CESSWI common mistakes
CESSWI · Understand the traps and how to avoid them.
Photographing a failing BMP or discharge point with a bare phone shot - no scale reference, no site identifier, no direction noted, and no cross-reference to the inspection form.
Phone cameras auto-stamp time and GPS, so the inspector assumes the image is self-documenting; in the field the priority feels like capturing the problem before it changes.
What to do instead
Put a scale/identifier board (date, site, BMP ID, inspector initials) in frame, take a wide orientation shot plus a close-up, state the compass direction or upstream/downstream reference in the note, and log the photo number against the matching line on the inspection report.
Writing inspection notes at the end of the day from memory in conclusory language - 'silt fence in poor condition', 'stockpile needs work' - with no dimensions, linear footage, location, or quantity.
Field time is compressed and note-taking feels like it can wait until the truck; conclusory phrasing feels faster than measurement.
What to do instead
Write contemporaneously on a structured form: BMP ID, station or GPS point, measured length/area/volume, observed condition against the specific standard, and the corrective action required. If you must reconstruct later, mark the entry as reconstructed and the time of actual observation.
Telling site personnel 'this is out of compliance' during a walk-through, accepting 'we'll get to it tomorrow', and leaving without written confirmation or a scheduled re-inspection.
Correcting in the moment feels sufficient and written follow-up feels adversarial or bureaucratic; the inspector wants to preserve the working relationship.
What to do instead
Close every verbal finding with the four-part statement - observation, standard/requirement, specific corrective action, deadline - then confirm it in the daily report or a corrective action log with the responsible party's name, and set and record a re-inspection date.
Letting repeated noncompliance slide with a contractor who is dismissive or hostile, documenting the same deficiency inspection after inspection without escalating it.
Conflict avoidance plus the belief that escalation is the regulator's job, not the inspector's; the inspector fears being seen as difficult or losing access to the site.
What to do instead
Follow the documented escalation ladder: written corrective action, then notice to the responsible party and owner, then notification of the permitting authority/plan approver within the stated timeframe. Record each step and date, and escalate on schedule rather than on mood.
Walking vegetated buffers, outfalls, and stockpile edges in short sleeves with bare hands, pulling or pushing aside unidentified plants, and finishing the day without a tick check.
Vegetation looks benign compared with the earthmoving equipment, so plant and insect hazards get no pre-task thought; PPE attention goes to high-visibility and hard-hat requirements only.
What to do instead
Include vegetation and insect hazards in the pre-task hazard review: identify poison ivy/oak/sumac and hogweed before contact, wear long sleeves and gloves, use repellent, stay on cleared access where possible, and do a full-body tick check at end of shift with prompt removal.
Opening, moving, or sampling an unlabeled drum or container found on site, or stepping into an unprotected excavation or pit to inspect a BMP.
Curiosity plus a sense that the inspector should be able to evaluate anything on site; the container looks abandoned and the excavation looks shallow.
What to do instead
Treat any unknown container as hazardous: do not open, tip, or smell it - stop work in the area, barricade, notify the site operator, and route to HazMat response. For excavations and pits, do not enter; assess from the rim against the excavation/confined-space rules and record the condition photographically.
Responding to every sediment problem by adding perimeter silt fence, rather than first stabilizing the exposed area that is producing the sediment.
Silt fence is the most familiar, most visible, and easiest BMP to specify; it produces an instant photo of 'action taken' even when the source is untouched.
What to do instead
Apply the erosion-control-first hierarchy: cover/stabilize or reduce the disturbed area and manage runoff at the source, then use sediment control only for material that cannot be prevented from mobilizing. State the source-control measure first in the corrective action.
Installing silt fence as a continuous straight-line perimeter barrier - down the slope rather than along the contour, over long uninterrupted runs, and across concentrated flow paths or ditch bottoms.
Perimeter 'fencing' matches the visual image of containment, and straight runs are faster and easier to string out than contour-following segments.
What to do instead
Layout on the contour with the ends turned upslope, keep run lengths within the specified maximum, use J-hooks or redundant rows where needed, and never place silt fence across a concentrated flow path - use ditch checks, check dams, or outlet protection there instead.
Leaving stockpiles uncovered, siting concrete washout or fueling/equipment refueling in or near a drainage path, and not flagging these as BMP deficiencies on the report.
Materials management is treated as a housekeeping concern rather than a stormwater control, so it does not appear on the inspector's mental checklist.
What to do instead
Walk the materials-management items explicitly each inspection: stockpile cover and perimeter controls, designated lined washout away from drainage, secondary containment and siting for fuels and chemicals, and waste receptacle condition. Record each as a line item with a pass/fail and photograph it.
Treating the SWPPP as a document filed at the start of the job - not updating it when BMPs, sequencing, or drainage patterns change in the field, and not re-verifying inspection frequency and post-storm triggers against the current plan.
The plan is associated with permit application rather than daily operations, and field changes feel like construction decisions separate from the plan.
What to do instead
Keep a running log of plan changes and redline the drawings as BMPs are added, moved, or removed; verify the current inspection frequency and the rain-event trigger against the plan after each qualifying event, and record the updated plan version and date on every inspection report.