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10.a1 Scandia Mine Water Quality Lab ReportsPace Analytical Services, LLC 1700 Elm Street SE Minneapolis, MN 55414 Phone: 612.607.1700 Fax: 612.607.6388 www.pacelabs.com September 17, 2021 Mr. Mike Caron Barton Sand and Gravel P.O. Box 1480 Maple Grove, MN 55311-6480 RE: Pace Field Project No. 21-05000 Lab ID: 10577953 Client Project ID: Barton Sand & Gravel – Scandia Pit 741 Dear Mr. Caron: Enclosed are the analytical results for the samples received by the laboratory on September 8, 2021 for the sampling of the five monitoring points at the Scandia Pit 741 site. The results for all five monitoring points was ND (Not Detected) for DRO. Results reported herein conform to the most current NELAC standards, where applicable, unless otherwise narrated in the body of the report. If you have any questions concerning this report, please feel free to contact me. Sincerely, Chris Pelosi Project Manager 612-597-7254 State of Minnesota Laboratory No. 027-053-137 CC: Mr. Paul Schultz CC: Ms. Christina Morrison #=CL# September 16, 2021 LIMS USE: FR - CHRIS PELOSI LIMS OBJECT ID: 10577953 10577953 Project: Pace Project No.: RE: Chris Pelosi Pace Analytical Services - Field Services 1700 Elm Street SE Minneapolis, MN 55414 BS&G- Pit 741 Scandia Dear Chris Pelosi: Enclosed are the analytical results for sample(s) received by the laboratory on September 08, 2021. The results relate only to the samples included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and the laboratory's Quality Manual, where applicable, unless otherwise noted in the body of the report. The test results provided in this final report were generated by each of the following laboratories within the Pace Network: • Pace Analytical Services - Minneapolis If you have any questions concerning this report, please feel free to contact me. Sincerely, Jennifer Anderson jennifer.anderson@pacelabs.com Project Manager (612)607-6436 Enclosures cc:Riley Jacobson, Pace Analytical Services - Field Services REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1700 Elm Street Minneapolis, MN 55414 (612)607-1700 Page 1 of 14 #=CP# CERTIFICATIONS Pace Project No.: Project: 10577953 BS&G- Pit 741 Scandia Pace Analytical Services, LLC - Minneapolis MN 1700 Elm Street SE, Minneapolis, MN 55414 1800 Elm Street SE, Minneapolis, MN 55414--Satellite Air Lab A2LA Certification #: 2926.01* Alabama Certification #: 40770 Alaska Contaminated Sites Certification #: 17-009* Alaska DW Certification #: MN00064 Arizona Certification #: AZ0014* Arkansas DW Certification #: MN00064 Arkansas WW Certification #: 88-0680 California Certification #: 2929 Colorado Certification #: MN00064 Connecticut Certification #: PH-0256 EPA Region 8 Tribal Water Systems+Wyoming DW Certification #: via MN 027-053-137 Florida Certification #: E87605* Georgia Certification #: 959 Hawaii Certification #: MN00064 Idaho Certification #: MN00064 Illinois Certification #: 200011 Indiana Certification #: C-MN-01 Iowa Certification #: 368 Kansas Certification #: E-10167 Kentucky DW Certification #: 90062 Kentucky WW Certification #: 90062 Louisiana DEQ Certification #: AI-03086* Louisiana DW Certification #: MN00064 Maine Certification #: MN00064* Maryland Certification #: 322 Michigan Certification #: 9909 Minnesota Certification #: 027-053-137* Minnesota Dept of Ag Approval: via MN 027-053-137 Minnesota Petrofund Registration #: 1240* Mississippi Certification #: MN00064 Missouri Certification #: 10100 Montana Certification #: CERT0092 Nebraska Certification #: NE-OS-18-06 Nevada Certification #: MN00064 New Hampshire Certification #: 2081* New Jersey Certification #: MN002 New York Certification #: 11647* North Carolina DW Certification #: 27700 North Carolina WW Certification #: 530 North Dakota Certification #: R-036 Ohio DW Certification #: 41244 Ohio VAP Certification (1700) #: CL101 Ohio VAP Certification (1800) #: CL110* Oklahoma Certification #: 9507* Oregon Primary Certification #: MN300001 Oregon Secondary Certification #: MN200001* Pennsylvania Certification #: 68-00563* Puerto Rico Certification #: MN00064 South Carolina Certification #:74003001 Tennessee Certification #: TN02818 Texas Certification #: T104704192* Utah Certification #: MN00064* Vermont Certification #: VT-027053137 Virginia Certification #: 460163* Washington Certification #: C486* West Virginia DEP Certification #: 382 West Virginia DW Certification #: 9952 C Wisconsin Certification #: 999407970 Wyoming UST Certification #: via A2LA 2926.01 USDA Permit #: P330-19-00208 *Please Note: Applicable air certifications are denoted with an asterisk (*). REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1700 Elm Street Minneapolis, MN 55414 (612)607-1700 Page 2 of 14 #=SS# SAMPLE SUMMARY Pace Project No.: Project: 10577953 BS&G- Pit 741 Scandia Lab ID Sample ID Matrix Date Collected Date Received 10577953001 Potable Well Water 09/08/21 12:20 09/08/21 16:05 10577953002 Production Well Water 09/08/21 11:20 09/08/21 16:05 10577953003 Pond Water 09/08/21 11:45 09/08/21 16:05 10577953004 PZ-3 Water 09/08/21 10:15 09/08/21 16:05 10577953005 PZ-6 Water 09/08/21 09:45 09/08/21 16:05 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1700 Elm Street Minneapolis, MN 55414 (612)607-1700 Page 3 of 14 #=SA# SAMPLE ANALYTE COUNT Pace Project No.: Project: 10577953 BS&G- Pit 741 Scandia Lab ID Sample ID Method Analytes ReportedAnalysts 10577953001 Potable Well WI MOD DRO 2TT2 10577953002 Production Well WI MOD DRO 2TT2 10577953003 Pond WI MOD DRO 2TT2 SM 2540D 1DP1 EPA 350.1 1JFP SM 4500-P F 1AR3 10577953004 PZ-3 WI MOD DRO 2TT2 10577953005 PZ-6 WI MOD DRO 2TT2 SM 2540D 1DP1 EPA 350.1 1JFP SM 4500-P F 1AR3 PASI-M = Pace Analytical Services - Minneapolis REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1700 Elm Street Minneapolis, MN 55414 (612)607-1700 Page 4 of 14 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 10577953 BS&G- Pit 741 Scandia Sample:Potable Well Lab ID:10577953001 Collected:09/08/21 12:20 Received:09/08/21 16:05 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit Analytical Method: WI MOD DRO Preparation Method: WI MOD DRO Pace Analytical Services - Minneapolis WIDRO LV GCS WDRO C10-C28 ND mg/L 09/14/21 21:0909/13/21 13:150.10 1 Surrogates n-Triacontane (S)86 %.09/14/21 21:0909/13/21 13:1550-150 1 Sample:Production Well Lab ID:10577953002 Collected:09/08/21 11:20 Received:09/08/21 16:05 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit Analytical Method: WI MOD DRO Preparation Method: WI MOD DRO Pace Analytical Services - Minneapolis WIDRO LV GCS WDRO C10-C28 ND mg/L 09/14/21 21:1609/13/21 13:150.10 1 Surrogates n-Triacontane (S)66 %.09/14/21 21:1609/13/21 13:1550-150 1 Sample:Pond Lab ID:10577953003 Collected:09/08/21 11:45 Received:09/08/21 16:05 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit Analytical Method: WI MOD DRO Preparation Method: WI MOD DRO Pace Analytical Services - Minneapolis WIDRO LV GCS WDRO C10-C28 ND mg/L 09/14/21 20:4709/13/21 13:150.10 1 Surrogates n-Triacontane (S)88 %.09/14/21 20:4709/13/21 13:1550-150 1 Analytical Method: SM 2540D Pace Analytical Services - Minneapolis 2540D Total Suspended Solids Total Suspended Solids ND mg/L 09/14/21 16:1610.0 1 Analytical Method: EPA 350.1 Pace Analytical Services - Minneapolis 350.1 Ammonia Nitrogen, Ammonia ND mg/L 09/15/21 12:26 7664-41-70.10 1 Analytical Method: SM 4500-P F Preparation Method: SM 4500-P B Pace Analytical Services - Minneapolis SM4500P-F, Total Phosphorus Phosphorus ND mg/L 09/15/21 16:50 7723-14-009/15/21 14:440.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 09/16/2021 02:24 PM Pace Analytical Services, LLC 1700 Elm Street Minneapolis, MN 55414 (612)607-1700 Page 5 of 14 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 10577953 BS&G- Pit 741 Scandia Sample:PZ-3 Lab ID:10577953004 Collected:09/08/21 10:15 Received:09/08/21 16:05 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit Analytical Method: WI MOD DRO Preparation Method: WI MOD DRO Pace Analytical Services - Minneapolis WIDRO LV GCS WDRO C10-C28 ND mg/L 09/14/21 21:2309/13/21 13:150.10 1 Surrogates n-Triacontane (S)81 %.09/14/21 21:2309/13/21 13:1550-150 1 Sample:PZ-6 Lab ID:10577953005 Collected:09/08/21 09:45 Received:09/08/21 16:05 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit Analytical Method: WI MOD DRO Preparation Method: WI MOD DRO Pace Analytical Services - Minneapolis WIDRO LV GCS WDRO C10-C28 ND mg/L 09/14/21 20:5409/13/21 13:150.10 1 Surrogates n-Triacontane (S)87 %.09/14/21 20:5409/13/21 13:1550-150 1 Analytical Method: SM 2540D Pace Analytical Services - Minneapolis 2540D Total Suspended Solids Total Suspended Solids ND mg/L 09/14/21 16:1610.0 1 Analytical Method: EPA 350.1 Pace Analytical Services - Minneapolis 350.1 Ammonia Nitrogen, Ammonia ND mg/L 09/15/21 12:28 7664-41-70.10 1 Analytical Method: SM 4500-P F Preparation Method: SM 4500-P B Pace Analytical Services - Minneapolis SM4500P-F, Total Phosphorus Phosphorus ND mg/L 09/15/21 16:53 7723-14-009/15/21 14:440.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 09/16/2021 02:24 PM Pace Analytical Services, LLC 1700 Elm Street Minneapolis, MN 55414 (612)607-1700 Page 6 of 14 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 10577953 BS&G- Pit 741 Scandia Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: 769710 WI MOD DRO WI MOD DRO WIDRO Low Volume GCS Laboratory:Pace Analytical Services - Minneapolis Associated Lab Samples:10577953001, 10577953002, 10577953003, 10577953004, 10577953005 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:4101316 Associated Lab Samples:10577953001, 10577953002, 10577953003, 10577953004, 10577953005 Matrix:Water Analyzed WDRO C10-C28 mg/L ND 0.10 09/14/21 19:41 n-Triacontane (S)%.59 50-150 09/14/21 19:41 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 4101317LABORATORY CONTROL SAMPLE & LCSD: LCSSpike LCSD % Rec RPD Max RPD LCSD Result 4101318 WDRO C10-C28 mg/L 0.670.8 83 75-115990.79 18 20 n-Triacontane (S)%.72 50-15083 Parameter Units MS Result % Rec Limits Qual% RecConc. 4101414MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 10577898001 4101415 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. WDRO C10-C28 mg/L 0.78 98 75-11593 5 200.78ND 0.82 0.78 n-Triacontane (S)%.83 50-15086 Parameter Units MS Result % Rec Limits Qual% RecConc. 4101416MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 10577903001 4101417 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. WDRO C10-C28 mg/L R10.78 109 75-11580 21 200.80.25 1.1 0.89 n-Triacontane (S)%.86 50-15082 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 09/16/2021 02:24 PM Pace Analytical Services, LLC 1700 Elm Street Minneapolis, MN 55414 (612)607-1700 Page 7 of 14 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 10577953 BS&G- Pit 741 Scandia Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: 769916 SM 2540D SM 2540D 2540D Total Suspended Solids Laboratory:Pace Analytical Services - Minneapolis Associated Lab Samples:10577953003, 10577953005 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:4102278 Associated Lab Samples:10577953003, 10577953005 Matrix:Water Analyzed Total Suspended Solids mg/L ND 10.0 09/14/21 16:16 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 4102279LABORATORY CONTROL SAMPLE: LCSSpike Total Suspended Solids mg/L 80.0100 80 80-120 Parameter Units Dup Result Max RPD QualifiersRPDResult 10578296005 4102280SAMPLE DUPLICATE: Total Suspended Solids mg/L ND 5<10.0 Parameter Units Dup Result Max RPD QualifiersRPDResult 10578296006 4102281SAMPLE DUPLICATE: Total Suspended Solids mg/L ND 5<10.0 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 09/16/2021 02:24 PM Pace Analytical Services, LLC 1700 Elm Street Minneapolis, MN 55414 (612)607-1700 Page 8 of 14 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 10577953 BS&G- Pit 741 Scandia Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: 770258 EPA 350.1 EPA 350.1 350.1 Ammonia Laboratory:Pace Analytical Services - Minneapolis Associated Lab Samples:10577953003, 10577953005 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:4104102 Associated Lab Samples:10577953003, 10577953005 Matrix:Water Analyzed Nitrogen, Ammonia mg/L ND 0.10 09/15/21 12:19 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 4104103LABORATORY CONTROL SAMPLE: LCSSpike Nitrogen, Ammonia mg/L 2.52.5 100 90-110 Parameter Units MS Result % Rec Limits Qual% RecConc. 4104104MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 10577671001 4104105 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. Nitrogen, Ammonia mg/L 2.5 100 90-11099 1 202.5ND 2.5 2.5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 09/16/2021 02:24 PM Pace Analytical Services, LLC 1700 Elm Street Minneapolis, MN 55414 (612)607-1700 Page 9 of 14 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 10577953 BS&G- Pit 741 Scandia Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: 769961 SM 4500-P B SM 4500-P F SM4500P-F, Total Phosphorus Laboratory:Pace Analytical Services - Minneapolis Associated Lab Samples:10577953003, 10577953005 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:4102461 Associated Lab Samples:10577953003, 10577953005 Matrix:Water Analyzed Phosphorus mg/L ND 0.10 09/15/21 17:09 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 4102462LABORATORY CONTROL SAMPLE: LCSSpike Phosphorus mg/L 2.42.5 97 90-110 Parameter Units MS Result % Rec Limits Qual% RecConc. 4102463MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 10576519003 4102464 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. Phosphorus mg/L 2.5 94 80-12094 1 202.5<0.050 2.4 2.4 Parameter Units MS Result % Rec Limits Qual% RecConc. 4102465MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 10577494001 4102466 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. Phosphorus mg/L 2.5 93 80-12096 4 202.50.054J 2.4 2.5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 09/16/2021 02:24 PM Pace Analytical Services, LLC 1700 Elm Street Minneapolis, MN 55414 (612)607-1700 Page 10 of 14 #=QL# QUALIFIERS Pace Project No.: Project: 10577953 BS&G- Pit 741 Scandia DEFINITIONS DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot. ND - Not Detected at or above adjusted reporting limit. TNTC - Too Numerous To Count J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit. MDL - Adjusted Method Detection Limit. PQL - Practical Quantitation Limit. RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and bias for a specific analyte in a specific matrix. S - Surrogate 1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is a combined concentration. Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values. LCS(D) - Laboratory Control Sample (Duplicate) 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. Reported results are not rounded until the final step prior to reporting. Therefore, calculated parameters that are typically reported as "Total" may vary slightly from the sum of the reported component parameters. Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes. TNI - The NELAC Institute. WORKORDER QUALIFIERS WO: 10577953 Samples were received outside of the recommended temperature range of 0-6 degrees Celsius. The samples were received from the field on ice.[1] ANALYTE QUALIFIERS RPD value was outside control limits.R1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 09/16/2021 02:24 PM Pace Analytical Services, LLC 1700 Elm Street Minneapolis, MN 55414 (612)607-1700 Page 11 of 14 #=CR# QUALITY CONTROL DATA CROSS REFERENCE TABLE Pace Project No.: Project: 10577953 BS&G- Pit 741 Scandia Lab ID Sample ID QC Batch Method QC Batch Analytical Method Analytical Batch 10577953001 769710 770249Potable Well WI MOD DRO WI MOD DRO 10577953002 769710 770249Production Well WI MOD DRO WI MOD DRO 10577953003 769710 770249PondWI MOD DRO WI MOD DRO 10577953004 769710 770249PZ-3 WI MOD DRO WI MOD DRO 10577953005 769710 770249PZ-6 WI MOD DRO WI MOD DRO 10577953003 769916PondSM 2540D 10577953005 769916PZ-6 SM 2540D 10577953003 770258PondEPA 350.1 10577953005 770258PZ-6 EPA 350.1 10577953003 769961 770434PondSM 4500-P B SM 4500-P F 10577953005 769961 770434PZ-6 SM 4500-P B SM 4500-P F REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 09/16/2021 02:24 PM Pace Analytical Services, LLC 1700 Elm Street Minneapolis, MN 55414 (612)607-1700 Page 12 of 14 Page 13 of 14 JMA 9/9/21 Page 14 of 14