TagWAC(40)

WAC Chapter 173-201A establishes water quality standards for surface waters of the State of Washington under RCW 90.48, including definitions for AKART, background conditions, best management practices (BMP), fecal coliform, mixing zones, pH, turbidity, wetlands, nonpoint source pollution, and trophic state. Covers general water use and criteria classes (Class AA extraordinary), dissolved oxygen standards, fecal

Washington State Department of Ecology publication #94-145 (updated 1/96) presenting the February 1996 annual update to the MTCA (Model Toxics Control Act) Cleanup Standards under CLARC II. Covers Method B and Method C cleanup levels for soil and groundwater, reference doses (RfD), cancer potency factors, hazard quotients, WAC 173-340-740 and WAC 173-340-745 calculations, inhalation correction

These three pages from the Washington State Department of Ecology document the delegation of signature authority to staff member Tom Luster, allowing him to issue routine Section 401 water quality certifications, Coastal Zone Management consistency determinations, and related administrative orders. Originally signed by Director Mary Riveland in December 1995, the authority was reaffirmed by Director Tom Fitzsimmons in February 1997. The delegation includes a succession of authority chain to ensure continuity if Luster is absent or leaves his position.

Implementation Memo No. 3 dated November 24, 1993, from Steve Robb of the Washington State Department of Ecology Toxics Cleanup Program to Interested Staff, addressing two issues regarding practical quantitation limits (PQLs) as cleanup standards under the Model Toxics Control Act (MTCA). Covers long-term liability for potentially liable persons (PLPs) who clean up to PQL

Washington State Department of Ecology Implementation Memo No. 3, authored by Steve Robb of the Toxics Cleanup Program, dated November 24, 1993. Addresses two issues under the Model Toxics Control Act (MTCA): (1) long-term liability for potentially liable persons (PLPs) when cleanup levels are set at practical quantitation limits (PQLs) rather than risk-based levels, including

Washington Administrative Code (WAC) Chapter 173-201A, Water Quality Standards for Surface Waters of the State of Washington, issued by the Washington State Department of Ecology under RCW 90.48. Covers introduction (WAC 173-201A-010) and definitions (WAC 173-201A-020) including AKART, background conditions, best management practices, carcinogen, chronic/acute conditions, critical condition (7Q10 flow), ecoregions, fecal coliform, hardness, mixing

WAC 246-366-110 sets sound control standards for Washington State school classrooms, requiring that background noise in new construction not exceed NC-35 on the noise criterion curve, with actual noise levels capped at 45 dBA during normal operation. Industrial and vocational classrooms have separate limits, with ambient noise not to exceed 65 dBA when exhaust systems are running. In music and vocational education areas, student noise exposure is strictly regulated by duration, and hearing protection must be provided if exposure limits are exceeded.

Washington State law (WAC 173-60-040) sets maximum allowable noise levels based on the zoning class of both the noise source and the receiving property, ranging from 55 to 70 dBA, with nighttime limits reduced by 10 dBA for residential areas between 10 p.m. and 7 a.m. Short-duration noise spikes are permitted, allowing up to 15 dBA above the limit for no more than 1.5 minutes per hour. Enforcement is complaint-driven, measured at the receiving property, and each 24-hour period of violation counts as a separate offense under RCW 70.107.050.