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Home My WebLink About23018_Corey Transmission - Environmental Management Plan (EMP) - Fully Executed_03-10-20201 EMP Version 2, June 2018 NORTH CAROLINA BROWNFIELDS PROGRAM ENVIRONMENTAL MANAGEMENT PLAN This form is to be used to prepare an Environmental Management Plan (EMP) for projects in the North Carolina Brownfields Program at the direction of a Brownfields project manager. The EMP is a typical requirement of a Brownfields Agreement (BFA). Its purpose is to clarify actions to be taken during the demolition and construction at Brownfields properties in an effort to avoid delays in the event of the discovery of new contamination sources or other environmental conditions. The EMP provides a means to document redevelopment plans and environmental data for each applicable environmental medium to inform regulatory-compliant decision-making at the site. As much detail as possible should be included in the EMP, including contingency planning for unknowns. Consult your project manager if you have questions. Prospective Developers and/or their consultants must complete and submit this form and all pertinent attachments, see checklist below, to their Brownfields project manager prior to any earthmoving or other development-related activities that have the potential to disturb soil at the Brownfields Property, including demolition. For the resultant EMP to be valid for use, it must be completed, reviewed by the program, signed by all parties working on the project, and approved by the Brownfields project manager. Failure to comply with the requirements of the EMP could jeopardize project eligibility, or in the event of a completed agreement, be cause for a reopener So that the EMP provides value in protecting brownfields eligibility and public health, the preparer shall ensure that the following steps have been completed prior to submitting the EMP for review. Any EMP prepared without completing these steps is premature. ☒Site sampling and assessment that meets Brownfields’ objectives is complete and has been reviewed and approved by the Brownfields Project Manager. ☒Specific redevelopment plans, even if conceptual, have been developed for the project, submitted and reviewed by the Brownfields Project Manager. 2 EMP Version 2, June 2018 Please submit, along with the completed EMP form, the following attachments, as relevant and applicable to the proposed redevelopment: ☒ A set of redevelopment plans, including architectural/engineering plans, if available; if not conceptual plans may suffice if updated when detailed plans are drafted. ☒ A figure overlaying redevelopment plans on a map of the extent of contamination for each media. ☒ Site grading plans that include a cut and fill analysis. ☐ A figure showing the proposed location and depth of impacted soil that would remain on site after construction grading. ☐ Any necessary permits for redevelopment (i.e. demolition, etc.). ☐ A detailed construction schedule that includes timing and phases of construction. ☒ Tabulated data summaries for each impacted media (i.e. soil, groundwater, soil gas, etc.) applicable to the proposed redevelopment. ☒ Figures with the sampling locations and contamination extents for each impacted media applicable to the proposed redevelopment. ☐ A full final grade sampling and analysis plan, if the redevelopment plan is final. ☐ If known, information about each proposed potential borrow soil source, such as aerial photos, historic site maps, historic Sanborn maps, a site history, necessary for brownfields approval. ☐ Information and, analytical data if required, for quarries, or other borrow sources, detailing the type of material proposed for importation to the Brownfields Property. ☐ A work plan for the sampling and analysis of soil to be brought onto the Brownfields Property. Refer to Issue Resolution 15 in Brownfields Program Guidelines. ☐ A map of the Brownfields Property showing the location of soils proposed for export and sampling data from those areas. ☐ If a Vapor Mitigation System is required by the Brownfields Program, the Vapor Intrusion Mitigation System (VIMS) plan will be signed and sealed by a NC Professional Engineer. The VIMS Plan may also be submitted under separate cover. 3 EMP Version 2, June 2018 GENERAL INFORMATION Date: 3/9/2020 Revision Date (if applicable): Click or tap to enter a date. Brownfields Assigned Project Name: Corey Transmission Service Brownfields Project Number: 23018-19-060 Brownfields Property Address: 511 & 527 West Tremont Avenue, Charlotte, Mecklenburg County, North Carolina Brownfields Property Area (acres): 5.58 Is Brownfields Property Subject to RCRA Permit?.......................☐ Yes ☒ No If yes enter Permit No.: Click or tap here to enter text. Is Brownfields Property Subject to a Solid Waste Permit….……..☐ Yes ☒ No If yes, enter Permit No.: Click or tap here to enter text. COMMUNICATIONS A copy of this EMP shall be distributed to all the parties below as well as any contractors or site workers that may be exposed to site vapors, soil, groundwater, and/or surface water. Additionally, a copy of the EMP shall be maintained at the Brownfields Property during redevelopment activities. NOTE, THE EMP DOES NOT TAKE THE PLACE OF A SITE-SPECIFIC HEALTH AND SAFETY PLAN. Prospective Developer (PD): TAC Tremont,LLC Contact Person: Tyson Reilly Phone Numbers: Office: (803) 548-4656 Mobile: 248-361-8842 Email: treilly@theardentcompanies.com Contractor for PD: Altura Development Group, LTD Contact Person: Mr. Chris Granelli Phone Numbers: Office: Click or tap here to enter text. Mobile: 704-534-4898 Email: cmg@alturagroup.net Environmental Consultant: ECS Southeast, LLP Contact Person: Joseph Nester, P.G., P.E. Phone Numbers: Office: 704.525.5152 Mobile: 704-280-7422 Email: jnestor@ecslimited.com Brownfields Program Project Manager: Cody Cannon Phone Numbers: Office: 704-235-2168 Mobile: 704-798-0352 Email: cody.cannon@ncdenr.gov 4 EMP Version 2, June 2018 Other DEQ Program Contacts (if applicable, i.e., UST Section, Inactive Hazardous Site Branch, Hazardous Waste, Solid Waste): Click or tap here to enter text. NOTIFICATIONS TO THE BROWNFIELDS PROGRAM Written advance Notification Times to Brownfields Project Manager: Check each box to accept minimum advance notice periods (in calendar days) for each type of onsite task: On-site assessment or remedial activities:……………………………………….…… 10 days Prior ☒ Construction or grading start:……………………………………….………………………. 10 days Prior ☒ Discovery of stained soil, odors, USTs, buried drums or waste, landfill, or other signs of previously unknown contamination: ……………………………….……………………………………. Within 48 hours ☒ Implementation of emergency actions (e.g. dewatering, flood or soil erosion control measures in area of contamination, ventilation of work zones):…………….……….……… Within 48 hours ☒ Installation of mitigation systems:………………………….………………….……….. 10 days Prior ☒ Other notifications as required by local, state or federal agencies to implement redevelopment activities: (as applicable): ……………………….…………………………………………..… Within 30 days ☒ REDEVELOPMENT PLANS 1) Type of Redevelopment (check all that apply): ☒Residential ☐Recreational ☐Institutional ☐Commercial ☐Office ☐Retail ☐Industrial ☐Other specify: The current site redevelopment plans include the construction of approximately 100 townhome units, including small private yards and shared open space consistent with the approved zoning of the property. 2) Check the following activities that will be conducted prior to commencing earth-moving activities at the site: ☒ Review of historic maps (Sanborn Maps, facility maps) ☐ Conducting geophysical surveys to evaluate the location of suspect UST, fuel lines, utility lines, etc. ☐ Interviews with employees/former employees/facility managers/neighbors 3) Summary of Redevelopment Plans (MANDATORY: attach detailed plans or conceptual plans, if detailed plans are not available. EMP review without such information would be premature): 5 EMP Version 2, June 2018 Provide brief summary of redevelopment plans, including demolition, removal of building slabs/pavement, grading plans and planned construction of new structures: A CD of complete re-development plans will be provided to North Carolina Brownfields Program. In addition, these plans may be downloaded from the following link: Download all associated files Appendix A includes pertinent excerpts from the complete plans including an ALTA/ASCM Land Title Survey (Pre-redevelopment), C2-00 Existing Condition & Demolition Plan, C3-00 – Site Plan, and C4-00 – Grading Plan. In addition, a cut and fill analysis is included in Appendix A. Construction activities are scheduled to begin in April 2020 and occupancy is expected by September 2020. 4) Do plans include demolition of structure(s)?: ☒ Yes ☐ No ☐ Unknown ☒ If yes, please check here to confirm that demolition will be conducted in accordance with applicable legal requirements, including without limitation those related to lead and asbestos abatement that are administered by the Health Hazards Control Unit within the Division of Public Health of the North Carolina Department of Health and Human Services. If available, please provide a copy of your demolition permit. 5) Are sediment and erosion control measures required by federal, state, or local regulations? ☒ Yes ☐ No ☐ Unknown ☒ If yes, please check here to confirm that demolition will be conducted in accordance with applicable legal requirements. If soil disturbance is necessary to install sediment and erosion control measures, they may not begin until this EMP is approved. 6) Which category of risk-based screening level is used or is anticipated to be specified in the Brownfields Agreement? Note: If children frequent the property, residential screening levels shall be cited in the Brownfields Agreement for comparison purposes. ☒ Residential ☐ Non-Residential or Industrial/Commercial 7) Schedule for Redevelopment (attach construction schedule): a) Construction start date: 4/1/2020 b) Anticipated duration (specify activities during each phase): Anticipated 4 months of construction. c) Additional phases planned? ☐ Yes ☐ No If yes, specify the start date and/or activities if known: Start Date: Additional phases are not planned Planned Activity: Not Applicable 6 EMP Version 2, June 2018 Start Date: Additional phases are not planned Planned Activity: Not Applicable Start Date: Additional phases are not planned Planned Activity: Not Applicable d) Provide the planned date of occupancy for new buildings: Occupancy of units is expected to start 4th quarter of 2020 and complete occupancy anticipated by end of 2021. CONTAMINATED MEDIA 1) Contaminated Media on the Brownfields Property Part 1. Soil:……………………………………….……………. ☒ Yes ☐ No ☐ Suspected Part 2. Groundwater:.……………………….……..……. ☒ Yes ☐ No ☐ Suspected Part 3. Surface Water:.……………...……..…………… ☐ Yes ☒ No ☐ Suspected Part 4. Sediment:.……………...……..…………………… ☐ Yes ☒ No ☐ Suspected Part 5. Soil Vapor:…..…………...……..…………………. ☒ Yes ☐ No ☐ Suspected Part 6. Sub-Slab Soil Vapor:……...……..…………….. ☐ Yes ☐ No ☒ Suspected Part 7. Indoor Air:...……..…………………………………. ☐ Yes ☒ No ☐ Suspected 2) For the Area of Proposed Redevelopment on the Brownfields Property, attach tabulated data summaries for each impacted media and figure(s) with sample locations. PART 1. Soil – Please fill out the information below, using detailed site plans, if available, or estimate using known areas of contaminated soil and a conceptual redevelopment plan. Provide a figure overlaying new construction onto figure showing contaminated soil and groundwater locations. 1) Known or suspected contaminants in soil (list general groups of contaminants): Appendix B includes figures from previous environmental assessment reports which show the locations of sampling points of various environmental media superimposed over aerial photographs of how the site appeared at the time of sampling. Appendix C includes figures showing the locations of sampling points of various environmental media superimposed over the site plan. Appendix D includes tables from previous environmental assessment reports which summarize analytical results for samples taken from the sampling points. Soil samples were analyzed for VOCs, SVOCs, RCRA metals, and hexavalent chromium. VOCs The VOC, acetone, was detected in three soil samples and a duplicate sample at estimated concentrations (i.e., J-flagged) ranging from 0.0177 to 0.0727 mg/Kg and were below PSRGs. 7 EMP Version 2, June 2018 Benzene was detected in one soil sample at an estimated concentration (i.e., J-flagged) of 0.0013 mg/Kg and was below PSRGs SVOCs SVOCs were detected in several composite soil samples collected on August 19, 2019 and August 20, 2019. ECS compared detected concentrations for SVOCs to preliminary soil remediation goals (PSRGs) for residential or industrial/commercial exposure scenarios and the leaching from soil to groundwater exposure scenario. Several SVOCs were detected in composite soil samples at concentrations below their respective PSRGs, with the exception of benzo(a)pyrene. Benzo(a)pyrene was detected at a concentration of 0.322 mg/Kg, which exceeds the residential PSRG (0.11 mg/Kg) and the groundwater PSRG (0.12mg/Kg), however, the detected concentration is below the industrial/commercial PSRG (2.1 mg/Kg). Metals RCRA metals were detected in each of the five composite soil samples. With the exception of total chromium, none of the detected concentrations of RCRA metals exceeded industrial/commercial PSRGs. The detected concentrations of total chromium ranged from 17.7 mg/Kg for sample DUP-2 to 104 mg/Kg. The concentrations of total chromium exceeded the industrial/commercial PSRG for total chromium (6.5 mg/Kg). Hexavalent chromium was detected at estimated concentrations of 0.509 mg/Kg and 0.316 mg/Kg in two samples and exceeded the residential PSRG but not industrial/commercial PSRG or groundwater PSRG. These results were J-flagged by the laboratory indicating that the estimated concentration was above the adjusted method detection limit and below the adjusted reporting limit. Hexavalent chromium was not detected in the remaining three soil samples or the duplicate sample. The calculated concentrations of trivalent chromium for the soil samples collected in August 2019 did not exceed PSRGs. ECS calculated the concentration of trivalent chromium in soil samples by subtracting the detected concentration of hexavalent chromium from the detected concentration of total chromium. In cases in which hexavalent chromium was reported as not detected by laboratory, ECS assumed the concentration of hexavalent chromium was at the laboratory method detection limit (MDL) and subtracted this value from the concentration for total chromium. Arsenic was detected in soil samples at 1.0 and 1.5 mg/Kg concentrations, exceeding the residential use PSRG (0.68 mg/Kg), but below the industrial/commercial PSRG (3.0 mg/Kg) and protection of groundwater PSRG (5.8 mg/Kg). The concentrations of arsenic in soil are consistent with expected concentrations of naturally occurring arsenic in this region and is not necessarily indicative of a release of hazardous substances. . 2) Depth of known or suspected contaminants (feet): Soil samples were collected from 0 to 2 feet below surface. 8 EMP Version 2, June 2018 3) Area of soil disturbed by redevelopment (square feet): Approximately 246,691 4) Depths of soil to be excavated (feet): Maximum depth of materials to be excavated estimated at 7 feet 5) Estimated volume of soil (cubic yards) to be excavated (attach grading plan): 11,630 cubic yards cubic yards (See attached Grading Plan and Cut & Fill analysis in Appendix A) 6) Estimated volume of excavated soil (cubic yards) anticipated to be impacted by contaminants: 11,630 cubic yards cubic yards 7) Estimated volume of contaminated soil expected to be disposed of offsite, if applicable: 11,630 cubic yards Part 1.A. MANAGING ONSITE SOIL If soil is anticipated to be excavated from the Brownfield Property, relocated on the Brownfields Property, or otherwise disturbed during site grading or other redevelopment activities, please provide a grading plan that clearly illustrates areas of cut and fill (approximate areas & volumes are acceptable, if only preliminary data available). 1) HAZARDOUS WASTE DETERMINATION: a) Does the soil contain a LISTED WASTE as defined in the North Carolina Hazardous Waste Section under 40 CFR Part 261.31-261.35?....................................... ☐Yes ☒No ☐ If yes, explain why below, including the level of knowledge regarding processes generating the waste (include pertinent analytical results as needed). Click or tap here to enter text. ☐ If yes, do the soils exceed the “Contained-Out” levels in Attachment 1 of the North Carolina Contained-In Policy?................................................. ☐ Yes ☐ No b) NOTE: IF SOIL MEETS THE DEFINITION OF A LISTED HAZARDOUS WASTE AND EXCEEDS THE CONTAINED-OUT LEVELS IN ATTACHMENT 1 TO THE NORTH CAROLINA CONTAINED-IN POLICY THE SOIL MAY NOT BE RE-USED ON SITE AND MUST BE DISPOSED OF IN ACCORDANCE WITH DEQ HAZARDOUS WASTE SECTION RULES AND REGULATIONS. c) Does the soil contain a CHARACTERISTIC WASTE?.................................... ☐ Yes ☒ No ☐ If yes, mark reason(s) why below (and include pertinent analytical results). ☐ Ignitability Click or tap here to enter text. ☐ Corrosivity Click or tap here to enter text. ☐ Reactivity Click or tap here to enter text. 9 EMP Version 2, June 2018 ☐ Toxicity Click or tap here to enter text. ☐ TCLP results Click or tap here to enter text. ☐ Rule of 20 results (20 times total analytical results for an individual hazardous constituent on TCLP list cannot, by test method, exceed regulatory TCLP standard) Click or tap here to enter text. ☒ If no, explain rationale: Rule of 20 Results for VOCS, SVOCS, and metal; and professional judgment for ignitability, corrosivity, reactivity, and toxicity. d) NOTE: IF SOIL MEETS THE DEFINITION OF A CHARACTERISTIC HAZARDOUS WASTE, THE SOIL MAY NOT BE RE-USED ON SITE AND MUST BE DISPOSED OF IN ACCORDANCE WITH DEQ HAZARDOUS WASTE SECTION RULES AND REGULATIONS. 2) Screening criteria by which soil disposition decisions will be made (e.g., left in place, capped in place with low permeability barrier, removed to onsite location and capped, removed offsite): ☒ Preliminary Health-Based Residential SRGs ☐ Preliminary Health-Based Industrial/Commercial SRGs ☒ Division of Waste Management Risk Calculator (For Brownfields Properties Only) ☐ Site-specific risk-based cleanup level. Please provide details of methods used for determination/explanation. Click or tap here to enter text. Additional comments: If field observations suggest contamination which was not previously noted, samples will be collected and analyzed and screening criteria will be applied. 3) If known impacted soil is proposed to be reused within the Brownfields Property Boundary, please check the measures that will be utilized to ensure safe placement and documentation of same. Please attach a proposed location diagram/site map. ☒ Provide documentation of analytical report(s) to Brownfields Project Manager ☒ Provide documentation of final location, thickness and depth of relocated soil on site map to Brownfields Project Manager once known ☐ Geotextile to mark depth of fill material. Provide description of material: Click or tap here to enter text. ☒ Manage soil under impervious cap ☐ or clean fill ☒ ☒ Describe cap or fill: 10 EMP Version 2, June 2018 Hardscaping or 2 feet of clean fill will be placed over areas of known surficial soil contamination. ☒ Confer with NC BF Project Manager if Brownfield Plat must be revised (or re-recorded if actions are Post-Recordation). ☒ GPS the location and provide site map with final location. ☐ Other. Please provide a description of the measure: 4) Please describe the following action(s) to be taken during and following excavation and management of site soils: Management of fugitive dust from site ☒ Yes, describe the method will include: Typical construction measures involving a water truck will be used as necessary to address visible dust. ☐ No, explain rationale: Click or tap here to enter text. Field Screening of site soil ☒ Yes, describe the field screening method, frequency of field screening, person conducting field screening: Soil will be monitored via human sensory observations, including visual observations for staining, debris, or indications of fill and olfactory observations for unusual odors. These observations can be augmented by a photoionization detector (PID) to evaluate VOC presence as needed during soil excavation activities at the site. The contractor will be instructed to contact ECS should field observations suggest the presence of impacts. Field instrument screening of excavated soils will occur on an as-needed basis while excavation is occurring and use of field instrumentation will be used more frequently in areas of suspected impact. ECS will also conduct periodic site visits during site grading activities to observe and document site conditions. ☐ No, explain rationale: Click or tap here to enter text. Soil Sample Collection ☒ Yes, describe the sampling method (e.g., in-situ grab, composite, stockpile, etc.): If human sensory observations or PID field screening suggest impacts grab samples will be collected for characterization purposes. ☐ No, explain rationale: Click or tap here to enter text. Click or tap here to enter text. 11 EMP Version 2, June 2018 If soil samples are collected for analysis, please check the applicable chemical analytes: ☒ Volatile organic compounds (VOCs) by EPA Method 8260 ☒ Semi-volatile organic compounds (SVOCs) by EPA Method 8270 ☒ Metals RCRA List (8) (arsenic, barium, cadmium, chromium, mercury, lead, selenium and silver): Specify Analytical Method Number(s): EPA Method 6010 for silver EPA Method 6020 for arsenic, barium, cadmium, chromium, lead, and selenium EPA Method 7471 for Mercury ☐ Pesticides: Specify Analytical Method Number(s): Click or tap here to enter text. ☐ PCBs: Specify Analytical Method Number(s): Click or tap here to enter text. ☒ Other Constituents & Respective Analytical Method(s) (i.e. Hexavalent Chromium, Herbicides, etc.): Specify Analytical Method Number(s): Hexavalent chromium by EPA Method 7199 ☒ Check to confirm that stockpiling of known or suspected impacted soils will be conducted in accordance with Figure 1 of this EMP. Stockpile methodology should provide erosion control, prohibiting contact between surface water/precipitation and contaminated soil, and preventing contaminated runoff. Explain any variances or provide additional details as needed: ☒ Final grade sampling of exposed native soil (i.e., soil that will not be under buildings or permanent hardscape). Select chemical analyses for final grade samples with check boxes below (Check all that apply): ☒ Volatile organic compounds (VOCs) by EPA Method 8260 ☒ Semi-volatile organic compounds (SVOCs) by EPA Method 8270 ☒ Metals RCRA List (8) (arsenic, barium, cadmium, chromium, mercury, lead, selenium and silver): Specify Analytical Method Number(s): Silver by EPA Method 6010; arsenic, barium, cadmium, chromium lead, & selenium by 6020 EPA Method; and mercury by EPA Method 7471 ☐ Pesticides: Specify Analytical Method Number(s): Click or tap here to enter text. ☐ PCBs: Specify Analytical Method Number(s): Click or tap here to enter text. ☒ Other Constituents & Respective Analytical Method(s) (i.e. Hexavalent Chromium, Herbicides, etc.): Click or tap here to enter text. 12 EMP Version 2, June 2018 Hexavalent chromium by EPA Method 7199 Please provide a scope of work for final grade sampling, including a diagram of soil sampling locations, number of samples to be collected, and brief sampling methodology. Samples should be collected from 0-2 ft below ground surface, with the exception of VOCs which should be taken from 1-2 ft below ground surface. Alternatively, a work plan for final grade sampling may be submitted under separate cover. It is expected that the approximately 60 to 70 percent of the site will be covered by buildings or hardscaping. Areas which are not buildings or hardscaping and are not covered by a minimum of 2 feet of documented clean fill will be sampled. A separate work plan will be prepared to address these area. ☐ If final grade sampling was NOT selected please explain rationale: Click or tap here to enter text. Part 1.B. IMPORTED FILL SOIL NO SOIL MAY BE BROUGHT ONTO THE BROWNFIELDS PROPERTY WITHOUT PRIOR APPROVAL FROM THE BROWNFIELDS PROGRAM. According to the Brownfields IR 15, “Documenting imported soil (by sampling, analysis, and reporting in accordance with review and written approval in advance by the Brownfields Program), will safeguard the liability protections provided by the brownfields agreement and is in the best interest of the prospective developer/property owner.” Requirements for importing fill: 1) Will fill soil be imported to the site?................................................ ☒ Yes ☐ No ☐ Unknown 2) If yes, what is the estimated volume of fill soil to be imported? 2500 cubic yards 3) If yes, what is the anticipated depth that fill soil will be placed at the property? (If a range of depths, please list the range.) 0 to 7 feet 4) Provide the source of fill, including: location, site history, nearby environmental concerns, etc. Attach aerial photos, maps, historic Sanborn maps and a borrow source site history: Soils imported to the site will be pre-approved by the NCBP Project Manager. We anticipate the soils coming from Martin Marietta Quarry on Beatties Ford Road. 5) PRIOR TO ITS PLACEMENT AT THE BROWNFIELDS PROPERTY, provide a plan to analyze fill soil to demonstrate that it meets acceptable standards applicable to the site and can be approved for use at the Brownfields property. Unless the imported soil comes from a source which has been pre-approved by the NCBP, 13 EMP Version 2, June 2018 Composite samples will be collected from each 1,000 cubic yards and analyzed for SVOCs, RCRA Metals, and hexavalent chromium as described below. A single grab sample will be collected for each 1,000 cubic yards and will be analyzed for VOCs as described below: 6) Please check the applicable chemical analytes for fill soil samples. (Check all that apply): ☒ Volatile organic compounds (VOCs) by EPA Method 8260 ☒ Semi-volatile organic compounds (SVOCs) by EPA Method 8270 ☒ Metals RCRA List (8) (arsenic, barium, cadmium, chromium, mercury, lead, selenium and silver): Specify Analytical Method Number(s): Silver by EPA Method 6010; arsenic, barium, cadmium, chromium lead, & selenium by 6020 EPA Method; and mercury by EPA Method 7471 ☐ Pesticides: Specify Analytical Method Number(s): Click or tap here to enter text. ☐ PCBs: Specify Analytical Method Number(s): Click or tap here to enter text. ☒ Other Constituents & Respective Analytical Method(s) (i.e. Hexavalent Chromium, Herbicides, etc.): Hexavalent chromium by EPA Method 7199 7) The scope of work for import fill sampling may be provided below or in a Work Plan submitted separately for DEQ review and approval. Attach specific location maps for in-situ borrow sites. If using a quarry, provide information on the type of material to be brought onto the Brownfields Property. If imported fill is needed, it will be obtained from Martin Marietta Quarry of Beatties Ford Road in Charlotte, or another source which has been pre-approved by the Brownfields Program. The Brownfields Program will be notified before fill is imported to the site. Part 1.C. EXPORTED SOIL NO SOIL MAY LEAVE THE BROWNFIELDS PROPERTY WITHOUT APPROVAL FROM THE BROWNFIELDS PROGRAM. FAILURE TO OBTAIN APPROVAL MAY VIOLATE A BROWNFIELDS AGREEMENT CAUSING A REOPENER OR JEOPARDIZING ELIGIBILITY IN THE PROGRAM, ENDANGERING LIABILITY PROTECTIONS AND MAKING SAID ACTION POSSIBLY SUBJECT TO ENFORCEMENT. JUSTIFICATIONS PROVIDED BELOW MUST BE APPROVED BY THE PROGRAM IN WRITING PRIOR TO COMPLETING TRANSPORT ACTIVITIES. Please refer to Brownfields IR 15 for additional details. 1) If export from a Brownfields Property is anticipated, please provide details regarding the proposed export actions. Volume of exported soil, depths, location from which soil will be excavated on site, related sampling results, etc. Provide a site map with locations of export and sampling results included. Excavated soil will be used to the extent reasonably possible on the site. However, some of this 14 EMP Version 2, June 2018 excavated soil may not be suitable for reuse due to geotechnical properties and will be exported form the site. Approximately 11,630 cubic yards of soil are expected to be exported. It is anticipated that exported soil will be transported to a Subtitle D Landfill or another Brownfields Site (with approval of the Brownfields Program). If soil is taken to Subtitle D Landfill samples will be collected and analyzed per the requirement of that landfill. If soil is taken to another Brownfields Site, samples will be collected and analyzed per the requirement of the Brownfields Program. The locations where exported soil will be transported is to be determined at a later time and the NCBP will be notified in advance. If soil is to be exported to another Brownfields site, samples will be collected to characterize the exported soil. These samples will be collected either from stockpiles of soils to exported or situ and in either case, samples will be collected to represent each 1,000 cubic yards of soil to be exported. Sampling will be performed at a frequency of 1 composite sample for SVOCs and RCRA metals (comprised of 3-5 grab samples) per 1,000 cubic yards of material. One grab sample per composite should be selected based on field observations/PID screening for VOC analysis. A work plan will be submitted to NCBP for each such sampling event. 2) To what type of facility will the export Brownfields soil be sent? ☒ Subtitle D/Municipal Solid Waste Landfill (analytical program to be determined by landfill) ☐ Permitted but Unlined Landfill (i.e. LCID, C&D, etc.) Analytical program to be determined by the accepting Landfill; ☐ Landfarm or other treatment facility ☒ Use as fill at another suitable Brownfields Property – determination that a site is suitable will require, at a minimum, that similar concentrations of the same or similar contaminants already exist at both sites, use of impacted soil will not increase the potential for risk to human health and the environment at the receiving Brownfields property, and that a record of the acceptance of such soil from the property owner of the receiving site is provided to Brownfields. Please provide additional details below. ☐ Use as Beneficial Fill off-site at a non-Brownfields Property - Please provide documentation of approval from the property owner for receipt of fill material. This will also require approval by the DEQ Solid Waste Section. Additional information is provided in IR 15. Please provide additional details below. 3) Additional Details: (if transfer of soil to another property is requested above, please provide details related to the proposed plans). It is anticipated that exported soil will be transported to a Subtitle D Landfill or another Brownfields Site (with approval of the Brownfields Program). Part 1.D. MANAGEMENT OF UTILITY TRENCHES ☐ Install liner between native impacted soils and base of utility trench before filling with clean fill 15 EMP Version 2, June 2018 (Preferred) ☒ Last out, first in principle for impacted soils (if soil can safely be reused onsite and is not a hazardous waste), i.e., impacted soils are placed back at approximately the depths they were removed from such that impacted soil is not placed at a greater depth than the original depth from which it was excavated. ☐ Evaluate whether necessary to install barriers in conduits to prevent soil vapor transport, and/or degradation of conduit materials due to direct impact with contaminants? ☐ If yes, provide specifications on barrier materials: Click or tap here to enter text. ☐ If no, include rationale here: Click or tap here to enter text. Other comments regarding managing impacted soil in utility trenches: Click or tap here to enter text. PART 2. GROUNDWATER – Please fill out the information below. 1) What is the depth to groundwater at the Brownfields Property? Approximately 5 feet bgs in northern portions of site to approximately 20 feet bgs in the southern portions of the site. 2) Is groundwater known to be contaminated by ☐onsite ☐offsite ☐both or ☒unknown sources? Describe source(s): There is evidence of chlorinated- and petroleum related compounds in groundwater in samples collected at onsite samples points and at offsite sample points including upgradient offsite sample points. It is not completely clear if groundwater contamination on the subject Brownfields site originated from offsite sources, onsite sources, or both based upon available data. 3) What is the direction of groundwater flow at the Brownfields Property? Northwesterly 4) Will groundwater likely be encountered during planned redevelopment activities? ☐Yes ☒No If yes, describe these activities: Click or tap here to enter text. Regardless of the answer; in the event that contaminated groundwater is encountered during redevelopment activities (even if no is checked above), list activities for contingent management of groundwater (e.g., dewatering of groundwater from excavations or foundations, containerizing, offsite disposal, discharge to sanitary sewer, NPDES permit, or sampling procedures). 16 EMP Version 2, June 2018 In the event that groundwater is encountered, it would likely be limited to relatively small quantities and deep utilities. If encountered, water would be displaced in the excavation and/or pumped into a tanker truck, frac tank or other container approved by the ECS. Sampling and analysis would be conducted as needed to characterize the water for disposal purposes based on the requirements of the disposal facility 5) Are monitoring wells currently present on the Brownfields Property?.................☒Yes ☐No If yes, are any monitoring wells routinely monitored through DEQ or other agencies?..................................................................................................................☐Yes ☒No 6) Please check methods to be utilized in the management of known and previously unidentified wells. ☒ Abandonment of site monitoring wells in accordance with all applicable regulations. It is the Brownfields Program’s intent to allow proper abandonment of well(s) as specified in the Brownfields Agreement, except if required for active monitoring through another section of DEQ or the EPA. ☐ Location of existing monitoring wells marked ☐ Existing monitoring wells protected from disturbance ☐ Newly identified monitoring wells will be marked and protected from further disturbance until notification to DEQ Brownfields can be made and approval for abandonment is given. 7) Please provide additional details as needed: Please note, disturbance of existing site monitoring wells without approval by DEQ is not permissible. If monitoring wells are damaged and/or destroyed, DEQ may require that the PD be responsible for replacement of the well. PART 3. SURFACE WATER -Please fill out the information below. 1) Is surface water present at the property? ☐ Yes ☒ No 2) Attach a map showing the location of surface water at the Brownfields Property. 3) Is surface water at the property known to be contaminated? ☐ Yes ☒ No 4) Will workers or the public be in contact with surface water during planned redevelopment activities? ☐ Yes ☒ No 5) In the event that contaminated surface water is encountered during redevelopment activities, or clean surface water enters open excavations, list activities for management of such events (e.g. flooding, contaminated surface water run-off, stormwater impacts): In the event that contaminated surface water is encountered during redevelopment activities, or clean surface water enters open excavations, it will be allowed to infiltrate into the ground Monitoring wells will be abandoned before grading operations begin. 17 EMP Version 2, June 2018 and/or containerized and managed in accordance with local, state, and federal regulations. PART 4. SEDIMENT – Please fill out the information below. 1) Are sediment sources present on the property? ☐ Yes ☒ No 2) If yes, is sediment at the property known to be contaminated: ☐ Yes ☒ No 3) Will workers or the public be in contact with sediment during planned redevelopment activities? ☐ Yes ☒ No 4) Attach a map showing location of known contaminated sediment at the property. 5) In the event that contaminated sediment is encountered during redevelopment activities, list activities for management of such events (stream bed disturbance): Not Applicable PART 5. SOIL VAPOR – Please fill out the information below. 1) Do concentrations of volatile organic compounds at the Brownfields property exceed the following vapor intrusion screening levels (current version) in the following media: IHSB Residential Screening Levels: Soil Vapor:………..☒ Yes ☐ No ☐ Unknown Groundwater:.….☐ Yes ☒ No ☐ Unknown IHSB Industrial/Commercial Screening Levels: Soil Vapor:………..☒ Yes ☐ No ☐ Unknown Groundwater:…..☒ Yes ☐ No ☐ Unknown 2) Attach a map showing the locations of soil vapor contaminants that exceed site screening levels. 3) If applicable, at what depth(s) is soil vapor known to be contaminated? 4) Will workers encounter contaminated soil vapor during planned redevelopment activities? ☐ Yes ☐ No ☒ Unknown 5) In the event that contaminated soil vapor is encountered during redevelopment activities (trenches, manways, basements or other subsurface work,) list activities for management of such contact: The contractor will be instructed that before workers may enter enclosed subsurface areas where vapors may accumulate, ECS needs to be contacted to perform an evaluation of such 5 feet 18 EMP Version 2, June 2018 areas. ECS will utilize a PID or similar instrument to evaluate the presence/absence of such vapors and relative concentrations if present. If an evaluation of such an area occurs in the northwestern portion of the site near soil gas sample point SG-7, ECS will collect a gas sample using sorbent tubes for mercury vapor analysis. Workers will not be permitted in these areas until vapor concentrations are determined to be below appropriate risk levels or engineering controls are in place (e.g., fans to reduce vapor concentrations). PART 6. SUB-SLAB SOIL VAPOR – Please fill out the information below if existing buildings or foundations will be retained in the redevelopment. 1) Are sub-slab soil vapor data available for the Brownfields Property? ☐ Yes ☒ No ☐ Unknown 2) If data indicate that sub-slab soil vapor concentrations exceed screening levels, attach a map showing the location of these exceedances. 3) At what depth(s) is sub-slab soil vapor known to be contaminated? ☐0-6 inches ☐Other, please describe: Not Applicable 4) Will workers encounter contaminated sub-slab soil vapor during planned redevelopment activities? ☐ Yes ☐ No ☒ Unknown 5) In the event that contaminated soil vapor is encountered during redevelopment activities, list activities for management of such contact The contractor will be instructed that when existing building slabs are removed, ECS needs to be contacted to perform an evaluation of such areas. ECS will utilize a PID or similar instrument to evaluate the presence/absence of such vapors and relative concentration, if present. Workers will not be permitted in these areas until vapor concentrations are determined to be below appropriate risk levels or engineering controls are in place (e.g., fans to reduce vapor concentrations). PART 7. INDOOR AIR – Please fill out the information below. 1) Are indoor air data available for the Brownfields Property? ☐ Yes ☒ No ☐ Unknown 2) Attach a map showing the location(s) where indoor air contaminants exceed site screening levels. 3) If the structures where indoor air has been documented to exceed risk-based screening levels will not be demolished as part of redevelopment activities, will workers encounter contaminated indoor air during planned redevelopment activities? ☐ Yes ☐ No ☐ Unknown 4) In the event that contaminated indoor air is encountered during redevelopment activities, list activities for management of such contact: Existing buildings will be demolished and this item is not applicable. 19 EMP Version 2, June 2018 VAPOR INTRUSION MITIGATION SYSTEM – Please fill out the information below. Is a vapor intrusion mitigation system (VIMS) proposed for this Brownfields Property? ☒ Yes ☐ No ☐ Unknown If yes, ☐ VIMS Plan Attached or ☒ VIMS Plan to be submitted separately If submitted separately provide date: A VIMS plan is expected to be submitted in February 2020. VIMS Plan shall be signed and sealed by a NC Professional Engineer If no, please provide a brief rationale as to why no vapor mitigation plan is warranted: Click or tap here to enter text. CONTINGENCY PLAN – encountering unknown tanks, drums, or other waste materials In this section please provide actions that will be taken to identify or manage unknown potential new sources of contamination. During redevelopment activities, it is not uncommon that unknown tanks, drums, fuel lines, landfills, or other waste materials are encountered. Notification to DEQ Brownfields Project Manager, UST Section, Fire Department, and/or other officials, as necessary and appropriate, is required when new potential source(s) of contamination are discovered. These Notification Requirements were outlined on Page 1 of this EMP. Should potentially impacted materials be identified that are inconsistent with known site impacts, the DEQ Brownfields Project Manager will be notified and a sampling plan will be prepared based on the EMP requirements and site-specific factors. Samples will generally be collected to document the location of the potential impacts. Check the following chemical analysis that are to be conducted on newly identified releases: ☒ Volatile organic compounds (VOCs) by EPA Method 8260 ☒ Semi-volatile organic compounds (SVOCs) by EPA Method 8270 ☒ Metals RCRA List (8) (arsenic, barium, cadmium, chromium, mercury, lead, selenium and silver) Silver by EPA Method 6010; arsenic, barium, cadmium, chromium, lead, & selenium by 6020 EPA Method; and mercury by EPA Method 7471 ☐ Pesticides: Specify Analytical Method Number(s): Click or tap here to enter text. 20 EMP Version 2, June 2018 ☐ PCBs: Specify Analytical Method Number(s): Click or tap here to enter text. ☒ Other Constituents & Analytical Method(s) (i.e. Hexavalent Chromium, Herbicides, etc.) Please note, if field observations indicate the need for additional analyses, they should be conducted, even if not listed here. Hexavalent chromium by EPA Method 7199 Please provide details on the proposed methods of managing the following commonly encountered issues during redevelopment of Brownfields Properties. Click or tap here to enter text. Underground Storage Tanks: If encountered, the contents of the UST will be evaluated, and based on the contents; the UST will be removed or closed in place. Brownfield Project Manager approval will be obtained before closing in place. If UST is removed, soil samples will be collected (one per 10 feet length of UST) from the base of the UST excavation and submitted for laboratory analysis of VOCs, SVOCS, and RCRA Metals Sub-Grade Feature/Pit: If encountered, the contents of the pit and the pit itself will be removed. Soil samples will be collected from the base of the pit excavation and submitted for laboratory analysis of VOCs, SVOCS, RCRA Metals, and hexavalent chromium. Buried Waste Material: If encountered, the waste will be removed, characterized, and disposed of off-site. Soil samples will be collected from the base and side-walls (one for every 10 feet of base/side-wall) of the excavated material and submitted for laboratory analysis of VOCs, SVOCs, RCRA Metals, and hexavalent chromium. Re-Use of Impacted Soils On-Site: If impacted soil is re-used on site, it will be covered with hardscaping or with a minimum of 2 feet of clean fill. If unknown, impacted soil is identified on-site, management on-site can be considered after the project team provides the necessary information, outlined in Part 1.A. Item 11, for Brownfields Project Manager approval prior to final placement on-site. If other potential contingency plans are pertinent, please provide other details or scenarios as needed below: Concrete produced during demolition which is unstained will be transported to a Construction and Debris landfill for disposal. Concrete produced during demolition which is stained will be transported to a Subtitle D landfill for disposal. 21 EMP Version 2, June 2018 POST-REDEVELOPMENT REPORTING ☒ Check this box to acknowledge that a Redevelopment Summary Report will be required for the project. If the project duration is longer than one year, an annual update is required and will be due by January 31 of each year, or 30 days after each one-year anniversary of the effective date of this EMP (as agreed upon with the Project Manager). These reports will be required for as long as physical redevelopment of the Brownfields Property continues, except that the final Redevelopment Summary Report will be submitted within 90 days after completion of redevelopment. Based on the estimated construction schedule, the first Redevelopment Summary Report is anticipated to be submitted on 1/31/2021 The Redevelopment Summary Report shall include environment-related activities since the last report, with a summary and drawings, that describes: 1. actions taken on the Brownfields Property; 2. soil grading and cut and fill actions; 3. methodology(ies) employed for field screening, sampling and laboratory analysis of environmental media; 4. stockpiling, containerizing, decontaminating, treating, handling, laboratory analysis and ultimate disposition of any soil, groundwater or other materials suspected or confirmed to be contaminated with regulated substances; and 5. removal of any contaminated soil, water or other contaminated materials (for example, concrete, demolition debris) from the Brownfields Property (copies of all legally required manifests shall be included). ☒ Check box to acknowledge consent to provide a NC licensed P.G. or P.E. sealed, Redevelopment Summary Report in compliance with the site’s Brownfields Agreement. 23 EMP Version 2, June 2018 APPENDIX A -0.0690.0750.001 0.639 0.626 0.270 0.108 5.622 7.097 6.6186.0826.6276.7922.245-1.770-1.630-1.341-1.308-0.6041.4242.309-0.373-0.0400.068 0.017 1.922 2.481 2.855 3.316 5.019 5.907 6.371 3.950 1.647 1.229 0.716 0.7902.3293.1184.0960.594-2.272-0.895-0.575-1.515-0.6710.6711.881-0.4280.427-0.001 -1.442 -1.447 -0.567 0.431 1.262 3.605 5.074 6.459 4.917 2.643 2.959 3.464 3.5984.1914.2735.2140.039-3.496-3.546-2.821-2.790-1.2760.7292.410-1.3440.419-0.001 -1.250 0.225 2.178 2.918 3.404 5.091 5.964 6.732 4.246 2.195 2.210 2.516 2.4403.1413.4283.986-1.031-3.974-4.219-3.793-3.754-2.278-0.4471.794-1.4110.2580.002 -0.849 0.807 2.358 2.836 3.113 4.480 5.258 5.879 3.334 1.769 2.213 2.061 2.0892.8022.9393.041-1.984-4.117-4.796-4.555-4.300-2.709-0.6401.705-2.472-0.2230.007 -0.354 -0.273 1.955 2.269 2.787 4.123 4.561 5.208 2.353 1.553 1.105 1.949 1.9982.6002.7512.851-2.091-3.307-5.253-5.279-4.671-3.066-1.4340.995-2.3910.2190.062-0.012 -0.151 -1.220 1.499 2.098 2.502 3.345 3.795 4.386 1.805 1.863 0.501 1.554 2.1032.2952.3551.829-2.318-2.660-4.851-4.752-5.064-4.085-3.085-1.617-0.7150.2500.0890.000 -0.285 0.034 1.456 1.773 1.874 2.523 2.426 2.109 2.113 2.086 2.294 2.660 2.584 1.5280.574-0.508-1.635-2.743-3.863-4.865-5.660-5.729-4.567-3.594-2.156-0.5800.0680.000 -0.899 -2.816 0.671 1.281 1.548 1.523 1.215 0.529 0.779 0.923 1.385 1.568 1.490 0.585-0.473-1.511-2.503-3.501-4.562-5.520-6.456-6.705-5.852-4.424-2.705-1.0880.0130.002 -1.464 -2.746 1.090 1.716 1.092 0.019 0.029 0.697 1.086 1.370 1.912 1.408 1.024 0.226-0.864-1.904-2.940-3.912-4.375-5.092-6.120-6.997-6.110-4.756-2.854-1.416-0.136-0.032 -2.279 -3.105 1.570 1.472 0.923 0.688 0.810 1.893 2.782 3.561 3.296 2.737 2.019 0.966-0.016-0.827-1.765-2.489-3.103-3.877-6.017-6.031-4.788-2.166-1.034-1.6620.094 -3.279 -0.271 0.551 1.252 1.466 2.161 1.914 3.007 5.157 5.331 3.500 3.247 2.636 0.4370.351-0.414-1.228-1.716-2.459-2.764-5.768-5.503-2.839-1.096-0.466-1.2510.045 -4.541 -0.272 0.273 0.507 2.610 3.429 2.988 3.454 5.546 3.644 3.337 2.446 2.085 0.6000.220-0.060-0.924-2.059-2.200-2.705-4.347-4.165-2.321-0.6210.126-0.689-0.371 -2.322 -2.978 -0.472 -0.372 1.072 2.903 3.720 2.050 1.167 3.509 3.365 2.344 2.135 1.501 0.6590.177-0.487-1.293-1.862-2.138-2.453-2.836-2.7763.990-0.648-0.021-0.7380.089-0.014 -1.137 -4.748 -1.020 -0.357 0.376 1.473 2.535 2.143 0.626 -0.216 2.752 2.444 2.000 1.615 1.180 0.8560.232-0.289-0.755-1.183-1.553-1.899-1.997-2.0060.6890.0550.692-0.125-0.331-0.121 -0.639 -2.810 -4.378 -1.074 0.201 0.826 0.999 0.488 0.178 -0.008 0.157 1.562 2.645 2.116 1.430 0.581 0.7821.1171.1900.692-0.386-1.356-1.510-1.668-1.493-1.188-1.012-0.694-0.627-0.174-0.117 0.392 -1.457 -4.196 -1.307 -0.427 -0.186 0.671 0.322 0.123 -0.113 0.298 0.098 0.112 2.365 2.355 1.568 0.596 0.5921.4281.1691.5880.606-0.680-1.129-1.426-2.522-2.966-3.065-2.017-0.848-0.363-0.140 1.837 -0.876 -2.034 -2.593 -0.171 0.767 0.392 0.529 1.033 -0.080 0.344 0.110 -0.195 0.408 1.435 1.991 1.613 0.984 0.8881.3302.0711.6940.355-0.869-1.493-1.960-2.525-3.521-3.605-2.858-1.107-0.649-0.013 3.175 0.390 -1.159 -4.118 -0.129 0.659 0.568 0.271 0.574 0.448 0.730 0.666 -0.090 0.179 1.020 1.132 1.746 1.590 1.042 1.2981.2991.6770.816-0.541-1.333-1.593-1.589-1.985-3.585-3.677-3.240-0.961-0.663-0.062 0.666 -1.925 -1.693 0.317 0.306 0.397 -0.116 0.232 0.964 2.824 2.708 -0.884 0.8170.6090.4570.510-0.988-1.652-1.563-1.411-1.494-3.645-3.692-3.216-0.904-0.3270.030 -1.727 -0.060 0.193 -0.133 -0.067 0.057 0.860 2.642 3.485 4.493 -0.237 -0.677-0.684-0.684-2.097-1.861-2.552-1.053-0.507-0.077 -2.035 -0.125 0.033 0.424 1.218 1.970 3.023 3.984 5.427 -0.4270.139-0.063 -3.125 0.299 1.352 2.805 3.183 3.759 5.130 0.088 2.475 3.773 4.193 5.402 2.759 4.483 5.397 Elevations TableNumber12345678910Minimum Elevation-8.000-6.000-4.000-2.0000.0002.0004.0006.0008.00010.000Maximum Elevation-6.000-4.000-2.0000.0002.0004.0006.0008.00010.00012.000Color1/8/2020 4:48 PM JFLEHAN N:\_2018\1018435\CAD\EXHIBITS\2020-01-06 - TREMONT - CUT FILL ANALYSIS.DWGPN1018435 | 2019.09.09 | ARDENT PROPERTIES527 W TREMONT AVE TOWNS ▪ CHARLOTTE, NC ▪ EARTHWORK ANALYSISSCALE:1"=30'15'30'45'75'0 APPENDIX B FIGURE 3 SAMPLE LOCATION MAP 511 and 527 West Tremont Avenue Charlotte, Mecklenburg County, North Carolina ECS Project Number 49:4913-A SOURCE: GOOGLE EARTH, DATED 2017 SCALE: 1-inch = ~ 90 feet APPROXIMATE GROUNDWATER SAMPLE LOCATION APPROXIMATE SITE BOUNDARY LEGEND 1’90’45’ APPROXIMATE SOIL SAMPLE LOCATION APPROXIMATE SOIL GAS SAMPLE LOCATION SB-1/TW-DRY SB-2 SB-3/TW-1/SG-1 SB-4/TW-2/SG-2 SB-6/SG-3/TW-DRY SB-5 SB-7/SG-4/TW-DRY SB-8/SG-5/TW-DRY IMPACTED GEOTECHNICAL BORING B-2 B-4 B-8 B-9 B-10 From Draft Report of Environmental Assessment dated October 24, 2017 APPENDIX C EXISTING BUILDING EXISTING BUILDING GROUNDWATER SAMPLE LOCATIONS APPROXIMATE LOCATION OF MONITORING WELLS SEE ATTACHED TABLES FOR SUMMARY OF ANALYTICAL RESULTS MW-1 APPROXIMATE LOCATION OF GEOPROBE GROUNDWATER SAMPLE POINT MW-5 MW-1 MW-2 MW-3 MW-4 TW-2 TW-1 SUBSECTION B FOR COMPOSITE SOIL SAMPLE EXISTING BUILDING EXISTING BUILDING SUBSECTION A FOR COMPOSITE SOIL SAMPLE SUBSECTION C FOR COMPOSITE SOIL SAMPLE SUBSECTION D FOR COMPOSITE SOIL SAMPLE SUBSECTION E FOR COMPOSITE SOIL SAMPLE B A E D C AREAS REPRESENTED BY COMPOSITE SOIL SAMPLES SEE ATTACHED TABLES FOR SUMMARY OF ANALYTICAL RESULTS EXISTING BUILDING EXISTING BUILDING VOC SOIL SAMPLE LOCATIONS APPROXIMATE LOCATION OF VOC SOIL SAMPLE SEE ATTACHED TABLES FOR SUMMARY OF ANALYTICAL RESULTS B-2 B-1 A-3 A-2 E-3 D-4 E-5 D-1 C-2 C-3 C-2 EXISTING BUILDING EXISTING BUILDING SOIL GAS SAMPLE LOCATIONS SG-4 SG-2 SG-1 SG-8 SG-7SG-5 SG-6 SG-5 APPROXIMATE LOCATION OF SOIL GAS SAMPLE SEE ATTACHED TABLES FOR SUMMARY OF ANALYTICAL RESULTS APPENDIX D TABLE 1: SUMMARY OF SOIL ANALYTICAL RESULTSWEST TREMONT AVENUE511 AND 627 WEST TREMONT AVENUECHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINAECS PROJECT NO. 49-4913-AParameterCOMPARISION CRITERIASample ID SB-1 SB-2SB-3SB-4SB-5SB-6SB-7SB-8Collection Depth (feet bgs) 2-4 3-5 1-3 2-4 3-5 8-100-20-2Collection DateDiesel Range Organics by XRFGROBRL2.3BRL1.98.5BRLBRL1.150Gasoline Range Organics by XRFDRO0.63.299.14.819.83.9389.613.1100Notes:Results presented in milligrams per kilogram (mg/kg), analogous to parts per million (ppm)Feet bgs = Feet below ground surfaceAction Level = North Carolina Department of Environmental Quality Action Levels for total petroleum hydrocarbonsBold denotes concentration exceeds the North Carolina Action Level Action LevelANALYTICAL RESULTS9/21/17 TABLE 2: SUMMARY OF GROUNDWATER ANALYTICAL RESULTS WEST TREMONT AVENUE 511 AND 627 WEST TREMONT AVENUE CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA ECS PROJECT NO. 49-4913-A Parameter Sample ID TW-1 TW-2 Collection Date Semi-Volatile Organic Compounds by 625 Fluoranthene 3.6 J BRL 300 300 Docosene 27 BRL NE NE Hexadecanoic acid 11 230 NE NE Cyclic octaatomic sulfer BRL 120 NE NE Eicosanol BRL 29 NE NE Volatile Organic Compounds by SM6200B 1,2,4-Trimethylbenzene BRL 3.6 400 28,500 1,3,5-Trimethylbenzene BRL 0.92 400 25,000 m,p-Xylenes BRL 0.85 J 500 85,500 Methyl-tert-Butyl Ether BRL 4.5 20 20,000 Naphthalene BRL 0.72 J 6 6,000 Xylenes, total BRL 0.85 J 500 85,500 Notes: Results presented in micrograms per liter (ug/L), analogous to parts per billion (ppb) NC2LGWQS = North Carolina Department of Environmental Quality 2L Groundwater Quality Standards GCL= Gross Contamination Levels BRL = below the laboratory reporting limit J = Estimated Concentration FROM DRAFT REPORT OF ENVIRONEMNTAL ASSESSMENT DATED OCTOBER 24, 2017 COMPARISION CRITERIA NC2LGWQS (ug/L) NC GCL (ug/L) ANALYTICAL RESULTS 9/21/17 TABLE 3: SUMMARY OF SOIL GAS ANALYTICAL RESULTS WEST TREMONT AVENUE 511 AND 627 WEST TREMONT AVENUE CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA ECS PROJECT NO. 49-4913-A Parameter Sample ID SG-1 SG-2 SG-3 SG-4 SG-5 Collection Date Chloromethane 7.1 18 91 59 8.0 626 7,880 Vinyl Chloride BRL 4.5 17 9.7 BRL 76.8 2,790 Chloroethane BRL BRL 9.9 11 BRL 69,500 876,000 Tertiary-butyl alcohol (TBA)7.1 72 21 27 19 NE NE Carbon Disulfide 25 81 14 16 BRL 4,870 61,300 Methyl tertiary-butyl ether (MTBE)7.8 5,300 BRL BRL BRL 3,600 47,200 2-Butanone (MEK)57 93 43 31 BRL 34,800 438,000 cis-1,2-Dichloroethene BRL 8.6 BRL BRL BRL NE NE Diisopropyl ether (DIPE)BRL 140 BRL BRL BRL 4,870 61,300 Ethyl tert-butyl ether (ETBE)BRL 15 BRL BRL BRL NE NE 1,2-Dichloroethane (DCA)BRL 4.7 BRL BRL BRL 36 472 Benzene 23 90 54 61 16 120 1,570 Tertiary amyl methyl ether (TAME)BRL 1,300 BRL BRL BRL NE NE 4-methyl-1-2-pentanone (MIBK)BRL 21 BRL 62 BRL 20,900 263,000 Toluene 54 89 47 BRL 24 34,800 438,000 2-Hexanone (MBK)BRL BRL BRL 12 BRL 209 2,630 Tetrachloroethene BRL BRL BRL 7.2 13 278 3,500 Ethylbenzene 7.7 260 22 16 BRL 374 4,910 m,p-Xylenes 19 880 18 26 BRL 695 8,760 Styrene 4.4 8.8 28 16 BRL 6,950 87,600 o-Xylenes 11 130 8.2 21 BRL 695 8,760 4-Ethyltoluene BRL 130 BRL BRL BRL NE NE 1,3,5-Trimethylbenzene BRL 130 BRL 70 BRL NE NE 1,2,4-Trimethylbenzene 7.3 340 12 50 7.3 48.7 613 Notes: Comparison Criteria = North Carolina DWM Soil Gas Screening Level (SGSL) from IHSB Levels DWM Vapor Intrusion Screening dated October 2016. Results presented in micrograms per cubic meter (ug/m3) NE = No Established Standard BRL = below the laboratory reporting limit Residential SGSL Non-Residential SGSL Target Volatile Organic Compounds by TO-15 COMPARISON CRITERIAANALYTICAL RESULTS 9/21/17