Groundwater Monitoring & Reporting
CORE Environmental Consultants performs comprehensive groundwater monitoring programs for construction sites, brownfields, Superfund properties, and post-remediation compliance. Our services include well installation, low-flow sampling, permit-based monitoring, and detailed regulatory reporting in accordance with DER-10, SPDES, Part 360, and site-specific remedial requirements.
Whether for routine compliance or to support site closure, our monitoring services ensure data quality, defensibility, and full regulatory alignment.
When Is Groundwater Monitoring Required?
- As part of a Remedial Investigation (RI) or Site Management Plan (SMP)
- To satisfy requirements under the Brownfield Cleanup Program (BCP) or State Superfund
- For SPDES permit compliance and wastewater discharge monitoring
- To support periodic reporting for landfills, LUST sites, and UST closures
- For performance monitoring following in-situ treatment or source removal
Groundwater monitoring is often required quarterly, semi-annually, or annually, depending on the site’s regulatory framework.
CORE’s Groundwater Services
Our experienced field team and data analysts manage:
- Well installation, development, and surveying
- Low-flow sampling and purge protocols (per EPA Region 2)
- Water level gauging and hydraulic gradient assessments
- Vapor and surface water sampling (where applicable)
- Field parameter measurement and QA/QC documentation
- Laboratory coordination (VOC, SVOC, metals, PFAS, etc.)
- Database management and regulatory reporting
- Preparation of Periodic Review Reports (PRRs) and FER appendices
Our Process
- Monitoring Plan Development
CORE reviews applicable permits, RAWPs, and SMPs to define sampling scope, frequency, and analytical parameters. - Field Implementation
We mobilize trained technicians to collect representative samples following low-flow or traditional methods. Calibration, chain-of-custody, and field logs are maintained to ensure defensibility. - Laboratory Coordination & Data Review
We coordinate sample submittal to ELAP-certified labs, review deliverables for accuracy, and flag exceedances of groundwater standards (6 NYCRR Part 703). - Data Visualization & Mapping
CORE prepares tables, iso-contour maps, and historical trend plots for use in regulatory reports and stakeholder presentations. - Reporting & Compliance Support
Our team prepares appendices for SMPs and FERs, stand-alone groundwater reports, or PRRs with complete documentation and recommendations.
✅ Why CORE?
✔ Technically Sound, Regulator-Ready Data
We follow strict QA/QC procedures and provide clear, actionable results.
✔ Full Lifecycle Support
From installation through long-term monitoring and closure, we manage the full groundwater program lifecycle.
✔ Experienced in All Site Types
We’ve supported monitoring for active facilities, remediated sites, construction projects, and undeveloped brownfields.
✔ Integrated with Site Remediation
Our groundwater services complement broader investigation and cleanup strategies.
Our Environmental Site Remediation Services.
Remedial Investigations & Feasibility Studies (DER-10)
CORE conducts Remedial Investigations (RIs) and Feasibility Studies (FSs) in accordance with NYSDEC DER-10 to characterize contamination and evaluate cleanup alternatives. Our services include sampling plans, conceptual site models, risk assessments, and cost-benefit analyses to support the selection of effective, regulatory-approved remedial strategies.
Brownfield Cleanup Program (BCP) Support
CORE offers comprehensive support for Brownfield Cleanup Program (BCP) sites, guiding property owners and developers through investigation, remedial action planning, community outreach, and documentation. We coordinate closely with NYSDEC to secure Certificates of Completion (COCs), tax credit eligibility, and regulatory closure for redevelopment projects on environmentally impacted land.
In-Situ & Ex-Situ Remediation
CORE designs and implements both in-situ and ex-situ remediation technologies to treat contaminated soil, groundwater, and vapor at active and legacy sites. Our capabilities include excavation, chemical oxidation, bioremediation, soil vapor extraction (SVE), and stabilization techniques, selected based on cost, site access, contaminant type, and regulatory targets.
Vapor Intrusion Mitigation Systems
CORE designs vapor intrusion mitigation systems that protect indoor air quality in buildings located above contaminated subsurface environments. Our services include sub-slab depressurization system (SSDS) design, passive venting, vapor barriers, and post-installation verification sampling, all compliant with NYSDOH and NYSDEC guidance.
Groundwater Monitoring & Reporting
CORE conducts routine and long-term groundwater monitoring programs to track contaminant migration, demonstrate remedy effectiveness, and support regulatory closure. We install and sample monitoring wells, analyze results against groundwater standards, and prepare detailed reports for submission under DER-10, BCP, and Superfund oversight.
Site Management Plans (SMPs) & Periodic Review Reports (PRRs)
CORE prepares and maintains Site Management Plans (SMPs) and Periodic Review Reports (PRRs) to ensure the long-term protectiveness of institutional and engineering controls. Our reports include inspection protocols, maintenance records, and regulatory certifications that align with NYSDEC DER-10 and site-specific environmental easements.
Regulatory Closure & Coordination
CORE manages the regulatory closure process by compiling investigation and remediation data, preparing closure reports, and coordinating with NYSDEC, NYC OER, and other agencies. Our goal is to achieve No Further Action (NFA) determinations or Certificates of Completion (COCs), ensuring sites are compliant, documented, and redevelopment-ready.
Schedule Reliable Groundwater Monitoring
Ensure defensible data, meet your reporting deadlines, and maintain compliance — CORE is your partner in groundwater stewardship.
