CESSWI case studies
CESSWI · Put your knowledge to work in context.
CESSWI™ - the Certified Erosion, Sediment and StormWater Inspector™ - is a professional certification administered by EnviroCert International, Inc. for people who inspect erosion, sediment and stormwater plans and their implementation in the field. The CESSWI case studies are 5 cases and about 3,741 words.
1The Flattened Silt Fence and the Fast Camera Clock
During a weekly inspection of a 14-acre residential subdivision, you find the silt fence behind lots 12–18 flattened where tracked equipment crossed it, with a 40-foot sediment track running down the curb to a storm inlet. You take 12 photos on your phone and 3 on the site camera.
746 words, about 4 min2The Plugged Riser at 7:10 a.m.
on a commercial site and 0.6 inch of rain fell overnight. The sediment basin riser is plugged with construction debris and muddy water is leaving the site over the emergency spillway into a roadside ditch that reaches a creek 900 feet downstream.
702 words, about 4 min3Alone, Ninety-Five Degrees, and Four Hazards
It's mid-August, 95°F, and you are doing the monthly inspection of a 30-acre clearing and grading job alone. Your radio battery is dead and cell coverage is one bar.
759 words, about 4 min4Two Straw Bales and a Fence That's Still Standing
A 6.2-acre disturbed commercial site drains through a 300-foot roadside ditch at about 4 percent grade into a 24-inch CMP that discharges to a creek. The perimeter silt fence sits 8 feet from the toe of a 3:1 fill slope and has been overtopped twice in the past month.
748 words, about 4 min5The Overflowing Washout and the As-Built Orifice
You're reviewing a site that is about 85 percent complete. The concrete washout is a lined pit, but it is full to within 6 inches of the top and the liner is torn at one corner.
786 words, about 4 min