Stormwater Management Plan

STORMWATER MANAGEMENT PLAN

Table of Contents

1. Project/Facility Information
2. Permit Coverage and Regulatory Framework
3. Site Description and Drainage Analysis
4. Pollution Prevention Measures
5. Structural BMPs
6. Non-Structural BMPs
7. Inspection and Monitoring
8. Recordkeeping and Reporting
9. Certifications

PART I: PROJECT/FACILITY INFORMATION

Project/Facility Name: [________________________________]

Address:
Street: [________________________________]
City: [________________________________]
State: [____] ZIP: [__________]
County: [________________________________]

Property Owner:
Name: [________________________________]
Phone: [________________________________]
Email: [________________________________]

Operator (if different from Owner):
Name: [________________________________]
Phone: [________________________________]
Email: [________________________________]

Plan Type:
☐ Construction Stormwater Pollution Prevention Plan (SWPPP)
☐ Post-Construction Stormwater Management Plan
☐ Industrial Stormwater Pollution Prevention Plan
☐ MS4 Stormwater Management Program (SWMP)
☐ Combined Plan

Plan Preparer:
Name: [________________________________]
Firm: [________________________________]
Professional License No.: [________________________________]
Phone: [________________________________]

Date Prepared: [__/__/____]
Date Last Revised: [__/__/____]

PART II: PERMIT COVERAGE AND REGULATORY FRAMEWORK

A. Applicable Permits

NPDES Permit Number: [________________________________]
State Permit Number (if different): [________________________________]
Permit Effective Date: [__/__/____]
Permit Expiration Date: [__/__/____]

Permit Type:
☐ EPA Construction General Permit (CGP)
☐ EPA Multi-Sector General Permit (MSGP) — Sector(s): [________________________________]
☐ State General Permit — Type: [________________________________]
☐ Individual NPDES Permit
☐ Phase I MS4 Permit
☐ Phase II MS4 Permit (Small MS4)

B. Receiving Waters

C. Regulatory Triggers

Construction Sites:
☐ Site disturbance ≥ 1 acre (or part of a common plan of development ≥ 1 acre)
☐ Site disturbance ≥ 5 acres (additional requirements may apply)

Industrial Facilities:
☐ SIC Code(s): [________________________________]
☐ Facility involves industrial activities as defined in 40 CFR § 122.26(b)(14)

PART III: SITE DESCRIPTION AND DRAINAGE ANALYSIS

A. Site Characteristics

Total Site Area: [________________________________] acres
Disturbed Area: [________________________________] acres
Impervious Surface (existing): [________________________________] acres / [____]%
Impervious Surface (proposed): [________________________________] acres / [____]%

Topography: [________________________________]
Soil Type(s) (NRCS classification): [________________________________]
Hydrologic Soil Group(s): ☐ A ☐ B ☐ C ☐ D

Depth to Groundwater: [________________________________]
Depth to Bedrock: [________________________________]

B. Pre-Development Drainage

C. Post-Development Drainage

Design Storm Event: [________________________________] (e.g., 2-year, 24-hour; 10-year, 24-hour)

PART IV: POLLUTION PREVENTION MEASURES

A. Construction Phase BMPs (if applicable)

Erosion Controls:
☐ Preservation of existing vegetation
☐ Phased grading/disturbance
☐ Temporary seeding/mulching
☐ Erosion control blankets/mats
☐ Slope protection measures
☐ Dust control (watering, chemical stabilization)

Sediment Controls:
☐ Silt fencing
☐ Sediment basins
☐ Sediment traps
☐ Check dams
☐ Inlet protection
☐ Construction entrance/exit stabilization
☐ Fiber rolls/wattles

Waste Management:
☐ Concrete washout area designated
☐ Hazardous material storage area designated
☐ Sanitary waste facilities provided
☐ Solid waste dumpsters provided
☐ Spill prevention and response kit on-site

B. Post-Construction / Operational BMPs

Good Housekeeping Practices:
☐ Regular sweeping of paved areas
☐ Proper storage of materials and chemicals
☐ Vehicle and equipment maintenance procedures
☐ Spill prevention, control, and countermeasure plan
☐ Employee training program

PART V: STRUCTURAL BMPS

Common Structural BMP Types:
☐ Detention/retention basin
☐ Bioretention/rain garden
☐ Constructed wetland
☐ Infiltration basin/trench
☐ Permeable pavement
☐ Green roof
☐ Sand filter
☐ Hydrodynamic separator
☐ Vegetated swale/bioswale
☐ Underground storage/infiltration
☐ Other: [________________________________]

PART VI: NON-STRUCTURAL BMPS

☐ Stormwater education and outreach programs
☐ Public participation/involvement opportunities
☐ Illicit discharge detection and elimination program
☐ Post-construction runoff management ordinances
☐ Pollution prevention/good housekeeping for municipal operations
☐ Low-impact development (LID) design standards
☐ Riparian buffer requirements
☐ Pet waste management program
☐ Other: [________________________________]

PART VII: INSPECTION AND MONITORING

A. Inspection Schedule

Construction Sites:
☐ Every 7 calendar days
☐ Within 24 hours after a rain event of 0.25 inches or more
☐ Every 14 days and within 24 hours after a rain event of 0.5 inches or more
☐ Per state-specific schedule: [________________________________]

Operational Facilities:
☐ Quarterly visual monitoring of outfalls
☐ Annual comprehensive site inspection
☐ Benchmark monitoring per MSGP requirements
☐ Other: [________________________________]

B. Monitoring Requirements

C. Corrective Actions

If inspection or monitoring reveals deficiencies:

1. Document the deficiency in the inspection log
2. Implement corrective action within [____] hours/days
3. Document corrective action completion
4. Report to permitting authority if required by permit

PART VIII: RECORDKEEPING AND REPORTING

A. Required Records

☐ Copy of NPDES permit and this Plan maintained on-site
☐ Inspection reports retained for [____] years
☐ Monitoring data retained for [____] years
☐ Training records retained for [____] years
☐ Spill/release reports

B. Reporting Requirements

☐ Notice of Intent (NOI) filed — Date: [__/__/____]
☐ Annual reports due by: [________________________________]
☐ Discharge Monitoring Reports (DMRs) due: [________________________________]
☐ Notice of Termination (NOT) required upon project completion/cessation
☐ Exceedance/noncompliance reporting within [____] hours

PART IX: CERTIFICATIONS

Plan Preparer Certification

I certify that this Stormwater Management Plan has been prepared in accordance with applicable NPDES permit requirements and accepted engineering practices.

Signature: [________________________________]
Printed Name: [________________________________]
Title/License No.: [________________________________]
Date: [__/__/____]

Operator Certification

I certify that I understand the terms and conditions of the applicable NPDES permit and this Plan, and that I will implement the Plan and comply with all permit requirements.

Signature: [________________________________]
Printed Name: [________________________________]
Title: [________________________________]
Date: [__/__/____]

SOURCES AND REFERENCES

• 33 U.S.C. § 1342, Clean Water Act § 402 (NPDES Permits)
• 40 CFR Part 122.26, Stormwater Discharges Requiring NPDES Permits
• 40 CFR Part 122.34, Phase II MS4 Minimum Control Measures
• EPA, Developing a Stormwater Pollution Prevention Plan (SWPPP), https://www.epa.gov/npdes/developing-stormwater-pollution-prevention-plan-swppp
• EPA, Municipal Separate Storm Sewer System (MS4), https://www.epa.gov/npdes/stormwater-discharges-municipal-sources
• EPA, Construction General Permit (CGP), https://www.epa.gov/npdes/stormwater-discharges-construction-activities
• EPA, Multi-Sector General Permit (MSGP), https://www.epa.gov/npdes/stormwater-discharges-industrial-activities