Cracked Jug, Gravel Driveway, and a Well Downhill
A 2.5-gal jug of concentrated herbicide cracks in the bed of a pickup. About 1.5 gal soaks into a gravel driveway and a small patch of bare soil. The driveway is 100 ft uphill from a domestic well, and a light rain is starting. The label requires PPE for mixing/loading and says 'do not contaminate water.' The spill kit in the truck contains absorbent pads, a shovel, nitrile gloves, and a plastic drum, but no eye protection. The driver has a cell phone and the label/SDS.
1. What are the immediate priorities, and how should the driver protect the well and surface water?
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First protect people: put on the chemical-resistant gloves and avoid breathing vapor or dust; if eye protection is missing, keep the face away from the spill and use the truck's clean water for flushing if needed. Stop the source by righting or sealing the jug, then keep the product from moving downhill. Do not hose the area down - that would spread contamination toward the well. Build a dike or berm with soil or absorbent pads on the downhill side, cover the spill if rain will spread it, and keep runoff away from the wellhead and any drainage path. Call for help early rather than waiting until the product reaches water.
2. How should the spilled material be contained, cleaned up, and packaged?
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Use absorbent pads or dry soil to soak up the liquid, working from the outside of the spill inward. Scoop up the saturated absorbent and contaminated soil with the shovel and place it in the plastic drum. Do not use sawdust or other fine organic material that can blow away unless the kit specifies it. Avoid walking through the spill and spreading it on tires or boots. After the bulk is picked up, the area may need additional absorbent or soil removal; do not rinse the residue into the ground. Label the drum as pesticide waste and keep it closed, upright, and out of the rain until disposal can be arranged according to label directions and state requirements.
3. What reporting, disposal, and follow-up actions are appropriate?
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Because the spill is near a domestic well and rain is starting, report it promptly to the Wyoming Department of Agriculture pesticide program and, if there is a threat to water or a reportable quantity, to the appropriate emergency or environmental authority. Have the label and SDS ready, and report the product, amount, location, and actions taken. Dispose of contaminated absorbent, soil, and containers through a pesticide waste program or according to state guidance; do not put them in ordinary trash or pour them down a drain. Document the incident, replace missing PPE in the spill kit, and inspect the truck bed for residual contamination before the vehicle is used for other loads.