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8.d)2) Results of Monitoring Well Sampling and Other Activities for Anderson-Erickson 201 Wastewater Treatment System Meeting Date: 4/17/2012 Agenda Item: � � � � �� City Council Agenda Report City of Scandia 14727 209�' St. North Scandia, MN 55073 (651) 433-2274 Action Requested: Receive results of monitoring well sampling and other activities relating to the Anderson-Erickson portion of the 201 Wastewater Treatment System. Deadline/Timeline: The Council authorized various repairs, testing and monitoring of the system at its March 20 meeting. Background: • One of the items authorized at the March 20 meeting was the collection and analysis of samples from groundwater monitoring wells around the drainfield. A report describing the results of the testing is attached. Based on the sampling results, it appears that the system has impacted groundwater quality. The engineers are recommending that the wells be re-sampled to see if the results are repeatable. • This report is being shared with the Washington County Department of Health and Environment,the permitting authority and operator of the sysetm. More information on the potential impacts of the test results and recommendations for action should be available for discussion at the Council's May 8, 2012 work session. Recommendation: The Council should receive the report. Staff and consultants will be available to answer questions about the progress made on other work on the Anderson-Erickson system (including repairs and sump-pump inspections) at the April 17 meeting. Attachments/ • Memo from Clint Jordahl, Stantec, dated April 12, 2012 Materials provided: Contact(s): Ryan Goodman, PE (651) 967-4616 Prepared by: Anne Hurlburt, Administrator (Anderson Erickson report) Page 1 of 1 04/13/12 Memo �� To: Ryan Goodman From: Clint Jordahl Stantec, St. Paul MN Stantec, St. Cloud, MN File: 193802153 Date: April 12, 2012 Reference: Anderson/Erickson Wastewater System— City of Scandia Ryan, Attached you will find the analytical results for the samples collected from the four deep groundwater monitoring wells surrounding the Anderson/Erickson drainfield. The wells were samples on March 22, 2012 using the dedicated balder pumps installed in the 1980s when the system was new. Samples collected from the wells were analyzed for Chlorides, nitrite plus nitrate (NOz + NO3), Total Kjeldahl Nitrogen (TKN), and ammonia nitrogen. These four parameters are typical of those required for groundwater monitoring systems at drainfields operated under permits issued by the State of Minnesota. Chloride is a general water quality parameter and its presence can be used track impacts to shallow aquifers from wastewater systems. Chloride concentrations ranged from 7.7 mg/L in Well C to 493 mg/L in Well B. There is no enforceable drinking water limit for Chloride, but there is a secondary limit (aesthetic limit)of 250 mg/L. This secondary limit for Chloride was exceeded in three of the four wells sampled. The three nitrogen species (TKN, ammonia and NO2 + NO3) are collectively of concem in drinking water due to their ability to be metabolized into nitrite, and nitrite's potential to negatively impact the health of infants. The Minnesota Department of Health has established a Health Risk Limit (HRL)of 10 mg/L for nitrate as nitrogen in drinking water. The Environmental Protection Agency (EPA) has established a Maximum Concentration Limit (MCL)of 1 mg/L nitrite as nitrogen in public water supplies. Neither TKN nor ammonia was present in any of the water samples tested; however, NOZ + NO3 was present in concentrations ranging from 1.4 mg/L in monitoring Well C to 19.6 mg/L in Well B. The nitrogen concentration was in excess of the HRL in three of four wells sampled. The water table beneath the site is about 50 feet below the surface or roughly the elevation of Big Marine Lake. Because the water level in two of the wells was below the top of the pumps, accurate groundwater elevations could not be measured. Therefore, the direction of groundwater flow could not be determined based on direct measurement during the March 2012 sampling event. Nevertheless, MPCA One Team.lnfinite Solutions. jc c:\users\cjordahl\documents\bonestoo�2011Gscandia\well sampling memo.docx Starttec April 11,2012 Ryan Goodman Page 2 of 2 Reference: AndersonlErickson System correspondence from the early 1990s suggests that the groundwater flow direction beneath the site is northwesterly. Based on the sampling results, it appears that the system has impacted groundwater quality. Well C, which is located in a presumptively upgradient position with respect to the drainfield is likely to best represent the quality of the groundwater flowing to the site. Both the Chloride and nitrogen concentrations in the water sample collected from this well were fairly low. In contrast, Chloride and nitrogen concentrations in each of the other wells were much higher. Wells A and B are located so close the actual drainfield area that they appear to be impacted by wastewater trickling through the soil and diffusing at the water table. According to MPCA correspondence, Well D is not located directly downgradient of the system, but "is probably located just far enough within the plume edge to be useful as an indicator of downgradient water quality". At this point I would recommend that the wells be resampled to see if the results are repeatable. I might suggest waiting until after the heavy use period surrounding the 4tn of July to sample the wells. It may also be interesting to install a truly downgradient well at the drainfield property boundary to determine if groundwater impacted above drinking water standards is traveling off site. If the condition persists, it may be necessary to alter the configuration and/or use of the drainfield system to address the high nitrogen concentrations in the groundwater. Sincerely, Stantec Consulting Services Clinton . Jord I, PG Senior G i clint.jordahl@stantec.com Attachment: Laboratory Analytical Report � Pace Analyticai Services,Ine. aceAnalytical 1700 Elm Street-Suite 200 www.paoeJebs.com Minneapolis,MN 55414 � (612)607-1700 April 05, 2012 Mr. Clint Jordahl Stantec 3717 23rd St. S. Saint Cloud, MN 56301 RE: Project: 193802153 ANDERSON/ERICKSON DR Pace Project No.: 10186674 Dear Mr. Jordahl: Enclosed are the analytical results for sample(s) received by the laboratory on March 23, 2012. The results relate only to the samples included in this report. Results reported herein conform to the most current TNI standards and the laboratory's Quality Assurance Manual, where applicable, unless otherwise noted in the body of the report. If you have any questions concerning this report, please feel free to contact me. Sincerely, i%�i��,�- Mariah Peronto mariah.peronto@pacelabs.com Project Manager Enclosures �A � REPORT OF LABORATORY ANALYSIS Page 1 of 12 This report shall not be reproduced,except in full, � � ��, without the written consent of Pace Analytical Services,Inc.. 9 � 10 674 1 of 14 � � Pace Analytical Services,Inc. c10EAl1c1�,�1Cc?� 1700 Elm SVeet-Suite 200 www.pecelabs.com Minneapolis,MN 55414 , (612)607-1700 CERTIFICATIONS Project: 193802153 ANDERSON/ERICKSON DR Pace Project No.: 10186674 Minnesota Cert�cation IDs 1700 Elm Street SE Suite 200,Minneapolis,MN 55414 Mississippi Certification#:Pace A2LA Certification#:2926.01 Montana Certification#:MT CERT0092 Alaska Certification#:UST-078 Nevada Certification#:MN 00064 Alaska Certification#MN00064 Nebraska Certification#:Pace Arizona Certification#:AZ-0014 New Jersey Certification#:MN-002 Arkansas Certification#:88-0680 New Mexico Certification#:Pace California Certification#:01155CA New York Certification#: 11647 EPA Region 8 Certification#:Pace North Carolina Certification#:530 Florida/NELAP Certification#:E87605 North Dakota Certification#:R-036 Georgia Certification#:959 North Dakota Certification#:R-036A Idaho Certification#:MN00064 Ohio VAP Certification#:CL101 Illinois Certification#:200011 Oklahoma Certification#:D9921 lowa Certification#:368 Oklahoma Certification#:9507 Kansas Certification#:E-10167 Oregon Certification#:MN200001 Louisiana Certification#:03086 Pennsylvania Certification#:68-00563 Louisiana Certification#:LA080009 Puerto Rico Certification Maine Certification#:2007029 Tennessee Certification#:02818 Maryland Certification#:322 Texas Certification#:T104704192 Michigan DEQ Certification#:9909 Washington Certification#:C754 Minnesota Certification#:027-053-137 Wisconsin Certification#:999407970 Green Bay CeRification IDs 1241 Bellevue Street,Green Bay,WI 54302 New York Certification#: 11888 Florida/NELAP Certification#:E87948 North Carolina Certification#:503 Illinois Certification#:200050 North Dakota Certification#:R-150 Kentucky Certification#:82 South Carolina Certification#:83006001 Louisiana Certification#:04168 US Dept of Agriculture#:S-76505 Minnesota Certification#:055-999-334 Wisconsin Certification#:405132750 REPORT OF LABORATORY ANALYSIS Page 2 of 12 This report shall not be reproduced,except in full, without the written consent of Pace Analytical Services,Inc.. 10186674 2 of 14 e Pace Analytical Services,Inc. aceAnalytical 1700 Elm SVeet-Suite 200 �,�ps,� Minneapolis,MN 55414 � (612)607-1700 SAMPLE SUMMARY Project: 193802153 ANDERSON/ERICKSON DR Pace Project No.: 10186674 Lab ID Sample ID Matrix Date Collected Date Received 10186674001 WELL A DEEP Water 03/22/12 14:15 03/23/12 16:15 10186674002 WELL B DEEP Water 03/22/12 13:05 03/23/12 16:15 10186674003 WELL C DEEP Water 03/22/12 15:15 03/23/12 16:15 10186674004 WELL D DEEP Water 03/22/12 16:35 03/23/12 16:15 REPORT OF LABORATORY ANALYSIS Page 3 of 12 This report shall not be reproduced,except in full, without the written consent of Pace Analytical Services,Inc.. 10186674 3 of 14 � Pace Analytical Services,inc. aceAnalytical 1700 Elm SVeet-Suite 200 N,�,�s� Minneapolis,MN 55414 (612)607-1700 SAMPLE ANALYTE COUNT Project: 193802153 ANDERSON/ERICKSON DR Pace Project No.: 10186674 Analytes Lab ID Sample ID Method Analysts Reported Laboratory 10186674001 WELL A DEEP EPA 350.1 MWD 1 PASI-M EPA 3512 DAW 1 PASI-G SM 4500-NO3 H MWD 1 PASI-M SM 4500-CI E KEO 1 PASI-M 10186674002 WELL B DEEP EPA 350.1 MWD 1 PASI-M EPA 351.2 DAW 1 PASI-G SM 4500-NO3 H MWD 1 PASI-M SM 4500-CI E KEO 1 PASI-M 10186674003 WELL C DEEP EPA 350.1 MWD 1 PASI-M EPA 351.2 DAW 1 PASI-G SM 4500-NO3 H MWD 1 PASI-M SM 4500-CI E KEO 1 PASI-M 10186674004 WELL D DEEP EPA 350.1 MWD 1 PASI-M EPA 351.2 DAW 1 PASI-G SM 4500-NO3 H MWD 1 PASI-M SM 4500-CI E KEO 1 PASf-M REPORT OF LABORATORY ANALYSIS Page 4 of 12 This report shall not be reproduced,except in full, without the written consent of Pace Analytical Services,Inc.. 10186674 4 of 14 � Pace Analytical Services,Inc. aceAnalyticaJ 170M nl eatpol st,MNf554/4 x�rw.pacelebs.com I (612)607-1700 ANALYTICAL RESULTS Project: 193802153 ANDERSON/ERICKSON DR Pace Project No.: 10186674 Sample: WELL A DEEP Lab ID: 10186674001 Collected: 03l22/12 14:15 Received: 03/23/12 16:15 Matrix: Water Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual 350.1 Ammonia Analytical Method:EPA 350.1 Nitrogen,Ammonia ND mg/L 0.040 1 04/03/12 11:34 7664-41-7 351.2 ToWI Kjeldahl Nitrogen Analytical Method:EPA 351.2 Nitrogen,Kjeldahl,Total ND mg/L 1.0 1 04/04/12 09:15 04/04/12 13:17 7727-37-9 SM4500NO3-H,NO2+NO3 pres. Analytical Method:SM 4500-NO3 H Nitrogen,NO2 plus NO3 16.2 mg/L 1.0 10 03/27/12 15:50 SM4500CI-E Chloride Analytical Method:SM 4500-CI E Chioride 377 mg/L 20.0 10 03/29/12 11:02 16887-00-6 Sample: WELL B DEEP Lab ID: 10186674002 Collected: 03/22/12 13:05 Received: 03/23/12 16:15 Matrix: Water Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual 350.1 Ammonia Analytical Method:EPA 350.1 Nitrogen,Ammonia ND mg/L 0.040 1 04/03/12 1135 7664-41-7 351.2 Total Kjeldahl Nitrogen Analytical Method:EPA 351.2 Nitrogen,Kjeldahl,Total ND mg/L 1.0 1 04/04/12 09:15 04/04/12 13:18 7727-37-9 SM4500NO3-H,NO2+NO3 pres. Analytical Method:SM 4500-NO3 H Nitrogen,NO2 plus NO3 19.6 mg/L 1.0 10 03/27/12 15:58 SM4500CI-E Chloride Analytical Method:SM 4500-CI E Chloride 493 mg/L 20.0 10 03/29/12 10:53 16887-00-6 Sample: WELL C DEEP Lab ID: 10186674003 Collected: 03/22/12 15:15 Received: 03/23/12 16:15 Matrix: Water Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual 350.1 Ammonia Analytical Method:EPA 350.1 Nitrogen,Ammonia ND mg/L 0.040 1 04/03/12 11:36 7664-41-7 351.2 Total Kjeldahl Nitrogen Analytical Method:EPA 351.2 Nitrogen,Kjeldahl,Total ND mg/L 1.0 1 04/04/12 09:15 04/04/12 13:19 7727-37-9 SM4500NO3-H,NO2+NO3 pres. Analytical Method:SM 4500-NO3 H Nitrogen,NO2 plus NO3 1.4 mg/L 1.0 10 03/27/12 15:59 SM4500CI-E Chloride Analytical Method:SM 4500-CI E Chloride 7.7 mg/L 2.0 1 03/29/12 10:16 16887-00-6 Date:04/05/2012 04:55 PA4 REPORT OF LABORATORY ANALYSIS Page 5 of 12 This report shall not be reproduced,except in full, without the written consent of Pace Analytical Services,Inc.. 10186674 5 of 14 ' � Pace Analytical Services,I�c. aceAnalytical 1700 Elm Street-Suite 200 - N,�►x,paoeleyscom Minneapolis,MN 55414 (612)607-1700 ANALYTICAL RESULTS Project: 193802153 ANDERSON/ERICKSON DR Pace Project No.: 10186674 Sample: WELL D DEEP Lab ID: 10186674004 Collected: 03/22/12 16:35 Received: 03/23/12 16:15 Matrix: Water Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual 350.1 Ammonia Analytical Method:EPA 350.1 Nitrogen,Ammonia ND mg/L 0.040 1 04/03/12 11:37 7664-41-7 M1 351.2 Total Kjeldahl Nitrogen Analytical Method:EPA 351.2 Nitrogen,Kjeldahl,Total ND mg/L 1.0 1 04/04/12 09:15 04/04/12 13:21 7727-37-9 SM4500NO3-H,NO2+NO3 pres. Analytical Method:SM 4500-NO3 H Nitrogen,NO2 plus NO3 12.9 mg/L 1.0 10 03/27/12 16:03 SM4500CI-E Chloride Analytical Method:SM 4500.CI E Chloride 415 mg/L 20.0 10 03/29/12 10:53 16887-00-6 Date:04/05/2012 04:55 PM REPORT OF LABORATORY ANALYSIS Page 6 of 12 This report shall not be reproduced,except in full, without the written consent of Pace Analytical Services,Inc.. 10186674 6 of 14 � Pace Analytical Services,Inc. aceAnalyticai 1700 Elm Street-Suite 200 w,wwpaoebyscan Minneapolis,MN 55414 �s�z>so�-��oo QUALITY CONTROL DATA Project: 193802153 ANDERSON/ERICKSON DR Pace Project No.: 10186674 QC Batch: WETA/11947 Analysis Method: EPA350.1 QC Batch Method: EPA 350.1 Analysis Description: 350.1 Ammonia Associated Lab Samples: 10186674001,10186674002, 1 01 866 74 00 3, 10186674004 METHOD BLANK: 1165712 Matrix: Water Associated Lab Samples: 10186674001,10186674002,10186674003, 10186674004 Blank Reporting Parameter Units Result Limit Analyzed Qualifiers Nitrogen,Ammonia mg/L ND 0.040 04/03/12 11:23 LABORATORY CONTROL SAMPLE: 1165713 Spike LCS LCS %Rec Parameter Units Conc. Result %Rec Limits Qualifiers Nitrogen,Ammonia mg/L 1 1.1 108 90-110 MATRIX SPIKE 8 MATRIX SPIKE DUPLICATE: 1165714 1165715 MS MSD 10187261001 Spike Spike MS MSD MS MSD %Rec Max Parameter Units Result Conc. Conc. Result Result %Rec %Rec Limits RPD RPD Qual Nitrogen,Ammonia mg/L 0.52 1 1 1.7 1.6 115 113 90-110 2 20 M1 MATRIX SPIKE 8�MATRIX SPIKE DUPLICATE: 1165716 1165717 MS MSD 10186674004 Spike Spike MS MSD MS MSD %Rec Max Parameter Units Result Conc. Conc. Result Result %Rec %Rec Limits RPD RPD Qual Nitrogen,Ammonia mg/l ND 1 1 1.1 1.1 113 110 90-110 2 20 M1 Date:04/05/2012 04:55 PM REPORT OF LABORATORY ANALYSIS Page 7 of 12 This report shall not be reproduced,excepl in full, without the written consent of Pace Analytical Services,Inc.. 10186674 7 of 14 � Pace Analytical Services,Inc. aceAnalyticai� 1700 Elm Street-Suite 200 N,N,N,�S� Minneapolis,MN 55414 (612)607-1700 QUALITY CONTROL DATA Project: 193802153 ANDERSON/ERICKSON DR Pace Project No.: 10186674 QC Batch: WETA/11843 Analysis Method: EPA 351.2 QC Batch Method: EPA 351.2 Analysis Description: 351.2 TKN Associated Lab Samples: 10186674001,10186674002,10186674003, 10186674004 METHOD BLANK: 586523 Matrix: Water Associated Lab Samples: 10186674001, 10186674002,10186674003, 10186674004 Blank Reporting Parameter Units Result Limit Analyzed Qualifiers Nitrogen,Kjeldahl,Total mg/L ND 1.0 04/04/12 13:11 LABORATORY CONTROL SAMPLE: 586524 Spike LCS LCS %Rec Parameter Units Conc. Result %Rec Limits Qualifiers Nitrogen,Kjeldahl,Total mg/L 5 5.1 102 90-110 MATRIX SPIKE&MATRIX SPIKE DUPLICATE: 586525 586526 MS MSD 10186449001 Spike Spike MS MSD MS MSD %Rec Max Parameter Units Result Conc. Conc. Result Result %Rec %Rec Limits RPD RPD Qual Nitrogen,Kjeldahl,Total mg/L 1.9 5 5 7.1 6.9 105 101 90.110 3 20 MATRIX SPIKE 8 MATRIX SPIKE DUPLICATE: 586527 586528 MS MSD 4058016001 Spike Spike MS MSD MS MSD °/a Rec Max Parameter Units Result Conc. Conc. Result Result %Rec %Rec Limits RPD RPD Qual Nitrogen,Kjeldahl,Total mg/L <0.35 5 5 5.8 5.7 112 110 90-110 2 20 MO Date:04/05/2012 04:55 PM REPORT OF LABORATORY ANALYSIS Page 8 of 12 This report shall not be reproduced,except in full, without the written consent of Pace Analytical Services,Inc.. 10186674 8 of 14 � Pace Analyticai Services,inc. � aL'e!v 1Q'�� '�I 1700 Elm Street-Suite 200 �.�py�ps.� Minneapolis,MN 55414 I (612)607-1700 QUALITY CONTROL DATA Project: 193802153 ANDERSON/ERICKSON DR Pace Project No.: 10186674 QC Batch: WETA/11922 Analysis Method: SM 4500-NO3 H QC Batch Method: SM 4500-NO3 H Analysis Description: SM4500NO3-H,NO2+NO3 pres. Associated Lab Samples: 10186674001,10186674002, 10186674003, 10186674004 METHOD BLANK: 1161991 Matrix: Water Associated Lab Samples: 10186674001,10186674002, 10186674003, 10186674004 Blank Reporting Parameter Units Result Limit Analyzed Qualifiers Nitrogen,NO2 plus NO3 mg/L ND 0.20 03/27/12 11:08 LABORATORY CONTROL SAMPLE: 1161992 Spike LCS LCS %Rec Parameter Units Conc. Result %Rec Limits Qualifiers Nitrogen,NO2 plus NO3 mg/L 2.5 2.4 97 90-110 MATRIX SPIKE&MATRIX SPIKE DUPLICATE: 1161993 1161994 MS MSD 10186543012 Spike Spike MS MSD MS MSD °/,Rec Max Parameter Units Result Conc. Conc. Result Result %Rec %Rec Limits RPD RPD Qual Nitrogen,NO2 plus NO3 mg/L ND 2.5 2.5 2.5 2.5 98 97 80-120 1 30 MATRIX SPIKE&MATRIX SPIKE DUPLICATE: 1161995 1161996 MS MSD 10186674001 Spike Spike MS MSD MS MSD %Rec Max Parameter Units Result Conc. Conc. Result Result %Rec %Rec Limits RPD RPD Qual Nitrogen,NO2 plus NO3 mg/L 16.2 12.5 12.5 30.9 30.2 118 112 80-120 3 30 Date:04/05/2012 04:55 PM REPORT OF LABORATORY ANALYSIS Page 9 of 12 This report shall not be reproduced,except in full, without the written consent of Pace Analytical Services,Inc.. 10186674 9 of 14 � Pace Analytical Services,Inc. aceAnalytical� 1700 Elm SVeet-Suite 200 N,�,�ys� Minneapolis,MN 55414 (612�07-1700 QUALITY CONTROL DATA Project: 193802153 ANDERSON/ERICKSON DR Pace Project No.: 10186674 QC Batch: WETA/11935 Analysis Method: SM 4500-CI E QC Batch Method: SM 4500-CI E Analysis Description: SM4500CI-E Chloride Associated Lab Samples: 10186674001,10186674002,10186674003, 10186674004 METHOD BLANK: 1163726 Matrix: Water Associated Lab Samples: 10186674001, 10186674002,10186674003, 10186674004 Blank Reporting Parameter Units Result Limit Analyzed Qualifiers Chloride mg/L ND 2.0 03/29/1210:16 LABORATORY CONTROL SAMPLE: 1163727 Spike LCS LCS %Rec Parameter Units Conc. Result %Rec Limits Qualifiers Chloride mg/L 30 31.7 106 90-110 MATRIX SPIKE 8 MATRIX SPIKE DUPLICATE: 1163728 1163729 MS MSD 10186943001 Spike Spike MS MSD MS MSD °/a Rec Max Parameter Units Result Conc. Conc. Result Resutt %Rec %Rec Limits RPD RPD Qual Chloride mg/L 122 30 30 149 151 91 99 80-120 1 30 MATRIX SPIKE&MATRIX SPIKE DUPLICATE: 1163730 1163731 MS MSD 10186964005 Spike Spike MS MSD MS MSD %Rec Max Parameter Units Result Conc. Conc. Result Result %Rec %Rec Limits RPD RPD Qual Chloride mg/L 61.4 30 30 87.1 86.9 86 85 80-120 .3 30 Date:04/05/2012 04:55 PM REPORT OF LABORATORY ANALYSIS Page 10 of 12 This report shall not be reproduced,except in full, without the written consent of Pace Analytical Services,Inc.. 10186674 10 of 14 � Pace Analytical Services,Inc. ' aceAnalytical 1700 Elm Street-Suite 200 �,��5� Minneapolis,MN 55414 (612)607-1700 QUALIFIERS Project: 193802153 ANDERSON/ERICKSON DR Pace Project No.: 10186674 DEFINITIONS DF-Dilution Factor,if reported,represents the factor applied to the reported data due to changes in sample preparation,dilution of the sample aliquot,or moisture content. ND-Not Detected at or above adjusted reporting limit. J-Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit. MDL-Adjusted Method Detection Limit. S-Surrogate 1,2-Diphenylhydrazine(8270 listed analyte)decomposes to Azobenzene. Consistent with EPA guidelines,unrounded data are displayed and have been used to caiculate%recovery and RPD values. LCS(D)-Laboratory Control Sample(Dup�icate) MS(D)-Matrix Spike(Duplicate) DUP-Sample Duplicate RPD-Relative Percent Difference NC-Not Calculable. SG-Silica Gel-Clean-Up U-Indicates the compound was analyzed for,but not detected. N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for each analyte is a combined concentration. Pace Analytical is TNI accredited.Contact your Pace PM for the current list of accredited analytes. TNI-The NELAC Institute. LABORATORIES PASI-G Pace Analytical Services-Green Bay PASI-M Pace Analytical Services-Minneapolis ANALYTE QUALIFIERS MO Matrix spike recovery and/or matrix spike duplicate recovery was outside laboratory control limits. M1 Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample(LCS)recovery. Date:04/05/2012 04:55 PM REPORT OF LABORATORY ANALYSIS Page 11 of 12 This report shall not be reproduced,except in full, without the written consent of Pace Analytical Services,Inc.. 10186674 11 of 14 ' � Pace Analytical Services,Inc. aceAnalytical 1700 Elm Street-Suite 200 ww�,psoele6s oom Minneapolis,MN 55414 (612)607-1700 QUALITY CONTROL DATA CROSS REFERENCE TABLE Project: 193802153 ANDERSON/ERICKSON DR Pace Project No.: 10186674 Analytical Lab ID Sample ID QC Batch Method QC Batch Analytical Method Batch 10186674001 WELL A DEEP EPA 350.1 WETA/11947 10186674002 WELL B DEEP EPA 350.1 WETA/11947 10186674003 WELL C DEEP EPA 350.1 WETA/11947 10186674004 WELL D DEEP EPA 350.1 WETA/11947 10186674001 WELL A DEEP EPA 351.2 WETA/11843 EPA 351.2 WETA/11848 10186674002 WELL B DEEP EPA 351.2 WETA/11843 EPA 351.2 WETA/11848 10186674003 WELL C DEEP EPA 351.2 WETA/11843 EPA 351.2 WETA/11848 10186674004 WELL D DEEP EPA 351.2 WETA/11843 EPA 351.2 WETA/11848 10186674007 WELL A DEEP SM 4500-NO3 H WETA/11922 10186674002 WELL B DEEP SM 4500-NO3 H WETA/11922 10186674003 WELL C DEEP SM 4500-NO3 H WETA/11922 10186674004 WELL D DEEP SM 4500.NO3 H WETA/11922 10186674001 WELL A DEEP SM 4500-CI E WETA/11935 10186674002 WELL B DEEP SM 4500-CI E WETA/11935 10186674003 WELL C DEEP SM 4500-CI E WETA/11935 10186674004 WELL D DEEP SM 4500-CI E WETA/11935 Date:04/05/2012 04:55 PM REPORT OF LABORATORY ANALYSIS Page 12 of 12 This report shall not be reproduced,except in full, without the written consent of Pace Analytical Services,Inc.. 10186674 12 of 14 ; Q « �'' r — (N//J � ' � � �i�l�Weg a 3 � y 8 � z � F ;; z �4 E N W ,_ - ` ' � r � �"' r Z r� . 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Q�_.. _ -- - _. - - . _�_ _ _. - '� � � W � � V � � v � � a � �� ~ � � � ;�.. ;ae. � H y � F �` �: � � � . :� � � N �� ' � � � .. o � � � � Z � �d�� > �3,�W� �n — aw�m+or�ve��) � m�' � � � � 300�XIaiVW Z �� o r � � o��s Q � m o� � c4 (� � a Z a � � l� $ U 3 � � v .Z , � � ��_� � O �" _� � � o3��b�� ; � � � � .�� _ � � � � � � �� F � ` `� � �� q � � �� a a � � <a . � . ' . � �� .� � o� .e �� ' � #YV31� .� N M! �f kl '�o .� ao fA ..�-. ; � � 13 of 14 Document Name: Revised Date: 15Feb2012 � _� CEA1t8/yt1C�lrt Sam le Condition U n Recei t Form. Pa e 1 of 1 � Document Number: Iss�ing Authority: F-MN-L-213-rev.02 Pace Minnesota Quality Office • , a . Client Name: �'��-�-e-�'�s�--�+�.�,� Project# b l ��D(�� Courier: ❑ Fed Ex❑ UPS� USPS❑ Client❑ Commeraat ❑ Pace a0ther Tracking#; Custody Seal on CooleNBox Presene: ❑ yes � no Seals intact: ❑yes � no Packing Materiat: ❑Bubble Wrap ❑ Bubble Bags �None ❑ Other Temp Blank:Yes �_ No Thermometer Used 03a4 2 or 60512447 Type of ice:�� Blue None ❑ Samptes on ioe;cooNn rooess has begun Cooler Temperature � ' � BiotoBical Tissue is Frozen: Yes No p8��^�-��exa ng contones:'� 3 ��S Temp shoWd be above ireezing to 6'C Comments: � Chain of Custod Present: Yes �No Own �, Chain of Custod Filted Out: ve$ Owo Drua 2, Chain of Custod Reifn uished: res �n►o Own 3. Sam er Name&Si nature on COC: es ONo ❑nun 4. Sam les Arrived within Hold T(me: Yes ❑n�o pruq 5. Short Hold Time Anal sis <72hr: �res No Owp g, Rush Turn Around Time Re uested: Ovea Mo OnuA 7. Sufficient Volume: v� ONo Ciwn g. Correct Containers Used: �ves ONo Onuq g. -Pace Containers Used: res DNo Own Containers Intact: res Orro Own 10. Fltered volume received for Dissoived tests Ores ONo N/A 11, Sample Labeis match COC: res �rvo Own �Z, _..—�ludes dateQim�e/IQlAnal.sis. ..Matcix:---... . .._._._ �_.. _.. . . –AII-conteiners-needin�acid/tTa�se-prSs�ti�i-IS�v�been —- Checked. Noncompiiance are noted in 13. Yes ❑No OhVA 13. � HNO3 H� � O NaOH O HG G � AN contafners needing preservation are found to be in � Samp# � compliance wilh EPA recommendation. (HNO3,�yes Q� ON�A ��2 ��- ��'�' � � H2SO4.HCL<2;NaOH>12) �y+GL�� ,. ��.,`��,y- � OYes f�r,b �nillaf when -� Lot#of added �� Exceptions:VOA,Cotilortn,TOC,Oil and Greeae,WI•DRO(water) COmpleted p►eSeN8tiV8 Heads ace in VOA Vials >6mm: Ores Orro wa �q. Trip Blank Pr�esent: Oves Owo �nun 15, / Trip Blank Custody Seals Presen! Uves �No �MrA Pace Trip Blank Lot# if urchased : Client Notitication/Resolution: Field Data Requ�red? Y / N Person Contacted: Date/T'ime: Comments/Resotution: �,� ,� Projec4lWanager Review: �f,,�' r•'' � 'T- _ �:,�ll.••:•i�i7'�`%'�i_�',Y:9ir��v°-.._ Date: 'Ii' '.C.ifj'%�v - L._ Note: Whenever there is a discrepancy affecting North Carotina compliance samples,a copy of this form will be sent to the North Carolina DEHNR Certificalion Office(i.e out of hold,incorrect preservatNe,out o(temp,incorrect containers) 10186674 14 of 14