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Home My WebLink About22019 Cone Mill Greensboro Revised Work Plan 20180815 SOIL, GROUNDWATER, AND SOIL GAS SAMPLING WORK PLAN FORMER PRINT WORKS PLANT 1700, 1701, AND 1707 FAIRVIEW STREET GREENSBORO, GUILFORD COUNTY, NORTH CAROLINA BROWNFIELDS PROJECT ID. 22019-18-041 ECS PROJECT NUMBER: 49-7274 REVISED FOR PRINTWORKS VENTURES, LLC August 15, 2018 1 August 15, 2018 Mr. Dave Vos Printworks Ventures, LLC 345 West Washington Avenue, Suite 301 Madison, Wisconsin 53703 Reference: Soil, Groundwater, and Soil Gas Sampling Work Plan Former Print Works Plant 1700, 1701, and 1707 Fairview Street Greensboro, Guilford County, North Carolina ECS Project Number: 49-7274 Dear Mr. Vos: ECS Southeast, LLP (ECS) has prepared a work plan to collect soil, groundwater, and soil gas samples at the subject property. This plan has been developed at the request of the North Carolina Department of Environmental Quality (NCDEQ) Division of Waste Management (NCDWM) – North Carolina Brownfields Program (NCBP). ECS appreciates the opportunity to provide our environmental consulting services to you on this project. If you have any questions concerning this work plan or this project, please contact us. Sincerely, ECS SOUTHEAST, LLP Christopher D. Orrell, P.G. Matthew H. McDuffie, P.G. Staff Project Manager Senior Project Manager 704-525-5152 704-525-5152 correll@ecslimited.com mmcduffie@ecslimited.com John S. Lair, P.G. Principal Geologist 910-726-3035 jlair@ecslimited.com cc: William Schmithorst, NCDEQ NCDWM – NCBP Soil, Groundwater, and Soil Gas Sampling Work Plan Former Print Works Plant 1700, 1701, and 1707 Fairview Street Greensboro, Guilford County, North Carolina ECS Project Number: 49-7274 August 15, 2018 1 TABLE OF CONTENTS 1.0 PROJECT INFORMATION ....................................................................................... 2 2.0 PREVIOUS INVESTIGATIONS ................................................................................ 2 3.0 PROPOSED DEVELOPMENT ................................................................................. 3 4.0 OBJECTIVE OF THE WORKPLAN .......................................................................... 3 5.0 SAMPLE COLLECTION ........................................................................................... 6 FIGURES Figure 1 Site Location Map Figure 2 Site Features Map Figure 3 Sample Location Map Subject Property - Eastern Parcel Figure 4 Sample Location Map Subject Property - Western Parcel TABLES Table 1 Summary of VOC and SVOC Soil Sample Analytical Results Table 2 Summary of Metals Soil Sample Analytical Results Table 3 Summary of Groundwater Sample Analytical Results Table 4 Summary of Soil Gas Sample Analytical Results APPENDIX Appendix A EPA 537 (PFAS) Field Sampling Guidelines Soil, Groundwater, and Soil Gas Sampling Work Plan Former Print Works Plant 1700, 1701, and 1707 Fairview Street Greensboro, Guilford County, North Carolina ECS Project Number: 49-7274 August 15, 2018 2 1.0 PROJECT INFORMATION The Site is currently comprised of two parcels identified as Guilford County Parcel Identification Numbers (PINs) 7875261633 and 7875163235, which are both owned by Printworks Ventures, LLC, and located at 1700, 1701, and 1707 Fairview Street in Greensboro, Guilford County, North Carolina (Figures 1 and 2). The approximate 21.21 acre subject property consists of two tax parcels with the eastern parcel (PIN: 7875261633) occupied by a vacant former manufacturing facility that was originally developed in 1895 and contains approximately 800,000 square-foot of space. The western parcel (PIN: 787516235) consists of asphalt, overgrown vegetation, and a railroad spur along the northern property boundary. 2.0 PREVIOUS INVESTIGATIONS ECS previously conducted a Phase I Environmental Site Assessment (ESA) for the eastern parcel of subject property in 2000 with updates in 2003, 2004, 2016, as well as an update in 2018 which included both the eastern and western parcels (ECS Project numbers 09-4612, 09- 4612A, 09-4612B, 49-2582, and 49-2582-C). The ESA indicated that the subject property formerly contained the Cone Mills Corporation Print Works Plant. ECS identified several recognized environmental conditions (RECs) at the time of the Phase I ESAs. The RECs included the following: multiple underground storage tanks (USTs) and aboveground storage tanks (ASTs) formerly located on the subject property; the use of dyes, inks, caustics, oils, and solvents on the subject property; the wastewater treatment plant located on the adjoining property east of the subject property; and the Cone Mills White Oak Plant located on adjoining property north of the subject property. Between September 27 and 28, 2017, ECS conducted an investigation at the subject property (ECS Project No. 49: 2582-A). During the assessment, ECS collected soil samples from sixteen (16) soil borings on the subject property. The soil samples were field screened for volatile organic vapors using a flame ionization detector (FID). The soil sample from each boring exhibiting the highest reading on the FID was collected for laboratory analysis. Volatile organic vapors were detected in soil samples collected from soil borings SB-2/MW-2, SB-6, SB-7, and SB-11 at depths of two to six feet below the ground surface (ft bgs) ranging from 3.2 to 46 parts per million (ppm). When organic vapors were not detected, the sample from the base of the boring was collected for laboratory analysis. The soil samples were analyzed for volatile organic compounds (VOCs), semi-volatile organic compounds (SVOCs) base neutrals & acid (BNA), and total Resource Conservation and Recovery Act (RCRA) metals. Additionally, two soil samples were analyzed for hexavalent chromium. During the advancement of the soil borings, three permanent monitoring wells (MW-1 through MW-3) were installed on the site. A fourth monitoring well was attempted to be installed along the eastern portion of the subject site; however, the drill rig encountered bedrock in several locations and groundwater was not encountered. The permanent monitoring wells were advanced to depths ranging from 11 to 14 ft bgs. Depth to groundwater in the monitoring wells ranged from 1.81 feet below the top of casing (ft btoc) in monitoring well MW-1 to 12.42 ft btoc in monitoring well MW-3. The groundwater samples were analyzed for VOCs, SVOCs, and total RCRA metals. ECS collected ten soil-gas samples (SG-1 through SG-10) at the subject site to be analyzed using Method TO-15. Soil, Groundwater, and Soil Gas Sampling Work Plan Former Print Works Plant 1700, 1701, and 1707 Fairview Street Greensboro, Guilford County, North Carolina ECS Project Number: 49-7274 August 15, 2018 3 Laboratory analysis detected a variety of SVOCs at concentrations above their respective Residential Health-Based Preliminary Soil Remediation Goals (PSRGs) in the soil samples collected on the north side the building. The soil samples were collected between 3 and 4 ft bgs. Concentrations of VOCs exceeding the applicable NCDEQ 2L Groundwater Quality Standards (NC2LGWQS) were detected in the groundwater sample collected from monitoring well MW-2, located on the north side of the building. Analysis of soil gas samples detected VOCs in one sample located in the center of the building above the NCDEQ residential soil gas screening levels (SGSLs). Based on the results of the investigation, the Printworks Ventures, LLC submitted an application to enter into the NCBP. In correspondence dated May 8, 2018, the NCDEQ determined that Printworks Ventures, LLC and the subject property were eligible for entry into the NCBP (Brownfields Project No. 22019-18-041). The NCBP has requested the development of a Scope of Work to further evaluate site conditions with respect to the Brownfields process. The approximate locations of the previously collected and proposed samples are shown on Figures 3 and 4 and the results of previously collected samples are summarized in Tables 1 through 4. 3.0 PROPOSED DEVELOPMENT The redevelopment is anticipated to include commercial and multi-family residential. The current structure will be renovated/remodeled. 4.0 OBJECTIVE OF THE WORKPLAN USTs/ASTs Historical information indicates the former presence of private residences, which may have contained asbestos containing materials (ACM), lead-based paint (LBP), and/or heating oil USTs, on the south, southeast, and southwest (adjoining western parcel) portion of the subject property; a gasoline UST/AST located on the northeast end of the building; and a possible petroleum UST associated with the boiler room located on the west-central portion of the building. Additional assessment will be conducted to investigate the presence of petroleum- related impacts to soil and groundwater originating from a potential undocumented release of petroleum-related products within these areas. Additional assessment will include the following:  Completion of ground penetrating radar (GPR) survey, in the vicinity of the former private residences on the south, southeast, and southwest portion of the subject property, the reported gasoline UST/AST northeast of the building, and possible petroleum UST associated with the boiler room on the west-central portion of the building. Based on the results of the GPR survey, soil assessment will be conducted.  Collection of soil and groundwater samples for VOCs, SVOCs, total RCRA Metals, hexavalent chromium, and pesticides in the vicinity of possible USTs associated with former private residences. Groundwater samples will also be collected for perfluorinated compounds (PFCs). Soil, Groundwater, and Soil Gas Sampling Work Plan Former Print Works Plant 1700, 1701, and 1707 Fairview Street Greensboro, Guilford County, North Carolina ECS Project Number: 49-7274 August 15, 2018 4  Collection of additional surficial soil samples (0-2 ft. bgs) for asbestos, polycyclic aromatic hydrocarbons (PAHs),and leadfrom the test pits excavated in the former residential areas.  Collection of soil and groundwater samples for VOCs, SVOCs, total RCRA Metals, hexavalent chromium, and pesticides in the vicinity of the reported gasoline UST/AST northeast of the building and adjacent to the boiler room located on the west-central portion of the building. Groundwater samples will also be collected for PFCs. Boiler Room / Machine Shop Historical information indicates the presence of a machine shop located on the northeast end of the building as well as a boiler room located on the west-central portion of the building. Previous investigations indicted soil gas impacts above the NCDEQ residential SGSLs in soil gas sample SG-7, southeast of the boiler room. Additional assessment will be conducted to investigate the presence of impacts to soil originating from a potential undocumented release associated with the operation of a machine shop and boiler room. Additional assessment will include the following:  Collection of sub-slab soil gas samples for VOCs and the collection of soil samples for VOCs, SVOC, total RCRA Metals, hexavalent chromium, and pesticides within the boiler room and machine shop. Groundwater Assessment Previous environmental investigations did not include the assessment of groundwater on the northeast, south, or southeast portions of the subject property. Additional groundwater monitoring wells will be installed and samples will be collected within these areas of the subject property for VOCs, SVOCs, total RCRA Metals plus hexavalent chromium, pesticides, and PFCs. One additional monitoring well will be installed along the northeastern property boundary in order to assess potential groundwater impacts originating from the adjacent former Cone Mills White Oak Plant. Prior to the installation of the monitoring wells, the appropriate monitoring well permit installation permits will be acquired through Guilford County and/or the NCDEQ Division of Water Resources (DWR) Winston-Salem Regional Office. Groundwater samples will also be collected from the existing monitoring well located on the northeast side of the building. In addition, the monitoring well network will be utilized to further evaluate and determine groundwater flow direction. Railroad Spur Previous environmental investigations did not include the assessment of potential soil impacts associated with the railroad spur located along the northeastern portion of the eastern parcel and along the southwestern portion of the western parcel. Soil samples will be collected within the area for VOCs, SVOC, total RCRA Metals, hexavalent chromium, and pesticides. Site maps depicting the location of proposed soil, soil gas, and groundwater sample locations are provided as Figure 3 and Figure 4. Soil, Groundwater, and Soil Gas Sampling Work Plan Former Print Works Plant 1700, 1701, and 1707 Fairview Street Greensboro, Guilford County, North Carolina ECS Project Number: 49-7274 August 15, 2018 5 Owner and Prospective Developer’s Representative: Mr. Dave Vos Printworks Ventures, LLC 345 West Washington Avenue, Suite 301 Madison, Wisconsin 53703 Phone: 704-235-8946 dgv@alexandercompany.com Site Environmental Representative: Mr. Matthew H. McDuffie, P.G. ECS Southeast, LLP 1812 Center Park Drive, Suite D Charlotte, North Carolina 28217 Phone: 704-525-5152 mmcduffie@ecslimited.com Reporting A report of the results of the sampling outlined in this work plan will be submitted to NCBP. If unidentified and unexpected conditions are encountered during the assessment, we will consult with the NCBP. NCDEQ – NCDWM- NCBP Contact: William Schmithorst, Brownfields Project Manager william.schmithorst@ncdenr.gov NCDEQ, NCDWM, NCBP Phone: 919-707-8159 William Schmithorst, the Brownfields Project Manager, will be notified 5 days prior to starting the field work. Deviation from Approved Plan This work plan is intended to be dynamic and to be adapted to specific and actual site conditions. Accordingly, should such conditions warrant a change either by addition, deletion or modification of a procedure, such may be accomplished with agreement between Printworks Ventures, LLC’s representative and ECS after consultation with, and subject to approval by the NCBP. Such changes will comply with applicable local, State, and Federal rules and regulations. A written amendment shall be prepared and submitted to NCBP for approval (the use of e-mail correspondence shall suffice for approval, followed by a hard copy or electronic copy provided on Disk or similar media) prior to implementation. Amendments must have the approval of the NCBP prior to implementation. Soil, Groundwater, and Soil Gas Sampling Work Plan Former Print Works Plant 1700, 1701, and 1707 Fairview Street Greensboro, Guilford County, North Carolina ECS Project Number: 49-7274 August 15, 2018 6 5.0 SAMPLE COLLECTION 5.1 Soil Gas Number and Sample Location Three interior sub-slab soil gas samples will be collected from just beneath the slab of the vacant and former manufacturing facility. Additionally, one exterior soil gas sample will be collected within the vicinity of a former residential structures historically located on the western parcel. The sub-slab samples will be collected from a depth of approximately one foot bgs and the exterior soil gas sample will be collected from a depth of approximately five feet bgs. The approximate locations of the proposed samples are shown on Figure 3 & 4. Probe Placement and Sample Collection The soil gas sampling will be conducted in general accordance with the NCDEQ Vapor Intrusion Guidance (March 2018). The sub-slab soil gas samples will be collected by drilling through the concrete slab using a hammer drill. The exterior soil gas sample will be collected by drilling through exterior soils in the vicinity of the former residential structure. Once the boring has reached termination depth, dedicated Nylafow tubing and air stone will be lowered into the boring. Approximately two-inches of clean coarse sand will placed around the air stone. The remaining space above the sand will consist of bentonite powder which will be hydrated with distilled water. The soil gas probe will be allowed to stabilize for four hours before collection. A dedicated syringe will be used at each sample location and connected to the tubing to purge the tubing. Three volumes of the tubing will be purged prior to sample collection. The tubing will be connected to a 1 liter Summa canister, which will be used to collect the sample. The Summa canister will be fitted with a flow regulator. The flow rate for both purging and sample collection will be 0.2 liters per minute. The pressure in the canister will be recorded before and after sample collection. Sample collection will stop when the vacuum reaches approximately 5 inches of Hg. Other parameters that will be measured include ambient temperature before and after sample collection and weather conditions at the time of sample collection. Prior to sample collection a shut-in test will be conducted to assess for leaks. The probes will be removed and the holes filled with cement grout following sample collection. Leak Detection Prior to collecting the soil gas samples, laboratory grade helium gas will be used as a quality assurance control measure to confirm the integrity of the probe seal at each sample location. A plastic cylinder (approximately 1.75 quarts) will be placed and sealed over the sampling point and purged with laboratory grade helium. The probe point tubing and tracer gas tubing will be placed through the cylinder wall via rubber grommets. The cylinder will be placed on a 4-inch rubber gasket and held securely to the slab with a heavy weight. During the purging stage, the cylinder will be flooded with laboratory grade helium via the hose placed through the cylinder wall. A Model MGD-2002 Multi-Gas Leak detector or similar will be connected to the probe tube and the air stream being purged will be measured for helium. A helium concentration of less than one percent helium will be considered acceptable. If concentrations greater than one Soil, Groundwater, and Soil Gas Sampling Work Plan Former Print Works Plant 1700, 1701, and 1707 Fairview Street Greensboro, Guilford County, North Carolina ECS Project Number: 49-7274 August 15, 2018 7 percent helium is measured, the probe tube seal will be resealed and the leak detection process will be repeated. Sample Analysis Following sample collection, the canisters will be labeled and maintained under chain-of-custody until delivered to H&P Mobile Geochemistry Inc. in Carlsbad, California. A Chain-of-Custody document will be utilized throughout the collection and transportation of the samples. Each sample will be analyzed for VOCs using EPA Method TO-15. The laboratory results will be reported at or below the residential and non-residential vapor intrusion screening levels (VISLs) and J-Flags will be reported. Quality Control One duplicate sample will be collected and analyzed for the same compounds using EPA Method TO-15. 5.2 Geophysical Survey ECS will contract will a qualified professional to conduct a GPR survey at the site in the vicinity of the former residential structures, outside of the boiler room, and in the vicinity of the former UST/AST located to the north/northeast of the building located on the eastern parcel to screen for potential USTs or another geophysical anomalies. 5.3 Soil Sample Collection Soil Sampling Boring Activities ECS will contract with a North Carolina licensed drilling contractor to drill up to 9 soil borings using a Geoprobe® equipped with direct push technology to a depth of 5-15 ft bgs. Soil borings will be located in the vicinity of the machine shop, the reported gasoline UST/AST northeast of the building on the eastern parcel, possible petroleum UST associated with the boiler room on the west-central portion of the building on the eastern parcel, and railroad spur located along the northeastern portion of the eastern parcel and along the southwestern portion of the western parcel. The soil boring locations are depicted on Figures 3 and 4. Continuous soil samples will collected from the soil boring locations using a soil sampling probe lined with a dedicated disposable clear plastic tube. After the soil sampling probe is driven, the clear plastic tube filled with soil will be removed from the probe and cut open to expose the soil. ECS will visually classify the soil collected from each boring and screen the soil samples for relative levels of volatile organic vapors using a using a photo-ionization detector (PID) or FID. If elevated PID/FID readings or visual/olfactory observation evidence of soil impacts, ECS will denote on the soil boring log, collect a soil sample and submit to a North Carolina certified laboratory for chemical analysis under chain-of-custody protocol. The soil samples will be analyzed for SVOCs using EPA Method 8270, total RCRA metals by EPA Methods 6020/7470/7471, respectively, pesticides by EPA Method 8081B, and for VOCs using EPA Method 8260. The soil samples collected from the Machine Shop and Boiler Room will also be analyzed for hexavalent chromium (Cr+6) using EPA Soil, Groundwater, and Soil Gas Sampling Work Plan Former Print Works Plant 1700, 1701, and 1707 Fairview Street Greensboro, Guilford County, North Carolina ECS Project Number: 49-7274 August 15, 2018 8 Method 7196. The laboratory results will be reported at or below the Residential PSRGs and J Flags will be reported. Investigative derived waste (IDW) will be managed in accordance with the NCDEQ, Inactive Hazardous Sites Program Guidelines for Assessment and Cleanup (October 2015).Once the soil samples are collected, the drilling contractor will properly abandon the borings. Test Pitting Activities ECS will contract with a qualified contractor to advance up to 7 test pits in the vicinity of the former residential structures located on the eastern and western parcels to a total depth of approximately 5 ft bgs. The soil test pit locations are depicted on Figure 3 and 4. ECS will also provide an environmental professional to screen the soil within the test pits for relative levels of volatile organic vapors using a PID/FID. If elevated PID/FID readings or visual/olfactory observation evidence of soil impacts, ECS will denote on the soil boring log. ECS will collect a soil sample from a depth of 0-2 ft bgs and an additional soil sample from 4-5 ft bgs from each test pit to be submitted to a North Carolina certified laboratory under chain-of-custody protocol. For estimating purposes, up to fourteen soil samples will be collected from the test pits. The soil samples collected from the 0-2 ft bgs range will be analyzed for asbestos by EPA Method 600 and PAHs by EPA Method 8270, and lead by EPA Method 610. The soil samples collected from the 4-5 ft bgs range will be analyzed for SVOCs using EPA Method 8270, total RCRA metals plus hexavalent chromium by EPA Methods 6020/7470/7471/7196, respectively, pesticides by EPA Method 8081B, and for VOCs using EPA Method 8260. The laboratory results will be reported at or below the Residential PSRGs and J Flags will be reported. Once the soil samples are collected, the test pitting contractor will properly abandon the test pits. Quality Control Two duplicate samples will be collected and analyzed using VOCs and SVOCs using EPA Method 8260 and 8270, respectively, total RCRA metals plus hexavalent chromium using EPA Methods 6020/7470/7471/7196, and pesticides using EPA Method 8081. One matrix spike (MS) and one matrix spike duplicate (MSD) will be collected and analyzed per day. A Level II QA/QC package will be requested from the laboratory. 5.4 Groundwater Sample Collection Subsequent to soil sampling activities, up to four borings will be advanced to depth of five feet into the water table and converted to two-inch diameter permanent monitoring wells using Schedule 40 PVC. Prior to advancing the boring, the down hole equipment and drill rig will be decontaminated using a high pressure steam cleaner and municipal water. One additional monitoring well will be installed along the northeastern property boundary. The permanent monitoring wells will be installed with 10 feet of slotted PVC screen (0.01-inch slot widths) positioned to intersect the water table at the time of drilling. The annular space surrounding the screen and riser will consist of a sand pack from the bottom of the well to approximately two feet above the screened interval, approximately 2 feet of bentonite seal above the sand pack, and grout to the ground surface where the monitoring well will be finished with a flush-mounted protective steel manhole cover set within a Soil, Groundwater, and Soil Gas Sampling Work Plan Former Print Works Plant 1700, 1701, and 1707 Fairview Street Greensboro, Guilford County, North Carolina ECS Project Number: 49-7274 August 15, 2018 9 concrete pad. The well riser will be completed with a locking expandable cap with the manhole access cover. The proposed permanent monitoring well locations are depicted on Figure 3. ECS will supply the appropriate permits upon report issuance. After the monitoring wells have been installed, a relative survey assessing the top of casing elevation will be conducted of the newly installed wells and the previously existing on-site wells. Approximately 24 hours after the monitoring well installation activities are complete; the wells will be properly developed and purged of a minimum of five well volumes to ensure a hydraulic connection between the monitoring wells and the aquifer system. The three current on-site monitoring wells and the five new monitoring wells will be purged of a minimum of three well volumes and/or until the geochemical field measurements, which include temperature, pH, conductivity, and dissolved oxygen, stabilize prior to initiating low-flow groundwater sampling activities. ECS will utilize an YSI model 556MPS water quality meter calibrated using the manufacturers’ recommendations to assess geochemical parameters. One groundwater sample will be collected for laboratory analysis from each well using a peristaltic pump and dedicated tubing. The turbidity of each groundwater sample will be measured and recorded using a calibrated turbidity meter. Immediately after collection, the groundwater samples will be transferred into laboratory prepared bottles and shipped to a North Carolina certified laboratory under chain-of-custody protocol. IDW will be managed in accordance with the NCDEQ, Inactive Hazardous Sites Program Guidelines for Assessment and Cleanup (October 2015). The groundwater samples will be analyzed for SVOCs using EPA Method 8270, total RCRA metals by EPA Methods 6020/7470/7471, respectively, pesticides by EPA Method 8081, PFCs using EPA Method 537, and for VOCs using EPA Method 8260. One groundwater sample will be analyzed for Cr+6 using EPA Method 7196. Field sampling procedures for PFCs are highly specific. EPA 537 field sampling guidelines are found in Appendix A. The laboratory results will be reported at or below the respective NC2LGWQS and J Flags will be reported. Quality Control One duplicate sample will be collected and analyzed using VOCs and SVOCs using EPA Method 8260 and 8270, respectively, total RCRA metals plus hexavalent chromium using EPA Methods 6020/7470/7471/7196, pesticides using EPA Method 8081B, and PFCs using EPA Method 537. One trip blank per cooler will be analyzed for VOCs using EPA Method 8260. A Level II QA/QC package will be requested from the laboratory. Sample Report ECS will prepare a written report documenting the field activities, sampling procedures, sample locations, laboratory procedures and analytical results discussion, and conclusions for submission to the NCBP. The report will include sample location figures, sample data tables and a potentiometric. Soil bore logs and monitoring well installation logs/permits will be included in the report along with soil gas sampling field data, including leak testing and pressure readings. FIGURES TABLES APPENDIX SOURCE: USGS TOPOGRAPHIC MAP GREENSBORO and MCLEANSVILLE NC QUADRANGLES DATED 2016 1 : 24,000 FIGURE 1 SITE LOCATION MAP FORMER PRINT WORKS PLANT 1700, 1701, and 1707 FAIRVIEW STREET GREENSBORO, NORTH CAROLINA ECS PROJECT: 49:7274 SITE SOURCE: GOOGLE EARTH DATED 2018 SCALE AS SHOWN FIGURE 2 SITE FEATURES MAP FORMER PRINT WORKS PLANT 1700, 1701, and 1707 FAIRVIEW STREET GREENSBORO, NORTH CAROLINA ECS PROJECT: 49:7274 SITE ‘EASTERN PARCEL’ PIN: 7875261633 REAL ESTATE ID: 0027498 1700 FAIRVIEW ST PRINTWORKS VENTURES LLC ‘WESTERN PARCEL’ PIN: 787516235 REAL ESTATE ID: 0027497 1701 1707 FAIRVIEW ST PRINTWORKS VENTURES LLC Former Residential Structures FIGURE 3 SAMPLE LOCATION MAP SUBJECT PROERTY – EASTERN PARCEL FORMER PRINT WORKS PLANT 1700, 1701, and 1707 FAIRVIEW STREET GREENSBORO, NORTH CAROLINA ECS PROJECT: 49:7274 SOURCE: GOOGLE EARTH DATED FEBRUARY 2016 SCALE AS SHOWN SB-3/MW-3 SB-2/MW-2 SG-1 SB-7 SB-16 SB-14 SB-8 SB-13 SB-12 SB-6 SB-9 SB-10 SG-10 SG-9 SG-8 SG-7 SG-6 SG-5 SG-4 SG-3 SG-2 Boiler Room Former UST/AST 520 FEET Machine Shop SB-1/MW-1 SB-5 SB-15 Service Tank SB-4 LEGEND Approximate Location of Soil Sample Approximate Location of Soil and Groundwater Sample Approximate Location of Soil Gas Sample Approximate Location of Proposed Soil Sample – Test Pit Approximate Location of Proposed Soil Sample - Boring Approximate Location of Proposed Groundwater Sample Approximate Location of Proposed Soil Gas Sample Approximate Proposed Geophysical Assessment Area SB-11 LEGEND Approximate Location of Proposed Soil Sample – Test Pit Approximate Location of Proposed Soil Sample - Boring Approximate Location of Proposed Groundwater Sample Approximate Location of Proposed Soil Gas Sample FIGURE 4 SAMPLE LOCATION MAP SUBJECT PROPERTY – WESTERN PARCEL FORMER PRINT WORKS PLANT 1700, 1701, and 1707 FAIRVIEW STREET GREENSBORO, NORTH CAROLINA ECS PROJECT: 49:7274 SOURCE: GOOGLE EARTH DATED FEBRUARY 2016 SCALE AS SHOWN Former Residential Structures Sample ID SB-1 SB-2 SB-3 SB-4 SB-5 SB-6 SB-7 SB-8 SB-9 SB-10 SB-11 SB-12 SB-13 SB-14 SB-15 SB-16 Sample Collection Depth (ft.)3-4 2.5-3.5 3-4 4-6 13-15 3-4 3-4 3-4 2-4 3-4 3-4 9-11 13-15 13-15 4-6 13-15 Sample Date Method (Parameter) sec-Butylbenzene BQL 0.019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 626 16,350tert-Butylbenzene BQL 0.008 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 626 16,350 Method (Parameter)Acenaphthene BQL BQL 0.671 BQL BQL BQL BQL BQL 0.407 BQL BQL BQL BQL BQL BQL BQL 720 9,000AnthraceneBQLBQL1.04 BQL BQL BQL 0.373 BQL 0.764 BQL BQL BQL BQL BQL BQL BQL 3,600 46,000 Benzo(a)anthracene BQL 0.920 3.60 BQL BQL BQL 0.693 BQL 1.76 1.30 BQL BQL BQL BQL BQL BQL 0.16 2.9Benzo(b)fluoranthene 0.343 1.21 3.99 BQL BQL BQL 0.854 BQL 2.21 1.80 BQL BQL BQL BQL BQL BQL 0.16 2.9 Benzo(k)fluoranthene BQL 0.519 0.924 BQL BQL BQL BQL BQL 0.834 0.705 BQL BQL BQL BQL BQL BQL 1.6 29 Benzo(g,h,i)perylene BQL 0.368 0.953 BQL BQL BQL 0.388 BQL 0.442 0.351 BQL BQL BQL BQL BQL BQL NE NEBenzo(a)pyrene BQL 0.918 3.07 BQL BQL BQL 0.635 BQL 1.41 1.22 BQL BQL BQL BQL BQL BQL 0.016 0.29 Chrysene BQL 1.02 3.04 BQL BQL BQL 0.646 BQL 1.46 1.57 BQL BQL BQL BQL BQL BQL 16 290 Dibenzofuran BQL BQL 0.428 BQL BQL BQL BQL BQL 0.475 BQL BQL BQL BQL BQL BQL BQL NE NEFluoranthene0.409 1.40 5.48 BQL BQL BQL 1.24 BQL 2.61 2.45 BQL BQL BQL BQL BQL BQL 480 6,000 Fluorene BQL BQL 0.652 BQL BQL BQL BQL BQL 0.451 BQL BQL BQL BQL BQL BQL BQL 480 6,000Indeno(1,2,3-cd)pyrene BQL 0.439 1.14 BQL BQL BQL 0.410 BQL 0.544 0.449 BQL BQL BQL BQL BQL BQL 0.16 2.92-Methylnaphthalene BQL BQL BQL BQL BQL BQL BQL BQL 0.337 BQL BQL BQL BQL BQL BQL BQL 48 600 Phenanthrene BQL 1.37 5.20 BQL BQL BQL 1.49 BQL 2.65 1.94 BQL BQL BQL BQL BQL BQL NE NEPyrene0.419 1.47 5.40 BQL BQL BQL 1.16 BQL 2.78 2.58 BQL BQL BQL BQL BQL BQL 360 4,600 Notes: Results presented in parts per milliom (mg/kg)VOC = Volatile Organic Compound SVOC = Semi-volatile Organic Compound IHSB = Inactive Hazardous Sites BranchPSRG = Preliminary Soil Remediation Goal mg/kg = Milligrams per Kilogram BQL = Below Quantitation LimitNE = Not Established Bold = Detected Above the Residential PSRGUnderlined = Detected Above both the Residential PSRG and the Industrial PSRG EPA Method 8270 Industrial PSRGEPA Method 8260 9/27/2016 9/28/2016 Residential PSRG Table 1 Summary of VOC and SVOC Soil Sample Analytical Results Former Print Works Plant 1700, 1701, and 1707 Fairview Street Greensboro, Guilford County, North Carolina ECS Project Number: 49:7274 Sample ID SB-1 SB-2 SB-3 SB-4 SB-5 SB-6 SB-7 SB-8 SB-9 SB-10 SB-11 SB-12 SB-13 SB-14 SB-15 SB-16 Sample Date Sample Collection Depth (ft.)3-4 2.5-3.5 3-4 4-6 13-15 3-4 3-4 3-4 2-4 3-4 3-4 9-11 13-15 13-15 4-6 13-15 Barium 90.3 132 205 69.0 188 82.2 50.5 32.7 103 225 131 108 314 255 178 98.3 3,000 44,000 Cadmium BQL 4.15 0.489 BQL BQL 1.29 BQL BQL 19.2 1.14 BQL BQL BQL BQL BQL BQL 14 200 Chromium 45.5 28.9 40.8 124 25.1 32.7 14.6 8.37 79.9 41.1 26.8 23.3 46.0 4.01 6.07 64.9 24,000 100,000ArsenicBQLBQLBQLBQLBQLBQLBQLBQL9.84 BQL BQL BQL BQL BQL BQL BQL 0.68 3.0Lead16064.7 51.9 34.0 BQL 65.8 9.18 1.04 164 23.7 5.37 BQL 1.41 0.814 BQL BQL 400 800 Mercury 0.060 0.740 0.255 0.069 BQL 0.440 0.151 BQL 0.131 0.052 0.526 BQL BQL BQL BQL 0.060 1.9 3.1 Hexavalent Chromium NA NA NA NA NA BQL NA NA NA NA NA NA NA NA NA BQL 0.3 6.3 Notes:Results presented in parts per milliom (mg/kg) IHSB = Inactive Hazardous Sites Branch PSRG = Preliminary Soil Remediation Goalmg/kg = Milligrams per KilogramBQL = Below Quantitation Limit NA = Not Analyzed Bold = Detected Above the Residential PSRG Underlined = Detected Above both the Residential PSRG and the Industrial PSRG 9/27/2016 9/28/2016 Method (Parameter)EPA Method 7470 (mg/kg) Method (Parameter)EPA Method 6010 (mg/kg) Method (Parameter)EPA Method 7196 (mg/kg) Table 2 Summary of Metals Soil Sample Analytical Results Former Print Works Plant 1700, 1701, and 1707 Fairview Street Greensboro, Guilford County, North Carolina ECS Project Number: 49:7274 IHSB Residential PSRG IHSB Industrial PSRG Sample ID MW-1 MW-2 MW-3 Sample Date Method (Parameter) Benzene BQL 2.1 BQL 1 15.9 69.3cis-1,2-Dichloroethene BQL 0.9 BQL 70 NE NE Ethylbenzene BQL 16.8 BQL 600 34.9 152 1-Propylbenzene BQL 39.1 BQL NE NE NENaphthaleneBQL88.9 BQL 6 34.8 146n-Butylbenzene BQL 20.3 BQL 70 NE NE n-Propylbenzene BQL 50.6 BQL 70 486 2,040 sec-Butylbenzene BQL 27.1 BQL 70 NE NE tert-Butylbenzene BQL 15.1 BQL 70 NE NETotal Xylenes BQL 6.3 BQL 500 76.9 323 Method (Parameter) Naphthalene BQL 91.0 BQL 6 34.8 1462-Methylnaphthalene BQL 16.1 BQL 30 NE NE Method (Parameter) Barium 0.000052 0.000104 0.000234 700 NE NEChromium0.000005 0.000023 BQL 10 NE NELeadBQL0.000005 BQL 15 NE NE Method (Parameter) Mercury 0.0000004 0.0000005 0.0000003 1 0.178 0.747 Notes:Results presented in parts per billiom (ug/kg) NC2LGWQS = North Carolina 2L Groundwater Quality Standard as of April 1, 2013 Division of Waste Management Residential and Non-Residential Vapor Instrusion Screening Concentrations (October 2016)VISL = Vapor Intrustion Screening Level(µg/L) = Micrograms per Liter BQL = Below Quantitative Limit NE = Not Established Bold = Detected above the NC2LGWQSUnderlined = Detected above the NC2LGWQS and Residential GWSL EPA Method 245.1 NC2LGWQS Residential VISL Non-Residential VISLEPA Method 8260 EPA Method 8270 EPA Method 6010 Table 3 9/29/2016 Summary of Groundwater Sample Analytical Results Former Print Works Plant 1700, 1701, and 1707 Fairview Street Greensboro, Guilford County, North Carolina ECS Project Number: 49:7274 Sample ID SG-1 SG-2 SG-3 SG-4 SG-5 SG-6 SG-7 SG-8 SG-9 SG-10 Sample Date Method (Parameter) Benzene 5.3 BRL BRL BRL BRL BRL BRL BRL BRL BRL 120 1,570BromodichloromethaneBRLBRL11BRLBRLBRLBRLBRLBRLBRL25.3 331 Bromoform BRL BRL 74 BRL BRL BRL BRL BRL BRL BRL 851 11,100 2-Butanone 31 BRL 81 BRL BRL 31 BRL BRL BRL BRL 34,800 438,000 Carbon Disulfide 18 6.4 7.8 BRL BRL BRL BRL BRL BRL BRL 4,870 61,300 Chloroform 10 BRL 23 BRL BRL BRL BRL BRL BRL 9.5 40.7 533 Chloromethane BRL BRL 5.4 BRL BRL BRL BRL BRL BRL BRL 626 7,880DibromochloromethaneBRLBRL26BRLBRLBRLBRLBRLBRLBRLNENEEthylbenzene12177.8 6.2 4.9 12 2,100 BRL BRL 5.9 374 4,910 2-Hexanone BRL BRL 18 BRL BRL BRL BRL BRL BRL BRL 209 2,630 Styrene 23 26 16 14 11 23 BRL 5.5 7.6 13 6,950 87,600 Tetrachloroethene 40 90 13 26 BRL BRL BRL BRL BRL 9.2 278 3,500 Toluene 38 64 15 16 11 30 BRL 10 10 15 34,800 438,000TrichloroetheneBRL115.6 BRL BRL BRL BRL BRL BRL BRL 13.9 1751,1,1-Trichloroethane 58 BRL 6.7 9.7 BRL BRL BRL BRL BRL BRL 34,800 438,000 1,1,2-Trichlorotrifluoroethane BRL BRL 19 BRL BRL BRL BRL BRL BRL BRL 209,000 2,630,000 1,2,4-Trimethylbenzene BRL BRL 5 BRL BRL 5.5 BRL BRL BRL BRL 48.7 613 1,3,5-Trimethylbenzene BRL BRL BRL BRL BRL BRL 1,500 BRL BRL BRL NE NETotal Xylenes 58 91 37 34 25.4 57 6,700 15.9 15.4 31.6 695 8,760 Notes: Results presented in micrograms per cubic meter (ug/m3) NCDEQ Division of Waste Management Residential and Non-Residential Vapor Intrusion Screening Concentrations dated October 2016SGSL = Soil Gas Screening Levelug/m3 = Micrograms per Cubic Meter NE = Not Established NA = Not Analyzed BRL = Below Reporting Level Bold = Detected Above the Residential SGSL Residential SGSLs Non-Residential SGSLs EPA TO-15 1700, 1701, and 1707 Fairview Street Table 4 Summary of Soil Gas Sample Analytical Results Former Print Works Plant Greensboro, Guilford County, North Carolina ECS Project Number: 49:7274 9/28/2016