An old Cambridge project file that says RGP needs a date and a record chain. The City’s current Engineering Services page still uses that older name for one dewatering branch, while EPA’s current DRGP page explains the current federal record version. Identify the outside authorization and notices first, then find the separate Cambridge dewatering permit.
This is a records-reconciliation guide. It does not decide which permit a present project needs, whether a discharge is authorized, or whether a site complied with permit conditions.
Separate the outside authorization from the City permit
Cambridge says the outside route depends on where the site drains:
- Combined sewer area: the City directs the applicant to a Massachusetts Water Resources Authority permit route.
- Separated sewer and drainage area: the City says an EPA authorization is required before applying for the Cambridge permit.
- City record: after the applicable outside authorization, the applicant seeks a separate City temporary construction dewatering permit.
Do not merge these into one status. An MWRA or EPA record documents the outside authorization branch. The Cambridge permit documents the City’s own action. A building permit, inspection record, final inspection, and occupancy document remain separate again.
Date the RGP name before interpreting it
EPA states that the Massachusetts 2022 DRGP became effective August 31, 2022 for the combined Dewatering and Remediation General Permit. Its page says the old RGP expired April 8, 2022 and that legacy DGP and RGP permits were automatically terminated March 31, 2023.
Those dates help classify a reference; they do not determine a project’s complete history. A file can preserve an old acronym after a program changes. A later project may have a DRGP notice record, while an earlier project may point to a legacy RGP authorization and later termination evidence. Keep the document’s own date and identifier with the acronym.
The City’s current wording is therefore a routing clue, not proof that the former RGP remains the current federal authorization. Ask the agency to identify the applicable record version for the actual project period.
Preserve the federal notice sequence
EPA’s current DRGP page distinguishes three electronic notice records:
- NOI: the Notice of Intent that begins the authorization request or record trail.
- CNOI: a change notice that can modify information tied to that trail.
- NOT: the Notice of Termination that records termination of the authorization.
Save the permit version, site or project identity, authorization or NOI reference, and every notice date that belongs to the same record. A termination notice answers a federal authorization-status question. It does not show that the Cambridge permit was closed, that building inspections passed, or that a Certificate of Occupancy was issued.
If a number appears in the file, the permit-number lookup guide explains how to keep it attached to the correct agency and project. The Certificate of Occupancy versus permit guide explains why a permit or termination record cannot substitute for occupancy evidence.
Build a two-lane record worksheet
Keep the outside and City records side by side:
- Site identity: address, project name, responsible party, and approximate work period as shown in the source file.
- Drainage branch: combined or separated only when an official project record establishes it.
- Outside record: MWRA permit, legacy EPA RGP, or EPA DRGP version and identifier.
- Notice sequence: NOI, any CNOI, and NOT, with dates.
- City record: Cambridge dewatering permit or application number, issue/status information, and the exact local document needed.
- Remaining building question: building permit, inspection, final, or occupancy document, when relevant.
Do not infer the drainage branch from a map impression or from the acronym alone. The City and outside agencies should confirm the applicable route for the site.
Compare two fictional references without merging them
Suppose a fictional 2021 construction file cites an EPA RGP number and a Cambridge dewatering application. Preserve both numbers. Because the federal reference predates the 2022 DRGP, look for the legacy RGP authorization and any later termination evidence. Then read the Cambridge permit as its own record. The federal termination date cannot close the City file by inference.
Now suppose a fictional 2024 file cites a DRGP NOI and a City permit number. Follow the NOI, any change notice, and the termination notice under the DRGP version. Compare project identity and dates before linking them to the City permit. A missing change or termination record is a named federal-record gap; it is not a finding about the building permit or site condition.
Request the exact missing record
For the Cambridge Engineering record, provide the site, approximate work dates, known City permit or application number, outside authorization reference, and the exact missing City document. The current page lists sgeorge@cambridgema.gov and 617-349-4859 for Engineering Services. No contact or request was made for this guide.
For a missing federal record, EPA lists its Water Permits Branch contact: little.shauna@epa.gov or 617-918-1989. Identify the project, permit version, and specific authorization or notice you need. The page links electronic notice submission routes; this review did not establish a public notice-search interface. A failed access attempt does not prove that no authorization existed.
An outside authorization does not prove a Cambridge permit was issued or finalized. A Cambridge dewatering permit does not prove that a building permit passed inspections or that occupancy was approved. Preserve each record’s agency, version, number, date, and status before drawing a project-history conclusion.
Official Cambridge Engineering and EPA DRGP guidance checked October 5, 2026 (UTC). No site, project, drainage area, permit, NOI, change notice, termination, account, portal result, agency contact, or request was searched or submitted.