Delaware
Delaware issues its own construction general permit. We have read General Permit Authorization for Discharges from Construction Activities Under the NPDES and the Laws of the State of Delaware and list below the requirements we could cite to it, with the scope limits stated plainly. Screen your own acreage further down.
Who may prepare the plan
A credentialed preparer is requiredDelaware requires a credentialed preparer. Treat the generated document as a complete draft for that person to review, adopt and sign. It is not by itself a compliant filed plan.
Qualifying routes
Must sign and seal. The section 3.7 Standard Plan path is an alternative for qualifying small sites.
Coverage trigger
The project disturbs 3 acres, at or above the 1 acre threshold, so it needs permit coverage.
The trigger people miss is the second one. A half acre lot inside a 40 acre subdivision is covered, because the larger common plan of development or sale is what counts, not the lot.
Worked for a three acre site with the receiving water unconfirmed. Each line says why it attached to this site rather than in general. Check the notes above for the site sizes this permit does not cover.
Plan must be approved and NOI accepted prior to onset of construction activity
The Plan must be approved, and the NOI accepted by the Department prior to the onset of construction activity at the site for which coverage has been granted. Failure to obtain an approved Plan prior to construction activity constitutes a violation.
Submit before commencing construction activities; the exact lead time is not recorded for this id.
Why this applies here: This is the deadline for a new site. A transfer to a new operator or an emergency related project has a different deadline.
Owner/Operator of a New Site (i.e. a site where construction activities commence on or after March 11, 2026) — NOI Submittal Deadline: Prior to sediment and stormwater plan approval.
Submit the Notice of Termination once a termination condition is met; the exact deadline is not recorded for this id.
Once the conditions of termination of coverage are achieved in accordance with Part 1.F.2 of this CGP, the authorized permittee of the site must submit a Notice of Termination.
At least once every 7 calendar days.
Why this applies here: You have not confirmed whether the site discharges to an impaired or high quality water. If it does, the increased frequency applies instead and this answer changes.
For the purposes of this Part, the operator(s) must conduct maintenance inspections of erosion and sediment controls and constructed stormwater management measures at least weekly.
Responsible Personnel or a Certified Construction Reviewer (CCR), each having completed a Department-sponsored certification/training course
Why this applies here: This is why Basinwise cannot perform your inspections. The permit requires a trained person physically on the site.
The person(s) inspecting the site must be a responsible person or a CCR. The responsible person and CCR must have successfully completed a Department-sponsored certification course.
Immediately, meaning no later than the end of the next business day after activities cease.
Why this applies here: This applies at both land disturbance amounts.
Stabilization of disturbed areas must, at a minimum, be initiated immediately whenever any clearing, grading, excavating or other earth disturbing activities have permanently ceased on any portion of the site, or temporarily ceased on any portion of the site and will not resume for a period exceeding 14 calendar days.
Confirm the exact minor-fix deadline against the cited permit section.
When the problem does not require a new or replacement control or significant repair, the corrective action must be completed by the close of the next business day.
Confirm the exact major-fix deadline against the cited permit section.
When the problem requires a new or replacement control or significant repair, install the new or modified control and make it operational, or complete the repair, no longer than seven (7) calendar days from the time of discovery.
Provide and maintain a natural buffer or equivalent erosion and sediment controls near surface waters; the exact distance is not recorded for this id.
For any discharges to waters of the State located within 50 feet of the site's earth disturbances, one of the following alternatives must be achieved: a. Provide and maintain a 50-foot undisturbed natural buffer supplemented by erosion and sediment controls; or b. If it is infeasible to provide and maintain a 50-foot undisturbed natural buffer, implement erosion and sediment controls to achieve the sediment load reduction equivalent to a 50-foot undisturbed natural buffer.
Retain inspection reports and the corrective action log; the exact retention period is not recorded for this id.
Why this applies here: The clock runs from permit expiry or termination, not from when the record was written, so on a multi year project every record stays live for the whole project plus three years.
The operator(s) shall retain records of all information required by this CGP for a minimum of three (3) years following acceptance of the NOT.
Your acreage, your receiving water, your answer. Runs in your browser, nothing is transmitted.
This is EPA's list, from the 2022 Construction General Permit. It does NOT govern in Delaware, where the state issues its own permit and sets its own contents. It is here as a shape to expect, not as the requirement you will be held to.
Read the permit itself at the source document.
Delaware issues its own construction general permit, and we have read General Permit Authorization for Discharges from Construction Activities Under the NPDES and the Laws of the State of Delaware. The requirements listed on this page, such as inspection frequency, who may inspect, stabilisation, corrective action and record retention, are cited to that permit rather than to EPA's. Anything we have not transcribed is left out instead of assumed to match the federal rule, and the scope note on this page says which sites the permit does not cover. Confirm the current permit and any site-size variant with Delaware Department of Natural Resources and Environmental Control (DNREC), Division of Watershed Stewardship, Sediment and Stormwater Management Program.
Delaware requires a credentialed preparer. Treat the generated document as a complete draft for that person to review, adopt and sign. It is not by itself a compliant filed plan.
The inspection frequency is set by the Delaware construction general permit, which we have not read. Confirm it with Delaware Department of Natural Resources and Environmental Control (DNREC), Division of Watershed Stewardship, Sediment and Stormwater Management Program.
Screening is free. Pro generates the site specific plan document and retains the inspection and corrective action log.