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HomeMy WebLinkAbout22061-18-092_NCDOT-CC Mangum_Approved EMP_20210608L3 PREPARED FOk. Rogers Lane Partners, LLC 1201 Edwards Mill Road Raleigh, North Carolina 27605 PREPARED BY: S&ME, Inc. 3201 Spring Forest Road Raleigh, NC 27605 Corporate Registration for Licensing of NC Geologists No. C-145 NC Engineering Firm No. F-0176 May 26, 2021 =0 May 26, 2021 Anthony Property Group 1201 Edwards Mill Road Raleigh, North Carolina 27607 Attention: Mr. Jason Clough via email: icloucih@aacre.com Project Manager / Development Reference: Environmental Management Plan (EMP) for Site Development 5000 Raleigh Beach Rd., 2901, 2905, and 2909 Sunrise Valley PI., 1840 and 1900 Southall Rd. Raleigh, Wake County, North Carolina 27610 Brownfields Project Name: NCDOT-CC Mangum-US64E Brownfields Project No. 22061-18-092 S&ME Project No. 4305-18-216A Dear Jason: Please find the enclosed Environmental Management Plan (EMP) to address site development activities for the site. This draft EMP is provided for review and comment, prior to submittal to the North Carolina Brownfield Program (NCBP). Our services were performed in general accordance with S&ME's proposal number 4305-18- 216A-CO4, dated December 11, 2019. Sincerely, S&ME, Inc. Michael W. Pfei fer Senior Project Manager mpfeifer@smeinc.com cc: Wayne Hightower (whightower@aacre.com) c�'V-- Samuel P. Watts, PG Senior Consultant swatts@smeinc.com Enclosure: Environmental Management Plan for Site Development, dated May 26, 2021 S&ME, Inc. 13201 Spring Forest Road I Raleigh, NC 27616 1 p 919.872.2660 1 www.smeinc.com Table of Contents North Carolina Brownfields Program Environmental Management Plan ChecklistForm.....................................................................................................................1 GeneralInformation...........................................................................................................3 Communications...................................................................................................................3 Notifications to the Brownfields Program.......................................................................4 RedevelopmentPlans..........................................................................................................4 ContaminatedMedia...........................................................................................................6 Part1. Soil...................................................................................................................................................6 Part2. Groundwater................................................................................................................................15 Part3. Surface Water................................................................................................................................17 Part4. Sediment........................................................................................................................................17 Part5. Soil Vapor.....................................................................................................................................18 Part6. Sub -Slab Soil Vapor.....................................................................................................................19 Part7. Indoor Air......................................................................................................................................19 Vapor Intrusion Mitigation System................................................................................20 ContingencyPlan................................................................................................................20 PostRedevelopment Reporting.......................................................................................23 ApprovalSignatures..........................................................................................................24 S&ME, Inc. 13201 Spring Forest Road I Raleigh, NC 276161 p 919.872.2660 1 www.smeinc.com Environmental Management Plan (EMP) for Site Development Brownfields Project Name: NCDOT-CC Mangum-US64E Brownfields Project No. 22061-18-092 S&ME Project No. 4305-18-216A Table of Contents (cont'd) List of Figures Figure 1 — NCBP Diagram for Temporary Containment of Impacted or Potentially Impacted Soil Figure 2 — Preliminary Development Exhibit Figure 3 — Maximum Contaminant Concentration Exhibit Figure 4 — Preliminary Development Exhibit with Maximum Contaminant Concentrations Figure 5 — Preliminary Grading Plan List of Appendices Appendix I — Amendments to Brownfields Redevelopment and Environmental Plan Appendix II — Summary of Soil Gas Analytical Results and Figure, December 6, 2019 Soil Gas, Soil, and Groundwater Assessment Report May 26, 2021 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. 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. EMP Version 2, June 2018 Date: 5/18/2021 GENERAL INFORMATION Revision Date (if applicable): Click or tap to enter a date. Brownfields Assigned Project Name: NCDOT-CC Mangum-LIS64E Brownfields Project Number: 22061-18-092 Brownfields Property Address: 5000 Raleigh Beach Rd., 2901, 2905, 2908, and 2909 Sunrise Valley PI., 1840, 1800, and 1900 Southall Rd. 1135 North Rogers Lane and 5655 New Bern Ave., Raleigh, NC Brownfields Property Area (acres): approx. 62 acres 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): Rogers Lane Partners, LLC Contact Person: Jason Clough Phone Numbers: Office: 919-582-3122 Email: jclough@aacre.com Contractor for PD: To be determined. Contact Person: Click or tap here to enter text. Phone Numbers: Office: Click or tap hereto enter text Email: Click or tap here to enter text. Environmental Consultant: S&ME, Inc. Contact Person: Sam Watts Phone Numbers: Office: 919-872-2660 Email: swatts@smeinc.com Brownfields Program Project Manager: Brad Atkinson Phone Numbers: Office: 919-707-8748 Email: brad.atkinson@ncdenr.gov EMP Version 2, June 2018 Mobile: Click or tap here to enter text. Mobile: Click or tap here to enter text. Mobile: 919-801-4920 Mobile: Click or tap here to enter text. Other DEQ Program Contacts (if applicable, i.e., UST Section, Inactive Hazardous Site Branch, Hazardous Waste, Solid Waste): _iicK or iap nere io enter iexi. 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 onsitetask: 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 El Other specify: Click or tap here to enter text. 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): Provide brief summary of redevelopment plans, including demolition, removal of building slabs/pavement, grading plans and planned construction of new structures: EMP Version 2, June 2018 Preliminary development plans for the site are included in this EMP. The latest iteration of development plans includes construction of a retail grocery store, and retail outparcels, on the western portion of the site (Phase 2). The central and eastern portions of the site (Phase 1 and Phase 3) will be developed with a mix of apartments, retail, and office buildings. The conceptual site plan is included as Figure 2. 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 ves, 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: 10/1/2021 b) Anticipated duration (specify activities during each phase): Q4 2021. Begin with rough grading of entire site and installation of streets and utilities. Will continue with construction of stormwater control measures (SCMs) and filling the existing SCM. Q2 2022. Begin construction of residential multifamily apartment buildings in Phase 1. c) Additional phases planned? ❑ Yes ❑ No If yes, specify the start date and/or activities if known: Start Date: To be determined. The year 2023 or later. Planned Activity: Development of structures on Phases 2, 3, and 4. Start Date: Click or tap to enter a date. Planned Activity: Click or tap here to enter text. S EMP Version 2, June 2018 Start Date: Click or tap to enter a date. Planned Activity: Click or tap here to enter text. d) Provide the planned date of occupancy for new buildings: 4/1/2023 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): Laboratory analysis of soil samples, collected from the site, detected arsenic at a concentration greater than its Preliminary Health Based Soil Remediation Goal (PSRG). It should be noted that arsenic is a naturally occurring element that is often present in soil at a concentration greater than its respective PSRG. Laboratory analysis of soil samples, collected following the excavation of petroleum -impacted soil at the aboveground storage tank (AST) farm in October 2004, detected Oil and Grease and Total Petroleum Hydrocarbons (TPH) — Diesel Range Organics (DRO) at concentrations above their respective UST Section Action Levels. 2) Depth of known or suspected contaminants (feet): Arsenic was detected, at concentrations similar to naturally occurring levels in the area, from the ground surface to 12 feet below the subsurface. Oil and Grease and TPH-DRO were detected above their respective UST Action Levels at depths 6 EMP Version 2, June 2018 ranging from 2 feet below the ground surface to 15 feet below the ground surface. 3) Area of soil disturbed by redevelopment (square feet): Preliminary development plans are included in this EMP. It is anticipated that the entire site will be disturbed for redevelopment, except for the tree -save areas that have already been designated on the site. The western portion of the site encompasses an area of approximately 742,000 square feet. The central and eastern portions of the site encompass an area of approximately 1,200,000 square feet. 4) Depths of soil to be excavated (feet): It is estimated that soils may be excavated from 0 to 16 feet below ground surface. Exact depths of soils to be excavated have not yet been determined. 5) Estimated volume of soil (cubic yards) to be excavated (attach grading plan): The estimated volume of soil to be excavated is approximately 208,196 cubic yards. A preliminary site development plan is attached as Figure 2, and a preliminary grading plan is attached as Figure S. 6) Estimated volume of excavated soil (cubic yards) anticipated to be impacted by contaminants: The estimated volume of soil to be excavated is approximately 208,196 cubic yards, of which 86,880 cubic yards is expected to be disposed offsite. It should be assumed that soil across the site will contain naturally occurring arsenic at a concentration greater than its respective PSRG. Soil containing Oil and Grease and TPH-DRO at concentrations greater than their respective UST Action Levels is assumed to be confined to the area of the former AST Farm. 7) Estimated volume of contaminated soil expected to be disposed of offsite, if applicable: The estimated volume of soil to be excavated and disposed offsite is approximately 86,880 cubic yards. It should be assumed that soil across the site will contain naturally occurring arsenic at a concentration greater than its respective PSRG. Soil containing Oil and Grease and TPH-DRO at concentrations greater than their respective UST Action Levels is assumed to be confined to the area of the former AST Farm. To minimize the amount of soil transported off -site, and minimize the amount of soil brought on -site, soil excavated to achieve the desired grade in areas of cut should be used for backfilling in areas that require fill. 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 preliminarydata available). 1) HAZARDOUS WASTE DETERMINATION: a) Does the soil contain a LISTED WASTE as defined in the North Carolina Hazardous EMP Version 2, June 2018 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 POLICYTHE 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. ❑ 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: Laboratory analysis of soil samples, collected from the site, detected arsenic at a concentration greater than its Preliminary Health Based Soil Remediation Goal (PSRG). It should be noted that arsenic is a naturally occurring element that is often present in soil at a concentration greater its respective PSRG. Soil containing Oil and Grease and TPH-DRO at concentrations greater than their respective UST Action Levels is assumed to be confined to the area of the former AST Farm. d) NOTE: IF SOIL MEETS THE DEFINITION OF A CHARACTERISTIC HAZARDOUS WASTE, THE SOIL MAYNOT 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 8 EMP Version 2, June 2018 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. For those metals that are naturally occurring at concentrations greater than PSRGs, a comparison will be made to background concentrations. Additional comments: _iiu< or tap here to enter text. 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: Soils will be capped with buildings and paved surfaces over a majority of the site. Soils that are not under these areas will be covered with vegetation. A minimum amount of exposed soil is anticipated upon completion of final site development. ® 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: -k or tap here to ent-- +_ 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: * Minimize the number of times the contaminated or stockpiled soil is handled; * Material handling will be conducted in the controlled exclusion zone outside the EMP Version 2, June 2018 excavation area. * If fugitive dust becomes a problem for the workers or looks like it may leave the site, fugitive dust emissions will be controlled as needed to by wetting, using water obtained from clean sources. * Care shall be taken not to over -wet excavated soil. ❑ No, explain rationale: Field Screening of site soil ® Yes, describe the field screening method, frequency of field screening, person conducting field screening: A qualified environmental professional from S&ME will utilize a photoionization detector (PID) to screen the excavated soils in the area of the former AST Farm near the former asphalt plant, where Oil and Grease and TPH-DRO were detected above their respective UST Action Levels. ® No, explain rationale: Analytical results of the environmental assessment indicate arsenic was the only constituent detected above its respective PSRG across the remainder of the site. Arsenic is naturally occurring in this area at a concentration that exceeds the PSRG. Detections of other constituents were below their respective PSRGs. Therefore, field screening of site soil will not occur unless an unknown area of concern is encountered. If an unknown area of concern is encountered, redevelopment activities in the area will be suspended. The construction company will immediately notify S&ME and the PD. A qualified environmental professional from S&ME will assess the area, evaluate the waste materials and/or impacted media in the area, if present, and determine the proper means for managing these materials. Within 24 hours, S&ME will inform NCBP of the findings and subsequent actions to be taken for managing these materials. Soil Sample Collection ® Yes, describe the sampling method (e.g., in -situ grab, composite, stockpile, etc.): There is a potential for petroleum -impacted soil in the area of the former AST Farm near the former asphalt plant. If field screening of soils in this area indicates the presence of significant contamination, and if these soils need to be disposed of offsite, a soil sampling plan will be developed, in coordination with the NCBP Project Manager, following the Inactive Hazardous Sites Branch (IHSB), Guidelines for Assessment and Cleanup of Contaminated Sites, January 2020 (or most recent version). Additionally, if the soils are going to be disposed at a licensed disposal facility, and the facility will not accept the historic data as sufficient, then soil samples may need to be collected, for laboratory analysis. ® No, explain rationale: 10 EMP Version 2, June 2018 An approved environmental assessment was conducted for the site which was used to screen on -site soils and determine if contamination was present. Composite samples were submitted for SVOC and metals analysis and grab samples were submitted for VOC analysis. Results of the environmental assessment indicated that arsenic was present above its PSRG, but it is also naturally occurring in this area at a concentration above its PSRG. No other constituents were detected above their respective PSRGs. Additional soil sample collection is not anticipated at this time. If an unknown area of concern is encountered, redevelopment activities in the area will be suspended. The construction company will immediately notify S&ME and the PD. A qualified environmental profession from S&ME will assess the area, evaluate the waste materials and/or impacted media in the area, if present, and determine the proper means for managing these materials. If impacted media is present, an S&ME representative will collect soil samples for laboratory analysis. Within 24 hours of receiving analytical results, S&ME will inform NCBP of the findings and subsequent actions to be taken for managing these materials 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): Click or tap here to enter text. ❑ 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): Click or tap here to enter t. ® 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: Click or tap here to enter text. ® Final grade sampling of exposed native soil (i.e., soil that will not be under buildings or 11 EMP Version 2, June 2018 permanent hardscape). Select chemical analyses for final grade samples with check boxes below (Check all thatapply): ® 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): Click or tap here to enter text. ❑ Pesticides: Specify Analytical Method Number(s): ❑ PCBs: Specify Analytical Method Number(s): UICK or tap nere to enter text ❑ Other Constituents & Respective Analytical Method(s) (i.e. Hexavalent Chromium, Herbicides, etc.): Click or tap here to enter text. 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. If VOCs are detected near the asphalt plant area and those soils are exposed (or moved on - site), then final sample locations will be coordinated with NCBP Project Manager prior to occupancy of relevant buildings near the exposed soil. ® If final grade sampling was NOT selected please explain rationale: Arsenic was the only constituent detected at a concentration greater than its Preliminary Health Based Soil Remediation Goal (PSRG). However, arsenic is a naturally occurring element that is often present in soil at a concentration greater its respective PSRG in this area of the State. Part 1.6. 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: 12 EMP Version 2, June 2018 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? Estimated volume of fill soil to be imported to the site has not yet been determined. 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.) Estimated depths of fill to be placed at the property have not yet been determined. 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: Wake Stone Corporation 6811 Knightdale Blvd. Knightdale, NC 27545 Phone — 919-266-9266 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 atthe Brownfields property. Fill soil from Wake Stone Corporation has been pre -approved by the NCBP by analytical testing for use on other Brownfields projects. The Wake Stone Knightdale Quarry is a secure facility surrounded by fencing, and has been a crushed stone mining operation since approximately 1970. Through the crushed stone manufacturing processes (blasting, mining, crushing, and screening), "fines" (stone not otherwise classified by size, intended use, or other criteria) are produced which, in turn, are routinely used for compaction fill. 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): ri;rL nr +nn here to Pam+ f ❑ Pesticides: Specify Analytical Method Number(s): I.IIUK VI ldp IICIC lV CIIICI lCh ❑ 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 tex' 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 13 EMP Version 2, June 2018 borrow sites. If using a quarry, provide information on the type of material to be brought onto the Brownfields Property. Fill materials will be brought on site from the Wake Stone Corporation. Wake Stone has been pre - approved by the NCBP by analytical testing for use on other Brownfields projects. 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. It is estimated that soil may be excavated from depths ranging from 0 to 16 feet below ground surface (ft-bgs). Approximately 86,880 cubic yards will be exported offsite. The exported soil is contaminated with arsenic. To minimize the amount of soil disposed of off -site, and minimize the amount of soil brought on -site, soil excavated to achieve the working elevation in areas of cut should be stockpiled on -site and then used for backfilling and site restoration. 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 thata 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 14 EMP Version 2, June 2018 details related to the proposed plans). Exported soil from the Brownfield site may be transported to the closed Wilder's Grove MSW Landfill owned by the City of Raleigh, which is across from the City of Raleigh Yard Waste Center located at 900 New Hope Rd., Raleigh, NC. The City will use the soil for maintenance to fill landfill subsidence which occurs over time. The soil will still be regulated under a closure permit. Excess fill from Brownfields sites have previously been used in this manner (NCPB #20031-16-092 and #2206-18-092 and #22043-18-092) City of Raleigh contact - Mr. John Ennis - 919-250-2728 For other disposal destinations that have not yet been identified, the contact info will be amended to this EMP and will be provided to the NCBP, once the final destination is determined. Part 1.D. MANAGEMENT OF UTILITY TRENCHES ❑ Install liner between native impacted soils and base of utility trench before filling with clean fill (Preferred) ® Last out, first in principle for impacted soils (if soil can safely be reused onsite and is not 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? ❑ Ifyes, provide specifications on barrier materials: Click or tap I � 1«1 ❑ If no, include rationale here: CIir-'- -. tap here — PntPr taxt 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? The depth to groundwater at the Brownfields property ranges from 10 to 55 feet below the ground surface. 2) Is groundwater known to be contaminated by ®onsite ❑offsite ❑both or ❑unknown sources? Describe source(s): 15 EMP Version 2, June 2018 The main source of groundwater contamination at the site is from solvents related to the former operation of an asphalt plant at the site. 3) What is the direction of groundwater flow at the Brownfields Property? East toward the Neuse River. 4) Will groundwater likely be encountered during planned redevelopment activities? ®Yes ❑No If yes, describe these activities: Some areas are expected to be cut to depths up to 16 ft-bgs. Groundwater may be encountered in these areas. During the shallow groundwater assessment conducted in November 2018, analytical results of the samples indicated that none of the target constituents were detected above the laboratory's method detection limits. S&ME concluded that historic groundwater contamination as a result from the site's former operation of an asphalt plant is no longer present in the shallow aquifer. Therefore, contaminated groundwater is not expected to be encountered during development activities. 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., dewateringof groundwater from excavations or foundations, containerizing, offsite disposal, discharge to sanitary sewer, NPDES permit, or sampling procedures). If contaminated groundwater is encountered that will inhibit the progress of site development, the contaminated groundwater will be pumped from the excavation, contained, sampled, and properly disposed at a licensed facility if needed. 5) Are monitoring wells currently present on the Brownfields Property?.................❑xYes ❑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: All known, existing monitor wells will be properly abandoned in accordance with applicable State and local regulations. 16 EMP Version 2, June 2018 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): S&ME collected environmental samples of sediment and surface water from the pond on October 7, 2019 for analysis of VOCs by 8260, SVOCs (PAHs only) by 8270, 8 RCRA Metals, and Hexavalent Chromium. Laboratory analysis of the surface water indicated all constituents were less than Surface Water (213) Standards. On November 6, 2019 the dam of the on -site pond was breached, and the pond was drained, following an Environmental Management Plan (EMP) approved by the NCBP, and following Division of Water Quality (DWQ) guidance for draining ponds. A small spring/stream has formed on -site in the location of the former pond. In the event that contaminated surface water is encountered that will inhibit the progress of site development, the contaminated surface water will be contained, sampled, and properly disposed at a licensed facility if needed 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. 17 EMP Version 2, June 2018 5) In the event that contaminated sediment is encountered during redevelopment activities, list activities for management of such events (stream bed disturbance): On November 6, 2019 the dam of the on -site pond was breached, and the pond was drained, following an Environmental Management Plan (EMP) approved by the NCBP, and following Division of Water Quality (DWQ) guidance for draining ponds. There are no other on -site locations where sediments might be encountered. In the event that contaminated sediment is observed through visual or olfactory observations, the contaminated sediment will be stockpiled as shown in the attached Figure 1. S&ME will collect a sample from the stockpiled material for analysis. The stockpiled sediment will be re -used on site, or disposed at a licensed disposal facility pending analytical results. 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:..... El 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? Soil vapor samples were collected across the site up to depths of 10 ft-bgs. A summary table with the soil vapor concentrations and accompanying Figure with sample locations are included in Appendix II. 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 laboratory analytical results from the soil gas assessment conducted at the site in October 2019 indicate 1,3-butadiene was detected in several of the samples at concentrations exceeding its respective Residential Soil Gas Screening Level (SGSL). S&ME utilized the NCDEQ Risk Calculator to evaluate the vapor intrusion risk of 1,3-butadiene and the cumulative risk of other VOC detections in the soil gas across the site. The results of the NCDEQ Risk Calculator indicated that 1,3-butadiene potentially exceed the residential vapor intrusion risk. Prior to site 18 EMP Version 2, June 2018 development, soil gas samples shall be collected beneath the footprint of the proposed residential structures on the property and if the results indicate a vapor intrusion risk, vapor mitigation systems will be installed beneath the residential structures. The planned commercial and residential structures are shown on Figures 2 and 4. If contaminated vapors are encountered during redevelopment activities, which might inhibit the safe work practices of the construction personnel, a temporary ventilation system should be installed to divert contaminated vapors away from the breathing zone of the site workers and the public. 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? El 0-6 inches ❑Other, please describe: Click or tap here to enter text. 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 If contaminated sub -slab vapors are encountered during redevelopment activities that will inhibit the safe work practices of the construction personnel, a temporary ventilation system will be installed to divert contaminated vapors away from the breathing zone of the site workers and the public. 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: 19 EMP Version 2, June 2018 If contaminated indoor air is encountered during redevelopment activities that will inhibit the safe work practices of the construction personnel, a temporary ventilation system will be installed to divert contaminated vapors away from the breathing zone of the site workers and the public. 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: To be determined 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: Prior to site development, soil gas samples shall be collected beneath footprint of the proposed residential structures on the property and if the results indicate a vapor intrusion risk, vapor mitigation systems will be installed beneath the residential structures. See Figures 2 and 4 for locations of the planned commercial and residential structures. 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, orother 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 20 EMP Version 2, June 2018 silver) Click or tap here to enter text. ❑ 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 & 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. Please provide details on the proposed methods of managing the following commonly encountered issues during redevelopment of Brownfields Properties. This EMP has been prepared to address site development. Analytical results of the sediment and soil indicate arsenic was the only constituent detected above its respective PSRG. Arsenic is naturally occurring in this area at concentrations that exceed its PSRG. Detections of other constituents were below their respective PSRGs. Laboratory analysis of soil samples, collected following the excavation of petroleum -impacted soil at the aboveground storage tank (AST) farm in October 2004, detected Oil and Grease and Total Petroleum Hydrocarbons (TPH) — Diesel Range Organics (DRO) at concentrations above their respective UST Section Action Levels. So there is a potential for petroleum -impacted soil to be encountered in this area. In areas of suspected petroleum/VOC contamination, a qualified environmental professional from S&ME will utilize a photoionization detector (PID) to screen the excavated soils. If field screening of excavated soils indicates the presence of significant contamination, the suspected contaminated soil will be stockpiled as shown in the attached Figure 1. A soil sampling plan will be developed, for the excavated soils, in coordination with the NCBP Project Manager, considering the final disposal location of the excavated soil (e.g., on -site or off -site), and generally following the Inactive Hazardous Sites Branch (IHSB), Guidelines for Assessment and Cleanup of Contaminated Sites, January 2020 (or most recent version). Analytical results of the surface water and groundwater indicate that none of the target constituents were detected at concentrations above their respective 2B Surface Water standards or 2L Groundwater standards. Underground Storage Tanks: If a UST is encountered, • Redevelopment activities in the area will be suspended. The construction company will immediately notify S&ME and the PD. 21 EMP Version 2, June 2018 S&ME will assess the area, evaluate the waste materials and/or impacted media in the area, if present, and determine the proper means for managing these materials. Within 24 hours, S&ME will inform NCBP of the findings and subsequent actions to be taken for managing these materials. If a UST is uncovered, confirmatory samples will be collected from the tank basin, four sidewalls, and along any associated product lines not to exceed 10-foot intervals. Samples collected from the newly discovered contaminant source area(s) will be submitted to a North Carolina certified laboratory for analysis. Analytical methods to be employed for these samples may include one or more of the following: VOCs, by Method 8260; SVOCs, by Method 8270; VPH by MADEP; EPH by MADEP; RCRA Metals, by Methods 6010/7471; Pesticides, by Method 8081; Herbicides, by Method 8151; Polychlorinated biphenyls (PCBs), by Method 8082; Corrosivity, by Method 1110A; Reactivity, by Method 9012; and/or, Flashpoint, by Method 1010. An environmental waste management company will be contracted for removal of contents of the UST, and to clean up any hazardous substances that may have been released. Redevelopment activities will not resume until after released hazardous substances have been removed, and any explosive or dangerous atmospheric conditions have been mitigated. Sub -Grade Feature/Pit: * If previously undiscovered buried features or pits are encountered, invasive activities in the area will be suspended. * The construction company shall immediately notify S&ME and the PD. * S&ME will assess the area and if impacted media is present, S&ME will direct management of the impacted media in the same manner as described above for Underground Storage Tanks. * Within 24 hours, S&ME will inform NCBP of the findings and subsequent actions taken for managing these materials. * If field screening of excavated soils indicates the presence of significant contamination, the suspected contaminated soil will be stockpiled as shown in the attached Figure 1. * A soil sampling plan will be developed, for the excavated soils, in coordination with the NCBP Project Manager, considering the final disposal plans for the excavated soil (e.g., on -site or off -site) and generally following the IHSB Guidelines for Assessment and Cleanup of Contaminated Sites, January 2020 (or most recent version). Buried Waste Material: * If buried waste material is encountered, invasive activities in the area will be suspended. * The construction company shall immediately notify S&ME and the PD. * S&ME will assess the area and if impacted media is present, S&ME will direct management of the impacted media in the same manner as described above for Underground Storage Tanks. * Within 24 hours, S&ME will notify the NCBP of the findings and subsequent actions taken for managing these materials. Re -Use of Impacted Soils On -Site: Arsenic is the only constituent which has been detected above its respective PSRG. Arsenic is 22 EMP Version 2, June 2018 naturally occurring in this area of North Carolina at concentrations that exceed its PSRG. On -site soil impacted with arsenic may be re -used on -site without any restrictions. Various anthropogenic constituents were detected in the on -site soil below their respective PSRGs. These soils may also be re -used on -site without any restrictions. If other previously unidentified, impacted soil is identified on -site, the impacted soils will only be re -used onsite following approval by the NCBP Project Manager. 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 I.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: 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 Date is unknow at this time. PD will provide date when known. 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). 23 EMP Version 2, June 2018 ❑X 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. 24 EMP Version 2, June 2018 APPROVAL SIGNATURES Brownfields Project Number: 22061-18-092 Brownfields Project Name. NCDOT-CC Mangum-US64E rospe i Developer: Rogers Lane Partners, LLC Printed ame/Title/Company: Wayne Hightower /President Date C_i€r_:1 _'I E.a , ,, w(ei o (1x�. Consultant: S&ME, Inc. Date 5/26/2021 Printed Name/Title/Company: Sam Watts, PG/Senior Project Mgr Brownfields Project Manager:Brad Atkinson 25 EMP Version 2, June 2018 6/8/2021 Date . Environmental Management Plan (EMP) for Site Development Brownfields Project Name: NCDOT-CC Mangum-US64E Brownfields Project No. 22061-18-092 FIGURES S&ME Project No. 4305-18-216A May 26, 2021 Figure 1 NCBP Diagram for Temporary Containment of Impacted or Potentially Impacted Soil Cross -Section View Top Plastic Cover Sheeting: Underliner: 1 layer, minimum of 10 (1 Layer, minimum: 10 mil thick) mil thick plastic Berm (Straw bales, Weight composted earth, etc.) (If plastic cover used) Land Contaminated Soils Surface \ x Map View Straw Bale Berm Weight O f ■ L Contaminated Soils { ■ u ■ o Plastic Sheeting Note: Adapted from NC DEQ UST Section "Guidelines for Ex Situ Petroleum Contaminated Soil Remediation" dated December, 1, 2013 26 EMP Version 2, June 2018 i • - '+: �' �Q +�' ( ro 1 d :. 1 � U --S, ..: Y \gr sw r3 tw SW-1 � - � - t `^ t. r ry t FL-1 + ; rt'—�- r-1 t • ' T - �� FLs2 pL_q ,a SG-7 ,_ SW-2 I• SW 11 - } , \CCO . •' SW-3 ® ? a 31F - Y FIL FL_9 SW-4 • . ® 03 + Q V FL-10 s \Je! tr Q SW-5 `' ® SW-8 , -6 SW • ag SW-7 , Nk ► �, ss-3 5G 5 ss-a 6 �aa .ti :. • c� v K.,•'�Y -. , • '"{" q, CLP I S&ME MW-4 58iME MW-11 _ YYYY CLP MW-12 • ,�p.,k. S&MEIMW=10 S&MEMW-, - • wsW-T CLPMW-2 F sED-2 {,1' u'' `; ;'` SG-7 * • -LP MW-3 • • sE�-a 1 / • a d��e • CLP MW-8 - ! ^ � SG-14 SED-1 ss-z ' Yp� • $LU SEME.MW-3 t • 5&MEMW-12 _ - 4 � � � '✓� . fix{ f SG 13 • y ,� SEE INSET, TOP RIGHT �I , *�O • �F_ i + . RO r . b 4 „ t sG-,o +• L - i, . - s—� �r 9e7S F .+` r'' a y f t Je- aj o- r r i 'y 'r' . ; k ;. s • r"� ` _ .. .'''F;r F ,w:�L1�•' ��e..,yti'.''. r I �1iF! ,. x.PJ ,_ " k h f e QieCr'` i 1' lk b, a '4• AZ _ * w X. O r?. *A gUSton Grog o�G'o F • Sample Locations e �r gyp, c. 0 300 1600 ~ - '; Monitor Well � �E17 U� r (10 Water Supply Well IFo� o w A ® SOII Boring REFERENCE: 0 Passive Soil Gas Sampling Location GIS BASE LAYERS WERE OBTAINED FROM THE 2017 NCONEMAP AERIAL ORTHOIMAGERY N� }' LAYER AND THE JDAVIS, EDGEWATER COMMONS MATER PLAN, RALEIGH NORTH i °` . , Q Sediment Sample CAROLINA, PRELIMINARY SITE MAP DATED 9/2/2020. THIS MAP IS FOR INFORMATIONAL >��'.� ' PURPOSES ONLY. ALL FEATURE LOCATIONS DISPLAYED ARE APPROXIMATED. THEY ARE = Surface Water Sample • NOT BASED ON CIVIL SURVEY INFORMATION, UNLESS STATED OTHERWISE. Groundwater Contaminant Sample Location Date of Sampling Concentration Exceeding Standard 2L Standard (µg(L) 1,1-dichlorcethene S&MEMW-1 3/28/1990 33 7 1,2-dichlorcethane S&MEMW-1 3/28/1990 19 0.4 trichloroethylene S&MEMW-1 3/28/1990 780 3 S&ME MW-3 10/18/1999 80 S&ME MW-4 6/23/1997 6 S&ME MW-10 6/5/2001 22 ~ x X z Q 10-1 Y.,� W V O U W F- -< � z Q 17 ��11 'C 1--I N O , Q 00 Z �p '1 CD Q N LU O Z 2 H Z Q 0 O N Z QI LU LU V' ~ E 0 Z _ U O U CD O Y Z LL lD LU LU < S&ME MW-11 10/20/1999 4.8 S&ME MW-12 6/8/2001 64 CLP MW-2 4/28/2005 4.7 CLP MW-3 4/29/2005 64 CLP MW 5 4/29/2005 4.2 CLP MW-8 4/28/2005 63 CLP MW-12 4/29/2005 7 CLPMW-13 4/28/2005 16 WSW-T 4/29/2005 5.3 tetrachloroeth lene S&MEMW-1 7/8/2003 1.2 0.7 chromium S&MEMW-9 9/21/2004 45.5 10 Soil Gas Contaminant Sample Location Date of Sampling Concentration Exceeding SGSL ( ms) Residential a SGSL (µghn) 1,3-butadiene SG-4 10/15/2019 34 14 SG-5 31 sG6 16 SG-724 SG9 23 SG-10 40 SG-13 15 SG14 18 Sediment Contaminant azsenic Sample Location SED-1 Date of Sampling 10/7/2019 Concentration Exceeding PSRG /r� (mg/Kg) 3.6 Residential PSRG (mg/Kg) 0.68 SED-2 1.9 SED 3 0.95 Soil Contaminant Sample Location Date of Sampling Concentration Exceeding PSRG (mgg) Residential PSRG (mg/Kg)V arsenic SS-1 10/15/2019 1.9 0.68 SS-2 1.4 SS-3 2.3 33-4 1.2 SS-5 1 SS-6 1 Oil and Grease SW-1 10/27/2004 310 250* SW-2 380 SW-3 250 SW-5 270 SW-6 320 SW-7 400 SW-8 450 SW-11 390 SCALE: 1 300 ' ' = SW-13 850 29 FL-2 0 DATE: 4-15-21 FL-4 250 FL-5 1,300 FL-6 3,300 PROJECT NUMBER 4305-18-216A FL-8 4,800 FL-9 270 FL-10 280 FIGURE NO. Total Petroleum Hydrocazbons-Diesel FL-5 10/27/2004 220 100* FL-8 3,800 "UST Section Action Lewl Concentration Groundwater Sample Date of 2L Standard Exceeding Standard Contaminant Location Sampling (11gL) U o (JAgIL) s,Dr etlaq SW-1 -(�-SW-11 3 1,1-dichloroethene SWE MW-1 3/28/1990 33 7 L ti OE 1,2-dichloroethane SWE MW-1 3/28/1990 19 0.4 r 1 -rl ' SWE MW-1 3/28/1990 780 T.;Lrr (D FIL `Z FL-2 SWE MW-3 10/18/1999 80 FL-4 SG-7 SW-2 -(:j> @ SW-1.1- SWE MW-4 6/23/1997 6 .7 0 L T 7 1.1.� '�L' S&ME MW-10 6/5/2001 22 7 ZA, I e i g 13713-e5�c FL FL-8 S&ME MW-11 10/20/1999 4.8 SW-3 V S&ME MW-12 6/8/2001 64 --------- -�;I % trichloroethylene CLP MW-2 4/28/2005 4.7 3 -6 eavwi jp'.P. SCM FT FL-6 FC:9,' CLP MW-3 4/29/2005 64 SW-4 (D CLP MW-5 4/29/2005 4.2 FrI CLP MW-8 4/28/2005 63 Y" F7,1 0 - ol 1A 4 -60 - , :: —4. -� 5 CLP MW-12 4/29/2005 7 SW e CLP MW-13 4/28/2005 16 U S 6 Sw-7 WSW-T 4/29/2005 5.3 W- 0.7 tetrachloroethylene S&ME MW-1 7/8/2003 1.2 "A0 chromium S&ME MW-9 9/21/2004 45.5 10 ssis". —14 h/ Concentration Soil Gas Sample Date of Residential fr s iri h r f ss ��t I" ' r 4 ^y -a• LEIExceeding SGSL Contaminant Location Sampling SGSL (Rg/I Q; 9 55-3 If /fMAI w/I S -s 4 SG-4 34 SS-4 e; S&ME MW-9 — ... 6F . % SC-5 31 SG-6 16 A, 24 4 1,3-butadiene 10/15/2019 14 -X SG-9 23 S -10 IG 40 ;rI 4. CILP MW-5 4s&MF'MW 4. M K E.. SG-13 15 SG-14 18 S�' 1 r ):CLP M. -'ni :M Prop. SCM Concentration Y W-jj ClLiO �ED-2 • a -SE 3i. Sediment Sample Date of Residential Contaminant Location Sampling Exceeding PSRG PSRG (mg/Kg) USG-. �ED-11 EX SCM &ME MW- (-g/Kg) S, SED-1 3.6 ff S EMW 12 arsenic SED-2 10/7/2019 1.9 0.68 SG-13 -�X SED-3 0.95 :]SEE INSET, TO P RIGHJTZ,, '171 L 71 A Concentration ey A- SRG (mgtKg) Soil Contantin Sample Date of Residential ILL.- -rr-1 IT 1 11 Exceeding PSRG 'r5. ant Location amplin S P (mg/Kg) 9 *z ff SG,10I,---z� r SS-1 1.9 SS-2 1.4 7 C? SS-3 2.3 arsenic 10/15/2019 0.68 33-4 1.2 N Prop SCM SS-5 ."z/ ti Ilk "e $S-6 1 F; -1 310 T. 2 'T 11� SW-2 380 L SW-1 F SW-3 250 ;ti0 Ij LL SW-5 270 4, Z SW-6 320 SW-7 400 IllIlk SW-8 450 390 d W-1 371 SW_ 11. SW-1 1 Oil and Grease SW-13 10/27/2004 850 250* FLA 290 Sample Locations 0 Proposed Residential Structures FL-2 300 Monitor Well Proposed Commercial Structures 0 300 600 FL-4 FL-5 1,3250 I.00 Water Supply Well (FEET) FL-6 3,300 1 (D Soil Boring Construction Phase -8 4800 Passive Soil Gas Sampling Location Sediment Sample Surface Water Sample FL-9 270 FL-10 280 Total Petroleum FL-5 10/27/2004 220 100* Hydrocarbons - Diesel, FL-8 3,800 *UST Section Action Level R 00 I? < 00 z _j 0 ko 0 r\j U LU 0 z < —j 0 V) Z —j LU LU 0 LL. 0 z z ::) 0 U 0oC LU 0 Z 3f L<L. (D V) LU Of —i LU < 0 Of OfOf SCALE: 1 = 300 DATE: 4-15-21 PROJECT NUMBER 4305-18-216A FIGURE NO 4 =0 Environmental Management Plan (EMP) for Site Development Brownfields Project Name: NCDOT-CC Mangum-US64E Brownfields Project No. 22061-18-092 APPENDIX I S&ME Project No. 4305-18-216A Amendments to Brownfields Environmental Management Plan May 26, 2021 4 Environmental Management Plan (EMP) for Site Development Brownfields Project Name: NCDOT-CC Mangum-US64E Brownfields Project No. 22061-18-092 S&ME Project No. 4305-18-216A -_19:2 4►1DJK:,1LTA 14►17LTA 14Zk&1kt0l1:T01TAi!Ia144�724zLTJI:Z81ZIiTi14►►L14LTA /_1►/_[cl4 LTA14 1!k29W_1►� Amendments must have the concurrence of both the Prospective Developer (Anthony Property Group) and the North Carolina Brownfields Program prior to implementation of each amendment. AMENDMENT EFFECTIVE SUBJECT NUMBER DATE May 26, 2021 Environmental Management Plan (EMP) for Site Development r Brownfields Project Name: NCDOT-CC Mangum-US64E III Brownfields Project No. 22061-18-092 S&ME Project No. 4305-18-216A APPENDIX II Summary of Soil Gas Analytical Results and Figure - December 2019 May 26, 2021 s © Table 5 Summary of Soil Gas Analytical Data f I I Rogers Farm (BF ID No. 22061-18-082) fRaleigh, Wake County, North Carolina S&ME Project No. 4305-18-216A Analytical Method Volatile Organic Compounds by EPA TO-15 (µ ims) Analyte ?L m � e e Sample ID Date Collected v" m V 0 N m L SG-4 10/15/2019 59 33 34 11 J 4.3 J <1.3 4.7 7.9 J 15 12 11 31 <0.82 <20 <6.9 66 2.5 Z-01 400 12 <1.4 180 <1.1 <11 <4.5 13 3.8 62 SG-5 10/15/2019 130 17 31 22 J <6.2 <1.3 <0.98 <15 17 16 14 <28 <0.82 20 <6.9 67 <1 210 <0.85 0.9 J 250 <1.5 <l.l <4.5 17 5.3 84 SG-6 10/15/2019 45 16 16 12 J <6.2 0.45 J <0.98 <15 11 8.8 13 <28 <0.82 <20 <6.9 82 1.6 Z-Ol <14 1.9 <1.4 170 <l.l <l.l <4.5 6.2 2.5 51 SG-7 10/15/2019 160 29 24 51 <6.2 <1.3 <0.98 <15 2.9 <0.98 <0.82 <28 <0.82 <20 <6.9 59 1.9 Z-01 600 <0.85 <1.4 12 <1.1 <11 <4.5 2.3 <0.98 3.8 SG-8 10/15/2019 57 4.1 <0.44 2.7 <28 5.3 V-05 <20 <6.9 14 J <6.2 <1.3 <0.98 <15 <0.87 <0.98 12 <1 <14 <0.85 2.4 6.2 1.3 <l.l <4.5 1.2 <0.98 2.3 SG-9 10/15/2019 58 5.4 23 2.7 <28 6.6 V-05 3.8 J 0.99 J 11 J <6.2 <1.3 <0.98 <15 <0.87 <0.98 10 1.3 Z-01 <14 1.4 1.8 11 <1.1 1.3 1.3 J 2.2 <0.98 5.7 SG-9 DUP 10/15/2019 59 5.9 25 3 <28 6.7 V-05 4.2 J <6.9 11 J <6.2 <1.3 <0.98 <15 <0.87 <0.98 13 1.8 Z-01 160 1.5 1.7 12 1 <1.1 <1.1 1.3 J <0.98 <0.98 6.5 SG-10 10/15/2019 160 12 40 26 <6.2 <1.3 <0.98 <15 <0.87 <0.98 9 <28 <0.82 6.4 J <6.9 13 1.3 Z-01 390 4.6 <1.4 14 <1.1 <l.l 1 1.2 J 4.4 <0.98 <2.57 SC-11 10/15/2019 54 4.3 <0.44 1.9 <28 6.5 V-05 <20 <6.9 8 J <6.2 <1.3 1.5 9.8 J <0.87 <0.98 8 <1 <14 2.4 0.98 J 3.7 <1.1 <1.1 1.4 J <0.98 <0.98 2 SG-12 10/15/2019 140 2.4 <0.44 29 <6.2 0.45 J <0.98 38 1.1 <0.98 1.7 <28 <0.82 9.2 J <6.9 14 <1 <14 <0.85 0.87 J 4.1 <1.1 <1.1 1.4 J <0.98 <0.98 4.5 SG-13 10/15/2019 180 6.7 15 40 12 <1.3 <0.98 35 2.2 <0.98 <0.82 <28 <0.82 17 J <6.9 13 <1 170 <0.85 <1.4 9.7 <1.1 2.8 4.2 J 1.8 <0.98 7.3 SG-14 10/15/2019 120 6.8 18 21 J <6.2 <1.3 <0.98 13 J <0.87 <0.98 4.7 <28 <0.82 6.5 J <6.9 8 <1 <14 <0.85 3.1 7.2 <1.1 <1.1 <4.5 2.2 <14 72.57 SG-15 10/15/2019 87 12 <0.44 21 J <6.2 <1.3 <0.98 11 J 2.8 3.8 4.6 128 <0.82 2.8 J 16.9 18 2.9 Z-01 <14 3 <1.4 13 <1.1 <1.1 <4.5 5 1.3 11.9 SG-16 10/15/2019 25 1.5 <0.44 4.9 J <6.2 <1.3 <0.98 <15 <0.87 <0.98 0.66 J <28 <20 <20 <6.9 100 2.1 Z-01 <14 <0.85 5.2 2.3 <1.1 <11 1.4 J <0.98 <0.98 1.3 J Residential SGSL 220'000 120 14 35,000 4,900 160 41 NE 370 NE 2,800 4,900 210 1'400 4,200 21,000 21 3,130" 7,000 280 35,000 35,000 14 NE 420 420 700 Non -Residential SGSL 2,700,000 1 1,600 1 180 1 440,0001 61,000 1 2,000 1 530 1 NE 1 4,900 1 NE 1 35,000 1 61,000 1 2,600 1 18,000 1 53,000 260,000 260 13,10V 88,000 3,500 440,000 1,700 180 NE 5,300 5,300 8,800 Notes: Soil gas samples concentrations are reported in µg/m3. pg/m' - micrograms per cubic meter SGSL - Soil Gas Screening Levels - Sub Slab & Exterior Division of Waste Management (February 2018). Concentrations shown in BOLD exceed the laboratory detection limits. Concentrations shown in BOLD and highlighted fields exceed the Residential Soil Gas Screening Levels. J - Estimated concentration V-05 - Continuing calibration verification did not meet method specifications and was biased on the low side. Z-01 - Compound failed the method requirement recovery, for the LCS. Is classified by the laboratory as difficult compound and passes in teh house limits of 50 -150%. NE - Screening level not established for the compound and could not be calculated due to lack of volatility or toxicological information. . - SGSL for propene was calculated using the EPA Vapor Intrusion Screening Level Calculator, which assumed a Toxic Hazard Quotient (THQ) of 1. Z:18haredZME1Ops1ENVlProjeote12018W305-18-218A Rogers Fan B-afields Gonsuftiig 8erimsMorking_Dawment EMP - Re DeWopmemuQ-20 EMRTables for Addtl Assessment - 10-19.Asx V ' 1; �Z SG-4 ag/m3 SS-6 10 4 = • SS 5'� 1,3-BUTADIENE 34 m ,� 0* _ 1,3-BUTADIENE 31 �O� , :.'• SS 4/SG-5 SG=a6. . •+ o MW-9 ra, , SG-6 �9/m3 '�' 1,3-BUTADIENE 16 4y SG-9 Pg/m3 f s: i= EE_ � � ' r t:- y �. 1,3-BUTADIENE 23 yto SG-9-DUP W9/m3 "1 4 4"' z• ,► • SG 1b ,'`" 1,3-BUTADIENE 25 iTk Wg3 13 BUTADIENE 24 �FGL SG-7 F • ,ByI ti. !► C SG-10 Ig/m3 " ' 1,3-BUTADIENE 40 w ♦ SG-10 /Qo o f IV ON R >!z i. ONLY CONSTITUENTS WHICH EXCEED THEIR RESPECTIVE REGULATORY STANDARDS ARE SHOWN. MICROGRAMS PER CUBIC METER. ARSENIC WAS DETECTED IN SOIL AND SEDIMENT SAMPLES EXCEEDING THE REGULATORY STANDARD s AT CONCENTRATIONS SIMILAR TO BACKGROUND LEVELS. r Y REFERENCE: a GIS BASE LAYERS WERE OBTAINED FROM 2017 NCONEMAP.COM ORTHOIMAGERY BASE LAYER. THIS ± MAP IS FOR INFORMATIONAL PURPOSES ONLY. ALL FEATURE LOCATIONS DISPLAYED ARE APPROXIMATED. THEY ARE NOT BASED ON CIVIL SURVEY INFORMATION, UNLESS STATED 0 2OO 400 r �r 6 • OTHERWISE. (FEET) j • JV-IV 4.11{/I 1,3-BUTADIENE 18 ", 1,3-BUTADIENE 15 "I. W., N 00 O Q Co O o Q N U LU O Q re pV)O � w w 0 z z O 0 w m O � z < LL l7 N w J w < O af SCALE: TCE Contour (1999) 1 " = 200 ' Groundwater Sample (MW) Collected 10/7/2019 DATE: 11-7-19 �w Soil Gas (SG) Collected 10/14/2019 and 10/15/2019 PROJECT NUMBER Soil Sample (SS) Collected 10/15/2019 4305-18-216A _-•. Sediment Sample (SED) Collected 10/7/2019 FIGURE NO. ® Surface Water (SW) and Sediment Sample (SED) Collected 10/7/2019 3 4 ° Q Subject Parcel Boundary