEi Z= U W � o 3 Z =g Z e �p m T the Great Northern Trail Corridor with typical municipal flow of approximately 50 gallons per minute (gpm). Locations 2 and 3 are associated with the proposed forcemain Option 1 and reported current municipal flows of approximately 100 and 200 gpm in locations 2 and 3, respectively. The projected 35,000 gallon per day estimated leachate flow averages 24 gpm with a design minimum pumping capacity of 80 gpm to maintain a minimum 2 ft/sec velocity in the proposed 4 -in forcemain. The collection system capacity is adequate for discharge to either Option 1 or Option 2 in the collection system. City of Elk River, Minnesota —121.109643 Page 20 Elk River/Waste Management Leachate Study Prepared by Bolton & Menk, Inc. SECTION 6.0 RECOMMENDATIONS AND IMPLEMENTATION 6.1 Recommended Wastewater Treatment Improvements Recommendations following the preliminary evaluation are consistent with the project plan outlined in the Memorandum of Understanding. The projected impacts on allocated treatment capacity and the uncertainty regarding the reduction of color and improved UVT through the biological treatment process should be tested with a pilot scale operation or via truck delivery and metered feed to the facility when the full scale activated sludge process is on-line. The pilot operations are scheduled for November 2015 following completion and start-up of the activated sludge treatment facilities at the Elk River Wastewater Treatment Facility. Ideal conditions for pilot operations include a metered discharge at the preferred location in the collection system. This will provide the opportunity to monitoring nuisance conditions such as odors and/or build-up within the collection system. Additional information is desired regarding the ratio of carbonaceous biochemical oxygen demand to chemical oxygen demand ratio (CBODs:COD) to further evaluate the impact of the leachate on the overall facility treatment capacity. The observed COD values for 2013-2014 were significantly higher than previous years and load contributions for other facilities. If the concentration does not decrease over time, the quantity of leachate may need to be limited as the service area for the WWTF increases. Pilot operation will allow the facility to evaluate the color removal process. Although comparable facilities did not report the presence of color to the extent observed in Elk River, it was noted that any color present was removed through the activated sludge process. 6.2 Permitting Permitting requirements associated with construction and operation of a leachate pumping system and treatment at the municipal treatment facility include a General Stormwater Permit for Construction Activity from the Minnesota Pollution Control Agency (MPGA) and an Industrial City of Elk River, Minnesota —121.109643 Page 21 Elk RiveriWaste Management Leachate Study Prepared by Bolton & Menk, Inc. User Agreement that defines the flow and pollutant limits that are allocated to Waste Management. 6.3 Implementation Schedule The proposed implementation schedule for modification of Waste Management's current leachate management practices include piloting and testing with full scale operation, design, permitting, and construction. Testing is proposed for a period of 6-9 months following construction and start-up of the activated sludge treatment processes in fall 2015. Upon successful pilot operation, Waste Management may proceed with final design and construction as desired with an anticipated timeframe of completion in the fall of 2017. City of Elk River, Minnesota —121.109643 Page 22 Elk RiveriWaste Management Leachate Study Prepared by Bolton & Menk, Inc. Appendix A Memorandum of Understanding Landfill Leachate and Municipal Biosolids Disposal City of Elk River 13065 Orono Parkway NW Elk River, Minnesota, 55330 MEMORANDUM of UNDERSTANDING BETWEEN THE CITY OF ELK RIVER AND WASTE MANAGEMENT OF MINNESOTA, INC. SUBJECT; Landfill Leachate and Municipal Biosolids Disposal 1. Purpose. This Memorandum of Understanding (MOU) documents the intent of the parties to work toward two common goals, Goal I - conveying Waste Management's landfill leachate to the City of Elk River Wastewater Treatment Facility (WWTF) for treatment and disposal. Goal 2 — transport and disposal of municipal biosolids from the City of Elk River WWTF into Waste Management's Elk River landfill. 2. Issue. Waste Management seeks a long term solution for the handling and treatment of leachate from their landfill located in Elk River, Minnesota.. Limited options currently rewire hauling the leachate to a distant Metropolitan Council facility for treatment. The City of Elk River is in the process of upgrading the main treatment processes at the WWTF which, in concept, would allow for the primary treatment of the leachate. As a result of said facility upgrade the City of Elk River will be producing biosolids that are transportable by truck and disposable in a landfill. The City seeks a long tern solution for disposal of these biosolids. Waste Management's permit allows for the disposal of biosolids at their Elk River landfill. 3. Steps, Responsibilities and Timelines. Step - Responsible Preliminary Engineering Study Draft Agreement Finalize Funding Piloting and Testing Finalize Agreement Final Design Permitting Construction Party Waste Management WM and ER WM and ER City of Elk River WM and ER Waste Management WM and ER TBD Estimated. Completion June, 2015 August, 2015 .lune, 2016 November, 2015 - June, 2015 July, 2016 July, 2016 September, 2015 June, 2017 4. Monetary Terms. No payment shall be made by or to either party for their work detailed in this MOU. Successive agreements, to be developed through this work, shall detail all terms and conditions associated with all costs including but not limited to legal, design, construction, testing, hauling disposal charges, and future: maintenance. S. Non-binding. This MOU sets forth the intent of the parties to investigate the feasibility of addressing the goals set forth in Section 1 above. Either party may terminate its participation in this effort at any time and will give notice to the other party upon doing so. Neither party shall be bound to the other or obligated to proceed with a project to address the goals unless and until a binding agreement is entered into between the parties. 6. Effective date. This MOU shall be effective on the date signed by all parties Elk River Landfill Inc Waste Management of Minn( Inc. Michael Fleming, President City(o) Elk River John Dietz, Mayor, Tina AIlard, City Clerk y ( ate) (Date) Appendix B National Pollutant Discharge Elimination System (NPDES) Permit MN 0020788 STATE OF MINNESOTA Minnesota Pollution Control Agency Municipal Division National Pollutant Discharge Elimination System (NPDES)/ State Disposal System (SDS) Permit MN0020788 PERMITTEE: City of Elk River FACILITY NAME: Elk River Wastewater Treatment Facility RECEIVING WATER: Mississippi River (Class 18, 213d, 3C, 4A, 413, 5, 6 Water) [ORVW] CITY: Elk River COUNTY: Sherburne ISSUANCE DATE: July 18, 2013 EXPIRATION DATE: June 30, 2018 MODIFICATION DATE: October 16, 2014 The state of Minnesota, on behalf of its citizens through the Minnesota Pollution Control Agency (M PCA), a Litho rizes t he Permittee to construct, install and operate a disposal system at the facility named above and to discharge from this facility to the receiving water named above, in accordance with the requirements of this permit. The goal of this permit is to reduce pollutant levels in point source discharges and protect water quality in accordance with Minnesota and US statutes and rules, including Minn. Stat, chs. 115 and 116, Minn. R. chs. 7001, 7041, 7049, 7050, 7053, 7060, 7090, and the US Clean Water Act. This permit is effective on the issuance date identified above. This permit expires at midnight on the expiration date identified above. Signature: Nicole Blasing Supervisor SSTS Section Municipal Division Submit eDMRs: Submit via the MPGA Online Services Portal at hit ps://netweb.pca.state. m n. us/private/ for The Minnesota Pollution Control Agency Questions on this permit? ■ For eDMR and other permit reporting issues, contact: Jennifer Satnik, 651-757-2692. • For specific permit requirements or permit compliance Submit Other WQ Reports to: status, contact: Attention: WQ Submittals Center Herschel Blasing, 218-316-3860. Minnesota Pollution Control Agency 520 Lafayette Road North • General permit or NPDES program questions, contact: St. Paul, MN 55155-4194 MPGA, 651-282-6143 or 800-657-3938. 520 Lafayette Rd. N.; St. Paul, MN 55155-4194; 651-296-6300 (voice); 651-282-5332 (TTY) Regional Offices: Duluth ■ Brainerd - Detroit Lakes • Marshall • Rochester Equal Opportunity Employer + Printed on recycled paper containing at least 10% fibers from paper recycled by consumers Page 2 Permit MN0020788 Table of Contents Permitted Facility Description 3-4 Topographic Map of Permitted Facility 5 Summary of Stations and Station Locations 6 Limits and Monitoring Requirements 7-10 Chapter 1. Compliance Schedule 11-12 Chapter 2. Mercury Minimization Plan 12-13 Chapter 3. Whole Effluent Toxicity (WET) Testing — Acute 13-14 Chapter 4. Total Residual Oxidants —Domestic 15 Chapter 5. Surface Discharge Stations 15-17 Chapter 6. Waste Stream Stations 17 Chapter 7. Domestic Wastewater -- Mechanical System 18 Chapter 8. Domestic Wastewater— Pretreatment 18-20 Chapter 9. Biosolids-Land Application 21-24 Chapter 10. Total Facility 'Requirements 24-34 Page 3 Permit MN0020788 Facility Description The Elk River Wastewater Treatment Facility (Facility) is located in the NF %, Section 3, Township 32 North, Range 25 West, city of Elk River, Sherburne County, Minnesota. This is a Class A facility. Major components of the Facility include: Collection with gravity and/or Pressure Sewer 2 Bar Screens - mechanical Influent Flow Meter 1 Grit Removal 2 Primary Clarifiers 2 Trickling Filters 1 Activated Sludge - contact stabilization, conventional, step feed Phosphorus Removal —chemical Sodium Hypochlorite chemical feed system 3 Secondary Clarifiers Filter --six-cell sand filter with backwash Ultraviolet Light 2 Anaerobic Digesters - complete mixed, heated - mesophilic 2 Storage Tanks Land Application The existing Class A wastewater treatment facility consists of two mechanically cleaned bar screens, screenings wash press, influent ParshaII flume, vortex -type grit removal system, two primary clarifiers, two trickling filters (currently run in series mode), aeration basin (no diffusers or blowers were provided/installed), chemical feed system for phosphorus removal, sodium hypochlorite chemical feed system, three secondary clarifiers, pump station, six -cell dual media sand filter with backwash, and ultraviolet (UV) disinfection. Biosolids treatment consists of anaerobic sludge digestion using one primary and one secondary anaerobic sludge digester. Biosolids are stored in two sludge storage tanks and eventually land applied. The proposed facility will continue to use the existing pretreatment facility. The proposed facility will expand the existing design flow from 2.2 million gallons per day (mgd) to 4.54. mgd. The existing primary clarifiers will be rep urposed as anaerobic tanks for blologicaI phosphorous removal. The existing trickling filters will be removed and a new extended aeration activated sludge basin that can be operated in series or parallel will be added. The existing final clarifiers will remain, however, new covers will be added. The existing final clarifier sludge wet well will be removed and a new Return Activated Sludge/Waste Activated Sludge lift station and building will be installed. The existing sand filters will remain but new chlorine and dechlorination equipment will be added. The existing UV disinfection process will remain as will the existing chemical feed system for phosphorous removal. A new biosolids and blower building will be constructed and the existing control building and garage will be removed to make room for the required improvements and a new operations building and garage will be constructed. Biosolids treatment will consist of converting the existing anaerobic digesters to aerobic digesters and the existing biosolids storage tanks will also be converted to aerobic digesters and storage. The liquid biosolids will be run thorugh a screw press to produce a cake product. The blosolids will be disposed of as a cake product to either a landfill or to the Facility"s existing permitted land application sites. Page 4 Permit MN0020788 There are no known bypass points in the disposal system. The Facility has a continuous discharge (SD -401) to the Mississippi River (Class 1C, 213d, 36, 3C, 4A, 413, 5, 6 Water) and is designed to treat an average wet -weather (flow) (AWW) of 2.2 mgd and an average dry - weather flow of 1.97 mgd. The Facility has a five-day carbonaceous biochemical oxygen demand (CBOD5) strength of 200 milligrams per Liter (mg/Q based on the average wet -weather design flow. The Facility was constructed in 1977 and upgraded in 1995. The reach of the Mississippi River where the discharge from the Facility is located (between St. Cloud to Anoka) was classified as an Outstanding Resource Value Water (ORVW) on November 5, 1984. The design AWW of this Facility on the date of QRVW designation was 1.04 mgd. In order to comply with Minn. R. 7050.0180, the mass effluent limits in the National Pollutant Discharge Elimination System {NPDES}/State Disposal System (SDS) permit for CBOD5 and total suspended solids (TSS) were frozen at the level of mass limits in existence on the date of QRVW designation. To restrict or "freeze" the mass of pollutants entering the QRVW reach, the Facility cannot increase the mass of pollutants in the effluent over that allowed by the permit on November 5, 1984. In accordance with MPCA rules regarding nondegradation for ORVWs, nondegradation review is required for any new or expanded discharge (Minn. R. 7050.0180). A new discharge is a discharge that was not in existence on the effective date the QRVW was designated as described in Minn. R. 7050.0460 and 7054.0470. An expanded discharge is a discharge that changes in volume, quality, location, or any other manner after the effective date the outstanding resource value water was designated as described in Minn. R. 7450.0460 and 7054.0470, such that an increased loading of one or more pollutants results. Any change that results in an increased mass loading of one or mare pollutants is subject to nondegradation review in accordance with Minn, R. 7050.0180. This permit also complies with Minn. R. 7453.0275 regarding anti -backsliding. Any point source discharger of sewage, industrial, or other wastes for which an NPDES/SDS permit has been issued by the MPCA that contains effluent limits more stringent than those that would be established by parts 7453.0215 to 7053.0255 shall continue to meet the effluent limits established by the permit, unless the permittee establishes that less stringent effluent limits are allowable pursuant to federal law, under section 402(o) of the Clean Water Act, United States Code, title 33, section 1342. The location of designated monitoring stations is specified on the attached "Summary of Stations" report. The location of the Facility is shown on the attached topographic map. Topographic Map of Permitted Facifit: NIN002078& Elk River Wastewater7reatTncrit Facility 732N, R261N, Sec6zn 3 Elk R-wer, Sherburne Coumy, Minneson Jer N6 se W 01 Sura" P(A. • L SOMI Ef4uofftro Surface Water Total Faafifiry Discharge 14 Page 5 Permit MN0020788 It . 01-% 1-% Map prodixed fiVUTCA Staft YJIV"U -I Sowme: LISGS Q�ad DIMiles Permit Modified: October 16, 2014 Permit Expires: June 30, 2018 Surface Discharge Stations Station Type of Station SD001 Effluent To Surface Water Waste Stream Stations Station Type of Station W8001 Influent Waste Elk River WWTF Page 6 Summary of Stations Permit 0: MN0020788 Local Narne PLS Location Total Facility Discharge NW Quarter of Section 3, Township 32 North, Mange 26 West Local Name PLS Location Influent waste stream Permit Modified: October 16, 2014 Elk River WWTF Permit Expires: June 30, 2018 Limits and Monitoring Requirements The Permittee shall comply with the limits and monitoring requirements as specified below. Period. • Limits Applicable In the Interim ,Period S13001: Total Facility Discharge Parameter BQD, Carbonaceous 05 Day (20 Dog C) - BOD, Carbonaceous 05 Day (20 Deg C)___ 130D, Carbonaceous fly Day (20 Deg C) BOD, Carbonaceous 05 Day (20 Deg C) BOD, Carbonaceous 05 Day (20 Deg C) Percent Removal Chlorine, Total Residual Fecal Coliform, MPN or Membrane Filter 44.50 ow rcury, Dissolved (as Hg) _ rcury, Total as Hg) — rite Plus Nitrate, 'Total (as N) roger, Ammonia, "total (as N) rogen, Kjeldahl, 'total - - rogen, Total (as N) vixen. Dissolved osphorus, Total (as P) lids, Total Dissolved (TDS) lids, Total Suspended (TSS) lids, Total Suspended (TSS) lids, Total Suspended (TSS) lids, Total Suspended (TSS) lids, Total Suspended (TSS) Perdent moval lids, Total Suspended (TSS), grab Limit UnitsI Limit Type 98 1� kg/day Caiendar Month Average 25 J mp,�L Calendar Month Average 157 r kglday Maximum Calendar Week Aver_Ze 40 mg1J. Maximum Calendar Week Average 85 % Minimum Calendar Month Average U.038 mgJL Daily Maximum 200 #] D(lml Calendar Month Geometric _ Mean Monitor mgd Calendar Month Average Only Monitor mgd Calendar Month Maximum tJnl _ Monitor -len_ MG Cadar Month Total Onl _ Monitor nglLalen Cdar Quarter Maximum --Qnly _ �� -_ -- - - - 6.9 nglL Calendar Quarter Average MoniCalendar Month Average Olin Monitor mglL Calendar Month Average only Monitor mglL Calendar Month Average Monitor mg/L Calendar Month Average Monitor mglLCalendar Month Minimum only - 9.4 SU Calendar Month Maximum G.0 SU Calendar Month Minimum Monitor kglmv Calendar Month Total Only_ Moonitor mglL� Calendar Month Average n y- - 118 kglday� Calendar Month Average 30 mg/l., Calendar Month Average J177 kg/day Maximum Calendar Week Average 45 mg/L Maximum Calendar Week Average 85 �% n um Calendar Month j Average Monitor 1[mglL f alend� ar Quarter Maximum Only Page 7 Permit 4: MN0020788 Effective Period Sam 1ev e]Fre uency Notes Jan-Dec24-Hour Flow3 x Week _ Composite -j Jan -Dec TIgmposite -Hour Flow 3 x Week _ Jan -Dec 24 -Hour Flow 3 x Week I� Composite J Jan -Dee 24 -Hour Flow 3 x Week 1I Composite C Jan -Dec Calculation 3 x Week Jan -Dec Grab Ix -bay -- Jan -Dec xDayJan-Dec Grab f 3 x Weep __ Il f7l Jan -Dee Measurement, ,f Continuous Jan -Dec Measurement, 1 x Day _ Continuous Jan -Dec JMeasurement, 1 x Day Continuous Tan -Dec Grab L1 x Quarter - 3 Jan -Dec Grab f 1 x Quarter 3 Jan -Dee 24 -Hour Flow 1 x Month Composite— Jan -Dec 24 -Hour Flow 1 x Month Com osite Jan -Dec — 24 -Hour F law 1 x Month Composite jC Jan -Dec 24-1Iour blow 1 x Month Cnm osite 11 - Jan -Dec Grab 3 x Week f T 1 Jan -Dec Grab l x Day f 1 Jan -Dec Grab 1 x Day I Jan- Dec 24 -Hour Flow 1 x Week _ Composite C Apr, Sep 24 -Hour Flow 1 x Month Composite Jan -Dec 24 -Hour Flow 3 x Week Com osite Jan-Dcc 24 -Hour Flow 3 x Week Composite� Jan -Dec 24 -Hour Flow 3 x Week Cote_ asste Jan -Dec 1f 24 -Haar Floes+ 3 x Week I- _Composite Ian -Dec ,�Caiculatlon 3 x Week .Tan -Dec Grab__ 1 x Quarter Permit Modified: October lb, 2014 Elk River WWTT Permit Expires: June 30, 2018 Limits and Monitoring Requirements The Permittee shall comply with the limits and monitoring requirements as specified below. Period: Limits Applicable in the Interim Period WS 001: Influent waste stream _ Parameter OD, Carbonaceous 05 Day (20 Deg C) oD, Carbonaceous 05 Day (20 Deg low - ---- low - tercury, Total (as Hg) H H - hosphorus, Total (as P) recipitatioo ❑lids, Total Suspended (TSS) olids, Total Suspended {TSS} Limit__ Units Limit Type _ Monitoralendar mglL CMonth Average Onl ��_- Monitor mg/L Calendar Month Maximum Only _ Monitor mgd Calendar Month Average Only_ Monitormgd Calendar Month Maximum --onl n Monitor MG Calendar Month Total Monitor nglJ alendar Quarter Maximun Onl ��_- Monitor 5U Calendar Month Maximum Only Monitor SU Calendar Month Minimum Univ_ i _-J_- Monitor mgfL [Calen_darMunthAvera�gc Ont Monitorto Calendar Month Total — Monitor Calendar Month Average Only Monitor mglL Calendar Month Maximum Period. LimitsApplieable in the Final Period SD 001: Total Facility Discharge Page 8 Pennit #-- NW0020788 Effective Period 5am le 7 pejj re_que!!9 Jan -Dec 24 -Hour Flow 3 x Week Compsite Jan -Dec 24 -Hour Flow 3 x Week C'm gsit�� Jan -Dec Measurement, 1 x Day_ Continuous Jan -Dec if Measurement, 1 x Day II Continuous J an -Dec Measurement, =1 x Day Continuous Jan -Dec Grab 1 x Quarter Jan -Dec Grab 1 x Day Jan -Dec Grab -1 x Day Jan -Dec 24-Houx blow 1 x Week Composite Jan-Dcc Measurement 1 x Day Jan-Dec24-Hour Flow 3 x Week - 11 composite Jan -Dec 24 -Hour Flow 3 x Week - _ 'rnposite� Notes 4 1 1 ParameterLimit OD, Carbonaceous 05 Day (20 Deg - OD, Carbonaceous 05 Day (20 Deg 9$ 25 Units I kglday _ mglL Limit Type Calendar Month Average Calendar Month Average Effective Period Jan -Dee Jan -Dec _5am le Type 24 -Hour Flow Composite 24 -Hour Flow I Compsite Frcquettcyj 3 x Week 3 x Week Notes COD, Carbonaceous 05 Day (20 Deg POD, Carbonaceous 05 Day (20 Deg I� 157 kglday Maximum Calendar Week Average Maximum Calendar Week J� Averagze J Minimum Calendar Month Average Daily Maximum i Jan -Dec -- Jan -Dec - Jan -Dec �� Jan -Dec'' 24 -Hour Flow Com 'Site _ 3 x Week _ 3 x Week 40 � mglL 24 -Hour Flow Compos te i�� 3OD, Carbonaceous 05 Day (20 Deg85 Percent Removal % � mgJl. Calculation Grah 3 x Week 1 x Day __ Chlorine, Total Residual -0.038 ecal Coliform, MPN or Membrane _.ilter 44.50 1 low Calendar Month Geometric Mean I Calendar Month Average Jan -Dec _ Jan -Dec Grab 3 x Week 200 Monitor Onl M'mtor Onll_. # 100m1 mgd - mgd Measurement, _ Continuous Measurement, Continuous Measurement, 1 x Day low ICalendar Month Maximum Month Maximum Calendar Month Total Calendar Quarter Maximu 1Ciilendar Quarter Average Jan -Dec 1 x Day - —� low .._ Mercury, Dissolved (as 11g) ercury, Total (as Hg) Monitor Only��_ Monitor 6.9 MG ngll ngCL Jan -Dec 1 x Day f 3 3 Jan -Dec Jan -Dec Grab Grab 1 x Quarter 1 x Quarter itritc Plus Nitrate, Total (as iii) r Monitoi Only- mglL Calendar Month Average -. _ _-� Jan -Dec 24 -Hour blow Com osite 1 x Month Permit Modified: October 16, 2014 Permit Expires: June 30, 2018 Elk River W WTF Limits and Monitoring Requirements The Permittee shall comply with the limits and monitoring requirements as specified below. Period. LindisApplicable in the Final Period SD 001 Total Facility Discharge Page 9 Permit 4: MN0020788 Parameter Limit Units Limit Type Effective Period ]Sam Ie Try Pe Fre uency i 1Yotes itrogen, Ammonia, 'Iola] (as N} Monitor Only mg1T, Calendar Month Average Jan-Dcc 24 -Hour Flow Composite [-Hoitrogen, 2 Compo Flow Compr Com osite 1 x Month Kjeldahl, Total rtrogen, Total (as N) Monitor Only Monitor Onl mglL mgll. _ Calendar Month Average Calendar Manlh Average Jan -Dec FJan-Dec ::]24_-Hou,­F1_o_w]1 rl x Month x Month I F.._.J xygen, Dissolved H Monitor OnlyJI 9.0 mg/L. SU Calendar Month Minimum] f Calendar Month Maximum f San -Dec Jan -Dec Grab Grab 3 x Week I x Day 1 i 1 T1 6.0 SU Calendar Month Minimum Jan -Dec Grab 1 x Day I hosphorus, Total'(as P) 1.0 mgfL 12 Month Moving Average Jan-Dcc i4 -Hour Flow Composite J I 1 x Week 3 hosphorus, Total (as P) F'24_7kglyr Monitor Only ii Monitor l�""=� rnglL =_ 12 Month Moving Total Calendar Month Average Calendar Month Total Jan -Dec Tan -Dec Jan -Dec Calculation 24 -1 -four Flow Composite 24 -Hour Flow Composite 1 x Week I x Week l x Week 3 hosphorus, Total (as P) �[ 'hosphorus, Total (as P) kglmv ��_ _� olids,'lotal Dissolved (TDS) olids, Total Suspended (TSS) Monitor Only 118 mgll, kglday Calendar Month Average Calendar Month Average Apr, Sep Jan -Dec 24 -Hour Flow Com osite I-Io r Flow !�Composite 1 x Month 3 x Week Calendar Month Total Solids, Total Suspended (TSS) 30 mgiL Calendar Month Average Jan -Dec 24 -Hour Flow Cam osite 3 x Week Measurement, _ olids, Total Suspended (TSS} 177 kglday Maximum Calendar Week Average f Maximum Calendar Week Avera e Calendar Month ]vim mu Average Jan -Dec l _ J124 Jan-Dec124-1-four Jan -Dec -Hour Flow Composite Flow Com vs_ite Calculation 3 x Wcck 3 x Week 3 x Week � J 'lids, Total Suspended (TSS) [olids, Total Sus ended TSS Percent emoval P ( ) f 45 l� _ 85 in /� ftdC Total Suspended (TSS), grab n)) Monitor mg/L Calendar Quarter Maximum 11 Jan -Dec Grab 1 x Quarter L WS 001: Influent waste stream Parameter Limit Units Limit Type J Effective Pcriod Sample Typc Frcyuency Notes -�. -- OD, Carbonaceous 05 Day (20 Deg Monitor mg/1. - Calendar Month Average Jan -Dee 24 -Hour Flow 3 x Week Onl_� Composite ���_ OD, Carbonaccous 05 Da 20 Dc Day ( Monitor rn Calendar Month Maximum Tan-Dce 24 -Hour Flow 3 x Week Only 0 �� Composite low Monitor mgd _ Calendar Month Average71an-Dec Measurement, 1 x Day _-- Flo—w- __.[_'C`ontinuous Calendar Month Maximum MonitorHMG Jan -Dec Measurement, _1x Day Onl Calendar Month Total Ctintinuous 1 x Day Flow Monitor Jan -Dec Measurement, Only Continuous ercury, "Total (as Hg) Monitor ng/l. Calendar Quarter MaximumJan-Dec Grab 1 x Quarter 4 Ont itrtte Plus Nitrate, Total (as N) Monitor mglL Calendar Month Average Jan -Dee 24 -Hour Flow 1 x Month Only Monitor mg//L Calendar Month Average Jan -Dec Composite 24-11our Flow I x Month1 itrogen, Kjeldahl, Total Qnt Calendar Month Average CoEM!Posite 24 -1 -four Flow 1 x Month �r u itrogen, Total (as N) �: -- Mon!' or mglL .Tan -Dec _ - —7 Only� LCCm osP 1te � Permit Modified: October 16, 2014 Permit Expires: June 30, 2018 Elk River WWTF Limits and Monitoring Requirements The Permittee shall comply with the limits and monitoring requirements as specified below. Peribel. ,Lim ftsApplivablein the Final Period WS 001: Influent waste stream Page 10 Pennit #: MN0020798 Parameter — Limit -SU— Limit Type =Effective PeriodSample — -- - Type Frequency Notes ETT .-- - - ]r-M—onilo, rhospiiarW, -Total (asP)-Monitor - -- --Only Monitor Olt] I only.._.� Monitor Onl- SU mglL Calendar Month "F Calen r aa - Moiath Minimum Calendar Month Average -- Calendar Month " Total Calendar Month Average Jan -Dec Ian -Dec -- - Ian -Dec -Jan­-Dec cc Gra I I- 12�4-Uou��ow composite I MeasurementI =IDay I x Da y Precipitation I 1 Solids, Total Suspended (TSS) ' 1 olids, Total Suspended {ms} If Monitor Onl Monitor Only _ mA m � 124 -Hour Flow1 Composite 3 x Week Calendar Mouth Jan -Dec F 2 w 4 -Hour Flo Composite 11 Notcs: I Analyze immediately. 2 Sample when sodium hypochloride is used. 3 See Surf -ace Disebarge Stations Chapter for additional information. 4 See Waste Stream Stations Chapter for additional information. Permit Mod iCred: October 16, 2014 Elk River WWTF Page 11 Permit Expires: Rune 30, 2018 Permit #,. MN0020788 Chapter 1. Compliance Schedule 1. Compliance Related Construction Schedule Definitions 1.1 "Initiation of operation" means the date that MPCA determines all components of the wastewater treatment system are complete and functioning and the project begins operating for the purposes for which it was planned, designed, and built. 1.2 "Completion of construction" means all the construction is complete except for minor weather-related components and conforms to approved plans and specifications and change orders. Schedule 1.3 Submit an updated Phosphorus Management Plan (PMP) by December 31, 2013. This plan shall be submitted to the MPGA for review and approval. To be approved the PMP must identify specific actions that the Permittee will take to reduce or minimize influent phosphorus sources by working with the influent contributors, and the expected reduction to phosphorus in the efflent from that action, when implemented. 1.4 At a minimum, the PMP shall include the following information: a. A surnmary of influent and effluent concentrations, mass loadings, and percent removal calculations using the most recent five (5) years of monitoring data. b. Identification of existing and potential sources of elevated phosphorus concentrations and/or loadings to the facility. As appropriate for the facility, consider residential, institutional, municipal, and commercial sources. For each source of phosphorus identified, the Permittee shall propse a strategy for source control through working with the source (for example, the water utility or significant industrial user to develop an implementation plan and schedule for reducing phosphorus influent from that source. c. An evaluation of past and present facility operations to determine those operating procedures that maximize phosphorus removal. d. A summary of all phosphorus reduction activities implemented during the last five years. e. Phosphorus management and reduction goals for the next five years using the information collected in a through d above. f. A plan to implement phosphorus management and reduction measures during the next five years. PMP guidance can be found on the MPCA internet at http://www.pca.state,mn.us/enzg8fa or by contacting the compliance staff listed on the cover page of this permit. hollowing MPGA approval, the Permittee shall implement the PMP. 1.5 The Permittee must submit Plans and Specifications by December 31, 2014. The Plans and Specifications must address the construction needed to attain complinace with the final water quality based effluent total phosphorus limit of 2,421 kilograms per year and the concentration limit for total phosphorus of 1 milligram per liter_, 1.6 The Permittee shall begin construction by June 1, 20.15. The Permittee shall notify the MPGA in writing within 14 days of start of construction, 7 The Permittee shall submit the 1st annual. Phosphorus Reduction Evaluation Report by December 31, 2015. This progress repost must show steps taken to reduce influent sources of elevated phosphorus concentrations and/or loading to the Facility. 1.8 The Permittee shall submit a Phosphorus Reduction Evaluation Report by December 31, 2016. This progress report must show steps taken to reduce influent sources of elevated phosphorus concentration and/or- longing to the Facility. 1.9 The Permittee must notify the MPCA in writing at least 14 days before December 31, 2017. This notification shall give a date for initiation of operation for the construction project. Following MPCA staff's concurrence that the facility is adequately prepared, MPGA staff will notify the Permittee that it may initiate operation of the new or upgraded facility. Permit Modified: October 16, 2014 Elk River WWTF Page 12 Permit Expires: June 30, 2018 Permit #: MN0020788 Chapter L Compliance Schedule 1. Compliance Related Construction Schedule 1.10 The Permittee must initiate operation of the updated facility on or before December 31, 2017. The Permittee must notify the MPCA in writing within 14 days after the actual initiation of operation date. 1.11. The Permittec must attain compliance with the final 2,430 kilograms per year (kg/yr) Total Phosphorus (TP) and 1 milligram per liter (mglL) TP limits. The kg/yr limit is a.12 month moving total and the mg(L limit is a 12 month moving average concentration limit and must be met as soon as possible, but no later than December 31, 2017. 1.12 The Permittee must notify the MPCA in writing at least 14 days before the planned completion of Construction date. The MPCA may complete a final inspection. 1.13 Submit Final Technical Docuements. The Permittec must submit the following to the MPCA within one year after the intiation of operation date: a. An MPCA-approved certification form that is signed by a professional engineer registered in the state of Minnesota stating that the project meets the perfomance standards. b. A revised operation and maintenance manual or a maintenance plan; or a certificate of completion of an operation and maintenance manual on a form prescribed by the MPGA. At a minimum, this plan must include a detailed discussion of operation and controls, maintenance, sampling and analysis, problem mitigation, VOC managment, personnel records and reporting, and safety. This plan must be maintained and updated regularly and made available to the MPCA staff upon request. c. One copy of "as -built" plans and specifications, also known as record drawings, must be submitted in a format approved by the MPGA. The factsheet titled: "Wastewater Treament Facility Construction Record Documents, As -built Submittal Requirements" contains specific information regarding the required format of the submittal. The document is located on the MPCA web page at: http:flwww.pea.state. mn.uslindex.php/view-doctiment.hW?gid=15492. 1.14 Phosphorus limits are to be calculated as follows: "12 -Month Moving Total" is a rolling total. To calculate, for each month multiply the total volume of effluent flow (MG) by the monthly average concentration and by a 3.785 conversion factor to get kg/month. Then add all of the monthly values (kg/mo) during the last twelve months, starting with the monthly total for the month of the correct reporting period. Facilities with a new 12 -Month Moving Total phosphorus limit shal l for the first 1 I months that the limit is effective, indicate'(NR) C 12 months' in the eDMR comments field in place of a value for the 12 -Month Moving Total until the 12th month of monitoring. Chapter 2. Mercury Miniimization. Plan 1. Mercury Pollutant Minimization Plan 1.1 The Permittee is required to complete and submit a Mercury Pollutant Minimization Plan (MMP) to the MPCA as detailed in this section. If the Permittee has previously submitted a MMP, it must update its MMP and submit the updated MMP to the MPCA. The purpose of the MMP is to evaluate collection and treatment systems to determine possible sources of mercury as well as -potential mercury reduction options. Guidelines for developing a MMP are detailed in this section. 1.2 The specific mercury monitoring requirements are detailed in the limits and monitoring section of this permit. Information gained through the MMP process can be used to reduce mercury concentrations. As part of its mercury control strategy, the Permittee should consider selecting activities based on the potential of those activities to reduce mercury loadings to the wastewater treatment facility. Pumit Modified: ontober 16, 2014 Elk River WWTF Page 13 Permit Expires- June 30, 2018 Permit #: MN0020788 Chapter 2. Mercury Minimization Plan 1. Mercury Pollutant Minimization Plan 1.3 The Permittee shall submit a Mercury Minimization Plan by 180 days after permit issuance. At a minimum, the MMP must include the following: a) A Summary of mercury influent and effluent concentrations and biosolids monitoring data using the most recent five years of monitoring data, if available. b) Identification of existing and potential sources of mercury concentrations and/or loading to the facility. As appropriate for your facility, you should consider residential, institutional, municipal, and comunercial sources (such as dental clinics, hospitals, medical clinics, nursing homes, schools, laundries, and industries with potential for mercury contributions). You should also consider other influent mercury sources, such as stormwater inputs, ground water (inflow & infiltration) inputs, lift station components, and waste streams or sewer tributaries to the wastewater treatment facility. c) An evaluation of past and present WWTF operations to determine those operating procedures that maximize mercury removal_ d) A summary of any mercury reduction activities implemented during the last five years. e) A plan to implement mercury management and reduction measures during the next five years. Chapter 3. Whole Effluent Toxicity (WET) Testing - Acute 1. General Requirements 1.1 The Permittee shall conduct annual acute toxicity test batteries on. Outfall SD001 beginning with the issuance date of the permit. The first set of annual results is due the last day of the first full calendar quarter following permit issuance and annually thereafter. (For example, if the permit is issued April 28, the test results are due on or before September 30 of each following year.) 1.2 This permit does not include an acute whole effluent toxicity limit; however the facility is required to conduct acute toxicity tests for Outfall SD001. Results of acute toxicity tests will be evaluated against a monitoring threshold value of 0.9999 TUa. 2. Species and Procedural Requirements 2.1 Test organisms for each test battery shall include the fathead minnow (Pimephales prornelas)-Method 2001.0, Ceriodaphnia dubia-Method 2002.0, and Daphnia magna -Method 2021.0. 2.2 Any other circumstances not addressed in the previous requirements or that require deviation from that specified in the previous requirements shall first be approved by the MPCA. 2.3 Tests shall be conducted in accordance with procedures outlined in EPA. -821-R-02-412 "Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms" - Fifth Edition (Acute Manual) and any revisions to the Manual. Any test that is begun with an effluent sample that is equal to or exceeds a total ammonia concentration of 5 mg/I shall use the carbon dioxide -controlled atmosphere technique to control pH drift. 2.4 All effluent samples shall be flow proportioned, 24-hour composite samples. 'Test solutions shall be renewed daily. Testing of the effluent shall begin within 36 hours of sample collection. Receiving water collected outside of the influence of discharge shall be used for dilution and controls. 2.5 Static renewal acute serial dilution tests of the effluent shall consist of a control 12.5%, 25%, 50%, 75% and 100 Percent effluent. Permit Modified: Wober. 16, 2014 Elk Rimer WWTF Page 14 Permit } xpires: June 30, 2018 Permit 4: "0020788 Chapter 3. Whole Effluent Toxicity (WET) Testing - Acute 3. Quality Control and Report Submittals 3.1 Any test that does not meet quality control measures, or results which the Permittee believes reflect an artifact of testing shall be repeated within two (2) weeks. These reports shall contain information consistent with the . report preparation section of the Acute Manual. The MPCA shall make the final determination regarding test validity. 4. Positive Toxicity Result for WET 4.1 Should a test exceed 0.9999 TUa for whole effluent toxicity based on results from the most sensitive test species, the Permittee shall conduct two repeat test batteries on all species. The repeat tests are to be completed within forty-five (45) days after completion of the positive test. These tests will be used to determine if toxicity exceeding 0.9999 TUa remains present for any test species. For both retests, if no toxicity is present above 0.9999 TUa for any test species, the Permittee shall return to the test frequency specified by the permit. If either of the repeat test batteries indicate toxicity above 0.9999 TUa for any test species, the Permittee shall submit for MPCA review a plan for conducting a Toxicity Reduction Evaluation (TRE) including the Facility Performance Review (to be submitted to the MPGA WQ Submittals Center within 60 days after the toxicity discovery date), and at a minimum, provide quarterly reports, starting from the date of TRE plan submittal, regarding progress towards the identity, source, and any plans for the removal of the toxicity. The TRE shall be consistent with EPA guidance or subsequent procedures approved by the MPCA in attempting to identify and remove the source of the toxicity. Routinely scheduled acute toxicity test batteries required in this permit section shall be suspended for the duration of the TRE. Following successful completion of the TRE the Permittee shall conduct one year of quarterly testing, with the results of the first quarterly test due the first full calendar quarter following TRE completion (For example, if the TRE is completed on April 28, the first quarterly results are due by September 30.) S. WET ,Data and Test Acceptability Criteria (TAC) Submittal 5.1 All WET test data and TAC must be submitted to the MPCA by the dates required by this section of the permit using the Minnesota Pollution Control Agency Acute Toxicity Test Report and associated instruction form. Data not submitted on the correct form, or submitted incomplete, will be returned to the permittee and deemed incomplete until adequately submitted on the designated form (identified above). Data should be submitted to: . MPCA Attn: WQ Submittals Center 520 Lafayette Road North St. Paul, Minnesota 55155-4194 6. Permit Re -opening for WET 6.1 Based on the results of the testing, the permit may be modified to include additional toxicity testing and a whole effluent toxicity limit. 7. Whole Effluent Toxicity Requirement Definitions 7.1 "Test" refers to an individual species. 7.2 "Test Battery" consists of WET testing of all test species for the specified test. For acute WET testing, all test species includes Fathead minnows, daphnia magna, and ceriodaphnia dubia. 7.3 "Acute Whole Effluent Toxicity (WET) Toxicity Test" is a static renewal test conducted on an exponentially diluted series of effluent. The purpose is to calculate the proportion of effluent that causes 50 percent mortality/immobility of aquatic organisms at 48 daphnia magna and ceriodaphnia duubia or 96 hours for fathead minnows. An LC501EC50 (lethal/immobile concentration) less than or equal to 100 percent effluent constitutes a positive for toxicity: Permit Modified; October 16, 2014 Elk River WWTF Page 15 Permit Expires: kne 30, 2018 Permit H: MN0020788 Chapter 3. Whole Effluent Toxicity (WET) Testing - Acute 7. Whole Effluent Toxicity Requirement Definitions 7.4 "Acute toxic unit (TUa) is the reciprocal of the effluent dilution that causes the acute effect by the end of the acute exposure period. For example, a TUa equals (100% effluent)/(48 LC50IEC50 for daphnia magna and ceriodaphnia dubia or 96 hour LC50iL:C50 for fathead minnows in %). Chapter 4. Total Residual Oxidants Domestic 1. General Requirements 1.1 Total Residual Chlorine must be analyzed immediately. " This means within 15 minutes or less of sample collection. (40 CFR fart 136 and Standard Methods for the Examination of Water and Wastewater, Latest Edition) 1.2 A Method Detection Limit (MDL) must be established for this parameter. 3 The Reportable Limit must be established for this parameter. This should be based on the Method Detection Limit and laboratory, analyst, and equipment used in the analysis. The Reportable Limit cannot be greater than 0.1 mg/L. 1.4 The Method Detection Limit and Reportable Limit should be reassessed when the method, equipment, laboratory, or analyst changes. 1.5 Monitoring results below the Reportable Limit should be reported as "<" the Reportable Limit. For example, if the Reportable Limit is -0.01 mg/L and a parameter is not detected at a value of 0.01'mg/L or greater, the concentration shall be reported as "<0.0lmg11,.." The symbol "<" means "less than." L6 The equipment should be checked against a known standard at least monthly. 1.7 "Daily Maximum" for Total Residual Chlorine (TRC) concentration limits means: a. The value of a single sample in a 24-hour period if the concentration of TRC in that sample is 0.03 8 mg/L or less, or below the Reportable Limit (RL). b. if the concentration of TRC in the first sample is greater than 0.03 8 mg/L or greater than the RL, reporting the average of two to twelve samples analyzed in a 24-hour period is allowed. The second sample must be taken two hours after the first sample and subsequent samples are to be taken at one-hour intervals thereafter, not to exceed a total of twelve samples in a 24-hour period. Values below the Reportable Limit for TRC are assumed to be zero for averaging purposes only. Whenever daily TRC values are averaged, the 0.038 mg/L limit must be met and the average value must be reported, not < the RL. c. The average value of multiple daily TRC effluent sample analyses must meet the 0.038 mg/L limit to be in compliance. Chapter 5. Surface Discharge Stations 1.. Requirements for Specific Stations 1.1 SD 001: Submit a monthly DMR by 21 days after the end of each calendar month following permit issuance. 2. Sampling Location 2.1 Samples for Station SD001 shall be collected from the final outlet control structure. 2.2 Samples and measurements required by this permit shall be representative of the monitored activity. Permit Modified. October 16, 2414 Elft River WWTF Page I6 Permit Expires: June 30, 2018 Permit #: MN0020788 Chapter 5. Surface Discharge Stations 3. Surface Discharges 3.1 bloating solids or visible foam shall not be discharged in other than trace amounts. 3.2 Oil or other. substances shall not be discharged in amounts that create a visible color film. 3.3 The Permittee shall install and maintain outlet protection measures at the discharge stations to prevent erosion.. 4. Phosphorus Limits and Monitoring Requirements 4.1 Phosphorus limits are to be calculated as follows. 4.2 "12 -Month Moving Average" is a rolling average. To calculate, add all of the monthly average values during the last 12 months and divide by 12. 4.3 "12 -Month Moving Total" is a rolling. total. To calculate, for each month multiply the total volume of effluent flow (MG) by the monthly average concentration and by a 3.785 conversion factor to get kg/month. Then add all of the monthly values (kg/mo) during the last twelve months, starting with the monthly total for the month of the current reporting period. 4.4 "12 -Month Moving Average" is a rolling average. For the first 11 months after this limit becomes effective, add all of the monthly average values starting with the first full month the final limit became effective and divide by the number of months since that same date. This value should be reported on the eDMR in the 12 -Month Moving Average field. If using the eDMR calculator tool, replace the calculated value with this value. Starting the 12th month after this limit became effective and thereafter, add all of the monthly average values during the last 12 months and divide by 12. Starting the 12th month after this limit became effective and thereafter, the eDMR calculator tool will provide the correct value for this limit. 4.5 "12 -Month Moving Total" is a rolling total. For the first 11 months after this limit is effective, report the mass phosphorus discharged by calculating each month's kg/month, then adding each month's kg/month from the first month the new limit is effective through the 11th month after this limit became effective. This value should be reported on the eDMR in the 12 -Month Moving Total field. If using the eDMR calculator tool, replace the calculated value with this value. Starting the 12th month after this limit became effective and thereafter, calculate each kg/month then add all of the monthly values (kg/mo) during the last twelve months, starting with the monthly total_ for the month of the current reporting period. Calculate kg/month for each month by multiplying the total volume of effluent flow (MG) by the monthly average concentration and by a 3.785 conversion factor to get kg/month. Starting the 12th month after this limit became effective and thereafter, the eDMR calculator tool will provide the correct value for this limit. S. Mercury Limits and Monitoring .Requirements 5.1 Permittees are required to sample for TSS (grab sample) at the same time that Total/Dissolved Mercury samples are taken. Total Mercury, Dissolved Mercury, and TSS (grab sample) samples must be collected via grab samples. All results must be recorded on DMRs. 5.2 Total and Dissolved Mercury samples must be analyzed using the most current versions of EPA Method 1631 with clean techniques method 1669. Should another mercury analytical method that has a reportable quantitation level of <0.5 nglL that allows for low-level sample characterization be approved by the EPA and certified by an MPCA recognized accreditation body, the method may be used in place of 1631/1669. 6. Nitrogen Limits and Monitoring Requirements 6.1 "Total Nitrogen" is to be reported as the summation of the Total Kjeldahl Nitrogen and Total Nitrite + Nitrate Nitrogen values. Permit Modified: October 15, 2014 Elk' River WWTF Page 17 Permit Expires: dune 30, 2018 Chapter 5. Surface Discharge Stations 7. Priority Pollutants - Monitoring Requirements Permit 9: MN0020789 7.1 The Permittee shall monitor the effluent three times in the life of the permit for the fallowing specified priority pollutants. Sampling events shall not be less than one year apart. Monitoring shall be for the organic priority pollutants identified under the volatile, acid, base/neutral, and pesticide fractions using EPA methods 624, 625 and 648 (40 CFR Part 136, October 25, 1984) as listed in Table II of 40 CFR Fart 122, Appendix D. The following priority pollutant total metals shall also be monitored using either EPA method 200.8 or their corresponding graphite furnace method found in Table IS of 40 CFR Part 136: antimony, arsenic, beryl Iium, cadmium, chromium, copper, lead, nickel, selenium., silver, thallium, and zinc. In addition, the Permittee shall monitor for Total Cyanide (EPA method 335), Total Phenolic Compounds (EPA method 420), and Hardness (total as CaCO3) (EPA method 13.0). Total Mercury shall be monitored by EPA, method 1631, if not already required by the permit. 7.2 Submit the results of the first sampling event no later than three years prior to the expiration date of this permit. 7.3 Submit the results of the second sampling event no later than two years prior to the expiration date of this permit. 7.4 Submit the results of the third or final sampling event no later than one year prior to the expiration date of this permit. S. Discharge Monitoring Reports 8.1 The Permittee shall submit monitoring results for discharges in accordance with the limits and monitoring requirements for this station. If no discharge occurred during the reporting period, the Permittee shall check the "No Discharge" box on the Discharge Monitoring Report (DMR). Chapter 5. Waste Stream Stations 1.. Requirements for Specific Stations 1.1 WS 001: Submit a monthly DMR by 21 days after the end of each calendar month following permit issuance. 2. Sampling Location 2.1 Grab and composite samples for Station WS001 shall be collected at a point representative of total influent flow to the system. 3. Mercury Limits and Monitoring Requirements 3.1 Total Mercury samples must be grab samples and must be analyzed using EPA Method 1631 with clean techniques method 1669 and any revisions to those methods. Should another mercury analytical method that has a reportable quantitation level that allows for low-level sample characterization be approved by the EPA. and certified by the Minnesota Department of Health, the Permittee is authorized to use that method. 4. Nitrogen Limits and Monitoring Requirements 4.1 "Total Nitrogen" is to be reported as the summation of the Total Kjeldahl Nitrogen and Total Nitrite + Nitrate Nitrogen values. Permit Modified: October 16, 2014 Elk River WWTF Page 18 Permit Expires: June 30, 2018 Permit #: MN0020788 Chapter 7. Domestic 'Wastewater -- Mechanical System 1. Bypass Structures 1.1 All structures capable of bypassing the treatment system shall be manually controlled and kept Iocked at all times. 2. Sanitary Sewer Extension Permit 2.1 The Permittee may be required to obtain a Sanitary Sewer Extension Permit from the MPGA for any addition, extension or replacement to the sanitary sewer. If a sewer extension permit is required, construction may not begin until plans and specifications have been submitted and a written permit is granted except as allowed in Minn. Stat. 115.07, Subd. 3(b). 3. Operator Certification 3.1 The Permittee shall provide the appropriate number of operators with a Type IV certification to be responsible for the land application of biosolids or semisolids from commercial or industrial operations. 3.2 If the Permittee chooses to meet operator certification requirements through a contractual agreement, the Permittee shall provide a copy of the contract to the MPGA, WQ Submittals Center. The contract shall include the certified operator's name, certificate number, company name if appropriate, the period covered by the contract and provisions for renewal; the duties and responsibilities of the certified operator; the duties and responsibilities of the permittee; and provisions for notifying the MPCA 30 days in advance of termination if the contract is terminated prior to the expiration date. 3.3 The Permittee shall notify the MPCA in writing within 30 days of a change in operator certification or contract status. Mail changes to: Operator Certification, 520 Lafayette Road, St. Paul, MN, 55155-4194. 3.4 The Permittee shall provide a Class A state certified operator who is in direct responsible charge of the operation, maintenance and testing functions required to ensure compliance with the terms and conditions of this permit, Chapter S. Domestic Wastewater -- Pretreatment 1. Pretreatment - Definitions 1.I An "Individual Control Mechanism" is a document, such as an agreement or permit, that imposes limitations or requirements on an individual industrial user of the POTW. 1.2 "Significant Industrial User" (SICU) means any industrial user that: a. discharges 25,000 gallons per day or more of process wastewater; b. contributes a load of five (5) % or more of the capacity of the POTW; or c. is designated as significant by the Permittee or the MPGA on the basis that the SfU has a reasonable potential to adversely impact the POTW, or the quality of its effluent or residuals. (Minn. R. 7049.0120, Subp. 24) 2. Pretreatment - Permittee Responsibility to Control Users 2.1 It is the Permittee's responsibility to regulate the discharge from users of its wastewater treatment facility. The Permittee shall prevent any pass through of pollutants or any inhibition or disruption of the Permittee's facility, its treatment processes, or its sludge processes or disposal that contribute to the violation of the conditions of this permit or any federal or state law or regulation limiting the release of pollutants from the POTW. (Minn. R. 7049.0600) Permit Modified: October 16, 2014 Elk River WWTF Page 19 Permit Expires: hme 30, 2018 Permit #: MN0020788 Chapter S. Domestic Wastewater -- Pretreatment 2. Pretreatment - Permittee Responsibility to Control Users 2.2 The Permittee shall prohibit new discharges of non -contact cooling waters unless there is no cost effective alternative. Existing discharges of non -contact cooling water to the Permittee's wastewater treatment facility shall be eliminated, where elimination is cost-effective, or where an infiltration/inflow analysis and sewer system evaluation survey indicates the need for such removal. 2.3 If the Permittee accepts trucked -in wastes, the Permittee shall evaluate the trucked in wastes prior to acceptance in the same manner as it monitors sewered wastes. The Permittee shall accept trucked -in wastes only at specifically designated points. (Mintz. R. 7049.0149, Subp. 4) 2.4 The Permittee shall prohibit the discharge of the following to its wastewater treatment facility: a. pollutants which create a fire or explosion hazard, including any discharge with a flash point less than 60 degrees C (149 degrees )F); b. pollutants which would cause corrosive structural damage to the POTW, including any waste stream with a pH of less than 5.0; c. solid or viscous pollutants which would obstruct flow; d. heat that would inhibit biological activity, including any discharge that would cause the temperature of the waste stream at the POTW treatment plant headworks to exceed 40 degrees C (104 degrees F); e. pollutants which produce toxic gases, vapors, or fumes that may endanger the health or safety of workers; or f. any pollutant, including oxygen demanding pollutants such as biochemical oxygen demand, released at a flow rate or pollutant concentration that will cause interference or pass through. (Minn. R. 7049.0140) 2.5 Pollutant of concern means a pollutant that is or may be discharged by an industrial user that is, or reasonably should be of concern on the basis that it may cause the permittee to violate any permit limits on the release of pollutants. The following pollutants shall be evaluated to determine if they should be pollutants of concern: pollutants limited in this permit, pollutants for which monitoring is required in this permit, pollutants that are likely to cause inhibition of the Permittee's POTW, pollutants which may interfere with sludge disposal, pollutants for which the Pennittee's treatment facility has limited capacity. (Minn. R. 7049.0120, Subp. 13) 3. Control of Significant Industrial Users 3.1 The Permittee shall impose pretreatment requirements on SIUs which will ensure compliance with all applicable effluent limitations and other requirements set forth in this permit or any federal or state law or regulation limiting the release of pollutants from the POTW. These requirements shall be applied to SIUs by means of an individual control mechanism. (Minn. R. 7049.0609) 3.2 The Permittee shall not knowingly enter into an individual control mechanism with any user that would allow the user to contribute an amount or strength of wastewater that would cause violation of any limitation or requirement in the permit, or any applicable federal, state or local law or regulation. (Minn. R. 7049.0600 Subp. 3) 4. Monitoring of Significant Industrial Users 4.1 The Permittee shall obtain from SIUs specific information on the quality and quantity of the SM's discharges to the Permittee's POTW. Except where specifically requested by the Permittee and approved by the MPCA, this information shall be obtained by means of representative monitoring conducted by the Permittee or by the SIU under requirements imposed by the Permittee in the S1U's individual control mechanism. Monitoring performed to comply with this requirement shal I include all pollutants for which the SlU is significant and shall be done at a frequency commensurate with the significance of the SIU. (Minn. R. 7049.0719) Permit Modified: Wober 16, 2014 Elk River WWTF Page 20 Permit Expires: June 30, 2018 - Permit #: MN0020788 Chapter & Domestic Wastewater --Pretreatment S. Reporting and Notification 5.1 This permit may be modified in accordance with Minnesota Rules, ch. 7001 to require development of a pretreatment program approvable cinder the Federal General Pretreatment Regulation (40 GFR 403). 5.2 If a SILT discharges to the POTW during a given calendar year, the Permittee shall submit a Pretreatment Annual Report for that calendar year, due by January 31 of the following year. The Pretreatment Annual Report shall be submitted on forms provided by the agency or shall provide equivalent information. The Permittee shall submit the pre-treatment report to the following address: MPCA Attn: WQ Submittals Center 520 Lafayette Road North St. Paul, Minnesota 55155-4194 (Minn..R. 7049.0720) 5.3 The Permittee shall notify the MPCA in writing of any: a. SID of the Permittee's POTW which has not been previously disclosed to the MPGA,.; b. anticipated or actual changes in the volume or quality of discharge by an industrial user that could result in the industrial user becoming an SlU as defined in this chapter; or c. anticipated or actual changes in the volume or quality of discharges by a SIU that would require changes to the ,SIU's required local limits. This notification shall be submitted within 30 days of identifying the IIJ as a SIU. Where changes are proposed, they must be submitted prior to changes being made. (Minn. R. 7449.0700, Subp. 1) 5.4 Upon notifying the MPGA of a SItJ or change in a SIU discharge as required above, the Permittee shall submit the following information on forms provided by the agency or in a comparable format: a. the identity of the SIU and a description of the SIU's operation and process; b. a characterization of the SAT's discharge; c. the required local limits that will be imposed on the SIU; d. a technical justification of the required local limits; and e. a plan for monitoring the SIU which is consistent with monitoring requirements in this chapter. (Minn. R. 7049.0704) 5,5 In addition, the Permittee shall, upon request, submit the following to the MPGA for approval: a. additional information on the SIU, its processes and discharge; b. a copy of the individual control mechanism used to control the SIU; c. the Permittee's legal authority to be used for regulating the SIU; and d. the Permittee's procedures for enforcing the requirements imposed on the SIU. (Minn. R. 7049.0700, Subp. 3) Permit Modified: October 16, 2014 Elk River WWTF Page 21 Permit Expires; June 30, 2018 Permit #: MN0020788 Chapter 8. Domestic Wastewater -- Pretreatment 5. Reporting and Notification 5.6 The permittee shall notify NI -PCA of any of its industrial users that may be subject to national categorical pretreatment standards. Chapter 9. Siosolids-Land Application 1. Authorization 1.1 This permit authorizes the Permittee to store and land apply domestic wastewater treatment biosolids in accordance with the provisions in this chapter and Minnesota Rules, ch. 7041. 1.2 Permitters who prepare bulk biosolids raust obtain approval of the sites on which bulk biosolids are applied before they are applied unless they are Exceptional Quality Biosolids. Site application procedures are set forth in Minn. R. ch. 7041.0800, 2. Compliance Responsibility 2.1 The Permittee is responsible for ensuring that the applicable requirements in this chapter and Minn. R. ch. 7041 are met when biosolids are prepared, distributed, or applied to the land. 3. Notification Requirements 3.1 The Permittee shall provideinformation needed to comply with the biosolids requirements of Minn. R. ch. 7041 to others who prepare or use the biosolids. Permit Modified: October 18, 2014 Elk River W WTF Page 22 Permit Expires: June 34, 2018 Permit it: MN0020788 Chapter 9, Biosolids-Land Application 4. Pollutant Limits 4.1 Biosolids which are applied to the land must not exceed the ceiling concentrations in Table 1 and must not be applied so that the cumulative amounts of pollutant in Table 2 are exceeded. Table 1 Ceiling Concentrations (dry weight basis) Parameter in units mg/kg Arsenic 75 Cadmium 85 Copper 4300 Lead 840 Mercury 57 Molybdenum 75 Nickel 420 Selenium 100 Zinc 7500 Table 2 Cumulative Loading Limits Parameter in units lbs/acre Arsenic 37 Cadmium 35 Copper 1339 Lead 258 Mercury 15 Molybdenum not established* Nickel 375 Selenium 84 Zinc 2500 *The cumulative limit for molybdenum has not been established at the time of permit issuance 5. Pathogen and Vector Attraction Reduction 5.1 Biosolids shall be processed, treated, or be incorporated or injected into the soil to meet one of the vector attraction reduction requirements in Minnesota Rules, pt. 7041.1400. 51 Biosolids shall be processed or treated by one of the alternatives in Minnesota Rules, pt. 7041.1300 to meet the Class A or glass B standards for the reduction of pathogens. When Class B biosolids are applied to the land, the site restrictions in Minnesota Rules, pt. 7041.1300 must also he met. Permit Modified: October 16, 2014 Elk River WW TF Page 23 Permit Expires; .lune 30, 2418 Chapter 9. Biosolids-Land Application 5. Pathogen and Vector Attraction Reduction Permit 6: MN0020788 5.3 The minimum duration between application and harvest, grazing or public access to areas where Class B biosolids have been applied to the land is as follows: a. 14 months for food crops whose harvested parts may touch the soil/biosolids mixture (such as melons, squash, tomatoes, etc.), when Biosolids are surface applied, incorporated or injected. b. 20 months or 38 months depending on the application method for food crops whose harvested parts grow in the soil (such as potatoes, carrots, onions, etc.). The 20 month time period is required when biosolids are surface applied or surface applied and incorporated after they have been on the soil surface for at least four (4) months. The 38 month time period is required when the biosolids are injected or surface applied and incorporated within four (4) months of application. c. 30 days for feed crops, other food crops (such as field corn, sweet corn, etc.), hay or fiber crops when biosolids are surface applied, incorporated or injected. d. 30 days for grazing of animals when biosolids are surface applied, incorporated or injected. e. One year where there is a high potential for public contact with the site, (such as a reclamation site located in populated areas, a construction site located in a city, turf farms, plant nurseries, etc.) and 30 days where there is low potential for public contact (such as agricultural land, forest, a reclamation site located in an unpopulated area, etc.) when biosolids are surface applied, incorporated, or injected. 6. Management Practices 6.1 The management practices for the land application of biosolids are described in detail in Minn. R. ch. 7041.1200 and must be followed unless specified otherwise in a site approval letter or a permit issued by the MPCA. 6.2 Overall management requirements: a. Biosolids must not be applied to the land if it is likely to adversely affect a threatened or endangered species listed under Section 4 of the Endangered Species Act or its designated critical habitat.. b. Biosolids must not be applied to flooded, frozen or snow covered ground so that the biosolids enter wetlands or other waters of the state. c. Biosolids must be applied at an agronomic rate unless specified otherwise by the NTCA in a permit. d. Biosolids shall not be applied within 33 feet of a wetland or waters of the state unless specified otherwise by the MPCA in a permit. 7. Monitoring Requirements 7.1 At a minimuan, biosolids must be monitored at the frequencies specified in "fable 3 for the parameters Iisted above, and any pathogen or vector attraction reduction requirements in Minnesota Rules, pts. 7041.1300 and 7041.1400 if used to determine compliance with those parts. Table 3 Minimum Sampling Frequencies Biosolids Applied* Biosolids Applied* hFrequency (metric tons/365-day period) (tons/365-day period) (times/365-day period) >0 but <290 >0 but <320 1 >=290 but <1,500 >=320 but <1,650 4 >=1,500 but <15,000 >-1,650 but <16,500 6 >= 15,000 >=16,500 12 * Either the amount of bulk biosolids applied to the land or the amount of biosolids received by a person who prepares biosolids that are sold or given away in a bag or other container for application to the land (dry weight basis). Permit Modified: October 16, 2014 Elk River WWTF Page 24 Permit Expires: June 30, 2018 Chapter 9. Biosolids-Land .Application 7. Monitoring Requirements Permit #: MN0020788 7.2 Representative samples of biosolids applied to the land must be analyzed by methods specified in Minnesota Rule pt. 7041.3200 for the following parameters: arsenic, cadmium, copper, lead, mercury, molybdenum, nickel, selenium, zinc, Kjeldahl nitrogen, ammonia nitrogen, total solids, volatile solids, phosphorus, potassium and pH. 7.3 Representative samples of biosolids that are transferred to storage units and are stored for more than two years shall be analyzed by methods specified in Minnesota Rule pt. 7041.3200 for each cropping year they are stored for the following parameters: arsenic, cadmium, copper, lead, molybdenum, nickel, selenium, and zinc. Mercury is specifically NOT included in the stored biosolids analysis because of the short holding time [28 days] required between sampling and analysis. 7.4 Increased sampling frequencies are specified for the parameters listed in Table 4. Sampling at a frequency at twice the minimum frequencies in Table 3 is required if concentrations listed in Table 4 are exceeded (based on the average of all analyses made during the previous cropping year). Table 4 Increased Frequency of Sampling Parameter (mg/kg dry weight basis) Arsenic 38 Cadmium 43 Copper 2150 Lead 420 Mercury 28 Molybdenum 38 Nickel 210 Selenium 50 Zinc 3750 8. Records 8.1 The Permittee shall keep records of the information necessary to show compliance with pollutant concentrations and loadings, pathogen reduction requirements, vector attraction reduction requirements and management practices as specified in Minnesota Rules, pt. 7041.1.600, as applicable to the quality of biosolids produced. 9. Reporting Requirements 9.1 The Permittee must notify the MPCA in writing when 90 percent or more of any of the cumulative pollutant loading rates listed for any Land Application Sites has been reached for a site. 9.2 If, during any cropping year, biosolids were transferred, or not land applied, the Permittee shall submit a Biosolids Annual Report by December 31 following the end of the cropping year. The report shall state that biosolids were not land applied, how much was generated, and where they were transferred to. 9.3 For biosolids that are stored for more than two years, the Biosolids Annual Report must also include the analytical data from the representative sample of the biosolids generated during the cropping year. 9.4 The Permittee shall submit the Biosolids Annual Report to: Biosolids Coordinator Minnesota Pollution Control Agency 520 Lafayette Road North St. Paul, Minnesota 55155-4194 Permit Modified: October 16, 2014 Elli River WWTF Page 25 Permit Expires: June 30, 2018 Permit #: MN0020788 Chapter 9. Biosolids-Land Application 9. Reporting Requirements 9.5 By December 31 following the end of each cropping year, the Permittee shall submit a Biosolids Annual Report for the land application of biosolids on a form provided by or approved by the MPGA. The report shall include the requirements in Minnesota Rules, part 7041.1700. Chapter 10. Total Facility Requirements 1. General Requirements General Requirements 1.1 Definitions. Refer- to the'Permit Users Manual' found on the MPCA website (www.pca.state.mn.us) for standard definitions. 1.2 Incorporation by Reference. The following applicable federal and state laws are incorporated by reference in this permit, are applicable to the Permittee, and are enforceable parts of this permit: 40 CFR pts. 122.41, 1.22.42, 136, 403 and 503; Minn. R. pts. 7001, 7041, 7045, 7050, 7052, 7053, 7060, and 7080; and Minn. Stat. Sec. 115 and 116. 1.3 Permittee Responsibility. The Permittee shall perform the actions or conduct the activity authorized by the permit in compliance with the conditions of the permit and, if required, in accordance with the plans and specifications and/or operations and maintenance manuals approved by the Agency. (Minn. R. 7001.0150, subp. 3, item E) 1.4 Toxic Discharges Prohibited. Whether or not this permit includes effluent limitations for toxic pollutants, the Permittee shall not discharge a toxic pollutant except according to Code of Federal Regulations, Title 40, sections 400 to 460 and Minnesota Rules 7050, 7052, 7053 and any other applicable. MPCA rules. (Minn. R. 7001.1090, subp./, item A) 1.5 Nuisance Conditions Prohibited. The Permittee's discharge shall not cause any nuisance conditions including, but not limited to: floating solids, scum and visible oil film, excessive suspended solids, material discoloration, obnoxious odors, gas ebullition, deleterious sludge deposits, undesirable slimes or fungus growths, aquatic habitat degradation, excessive growths of aquatic plants, acutely toxic conditions to aquatic life, or other adverse impact on the receiving water. (Minn. R. 7050.0210 subp. 2) 1.6 Property Rights. This permit does not convey a property right or an exclusive privilege. (Minn. R. 7001.0150, subp. 3, item C) 1.7 Liability Exemption. In issuing this permit, the'state and the MPCA assume no responsibility for damage to persons, property, or the environment caused by the activities of the Permittee in the conduct of its actions, including those activities authorized, directed, or undertaken under this permit. To the extent the state and the MPCA may be liable for the activities of its employees, that liability is explicitly limited to that provided in the Tort Claims Act. (Minn. R. 7001.0150, subp. 3, item C) 1.8 The MPCA's issuance of this permit does not obligate the MPCA to enforce local laws, rules, or plans beyond what is authorized by .Minnesota Statutes. (Minn. R. 7001.0150, subp.3, item D) 9 Liabilities. The MPCA's issuance of this permit does not release the Permittee from any liability, penalty or duty imposed by Minnesota or federal statutes or rules or local ordinances, except the obligation to obtain the permit. (Minn. R. 7001.0150, subp.3, item A) 1.10 The issuance of this permit does not prevent the future adoption by the MPCA of pollution control rules, standards, or orders more stringent than those now in existence and does not prevent the enforcement of these rules, standards, or orders against the Permittee. (Minn. R. 7001.0150, subp.3, item B) Permit Modified: October f 6, 2014 Elk .Diver WWTF Page 26 Permit Expires: Jane 30, 2018 Permit #: MN0020788 Chapter 10. Total Facility Requirements 1. General Requirements 1.11 Severability. The provisions of this permit are severable and, if any provisions of this permit or the application of any provision of this permit to any circumstance are held invalid, the application of such provision to other circumstances and the remainder of this permit shall not be affected thereby. 1.12 Compliance with Other Rules and Statutes. The Permittee shall comply with all applicable air quality, solid waste, and hazardous waste statutes and rules in the operation and maintenance of the facility. 1.13 Inspection and Entry. When authorized by Minn. Stat. Sec. 115.04; 11513.17, subd. 4; and 116.491, and upon presentation of proper credentials, the agency, or an authorized employee or agent of the agency, shall be allowed by the Permittee to enter at reasonable times upon the property of the Permittee to inspect and copy books, papers, records, or memoranda pertaining to the construction, modification, or operation of the facility covered by the permit or pertaining to the activity covered by the permit; and to conduct surveys and inspections, including sampling or monitoring, pertaining to the construction, modification, or operation of the facility covered by the permit or pertaining to the activity covered by the permit. (Minn. R. 7001.0150, subp.3, item I) 1.14 Control Users. The Permittee shall regulate the users of its wastewater treatment facility so as to prevent the introduction of pollutants or materials that may result in the inhibition or disruption of the conveyance system, treatment facility or processes, or disposal system that would contribute to the violation of the conditions of this permit or any federal, state or local law or regulation. Sampling 1., 15 Representative Sampling. Samples and measurements required by this permit shall be conducted as specified in this permit and shall be representative of the discharge or monitored activity. (40 CFR 122.41 0)(1)). 1.16 Additional Sampling. If the Permittee monitors more frequently than required, the results and the frequency of monitoring shall be reported on the Discharge Monitoring Report (DMR) or another MPGA -approved form for that reporting period. (Minn. R. 7001.1090, subp. 1, item E) 1.17 Certified Laboratory. A laboratory certified by the Minnesota Department of Health and/or registered by the MPCA shall conduct analyses required by this permit. Analyses of dissolved oxygen, pH, temperature, specific conductance, and total residual oxidants (chlorine, bromine) do not need to be completed by a certified laboratory but shall be completed by equipment that is verified for accuracy before use. (Minn. Stat. See. 144.97 through 144.98 and Minn: R. 4740.2010 and 4740.2050 through 4740.2120) (Minn. R. 4740.2014 and 4740.2054 through 2120) 1.1 S Sample Preservation and Procedure. Sample preservation and test procedures for the analysis of pollutants shall conform to 40 CFR Part 136 and Minn. R. 7041.3200. 1.19 Equipment Calibration: Flow meters, pumps, flumes, lift stations or other flow monitoring equipment used for purposes of determining compliance with the permit shall be verified and/or calibrated for accuracy at least - twice annually. (Minn. R. 7001.0150, subp. 2, items B and C) Permit Modified: October 16, 2014 Elk River WWTF Page 27 Permit Expires: June 30, 2018 Permit 4: MN0020788 Chapter 10. 'Total Facility Requirements I. General Requirements 1.20 Maintain Records. The Permittee shall keep the records required by this permit for at least three years, including DMRs, inspections, calibration and accuracy verifications, maintenance records, any calculations, original recordings from field or automatic monitoring instruments, laboratory sheets, chain of custody forms, copies of all reports required by the permit, and all data used to complete the permit application. The Permittee shall extend these record retention periods upon request of the MPCA. The Permittee shall maintain records for each sample and measurement. The records of all monitoring and testing which is related to compliance with the terms and conditions of the permit shall include the following information (Minn. R. 7001.0150, subp. 2, item C): a. The exact place, date, and time of the sample or measurement; b. The date of analysis; c. The name of the person(s) who performed the sample collection and/or measurement: d. The name of the person(s) who performed the analysis and/or calculation; e. The analytical techniques, procedures and methods used; and f. The results of the analysis. 1.21 Completing Reports. The Permittee shall submit the results of the required sampling and monitoring activities on the forms provided, specified, or approved by the MPCA. The information shall be recorded in the specified areas on those forms and in the units specified. (Minn. R. 7001.1090, subp. 1, item D; Minn. R. 7001.0150, subp. 2, item 13) Required forms may include: DMR Sample Values and/or Operational Spreadsheets or DMR Supplemental Form: If required, individual values for each sample and measurement must be recorded on the DMR Sample Values and/or Operational Spreadsheets provided by the MPCA. DMR Sample Values and/or Operational Spreadsheets or DMR Supplemental Forms shall be submitted with the appropriate eDMRs. Note: Required summary information MUST be recorded on the electronic Discharge Monitoring Report. Summary information that is submitted ONLY on the DMR Sample Values and/or Operational Spreadsheets or DMR Supplemental Form does not comply with the reporting requirements. Pemit Modified: October Ib, 2014 Elk River 'W WTF Page 28 Permit Expires: June 30, 2018 Chapter 10. Total Facility Requirements 1. General Requirements Permit #: MN0020788 1.22 Submitting Reports. Electronic Discharge Monitoring Reports (eDMRs), DMR Sample Values and/or Operational Spreadsheets or DMR Supplemental Forms, and related attachments shall be submitted electronically via the MPCA Online Services Portal after authorization is approved. Authorization must be applied for and approved prior to submittal via the Online Services Portal. eDMRs and DMR Sample Values and/or Operational Spreadsheets or DMR Supplemental Forms shall be electronically submitted by the 21st day of the month following the monitoring period end or as otherwise specified in this permit. Electronic DMR subrtiittaI must be complete on or before 11:59 PM of the 21 st day of the month following the end of the monitoring period or as otherwise specified in this permit. A DMR shall be submitted for each required station even if no discharge occurred during the monitoring period. (Minn. R. 7001.0150, subps. 2.13 and 3.H) If electronic submittal is not possible, the Permittee must apply for an exception to electronic submittal. Exceptions requests for extreme conditions (no computer on-site is not an extreme condition) must at a minimum contain the extreme reason for the exception, actions to be taken, and date the facility will submit eDMR. All exception requests, and paper DMRs, DMR supplemental forms, and related attachments must be submitted by the 21st day of the month following the monitoring period end to: MPCA Attn: Discharge Monitoring Reports 520 Lafayette Road North St. Paul, Minnesota 55155-4194 Other reports required by this permit shall be submitted on or before the due date specified in the permit to: MPCA Attn: WQ Submittals Center 520 Lafayette Road North St. Paul, Minnesota 55155-4194 23 Incomplete or Incorrect Reports. The Permittee shall immediately submit an electronically amended report or eDMR to the MPGA upon discovery by the Permittee or notification by the MPCA that it has submitted an incomplete or incorrect report or eDMR. The amended report or eDMR shall contain the missing or corrected data along with an explination of the circumstances of the incomplete or incorrect report. The explination must be added to the eDMR comments field or must be an attachment to the eDMR. If it is impossible to electronically amend the report or eDMR, the Permittee shall immediately notify the MPCA and the MPGA will provide direction for the amendment submittals. (Minn. R. 7001.0150 subp. 3, item G) 1.24 Required 'Signatures. All DMRs, forms, reports, and other documents submitted to the MPCA shall be signed by the Permittee or the duly authorized representative of the Permittee. Minn. R. 7001.0150, subp. 2, item D. The person or persons that sign the DMRs, forms, reports or other documents must certify that he or she understands and complies with the certification requirements of Minn. R. 7001.0070 and 7001.0540, including the penalties for submitting false information. Technical documents, such as design drawings and specifications and engineering studies required to be submitted as part of a permit application or by permit conditions, must be certified by a registered professional engineer. (Minn. R. 7001.0540) Permit Modified: October 16, 2014 Elk River WWTF Page 29 Permit Expires: June 30, 2018 Chapter 10. Total Facility Requirements 1. General Requirements Permit #: MM0020788 1.25 Detection Level. The Permittee shall report monitoring results below the reporting limit (RL) of a particular instrument as "<" the value of the. RL. For example, if an instrument has a RL of 0.1 mglL and a parameter is not detected at a value of 0.1 mgl1, or greater, the concentration shall be reported as "<0.1 mg&" "Non-detected," "undetected," "below detection limit," and "zero" are unacceptable reporting results, and are permit reporting violations. (Minn. R. 7001.0150, subp: 2, item 13) Where sample values are less than the level of detection and the permit requires reporting of an average, the Permittee shall calculate the average as follows: a. If one or more values are greater than the level of detection, substitute zero for all nondetectable values to use in the average calculation. b. If all values are below the level of detection, report the averages as "c" the corresponding level of detection. c. Where one or more sample values are less than the level of detection, and the permit requires reporting of a mass, usually expressed as kg/day, the Permittee shall substitute zero for all nondetectable values. (Minn. R. 7001.0150, subp. 2, item B) 1.26 Records. The Permittee shall, when requested by the Agency, submit within a reasonable time the information and reports that are relevant to the control of pollution regarding the construction, modification, or operation of the facility covered by the permit or regarding the conduct of the activity covered by the permit. (Minn. R. 7001.0150, subp. 3, item H) 1.27 Confidential Information. Except for data determined to be confidential according to Minn. Stat. Sec. 116.075, subd. 2, all reports required by this permit shall be available for public inspection. Effluent data shall not be considered confidential. To request the Agency maintain data as confidential, the Permittee must fol low, Minn. R. 7000.1300. Noncompliance and Enforcement 1.28 Subject to Enforcement .Action and Penalties. Noncompliance with a term or condition of this permit subjects the Permittee to penalties provided by federal and state law set forth in section 309 of the Clean Water Act; United States Code, title 33, section 1319, as amended; and in Minn. Stat. Sec. 115.071 and 116.072, including monetary penalties, imprisonment, or both. (Minn. R. 7001.1090, subp. 1, item B) 1.29 Criminal Activity. The Permittee may not knowingly make a false statement, representation, or certification in a record or other document submitted to the Agency. A person who falsifies a report or document submitted to the Agency, or tampers with, or knowingly renders inaccurate a monitoring device or method required to be maintained under this permit is subject to criminal and civil penalties provided by federal and state law. (Minn. R. 7001.0150, subp.3, item G., 7001.1090, subps. 1, items G and H and Minn. Stat. See. 609.671) 1.30 Noncompliance Defense. It shall not be a defense for the Permittee in an enforcement action that it would have been necessary to halt or reduce the permitted activity in order to maintain compliance with the conditions of this permit. ( 40 CFR 122.41(c)) Permit Modified: October 16, 2014 Elk River WWTF Page 30 Permit Expires: lune 30, 2018 Permit #-. MN0020788 Chapter 11.0. Total Facility Requirements 1. General Requirements 1.31 Effluent Violations. If sampling by the Permittee indicates a violation of any discharge limitation specified in this permit, the Permittee shall immediately investigate the cause of the violation, which may include but is not Iimited to, collecting additional samples and/or other investigative actions. The Permittee shall also take appropriate action to prevent fiuture violations. If the permittee discovers that noncompliance with a condition of the permit has occurred which could endanger human health, public drinking water supplies, or the environment, the Permittee shall within 24 hours of the discovery of the noncompliance, orally notify the commissioner and submit a written description of the noncompliance within 5 days of the discovery. The written description shall include items a. through e., as listed below. If the Permittee discovers other non-compliance that does not explicitly endanger human health, public drinking water supplies, or the environment, the non-compliance shall be reported during the next reporting period to the MPCA with its Discharge Monitoring Report (DMR). If no DMR is required within 30 days, the Permittee shall submit a written report within 30 days of the discovery of the noncompliance. This description shall include the following information: a. a description of the event including volume, duration, monitoring results and receiving waters; b. the cause of the event; c. the steps taken to reduce, eliminate and prevent reoccurrence of the event; d. the exact dates and times of the event; and e. steps taken to reduce any adverse impact resulting from the event. (Minn. R. 7001.0150, subp. 3k) 1.32 Upset Defense. In the event of temporary noncompliance by the Permittee with an applicable effluent limitation resulting from an upset at the Permmittee's facility due to factors beyond the control of the Permittee, the Permittee has an affirmative defense to an enforcement action brought by the Agency as a result of the noncompliance if the Permittee demonstrates by a preponderance of competent evidence: a. The specific cause of the upset; b. That the upset was unintentional; c: That the upset resulted from factors beyond the reasonable control of the Permittee and did not result from operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventative maintenance, or increases in production which are beyond the design capability of the treatment facilities; d. That at the time of the upset the facility was being properly operated; e. That the Permittee properly notified the Commissioner of the upset in accordance with Minn. R. 7001.1090, subp. 1, item 1; and f That the permittee implemented the remedial measures required by Minn. R. 7001.0150, subp. 3, item J. Release 1.33 Unauthorized Releases of Wastewater Prohibited. Except for discharges from outfalls specifically authorized by this permit, overflows, discharges, spills, or other releases of wastewater or materials to the environment, whether intentional or not, are prohibited. However, the MPGA will consider the Permittee's compliance with permit requirements, frequency of release, quantity, type, location, and other relevant factors when determining appropriate action. (40 CFR 122.41 and Minn. Stat. Sec 115.051) Permit Modified: October 16, 2013 Elk River WWTF Page 31 Permit Expires: !tine 30, 2018 Permit #: MN0020788 Chapter 10. Total Facility Requirements 1. General Requirements 1.34 Discovery of a release. Upon discovery of a release, the Permittee shall: a. 'fake all reasonable steps to immediately end the release. b. Notify the Minnesota Department.of Public Safety Duty Officer at 1(800)422-0798 or (651)649-5451 (metro area) immediately upon discovery of the release. You may contact the MPGA during business hours at 1(800)657-3864 or (651)296-6300 (metro area). c. Recover as rapidly and as thoroughly as possible all substances and materials released or immediately take other action as may be reasonably possible to minimize or abate pollution to waters of the state or potential impacts to human health caused thereby. If the released materials or substances cannot be immediately or completely recovered, the Permittee shall contact the MPCA. If directed by the MPGA, the Permittee shall consult with other local, state or federal agencies (such as the Minnesota Department of Natural Resources and/or the Wetland Conservation Act authority) for implementation of additional clean-up or remediation activities in wetland or other sensitive areas. 1.35 Sampling of a release. Upon discovery of a release, the Permittee steal l: a. Collect representative samples of the release. The Permittee shall sample the release for parameters of concern immediately following discovery of the release. The permittee may contact the MPCA during business hours to discuss the sampling parameters and protocol. In addition, Fecal Coliform Bacteria samples shall be collected where it is determined by the Permittee that the release contains or may contain sewage. If the release cannot be immediately stopped, the Permittee shall consult with MPCA regarding additional sampling requirements. Samples shall be collected at least, but not limited to, two times per week for as long as the release continues. b. Submit the sampling results on the Release Sampling Foam (http://www.pea.state.mn.us/index.php/view-document.html?gid=18867). The release Sampling Form shall be submitted to the MPCA with the next DMR or within 30 days whichever is sooner. Bypass 1.36 Anticipated bypass. The permittee may allow any bypass to occur which does not cause effluent limitations to be exceeded, but only if the bypass is for essential maintenance to assure efficient operation of the facility. The permittee shall submit prior notice, if possible at least ten days before the date of the bypass to the MPCA (40 CFR 122.41(m)(2.) and 122.41(m)(3) and Minn. R. Ch. 7001,1090, subp. 1, ]). The notice of the need for an anticipated bypass shall include the following information: a. The proposed date and estimated duration of the bypass; b. The alternatives to bypassing; and c. A proposal for effluent sampling during the bypass. Any bypass wastewater must enter waters of the state from outfalls specifically authorized by this permit. Therefore, samples shall be collected at the frequency and location identified in this permit or two times per week for as long as the bypass continues, whichever is more frequent. Permit Modified: October 16, 2014 Elk )liver WWTF Page 32 Permit Expires: dune 30, 2018 Permit N: MN0020789 Chapter 10. Total Facility Requirements 1. General Requirements 1.37 All other bypasses are prohibited. The MPCA may take enforcement action against the Permittee for a bypass, Unless the specific conditions described in Minn. R. Ch. 7001.1090 subp. 1, K and 122.4 1 (m)(4)(i) are met. In the event of an unanticipated bypass, the permittee shall: a. Take all reasonable steps to immediately end the bypass. b. Notify the Minnesota Department of Public Safety Ditty Officer at 1(800)422-0798 or (651)649-5451 (metro area) immediately upon commencement of the bypass. You may contact the MPCA during business hours at 1(800)657-3864 or (651)296-6300 (metro area). (Minn. Stat. Sec 115.061) c. Immediately take action as may be reasonably possible to minimize or abate pollution to waters of the state or potential impacts to human health caused thereby. if directed by the MPCA, the Permittee shall consult with other local, state or federal agencies for implementation of abatement, clean -Lip, or remediation activities. d. Only allow bypass wastewater as specified in this section to enter waters of the state from outfalls specifically authorized by this permit. Samples shall be collected at the fi-equency and location identified in this permit or two times per week far as long as the bypass continues, whichever is more frequent. The permittee shall also follow the reporting requirements for effluent violations as specified in this permit. Operation and Maintenance 1.38 The Permittee shall at all times properly operate and maintain the facilities and systems of treatment and control, and the appurtenances related to them which are installed or used by the Permittee to achieve compliance with the conditions of the permit. Proper operation and maintenance includes effective performance, adequate funding, adequate operator staffing and training, and adequate laboratory and process controls, including appropriate quality assurance procedures. The Permittee shall install and maintain appropriate backup or auxiliary facilities if they are necessary to achieve compliance with the conditions of the permit and, for all permits other than hazardous waste facility permits, if these backup or auxiliary facilities are technically and economically feasible Minn. R. 7001.0150. subp. 3, item F. 1.39 In the event of a reduction or loss of effective treatment of wastewater at the facility, the Permittee shall control production or curtail its discharges to the extent necessary to maintain compliance with the terms and conditions of this permit. The Permittee shall continue this control or curtailment until the wastewater treatment facility has been restored or until an alternative method of treatment is provided. (Minn. R. 7001.1090, subp. 1, item C) 1..40 Solids Management. The Permittee shall properly store, transport, and dispose of biosolids, septage, sediments, residual solids, filter backwash, time waste, screenings, oil, grease, and other substances so that pollutants do not enter surface waters or ground waters of the state. Solids should be disposed of in accordance with local, state and federal requirements. (40 CFR 503 and Minn. R. 7041 and applicable federal and state solid waste rules) 1.41 Scheduled Maintenance. The Permittee shall schedule maintenance of the treatment works during non-critical water quality periods to prevent degradation of water quality, except where emergency maintenance is required to prevent a condition that would be detrimental to water quality or human health. ( Minn. R. 7001.0150. subp. 3, item F and Minn. R. 7001.0150. subp. 2, item B) - 1.42 Control Tests. In -plant control tests shall be conducted at a frequency adequate to ensure compliance with the conditions of this permit. (Minn. R. 7001.0150. subp. 3, item F and Minn. R. 7001.0150. subp. 2, item B) Changes to the Facility or Permit Permit Modified: October 16, 2014 Elk River WWTF Page 33 Pennit Expires: June 30, 2018 Permit #: NM0020789 Chapter 10. Total Facility Requirements 1. General Requirements 1.43 Except as provided under Minnesota Statutes, section 115.07, subdivisions 1 and 3, no person required by statute or rule to obtain a permit may construct, install, modify, or operate the facility to be permitted, nor shall a person commence an activity for which a permit is required by statute or rule until the agency has issued a written permit for the facility or activity. (Minn. R. 7001.0030) Permittees that propose to make a change to a facility or discharge that requires a permit modification must follow Minn. R. 7001.0190. If the Permittee cannot determine whether a permit modification is needed, the Permittee must contact the MPCA prior to any action. It is recommended that the application for permit modification be submitted to the MPCA at least 180 days prior to the planned change. 1.44 Submittal of plans and specifications for MPCA approval is not required for routine maintenance work. Routine maintenance work means installation of new equipment to replace worn out or broken items, provided the new equipment is the same design size and has the same design intent. 1W instance, a broken sewer pipe, a worn out lift station pump, or a malfunctioning aerator or blower can be replaced with the same design --sized equipment (or pipe) without MPCA approval. If the proposed construction is not expressly authorized by this permit, it may require a permit modification. If the construction project requires an Environmental Assessment Worksheet under Minn. R. 4410, no construction shall begin until a negative declaration is issued and all approvals are received or implemented. 1.45 Report Changes. The Permittee shall give advance notice as soon as possible to the MPCA of any substantial changes in operational procedures, activities that may alter the nature or frequency of the discharge, and/or material factors that may affect compliance with the conditions of this permit. (Minn. R. 7001.0150, subp. 3, item M) 1.46 Chemical Additives. The Permittee shall receive prior written approval from the MPCA before increasing the use of a chemical additive authorized by this permit, or using a chemical additive not authorized by this permit, in quantities or concentrations that have the potential to change the characteristics, nature and/or quality of the discharge. The Permittee shall request approval for an increased or new use of a chemical additive at least 60 days, or as soon as possible, before the proposed increased or new use. This written request shall include at least the following information for the proposed additive: a. The process for which the additive will be used; b. Material Safety Data Sheet (MSDS) which shall include aquatic toxicity, human health, and environmental fate information for the proposed additive. The aquatic toxicity information shall include at minimum the results of: a) a 48-hour LC50 or EC50 acute study for a North American freshwater planktonic crustacean (either Ceriodaphnia or Daphnia sp.) and b) a 96 -hour LC50 acute study for rainbow trout, bluegill or fathead minnow or another North American freshwater aquatic species other than a planktonic crustacean; c. A complete product use and instruction label; d. The commercial and chemical names and Chemical Abstract Survey (CAS) number for all ingredients in the additive (If the MSDS does not include information on chemical composition, including percentages for each ingredient totaling to 100%, the Permittee shall contact the supplier to have this information provided); and e. The proposed method of application, application frequency, concentration, and daily average and maximum rates of use. (Minn. R. 7001.0170) permit Modified: October 16, 2414 Elk River WWTF Page 34 rermit Expires: dune 30, 2018 Chapter 1.0. Total Facility Requirements 1, General Requirements Pernik #. MN0020788 1.47 Upon review of the information submitted regarding the proposed chemical additive, the MPGA may require additional information be submitted for consideration. This permit may be modified to restrict the use or discharge of a chemical additive and include additional influent and effluent monitoring requirements. Approval for the use of an additive shall not justify the exceedance of any effluent limitation nor shall it be used as a defense against pollutant levels in .the discharge causing or contributing to the violation of a water quality standard. 1.48 MPCA Initiated Permit Modification, Suspension, or Revocation. The MPCA may modify or revoke and reissue this permit pursuant to Minn. R. 7001 A 170. The MPCA may revoke without reissuance this permit pursuant to Minn. R. 7001.0180. 1.49 TMDL Impacts. Facilities that discharge to an impaired surface water, watershed or drainage basin may be required to comply with additional permits or permit requirements, including additional restriction or relaxation of limits and monitoring as authorized by the CWA 303(d)(4)(A) and 40 CFR 122,44.1.2.i., necessary to ensure consistency with the assumptions and requirements of any applicable US EPA approved wasteload allocations resulting from Total Maximum Daily Load (TMDL) studies. 1.50 Permit Transfer. The permit is not transferable to any person without the express written approval of the Agency after compliance with the requirements of Minn. R. 7001.0190. A person to whom the permit has been transferred shall comply with, the conditions of the permit. (Minn. R., 7001.0150, subp. 3, item N) 1.51 Facility Closure. The Permittee is responsible for closure and post -closure care of the facility. The Permittee shall notify the MPGA of a significant reduction or cessation of the activities described in this permit at least 180 days before the reduction or cessation. The MPCA may require the Permittee to provide to the MPCA a facility Closure Plan for approval. .Facility closure that could result in a potential long-term water quality concern, such as the ongoing discharge of wastewater to surface or ground water, may require a permit modification or reissuance. The MPCA may require the Permittee to establish and maintain financial assurance to ensure performance of certain obligations under this permit, including closure, post -closure care and remedial action at the facility. If financial assurance is required, the amount and type of financial assurance, and proposed modifications to previously MPCA-approved financial assurance, shall be approved by the MPCA. (Minn. Stat. Sec. 116.07, subd. 4) Permit Modified: October 16, 2014 Elk River WWTF Page 35 Permit Expires: June 30, 2018 Chapter 10. Total Facility Requirements 1. General Requirements Permit #: MN0020788 1.52 Permit Reissuance. If the Permittee desires to continue permit coverage beyond the date of permit expiration, the Permittee shall submit an application for reissuance at least 180 days before permit expiration. If the Permittee does not intend to continue the activities authorized by this permit after the expiration date of this permit, the Permittee shall notify the WCA in writing at least 180 days before permit expiration. If the Permittee has submitted a timely application for permit reissuance, the Permittee may continue to conduct the activities authorized by this permit, in compliance with the requirements of this permit, until the MPCA takes final action on the application, unless the MPCA determines any of the following (Minn. R. 7001.0044 and 7001.0160): a. The Permittee is not in substantial compliance with the requirements of this permit, or with a stipulation agreement or compliance schedule designed to bring the Permittee into compliance with this permit; b. The MPCA, as a result of an action or failure to act by the Permittee, has been unable to take final action on the application on or before the expiration date of the permit; c. The Permittee has submitted an application with major deficiencies or has failed to properly supplement the application in a timely manner after being informed of deficiencies. Chapter 11. Industrial stormwater-- No Exposure Exclusion 1. Conditional Exclusion for No Exposure 1.1 No exposure means all industrial materials and activities are protected by a storm resistant shelter to prevent exposure to rain, snow, snow melt, and/or runoff. Industrial activities or materials include, but are not limited to, material handling equipment or activities, industrial machinery, raw materials, intermediate products, by-products, final products, or waste products. 1.2 The conditional exclusion for No Exposure is available on a facility -wide basis in accordance with Minn. R. 7090.3060, subp. 5(E). 1.3 The no exposure certification is non-transferrable in accordance with Minn. R. 70903060, subp. 5(D). In the event that the facility operator changes, then the new operator must submit written notification of the change to the MPGA, Attn:. WQ Submittal Center, 520 Lafayette Road North, St Paul, Minnesota 55155-4194. 1.4 The MPCA retains the authority to require the facility operator to apply for a permit modification to this permit for stormwater coverage or to apply for coverage under the Industrial Stormwater General Permit (MNR050000), even when an industrial operator certifies No Exposure, if the MPCA has determined that the discharge is contributing to the violation of, or interfering with the attainment or maintenance of water quality standards, including designated uses. 1.5 Any facility that has previously obtained a conditional exclusion for No Exposure shall recertify for the exclusion no later than five years from the effective date of the most recent No Exposure certificate issued to the facility by the Agency. 1.6 The No Exposure exclusion is conditional. The facility must maintain a condition of No Exposure at the facility in order for the No Exposure exclusion to remain applicable. In the event of any change or circumstance that causes exposure of industrial activities or materials to stormwater, the facility must comply with the stormwater requirements of this chapter. 1.7 Based on the information submitted with the permit application, the Agency has determined the Permittee meets the exclusion criteria for "No Exposure" in accordance with Minnesota Rules Chapter 7090.3060. Appendix C Waste Management Elk River Landfill Fact Sheet WASTE MANAGEMENT Elk River Landfill Elk River Landfill is a regional facility that provides safe and convenient disposal services for communities, businesses and industries serving Sherburne County and surrounding areas. Waste Management's approximately 300 disposal facilities employ the latest advances in landfill technology. This facility is engineered with environmental protection systems that meet or exceed rigorous government regulations and are subject to highly regulated monitoring and reporting requirements. Systems include engineered liners and covers, leachate collection and removal, and landfill gas collection and control. Containment Design Elk River Landfill utilizes a double -layer, 2 -foot clay and a 60 mil geosynthetic liner system to ensure that waste and wastewater (leachate) are contained and isolated from soil and groundwater. Leachate Collection & Treatment Leachate is discharged to the local Publicly Owned Treatment Works (POTW). Groundwater Monitoring Groundwater is monitored at 31 wells, which are upgradient and downgradient of the waste disposal footprint. The groundwater monitoring network is sampled and analyzed in accordance with the procedures of the facility's groundwater sampling and analysis plan. Landfill Gas Management Elk River Landfill collects and manages landfill gas through an extensive flare system with 76 wells, which reduces emissions and minimizes odor. The Landfill -Gas -to -Energy plant produces about 3.2 MW of energy, and powers approximately 2,400 homes in Elk River, Minnesota. Security Site security is ensured by controlled, limited access to the facility through the gatehouse as well as perimeter fencing and natural barriers. During non -business hours the gate is locked and monitored by 24-hour electronic surveillance. W9a WASTE MANAGEMENT® ELK RIVER LANDFILL 22460 U.S. 169 Elk River, MN 55330 800 963 4776 HOURS OF OPERATION 7:00 am - 4:30 pm Monday - Friday Closed Saturday & Sunday YEAR OPENED 1972 PROJECTED LIFE REMAINING 49 years FACILITY ACREAGE 510.5 acres PERMITTED FOOTPRINT 191.4 acres REMAINING PERMITTED CAPACITY 15M cubic yards APPROXIMATE TONS PROCESSED ANNUALLY 300,000 tons OWNERSHIP Elk River Landfill, Inc. is owned by Waste Management of Minnesota, Inc. PERMIT TYPE & PERMIT # Waste Facility Permit No. SW -74 REGULATORY AGENCIES City of Elk River; Minnesota Pollution Control Agency (MPCA); Occupational Safety and Health Administration (OSHA); Sherbourne County EMPLOYEES 11 THINK GREEN: WASTE MANAGEMENT Acceptable Material Asbestos — Friable/Non Friable Construction & Demolition (C&D) Debris Drum Management — Solids Industrial & Special Wastes Unacceptable Material Fluorescent Bulbs Gas Refrigerators Hazardous Waste Municipal Solid Waste (MSW) Tires Yard Waste Liquids Propane Tanks Recycling Services Provided Appliances Metal Batteries Tires Electronic White Goods Risk Mitigation Waste Management provides the highest level of services, backed with state-of-the-art site design and management systems, to help minimize risks and reduce liabilities. Community Partnerships and Involvement Elk River Landfill is proud to be an active supporter of community events and programs that make Sherburne County and its surrounding cities a strong and healthy place to live, work and play. W WASTE MANAGEMENT® CONTACT Technical Support TSC Midwest 800 963 4776 TSCMidwest@wm.com COMMUNITY RELATIONS Julie Ketchum 952 460 8606 jketchu@wm.com COMMUNITIES SERVED Sherburne County and surrounding cities ©2014 Waste Management, Inc. THINK GREEN: Appendix D Waste Management Elk River Landfill Leachate Data (2011-2014) v z - rn rn rn rn 'am rn rn rn rn- - - W N Z O N CO CO 00 N CD N 00 V Il- N O N 00 N 'T LO d' 00 O CO E E O V 00000 V I- In 00 O V O _ O O 00 O O N CO m N o co o I- o In 0 _ 0 In O 0 CO O CO O CO O I- O N CA In O d' M W) =M r r 0 O 0 O 0 O 0 O 0 O 0 0 O O O O O O O O 0 0 ('9 O D O O 0 O 0 O O 0 O O 0 O 0 O 0 O 0 O O O O N C) Q V V V V V V V V V V V V V V V V V V V V V V V V V V O O V O W J C E E E E E' E�� E E E = E E E E E E E E E E E mC\l m E O(0 N Z CO r- co CN CO V Cb V r- r- r- O E COCN V LO NT NT 00 0 I E t r Q O V O V O O In O co o O o O O O o O O O CO m N o 00 o o In 0 O In o O CO O CO O CO O r -NT o N W r 0 O CO m rn M O _ CO .00000 0 0 0 0 0 0 0 O 00 j (j O O C O V 0 V O 0 O 0 O 0 0 O 0 0 O 0 O 0 O 0 O 0 0 O 0 O 0 O 000VV V M O V V V V V V V V V V V V V V V V V V V V V W 7�0 J NT WN N Z CO CO CO 00 N (4 N 00 � V N r O E N 00 N � NT LO V V 00 O CO E CN V 00000 f F- l0 Co O V O O r- OO r- O O to(000O CO N 00 � l0 l0 O 0 OOOo CO CO I- � l0 O(M O mrnOO 00 O O O 000 O O O O O 0 00 OOOO O OO O N O V V V V V V V V VVO V V V V V V V V OOO V V V W J Z Q r rn E rn E rn E rn E rn E rn E rn E rn E rn E rn E rn E rn E 0)- E _-- m 0) E 0) E 0) E 0) E 0) E 0) E 0) E 0) E 0) E 0)-_ OI E O _ OIC - 01 tm W N Z N 00 N m N 00 m W N V (n Il N N O 0) N r.- I� m CO m V CO 00 N V O m O m O m I- N l0 I- N m N m V m l0 mm Cb N CV O le Q N O O O O O O O O O O O O O O n O O O O O O O O O O O O O 0 O O� O! 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O t L Q C 0) 7 7 t C O C O A C C N U L U� 0 w L 0) '() Q O N E � L O >, L O L O �. 9 Q O >+ L Q O O O- 0) CO 0) E O 0) >, C (6 O 0) N O `p t E 0 Ul O O V O t L 0 t 0 L Ul V O L O O •` .� O •` .� O •` .� c 0 Q 0 d' j, N Q E O M O Q O N Q L t L t C () j, L U L C O U N 0) 0) H U_ _Q U_ U_ X~ U_ E 0 0 L O E 0 0 0 c N L t (0 (6 0) C C C d' 0 00 0 O (O 0 0 0 0 L L N .`J O .`J C C L N N N N .0 j, j, j, N N N_ M d' N vI" d' d' CO U U Z m U U Z U U C Z H H H H X X X .tA m N4 N N N N N N c,4 N V d' V Q Q Q In O V N O O N O) O d N v QT COJ COJ COJ COJ COJ COJ �C —C —C COJ COJ COJ COJ COJ COJ COJ COJ CD Cm COJ Cam COJ Cam COJ COJ COJ T C C C C C C C C E E E C C C E E E C C E E C C C C E E C C E E cm E N M Z r- N 00 V N (M N r N N N m M O O N 0 ll N M m O N O V 00 ONO (Lo E 0 0 0 Q = T 0000000 .000000 O O O O 0000.000 O O O O O O O O 00000 O O O O O O O O O O O O T O O 00 O O T O O O O O O O O O O O O O O O 000 O O O 00000 O O O T O 0 0 QV V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V W J Y- - Z - rnrnrnrnrnrnrnrnrnrnrn- rnrn- rnrnrnrnrnrnrn - 0)0)0)0)0)0)=0)0)0)0)0)0)= rnrnrn Q T E E E E E E E E E E E E E E E E E E E E E E E m E E E E E E OIE E E O O O O ON O C14 0 N Z r- N N V N (m M V(D N N co V N N M N M N N d;' M M( N 0 0 _ r 000000000000 . 0 0 0 0 0 0 0 0 0 0 0 M 0 O O O O O 0 O 0 O 0 O 0 O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 O 0 0 0 U CO 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Q V V V V V V V V V V O V V V V V V V V V V V V V V V V V V V W Tv� J NT Y- - - - - - - - - - - - - - - - - - - - - - - - - - - - Z - rnrnrnrnrnrn- rn- rnrn��rn- WWWWW a= rnrnrnrnrnrn- rnrnrn Q T E E E E E E E E E E E E E E E E E E E E E E t E E E E E Ea E E E N Q> Z `3,00000000 r- N� V N (m 0 a0 N N N O O O W cq N O N l� V M N O 0 O M M m NT ll 0 0 0 Q 000000000000000 0 0 0 0 0 0 0 O O O 0 0 0 0 0 0 0 Cf 00000" _ r 0 0 0 0 0 0 0 O O O O O 0 O 0 O 0 O 0 O 0 O 0 O 0 O 0 O 0 O 0 O 0 O 0 O 0 O 0 O 0 O 0 O00 0 O 0 QV V V V V V V V V V V V V V V V V V V V V O V V V V V V 0 W J Z Q T �arnarnrnrnrnrn- O) rn rnrnrn0)az& rnrnrnrn- rnrnrnrnrnrn- 0) E E E E E E E E E E E E E E E E E E E E E E E Ea E E E E E E tm E LU N Z 00(n00 (nam N (n(nrnmao N0)cpcomrN Ern mrrnv ErnLOLOLOn Q N r 000000 N V V N (n 00 000 N N 0 00 000 . N 0 N In 0 V 0 m 00 N O 00000040050 m m m (n O O O O 0 = . 0 0 0 0 0 0 0 0 0 O 0 0 0 0 O 0 0 0 0 0 0 0 0 0 a 0 0 O o O N 0 0 0 0 0 0 V O O O O O O O O O O O O O O O O O O O O O O O O QV V V V V V V V V V V V V V V V V V V V V V V V V V V V V v W V V J 0 0 U N y O 0 O Z z z Z z z z z z z z z z z z z z z z z z z Z z z z z z z z z z z z z J ~o E H (n O) G. E l4 E p (D O) a� C m E Z m c °� � E r m o N °� E 'E m E m U E C O) O L N O L T x 6-C �- N p O (D (6 O) (6 a� C O) p 0) p- >, p- (0 A Q (a " O N U O) C i C 0 �' L N (6 N m N o p- t p C � L t L C (0 O) (6 X Q C t N 7 >, U M O) - C 2 Q Q C O O U O E Q 0 O) .� (6 (� -6-0 0) � t L � N O) N C � p- p- >, � _ �' ... O) O O O N �_ C O N (6 N C O Ul O Ul O Ul L � O) C N C =p O O O O O U U O) Q 0 N D, L +. N 7 U p C (6 C N - U L U t U 0 0 C� 0 L t O) 0. O O O -E- U 0 N O N C U-2-2 � � N C N C N C N C N C N C N to N Ul N Ul �, t N E C C O O N X N X N X O% p- O- p z z Z C O) C O) O 2 m O O N m O) m O) m O) m O) m O) m m m m j m JE� U o 0 0 0 0��__=: 7 7 N N N a O N (6 z . z z z z O) a L a L a A a L U L U LO o v M o O N p) O d v Z rn E rn E rn E rn E rn E rn E rn E rn E rn E rn E E �_ E tm �� E - a� = -- rn rn - rn= E rn - rn rn E �_ E �_ E a� -_ rn a� am ~ O LU N N In I� M r- M O N� O O O 0 O O a� O E E E H M Z Q 0 00000000000 0 0 0 0 0 0 0 0 0 0 ON O O O o N r 00 N r O t�0 O O M 0 O A r M< le 0 0 O 0 O 0 Qt p tq m O 0 O 0 to = r U r 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 O r p O r O co r N O D D O M r O 0 O 0 0 � M O O p N O r p N A n t19 ty N a VVVVVVVVVVV V V V V VV V W J Y Z rn E rn E rn E rn E rn E rn E rn E rn E rn E rn E E - rn a -_- rn rn _ - rn- - rn= -- rn 0) - rn a --- Q 00vrnr-oo0000o E E E a�E= O a�E E tm E E= °1p E E a�= °1 E E E rnE E rnrnrn LU N Z r 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0LO 0 O N N to In O < O r N le ll� 0 D 0 M O V O O 0 N 0) N O O O Q = 0 0000000000. 0 0 0 0 0 0 0 0 0 0 O f� O O le O t0 M 0 O 0 t0 tl') p O N co r O O r O M r r (D to N O Q0 0 0 0 0 0 0 0 0 0 0 O R O O r O N O O p r OV O V O M 0 0 � 0 m O t j LU V V V V V V V V V V V V V V V V V J NT Y- Z E - E - - - - - E - E - E - _ - - _ _ E E E E E E E °1 E E- E- °' °1 E a� rn= E °' E rn rn= tm E E a� E E E CD N � M 0 o M � LO � 0 LO r O a) E O E E E o E E E 0 E O m E E Z Q> Q o O O 0 0 0 0 0 0 0 0 0 0 0 O 0 O o O O N M T Lo O O n O o N' N M 0 O r r a0 N M O N N O O CD CD _ r 0 O 0 O O O O O O O O O O O 0 O 0 O 0 O 0 O O 0 M R O 0 N r O O M N Oa O r O N O ty r O O O O N O O N O O O O M p O tD M to tD N QO O O O O V V O V V O O V V V O M LU V V V V V J Z E E E E E E E E E E E - rn- E - rnE_ - rn- rn - rn Ec - - - a�- _ E - tmc= - rn E - rn- E am - rn E_ - tmamam - - CD N 00000000000 O E E O °1E E E E- E E -- EE E °' E E m EE Z Q 00000000000 00000000000 N M w lL O w O t70 M.4 M M m o to M M o� O O o N r 0 N 0 f.- N = N 00000000000 0 0 0 0 0 0 0 0 0 0 O p tD O O p r O O 1.- r O O N O M r o O O O O M M O 0 0� 0 O 0 0tn a Qt7 w V 0 V 0 V 0 V 0 V 0 V 0 V 0 V 0 V 0 V 0 V O V V O V V V J O O O > U UJ 666 O N Z Z Z Z Z Z Z Z Z Z Z Ha O H6 H6 H70 H0 H6 H6 H76 H6 H76 H6 H76 Ha H76 Ha O H O H O H H0 O ZZ Z C E H o G. E lC W E a� w Z to m E 2 a) a) (6 a o � o rn U CO -� w E a��i ami o X m m m `o `o E E C7 0 U c w w w c c -J U m o a c o .� E .� 2 E� E N aD ami .� E E c a� a _ °o °o °o a = Q a X E a� o a .2 o Q > m a-�i � .o aa) `o C? o0wwwww N C C C C C m, a) a) p N a) O a7 (6 L O t0 a) ��za-cf) o V O a) O L Y t L o,==� Q�QmmC')C') CoP C) C) LO o v 'j-0 N N p) O d z =2 /� f�\k LU k CL z ae : gLLo@ E le ` k q L z =( 0) LUQ /kEE a� gLL©- )a E2�k <LU -i - z =2 §% _SEE ■ M CD a ƒ ©Lo \ CL R/$ §a /2k$ a § §LU - ■ z L 0)3 7 LU\ �� z : w = jLL = o_n »§00 k& ~ ) ) & 0)} @ z z z z Eƒ®j ƒ 2 E 2 / ) (D \ C ± / o U) \ \ o = g] }£\\ Table 13 2012 Leachate Data Elk River Landfill Elk River, Minnesota Pagel of 4 2/20/2014 C:\Users\tjohnso8\Documents\MIDWEST\Minnesota\Elk River\2014\POTW\Table 13 -Quarterly Leachate -Annual 2012 Location Date Sample Type LEACHATE TANK 4 2/15/2012 N LEACHATE TANK 4 517/2012 N LEACHATE TANK 4 819/2012 N LEACHATE TANK 4 1118/2012 N Fraction VOCs 1,1,1 -Trichloroethane NA <0.016mg/I <0.016mg/I <0.016mg/I <0.016mg/I 1,1,2,2 -Tetrachloroethane NA < 0.0042 mg/I < 0.0042 mg/I < 0.0042 mg/I < 0.0042 mg/I 1,1,2 -Trichloroethane NA < 0.0046 mg/I < 0.0046 mg/I < 0.0046 mg/I < 0.0046 mg/I 1,1-Dichloroethane NA < 0.0076 mg/I < 0.0076 mg/I < 0.0076 mg/I < 0.0076 mg/I 1,1-Dichloroethylene NA < 0.0058 mg/I < 0.0058 mg/I < 0.0058 mg/I < 0.0058 mg/I 1,2,4-Trichlorobenzene NA < 0.0082 mg/I < 0.0082 mg/I < 0.0082 mg/I < 0.0082 mg/I 1,2 -Dichlorobenzene NA < 0.016 mg/I < 0.016 mg/I < 0.016 mg/I < 0.016 mg/I 1,2-Dichloroethane NA < 0.0042 mg/I < 0.0042 mg/I < 0.0042 mg/I < 0.0042 mg/I 1,2-Dichloroethylene, trans NA < 0.018 mg/I < 0.018 mg/I < 0.018 mg/I < 0.018 mg/I 1,2-Dichloropropane NA < 0.014 mg/I < 0.014 mg/I < 0.014 mg/I < 0.014 mg/I 1,3-Dichloro-1-propene, cis NA < 0.0072 mg/I < 0.0072 mg/I < 0.0072 mg/I < 0.0072 mg/I 1,3-Dichloro-1-propene, trans NA < 0.0074 mg/I < 0.0074 mg/I < 0.0074 mg/I < 0.0074 mg/I 1,4 -Dichlorobenzene NA < 0.017 mg/I < 0.017 mg/I < 0.017 mg/I < 0.017 mg/I 2-Chloroethyl vinyl ether NA < 0.019 mg/I < 0.019 mg/I < 0.019 mg/I < 0.019 mg/I Acetone NA 0.98 mg/I 1.3 mg/I 0.35 mg/I 1.2 mg/I Acrolein NA < 0.36 mg/I < 0.36 mg/I < 0.36 mg/I < 0.36 mg/I Acrylonitrile NA < 0.02 mg/I < 0.02 mg/I < 0.02 mg/I < 0.02 mg/I Benzene NA < 0.0082 mg/I < 0.0082 mg/I < 0.0082 mg/I < 0.0082 mg/I Bis(chloromethyl)ether NA < 0.05 mg/I TIC < 0.05 mg/I TIC < 0.05 mg/I TIC < 0.05 mg/I TIC Bromod ichloromethane NA < 0.0078 mg/I < 0.0078 mg/I < 0.0078 mg/I < 0.0078 mg/I Bromoform NA < 0.0052 mg/I < 0.0052 mg/I < 0.0052 mg/I < 0.0052 mg/I Bromomethane NA < 0.014 mg/I < 0.014 mg/I < 0.014 mg/I < 0.014 mg/I Carbon tetrachloride NA < 0.0054 mg/I < 0.0054 mg/I < 0.0054 mg/I < 0.0054 mg/I Chlorobenzene NA < 0.015 mg/I < 0.015 mg/I < 0.015 mg/I < 0.015 mg/I Chlorodibromomethane NA < 0.0064 mg/I < 0.0064 mg/I < 0.0064 mg/I < 0.0064 mg/I Chloroethane NA < 0.0064 ` mg/I < 0.0064 mg/I < 0.0064 mg/I < 0.0064 mg/I Chloroform NA < 0.0068 mg/I < 0.0068 mg/I < 0.0068 mg/I < 0.0068 mg/I Chloromethane NA < 0.0070 mg/I < 0.0070 mg/I < 0.0070 mg/I < 0.0070 mg/I Ethyl benzene NA 0.03 mg/I 0.024 mg/I 0.025 mg/I 0.031 mg/I Ethyl ether NA 0.021 mg/I 0.016 mg/I 0.015 mg/I 0.02 mg/I Hexachlorobutadiene NA < 0.0056 mg/I < 0.0056 mg/I < 0.0056 mg/I < 0.0056 mg/I Isopropyl alcohol NA 2.7 mg/I 0.43 mg/l < 0.36 mg/I 1.2 mg/I Methyl ethyl ketone NA 1.2 mg/I 0.93 mg/I 0.35 mg/I 1.2 mg/I Methyl isobutyl ketone NA 0.051 mg/I < 0.042 mg/I < 0.042 mg/I < 0.042 mg/I Methylene chloride NA < 0.0088 mg/I < 0.0088 mg/I < 0.0088 mg/I 0.018 mg/I Naphthalene NA 0.013 mg/I < 0.0086 mg/I 0.0088 mg/I 0.014 mg/I Tetrachloroethylene NA < 0.0072 mg/I < 0.0072 mg/I < 0.0072 mg/I < 0.0072 mg/I Tetrahydrofuran NA 2.1 mg/I 0.83 mg/I 1.3 mg/I 1.7 mg/I Toluene NA 0.04 mg/I 0.027 mg/I 0.03 mg/I 0.042 mg/I Total Toxic Organics NA 7.5 mg/I 3.7 mg/I 2.2 mg/I 5.6 mg/I Trichloroethylene NA < 0.0092 mg/I < 0.0092 mg/I < 0.0092 mg/I < 0.0092 mg/I Vinyl chloride NA < 0.018 mg/I < 0.018 mg/I < 0.018 mg/I < 0.018 mg/I Xylene, m & p NA 0.07 mg/I 0.054 mg/I 0.051 mg/I 0.066 mg/I Xylene, o NA 0.03 mg/I 0.024 mg/I 0.023 mg/I 0.031 mg/I Xylene, total NA 0.1 mg/I 0.078 mg/I 0.074 mg/I 0.097 mg/I Pagel of 4 2/20/2014 C:\Users\tjohnso8\Documents\MIDWEST\Minnesota\Elk River\2014\POTW\Table 13 -Quarterly Leachate -Annual 2012 Table 13 2012 Leachate Data Elk River Landfill Elk River, Minnesota Page 2 of 4 2/20/2014 C:\Users\tjohnso8\Documents\MIDWEST\Minnesota\Elk River\2014\POTW\Table 13 -Quarterly Leachate -Annual 2012 Location Date Sample Type LEACHATE TANK 4 2/15/2012 N LEACHATE TANK 4 517/2012 N LEACHATE TANK 4 819/2012 N LEACHATE TANK 4 1118/2012 N Fraction SVOCs 1,2,4-Trichlorobenzene NA < 0.0061 mg/I < 0.011 mg/I < 0.0093 mg/I < 0.0094 mg/I 1,2 -Dichlorobenzene NA < 0.0019 mg/I < 0.0033 mg/I < 0.0027 mg/I < 0.0028 mg/I 1,2-Diphenylhydrazine NA < 0.0010 mg/I < 0.0014 mg/I < 0.0012 mg/I < 0.0012 mg/I 1,3 -Dichlorobenzene NA < 0.0019 mg/I < 0.0019 mg/I < 0.0019 mg/I < 0.0019 mg/I 1,4 -Dichlorobenzene NA < 0.0044 mg/I < 0.0044 mg/I < 0.0044 mg/I < 0.0044 mg/I 2,2-oxybis (1-chloropropane) NA < 0.0057 mg/I < 0.0057 mg/I < 0.0057 mg/I < 0.0057 mg/I 2,4,6 -Trichlorophenol NA < 0.0029 mg/I < 0.0053 mg/I < 0.0044 mg/I < 0.0045 mg/I 2,4-Dichlorophenol NA < 0.0038 mg/I < 0.0067 mg/I < 0.0057 mg/I < 0.0057 mg/I 2,4 -Dimethylphenol NA < 0.0027 mg/I < 0.0030 mg/I < 0.0027 mg/I < 0.0027 mg/I 2,4-Dinitrophenol NA < 0.042 mg/I < 0.042 mg/I < 0.042 mg/I < 0.042 mg/I 2,4-Dinitrotoluene NA < 0.0057 mg/I < 0.0059 mg/I < 0.0057 mg/I < 0.0057 mg/I 2,6-Dinitrotoluene NA 0.043 mg/I < 0.016 mg/I < 0.014 mg/I < 0.014 mg/I 2-Chloronaphthalene NA < 0.0019 mg/I < 0.0019 mg/I < 0.0019 mg/I < 0.0019 mg/I 2 -Chlorophenol NA < 0.0033 mg/I < 0.0035 mg/I < 0.0033 mg/I < 0.0033 mg/I 2-Methyl-4,6-dinitrophenol NA < 0.024 mg/I < 0.024 mg/I < 0.024 mg/I < 0.024 mg/I 2-Nitrophenol NA < 0.0036 mg/I < 0.0036 mg/I < 0.0036 mg/I < 0.0036 mg/I 4-Bromophenyl phenyl ether NA < 0.0019 mg/I < 0.0026 mg/I < 0.0022 mg/I < 0.0022 mg/I 4-Chloro-3-methylphenol NA < 0.0070 mg/I < 0.012 mg/I < 0.011 mg/I < 0.011 mg/I 4-Chlorophenyl phenyl ether NA < 0.0026 mg/I < 0.0047 mg/I < 0.0039 mg/I < 0.0040 mg/I 4-Nitrophenol NA < 0.017 mg/I < 0.03 mg/I < 0.025 " mg/I < 0.026 mg/I Acenaphthene NA < 0.0019 mg/I < 0.0019 mg/I < 0.0019 mg/I < 0.0019 mg/I Acenaphthylene NA < 0.0035 mg/I < 0.0035 mg/I < 0.0035 mg/I < 0.0035 mg/I Anthracene NA < 0.0019 mg/I < 0.0019 mg/I < 0.0019 mg/I < 0.0019 mg/I Benz(a)anthracene NA < 0.0078 mg/I < 0.0078 mg/I < 0.0078 mg/I < 0.0078 mg/I Benzidine NA < 0.044 mg/I < 0.057 mg/I < 0.048 mg/I < 0.048 mg/I Benzo(a)pyrene NA < 0.0025 mg/I < 0.0025 mg/I < 0.0025 mg/I < 0.0025 mg/I Be nzo(b)fluoranthene NA < 0.0048 mg/I < 0.0048 mg/I < 0.0048 mg/I < 0.0048 mg/I Be nzo(g,h,i)perylene NA < 0.0041 mg/I < 0.0041 mg/I < 0.0041 mg/I < 0.0041 mg/I Be nzo(k)fluoranthene NA < 0.0025 mg/I < 0.0025 mg/I < 0.0025 mg/I < 0.0025 mg/I Bis(2-chloroethoxy)methane NA < 0.0053 mg/I < 0.0053 mg/I < 0.0053 mg/I < 0.0053 mg/I Bis(2-chloroethyl)ether NA < 0.014 mg/I < 0.025 mg/I < 0.021 mg/I < 0.021 mg/I Bis(2-ethylhexyl)phthalate NA 0.045 mg/l < 0.019 mg/I < 0.016 mg/I < 0.016 mg/I Butyl benzyl phthalate NA < 0.016 mg/I < 0.029 mg/I < 0.025 mg/I < 0.025 mg/I Chrysene NA < 0.0025 mg/I < 0.0025 mg/I < 0.0025 mg/I < 0.0025 mg/I Dibenz(a,h)anthrace ne NA < 0.0025 mg/I < 0.0025 mg/I < 0.0025 mg/I < 0.0025 mg/I Diethyl phthalate NA 0.0042 mg/I < 0.0039 mg/I < 0.0033 mg/I < 0.0033 mg/I Dimethyl phthalate NA < 0.0021 mg/I < 0.0037 mg/I < 0.0031 mg/I < 0.0032 mg/I Di -n -butyl phthalate NA < 0.012 mg/I < 0.021 mg/I < 0.018 mg/I < 0.018 mg/I Di-n-octyl phthalate NA < 0.056 mg/I < 0.1 mg/I < 0.084 mg/I < 0.085 mg/I Fluoranthene NA < 0.0022 mg/I < 0.0024 mg/I < 0.0022 mg/I < 0.0022 mg/I Fluorene NA < 0.0019 mg/I < 0.0019 mg/I < 0.0019 mg/I < 0.0019 mg/I Hexachlorobenzene NA < 0.0034 mg/I < 0.0062 mg/I < 0.0052 mg/I < 0.0052 mg/I Hexachlorobutadiene NA < 0.0077 mg/I < 0.014 mg/I < 0.012 mg/I < 0.012 mg/I Hexachlorocyclopentadiene NA < 0.0057 mg/I < 0.01 mg/I < 0.0086 mg/I < 0.0086 mg/I Indeno(1,2,3-cd)pyrene NA < 0.0037 mg/I < 0.0042 mg/I < 0.0037 mg/I < 0.0037 mg/I Isophorone NA < 0.0022 mg/I < 0.0035 mg/I < 0.0030 mg/I < 0.0030 mg/I Naphthalene NA 0.013 mg/I < 0.0018 mg/I < 0.0016 mg/I < 0.0016 mg/I Nitrobenzene NA < 0.0019 mg/I < 0.0025 mg/I < 0.0021 mg/I < 0.0021 mg/I N-Nitrosodimethylamine NA < 0.012 mg/I < 0.022 mg/I < 0.018 mg/I < 0.018 mg/I N-Nitrosodi-n-propylamine NA < 0.0033 mg/I < 0.0052 mg/I < 0.0043 mg/I < 0.0044 mg/I N-Nitrosodiphenylamine NA < 0.0050 mg/I < 0.0089 mg/I < 0.0075 mg/I < 0.0075 mg/I Page 2 of 4 2/20/2014 C:\Users\tjohnso8\Documents\MIDWEST\Minnesota\Elk River\2014\POTW\Table 13 -Quarterly Leachate -Annual 2012 Table 13 2012 Leachate Data Elk River Landfill Elk River, Minnesota Page 3 of 4 2/20/2014 C:\Users\tjohnso8\Documents\MIDWEST\Minnesota\Elk River\2014\POTW\Table 13 -Quarterly Leachate -Annual 2012 Location Date Sample Type LEACHATE TANK 4 2/15/2012 N LEACHATE TANK 4 517/2012 N LEACHATE TANK 4 819/2012 N LEACHATE TANK 4 1118/2012 N Fraction Pentachlorophenol NA < 0.0052 mg/I < 0.0093 mg/I < 0.0078 mg/l < 0.0079 mg/I Phenanthrene NA < 0.0054 mg/I < 0.0054 mg/I < 0.0054 mg/l < 0.0054 mg/I Phenol NA 0.07 mg/I 0.029 mg/I 0.021 mg/I 0.03 mg/I Pyrene NA < 0.0019 mg/I < 0.0019 mg/I < 0.0019 mg/I < 0.0019 mg/I b -BHC NA < 0.00013 mg/I < 0.00047 mg/I < 0.0012 mg/I < 0.000050 mg/l Chlordane, alpha & gamma NA < 0.00050 mg/I < 0.00055 mg/I < 0.0014 mg/I < 0.00050 mg/I d -BHC NA < 0.000054 mg/I < 0.00019 mg/I < 0.00049 mg/I < 0.000050 mg/l Dieldrin NA < 0.000053 mg/I < 0.00019 mg/I < 0.00048 mg/I < 0.000050 mg/l Endosulfan I NA < 0.000060 mg/I < 0.00021 mg/I < 0.00053 mg/I < 0.000050 mg/l Endosulfan 11 NA < 0.000065 mg/I < 0.00023 mg/I < 0.00058 mg/I < 0.000050 mg/l Endosulfan Sulfate NA < 0.000085 mg/I < 0.00030 mg/I < 0.00076 mg/I < 0.000050 mg/l Endrin NA < 0.000075 mg/I < 0.00026 mg/I < 0.00067 mg/I < 0.000050 mg/l Endrin Aldehyde NA < 0.000089 mg/I < 0.00031 mg/I < 0.00079 mg/I < 0.000050 mg/l g -BHC (Lindane) NA < 0.000050 mg/I < 0.00011 mg/I < 0.00029 mg/I < 0.000050 mg/l Heptachlor NA < 0.000050 mg/I < 0.00016 mg/I < 0.00041 mg/I < 0.000050 mg/l Heptachlor epoxide NA < 0.000050 mg/I < 0.00010 mg/I < 0.00026 mg/I < 0.000050 mg/l Toxaphene NA < 0.00065 mg/I < 0.0023 mg/I < 0.0058 mg/I < 0.00050 mg/I Page 3 of 4 2/20/2014 C:\Users\tjohnso8\Documents\MIDWEST\Minnesota\Elk River\2014\POTW\Table 13 -Quarterly Leachate -Annual 2012 Table 13 2012 Leachate Data Elk River Landfill Elk River, Minnesota Page 4 of 4 2/20/2014 C:\Users\tjohnso8\Documents\MIDWEST\Minnesota\Elk River\2014\POTW\Table 13 -Quarterly Leachate -Annual 2012 Location Date Sample Type LEACHATE TANK 4 2/15/2012 N LEACHATE TANK 4 517/2012 N LEACHATE TANK 4 819/2012 N LEACHATE TANK 4 1118/2012 N Metals Fraction Antimony Total < 0.0200 mg/I < 0.0200 mg/I < 0.0200 mg/I < 0.0200 mg/I Arsenic Total 0.0943 mg/I 0.0590 mg/I 0.0849 mg/I 0.118 mg/I Beryllium Total < 0.0050 mg/I < 0.0050 mg/I < 0.0050 mg/I < 0.0050 mg/I Boron Total 17.6 B7 mg/I 11.2 B mg/I 15.5 B mg/I 16.9 mg/I Cadmium Total 0.0019 mg/I < 0.0010 mg/I 0.0018 mg/I < 0.0010 mg/I Calcium Total 117 mg/I 107 mg/I 127 B mg/I 98.5 mg/I Chromium Total 0.182 mg/I 0.119 mg/I 0.167 mg/I 0.198 mg/I Copper Total 0.0089 mg/I 0.0073 mg/I 0.0068 mg/I 0.0065 mg/I Lead Total < 0.0050 mg/I 0.0057 mg/I < 0.0050 mg/I < 0.0050 mg/I Magnesium Total 144 mg/I 81.7 mg/I 111 mg/I 98.5 mg/I Mercury Total < 0.00040 mg/I < 0.00040 mg/I < 0.00040 mg/I < 0.00040 mg/I Molybdenum Total 0.0238 mg/I 0.0120 mg/I 0.0160 mg/I 0.0244 mg/I Nickel Total 0.462 mg/I 0.247 mg/I 0.385 mg/I 0.406 mg/I Potassium Total 596 mg/I 330 mg/I 478 mg/I 529 mg/I Selenium Total < 0.0100 mg/I < 0.0100 mg/I < 0.0100 mg/I < 0.0100 mg/I Silver Total < 0.0040 mg/I < 0.0040 mg/I < 0.0040 mg/I < 0.0040 mg/I Sodium Total 2210 mg/I 1320 mg/I 1830 mg/I 2160 mg/I Thallium Total < 0.0200 mg/I < 0.0200 mg/I < 0.0200 mg/I < 0.0200 mg/I Zinc Total 0.154 mg/I 0.0427 mg/I 0.0710 mg/I 0.168 mg/I General Parameters Alkalinity, total NA 6840 B mg/I 4520 B mg/I 6480 mg/I 5660 B mg/I Chemical Oxygen Demand NA 2480 mg/I 1470 mg/I 2170 mg/I 2710 B mg/I Chloride NA 2590 mg/I 1370 mg/I 2120 mg/I 2370 mg/I Flash point NA > 176.0 deg F > 176.0 deg F > 176.0 deg F > 176.0 deg F pH NA 7.68 HF pH units 7.53 HF pH units 7.70 HF pH units 7.82 HF pH units Phosphorus, total NA 7.9 mg/I -- -- Solids, total suspended NA 4.4 mg/I 28.4 mg/I 503 mg/I 27.6 mg/I Sulfate I NA 1 13.5 mg/I 1 40.4 mg/I 1 27.7 mg/I 1 8.14 mg/I Page 4 of 4 2/20/2014 C:\Users\tjohnso8\Documents\MIDWEST\Minnesota\Elk River\2014\POTW\Table 13 -Quarterly Leachate -Annual 2012 Page 1 2/20/2( Table 12 2013 Leachate Data Elk River Landfill Elk River, Minnesota Location Date Sample Type LEACHATE TANK 4 2/13/2013 N LEACHATE TANK 4 5/07/2013 N LEACHATE TANK 4 8/08/2013 N LEACHATE TANK 4 11/11/2013 N Parameter Effective Date Exceedance Key General Parameters Alkalinity, total, as CaCO3 7470 mg/I 5250 mg/I 9170 mg/I 8760 mg/I Chemical Oxygen Demand 3250 mg/I 4990 mg/I 8950 mg/I 7080 mg/I Chloride 2450 mg/I 1540 mg/I 1940 mg/I 1940 F1 mg/I Flash point > 176.0 deg F > 176.0 deg F > 176.0 deg F > 176.0 deg F pH 7.61 HF pH units 7.15 HF pH units 7.14 HF pH units 7.12 HF pH units Solids, total suspended 7.6 mg/I 168 mg/I 1900 mg/I 368 mg/I Sulfate, as SO4 66.3 mg/I 214 mg/I 112 mg/I 60.5 F1 mg/I Metals Antimony < 0.0200 mg/I < 0.0200 mg/I 0.0253 mg/I 0.0206 mg/I Arsenic 0.0982 mg/I 0.0652 mg/I 0.193 mg/I 0.0788 mg/I Beryllium < 0.0050 mg/I < 0.0050 mg/I < 0.0050 mg/I < 0.0050 mg/I Boron 17.3 mg/I 13.2 mg/I 13.2 B mg/I 15.3 ^B mg/I Cadmium 0.0011 mg/I 0.0020 mg/I 0.0066 mg/I < 0.0010 mg/I Calcium 173 mg/I 441 mg/I 663 B mg/I 525 mg/I Chromium 0.204 mg/I 0.156 mg/I 0.276 mg/I 0.172 mg/I Copper 0.0641 mg/I 0.0435 mg/I 0.137 mg/I 0.0307 mg/I Lead < 0.0050 mg/I 0.0095 mg/I 0.0604 mg/I 0.0196 mg/I Magnesium 122 mg/I 154 mg/I 168 mg/I 150 mg/I Mercury < 0.00040 mg/I < 0.00040 mg/I < 0.00040 mg/I < 0.00040 mg/I Molybdenum 0.0186 mg/I 0.0193 mg/I 0.108 mg/I 0.0161 mg/I Nickel 0.545 mg/I 0.36 mg/I 1.01 mg/I 0.368 mg/I Potassium 567 mg/I 381 mg/I 478 mg/I 505 mg/I Selenium < 0.0100 mg/I 0.0191 mg/I 0.0235 mg/I 0.0126 mg/I Silver < 0.0040 mg/I < 0.0040 mg/I 0.0040 mg/I < 0.0040 mg/I Sodium 2340 mg/I 1490 mg/I 1730 mg/I 1790 mg/I Thallium < 0.0200 mg/I < 0.0200 mg/I < 0.0205 mg/I < 0.0200 mg/I Zinc 0.134 mg/I 1.9 mg/I 6.64 mg/I 1.34 mg/I SVOCs 1,2,4-Trichlorobenzene < 0.0094 mg/I < 0.019 mg/I < 0.01 mg/I < 0.021 mg/I 1,2 -Dichlorobenzene < 0.0028 mg/I < 0.0055 mg/I < 0.0031 mg/I < 0.0063 mg/I 1,2-Diphenylhydrazine < 0.0012 mg/I < 0.0024 mg/I < 0.0013 mg/I < 0.0027 mg/I 1,3 -Dichlorobenzene < 0.0019 mg/I < 0.0026 mg/I < 0.0019 mg/I < 0.0030 mg/I 1,4 -Dichlorobenzene < 0.0044 mg/I < 0.0044 mg/I < 0.0044 mg/I < 0.0044 mg/I 2,2-oxybis (1 -chloro propane) < 0.0057 mg/I < 0.0057 mg/I < 0.0057 mg/I < 0.0057 mg/I 2,4,6 -Trichlorophenol < 0.0045 mg/I < 0.0089 mg/I < 0.0049 mg/I < 0.01 mg/I 2,4-Dichlorophenol < 0.0057 mg/I < 0.011 mg/I < 0.0063 mg/I < 0.013 mg/I 2,4 -Dimethylphenol < 0.0027 mg/I < 0.0051 mg/I < 0.0028 mg/I < 0.0059 mg/I 2,4-Dinitrophenol < 0.042 mg/I < 0.042 mg/I < 0.042 mg/I < 0.042 mg/I 2,4-Dinitrotoluene < 0.0057 mg/I < 0.01 mg/I < 0.0057 mg/I < 0.011 mg/I 2,6-Dinitrotoluene < 0.014 mg/I < 0.027 mg/I < 0.015 mg/I < 0.031 mg/I 2-Chloronaphthalene < 0.0019 mg/I < 0.0026 mg/I < 0.0019 mg/I < 0.0029 mg/I 2 -Chlorophenol < 0.0033 mg/I < 0.0060 mg/I < 0.0033 mg/I < 0.0068 mg/I 2-Methyl-4,6-dinitrophenol < 0.024 mg/I < 0.029 mg/I < 0.024 mg/I < 0.033 mg/I 2-Nitrophenol < 0.0036 mg/I < 0.0055 mg/I < 0.0036 mg/I < 0.0063 mg/I 4-Bromophenyl phenyl ether < 0.0022 mg/I < 0.0044 mg/I < 0.0024 mg/I < 0.0050 mg/I 4-Chloro-3-methylphenol < 0.011 mg/I < 0.021 mg/I < 0.012 mg/I < 0.024 mg/I 4-Chlorophenyl phenyl ether < 0.0040 mg/I < 0.0079 mg/I < 0.0044 mg/I < 0.0091 mg/I 4-Nitrophenol < 0.026 mg/I < 0.051 mg/I < 0.028 mg/I < 0.059 mg/I Acenaphthene < 0.0019 mg/I < 0.0023 mg/I < 0.0019 mg/I < 0.0026 mg/I Acenaphthylene < 0.0035 mg/I < 0.0035 mg/I < 0.0035 mg/I < 0.0035 mg/I Anthracene < 0.0019 mg/I < 0.0020 mg/I < 0.0019 mg/I < 0.0023 mg/I Benz(a)anthracene < 0.0078 mg/I < 0.0078 mg/I < 0.0078 mg/I < 0.0078 mg/I Benzidine < 0.048 mg/I < 0.096 mg/I < 0.053 mg/I < 0.11 mg/I Benzo(a)pyrene < 0.0025 mg/I < 0.0025 mg/I < 0.0025 mg/I < 0.0025 mg/I Benzo(b)fluoranthene < 0.0048 mg/I < 0.0048 mg/I < 0.0048 mg/I < 0.0048 mg/I Benzo(g,h,i)perylene < 0.0041 mg/I < 0.0041 mg/I < 0.0041 mg/I < 0.0044 mg/I nzo(k)fluoranthene < 0.0025 mg/I < 0.0025 mg/I < 0.0025 mg/I < 0.0025 mg/I C:\Users\tjohnso8\Documents\MIDWEST\Minnesota\Elk River\2014\POTW\2013 Leachate Data Page 2 2/20/2( Table 12 2013 Leachate Data Elk River Landfill Elk River, Minnesota Location Date Sample Type LEACHATE TANK 4 2/13/2013 N LEACHATE TANK 4 5/07/2013 N LEACHATE TANK 4 8/08/2013 N LEACHATE TANK 4 11/11/2013 N Parameter Effective Date Exceedance Key Bis(2-chloroethoxy)methane < 0.0053 mg/I < 0.0053 mg/I < 0.0053 mg/I < 0.0053 mg/I Bis(2-chloroethyl)ether < 0.021 mg/I < 0.042 mg/I < 0.023 mg/I < 0.048 mg/I Bis(2-ethylhexyl)phthalate < 0.016 mg/I < 0.033 mg/I 0.022 mg/I < 0.037 mg/I Butyl benzyl phthalate < 0.025 mg/I < 0.049 mg/I < 0.027 mg/I < 0.056 mg/I Chrysene < 0.0025 mg/I < 0.0025 mg/I < 0.0025 mg/I < 0.0025 mg/I Dibe nz(a, h)a nth race ne < 0.0025 mg/I < 0.0025 mg/I < 0.0025 mg/I < 0.0025 mg/I Diethyl phthalate < 0.0033 mg/I 0.035 mg/I 0.043 mg/I 0.031 mg/I Dimethyl phthalate < 0.0032 mg/I < 0.0063 mg/I < 0.0035 mg/I < 0.0072 mg/I Di -n -butyl phthalate < 0.018 mg/I < 0.036 mg/I < 0.02 mg/I < 0.041 mg/I Di-n-octyl phthalate < 0.085 mg/I < 0.17 mg/I < 0.094 mg/I < 0.19 mg/I Fluoranthene < 0.0022 mg/I < 0.0041 mg/I < 0.0023 mg/I < 0.0047 mg/I Fluorene < 0.0019 mg/I < 0.0019 mg/I < 0.0019 mg/I < 0.0019 mg/I Hexachlorobenzene < 0.0052 mg/I < 0.01 mg/I < 0.0058 mg/I < 0.012 mg/I Hexachlorobutadiene < 0.012 mg/I < 0.023 mg/I < 0.013 mg/I < 0.027 mg/I Hexachlorocyclopentadiene < 0.0086 mg/I < 0.017 mg/I < 0.0096 mg/I < 0.02 mg/I Indeno(1,2,3-cd)pyrene < 0.0037 mg/I < 0.0071 mg/I < 0.0039 mg/I < 0.0081 mg/I Isophorone < 0.0030 mg/I < 0.0060 mg/I < 0.0033 mg/I < 0.0068 mg/I Naphthalene < 0.0016 mg/I < 0.0030 mg/I < 0.0017 mg/I < 0.0035 mg/I Nitrobenzene < 0.0021 mg/I < 0.0042 mg/I < 0.0023 mg/I < 0.0048 mg/I N-Nitrosodimethyla mine < 0.018 mg/I < 0.037 mg/I < 0.02 mg/I < 0.042 mg/I N-Nitrosodi-n-propylamine < 0.0044 mg/I < 0.0088 mg/I < 0.0049 mg/I < 0.01 mg/I N-Nitrosodiphenyla mine < 0.0075 mg/I < 0.015 mg/I < 0.0084 mg/I < 0.017 mg/I Pentachlorophenol < 0.0079 mg/I < 0.016 mg/I < 0.0087 mg/I < 0.018 mg/I Phenanthrene < 0.0054 mg/I < 0.0054 mg/I < 0.0054 mg/I < 0.0054 mg/I Phenol 0.051 mg/I 0.14 mg/I 0.14 mg/I 0.22 mg/I Pyrene < 0.0019 mg/I < 0.0019 mg/I < 0.0019 mg/I < 0.0019 mg/I VOCs 1,1,1 -Trichloroethane < 0.016 mg/I < 0.016 mg/I < 0.016 mg/I < 0.016 H mg/I 1,1,2,2 -Tetrachloroethane < 0.0042 mg/I < 0.0042 mg/I < 0.0042 mg/I < 0.0042 H mg/I 1,1,2 -Trichloroethane < 0.0046 mg/I < 0.0046 mg/I < 0.0046 mg/I < 0.0046 H mg/I 1,1-Dichloroethane < 0.0076 mg/I < 0.0076 mg/I < 0.0076 mg/I < 0.0076 H mg/I 1,1-Dichloroethylene < 0.0058 mg/I < 0.0058 mg/I < 0.0058 mg/I < 0.0058 H mg/I 1,2,4-Trichlorobenzene < 0.0082 mg/I < 0.0082 mg/I < 0.0082 mg/I < 0.0082 H mg/I 1,2 -Dichlorobenzene < 0.016 mg/I < 0.016 mg/I < 0.016 mg/I < 0.016 H mg/I 1,2-Dichloroethane < 0.0042 mg/I < 0.0042 mg/I < 0.0042 mg/I 0.0049 H mg/I 1,2-Dichloroethylene, trans < 0.018 mg/I < 0.018 mg/I < 0.018 mg/I < 0.018 H mg/I 1,2-Dichloropropane < 0.014 mg/I < 0.014 mg/I < 0.014 mg/I < 0.014 H mg/I 1,3-Dichloro-l-propene, cis < 0.0072 mg/I < 0.0072 mg/I < 0.0072 mg/I < 0.0072 H mg/I 1,3-Dichloro-l-propene, trans < 0.0074 mg/I < 0.0074 mg/I < 0.0074 mg/I < 0.0074 H mg/I 1,4 -Dichlorobenzene < 0.017 mg/I < 0.017 mg/I < 0.017 mg/I < 0.017 H mg/I 2-Chloroethyl vinyl ether < 0.019 mg/I < 0.019 mg/I < 0.019 mg/I < 0.019 H mg/I Acetone 1.5 mg/I 2.1 mg/I 4.4 mg/I 1.4 H mg/I Acrolein < 0.36 mg/I < 0.36 mg/I < 0.36 mg/I < 0.36 H mg/I Acrylonitrile < 0.02 mg/I < 0.02 mg/I < 0.02 mg/I < 0.02 H mg/I Benzene < 0.0082 mg/I < 0.0082 mg/I < 0.0082 mg/I < 0.0082 H mg/I Bromod ich lo ro methane < 0.0078 mg/I < 0.0078 mg/I < 0.0078 mg/I < 0.0078 H mg/I Bromoform < 0.0052 mg/I < 0.0052 mg/I < 0.0052 mg/I < 0.0052 H mg/I Bromomethane < 0.014 mg/I < 0.014 mg/I < 0.014 mg/I < 0.014 H mg/I Carbon tetrachloride < 0.0054 mg/I < 0.0054 mg/I < 0.0054 mg/I < 0.0054 H mg/I Chlorobenzene < 0.015 mg/I < 0.015 mg/I < 0.015 mg/I < 0.015 H mg/I Chlorodibromomethane < 0.0064 mg/I < 0.0064 mg/I < 0.0064 mg/I < 0.0064 H mg/I Chloroethane < 0.0064 mg/I < 0.0064 mg/I < 0.0064 mg/I < 0.0064 H mg/I Chloroform < 0.0068 mg/I < 0.0068 mg/I < 0.0068 mg/I < 0.0068 H mg/I Chloromethane < 0.0070 mg/I < 0.0070 mg/I < 0.0070 mg/I < 0.0070 H mg/I Ethyl benzene 0.038 mg/I 0.032 mg/I 0.021 mg/I 0.034 H mg/I Ethyl ether 0.038 mg/I 0.064 mg/I 0.084 mg/I 0.054 H mg/I Hexachlorobutadiene fq < 0.0056 mg/I < 0.0056 mg/I < 0.0056 mg/I < 0.0056 H mg/I sopropyl alcohol 1.5 mg/I 9 mg/I 9.8 mg/I 10 H mg/I C:\Users\tjohnso8\Documents\MIDWEST\Minnesota\Elk River\2014\POTW\2013 Leachate Data Table 12 2013 Leachate Data Elk River Landfill Elk River, Minnesota Location Date Sample Type LEACHATE TANK 4 2/13/2013 N LEACHATE TANK 4 5/07/2013 N LEACHATE TANK 4 8/08/2013 N LEACHATE TANK 4 11/11/2013 N Parameter Effective Date Exceedance Key Methyl ethyl ketone 1.6 mg/I 2.9 mg/I 7.1 ` mg/I 2.2 H mg/I Methyl isobutyl ketone 0.045 mg/I 0.063 mg/I 0.14 mg/I 0.13 H mg/I Methylene chloride 0.067 mg/I 0.087 mg/I 0.087 mg/I 0.046 H mg/I Naphthalene 0.015 mg/I 0.011 mg/I < 0.0086 mg/I < 0.0086 H mg/I Tetrachloroethylene < 0.0072 mg/I < 0.0072 mg/I < 0.0072 mg/I < 0.0072 H mg/I Tetrahydrofuran 1.6 mg/I 1.3 mg/I 1.6 mg/I 1.5 H mg/I Toluene 0.081 mg/I 0.076 mg/I 0.063 mg/I 0.092 H mg/I Trichloroethylene < 0.0092 mg/I < 0.0092 mg/I < 0.0092 mg/I < 0.0092 H mg/I Vinyl chloride < 0.018 mg/I < 0.018 mg/I < 0.018 mg/I < 0.018 H mg/I Xylene, m & p 0.075 mg/I 0.063 mg/I 0.043 mg/I 0.068 H mg/I Xylene, o 0.033 mg/I 0.029 mg/I 0.018 mg/I 0.03 H mg/I Xylene, total 0.11 mg/I 0.092 mg/I 0.061 mg/I 0.098 H mg/1 Bis(chloromethyl)ether < 0.05 mg/I TIC < 0.05 mg/I TIC < 0.05 mg/I TIC < 0.05 H mg/I TIC 4,4' -DDD < 0.000050 mg/I < 0.000091 mg/I < 0.000088 mg/I < 0.000096 mg/I 4,4' -DDE < 0.000050 mg/I < 0.00011 mg/I < 0.00011 mg/I < 0.00012 mg/I 4,4' -DDT < 0.000050 mg/I 0.00019 mg/I < 0.00011 mg/I < 0.00011 mg/I a -BHC < 0.000050 mg/I < 0.000065 mg/I < 0.000063 mg/I 0.00016 mg/I Aldrin < 0.000050 mg/I < 0.000065 mg/I < 0.000063 mg/I < 0.000069 mg/I b -BHC < 0.000050 mg/I < 0.00024 mg/I < 0.00024 mg/I < 0.00026 mg/I Chlordane, alpha & gamma < 0.00050 mg/I < 0.0029 mg/I < 0.0028 mg/I < 0.0030 mg/I d -BHC < 0.000050 mg/I < 0.000099 mg/I < 0.000096 mg/I < 0.00010 mg/I Dieldrin < 0.000050 mg/I 0.00014 mg/I < 0.000094 mg/I < 0.00010 mg/I Endosulfan I < 0.000050 mg/I < 0.00011 mg/I < 0.00011 mg/I < 0.00011 mg/I Endosulfan 11 < 0.000050 mg/I < 0.00012 mg/I < 0.00011 mg/I < 0.00013 mg/I Endosulfan Sulfate < 0.000050 mg/I < 0.00016 mg/I < 0.00015 mg/I < 0.00016 mg/I Endrin < 0.000050 mg/I < 0.00014 mg/I < 0.00013 mg/I < 0.00014 mg/I Endrin Aldehyde < 0.000050 mg/I < 0.00016 mg/I < 0.00016 mg/I < 0.00017 mg/I g -BHC (Lindane) < 0.000050 mg/I < 0.000059 mg/I < 0.000057 mg/I 0.000092 mg/I Heptachlor < 0.000050 mg/I < 0.000084 mg/I < 0.000081 mg/I < 0.000089 mg/I Heptachlor epoxide < 0.000050 mg/I < 0.000052 mg/I < 0.000051 mg/I < 0.000055 mg/I Toxaphene < 0.00050 mg/I < 0.0012 mg/I < 0.0011 mg/I < 0.0013 mg/I Page 3 of 3 2/20/2014 C:\Users\tjohnso8\Documents\MIDWEST\Minnesota\Elk River\2014\POTW\2013 Leachate Data RR = AW a+ M — O N R C N M J ^� VL d GO L J � p W N W O O Y U Q� o rn E rn E rn E rn E rn E rn E E rn E rn E rn E rn E rn E rn E rn E m E m E rn� E - rn E rn E rn E rn E rn E rn E rn E rn E rn- E �' m E - a� rn E rn E rn E - �' m E W N N d) lf') Lo (o W d) N 00 E M N E N M lf') V W (O (o I_ W I- E V E E E N N W E E E M F Q O N Z 0 0 0 0 0 N 0 O O V O co O O O V O V O 1 V O V O N O M O O M O O M O O O O O M O V W O M N N O N O O M 00 0 r N 0 2 O O O O O O O O O O O O O O M O O O 7 O O O O O O O O O O O O D O O O O M O U V VV V V V V V V V V V V V V V V O V V V V V V V V V V O V V V V O V Q V W J V Y Z F � W F O N N z Q N_ = Q w J V Z F mrnrnrnrnrnmc E E E E E E E mmrnrnmm E E E E E E -- rn� E rnrnmrnmrnrnrnrn�- E E E E E E E E E a� a� E -_- a� E E a� E W N ====== 2= E 2 2 2 2 E E 2 E 2= E========= E E 2 E E E E== E E E 2 F Z M N (o (o 00 N M W V N V O N W N V V V 00 O=_ (o =_ (o N = N Q \ _ O V 00000 V I- lf') W_ O 00 C, O O I� 00 O O 2 O N O N O co O 2 In IZ O lf') O _ O lf') O O (o O (o O (o O r O N N m (D m__ O w W O 0= O � r In 2 m O =.00000 U 00 O O O O O O O O O O O 00 O O O O � O O O O O O O O O O O O 0 O 0 O 0 O 0 O 0 O 0 O 0 O O 0 O 0 O 0 O N O O O O WV V V V V V V O V V V V V V V V V OV V V V V V V V V V V V V V J V Z Q mrnrnrnrnrnmrnmmrnrnmm E E E E E E E E E E E E E E -mrn�rnrnrnrnmrnrnrnrn�-m E E E- E E E E E E E E E rn rn E-- 00) - rn E E- rn- E W N = 2 2 2 2 2= 2== 2 2== m= = 2 E 2 2= 2= 2 2 2 2 E E 2 E E E E 2 2 E E E 2 F Z M N V (O V (O I- 00 Lo N 00 M N V 00 N I� V O E = N _ N W = 00 I- N m V V� m V (O V (O 00 (O O=_ r- M M U) lf') _ = =_ M (o 00 N r� _ = M < N 0) Q = �_ O 00000 00000 O O O O 00000 00 _ M O O O O Lo 00 O O O O O O 0000"o O O O O O O M w M O N 00—M O O N O O U O O O O O O O O O O O O O O O O O O O O O O O O O D D O N 0 0 0 0 0 O WV V V V V V V V V V V V V V V V v V V V V V V V V V V V V V J V rn rn Q v rn E E E rn E rn E rn E rn E m E rn E rn E rn E rn E rn E rn- E� m E m E rn� E- m E E m E m E OE rn E rn E rn E rn- E m m rn- E,, - O m m E rn- E, m m E Lu (\ C') AD N lf) N (o N'q (o 0) V y) V 00 E (o M (o m 0 W M M v v E E E E E E v_ E E E ao F Q 00 Z M O O O O O O m O w m O N O O O M O M O M M O M O O E O N O O o O O O O M Cl) I- Cl) O � (,.) 00 N O O w a) (o co O 2 _ N 0 O 0 O 0 0 0 0 0 O 0 0 0 0 0 0 0 0 0 0 0 0 6 0 0 0 0 0 0 0 0 6 (D In D O 0 0 0 0 UQ V V V V V V V V V V V V V V V V V V V V V V V O O V O V V O V V V V V W J o Ncu O co Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z J £ H D D R N co co N C N wNCNO cm (6 NO C N C C NUCNO CL N CO wNNNC tmiN- co co C coE N>=0� (6 0 N QN Y co �N>NU O O N E Et coO m mto O O O OOO O O O O O O O O O N UE NO E OLE ENNO O 0 OEO OO LO O c C O 'O 8 a) E 'O E xUU 0 OO N � U U � U U U U U O pO O O O Q O O N O O S pD O N V N O O O O O O O O a) CL ' U Q Qp Q m mU W= ON Co z- H H IH H O O N O O Z FCD rn rn a)c E _ E a) rn rn� E a)� rn- E rn� E rn rn � m rn rn m m W N )n E w E E E O E o E E E E£ o E E£ o E E o E E E E O E E E E o E N LO E F O Z Q N V O D M O R I� M lf') o O -tN O m N M 10 V �_ O O w O) N (D Mp O O w O O r O 0 m O N O O 00 O(o M O (D O V Q LL lf') (O O V p (O O l0 O V p Z r O O O O O O 00 M 0 0 0 (D p O N 0 N N p M 2 O) O V O O V Q V p V p G r p G G O G p G fh V n N V V V V V V V V V W r J V Y Z - F E a) a) a) w pE E E F N Z O O M Q V O G = p M r M U v Q w J 1-1 V z Q v E rnrnrn a)a)c rn— �rnrn— E a)c— E E a)E� ��� LL m -- rnrnrnrnrn F = E E E E E O£ E 0) E E E o f °' E a' O O E O rn E E E E a) E EEEEE W N Z ~ r 00 =_= N M N M 00 V V) O V V E V O w 00 E O 0 O N (D I� E O V O O O N M O p 0 O O Q LL E (D N M V V 00 M (O Q 0 N M O O O r N N M O V O O M O I� w 0 O = O O O O O = 00 U O 0 0 O O O . 0 O O 0 0 0 10 0 0 0 Dr) N N N N (D (rD O O O O O Q V O O O O O V O 0 0 V 0 V V V V V V V V W r J V ZLL z � a) a) a) m- E rn rn- E rn - rn - - rn m E rn- E rn - - m E rn- E rn rn- E6 - rn - rn - rn m - c rn m E m E m E m E W E E E E E E E E E o f E o E oo E E E E E E y O) F N Z 00 2 2 2 O O V) m (p (D l0 10 O Q E M Q (D M 10 00 O I- O O 0 0 (y O O M O O N NO - V (D )0 M LL 10 X 0 0 0 0 = Vo 0 0 0 p O O N O M 0 0 0 0 0 6 M O O M p 0 10 10 M N 00 O O O QV O V O V O O V V O V V V /( V V V V V W �CD �CD �Cl r J V F - �)rn - - rn- E a)E m- a)rn�olrnE - - - m rn- 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CO N U x N C Cc _0 E o N 0) U a _ c m -0 N -p cc CO J C E O t U N 2 O O N - rte+ -0� L NCf) V 0 E a) N J N N m CO > '� O 0 o � N a api v E a Q uj w o f i y a �° m o �� o Y N p mm O c `o c E m d 0 cc U) Y O a0 O E C C C p N 3 En LO N E O m- U) mo yo C O r-0> O NOCE E O c6C ,O cca NNUw O p— c0p N O>, U U C ca Or c- .0 o C- m3 � 0) L3 Y N U co NC Uwoa) O x O) U Nat N O — mN 2, N >, 'O � -0 UNU x a Nr m— m a) ca 0° m° E o o X� o E p-" o o o U m o m r U m a� o -p cc E U Mn U ~ >,Xo a) c m U o O" pmu) 0UN Ucn o> 2 0)O N E UOEn p (4 0 w U co a �E co LL J co U N N LL LL w U C1sm m ow iixx X< v�H N d O C O O LL i V ca R N U n a CU 'ca a cl N E -o o o zCL o - O N N O T H H 0 C N N 'O N a Q z co co N LzLLI O O !� C.0 O O N_ O) O c0 N a O Mn.S; E Q U w N O O Cl) N z Appendix E Excerpts from EPA Local Limits Development Guidance United States Office of Wastewater EPA 833 -R -04-002B Environmental Protection Management 4203 July 2004 Agency =. .EPA Local Limits Development Guidance Appendices APPENDICES Appendix A - List of Supplemental Documents ........................................... A-1 Appendix B - Industrial Categories with Pretreatment Standards ............................. B-1 Appendix C - Pollutants Regulated by Categorical Pretreatment Standards ..................... C-1 Appendix D - Clean Water Act Priority Pollutants and the Federal Water Quality Criteria ......... D-1 Appendix E - Federal Sewage Sludge Standards .......................................... E-1 Appendix F - Toxicity Characteristic Leachate Procedure Limitations ......................... F-1 Appendix G - Literature Inhibition Values ............................................... G-1 Appendix H - Closed -cup Flashpoints for Select Organic Compounds ......................... H-1 Appendix I - Discharge Screening Levels and Henry's Law Constants for Organic Compounds ..... I-1 Appendix J - OSHA, ACGIH and NIOSH Exposure Levels ................................. J-1 Appendix K - Landfill Leachate Loadings ............................................... K-1 Appendix L - Hauled Waste Loadings .................................................. L-1 Appendix M - Hazardous Waste Constituents - RCRA Appendix VIII ........................ M-1 Appendix N - Statistical Approach to Determining Sampling Frequency ....................... N-1 Appendix O - Minimizing Contamination in Samples ...................................... 0-1 Appendix P - Methods for Calculating Removal Efficiency ................................. P-1 Appendix Q - Methods for Handling Data Below Detection Level ............................ Q-1 Appendix R - Priority Pollutant Removal Efficiencies ...................................... R-1 Appendix S - Specific Gravity of Sludge ................................................ S-1 Appendix T - Sludge AHL Equations Using Flow (in metric units) ........................... T-1 Appendix U - POTW Configurations................................................... U-1 Appendix V - Domestic Pollutant Loadings .............................................. V-1 Appendix W - Best Management Practices Mini -Case Studies .............................. W-1 Appendix X - Region 1, Reassessment of Technically Based Industrial Discharge Limits Checklist .. X-1 APPENDIX F - TOXICITY CHARACTERISTIC LEACHATE PROCEDURE LIMITATIONS EPA Hazardous Waste No. Contaminant CAS No.' Regulatory Level (mg/L) D004 Arsenic 7440-38-2 5.0 D005 Barium 7440-39-3 100.0 D018 Benzene 71-43-2 0.5 D006 Cadmium 7440-43-9 1.0 D019 Carbon tetrachloride 56-23-5 0.5 D020 Chlordane 57-74-9 0.03 D021 Chlorobenzene 108-90-7 100.0 D022 Chloroform 67-66-3 6.0 D007 Chromium 7440-47-3 5.0 D024 o -Cresol 95-48-7 200.0 2 D024 m -Cresol 108-39-4 200.0 2 D025 p -Cresol 106-44-5 200.0 2 D026 Cresols 200.0 2 D016 2,4-D 94-75-7 10.0 D027 1,4 -Dichlorobenzene 106-46-7 7.5 D028 1,2-Dichloroethane 107-06-2 0.5 D029 1,1-Dichloroethylene 75-35-4 0.7 D030 2,4-Dinitrotoluene 121-14-2 0.13 3 D012 Endrin 72-20-8 0.02 D031 Heptachlor (and its epoxide) 76-44-8 0.008 D032 Hexachlorobenzene 118-74-1 0.13 3 D033 Hexachlorobutadiene 87-68-3 0.5 D034 Hexachloroethane 67-72-1 3.0 D008 Lead 7439-92-1 5.0 D013 Lindane 58-89-9 0.4 D009 Mercury 7439-97-6 0.2 D014 Methoxychlor 72-43-5 10.0 D035 Methyl ethyl ketone 78-93-3 200.0 D036 Nitrobenzene 98-95-3 2.0 D037 Pentachlorophenol 87-86-5 100.0 D038 Pyridine 110-86-1 5.0 3 D010 Selenium 7782-49-2 1.0 D011 Silver 7440-22-4 5.0 D039 Tetrachloroethylene 127-18-4 0.7 D015 Toxaphene 8001-35-2 0.5 D040 Trichloroethylene 79-01-6 0.5 F-1 EPA Hazardous Waste No. Contaminant CAS No.' Regulatory Level (mg/L) D041 2,4,5 -Trichlorophenol 95-95-4 400.0 D042 2,4,6 -Trichlorophenol 88-06-2 2.0 D017 2,4,5 -TP (Silvex) 93-72-1 1.0 D043 Vinyl chloride 75-01-4 0.2 1 Chemical Abstracts Service number. 2 If o-, m-, and p -Cresol concentrations cannot be differentiated, the total cresol (D026) concentration is used. The regulatory level of total cresol is 200 mg/L. 3 Quantitation limit is greater than the calculated regulatory level. The quantitation limit therefore becomes the regulatory level. Source: 40 CFR 261.24 F-2 APPENDIX G - LITERATURE INHIBITION VALUES Reported Range of Activated Sludge Pollutant Inhibition Threshold References* Levels, mg/L METALS/NONMETAL INORGANICS Ammonia 480 (4) Arsenic 0.1 (1), (2), (3) Cadmium 1 -10 (2),(3) Chromium (VI) 1 (2),(3) Chromium (III) 10-50 (2),(3) Chromium (Total) 1-100 (1) Copper 1 (2), (1), (3) Cyanide 0.1-5 5 (1), (2), (3) (1) Iodine 10 (4) Lead 1.0-5.0 10-100 (3) (1) Mercury 0.1 - 1 2.5 as Hg (II) (2), (3) (1) Nickel 1.0-2.5 5 (2),(3) (1) Sulfide 25-30 (4) Zinc 0.3-5 5-10 (3) (1) ORGANICS Anthracene 500 (1) Benzene 100-500 125-500 (3) (1) 2 -Chlorophenol 5 20-200 (2) (3) 1,2 Dichlorobenzene 5 (2) 1,3 Dichlorobenzene 5 (2) 1,4 Dichlorobenzene 5 (2) 2,4-Dichlorophenol 64 (3) 2,4 Dimethylphenol 40- 200 (3) 2,4 Dinitrotoluene 5 (2) 1,2-Diphenylhydrazine 5 (2) Ethylbenzene 200 (3) Hexachlorobenzene 5 (2) Naphthalene 500 500 500 (1) (2) (3) Nitrobenzene 30-500 500 500 (3) (1) (2) G-1 Pollutant Reported Range of Trickling Filter References* Inhibition Threshold Levels, mg/L Chromium (III) 3.5-67.6 (1) Cyanide 30 1 Pollutant Reported Range of Activated Sludge References* Pollutant Inhibition Threshold References* (2) Levels, mg/L 5.2 Pentachlorophenol 0.95 (2) (4) 50 (3) (1) 75-150 (1) Phenanthrene 500 (1) (2), (3) 500 (2) Phenol 50-200 (3) (2), (3) 200 (2) (2), (3) (1) 200 (1) Toluene 200 (3) 2,4,6 Trichlorophenol 50- 100 (1) Surfactants 100- 500 4 Pollutant Reported Range of Trickling Filter References* Inhibition Threshold Levels, mg/L Chromium (III) 3.5-67.6 (1) Cyanide 30 1 Pollutant Reported Range of Nitrification Inhibition Threshold Levels, mg/L References* METALS/NONMETAL INORGANICS Arsenic 1.5 (2) Cadmium 5.2 (1),(2) Chloride 180 (4) Chromium (VI) 1 - 10 [as (CrO4 )2-] (1) Chromium (T) 0.25-1.9 1 -100 (trickling filter) (1), (2), (3) (1) Copper 0.05-0.48 (2), (3) Cyanide 0.34-0.5 (2), (3) Lead 0.5 (2), (3) Nickel 0.25-0.5 5 (2), (3) (1) Zinc 0.08-0.5 (2),(3) ORGANICS Chloroform 10 (2) 2,4-Dichlorophenol 64 (3) 2,4-Dinitrophenol 150 (2) Phenol 4 (2) 4-10 3 G-2 Pollutant Reported Range of Anaerobic Digestion Inhibition Threshold Levels, mg/L References* METALS/NONMETAL INORGANICS Ammonia 1500-8000 (4) Arsenic 1.6 (1) Cadmium 20 (3) Chromium (III) 130 (3) Chromium (VI) 110 (3) Copper 40 (3) Cyanide 4-100 1 - 4 (1) (2),(3) Lead 340 (3) Nickel 10 136 (2),(3) (1) Silver 13 - 65** (3) Sulfate 500-1000 (4) Sulfide 50-100 (4) Zinc 400 (3) ORGANICS Acrylonitrile 5 5 (3) (2) Carbon Tetrachloride 2.9-159.4 10-20 2.0 (1) (3) (2) Chlorobenzene 0.96-3 0.96 (1) (2) Chloroform 1 5-16 10-16 (2) (1) (3) 1,2 -Dichlorobenzene 0.23-3.8 0.23 (1) (2) 1,4 -Dichlorobenzene 1.4-5.3 1.4 (1) (2) Methyl chloride 3.3-536.4 100 (1) (2 ) Pentachlorophenol 0.2 0.2- 1.8 (2) (1) Tetrachloroethylene 20 (2) Trichloroethylene 1 -20 20 20 (1) (2) (3) Trichlorofluoromethane - (2) * Total pollutant inhibition levels, unless otherwise indicated. * * Dissolved metal inhibition levels. (1) Jenkins, D.I., and Associates. 1984. Impact of Toxics on Treatment Literature Review. G-3 (2) Russell, L. L., C. B. Cain, and D.I. Jenkins. 1984. Impacts of Priority Pollutants on Publicly Owned Treated Works Processes: A Literature Review. 1984 Purdue Industrial Waste Conference. (3) Anthony, R. M., and L. H. Briemburst. 1981. Determining Maximum Influent Concentrations of Priority Pollutants for Treatment Plants. Journal Water Pollution Control Federation 53(10):1457-1468. (4) U.S. EPA. 1986, Working Document; Interferences at Publicly Owned Treatment Works. September 1986. Source: EPA's Guidance Manual on the Development and Implementation of Local Discharge Limitations Under the Pretreatment Program, December 1987, pp. 3-44 to 3-49. G-4 APPENDIX K - LANDFILL LEACHATE LOADINGS Landfill Leachate Monitoring Data* Pollutant Minimum Concentration Maximum (mg/L) Concentration (mg/L) Average Concentration (mg/L) INORGANICS Antimony 0.008 0.3 0.142 Arsenic 0.002 0.13 0.042 Barium <0.1 0.55 0.201 Cadmium < 0.001 1.25 0.03 Chromium (T) 0.007 12.1 0.633 Copper 0.007 10.87 0.395 Cyanide 0.04 0.05 0.029 Iron 1.5 4500 33.8 Lead 0.005 9.8 0.156 Manganese 0.63 73.2 13.224 Mercury < 0002 0.002 0.002 Nickel 0.003 12.09 0.55 Selenium < 002 0.02 0.01 Silver < 0.01 0.05 0.019 Zinc < 01 58 12.006 ORGANICS Acetone 2.8 2.8 2.8 Benzene < 0.002 0.031 0.025 Benzoic Acid 0.02 < 0.4 0.19 Chlorobenzene 0.011 0.011 0.011 Chloroethane < 0.001 < 0.1 0.021 p -chloro -m -Cresol 0.018 0.018 0.018 1,4 -Dichlorobenzene < 0.005 < 0.4 0.101 1,1-Dich loroethane < 0.001 0.052 0.002 1,2-Dichloroethane < 0.005 6.8 1.136 Ethylbenzene 0.017 0.54 0.171 Methyl Butyl Ketone 0.028 0.16 0.094 Methyl Ethyl Ketone 5.3 29 13.633 4-Methylphenol 0.065 0.065 0.065 Naphthalene < 0.01 <0.4 0.113 N-Nitrosodiphenylamine 0.011 0.011 0.011 Pentachlorophenol 0.016 0.016 0.016 Phenol 0.008 2.9 1.06 K-1 Pollutant Minimum Concentration (mg/L) Maximum Concentration (mg/L) Average Concentration (mg/L) Toluene 0.0082 1.6 0.735 Trichloroethene < 0.001 < 0.1 0.025 1,1,1 -Trichloroethane 0.011 0.022 0.019 2,4 -Dimethyl Phenol 0.005 < 0.4 0.107 Diethyl Phthalate 0.11 0.11 0.11 Dimethyl Phthalate 0.0049 0.0049 0.0049 Di -N -Butyl Phthalate 0.0044 0.0044 0.0044 Vinyl Acetate 0.25 0.25 0.25 Vinyl Chloride < 0.002 0.21 0.067 Number of detections/number of observations could not be determined from data provided. Source: U.S. EPA's Supplemental Manual on the Development and Implementation of Local Discharge Limitations Under the Pretreatment Programs, May 1991, pp. 1-30 and 1-31. "Pollutant levels reported below specified detection limit were considered in the data analysis and, for the purpose of statistical analysis, were considered to be equal to the detection limit." Most Common Landfill Leachates* Pollutant Concentration Range (parts per million) INORGANICS** Arsenic 0.0002 - 0.982 Barium 0.11 -5 Cadmium 0.007-0.15 Chloride 31 -5,475 Chromium (Total) 0.0005-1.9 Copper 0.03-2.8 Iron 0.22-2,280 Lead 0.005-1.6 Manganese 0.03-79 Nickel 0.02-2.2 Nitrate 0.01 -51 Sodium 12-2,574 Sulfate 8-1,400 ORGANICS*** 1,1-Dichloroethane 0.004-44 Trans-1,2-Dichloroethylene 0.002-4.8 Ethylbenzene 0.006-4.9 Methylene Chloride 0.002-220 Phenol 0.007-28.8 Toluene 0.006-18 K-2 Leachate data is compiled from a database of 70 MSWLFs [U.S. EPA 1988. Summary ofData on Municipal Solid Waste Landfill Leachate Characteristics -Criteria for Municipal Solid Waste Landfills (40 CFR Part 258) - Subtitle D of Resource Conservation and Recovery Act (Background Document)]. Washington, DC: Office of Solid Waste. ** Leachate data from 62 landfills. * * * Leachate data from 53 landfills. Source: U.S. EPA's National Pretreatment Program Report to Congress, July 1991, p. 3-81. Contaminant Concentration Ranges in Municipal Leachate Pollutant George Chain Metry/ Cameron Wisconsin Sobotka Parameter (1972) /DeWalle Cross (1978) Report Report 1977 1977 20 Sites 44 Sites CONVENTIONAL BOD 9-54,610 81 -33,360 2,200- 720,000 9-55,000 ND - 195,000 7-21,600 pH 3.7-8.5 3.7-8.5 3.7-8.5 3.7-8.5 5-8.9 5.4-8.0 TSS 6-2,685 10-700 13-26,500 2-140,900 28-2,835 NON -CONVENTIONAL Alkalinity 0-20,850 0-20,850 310-9,500 0-20,900 ND - 15,050 0-7,375 Bicarbonate 3,260 - 5,730 Chlorides 34-2,800 4.7-2,467 47-2,350 34-2,800 2-11,375 120-5,475 COD 0-89,520 40-89,520 800- 750,000 0-9,000 6.6-97,900 440-50,450 Fluorides 0-2.13 0-0.74 0.12-0.790 Hardness 0-22,800 0-22,800 35-8,700 0-22,800 52-225,000 0.8-9,380 NH, -Nitrogen 0-1,106 0-1,106 0.2-845 0-1,106 11.3-1,200 NO -Nitrogen 0-1,300 0.2 - 1,0.29 4.5-18 0-5,0.95 Organic Nitrogen 2.4-550 4.5-78.2 Ortho- Phosphorus 6.5-85 0.3-136 0-154 Sulfates 1 -1,826 1 -1,558 20-1,370 0-1,826 ND - 1,850 8-500 Sulfide 0-0.13 TOC 256-28,000 ND - 30,500 5-6,884 TDS 0-42,276 584-44,900 100-51,000 0-42,300 584-50,430 1,400- 16,120 Total -K- Nitrogen 0-1,416 2-3,320 47.3-938 Total Phosphorus 1 -154 0-130 ND - 234 Total Solids 0-59,200 1,900 - 25,873 METALS Aluminum 0-122 ND - 85 0.010-5.07 Arsenic 0-11.6 ND -70.2 0-0.08 Barium 0-5.4 ND - 12.5 0.01 - 10 Beryllium 0-0.3 ND -0.36 0.001 -0.01 K-3 Pollutant Parameter George (1972) Chain /DeWalle 1977 Metry/ Cross 1977 Cameron (1978) Wisconsin Report 20 Sites Sobotka Report 44 Sites Boron 0.3-73 0.867-13 Cadmium 0.03-17 0-0.19 ND-0.04 0-0.1 Calcium 5-4,080 60-7,200 240-2,570 5-4,000 200-2,500 95.5-2,100 Total Chromium 0-33.4 ND - 5.6 0.001 -1.0 Copper 0-9.9 0-9.9 0-10 ND-4.06 0.003-0.32 Cyanide 0-0.11 ND-6 0-4.0 Iron 0.2-5,500 0-2,820 0.12-1,700 0.2-5,500 ND - 1,500 0.22-1,400 Lead 0-0.5 <0.10-2.0 0-5.0 0-14.2 0.001-1.11 Magnesium 16.5-15,600 17-15,600 64-547 16.5 - 15,600 ND - 780 76-927 Manganese 0.06-1,400 0.09-125 13 0.06-1,400 ND - 31.1 0.03-43 Mercury 0-0.064 ND-0.01 0-0.02 Molybdenum 0-0.52 0.01 -1.43 Nickel 0.01 -0.8 ND - 7.5 0.01 -1.25 Potassium 2.8-3,770 28-3,770 28-3,800 2.8-3,770 ND - 2,800 30-1,375 Sodium 0-7,700 0-7,700 85-3,800 0-7,700 12-6,010 Titanium 0-5.0 <0.01 Vanadium 0 - 1.4 0.01 Zinc 0-1,000 0-370 0.03-135 0-1,000 ND - 731 0.01 - 67ji All concentrations in mg/L, except pH (standard units). ND = Non -detect Source: U.S. EPA's Technical Development Document for Proposed Effluent Limitations Guidelines and Standards for the Landfills Point Source Category, EPA 821-R-97-022, January 1998, Table 6-3. * Literature sources were: George, J. A., Sanitary Landfill -Gas and Leachate Control, the National Perspective, Office of Solid Waste Management Programs, U.S. EPA, 1972. Chian, E. S., and F. B. DeWalle, Evaluation ofLeachate Treatment, Volume I, Characterization of Leachate, EPA -600/2-77-186a. Metry, A. A., and F. L. Cross, Leachate Control and Treatment, Volume 7, Environmental Monograph Series, Technomic Publishing Co., Westport, CT, 1977. Cameron, R. D., The Effect of Solid Waste Landfill Leachates on Receiving Waters, Journal AWWA, March 1978. McGinley, Paul M., and Peter Met. Formation, Characteristics, Treatment and Disposal of Leachate from Municipal Solid Waste Landfills, Wisconsin Department of Natural Resources Special Report, August 1, 1984. Sobotka & Co., Inc., Case History Data Compiled and Reported to the U.S. Environmental Protection Agency Economic Analysis Branch, Office of Solid Waste, 1986. K-4 APPENDIX R - PRIORITY POLLUTANT REMOVAL EFFICIENCIES Priority Pollutant Removal Efficiencies (%) Through Primary Treatment* Priority Pollutant Median Number of POTWs with Removal Data** METAUNONMETAL INORGANICS Cadmium 15 6 of 40 Chromium 27 12 of 40 Copper 22 12 of 40 Cyanide 27 12 of 40 Lead 57 1 of 40 Mercury 10 8 of 40 Nickel 14 9 of 40 Silver 20 4 of 40 Zinc 27 12 of 40 ORGANICS Benzene 25 8 of 40 Chloroform 14 11 of 40 1,2-trans-Dichloroethylene 36 9 of 40 Ethylbenzene 13 12 of 40 Naphthalene 44 4 of 40 Phenol 8 11 of 40 Butyl benzyl phthalate 62 4 of 40 Di -n -butyl phthalate 36 3 of 40 Diethyl phthalate 56 1 of 40 Tetrachloroethylene 4 12 of 40 1,1,1 -Trichloroethane 40 10 of 40 Trichloroethylene 20 12 of 40 Pollutant removals between POTW influent and primary effluent. From Fate ofPriority Pollutants in Publicly Owned Treatment Works, Volume I(EPA 440/1-82/303), U.S. Environmental Protection Agency, Washington, D.C., September 1982, p. 61. * * Median removal efficiencies from a data base of removal efficiencies for 40 POTWs. Only POTWs with average influent concentrations exceeding three times each pollutant's detection limit were considered. Source: U.S. EPA's Guidance Manual on the Development and Implementation ofLocal Discharger Limitations Under the Pretreatment Program, December 1987, p. 3-55. R-1 Priority Pollutant Percent Removal Efficiencies (%) Through Activated Sludge Treatment* Priority Pollutant Range Second Decile Median I Eight I Decile Number of POTWs with Removal Data METALS/NONMETAL INORGANICS** Arsenic 11-78 31 45 53 5 of 26 Cadmium 25-99 33 67 91 19 of 26 Chromium 25-97 68 82 91 25 of 26 Copper 2-99 67 86 95 26 of 26 Cyanide 3-99 41 69 84 25 of 26 Lead 1-92 39 61 76 23 of 26 Mercury 1-95 50 60 79 20 of 26 Nickel 2-99 25 42 62 23 of 26 Selenium 25-89 33 50 67 4 of 26 Silver 17-95 50 75 88 24 of 26 Zinc 23-99 64 79 88 26 of 26 ORGANICS** Anthracene 29-99 44 67 91 5 of 26 Benzene 25-99 50 80 96 18 of 26 Chloroform 17-99 50 67 83 24 of 26 1,2-trans-Dichloroeth lene 17-99 50 67 91 17 of 26 Eth (benzene 25-99 67 86 97 25 of 26 Methylene chloride 2-99 36 62 77 26 of 26 Naphthalene 25-98 40 78 90 16 of 26 Phenanthrene 29-99 37 68 86 6 of 26 Phenol 3-99 75 90 98 19 of 26 Bis 2-eth (hex Iphthalate 17-99 47 72 87 25 of 26 Butyl benzyl phthalate 25-99 50 67 92 16 of 26 Di -n -but I phthalate 11-97 39 64 87 19 of 26 Diethyl phthalate 17-98 39 62 90 15 of 26 Pyrene 73-95 76 86 95 2 of 26 Tetrachloroethylene 15-99 50 80 93 26 of 26 Toluene 25-99 80 93 98 26 of 26 11111 -Trichloroethane 18-99 75 85 94 23 of 26 Trichloroethylene 20-99 75 89 98 25 of 26 Pollutant removals between POTW influent and secondary effluent (including secondary clarification). Based on a computer analysis of POTW removal efficiency data (derived from actual POTW influent and effluent sampling data) provided in U.S. EPA's Fate ofPriority Pollutants in Publicly Owned Treatment Works, Volume II (EPA 440/1-82/303), September 1982. * * For the purpose of deriving removal efficiencies, effluent levels reported as below detection were set equal to the reported detection limits. All secondary activated sludge treatment plants sampled as part of the study were considered. Source: U.S. EPA's Guidance Manual on the Development and Implementation ofLocal Discharger Limitations Under the Pretreatment Program, December 1987, p. 3-56. R-2 Priority Pollutant Removal Efficiencies (%) Through Trickling Filter Treatment* Priority Pollutant Range Second Decile Median Eighth Decile Number of POTWs with Removal Data METALS/NONMETAL INORGANICS** Cadmium 33-96 33 68 93 6 of 11 Chromium 5-92 34 55 71 9 of 11 Copper 12-97 32 61 89 9 of 11 Cyanide 7-88 33 59 79 8 of 11 Lead 4-84 25 55 70 6 of 11 Mercury 14-80 33 50 62 9 of 11 Nickel 7-72 11 29 57 9 of 11 Silver 11-93 38 66 86 8 of 11 Zinc 14-90 34 67 81 9 of 11 ORGANICS** Benzene 5-98 50 75 93 7 of 11 Chloroform 21-94 50 73 84 9 of 11 1,2-trans-Dichloroeth lene 14-99 50 50 96 7 of 11 Eth (benzene 45-97 50 80 91 10 of 11 Methylene chloride 5-98 28 70 85 10 of 11 Naphthalene 33-93 40 71 87 6 of 11 Phenol 50-99 75 84 96 8 of 11 Bis 2-eth (hex Iphthalate 4-98 21 58 81 10 of 11 Butyl benzyl phthalate 25-90 37 60 77 9 of 11 Di -n -but I phthalate 29-97 41 60 82 10 of 11 Diethyl phthalate 17-75 40 57 67 8 of 11 Tetrachloroethylene 26-99 53 80 93 10 of 11 Toluene 17-99 80 93 97 10 of 11 1,1,1 -Trichloroethane 23-99 75 89 97 10 of 11 Trichloroethylene 50-99 67 94 98 10 of 11 * Pollutant removals between POTW influent and secondary effluent (including secondary clarification). Based on a computer analysis of POTW removal efficiency data (derived from actual POTW influent and effluent sampling data) provided in U.S EPA's Fate ofPriority Pollutants in Publicly Owned Treatment Works, Volume II, (EPA 440/182/303), September 1982. ** For the purpose of deriving removal efficiencies, effluent levels reported as below detection were set equal to the reported detection limits. All secondary trickling filter plants sampled as part of the study were considered. Source: U.S. EPA's Guidance Manual on the Development and Implementation of Local Discharger Limitations Under the Pretreatment Program, December 1987, p. 3-57. R-3 Priority Pollutant Removal Efficiencies (%) Through Tertiary Treatment* Priority Pollutant Range Second Decile I Median Eighth I Decile Number of POTWs with Removal Data METALS/NONMETAL INORGANICS** Cadmium 33-81 50 50 73 3 of 4 Chromium 22-93 62 72 89 4 of 4 Copper 8-99 58 85 98 4 of 4 Cyanide 20-93 32 66 83 4 of 4 Lead 4-86 9 52 77 3 of 4 Mercury 33-79 43 67 75 4 of 4 Nickel 4-78 17 17 57 3 of 4 Silver 27-87 55 62 82 3 of 4 Zinc 1-90 50 78 88 4 of 4 ORGANICS** Benzene 5-67 40 50 54 2 of 4 Chloroform 16-75 32 53 64 3 of 4 1,2-trans-Dichloroethylene 50-96 50 83 93 2 of 4 Ethylbenzene 65-95 80 89 94 3 of 4 Methylene Chloride 11-96 31 57 78 4 of 4 Naphthalene 25-94 33 73 86 3 of 4 Phenol 33-98 80 88 96 4 of 4 Bis (2-ethylhexyl) phthalate 45-98 59 76 94 4 of 4 Butyl benzyl phthalate 25-94 50 63 85 4 of 4 Di -n -butyl phthalate 14-84 27 50 70 4 of 4 Diethyl phthalate 20-57 29 38 50 3 of 4 Tetrachloroethylene 67-98 80 91 97 4 of 4 Toluene 50-99 83 1 94 97 4 of 4 1,1,1 -Trichloroethane 50-98 79 94 97 4of4 Trichloroethylene 50-99 62 93 98 4 of 4 * Pollutant removals between POTW influent and tertiary effluent (including final clarification). Based on a computer analysis of POTW removal efficiency data (derived from actual POTW influent and effluent sampling data) provided in U.S. EPA's Fate ofPriority Pollutants in Publicly Owned Treatment Works, TVolumeII(EPA440/1-821303),September 1982. Tertiary treatment was taken to include POTWs with effluent microscreening, mixed media filtration, post aeration, and/or nitrification/denitrification. ** For the purpose of deriving removal efficiencies, effluent levels reported as below detection were set equal to the reported detection limits. All tertiary treatment plants sampled as part of the study were considered. Source: U.S. EPA's Guidance Manual on the Development and Implementation of Local Discharger Limitations Under the Pretreatment Program, December 1987, p. 3-58. Appendix F Preliminary Opinion of Estimated Project Cost PRELIMINARY OPINION OF ESTIMATED PROJECT COST WASTE MANAGEMENT -ELK RIVER LEACHATE STUDY CITY OF ELK RIVER MINNESOTA BMI PROJECT NO. T21.109643 ITEM APPROX. UNIT PRICE AMOUNT NO. ITEM DESCRIPTION QUANT. UNIT OPTION 1 A - CONNECTION AT EVANS ST NW & 197TH AVE NW (LINED FMN) 1 MOBILIZATION 1 LS $ 50,000.00 $ 50,000 2 TRAFFIC CONTROL 1 LS $ 5,000.00 $ 5,000 3 4 -INCH PE FORCEMAIN 21,220 LF $ 15.00 $ 318,300 4 12 -INCH PE CASING PIPE - DIRECTIONALLY DRILLED 21,220 LF $ 75.00 $ 1,591,500 5 LIFT STATION, CONTROLS & SITE WORK 1 LS $ 200,000.00 $ 200,000 6 AIR & VACUUM RELEASE MANHOLES 10 EA $ 9,000.00 $ 90,000 7 CORE & BOOT SAN MH 1 EA $ 3,500.00 $ 3,500 8 INSIDE MH DROP 5 LF $ 100.00 $ 500 9 4" GATE VALVE AND BOX 22 EA $ 1,200.00 $ 26,400 10 CONNECT TO WASTE MANAGEMENT 1 EA $ 5,000.00 $ 5,000 11 METER MANHOLE 1 EA $ 12,000.00 $ 12,000 12 EROSION CONTROL 1 LS $ 10,000.00 $ 10,000 13 TURF RESTORATION 1 LS $ 15,000.00 $ 15,000 CONSTRUCTION SUB -TOTAL: $ 2,327,200 CONTINGENCIES (20%) $ 465,440 CONSTRUCTION TOTAL: $ 2,792,640 ENG & ADMIN: $ 558,528 EST. PROJECT COST: $ 3,351,168 ITEM APPROX. UNIT PRICE AMOUNT NO. ITEM DESCRIPTION QUANT. UNIT OPTION 1 B - CONNECTION AT EVANS ST NW & 197TH AVE NW (NON -LINED FMN) 1 MOBILIZATION 1 LS $ 50,000.00 $ 50,000 2 TRAFFIC CONTROL 1 LS $ 5,000.00 $ 5,000 3 4 -INCH PE FORCEMAIN - DIRECTIONALLY DRILLED 20,995 LF $ 40.00 $ 839,800 4 4 -INCH PE FORCEMAIN 225 LF $ 20.00 $ 4,500 5 12 -INCH PE CASING PIPE (TH 169) - DIRECTIONALLY DRILLED 225 LF $ 100.00 $ 22,500 6 LIFT STATION, CONTROLS & SITE WORK 1 LS $ 200,000.00 $ 200,000 7 AIR & VACUUM RELEASE MANHOLES 10 EA $ 9,000.00 $ 90,000 8 CORE & BOOT SAN MH 1 EA $ 3,500.00 $ 3,500 9 INSIDE MH DROP 5 LF $ 100.00 $ 500 10 4" GATE VALVE AND BOX 22 EA $ 1,200.00 $ 26,400 11 CONNECT TO WASTE MANAGEMENT 1 EA $ 5,000.00 $ 5,000 12 METER MANHOLE 1 EA $ 12,000.00 $ 12,000 13 EROSION CONTROL 1 LS $ 10,000.00 $ 10,000 14 TURF RESTORATION 1 LS $ 15,000.00 $ 15,000 CONSTRUCTION SUB -TOTAL: $ 1,284,200 CONTINGENCIES (20%) $ 256,840 CONSTRUCTION TOTAL: $ 1,541,040 ENG & ADMIN: $ 308,208 EST. PROJECT COST: $ 1,849,248 PRELIMINARY OPINION OF ESTIMATED PROJECT COST WASTE MANAGEMENT -ELK RIVER LEACHATE STUDY CITY OF ELK RIVER MINNESOTA BMI PROJECT NO. T21.109643 ITEM APPROX. UNIT PRICE AMOUNT NO. ITEM DESCRIPTION QUANT. UNIT OPTION 2A - CONNECTION ON TRAIL WEST OF 195TH COURT NW (LINED FMN) FMN) 1 MOBILIZATION 1 LS $ 50,000.00 $ 50,000 2 TRAFFIC CONTROL 1 LS $ 15,000.00 $ 15,000 3 4 -INCH PE FORCEMAIN 26,000 LF $ 15.00 $ 390,000 4 12 -INCH PE CASING PIPE - DIRECTIONALLY DRILLED 26,000 LF $ 75.00 $ 1,950,000 5 LIFT STATION, CONTROLS & SITE WORK 1 LS $ 200,000.00 $ 200,000 6 AIR & VACUUM RELEASE MANHOLES 10 EA $ 9,000.00 $ 90,000 7 CORE & BOOT SAN MH 1 EA $ 3,500.00 $ 3,500 8 INSIDE MH DROP 20 LF $ 100.00 $ 2,000 9 4" GATE VALVE AND BOX 22 EA $ 1,200.00 $ 26,400 10 CONNECT TO WASTE MANAGEMENT 1 EA $ 5,000.00 $ 5,000 11 METER MANHOLE 1 EA $ 12,000.00 $ 12,000 12 EROSION CONTROL 1 LS $ 10,000.00 $ 10,000 13 TURF RESTORATION 1 LS $ 15,000.00 $ 15,000 14 BITUMINOUS TRAIL PATCH 1 4001 SY 1 $ 50.00 1 $ 20,000 CONSTRUCTION SUB -TOTAL: $ 2,788,900 CONTINGENCIES (20%) $ 557,780 CONSTRUCTION TOTAL: $ 3,346,680 ENG & ADMIN: $ 669,336 EST. PROJECT COST: $ 4,016,016 ITEM APPROX. UNIT PRICE AMOUNT NO. ITEM DESCRIPTION QUANT. UNIT OPTION 2A - CONNECTION ON TRAIL WEST OF 195TH COURT NW (NON -LINED FMN) 1 MOBILIZATION 1 LS $ 50,000.00 $ 50,000 2 TRAFFIC CONTROL 1 LS $ 15,000.00 $ 15,000 3 4 -INCH PE FORCEMAIN - DIRECTIONALLY DRILLED 26,000 LF $ 40.00 $ 1,040,000 4 LIFT STATION, CONTROLS & SITE WORK 1 LS $ 200,000.00 $ 200,000 5 AIR & VACUUM RELEASE MANHOLES 10 EA $ 9,000.00 $ 90,000 6 CORE & BOOT SAN MH 1 EA $ 3,500.00 $ 3,500 7 INSIDE MH DROP 20 LF $ 100.00 $ 2,000 8 4" GATE VALVE AND BOX 22 EA $ 1,200.00 $ 26,400 9 CONNECT TO WASTE MANAGEMENT 1 EA $ 5,000.00 $ 5,000 10 METER MANHOLE 1 EA $ 12,000.00 $ 12,000 11 EROSION CONTROL 1 LS $ 10,000.00 $ 10,000 12 TURF RESTORATION 1 LS $ 15,000.00 $ 15,000 13 BITUMINOUS TRAIL PATCH 1 4001 SY 1 $ 50.00 1 $ 20,000 CONSTRUCTION SUB -TOTAL: $ 1,488,900 CONTINGENCIES (20%) $ 297,780 CONSTRUCTION TOTAL: $ 1,786,680 ENG & ADMIN: $ 357,336 EST. PROJECT COST: $ 2,144,016 Appendix G Flow Monitoring Results o a� as9 N L a w O C�C O. 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Waste Management Leachate Pilot Study Elk River, MN December 2016 T21.109643 Submitted by: Bolton & Menk, Inc. 7533 Sunwood Drive NW Suite 206 Ramsey, MN 55303 P:763-433-2851 F: 763-427-0833 Certification Pilot Study Report For Waste Management Leachate Pilot Study Elk River, MN T21.109643 December 2016 I hereby certify that this plan, specification or report was prepared by me or under my direct supervision, and that I am a duly Licensed Professional Engineer under the laws of the State of Minnesota. By: �%� '� c&-& Tejp ala, P.E. License No. 49574 Date: December 13, 2016 Prepared by: Bolton & Menk, Inc. Certification Waste Management/Elk River Leachate Pilot Study I T21.109643 Table of Contents 1. Introduction........................................................................................................................... 1 A, Background...................................................................................................................1 B, Purpose.........................................................................................................................1 C- Report Organization.....................................................................................................2 2. Experimental Set-Up.............................................................................................................. 3 A. Pilot Study Equipment.................................................................................................. 3 B. Pilot Study Procedure and Schedule............................................................................ 7 3. Results and Discussion........................................................................................................... 8 A. Biological Treatment Performance of WWTF.............................................................. 8 B. Effects on the Disinfection System............................................................................... 9 C� WWTF Effluent Flow................................................................................................... 12 D. Bench -Scale Chlorination Test Results....................................................................... 13 E, Impact on the Biosolids.............................................................................................. 15 F. Notes and Visual Observations.................................................................................. 16 G. WWTF Capacity Evaluation........................................................................................ 16 The following Table 3.3 shows the available, and remaining capacity at the City's WWTF if the City accepts the leachate from Waste Management.................................................... 16 4. Conclusion...........................................................................................................................17 A. Summary of Results.................................................................................................... 17 B. Recommendations..................................................................................................... 17 Figures Figure 2.1: 21,000 gallons leachate storage tanks........................................................................... 3 Figure2.2: Primary Hose Pump....................................................................................................... 4 Figure 2.3: Sump Pump Located in 21,000 -gallon Storage Tank .................................................... 5 Figure 2.4: DR 5000 Spectrophotometer......................................................................................... 6 Figure 3.1: WWTF Effluent Results................................................................................................ 9 Figure 3.2: Long -Term Pilot Study Results................................................................................... 10 Figure 3.3: Elk River WWTF Flow............................................................................................... 13 Figure 3.4: Comparison of Color between Chlorine Doses........................................................... 15 Tables Table 3.1: Leachate Percentage of Total Flow............................................................................... 13 Table 3.2: Bench -Scale Effluent Chlorination Testing Results....................................................... 14 Appendix Appendix A: Raw Data Appendix B: Notes and Observation Prepared by: Bolton & Menk, Inc. Table of Contents Waste Management/Elk River Leachate Pilot Study I T21.109643 1. Introduction A, Background Waste Management owns and operates a landfill north of the city of Elk River that generates leachate from both municipal solid waste (MSW) and construction and demolition waste (C&D) at a rate of approximately 35,000 gallon per day (gpd). Actual leachate rates will vary seasonally based on precipitation, however, this evaluation is based on an average daily leachate rate of 35,000 gpd. The leachate is currently stored on-site and transported by truck to the Metropolitan Council wastewater system where it is treated at a facility with a design capacity of more than 251 MGD. The Elk River landfill was opened in 1972 and is projected to remain open through 2063. The City of Elk River is currently undergoing an expansion and upgrade of their wastewater treatment facility. The expansion will change the treatment process from a trickling filter facility to extended aeration activated sludge process. The new facility after the expansion will have fine screen, grit removal, anaerobic basins, anoxic basin, aeration basins, final clarifiers, sand filters, and UV disinfection before the treated wastewater is discharged to Mississippi River. Historically, the City has meet all permit requirements set forth in the NPDES permit. B. Purpose The purpose of the pilot study was to evaluate the treatability of the leachate at Elk River's wastewater treatment facility. The pilot study will evaluate the impacts of the leachate on the Wastewater Treatment System's processes. The main focus will be the removal of the color of the leachate, CBOD, ammonia nitrogen, and phosphorus by the new treatment process of the Wastewater treatment facility (WWTF) at Elk River. The study will also evaluate the quantity (gallons per day) of the leachate that the WWTF can handle without any adverse effects to the treatment. The report will also identify and outline any minor changes that might be necessary at the WWTF to treat the leachate. The leachate is a substance that has both color properties and particles that might not be effectively removed by the treatment process. The objective was to run the pilot Prepared by: Bolton & Menk, Inc. Introduction Waste Management/Elk River Leachate Pilot Study I T21.109643 Page 1 study for approximately two months while slowly increasing the dose of leachate to the desired 35,000 gallons per day. The color of the leachate was expected to adversely affect the performance of UV disinfection system. Therefore, the removal of colloidal particulates and color at the existing Elk River WWTF will be evaluated during the pilot study. C. Report Organization This report is broken up into four sections. Section one covers the background information and the purpose behind the pilot study. Section two covers the experimental set-up and testing procedure(s) while section three covers the results and discussion. Section four provides concluding remarks and a summary of the pilot study. Prepared by: Bolton & Menk, Inc. Introduction Waste Management/Elk River Leachate Pilot Study I T21.109643 Page 2 2. Experimental Set -Up A. Pilot Study Equipment 1.Pumps and Tanks Leachate was transported via trucks from the Waste Management Landfill to the Elk River Wastewater Treatment Facility (WWTF). The leachate was pumped from the trucks into two, 21,000 -gallon storage tanks. The storage tanks were piped together into one main discharge line for a combined storage capacity of 42,000 gallons. Valves on the front of the tanks were used to isolate each tank during the filling process. Figure 2.1 shows two leachate storage tanks and discharge piping system that was used during pilot study. Figure 2.1: 21,000 gallons leachate storage tanks One primary hose pump, capable of pumping 21 gallons per minute (gpm) was connected to the 2 -inch discharge line from the tanks. A Bredel 40 Hose Pump manufactured by Watsen-Marlow was used. The pump was connected to a Variable Frequency Drive (VFD) which allowed the pump to be ramped up or down, from 0 to 60 Hz, depending on the desired flow rate. Varying the rate of speed would vary the rate of flow pumped. The pump was calibrated using a calibration column to determine the desired leachate feed rate. The primary pump is shown in Figure 2.2. Prepared by: Bolton & Menk, Inc. Experimental Set -Up Waste Management/Elk River Leachate Pilot Study I T21.109643 Page 3 Figure 2.2: Primary Hose Pump The leachate was conveyed through a 2 -inch HPDE line and discharged into the open channel downstream of the grit chamber. The pump was run continuously during the duration of the pilot study. The goal of the pilot study was to pump up to 35,000 gallons per day (25 gallons per minute) of leachate into the wastewater plant. Since the primary pump could only pump at 21 gpm, a second pump was needed to add an additional 4 gpm to achieve the desired 25 gpm. The second pump was added into one of the 21,000 -gallon leachate storage tanks. The second pump was a small 1 HP submersible pump, capable of producing up to 90 gallons per minute. The second pump was positioned in the bottom of one of the 21,000 -gallon tanks. The pump location can be seen in Figure 2.3. A 2 -inch PVC discharge line was connected to the pump. To control the flow rate through the 2 -inch Prepared by: Bolton & Menk, Inc. Experimental Set -Up Waste Management/Elk River Leachate Pilot Study I T21.109643 Page 4 discharge line, a 1 1/4" recycle line (blow off) was added onto the discharge line with a valve. Opening and closing the valve would help control the flow through the discharge line. The discharge line was piped using 2 -inch PVC piping to the same location as the primary discharge in the open channel downstream of the grit chamber. A 2 -inch valve was added at the end of the discharge pipe to help calibrate and calculate the flow of the submersible pump. Both pumps were used to pump a combined flow of 35,000 gpd (25 gpm). During the study, only the primary pump (hose pump) was used when leachate was fed at flow rate up to 21 gpm. Both pumps were used when flow rate of 25 gpm was required. Figure 2.3: Sump Pump Located in 21,000 -gallon Storage Tank 2. UV Transmittance Testing Equipment UV transmittance is a practical test that can help measure the impact constituents in the wastewater have on the UV intensity and the effectiveness of UV disinfection. As the UV transmittance increases, the impact of constituents in wastewater is not as significant allowing more light to penetrate the water and inactivate organisms. When the UV transmittance decreases, it is an indicator that a substance containing color or other particles is present and the UV light cannot penetrate the water as effectively. Prepared by: Bolton & Menk, Inc. Experimental Set -Up Waste Management/Elk River Leachate Pilot Study I T21.109643 Page 5 The UV transmittance was tested using a DR 5000 spectrophotometer shown in Figure 2.4. The UV transmittance was tested at 254 nanometers using a 10 - millimeter cuvette. Distilled water was used for a blank and to zero the spectrophotometer. Figure 2A DR 5000 Spectrophotometer 3. Chlorination Testing Procedure and Equipment Chlorine is a strong disinfectant and a strong oxidizing agent. Chlorine has the ability to oxidize compounds within the wastewater, making it a desirable chemical to evaluate the effectiveness that it has to remove the color from the wastewater effluent and increase the UV transmittance. Even though, the City of Elk River does not use chlorine as a primary disinfectant, bench scale testing was performed to evaluate the effectiveness of chlorine to remove color in the wastewater. The testing was designed to determine chlorine dosage that improves UV transmittance in the treated wastewater. The filter effluent samples were Prepared by: Bolton & Menk, Inc. Experimental Set -Up Waste Management/Elk River Leachate Pilot Study I T21.109643 Page 6 collected and stored prior to testing. Samples were collected when the leachate feed rate was 25 gpm and the UV transmittance was recorded at its low valve of 44%. Samples were stored in 5 -gallon containers. A 1000 mg/L of stock solution was prepared using commercially available liquid bleach as a chlorine source. All the glassware was cleaned prior to use. The initial UV transmittance was recorded using the spectrophotometer. A known volume of stock chlorine solution for each desired chlorine dose was pipetted into a 1 -liter (L) sample of the wastewater. The solution was mixed for 30 seconds before being filtered through a glass fiber filter. The UV transmittance was evaluated on the filtered effluent sample. Results of the chlorination testing are discussed in section 3. B. Pilot Study Procedure and Schedule The pilot study was started by slowly introducing the leachate to the WWTF. In the beginning, the leachate was fed at 6.7 gpm for two days to acclimate the existing microorganisms in the aeration basins. After no adverse effects were observed the leachate feed rate was doubled. The leachate feed rate was incrementally increased to 25 gpm over the period of first month of running the pilot study. Over the period of next twenty -plus days of pilot study, the leachate feed rate was decreased to 15 gpm and increased back to 25 gpm. The leachate feed rate had to be decreased due to unavailability of the leachate. The pumps were continuously monitored and adjusted during the duration of the pilot study. A temporary chemical seed system, for chlorination and dechlorination, was provided as a standby disinfection system. This system was needed to meet effluent disinfection requirements in the event of UV disinfection system was not working properly due to leachate color in the wastewater. The primary pump began feeding leachate into the WWTF on September 26, 2016 and the study continued till November 18, 2016. Prepared by: Bolton & Menk, Inc. Experimental Set -Up Waste Management/Elk River Leachate Pilot Study I T21.109643 Page 7 3. Results and Discussion A. Biological Treatment Performance of WWTF The main goals of the pilot study was to evaluate performance of the treatment facilities ability to remove CBOD, ammonia, and phosphorus with the addition of the leachate. Historically, the WWTF at Elk River has met all the effluent NPDES permit limits. The effluent results are shown in Figure 3.1. Overall, the treatment facility maintained high removals of all major components. An average of 99.7% of the influent CBOD (average influent concentration of 296 mg/L) was removed during the duration of the pilot study. The effluent CBOD concentration averaged 0.8 mg/L. The effluent phosphorus concentration averaged 4.07 mg/L. The treatment plant removed 34.5% of the influent phosphorus (average influent concentration of 6.21 mg/L). It shall be noted that during the pilot study period; neither Bio -P process was used nor ferric chloride was added for phosphorus removal. Therefore we expect lower effluent phosphorus results when these processes are online. The fecal coliforms spiked at 4 MPN/100 mL once, as the leachate flow increased. Otherwise, the fecal coliform count was at or near zero. Not shown in Figure 3.1 is the ammonia data. The data collected indicates that the ammonia level in the effluent was less than 0.1 mg/L. All these valves were well below the effluent limits. There was no adverse effect on the biological treatment processes as indicated by effluent quality of the WWTF. These results show that the treatment facility can handle leachate while still meeting the permitted effluent limits. Prepared by: Bolton & Menk, Inc. Results and Discussion Waste Management/Elk River Leachate Pilot Study I T21.109643 Page 8 30 25 J E 20 N 7 15 ry c 10 W 5 N Effluent BOD +Effluent Phosphorus +Effluent TSS Fecal Coliform (MPN/100 mL) --O--Leachate Flow Rate (gpm) -N' 11 OGS �°� �°� �0 �0 ` ' NII N tis" V a' N'h Figure 3.1: WWTF Effluent Results B. Effects on the Disinfection System C 25 E Q 20 N ry 15 0 aD 10 co U N U J 6� L The City of Elk River uses an Ultraviolet (UV) disinfection system at the WWTF. UV disinfection has several advantages such as improved disinfection, no need to use chlorine or other chemicals, and the system is easy to maintain. However, there are some disadvantages to UV disinfection. One of the primary disadvantages is that when particles or other substances are present in the wastewater, the UV light will reflect off the particles reducing the effectiveness of UV disinfection. Organisms can be attached to or behind these particles and the UV light will not reach them, thus ineffectively inactivating them. The color and fine particles in leachate can adversely affect the performance of UV disinfection systems. Even though the biological processes performed very well in removing CBOD, ammonia, and phosphorous, however, the biological process was not able to remove color introduced in wastewater by the leachate. One practical tool for measuring the effectiveness of the UV disinfection system is to measure the UV transmittance. Prepared by: Bolton & Menk, Inc. Results and Discussion Waste Management/Elk River Leachate Pilot Study I T21.109643 Page 9 :01 70 60 0 50 c a� i= 40 30 20 10 C The UV transmittance is a ratio of the light intensity at a certain distance from the light source to the light intensity at the light source. Typical UV transmittance ranges from 45% to 70%, depending on the type of wastewater and the treatment processes ahead of the UV disinfection system. The existing UV disinfection system is designed at 65% UVT with dose of 30 mJ/cm2 at peak flow of 7.0 MGD. Figure 3.2 shows the results from the pilot study. The UV transmittance and the leachate flow rate are shown together to show the effect of increased leachate flow on UV transmittance. Prior to adding leachate, the UV transmittance averaged 68%. The leachate flow rate began at 6.7 gpm (9,700 gpd). With minimal effect on the transmittance, after 45 hours of run time, the flow rate was increased to 13 gpm (18,700 gpd). The UV transmittance was still above design valve with an average value of 66%. — 3UV Transmittance Leachate Flow Rate :C 70 60 E CL 50 1D CO 40 0 5= 30 CO U CO 20 J 10 0 0 90 182 274 366 456 547 639 731 821 912 1004 1096 1186 1277 Run Time (hours) Figure 3.2: Long -Term Pilot Study Results After the flow rate was increased to 13 gpm, the UV transmittance began to drop from 66% to 61% over the course of another 45 hours. This indicates that by doubling the flow rate, the UV transmittance saw a decrease of 5% and the leachate flow rate does have an effect on the UV transmittance. The immediate effects on the Prepared by: Bolton & Menk, Inc. Results and Discussion Waste Management/Elk River Leachate Pilot Study I T21.109643 Page 10 transmittance with the change in leachate flow rate were not noticeable as it took some time for the leachate to make it through the treatment plant to the effluent channel. Figure 3.2, shows that the UV transmittance declined each time the leachate feed rate was increased. Once it was determined the leachate feed rate was the primary variable affecting the UV transmittance, the leachate flow was increased again to study the effects of an even higher loading. After 403 hours of run time, the flow rate of leachate was increased to 21 gpm (30,200 gpd). As noted earlier, it took several hours before the transmittance in the effluent began to decline. After approximately 300 hours of run time at 21 gpm, the UV transmittance had decreased to an average of 46%. Over this same period, the rate of decline in the UV transmittance had slowed and the transmittance had become more stable around 46%. Even after extended period of the leachate feed rate of 21 gpm, the UV transmittance was maintained at approximately 46-47%. With the transmittance stabilized near 46-47% after 745 hours of run time, the leachate flow rate was increased to the goal flow rate of 25 gpm (35,000 gpd) for 91 hours. From Figure 3.2, it can be observed that the UV transmittance had slightly decreased during this period to 45%. However, this decrease is insignificant when compared to the increase in volume of leachate that was being fed into the treatment plant. The transmittance was at the bottom of the typical range of 45% to 70% and well below the designed valve of 65% for the existing system. During the next 167 hours (836 to 1003 hours of run time), the feed rate was adjusted to observe the effect of different leachate flows on UV transmittance. During this period, the city was concerned with the effectiveness of the UV disinfection as the transmittance was continually below 50%. The City of Elk River began to add chlorine for supplemental disinfection prior to the sand filters. The purpose of the chlorine was to add additional disinfection and insure the City did not incur a permit violation. During this time, an increase of transmittance was observed. This increase is due to the lower leachate flow and possibly the addition of chlorine to the system. Chlorine is a good oxidizer and will aide in removing some of the color from the water, thus helping to increase the transmittance. Results indicated there was an effect Prepared by: Bolton & Menk, Inc. Results and Discussion Waste Management/Elk River Leachate Pilot Study I T21.109643 Page 11 of leachate flow on UV transmittance. After the leachate flow is reduced, the transmittance will begin to increase. As the leachate flow increases, the UV transmittance would decrease. The level to which the transmittance will decrease depends on how much leachate is fed into the system. After 1,000 hours of run time, the leachate flow rate was again increased to 25 gpm for 100 continuous hours. Shortly before the flow rate was increased the City stopped feeding chlorine into the system. With a leachate flow of 25 gpm into the plant the transmittance decreased to 46% in the effluent stream. This is similar to the transmittance observed during the first test at 25 gpm. With successive tests at 25 gpm of leachate flow the transmittance did not drop below 45%. After 1,171 hours of run time the leachate feed pumps were shut off. 106 hours after the leachate feed pumps were shut off the transmittance increased to 62% which is well within the typical range for domestic wastewater. The pilot study results show the UV transmittance decreases with increase in the leachate flow up to 20 gpm. However, when the leachate flow was increased from 20 gpm to 25 gpm the decrease in transmittance was not as significant. C. WWTF Effluent Flow The City of Elk River continuously monitors the flow into and out of the treatment plant. The total plant flow is generally consistent as shown in Figure 3.3. The average flow during the duration of the pilot study was 1.34 MGD. The wastewater plant flow can be one factor that can influence the treatment of leachate. With higher wastewater flows, the leachate becomes more diluted in the waste stream and will not have as significant of an effect on the transmittance. During the pilot study leachate was pumped at several different flows for different lengths of time. Table 3.1 below shows what percentage of the total flow was leachate and corresponding UV transmittance. This can be helpful in determining how much leachate the system can initially handle in full-scale operation. When the leachate was fed into the system at 25 gpm this equated to 2.7% of the total flow. Prepared by: Bolton & Menk, Inc. Results and Discussion Waste Management/Elk River Leachate Pilot Study I T21.109643 Page 12 Table 3.1: Leachate Flow (gpm) Leachate Percentage Average Plant Flow (MGD) of Total Flow Percent of Total Average Plant Flow UVT 6.7 1.34 0.72% 65.5% 13 1.34 1.40% 64.0% 18 1.34 1.93% 56.5% 21 1.34 2.26% 49.4% 25 1.34 2.69% 47.8% 1.8 1.6 1.4 (D 1.2 7 1 3 0 E: 0.8 0.4 0.2 0 9/22 Elk River WWTF Flow 10/2 10/12 10/22 11/1 11/11 11/21 Figure 3.3: Elk River WWTF Flow D. Bench -Scale Chlorination Test Results As noted earlier, chlorine is a strong disinfectant and has a strong oxidation potential. The goal of the chlorination study was to determine what dose of chlorine would be optimal for increasing the UV transmittance. The lowest recorded UV transmittance occurred after 837 hours of run time with a value of 44.5%. The leachate flow rate at the time was 25 gpm. Samples of the effluent wastewater were collected and stored to test the dose of chlorine required to increase the UV transmittance. The bench -scale chlorination testing results are shown in Table 3.2. Prepared by: Bolton & Menk, Inc. Results and Discussion Waste Management/Elk River Leachate Pilot Study I T21.109643 Page 13 Table 3.2: Bench -Scale Effluent Chlorination Testing Results Sample UV Chlorine Final UV UVT Percent Transmittance Concentration Transmittance (%) Increase (%) (mg/L Cl) 44.5 0 44.6 0.22% 44.5 2 46.4 4.09/ 44.5 3 47.4 6.12% 44.5 4 48 7.29/ 44.5 6 48.8 8.81% 44.5 8 49.7 10.46% 44.5 10 50.5 11.88% 44.5 14 51.1 12.92% 44.5 18 51.2 13.09% 44.5 24 51.3 13.26% 44.5 30 51.5 13.59% 44.5 50 50.5 11.88/ 44.5 100 47.7 6.71/ From Table 3.2 the sample UV transmittance was approximately 44.5%. The chlorine doses ranged from 2 mg/L to 100 mg/L as chlorine. Initially, the UV transmittance began to increase with each dose of chlorine indicating the chlorine was removing species that were hindering the transmittance. The peak transmittance occurred with a chlorine dose of 30 mg/L at 51.5%. However, with a dose of 50 mg/L of chlorine the UV transmittance dropped to 50.5%. The chlorine dose was doubled to 100 mg/L and another drop in transmittance was observed. This test results show that the chlorine does remove color (or recover transmittance) but only up to a certain level. The leachate color cannot be completely removed by this method. One possible theory is that the chlorine will initially oxidize particles and other substances in the water that hinder the transmittance. With higher chlorine doses, instead of oxidizing the substances, the chlorine will react with them and create new substances that will hinder the transmittance. Leachate can contain many different organic substances that are able to react with chlorine at the higher doses. Based on small-scale bench test at Elk River, an optimum dose of chlorine is 18 to 20 Prepared by: Bolton & Menk, Inc. Results and Discussion Waste Management/Elk River Leachate Pilot Study I T21.109643 Page 14 mg/L for maximum transmittance increase. However, smaller doses will also increase the transmittance to a certain degree. In addition, a dose of 30 mg/L chlorine will yield visually clearer water. Lower chlorine doses still contain some visible color in the water. A comparison between a chlorine dose of 24 mg/L Cl and the optimum dose of 30 mg/L Cl is shown in Figure 3.4. The dose with 24 mg/L of Cl still has a yellow color while the 30 mg/L dose is mostly clear. Higher doses of chlorine do not increase the visual clarity of the water. 24 mg/L as Cl 30 mg/L as Cl Figure 3.4: Comparison of Color between Chlorine Doses E. Impact on the Biosolids The treatment of leachate at the WWTF would generate additional biosolids. The WWTF would have to process, handle and dispose these additional biosolids. There was no practical way to quantify the additional biosolids generated by the leachate during the study, but quantity of biosolids produced by the leachate can be calculated based on the loading associated with the leachate flow. An estimated quantity of additional biosolids generated by 35,000 gallons per day would be approximately 636 dry Lbs/day or 2,716 gpd at 2% solids. Prepared by: Bolton & Menk, Inc. Results and Discussion Waste Management/Elk River Leachate Pilot Study I T21.109643 Page 15 F. Notes and Visual Observations During the course of the pilot study, several observations were made regarding color of the wastewater, leachate, and the effluent. Directly downstream of where the leachate was discharged are two large anaerobic basins. Typically, the wastewater is gray in color. However, when leachate was being fed into the treatment facility, it turned the wastewater a dark brown or black. This was visually evident in the anaerobic basins. The anaerobic basins discharged into the aeration basins, but there was no change in color in the large aeration basins. As the leachate was delivered daily, it was observed that the color would change depending on the day. This could be due to age of the leachate and where it was collected from in the landfill. Some days it was very black and had a strong odor while other days it was browner in color and had less odor. G. WWTF Capacity Evaluation The following Table 3.3 shows the available, and remaining capacity at the City's WWTF if the City accepts the leachate from Waste Management. bw Table 3.3: Elk River's WWTF Capacity City's Waste Approximate Parameter Design Current Management Remaining Future Value Usage Requested Available Population Remaining AWW Flow, MGD 4.54 1.34 0.35 2.85 CBOD5, Lbs/d 10,899 2193.8 776.0 7929.2 28,600 TSS, Lbs/d 9,990 3541.5 146.0 6302.5 Phosphorous, Lbs/d j 273 69.4 j 3.0 j 200.6 Prepared by: Bolton & Menk, Inc. Results and Discussion Waste Management/Elk River Leachate Pilot Study I T21.109643 Page 16 4. Conclusion A. Summary of Results Leachate was fed into the treatment plant at several flow rates to observe the ability to treat the leachate and maintain treatment performance at the facility. The goal was to evaluate the feasibility of treating up to 35,000 gpm of leachate flow at the Elk River WWTF. Overall, the WWTF treated the leachate very efficiently to remove CBOD, TSS, ammonia, and phosphorous. As expected the leachate added color to the wastewater which had impact on the operation of the UV disinfection. Even though the UV disinfection system performed well enough to meet effluent coliform limits, the disinfection system ran below the designed UV transmittance by the manufacturer. The pilot study result showed that the UV transmittance was inversely proportional to the leachate feed. As the leachate feed rate was increased the UV transmittance went down. The increase and decrease of the leachate feed rate directly correlated to the effluent UV transmittance but this fluctuation of leachate feed did not have any impact on the biological treatment processes. A bench -scale chlorination test demonstrated that chlorine does have the ability to remove color from the wastewater and increase the UV transmittance. But a high dose of chlorine was required to see significant improvement of UV transmittance. Additionally, the existing system at Elk River's WWTF facility does not have an in place chlorine feed system to aid in color removal. B. Recommendations The pilot study showed that the Elk River WWTF can handle leachate from Waste Management and have the ability to treat it while maintaining treatment performance for the required permitted effluent limits. Careful monitoring of effluent wastewater and the UV transmittance will ensure the treatment plant continues to perform and meet all permit limits. It would be very critical to monitor the effluent UV transmittance and effluent fecal coliform count on daily basis as that is the first parameter to indicate a problem with the disinfection system performance. Prepared by: Bolton & Menk, Inc. Conclusion Waste Management/Elk River Leachate Pilot Study I T21.109643 Page 17 The UV disinfection system for Elk River's WWTF is designed at 65% UV transmittance with dose of 30 mJ/cm2 for 7.0 MGD flow. During the study period the lowest observed UVT was 45%, which is well below the design value. Trojan Technologies (manufacturer of existing UV system) was contacted to receive recommendation for UVT at the City's current flow of 1.3 MGD. Trojan would not give any recommendation for UVT at flows lower than 7.0 MGD and stated that if the UV disinfection system runs below the designed UVT of 65%, they would not guarantee the performance of the system. However, based on the City's experience of meeting fecal coliform results while running at 50% UV transmittance with a trickling filter plant and Bolton and Menk's experience with similar application, we recommend that Elk River's WWTF can handle a leachate flow that equals to approximately 2% of the City's average flow and still maintain proper UV disinfection of approximately 50% UV transmittance. The 2% ratio currently equates to a leachate volume of approximately 25,000 to 27,000 gpd. It should be noted that as the flow to the city's WWTF increases, the City should be able to accept additional leachate due to increased dilution factor. If the City of Elk River and Waste Management decide to enter into a treatment agreement for the City to accept leachate, following are a few items that need to be considered: location of disposing leachate and odor control, the recommended leachate flow (ratio of leachate to city's flow), and additional biosolids generated. Prepared by: Bolton & Menk, Inc. Conclusion Waste Management/Elk River Leachate Pilot Study I T21.109643 Page 18 Appendix A: Raw Data Date Time Run Hours Leachate Flow Ratem (gp ) UV Transmittance N Gallons Pumped (gph) Cumulative Gallons Pumped Plant Flow (MGD) 1:30 PM 0 6.7 68.8 0 0 2:00 PM 0.5 6.7 68.8 202 202 9/26/2016 3:00 PM 1.5 6.7 68.2 405 607 1.386 4:00 PM 2.5 6.7 68.6 405 1,011 4:30 PM 3.0 6.7 68.7 202 1,214 8:00 AM 18.5 6.7 68.8 6271 7,485 9:00 AM 19.5 6.7 69.1 405 7,890 10:00 AM 20.5 6.7 69.1 405 8,294 11:00 AM (1) 21.5 6.7 69.0 405 8,699 12:00 PM 22.5 6.7 68.6 405 9,103 9/27/2016 1:00 PM 23.5 6.7 68.7 405 9,508 1.201 1:30 PM 24 6.7 68.7 202 9,710 2:30PM (2) 25 6.7 68.5 400 10,110 3:30 PM 26 6.7 69.0 400 10,509 4:30 PM 27 6.7 69.0 400 10,909 8:30 AM (3) 43 6.7 66.3 6393 17,302 9:30 AM (4) 44 6.7 66.2 400 17,701 10:30 AM 45 6.7 66.3 -- -- 10:30 AM 45 12.9 66.3 772 18,473 11:30 AM (5) 46 12.9 66.4 772 19,245 9/28/2016 12:30 PM 47 12.9 66.2 772 20,017 1.464 1:30 PM 48 12.9 66.0 772 20,789 2:30 PM 49 12.9 65.3 772 21,560 3:30 PM (6) 50 12.9 65.5 772 22,332 4:30 PM 51 12.9 65.8 772 23,104 8:30 AM (7) 67 12.9 65.8 11962 35,066 9:30 AM 68 12.9 65.6 772 35,838 10:30 AM 69 12.9 65.4 772 36,610 11:30 AM 70 12.9 65.3 772 37,382 9/29/2016 12:30 PM 71 12.9 65.4 772 38,153 1.097 1:30 PM 72 12.9 65.5 772 38,925 2:30 PM 73 12.9 65.5 772 39,697 3:30 PM 74 12.9 65.1 772 40,469 8:30 AM (8) 91 12.9 61.4 13120 53,589 9:30 AM 92 12.9 62.2 772 54,360 10:30 AM 93 12.9 61.2 772 55,132 9/30/2016 11:30 AM (9) 94 12.9 61.2 772 55,904 1.293 11:30 AM 94 6.7 61.2 -- -- 12:30 PM 95 6.7 61.5 400 56,304 7:30 AM (10) 162 6.7 60.7 26771 83,074 8:30 AM (11) 163 6.7 60.3 400 83,474 9:30 AM 164 12.9 60.5 772 84,245 10/3/2016 10:30 AM 165 12.9 59.8 772 85,017 1.373 3:30 PM 170 12.9 60.7 3859 88,876 4:30 PM (12) 171 12.9 60.5 -- -- 4:30 PM (12) 171 18.1 60.5 929 89,805 8:30 AM (13) 187 18.1 60.7 17370 107,175 9:30 AM 188 18.1 61.3 1086 108,260 10:30 AM 189 18.1 60.3 1086 109,346 10/4/2016 2:30 PM 193 18.1 60.2 4343 113,689 1.419 3:30 PM 194 18.1 60.0 1086 114,774 4:30 PM 195 18.1 60.4 1086 115,860 8:30 AM 211 18.1 57.7 17370 133,230 10/5/2016 9:30 AM 212 18.1 57.5 1086 134,316 1.227 10:30 AM 213 18.1 57.2 1086 135,401 2:30 PM 217 18.1 56.8 4343 139,744 3:30 PM 218 18.1 56.9 1086 140,829 4:30 PM 219 18.1 56.7 1086 141,915 8:30 AM 235 18.1 55.0 17370 159,285 9:30 AM 236 18.1 56.2 1086 160,371 10:30 AM 237 18.1 54.4 1086 161,456 10/6/2016 2:30 PM 241 18.1 54.6 4343 165,799 1.472 3:30 PM 242 18.1 54.4 1086 166,884 4:30 PM 243 18.1 54.4 1086 167,970 8:30 AM 259 18.1 53.8 17370 185,340 9:30 AM (14) 260 18.1 54.4 1086 186,426 10:30 AM 261 18.1 53.7 1086 187,511 10/7/2016 11:30 AM 262 18.1 54.2 1086 188,597 1.167 2:30 PM (15) 265 18.1 53.8 3257 191,854 2:30 PM (15) 265 6.7 53.8 -- -- 3:30 PM 266 6.7 53.8 402 192,256 7:30 AM (16) 330 6.7 56.0 25572 217,828 7:30 AM (16) 330 18.1 56.0 -- -- 8:30 AM 331 18.1 56.5 1086 218,913 9:30 AM 332 18.1 56.6 1086 219,999 10/10/2016 10:30 AM 333 18.1 56.7 1086 221,085 1.428 2:30 PM 337 18.1 56.8 4343 225,427 3:30 PM 338 18.1 56.9 1086 226,513 4:30 PM 339 18.1 57.4 1086 227,599 7:30 AM (17) 354 18.1 57.1 17370 244,969 7:30 AM (17) 354 18.1 57.1 -- -- 8:30 AM 355 18.1 57.0 1086 246,054 9:30 AM 356 18.1 56.6 1086 247,140 10:30 AM (18) 357 18.1 56.7 1086 248,226 10/11/2016 11:30 AM 358 18.1 56.6 -- -- 1.601 11:30 AM 358 6.7 56.6 400 248,625 2:30 PM 361 6.7 55.5 1199 249,424 3:30 PM 362 6.7 55.3 400 249,824 4:30 PM 363 6.7 55.0 400 250,223 7:30 AM 378 6.7 54.7 5993 256,217 10/12/2016 3:30 PM(19) 386 6.7 51.7 3196 259,413 1.477 4:30 PM 387 6.7 51.0 400 259,813 8:30 AM (20) 403 6.7 56.4 6393 266,206 8:30 AM (20) 403 20.7 56.4 -- -- 9:30 AM 404 20.7 56.6 1245 267,450 10/13/2016 10:30 AM 405 20.7 56.7 1245 268,695 1.491 2:30 PM 409 20.7 55.7 4978 273,673 3:30 PM 410 20.7 56.5 1245 274,918 4:30 PM 411 20.7 56.8 1245 276,163 10/14/2016 11:30 AM (21) 430 20.7 56.6 23648 299,810 1.366 8:30 AM 499 20.7 51.1 85878 385,688 10/17/2016 9:30 AM 500 20.7 49.7 1245 386,933 1.334 10:30 AM 501 20.7 49.6 1245 388,177 2:30 PM 505 20.7 50.3 4978 393,156 3:30 PM 506 20.7 50.9 1245 394,400 8:30 AM 523 20.7 49.5 21158 415,559 9:30 AM 524 20.7 49.8 1245 416,803 10/18/2016 10:30 AM 525 20.7 50.3 1245 418,048 1.334 2:30 PM 529 20.7 49.9 4978 423,026 3:30 PM 530 20.7 49.9 1245 424,271 10/19/2016 8:30 AM 547 20.7 49.7 21158 445,429 1.23 9:30 AM 548 20.7 49.4 1245 446,674 10:30 AM 549 20.7 48.7 1245 447,918 2:30 PM 553 20.7 48.7 4978 452,897 3:30 PM 554 20.7 48.6 1245 454,141 8:30 AM (22) 571 20.7 48.2 21158 475,300 9:30 AM 572 20.7 47.6 1245 476,544 10/20/2016 10:30 AM 573 20.7 47.7 1245 477,789 1.329 2:30 PM 577 20.7 47.9 4978 482,767 3:30 PM 578 20.7 48.1 1245 484,012 9:30 AM 596 20.7 48.4 22403 506,415 10:30 AM 597 20.7 49.0 1245 507,660 10/21/2016 2:30 PM 598 20.7 48.9 1245 508,904 1.162 3:30 PM 602 20.7 48.8 4978 513,883 8:30 AM 667 20.7 48.0 80899 594,782 1:30 PM 672 20.7 47.4 6223 601,005 10/24/2016 3:30 PM 674 20.7 47.5 2489 603,494 1.529 4:30 PM 675 20.7 47.3 1245 604,739 8:30 AM 691 20.7 47.2 19914 624,653 9:30 AM (23) 692 20.7 46.9 -- 9:30 AM (23) 692 24.8 46.9 1486 626,139 10:30 AM 693 24.8 46.2 1486 627,625 10/25/2016 3:30 PM 698 24.8 46.4 7431 635,055 1.191 4:30 PM 699 24.8 46.4 1486 636,542 5:30 PM 700 24.8 46.4 -- -- 5:30 PM 700 20.7 46.4 1245 637,786 7:30 AM 714 20.7 46.3 17425 655,211 8:30 AM 715 20.7 46.3 1245 656,455 10/26/2016 9:30 AM 716 20.7 46.1 1245 657,700 1.288 10:30 AM 717 20.7 46.3 1245 658,945 2:30 PM 721 20.7 46.4 4978 663,923 3:30 PM 722 20.7 47.0 1245 665,168 4:30 PM 723 20.7 47.0 1245 666,412 8:30 AM 739 20.7 46.7 19914 686,326 9:30 AM 740 20.7 46.9 1245 687,570 10:30 AM 741 20.7 47.3 1245 688,815 10/27/2016 2:30 PM (24) 745 20.7 47.3 -- -- 1.323 2:30 PM (24) 745 24.8 47.8 4978 693,794 3:30 PM 746 24.8 48.4 1486 695,280 4:30 PM 747 24.8 48.2 1486 696,766 8:30 AM 763 24.8 47.7 23778 720,544 9:30 AM 764 24.8 48.2 1486 722,030 10:30 AM 765 24.8 48.3 1486 723,516 10/28/2016 2:30 PM 769 24.8 47.7 5944 729,460 1.332 3:30 PM 770 24.8 47.3 1486 730,947 4:30 PM 771 24.8 47.4 1486 732,433 8:30 AM 835 24.8 45.5 95112 827,544 9:30 AM (25) 836 24.8 45.0 1486 829,031 10/31/2016 9:30 AM (25) 836 9.5 45.0 -- -- 1.296 10:30 AM 837 9.5 44.5 571 829,601 2:30 PM 841 9.5 46.8 2282 831,883 3:30 PM 842 9.5 46.4 571 832,454 4:30 PM 843 9.5 46.5 571 833,024 8:30 AM (26) 859 9.5 49.0 9129 842,153 11/1/2016 9:30 AM 860 9.5 48.8 571 842,723 1.317 9:30 AM 860 15.0 48.8 -- -- 10:30 AM 861 15.0 47.1 900 843,623 2:30 PM 865 15.0 48.4 3600 847,223 3:30 PM 866 15.0 48.6 900 848,123 4:30 PM 867 15.0 48.4 900 849,023 8:30 AM 883 15.0 48.8 14400 863,423 9:30 AM 884 15.0 48.9 900 864,323 10:30 AM 885 15.0 48.2 900 865,223 11/2/2016 2:30 PM 889 15.0 48.5 3600 868,823 1.299 3:30 PM 890 15.0 49.7 900 869,723 4:30 PM 891 15.0 50.4 900 870,623 8:30 AM 907 15.0 50.6 14400 885,023 9:30 AM 908 15.0 49.7 900 885,923 10:30 AM (27) 909 15.0 49.7 900 886,823 11/3/2016 10:30 AM (27) 909 20.7 49.7 -- -- 1.412 2:30 PM 913 20.7 50.2 4978 891,802 3:30 PM 914 20.7 49.8 1245 893,046 4:30 PM 915 20.7 49.9 1245 894,291 8:30 AM 931 20.7 49.2 19914 914,205 9:30 AM 932 20.7 48.9 1245 915,449 10:30 AM (28) 933 20.7 48.7 405 915,854 11/4/2016 10:30 AM (28) 933 6.7 48.7 -- -- 1.196 2:30 PM 937 6.7 48.8 1618 917,472 3:30 PM (29) 938 6.7 48.9 405 917,877 4:30 PM 939 6.7 48.7 405 918,281 8:30 AM (30) 1003 6.7 53.8 25894 944,175 8:30 AM (30) 1003 24.8 53.8 -- -- 9:30 AM 1004 24.8 54.1 1486 945,662 11/7/2016 10:30 AM 1005 24.8 54.0 1486 947,148 1.467 3:30 PM 1010 24.8 54.7 7431 954,578 4:30 PM 1011 24.8 54.9 1486 956,064 8:30 AM 1027 24.8 53.4 23778 979,842 11/8/2016 9:30 AM 1028 24.8 53.2 1486 981,328 1.415 10:30 AM 1029 24.8 53.1 1486 982,815 3:30 PM 1034 24.8 52.4 7431 990,245 4:30 PM 1035 24.8 52.5 1486 991,731 8:30 AM 1051 24.8 49.6 23778 1,015,509 9:30 AM 1052 24.8 49.5 1486 1,016,995 11/9/2016 10:30 AM 1053 24.8 49.3 1486 1,018,482 1.415 3:30 PM 1058 24.8 49.4 7431 1,025,912 4:30 PM 1059 24.8 49.2 1486 1,027,398 8:30 AM 1075 24.8 47.2 23778 1,051,176 9:30 AM 1076 24.8 46.8 1486 1,052,662 11/10/2016 10:30 AM 1077 24.8 46.9 1486 1,054,148 1.363 3:30 PM 1082 24.8 46.4 7431 1,061,579 4:30 PM 1083 24.8 46.3 1486 1,063,065 8:30 AM (31) 1099 24.8 46.0 23778 1,086,843 8:30 AM (31) 1099 6.7 46.0 -- -- 11/11/2016 9:30 AM 1100 6.7 46.3 405 1,087,248 1.170 3:30 PM 1106 6.7 46.7 2428 1,089,675 8:30 AM (32) 1171 6.7 51.0 26299 1,115,974 11/14/2016 8:30 AM 1321 1171 0.0 51.0 0 1,115,974 1.290 11/15/2016 8:30 AM 1195 0.0 53.2 0 1,115,974 11/16/2016 8:30 AM 1219 0.0 55.6 0 1,115,974 11/17/2016 8:30 AM 1243 0.0 58.8 0 1,115,974 8:30 AM 1267 0.0 61.5 0 1,115,974 11/18/2016 6:30 PM 1277 0.0 62.0 0 1,115,974 Appendix B: Notes and Observation Notes and Observations On 9/27/16 at 11:20 am, the discharge of the leachate (1) hose was moved into the effluent channel of the grit chamber. Previously, it was in the influent channel. Pump calibration was checked at 2:00 pm on 9/27/16. The (2) calibration data was updated and the total gallons pumped was updated for the updated pump flow (3) Tanks were approximately half full based on visual inspection Flow rate was increased to 12.9 gpm at 9:30 am on (4) September 28, 2016. The VFD was set at 40 Hz. Pump calibration was repeated in triplicate. Tank levels were checked at 11:00 am by measuring (5) leachate depth in tank. The calibration chart is posted on the side of the South tank. Tank levels were checked at 4:00 PM by measuring leachate depth in tank. North tank had 34" (5,700 gal) and (6) the South tank had 36" (6,100 gal) for a total of 11,800 gallons. Waste management will not be here to fill the tanks until the morning of 9/29/16. Rice Lake Construction shut the pump off at 7:00 am because the tanks were dry. First load of leachate was (7) delivered at 7:15 am. Pump was turned back on at 7:30 am to 12.9 gpm. Leachate was very dark in color. Turned the channel a dark black. First UV Transmittance test conducted at 8:30 am. Both tanks were filled with leachate prior to the flow being (g) reduced. The tanks were both greater than 90% full. (9) Flow rate was reduced to 6.7 gpm for the weekend. Tanks were nearly dry. Only a few inches of leachate were (10) still in the bottom of each tank. The pump was still pumping at 6.7 gpm. Filling of the tanks started at 7:30 am. (11) Flow rate was increased to 12.9 gpm. Flow rate was increased to 18.1 gpm at 4:00 pm on (12) October 3, 2016. The VFD was set at 55 Hz. Pump calibration was repeated in triplicate. (13) Tanks were filled with leachate at 7:30 am. 5 loads required to fill the tanks. (14) UV dose checked: 29.02 mJ/cm2 (15) Flow rate was reduced to 6.7 gpm for the weekend. (16) Flow rate was increased to 18.1 gpm. Tanks filled at 7:00 AM Flow rate was increased to 20.7 gpm at 8:30 am on (17) October 11, 2016. The VFD was set at 60 Hz (max). Pump calibration was repeated in triplicate. Flow rate was reduced to 6.7 gpm. Waste Management (18) was not able to bring any leachate on 10/12/16. The tanks will be filled on 10/13/16 and the flow increased to 20.7 gpm. The City began to drain Final Clarifier No. 3. This put a lot (19) more solids into the clarifiers. The City backwashed filters 9 times during the day. Drop in UV Transmittance most likely due to draining of one clarifier into the other two Notes and Observations Cont.... (20) Flow rate was increased to 20.7 gpm. Tanks filled by 9:00 AM (21) Pumps were stopped to secure the hose in the discharge channel. The City bypassed specific treatment processes during (22) construction. Slight drops in UV transmittance could be due to the decreased performance of the system to remove solids. Flow rate increased to 25 gpm (36,000 gpd). The large pump was set to 15 gpm (48 Hz on the VFD) and the small (23) pump was set to 10 gpm by throttling the valve on the effluent line. The recycle valve was left at 100% open. (24) Flow rate was increased to 24.8 gpm. The flow rate was reduced to 9.5 gpm because the landfill was not able to deliver enough leachate to meet the (25) demand of 36,000 gpd. The leachate was very black in color and turned the anaerobic tanks black. Only 3 truckloads were delivered today. Possibility of no trucks tomorrow. The City began feeding chlorine prior to sand filtration (26) because the UV transmittance was dropping. The chlorine took some of the color out of the water. (27) Flow rate was increased to 20.7 gpm. (28) Flow rate was reduced to 6.7 gpm for the weekend. (29) City stopped feeding chlorine. (30) Flow rate was increased to 24.8 gpm. (31) Flow rate was reduced to 6.7 gpm for the weekend. Pilot Study was stopped. The pumps were turned off and (32) the tanks were cleaned out by flushing clean water through. No leachate was delivered. �Wr CAN, ok 77 O U ok 77