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Home My WebLink About6301_Moore_CDLF_MSWLF_BlakeGW_FID1088131_20171212Page 1 of 15 Page 2 of 15 Page 3 of 15 Page 4 of 15 Page 5 of 15 Page 6 of 15 Page 7 of 15 Page 8 of 15 Page 9 of 15 Page 10 of 15 Page 11 of 15 Page 12 of 15 Page 13 of 15 Page 14 of 15 Page 15 of 15 Page 1 of 1 GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 3 Project Name: Moore County Landfill – Blake Residence Project Reference Number: 073-9615017.100 Sampling Event Date: December 14, 2017 Review Date: February 2, 2018 Initials: TM Report #: CA14786 Person(s) performing the review are to initial each item on this form as acknowledgement of data acceptance, or as acknowledgement of a review issue. In the case of the latter, a brief explanation should follow the applicable item. Golder Associates Inc. has reviewed the laboratory certificates of analysis, chain-of-custody form, and laboratory provided sample group quality assurance and quality control data for the above referenced sample group to identify potential bias or inaccuracy, in general accordance with the following United States Environmental Protection Agency documents: • Region III Modifications to Functional Guidelines for Organic Data Review Multi-Media, Multi-Concentration, September 1994; • Region III Modifications to the Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, April 1993; and • Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, July 1998. COMPLIANCE ANALYTE LIST(S) (check all that apply) NC Closed Facility/C & D List X NC Appendix I VOAs + RCRA Metals NC Appendix I + Detects NC Appendix II NC Subtitle D Leachate List Other: 2.0 CHAIN OF CUSTODY (COC) REVIEW TM COC was properly signed by all parties. TM Correct project name and number are on the form. TM Sample receipt condition at laboratory was acceptable. TM Each sample and blank submitted for analysis appears in the report. 2.0 SAMPLE HOLDING TIMES TM Holding times for extraction and/or analysis were met for each analytical Method (see below for reference). GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 2 of 3 Review Criteria Method Analytes Holding Time SW-846 Method 8260 and 8011 VOCs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-846 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature requirements) SW-846 Method 7470 Mercury 28 days SM18 4500-S2 D Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW TM Laboratory analyzed at least one internal blank for each method, where applicable. TM Laboratory blank is interference-free. • Silver @ 1.95 ug/L (J) TM Surrogate recoveries are provided for each analytical method, where applicable. TM Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). TM MS/MSD/LCS data results are provided for each analytical method. TM MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). • The spike recovery of selenium was outside of control limits for the 6020B MSD sample. The QC batch was approved based on acceptable LCS recovery of this element. 4.0 ANALYTE LISTS/METHODS TM The proper number of constituents are present for each analyte list as identified above (including detects where applicable). TM Proper EPA SW-846 analytical methods were used for analysis. Notes: 5.0 DATA REPORTING TM All analytical reporting associated with the event was performed by the contracted lab. TM Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been ‘flagged’ with a ‘B’ where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 10X for commonly detected laboratory GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 3 of 3 contaminants-acetone, methylene chloride and phthalates), list below with explanation if flags should be removed. If flags need to be added for samples, also list below. TM It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor. TM The report provides the reporting limit for each constituent. TM The results were reported at or below their proper reporting limits (e.g., NC Solid Waste Section RLs). Those that are not reported correctly are listed below (by constituent) with the proper reporting limit listed beside them. State if the reporting limit error is due to dilutions. TM No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards or Groundwater Protection Standards in wells, surface points, or field/equipment/trip blanks. • Lead (NC 2L = 15 ug/L)  Blake Residence @ 15.6 ug/L TM No quantifiable inorganic or organic constituents were detected in a well or surface water point at concentrations outside of their historical range (more than 5X previous concentrations or first-time detections). • Cadmium first time detection @ 0.371 ug/L (J) first time detection TM Other report issues/Communications with laboratory/etc.: