In California, Central Contra Costa Sanitary District crews use a three-tined handheld gardening tool to separate pump clog debris into components like these.
Every Monday and Thursday Orange County Sanitation District crews remove nondispersibles from three pump stations, a preventive maintenance task that takes two employees up to two hours to complete. This is a 200-hp, 880-rpm Fairbanks Morse 5713 with three vanes and a 24.38-inch impeller.
Senior Mechanic Gilbert Padilla pulls out stubborn materials. Labor cost for one year for 971 such preventive or corrective de-ragging actions at 10 of 15 pump stations: $320,000.