Guidance
Remediation Standard Regulations
- Multiple Lines of Evidence Guidance
- Guidance Document for Pollutant Mobility Criteria Exception for Groundwater Infiltration (Nov 2013)
- Guidance Document for Exemptions for Incidental Sources (Nov 2013 Rev.March 2023)
- Guidance for Calculating the 95% Upper Confidence Level for Demonstrating Compliance with the Remediation Standard Regulations (May 2014)
- Groundwater Compliance Monitoring Factsheet (Nov 2014, rev. Oct 2015)
- EPA Recommended Summary Checklist for a Superfund Monitored Natural Attenuation Evaluation for Groundwater (Feb 2025)
- Regulatory Clarification: Asphalt Millings are Not Clean Fill (Oct 2006)
- Environmental Use Restrictions
- Engineered Control Variances
- Guidance Document for Rendering Soil Inaccessible Using Pavement (Nov 2013)
- Technical Impracticability Variances
- Green Remediation
Site Characterization
- Site Characterization Guidance Document (Sept 2007, rev. Dec 2010)
- Release Characterization Guidance
- Water Supply Well Receptor Guidance Document (Sept 2009, rev. Jan 2015)
- Use of Filters for Groundwater Sampling Technical Memorandum and Guidance (May 2012)
- Ecological Risk Assessment
- Trichloroethylene (TCE) Developmental Risks - joint guidance from DPH and DEEP (Feb 2015)
- Polychlorinated Biphenyls
- Emerging Contaminants
- Guidance for Collecting and Preserving Soil and Sediment Samples for Laboratory Determination of Volatile Organic Compounds (Feb 2006)
- EPA Region 4 - Design and Installation of Monitoring Wells
- ASTM - Standard Practice for Design and Installation of Groundwater Monitoring Wells
- General Guidance on Development of Former Agricultural Properties (March 1999)
- Quality Assurance and Quality Control
- Laboratory Quality Assurance and Quality Control Guidance (May 2009, rev. Dec 2010, rev. April 2024)
- Reasonable Confidence Protocols Guidance (Nov 2007, rev. Dec 2010, rev. March 2024)
- Reasonable Confidence Protocols (Dec 2006, May 2024)
Licensed Environmental Professional (LEP) Program
- Verification Report Guidance Document (Aug 2008, rev. Dec 2013, rev. Jun 2017)
Property Transfer Program and Voluntary Remediation Program
- Guidance for Utility Company Excavation (Jan 2001)
RCRA Closure and Corrective Action Program
- Considerations for Assessing Ecological Risks (EPA, RCRA, March 2015)
- RCRA Corrective Action Ecological Receptor Exposure Pathway Scoping Checklist (Nov 2013)
- Remediation Stewardship Permits
Underground Storage Tank Clean-up
- Residential Home Heating Oil Tanks
- Sampling and Analytical Methods for Underground Storage Tank Closure (July 2012, rev. Dec 2023)
DEEP Concurrence with ITRC Technical Guidance Documents
The Interstate Technology and Regulatory Council (ITRC) is a public-private coalition with members from all 50 states and the District of Columbia. It produces documents and training to broaden and deepen technical knowledge and expedite quality regulatory decision-making while protecting human health and the environment. Because ITRC guidance are written for a national audience, the guidance cannot reflect the individuality of state environmental rules. DEEP recommends users carefully consider how the guidance interrelate to Connecticut’s laws and regulations. DEEP has prepared Concurrence documents for certain ITRC guidance to assist environmental practitioners in applying technical advances described by ITRC guidance documents to the remediation of Connecticut sites in conformance with the Remediation Standard Regulations.
- DEEP Concurrence with ITRC Technical and Regulatory Guidance for In Situ Chemical Oxidation of Contaminated Soil and Groundwater, Second Edition, January 2005 (Oct 2016)
- DEEP Concurrence with ITRC Technical and Regulatory Guidance titled
Vapor Intrusion Pathway: A Practical Guideline, January 2007 (Oct 2017) - DEEP Concurrence with ITRC Technical and Regulatory Guidance titled Integrated DNAPL Site Strategy (IDSS-1); November 2011 and Integrated DNAPL Site Characterization and Tools Selection (ISC-1); April 2015 (Mar 2018)
Content Last Updated February 2, 2026