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3.4. SR 07-07-2008Q ' ~l ~j Elk REQUEST FOR ACTION River To Item Number Ci Council 3.4. Agenda Section Meeting Date Prepared by Consent July 7, 2008 Rebecca Haug, Environmental Administrator Item Description Reviewed by Old City Dump Reviewed by Action Requested Staff recommends the following: Annual monitoring continues until future plans for the site are known or no Volatile Organic Compounds (VOC) are detected. 2. Results of the private well testing continue to be sent to the individual residence. Background/Discussion Liesch Associates, Inc. completed the yearly groundwater sampling on June 6, 2008. Samples were taken at monitoring wells MW-2 and MW-3 within the dump. The Vandenberg and Hipsag residential wells located west and southeast of the dump were not tested. The Kirkeide and Brown residences, formerly located south of the dump, no longer exist. MW-1 formerly located north of the dump was sealed in 2002 when a parking lot for the city park was constructed in the area where the well was located. FINDINGS ^ Volatile Organic Compound (VOC) detections were at a low level in MW-2. 1,1,2,2- tetrachloroethylene (1'CE) was identified at 1.1 parts per billion (ppb) in MW-2. The PCE level detected in MW-2 is consistent with historic low PCE concentrations. ^ Low levels of Trichloroethene (TCE) were detected at MW-3. The TCE was identified at a level of 1.9 ppb. TCE was not detected in 2007 or 2005 but has been historically detected since 1989 at decreasing levels. ^ VOC concentrations at the monitoring well locations continue to be stable and consistent with previous samplings of these wells. ^ The concentrations axe below current Minnesota Department of Health (MDH) Health Risk Limits (HRLs) for drinking water. PCE and TCE levels are currently set at 5 ppb. Attachments ^ June 2008 Groundwater Monitoring Results for the Old City Dump -Tom C. Johnson, Leisch Assoc., Inc. -June 23, 2008 C:\Documents and Settings\jmiller\Local Settings\Temporary Internet Files\OLK3E\Action Requested (2).doc QCtloll Motion by Second by Vote Follow Up C:\Documents and Settings\jmiller\Local Settings\Temporary Internet Files\OLK31/\Action Requested (2).doc LI'e HYDROGEOLOGISTS ^ ENGINEERS ^ ENVIRONMENTAL SCIENTISTS June 23, 2008 Ms. Rebecca Haug City of Elk River Environmental Division 13065 Orono Parkway Elk River, MN 55330 RE: June 2008 Groundwater Monitoring Results Old City Dump, Elk River, Minnesota Dear Rebecca: Enclosed please find the 2008 annual water quality data for the Old Elk River Dump site located southeast of the City of Elk River (Figure 1). The groundwater sampling was completed on June 6, 2008 by Liesch Associates, Inc. (Liesch). Sample locations included monitoring wells MW-2 and MW-3 near the former City dump site (Figure 2). MW-1 formerly located north of the dump was sealed in 2002 when a parking lot for the city park was constructed in the area the well was located. Over ten-years of water quality monitoring at this upgradient well location evidenced no detections of VOC's so the well was not replaced. Laboratory results of the June 2008 sampling event (Table 1) indicate low level VOC detections of Tetrachloroethene (PCE) in MW-2 and Trichloroethene (TCE) in MW-3. PCE was detected in MW-2 at a level of 1.1 parts per billion (ppb) and TCE was detected in MW-3 at a level of 1.9 ppb. The VOCs detected during this recent sampling event are consistent with historic low concentrations found in groundwater samples collected from MW-2 and MW-3. Water level data indicates that the water table at the site remains consistent with water levels recorded over that last 7 years (attached Well Hydrograph). Groundwater flow direction could not be calculated as a minimum of three monitoring points are needed for this determination and MW-1 was sealed. Historic groundwater flow direction for the site has been southwesterly in direction towards the Mississippi River. Presumably this has not changed. The VOC concentrations at the monitoring well locations (MW-2 and MW-3) have been relatively stable over the last few monitoring events. TCE was not detected in MW-3 the previous year (2007) or in 2005 but it has been historically detected since 1989 at decreasing levels. PCE levels detected in MW-2 have remained relatively static since 1989. PCE .and TCE concentrations are currently below Minnesota Department of Health (MDH) Health Risk Limits (HRLs) for drinking water. MDH HRLs for PCE and TCE are currently set at 5 ppb. www.liesch.com LIESCH ASSOCIATES, INC. ^ 13400 15TH AVENUE NORTH ^ MINNEAPOLIS, MN 55441 ^ 763/489-3100 ^ FAX: 763/489-3101 Page 2 June 23, 2008 Private residence wells remaining in the area were not tested during the last two sampling events (2007 and 2008). Please feel free to contact me at 763-489-3174 or John Lichter at 763-489-3120, should you have any questions. Sincerely, LIESCH ASSOCIA ES, INC. Tom C. Johnson ~ Environmental Sci ntist Attachments: Figure 1 -Site Location Map Figure 2 -Existing Conditions Map Table 1-~Comprehensive Water Quality Data Chart 1-Water Level Data Laboratory Report -June 2008 W:\env\79019\elk river Itr 06-08.doc www.liesch.com THE LIESCH COMPANIES ^ MINNEAPOLIS, MINNESOTA ^ MADISON, WISCONSIN ^ PHOENIX,ARIZONA S U b O U O ~o .y OJ rn 0 rn '> d 3 li 0 N M N ~ ~ o y ~ ~~ ~ W ti ` - -_.-"-~.-.. v.-... 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MW-2 WL = 32.56' EL = 60.26' ,~: °:, ~~ J F ~ ~. \1 ~i ~ 4 ti, .- }~ Elk River -Former City Dump Monitoring Well Location Map June 08 Figyu~ re YfG a z O F U H W H A ~ w ~~~ a A Fay F a d' x W W W x W a 0 U a z ~z N 0 ~F tiW W A x ~' # ~ , o r ~ .~ ~n x a ~ ~~ "' ~ ~ O p ~O o0 ^, O O O O 00 0o M O . ~ ~ ~ ~ ~ ~ p ,--~ ~ ~ ~ °~° N N ~ ~ ~ '~ i%1 ~ O M n N ~ ~ O N ~ ~ ' Q ~ ~ ~i N ~ + ." ; ~ w "' ~ ~ ~~ ~~ ~~ ~~ ° a. a x ~ ~ o ~ c ~ ~a on ~ ~ i '~ ~ >~ i b v M ~O N O o~ d: oo M ~ ~ ~t ~ N ~t O~ M ^, ,~ „~ -~ ~ ~ M cn N --~ N N N ~ ~ a. ~ ~ N `""' O ' V 0 ~ ~ Q Y ~ - ~. ~ ' C~ ~ ~ q U ~y ~ = M ~ ~~i ~ ~; ~ ~ O~ O~ O N N N M ~ V~ ~ 00 00 •--~ N O O \O oo - N N d' V7 ~ y ~ 00 00 O~ O\1 O~ O~ O~ 01 ~ Q~ 01 ~ OO O` O O w Q v~ - ~ oo ~ ~ ~ ~ ~ v o0 0o i oo in c ~ ~ ~ l/') l~ ~ 00 a a `~ o ° ~ _ ~; _ ter, z xa -~~~ N b U ~ ~ 7 . 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N G .ty .--~ y Q~ ~ i a a` Q ~ ~ b a~ 0 -d a~ ~ ~ ~t ~ U ~ x ~ ~ ~ ~ U i ~ ~ N O O ~ O y .~ 3 00 ~ ~ ~ rn ~ ~" O p~ s~ O Q ~ O ~~ ~ ~ c~ w O "" ~ 6' ~ "Cf bA p Q U ~ ~ ~ •~ Q ~ N ~ ~ O ~ ~ 'o . o ~ W ~ ~ O "O U w H ~ '~ U U + y U a N ~ O ^d ~ w . .~ ~ ~ ~ ~ O ~, a U w L ~ b y~ ' ~ A U ~ ..G N ~ t. x ~ ~ ~ ~ U y ~ O N 'O c~ ~y~~ ~~~x ~~ ~ ~o~~ ~ ~~ ¢H~ ~~a~~ H O Z~--~c~ir;~r~ri.o~oo N M 3 3 3 l~ j~ ~ I T 00 0 0 N C "~ a A s. as W O c~ s`~. bA 0 ~, x a 3 ~ ° o ~ ~ ;aa~ ui uoi;enai~ LOOZ 9002 SOOZ ~OOZ £OOZ ZOOZ IOOZ OOOZ a 666 i 0 866I ~ 0 w L66t A 9661 S66i t66I £66I Z66i i66t 0661 6861 0 X ct O ~, on 0 3 .~ x 0 o, a~ 3 ~. Technical Services, inE. www.3egen d-gr~a~+up. corn June 20, 2008 Mr. Tom Johnson Liesch Associates, Inc. 13400 15th Avenue North, Suite A Plymouth, MN 55441 Work Order Number: 0803477 RE: Former Elk River Dump 88 Empire Drive St Paul, MN 55103 Tel: 651-642-1150 Fax: 651-642-1239 Enclosed are the results of analyses for samples received by the laboratory on 06/06/08. If you have any questions concerning this report, please feel free to contact me. All samples will be retained by LEGEND, unless consumed in the analysis, for 30 days from the date of this report and then discarded unless other arrangements are made. MDH Certification #027-123-295 Prepared by, LEGEND TECHNICAL SERVICES, INC 7.M: 4 t~ Terri Olson Client Manager II tolson@legend-group.com ~^'~ ~~s lllz! Elizabeth Derenne Report Reviewer ederenne@legend-group.com Legend Technical Services, Inc. The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. ~. ~ G N Technical Ser~c~s, Irtly. www.lsgend-~roup.corl~ 88 Empire Drive St Paul, MN 55103 Tel: 651-642-1150 Fax: 651-642-1239 Liesch Associates, Inc. Project: Former Elk River Dump 13400 15th Avenue North, Suite A Project Number: 79019.00 Work Order #: 0803477 Plymouth MN, 55441 Project Manager: Mr. Tom Johnson Date Reported: 06/20/08 ANALYTICAL REPORT FOR SAMPLES Sample ID Laboratory ID Matrix Date Sampled Date Received MW-2 MW-3 Trip Blank 0803477-01 Water 06/06/08 00:00 06/06/08 13:10 0803477-02 Water 06/06/08 00:00 06/06/08 13:10 0803477-03 Water 06/02/08 00:00 06/06/08 13:10 Shipping Container Information Default Cooler Temperature (°C): 0.7 Received on ice: Yes Temperature blank was present Received on ice pack: No Received on melt water: No Ambient: No Acceptable (IH/ISO only): No Custody seals: No Case Narrative: Methylene chloride was detected in the 8260 trip blank. The trip blank was analyzed directly following sample MW-3. The methylene chloride value was not detected in sample MW-3. The trip blank value does not appear to be due to system contamination. Legend Technical Services, Inc. The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 2 of 14 L Q Tecl~ncat Services, Inc. ww~at.[er~end-~roup.COt't"t 88 Empire Drive St Paul, MN 55103 Tel: 651-642-1150 Fax: 651-642-1239 Liesch Associates, Inc. Project: Former Elk River Dump 13400 15th Avenue North, Suite A Project Number: 79019.00 Work Order #: 0803477 Plymouth MN, 55441 Project Manager: Mr. Tom Johnson Date Reported: 06/20/08 VOC 82606 Legend Technical Services, Inc. Analyte Result RL MDL Units Dilution Batch Prepared Analyzed Method Notes MW-2 (0803477-01) Water Received:06/06/08 13:10 Sampled:06/06/08 00:00 1,1,1,2-Tetrachloroethane <1.0 1.0 0.083 ug/L 1 68F1013 06/10/08 06/10/08 EPA 82606 1,1,1-Trichloroethane <1.0 1.0 0.098 ug/L 1 " 1,1,2,2-Tetrachtoroethane <1.0 1.0 0.084 ug/L 1 " 1,1,2-Trichloroethane <1.0 1.0 0.15 ug/L 1 " 1,1,2-Trichlorotrifluoroethane <1.0 1.0 0.10 ug/L 1 " 1,1-Dichloroethane <1.0 1.0 0.094 ug/L 1 " 1,1-Dichloroethene <1.0 1.0 0.10 ug/L 1 " 1,1-Dichloropropene <1.0 1.0 0.099 ug/L 1 " 1,2,3-Trichlorobenzene <5.0 5.0 0.40 ug/L 1 " 1,2,3-Trichloropropane <2.5 2.5 .0.13 ug/L 1 " 1,2,4-Trichlorobenzene <5.0 5.0 0.52 ug/L 1 " 1,2,4-Trimethylbenzene <1.0 1.0 0.052 ug/L 1 " 1,2-Dibromo-3-chloropropane <5.0 5.0 1.2 ug/L 1 " 1,2-Dibromoethane (EDB) <2.5 2.5 0.10 ug/L 1 " 1,2-Dichlorobenzene <1.0 1.0 0.12 ug/L 1 " 1,2-Dichloroethane <1.0 1.0 0.084 ug/L 1 " " 1,2-Dichloropropane <1.0 1.0 0.13 ug/L 1 " 1,3,5-Trimethylbenzene <1.0 1.0 0.066 ug/L 1 " 1,3-Dichlorobenzene <1.0 1.0 0.094 ug/L 1 " " 1,3-Dichloropropane <1.0 1.0 0.074 ug/L 1 " 1,4-Dichlorobenzene <1.0 1.0 0.053 ug/L 1 " 2,2-Dichloropropane <5.0 5.0 0.23 ug/L 1 " 2-Butanone <20 20 0.58 ug/L 1 " 2-Chlorotoluene <1.0 1.0 0.077 ug/L 1 " 4-Chlorotoluene <1.0 1.0 0.059 ug/L 1 " Acetone <20 20 0.89 ug/L 1 " Ally/ chloride <5.0 5.0 0.28 ug/L 1 " Benzene <1.0 1.0 0.047 ug/L 1 " Bromobenzene <1.0 1.0 0.084 ug/L 1 " Bromochloromethane <1.0 1.0 0.075 ug/L 1 " Bromodichloromethane <1.0 1.0 0.13 ug/L 1 " Bromoform <5.0 5.0 0.074 ug/L 1 " Bromomethane <5.0 5.0 0.26 ug/L 1 " Carbon tetrachloride <1.0 1.0 0.074 ug/L 1 " Chlorobenzene <1.0 1.0 0.025 ug/L 1 " Chloroethane <2.5 2.5 0.26 ug/L 1 " Chloroform <1.0 1.0 0.098 ug/L 1 " Chloromethane <2.5 2.5 0.098 ug/L 1 " Legend Technical Services, Inc. The results in this report apply fo the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 3 of 14 Q TE'C~1C"lCc"3~ SE'~VIGt?S, t1C. www.legsstd-grdup.cnrn 88 Empire Drive St Paul, MN 55103 Tel: 651-642-1150 Fax: 651-642-1239 Liesch Associates, Inc. Project: Former Elk River Dump 13400 15th Avenue North, Suite A Project Number. 79019.00 Work Order #: 0803477 Plymouth MN, 55441 Project Manager: Mr. Tom Johnson Date Reported: 06/20/08 VOC 8260B Legend Technical Services, Inc. Analyte Result RL MDL Units Dilution Batch Prepared Analyzed Method Notes MW-2 (0803477-01) Water Received:06106/08 13:10 Sampled:06/06/08 00:00 cis-1,2-Dichloroethene <1.0 1.0 0.12 ug/L 1 BSF1013 06/10/08 06!10/08 EPA 82608 cis-1,3-Dichloropropene <1.0 1.0 0.11 ug/L 1 " Dibromochloromethane <2.5 2.5 0.084 ug/L 1 " Dibromomethane <2.5 2.5 0.14 ug/L 1 " Dichlorodifluoromethane <5.0 5.0 0.39 ug/L 1 " Dichlorofluoromethane <1.0 1.0 0.070 ug/L 1 " Ethyl ether <5.0 5.0 0.10 ug/L 1 " Ethylbenzene <1.0 1.0 0.055 ug/L 1 " Hexachlorobutadiene <10 10 0.58 ug/L 1 " Isopropylbenzene <1.0 1.0 0.068 ug/L 1 " m,p-Xylene <2.0 2.0 0.14 ug/L 1 " Methyl isobutyl ketone <5.0 5.0 0.13 ug/L 1 " Methyl tert-butyl ether <1.0 1.0 0.079 ug/L 1 " Methylene chloride <5.0 5.0 0.29 ug/L 1 " Naphthalene <5.0 5.0 0.38 ug/L 1 " n-Butylbenzene <2.5 2.5 0.094 ug/L 1 " n-Propylbenzene <1.0 1.0 0.079 ug/L 1 " " o-Xylene <1.0 1.0 0.074 ug/L 1 " p-Isopropyltoluene <2.5 2.5 0.087 ug/L 1 " sec-Butylbenzene <1.0 1.0 0.030 ug/L 1 " Styrene <1.0 1.0 0.072 ug/L 1 " tert-Butylbenzene <1.0 1.0 0.046 ug/L 1 " Tetrachloroethene 1.1 1.0 0.10 ug/L 1 " Tetrahydrofuran <20 20 0.76 ug/L 1 " Toluene <1.0 1.0 0.036 ug/L 1 " " " trans-1,2-Dichloroethene <1.0 1.0 0.14 ug/L 1 " trans-l,3-Dichloropropene <1.0 1.0 0.082 ug/L 1 " Trichloroethene <1.0 1.0 0.097 ug/L 1 " Trichlorofluoromethane <1.0 1.0 0.17 ug/L 1 " Vinyl chloride <1.0 1.0 0.10 ug/L 1 " Surrogate: 4-Bromotluorobenzene 92.1 80-125 % " Surrogate: Dibromofluoromethane 107 80-121 % " Surrogate: Toluene-d8 101 80-125 % " MW-3 (0803477-02) Water Received:06106/08 13:10 Sampled:06106/08 00:00 1,1,1,2-Tetrachloroethane <1.0 1.0 0.083 ug/L 1 BSF1013 06/10/08 06/10/08 EPA 82606 1,1,1-Trichloroethane <1.0 1.0 0.098 ug/L 1 " 1,1,2,2-Tetrechloroethane <1.0 1.0 0.084 ug/L 1 " 1,1,2-Trichloroethane <1.0 1.0 0.15 ug/L 1 " " Legend Technical Services, Inc. The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analyfical report must be reproduced in ifs entirety. Page 4 of 14 Technical services, Inc.. wwtiv,legertd group.cotl't 88 Empire Drive St Paul, MN 55103 Tel: 651-642-1150 Fax: 651-642-1239 Liesch Associates, Inc. Project: Former Elk River Dump 13400 15th Avenue North, Suite A Project Number. 79019.00 Work Order #: 0803477 Plymouth MN, 55441 Project Manager: Mr. Tom Johnson Date Reported: 06/20/08 VOC 8260B Legend Technical Services, Inc. Analyte Result RL MDL Units Dilution Batch Prepared Analyzed Method Notes MW-3 (0803477-02) Water Received:06/06/08 13:10 Sampled:06/06/08 00:00 1,1,2-Trichlorotrifluoroethane <1.0 1.0 0.10 ug/L 1 B8F1013 06!10/08 06/10/08 EPA 82606 1,1-Dichloroethane <1.0 1.0 0.094 ug/L 1 " 1,1-Dichloroethene <1.0 1.0 0.10 ug/L 1 " 1,1-Dichloropropene <1.0 1.0 0.099 uglL 1 " 1,2,3-Trichlorobenzene <5.0 5.0 0.40 ug/L 1 " " 1,2,3-Trichloropropane <2.5 2.5 0.13 ug/L 1 " 1,2,4-Trichlorobenzene <5.0 5.0 0.52 ug/L 1 " 1,2,4-Trimethylbenzene <1.0 1.0 0.052 ug/L 1 " 1,2-Dibromo-3-chloropropane <5.0 5.0 1.2 ug/L 1 " " 1,2-Dibromoethane (EDB) <2.5 2.5 0.10 ug/L 1 " 1,2-Dichlorobenzene <1.0 1.0 0.12 ug/L 1 " " 1,2-Dichloroethane <1.0 1.0 0.084 ug/L 1 " 1,2-Dichloropropane <1.0 1.0 0.13 ug/L 1 " 1,3,5-Trimethylbenzene <1.0 1.0 0.066 ug/L 1 " 1,3-Dichlorobenzene <1.0 1.0 0.094 ug/L 1 " 1,3-Dichloropropane <1.0 1.0 0.074 uglL 1 " 1,4-Dichlorobenzene <1.0 1.0 0.053 ug/L 1 " 2,2-Dichloropropane <5.0 5.0 0.23 uglL 1 " 2-Butanone <20 20 0.58 ug/L 1 " 2-Chlorotoluene <1.0 1.0 0.077 ug/L 1 " 4-Chlorotoluene <1.0 1.0 0.059 ug/L 1 " Acetone <20 20 0.89 ug/L 1 " Ally! chloride <5.0 5.0 0.28 ug/L 1 " Benzene <1.0 1.0 0.047 ug/L 1 " Bromobenzene <1.0 1.0 0.084 ug/L 1 " Bromochloromethane <1.0 1.0 0.075 ug/L 1 " Bromodichloromethane <1.0 1.0 0.13 ug/L 1 " Bromoform <5.0 5.0 0.074 ug/L 1 " Bromomethane <5.0 5.0 0.26 ug/L 1 " Carbon tetrachloride <1.0 1.0 0.074 ug/L 1 " " Chlorobenzene <1.0 1.0 0.025 ug/L 1 " Chloroethane <2.5 2.5 0.26 ug/L 1 " Chloroform <1.0 1.0 0.098 ug/L 1 " Chloromethane <2.5 2.5 0.098 uglL 1 " cis-1,2-Dichloroethene <1.0 1.0 0.12 ug/L 1 " cis-1,3-Dichloropropene <1.0 1.0 0.11 ug/L 1 " " Dibromochloromethane <2.5 2.5 0.084 ug/L 1 " Dibromomethane <2.5 2.5 0.14 ug/L 1 " Legend Technical Services, Inc. The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 5 of 14 L ~ G E NI d T~Chr~ic~l Services, ~l"!C. ~+wvv.legend-group.corn 88 Empire Drive St Paul, MN 55103 Tel: 651-642-1150 Fax: 651-642-1239 Liesch Associates, Inc. Project: Former Elk River Dump 13400 15th Avenue North, Suite A Project Number: 79019.00 Work Order #: 0803477 Plymouth MN, 55441 Project Manager: Mr. Tom Johnson Date Reported: 06/20/08 VOC 82608 Legend Technical Services, Inc. Analyte Result RL MDL Units Dilution Batch Prepared Analyzed Method Notes MW-3 (0803477-02) Water Received:06/06/08 13:10 Sampled:06/06/08 00:00 Dichlorodifluoromethane <5.0 5.0 0.39 ug/L Dichlorofluoromethane <1.0 1.0 0.070 ug/L Ethyl ether <5.0 5.0 0.10 ug/L Ethylbenzene <1.0 1.0 0.055 ug/L Hexachlorobutadiene <10 10 0.58 ug/L Isopropylbenzene <1.0 1.0 0.068 ug/L m,p-Xylene <2.0 2.0 0.14 ug/L Methyl isobuiyl ketone <5.0 5.0 0.13 ug/L Methyl tert-butyl ether <1.0 1.0 0.079 ug/L Methylene chloride <5.0 5.0 0.29 ug/L Naphthalene <5.0 5.0 0.38 ug/L n-Butylbenzene <2.5 2.5 0.094 ug/L n-Propylbenzene <1.0 1.0 0.079 ug/L o-Xylene <1.0 1.0 0.074 ug/L p-Isopropyltoluene <2.5 2.5 0.087 ug/L sec-Butylbenzene <1.0 1.0 0.030 ug/L Styrene <1.0 1.0 0.072 ug/L tert-Butylbenzene <1.0 1.0 0.046 ug/L Tetrachloroethene <1.0 1.0 0.10 ug/L Tetrahydrofuran <20 20 0.76 ug/L Toluene <1.0 1.0 0.036 ug/L trans-1,2-Dichloroethene <1.0 1.0 0.14 ug/L trans-1,3-Dichloropropene <1.0 1.0 0.082 ug/L Trichloroethene 1.9 1.0 0.097 ug/L Trichlorofluoromethane <1.0 1.0 0.17 ug/L Vinyl chloride <1.0 1.0 0.10 ug/L Surrogate: 4-Bromofluorobenzene 87.9 80-125 Surrogate: Dibromotluoromethane 104 80-121 Surrogate: Toluene-d8 100 80-125 1 B8F1013 O6/1D/OS 06/10/08 EPA 82606 1 ~ ~~ ~~ ~, 1 ~~ ~~ ~~ 1 ~~ ~ ~~ ~~ 1 ,~ ~ ~~ 1 1 ~~ 1 ~~ ~ . 1 ~~ ,~ ~~ 1 ~~ . 1 ~ ~~ x 1 ,~ ~~ ,~ 1 ~~ ~~ ~~ 1 ~ ~~ ~~ 1 x ~~ ~~ 1 ~ ~ - 1 1 ~~ ~~ n 1 ~~ ,~ 1 ~~ ~~ ~ ~~ 1 ~ ~~ . 1 ~~ ,~ ~~ 1 ~~ ~~ 1 ~ . Trip Blank (0803477-03) Water Received:06/06/08 13:10 Sampled:06/02/08 00:00 1,1,1,2-Tetrachloroethane <1.0 1.0 0.083 ug/L 1 1,1,1-Trichloroethane <1.0 1.0 0.098 ug/L 1 1,1,2,2-Tetrachloroethane <1.0 1.0 0.084 uglL 1 1,1,2-Trichloroethane <1.0 1.0 0.15 ug/L 1 1,1,2-Trichlorotrifluoroethane <1.0 1.0 0.10 ug/L 1 1,1-Dichloroethane <1.0 1.0 0.094 ug/L 1 1,1-Dichloroethene <1.0 1.0 0.10 ug/L 1 1,1-Dichloropropene <1.0 1.0 0.099 ug/L 1 68F1013 06/10/08 06/10/08 EPA 8260B Legend Technical Services, Inc. The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 6 of 14 ~.. TeChtlical SE?t'VICI/S, ~t"1~. www.(sg end-gtrotap.~ot` 88 Empire Drive St Paul, MN 55103 Tel: 651-642-1150 Fax: 651-642-1239 Liesch Associates, Inc. Project: Former Elk River Dump 13400 15th Avenue North, Suite A Project Number: 79019.00 Work Order #: 0803477 Plymouth MN, 55441 Project Manager: Mr. Tom Johnson Date Reported: 06/20/08 VOC 82606 Legend Technical Services, Inc. Analyte Result RL MDL Units Dilution Batch Prepared Analyzed Method Notes Trip Blank (0803477-03) Water Received:06/06108 13:10 Sampled:06/02/08 00:00 1,2,3-Trichlorobenzene <5.0 5.0 0.40 ug/L 1,2,3-Trichloropropane <2.5 2.5 0.13 ug/L 1,2,4-Trichlorobenzene <5.0 5.0 0.52 ug/L 1,2,4-Trimethylbenzene <1.0 1.0 0.052 ug/L 1,2-Dibromo-3-chloropropane <5.0 5.0 1.2 ug/L 1,2-Dibromoethane (EDB) <2.5 2.5 0.10 ug/L 1,2-Dichlorobenzene <1.0 1.0 0.12 ug/L 1,2-Dichloroethane <1.0 1.0 0.084 ug/L 1,2-Dichloropropane <1.0 1.0 0.13 ug/L 1,3,5-Trimethylbenzene <1.0 1.0 0.066 ug/L 1,3-Dichlorobenzene <1.0 1.0 0.094 ug/L 1,3-Dichloropropane <1.0 1.0 0.074 ug/L 1,4-Dichlorobenzene <1.0 1.0 0.053 ug/L 2,2-Dichloropropane <5.0 5.0 0.23 ug/L 2-Butanone <20 20 0.58 ug/L 2-Chlorotoluene <1.0 1.0 0.077 ug/L 4-Chlorotoluene <1.0 1.0 0.059 ug/L Acetone <20 20 0.89 ug/L Allyl chloride <5.0 5.0 0.28 uglL Benzene <1.0 1.0 0.047 uglL Bromobenzene <1.0 1.0 0.084 ug/L Bromochloromethane <1.0 1.0 0.075 ug/L Bromodichloromethane <1.0 1.0 0.13 ug/L Bromoform <5.0 5.0 0.074 ug/L Bromomethane <5.0 5.0 0.26 ug/L Carbon tetrachloride <1.0 1.0 0.074 ug/L Chlorobenzene <1.0 1.0 0.025 ug/L Chloroethane <2.5 2.5 0.26 ug/L Chloroform <1.0 1.0 0.098 uglL Chloromethane <2.5 2.5 0.098 ug/L cis-1,2-Dichloroethene <1.0 1.0 0.12 ug/L cis-1,3-Dichloropropene <1.0 1.0 0.11 ug/L Dibromochloromethane <2.5 2.5 0.084 ug/L Dibromomethane <2.5 2.5 0.14 ug/L Dichlorodifluoromethane <5.0 5.0 0.39 ug/L Dichlorofluoromethane <1.0 1.0 0.070 ug/L Ethyl ether <5.0 5.0 0.10 ug/L Ethylbenzene <1.0 1.0 0.055 ug/L 1 B8F1013 06/10/08 06(10/08 EPA 82608 1 ~ n 1 „ 1 „ 1 „ „ „ 1 „ „ „ 1 1 „ u a „ 1 „ a „ 1 1 „ „ „ w 1 ~ „ „ 1 „ „ 1 ~ „ „ 1 „ A „ „ 1 „ „ „ „ 1 „ „ „ „ 1 „ „ 1 „ ~ w „ 1 „ ~ „ „ 1 ., ~ „ „ 1 ~ „ w „ 1 „ ,. „ 1 ~, ~ „ „ 1 „ „ „ ti 1 ~ „ „ 1 „ „ w 1 „ „ „ „ 1 ~ „ „ a 1 „ 1 „ „ 1 „ „ „ 1 „ 1 „ „ 1 ~ „ ~ „ 1 „ x „ n 1 „ „ 1 „ ~ ~ „ Legend Technical Services, Inc. The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 7 of 14 L Tec#~r~al S~l`viceS ln~". UttYVMf.legend-grtiupcom 88 Empire Drive St Paul, MN 55103 Tel: 651-642-1150 Fax: 651-642-1239 Liesch Associates, Inc. Project: Former Elk River Dump 13400 15th Avenue North, Suite A Project Number: 79019.00 Work Order #: 0803477 Plymouth MN, 55441 Project Manager: Mr. Tom Johnson Date Reported: 06!20/08 VOC 82606 Legend Technical Services, Inc. Analyte Result RL MDL Units Dilution Batch Prepared Analyzed Method Notes Trip Blank (0803477-03) Water Received:06/06108 13:10 Sampled:06/02/08 00:00 Hexachlorobutadiene <10 10 0.58 ug/L 1 68F1013 06/10/08 06/10/08 EPA 82606 Isopropylbenzene <1.0 1.0 0.068 ug/L 1 " m,p-Xylene <2.0 2.0 0.14 ug/L 1 " Methyl isobutyl ketone <5.0 5.0 0.13 ug/L 1 " Methyl tert-butyl ether <1.0 1.0 0.079 ug/L 1 " Methylene chloride 8.1 5.0 0.29 ug/L 1 " Naphthalene <5.0 5.0 0.38 ug/L 1 " n-Butylbenzene <2.5 2.5 0.094 ug/L 1 " n-Propylbenzene <1.0 1.0 0.079 ug/L 1 " o-Xylene <1.0 1.0 0.074 ug/L 1 " " p-Isopropyltoluene <2.5 2.5 0.087 ug/L 1 " sec-Butylbenzene <1.0 1.0 0.030 ug/L 1 " Styrene <1.0 1.0 0.072 ug/L 1 " tert-Butylbenzene <1.0 1.0 0.046 ug/L 1 " Tetrachloroethene <1.0 1.0 0.10 ug/L 1 " Tetrahydrofuran <20 20 0.76 ug/L 1 " Toluene <1.0 1.0 0.036 ug/L 1 " trans-l,2-Dichloroethene <1.0 1.0 0.14 ug1L 1 " trans-l,3-Dichloropropene <1.0 1.0 0.082 ug/L 1 " Trichloroethene <1.0 1.0 0.097 ug/L 1 " Trichlorofluoromethane <1.0 1.0 0.17 ug/L 1 " Vinyl chloride <1.0 1.0 0.10 ug/L 1 " Surrogate:4-Bromofluorobenzene 87.3 80.125 % " Surrogate: Dibromofluoromethane 103 80-121 % " Surrogate: Toluene-d8 101 80-125 % ^ Legend Technical Services, Inc. The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 8 of 14 ~. Technical ~el`1riC~S, Cnc. vti+ww.lagett-~roup.cam: 88 Empire Drive St Paul, MN 55103 Tel: 651-642-1150 Fax: 651-642-1239 Liesch Associates, Inc. Project: Former Elk River Dump 13400 15th Avenue North, Suite A Project Number: 79019.00 Work Order #: 0803477 Plymouth MN, 55441 Project Manager. Mr. Tom Johnson Date Reported: 06/20/08 VOC 82606 -Quality Control Legend Technical Services, Inc. Spike Source %REC %RPD Anatyte Result RL MDL Units Leve- Result %REC Limits %RPD Limit Notes Batch B8F1013 - Volatiles Blank (B8F1013-BLK1) Prepared & Analyzed: 06/10/08 1,1,1,2-Tetrachloroethane < 1.0 1.0 0.083 ug/L 1,1,1-Trichloroethane < 1.0 1.0 0.098 ug/L 1,1,2,2-Tetrachloroethane < 1.0 1.0 0.084 ug/L 1,1,2-Trichloroethane < 1.0 1.0 0.15 ug/L 1,1,2-Trichlorotrifluoroethane < 1.0 1.0 0.10 ug/L 1,1-Dichloroethane < 1.0 1.0 0.094 ug/L 1,1-Dichloroethene < 1.0 1.0 0.10 ug/L 1,1-Dichloropropene < 1.0 1.0 0.099 ug/L 1,2,3-Trichlorobenzene <5.0 5.0 0.40 ug/L 1,2,3-Trichloropropane <2.5 2.5 0.13 ug/L 1,2,4-Trichlorobenzene < 5.0 5.0 0.52 ug/L 1,2,4-Trimethylbenzene < 1.0 1.0 0.052 ug/L 1,2-Dibromo-3-chloropropane < 5.0 5.0 1.2 ug/L 1,2-Dibromoethane (EDB) <2.5 2.5 0.10 ug/L 1,2-Dichlorobenzene < 1.0 1.0 .0.12 ug/L 1,2-Dichloroethane < 1.0 1.0 0.084 uglL 1,2-Dichloropropane < 1.0 1.0 0.13 ug/L 1,3,5-Trimethylbenzene < 1.0 1.0 0.066 ug/L 1,3-Dichlorobenzene < 1.0 1.0 0.094 ug/L 1,3-Dichloropropane < 1.0 1.0 0.074 ug/L 1,4-Dichlorobenzene < 1.0 1.0 0.053 ug/L 2,2-Dichloropropane < 5.0 5.0 0.23 ug/L 2-Butanone < 20 20 0.58 ug/L 2-Chlorotoluene < 1.0 1.0 0.077 ug/L 4-Chlorotoluene < 1.0 1.0 0.059 ug/L Acetone < 20 20 0.89 ug/L Allyl chloride < 5.0 5.0 0.28 ug/L Benzene < 1.0 1.0 0.047 ug/L Bromobenzene < 1.0 1.0 0.084 ug/L Bromochloromethane < 1.0 1.0 0.075 ug/L Bromodichloromethane < 1.0 1.0 0.13 uglL Bromoform < 5.0 5.0 0.074 ug/L Bromomethane < 5.0 5.0 0.26 ug/L Carbon tetrachloride < 1.0 1.0 0.074 ug/L Chlorobenzene < 1.0 1.0 0.025 ug/L Chloroethane < 2.5 2.5 0.26 ug/L Chloroform < 1.0 1.0 0.098 ug/L Chloromethane < 2.5 2.5 0.098 uglL cis-1,2-Dichloroethene < 1.0 1.0 0.12 ug/L cis-1,3-Dichloropropene <1.0 1,0 0.11 ug1L Legend Technical Services, Inc. The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 9 of 14 ~.. Technical Services, Inc.. vuwW.legesad-group.torn 88 Empire Drive St Paul, MN 55103 Tel: 651-642-1150 Fax: 651-642-1239 Liesch Associates, Inc. Project: Former Elk River Dump 13400 15th Avenue North, Suite A Project Number: 79019.00 Work Order #: 0803477 Plymouth MN, 55441 Project Manager: Mr. Tom Johnson Date Reported: 06/20/08 VOC 8260B -Quality Control Legend Technical Services, Inc. Spike Source %REC %RPD Analyte Result RL MDL Units Level Result %REC Limits %RPD Limit Notes Batch B8F1013 - Volatiles Blank (B8F1013-BLK1) Prepared & Analyzed: 06/10/08 Dibromochloromethane < 2.5 2.5 0.084 ug/L Dibromomethane < 2.5 2.5 0.14 ug/L Dichlorodifluoromethane < 5.0 5.0 0.39 ug/L Dichlorofluoromethane < 1.0 1.0 0.070 ug/L Ethyl ether < 5.0 5.0 0.10 uglL Ethylbenzene < 1.0 1.0 0.055 ug/L Hexachlorobutadiene < 10 10 0.58 ug/L Isopropylbenzene < 1.0 1.0 0.068 ug/L m,p-Xylene < 2.0 2.0 0.14 ug/L Methyl isobutyl ketone < 5.0 5.0 0.13 ug/L Methyl tert-butyl ether < 1.0 1.0 0.079 ug/L Methylene chloride < 5.0 5.0 0.29 ug/L Naphthalene < 5.0 5.0 0.38 ug/L n-Butylbenzene < 2,5 2.5 0.094 ug/L n-Propylbenzene < 1.0 1.0 0.079 ug/L o-Xylene < 1.0 1.0 0.074 ug/L p-Isopropyltoluene < 2.5 2.5 0.087 ug/L sec-Butylbenzene < 1.0 1.0 0.030 ug/L Styrene < 1.0 1.0 0.072 ug/L tert-Butylbenzene < 1.0 1.0 0.046 ug/L Tetrechloroethene < 1.0 1.0 0.10 ug/L Tetrahydrofuran < 20 20 0.76 ug/L Toluene < 1.0 1.0 0.036 ug/L trans-l,2-Dichloroethene < 1.0 1.0 0.14 ug/L trans-l,3-Dichloropropene <1.0 1.0 0.082 ug/L Trichloroethene < 1.0 1.0 0.097 ug/L Trichlorofluoromethane < 1.0 1.0 0.17 ug/L Vinyl chloride < 1.0 1.0 0.10 ug/L Surrogate:4-Bromotluorobenzene 43.1 ug/L 50.0 86.3 80-125 Surrogate: Dibromofluoromethane 51.4 ug/L 50.0 103 80-121 Surrogate: Toluene-d8 48.8 ug/L 50.0 97.7 80-125 Legend Technical Services, Inc. The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 10 of 14 1 Techrticai Services, Inc. www.lsgsr~d-group.com 88 Empire Drive St Paul, MN 55103 Tel: 651-642-1150 Fax: 651-642-1239 Liesch Associates, Inc. Project: Former Elk River Dump 13400 15th Avenue North, Suite A Project Number: 79019.00 Work Order #: 0803477 Plymouth MN, 55441 Project Manager: Mr. Tom Johnson Date Reported: 06/20/08 VOC 8260B -Quality Control Legend Technical Services, Inc. Spike Source %REC %RPD ~nalyte Result RL MDL Units Level Result %REC Limits %RPD Limit Notes Batch B8F1013 - Volatiles LCS (B8F1013-BS1) Prepared & Analyzed: 06!10/08 1,1,2,2-Tetrachloroethane 50.9 ug/L 50.0 102 76.9-120 1,1-Dichloroethane 44.6 ug/L 50.0 89.3 75-120 1,1-Dichloroethene 42.9 ug/L 50.0 85.8 75-120 1,3,5-Trimethylbenzene 47.7 ug/L 50.0 95.4 80-120 1,4-Dichlorobenzene 49.2 ug/L 50.0 98.4 75-125 2-Chlorotoluene 47.7 ug/L 50.0 95.4 78.1-120 Benzene 49.6 ug/L 50.0 99.2 80-120 Bromoform 48.8 ug/L 50.0 97.5 78.1-125 Chlorobenzene 50.2 ug/L 50.0 100 80-120 Chloroform 47.7 ug/L 50.0 95.4 75-120 Ethylbenzene 51.0 ug/L 50.0 102 80-120 n-But~Abenzene 49.8 ug/L 50.0 99.6 74-125 n-Propylbenzene 46.8 uglL 50.0 93.7 77.9-120 Toluene 47.4 ug/L 50.0 94.8 80-120 Trichloroethene 50.4 ug/L 50.0 101 79.2-120 Vinyl chloride 43.8 ug/L 50.0 87.6 70-125 Surrogate: 48romofluorobenzene 48.1 uy/L 50.0 96.3 80-125 Surrogate: Dibromofluoromefhane 52.1 ug/L 50.0 104 80-121 Surrogate: Toluene-d8 50.8 ug/L 50.0 102 BO-125 Matrix Spike (B8F1013-MS1) Source: 0803396-01 Prepared & Analyzed: 06/10/08 1,1,2,2-Tetrachloroethane 55.4 ug/L 50.0 < 111 75.3-123 1,1-Dichloroethane 46.2 ug/L 50.0 < 92.3 75-120 1,1-Dichloroethene 45.0 ug/L 50.0 < 90.0 75-120 1,3,5-Trimethylbenzene 50.3 ug/L 50.0 < 101 75-120 1,4-Dichlorobenzene 50.0 ug/L 50.0 < 100 75-125 2-Chlorotoluene 49.8 ug/L 50.0 < 99.7 75-120 Benzene 50.7 uglL 50.0 < 101 76.7-120 Bromoform 50.7 ug/L 50.0 < 101 76.8-125 Chlorobenzene 51.9 ug/L 50.0 < 104 80-120 Chloroform 49.5 ug/L 50.0 < 99.1 77.2-120 Ethylbenzene 52.4 ug/L 50.0 < 105 80-120 n-Butylbenzene 51.6 ug/L 50.0 < 103 70-125 n-Propylbenzene 49.1 ug/L 50.0 < 98.2 75-120 Toluene 48.1 ug/L 50.0 < 96.2 77.3-120 Trichloroethene 50.5 ug/L 50.0 < 101 79.2-120 Vinyl chloride 46.7 ug/L 50.0 < 93.3 70-125 Surrogate:4-Bromofluorobenzene 47.9 ug/L 50.0 95.8 80-125 Surrogate: Dibromofluoromethane 53.2 ug/L 50.0 106 80-121 Surrogate: Toluene-d8 50.2 ug/L 50.0 100 80-125 Legend Technical Services, Inc. The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 11 of 14 Techni-cal Servic~s~ Irtt. www.te~end-group.t:om 88 Empire Drive St Paul, MN 55103 Tel: 651-642-1150 Fax: 651-642-1239 Liesch Associates, Inc. Project: Former Elk River Dump 13400 15th Avenue North, Suite A Project Number. 79019.00 Work Order #: 0803477 Plymouth MN, 55441 Project Manager: Mr. Tom Johnson Date Reported: 06/20/08 VOC 82606 -Quality Control Legend Technical Services, Inc. Spike Source %REC %RPD ~nalyte Result RL MDL Units Level Result %REC Limits %RPD Limit Notes Batch B8F1013 - Volatiles Matrix Spike Dup (B8F1013-MSD1) Source: 0803396-01 Prepared & Analyzed: 06/10/08 1,1,2,2-Tetrachloroethane 52.3 ug/L 50.0 < 105 75.3-123 5.65 20 1,1-Dichloroethane 46.3 uglL 50.0 < 92.6 75-120 0.317 20 1,1-Dichloroethene 43.8 ug/L 50.0 < 87.6 75-120 2.60 20 1,3,5-Trimethylbenzene 47.5 ug/L 50.0 < 95.1 75-120 5.57 20 1,4-Dichlorobenzene 48.2 ug/L 50.0 < 96.3 75-125 3.73 20 2-Chlorotoluene 47.1 ug/L 50.0 < 94.2 75-120 5.63 20 Benzene 49.3 ug/L 50.0 < 98.5 76.7-120 2.88 20 Bromoform 48.8 ug/L 50.0 < 97.5 76.8-125 3.82 20 Chlorobenzene 50.8 ug/L 50.0 < 102 80-120 2.11 20 Chloroform 49.3 ug/L 50.0 < 98.6 77.2-120 0.507 20 Ethylbenzene 51.3 ug/L 50.0 < 103 80-120 2.16 20 n-But~Abenzene 49.5 ug/L 50.0 < 99.0 70-125 4.19 20 n-Propylbenzene 46.9 ug/L 50.0 < 93.8 75-120 4.62 20 Toluene 46.2 ug/L 50.0 < 92.4 77.3-120 3.97 20 Trichloroethene 49.7 ug/L 50.0 < 99.4 79.2-120 1.60 20 Vinyl chloride 47.1 ug/L 50.0 < 94.1 70-125 0.878 20 Surrogate:4-Bromofluorobenzene 47.1 ug/L 50.0 94.2 80-125 Surrogate: Dibromofluoromethane 51.6 ug/L 50.0 103 80-121 Surrogate: Toluene-d8 48.8 ug/L 50.0 97.7 80-f25 Legend Technical Services, Inc. The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 12 of 14 .. ~.7 Technical S~raices, Inc. ww~v,#~ertd-9roup.~cam 88 Empire Drive St Paul, MN 55103 Tel: 651-642-1150 Fax: 651-642-1239 Liesch Associates, Inc. Project: Former Elk River Dump 13400 15th Avenue North, Suite A Project Number: 79019.00 Work Order #: 0803477 Plymouth MN, 55441 Project Manager: Mr. Tom Johnson Date Reported: 06/20/08 Notes and Definitions < Less than value listed dry Sample results reported on a dry weight basis NA Not applicable. The %RPD is not calculated from values less than the reporting limit. MDL Method Detection Limit RL Reporting Limit RPD Relative Percent Difference LCS Laboratory Control Spike =Blank Spike MS Matrix Spike Legend Technical Services, Inc. The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 13 of 14 L G ~ [~ Technical Services, Inc. www.3g~a~d-grt~up.cprn 88 Empire Drive St Paul, MN 55103 Tel: 651-642-1150 Fax: 651-642-1239 1 _ }J ~ ~ ~ ~ ~ t 8 (}~. ~ ,~ i 4s. ~ ~• • .. ~ ~ ~ '~ t7 ~ ~ ~ ~ ~ - ~ +.AfiJ p© i~ ~ - .. . `~ . .g' a .~' ?S ~ $¢¢ ~ ~ ~ ~ ~: ~ - ~ .aG1 "S _ d~ ~ .. ~. ~ ~ ~ Cf ~iS `-0~ Legend Technical Services, Inc. The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 14 of 14