3608_WMGastoniaTrans_SoilAssmtRPT_DIN27265_20161221

Golder Associates NC, Inc. 5B Oak Branch Drive Greensboro, NC. 27407 USA Tel: [phone] Fax: [phone] 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
December 21, 2016 1667099.01
Mr. Ervin Lane, Hydrogeologist
Department of Environmental Quality Division of Waste Management
Solid Waste Section 1646 Mail Service Center
Raleigh, North Carolina 27699 [e-mail]
RE: SOIL SAMPLING AND ANALYSIS REPORT
GASTONIA TRANSFER STATION, PERMIT NO. 3608-TRANSFER-1993
GASTON COUNTY, NORTH CAROLINA
Dear Ervin:
On behalf of the Waste Management of Carolinas, Inc. (Waste Management), Golder Associates NC, Inc.
(Golder) is submitting this summary of soil sampling results related to a leachate release that that was identified during an inspection by the North Carolina Department of Environmental Quality (NC DEQ)
representatives on October 12, 2016, at Gastonia Transfer Station. The source of the release was loaded trailers that were leaking liquid onto the ground, which flowed across the parking lot into a grassy area.
After the discovery, Waste Management revised facility practices to prevent future releases.
As proposed in the Soil Sampling Plan, dated November 17, 2016, and approved by the NC DEQ on
November 21, 2016, six soil samples were collected at the locations shown on the attached Soil Sampling Location Map (Figure 2). The locations of the samples were adjusted at the time of sampling from the Soil
Sampling Plan due to field conditions. Two soil samples were collected outside the area of disturbance to provide background data (Background 1 and 2). Two samples were collected from the location where leaks
were observed from the trailers (Trailer Area 1 and 2). A soil sample was also collected from the point of confluence in a drainage in the grassy area near the trailer parking area. An additional soil sample was
collected further downgradient in the drainage feature, just before a drop inlet that directs water to the sediment pond.
The samples were shipped to Environmental Conservation Laboratories (ENCO) of Cary, NC under chain-of-custody control. Soil samples were analyzed for the NC Appendix I list of constituents plus sulfate,
nitrate, and total phosphorous. The analytical results are summarized in Table 1 and the laboratory report, which are included as attachments.
Soil sample results were compared to the NC DEQ Inactive Hazardous Sites Branch, Preliminary Soil Remediation Goals Table’s Preliminary Residential Health-Based Remediation Goals (Residential Goals),
Preliminary Industrial Health-Based Remediation Goals (Industrial Goals), and Protection of Groundwater Soil Remediation Goals (Protection of Groundwater Goals) as shown on Table 1. Arsenic was detected at
quantifiable concentrations above the Residential Goal, the Industrial Goal, and the Protection of Groundwater Goal in Background 1, Trailer Area 1, Trailer Area 2, Confluence, and Downgradient samples.
Arsenic was also detected at a quantifiable concentration above the Residential Goal and the Industrial Goal in the Background 2 sample. Cobalt was detected at quantifiable concentrations above the
Residential Goal and the Protection of Groundwater Goal in Background 2, Trailer Area 1, Trailer Area 2, Confluence, and Downgradient samples. Cobalt was also detected at a quantifiable concentration above
the Protection of Groundwater Goal in the Background 1 sample. Selenium was detected at quantifiable concentrations above the Protection of Groundwater Goal in Background 1, Trailer Area 2, Confluence, and
Mr. Ervin Lane, Hydrogeologist December 21, 2016
NC DEQ DWM, Solid Waste Section 3 1667099.01

Attachments: Figure 1: Soil Sampling Location Map Figure 2: Proposed Excavation Plan
Table 1: Summary of Detected Constituents in Soil Samples Table 2: USGS National Geochemical Survey Database Summary
Laboratory Certificates-of-Analysis Laboratory Certificates-of-Analysis Review Form
C: Shawn P. Carroll, Environmental Protection Manager, Waste Management, 3920 River Road, Wilmington, NC 28411. 910-274-8869. [e-mail]
Dan Moore, PG, Environmental Protection Manager, Waste Management, 3303 North Glenn Avenue, Winston Salem, North Carolina 27105. 336-253-0091. [e-mail]
Kim Sue, Environmental Senior Specialist, North Carolina Department of Environmental Quality, Division of Waste Management – Solid Waste Section, 610 East Center Avenue, Suite 301,
Mooresville, NC 28115. 704-235-2163. [e-mail]
g:\projects\waste management\greater charlotte hauling\2016 leachate release response\soil sampling and analysis report\final soil sampling report - gastonia ts.docx
TRAILER AREA 2
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GASTONIA TRANSFER STATION
PERMIT NO. 3608
WASTE MANAGEMENT OF CAROLINAS, INC.
 SOIL SAMPLING LOCATION
TITLE
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1. AERIAL PHOTOGRAPH OBTAINED FROM WWW.NCONEMAP.NET
NOTE(S)
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1667099
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GASTONIA TRANSFER STATION
PERMIT NO. 3608
WASTE MANAGEMENT OF CAROLINAS, INC.
PROPOSED EXCAVATION PLAN
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1. AERIAL PHOTOGRAPH OBTAINED FROM WWW.NCONEMAP.NET
NOTE(S)
December 2016 1 of 1 1667099.01
G:\PROJECTS\Waste Management\Greater Charlotte Hauling\2016 Leachate Release Response\Soil Sampling and Analysis Report\GTS Soil Summary Table.xlsx
PARAMETER UNITS
Antimony mg/kg dry 6.20 94 0.90 ND 0.858 J ND ND 2.51 J 3.21 J ND
Arsenic mg/kg dry 0.68 3.00 5.80 6.23*4.55*34.3*7.77*16.5*7.05*ND
Barium mg/kg dry 3000 44000 580 23.2 227 57.6 67.7 92.6 94.7 ND
Beryllium mg/kg dry 32 460 63 0.103 0.583 0.0935 J 0.141 J ND ND ND
Chromium mg/kg dry 24000 1000000 360000 12.0 0.993 17.3 9.86 9.94 19.3 ND
Cobalt mg/kg dry 4.60 70 0.90 1.79 22.4 11.5 11.8 11.7 10.3 ND
Copper mg/kg dry 620 9400 700 20.3 21.7 35.3 31.7 40.8 38.3 ND
Lead mg/kg dry 400 800 270 5.39 24.0 5.66 6.24 6.86 7.82 ND
Nickel mg/kg dry 300 4400 130 1.27 J 1.50 J 7.71 J 3.50 J 4.40 J 8.26 J ND
Selenium mg/kg dry 78 1160 2.10 3.32 ND 2.50 J 6.86 4.97 5.44 ND
Silver mg/kg dry 78 1160 3.40 0.889 0.253 J 1.72 J 1.50 J 1.78 J 1.70 J ND
Thallium mg/kg dry 0.16 2.40 0.28 ND ND ND ND 4.42*J 4.88*J ND
Vanadium mg/kg dry 78 1160 6.00 38.0 8.75 67.8 64.5 74.8 72.4 ND
Zinc mg/kg dry 4600 70000 1200 6.34 16.6 21.5 24.8 33.2 33.9 ND
2-Butanone mg/kg dry 5400 28400 16 ND ND 0.006 0.005 J ND ND ND
Acetone mg/kg dry 12200 100000 24 ND ND 0.053 0.052 ND ND ND
Nitrate as N mg/kg dry 26000 100000 --ND ND 2.2 J ND 3.7 J 5.8 J ND
Phosphorus mg/kg dry 0.32 4.60 --130*470*460*280*410*260*ND
Sulfate as SO4 mg/kg dry ------73 ND 3400 310 180 76 ND
pH pH Units ------4.4 7.4 7.5 7.4 7.8 7.9 ND
Notes:mg/kg = milligrams per kilogram
ND = not detected above MDL
J = estimated concentration below the MQL
-- =no data available
Blanks =laboratory method blanks and trip blank
Bold =concentration exceeds Preliminary Residential Health-Based Remediation Goal
* =concentration exceeds Preliminary Industrial Health-Based Remediation Goal
Highlighted =concentration exceeds Protection of Groundwater Soil Remediation Goal
1)Preliminary Residential and Industrial Health-Based Remediation Goals and Protection of Groundwater Soil Remediation Goals are from the Inactive Hazardous Sites Branch Preliminary Soil Remediation Goals
Table, October 2016.
BACKGROUND 1 BACKGROUND 2 TRAILER AREA 1 TRAILER AREA 2 CONFLUENCE DOWNGRADIENT BLANKS
TABLE 1
Summary of Detected Constituents in Soil Samples
Gastonia Transfer Station
PRELIMINARY
RESIDENTIAL
HEALTH-BASED
REMEDIATION
GOALS
PRELIMINARY
INDUSTRIAL
HEALTH-BASED
REMEDIATION
GOALS
PROTECTION OF
GROUNDWATER
SOIL
REMEDIATION
GOALS
December 2016 1 of 1 1667099.01
G:\PROJECTS\Waste Management\Greater Charlotte Hauling\2016 Leachate Release Response\Soil Sampling and Analysis Report\GTS Soil Summary Table.xlsx
NURE
Record ID Lab ID
Collection
Date Datum Latitude Longitude Medium Source Units Antimony Arsenic Barium Beryllium Chromium Cobalt Copper Lead Nickel Selenium Silver Thallium Vanadium Zinc
5282362 C-110838 08/03/76 NAD27 35.6042 -81.2385 Sediment Stream ppm --ND 412 ND 17 12 11 22 19 --ND 0.77 79 42
5282394 C-210847 08/02/76 NAD27 35.5984 -81.0948 Sediment Stream ppm --ND 302 2 35 21 22 9 40 --ND 0.414 26 82
5282400 C-110108 08/02/76 NAD27 35.5691 -81.0353 Sediment Stream ppm --ND 1600 ND 5 3 2 35 7 --ND 0.94 53 30
5283194 C-143791 08/09/76 NAD27 35.5174 -81.0974 Sediment Stream ppm --ND 742 ND 23 4 7 18 6 --ND 0.464 33 24
5283202 C-110107 08/09/76 NAD27 35.4842 -81.0403 Sediment Stream ppm --ND 1830 1 17 8 8 30 13 --ND 0.69 88 41
5283210 C-110848 08/09/76 NAD27 35.4233 -81.0889 Sediment Stream ppm --ND 354 ND 2 4 9 25 5 --ND 0.5 63 35
5282876 C110335 08/12/76 NAD27 35.3976 -81.1996 Sediment Stream ppm --10 457 1 9 12 16 54 18 --ND 0.5 78 48
5282980 C-210835 07/18/76 NAD27 35.5353 -80.823 Sediment Stream ppm --ND 1850 2 21 7 11 25 12 --ND 0.752 116 44
5282836 C143860 08/13/76 NAD27 35.3807 -81.4187 Sediment Stream ppm --ND 276 ND 39 6 14 17 23 --ND 0.512 54 48
5282466 C-110824 08/10/76 NAD27 35.4101 -81.4624 Sediment Stream ppm --ND 365 ND 29 7 9 55 15 --ND 0.57 60 50
5282466 C-110815 08/10/76 NAD27 35.4101 -81.4624 Sediment Stream ppm --ND 182 ND 11 5 7 18 22 --ND 0.4 43 37
5282558 C-143804 08/11/76 NAD27 35.2295 -81.4331 Sediment Stream ppm --ND 382 2 10 2 5 52 3 --ND 0.524 15 32
5282914 C-143871 08/13/76 NAD27 35.2594 -81.2788 Sediment Stream ppm --ND 213 ND 28 11 18 33 10 --ND 0.44 85 53
5282918 C-110738 08/13/76 NAD27 35.2382 -81.2434 Sediment Stream ppm --ND 909 ND 4 4 3 30 7 --ND 0.53 77 20
5282932 C-210820 08/13/76 NAD27 35.1749 -81.191 Sediment Stream ppm --ND 579 1 14 8 19 19 11 --ND 0.552 99 78
5283304 C-210837 09/18/76 NAD27 35.2426 -80.951 Sediment Stream ppm --ND 224 1 49 20 45 27 21 --ND 0.517 233 76
5283328 C-143544 09/18/76 NAD27 35.093 -80.9243 Sediment Stream ppm --13 538 1 89 36 33 23 22 --ND 2.535 131 133
5283416 C-143320 09/20/76 NAD27 35.186 -80.713 Sediment Stream ppm --ND 178 ND 69 16 21 16 10 --ND 1.015 149 39
Average --1 633 1 26 10 14 28 15 --ND 0.701 82 51
Notes:
1. NURE = National Uranium Resource Evaluation
2. ID = identification
3. ND = non-detect
4. Inorganic analysis performed by ICP40.
5. ppm = parts per million
6. Sample locations are within 25 miles of the Hanes Mill Road Landfill
7. Source of data is the United States Geological Survey National Geochemical Survey Database.
TABLE 2
USGS National Geochemical Survey Database Summary
Gastonia Transfer Station
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Page 1 of 1
GOLDER ASSOCIATES INC.
QUALITY ASSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 1 of 5

Project Name: Gastonia Transfer Station
Project Reference Number: 1667099.01
Sampling Event Date: November 21, 2016
Review Date: December 15, 2016 Initials: DR
Report #: CZ17057
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 List (.500 Rules) NC C & D List (New Rules) NC Appendix I NC Appendix I + Detects NC Appendix II
NC Subtitle D Leachate List Other: Nitrate, Phosphorous, Sulfate, pH

1.0 CHAIN OF CUSTODY (COC) REVIEW
DR COC was properly signed by all parties.
DR Correct project name and number are on the form.
DR Sample receipt condition at laboratory was acceptable.
DR Each sample and blank submitted for analysis appears in the report.

GOLDER ASSOCIATES INC.
QUALITY ASSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 2 of 5

2.0 SAMPLE HOLDING TIMES
DR 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
DR Laboratory analyzed at least one internal blank for each method, where applicable.
DR Laboratory blank is interference-free.
Methylene chloride detected in Method Blank at 0.003 mg/kg wet
DR Surrogate recoveries are provided for each analytical method, where applicable.
DR Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range).
DR MS/MSD/LCS data results are provided for each analytical method.
DR 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 Toluene was outside of control limits for the MS and MSD samples.
The QC batch was approved based on acceptable LCS recovery of this analyte.

The spike recoveries of Antimony, Arsenic, Cadmium, and Vanadium were outside of
control limits for the 6010D MS, MSD, and/or Post Spike samples. The QC batch was
approved based on acceptable LCS recovery of these elements.

The spike recovery of Phosphorus was outside of control limits for the MS and MSD
samples. The QC batch was approved based on acceptable LCS recovery of this analyte.

4.0 ANALYTE LISTS/METHODS
DR The proper number of constituents are present for each analyte list as identified above (including detects where applicable).
DR Proper EPA SW-846 analytical methods were used for analysis.
GOLDER ASSOCIATES INC.
QUALITY ASSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 3 of 5

5.0 DATA REPORTING
DR All analytical reporting associated with the event was performed by the contracted lab.
DR 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.
Methylene chloride detected in Method Blank at 0.003 mg/kg wet
DR 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.
VOCs by GCMD diluted 1.36x for Background 1

VOCs by GCMD diluted 1.33x for Confluence
VOCs by GCMD diluted 1.25x for Downgradient

Metals by EPA 6000/7000 diluted 5x for Trailer Area 1, Trailer Area 2, Confluence, and
Downgradient

Phosphorus diluted 3.02x for Trailer Area 1 and Confluence

Phosphorus diluted 1.76x for Trailer Area 2

Phosphorus diluted 2x for Downgradient

Sulfate diluted 5x for Trailer Area 1
DR The report provides the reporting limit for each constituent.
DR The results were reported at or below their proper reporting limits (i.e., MDLs with SWSLs reported). 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.
DR No organic constituents were reported above their respective SWSLs, and no inorganic or organic
constituents were reported above their respective NC 2L Drinking Water Standards/GWPS in wells, or field/equipment/trip blanks, or above applicable surface water standards in surface water points.

PRELIMINARY RESIDENTIAL HEALTH-BASED REMEDIATION GOALS

Arsenic (0.68 mg/kg)
Background 1 @ 6.23 mg/kg
Background 2 @ 4.55 mg/kg
Trailer Area 1 @ 34.3 mg/kg
Trailer Area 2 @ 7.77 mg/kg
Confluence @ 16.5 mg/kg
Downgradient @ 7.05 mg/kg

GOLDER ASSOCIATES INC.
QUALITY ASSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 4 of 5

Cobalt (4.60 mg/kg)
Background 2 @ 22.4 mg/kg
Trailer Area 1 @ 11.5 mg/kg
Trailer Area 2 @ 11.8 mg/kg
Confluence @ 11.7 mg/kg
Downgradient @ 10.3 mg/kg

Thallium (0.16 mg/kg)
Confluence @ 4.42 mg/kg J
Downgradient @ 4.88 mg/kg J

Phosphorus (0.32 mg/kg)
Background 1 @ 130 mg/kg
Background 2 @ 470 mg/kg
Trailer Area 1 @ 460 mg/kg
Trailer Area 2 @ 280 mg/kg
Confluence @ 410 mg/kg
Downgradient @ 260 mg/kg

PRELIMINARY INDUSTRIAL HEALTH-BASED REMEDIATION GOALS

Arsenic (3.00 mg/kg)
Background 1 @ 6.23 mg/kg
Background 2 @ 4.55 mg/kg
Trailer Area 1 @ 34.3 mg/kg
Trailer Area 2 @ 7.77 mg/kg
Confluence @ 16.5 mg/kg
Downgradient @ 7.05 mg/kg

Thallium (2.40 mg/kg)
Confluence @ 4.42 mg/kg J
Downgradient @ 4.88 mg/kg J

Phosphorus (4.60 mg/kg)
Background 1 @ 130 mg/kg
Background 2 @ 470 mg/kg
Trailer Area 1 @ 460 mg/kg
Trailer Area 2 @ 280 mg/kg
Confluence @ 410 mg/kg
Downgradient @ 260 mg/kg

PROTECTION OF GROUNDWATER SOIL REMEDIATION GOALS

Antimony (0.90 mg/kg)
Confluence @ 2.51 mg/kg J
Downgradient @ 3.21 mg/kg J

Arsenic (5.80 mg/kg)
Background 1 @ 6.23 mg/kg
Trailer Area 1 @ 34.3 mg/kg
Trailer Area 2 @ 7.77 mg/kg
Confluence @ 16.5 mg/kg
Downgradient @ 7.05 mg/kg

GOLDER ASSOCIATES INC.
QUALITY ASSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 5 of 5

Cobalt (0.90 mg/kg)
Background 1 @ 1.79 mg/kg
Background 2 @ 22.4 mg/kg
Trailer Area 1 @ 11.5 mg/kg
Trailer Area 2 @ 11.8 mg/kg
Confluence @ 11.7 mg/kg
Downgradient @ 10.3 mg/kg

Selenium (2.10 mg/kg)
Background 1 @ 3.32 mg/kg
Trailer Area 1 @ 2.50 mg/kg J
Trailer Area 2 @ 6.86 mg/kg
Confluence @ 4.97 mg/kg
Downgradient @ 5.44 mg/kg

Thallium (0.28 mg/kg)
Confluence @ 4.42 mg/kg J
Downgradient @ 4.88 mg/kg J

Vanadium (6.00 mg/kg)
Background 1 @ 38.0 mg/kg
Background 2 @ 8.75 mg/kg
Trailer Area 1 @ 67.8 mg/kg
Trailer Area 2 @ 64.5 mg/kg
Confluence @ 74.8 mg/kg
Downgradient @ 72.4 mg/kg
NA No inorganic and organic constituents were detected in a well or surface water point at quantified
concentrations outside of their historical range (more than 5X previous concentrations or first-time detections).
DR Other report issues/Communications with laboratory/etc.: