CPSWQ case studies
CPSWQ · Put your knowledge to work in context.
The CPSWQ® (Certified Professional in StormWater Quality™) is a professional credential offered by EnviroCert International, Inc. (ECI), a non-profit organization. According to ECI, the CPSWQ identifies professionals with a comprehensive knowledge and understanding of stormwater and erosion control regulations, and certified stormwater professionals are recognized by state and federal regulators as qualified professionals in their field. The certification is intended to ensure certificants meet Federal requirements, including the US EPA NPDES definition of "Qualified Personnel," and have the knowledge and experience to ensure projects meet State and local regulatory requirements. The CPSWQ case studies are 5 cases and about 2,868 words.
1Final Stabilization Clock on a Nearly Built-Out Subdivision
An 18-acre residential subdivision has 12 acres of disturbed area and coverage under EPA's Construction General Permit. Nine acres are fully landscaped with established turf and no further earthwork; three acres remain active around unsold lots, including a 1.5-acre exposed slope where a silt fence is torn and sediment is entering a curb inlet.
626 words, about 3 min2Dry-Weather Flow in a Phase II MS4
A Phase II MS4 serves a 45,000-person city and operates an IDDE program under its NPDES permit. During a dry-weather outfall screening after 72 hours without rain, staff find a steady 15 gpm flow from a 36-inch storm sewer into a creek.
581 words, about 3 min3Benchmark Exceedance at a Metal Finisher
A metal-finishing facility operates under EPA's Multi-Sector General Permit with two outfalls. Outfall 001 drains the loading dock and roof; Outfall 002 drains the process area, including rinse tanks and a new rack line.
617 words, about 3 min4Trench Dewatering and Concrete Washout on a Linear Utility Project
A 6.5-acre water main replacement project disturbs 3.2 acres at any one time along 1.8 miles of road. The project has CGP coverage and a SWPPP.
502 words, about 3 min5Green Infrastructure Retrofit Under a New MS4 Permit
A city must comply with a new MS4 permit requirement to retrofit 20 acres of impervious area with green infrastructure over five years. Public works proposes a 1.8-acre bioretention basin in a parking lot that drains 2.4 acres of asphalt.
542 words, about 3 min