DEEP headquarters at 79 Elm Street in Hartford has partially re-opened to staff and members of the public as of Tuesday, February 3. The DEEP records room has re-opened. The DEEP Central Permit Processing Unit (CPPU) will be open to the public starting on Wednesday, Feb. 4. For updates, click here

Remediation Site Clean Up

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  • Removal from SEMS Potential Superfund List

    If remedial action has been completed through one or more DEEP Remediation Programs or an interested party has committed to remediate a site through a DEEP Remediation Program, DEEP can request that the Environmental Protection Agency (EPA) remove any active federal superfund site from the Superfund Enterprise Management System (SEMS), formerly CERCLIS or that EPA offer a "comfort letter" stating it will not take further action to list the site on the NPL.

  • State Superfund Program

    The State Superfund Program oversees and provides funding for the remediation of contaminated sites. The use of State funds for remediation at hazardous waste sites is determined by calculating a superfund priority score in accordance with Connecticut Regulations.

  • Federal Superfund Sites in Connecticut

    Information on the Federal Superfund sites in Connecticut.

  • Property Transfer Schedule Extension

    A Property Transfer Act schedule extension can be requested to address circumstances that warrant an extension of time. Generally, the Department will review a request in terms of whether the Certifying Party has made continuous, best efforts to complete milestones by the applicable deadlines.

  • Property Transfer Program Fact Sheet

    Guidance for complying with the Property Transfer Act requirements, including which forms are required for particular circumstances and applicable fees.

  • GAC Filter System for Private Wells

    GAC filter systems are used to remove semi-volatile and volatile organic compounds (such as those found in gasoline, heating oil, and chlorinated solvents), as well as some pesticides, from polluted drinking water. Explanation of how these systems work, maintenance, and monitoring of GAC systems.

  • Siting Clean Energy on Brownfields

    Renewable energy, such as wind and solar, can be sited on land that has been or is perceived to be polluted and is now underused. These properties, called brownfields, may be particularly attractive because these types of renewable energy installations may require large sites, and brownfields are usually large sites located in areas with the existing infrastructure needed to support development.

  • Current Projects

    Up-to-date information regarding high profile remediation projects in Connecticut.

  • Contaminants of Emerging Concern

    An emerging contaminant is a chemical or material characterized by a perceived, potential, or real threat to human health or the environment or by a lack of published health standards. General information on emerging contaminants, as well as perchlorate, nanomaterials, and pharmaceuticals and personal care products.

  • RCRA Corrective Action, Closure, and Stewardship

    Connecticut is authorized for RCRA Closure and Corrective Action, which requires facility owners and operators to clean up properties that have treated, stored, or disposed of hazardous waste. Information regarding financial assurance, ecological risks, RCRA closure, and various guidance documents.

  • Voluntary Remediation Programs

  • Requesting APS and Alternative Criteria

    The Remediation Standard Regulations (RSRs), contain numeric cleanup standards for 88 substances. When a contaminant at a site is not one of the 88 substances, Additional Polluting Substance (APS) criteria must be approved by the Commissioner to complete cleanup at the site under the RSRs. When the RSRs contain criteria for a substance but a party believes different numeric criteria are appropriate for a specific site, that party may request approval of Alternative Criteria.

  • Proposed Amendments to the Remediation Standard Regulations and Environmental Use Restriction Regulations

    The Remediation Division of the Bureau of Water Protection and Land Reuse is proposing amendments to Sections 22a-133k-1 through 22a-133k-3 of the Regulations of Connecticut State Agencies, the Remediation Standard Regulations (RSRs). The RSRs specify the standards for the remediation of environmental pollution in soil and groundwater.

  • Engineered Control Variances

    An Engineered Control is a permanent physical structure designed to safely isolate pollutants which would otherwise not comply with the self-implementing remedial options allowed in the Connecticut Remediation Standard Regulations (RSRs).

  • Technical Impracticability Variance

    A Technical Impracticability Variance is a remedial option provided under the Connecticut Remediation Standard Regulations (RSRs) when non-aqueous phase liquids cannot be contained or removed in accordance with Section 22a-133k-2(g) of the RSRs, remediation to the extent technically practicable has reduced the concentration of pollutants in groundwater to steady-state concentrations, or as otherwise specified in EPA guidance.