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Home My WebLink About17056_2014APR-Limited GW & Sediment Report_S&MELimited Groundwater and Sediment Assessment Report April 28, 2014 Crompton & Knowles Corp, Lowell, Gaston County, North Carolina S&ME Project No. 1054-14-2084 ______________________________________________________________________________ 2 1.0 INTRODUCTION.................................................................................1 2.0 PROJECT BACKGROUND AND PURPOSE ........................................1 3.0 SITE ACTIVIITES...............................................................................3 3.1 HEALTH AND SAFETY ...................................................................................................... 3 3.2 GROUNDWATER ............................................................................................................... 3 3.3 SEDIMENT ........................................................................................................................ 3 4.0 RESULTS ...........................................................................................5 4.1 GROUNDWATER ............................................................................................................... 5 4.2 SEDIMENT ........................................................................................................................ 5 5.0 CONCLUSIONS..................................................................................7 5.1 GROUNDWATER ............................................................................................................... 7 5.2 SEDIMENT ........................................................................................................................ 7 Tables Table 1 Temporary Monitor Well Completion Details Table 2 Sample Location Coordinates Table 3 Field Parameters Table 4 Summary of Groundwater Analytical Data Table 5 Summary of Sediment Analytical Data Table 6 Grain Size Analysis Figures Figure 1 Vicinity Map Figure 2 Site Map with Sampling Locations Figure 3 Monitor Well Sampling Results Map Figure 4 Sediment Sampling Results Map Appendices Appendix I Photographic Log Appendix II Laboratory Analytical Report Appendix III Charts Appendix IV Grain Size Analysis Reports Limited Groundwater and Sediment Assessment Report April 28, 2014 Crompton & Knowles Corp, Lowell, Gaston County, North Carolina S&ME Project No. 1054-14-2084 ______________________________________________________________________________ 1 1.0 INTRODUCTION S&ME, Inc.’s scope of services were performed in general accordance with proposal number 43- 14000148 Revision 1.2, dated February 26, 2014, and as authorized by the North Carolina Department of Environment and Natural Resources (NCDENR) Task Authorization dated February 26, 2014 under Contract #N10005S. S&ME completed the following scope of services approved for this task authorization: Prepared a site specific health and safety plan; Installed four temporary monitor wells; Collected groundwater samples from the four temporary monitor wells and two existing monitor wells, MW-3 and MW-10; Submitted groundwater samples for laboratory analysis for volatile organic compounds (VOCs) by EPA Method 8260B, semi-volatile organic compounds (SVOCs) by EPA Method 8270D, and metals by EPA Method 6010C; Collected 43 sediment samples from the South Fork of the Catawba River, including nine background samples and five down-stream samples from 18 stream sample locations; Submitted sediment samples for laboratory analysis for metals by EPA Method 6010C, and for SVOCs by EPA Method 8270D (background and downstream samples were analyzed for metals only); Submitted sediment samples for grain size analysis according to ASTM Method D422- L002; and, Prepared this report. 2.0 PROJECT BACKGROUND AND PURPOSE The Crompton & Knowles site (State ID No. NCD044444735) is located at 1602 North Main Street, Lowell, Gaston County, North Carolina (Figures 1 and 2). The site is a former industrial complex and is currently unoccupied. The approximate central coordinates are 35.2858° north latitude and 81.1049° west longitude. The Crompton & Knowles site was a textile dye manufacturing facility that operated between 1958 and 2004. Facility names associated with the site include Yorkshire Americas Dye & Chemicals Corp. (1996-2004), Crompton & Knowles (1978- 1995), Harshaw Chemicals (1968-1978), Belle Chemical (1961-1968), and Gaston Chemical (1958-1960). Groundwater contamination was discovered during Crompton & Knowles ownership years and Yorkshire Americas operated the groundwater treatment system during its operational years. Chemtura Chemical, a successor to Crompton & Knowles, was identified as the responsible party for the groundwater contamination from 2004 until its bankruptcy in 2010. The current property owner, Kings Mountain Venture #1 LLC, purchased the facility property in 2006 through bankruptcy court. Kings Mountain Venture #1 LLC sold some of the equipment and proposed to develop the property for mixed use (residential, commercial, and office space) Limited Groundwater and Sediment Assessment Report April 28, 2014 Crompton & Knowles Corp, Lowell, Gaston County, North Carolina S&ME Project No. 1054-14-2084 ______________________________________________________________________________ 2 under the North Carolina Brownfields Agreement. As of the date of this report, the agreement is not finalized. The site is currently vacant. A groundwater contaminant plume is present in the unconfined groundwater aquifer. The chemicals of concern are primarily trimethylbenzenes, polynuclear aromatic hydrocarbons, and suspect metals, including arsenic, chromium, copper, manganese, and nickel. The immediate groundwater contaminant plume receptor is the South Fork of the Catawba River. On February 6, 2014, Mr. Ed Woloszyn of S&ME, Inc. (S&ME), Mr. James Batson and Mr. Harry Zinn of the NCDENR Inactive Hazardous Sites Branch (IHSB), Ms. Sharon Eckard of the Brownfields Program, Tom McKittrick of Kings Mountain Ventures, and other stakeholders met at the site. The purpose of the meeting was to discuss the scope of services requested by IHSB and to be performed by S&ME. Mr. Woloszyn walked the property along the perimeter to identify locations for the installation of temporary monitor wells and to evaluate river access in advance of collecting sediment samples from the south bank. A photographic log of the activities performed is provided in Appendix I. Limited Groundwater and Sediment Assessment Report April 28, 2014 Crompton & Knowles Corp, Lowell, Gaston County, North Carolina S&ME Project No. 1054-14-2084 ______________________________________________________________________________ 3 3.0 SITE ACTIVITIES 3.1 Health and Safety Prior to site activities, S&ME prepared a site specific health and safety plan to comply with 29 CFR 1910.120, hazardous waste operations and emergency response (HAZWOPER) rule for the protection of workers at uncontrolled hazardous sites prior to commencing field activities. 3.2 Groundwater On March 10 and 11, 2014, S&ME advanced four borings with a hand auger and installed a temporary monitor well in each boring. The wells were constructed of 5 feet of 1-inch PVC 0.010-inch slotted screen and 1-inch PVC riser to the ground surface. Temporary monitor wells TW-1 and TW-3 were installed at approximately 6 feet below ground surface (ft. bgs.), and TW- 2 and TW-4 were installed at 7 ft. bgs. Each boring was advanced to auger refusal. A filter pack consisting of #2 washed sand was installed in the annulus surrounding the well to one foot above the well screen. The temporary monitor well completion details are presented in Table 1. The locations of the temporary monitor wells were recorded using a Trimble Geoexplorer 6000 Series global positioning system (GPS) unit. The coordinates are presented in Table 2, and the well locations are shown in Figure 2. On March 11 and 12, 2014, S&ME personnel sampled temporary monitor wells TW-1 through TW-4 and monitor wells MW-3 and MW-10. Prior to sampling, depth to water was measured using a water level indicator. The depth to groundwater measurements are included in Table 1. The wells were sampled using a peristaltic pump and dedicated ¼” polyethylene and silicone tubing. Field parameters including pH, temperature, specific conductance, oxidation-reduction potential, and turbidity were monitored using a YSI 6920 multi meter with a flow-through cell. Parameters were recorded approximately every three minutes until the parameters stabilized; the turbidity was reduced to below 10 nephelometric turbidity units (ntu) where possible. The field parameter measurements are summarized in Table 3. Groundwater samples were collected directly into laboratory supplied containers, placed in a cooler on ice, and shipped under standard chain-of-custody procedure to ENCO Laboratories of Cary, North Carolina, a North Carolina Certified Laboratory. Samples were analyzed for VOCs by EPA Method 8260B, SVOCs by EPA Method 8270D, and for five metals (arsenic, chromium, copper, manganese, and nickel) by EPA Method 6010C. A copy of the laboratory analytical report is included in Appendix II. For quality assurance/quality control (QA/QC), one duplicate sample, one equipment blank, and one trip blank were submitted for analysis. 3.3 Sediment On March 27 and 28, 2014, S&ME personnel collected 43 sediment samples (SS-1 through SS- 29, B-1 through B-9, and D-1 through D-5) at 18 stream stations along the South Fork of the Catawba River (Figure 3). Samples were collected from a boat using a hand auger which was decontaminated between borings. At each station, one sample was collected from the sediment at the water line, one below the waterline, and a third sediment sample from at a deeper depth Limited Groundwater and Sediment Assessment Report April 28, 2014 Crompton & Knowles Corp, Lowell, Gaston County, North Carolina S&ME Project No. 1054-14-2084 ______________________________________________________________________________ 4 below the water line, if possible. The sample depths for samples collected below the water line varied in depth from 1.5 to 7.0 feet, dependent upon the depth of the river and the depth to auger refusal. Background samples B-1 through B-9 were collected upstream from the site, and the downstream samples D-1 through D-5 were collected downstream of the site. The locations of the stream stations at which the samples were collected are shown in Figure 2.Table 2 documents the coordinates of each stream station. Each sediment sample was split into two portions. One portion was collected into laboratory supplied containers, placed in a cooler on ice and shipped under standard chain-of-custody procedures to ENCO Laboratories for analysis for five metals (arsenic, chromium, copper, manganese, and nickel) by EPA Method 6010C and for SVOCS by EPA Method 8270D. A second portion was collected into jars for sediment grain size analysis by ASTME Method D422- L002 at S&ME’s soils laboratory in Raleigh, North Carolina. One duplicate sample and one equipment rinsate sample were collected per day, and one trip blank was included in each cooler. The QA/QC samples were included in the laboratory analysis with the exception of the grain size analysis. Limited Groundwater and Sediment Assessment Report April 28, 2014 Crompton & Knowles Corp, Lowell, Gaston County, North Carolina S&ME Project No. 1054-14-2084 ______________________________________________________________________________ 5 4.0 RESULTS 4.1 Groundwater The laboratory analytical results of the groundwater samples collected on March 11 and 12, 2014 indicated that the following constituents were reported at concentrations above their respective 15A NCAC 2L Groundwater Standards (2L Standards): 1,2,4-trichlorobenzene in MW-3; 1,4-dichlorobenzene in MW-3; Benzene in MW-3; Manganese in TW-2, TW-3, MW-3 and MW-10; and, Chromium in TW-3. Additional constituents were reported at concentrations above the laboratory analytical method detection limits, but below their respective 2L Standards in the groundwater samples collected from temporary monitor wells TW-1 through TW-4, and permanent monitor wells MW-3 and MW-10. A summary of the groundwater analytical results is presented in Table 4 and shown in Figure 3, and a copy of the laboratory analytical report in presented in Appendix II. The laboratory analytical results of the QA/QC samples indicated that the Duplicate sample results, which was collected from monitor well MW-3, were within 20 percent the of the record sample results. No VOCs were reported in the trip blank or the equipment blank. No SVOCs were reported in the equipment rinsate sample. One metal, manganese, was reported at a concentration of 1.68 µg/L in the equipment rinsate sample. The concentration was flagged “J” as an estimated concentration, indicating that the detection was below the laboratory reporting limit but above the analytical method’s detection limit. 4.2 Sediment The laboratory analytical results of the sediment samples collected March 24 and 25, 2014, indicated the following constituents were reported at concentrations above their respective IHSB Preliminary Soil Remediation Goals (PSRGs) for residential (unrestricted use) health-based concentrations: Arsenic in samples SS-5, SS-7 through SS-29, BG-1 through BG-9, and DS-1 through DS-5; Chromium in all samples collected. Because hexavalent chromium was not analyzed, the results represent total chromium, trivalent and hexavalent chromium combined, the more stringent regulatory standard was applied. If based upon the assumption that trivalent chromium constituent present in the sediment samples, then none of sample results exceed the PSRGs. Manganese in samples SS-2 through SS-7, SS-10 through SS-12, SS-15 through SS-17, SS-19 through SS-24, SS-26, SS-27, SS-29, BG-1, BG-2, BG-9, and DS-3; and, Benzo(a) pyrene in sample SS-17. Limited Groundwater and Sediment Assessment Report April 28, 2014 Crompton & Knowles Corp, Lowell, Gaston County, North Carolina S&ME Project No. 1054-14-2084 ______________________________________________________________________________ 6 Industrial exposure scenario health-based concentrations were also compared to the sample concentrations. Additional constituents were reported at concentrations above the laboratory method detection limits but below their respective PSRGs. A summary of the sediment sample analytical results is presented in Table 5 and shown in Figure 4. Charts of metals concentrations in sediment samples are presented in Appendix III. A copy of the laboratory analytical report is provided in Appendix II. The laboratory analytical results of the QA/QC samples indicated that the duplicate samples were within an acceptable range of the record sample values; Replicate 1 is a duplicate of sample BG-7, and Replicate 2 is a duplicate of sample SS-29. One constituent, manganese, was reported at in the equipment blank sample. The detection was flagged with a “J”, indicating that the detection was below the laboratory reporting limit and is an estimated concentration. The grain size analysis of the soil samples indicated that the river sediments consist predominantly of sandy clayey silt, clayey silt, sandy silt, and silty sand. The general grain size distribution of the samples is presented in Table 6. Charts of the grain size distribution are presented in Appendix III. Copies of the individual sediment grain size analysis reports are provided in Appendix IV. Limited Groundwater and Sediment Assessment Report April 28, 2014 Crompton & Knowles Corp, Lowell, Gaston County, North Carolina S&ME Project No. 1054-14-2084 ______________________________________________________________________________ 7 5.0 CONCLUSIONS A limited groundwater and sediment assessment was conducted at the Crompton & Knowles Corp. Site, located at 1602 North Main Street, Lowell, Gaston County, North Carolina. The results of the site activities are summarized below. 5.1 Groundwater Laboratory analytical results of groundwater samples collected from four temporary and two permanent monitor wells indicated that VOCs were reported at concentrations above their respective 2L Standards in monitor well MW-3. Manganese was reported above the 2L standard in permanent well MW-10, but no VOCS or SVOCs were above North Carolina’s ground quality standard. No VOCs or SVOCs were reported in the groundwater samples collected from the temporary monitor wells TW-1 through TW-4. The detections of manganese in the temporary monitor wells as well as in the permanent monitor wells indicate that manganese may be present in the groundwater as a naturally occurring element. Chromium was reported at a concentration above the 2L Standard in the groundwater sample collected from temporary monitor well TW-3. In the absence of other chemicals of concern in at the locations of temporary well, the detection of chromium in shallow groundwater may also be naturally occurring in the groundwater, but due to elevated turbidity in the groundwater sample, there is some uncertainty if chromium is present in the dissolved element in groundwater or if chromium is present in the soil minerals. 5.2 Sediment The laboratory analytical results of the sediment samples collected from the South Fork of the Catawba indicated that arsenic, chromium and manganese were reported at concentrations above the PSRGs; however, the concentrations of these metals did not vary between background samples and samples collected along the stream bank adjacent to the Crompton Knowles site. The metals detected, therefore, could be naturally occurring. Charts of metals concentrations are provided in Appendix III. One SVOC, benzo(a)pyrene, was detected at a concentration above the PSRGs in sample SS-17, respectively. Since SVOCs are constituents of concern at the site, the detections of these SVOCs in the sediment samples may be related to the chemicals of concern historically reported in the groundwater at the site. The grain size analysis results indicated that sediments in the South Fork of the Catawba River in the vicinity of the site are predominantly fine grained, and consist of sandy clayey silts, sandy silts, clayey silts, and silty sandy clays. The grain size distribution is likely a function of the depositional environment. TABLES Well ID Date Installed Total Depth (ft. bgs.) Screen Interval (ft. bgs.) Riser Interval (ft. bgs.) Depth to Groundwater (ft. bgs.) TW-1 3/10/2014 6 6-1 1-0 4.67 TW-2 3/11/2014 7 7-2 2-0 4.00 TW-3 3/10/2014 6 6-1 1-0 4.23 TW-4 3/11/2014 7 7-2 2-0 4.10 Notes: ft. bgs. = feet below ground surface Table 1 Temporary Monitor Well Construction Details IHSB Crompton & Knowles Site NCD044444735 Lowell, Gaston County, North Carolina S&ME Project No. 1054-14-2084 TABLE 2 Sample Location Coordinates IHSB Crompton Knowles Site NCD044444735 Lowell, Gaston County, North Carolina S&ME Project No. 1054-14-2084 Location ID X Y T W -1 1371683.406 566278.746 T W -2 1372730.318 565178.5092 T W -3 1371730.916 566317.4135 T W -4 1372240.149 565928.0205 BG-1 1371719.042 566850.1323 BG-3 1371667.347 566725.1794 BG-6 1371661.084 566612.7499 BG-8 1371710.984 566479.5521 DS -1 1373039.072 565442.2874 DS -4 1372915.77 565481.1364 S S -1 1371983.782 566212.7052 S S -3 1372060.647 566162.0823 S S -6 1372162.096 566071.0663 S S -8 1372266.348 566000.7795 S S -11 1372291.421 565983.3482 S S -14 1372317.449 565949.0656 S S -17 1372376.438 565900.6132 S S -20 1372407.698 565871.5134 S S -22 1372441.668 565844.1109 S S -24 1372473.899 565808.12 S S -26 1372647.97 565677.3836 S S -28 1372536.382 565766.6752 N otes: CoordinatesbaseduponN orthCarolinaP laneN AD83 TABLE 3 Field Parameters IHSB Crompton Knowles Site NCD044444735 Lowell, Gaston County, North Carolina S&ME Project No. 1054-14-2084 Well ID Date Temperature (°C)1 Specific Conductance (mS/cm)2 pH (SU)3 ORP 4 (mV)5 Tubidity (ntu)6 TW-1 3/10/2014 8.33 0.072 5.38 228.4 37.8 TW-2 3/11/2014 12.68 0.104 5.46 262.5 5.7 TW-3 3/10/2014 12.29 0.067 5.5 241.4 224.5 7 TW-4 3/11/2014 11.4 0.127 5.93 221.3 18.2 7 MW-3 3/11/2014 12.26 3.026 6.7 -45.2 154.3 MW-10 3/11/2014 13.37 1.887 7.13 15.3 5.6 Notes: 1. °C: degrees Celcius 2. mS/cm: milliSiemens per centimeter 3. SU: standard units 4. ORP: oxidation reduction potential 5. mV: millivolts 6. ntu: nephelometric turbidity units 7. Well was developed and purged in an effort to reduct the turbidity for one hour and samples the well when turbidity no longer decresed with time. Sample ID TW-1 TW-2 TW-3 TW-4 MW-3 MW-10 Duplicate (Duplicate of MW-3) EQ-1 Trip Blank Date Collected Analyte 1,2,3-Trichlorobenzene <0.01 <0.01 <0.01 <0.01 140D <0.01 130D <0.01 <0.01 NE 1,2,4-Trichlorobenzene <0.14 <0.14 <0.14 <0.14 470D <0.14 480D <0.14 <0.14 70 1,2-Dichlorobenzene <0.19 <0.19 <0.19 <0.19 <1.9 <0.19 4.2 <0.19 <0.19 20 1,3-Dichlorobenzene <0.15 <0.15 <0.15 <0.15 30D 15 36 <0.15 <0.15 200 1,4-Dichlorobenzene <0.19 <0.19 <0.19 <0.19 13D 0.77J 13D <0.19 <0.19 6 Benzene <0.15 <0.15 <0.15 <0.15 24D 0.65J 26D <0.15 <0.15 1 Chlorobenzene <0.17 <0.17 <0.17 <0.17 5.0JD 1.3 4.7JD <0.17 <0.17 50 cis-1,2-Dichloroethene <0.15 <0.15 <0.15 <0.15 <1.5 5.0 <1.5 <0.15 <0.15 70 trans-1,2-Dichloroethene <0.21 <0.21 <0.21 <0.21 <2.1 2.3 <2.1 <0.21 <0.21 100 1,1'-Biphenyl <1.5 <1.5 <1.5 <1.5 6.4J <1.5 7.3J <1.5 --400 2-Methylphenol <1.4 <1.4 <1.4 <1.4 2.1 <1.4 4.0 <1.4 --400* 3 & 4-Methylphenol <1.6 <1.6 <1.6 <1.6 15 <1.6 19 <1.6 --40** 4-Chloro-3-methylphenol <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 9.0 <1.5 --NE 4-Chloroaniline <1.2 <1.2 <1.2 <1.2 12J 2.1 13J <1.2 --NE Bis(2-ethylhexyl)phthalate <1.7 <1.7 <1.7 <1.7 <1.7 <1.7 1.8J <1.7 --3 Naphthalene <1.3 <1.3 <1.3 <1.3 2.4J <1.3 2.7J <1.3 --6 Arsenic <5.40 <5.40 <5.40 <5.40 <5.40 <5.40 <5.40 <5.40 --10 Chromium <1.40 <1.40 26.5 <1.40 9.92J 1.84J 9.50J <1.40 --10 Copper 2.44J <1.60 44.5 <1.60 97.6 <1.60 96.2 <1.60 --1,000 Manganese 40.9 50.1 306 38.9 1,120 388 1,190 1.68J --50 Nickel <1.80 <1.80 10.4 <1.80 8.70J <1.80 8.15J <1.80 --100 Notes: All parameters reported in micrograms per liter (ug/L) VOCs: volatile organic compounds SVOCs: semi-volatile organic compounds NE: Regulatory standard not established for the listed parameter --: analysis was not requested for the listed method. J: detection is below the reporting limit- the value is estimated D: sample analyzed at dilution *: most stringent standard based on 3-methylphenol **: based on the interim maximum allowable concentrations (IMAC) 3/11/2014 2L Standards 3/11/20143/12/2014 TABLE 4 Summary of Groundwater Analytical Results S&ME Project No. 1054-14-2084 IHSB Crompton-Knowles Site NCD044444735 Lowell, Gaston County, North Carolina 3/12/2014 3/11/2014 3/11/20143/11/2014 3/11/2014 SVOCs by EPA Method 8270C (ug/L) Metals by EPA Method 6010C (ug/L) VOCs by EPA Method 8260B (ug/L) SpecificMethod 3/11/2014 TABLE 5 Summary of Sediment Sample Analytical Results IHSB Crompton & Knowles Site NCD044444735 Lowell, Gaston County, North Carolina S&ME Project No. 1054-14-2084 page 1 of 7 Sample ID SS-1 SS-2 SS-3 SS-4 SS-5 SS-6 Date Collected 3/24/2014 3/24/2014 3/24/2014 3/24/2014 3/24/2014 3/24/2014 3.04 3.70 3.42 5.24 6.26 2.51 0.61 69 24.6 19.7 24.7 35.5 44.4 19.5 Cr+60.29/Cr+324,000 Cr+65.6/Cr+310,0000 62.5 47.6 16.3 24.9 70.6 9.51 620 8,200 138 797 310 392 496 362 360 4,000 9.67 11.7 8.43 10.8 14.1 6.41 300 4,000 <0.13 <0.12 <0.14 <0.14 <0.16 <0.13 2.4 8.6 <0.039 <0.035 <0.041 <0.042 <0.048 <0.038 0.15 2.1 <0.045 <0.042 <0.048 <0.049 <0.056 <0.045 0.015 0.21 <0.025 <0.023 <0.026 <0.027 <0.031 <0.025 1.5 2.1 <0.048 <0.044 <0.051 <0.052 0.070J <0.048 35 120 <0.041 <0.038 <0.044 <0.045 <0.051 <0.041 15 210 <0.039 <0.035 <0.041 <0.042 <0.048 <0.038 9,800 98,000 <0.050 <0.046 <0.053 <0.054 <0.061 <0.049 460 4,400 <0.052 <0.048 <0.056 <0.057 <0.065 <0.052 340 3,400 Notes: All constituents reported in milligrams per kilogram (mg/kg) SVOC: semi-volatile organic compounds PSRG: preliminary soil remediation goals Constituents not shown were not detected for the method J: detection is below the reporting limit- the value is estimated D: sample analyzed at dilution B: the constituent was detected in the associated method blank Nickel PSRG is presented as Nickel Soluble Salts Chromium PSRG is presented as hexevalent chromium and trivalent chromium EPA 6010C SVOCs by EPA 8270D (mg/kg) AnalyteSpecificMethod Arsenic Copper Chromium Manganese Nickel Chrysene Diethylphthalate Fluoranthene Pyrene 4-Chloroaniline Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Bis(2-ethylhexyl)phthalate Residential Health PSRG Industrial Health PSRG TABLE 5 Summary of Sediment Sample Analytical Results IHSB Crompton & Knowles Site NCD044444735 Lowell, Gaston County, North Carolina S&ME Project No. 1054-14-2084 Sample ID Date Collected Notes: All constituents reported in milligrams per kilogram (mg/kg) SVOC: semi-volatile organic compounds PSRG: preliminary soil remediation goals Constituents not shown were not detected for the method J: detection is below the reporting limit- the value is estimated D: sample analyzed at dilution B: the constituent was detected in the associated method blank Nickel PSRG is presented as Nickel Soluble Salts Chromium PSRG is presented as hexevalent chromium and trivalent chromium EPA 6010C SVOCs by EPA 8270D (mg/kg) AnalyteSpecificMethod Arsenic Copper Chromium Manganese Nickel Chrysene Diethylphthalate Fluoranthene Pyrene 4-Chloroaniline Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Bis(2-ethylhexyl)phthalate page 2 of 7 SS-7 SS-8 SS-9 SS-10 SS-11 SS-12 3/24/2014 3/24/2014 3/24/2014 3/24/2014 3/24/2014 3/24/2014 3.36 2.73 3.84 6.02 5.81 5.39 0.61 69 21.7 22.1 34.5 35.8 33.1 44.9 Cr+60.29/Cr+324,000 Cr+65.6/Cr+310,0000 32.8 10.9 17.9 22.5 16.3 153 620 8,200 414 229 339 392 464 508 360 4,000 8.39 7.07 8.74 10.3 10.6 10.9 300 4,000 <0.13 <0.14 0.19J <0.15 <0.14 <0.16 2.4 8.6 <0.040 <0.041 <0.043 <0.044 <0.041 <0.049 0.15 2.1 <0.047 <0.049 <0.050 <0.052 <0.048 <0.058 0.015 0.21 <0.026 <0.027 <0.027 <0.028 <0.026 <0.031 1.5 2.1 <0.050 <0.052 <0.053 <0.055 <0.051 <0.061 35 120 <0.043 <0.044 <0.046 <0.047 <0.044 <0.052 15 210 <0.040 <0.041 <0.043 <0.044 <0.041 <0.049 9,800 98,000 <0.051 <0.053 <0.055 <0.057 <0.053 <0.063 460 4,400 <0.054 <0.056 <0.058 <0.060 <0.056 <0.066 340 3,400 Residential Health PSRG Industrial Health PSRG TABLE 5 Summary of Sediment Sample Analytical Results IHSB Crompton & Knowles Site NCD044444735 Lowell, Gaston County, North Carolina S&ME Project No. 1054-14-2084 Sample ID Date Collected Notes: All constituents reported in milligrams per kilogram (mg/kg) SVOC: semi-volatile organic compounds PSRG: preliminary soil remediation goals Constituents not shown were not detected for the method J: detection is below the reporting limit- the value is estimated D: sample analyzed at dilution B: the constituent was detected in the associated method blank Nickel PSRG is presented as Nickel Soluble Salts Chromium PSRG is presented as hexevalent chromium and trivalent chromium EPA 6010C SVOCs by EPA 8270D (mg/kg) AnalyteSpecificMethod Arsenic Copper Chromium Manganese Nickel Chrysene Diethylphthalate Fluoranthene Pyrene 4-Chloroaniline Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Bis(2-ethylhexyl)phthalate page 3 of 7 SS-13 SS-14 SS-15 SS-16 SS-17 SS-18 3/24/2014 3/24/2014 3/24/2014 3/24/2014 3/24/2014 3/24/2014 3.77 4.37 6.13 6.78 6.64D 10.0 0.61 69 38.3 28.4 34.2 40.2 35.5D 43.5 Cr+60.29/Cr+324,000 Cr+65.6/Cr+310,0000 19.5 13.9 16.1 25.5 20.2D 23.8 620 8,200 322 284 377 614 820D 177 360 4,000 11.2 9.18 10.5 12.5 11.3JD 12.5 300 4,000 <0.14 <0.13 <0.14 <0.14 <0.13 <0.15 2.4 8.6 <0.043 <0.038 <0.041 <0.043 0.099J <0.047 0.15 2.1 <0.051 <0.045 <0.048 <0.051 0.080J <0.055 0.015 0.21 <0.028 <0.025 <0.026 <0.028 0.087 <0.030 1.5 2.1 <0.054 <0.048 <0.051 <0.054 <0.050 <0.058 35 120 <0.046 <0.041 <0.044 <0.046 0.071J <0.050 15 210 <0.043 <0.038 <0.041 <0.043 <0.040 <0.047 9,800 98,000 <0.056 <0.049 <0.052 <0.056 0.068J <0.060 460 4,400 <0.059 <0.052 <0.055 <0.059 0.11J <0.063 340 3,400 Residential Health PSRG Industrial Health PSRG TABLE 5 Summary of Sediment Sample Analytical Results IHSB Crompton & Knowles Site NCD044444735 Lowell, Gaston County, North Carolina S&ME Project No. 1054-14-2084 Sample ID Date Collected Notes: All constituents reported in milligrams per kilogram (mg/kg) SVOC: semi-volatile organic compounds PSRG: preliminary soil remediation goals Constituents not shown were not detected for the method J: detection is below the reporting limit- the value is estimated D: sample analyzed at dilution B: the constituent was detected in the associated method blank Nickel PSRG is presented as Nickel Soluble Salts Chromium PSRG is presented as hexevalent chromium and trivalent chromium EPA 6010C SVOCs by EPA 8270D (mg/kg) AnalyteSpecificMethod Arsenic Copper Chromium Manganese Nickel Chrysene Diethylphthalate Fluoranthene Pyrene 4-Chloroaniline Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Bis(2-ethylhexyl)phthalate page 4 of 7 SS-19 SS-20 SS-21 SS-22 SS-23 SS-24 3/24/2014 3/24/2014 3/24/2014 3/24/2014 3/24/2014 3/24/2014 6.09 6.97 4.81B 5.52B 4.31B 5.89B 0.61 69 42.8 57.1 35.7 36.6 41.7 41.2 Cr+60.29/Cr+324,000 Cr+65.6/Cr+310,0000 25.2 39.4 24.4 23.5 19.5 40.9 620 8,200 502 492 372 993 436 612 360 4,000 12.0 17.9 20.6 12.6 13.9 12.7 300 4,000 <0.15 <0.17 <0.14 <0.15 <0.13 <0.16 2.4 8.6 <0.046 <0.050 <0.042 <0.046 <0.040 <0.048 0.15 2.1 <0.054 <0.059 <0.050 <0.055 <0.047 <0.056 0.015 0.21 <0.029 <0.032 <0.027 <0.030 <0.026 <0.031 1.5 2.1 <0.057 0.070J <0.053 <0.058 <0.050 <0.060 35 120 <0.049 <0.054 <0.045 <0.050 <0.043 <0.051 15 210 <0.046 <0.050 <0.042 <0.046 <0.040 <0.048 9,800 98,000 <0.059 <0.065 <0.054 <0.060 <0.051 <0.061 460 4,400 <0.062 <0.068 <0.057 <0.063 <0.054 <0.065 340 3,400 Residential Health PSRG Industrial Health PSRG TABLE 5 Summary of Sediment Sample Analytical Results IHSB Crompton & Knowles Site NCD044444735 Lowell, Gaston County, North Carolina S&ME Project No. 1054-14-2084 Sample ID Date Collected Notes: All constituents reported in milligrams per kilogram (mg/kg) SVOC: semi-volatile organic compounds PSRG: preliminary soil remediation goals Constituents not shown were not detected for the method J: detection is below the reporting limit- the value is estimated D: sample analyzed at dilution B: the constituent was detected in the associated method blank Nickel PSRG is presented as Nickel Soluble Salts Chromium PSRG is presented as hexevalent chromium and trivalent chromium EPA 6010C SVOCs by EPA 8270D (mg/kg) AnalyteSpecificMethod Arsenic Copper Chromium Manganese Nickel Chrysene Diethylphthalate Fluoranthene Pyrene 4-Chloroaniline Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Bis(2-ethylhexyl)phthalate page 5 of 7 SS-25 SS-26 SS-27 SS-28 SS-29 Replicate2 (Record sample SS-29) 3/24/2014 3/25/2014 3/25/2014 3/25/2014 3/25/2014 3/25/2014 4.52B 5.16B 8.16BD 5.58B 8.53BD 10.5BD 0.61 69 35.8 38.2 57.7D 51.4 56.5D 52.6D Cr+60.29/Cr+324,000 Cr+65.6/Cr+310,0000 18.9 31.1 32.6D 35.6 38.8D 44D 620 8,200 232 515 799D 132 680D 704D 360 3,600 10.6 12.7 18.9D 8.62 19.1D 17.9D 160 2,000 <0.13 <0.15 <0.15 <0.17 <0.15 <0.15 2.4 8.6 <0.040 <0.045 <0.046 <0.050 <0.045 <0.045 0.15 2.1 <0.047 <0.053 <0.054 <0.059 <0.053 <0.053 0.015 0.21 <0.026 <0.029 <0.029 <0.032 <0.029 <0.029 1.5 2.1 <0.050 <0.056 <0.057 <0.062 0.079J 0.066J 35 120 <0.043 <0.048 <0.049 <0.053 <0.048 <0.048 15 210 <0.040 <0.045 <0.046 <0.050 0.19J <0.045 9,800 98,000 <0.051 <0.058 <0.059 <0.064 <0.058 <0.058 460 4,400 <0.054 <0.061 <0.062 <0.068 <0.061 <0.061 340 3,400 Residential Health PSRG Industrial Health PSRG TABLE 5 Summary of Sediment Sample Analytical Results IHSB Crompton & Knowles Site NCD044444735 Lowell, Gaston County, North Carolina S&ME Project No. 1054-14-2084 Sample ID Date Collected Notes: All constituents reported in milligrams per kilogram (mg/kg) SVOC: semi-volatile organic compounds PSRG: preliminary soil remediation goals Constituents not shown were not detected for the method J: detection is below the reporting limit- the value is estimated D: sample analyzed at dilution B: the constituent was detected in the associated method blank Nickel PSRG is presented as Nickel Soluble Salts Chromium PSRG is presented as hexevalent chromium and trivalent chromium EPA 6010C SVOCs by EPA 8270D (mg/kg) AnalyteSpecificMethod Arsenic Copper Chromium Manganese Nickel Chrysene Diethylphthalate Fluoranthene Pyrene 4-Chloroaniline Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Bis(2-ethylhexyl)phthalate page 6 of 7 BG-1 BG-2 BG-3 BG-4 BG-5 BG-6 BG-7 Replicate1 (Record sample BG-7) 3/24/2014 3/24/2014 3/24/2014 3/24/2014 3/24/2014 3/24/2014 3/24/2014 3/24/2014 3.85 6.82 3.19 3.04 4.59 1.96 6.81BD 4.08BD 0.61 69 56.8 46.6 27.7 18.2 37.5 9.45 35D 24.2D Cr+60.29/Cr+324,000 Cr+65.6/Cr+310,0000 82.0 25.2 24.1 15.0 22.3 41.3 16.7D 47.1D 620 8,200 379 421 201 119 277 290 168D 493D 360 4,000 42.0 13.1 9.15 5.77 11.0 4.93 9.98D 10.6JD 300 4,000 ---------------- ---------------- ---------------- ---------------- ---------------- ---------------- ---------------- ---------------- ---------------- Residential Health PSRG Industrial Health PSRG TABLE 5 Summary of Sediment Sample Analytical Results IHSB Crompton & Knowles Site NCD044444735 Lowell, Gaston County, North Carolina S&ME Project No. 1054-14-2084 Sample ID Date Collected Notes: All constituents reported in milligrams per kilogram (mg/kg) SVOC: semi-volatile organic compounds PSRG: preliminary soil remediation goals Constituents not shown were not detected for the method J: detection is below the reporting limit- the value is estimated D: sample analyzed at dilution B: the constituent was detected in the associated method blank Nickel PSRG is presented as Nickel Soluble Salts Chromium PSRG is presented as hexevalent chromium and trivalent chromium EPA 6010C SVOCs by EPA 8270D (mg/kg) AnalyteSpecificMethod Arsenic Copper Chromium Manganese Nickel Chrysene Diethylphthalate Fluoranthene Pyrene 4-Chloroaniline Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Bis(2-ethylhexyl)phthalate BG-8 BG-9 DS-1 DS-2 DS-3 DS-4 DS-5 Equipment Blank 3/24/2014 3/24/2014 3/25/2014 3/25/2014 3/25/2014 3/25/2014 3/25/2014 3/25/2014 3.58 8.59 3.56 3.01 5.12 2.50 3.49 <5.40 0.61 69 32.5 45.4 21.4 20.3 32.0 17.1 27.2 <1.40 Cr+60.29/Cr+324,000 Cr+65.6/Cr+310,0000 24.8 22.9 22.2 18.3 19.7 43.5 21.5 <1.60 620 8,200 211 475 238 175 585 75.6 104 2.05J 360 4,000 10.2 13.2 7.80 6.76 10.6 5.68 8.66 <1.80 300 4,000 ---------------- ---------------- ---------------- ---------------- ---------------- ---------------- ---------------- ---------------- ---------------- Residential Health PSRG Industrial Health PSRG TABLE 6 Sediment Grain Size Analysis IHSB Crompton & Knowles NCD044444735 Lowell, Gaston County, North Carolina S&ME Project No. 1054-14-2084 Sample ID Silt Clay Colloids Gravel Total Sand Silt & Clay SS-1 15.8%10.5%6.6%50.3%23.4%26.3% SS-2 25.5%8.0%4.4%31.4%35.1%33.5% SS-3 21.9%7.5%4.5%0.0%70.6%29.4% SS-4 42.0%25.2%16.8%0.0%32.8%67.2% SS-5 59.0%29.5%18.8%0.0%11.5%88.5% SS-6 14.7%2.5%2.0%0.0%82.8%17.2% SS-7 41.4%16.0%8.6%1.6%41.0%57.4% SS-8 34.6%13.0%8.0%0.0%52.4%47.6% SS-9 17.2%5.2%2.6%10.5%67.1%22.4% SS-10 50.3%16.0%8.9%0.0%33.7%66.3% SS-11 28.9%10.3%6.0%0.0%60.8%39.2% SS-12 24.7%9.8%5.0%0.1%65.4%34.5% SS-13 44.6%23.0%14.9%0.0%32.4%67.6% SS-14 43.2%20.2%12.8%0.0%36.6%63.4% SS-15 32.3%21.2%14.7%0.0%46.5%53.5% SS-16 55.1%17.5%9.8%0.0%27.4%72.6% SS-17 43.0%26.3%18.9%0.0%30.7%69.3% SS-18 51.9%35.6%20.9%0.0%12.5%87.5% SS-19 53.0%23.8%14.9%0.0%23.2%76.8% SS-20 57.4%32.5%17.0%0.0%10.1%89.9% SS-21 55.6%18.5%9.9%0.0%25.9%74.1% SS-22 47.4%27.5%16.6%0.7%24.4%74.9% SS-23 54.1%19.8%10.9%0.0%26.1%73.9% SS-24 54.5%24.5%13.8%0.0%21.0%79.0% SS-25 49.4%17.0%8.9%0.0%33.6%66.4% SS-26 30.5%18.0%11.0%0.0%51.5%48.5% SS-27 51.7%23.0%14.9%0.0%25.3%74.7% SS-28 18.5%10.0%6.2%0.5%71.0%28.5% SS-29 53.6%32.5%20.9%0.0%13.9%86.1% B-1 21.1%2.5%0.5%33.7%42.7%23.6% B-2 47.3%30.0%18.8%0.0%22.7%77.3% B-3 26.1%14.2%8.0%0.2%59.5%40.3% B-4 19.1%9.0%6.9%20.0%51.9%28.1% B-5 39.9%17.5%9.9%0.0%42.6%57.4% B-6 25.8%7.8%5.5%25.3%41.1%33.6% B-7 50.4%27.5%16.9%0.0%22.1%77.9% B-8 15.3%7.2%4.4%50.5%27.0%22.5% B-9 44.7%24.0%14.8%0.0%31.3%68.7% DS-1 47.2%11.8%7.0%0.0%41.0%59.0% DS-2 59.0%17.5%8.9%0.4%23.1%76.5% DS-3 51.0%18.2%9.0%0.0%30.8%69.2% DS-4 30.0%12.5%8.4%0.2%57.3%42.5% DS-5 35.5%17.0%10.9%0.0%47.5%52.5% DATE: DRAWN BY: 3201 SPRING FOREST RD, RALEIGH, NC 27616 NC ENGINEER LICENSE #F-0176 SCALE: PROJECT NO: FIGURE NO. WWW.SMEINC.COM IHSB CROMPTON KNOWLES SITE GASTONIA, NORTH CAROLINA 1" = 200' BTR APRIL 2014 1054-14-2084 1 A-4302 VICINITY MAP ( IN FEET ) GRAPHIC SCALE 01000 20001000500 S:\PROJECTS\2_IHSB Orphan Priority Sites 2010\!IHSB Contract Projects\1054-14-2084 IHSB Crompton Knowles Site\CAD\A4302.dwg, FIG1, 4/27/2014 2:27:53 PM, 1:1 PROJECT NUMBER: DATE:FIGURE NO.SCALE: DRAWN BY: CHECKED BY:DRAWING NUMBER: WWW.SMEINC.COM 3201 SPRING FOREST RD, RALEIGH, NC 27616 NC ENGINEER LICENSE #F-01762 BTR1054-14-2084 APRIL 20141" = 200' IHSB CROMPTON KNOWLES SITE GASTONIA, NORTH CAROLINA SITE MAP B-2326 S:\PROJECTS\2_IHSB Orphan Priority Sites 2010\!IHSB Contract Projects\1054-14-2084 IHSB Crompton Knowles Site\CAD\B2326.dwg, FIG2, 4/27/2014 2:01:24 PM, 1:1 PROJECT NUMBER: DATE:FIGURE NO.SCALE: DRAWN BY: CHECKED BY:DRAWING NUMBER: WWW.SMEINC.COM 3201 SPRING FOREST RD, RALEIGH, NC 27616 NC ENGINEER LICENSE #F-01763 BTR1054-14-2084 APRIL 20141" = 200' IHSB CROMPTON KNOWLES SITE GASTONIA, NORTH CAROLINA MONITOR WELL SAMPLING RESULTS MAP B-2327 S:\PROJECTS\2_IHSB Orphan Priority Sites 2010\!IHSB Contract Projects\1054-14-2084 IHSB Crompton Knowles Site\CAD\B2327.dwg, FIG3, 4/27/2014 2:06:07 PM, 1:1 PROJECT NUMBER: DATE:FIGURE NO.SCALE: DRAWN BY: CHECKED BY:DRAWING NUMBER: WWW.SMEINC.COM 3201 SPRING FOREST RD, RALEIGH, NC 27616 NC ENGINEER LICENSE #F-01764 BTR1054-14-2084 APRIL 20141" = 200' IHSB CROMPTON KNOWLES SITE GASTONIA, NORTH CAROLINA SEDIMENT SAMPLING RESULTS MAP B-2328 S:\PROJECTS\2_IHSB Orphan Priority Sites 2010\!IHSB Contract Projects\1054-14-2084 IHSB Crompton Knowles Site\CAD\B2328.dwg, FIG4, 4/27/2014 2:14:05 PM, 1:1 S S -1 S S -2 S S -3 S S -4 S S -5 S S -6 S S -7 S S -8 S S -9 S S - 10 S S - 11 S S - 12 S S - 13 S S - 14 S S - 15 S S - 16 S S - 17 S S - 18 S S - 19 S S - 20 S S - 21 S S - 22 S S - 23 S S - 24 S S - 25 S S - 26 S S - 27 S S - 28 S S - 29 B- 1 B- 2 B- 3 B- 4 B- 5 B- 6 B- 7 B- 8 B- 9 DS -1 DS -2 DS -3 DS -4 DS -5 S ilt& Clay(% P assing#200):26.33.29.67.88.17.57.47.22.66.39.34.67.63.53.72.69.87.76.89.74.74.73.79.66.48.74.28.86.23.77.40.28.57.33.77.22.68.59.76.69.42.52. T otalS and:23.35.70.32.11.82.41.52.67.33.60.65.32.36.46.27.30.12.23.10.25.24.26.21.33.51.25.71.13.42.22.59.51.42.41.22.27.31.41.23.30.57.47. Gravel:50.31.0.00.00.00.01.60.010.0.00.00.10.00.00.00.00.00.00.00.00.00.70.00.00.00.00.00.50.033.0.00.220.0.025.0.050.0.00.00.40.00.20.0 0.0% 10.0% 20.0% 30.0% 40.0% 50.0% 60.0% 70.0% 80.0% 90.0% 100.0%PercentageGrainS izeS ummary