10.1 Stormwater Plan Types, Credentials, and Authority

Free CESSWI Certified Erosion, Sediment and Stormwater Inspector Study Guide 2026 Exam

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1 Chapter 1: CESSWI Program Overview, Scope of Practice & Professional Ethics

1.1 CESSWI Scope of Practice, Eligibility, and Exam Structure 1.2 Certification Renewal, PDH Requirements, and Audit Policies 1.3 EnviroCert Code of Ethics and Professional Conduct

2 Chapter 2: Federal, State, and Local Stormwater Regulations

2.1 Federal Water-Pollution History and Stormwater Phases 2.2 CWA Sections, Water Quality, and Related Federal Programs 2.3 EPA Construction Permit Coverage and Operational Clocks 2.4 Industrial MSGP and Municipal MS4 Programs 2.5 Regulatory Compliance, Enforcement Mechanisms, and Penalties

3 Chapter 3: Soil Mechanics, Erosion Processes, and Climatic Factors

3.1 Soil Formation, Horizons, and Geomorphology 3.2 Soil Texture, Mechanics, and Revegetation 3.3 Splash, Sheet, Rill, Gully, Channel Erosion, and Slope Movement 3.4 Wind Erosion, Sediment Transport, Climatic Erosivity, and Resource Impacts

4 Chapter 4: Hydrology, Runoff Characteristics, and Drainage Principles

4.1 The Hydrologic Cycle, Watershed Drainage Planning, and Precipitation 4.2 Hydrologic Soil Groups, Disturbed Profiles, and Time Parameters 4.3 Hydrograph Characteristics, Curve Numbers, and Runoff Estimation Equations

5 Chapter 5: Inspection Fundamentals, Duties, and Field Procedures

5.1 Inspector Roles, Scope of Authority, and Core Professional Skills 5.2 Pre-Inspection Document Review and Inspector Support Equipment 5.3 Systematic Field Inspection Sequence, Post-Inspection Meetings, and Follow-Through

6 Chapter 6: Inspection Elements for Active Construction Sites

6.1 Pre-Construction Meetings, Entrance Posting, and On-Site Document Inspections 6.2 Inspecting Active Construction Controls and Diagnosing BMP Failure Modes 6.3 Final Stabilization Verification, Final Inspections, and Notice of Termination

7 Chapter 7: Stormwater Monitoring, Field Sampling, and Chain of Custody

7.1 Permit Monitoring Triggers and Water-Quality Indicators 7.2 Sampling Preparation and Analytical Parameters 7.3 Sampling Locations, Collection Methods, and Field Meter Calibration 7.4 Sample Preservation, Data Recording, Shipping, and Chain of Custody

8 Chapter 8: Inspection Documentation, Reporting, and Map Management

8.1 Inspection Notes and Evidence Procedures 8.2 Objective Findings and Photographic Evidence 8.3 Proper Reporting Techniques and Corrective Action Log Management 8.4 Site Drawing (Map) Management, Compliance Resolution, and Enforcement Records

9 Chapter 9: Professional Communication and Site Safety for Inspectors

9.1 Communication Protocols in Pre-Construction, Post-Inspection, and O&M Meetings 9.2 Dealing with Difficult People, Problematic Sites, and Unpleasant Findings 9.3 Site Hazard Recognition: Physical, Biological, Trenching, and Confined Spaces 9.4 Hazardous Substances, Safety Data Sheets (SDS), Spill Response, and PPE

10 Chapter 10: Stormwater Plan Reading, Map Interpretation, and Site Calculations

10.1 Stormwater Plan Types, Credentials, and Authority 10.2 SWPPP Components and Permit Notifications 10.3 Civil Plan Sets, Legends, Phased Sequencing, and Living Site Maps 10.4 Topography, Contour Lines, Slope Calculations, and Plan Amendments

11 Chapter 11: BMP Framework, Site Planning, and Erosion Control Practices

11.1 Six Functional BMP Categories, Preservation of Vegetation, Phasing, and Tree Protection 11.2 Seeding and Sod Establishment 11.3 Hydroseeding and Hydromulching Inspection 11.4 Mulch and Rolled Erosion-Control Products 11.5 Tackifiers, Soil Binders, Roughening, and Temporary Cover

12 Chapter 12: Perimeter, Linear, and In-Water Sediment Control Practices

12.1 Perimeter & Sheet-Flow Sediment Barriers: Silt Fence, Fiber Rolls, Straw Bales, and Filter Dikes 12.2 Access & Roadside Sediment/Runoff Controls: Stabilized Entrances, Cut-Back Curbs, and Ditch Checks 12.3 In-Water & Dewatering Controls: Temporary Stream Crossings, Turbidity Curtains, and Sediment Bags

13 Chapter 13: Sediment Basins, Traps, and Runoff Conveyance Controls

13.1 Sediment Basins and Traps 13.2 Porous Baffles and Surface Skimmers 13.3 Runoff Conveyances: Diversions, Swales, Pipe Slope Drains, and Rock Check Dams 13.4 Riprap and Gabion Inspection 13.5 Retaining Walls, Outlet Protection, and Wet Ponds

14 Chapter 14: Storm Drain Inlet Protection and Good Housekeeping BMPs

14.1 Storm Drain Inlet Protection: At-Grade, Curb, Block & Gravel, Excavated, Fabric Drop, Gravel Bag, Stone Collar, and Pre-Manufactured 14.2 Good Housekeeping Part 1: Concrete Washout, Equipment Maintenance, Materials Management, and Secondary Containment 14.3 Good Housekeeping Part 2: Stockpiles, Dust Control, Wind Fence, Street Cleaning, Sanitary Waste, and Trash

15 Chapter 15: Post-Construction Stormwater Management BMPs

15.1 Vegetative & Structural Dispersion BMPs: Final Ground Cover, Headwalls, Level Spreaders, Filter Strips, and Riparian Buffers 15.2 Permeable Surfaces and Construction Protection 15.3 Infiltration, Bioretention, and Media Filters 15.4 Detention, Retention & Proprietary BMPs: Dry/Wet Basins, Wetlands, Inline Storage, Catch Basin Inserts, Vaults, and Manufactured Devices

10.1 Stormwater Plan Types, Credentials, and Authority

Key Takeaways Explain This Topic AI

SWPPP, ESCP, SWMP, and SPCC serve different functions.

Written signatory delegation must meet 40 CFR 122.22(b), including submission to the authority.

Certification alone does not create governmental enforcement or engineering authority.

Last updated: October 2026

Signatory and qualification checks

For the detailed method and approval qualifications, review the related CESSWI explanation .

Comparing the Primary Stormwater Plan Documents

Important

SAOP 10 Exam Priority (9–11% of Part B): Before stepping onto an active construction site, industrial facility, or municipal right-of-way, a Certified Erosion, Sediment and Stormwater Inspector (CESSWI) must verify which regulatory plan governs the property. Confusing an Erosion and Sediment Control Plan (ESCP) with a full Stormwater Pollution Prevention Plan (SWPPP) , a municipal Stormwater Management Program (SWMP) , or a Spill Prevention, Control, and Countermeasure (SPCC) Plan is one of the most frequently tested pitfalls on the CESSWI examination.

In professional stormwater inspection practice (covered in the CESSWI General Principles Review Manual , Chapter 11, Sections 11.1–11.4), four distinct regulatory documents govern land disturbance, industrial operations, municipal drainage networks, and bulk petroleum storage.

1. Stormwater Pollution Prevention Plan (SWPPP)

A Stormwater Pollution Prevention Plan (SWPPP) is a comprehensive, legally binding, living compliance document required under National Pollutant Discharge Elimination System ( NPDES ) Construction General Permits (CGP) and Industrial Multi-Sector General Permits (MSGP) . Unlike a static set of engineering blueprints, a SWPPP integrates two equally mandatory halves:

Physical Erosion and Sediment Control (ESC) Drawings and Specifications: Engineered plan sheets, phased site maps, and structural construction details designed to prevent soil detachment and trap suspended sediment before runoff leaves the disturbed footprint.

Pollution Prevention (P2) and Good Housekeeping Narrative: Written operational protocols governing chemical and material storage, concrete and stucco washout containment, fueling and equipment maintenance, spill prevention and response, dewatering treatment, routine inspection schedules, analytical sampling, signatory certifications, and Corrective Action Logs .

2. Erosion and Sediment Control Plan (ESCP) / Grading and Drainage Plan

An Erosion and Sediment Control Plan (ESCP) (often titled the Grading, Drainage, and Erosion Control Plan in municipal submittals) consists of the civil engineering drawing set, standard detail sheets, and technical specifications focused specifically on physical soil stabilization, runoff conveyance, and sediment trapping during earth-disturbing activities. Local municipalities and county conservation districts frequently require an approved ESCP before issuing a local grading or land-disturbance permit. On sites disturbing 1 acre 1\text{ acre} 1 acre or more (or smaller parcels within a common plan of development), the approved ESCP serves as the graphical and structural backbone embedded inside the broader NPDES construction SWPPP.

3. Stormwater Management Program / Plan (SWMP)

On the CESSWI examination, the acronym SWMP carries two distinct regulatory definitions depending on the permit context:

Municipal MS4 Stormwater Management Program (SWMP): The jurisdiction-wide written compliance document required under NPDES Phase I and Phase II Municipal Separate Storm Sewer System (MS4) permits . It details the ordinances, standard operating procedures, enforcement mechanisms, and measurable goals a city, county, or transportation agency uses to implement the Six Minimum Control Measures (MCMs) : (1) Public Education and Outreach, (2) Public Involvement and Participation, (3) Illicit Discharge Detection and Elimination ( IDDE ), (4) Construction Site Stormwater Runoff Control, (5) Post-Construction Stormwater Management in New Development and Redevelopment, and (6) Pollution Prevention / Good Housekeeping for Municipal Operations.

Post-Construction Stormwater Management Plan (SWMP): A site-specific civil engineering design and long-term Operation and Maintenance (O&M) Plan governing permanent post-construction stormwater control measures (such as wet retention ponds, dry extended detention basins, bioretention cells, permeable pavements, and subsurface infiltration vaults) that remain in service permanently after construction terminates.

4. Spill Prevention, Control, and Countermeasure (SPCC) Plan

A Spill Prevention, Control, and Countermeasure (SPCC) Plan is a federal oil pollution prevention document mandated under 40 CFR Part 112 (authorized by Clean Water Act Section 311), rather than an NPDES Section 402 stormwater permit. A construction project, quarry, or industrial facility must prepare and implement a standalone SPCC Plan if a spill could reasonably be expected to discharge oil in harmful quantities into navigable waters or adjoining shorelines AND the site exceeds either of two statutory storage thresholds:

Aboveground Oil Storage Threshold: Aggregate aboveground oil and petroleum storage capacity exceeding 1 , 320 gallons 1,320\text{ gallons} 1 , 320 gallons (counting only containers with a capacity of 55 gallons 55\text{ gallons} 55 gallons or greater , such as 55 -gallon 55\text{-gallon} 55 -gallon drums, double-walled skid tanks, and mobile refueler tankers parked in a stationary staging zone).

Underground Oil Storage Threshold: Completely buried underground oil storage capacity exceeding 42 , 000 gallons 42,000\text{ gallons} 42 , 000 gallons .

An SPCC Plan requires sized secondary containment (capable of holding at least 100 % 100\% 100% of the volume of the single largest tank inside the dike or berm plus sufficient freeboard—typically 110 % 110\% 110% total capacity—to contain a 25-year, 24-hour precipitation event) and must be certified by a licensed Professional Engineer (PE) (unless the site qualifies as a smaller Tier I or Tier II facility storing ≤ 10 , 000 gallons \le 10,000\text{ gallons} ≤ 10 , 000 gallons in aggregate with no single tank exceeding 5 , 000 gallons 5,000\text{ gallons} 5 , 000 gallons for Tier I, allowing qualified owner self-certification).

Comparison of Primary Stormwater and Spill Compliance Documents

Plan Document Governing Statutory / Permit Authority Primary Technical Focus Who Prepares & Certifies CESSWI Inspector Review Focus

SWPPP (Stormwater Pollution Prevention Plan) CWA § 402; NPDES CGP ( 40 CFR Part 450 ) & Industrial MSGP ( 40 CFR § 122.26 ) Combined physical ESC BMPs, P2 good housekeeping, spill response, inspections, and living red-line site maps Prepared by CPESC / PE / Qualified Person ; certified by Corporate Officer / Executive ( 40 CFR § 122.22 ) Verify on-site binder availability, signed NOI/certifications, phasing compliance, BMP maintenance, and 7-day corrective logs

ESCP (Erosion & Sediment Control Plan) Local municipal / county grading ordinances & state conservation district rules Engineered grading contours, drainage conveyances, stabilization specs, and structural sediment traps/basins Prepared by a qualified designer and sealed only by a professional with the legal sealing authority required by state/local law Verify field BMP locations, dimensions, trenching, slope ratios, and Limits of Disturbance against stamped plan sheets

SWMP (Stormwater Management Program / Plan) CWA § 402(p); Phase I & II MS4 Permits OR local post-construction O&M covenants Municipal implementation of the 6 MCMs across a city/county, OR permanent post-construction BMP O&M Prepared by municipal stormwater staff or civil engineer; signed by Ranking Elected Official / Executive Audit municipal MCM4/MCM5 enforcement, IDDE outfalls, municipal yards, or long-term permanent basin O&M compliance

SPCC Plan (Spill Prevention, Control & Countermeasure) CWA § 311; 40 CFR Part 112 (EPA Oil Pollution Prevention regulation) Bulk petroleum/oil storage ( > 1 , 320 gal > 1,320\text{ gal} > 1 , 320 gal aboveground in ≥ 55 -gal \ge 55\text{-gal} ≥ 55 -gal containers, or > 42 , 000 gal > 42,000\text{ gal} > 42 , 000 gal buried) Certified by a licensed Professional Engineer (PE) (or qualified self-certification if ≤ 10 , 000 gal \le 10,000\text{ gal} ≤ 10 , 000 gal ) Inspect bulk fuel tanks, 110 % 110\% 110% secondary containment berms, locked drain valves, overfill alarms, and oil spill kits