271-25 Exhibit A-Matrix RSGC Proposal.pdf

PROPOSED SCOPE OF SERVICES The proposed work will be completed in accordance with the Site Remediation Reform Act (SRRA), N.J.S.A 58:10C-1 et seq., the Administrative Requirements for the Remediation of Contaminated Sites (ARRCS), N.J.A.C. 7:26C, the Technical Requirement for Site Remediation (TRSR), N.J.A.C. 7:26E, and the NJDEP’s Historic Fill Material Technical Guidance document (April 2013). Task 1 – LSRP Retention In accordance with the SRRA, ARRCS, and the TRSR, Matrix will submit the Licensed Site Remediation Professional (LSRP) Retention Form via the NJDEP Online Portal. In addition, in accordance with the TRSR, the person responsible for conducting the remediation of a contaminated site is required to perform public notification and outreach. Matrix will prepare and post a Public Notification sign and submit a revised public notification form to the NJDEP. Task 2 – Confirmatory Groundwater Sampling Event Based on the September 2025 groundwater sampling event, benzene was identified at concentrations below the applicable NJDEP Groundwater Quality Standards (GWQS) and not an order of magnitude above the current February 2025 NJDEP GWQS at monitoring well, MW-3. Pursuant to the NJDEP guidance, a minimum of two (2) consecutive rounds of groundwater sampling, conducting at least three (3) months apart, are required to demonstrate that groundwater impacts have been remediated or are no longer present. Matrix recommends the completion of one (1) additional sampling event for monitoring well MW-3 to further evaluate groundwater quality and confirm that residual benzene impacts have been removed at the Site. Matrix proposes the completion of a groundwater sampling event for monitoring well MW-3 in December 2025 to confirm the finding from the September 2025 groundwater sampling event. The groundwater sampling event will include sample collection from one monitoring well (MW-3) as the other nine monitoring wells have illustrated two consecutive clean rounds in the past for benzene, MTBE, and TBA. Prior to purging and sampling, the static groundwater level in each monitoring well will be measured and recorded. The monitoring well will be purged and sampled using the NJDEP-approved volume average purging (VAP) and sampling methodology. Purge water will be filtered through a carbon filter bucket prior to discharge to the surface. One (1) groundwater sample will

the NJDEP-approved volume average purging (VAP) and sampling methodology. Purge water will be filtered through a carbon filter bucket prior to discharge to the surface. One (1) groundwater sample will be collected from monitoring well MW-3. The groundwater samples will then be sent to a NJDEP certified laboratory to be analyzed for benzene. The sample will be analyzed on a standard two (2) week turnaround time. The groundwater sampling event is anticipated to be completed in one (1) day. Upon receipt, the groundwater sampling results will be compared to the NJDEP GWQS and the interim groundwater quality criteria. Task 3 – Update and submission of the Site Investigation Report to the NJDEP Matrix had previously prepared a Site Investigation (SI) Letter Report for the work that was completed in September 2025 at the Site. In this task, Matrix will compile the results from the site investigation activities into a Site Investigation Report (SIR) which will include the upcoming December 2025 sampling event (task 2). The SIR will include a summary of the sampling results demonstrating that no HFM was observed during the advancement of the soil borings, the findings from the two groundwater sampling events, an order of magnitude analysis, the well decommissionings, and findings and recommendations. Upon completion, a draft SIR will be submitted to the Township for review. Comments provided by the Township will be incorporated into the final SIR and the SIR will be submitted through the NJDEP online portal along with a Case Inventory Document (CID), which provides a summary of identified AOCs and the associated NJDEP forms including an Receptor Evaluation (RE). F:\2025\25-0698- Rock Spring Golf Course\Proposal\Rock Spring Country Club Proposal_Final_11.13.2025.docx 2