Who can prepare a SWPPP? Preparer requirements by rule
Updated
Two different questions get mixed together constantly: who can inspect under a SWPPP (covered in the inspector qualifications guide) and who can write the plan in the first place. This guide covers the second one.
The short answer: under the federal permit, anyone capable of producing a compliant plan may prepare it, but several states require specific credentials or a professional stamp, and regardless of who writes it, the operator who signs the certification owns every word.
The federal baseline: competence, not credentials
The EPA 2022 Construction General Permit sets no license or certification requirement for SWPPP preparers. What it requires is a plan that actually meets Part 7's content standards: the stormwater team, site maps, control designs, stabilization deadlines, inspection procedures, and eligibility screening documented in full (see what goes in a SWPPP).
In practice, most federal-jurisdiction SWPPPs are still written by civil engineers or environmental consultants, because an inadequate plan is itself a permit violation and control design (basin sizing, buffer calculations) is engineering work.
States that require specific preparer credentials
| State | Preparer requirement |
|---|---|
| California | SWPPP must be prepared by a certified Qualified SWPPP Developer (QSD), a credential layered on top of a PE, geologist, landscape architect, or CPESC/CPSWQ certification |
| Rhode Island | The Soil Erosion and Sediment Control plan must be stamped by a PE, CPESC, CPSWQ, or Registered Landscape Architect |
| Washington | No named preparer credential; the owner or lessee may designate an engineer, architect, or contractor to prepare the SWPPP but retains responsibility. The CESCL credential applies to site inspections, not plan preparation |
| Georgia | Erosion, Sedimentation and Pollution Control Plans must be prepared by a GSWCC Level II certified design professional |
| Most other states | No named credential, but the plan must meet the state permit's content standards; agencies expect professional preparation on complex sites |
Permits change, so verify against the current permit text linked from your state's requirements page before assigning plan preparation.
Common preparer credentials, decoded
- PE (Professional Engineer): the default for plans involving engineered controls: sediment basins, diversion design, dewatering systems.
- CPESC (Certified Professional in Erosion and Sediment Control): the most widely recognized national erosion-control credential; accepted by many state programs.
- CPSWQ (Certified Professional in Storm Water Quality): water-quality-focused sibling of the CPESC.
- QSD (Qualified SWPPP Developer): California-specific developer credential; the QSP (Practitioner) is the related field/inspection credential.
- RLA (Registered Landscape Architect): accepted as a preparer or plan-stamper in several states, including Rhode Island and New York's inspector rules.
Whoever writes it, the operator owns it
The NOI certification — signed by the operator, not the consultant — states under penalty of law that the plan meets the permit. If the SWPPP understates disturbed acreage or omits a discharge point, the enforcement action lands on the operator. Choosing a preparer is delegation of work, not of liability.
The same logic runs through the life of the project: the plan must be kept current as phases change, and the operator is responsible for every update. A plan written well in March and never amended is a violation by August on most active sites.
After the plan is written
Preparation is a one-time deliverable; the plan then generates the recurring work: routine and rain-triggered inspections, corrective actions, and records. RainCheck picks up at that handoff: it stores the SWPPP with the site, monitors rain against your state's trigger, and keeps the signed inspection record the plan requires. The preparer writes the plan; RainCheck runs the program it creates.
Common questions
Can I write my own SWPPP?
Under the federal CGP, yes: no credential is required, but the plan must fully meet Part 7's content requirements and an inadequate plan is itself a violation. Several states require certified preparers (California's QSD) or a professional stamp (Rhode Island), so check your state permit first.
What is a QSD?
A Qualified SWPPP Developer, California's required credential for preparing SWPPPs under its Construction General Permit. It layers a state exam on top of an underlying license or certification (PE, geologist, landscape architect, CPESC, or CPSWQ). The related QSP credential covers field implementation and inspections.
Does a SWPPP need a PE stamp?
Not under the federal permit. Some states require a stamp or specific credential (Rhode Island requires the erosion control plan be stamped by a PE, CPESC, CPSWQ, or RLA), and engineered controls like sediment basins generally involve a PE regardless of the SWPPP rule.
Who is legally responsible for the SWPPP, the preparer or the operator?
The operator. The NOI certification is signed by the operator under penalty of law, so enforcement for an inadequate or out-of-date plan lands on the operator even when a consultant wrote it.