Residuals_Hauling_Background_and_Usage_Reports.xlsx

This is a residuals hauling background and usage report prepared for the Washington Suburban Sanitary Commission (WSSC) in Maryland, documenting operational data from the Patuxent and Potomac Water Filtration Plants. The document provides comprehensive historical and current usage metrics for residuals handling operations, including solids content percentages, daily hauling volumes, polymer consumption, and chemical treatment data spanning from 2005 through May 2026. For the Potomac facility, monthly average solids hauled ranged from approximately 53,873 to 213,925 pounds per day, with total 2024-2026 operations generating 9,863.98 dry tons of solids. For the Patuxent facility, 2025 operations resulted in 5,451.64 wet tons of sludge hauled to multiple disposal sites including Woodbine, Keymar, Emmitsburg, Keysville, Taneytown, Lothian, and Laurel, Maryland, with a total of 12,573 miles hauled across all destination sites.

The report demonstrates significant operational activity requiring ongoing residuals management services. Potomac facility operations during the analysis period show consistent monthly variations, with lowest average daily hauling in November 2025 at 63,961 pounds and highest in May 2025 at 213,925 pounds, while polymer usage averaged 403.53 pounds per day overall. Patuxent facility historical data from 2005 through 2025 indicates annual solids production ranging from 35.606 to 59.946 wet tons per year, with 2025 showing 35.606 wet tons. The contractor selected through the solicitation closing July 13, 2026, must provide comprehensive residuals hauling, transportation, storage, and disposal services, furnishing all necessary labor, equipment, vehicles, materials, permits, and transportation infrastructure to manage residuals generated from drinking water treatment processes at both facilities.