Stormwater Permit Compliance Analyzer
Analyze stormwater plans against regulatory requirements and generate compliance documentation
What You Can Do
You can systematically evaluate stormwater management plans against EPA Construction General Permit (CGP) requirements, state NPDES Phase I/II standards, and local municipal design standards. Claude analyzes BMP sizing, erosion control measures, stormwater quality volumes, and peak discharge compliance, then generates compliance matrices and documentation suitable for permit applications, regulatory submittals, and responses to agency comments.
Features
cross-references site plans against federal CGP, state NPDES, and local design standards with pass/fail assessments
evaluates erosion control and stormwater treatment measures for sizing, placement, and performance standards compliance
assesses WQv, peak discharge, and detention sizing against permit thresholds and local requirements
flags missing calculations, design justifications, maintenance plans, or monitoring protocols required for permit approval
drafts technical responses to regulatory requests for additional information (RAI) with supporting calculations and citations
evaluates erosion control adequacy across construction phases and seasonal requirements
analyzes whether proposed LID measures, green infrastructure, or alternative BMPs meet jurisdiction-specific performance criteria
produces executive summaries of findings formatted for permit applications and stakeholder communication
Example Output
Example 1: SWPPP Compliance Matrix
| Permit Requirement | SWMPP Addresses? | Design Standard Met | Notes |
|---|---|---|---|
| Sediment fence installation at disturbed perimeter | ✓ | ✓ | Detailed in Section 3.2; spacing per EPA CGP requirements |
| Stormwater quality volume (WQv = 1.2 in) | ✓ | ✗ | Proposed detention pond: 0.8 in; requires 0.4 in additional capacity |
| Construction entrance stabilization | ✓ | ✓ | Construction road sweeping scheduled 3x/week |
Example 2: Documentation Gap Report Missing Items for Permit Application:
- Post-construction stormwater O&M plan (required per local ordinance Section 4.5)
- Detailed BMP inspection frequency schedule (EPA CGP requires weekly during active construction)
- Design engineer certification and responsible party contact
Example 3: Regulatory Comment Response Comment: "Stormwater quality treatment volume calculations do not clearly demonstrate compliance with state volume reduction standard."
Response: WQv calculation revised to 1.2 inches based on [local impervious acreage]. Proposed bioretention system (0.85 acres) and extended detention basin (0.35 acres) provide combined treatment of 1.22 inches, exceeding the 1.2-inch requirement by 0.02 inches. Detailed calculations provided in revised Appendix C.
What's Included
- SKILL.md: Core instruction file with regulatory framework guidance and analysis workflows
- Compliance Matrix Template: Pre-built spreadsheet structure for EPA CGP, state NPDES Phase I/II, and local standard cross-referencing
- SWMPP/SWPPP Review Checklist: 50+ point inspection list covering erosion control, stormwater treatment, calculations, and documentation
- BMP Sizing Verification Worksheet: Framework for evaluating sediment fence, inlet protection, detention basin, and bioretention adequacy
- Documentation Gap Tracker: Template for logging missing calculations, certifications, O&M plans, and inspection schedules
Who It's For
- Environmental engineers reviewing SWMPP/SWPPP submittals for compliance and permit readiness
- Stormwater professionals preparing permit applications and regulatory submittals for construction projects
- Project managers tracking stormwater compliance requirements across design and construction phases
- Municipal reviewers evaluating contractor-submitted stormwater plans against local design standards
- Compliance specialists responding to regulatory comments and requests for additional information (RAI)
Best For
- Pre-application stormwater plan reviews and compliance gap analysis
- Generating compliance matrices for EPA CGP and state NPDES permitting
- Evaluating BMP sizing, placement, and erosion control measure adequacy
- Identifying missing documentation, calculations, and design justifications before permit submission
- Drafting technical responses to regulatory agency comments and requests for clarification
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