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Golder Associates NC, Inc. 5B Oak Branch Drive Greensboro, NC 27407 USA Tel: (336) 852-4903 Fax: (336) 852-4904 www.golder.com Engineering Lic. No. C-2862/Geology Lic. No. C-399 Golder, Golder Associates and the GA globe design are trademarks of Golder Associates Corporation
November 3, 2016 Project No. 0939668716
Ms. Jaclynne Drummond Compliance Hydrogeologist
North Carolina Department of Environmental Quality Division of Waste Management – Solid Waste Section
2090 US Highway 70 Swannanoa, North Carolina 28778
(828) 296-4706
RE: 14-DAY NOTIFICATION AND ALTERNATE SOURCE DEMONSTRATION
HANES MILL ROAD LANDFILL, PERMIT NO. 34-02
WINSTON-SALEM, NORTH CAROLINA
Dear Jackie:
On behalf of Winston-Salem/Forsyth County City/County Utilities Commission (CCUC), Golder Associates NC, Inc. (Golder) is submitting this 14-Day Notification as required by North Carolina Solid Waste
Management Regulation (NCSWMR) 15A North Carolina Administrative Code (NCAC) 13B .1633(c)(1). The 14-Day Notification of Groundwater Protection Standard Exceedance(s) form is included as
Attachment 1.
1.0 14-DAY NOTIFICATION [15A NCAC 13B .1633(C)(1)]
Tables 1 though 3 (shown below) summarize the NC Appendix I constituents that were detected at concentrations above their respective Solid Waste Section Reporting Limits (SWSLs) and NC 2L
Groundwater Standards or Solid Waste Section Groundwater Protection Standards (GPSs) during the second semiannual water quality monitoring event conducted at the closed unlined landfill, the closed
Subtitle D landfill, and the active Subtitle D landfill at the above-referenced facility between September 12 – 14, 2016. The laboratory certificates-of-analyses are included as Attachment 2. It is noted that the Closed
Unlined Landfill is in corrective action for volatile organic compounds (VOCs); therefore no notifications for groundwater standard exceedances for VOCs are required for this facility.
Table 1: 14-Day Notifications for the Closed Unlined Landfill
Constituent: Location: Result (µg/L): SWSL (µg/L): NC2L or GPS
(µg/L):
Approved
ASD:
Barium OW-3 993 700 100 No
Cobalt OW-3 10.7 10 1 No
Note: µg/L = micrograms per liter
Ms. Jaclynne Drummond November 3, 2016 NC DEQ, Solid Waste Section 2 Project No. 0939668716
Table 2: 14-Day Notifications for the Closed Subtitle D Landfill
Constituent: Location: Result (µg/L): SWSL (µg/L): NC2L or GPS
(µg/L):
Approved
ASD:
Arsenic MW-6 13.5 10 10 No
Chromium MW-11 14.3 10 10 No
Cobalt MW-6 16.5 10 1 No
Cobalt MW-7 14.5 10 1 No
Table 3: 14-Day Notification for the Active Subtitle D Landfill
Constituent: Location: Result (µg/L): SWSL (µg/L): NC2L or GPS
(µg/L):
Approved
ASD:
Cobalt MW-19 22.9 10 1 No
2.0 ALTERNATE SOURCE DEMONSTRATION [15A NCAC 13B .1633(C)(3)]
As allowed under 15A NCAC 13B .1633(C)(3), the CCUC has prepared an alternate source demonstration (ASD) in reference to the concentrations of inorganic compounds reported in samples from monitoring wells
from the closed unlined landfill, the closed Subtitle D landfill, and the active Subtitle D landfill, as shown above.
2.1 Statistical Analysis
The Summary of Statistical Analysis (Attachment 3) summarizes the statistical methods and results used to determine an appropriate background concentration for inorganic compounds detected at concentrations
above the SWSLs and NC 2L Standards or GPS in samples from downgradient monitoring wells at the closed unlined landfill, closed Subtitle D landfill, and active Subtitle D landfill during the September 2016
event. The statistical analyses were completed using WQStat software in accordance with 40 CFR 258 and Title 15A NCAC 13B .1632(f) through (h). The statistical summary sheets generated during the
statistical analysis are included as Attachment 3.
2.1.1 Closed Unlined Landfill
Historical analytical data for barium and cobalt from upgradient well MW-1RR were used to perform inter-well statistics for the closed unlined landfill. These data were used to establish background concentrations
for barium and cobalt at the closed unlined landfill. The inter-well background statistical limit for each inorganic constituent was based on the non-parametric prediction limit as allowed under Title 15A NCAC
13B .1632 (g)(3). The barium and cobalt concentrations in the sample from OW-3 were below the background concentrations calculated by inter-well statistical methods. This indicates that the barium and
cobalt concentrations in samples from downgradient well OW-3 are likely naturally occurring and have been verified with site field data using historical data collected at the facility.
2.1.2 Closed Subtitle D Landfill
Historical analytical data for arsenic, chromium, and cobalt from upgradient well MW-1RR were used to perform inter-well statistics for the closed Subtitle D landfill. These data were used to establish background
concentrations for arsenic, chromium, and cobalt at the closed Subtitle D landfill. The inter-well background statistical limit for each inorganic constituent was based on the non-parametric prediction limit as allowed
under Title 15A NCAC 13B .1632 (g)(3). The chromium and cobalt concentrations in downgradient monitoring wells were below the background concentrations calculated by inter-well statistical methods for
the closed Subtitle D landfill. The background concentration calculated using inter-well statistical methods for arsenic was below the concentration reported for MW-6 during the September 2016 event. Therefore, intra-well statistical methods were utilized to calculate statistical background for arsenic at MW-6. The
Ms. Jaclynne Drummond November 3, 2016 NC DEQ, Solid Waste Section 3 Project No. 0939668716
intra-well background statistical limit for arsenic in MW-6 was based on the non-parametric prediction limit
as allowed under Title 15A NCAC 13B .1632 (g)(3) and the September 2016 arsenic concentration at MW-6 is below the statistically determined background value. These data indicate that the concentrations of
arsenic, chromium, and cobalt are likely naturally occurring and have been verified with site field data using historical data collected at the facility.
2.1.3 Active Subtitle D Landfill
Historical analytical data for cobalt from upgradient well MW-12 were used to perform inter-well statistics
for the active Subtitle D landfill. These data were used to establish background concentrations for cobalt at the active Subtitle D landfill. The inter-well background statistical limit for cobalt was based on the non-
parametric prediction limit as allowed under Title 15A NCAC 13B .1632 (g)(3). The background concentration calculated by inter-well statistical methods for cobalt was below the concentration reported
for MW-19 during the September 2016 event. Therefore, intra-well statistical methods were utilized to calculate statistical background concentration for cobalt at MW-19. The intra-well background statistical
limit for cobalt in MW-19 is based on the upper tolerance prediction limit as allowed under Title 15A NCAC 13B .1632 (g)(3) and the September 2016 cobalt concentration at MW-19 is below statistically determined
background value. This indicates that the cobalt concentration at MW-19 is likely naturally occurring and has been verified with site field data using historical data collected at the facility.
2.2 Literature Review of Inorganic Concentrations
In addition to the statistical analysis, a desktop study was performed to determine the prevalence of arsenic, barium, chromium, and cobalt in soil and sediment in the general proximity of the Hanes Mill Road Landfill.
Twelve sediment samples collected within 20 miles of the Hanes Mill Road Landfill were present in the United States Geological Survey (USGS) National Geochemical Survey Database (as presented in
Attachment 4). As shown, arsenic concentrations range from non-detect to 12 parts-per-million (ppm) and barium concentrations range from 65 ppm to 2630 ppm. Chromium concentrations range from 3 ppm to
79 ppm and cobalt concentrations range from non-detect to 36 ppm. While a direct comparison between sediment sample concentrations and groundwater concentrations cannot be made, these data show that
the aforementioned inorganic constituents do occur naturally in stream sediment. Therefore, are likely to occur in subsurface soil at the Hanes Mill Road Landfill at concentrations that would account for the
concentrations of these constituents in groundwater.
3.0 CLOSING
The concentrations of barium and cobalt in the sample from OW-3 at the closed unlined landfill; arsenic in the sample from MW-6, chromium in the sample from MW-11, and cobalt in the samples from MW-6 and
MW-7 at the closed Subtitle D landfill; and cobalt in the sample from MW-19 at the active Subtitle D landfill are below the statistically calculated background values and therefore, the concentrations are considered
to represent “natural variations in groundwater quality” and appear to be naturally occurring. Further, the stream sediment concentrations of arsenic, barium, chromium, and cobalt presented in the USGS National
Geochemical Database were reported at concentrations much higher than the concentrations observed in groundwater samples. Therefore, the available data supports that the arsenic, barium, chromium, and
cobalt concentrations reported in groundwater samples from the Hanes Mill Road Landfill are naturally occurring and no further action is warranted. Data are generally consistent with historical data.
Unless otherwise directed by NC DEQ, the CCUC will continue monitoring the uppermost aquifer beneath the closed unlined landfill in accordance with the requirements of the Assessment Monitoring Program as
outlined in Title 15A NCAC 13B .1634 and will continue monitoring the uppermost aquifer beneath the closed and active Subtitle D landfills in accordance with the requirements of the Detection Monitoring
Program as outlined in Title 15A NCAC 13B .1633. A complete semi-annual report will be submitted under separate cover. The next compliance monitoring event for this facility is tentatively scheduled for March
2017. If you have any questions, please contact the undersigned at 336-852-4903.
ATTACHMENT 1
14-Day Notification of Groundwater Protection Standard Exceedance Form
ATTACHMENT 2
Laboratory Certificates-of-Analyses
Closed Unlined Landfill
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Page 1 of 1
GOLDER TMSOCIATES NC, INC. QUALITY TMSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 1 of 3
Project Name: Hanes Mill Landfill – Closed Unlined
Project Reference Number: 0939-668716.100
Sampling Event Date: September 14-15, 2016
Review Date: October 28, 2016 Initials: TM
Report #: CZ13503, CZ13504, CZ13502
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
NC Appendix I
NC Appendix I + Detects
X NC Appendix II
NC Subtitle D Leachate List
Other: MW-1RR: App II + methane, ethane, ethane and MNA parameters
1.0 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 TMSOCIATES NC, INC. QUALITY TMSURANCE & 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
SW-846 Method 376.1 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.
Lab Blank
o Barium @ 1.08 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 Trichloroethene was outside of control limits for the 8260B MS and MSD samples. The QC batch was approved on acceptable LCS recovery of this analyte. 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.
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
GOLDER TMSOCIATES NC, INC. QUALITY TMSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
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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 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.
Lab Blank o Barium @ 1.08 ug/L (J) Field Blank o Copper @ 3.72 ug/L (J)
B-flags
o Copper: MW-1RR @ 2.41 ug/L (J), Barium: OW-13D @ 4.60 ug/L (J) 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 Reporting Limits-SWSLs). 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 (GPS) in wells or field/equipment/trip blanks or above applicable Surface Water Standards for surface
water points.
Vanadium (SWS GWPS = 0.3 ug/L)
o OW-7DA @ 6.94 ug/L (J)
o OW-11 @ 1.73 ug/L (J) o MW-1RR @ 1.72 ug/L (J)
N/A 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).
N/A Other report issues/Communications with laboratory/etc.:
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Page 1 of 1
GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 1 of 4
Project Name: Hanes Mill Landfill – Closed Unlined MNA
Project Reference Number: 0939-668716.100
Sampling Event Date: September 14, 2016
Review Date: October 28, 2016 Initials: TM
Report #: CZ13504, CZ13502
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
NC Appendix I
NC Appendix I + Detects
X NC Appendix II
NC Subtitle D Leachate List
Other: Methane, Ethane, Ethene, Chloride, Mercury, Nitrate, Nitrite, Sulfate, & TOC
1.0 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 4
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
SW-846 Method 376.1 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.
Barium @ 1.08 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).
The 8260B surrogate spike recovery of Dibromofluoromethane exceeded acceptance
criteria for the Trip Blank. The sample was approved based on acceptable recovery of the
other surrogate standards.
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 recoveries of Alkalinity, Nitrate/Nitrite (NOx), and Sulfide were outside of control
limits for the MS and/or MSD samples, and precision between duplicate spikes of NOx
exceeded acceptance criteria. The QC batches were approved based on acceptable LCS
recovery of these analytes.
The spike recovery of Trichloroethene was outside of control limits for the 8260B MS and
MSD samples. The QC batch was approved based on acceptable LCS recovery of this
analyte.
4.0 ANALYTE LISTS/METHODS
TM The proper number of constituents are present for each analyte list as identified
above (including detects where applicable).
GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 3 of 4
TM Proper EPA SW-846 analytical methods were used for analysis.
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 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.
Lab Blank
o Barium @ 1.08 ug/L (J)
Field Blank
o Copper @ 3.72 ug/L (J)
B-flags (Copper)
o OW3 @ 2.19 ug/L (J), OW10D @ 1.67 ug/L (J), OW12 @ 1.65 ug/L (J)
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.
Chloride (x3)
o OW-3
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 Reporting Limits-SWSLs). 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 (GPS) in wells or
field/equipment/trip blanks or above applicable Surface Water Standards for surface water points.
Barium (NC 2L = 700 ug/L) o OW-3 @ 993 ug/L
Cobalt (GWPS = 1 ug/L) o OW-3 @ 10.7 ug/L o OW-4 @ 2.24 ug/L (J)
GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 4 of 4
Vanadium (GWPS = 0.3 ug/L) o OW-10D @ 0.50 ug/L (J)
o OW-12 @ 1.63 ug/L (J) o OW-14D @ 3.57 ug/L (J)
Benzene (NC 2L = 1 ug/L) (EPA MCL = 5 ug/L)
o OW-3 @ 4.8 ug/L o OW-4 @ 1.1 ug/L
1,1-Dichloroethane (NC 2L = 6 ug/L)
o OW-10D @ 11 ug/L
1,2-Dichloroethane (NC 2L = 0.4 ug/L) o OW-3 @ 0.64 ug/L
1,2-Dichloropropane (NC 2L = 0.6 ug/L)
o OW-3 @ 1.4 ug/L
1,4-Dichlorobenzene (NC 2L = 6 ug/L) o OW-3 @ 28 ug/L
o OW-4 @ 6.7 ug/L
Cis-1,2 Dichloroethene (NC 2L = 70 ug/L) (EPA MCL = 70 ug/L) o OW-3 @ 82 ug/L
Tetrachloroethene (NC 2L = 0.7 ug/L) (EPA MCL = 5 ug/L)
o OW-4 @ 4.7 ug/L o OW-10D @ 4.7 ug/L
Trichloroethene (NC 2L = 3 ug/L) (EPA MCL = 5 ug/L)
o OW-4 @ 6.9 ug/L o OW-10D @ 4.7 ug/L
o OW-17D @ 10 ug/L
Vinyl chloride (NC 2L = 0.03 ug/L) (EPA MCL = 2 ug/L) o OW-3 @ 62 ug/L
o OW-4 @ 0.87 ug/L (J) o OW-10D @ 0.50 ug/L (J)
N/A 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).
N/A Other report issues/Communications with laboratory/etc.:
Unlined Subtitle D Landfill
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Page 1 of 1
GOLDER TMSOCIATES NC, INC. QUALITY TMSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 1 of 4
Project Name: Hanes Mill Landfill – Closed Sub D
Project Reference Number: 0939-668716.101
Sampling Event Date: September 13, 2016
Review Date: October 28, 2016 Initials: TM
Report #: CZ13452, CZ13502
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
NC Appendix I + Detects
NC Appendix II
NC Subtitle D Leachate List
Other:
1.0 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.
Notes:
GOLDER TMSOCIATES NC, INC. QUALITY TMSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 2 of 4
2.0 SAMPLE HOLDING TIMES
TM Holding times for extraction and/or analysis were met for each analytical method (see below for reference).
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
SW-846 Method 376.1 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.
Lab Blank
o Barium @ 1.08 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).
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.
5.0 DATA REPORTING
TM All analytical reporting associated with the event was performed by the contracted lab.
GOLDER TMSOCIATES NC, INC. QUALITY TMSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 3 of 4
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 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.
Lab Blank o Barium @ 1.08 ug/L (J)
Field Blank o Copper @ 3.72 ug/L (J)
B-flags
o Copper: MW-6, MW-7, MW-8, MW-9, MW-11
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 Reporting Limits-SWSLs). 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 (GPS) in wells or
field/equipment/trip blanks or above applicable Surface Water Standards for surface
water points.
Arsenic (GWPS = 10 ug/L) o MW-6 @ 13.5 ug/L
Chromium (NC 2L = 10 ug/L) o MW-11 @ 14.3 ug/L
Cobalt (GWPS = 1 ug/L)
o MW-6 @ 16.5 ug/L o MW-7 @ 14.5 ug/L
Vanadium (GWPS = 0.3 ug/L)
o MW-6D @ 1.86 ug/L (J) o MW-8 @ 2.0 ug/L (J)
N/A 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).
GOLDER TMSOCIATES NC, INC. QUALITY TMSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 4 of 4
N/A Other report issues/Communications with laboratory/etc.
Active Subtitle D Landfill
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Page 1 of 1
GOLDER TMSOCIATES NC, INC. QUALITY TMSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 1 of 3
Project Name: Hanes Mill Landfill – Active Sub D
Project Reference Number: 0939-668716.102
Sampling Event Date: September 13, 2016
Review Date: October 28, 2016 Initials: TM
Report #: CZ13451, CZ13502
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
NC Appendix I + Detects
NC Appendix II
NC Subtitle D Leachate List
Other:
1.0 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.
Notes:
GOLDER TMSOCIATES NC, INC. QUALITY TMSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 2 of 3
2.0 SAMPLE HOLDING TIMES
TM Holding times for extraction and/or analysis were met for each analytical Method (see below for reference).
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
SW-846 Method 376.1 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
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 recoveries of 1,1- Dichloroethene and Trichloroethene were outside of control
limits for the 8260B MS and/or MSD samples. The QC batch was approved based on acceptable recovery of these analytes.
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.
5.0 DATA REPORTING
TM All analytical reporting associated with the event was performed by the contracted lab.
GOLDER TMSOCIATES NC, INC. QUALITY TMSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 3 of 3
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 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.
Field Blank o Copper @ 3.72 ug/L (J)
B-flags o Copper: MW-15, MW-16, MW-18, MW-19, MW-21
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 Reporting Limits-SWSLs). 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 (GPS) in wells or
field/equipment/trip blanks or above applicable Surface Water Standards for surface
water points.
Cobalt (GWPS = 1 ug/L) o MW-19 @ 22.9 ug/L
o MW-21 @ 1.20 ug/L (J) o MW-22 @ 1.46 ug/L (J)
Vanadium (GWPS = 0.3 ug/L)
o MW-12 @ 2.29 ug/L (J) o MW-13 @ 4.17 ug/L (J) o MW-15 @ 2.95 ug/L (J) o MW-16 @ 4.37 ug/L (J)
o MW-17 @ 2.43 ug/L (J) o MW-18 @ 1.70 ug/L (J)
o MW-21 @ 1.64 ug/L (J)
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).
N/A Other report issues/Communications with laboratory/etc.:
ATTACHMENT 3
Summary of Statistical Analysis and Statistics Summary Sheets
October 2016 Page 1 of 1 0939-668716
G:\PROJECTS\Winston-Salem-Forsyth County\Groundwater\WQMR\Sept 2016\2016.10.Notification & ASD\Stats\Hanes Mill Road CLF Stats Summary Sept 2016.xlsx
OW-3 OW-4 OW-6 OW-7DA OW-10D OW-11 OW-12 OW-13D OW-14D OW-17D
Barium ug/L Interwell Non-Parametric Prediction Interval 12000 993 153 48.1 J 5.81 J 26.7 J 134 52.9 J 4.60 J 22.2 J 40.0 J
Cobalt ug/L Interwell Non-Parametric Prediction Interval 800 10.7 2.24 J ND ND ND ND ND ND ND ND
MW-6 MW-6D MW-7 MW-8 MW-9 MW-11InterwellNon-Parametric Prediction Interval 5.8
Intrawell MW-6 Non-Parametric Prediction Interval 16.0
Chromium ug/L Interwell Non-Parametric Prediction Interval 6800 ND 2.31 J ND ND ND 14.3Cobaltug/L Interwell Non-Parametric Prediction Interval 800 16.5 ND 14.5 ND ND ND
MW-13 MW-14 MW-15 MW-16 MW-17 MW-18 MW-19 MW-20 MW-21 MW-22
Interwell Non-Parametric Prediction Limit 1.10
MW-19 Intrawell Tolerance Prediction Limit 52.0
Notes:1. Shaded values represent apparent statistical significant increases (SSIs) over background concentrations.
2. Statistical worksheets are provided in Appendix C.
3. ug/L = micrograms per liter
4. J = estimated concentration below the Solid Waste Section Limit5. ND = Not detected at the laboratory detection limit
6. B = Blank-qualified data
7. --- = data not available
ATTACHMENT 2
Summary of Statistical Analysis
Hanes Mill Road Landfill, Permit No. 34-02
Forsyth County, North Carolina
ND ND NDArsenicug/L 13.5 ND ND
September 2016
Closed Subtitle D Landfill Downgradient Monitoring Wells and Concentrations
Detected Monitoring
Constituent/Analytes
Reporting
Units Statistical Evaluation Method Prediction
Interval
Detected Monitoring
Constituent/Analytes
Reporting
Units
Prediction
IntervalStatistical Evaluation Method
Closed Unlined Landfill Downgradient Monitoring Wells and Concentrations
September 2016
September 2016Detected Monitoring
Constituent/Analytes
Reporting
Units Statistical Evaluation Method
Prediction
Interval
Active Subtitle D Landfill Downgradient Monitoring Wells and Concentrations
Cobalt ug/L ND ND ND 1.20 J 1.46 JNDNDND22.9 ND
Closed Unlined Landfill
Unlined Subtitle D Landfill
Active Subtitle D Landfill
ATTACHMENT 4
USGS National Geochemical Survey Database Summary
October 2016 1 of 1 0939668716
G:\PROJECTS\Winston-Salem-Forsyth County\Groundwater\WQMR\Sept 2016\2016.10.Notification & ASD\Attachment 4.xlsx
NURE
Record ID Lab ID
Collection
Date Datum Latitude Longitude Medium Source Units Arsenic Barium Cobalt Chromium
5282810 C-110092 09/12/76 NAD27 35.9952 -80.2418 Sediment Stream ppm ND 2630 ND 8
5282822 C-110100 09/12/76 NAD27 35.9098 -80.2140 Sediment Stream ppm ND 1570 ND 3
5282670 C-110270 09/09/76 NAD27 35.9945 -80.0553 Sediment Stream ppm 12 174 12 7
5282584 C-110403 07/13/76 NAD27 35.9876 -80.5241 Sediment Stream ppm ND 65 36 795289680C-110410 07/13/76 NAD27 36.2632 -80.2747 Sediment Stream ppm ND 1000 11 31
5289312 C-110490 07/14/76 NAD27 36.0003 -80.4473 Sediment Stream ppm ND 348 14 28
5289485 C-110871 07/21/76 NAD27 36.2239 -80.0316 Sediment Stream ppm 12 684 8 13
5289579 C-143129 07/11/76 NAD27 36.4035 -80.1033 Sediment Stream ppm ND 267 14 42
5289450 C-143367 07/17/76 NAD27 36.1168 -80.3382 Sediment Stream ppm ND 294 10 31
5289661 C-143413 07/12/76 NAD27 36.3345 -80.3890 Sediment Stream ppm ND 464 7 30
5289470 C-143440 07/17/76 NAD27 36.2319 -80.4357 Sediment Stream ppm ND 1090 5 275282800C-144593 09/12/76 NAD27 35.9375 -80.3027 Sediment Stream ppm ND 2440 4 16
Average 2 919 10 26
Notes:
1. NURE = National Uranium Resource Evaluation
2. ID = identification
3. ND = non-detect4. Inorganic analysis performed by ICP40.
5. ppm = parts per million
6. Sample locations are within 20 miles of the Hanes Mill Road Landfill
7. Source of data is the United States Geological Survey National Geochemical Survey Database.
ATTACHMENT 4
USGS National Geochemical Survey Database SummaryHanes mill Road Landfill, Permit No. 34-02