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Home My WebLink AboutWQ0001492_Report_20190404 hart hickman SMARTER ENVIRONMENTAL SOLUTIONS Via Email & FedEx April 4, 2019 North Carolina Department of Environmental Quality Division of Water Resources—Water Quality Program 127 Cardinal Drive Extension Wilmington,NC 28405 Attn: Dr. Morella Sanchez-King, PhD, PE Re: Non-Compliance Resampling Report—March 2019 Elementis Chromium Castle Hayne Manufacturing Facility Occidental Chemical Corporation SDIBR Permit No. WQ0001492 H&H Job No. OXY-003 Dear Dr. Sanchez-King: On behalf of Glenn Springs Holdings/Occidental Chemical Corporation, Hart & Hickman, PC (H&H) is submitting this report to document March 2019 resampling of two monitor wells in which total chromium was detected above the 15A NCAC 02L .0202 ground water standard (2L standard) of 10 micrograms per liter (µg/1) during Surface Disposal of Industrial Byproducts Residuals (SDIBR) permit-required groundwater compliance monitoring completed on November 5-8, 2018 and non-compliance resampling completed on December 20, 2018 and January 28, 2019 at the Elementis Chromium Castle Hayne Manufacturing Facility. A non- compliance notification dated December 4, 2018 was provided to the Division of Water Resources (DWR) Wilmington Regional Office after receipt of the November 2018 analytical data in accordance with Condition IV.12 of the Occidental Chemical Corporation SDIBR Permit No. WQ0001492, a non-compliance resampling report dated January 4, 2019 was submitted to DWR after receipt of the December 2018 analytical data, and a non-compliance resampling report dated February 18, 2019 was submitted to DWR after receipt of the January 2019 analytical data. Background Information Analytical results of the SDIBR permit-required groundwater compliance monitoring completed on November 5-8, 2018 indicate total chromium was detected slightly above the 2L standard in samples collected from compliance monitor wells MW-1/CPW-135, MW-9/CPW-9D, and MW- 10/CPW-IOD. Well locations are depicted in the attached Figure 1. Based upon our review of historical analytical data, detections of total chromium above the 2L standard in SDIBR permit compliance wells located along the perimeter of the Quarry are rare, and detections of total 2923 South Tryon Street,Suite 100 3921 Sunset Ridge Rd,Suite 301 Charlotte,NC 28203 Raleigh,NC 27607 www.harthickman.com 704.586.0007 main 919.847.4241 main Dr. Morella Sanchez-King April 4, 2019 Page 2 chromium above the 2L standard in three wells during a single monitoring event is an anomalous occurrence. As documented in the December 4, 2018 non-compliance notification, prior to November 2018, total chromium was not previously detected above the current 2L standard in samples collected from MW-9 since 1999, and total chromium was detected above the current 2L standard in only two samples collected from MW-10 since 1999 (0.093 mg/l in November 2002 and 0.014 mg/I in March 2008). In accordance with the December 4, 2018 non-compliance notification, on December 20, 2018, MW-1/CPW-135, MW-9/CPW-9D, and MW-10/CPW-IOD were resampled to further evaluate the anomalous detections. The analytical results of the December 2018 samples indicate that total chromium was not detected above the laboratory minimum reporting limit (0.01 mg/1) in MW-1/CPW-135, and that total chromium was detected above the 2L standard in the December 2018 samples collected from MW-9/CPW-9D (0.016 mg/1) and MW-10/CPW-10D (0.031 mg/1). Following submittal of the January 4, 2019 non-compliance resampling report documenting the December 2018 sampling, and in accordance with DWR's request, MW- 9/CPW-9D and MW-10D/CPW-10D were sampled for total chromium and iron on January 28, 2019. The analytical results of the January 2019 samples indicate that total chromium was detected slightly above the 2L standard in the samples collected from MW- 9/CPW-9D (0.015 mg/1) and MW-10/CPW-IOD (0.018 mg/1). Total iron was not detected in either sample. Wells MW-9/CPW-9D and MW-10/CPW-I0D are located along the western perimeter of Quarry Section 1 (Figure 1). Residual solids generated by the Elementis Chromium Castle Hayne Manufacturing Facility's wastewater treatment plant (WWTP) are currently disposed in Quarry Section 2. Therefore, it does not appear likely that active discharge of residual solids is the cause of the recent total chromium detections in MW-9/CPW-9D and MW-I O/CPW-I OD. The November 2018, December 2018, and January 2019 samples were collected approximately two, three, and four months (respectively) after Hurricane Florence made landfall near Wilmington,NC (on September 14, 2018). The widespread regional precipitation attributable to Hurricane Florence (over 20 inches fell over several days) resulted in historic high Northeast Cape Fear River levels near the site (with levels reaching approximately 15 ft above mean sea level—AMSL), and the river remained above its flood stage near the Site for approximately two weeks. Note that the Quarry perimeter dike elevation is approximately 12 ft AMSL, and the river flooded the Quarry for several days. In addition to the historic flooding from Hurricane Florence, 2018 was a year of high rainfall with over 100 inches of rain reported in 2018 in the Wilmington area (versus the average of 57 inches). We believe it is possible that the total chromium concentrations detected in MW-9/CPW-9D and MW-10/CPW-IOD during and after November 2018 are associated with the historic flooding and rainfall. March 2019 Sample Results Following submittal of the February 18, 2019 non-compliance resampling report documenting the January 2019 sampling, MW-9/CPW-9D and MW-I OD/CPW-I OD were sampled for total chromium and iron on March 19, 2019. Note that the February 18, 2019 non-compliance resampling report recommended that MW-9/CPW-9D and MW-IOD/CPW-IOD be resampled hart � hickman SMARTER ENVIRONMENTAL SOLUTIONS S:\AAA-Master Projects\Oxychem\Quarry\Quarry L-Cap Sampling\2019\Non-Compliance\3.19 Resampling\Non-Compliance Resampling Report.doc Dr. Morella Sanchez-King April 4, 2019 Page 3 during late March 2019, and DWR indicated its concurrence with the recommendation in an email dated February 25, 2019. The March 2019 samples were collected using standard low- flow sampling techniques and were submitted under standard chain-of-custody protocols to ALS Environmental's Rochester, NY laboratory. The analytical results for the samples (received by H&H on April 2, 2019) indicate total chromium was detected above the 2L standard in both samples (0.017 mg/1 in MW-9/CPW-9D and 0.042 mg/l in MW-l0D/CPW-l0D). Total iron was detected below the 2L standard of 0.3 mg/1 in MW-l0D/CPW-l0D (0.22 mg/1) and was not detected in MW-9/CPW-9D. H&H notified DWR of the March 2019 chromium detections above the 2L standard via telephone call and email on April 3, 2019. The laboratory analytical report for the March 2019 samples is attached to this report and the November 2018, December 2018, January 2019, and March 2019 total chromium sample results for MW-9/CPW-9D and MW-I OD/CPW-I OD are summarized below. Well Screen Total Chromium Concentration (mg/1) Well ID Interval (ft bgs) Nov-18 Dec-18 Jan-19 Mar-19 MW-9(CPW-9D) 85 to 105 0.019 0.016 0.015 0.017 MW-10(CPW-IOD) 57 to 97 0.018 0.031 0.018 0.042 Additional Evaluation Plan H&H discussed the results of the March 2019 sampling with DWR personnel on April 4, 2019. During the conversation, DWR and H&H agreed that MW-9/CPW-9D and MW-10/CPW-IOD will be resampled during early May 2019, and that MW-8/CPW-8DR (located to the east of MW-9/CPW-9D) and MW-15/CPW-15D (located to the south of MW-10/CPW-10D) will also be sampled at that time. During April 2019 (prior to sampling), each of the four wells will be redeveloped. The wells will be sampled using standard low-flow techniques. Field-filtered and unfiltered samples will be collected from each well to evaluate potential contribution of suspended sediments in ground water to chromium concentrations (if detected). Note that turbidity measurements for the November 2018 through March 2019 MW-9/CPW-9D and MW- 10/CPW-10D samples were less than five nephelometric turbidity units. Each of the filtered and unfiltered samples will be submitted for analysis of total and hexavalent chromium to determine whether or not chromium (if detected) in ground water is present in the relatively mobile hexavalent oxidation state. After receipt of the May 2019 laboratory analytical results, a letter report documenting the methods and results of the sampling will be submitted to DWR. The report will also include recommendations for additional sampling and/or alternative actions, if warranted based on the results of the samples. hart � hickman SMARTER ENVIRONMENTAL SOLUTIONS S:\AAA-Master Projects\Oxychem\Quarry\Quarry L-Cap Sampling\2019\Non-Compliance\3.19 Resampling\Non-Compliance Resampling Report.doc Dr. Morella Sanchez-King April 4, 2019 Page 4 Should you have any questions or need any additional information, please feel free to contact me at 704-586-0007 or Ms. Teresa Jordan with Glenn Springs Holdings (for Occidental Chemical Corporation) at 972-687-7540. Sincerely, Hart&Hickman, PC Scott Drury,PE Project Manager Attachments cc: Ms. Teresa Jordan—Glenn Springs Holdings (via email) Mr. Sean Coury—Elementis Chromium(via email) hart � hickman SMARTER ENVIRONMENTAL SOLUTIONS S:\AAA-Master Projects\Oxychem\Quarry\Quarry L-Cap Sampling\2019\Non-Compliance\3.19 ResamplingWon-Compliance Resampling Report.doc WELL IDENTIFICATION LIST SDIBR PERMIT CORRESPONDING WELL ID I-CAP WELL ID MW-1 CPW-13S MW-2 CPW-14S - _ APPROXIMATE MW-3 CPW-15S _...-... _ - - - _ �... 0 600 1,200 MW-8 CPW-8DR - - SCALE IN FEET MW-9 CPW-9D MW-10 CPW-10D NORTHEAST CAPE FEAR RIVER MW-11 CPW-1S MW-12 CPW-12D MW 13 CPW 13D - MW-14 CPW-14D \\ STURGEON j / �� MW-15 CPW-15D _--STURGEON MW-16 CPW-6S MW-17 CPW-7S CPW-10S \ �.. CPW 9S RVERS11'AMP / ` \.\\ MW-18 CPW-8S CPW-9D J \�, \ \� MW-19 CPW-19S I CPW 10D ORTNFq MW 20 CPW 10S RIVER \` \ STC _ MW 21 CPW 5S _ �` \ wA 1 qpF FF MW-22 CPW-2D MW 23 CPW-3D EBB MW-24 CPW-4D CPW- CPW-15D CPW-8S MW-25 CPW-5DCPW8DR MARTIN-MARIETTA MW-26 CPW-6D AGGREGATES � PROPERTY I I \_ �. ` MW-27 CPW-7D QUARRY SECTION#1 T��. CPW-14D / 1 CPW-6S — -_. _ MW-28 CPW-12S J a / APPROXIMATELY 70 ACRES / \ :� CPW-6D RIVER Sw i CPW-14S %: i / AMP / / i % / RIVE W �. o QUARRY SECTION#2 / __ R S APPROXIMATELY 97 ACRES i -- // C /. AMP i _--- / CLOSED/FORMER FORMER PW-5D / JtAGOON CPW-5S CPW-7D RE-ROUTED - / CPW-12S_ l \ STURGEON CREEK CPW-12D _ -...CANAL � _j \ CPW-13D��a \ r�� — -_- --- - /// // �� J PLANT PROCESS ARE 1 CPW-13S — — — — / / LJJ �J: - - /� - MARTIN IETTA - / s AGGREGAT PROPERTY CPW-4D /_..I Y . ITICCPW-1S o MARTIN-MARIETTA co AGGREGATES PROPERTY m j: LCW-1 S CPW-3D 0: O j LCW-1 D\ CPW-2D - - — - o 0 do �o 5� LEGEND — - — PROPERTY LINE SURFACE WATER FEATURE TIT. ------- QUARRY LIMITS(RESIDUALS SURFACE DISPOSAL UNITS) FACILITY MAP 2923 South Tryon Street-Suite 100 — — — — COMPLIANCE BOUNDARY hart hickman Charlotte,North Carolina 28203 — — — REVIEW BOUNDARY PROJECT 704-586-0007(p)704-586-0373(� RAILROAD TRACKS ELEMENTIS CHROMIUM CASTLE HAYNE SMARtERENVIRONMEPRALSOUMONS License#C-1269/#C-245 Geology $ UPPER AQUIFER(SHALLOW)MONITOR WELL MANUFACTURING FACILITY/FORMER OCCIDENTAL DATE: 12-02-18 REVISION NO.0 0 LOWER AQUIFER(DEEP)MONITOR WELL CHEMICAL CORPORATION FACILITY CASTLE HAYNE, NORTH CAROLINA JOB NO.OXY-001 FIGURE NO. 1 A April 02, 2019 Service Request No:R1902356 Ms. Sheri Finn GHD Services Inc. 2055 Niagara Falls Blvd., Suite 3 Niagara Falls, NY 14304 Laboratory Results for: Castle Hayne 258-402-D02-3100 Dear Ms.Finn, Enclosed are the results of the sample(s) submitted to our laboratory March 20, 2019 For your reference, these analyses have been assigned our service request number R1902356. All analyses were performed according to our laboratory's quality assurance program. The test results meet requirements of the NELAP standards except as noted in the case narrative report. All results are intended to be considered in their entirety, and ALS Environmental is not responsible for use of less than the complete report. Results apply only to the items submitted to the laboratory for analysis and individual items (samples) analyzed, as listed in the report. The measurement uncertainty of the results included in this report is within that expected when using the prescribed method(s) for analysis of these samples, and represented by Laboratory Control Sample control limits. Any events, such as QC failures, which may add to the uncertainty are explained in the report narrative. Please contact me if you have any questions. My extension is 7471. You may also contact me via email at Brady.Kalkman@alsglobal.com. Respectfully submitted, ALS Group USA, Corp. dba ALS Environmental Brady Kalkman Project Manager ADDRESS 1565 Jefferson Road,Building 300,Suite 360,Rochester,NY 14623 PHONE +1 585 288 5380 FAX +1 585 288 8475 ALS Group USA,Corp. dba ALS Environmental 1 of 21 ALS Environmental DocumentsNarrative ALS Environmental—Rochester Laboratory 1 565 Jefferson Road, Building 300, Suite 360, Rochester, NY 14623 Phone (585) 288-5380 Fax (585) 288-8475 www.alsglobal.com RIGHT SOLUTIONS I RIGHT PARTNER 2of21 AlEnuironmentall 1565 Jefferson Rd,Building 300,Rochester,NY 14623 1585-288-5380 I www.alsglobal.com Client: GHD Services Inc. (Formerly Conestoga-Rovers & Service Request: R1902356 Associates, Inc.) Project: Castle Hayne 258-402-D02-3100 Date Received: 03/20/2019 Sample Matrix: Water CASE NARRATIVE All analyses were performed consistent with the quality assurance program of ALS Group. This report contains analytical results for samples designated for Tier II data deliverables. When appropriate to the method, method blank results have been reported with each analytical test. Additional quality control analyses reported herein may include where applicable: Surrogate Recoveries, Laboratory Duplicate (DUP), Matrix Spike (MS), Matrix/Duplicate Matrix Spike (MS/DMS), Laboratory Control Sample (LCS), and Laboratory/Duplicate Laboratory Control Sample (LCS/DLCS). Sample Receipt: Two water samples were received for analysis at ALS laboratory on 03/20/2019. The samples were received in good condition and consistent with the accompanying chain of custody form. Unless otherwise noted, samples were stored in a refrigerator at 4° C upon receipt at the laboratory. Metals: No significant anomalies were noted with this analysis. Approved by Date 04/02/2019 3of21 AALSEnuirlonmental SAMPLE DETECTION SUMMARY LIENT ID: MW-10 (CPW-10D) Lab ID: R1902356-001 Analyte Results Flag MDL MRL Units Method --------------------------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Chromium, Total 0.042 0.0010 0.010 mg/L 200.7 Iron, Total 0.22 0.02 0.10 mg/L 200.7 LIENT ID: MW-9 (CPW-9D) Lab ID: R1902356-002 Analyte Results Flag M D L M R L Units Method ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Chromium, Total 0.017 0.0010 0.010 mg/L 200.7 4of21 ALS Environmental Sample • • • ALS Environmental—Rochester Laboratory 1 565 Jefferson Road, Building 300, Suite 360, Rochester, NY 14623 Phone (585) 288-5380 Fax (585) 288-8475 www.alsglobal.com RIGHT SOLUTIONS I RIGHT PARTNER 5of21 Client: GHD Services Inc. (Formerly Conestoga-Rovers &Associates, Inc.) Service Request:R1 902356 Project: Castle Hayne 258-402-D02-3100/6448 - DM SAMPLE CROSS-REFERENCE SAMPLE # CLIENT SAMPLE ID DATE TIME R1902356-001 MW-10 (CPW-10D) 3/19/2019 1150 R1902356-002 MW-9 (CPW-9D) 3/19/2019 1240 6of21 Printed 4/2/2019 11:45:58 AM Sample Summary AEnutronmental CHAIN OF CUSTODY&ABORATORY ANALYSIS REQUEST FORM 38572 1565 Jefferson Road, Building 300,Suite 360 a Rochester,NY 14623 +1 585 288 5380 +1 585 288 8475(fax) PAGE OF k Pf K-t Nemo C�STL t+A 7 N PiO "1pl10er p M b Z_3( ANALYSIS REOUESTED {include Method Number and Contalner AreseroatIve) Prof- Report CC fC 6v 1—r DA V Ry PRESERVATIVE _6 N Company/Address Preservative Key m 0. NONE °C S. HCL 2. 5' !g !4 t•L j �v�. a 3. H2SO4 0 4. NeOH O 5. Zn.Acetate r� ` L o �'.{�►! r'!t�� 3 �. m old o�" ak �O 8. Ocher • Sa , Samptere PRnted Name i�_� � Z �� , �C, £ REMARKS/ + e_ 4k,1 0,5' c e o o e ALTERNATE DESCRIPTION FOR OFFICE USE SAMPLING CLIENT SAMPLE ID ONLY LAB ID DATE TIME MATRIX jq SPECIAL INSTRUCTIONS/COMMENTS TURNAROUND REQUIREMENTS REPORT REOUIREMENTS INVOICE INFORMATION Metals RUSH fSURCHAROESAPPLY) —1.ReuftOMy 1•, I ( G �� i fT r v� —11.Resu +OC Smunad"t day—R day day lts ILCS.DUR MSD as regi lr f+�+ �dey� ) �� TO: [. / Q� pay IMS —III.Results+OC etW Calibration BILL G� Summaries REOUESTED REPORT DATE N.Data Validation Reporl vdlh Rew Data See OAPP E3~ STATE WHERE SAMPLES WERE COLLECTED Edata —Yes —No RELINQUISHED BY RECEIVED BY RE UNOUISHED BY RECEIVED BY RELINQUISHED BY RECEIVED BY S' Signature Signatue Signature �I N Printed Name Printed Name N _ Prin,ad Name R 19 0 235 6 5 Cs,tl:Hayns�-402-M-3100 Fft �' F F�n I Illlllll Ill Illll lull lull full IINI lull Illl Illl Date Tex r DateRime r .t s;�a Datell6rre (f, :y Dat%Time >r7ov Distr(bu:lon:Whtle-Lab Copy;Yellow-Retum to Orlgfnetor m 2012 by ALS Group 4 i R1902356 5 GHD services Inc. + Castle Hayne 2684024302a100 , Illlllllllllllllllllllillllllllllllllillllllllllll Cooler Receipt and Preservation Check FornitL S g.� -� - Project/Client Folder Number Cooler received on U- � by:1 COURIER: ALS UPS FEDEX VELOCITY CLIENT 1 Were Custody seals on outside of cooler? Y N 5a Perchlorate samples have required headspace? Y N NA 2 Custody papers properly completed(ink,signed)? Y N 5b Did VOA vials,Aik,or Sulfide have sig*bubbles? Y N NA 3 Did all bottles arrive in good condition(unbroken)? Y N 6 Where did the bottles originate? ALS/ROC CLIENT 4 Circle: et I Dry Icp Gel packs present? N 7 Soil VOA received as: Bulk Encore 5035set NA 8.Temperature Readings Date: J a,�'/'I Time: a{� 0 ID: IR#7 1R#1 From Temp B! Sample Bottle Observed Temp(IC) ,, Correction Factor(*C) ;3 Corrected Temp(°C) , Temp from:Type of bottle {/ . Within 0-6°C? N Y N Y N Y N Y N Y N Y N If<OOC, were samples frozen? y ]v Y N Y N Y N Y N Y N Y N If out of Temperature,note packinglice condition: Ice melted Poorly Packed(described below) Same Day Rule &Client Approval to Run Samples: Standing Approval Client aware at drop-off Client notified by: All samples held in storage location: by ' on 3 / at 5035 samples placed in storage location: by on at Cooler Breakdown/Preservation Check**: Date: & 19 Time: /77K by: 9. Were all bottle labels complete(i.e. analysis,prigervition,etc.)? NO 10. Did all bottle labels and tags agree with custody papers? NO it. Were correct containers used for the tests indicated? NO 12. Were 5035 vials acceptable(no extra labels,not leaking)? YES NO 13. Air Sam les: Cassettes/Tubes Intact with MS? Canisters Pressurized TedlarO Ba s Inflated / PH Lot of test Reagent Preserved? Lot Received Exp Sample ID Vol. Lot Added Final paper Yes No Adjusted Added pH >12 NaOH 52 2,0 /7 HNO3 // <2 H2SO4 <4 NaHSO4 5-9 For 608pest No=Notify for 3day Residual For CN, if+,contact PM to add Chlorine Phenol,625, N11:S203(625,608, 608 est, 522 CN),ascorbic(phenol). Na2S203 ZnAcetate - **VOAs and 1664 Not to be tested before analysis. HCI ** ** Otherwise,all bottles of all samples with chemical preservatives are checked not just representatives), Bottle lot numbers: Explain all Discrepancies/Other Comments: CLRES BULK DO FLDT HPROD HGFB HTR LL3541 PH SUB S03 MARRS ALS REV Labels secondary reviewed by:� �D PC Secondary Review: *significant air bubbles:VOA>5-6 mm : WC>I in.diameter P:VNTRANETIQAQCIForms ControlledlCooler Receipt rl6.doe 8 of 21 3112ti 8 ALS Environmental MiscellaneousForms ALS Environmental—Rochester Laboratory 1 565 Jefferson Road, Building 300, Suite 360, Rochester, NY 14623 Phone (585) 288-5380 Fax (585) 288-8475 www.alsglobal.com RIGHT SOLUTIONS I RIGHT PARTNER 9of21 Anuironmental REPORT QUALIFIERS AND DEFINITIONS U Analyte was analyzed for but not detected. + Correlation coefficient for MSA is<0.995. The sample quantitation limit has been N Inorganics-Matrix spike recovery was outside corrected for dilution and for percent moisture,unless otherwise noted in the case laboratory limits. narrative. N Organics-Presumptive evidence of a compound J Estimated value due to either being a (reported as a TIC)based on the MS library search. Tentatively Identified Compound(TIC)or S Concentration has been determined using Method that the concentration is between the MRL of Standard Additions(MSA). and the MDL. Concentrations are not verified W Post-Digestion Spike recovery is outside control within the linear range of the calibration. For limits and the sample absorbance is<50%of the DoD: concentration>40/o difference between spike absorbance. two GC columns(pesticides/Arclors). B Analyte was also detected in the associated P Concentration>40%difference between the two method blank at a concentration that may GC columns. have contributed to the sample result. C Confirmed by GC/MS E Inorganics-Concentration is estimated due to Q DoD reports: indicates a pesticide/Aroclor is not the serial dilution was outside control limits. confirmed(>100%Difference between two GC E Organics-Concentration has exceeded the columns). calibration range for that specific analysis. X See Case Narrative for discussion. D Concentration is a result of a dilution, MRL Method Reporting Limit. Also known as: typically a secondary analysis of the sample LOQ Limit of Quantitation(LOQ) due to exceeding the calibration range or that The lowest concentration at which the method a surrogate has been diluted out of the sample analyte may be reliably quantified under the and cannot be assessed. method conditions. * Indicates that a quality control parameter has MDL Method Detection Limit. A statistical value exceeded laboratory limits. Under the derived from a study designed to provide the lowest "Notes"column of the Form I,this qualifier concentration that will be detected 99%of the denotes analysis was performed out of time. Values between the MDL and MRL are Holding Time. estimated(see J qualifier). H Analysis was performed out of hold time for LOD Limit of Detection. A value at or above the MDL tests that have an"immediate"hold time which has been verified to be detectable. criteria. ND Non-Detect. Analyte was not detected at the # Spike was diluted out. concentration listed. Same as U qualifier. �N ACC09 U U � Q � 2 Rochester Lab ID # for State Certifications' Connecticut ID#PHO556 Maine ID#NY0032 Pennsylvania ID#68-786 Delaware Approved New Hampshire ID#2941 Rhode Island ID# 158 DoD ELAP#65817 New York ID# 10145 Virginia#460167 Florida ID#E87674 North Carolina#676 Analyses were performed according to our laboratory's NELAP-approved quality assurance program and any applicable state or agency requirements. The test results meet requirements of the current NELAP/TNI standards or state or agency requirements,where applicable,except as noted in the case narrative. Since not all analyte/method/matrix combinations are offered for state/NELAC accreditation,this report may contain results which are not accredited. For a specific list of accredited analytes,contact the laboratory or go to httt)s://www.alsglobal.com/locations/americas/north-america/usa/new-vork/rochester-environmental 10 of 21 P.\INIRANEI\QAQC\Fonns Controlled\QUALIF_routine rev 5.doc 9/28/18 ALS Laboratory Group Acronyms ASTM American Society for Testing and Materials A2LA American Association for Laboratory Accreditation CARB California Air Resources Board CAS Number Chemical Abstract Service registry Number CFC Chlorofluorocarbon CFU Colony-Forming Unit DEC Department of Environmental Conservation DEQ Department of Environmental Quality DHS Department of Health Services DOE Department of Ecology DOH Department of Health EPA U. S. Environmental Protection Agency ELAP Environmental Laboratory Accreditation Program GC Gas Chromatography GC/MS Gas Chromatography/Mass Spectrometry LUFT Leaking Underground Fuel Tank M Modified MCL Maximum Contaminant Level is the highest permissible concentration of a substance allowed in drinking water as established by the USEPA. MDL Method Detection Limit MPN Most Probable Number MRL Method Reporting Limit NA Not Applicable NC Not Calculated NCASI National Council of the Paper Industry for Air and Stream Improvement ND Not Detected NIOSH National Institute for Occupational Safety and Health PQL Practical Quantitation Limit RCRA Resource Conservation and Recovery Act SIM Selected Ion Monitoring TPH Total Petroleum Hydrocarbons tr Trace level is the concentration of an analyte that is less than the PQL but greater than or equal to the MDL. 11 of 21 ALS Group USA,Corp. dba ALS Environmental Analyst Summary report Client: GHD Services Inc.(Formerly Conestoga-Rovers&Associates, Service Request: R1902356 Project: Castle Hayne 258-402-DO2-3100/6448-DM Sample Name: MW-10(CPW-1OD) Date Collected: 03/19/19 Lab Code: R1902356-001 Date Received: 03/20/19 Sample Matrix: Water Analysis Method Extracted/Digested By Analyzed By 200.7 KMCLAEN LHERRING Sample Name: MW-9(CPW-9D) Date Collected: 03/19/19 Lab Code: R1902356-002 Date Received: 03/20/19 Sample Matrix: Water Analysis Method Extracted/Digested By Analyzed By 200.7 KMCLAEN LHERRIN G Printed 4/2/2019 11:45:59 AM Superset Reference:19-0000502136 rev 00 12 of 21 AINORGANIC PREPARATION METHODS The preparation methods associated with this report are found in these tables unless discussed in the case narrative. Water/Liquid Matrix Solid/Soil/Non-Aqueous Matrix Analytical Method Preparation Method Analytical Method Preparation Method 200.7 200.2 6010C 3050B 200.8 200.2 6020A 3050B 6010C 3005A/3010A 6010C TCLP (1311) 3005A/3010A extract 6020A ILM05.3 6010 SPLP (1 31 2) extract 3005A/3010A 9014 Cyanide Reactivity SW846 Ch7, 7.3.4.2 7196A 3060A 9034 Sulfide Reactivity SW846 CV, 7.3.4.2 7199 3060A 9034 Sulfide Acid 9030B 9056A Halogens/Halides 5050 Soluble 9056A Bomb (Halogens) 5050A 300.0 Anions/ 350.1/ DI extraction 9066 Manual Distillation 9065 353.2/ SM 2320B/ SM 5210B/ 9056A Anions SM 4500-CN-E Residual SM 4500-CN-G Cyanide For analytical methods not listed,the preparation SM 4500 CN E WAD SM 4500 CN I method is the same as the analytical method reference. Cyanide P:\INTRANET\QAQC\Forms Controlled\Prep Methods Inorganic rev l.doc 1/19/1 5 13 of 21 ALS Environmental Sample Results ALS Environmental—Rochester Laboratory 1 565 Jefferson Road, Building 300, Suite 360, Rochester, NY 14623 Phone (585) 288-5380 Fax (585) 288-8475 www.alsglobal.com RIGHT SOLUTIONS I RIGHT PARTNER 14 of 21 ALS Enuironmental ALS Environmental—Rochester Laboratory 1 565 Jefferson Road, Building 300, Suite 360, Rochester, NY 14623 Phone (585) 288-5380 Fax (585) 288-8475 www.alsglobal.com RIGHT SOLUTIONS I RIGHT PARTNER 15 of 21 ALS Group USA,Corp. dba ALS Environmental Analytical Report Client: GHD Services Inc. (Formerly Conestoga-Rovers&Associates, Service Request: R1902356 Project: Castle Hayne 258-402-D02-3100/6448-DM Date Collected: 03/19/19 11:50 Sample Matrix: Water Date Received: 03/20/19 09:45 Sample Name: MW-10(CPW-IOD) Basis: NA Lab Code: R1902356-001 Inorganic Parameters Analysis Analyte Name Method Result Units MRL Dil. Date Analyzed Date Extracted Q Chromium,Total 200.7 0.042 mg/L 0.010 1 03/21/19 18:25 03/21/19 Iron,Total 200.7 0.22 mg/L 0.10 1 03/21/19 18:25 03/21/19 Printed 4/2/2019 11:45:59 AM Superset Reference:19-0000502136 rev 00 16 of 21 ALS Group USA,Corp. dba ALS Environmental Analytical Report Client: GHD Services Inc. (Formerly Conestoga-Rovers&Associates, Service Request: R1902356 Project: Castle Hayne 258-402-D02-3100/6448-DM Date Collected: 03/19/19 12:40 Sample Matrix: Water Date Received: 03/20/19 09:45 Sample Name: MW-9(CPW-9D) Basis: NA Lab Code: R1902356-002 Inorganic Parameters Analysis Analyte Name Method Result Units MRL Dil. Date Analyzed Date Extracted Q Chromium,Total 200.7 0.017 mg/L 0.010 1 03/21/19 18:28 03/21/19 Iron,Total 200.7 0.10 U mg/L 0.10 1 03/21/19 18:28 03/21/19 Printed 4/2/2019 11:45:59 AM Superset Reference:19-0000502136 rev 00 17 of 21 ALS Environmental QC Summary F ALS Environmental—Rochester Laboratory 1 565 Jefferson Road, Building 300, Suite 360, Rochester, NY 14623 Phone (585) 288-5380 Fax (585) 288-8475 www.alsglobal.com RIGHT SOLUTIONS I RIGHT PARTNER 18 of 21 ALS Enuironmental ALS Environmental—Rochester Laboratory 1 565 Jefferson Road, Building 300, Suite 360, Rochester, NY 14623 Phone (585) 288-5380 Fax (585) 288-8475 www.alsglobal.com RIGHT SOLUTIONS I RIGHT PARTNER 19 of 21 ALS Group USA,Corp. dba ALS Environmental Analytical Report Client: GHD Services Inc. (Formerly Conestoga-Rovers&Associates, Service Request: R1902356 Project: Castle Hayne 258-402-D02-3100/6448-DM Date Collected: NA Sample Matrix: Water Date Received: NA Sample Name: Method Blank Basis: NA Lab Code: R1902356-MB Inorganic Parameters Analysis Analyte Name Method Result Units MRL Dil. Date Analyzed Date Extracted Q Chromium,Total 200.7 0.010 U mg/L 0.010 1 03/21/19 18:15 03/21/19 Iron,Total 200.7 0.10 U mg/L 0.10 1 03/21/19 18:15 03/21/19 Printed 4/2/2019 11:45:59 AM Superset Reference:19-0000502136 rev 00 20 of 21 ALS Group USA,Corp. dba ALS Environmental QA/QC Report Client: GHD Services Inc.(Formerly Conestoga-Rovers&Associates,Inc.) Service Request: R1902356 Project: Castle Hayne 258-402-D02-3100/6448-DM Date Analyzed: 03/21/19 Sample Matrix: Water Lab Control Sample Summary Inorganic Parameters Units:mg/L Basis:NA Lab Control Sample R1902356-LCS Analyte Name Analytical Method Result Spike Amount %Rec %Rec Limits Chromium,Total 200.7 0.210 0.200 105 85-115 Iron,Total 200.7 0.988 1.00 99 85-115 Printed 4/2/2019 11:45:59 AM Superset Reference:19-0000502136 rev 00 21 of 21