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Technical assistance and sampling resources
Helpful documents and resources for individuals, businesses, and facilities who discharge to the King County sewer system.
Technical assistance
Laboratory Waste Management Guide (December 2015) (1.1MB) prepared by the Local Hazardous Waste Management Program in King County, Washington.
The National Institute for Occupational Safety and Health (NIOSH) Pocket Guide to Chemical Hazards (NPG) is a source of general industrial hygiene information on several hundred chemicals/classes for workers, employers, and occupational health professionals. The NPG does not contain an analysis of all pertinent data, rather it presents key information and data in abbreviated or tabular form for chemicals or substance groupings (e.g. cyanides, fluorides, manganese compounds) that are found in the work environment. The information found in the NPG should help users recognize and control occupational chemical hazards.
King County’s Stormwater Pollution Prevention Manual provides best management practices (BMP's) for managing stormwater on commercial, multi-family and residential properties. The manual provides detailed information for businesses, residents, managers, and owners of property in unincorporated King County, and describes the actions we are all required to take to reduce the contamination of stormwater, surface water, and groundwater, to comply with Federal Clean Water Act requirements.
Sampling resources
Split Sampling – Fact Sheet This resource provides guidance on how to properly use the King County chain of custody form and handle split samples.
Cyanide Sampling Fact Sheet (320KB) This 2020 resource provides guidance on how to properly collect cyanide samples.
KCIW Sampling Procedures for Customers: Free-Floating Polar Fats, Oils, and Grease (FF-FOG) (281KB) This standard operating procedure applies to the field measurement of free-floating polar fats, oils, and grease (FF-FOG) by industrial dischargers.
KCIW technical memorandum on flow-proportioned sampling for permitted facilities (41KB) - A 2010 KCIW technical memorandum provides guidance on implementing flow-proportioned sampling. As King County industrial wastewater discharge permits come up for renewal or when the program issues new permits, it requires implementation of flow-proportioned sampling, or a demonstration that the facility's current sampling protocol is adequate. This applies only to facilities with permits, not those with discharge authorizations.
4-20 mA Sampler Input Interface (568KB) - Installation and Operation Instructions (Teledyne ISCO). Last modified January 18, 2007.