Use qualified firms when cleaning dumpster areas, loading docks and other paved surfaces or do not use degreasers, bleach or disinfectants in an area where rinse water could flow to a street, gutter, storm drain or creek. Even products labeled “biodegradable” or if “environmentally safe” cannot be used.
If flows could enter a storm drain, block flow with sand bags, rags, absorbents or a pile of dirt.
Dry sweep next and dispose of debris as solid waste.
If wet cleaning (including high temperature or high pressure washing) is required, the following three-step process is used:
Clean up as much as possible with rags.
Use absorbents (cat litter, sand, etc.) to collect residue. Sweep and dispose of materials to the trash if hazardous materials are not involved.
Mop, wet-vac (or, if absolutely necessary, wash) and collect water. Dispose of water in sink or sewer drain, not the storm drain.
If a final rinse is necessary for health reasons, then collect rinse water and dispose of to the janitorial sink or indoor floor drain. If outdoors, block storm drain before applying water, collect water and dispose of to the janitorial sink or indoor floor drain.