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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  • Soil Preservation Guidance for VOCs

    The Department of Energy & Environmental Protection (DEEP) has issued a final guidance document describing soil sample collection and preservation techniques designed to minimize volatile organic compound losses due to volatilization and biodegradation.

  • Well Receptor Guidance

    Guidance for persons who are required to investigate and remediate polluted or potentially polluted sites must consider the need to conduct a detailed water supply well receptor survey in order to assess whether an on-site groundwater pollution plume may, or can be reasonably expected to, adversely affect public or private water supply wells on and off-site.

  • Ecological Risk Assessment Guidance

    Ecological Risk Assessment is a structured scientific evaluation of the potential for harm to occur to ecological receptors as a result of exposure to some stressor, often an exposure to chemical contamination.

  • Trichloroethylene Developmental Risks

    As a result of the increased understanding of the developmental risks posed by TCE, the Connecticut Department of Public Health (CT DPH) and Department of Energy and Environmental Protection (DEEP) developed joint guidance in February 2015.

  • Green Remediation

    Greener cleanups can minimize the carbon footprint of site remediation by reducing the impact to energy, water and natural resources. The Department of Energy and Environmental Protection encourages the use of green and sustainable remediation practices in conducting site investigation and cleanup.

  • General Guidance on Development of Former Agricultural Properties

    General guidance for site development projects on former agricultural land in which persistent pesticides (primarily dieldrin, DDT and breakdown products, chlordane, arsenic) remain in soil at concentrations that approach or exceed the Connecticut Remediation Standard Regulations

  • Site Characterization Essentials

    Resources to help define the standard of care expected when characterizing a site under various clean-up programs in Connecticut.

  • Remediation Forms

    List of Remediation Forms by Program.

  • LEP Program Fact Sheet

    Information about administration of the Connecticut Licensed Environmental Professional Program for site investigation and remediation.

  • Verification Report Guidance Document

    The purpose of a Verification Report is to present the necessary documentation to support a verification rendered by a LEP and submitted by the certifying party, responsible party, or property owner, as applicable. The Verification Report is used by DEEP to assess the applicability and adequacy of the verification.

  • Covenant Not to Sue

    A Covenant Not to Sue is an agreement between DEEP and a prospective purchaser or owner of a polluted site that DEEP will not institute a claim against a party who has or will clean up that property.

  • Potable Water Program

    The Potable Water Program assists individuals whose private or public drinking water supply wells may be at risk of becoming contaminated or have become contaminated as a result of human activity. Many resources are included on this page.

  • Property Transfer Program

    The Property Transfer Law requires the disclosure of environmental conditions when certain properties and/or businesses ("establishments") are transferred. When an establishment is transferred, one of four Property Transfer Forms must be completed, signed, executed and filed with DEEP.

  • Significant Environmental Hazards

    Section 22a-6u of the Connecticut General Statutes (CGS) requires the owner of property which is the source or location of pollution causing a significant environmental hazard to notify the Department of Energy & Environmental Protection (DEEP) after they become aware of such conditions.

  • Quality Assurance and Quality Control

    An evaluation of the quality of the analytical data in relation to its intended use is important in order for the environmental professional to make decisions which are supported by data of known and sufficient quality.