44-15 Proposal.pdf

Mactix New World Engineering, Inc. 26 Columbia Tumpike Florham Park NJ 07932 973.240-1800 Fax 973.240.1818 www.mattixneworld.com — yacpasese MATRIXNEWORLD Enabling Progress December 3, 2014 Mr. Leonard R. Lepore, P.E., Municipal Engineer Township of West Orange, Director of Public Works 25 Lakeside Avenue West Orange, New Jersey 07052 Re: PROPOSAL FOR ENVIRONMENTAL SERVICES TOWNSHIP OF WEST ORANGE FOR THREE SITES FIRE HOUSE NO. 1, 415 VALLEY ROAD WEST ORANGE FIRST AID SQUAD BUILDING, 25 MT. PLEASANT PLACE DOGWOOD PUMP STATION, 794 NORTHFIELD AVENUE ‘WEST ORANGE, NEW JERSEY MATRIX NO. 13-618E Dear Mr. Lepore: Matrix New World Engineering, Inc. (Matrix) is pleased to provide this proposal to perform various environmental investigation activities at the above-referenced Sites. The proposal has been broken down into several tasks in order to complete remedial investigation (RI) activities associated with each Site. The proposed Work will be completed in accordance With the Site Remediation Reform At (SRRAY, NSA S810C=1 et D> the Administrative Requirements for the Remediation of Contaminated Sites (ARRCS), N.J.A.C. 7:26C, the Technical Requirements for Site Remediation (TRSR), N.J.A.C. 7:26F, the Underground Storage Tank (UST) Regulations, N.J.A.C. 7:14B-1-13 and 15 and applicable New Jersey Department of Environmental Protection (NJDEP) Guidance Documents. Oversight of investigation activities will be conducted by a New Jersey Licensed Site Remediation Professional (LSRP). Mr. Robert Meisner of Matrix will retain himself as the LSRP of Record for the three above-referenced Sites. SITE BACKGROUND This proposal includes a RI of former regulated underground storage tanks (USTs) associated with the following three Sites, owned by the Township of West Orange: . Fire House No, 1, 415 Valley Road {PI NO. 014427} « First Aid Squad Building, 25 Mt. Pleasant Place {PI NO. 014426) . Dogwood Pump Station, 794 Northfield Avenue (P! NO. 024987) HIRE HOUSE NO. 1, 415 VALLEY ROAD Three USTs were removed on behalf of the Township in December 1993. The USTs consisted of one, 1,000- gallon unleaded gasoline UST (AOC-1), one, 1,000-gallon light diesel fuel UST (AOC-2) and one, 1,000-gallon No, 2 heating oil UST (AOC-3), During the removal of the 1,000-gallon light diesel fuel UST, a discharge was identified, the NJDEP spill hotline was notified and Case No.

(AOC-2) and one, 1,000-gallon No, 2 heating oil UST (AOC-3), During the removal of the 1,000-gallon light diesel fuel UST, a discharge was identified, the NJDEP spill hotline was notified and Case No. 93-12-16-0818-26 was assigned. Matrix completed a soil and groundwater site investigation (SI) and submitted a Site Investigation Report (SIR) to the NIDEP on March 20, 2014 along with a Remedial Investigation Extension Request for the May 7, 2014 RI deadline. Based on the SI, benzene and tetrachloroethene (PCE) were detected in soil above the NJDEP’s November 2013 default Impact to Groundwater Soil Screening Levels ((GWSSLs) at AOC-1. Extractable Petroleum Hydrocarbons (EPH), Category 1, naphthalene and 2-methylnaphthalene concentrations in soil were detected above either the NJDEP’s default [GWSSL or the residential direct contact soil remediation standard (RDCSRS) at the common. excavation associated with AOCs 2 and 3. Based on the groundwater SI (one groundwater sample collected from ‘OAI3-G18E - Township of West Orange - LSRP Services\ProposahRevised Soil and GW RI - December 2014\Soil and GW RI - December 2014.doc, 1

MATRIXNEWORLD Enabling Progress TW-1), volatile organic compounds (VOCs) including benzene and vinyl chloride were detected in groundwater above the Groundwater Quality Standards (GWQS). Vinyl chloride was also detected above the NJDEP’s Groundwater Screening Levels (GWSLs) triggering a vapor intrusion investigation. Finally, several semivolatile organic compounds (SVOCs) including benzo(a)anthracene, benzo(a)pyrene, benzo(b)fluoranthene and SVOC tentatively identified compounds (TICs), and lead were detected at concentrations above the GWQS. Therefore, a soil and groundwater RI is required for this Site. FIRST AID SQUAD BUILDING, 25 MT. PLEASANT PLACE A 2,000-gallon unleaded gasoline UST was removed on behalf of the Township in December 1993 (AOC-1). During the UST closure activities, soil contamination was noted, the NJDEP spill hotline was notified and Case No. 93-12-10-0911-27 was assigned. Matrix completed a soil and groundwater SI and submitted a S/R on March 20, 2014 along with a Remedial Investigation Extension Request for the May 7, 2014 RI deadline. Based on the SI, VOCs and lead were not detected in soil above the NJDEP’s default IGWSSL. However, lead was detected in groundwater above the GWQS. The elevated concentration of lead in groundwater may be attributable to silt that was present in the groundwater sample collected from the temporary well. In order to verify whether or not lead is present in groundwater above GWQS, a representative groundwater sample will be collected following the installation of a permanent monitoring well. If lead is groundwater is not detected at concentrations above the GWQS, then an area of concer, unrestricted use Response Action Outcome (RAO) can be issued for the Site. DOGWOOD PUMP STATION, 794 NORTHFIELD AVENUE A 550-gallon diesel fuel UST was removed on behalf of the Township in December 1993 (AOC-1). During the UST closure activities, a discharge was identified, the NJDEP spill hotline was notified and Case No. 94-05-16- 61133 was assigned: _vintrix completed-a soit-amd- groundwater Si-and submitted 2 s7k-on March 20-2014 —- along with a Remedial Investigation Extension Request for the May 7, 2014 RI deadline. Based on the SI, petroleum contaminants, specifically EPHs in soil and VOCs or SVOCs in groundwater were not detected above the applicable remediation standards, However, one soil boring to the

ine. Based on the SI, petroleum contaminants, specifically EPHs in soil and VOCs or SVOCs in groundwater were not detected above the applicable remediation standards, However, one soil boring to the west could not be completed due to the high snow pile generated from recent storm event. Therefore, Matrix is proposing to complete one soil boring to the west of the former UST. If no soil exceedances are identified, then an unrestricted use, area of concern specific RAO can be issued for the Site. SCOPE OF WORK Based on the investigations completed to date, the following RI activities are recommended. All drilling activities will be completed by a New Jersey-licensed well driller. Prior to completing each boring, each boring on-site will be utility cleared utilizing a private utility markout vendor. The laboratory samples will be submitted to a New Jersey-certified laboratory. The soil cuttings and purge water generated during the monitoring well installation activities will be temporarily staged in drums on-site for future off-site disposal. This proposal also includes the disposal of the 55-drums. FIRE HOUSE NO. 1, VALLEY ROAD TASK 1: SOIL DELINEATION AND TEMPORARY WELL INSTALLATION As noted above benzene and PCE are identified in unsaturated soils above the NJDEP’s default IGWSSLs at AOC-1, Therefore, one day of soil borings are proposed via direct push drill method using a New Jersey-licensed driller. Using an existing soil boring associated with AOC-2 and AOC-3, a total of three soil borings will be completed for AOC-1. Two of the borings are proposed for horizontal delineation and one soil boring is proposed for vertical delineation at AOC-1. The soil samples will be analyzed for benzene and PCE. A field blank will also accompany the samples and will be analyzed for benzene and PCE. As patt of this task, Matrix will also collect three soil samples to be analyzed for benzene and PCE and benzene and PCE by the synthetic precipitation leaching procedure (SPLP) for the determination of a site-specific soil remediation standard. A site-specific soil remediation standard for benzene and/or PCE will be calculated and used for the delineation of benzene and PCE OA13-618E - Township of West Orange - LSRP Secvices\Proposal\Revised Soil and GW RI - December 2014\Soil and GW RI - December 2014.<oc 2

MATRIXNEWORLD Enabling Progress in soil if the calculated site-specific Impact to Groundwater Soil Remediation Standard (IGWSRS) is less stringent than the NJDEP’s default IGWSSL of 0.005 mg/kg for both compounds. For AOC-2 and AOC-3, three soil borings are proposed; two for horizontal and one for vertical delineation. The soil samples will be analyzed for EPH, Category 1. Contingent analyses including naphthalene and 2- methylnapthalene (2-MN) will be analyzed on 25% of the samples where EPHs exceed 1,000 milligrams per kilogram (mg/kg). If 2-MN exceeds NJDEP’s default IGWSSL, then the sample will be analyzed using the SPLP to determine a site specific impact to groundwater soil screening level. Finally, several soil borings will be completed for the installation of temporary well points. One temporary well will be installed within the former common excavation (AOC-2 and AOC-3) as a groundwater SI is required for these former USTs. Three additional temporary wells are proposed in the anticipated downgradient direction of former TW-1 that contained VOCs, SVOCs and lead in groundwater above the GWQS. For the temporary well installed at AOC-2 and AOC-3, a groundwater sample will be collected and analyzed for VOCs and SVOCs analyses. For the remaining temporary wells installed downgradient of TW-1, groundwater samples will be collected and analyzed for VOCs. The samples will be submitted to a New Jersey-certified laboratory on a standard (two-week) turnaround. Since the temporary well points will be used to determine the placement of future monitoring wells and turbidity associated with the collection of groundwater samples collected from temporary well points could bias results high for SVOC TICs and lead groundwater samples collected from the temporary well points will not be analyzed for SVOC TICs and lead at this time. TASK 2: MONITORING WELL INSTALLATION rig. One overburden well, MW-1 will be installed in the vicinity of former temporary well, TW-1, one well, MW- 2, will be installed in the vicinity of TW-2, and the third well, MW-3, at the location of either TW-3, TW-4 or TW-5. The overburden wells will be constructed of 4-inch diameter PVC and screened from approximately 20 to 25 feet below ground surface (bgs). As noted above, additional monitoring wells may be required following the installation and sampling of temporary and monitoring wells

eened from approximately 20 to 25 feet below ground surface (bgs). As noted above, additional monitoring wells may be required following the installation and sampling of temporary and monitoring wells points. Additional monitoring well installation is not included in this scope of work. TASK 3: WELL GAUGING AND GROUNDWATER SAMPLING Approximately two weeks following the monitoring well installation activities, one round of groundwater sampling will be completed from wells MW-1, MW-2, MW-3 via low-flow purging techniques. Wells, MW-1 and MW-3, will be analyzed for VOCs and lead. MW-2 will be analyzed for VOCs and SVOCs. Water quality indicator parameters (dissolved oxygen, pH, temperature, conductivity, turbidity and ORP) will be monitored during the groundwater purging and sampling activities (Matrix Lab Certification No. 14049). One field blank and one trip blank will also be collected and analyzed for the parameters identified above. The samples will be analyzed on a standard two-week turn around. TASK 4A: SUB-SLAB SOIL GAS SAMPLING AND REPORTING, IF REQUIRED As noted above, vinyl chloride concentrations in groundwater at former temporary well, TW-1, exceed NJDEP’s GWSLs; therefore, following the installation and sampling of MW-1, a vapor intrusion investigation may be required should concentrations of vinyl chloride in groundwater remain at concentrations above the GWSLs. As part of this task, Matrix will perform a pre-sampling inspection of the fire house building approximately one week prior to the sub-slab soil gas sampling event. During the pre-sampling inspection, Matrix will select the sampling locations and coordinate with the occupants in the building. This task also includes the completion of NJDEP’s Indoor Air Sampling Form. The work will be completed in accordance with NJDEP’s March 2013 Vapor Intrusion Technical Guidance (Version 3.1). A total of seven sub-slab soil gas samples are budgeted for this project since the existing building appears to have two separate foundations and the approximate square footage of each area is 3,360 and 5,300 square feet, respectively. (OAI3-6188 - Township of West Orange - LSRP Services\ProposaRevised Soil and GW RI - December 2014\Soil and GW RI - December 2014.doc, 3 e ———

MATRIXNEWORLD Enabling Progress The seven proposed sub-slab soil gas samples will be obtained below the building’s concrete slab. Each sub-slab sample will be collected from tubing inserted into a 42-inch diameter sample point created with a drill bit through the concrete floor/slab. The annulus between the tubing and the temporary sample point was sealed with non- volatile emitting and non-shrinking modeling clay. Matrix will perform a leak test (i.¢., tracer test and shut-in test) on the soil gas probe and all fittings of the sample train prior to sample collection in a laboratory supplied and calibrated 1-liter stainless steel canister with a flow controller (1 liter Summa Canister) set to achieve a flow of less than 0.2 liters per minute and a sampling duration of approximately 5 minutes. Following the collection of the sub-slab soil gas, each drilled hole will be patched with hydraulic cement. The sub-slab soil gas samples will be submitted to a New Jersey-certified laboratory for TO-15 analysis on a standard turnaround. The results will be compared to NJDEP’s Non-Residential Soil Gas Screening Levels (NRSGSL). If any contaminants of concern are detected above the NRSGSLs, then indoor air sampling may be required to determine if the vapor intrusion pathway is complete as noted in Task 4B below. Following the completion of the VI, Matrix will prepare the NJDEP required notification letters in accordance with the TRSR, 7:26E-1.15. Specifically, notification will be provided to the tenant (if applicable}, the Township of West Orange and NJDEP Bureau of Case Assignment and Initial Notice. As part of the submission, Matrix will prepare the NJDEP’s Full Laboratory Data Deliverable form. The Full Data Deliverables Form, prior to submittal to the NIDEP, will be reviewed by a data validator. ———— TASK-4B INDOOR AIR SAMPLING AND REPORTING; 1F REQUIRED ——— As noted above, if sub-slab soil gas samples exceed the NIDEP’s NRSGSLs, then indoor air sampling is required, Five indoor air samples and one background sample is budgeted based on the approximate square footage of the building as noted above. Matrix will mobilize to the Site, set up the sampling canisters (Summa canisters) and retrieve the canisters the following day (24 hour test). The samples will be submitted to a NJ-certified laboratory for TO-15 analysis on a standard (two-week) turnaround. The

s (Summa canisters) and retrieve the canisters the following day (24 hour test). The samples will be submitted to a NJ-certified laboratory for TO-15 analysis on a standard (two-week) turnaround. The analytical data will be compared to NJDEP’s Non-Residential Indoor Air Screening Levels and included in the NJDEP required notification noted above. TASK 5: UPDATED ECOLOGICAL EVALUATION Tn accordance with N.J.A.C. 7:26E-1.16, an updated ecological evaluation will be completed using the recently collected soil and groundwater data. The data will be compared to the applicable ecological screening criteria/values or surface water criteria. If constituents are detected on the subject property or in an AOC above screening criteria then pursuant to N.J.A.C. 7:26E-4.8 constituent migration pathways must be assessed to i determine whether those constituents could reach an ESNR located on or adjacent to the subject property. TASK 6: WELL SEARCH, IF REQUIRED Tf contaminants in groundwater are confirmed to be above the NJDEP’s GWQS, a well search will be completed in accordance with the TRSR, 7:26E-1.14 Receptor evaluation - ground water. A well search must be completed within 90 days after groundwater contamination is detected. The purpose is to identify nearby wells that may be impacted by contamination from the Site. TASK 7: REPORTING AND LSRP MANAGEMENT Matrix will prepare a draft Remedial Investigation Report that also includes the preparation of NJDEP’s Site Remediation Program (SRP) forms in accordance with ARRCS and the TRSR. The report will incorporate the newly-collected. analytical data with the existing data and include recommendations for additional investigation and/or remedial activities. Matrix will also prepare a Case Inventory Document (CID) that is a concise summary of all of the AOCs at the Site. Should a report or additional tasks be required based on the findings from the OM3-618E - Township of Wost Orange - LSRP Services\Proposal\Revised Soil and GW RI - December 2014\Soil and GW Ri - December 2014.dec 4

MATRIXNEWORLD Enabling Progress investigation, Matrix will provide a separate cost estimate. This task also includes project management and discussions with the client regarding the proposed work. FIRST AID SQUAD BUILDING, 25 MT. PLEASANT PLACE TASK 1; MONITORING WELL INSTALLATION Matrix is recommending the installation of one overburden monitoring well utilizing a hollow stem auger drill rig. One overburden well, MW-1 will be installed at the location of former temporary well, TW-1. The overburden well will be constructed of 4-inch diameter PVC and screened from approximately 4 to 12 feet below ground surface (bgs). The soil cuttings and well development water will be containerized in 55-gallon drums for future off-site disposal. TASK 2: WELL GAUGING AND GROUNDWATER SAMPLING Approximately two weeks following the monitoring well installation activities, one round of groundwater sampling will be completed from well MW-1 via low-flow purging techniques for lead analysis. Water quality indicator parameters (dissolved oxygen, pH, temperature, conductivity, turbidity and ORP) will be monitored during the groundwater purging and sampling activities. One field blank will also be collected and analyzed for the parameters identified above. The samples will be analyzed on a standard two-week turn around. TASK 3 — CONFIRMATORY GROUNDWATER SAMPLING, IF REQUIRED The groundwater samples will be compared to NIDEP’s GWQS. If groundwater samples are below the GWQS, then no further groundwater sampling is required. However, if groundwater samples are detected slightly above the GWQS, then two additional groundwater samples will be collected within 30 days to determine compliance With the GWOS. If contaminants in groundwater are Still above the GWOS, then an Additional groundwater will be required, that is not included in this scope of work. Following the completion of the well installation and groundwater sampling activities, drum disposal will be completed. Please note that up to four drums (assumed as non-hazardous) is budgeted for disposal. The abandonment of the monitoring well, is included if contaminant concentrations are below the GWQS. TASK 4: REPORTING AND LSRP MANAGEMENT : Tf the groundwater sample collected from MW-1 is below the GWQS, Matrix will prepare a RIR that also includes t the preparation of NJDEP’s SRP forms in accordance with ARRCS and the

LSRP MANAGEMENT : Tf the groundwater sample collected from MW-1 is below the GWQS, Matrix will prepare a RIR that also includes t the preparation of NJDEP’s SRP forms in accordance with ARRCS and the TRSR. Matrix will also prepare a CID. Finally, Matrix will prepare and issue an unrestricted use Area of Concern (AOC) Response Action Outcome (RAO). Should a report or additional tasks be required based on the findings from the investigation, Matrix will provide a separate cost estimate. This task also includes project management and discussions with the client regarding the proposed work. DOGWOOD PUMP STATION, 794 NORTHFIELD AVENUE TASK 1: COMPLETION OF ONE SOIL BORING Matrix is proposing to complete one soil boring to the west of the former heating out UST. One soil boring will be advanced via direct push drill method and one sample will be collected for EPH, Category 1 with contingent analyses including naphthalene and 2-MN on 25% of the samples where EPHs exceed 1,000 mg/kg. TASK 2: REPORTING AND LSRP MANAGEMENT If the soil sample collected from the soil boring completed to the west of the former UST, Matrix will prepare a RIR that also includes the preparation of NIDEP’s SRP forms in accordance with ARRCS and the TRSR. Matrix will also prepare a CID. Finally, Matrix will prepare and issue an unrestricted use, AOC RAO. Should a report ot additional tasks be required based on the findings from the investigation, Matrix will provide a separate cost estimate. This task also includes project management and discussions with the client regarding the proposed work, OM3.6185 - Township of West Orauge - LSRP Services\Proposal Revised Soil and GW RI - December 2014\Soil and GW RE- December 2014.doc 5