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HomeMy WebLinkAbout22076 West Boulevard Brownfields Assessment Work Plan Rev.1 (BPN 22076-18-060)_20190314i S:\AAA-Master Projects\Beacon Partners- BEP or BCP\BCP-126 The Square at South End\Brownfields Assessment Work Plan\final to DEQ\Brownfields Assessment Work Plan Rev.1_West Boulevard (BPN 22076- 18-060)_20190314.doc Brownfields Assessment Work Plan West Boulevard Charlotte, North Carolina Brownfields Project No. 22076-18-060 H&H Job No. BCP-126 Table of Contents 1.0 Introduction .............................................................................................................................1  1.1 Background ............................................................................................................................1  1.2 Previous Environmental Assessments ...................................................................................2  2.0 Brownfields Assessment Activities ........................................................................................6  2.1 Receptor Survey ....................................................................................................................6  2.2 Soil Sampling Activities ........................................................................................................7  2.3 Groundwater Sampling Activities .........................................................................................9  2.4 Soil Gas Sampling Activities ...............................................................................................11  2.5 Quality Assurance – Quality Control ..................................................................................13  2.6 Investigation Derived Waste ...............................................................................................14  2.7 Reporting .............................................................................................................................14  List of Figures Figure 1 Site Location Map Figure 2 Site Map Figure 3 Proposed Sample Location Map List of Appendices Appendix A Template Brownfields Property Receptor Survey Form Appendix B Preliminary Cut/Fill Analysis 1 S:\AAA-Master Projects\Beacon Partners- BEP or BCP\BCP-126 The Square at South End\Brownfields Assessment Work Plan\final to DEQ\Brownfields Assessment Work Plan Rev.1_West Boulevard (BPN 22076-18-060)_20190314.doc Brownfields Assessment Work Plan West Boulevard Charlotte, North Carolina Brownfields Project No. 22076-18-060 H&H Job No. BCP-126 1.0 Introduction On behalf of Common Square Development LLC (Prospective Developer or PD), Hart & Hickman, PC (H&H) is providing this Work Plan to conduct Brownfields assessment activities at the West Boulevard Brownfields property (Brownfields Project No. 22076-18-060) located at 200, 204, 208, 212, 216, and 224 West Boulevard, and 1721 and 1725 S. Tryon Street in Charlotte, Mecklenburg County, North Carolina (Site or subject Site). The Site consists of eight contiguous parcels totaling approximately 1.9 acres of land located in a mixed commercial and residential area of South End Charlotte. A Site location map is provided as Figure 1. The southern portion of the Site along West Boulevard is developed with three former residences that have most recently been used for commercial purposes including a salon, a clothing store, and a law office. The western portion of the Site at the West Boulevard and S. Tyron Street intersection is developed with a restaurant building and the northwestern portion of the Site along S. Tryon Street is developed with a vacant residence. Remaining portions of the Site include vacant undeveloped parcels. Surrounding properties include the Wilmore Centennial Park located to the north, a high-density residential apartment complex located to the east, West Boulevard and the Carolina Foods facility located to the south, and S. Tryon Street with a restaurant and residences located to the west. The Site and surrounding area are shown in Figure 2. 1.1 Background The southern portion of the Site along West Boulevard and the western portion of the Site along S. Tryon Street were developed with residences as early as the 1920s. The residential structures were removed from the Site over time or were converted for use as commercial tenant spaces with the exception of the residence located at 1725 S. Tryon Street. The 1725 S. Tryon Street 2 S:\AAA-Master Projects\Beacon Partners- BEP or BCP\BCP-126 The Square at South End\Brownfields Assessment Work Plan\final to DEQ\Brownfields Assessment Work Plan Rev.1_West Boulevard (BPN 22076-18-060)_20190314.doc building is currently unoccupied, but has remained residential over time. The western corner of the Site at the West Boulevard and S. Tryon Street intersection was undeveloped land as early as the 1920s until the late 1940s to early 1950s when it was developed with a gasoline filling station facility. Operations on the western corner parcel included a filling station until the 1960s, an auto repair and detailing business from the 1970s until the 1980s, and a restaurant from the 1980s until the early to mid-2000s. The western Site building remained vacant from the mid- 2000s until the current restaurant (Sauceman’s) opened in approximately 2010. Historically, properties adjacent to the Site were developed primarily for residential purposes prior to the late 1920s. Several industrial and/or commercial facilities including a silk mill, a brass foundry, a linen manufacturing and dyeing facility, and a food manufacturing facility operated south of the Site as early as the 1920s. In the early to mid-1960s commercial development increased to the south of the Site when the current Carolina Foods facility expanded. By the 1990s, the Site area transitioned into a mixed commercial and residential area of South End Charlotte. In recent years, properties in the vicinity of the Site to the north and east have rapidly been redeveloped for high-density residential and commercial/retail purposes along the nearby Lynx Blue Line light-rail. 1.2 Previous Environmental Assessments Coastal Environmental Consulting, Inc (CEC) completed soil and groundwater assessment activities at the Site between 2009 and 2015 to evaluate the potential for impacts associated with on-Site filling station/auto repair operations and from potential off-Site sources. H&H has reviewed the following CEC prepared reports and provided a brief summary of the assessment results below:  Phase I & Limited Phase II Environmental Site Assessment, Commercial Site, 0.302 +/- Acres, 224 & 228 West Boulevard, Charlotte, North Carolina dated March 2009 CEC reported that results of ground penetrating radar (GPR) survey activities completed at the Site in December 2007 did not identify underground storage tanks (USTs) in the area of the 3 S:\AAA-Master Projects\Beacon Partners- BEP or BCP\BCP-126 The Square at South End\Brownfields Assessment Work Plan\final to DEQ\Brownfields Assessment Work Plan Rev.1_West Boulevard (BPN 22076-18-060)_20190314.doc former gasoline filling station operations in the western portion of the Site. March 2009 assessment activities completed by CEC consisted of collection of soil samples for laboratory analysis of total petroleum hydrocarbons as gasoline range organics and diesel range organics (TPH-GRO and TPH-DRO) in the area of the former UST systems. In addition, a groundwater sample was collected for laboratory analysis of volatile organic compounds (VOCs) in the area of the former UST basin. Approximate CEC soil and groundwater sample locations are shown in Figure 2. Laboratory analytical results of soil samples collected from the UST basin and dispenser islands indicated that TPH-GRO and TPH-DRO were not detected above the laboratory reporting limits. No petroleum-related compounds were detected in the groundwater sample collected from the UST basin, however a low level of trichloroethene (TCE) was detected at 5.42 micrograms per liter (µg/L) which exceeds the North Carolina Department of Environmental Quality (DEQ) 2L Groundwater Quality Standards (2L Standard) of 3.0 µg/L and the DEQ Division of Waste Management (DWM) Residential Vapor Intrusion Groundwater Screening Level (GWSL) of 1.0 µg/L and the DWM Non-Residential GWSL of 4.4 µg/L.  Soil and Groundwater Sampling Report, Commercial Site, 0.302 +/- Acres, 224 & 228 West Boulevard, Charlotte, North Carolina dated February 2010 In January 2010, CEC completed additional soil and groundwater assessment activities in the western portion of the Site to further evaluate the source of TCE impacts identified in the March 2009 groundwater sample. Four temporary groundwater monitoring wells were installed along the southern Site boundary near West Boulevard for collection of groundwater samples in upgradient portions of the Site to evaluate the potential for impacts from off-Site sources (Figure 2). CEC collected two soil samples (shallow and deeper soil samples) from each temporary monitoring well boring and two additional soil samples were collected from a boring advanced in the area of the former UST basin. The soil and groundwater samples were submitted for laboratory analysis of VOCs. 4 S:\AAA-Master Projects\Beacon Partners- BEP or BCP\BCP-126 The Square at South End\Brownfields Assessment Work Plan\final to DEQ\Brownfields Assessment Work Plan Rev.1_West Boulevard (BPN 22076-18-060)_20190314.doc Soil sample analytical results indicated that no VOCs were detected at concentrations above the laboratory reporting limits in any of the ten (10) January 2010 soil samples. Groundwater assessment results indicated that low levels of TCE (up to 13.5 ug/L) were detected at concentrations exceeding the 2L Standards and GWSLs in each of the upgradient southern Site boundary groundwater samples.  Limited Soil and Groundwater Assessment, Sauceman's Restaurant, 220, 224 & 228 West Blvd, Charlotte, North Carolina, dated September 8, 2015 In August 2015, CEC personnel completed receptor survey activities in a 1,500 ft radius of the Site as well as additional soil and groundwater assessment activities along the southern Site boundary. Receptor survey results did not identify water supply wells, wellhead protection areas, or surface water bodies located within the receptor survey search radii. Soil and groundwater assessment activities included advancing four soil borings for collection of shallow and deeper soil samples. Upon completion of the soil sampling activities, temporary groundwater monitoring wells were installed within three of the four soil borings for collection of groundwater samples (Figure 2). Soil and groundwater samples were submitted for laboratory analysis of VOCs. Soil sample analytical results indicate that no compounds were detected at concentrations exceeding the DEQ Inactive Hazardous Sites Branch (IHSB) Preliminary Soil Remediation Goals (PSRGs) in any of the soil samples. Several compounds were detected in the groundwater samples at concentrations exceeding the laboratory reporting limits. Low levels of tetrachloroethene or PCE (up to 3.8 µg/L) were detected in each groundwater sample at concentrations exceeding the 2L Standard of 0.7 µg/L. In addition, 1,1-dichloroethene (13 µg/L) was detected in one of the three groundwater samples at a concentration exceeding the 2L Standard of 7 µg/L. Similar to previous groundwater assessment activities completed along the southern Site boundary, TCE (up to 49 µg/L) was detected in each groundwater sample at concentrations exceeding the 2L Standards and GWSLs. 5 S:\AAA-Master Projects\Beacon Partners- BEP or BCP\BCP-126 The Square at South End\Brownfields Assessment Work Plan\final to DEQ\Brownfields Assessment Work Plan Rev.1_West Boulevard (BPN 22076-18-060)_20190314.doc In summary, CEC assessment results indicate that former UST systems associated with historical filling station operations are no longer present at the Site. In addition, results of soil and groundwater assessment activities completed in the area of the former UST systems did not identify evidence of a release in connection with historical filling station/auto repair operations. However, results of assessment activities completed on the southern and topographically upgradient Site boundary indicate that chlorinated solvent groundwater impacts are present in the western portion of the Site and are attributed to an unknown off-Site source. The Site received eligibility into the DEQ Brownfields Program via a Letter of Eligibility dated January 7, 2019. The PD elected to participate in the Brownfields Program Redevelopment Now option to expedite the Brownfields process. As part of this process, a kick-off/data gap meeting with the PD, counsel for the PD, DEQ Brownfields personnel, and H&H was held on January 23, 2019 to discuss historical uses of the Site, available environmental information, proposed redevelopment plans, data gaps, and the proposed schedule for completing the Brownfields agreement. The PD plans to redevelop the West Boulevard Brownfields property for high density residential, office, and retail uses known as The Square at South End. Based on the proposed redevelopment plan for the Site and conversations with DEQ Brownfields during the recent kick-off/data gap meeting, H&H proposes to conduct groundwater and soil gas assessment activities at the Site to further evaluate subsurface conditions for potential impacts. In addition, H&H proposes to collect soil samples to evaluate the potential for impacts in areas of proposed cut during grading as well as along the roof drip lines associated with former and existing residential buildings at the Site. H&H will also collect background soil samples to establish Site-specific ranges for naturally occurring metals. Although CEC completed receptor survey activities in the area surrounding the Site as part of the 2015 assessment activities, H&H will complete receptor survey activities for DEQ Brownfields purposes. The proposed Brownfields assessment activities are outlined in the following sections. 6 S:\AAA-Master Projects\Beacon Partners- BEP or BCP\BCP-126 The Square at South End\Brownfields Assessment Work Plan\final to DEQ\Brownfields Assessment Work Plan Rev.1_West Boulevard (BPN 22076-18-060)_20190314.doc 2.0 Brownfields Assessment Activities The proposed assessment activities will be performed in general accordance with the DEQ IHSB Guidelines for Assessment and Cleanup (Guidelines) dated October 2015, the DEQ DWM Vapor Intrusion Guidance (VI Guidance) dated March 2018, and most recent versions of the U.S. Environmental Protection Agency (EPA) Region IV Science and Ecosystem Support Division (SESD) Field Branches Quality System and Technical Procedures guidance. Prior to conducting field activities, H&H will contact North Carolina 811, the public utility locator, to mark subsurface utilities located on the Site. H&H will also contract with a private utility locator to screen proposed sample locations for subgrade utilities that may not be marked by the public locator. Additionally, soil boring locations will be hand cleared to approximately 5 feet (ft) below the ground surface (bgs) prior to use of mechanical drilling equipment to further screen the boring locations for the presence of subsurface utilities. In accordance with Mecklenburg County rules, H&H will also obtain a Subsurface Investigation Permit (SIP) from Mecklenburg County prior to temporary monitoring well installation and sampling. After completion of the assessment activities, H&H will update the SIP on the Mecklenburg County Well Information database with North Carolina licensed driller temporary monitoring well abandonment records. 2.1 Receptor Survey H&H will perform a Brownfields receptor survey in accordance with DEQ Brownfields Program guidance to update the receptor survey information obtained by CEC in 2015. The receptor survey will include information about land use in the Site area including zoning. H&H will also conduct a field search for water supply wells, basements, utility manways and chases, storm sewers, other underground utilities, drains, and surface water within a 1,500 ft radius of the Brownfield property boundaries. In addition, H&H will review the online Mecklenburg County Well Information System for potential wells in the area and, if warranted, contact utility companies for information concerning underground utilities in the immediate area of the Site. 7 S:\AAA-Master Projects\Beacon Partners- BEP or BCP\BCP-126 The Square at South End\Brownfields Assessment Work Plan\final to DEQ\Brownfields Assessment Work Plan Rev.1_West Boulevard (BPN 22076-18-060)_20190314.doc The receptor survey will be completed using the most current version of the Brownfields Property Receptor Survey form. A copy of a template Brownfields Property Receptor Survey form is provided as Appendix A. 2.2 Soil Sampling Activities Review of preliminary cut/fill analysis for the proposed redevelopment indicates that approximately 600 cubic yards of import fill will be required to achieve final grade elevations. A copy of the preliminary cut/fill analysis is provided as Appendix B. As shown in the cut/fill analysis “heat map”, grading activities will include cut to depths up to 5 ft bgs in the northwestern portion of the Site. Soil generated during grading activities is expected to be re- used on-Site as part of redevelopment activities. Background and Cut Area Soil Sampling Activities To evaluate the potential for impact in areas of cut and to assist in management of soil during grading activities, H&H proposes to advance three (3) soil borings in the northwestern portion of the Site to depths corresponding to the approximate planned cut depths. In addition, H&H proposes to advance two (2) shallow soil borings for collection of soil samples from areas at the Site that do not appear to have been affected by historical uses to evaluate background concentrations of metals. Proposed soil sample locations in areas of cut are shown in Figure 3. The locations of the background soil borings will be determined based on field observations and review of available historical resources. The soil borings will be advanced utilizing a decontaminated stainless steel hand auger. Continuous soil samples will be collected from the center of the hand auger bucket at each boring. Soil samples will be logged for lithological description and field screened for indication of potential impacts by observation for staining, odors, and the presence of organic vapors using a calibrated photoionization detector (PID). Based on field screening results, one soil sample will be collected from each soil boring for laboratory analysis from the depth interval interpreted most likely to be impacted. If there is no obvious indication of potential impact in a soil boring based on field screening results, a soil sample will be collected from shallow soil (i.e., no greater 8 S:\AAA-Master Projects\Beacon Partners- BEP or BCP\BCP-126 The Square at South End\Brownfields Assessment Work Plan\final to DEQ\Brownfields Assessment Work Plan Rev.1_West Boulevard (BPN 22076-18-060)_20190314.doc than 3 ft bgs). Following collection, the soil samples will be placed directly into dedicated laboratory supplied sample containers, labeled with the sample identification, date, time, and requested analysis, and placed in a laboratory supplied cooler with ice. Soil samples from areas of proposed cut will be will be submitted to a North Carolina certified laboratory under standard chain of custody protocols for analysis of VOCs by EPA Method 8260, semi-VOCs (SVOCs) by EPA Method 8270, and Resource Conservation and Recovery Act (RCRA) metals plus hexavalent chromium by EPA Methods 6020/7471/7199. Background soil samples will be submitted for analysis of RCRA metals plus hexavalent chromium by EPA Methods 6020/7471/7199. Drip Line Soil Sampling Activities H&H proposes to collect shallow samples within the drip line of former and exiting residential structures to evaluate potential impacts from lead-based paint. Please note that the Site building located at 200 West Boulevard is an unpainted brick structure. As such, no drip line soil samples are proposed for the 200 West Boulevard portion of the Site. The locations of the former and exiting residential structures for drip line soil assessment are shown in Figure 2 and include the following locations:  1721 S. Tryon Street  1725 S. Tryon Street  204 West Boulevard  208 West Boulevard  212 West Boulevard  216 West Boulevard  224 West Boulevard One soil sample aliquot will be collected from 0-1 ft bgs on each side of the residences using a decontaminated stainless steel hand auger. Continuous soil samples will be collected from the center of the hand auger bucket at each soil boring and described for lithologic purposes, observed for the presence of staining, and field screened for elevated volatile organic vapors 9 S:\AAA-Master Projects\Beacon Partners- BEP or BCP\BCP-126 The Square at South End\Brownfields Assessment Work Plan\final to DEQ\Brownfields Assessment Work Plan Rev.1_West Boulevard (BPN 22076-18-060)_20190314.doc using a calibrated PID. The soil sample aliquots will be combined and homogenized to form one composite soil sample representative of drip line soil for each residence. Soil samples selected for laboratory analysis will be collected directly into laboratory supplied glassware, labeled with the sample identification, date, time, and requested analysis and placed on ice in a laboratory supplied cooler. The samples will be delivered to a North Carolina certified laboratory under standard chain of custody protocols for analysis of RCRA metals by EPA Method 6020/7471. Following sampling activities, the soil borings will be properly abandoned and the surface will be repaired similar to pre-assessment conditions. Additionally, the soil sample locations will be estimated using a hand-held global positioning system (GPS) unit. 2.3 Groundwater Sampling Activities H&H will contract a qualified drilling contractor to advance borings for installation of four (4) temporary groundwater monitoring wells at the Site. Two temporary monitoring wells will be installed along the eastern Site boundary near Hawkins Street, one temporary monitoring well will be installed near the southern Site boundary near West Boulevard in the area of previous CEC assessments, and one temporary monitoring well will be installed in the downgradient (northwestern) portion of the Site near S. Tryon Street. Proposed temporary monitoring well locations are shown in Figure 3. The temporary groundwater monitoring well borings will be advanced with a track-mounted drill rig capable of utilizing direct push technology (DPT) drilling techniques. If refusal is encountered prior to reaching the water table in a proposed temporary groundwater monitoring well location, H&H will instruct the driller to utilize alternative drilling techniques to advance the boring to depths corresponding to the water table. H&H anticipates the depth to water to be approximately 15 to 20 ft bgs. During drilling, continuous soil samples will be collected from each boring and logged for lithologic description and field screened for the presence of staining, odors, and the presence of organic vapors using a calibrated PID. Each temporary monitoring well will be constructed of 1-inch diameter PVC well screen set to bracket the water table and 1- 10 S:\AAA-Master Projects\Beacon Partners- BEP or BCP\BCP-126 The Square at South End\Brownfields Assessment Work Plan\final to DEQ\Brownfields Assessment Work Plan Rev.1_West Boulevard (BPN 22076-18-060)_20190314.doc inch diameter PVC well casing to the ground surface. A sand filter pack will be placed from the bottom of the borings to approximately 2 ft above the top of the well screens. The temporary wells will be completed by placing a minimum of 2ft of hydrated bentonite seal above the sand filter pack. Once the temporary monitoring wells are installed, the wells will be allowed to equilibrate to static conditions, and a decontaminated electronic water level indicator will be used to measure the depth to the water table relative to the ground surface and to the top of the well casing in each well. The elevation of the ground surface and top of casing for each well will be surveyed relative to an on-Site datum. Using the measured depths to the water table and survey measurements, H&H will calculate groundwater elevations at each well location and estimate groundwater flow direction at the Site. The wells will then be developed by removing a minimum of 3 to 5 volumes and until field parameters have stabilized (pH± 0.1 Standard Units [SU] and conductivity varies no more than 5%). After development, groundwater samples will be collected utilizing low flow/low stress purging techniques using a peristaltic pump or bladder pump and dedicated polyethylene tubing. The intake point of the pump tubing will be placed in the approximate mid-portion of the screened interval of the well, and groundwater will be removed at a rate no greater than 200 milliliters per minute. H&H will utilize water quality meters to collect measurements of pH, temperature, dissolved oxygen, oxidation reduction potential, turbidity, and specific conductivity at three to five-minute intervals during the purging process. Purging will be considered complete when the field parameters stabilize (pH ± 0.1 SU, conductivity varies no more than 5%, and turbidity is less than 10 Nephelometric Turbidity Units [NTUs]). Once groundwater parameters stabilize, groundwater samples for VOC analysis will be collected directly into laboratory supplied sample containers using the “soda straw” method to eliminate the potential for volatile compound loss through the pump head. Samples collected for the remaining analyses will be collected directly into laboratory supplied sample containers from the dedicated sample tubing discharge. The sample containers will be labeled with the sample 11 S:\AAA-Master Projects\Beacon Partners- BEP or BCP\BCP-126 The Square at South End\Brownfields Assessment Work Plan\final to DEQ\Brownfields Assessment Work Plan Rev.1_West Boulevard (BPN 22076-18-060)_20190314.doc identification, date, time, and requested analysis, and placed in a laboratory supplied cooler with ice. The groundwater samples will be delivered to a North Carolina certified laboratory under standard chain of custody protocols for analyses of VOCs by EPA Method 8260 and SVOCs by EPA Method 8270, and RCRA metals by EPA Methods 6020/7471. Following installation and sampling activities, the groundwater sample locations will be estimated using a hand-held GPS unit. Following surveying activities, the temporary monitoring wells will be properly abandoned by a licensed well driller. 2.4 Soil Gas Sampling Activities H&H proposes to collect exterior soil gas samples within the footprint of proposed buildings to evaluate the potential for vapor intrusion into future structures. The proposed soil gas sample locations are depicted on Figure 3. The soil gas monitoring points will be installed utilizing the track-mounted DPT drill rig to advance soil borings to approximately 5 to 10 ft bgs. Actual depths of the proposed soil gas monitoring points will be based on depths to groundwater established during proposed groundwater assessment activities and will be at depths greater than 5 ft bgs and more than approximately 5 ft above the measured depth to the water table in the nearest proposed temporary monitoring well. After advancing the boring to depth, a six-inch stainless steel vapor implant screen point fitted with ¼-inch diameter Teflon® tubing will be placed at the base of each borehole. Filter sand will be placed from the base of the boring to 6 inches above the screened interval and the sampling points will be completed by placing hydrated bentonite from the top of the filter sand to the ground surface. Prior to sample collection, a leak check will be conducted at each soil gas monitoring point by constructing a shroud around the sampling system and flooding the air within the shroud with helium gas. Helium within the shroud will be monitored using a helium gas detector. Using a 12 S:\AAA-Master Projects\Beacon Partners- BEP or BCP\BCP-126 The Square at South End\Brownfields Assessment Work Plan\final to DEQ\Brownfields Assessment Work Plan Rev.1_West Boulevard (BPN 22076-18-060)_20190314.doc syringe and three-way valve, the sample screen, sand filter pack, and sample tubing will be purged of minimum of three volumes. Vapor from the soil gas sample tubing will then be collected outside of the shroud into a Tedlar® bag and analyzed using the helium gas detector to ensure that helium concentrations are less than 10% of the concentration measured within the shroud. Following a successful leak check, the soil gas samples will be collected into laboratory supplied stainless steel Summa sample canisters connected to in-line flow controllers with a laboratory calibrated vacuum gauge. The flow controller will be connected to the sample tubing at each soil gas sampling point using a brass nut and ferrule assembly to form an air-tight seal. The flow regulator will be pre-set by the laboratory to regulate the soil gas sample intake to a rate no greater than 200 milliliters per minute. Once the sample train is assembled, the intake valve on the canister will be fully opened to begin collection of the soil gas sample. Vacuum readings on the Summa canister will be recorded prior to and following the sampling period to ensure adequate sample volume was collected. A vacuum will be maintained within the canisters at the conclusion of the sampling event. After sample collection, the intake valve will be closed, and the regulator will be disconnected from the canister. The starting and ending vacuum in each canister will be recorded on the chain- of-custody and submitted to the laboratory along with the samples. The canisters will be placed in laboratory supplied shipping containers, properly labeled, and shipped under standard chain of custody protocols to a qualified laboratory for analysis of VOCs by EPA Method TO-15. Following sampling activities, the soil gas monitoring point locations will be estimated using a hand-held GPS unit. The soil gas monitoring points will then be abandoned and the ground surface will be repaired similar to pre-drilling conditions. 13 S:\AAA-Master Projects\Beacon Partners- BEP or BCP\BCP-126 The Square at South End\Brownfields Assessment Work Plan\final to DEQ\Brownfields Assessment Work Plan Rev.1_West Boulevard (BPN 22076-18-060)_20190314.doc 2.5 Quality Assurance – Quality Control Non-dedicated equipment and tools will be decontaminated prior to use at each boring or sampling location or following exposure to soil or groundwater. The following samples will be collected for quality assurance/quality control (QA/QC) purposes:  One duplicate groundwater sample will be collected and analyzed for the same parameters as the parent sample.  One duplicate soil sample will be collected and analyzed for the same parameters as the parent sample.  One duplicate soil gas sample will be collected and analyzed for VOCs by EPA Method TO-15.  One trip blank will accompany the groundwater samples during sampling activities and during sample shipment. The trip blank will be analyzed for VOCs by EPA Method 8260. Laboratory QA/QC procedures will be employed to ensure appropriate sample handling and analysis and to aid in the review and validation of the analytical data. QA/QC procedures will be conducted in accordance with the method protocols and will include regular equipment maintenance, equipment calibrations, and adherence to specific sample custody and data management procedures. Samples will be analyzed in conjunction with appropriate blanks, laboratory duplicates, continuing calibration standards, surrogate standards, and matrix spiking standards in accordance with approved methodologies to monitor both instrument and analyst performance. Laboratory reporting limits for each analyte will be at or below appropriate screening criteria, where possible. Additionally, H&H will request that the laboratory include estimated concentrations for compounds that are detected at levels above the laboratory method detection limit, but below the laboratory reporting limit (J flags). The laboratory analytical data report and QA package for each group of samples submitted to and analyzed by the subcontracted laboratory will be provided in an appendix to the final report. Laboratory QA data consistent with Level II documentation will be provided for this project. 14 S:\AAA-Master Projects\Beacon Partners- BEP or BCP\BCP-126 The Square at South End\Brownfields Assessment Work Plan\final to DEQ\Brownfields Assessment Work Plan Rev.1_West Boulevard (BPN 22076-18-060)_20190314.doc A copy of the completed chain-of-custody record and shipping receipt will be appended to the corresponding laboratory analytical report included with the final report. 2.6 Investigation Derived Waste Investigation derived waste (IDW) generated during the proposed assessment activities will be managed in general accordance with DEQ IHSB Guidelines. IDW generated during the assessment activities will be thin spread on-Site. However, if significant impacts are suspected (i.e., elevated PID readings, free-product, etc.) soil cuttings and groundwater will be containerized in 55-gallon drums and staged on-Site pending analytical results of a composite IDW sample. Based on laboratory analytical results of IDW samples, the drums will be transported off-Site to a suitable facility for disposal. 2.7 Reporting Following completion of the assessment activities and receipt of the analytical data, H&H will document our findings in a Brownfields assessment report. The report will include a description of the sampling activities, a figure depicting sample locations, soil boring logs, temporary monitoring well and exterior soil gas monitoring point construction details, laboratory analytical data, a discussion of the data in comparison to regulatory screening levels, and conclusions and recommendations concerning our activities. 0 2000 4000 APPROXIMATE SCALE IN FEET N U.S.G.S. QUADRANGLE MAP QUADRANGLE 7.5 MINUTE SERIES (TOPOGRAPHIC) CHARLOTTE EAST, NORTH CAROLINA 1991 TITLE PROJECT SITE LOCATION MAP WEST BOULEVARDS. TRYON STREET AND WEST BOULEVARDCHARLOTTE, NORTH CAROLINA DATE: JOB NO: REVISION NO: FIGURE: 2-13-19 0 1BCP-126 SITE SITE B-1B-2B-3/GW-1TW-1TW-2TW-3TW-4TW-5B-6B-7B-9HA W K I N S S T R E E T S. TRYON STREETCENTRO BROWNFIELDS SITE(ID# 16048-12-060)CAROLINA FOODS INC.(1807 S. TRYON STREET)WEST BOULEVARDWILMORE CENTENNIALPARK AT SOUTHENDUNDEVELOPEDB-8SITE MAP2923 South Tryon Street-Suite 100Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 GeologyJOB NO. BCP-126REVISION NO. 0DATE: 3-14-19FIGURE NO. 2LEGENDSITE PROPERTY BOUNDARYSOIL BORING LOCATION (MARCH 2009)CO-LOCATED SOIL BORING/TEMPORARY GROUNDWATERMONITORING WELL LOCATION (MARCH 2009)SOIL BORING LOCATION (FEBRUARY 2010)CO-LOCATED SOIL BORING/TEMPORARY GROUNDWATERMONITORING WELL (FEBRUARY 2010)SOIL BORING LOCATION (SEPTEMBER 2015)CO-LOCATED SOIL BORING/TEMPORARY GROUNDWATERMONITORING WELL (SEPTEMBER 2015)WEST BOULEVARDS. TRYON STREET AND WEST BOULEVARDCHARLOTTE, NORTH CAROLINANOTES:1.AERIAL IMAGERY AND PARCEL BOUNDARY DATA OBTAINED FROM MECKLENBURG COUNTY GIS.2.LOCATION OF FORMER RESIDENTIAL STRUCTURES OBTAINED FROM HISTORICAL RESOURCES. VACANT RESIDENCE(1725 S. TRYON ST)SAUCEMAN'S RESTAURANT(228 WEST BLVD)EX P R E S S I O N S O F C O L O R BE A U T Y S A L O N (21 6 W E S T B L V D ) VA C A N T (21 2 W E S T B L V D ) VA C A N T (20 8 W E S T B L V D ) 7 C O M P L E T E F A S H I O N S BO U T I Q U E / F R E S H K U T T S H A I R S A L O N (20 4 W E S T B L V D ) GO R M A N L A W F I R M , P L L C (20 0 W E S T B L V D )VACANT(1721 S. TRYON ST)PA R K I N G A R E A S (22 4 W E S T B L V D )LOCATION OF FORMER RESIDENTIALSTRUCTURES:\AAA-Master Projects\Beacon Partners- BEP or BCP\BCP-126 The Square at South End\Figures\Site Map.dwg, FIG 2 (2), 3/14/2019 2:06:50 PM, amckenzie HA W K I N S S T R E E TWEST BOULEVARDS. TRYON STREETPROPOSED SAMPLE LOCATION MAP2923 South Tryon Street-Suite 100Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 GeologyJOB NO. BCP-126REVISION NO. 0DATE: 2-20-19FIGURE NO. 3LEGENDBROWNFIELDS PROPERTY BOUNDARYPROPOSED SOIL GAS MONITORING POINT LOCATIONPROPOSED SOIL BORING LOCATIONPROPOSED TEMPORARY GROUNDWATER MONITORINGWELL LOCATIONWEST BOULEVARDS. TRYON STREET AND WEST BOULEVARDCHARLOTTE, NORTH CAROLINANOTES:1.AERIAL IMAGERY AND PARCEL BOUNDARY DATAOBTAINED FROM MECKLENBURG COUNTY GIS.2.PROPOSED SAMPLE LOCATIONS AREAPPROXIMATE BASED ON CONCEPTUAL SITEREDEVELOPMENT RENDERING.S:\AAA-Master Projects\Beacon Partners- BEP or BCP\BCP-126 Common Square\Brownfields Assessment Work Plan\Figures\Site Map.dwg, FIG 2 (3), 2/20/2019 7:41:23 AM, amckenzie Appendix A Template Brownfields Property Receptor Survey Form North Carolina Department of Environmental Quality Division of Waste Management Brownfields Program Site: Address: City: County: Brownfields Project Number: Property and Building Characteristics a. Provide occupancy and use information. c. Describe the foundation construction. Include details on type, floor construction, and depth below grade. e. Are any subslab ventilation systems or moisture barriers in place? If so, please provide details. d. Describe the HVAC system in the building. Include available details on type, equipment location, source of air return, and design considerations (e.g. positive pressure?). % of property that is grassed areas (unpaved) % of property that is agricultural crops % of property that is paved Size of Property (acres) BROWNFIELDS PROPERTY RECEPTOR SURVEY This form was created to clarify and simplify preparing a receptor survey for a brownfield site. Please provide the information requested below. Distances are measured from the site property boundary unless otherwise indicated by the DEQ Brownfield’s Project Manager (PM). Current Usage Proposed UsageSurface Conditions % of property that is wooded/brush If an existing building is on-site, please respond to the following. Information can be provided on additional sheets as needed. If numerous buildings are on-site, consult with your PM as only information on specific buildings may be needed. b. Describe the construction of the builidng including materials (e.g. wood frame, block), type and size of openings (e.g. windows, bay doors), and height (number of stories). % of property that is covered by buildings Rev. 09/2015 Page 1 of 3 North Carolina Department of Environmental Quality Division of Waste Management Brownfields Program Surrounding Property Land Use North-Northwest South East-Northeast West-Southwest Utilities Is there a septic system on-site? (Y or N) Please provide the utility providers for the subject property a. Natural Gas b. Sewer c. Electricity d. Other For surrounding properties, please complete the following table with available information. Is there a residence within 1,000 ft of the Property? Specific Land Uses of Interest Y/N * Distance (ft) Is a sanitary sewer within 100 ft of the Property boundary? For the subject property, please provide a map of known buried utilites. If available, include depth to top, construction material, and diameter of the utilities. In addition, please provide the following information on utilty providers. If additional assessment is required, the public utility locators should be contacted. This information can then be added to a site map. Y/N * Please provide information on the following land uses in the vicinity of the subject site, including a map of the surrounding areas. If specific receptors are present, please provide addresses of the facilities. DirectionUtility/Potential Receptor Is a buried electrical cable main within 100 ft of Property boundary? Is a storm water pipe within 100 ft of the Property boundary? * If yes, please provide a map or detailed information (distance, direction, depth) of the utility in correlation with the subject property. Is there a basement within 1,000 ft of the Property Distance (ft)Address Zoning/Land Use Proposed Usage Current Use/Occupant Is a school or daycare center within 1,000 ft of the Property? Is a water line main within 100 ft of Property boundary? Is a natural gas line main within 100 ft of the Property boundary? Is a buried telephone/ cable main within 100 ft of the Property boundary? Is a septic system leach field within 500 ft of the Property boundary? Direction Rev. 09/2015 Page 2 of 3 North Carolina Department of Environmental Quality Division of Waste Management Brownfields Program Water Supply What is the potable water supply for the property? Public Private ______ Surface Water & Wetlands b. List the uses of the water body. c. What is the source of the water for the water body? d. What is the nature of the bottom of the water body (e.g., rocky or concrete bottom, drainage ways or impoundments) If no on-site surface water features, what is the nearest surface water body? Are there any wetlands present on the property? If no wetlands on-site, are wetlands suspected on adjoining properties? a. Is the water body naturally developed or man-made? Is a public water supply well within 1 mile of the Property boundary? Is a private water supply well within 1,500 ft of the Property boundary? Is an irrigation well within 1,500 ft of the Property boundary? Response/Comments The purpose of this section is to provide information on the presence of surface waters and/or wetlands on, or in the vicinity of the Property. Are there surface water features on the property? (If yes, please complete a. to d.) If Private, please provide details of the water supply source (i.e. well location, well construction, etc). If public, please include the water providers name. Distance (ft)Direction Provide Information regarding Surface Water and Wetlands Y/NWater Supply Wells Please provide the following information regarding water supply wells in the vicinity of the Property. At a minimum, a windshield survey within 1,500 ft of the property boundaries should be completed to determine if water supply or irrigation wells may be present. Information from applicable databases can and should be utilized; however, should not be utilized in lieu of the windshield survey. If multiple wells are present within the requested radius, please provide a map of the well locations. If needed, please attach a separate table to list all wells. Please note, the PM may opt for a more extensive water supply well survey if needed. The purpose of this section is to provide information on the water supply for the site and surrounding areas. Address Rev. 09/2015 Page 3 of 3 Appendix B Preliminary Cut/Fill Analysis Job: 8243_AGTEK Units: Ft-CY Thu Feb 07, 2019 14:09:16 Page 1 Volume Report Subgrade vs. Stripped Area Volume Comp/Ratio Compact Export Change Total Cut Fill OnGrade Cut Fill Cut Fill Cut Fill -Import Per .1 Ft -BUILDING 36,292 30,820 2,990 2,482 2,049 46 1.00 1.15 2,049 53 1,996 155 -BUILDING 13,992 143 13,642 207 1 696 1.00 1.15 1 800 -799 60 -CENTER WALKWAY 5,699 763 2,771 2,165 11 38 1.00 1.15 11 44 -33 24 -DRIVEWAY 1,596 1,596 0 0 40 0 1.00 1.15 40 0 40 7 -DRIVEWAY 492 492 0 0 14 0 1.00 1.15 14 0 14 2 -HARDSCAPE 512 203 0 309 2 0 1.00 1.15 2 0 2 2 -HARDSCAPE 199 198 0 1 5 0 1.00 1.15 5 0 5 1 -HARDSCAPE 614 0 270 344 0 2 1.00 1.15 0 2 -2 3 -HARDSCAPE 302 74 163 65 1 2 1.00 1.15 1 2 -1 1 -HARDSCAPE 11,657 3,371 6,645 1,641 50 265 1.00 1.15 50 305 -255 50 -HARDSCAPE 7,548 3,873 739 2,936 66 8 1.00 1.15 66 9 57 32 Regions Total 78,903 41,533 27,220 10,150 2,239 1,057 2,239 1,215 1,024 337 Unspecified 18,155 396 16,222 1,537 12 348 1.00 1.15 12 400 -388 77 Job Total 97,058 41,929 43,442 11,687 2,251 1,405 2,251 1,615 636 414 Plane Slope Stripping Qtys Area Area Depth Volume STRIPPING 97,058 97,120 0.500 1,799 Plane Slope Sectional Qtys Area Area Depth Volume -BUILDING 36,292 36,326 0.833 1,121 -BUILDING 13,992 13,995 0.833 432 -CENTER WALKWAY 5,699 5,699 0.500 106 -DRIVEWAY 1,596 1,598 1.000 59 -DRIVEWAY 492 493 1.000 18 -HARDSCAPE 199 200 0.500 4 -HARDSCAPE 7,548 7,576 0.500 140 -HARDSCAPE 11,657 11,717 0.500 217 -HARDSCAPE 302 302 0.500 6 -HARDSCAPE 614 658 0.500 12 -HARDSCAPE 512 512 0.500 9 Sectional Total 78,903 79,076 2,124