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6.4. SR 08-20-2007 REQUEST FOR ACTION To Ci Council Agenda Section Community Development Meeting Date August 20, 2007 Item Number 6.4. Prepared by Rebecca Haug, Environmental Administrator Reviewed by Item Description Request by Tiller Corporation for Conditional Use Permit for Mineral Excavation, Case No. CU 07-21- Public Hearing Reviewed by Action Requested Staff and the Planning Commission recommend approval of the request with the following conditions: 1. Traffic from the operations area will access the new alignment of County Rd 33 with the majority of traffic generated from the existing operation area head east to US Hwy 169. Proctor Rd and County Rd 33 west of the exiting operation will only be used for local projects. 2. The site must operate under a Minnesota Pollution Control Agency (MPCA) NPDES permit for gravel mining facilities and a Stormwater Pollution Prevention Plan be implemented 3. Watering on-site gravel haul roads must be done to reduce dust 4. Fifty-foot setbacks from property lines and right-of-ways that are not adjacent to other mining areas must be maintained. 5. Along Proctor Rd, a setback as determined and marked by the Sherburne County Forester must be maintained and in no instance will the setback be less than 50 feet from right-of- way. 6. The operator shall take measures deemed appropriate by the Sherburne County Forester to control oakwilt. Cutting of trees between April and July is prohibited. 7. The site must be graded in accordance to the reclamation plan 8. Operations must be in compliance with all State noise standards 9. Mining and crushing will be conducted between 7:00 a.m. to 7:00 p.m. Monday - Saturday 10. Topsoil will be retained on-site and used to create screening berms 11. Active slopes to be approximately 1.5:1 and finished slopes not to exceed 4:1 12. Property will be rezoned to Mineral Excavation Overlay Background/Discussion Tiller Corporation (Tiller) and its operating division Barton Sand & Gravel Co. are requesting a Conditional Use Permit for Mineral Excavation on a parcel of property adjacent to existing sand and gravel mining facility also operated by Tiller. The property encompasses 36.6 acres however; the applicant is only proposing to mine the northern 19.53 acres as illustrated on the attached map (Exhibit A). This proposed mining area is adjacent to property that was included in the 1994 EIS Gravel Mining Study. This spring, the applicant completed an Environmental Assessment Worksheet (EA W) which the s: \ Council\Rebecca \ Tiller CUP.doc City Council on June 18, 2007 declared that the preparation of an Environmental Impact Statement is not necessary. Public meetings were held on Wednesday, September 13,2006 and Tuesday, July 17, 2007 to answer questions the public had in regards to the proposed Conditional Use Permit. There were seven (7) residents in attendance at the July meeting and approximately nine (9) households were represented at the September meeting. Additionally, public meetings were held on February 6 and May 14,2007 to address concerns about the EA W. At the February 6th meeting, only staff and the applicant were present and at the May 14th meeting, three residents attended. At the August 14, 2007 Planning Commission, much of the discussion revolved around the setback from Proctor Rd and Oak Wilt. The applicant has prepared a map showing where the setback will be along Proctor Rd to ensure that the root systems from the trees in the buffer area will be protected. By protecting the root systems, the possibility of Oak Wilt occurring in this area is gready reduced. The applicant is also aware that any work around oak trees should be completed in the fall and winter months and have agreed to that. Financial Impact N/A Attachments . Application for a Conditional Use Permit for Mineral Excavation, dated 8/31/06 . Location Map . Exhibit A - Excavation Plan . Exhibit B - Setback Plan . Letter date August 1, 2007 from Tim Edgeton, Sherburne County Forest & Parks Coordinator . Conditional Use Permit General Information Applicant 60 Day Rule Requested Action location and Size Tiller Corporation The application has been deemed complete as of June 18,2007. The City must take action by October 18, 2007. Conditional Use Permit approval Approximately 19.53 acres west of Proctor Rd, immediately south of the existing Tiller gravel operation. location Existing Use land Use Plan Designation Current Zoning Subject Undeveloped Mining Ria Property North Mining Mining Ria (ME) South Single Family Rural Residential Ria s: \ Council\Rebecca \ Tiller CUP.doc East West Single Family Mining Rural Residential Mining R1a R1a (ME) Overview The applicant is requesting CUP approval to do the following: 1. Remove an existing deposit of sand and gravel and process it into construction aggregate 2. The property will be leased for 10 years starting in July 2007 3. The applicant is estimating that mining will start in 2-3 years and that it will take between 3-5 years to remove the material and restore the area 4. The property will be stripped in 2 phases going from East to West 5. Material will be conveyed from the site, not hauled 6. The rock crusher will be no closer than 600 ft to adjacent residential properties. Applicable Regulations Conditional Use Permit The issuance of a Conditional Use Permit can be ordered only if the use at the proposed location: 1. Will not endanger, if!jure or detnmentalIY affect the use and ef!Jqyment of other properry in the immediate viciniry or the public health, scifery, morals, comftrt, convenience or general weifare of the neighborhood or the ciry. 2. Will be consistent with the comprehensive plan. 3. Will not impede the normal and orderlY development and improvement of surrounding vacant properry. 4. Will be served adequatelY fry and will not adverselY affect essential public facilities and services including streets, police and fire protection, drainage, refuse disposal, water and sewer !ystems, parks and schools; and will not, in particular, create trtiflic congestion or intetjerence with traffic on aqjacent and neighboring public thoroughfares. 5. Will not involve uses, activities, processes, materials, equipment and conditions of operation that will be detrimental to atry persons or properry because of excessive traffic, noise, smoke, fumes, glare, odors, dust or vibrations. 6. Will not result in the destruction, loss or damage of a natural, scenic or historic feature of mqjor importance. 7. Will fullY complY with all other requirements of this Code, including atry applicable requirements and standards ftr the issuance of a license or permit to establish and operate the proposed use in the ciry. If denial of such a permit should occur, it shall accompany recommendations or determinations by fIndings or a report stating how the proposed use does not comply with the standards set forth in Section 30-654. In the review of the standards for CUP as outlined, it appears that the request is consistent with all of these standards. S: \Council\Rebecca \ Tiller CUP.doc Analysis Gravel Mining is an intense land use that, unavoidably, impacts adjacent properties, including impacts from noise, dust, traffic, and vibrations. To combat these negative externalities, a program of education, long range planning, and site improvements is typically employed. In this instance, the following support Mining on the subject property. Education: The applicant conducted several preliminary public meetings over the last 12 months to get information out to the most affected residents. Staff and the applicant have been available to address questions and concerns prior to the public hearing process. Long Range Planning: The 2004 Comprehensive plan includes the subject property: The northern % is guided for mining, and the southern % is guided for open space. Mining is proposed for the northern % only. Site Improvements: The mining operation will include several processes to reduce the negative impacts. The material excavated will be conveyed to the sorting facility, reducing truck traffic. The internal roads and accesses will be watered to reduce dust. As mentioned above, the southern 20 acres (approximate) will be retained as open space; mining activities will not come closer than 500 feet to the residential homes in Ridgewood. Comprehensive Plan The proposed use of the land is consistent with the 2004 Comprehensive Plan. Recommendation Staff and Planning Commission recommend approval of the Conditional Use Permit, subject to the conditions outlined above. Action Motion by _ Second by _ Vote Follow Up s: \Council\Rebecca \ Tiller CUP.doc I I I I I I I I I I I I I I I I I I I I I Au~ust 2006 I I TILLER CORPORATION , APPUICA TION FOR A CONDITIONAL USE PERMIT FOR I MINERAL EXCAVATION ELK RIVER, MINNESOTA ''6 }1510" Consulting Civil Engineers FILE COpy Sunde Engineering, PLLC. 10830 Nesbitt Avenue South. Bloomington, Minnesota 55437-3100 Phone: (952) 881-3344. Fax: (952) 881-1913 · E-mail: info@sundecivil.com I I I I I I I I I I I I I I I I I I I TILLER CORPORATION APPLlC~ TION FOR A CONDITIONAL USE PERMIT FOR MINERAL EXCAVATION ELK RIVER, MINNESOTA I. INTRODUCTION Tiller Corporation (Tiller) and its operating division Barton Sand & Gravel Co. are requesting a Conditional Use Permit for Mineral Extraction on a parcel of land located in Elk River. The property is located immediately adjacent to an existing aggregate mining facility also operated by Tiller. The property encompasses approximately 36.6 a~res. The northern 19.53 acres are proposed to be mined. Figure 1 illustrates the project site with respect to the current Tiller mining facility. II. SIT~ INFORMATION 1 .) Legal Description of Property: Northeast 1/4 of the Southeast 1/4 Section 21 Township 33 North Range 26 West, west of public roadway, Except Parcel 27, Sherburne County ROW Plat Number 25. 2.) Name and Address of Operator Tiller Corporation 7200 Hemlock Lane, Suite 200 P.O. Box 1480 Maple Grove, MN 55311-6480 (763) 425-4191 3.) Name and Address of Property Owner Walter O. Malmstrom 71 Fir Street Mahtomedi, MN 55115 4.) Names and addresses of all a~jacent land owners within 350 feet of site See attached Exhibit 1. Page 1 of 1 0 I I I I I I I I I I I I I I I I I I I ,------- I I I I I I I I I I I I I I I I I I I I r----~ r- --- I II I II I II I II I II IEXISTING PARK PROPOSED MINING SITE H 600 I SCALE o 600 1200 I FEET IN FIGURE 1 PROJECT SITE LOCATION I I I I I I I I I I I I I I I I I I I 6.) 7.) 8.) 5.) Purpose of Extraction: The purpose of the extraction is to remove an existing deposit of sand and gravel and process it into construction aggregate. The construction aggregate will serve the growing needs of Elk River and the surrounding area. Mining and reclamation of the site will improve end use grades associated with the existing mining facility. Estimated Time Required to Complete the Proposed Extraction: Proposed extraction is estimated to be completed within ten years. The duration of mining activities is approximate only and is dependent upon market demand. Transportation Routes: Material from the property will be transported by conveyor to the operations area on the existing Tiller facility. The operations area is located on the western portion of the existing Tiller facility. Traffic from the operations area will access the new alignment of County Road 33. The majority of traffic generated from the existing operations area heads east towards US Hwy 169. a. Physical relationship of site with respect to the community. The site is centrally located within the City of Elk River and immediately west of Proctor Rd. N.W. Figure 2 illustrates the site location with respect to the City of Elk River. b. Site analysis: The site is bounded on the north and west by the existing Tiller mining facility. After the area to be mined is stripped, mining will commence from the floor of the existing mining operation to the south and east into the Malmstrom property. The extraction and processing equipment will be located 70-100 feet below the surrounding topography which will minimize noise and dust emissions from the site. The existing terrain is irregular. The northeastern 7 acres of the proposed mining area are wooded. The remaining portion of the proposed mining area is grassland and open space. The National Wetland Inventory Map for the parcel indicates that th4re are no wetlands on the property. The elevation of the site varies from about 1100 to 1080 feet above mean sea level (msl.). Final reclamation activities will Page 3 of 10 I I I I I I I I I I I I I I I I I I I ~ ~ m ~ ~ ~ ~ . II~. I ~. ~ ~ ~ ~ ~ I ~ j J ~ . . II. ~ ~ I j ~ ~ . ~ I~ II ..~ ~ ~ J . d J . I ~ d I j I ~ ~ I d I ~ j ~ ~ J . d I i ~ . ~ j I ~ d II m ~ -l:::J~ ~ /' '~! \I... 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( II I I FIGURE 2 SITE LOCATION WITH RESPECT TO CITY OF ELK RIVER I I I I I I I I I I I I I I I I I I I 9.) . - I leave the site at an eleviation ranging from 1050-1070 feet above msl. The tops o~ the sides lopes along the eastern and southern portions of the property will match the existing grade at the perimeter of the mining limits which are at approximately 1 080-1 090 feet above msl. Figure 3 is a U.S.G.S. Quad map excerpt that illustrates the site setting. c. Estimate of Quantity of Material to be Mined: The estimated net quantity of material to be removed from the property is between 300,000 and 400,000 cubic yards. This does not include topsoil or overburden. d. Depth of Water Table: The depth of the water table was identified during the Elk River Gravel Mining District EIS process. The water table ranges from about 930 feet above msl in the northwest corner of the site to about 925 feet above msl in the southeast corner of the site. Groundwater flow direction is to the southeast. The elevation of the water table corresponds to approximately 160 feet below existing grades, 60 feet below excavation grades and 120 feet below reclamation grades. e. Average thickness of overburden The average thickness of overburden is estimated to be 20 feet. Plan of Operation: The plan of operation is to strip the overburden, utilizing some of the material to create a perimeter screening berm along the eastern portion of the proposed mining area. After the overburden has been stripped, material will be excavated starting from the floor of Tiller's existing operation moving from the north to towards the south and lor from the west to the east. This will keep all mining and processing equipment recessed 70-100 feet below the surrounding grade. This will minimize visibility as well as noise and dust emissions. Crushing and screening will take place throughout the mining operation. Processing equipment will generally move along with the progression of the active face. Conveyors will be used throughout the Page 5 of 10 I I I I I I I I I I I I I I I I 1000 0 1000 2000 . . SCALE IN FEET I I I H FIGURE 3 USGS QUAD MAP EXCERPT I I I I I I I I I I I I I I I I I I I , site to convey material from the active face to the processing equipment and to the operations area established at Tiller's existing facility. There will be no water supply well or buildings constructed in association with this permit. No explosives will be used at the site. 10.) Drainage, Erosion Control, Sedimentation, Dust, Access Control and Security: Surface water drainage will be directed to low areas on the adjacent Tiller mining operation. Collected surface water infiltrates into the underlying soils and/or evaporates. Surface water drainage will not be directed off the Tiller site. Sedimentation may occur in the temporary ponding areas. These ponds Gan be readily cleaned out by on-site equipment. The site will operate under a Minnesota NPDES permit for gravel mining facilities and a Storm water Pollution Prevention Plan will be prepared for the site as required by the NPDES permit. Erosion of finished slopes will be minimized by backfilling to a minimum slope of 4: 1 and seeding and mulching in accordance with the Reclamation Plan. Dust control will consist of watering on-site gravel haul roads as needed. Conveyors will be used within the site, minimizing truck traffic on internal haul roads. Perimeter berms will also limit dust movement from the site. Access to the site will be controlled through Tiller's existing facility which consists of a combination of locking gate, berms, signs and fencing. Additional fencing will be installed along the south and east sides of the proposed mining operation just outside of the mining limits. 11 .) Restoration Plan Because the site is relatively small, it will be mined in one phase and restored in one phase. Reclamation activities at the site will consist of backfilling, grading, and seeding. Final grades will range from 1 % to 25 %. Final restoration grades are shown on the Reclamation Plan, Sheet C3. Page 7 of 1 0 I I I I I I I I I I I I I I I I I I I 1 .) 2.) 3.) 4.) Topsoil shall be placed on graded areas to be reclaimed. The area shall be seeded within 6 months ofl completing the backfilling. Topsoil will come from on-site sources, and be placed in a layer that is a minimum of 3" thick in accordance with the city ordinance. After placement of topsoil is complete, the area will be seeded and mulched according to Minnesota Department of Transportation (MnDOT) Standard Specification No 3876 and 3882. The seed used shall be MnDOT seed mixture 250. The mulch will be Type 1 mulch as specified above. III STANDARDS Boundary: Extraction operations shall be conducted within the confines of the boundaries indicated within this application. Setbacks: Site setbacks will be fifty feet from property lines and right-of-ways that are not adjacent to other areas where mining is allowed. The fifty-foot setback is applicable along Proctor Avenue. Fencing: Fencing will be installed along the south and east sides of the proposed mining operation, just outside of the mining limits, to prevent unauthorized access. Appearance and Screening: All equipment will be kept operational. Abandoned equipment and rubbish will be periodically removed from the site. Within 3 months after termination of mining, or within 3 months after termination of the extraction license, all buildings and structures incidental to extraction operations will be removed. The site will be graded in accordance with the reclamation plan. A screening berm will be constructed, seeded, mulched and maintained along the eastern boundary. The screening berm will be removed as part of final resto~ation. Existing trees will provide screening to the south and sollthwest. Page 8 of 10 I I I I I I I I I I I I I I I I I I I 5.) Operating Standards: a. Noise: The mining operation will be operated in compliance with all State noise standards. b. Hours: Mining and crushing will be conducted between 7:00 a.m. to 7:00 p.m. Monday - SCiiturday. c. Explosives: There will be no explosives used at this site. d. Fugitive Dust: Fugitive dust will be minimized by hard-surfaced roads, recessed operations, and use of conveyors. Internal haul roads will be watered as needed. Fugitive dust will not exceed air pollution standards established by the Minnesota Pollution Control Agency. e. Water Pollution: The site will be operated in compliance with all applicable Minnesota Pollution Control Agency and Department of Natural Resources standards. A National Pollution Discharge Elimination Permit (NPDES) will be obtained for the site. Any fuel storage on site will be in approved, double-walled storage tanks. f. Topsoil: All topsoil will be retained on the site until the completion of restoration. Topsoil will be used to create screening berms. The berms will subsequently be removed as part of the reclamation process. g. Slopes: The active mining face yvill be sloped at approximately 1.5: 1. Reclaimed slopes will b$ backfilled to a maximum slope of 4: 1 Page 9 of 10 I I I I I I I I I I I I I I I I I I I 6.) Reclamation Standards a. Schedule: Reclamation will occur upon completion of mining activity. Reclamation will be completed within one year of final extraction activity. b. Slopes: Slopes will be reclaimed in accordance with the reclamation plan. Finished slopes will not exceed 4: 1. c. Cover and Planting: A minimum of 3" of topsoil will be placed over reclaimed slopes. The slopes will be seeded in accordance with the reclamation plan. The vegetation will be periodically inspected to insure that it has become self-sustaining. d. Slopes to Water Bodies: There will be no created water bodies on this site. e. Water Bodies: All water bodies resulting from extraction - for example temporary storm water ponding areas, will be removed as part of final reclamation. IV CERTIFICATION I hereby certify that this plan, specification of report was prepared by me or under my direct supervision and that I am a duly Registered Engineer and duly Registered Geologist under the laws of the State of Minnesota. Kirsten Pauly, PE, PG Reg. No.21842 Date 8/31/06 Page 1 0 of 1 0 I I I I I I I I I I I I I I I I I I I EXHIBIT 1 PROPERTY OWNERS LIST I I I I I I I I I I I I I I I I I I I PLANS - - - - - - - - - - - - - - - - - - - ~ oX ~ ~ ~ j >' _____ -.J' X[; \ ----- \ ~\ X~ I =]l Ir= ,.. o xg ~ ::; X ~ ~ ~ ~ / l } /' / / g i ~ ~x ~ -if r' ~ , X ' \ r > 5 ;;j ~ \ \\ n ~ [ ~ ~ ~ ~ g" g I ~ -0;;:: :U):> or -0;;:: C'lUl :u-i -i:U -<0 ;;:: ~r x ~ (Jl o. 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'-, ....~"... ...."1:... 2 '---' $ :=- ~ ~~ir .~ " n: .il. ~ll'~ 5~ J ~~~ :at~~8 ..~ ~ ;;jll:~ '~r ~i ~ . .~ i ~ .. ~ U :~~ ~~ ~ ~ ~ :~I ~i: ~i ~~~ h I !~ ~~~ il S ~; i1i~~ ," ~~ B~~ ~ l~ ~~~ P' : a ~ '" 11 "'.." ("'l , g m '" >'" X '" <:0 0 'UJ; m.." :J:l co ("'l <: '-0 l!j~!~ "'0 J> rn 2~ "'0 :::! C S;~ .'" zo 0 r- p~l~~ s: z'" :J:l r- -. " ~ 2-1 Z ",> J> m ~i~!~ CD ~ ."z -1 :J:l 0 >0 0 .t~i C")> LW 2 c ='z > ~c 2 EXHIBIT B August 1, 2007 13880 Highway 10 Elk River, MN 55330 (763) 241-2900. (800) 438-0578 Fax. (763) 241.2910 Sherburne County PLANNING & ZONING ADMINISTRATION Mike Caron PO Box 1480 Maple Grove, MN 55311 Dear Mr. Caron, In response to your request for an on-site inspection and a review of the trees along Proctor Road in Section 21, T33, R26 in Elk River, I've summarized my findings and recommendations below, based on our July 31 on-site meeting. As you had arranged, a line was staked back from the road to show where the desired buffer of trees and vegetation would be preserved. Per the objectives stated, any tree within than buffer area would want to be left in good condition without incurring any disturbance/damage from upcoming excavation, grading, oak wilt, tree removal, etc. behind the buffer line. With this in mind, on July 31 st, I flagged an orange ribbon line delineating where disturbance should be avoided to ensure that root systems from trees inside the buffer area be protected. Much of this flagged line is just beyond the staked line. During my inspection, I also looked for potential oak wilt infection centers that are active. One site was found that appears to be active oak wilt. It is located on the southern most end of the woods and on the western side ofthe wood line, along the field. If oak wilt suppression work involving vibratory plowing is deemed necessary (per your arrangements with the City), I've enclosed a list of consultants you can contact to obtain a proposal for doing this work. Regarding the orange flagged line, itwould be recommended that any tree removal work or grading work near this line be done during the fall or winter months to avoid starting new oak wilt. Any work during the April, May, June, or early July period would not be recommended near this buffer line. Due to the nature of northern pin oak and white oak being more sensitive to root disturbances than most other tree species and that much of this forest was comprised of oak trees, the area was flagged to reflect this sensitivity and to reflect the larger driplines of some of the mature trees inside the buffer area. If you have any further questions, please let me know. Thank you. ~espectfJlllY~, ... ~. /~ . .L.-~~ TIm Edgeton / Forest and Parks Coordinator Sherburne County CITY OF ELK RIVER AGREEMENT FOR ISSUANCE OF CONDITIONAL USE PERMIT FOR MINERAL EXCAVATION THIS AGREEMENT, made and entered into this _ day of 2007, by and between the CITY OF ELK RIVER, a municipal corporation organized under the laws of the State of Minnesota (City), and Tiller Corooration, a Minnesota corporation, hereinafter referred to as (Operator); WITNESSETH: WHEREAS, Operator has made application to City for approval of a conditional use permit to operate a gravel mining operation within the City on property legally described as follows: The Northeast % of the Southeast % of Section 21, all in Township 33 North, Range 26 West, west of public roadway, Except Parcel 27, Sherburne County, Minnesota. (the Property); and WHEREAS, the City of Elk River Planning Commission and City Council have held hearings on Operator's request for a conditional use permit, at which hearings all citizens of the City of Elk River and other interested parties have had the opportunity to be heard on the application; and WHEREAS, the City Council by motion adopted on this _ day of . 2007, a conditional use permit for the operation of a gravel mining operation (the Operation) on the Property, subject to certain conditions, including that Operator enter into a conditional use permit agreement with City so as to fully comply with the City's Mineral Excavation, Zoning, and other applicable ordinances; and WHEREAS, the City's Zoning Ordinance requires that a conditional use permit be issued and that a conditional use permit agreement for mineral excavation be entered into. Page 2 NOW, THEREFORE, in consideration of the premises and the mutual promises and conditions hereinafter contained, it is hereby agreed as follows: 1.) Entire A2Teement- Except as otherwise provided herein, this Agreement shall constitute the Conditional Use Permit for the Property and, to be executed by City and Operator, shall govern the parties' rights, responsibilities, and obligations with respect to the Operation, subject to the compliance by all parties with applicable city ordinances and state and federal laws. 2.) Warrantv of Onerator- Operator hereby warrants and represents to the City, as inducement to the City's entering into this agreement, that the Operator is the fee owner of the Property. 3.) Operation: (01) (02) (03) (04) Conditions- The following general conditions shall apply to the This Conditional Use Permit authorizes mineral excavation (gravel) from the Property. All mineral excavation and processing operations on the Property shall comply with the City's Mineral Excavation, Zoning and other applicable ordinances; with the terms of this Conditional Use Permit agreement and the license agreement to be executed by the City and Operator; with the City of Elk River's Environmental Impact Statement on Mineral Excavation; and with the application materials and plans submitted by the Operator, which plans and materials are the basis for the City's approval of the Conditional Use Permit. The Operator shall orally notify the City of any violations of this permit within 24 hours and follow this with notification in writing within four (4) working days of the violation. The Operator shall notify the City annually in writing of the total area and amount of material mined and projected estimates of area and amount of material to be mined in the following year. This is to be done at time of license renewal. The license shall be renewed annually and shall run from June 1st through May 31st. The annual license fee is that which is specified by the Elk River City Council at time of renewal. This license fee is not in lieu of gravel tax collected by the County, a portion of which the City receives. Page 3 (05) Violations of this Conditional Use Permit may result In suspension or revocation. (06) The City Environmental Administrator and/or his/her agents shall be permitted to inspect the Operation for compliance with the conditions of this permit during normal hours of operation. (07) The City's approval of this Conditional Use Permit is subject to the approval of appropriate permits by other governmental agencIes. (08) No explosives shall be allowed for this Operation. (09) Any areas where obvious danger to the public exists shall be controlled by a four- foot- tall fence with support posts every ten feet. (10) Reclamation a. Reclamation shall be implemented on an annual basis pursuant to the reclamation plans submitted by the Operator. b. Each year a plan for that year's reclamation shall be approved by the Environmental Administrator prior to issuance of the mineral excavation license. c. A $5,000 letter of credit, bond or other deposit approved by staff shall be required prior to the issuance of the annual license to cover the forth coming year's reclamation. d. The reclamation shall include topsoil from the site being preserved and put back into place after mining. e. The vegetation established for reclamation must be maintained until it is self-sufficient. f. Contours, finished grades, details of erosion control methods, and settling ponds, shall comply substantially with the plans submitted and the City ordinance at the time of reclamation. (11) Groundwater protection measures shall include: Page 4 a. Extraction and crushing operations shall be maintained at a minimum of 4 feet above the water table. Approval to excavate deeper shall require an amendment to this Conditional Use Permit. b. The Operator shall fue with the City an Emergency Spill Response Plan. The Operator shall adhere to these plans in the event there is a spill. c. The Operator shall provide the Fire Department with a copy of their flammable or hazardous materials. d. Fuel tanks shall be above ground, registered with MPCA and comply with all MPCA requirements. e. All instances that have the potential to adversely affect groundwater, including, but not limited to spills, shall be verbally reported to the City within 24 hours. This verbal notification shall be followed up in writing within four (4) working days. f. Appropriate Water Appropriation Permit (s) from the Department of Natural Resources (DNR) must be obtained. g. Water usage by mmmg activities shall not adversely affect adjacent residential wells. Mitigation measures may include, but are not limited to, curtailing of pumping activities until water levels return. h. If wells are intended for this site meetings with the City and the DNR will be conducted prior. 1. Routine vehicle maintenance shall be performed using Best Management Practices (BMPs). A hazardous waste license from the MPCA will be required as deemed necessary. All waste fluids will be contained, cleaned up, and recycled or disposed of according to appropriate MPCA regulations. Spills must be reported to the State Duty Officer as required. (12) Wetlands a. All wetland impacts must be reviewed under the criteria of the Wetland Conservation Act (WCA). T5 b. All storm water associated with mining activities must receive pre-treatntent (where necessary) prior to release to natural wetlands or off-site. c. Best management practices will be used to protect natural wetlands. d. Mining activities shall be adjusted as necessary to avoid negative affects on wetlands, including a decrease in water levels. (13) Oakwilt Cutting of trees between April 15 and July 15 is prohibited. The Operator shall take other measures deemed appropriate by the Sherburne County Forester to control oakwilt, such as, but not limited to: debarking or destroying fallen diseased trees prior .to April 15th, not leaving roots exposed and avoiding mechanical damage on remaining trees. (14) Dust Control a. A permit from MPCA for air emissions shall be obtained by the Operator and the particulate emission standards shall be met by the Operation. b. All equipment shall be located as to reduce dust to adjacent residenti~l properties. c. Water, but no chemical agents, shall be used to control dust as necessary. d. The City reserves the right to require additional measures to be taken if warranted by dust problems including, but not limited to, reducing stock pile heights. (15) Traffic a. All traffic associated with the operation shall only use County Road 33 :back and forth to U.S. Highway 169. Except for localiz~d jobs, no traffic from this Operation shall use Proctor Avenue or County Road 33 to the west of the site. Operator shall post notice of these requirements at the exit from their site. Failure to control traffic from I pige 6 this Operation hall constitute a violation of this Conditional Use Permit. b. The location of the access to the site shall be determined by the Sherburne County Engineer. An access permit from Sherburne C~unty may be required of the operator. (16) Noise a. Noise from screening and crushing associated with this Operation shall be controlled by location on the site, the placement of stockpiles, type of equipment and ultimately by placing them in soundproof buildings, if determined necessary by noise monitoring conducted in accordance accepted scientific standards. b. Mining equipment shall be fitted with strobe light back- up alarms for use during non-daylight hours and broad band sound back-up alarms for use during daylight hours. c. A turnaround will be provided within the pit so that trucks will not need to back-up. d. The state's noise level standards for daytime and nighttime hours must be adhered to. e. Noise monitoring must be completed as deemed necessary. Monitoring results shall be supplied to the Environmental Administrator. (17) Hours of Operation. All mineral excavation and processing activities shall be conducted between the hours of 7:00 AM and 7:00 PM, Monday through Saturday unless prior approval is given by the Environmental Administrator and/or his/her agents. (18) Lightin2'. i Lighting from the Oper~tion shall be directed away from public right-of-way and nearby or adjacent residential property. Glare, whether directed or 'reflected as different from general illumination, shall not be visible from beyond the limits of the immediate site. All sources of artificial lights shall be so fixed, pi" 7 directed, designed, or sized, that the minimum subtotal of their illumination shall not increase the level of the illumination on any nearby residential p~operty for more than .1 foot candles in or within 25 feet of a d\flelling or more than .5 foot candles on any part of the property. 1 (19) Storae-e The piling, storing or keeping of old machinery, junk, debris, or abandoned motor vehicles, shall be prohibited on the site. (20) Vibration Mining activities shall not cause excessive vibration off-site. (21) Mechanism for responding to complaints. Representatives of the Operation shall make themselves available to address complaints. A plan to deal with the complaint shall be developed and implemented. Operator will also follow up with tihe complainant and all appropriate documents copied to the City within one (1) week. 4.) General Provisions - (01) Permits - Operator agrees to comply with all of the provisions hereof and agrees to save and hold the City harmless from any and all claims or actions arising from the Operations of the Operator on the Property. (02) Bindine- Effect - The terms and prOVISIons hereof shall be binding upon, and inure to the benefit of the heirs, representatives, successors, and assigns of the parties hereto and shall be binding upon all future owners of all or any part of the Operation and shall be deemed covenants running with the land. This Agreement shall be placed of record so as to give notice hereof to subsequent purchasers and encumbrances of all or any part of the Property, and all recording fees, if any, shall be paid by the Operator. (03) Severable - In the event that any portion of this Agreement shall be held invalid for any reason;, the same shall not affect any respect whatsoever the validity of the riemainder of this Agreement. (04) Waiver - Any waiver, whether express or implied, by any party of a breach of any provision of this Agreement will not operate as or be construed to be a waiver of any subsequent breach of this Agreement. I prs (05) Notices - All notices and demands specified herein shall be deemed appropriately and tim~ly given when delivered personally or deposited in the United StateS mail to the addresses hereinafter set forth by certified mail (return I1eceipt requested). The addresses of the parties hereto are as follows u~til changed by written notice given as above: If to the City at: City Jf Elk River ATTN: City Environmental Admin. 13065 Orono Parkway Elk Rliver, MN 55330 If to the Operator at: Tiller! Corporation I 7200 iflemlock Lane, Suite 200 P.O. Box 1480 Maple Grove, MN 55311 (06) Incorporation bv Refelience- All plans, special prOVISIons, proposals and specifications, $ubmitted pursuant to this Agreement shall be and hereby are made a part of this Agreement by reference as fully as if set forth herein in fu~. IN WITNESS WHEREOF, the City and Operator have caused this Agreement to be duly executed on the! day and year first above written. CITY OF ELK RIVER By: Its: Mayor By: Its: City Administrator 9 OPERATOR: TILLER CORPORATION By: By: . . .