December 1998 Criteria for Sewage Works Design otal suspended solids UBC Uniform Building Code UFC Uniform Fire Code Underwriters laboratories USDA US Department of Agriculture USGs US Geological Survey VOC olatile organic compound WAC Washington Administrative Code WDFW Washington State Department of Fisheries and wildlife WEF Water Environment Federation( formerly Wisha Washington Industrial Safety and health Act WPCF Water Pollution Control Federation(now WEF WsDOT Washington State Department of WWTP wastewater treatment plantxii December 1998 Criteria for Sewage Works Design TSS total suspended solids UBC Uniform Building Code UFC Uniform Fire Code UL Underwriters Laboratories USDA US Department of Agriculture USGS US Geological Survey VOC volatile organic compound WAC Washington Administrative Code WDFW Washington State Department of Fisheries and Wildlife WEF Water Environment Federation (formerly WPCF) WISHA Washington Industrial Safety and Health Act WPCF Water Pollution Control Federation (now WEF) WSDOT Washington State Department of Transportation WWTP wastewater treatment plant