Plan before Notice of Intent
Develop the plan before submitting your Notice of Intent for coverage.
You must develop a SWPPP consistent with Part 7 before submitting your NOI for coverage under this permit.
New Hampshire
SWPPP requirements in New Hampshire
EPA's 2022 Construction General Permit governs here, and we have read it. Below are the requirements that attach to a 3 acre site as a worked example, each cited to the permit section it came from. Screen your own acreage further down and they change with it.
Who may prepare the plan
No preparer credential foundNo preparer credential was found for New Hampshire. On what we have verified, a generated plan can be adopted by the operator without a credentialed signature. Local ordinances can still be stricter than state law.
EPA is the permitting authority. Coverage is under EPA's 2022 CGP, permit area NHR100000. CGP Part 9.1.1 states that if you disturb 100,000 square feet or more of contiguous area you must also comply with RSA 485-A:17 and Env-Wq 1500 and, unless exempt, apply for an Alteration of Terrain permit from NHDES; the threshold drops to 50,000 square feet within the protected shoreline. Whether the AoT regime imposes its own plan preparer credential was NOT verified (des.nh.gov refused automated retrieval), so confirm with NHDES. The 2022 CGP as modified became effective April 8, 2025 and expires February 16, 2027; confirm the successor permit near that date. Credential: the 2022 CGP imposes no SWPPP preparer credential. It does require inspections by a 'qualified person' (Part 4.1), which is an inspection credential, not a preparation credential.
No permit section cited. Confirm this with your permitting authority.
Coverage trigger
Worked through at 3 acres
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.
Read these before you act on the answer
- No preparer credential was found for New Hampshire. On what we have verified, a generated plan can be adopted by the operator without a credentialed signature. Local ordinances can still be stricter than state law.
- Basinwise does not perform the physical site inspections the permit requires. Those must be carried out on site by a qualified person.
- The source extraction contains the permit body (Parts 1-9) only. Appendices A (Definitions), B (Eligible Permit Areas), C (Small Construction Waivers), D (ESA Eligibility Procedures), E (Historic Property Screening), F (Buffer Requirements), G (Standard Permit Conditions), H (NOI Form), I (NOT Form), J (Chemical Treatment Request) and K (Turbidity Report Form) were NOT present in the extracted text. Every fact whose operative text lives only in an appendix is marked confidence "unverified" with a note naming the appendix to confirm.
What the permit requires of a New Hampshire site
Worked for a three acre site with the receiving water unconfirmed. Each line says why it attached to this site rather than in general.
Filing
Notice of Intent deadline
14At least 14 calendar days before commencing construction activities
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.
must submit to EPA a complete and accurate NOI in accordance with the deadlines in Table 1 prior to commencement of construction activities
Notice of Termination deadline
30Submit the Notice of Termination within 30 calendar days of meeting a termination condition.
You must submit an NOT within 30 calendar days after any one of the conditions in Part 8.2 occurs.
Inspections
Inspection frequency, option 1
7At least once every seven (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.
At least once every seven (7) calendar days; or
Inspection frequency, option 2
14Once every 14 calendar days AND within 24 hours of a storm event producing 0.25 inches or more of rain in a 24-hour period, or of a discharge caused by snowmelt from a storm event producing 3.25 inches or more of snow in a 24-hour period.
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.
Once every 14 calendar days and within 24 hours 67 of the occurrence of: A storm event that produces 0.25 inches or more of rain within a 24-hour period. If a storm event produces 0.25 inches or more of rain within a 24-hour period
Who may inspect
The person inspecting the site may be a member of your staff or a third party you hire. You are responsible for ensuring that any person conducting inspections is a "qualified person", meaning someone who has completed the training required by Part 6.3.
Why this applies here: This is why Basinwise cannot perform your inspections. The permit requires a trained person physically on the site.
You are responsible for ensuring that any person conducting inspections pursuant to this Part is a “qualified person.” A qualified person is someone who has completed the training required by Part 6.3.
Stabilisation
Initiate stabilisation
"Immediately" means as soon as practicable, but no later than the end of the next business day, following the day when the construction activities have temporarily or permanently ceased.
Why this applies here: This applies at both land disturbance amounts.
In the context of this provision, “immediately” means as soon as practicable, but no later than the end of the next business day, following the day when the construction activities have temporarily or permanently ceased.
Complete stabilisation
14Complete the installation of stabilization measures as soon as practicable, but no later than 14 calendar days after stabilization has been initiated.
Why this applies here: The project disturbs 3 acres in total, which is at or below five, so no phasing is needed for the 14 day deadline to apply. Above five acres open at any one time it shortens to 7 days.
soon as practicable, but no later than 14 calendar days
Corrective action
Corrective action, minor fix
By the close of the next business day after discovering the condition.
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; or
Corrective action, major fix
7Within 7 calendar days of discovery.
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, by no later than seven (7) calendar days from the time of discovery.
Buffers
Natural buffer
50Provide and maintain a natural buffer or equivalent erosion and sediment controls where a surface water lies within 50 feet of the disturbance.
Provide and maintain natural buffers and/or equivalent erosion and sediment controls for discharges to any receiving waters that is located within 50 feet of the site’s earth disturbances.
Records you must keep
Inspection report deadline
24Complete the inspection report within 24 hours of completing the site inspection.
You must complete an inspection report within 24 hours of completing any site inspection.
Corrective action log entries
Record the condition within 24 hours of identifying it, and record completion within 24 hours of completing the work.
Within 24 hours of identifying the corrective action condition, document the specific condition and the date and time it was identified.
Record retention
3Retain inspection reports and the corrective action log for at least 3 years from the date permit coverage expires or is terminated.
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.
You must retain all inspection reports completed for this Part for at least three (3) years from the date that your permit coverage expires or is terminated.
Eligibility screens
Endangered species screening
You must complete thisYou must document that you meet one of the endangered species protection criteria before coverage begins. This is a screening you complete, not one we can complete for you.
Historic properties screening
You must complete thisYou must complete the historic properties screening process and keep the documentation with your plan.
Receiving water sensitivity
Not enough informationYou have not confirmed whether the site discharges to a sediment or nutrient impaired water or a Tier 2, 2.5 or 3 water. This changes your inspection frequency, so confirm it before relying on the answer above.
Prohibited discharges
You must complete thisCertain discharges are prohibited outright, including concrete washout wastewater unless managed by an approved control. Review the prohibited discharge list against your site activities.
Screen a New Hampshire site now
Your acreage, your receiving water, your answer. Runs in your browser, nothing is transmitted.
What the plan must contain
Read out of the permit, section by section. This is the honest answer to whether a template is enough: the permit requires the document to be site specific, so a template is a starting shape and not a plan.
General SWPPP requirementPart 7.1Verified
- All operators associated with a construction site under this permit must develop a SWPPP consistent with Part 7 prior to their submittal of the NOI. The SWPPP must be kept up-to-date throughout coverage under this permit. If a SWPPP was prepared under a previous version of this permit, the operator must review and update it before submitting an NOI.
All Site OperatorsPart 7.2.1Verified
- Include a list of all other operators who will be engaged in construction activities at the site, and the areas of the site over which each operator has control.
Stormwater TeamPart 7.2.2Verified
- Identify the personnel (by name and position) on the stormwater team pursuant to Part 6.1, their individual responsibilities, and which members are responsible for conducting inspections. Include verification that each member has received the Part 6.2 training, and documentation that inspection personnel have received the Part 6.3 training (EPA inspector training certificates, or documentation of a current non-EPA program certification plus confirmation the program satisfies the Part 6.3b minimum elements).
Nature of Construction ActivitiesParts 7.2.3a - 7.2.3iVerified
- A description of the nature of your construction activities, including the age or dates of past renovations for structures undergoing demolition
- The size of the property (in acres, or length in miles if a linear construction site)
- The total area expected to be disturbed by the construction activities (to the nearest quarter acre, or nearest quarter mile if a linear construction site)
- A description of any on-site and off-site construction support activity areas covered by this permit
- The maximum area expected to be disturbed at any one time, including on-site and off-site construction support activity areas
- A description and projected schedule for: commencement of construction activities in each portion of the site (clearing and grubbing, mass grading, demolition, site preparation, final grading, and creation of soil and vegetation stockpiles requiring stabilization); temporary or permanent cessation of construction activities in each portion; temporary or final stabilization of exposed areas for each portion; and removal of temporary stormwater controls and construction equipment or vehicles and cessation of construction-related pollutant-generating activities
- A list and description of all pollutant-generating activities on the site, with an inventory of pollutants or pollutant constituents associated with each, taking into account where potential spills and leaks could occur and any known hazardous or toxic substances such as PCBs and asbestos that will be disturbed or removed
- Business days and hours for the project
- If conducting construction activities in response to a public emergency, a description of the cause of the emergency, information substantiating its occurrence (e.g. a State disaster declaration), and a description of the construction necessary to reestablish affected public services
Site MapParts 7.2.4a - 7.2.4kVerified
- Boundaries of the property
- Locations where construction activities will occur, including: locations of earth-disturbing activities (noting any phasing) including demolition; approximate slopes before and after major grading (noting any steep slopes); locations where sediment, soil or other construction materials will be stockpiled; any receiving water crossings; designated points where vehicles will exit onto paved roads; locations of structures and other impervious surfaces upon completion; and locations of on-site and off-site construction support activity areas
- Locations of any receiving waters within the site and all receiving waters within one mile downstream of the site's discharge point(s), identifying whether any are listed as impaired or identified as a Tier 2, Tier 2.5 or Tier 3 water
- Any areas of Federally listed critical habitat within the action area of the site
- Type and extent of pre-construction cover on the site (e.g. vegetative cover, forest, pasture, pavement, structures)
- Drainage patterns of stormwater and authorized non-stormwater before and after major grading activities
- Stormwater and authorized non-stormwater discharge locations, including discharges to storm drain inlets (noting whether the inlet conveys stormwater to a sediment basin, sediment trap or similarly effective control), discharges directly to receiving waters, and locations where turbidity benchmark monitoring will take place
- Locations of all potential pollutant-generating activities identified in Part 7.2.3g
- Designated areas where construction wastes covered by the Part 2.3.3e.ii exception will be stored
- Locations of stormwater controls, including natural buffer areas and any shared controls utilized to comply with this permit
- Locations where polymers, flocculants or other treatment chemicals will be used and stored
Non-Stormwater DischargesPart 7.2.5Verified
- Identify all authorized non-stormwater discharges in Part 1.2.2 that will or may occur.
Procedures for Inspection, Maintenance, and Corrective ActionParts 7.2.7a - 7.2.7eVerified
- The inspection schedule you will follow, based on whether your site is subject to Part 4.2 or Part 4.3, or whether it qualifies for any of the reduced inspection frequencies in Part 4.4
- If conducting inspections under Part 4.2.2, Part 4.3 or Part 4.4.1b, the location of the rain gauge or the address of the weather station you will use to obtain rainfall data
- If reducing your inspection frequency in accordance with Part 4.4.1b, the beginning and ending dates of the seasonally defined arid period for your area or the valid period of drought
- If reducing your inspection frequency in accordance with Part 4.4.3, the beginning and ending dates of frozen conditions on your site
- Any maintenance or inspection checklists or other forms that will be used
Procedures for Turbidity Benchmark Monitoring from Dewatering Discharges (if applicable)Part 7.2.8Verified
- If required to comply with the Part 3.3 turbidity benchmark monitoring requirements, describe the procedures you will follow to collect and evaluate samples, report results to EPA, keep records of monitoring information, and take corrective action when necessary. Include the specific type of turbidity meter you will use and any manuals or manufacturer instructions on how to operate and calibrate it. Describe any coordinating arrangement with other permitted operators on the same site, including which parties are tasked with specific responsibilities. If EPA has approved an alternate turbidity benchmark, include the data and documentation relied on to request it.
Compliance with Other RequirementsParts 7.2.9a - 7.2.9cVerified
- Threatened and Endangered Species Protection: include the documentation required in the Endangered Species Protection section of the NOI in NeT, or the ESA worksheet in Appendix D, supporting your eligibility
- Historic Properties: include the documentation required in Appendix E supporting your eligibility with regard to the protection of historic properties
- Safe Drinking Water Act Underground Injection Control (UIC) requirements: if using infiltration trenches, commercially manufactured pre-cast or pre-built proprietary subsurface detention vaults/chambers/devices designed to capture and infiltrate stormwater, or drywells, seepage pits or improved sinkholes, document any contact with the applicable State agency or EPA Regional Office responsible for underground injection wells. Such controls would generally be considered Class V UIC wells
SWPPP CertificationPart 7.2.10Verified
- Your signatory must sign and date your SWPPP in accordance with Appendix G, Part G.11.
Post-Authorization Additions to the SWPPPParts 7.2.11a - 7.2.11cVerified
- A copy of your NOI submitted to EPA along with any correspondence exchanged between you and EPA related to coverage under this permit
- A copy of the acknowledgment letter you receive from NeT assigning your NPDES ID (i.e. permit tracking number)
- A copy of this permit (an electronic copy easily available to the stormwater team is also acceptable)
Read the permit itself at the source document.
What people ask about SWPPP requirements in New Hampshire
What are the SWPPP requirements in New Hampshire?
New Hampshire is covered by EPA's 2022 Construction General Permit. A covered site must develop a written site specific plan before filing a Notice of Intent, inspect on the permit's schedule, initiate stabilisation immediately when work stops in an area, complete it within seven or 14 calendar days depending on the disturbed area, act on deficiencies within the corrective action deadlines, and retain inspection and corrective action records for three years after coverage ends.
Who may prepare a SWPPP in New Hampshire?
No preparer credential was found for New Hampshire. On what we have verified, a generated plan can be adopted by the operator without a credentialed signature. Local ordinances can still be stricter than state law.
How often must a New Hampshire site be inspected?
Either once every seven calendar days, or once every 14 calendar days plus within 24 hours of a storm producing 0.25 inches or more of rain. Discharging to a sediment or nutrient impaired water or a Tier 2, 2.5 or 3 water forces the increased frequency instead.
The permit makes you keep the record, not just know the answer
Screening is free. Pro generates the site specific plan document and retains the inspection and corrective action log.