REVISED REMEDIAL ACTION WORK PLAN SR-26-2119

Grant Number: 4B-00A00985

The Paddocks Project Pawtucket, Rhode Island

PREPARED FOR

Ms. Rachel Simpson Blackstone Valley Development Corp.

RIDEM Office of LR&SMM Mr. John Padien, CEO

235 Promenade Street 500 Prospect Street

Providence, RI 02908 Pawtucket, RI 02860

PREPARED BY

1 Cedar Street, Suite 400

Providence, RI 02903

401.272.8100

August 1, 2024

Remedial Action Work Plan i Table of Contents

Table of Contents

1 Introduction

2 Site Description and Overview

2.1 Location and Site Description

2.2 Environmental Setting

2.3 Site Operational History

3 Summary of Site Soil, Groundwater, and Soil Conditions

3.1 Soil

3.1.1 Soil Sampling within Lot 389 – June 2024

3.2 Groundwater

3.3 Soil Gas

4 Remedial Activities

4.1 Remedial Objectives (§ 1.10)

4.1.1 Soil

4.1.2 Groundwater

4.1.3 Air

4.1.4 Surface Water/Sediment

4.2 Proposed Remedy (§ 1.10.3)

4.3 Points of Compliance (§ 1.10.6)

4.4 Proposed Schedule (§ 1.10.7)

4.5 Contractors and/or Consultants (§ 1.10.8)

4.6 Design Standards and Technical Specifications (§ 1.10.10)

4.7 Soil Stockpile Management

4.8 Dust Control

4.9 Sedimentation and Erosion Control

4.10 Health and Safety Plan

4.11 Operating Log (§ 1.10.14)

4.12 Management of Remediation Waste

4.13 Security Procedures (§ 1.10.15)

4.14 Shutdown, Closure, and Post-Closure Requirements (§ 1.10.16)

4.15 Institutional Controls and Notices (§ 1.10.17)

4.16 Compliance Determination

5 Certification Statements

6 References

Remedial Action Work Plan ii Table of Contents

List of Tables

Table No. Description

Table 1 Soil Analytical Results

List of Figures

Figure No. Description

1 Project Location Map

2 Engineered Control Details

3 Sample Location Map

List of Appendices

Appendix Description

A Limitations

B Capping Details and Architectural Development Plans

C Draft ELUR and SMP

D Operating Log Template

E Laboratory Analytical Reports

F Boring Logs

1 Introduction

Introduction Vanasse Hangen Brustlin Inc. (VHB) has been retained by the Blackstone Valley Development Corporation (BVDC or referred to as the Client) via grant funding provided by the Rhode Island Department of Environmental Management (RIDEM) to prepare this Remedial Action Work Plan (RAWP) for the proposed residential redevelopment project referred to as The Paddocks Project at 651 Narragansett Park Drive in Pawtucket, Rhode Island, hereinafter referred to as “the Site.”

The Site comprises the entire parcel of land identified by the City of Pawtucket as AP 41B, Lot 381 as well as an approximate 1.5-acre area of the adjacent Lot 389 which has recently been purchased by the BVDC and added to The Paddocks Project development plans. This revised RAWP has been prepared to incorporate findings from a June 2024 limited subsurface investigation conducted within the Site addition. The Site consists of vacant commercial land. There are no structures on-Site, but the Site is primarily covered with deteriorated asphalt and vegetation (grasses, small trees, scrub brush). A natural gas subsurface utility runs north-south along the western Site boundary. No other utilities are known to be present at the Site. The RIDEM Office of Land Revitalization and Sustainable Materials Management (LRSMM) has assigned Site Remediation File No. SR-26-2119 to the Site.

This RAWP has been prepared in accordance with Section 1.10 of the Rhode Island Rules and

Regulations for the Investigation and Remediation of Hazardous Materials Releases (Remediation Regulations) to detail the remedy recommended in the Site Investigation Report (SIR) and approved by the RIDEM Office of LRSMM in a Program Letter dated October 10, 2023, relative to impacts to soils identified during previous Site investigation activities. As documented in the SIR, soil data indicated exceedances for arsenic and certain polycyclic aromatic hydrocarbons (PAHs) above the RIDEM Residential Direct Exposure (RDEC), and both arsenic and benzo(a)pyrene exceeded RIDEM Industrial/Commercial Direct Exposure Criteria (I/CDEC) as well as RDEC. Most samples exhibiting exceedances of arsenic and the PAHs were not spatially grouped; as such, soil impacts are expected to be present throughout Site as a result of historical use. Groundwater at the Site was not found to have exceedances of applicable GB Groundwater Objectives.

With consideration to future development plans, the SIR concluded that based on the findings, a combination of limited contaminated soil excavation/disposal, capping, and the

2 Introduction implementation of an Environmental Land Use Restriction (ELUR) is both an effective remedial alternative and one that is economically feasible for the BVDC (Site Owner).

The Paddocks Project is a residential development which will include a combination of 91 new residential units consisting of 2-, 3-, and 4-bedroom townhouses, single level units, and group home buildings providing over 300 beds and 137 parking spaces. This RAWP presents details for the remedial action to eliminate direct exposure to impacted soils via limited soil excavation, off-Site disposal and capping conducted concurrently with The Paddocks Project.

An ELUR which will include a Post-Construction Soil Management Plan (SMP), will be recorded by the BVDC.

VHB prepared a draft ELUR (refer to Section 4.15) on behalf of the Client. The draft ELUR proposes the following restrictions and requirements:

› Limited future use of the property;

› The engineered controls constructed at the Site are to remain in place and be maintained in good condition, as needed;

› RIDEM notification and appropriate soil compliance should future soil excavation/disturbances be required unless otherwise exempt; and

› Annual evaluation of the property and RIDEM reporting for ELUR compliance.

Implementation of the RAWP is proposed to commence concurrently with the redevelopment of the Site. This RAWP has been prepared on behalf of and for the exclusive use of the Client and for RIDEM. Limitations associated with this practice are included in Appendix A.

3 Site Description and Overview

Site Description and Overview

2.1 Location and Site Description

The proposed Paddocks Project is located at 651 Narragansett Park Drive in Pawtucket Rhode Island (“the Site”). The Site comprises the entirety of AP 41B, Lot 381 and an approximate 1.5-acre portion of adjacent Lot 389 and consists of vacant commercial land. A Site Location Plan is included as Figure 1. There are no structures on-Site, but the Site is primarily covered with deteriorated asphalt and vegetation (grasses, small trees, scrub brush). The Site usage has been consistent with vacant commercial land since the early 1980s.

2.2 Environmental Setting

The groundwater classification at the Site is classified as GB. The closest named surface water body is Ten Mile River, which is located approximately 2,400 feet east of the Site. According to the RIDEM Water Quality Regulations, Ten Mile River is a Class B1 water body. Class B1 waters are designated for primary and secondary contact recreational activities and fish and wildlife habitat. They shall be suitable for compatible industrial processes and cooling, hydropower, aquacultural uses, navigation, and irrigation and other agricultural uses. These waters shall have good aesthetic value. Primary contact recreational activities may be impacted due to pathogens from approved wastewater discharges. However, all Class B criteria must be met.

State-regulated Freshwater Wetlands, as defined in the Rules and Regulations Governing the Administration and Enforcement of the Freshwater Wetlands Act (Rules) [RIDEM, 2007 as amended] are not present within the Site based on the RIDEM Environmental Resource Map (ERM). Based on the ERM, the closest surface water body is Ten Mile River located approximately 2,400 feet east of the Site According to the Flood Insurance Rate Map (“FIRM”) for the city of Pawtucket, Rhode Island dated October 2, 2015 (Map Number 44007C0326J) the Site is located within Zone X, defined as an area of minimal flood hazard.

There are no freshwater wetland resources nor coastal wetland resources within the Site per the RIDEM ERM.

4 Site Description and Overview

2.3 Site Operational History

The Site is located in a primarily residential, commercial, and to a lesser extent, industrial area in Pawtucket, Rhode Island. The Site is surrounded by residential areas to the north and west, industrial properties to the east, and commercial properties to the south.

Historically, the Site was developed as parking lot associated with the Narragansett Racetrack, which was established no later than 1939. The Site and surrounding areas were redeveloped as an industrial park in the early 1980s. The Site appears to have consistently been used as vehicle parking from 1939 until 1981 and has not historically been developed with any buildings. Since the development of the Narragansett Industrial Park in the early 1980s, the Site usage has been consistent with vacant commercial land.

5 Summary of Site Soil and Groundwater Conditions

Summary of Site Soil, Groundwater, and Soil

Conditions Site Investigation activities in accordance with the Remediation Regulations have been completed at the Site by VHB. The following sections further outline the constituents of concern identified in soil at the Site.

3.1 Soil

Soil data collected and summarized in the September 2023 SIR, indicated exceedances for arsenic, benzo(a)anthracene, benzo(a)pyrene, benzo(a)anthracene, benzo(b)fluoranthene, benzo(g,h,i)perylene, benzo(k)fluoranthene, chrysene, indeno(1,2,3-cd)pyrene, pyrene above the RIDEM RDEC, and both arsenic and benzo(a)pyrene also exceeded the RIDEM I/CDEC.

Soil data collected in June 2024 within the portion of lot 389 recently added to the Site found RDEC and I/CDEC exceedances of generally the same group of PAHs, and arsenic. A summary of the subsurface investigation is provided below.

Most samples exhibiting exceedances of arsenic and PAHs were not spatially grouped; as such, soil impacts are expected to be present throughout Site soils as a result of historical use.

3.1.1 Soil Sampling within Lot 389 – June 2024

VHB completed four (4) soil borings on June 24, 2024, to facilitate soil sampling across the Site addition via direct-push methodologies, as shown on Figure 2. In general, soil boring locations were chosen to acquire representative soil data across the Site addition to further delineate contamination. VHB collected soil samples from 0 – 2.5 feet, 2.5 – 5 feet in all borings, and from 7.5 – 10 feet for two (2) boring to assess the vertical extent of any potential exceedances. The samples were evaluated, field screened and sampled for metals, PAHs, volatile organic compounds (VOCs), semi volatile organic compounds, pesticides, herbicides, total petroleum hydrocarbons (TPH), and polychlorinated biphenyls (PCBs). Soil generated during the boring installations was placed back into the hole from which it was generated.

A total of ten (10) grab soil samples were submitted for laboratory analysis in June 2024.

Additionally, for evaluation of potential future soil disposal options, soil from the 4 borings

6 Summary of Site Soil and Groundwater Conditions was also composited into one soil composite sample, VHB-COMP-D, and analyzed for disposal pre-characterization parameters. Since future intrusive activities (e.g., soil excavation) during Site redevelopment is likely to only go down to 5-feet below grade, only the top 5 feet of soil was composited. The composite was analyzed for the same parameters as the individual soil samples, with the addition of pH and particle size. A duplicate sample of VHB-COMP-D, labeled VHB-DUP, was also submitted to the lab for analysis for the same disposal pre-characterization parameters, except for particle size. All soil results are summarized in Table 1 and the sample locations are shown on Figure 3.

It should be noted that the duplicate data reported by the lab for VHB-DUP correlated generally well with the reported results for the sample location that was duplicated (VHB- COMP-D) with the exception of the PAH compounds which were all generally higher in VHB- COMP-D. VHB requested that the lab physically examine the samples and the lab indicated that there was some minor evidence of asphalt in the VHB-COMP-D sample soil jar submitted for analysis, and said asphalt may have resulted in higher than anticipated PAH concentrations.

During advancement of the soil borings, a VHB representative observed and documented soil conditions. Soil boring logs are included in Appendix F.

None of the samples triggered the TCLP test, which is when elevated concentrations of metals are further analyzed in general accordance with the Environmental Protection Agency (EPA) 20:1 ratio for TCLP analysis (i.e., samples exceeding 100 mg/kg for lead would be run for TCLP).

Concentrations of PAHs, and Arsenic in Site soils were reported in exceedance of the RDEC and I/CDEC. Specifically, the soil composite data exceeded Arsenic RDEC and I/CDEC. Most of the individual soil sample concentrations also exceeded the Arsenic RDEC and I/CDEC.

Results from VHB-14(0-1.5’), VHB-15(2-4’), and VHB-COMP-D exceeded the RDEC for Benzo(a)anthracene, Benzo(a)pyrene, Benzo(b)fluoranthene, Benzo(g,h,i)perylene, Chrysene, and Indeno(1,2,3-cd)pyrene. Benzo(a)pyrene also exceeded I/CDEC in these samples.

Additionally, VHB-14 exceeded the RDEC for Dibenzo(a,h)anthracene and Benzo(k)fluoranthene RDEC. The laboratory analytical reports are provided in Appendix E.

3.2 Groundwater

The results of groundwater sampling associated with the September 2023 SIR did not indicate any concentrations above the applicable GB Groundwater Objectives set forth in the Remediation Regulations.

Since groundwater is not considered a media of concern at the Site, additional monitoring wells and groundwater sampling were not deemed necessary during the June 2024 investigation.

3.3 Soil Gas

Soil gas samples were not collected as part of the SIR but based upon the soil field screening and groundwater sampling results, soil gas is not considered a media of concern at the Site.

7 Remedial Activities

Remedial Activities As detailed in Section 1.10 of the Remediation Regulations, this work plan describes the remedial actions required under these regulations.

4.1 Remedial Objectives (§ 1.10)

The remedial objective for this Site, as recommended in the SIR and approved by the RIDEM Office of LRSMM, is to reduce possible direct exposure to impacts soils via limited soil excavation, capping, and institutional controls. Remediation and the implementation of institutional controls will be conducted concurrently with Project construction expected to begin at a later date in 2024.

In accordance with Section 1.10 of the Remediation Regulations, this section addresses remedial objectives for all potentially impacted media (soil, groundwater, surface water, air, and sediment) for the Site. Remedial objectives for each of the media prescribed by the regulations are discussed below, as applicable.

4.1.1 Soil

The remedial objective for soil is to reduce possible direct exposure to impacted soils and entrainment through wind and runoff via limited excavation, capping, and institutional controls. Exceedances of the RIDEM RDEC and/or the I/CDEC were detected in various locations across the Site. Soils disturbed during construction and considered contaminated based on exceedances of applicable RIDEM Method 1 Criteria, which are not reinterred under a RIDEM-approved cap, will be disposed off-Site at a licensed facility. The horizontal extent of the capping will vary depending on the reconstruction proposed for the specified area and will generally be dependent on depths of construction, unless directed otherwise.

Some areas will be excavated and/or regraded prior to capping to achieve the design grade and some areas will likely be capped directly or filled, depending on existing and proposed grades. Some impacted soils from those areas requiring excavation may be transferred to other regulated areas of the Site that require filling to raise the existing grade prior to capping.

Since contaminated soil will be left in place beneath the cap, an ELUR will be required for the Site. The ELUR will require that engineered controls remain in place and any soil disturbed

8 Remedial Activities post-remediation be managed in accordance with a RIDEM-approved Soil Management Plan

(SMP).

4.1.2 Groundwater

Groundwater assessment conducted as part of subsurface investigations at the Site did not identify any contaminants in groundwater present at levels above the applicable GB Groundwater Objectives established in the Remediation Regulations. Therefore, no remedial activities are required or proposed for groundwater in this RAWP.

4.1.3 Air

Soil and groundwater assessment conducted as part of the subsurface investigations at the Site did not identify any conditions indicative of potential soil vapor or indoor air concerns.

Therefore, no remedial activities are required or proposed for soi gas or indoor air in this RAWP. However, dust control measures will be required during construction and earthwork activities. Refer to the dust control subsection (Section 4.8) below for information pertaining to fugitive dust issues.

4.1.4 Surface Water/Sediment

Surface water runoff and erosion controls will be implemented during project construction (refer to section 4.7 below), but since the nearest water body is 2,400 feet east of the Site, there are no potential adverse impacts to surface water or sediments.

4.2 Proposed Remedy (§ 1.10.3)

Remedial actions will be conducted concurrently with Site redevelopment from vacant land to The Paddocks Project. The remedial action will consist of a combination of soil excavation and off-Site disposal, encapsulation of soil via engineered barriers to eliminate direct exposure, and implementation of an ELUR.

The following minimum encapsulation methods, depicted on Figure 2, and shown on the architect’s development plans provided in Appendix B, are proposed for the Site.

1) A minimum of two (2) feet of clean, imported fill;

2) A minimum of twelve (12) inches of clean, imported fill underlain with a geotextile fabric;

3) A minimum of four (4) inches of pavement (asphalt or concrete) above a minimum of six (6) inches of a clean, imported gravel fill subbase material;

4) Building foundations or other permanent site structures; and

5) Existing pavement of good integrity in areas not proposed for redevelopment, if any.

Since impacted soil will be left in place and restricted with a cap, an ELUR will be required for the Site. An ELUR is a legal document drafted for the purpose of placing a notice of restrictions on the use or physical condition of a property for the protection of human

9 Remedial Activities health. The ELUR will require that the capped portions of the property remain in place and any soil disturbed post-remediation will be managed in accordance with a RIDEM approved Soil Management Plan (SMP). A copy of the draft ELUR for this property is included in Appendix C.

Upon completion of The Paddocks redevelopment project and RIDEM approval of a Remedial Action Closure Report (RACR, refer to Section 4.14), the ELUR will be recorded by the BVDC in the Pawtucket Land Evidence Records.

The proposed remedy will meet the remedial objectives as follows:

1) The use of a cap will prevent migration of contaminated soil by eliminating impacted exposure to wind;

2) The use of the cap will physically prevent direct contact with impacted soil;

3) The cap will prevent entrainment of contaminants through wind and rain; and

4) Surface runoff will be controlled through the use of erosion controls during construction as described herein.

4.3 Points of Compliance (§ 1.10.6)

During Site construction activities, an Environmental Professional (EP) will monitor construction on a part-time periodic basis to document that the proposed remedy is being implemented and the engineered controls are being properly constructed in accordance with the RAWP.

Proper soil and stockpile management (i.e., application of water, covering by polyethylene sheeting, etc.), erosion controls, certification of clean fill via laboratory analysis prior to Site import, characterization and disposal of excess impacted soil, and CAP/fence installation will be supported and documented in a RACR, to be prepared by VHB, by Operations Logs, laboratory reports, transportation records, soil disposal paperwork, laboratory reports, progress photographs, field measurements, etc.

Subsequently, on an annual basis, the area subject to the ELUR, which includes the engineered barrier, will be inspected and documented by an EP to identify areas in need of maintenance/repairs, and evaluated to ensure that all property restrictions are being adhered to. The annual inspection will be documented in a written report with an Annual Compliance Evaluation Form.

4.4 Proposed Schedule (§ 1.10.7)

The proposed Site remedy consists of soil excavation and disposal, soil encapsulation via the installation of engineered barriers, and implementation of an ELUR across the Site. The remedial actions will be completed concurrently with Site construction, which is proposed to start in the Fall of 2024.

The Remedial Action Closure Report, which will include an updated draft ELUR and SMP if needed, will be submitted within 30 days following the completion of the remedial action.

10 Remedial Activities

The ELUR and SMP will be finalized by VHB within 2-weeks following the approval by RIDEM Office of LRSMM and will be recorded by the BVDC in the City of Pawtucket Land Evidence Records. A recorded copy of the ELUR will then be forwarded to RIDEM Office of LRSMM within 15 days of filing.

4.5 Contractors and/or Consultants (§ 1.10.8)

The BVDC’s construction contractor for the Project has not yet been selected. VHB will serve as the BVDC’s EP/Consultant and will conduct periodic, part-time monitoring once construction begins to document proper implementation of the RAWP, the associated soil management activities, and the installation of the engineered barriers.

4.6 Design Standards and Technical Specifications (§ 1.10.10) The following minimum encapsulation methods, depicted on Figure 2, are proposed for the Site:

➢ A minimum of two (2) feet of clean, imported fill;

➢ A minimum of twelve (12) inches of clean, imported fill underlain with a geotextile fabric;

➢ A minimum of four (4) inches of pavement (asphalt or concrete) above a minimum of six (6) inches of a clean, imported fill subbase material;

➢ Building foundations or other permanent structures; or

➢ Existing pavement of good integrity in areas not proposed for redevelopment, if any.

In areas where a geotextile fabric will be used as part of the engineered barrier/cap, the fabric will possess the following specifications applicable to geotextiles:

Property Minimum Value

1. Grab Tensile Strength 160 lbs

2. Water Flow 105 gpm/ft2

3. Grab Elongation 50%

All soil imported to the Site for construction of the cap (including, but not limited to, loam, common borrow, gravel borrow, etc.) will meet RDEC or will be certified to be non-jurisdictional. Clean fill and loam proposed to be used at the Site will be sampled and approved prior to importation to the Site. Clean fill and imported soil will be sampled for arsenic at a frequency of one sample per 500 cubic yards. One-quarter of the total number of clean fill samples (i.e., one sample per 2,000 cubic yards) will be sampled for Volatile Organic Compounds (VOCs), Polycyclic Aromatic Hydrocarbons (PAHs), Total Metals (PP13), polychlorinated biphenyls (PCBs), and Total Petroleum Hydrocarbons (TPH).

Non-soil materials such as rock, stone, and stone dust imported to the Site, if any, do not need to be sampled for certification purposes.

11 Remedial Activities

4.7 Soil Stockpile Management

Temporary stockpiling of Site soil may be necessary for work to be conducted at the Site.

The locations of temporary stockpiles will be at the discretion of the contractor. All excavated material which requires stockpiling, as detailed in previous sections, will be temporarily stockpiled on top of 6-milimeter (6-mil) polyethylene sheeting and covered with 6-mil polyethylene sheeting in a contractor-designated stockpile area on Site unless the underlying soils are also considered jurisdictional. The stockpiles will be covered whenever there is no active excavation being conducted. Any clean fill imported to the Site should be stockpiled on polyethylene sheeting to prevent comingling with any underlying jurisdictional soils and adequately separated from stockpiles of contaminated soils to prevent the same.

4.8 Dust Control

All reasonable precautions will be taken to prevent the excessive generation of dust during soil excavation, stockpiling, loading, and other soil handling activities. Work at the Site must comply with all applicable federal, state, and local regulations, including the RIDEM Air Pollution Control Regulations, and specifically Regulation No. 5 regarding control of fugitive dust. Dust control measures must be implemented as required, to prevent airborne particulate matter from leaving the Site at all times. Dust control measures (such as wetting soils or the application of calcium chloride) shall be implemented on an as needed basis (i.e., visual evidence of airborne dust) throughout the Project. All stockpiles shall be inspected on a regular basis to ensure compliance with RIDEM Air Pollution Control Regulations. VHB will conduct periodic Site visits to ensure dust control measures are being implemented if necessary. This information will then be recorded in the Operating Logs.

4.9 Sedimentation and Erosion Control

Prior to the start of excavation activities, sediment and erosion controls, consisting of compost filter socks, silt fencing, or other equivalent methods proposed by the construction contractor will be installed at the Site as applicable. A stabilized construction entrance will be installed, if needed (e.g., at an entrance to a materials/soils staging area), or other means to reduce the tracking of soils into the area roadways will be implemented by the contractor, if required, in accordance with Project specifications.

4.10 Health and Safety Plan

A Health and Safety Plan will be developed by the contractor, or their environmental sub-consultant, for implementation with consideration to OSHA regulations prior to the start of the Project.

4.11 Operating Log (§ 1.10.14)

An Operating Log that conforms with the requirements of Section 1.10.14 of the Remediation Regulations will be completed and maintained on days and at times when VHB is performing on-Site contractor monitoring. The Operating Logs will detail information such

12 Remedial Activities as thickness, composition, and location of the cap and will also document earthwork activities and monitoring to ensure that the appropriate regulations are complied with. A copy of the Operating Log template is included as Appendix D. Copies of the Operating Logs should be readily available at the Site during construction. The BVDC will keep a copy of the Operating Logs for a minimum of three years following completion of the remedy. All information recorded in the Operating Logs will be summarized in a RACR submitted to the RIDEM Office of LRSMM, following the completion of remediation and redevelopment activities.

4.12 Management of Remediation Waste

Any remediation waste generated will be managed in accordance with state and federal requirements and disposal documentation will be provided to the RIDEM Office of LRSMM. If excess Site soil is generated, the material will be sampled for the appropriate disposal parameters in accordance with the receiving facility and disposed off-Site at said licensed facility. Copies of disposal paperwork (e.g., weight slips) will be included in the RACR.

4.13 Security Procedures (§ 1.10.15)

Security will be addressed by the utilization of fencing or other methods by the Site contractor to prevent unauthorized access to the Site. Any open excavations will also be secured at the conclusion of each workday, using methods such as backfilling open excavation areas, placing road plates over areas that have not been backfilled, etc. Access to any fenced off areas will be controlled by the use of a gate. The fence gate will be secured at the conclusion of each workday during construction by authorized personnel.

4.14 Shutdown, Closure, and Post-Closure Requirements (§

1.10.16) Upon completion of the Project, a RACR will be submitted to the RIDEM Office of LRSMM summarizing all RAWP compliance related activities that were completed. The report will also include an anticipated schedule for yearly cap inspection. Any specific maintenance necessary to repair or maintain the cap will also be noted if applicable.

4.15 Institutional Controls and Notices (§ 1.10.17)

The ELUR and SMP will be finalized by the BVDC following the approval by the RIDEM Office of LRSMM and will be recorded for the applicable portion of the property in the City of Pawtucket Land Evidence Records. A recorded copy of the ELUR will be forwarded to the RIDEM Office of LRSMM by the Responsible Party. A copy of the draft ELUR and SMP are attached as Appendix C.

13 Remedial Activities

4.16 Compliance Determination

Successful completion of the Site capping activities documented in the Operating Logs, along with field measurements, photo-documentation, soil disposal weight slips will be used to demonstrate compliance with the work plan. All information associated with these actions will be submitted to the RIDEM Office of LRSMM as required.

Certification Statements VHB submits the following statements of certification:

Certification by Preparer:

Vanasse hlangen Brustlin, Inc. has prepared this RAWP for contaminated soil for The

Paddocks Project in accordance with the requirements of Section 1.10 ofthe Remediation

Regulations and certifies the accuracy of the information contained in the report to the best of our knowledge and has approved the design standards and technical specifications included herein.

Qt^UA--USLVO 7/19/24

Prepared by: PeterGrivers, P.E.

Remediation Team Leader

Date

Certification by Owner/Operator

I, John Padien, CEO of the BVDC, certify that the information contained in this report is a complete and accurate representation ofthe conditions at The Paddocks Project and the proposed remedial activities to the best of my knowledge.

July 19,2024 ire of Owne

John Padien erator Representative Date

Chief Executive Officer

Printed Name Title

14 Certification Statements jharriott Text Box 8/01/2024 jharriott Text Box August 1, 2024

15 References

References Rhode Island Department of Environmental Management Environmental Resources Map, accessed January 2022.

Rhode Island Department of Environmental Management Groundwater Classification and Well Head Protection Area Map, 2022.

Rhode Island Department of Environmental Management Rules and Regulations for

Groundwater Quality, June 2010.

Rhode Island Department of Environmental Management Rules and Regulations for the

Investigation and Remediation of Hazardous Material Releases, recodified January 2019.

Rhode Island Department of Environmental Management Water Quality Regulations, December 2010.

BVDC, Hazardous Material Release Notification, November 18, 2022.

U.S. Department of Agriculture Web Soil Survey, January 2022.

Vanasse Hangen Brustlin, Inc., Site Investigation Report (SIR), prepared by VHB, dated September 22, 2023.

BVDC Paddock Proposed Site Plan, Saccoccio & Associates Architects, provided to VHB by the BVDC on November 28, 2023.

Figures

Figures

Figure 1: Site Location and Local Area Map Vacant Property | 651 Narragansett Park Drive

Site Parcel Boundary Tax Parcels (Zoom in to view)

Pa th

\v hb .c om \g is\ pr oj \W at -E

V\

1.0

RI

D

EM

-P aw tB

VD

C- Ph

Co m p\

Pr oj ec t\

Si te

-S pe ci fic

Q

AP

P\

RI

D

EM

P aw tB

VD

C Q

AP

P\

RI

D

EM

P aw tB

VD

C

Q

AP

P.a pr x (U se r:

Source: USGS Topo Map, Rhode Island Spring 2022 Aerial Imagery

0 2,500 5,000 7,500 US Feet N

Copyright:© 2013 National Geographic Society, i-cubed

NARRAGANSETT PARK DR

GILL AVE

BEVERAGE HILL RD

SEA

BISCUIT PL

WHIRLAWAY PL

LA

N

G D

O N

A

VE

RI State, 37 Towns 0 500 1,000 US Feet

Figure 2: Engineered Control Details

Option 2 - Minimum of 12 inches of clean, imported fill underlain with a geotextile fabric

Geotextile fabric

Subsurface soil

Minimum of 12 inches of clean, imported fill

Option 3 - Minimum 4 inches of pavement (asphalt or concrete) underlain with minimum of 6 inches of clean, imported fill

Minimum 4 inches of new pavement (asphalt or concrete) Minimum 6 inches of clean imported base material

Subsurface soil

Option 1 - 2 feet clean fill

Subsurface soil

Minimum of 2 feet of clean, imported fill

Option 4 - Building Foundation

Subsurface soil

Building Foundation or Other Surface Structure

Pa th

\v hb .c om \g is\ pr oj \W at -E

V\

1.0

RI

D

EM

-P aw tB

VD

C- Ph

Co m p\

Pr oj ec t\

Si te

-S pe ci fic

Q

AP

P\

RI

D

EM

P aw tB

VD

C Q

AP

P\

RI

D

EM

P aw tB

VD

C

Q

AP

P.a pr x (U se r:

0 250 500 US Feet N

Vacant Property | 651 Narragansett Park Drive Figure 3: Sample Location Plan

@A

@A

@A

!A !A

!A

!A

!A !A

!A

!A !A

!A

!A !A

!A

NARRAGANSETT PARK DR

W A

R A

D M

IR

A

L

PL

BEVERAGE HILL RD

WHIRLAWAY PL

VHB-4-MW

VHB-5-MW

VHB-10-MW

VHB-1 VHB-2

VHB-3

VHB-6

VHB-7

VHB-8

VHB-9

VHB-11 VHB-12

VHB-13

VHB-14

VHB-15

VHB-16

RI State, 37 Towns

Source: RI Roads, Rhode Island Spring 2022 Imagery

Tax Parcels

Site Parcel Boundary

Site Addition

Former Monitoring Well Locations@A

Previous Soil Boring Locations!A

Additional Soil Boring Locations!A

Groundwater Flow Direction

Tables

Tables

Table 1 Summary of Soil Analytical Results

Vacant Commercial Property 651 Narrangansett Park Drive, Pawtucket, Rhode Island

Sample ID Sample Depth Lab Sample Designation Sample Date

Parameter Sample Result

Reporting Limit

Sample Result

Reporting Limit

Sample Result

Reporting Limit

Sample Result

Reporting Limit

General Chemistry pH SU

Herbicides Dalapon ug/kg ND 102 ND 108 ND 105 ND 105 Dicamba ug/kg ND 51 ND 54 ND 52 ND 53 Dichloroprop ug/kg ND 51 ND 54 ND 52 ND 53 2,4-D ug/kg ND 51 ND 54 ND 52 ND 53 2,4,5-TP (Silvex) ug/kg ND 51 ND 54 ND 52 ND 53 2,4,5-T ug/kg ND 51 ND 54 ND 52 ND 53 2,4-DB ug/kg ND 51 ND 54 ND 52 ND 53 Dinoseb ug/kg ND 102 ND 108 ND 105 ND 105

Pesticides alpha-BHC ug/kg ND 1.72 ND 1.79 ND 1.69 ND 1.74 gamma-BHC (Lindane) ug/kg ND 1.72 ND 1.79 ND 1.69 ND 1.74 beta-BHC ug/kg ND 1.72 ND 1.79 ND 1.69 ND 1.74 delta-BHC ug/kg ND 1.72 ND 1.79 ND 1.69 ND 1.74 Heptachlor ug/kg ND 1.72 ND 1.79 ND 1.69 ND 1.74 Aldrin ug/kg ND 1.72 ND 1.79 ND 1.69 ND 1.74 Heptachlor epoxide ug/kg ND 1.72 ND 1.79 ND 1.69 ND 1.74 gamma-Chlordane see Chlordane see Chlordane see Chlordane ug/kg ND 1.72 ND 1.79 ND 1.69 ND 1.74 alpha-Chlordane see Chlordane see Chlordane see Chlordane ug/kg ND 1.72 ND 1.79 ND 1.69 ND 1.74 Chlordane 500 4400 10000 ug/kg ND 17.2 ND 17.9 ND 16.9 ND 17.4 4,4’-DDE ug/kg ND 3.44 ND 3.56 ND 3.37 ND 3.46 Endosulfan I ug/kg ND 1.72 ND 1.79 ND 1.69 ND 1.74 Dieldrin 40 400 ug/kg ND 1.72 ND 1.79 ND 1.69 ND 1.74 Endrin ug/kg ND 1.72 ND 1.79 ND 1.69 ND 1.74 4,4’-DDD ug/kg ND 3.44 ND 3.56 ND 3.37 ND 3.46 Endosulfan II ug/kg ND 1.72 ND 1.79 ND 1.69 ND 1.74 Endrin aldehyde ug/kg ND 1.72 ND 1.79 ND 1.69 ND 1.74 4,4’-DDT ug/kg ND 3.44 ND 3.56 ND 3.37 ND 3.46 Methoxychlor ug/kg ND 3.44 ND 3.56 ND 3.37 ND 3.46 Endosulfan sulfate ug/kg ND 1.72 ND 1.79 ND 1.69 ND 1.74 Endrin Ketone ug/kg ND 1.72 ND 1.79 ND 1.69 ND 1.74 Endosulfan (I & II) ug/kg ND 1.72 ND 1.79 ND 1.69 ND 1.74 Toxaphene ug/kg ND 17.2 ND 17.9 ND 16.9 ND 17.4

Polychlorinated Biphenyls (PCBs) Aroclor-1016 see PCBs (Total) see PCBs (Total) see PCBs (Total) ug/kg ND 68 ND 71 ND 67 ND 69 Aroclor-1221 see PCBs (Total) see PCBs (Total) see PCBs (Total) ug/kg ND 68 ND 71 ND 67 ND 69 Aroclor-1232 see PCBs (Total) see PCBs (Total) see PCBs (Total) ug/kg ND 68 ND 71 ND 67 ND 69 Aroclor-1242 see PCBs (Total) see PCBs (Total) see PCBs (Total) ug/kg ND 68 ND 71 ND 67 ND 69 Aroclor-1248 see PCBs (Total) see PCBs (Total) see PCBs (Total) ug/kg ND 68 ND 71 ND 67 ND 69 Aroclor-1254 see PCBs (Total) see PCBs (Total) see PCBs (Total) ug/kg ND 68 ND 71 ND 67 ND 69 Aroclor-1260 see PCBs (Total) see PCBs (Total) see PCBs (Total) ug/kg ND 68 ND 71 ND 67 ND 69 Aroclor-1262 see PCBs (Total) see PCBs (Total) see PCBs (Total) ug/kg ND 68 ND 71 ND 67 ND 69 Aroclor-1268 see PCBs (Total) see PCBs (Total) see PCBs (Total) ug/kg ND 68 ND 71 ND 67 ND 69 PCBs (Total) 10000 10000 ug/kg ND 68 ND 71 ND 67 ND 69

Semivolatile organic compounds 1,2,4-Trichlorobenzene 96000 1.00E+07 ug/kg ND 136 ND 142 ND 274 ND 139 1,2-Dichlorobenzene 510000 1.00E+07 ug/kg ND 136 ND 142 ND 274 ND 139 1,3-Dichlorobenzene 430000 1.00E+07 ug/kg ND 136 ND 142 ND 274 ND 139 1,4-Dichlorobenzene 27000 240000 ug/kg ND 136 ND 142 ND 274 ND 139 Phenol 6000000 1.00E+07 ug/kg ND 136 ND 142 ND 274 ND 139 2,4,5-Trichlorophenol 330000 1.00E+07 ug/kg ND 136 ND 142 ND 274 ND 139 2,4,6-Trichlorophenol 58000 520000 ug/kg ND 136 ND 142 ND 274 ND 139 2,4-Dichlorophenol 30000 6100000 ug/kg ND 136 ND 142 ND 274 ND 139 2,4-Dimethylphenol 1400000 1.00E+07 ug/kg ND 344 ND 361 ND 696 ND 354 2,4-Dinitrophenol 160000 4100000 ug/kg ND 344 ND 361 ND 696 ND 354 2,4-Dinitrotoluene 900 8400 ug/kg ND 136 ND 142 ND 274 ND 139 2,6-Dinitrotoluene ug/kg ND 136 ND 142 ND 274 ND 139 2-Chloronaphthalene ug/kg ND 136 ND 142 ND 274 ND 139 2-Chlorophenol 50000 1.00E+07 ug/kg ND 136 ND 142 ND 274 ND 139 2-Methylnaphthalene 123000 1.00E+07 ug/kg ND 136 ND 142 ND 274 ND 139 Nitrobenzene ug/kg ND 136 ND 142 ND 274 ND 139 2-Methylphenol ug/kg ND 136 ND 142 ND 274 ND 139 2-Nitroaniline ug/kg ND 136 ND 142 ND 274 ND 139 2-Nitrophenol ug/kg ND 344 ND 361 ND 696 ND 354 3,3’-Dichlorobenzidine 1400 13000 ug/kg ND 344 ND 361 ND 696 ND 354 3-Nitroaniline ug/kg ND 136 ND 142 ND 274 ND 139 4,6-Dinitro-2-methylphenol ug/kg ND 344 ND 361 ND 696 ND 354 4-Bromophenyl phenyl ether ug/kg ND 136 ND 142 ND 274 ND 139 4-Chloro-3-methylphenol ug/kg ND 136 ND 142 ND 274 ND 139 4-Chloroaniline 310000 8200000 ug/kg ND 136 ND 142 ND 274 ND 139 4-Chlorophenyl phenyl ether ug/kg ND 136 ND 142 ND 274 ND 139 4-Nitroaniline ug/kg ND 136 ND 142 ND 274 ND 139 4-Nitrophenol ug/kg ND 344 ND 361 ND 696 ND 354 Acenaphthene 43000 1.00E+07 ug/kg ND 136 ND 142 ND 274 ND 139 Acenaphthylene 23000 1.00E+07 ug/kg ND 136 ND 142 ND 274 ND 139 Aniline ug/kg ND 136 ND 142 ND 274 ND 139 Anthracene 35000 1.00E+07 ug/kg ND 136 ND 142 561 274 ND 139 Benzo(a)anthracene 900 7800 ug/kg ND 136 ND 142 3050 274 ND 139 Benzo(a)pyrene 400 800 ug/kg ND 136 ND 142 2830 274 ND 139 Benzo(b)fluoranthene 900 7800 ug/kg ND 136 ND 142 3750 274 ND 139 Benzo(g,h,i)perylene 800 1.00E+07 ug/kg ND 136 ND 142 1890 274 ND 139 Benzo(k)fluoranthene 900 78000 ug/kg ND 136 ND 142 1560 274 ND 139 Benzoic acid ug/kg ND 1040 ND 1090 ND 2110 ND 1070 Biphenyl 800 1.00E+07 ug/kg ND 21 ND 22 ND 42 ND 21 Bis(2-chloroethoxy)methane ug/kg ND 136 ND 142 ND 274 ND 139 Bis(2-chloroethyl)ether 600 5200 ug/kg ND 136 ND 142 ND 274 ND 139 Bis(2-chloroisopropyl)ether 9100 82000 ug/kg ND 136 ND 142 ND 274 ND 139 Bis(2-ethylhexyl)phthalate 46000 410000 ug/kg ND 417 ND 438 ND 844 ND 429 Butyl benzyl phthalate ug/kg ND 136 ND 142 ND 274 ND 139 Chrysene 400 780000 ug/kg ND 136 ND 142 2880 274 ND 139 Di-n-octyl phthalate ug/kg ND 209 ND 219 ND 422 ND 214 Dibenz(a,h)anthracene 400 800 ug/kg ND 136 ND 142 492 274 ND 139 Dibenzofuran ug/kg ND 136 ND 142 ND 274 ND 139 Diethyl phthalate 340000 1.00E+07 ug/kg ND 136 ND 142 ND 274 ND 139 Dimethyl phthalate 1900000 1.00E+07 ug/kg ND 344 ND 361 ND 696 ND 354 Di-n-butyl phthalate ug/kg ND 209 ND 219 ND 422 ND 214 Fluoranthene 20000 1.00E+07 ug/kg ND 136 ND 142 4650 274 190 139 Fluorene 28000 1.00E+07 ug/kg ND 136 ND 142 ND 274 ND 139 Hexachlorobenzene 400 3600 ug/kg ND 136 ND 142 ND 274 ND 139 Hexachlorobutadiene 8200 73000 ug/kg ND 136 ND 142 ND 274 ND 139 Hexachlorocyclopentadiene ug/kg ND 344 ND 361 ND 696 ND 354 Hexachloroethane 46000 410000 ug/kg ND 136 ND 142 ND 274 ND 139 Indeno(1,2,3-cd)pyrene 900 7800 ug/kg ND 136 ND 142 1900 274 ND 139 Isophorone ug/kg ND 136 ND 142 ND 274 ND 139 Naphthalene 54000 1.00E+07 ug/kg ND 136 ND 142 ND 274 ND 139 N-Nitrosodimethylamine ug/kg ND 136 ND 142 ND 274 ND 139 N-Nitrosodi-n-propylamine ug/kg ND 136 ND 142 ND 274 ND 139 N-Nitrosodiphenylamine ug/kg ND 136 ND 142 ND 274 ND 139 Pentachlorophenol 5300 48000 ug/kg ND 344 ND 361 ND 696 ND 354 Phenanthrene 40000 1.00E+07 ug/kg ND 136 ND 142 2210 274 145 139 Pyrene 13000 1.00E+07 ug/kg ND 136 ND 142 4210 274 148 139 m&p-Cresol ug/kg ND 271 ND 285 ND 549 ND 279 Pyridine ug/kg ND 136 ND 142 ND 274 ND 139 Azobenzene ug/kg ND 136 ND 142 ND 274 ND 139 Total Dichlorobenzene ug/kg ND 136 ND 142 ND 274 ND 139

RIDEM Method 1 Industrial/Commercial Direct

Exposure Criteria

RIDEM Method 1 Residential Direct Exposure Criteria

RIDEM Method 1 GB Leachability Criteria

Units 6/24/2024 8:50

VHB-16 (1.5-3')

4F24029-02 6/24/2024 8:55

VHB-14 (0-1.5')

4F24029-03 6/24/2024 9:25

0-1.5' 1.5-3' 0-1.5'

VHB-16 (0-1.5')

4F24029-01

VHB-14 (1.5-3')

4F24029-04 6/24/2024 9:30

1.5-3'

Vacant Commercial Property 651 Narrangansett Park Drive, Pawtucket, Rhode Island

Sample ID Sample Depth Lab Sample Designation Sample Date

Parameter Sample Result

Reporting Limit

Sample Result

Reporting Limit

Sample Result

Reporting Limit

Sample Result

Reporting Limit

RIDEM Method 1 Industrial/Commercial Direct

Exposure Criteria

RIDEM Method 1 Residential Direct Exposure Criteria

RIDEM Method 1 GB Leachability Criteria

Units 6/24/2024 8:50

VHB-16 (1.5-3')

4F24029-02 6/24/2024 8:55

VHB-14 (0-1.5')

4F24029-03 6/24/2024 9:25

0-1.5' 1.5-3' 0-1.5'

VHB-16 (0-1.5')

4F24029-01

VHB-14 (1.5-3')

4F24029-04 6/24/2024 9:30

1.5-3'

Total Metals Antimony 10 820 mg/kg ND 0.77 ND 0.73 ND 0.79 ND 0.81 Arsenic 7 7 mg/kg 6.96 1.17 7.57 1.1 9.77 1.2 6.47 1.23 Beryllium 1.5 1.5 mg/kg 0.45 0.39 0.65 0.36 0.58 0.4 0.6 0.41 Cadmium 39 1000 mg/kg ND 0.58 ND 0.55 ND 0.6 ND 0.61 Chromium mg/kg 8.88 0.58 9.71 0.55 13.8 0.6 13.4 0.61 Copper 3100 10000 mg/kg 8.65 2.34 5.86 2.21 8.69 2.41 6.3 2.46 Lead 150 500 mg/kg 6.12 0.58 4.37 0.55 6.02 0.6 6.73 0.61 Nickel 1000 10000 mg/kg 10.7 0.58 8.8 0.55 13.5 0.6 8.35 0.61 Selenium 390 10000 mg/kg ND 1.17 ND 1.1 ND 1.2 ND 1.23 Silver 200 10000 mg/kg ND 1.17 ND 1.1 ND 1.2 ND 1.23 Zinc 6000 10000 mg/kg 25 2.3 21.8 2.2 25.7 2.4 24.5 2.5 Thallium 5.5 140 mg/kg ND 0.39 ND 0.36 ND 0.4 ND 0.41 Mercury 23 610 mg/kg ND 0.101 ND 0.105 ND 0.101 ND 0.1

Total Petroleum Hydrocarbons Total Petroleum Hydrocarbons 500 2500 2500 mg/kg ND 27 ND 29 57 28 31 28

Volatile Organic Compounds 8260C (5035-LL) Acetone 7800000 1.00E+07 ug/kg ND 103 ND 117 ND 78 ND 99 Benzene 2500 200000 4300 ug/kg ND 5 ND 6 ND 4 ND 5 Bromobenzene ug/kg ND 5 ND 6 ND 4 ND 5 Bromochloromethane ug/kg ND 5 ND 6 ND 4 ND 5 Bromodichloromethane 10000 92000 ug/kg ND 5 ND 6 ND 4 ND 5 Bromoform 81000 720000 ug/kg ND 5 ND 6 ND 4 ND 5 Bromomethane 800 2900000 ug/kg ND 5 ND 6 ND 4 ND 5 2-Butanone 1.00E+07 1.00E+07 ug/kg ND 103 ND 117 ND 78 ND 99 tert-Butyl alcohol ug/kg ND 5 ND 6 ND 4 ND 5 sec-Butylbenzene ug/kg ND 5 ND 6 ND 4 ND 5 n-Butylbenzene ug/kg ND 5 ND 6 ND 4 ND 5 tert-Butylbenzene ug/kg ND 5 ND 6 ND 4 ND 5 Methyl t-butyl ether (MTBE) 390000 1.00E+07 100000 ug/kg ND 5 ND 6 ND 4 ND 5 Carbon Disulfide ug/kg ND 5 ND 6 ND 4 ND 5 Carbon Tetrachloride 1500 44000 5000 ug/kg ND 5 ND 6 ND 4 ND 5 Chlorobenzene 210000 1.00E+07 100000 ug/kg ND 5 ND 6 ND 4 ND 5 Chloroethane ug/kg ND 5 ND 6 ND 4 ND 5 Chloroform 1200 940000 ug/kg ND 5 ND 6 ND 4 ND 5 Chloromethane ug/kg ND 5 ND 6 ND 4 ND 5 4-Chlorotoluene ug/kg ND 5 ND 6 ND 4 ND 5 2-Chlorotoluene ug/kg ND 5 ND 6 ND 4 ND 5 1,2-Dibromo-3-chloropropane (DBCP) 500 4100 ug/kg ND 5 ND 6 ND 4 ND 5 Dibromochloromethane 7600 68000 ug/kg ND 5 ND 6 ND 4 ND 5 1,2-Dibromoethane (EDB) 10 70 ug/kg ND 5 ND 6 ND 4 ND 5 Dibromomethane ug/kg ND 5 ND 6 ND 4 ND 5 1,2-Dichlorobenzene 510000 1.00E+07 ug/kg ND 5 ND 6 ND 4 ND 5 1,3-Dichlorobenzene 430000 1.00E+07 ug/kg ND 5 ND 6 ND 4 ND 5 1,4-Dichlorobenzene 27000 240000 ug/kg ND 5 ND 6 ND 4 ND 5 1,1-Dichloroethane 920000 1.00E+07 ug/kg ND 5 ND 6 ND 4 ND 5 1,2-Dichloroethane 900 63000 2300 ug/kg ND 5 ND 6 ND 4 ND 5 1,2 Dichloroethene, Total ug/kg ND 5 ND 6 ND 4 ND 5 trans-1,2-Dichloroethene 1100000 1.00E+07 92000 ug/kg ND 5 ND 6 ND 4 ND 5 cis-1,2-Dichloroethene 630000 1.00E+07 60000 ug/kg ND 5 ND 6 ND 4 ND 5 1,1-Dichloroethene 200 9500 700 ug/kg ND 5 ND 6 ND 4 ND 5 1,2-Dichloropropane 1900 84000 70000 ug/kg ND 5 ND 6 ND 4 ND 5 2,2-Dichloropropane ug/kg ND 5 ND 6 ND 4 ND 5 cis-1,3-Dichloropropene see 1,3-Dichloropropene (cis + trans) see 1,3-Dichloropropene (cis + trans) see 1,3-Dichloropropene (cis + trans) ug/kg ND 5 ND 6 ND 4 ND 5 trans-1,3-Dichloropropene see 1,3-Dichloropropene (cis + trans) see 1,3-Dichloropropene (cis + trans) see 1,3-Dichloropropene (cis + trans) ug/kg ND 5 ND 6 ND 4 ND 5 1,1-Dichloropropene ug/kg ND 5 ND 6 ND 4 ND 5 1,3-Dichloropropene (cis + trans) ug/kg ND 5 ND 6 ND 4 ND 5 Diethyl ether ug/kg ND 5 ND 6 ND 4 ND 5 1,4-Dioxane ug/kg ND 103 ND 117 ND 78 ND 99 Ethylbenzene 71000 1.00E+07 62000 ug/kg ND 5 ND 6 ND 4 ND 5 Hexachlorobutadiene 8200 73000 ug/kg ND 5 ND 6 ND 4 ND 5 2-Hexanone ug/kg ND 103 ND 117 ND 78 ND 99 Isopropylbenzene 27000 1.00E+07 ug/kg ND 5 ND 6 ND 4 ND 5 p-Isopropyltoluene ug/kg ND 5 ND 6 ND 4 ND 5 Methylene Chloride 45000 760000 ug/kg ND 5 ND 6 ND 4 ND 5 4-Methyl-2-pentanone 1200000 1.00E+07 ug/kg ND 103 ND 117 ND 78 ND 99 Naphthalene 54000 1.00E+07 ug/kg ND 5 ND 6 ND 4 ND 5 n-Propylbenzene ug/kg ND 5 ND 6 ND 4 ND 5 Styrene 13000 190000 64000 ug/kg ND 5 ND 6 ND 4 ND 5 1,1,1,2-Tetrachloroethane 2200 220000 ug/kg ND 5 ND 6 ND 4 ND 5 Tetrachloroethene 12000 110000 4200 ug/kg ND 5 ND 6 ND 4 ND 5 Tetrahydrofuran ug/kg ND 5 ND 6 ND 4 ND 5 Toluene 190000 1.00E+07 54000 ug/kg ND 5 ND 6 ND 4 ND 5 1,2,4-Trichlorobenzene 96000 1.00E+07 ug/kg ND 5 ND 6 ND 4 ND 5 1,2,3-Trichlorobenzene ug/kg ND 5 ND 6 ND 4 ND 5 1,1,2-Trichloroethane 3600 100000 ug/kg ND 5 ND 6 ND 4 ND 5 1,1,1-Trichloroethane 540000 1.00E+07 160000 ug/kg ND 5 ND 6 ND 4 ND 5 Trichloroethene 13000 520000 20000 ug/kg ND 5 ND 6 ND 4 ND 5 1,2,3-Trichloropropane ug/kg ND 5 ND 6 ND 4 ND 5 1,3,5-Trimethylbenzene ug/kg ND 5 ND 6 ND 4 ND 5 1,2,4-Trimethylbenzene ug/kg ND 5 ND 6 ND 4 ND 5 Vinyl Chloride 20 3000 ug/kg ND 5 ND 6 ND 4 ND 5 o-Xylene see Total xylenes see Total xylenes see Total xylenes ug/kg ND 5 ND 6 ND 4 ND 5 m&p-Xylene see Total xylenes see Total xylenes see Total xylenes ug/kg ND 10 ND 12 ND 8 ND 10 Total xylenes 110000 1.00E+07 ug/kg ND 5 ND 6 ND 4 ND 5 1,1,2,2-Tetrachloroethane 1300 29000 ug/kg ND 5 ND 6 ND 4 ND 5 tert-Amyl methyl ether ug/kg ND 5 ND 6 ND 4 ND 5 1,3-Dichloropropane ug/kg ND 5 ND 6 ND 4 ND 5 Ethyl tert-butyl ether ug/kg ND 5 ND 6 ND 4 ND 5 Diisopropyl ether ug/kg ND 5 ND 6 ND 4 ND 5 Trichlorofluoromethane ug/kg ND 5 ND 6 ND 4 ND 5 Dichlorodifluoromethane ug/kg ND 5 ND 6 ND 4 ND 5

Notes:

Bolded values = Cases where the analyte was greater than or equal to reporting limits Cells with this color indicate = Cases where the analyte concentration exceeds Direct Exposure Criteria Cells with this color indicate = Cases where the analyte concentration exceeds Industrial/Commercial Direct Exposure Criteria Underlined values indicate = Cases where the analyte concentration exceeds GB Leachability Criteria ND = Results not detected above laboratory detection limit.

ug/kg = Micrograms per kilogram, equivalent to parts per billion (ppb)

Vacant Commercial Property 651 Narrangansett Park Drive, Pawtucket, Rhode Island

Sample ID Sample Depth Lab Sample Designation Sample Date

Parameter General Chemistry pH SU

Herbicides Dalapon ug/kg Dicamba ug/kg Dichloroprop ug/kg 2,4-D ug/kg 2,4,5-TP (Silvex) ug/kg 2,4,5-T ug/kg 2,4-DB ug/kg Dinoseb ug/kg

Pesticides alpha-BHC ug/kg gamma-BHC (Lindane) ug/kg beta-BHC ug/kg delta-BHC ug/kg Heptachlor ug/kg Aldrin ug/kg Heptachlor epoxide ug/kg gamma-Chlordane see Chlordane see Chlordane see Chlordane ug/kg alpha-Chlordane see Chlordane see Chlordane see Chlordane ug/kg Chlordane 500 4400 10000 ug/kg 4,4’-DDE ug/kg Endosulfan I ug/kg Dieldrin 40 400 ug/kg Endrin ug/kg 4,4’-DDD ug/kg Endosulfan II ug/kg Endrin aldehyde ug/kg 4,4’-DDT ug/kg Methoxychlor ug/kg Endosulfan sulfate ug/kg Endrin Ketone ug/kg Endosulfan (I & II) ug/kg Toxaphene ug/kg

Polychlorinated Biphenyls (PCBs) Aroclor-1016 see PCBs (Total) see PCBs (Total) see PCBs (Total) ug/kg Aroclor-1221 see PCBs (Total) see PCBs (Total) see PCBs (Total) ug/kg Aroclor-1232 see PCBs (Total) see PCBs (Total) see PCBs (Total) ug/kg Aroclor-1242 see PCBs (Total) see PCBs (Total) see PCBs (Total) ug/kg Aroclor-1248 see PCBs (Total) see PCBs (Total) see PCBs (Total) ug/kg Aroclor-1254 see PCBs (Total) see PCBs (Total) see PCBs (Total) ug/kg Aroclor-1260 see PCBs (Total) see PCBs (Total) see PCBs (Total) ug/kg Aroclor-1262 see PCBs (Total) see PCBs (Total) see PCBs (Total) ug/kg Aroclor-1268 see PCBs (Total) see PCBs (Total) see PCBs (Total) ug/kg PCBs (Total) 10000 10000 ug/kg

Semivolatile organic compounds 1,2,4-Trichlorobenzene 96000 1.00E+07 ug/kg 1,2-Dichlorobenzene 510000 1.00E+07 ug/kg 1,3-Dichlorobenzene 430000 1.00E+07 ug/kg 1,4-Dichlorobenzene 27000 240000 ug/kg Phenol 6000000 1.00E+07 ug/kg 2,4,5-Trichlorophenol 330000 1.00E+07 ug/kg 2,4,6-Trichlorophenol 58000 520000 ug/kg 2,4-Dichlorophenol 30000 6100000 ug/kg 2,4-Dimethylphenol 1400000 1.00E+07 ug/kg 2,4-Dinitrophenol 160000 4100000 ug/kg 2,4-Dinitrotoluene 900 8400 ug/kg 2,6-Dinitrotoluene ug/kg 2-Chloronaphthalene ug/kg 2-Chlorophenol 50000 1.00E+07 ug/kg 2-Methylnaphthalene 123000 1.00E+07 ug/kg Nitrobenzene ug/kg 2-Methylphenol ug/kg 2-Nitroaniline ug/kg 2-Nitrophenol ug/kg 3,3’-Dichlorobenzidine 1400 13000 ug/kg 3-Nitroaniline ug/kg 4,6-Dinitro-2-methylphenol ug/kg 4-Bromophenyl phenyl ether ug/kg 4-Chloro-3-methylphenol ug/kg 4-Chloroaniline 310000 8200000 ug/kg 4-Chlorophenyl phenyl ether ug/kg 4-Nitroaniline ug/kg 4-Nitrophenol ug/kg Acenaphthene 43000 1.00E+07 ug/kg Acenaphthylene 23000 1.00E+07 ug/kg Aniline ug/kg Anthracene 35000 1.00E+07 ug/kg Benzo(a)anthracene 900 7800 ug/kg Benzo(a)pyrene 400 800 ug/kg Benzo(b)fluoranthene 900 7800 ug/kg Benzo(g,h,i)perylene 800 1.00E+07 ug/kg Benzo(k)fluoranthene 900 78000 ug/kg Benzoic acid ug/kg Biphenyl 800…