CESSWI Study Guide 2026
Everything you need to pass the CESSWI exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 CESSWI Exam Format at a Glance
📚 CESSWI Topics to Study (69)
✍️ Sample CESSWI Questions & Answers
1. Under EPA enforcement authority, which type of penalty can be assessed for each day a construction site is in violation of its NPDES stormwater permit?
EPA can assess civil administrative penalties of up to $25,000 per day per violation for NPDES permit noncompliance under CWA Section 309.
2. In a SWPPP, the 'good housekeeping' section typically covers:
Good housekeeping provisions in a SWPPP address storage, handling, and disposal of construction materials and wastes to prevent pollutants from reaching storm water.
3. On a 2:1 slope where vegetation needs to be established, which Rolled Erosion Control Product (RECP) would be most suitable to protect the seed and soil until the vegetation takes root?
Erosion control blankets (ECBs) made of natural fibers like straw or coconut are specifically designed to protect seed and soil on slopes, slow water velocity, and promote germination. A lightweight netting alone offers minimal protection. A TRM is typically for high-flow channels or permanent reinforcement, which is more than needed for establishing simple vegetation. Loose straw mulch is less effective on a steep 2:1 slope and would likely require netting or tackifier to hold it in place.
4. Under good housekeeping practices, how should paints, solvents, and other hazardous construction chemicals be stored on site?
Hazardous chemicals must remain in original labeled containers, be stored under cover within secondary containment, and be kept away from storm drains to prevent spills and runoff contamination.
5. What does a SWPPP stand for?
In the context of stormwater management and the CESSWI certification, SWPPP stands for Storm Water Pollution Prevention Plan. This comprehensive document outlines the Best Management Practices (BMPs) and procedures a construction site will implement to prevent stormwater pollution. It is a critical component of stormwater permits, detailing how a site will comply with environmental regulations.
6. Which factor in the RUSLE equation accounts for the ability of soil to resist detachment and transport by rainfall?
The K factor in RUSLE represents soil erodibility, reflecting the soil's susceptibility to detachment and transport by rainfall and runoff.