General Permit for In Situ Remediation
- Qualitative or quantitative evidence of pollution is required for any authorization pursuant to a general permit for in-situ remediation.
- A registration must be submitted to DEEP and may need to be approved for an activity to be authorized pursuant to these general permits.
- The general permits allow for DEEP issuance of a certificate of coverage in lieu of an approval of registration for authorization of certain activities, and also in some cases, provides for limited self-implementation upon registration.
- Reporting and recordkeeping requirements for discharge and monitoring activities are specified, and combined reporting is allowed when reporting is also required under DEEP remedial program requirements.
An easy-to-use two page form has been developed for General Permit reporting.
In Situ Remediation Report of Monitoring Activity Form (the Electronic Transmittal Form must be attached as the cover page)
New Procedure! Send a copy of the permit registration form and the fee to DEEP, CPPU, 79 Elm St., Hartford, CT 06106-5127. Upload the Electronic Transmittal Form and the permit registration form to the Connecticut Secure File Transfer (SFT) website.
The General Permit for In Situ Groundwater Remediation: Enhanced Aerobic Biodegradation authorizes oxygenation of groundwater at a controlled rate to enhance in situ aerobic degradation of organic pollutants and allows the use of several different sources of oxygen and delivery methods. Supplemental nutrients or cultured bacteria may also be added under the general permit framework. Chemical oxidation of pollution is not authorized under this general permit; and the permit incorporates limits on ozone and hydrogen peroxide to ensure their use solely as an oxygen source for biodegradation. Following submittal of all required materials for this general permit, the registrant, in most cases, will be notified in writing if the department will authorize the activity (with or without conditions) or if the registration has been rejected.
In situ remedial activities not covered by a general permit may still be authorized through the issuance of an individual groundwater discharge permit or a temporary discharge authorization, as appropriate for the proposed activity. (Note: if applying for an individual groundwater discharge permit to implement remediation of a site, DEEP recommends contacting DEEP Remediation Division staff prior to the application preparation.)