CEPSCI Study Guide 2026
Everything you need to pass the CEPSCI 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.
CEPSCI exam key facts
- The in-person CEPSCI exam has 80 questions. Source
- Passing the in-person CEPSCI exam requires 60 of 80 questions correct (75%). Source
- Each CEPSCI attendee gets two exam attempts and must retake the class after two failed attempts. Source
- CEPSCI certification lasts until 6/30 four years later if the class and exam are taken before 6/30, and five years if taken after. Source
📋 CEPSCI Exam Format at a Glance
📚 CEPSCI Topics to Study (30)
✍️ Sample CEPSCI Questions & Answers
1. When a CEPSCI inspector finds a failed silt fence during an inspection, the first required action is to:
Inspectors must document the deficiency and ensure corrective action is completed within the timeframe required by the permit, often 7 days or within 24 hours for active discharges.
2. What soil amendment is most commonly applied before seeding to improve germination on disturbed sites?
Soil testing guides the application of lime to adjust pH and fertilizer to provide nutrients, both of which are critical for successful seed germination and establishment on disturbed soils.
3. Why is it important to minimize runoff velocity on a construction site?
Runoff velocity directly determines erosive energy; slower flows have less capacity to detach and transport soil particles, reducing overall sediment production and transport.
4. What is 'bioretention' (rain garden) as a post-construction BMP?
Bioretention cells use engineered soil media and native plants to filter stormwater pollutants, reduce runoff volume through infiltration, and attenuate peak flows.
5. How does the slope length factor (L) in the USLE affect predicted soil loss?
As runoff travels down a longer slope, it accumulates more volume and velocity, increasing its erosive energy and the quantity of sediment it can transport.
6. What is the purpose of a diversion dike on a construction site?
Diversion dikes are earthen berms that redirect surface runoff away from disturbed areas or channel it toward a sediment control BMP to prevent uncontrolled runoff.
🎯 Free CEPSCI Practice Tests
📖 CEPSCI Guides & Articles
What Practice Test Geeks adds beyond an AI chat for CEPSCI
An AI chatbot can quiz you, but it can't reproduce the exam conditions or keep your record. Here you get:
- A timed, full-length CEPSCI mock exam — 80 questions in 180 minutes with a 75% pass mark, modeled on the official exam's question count and time limit, followed by a score report broken down by exam domain.
- A fixed CEPSCI question bank: the same test every attempt, so your score is comparable from one try to the next instead of changing with every regenerated quiz.
- Progress saved on your device: completed tests, scores and missed questions stay in My Progress, so you can retake only what you got wrong.
- A printable CEPSCI cheat sheet you can print or save as a PDF.
- CEPSCI flashcards built from the same question bank.
- Free CEPSCI practice tests with the correct answer shown after each question.
How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy
Sources & references
Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy
- clemson.edu — Renewal, eligibility, exam format, passing score, retake policy, score validity, fees, registration deadline, retake fee, test delivery · verified Oct 2026