RCW 90.48.585
Water quality data—When credible.
(1) In collecting and analyzing water quality data for any purpose identified in RCW 90.48.580(2), data is considered credible data if:
(a) Appropriate quality assurance and quality control procedures were followed and documented in collecting and analyzing water quality samples;
(b) The samples or measurements are representative of water quality conditions at the time the data was collected;
(c) The data consists of an adequate number of samples based on the objectives of the sampling, the nature of the water in question, and the parameters being analyzed; and
(d) Sampling and laboratory analysis conform to methods and protocols generally acceptable in the scientific community as appropriate for use in assessing the condition of the water.
(2) Data interpretation, statistical, and modeling methods shall be those methods generally acceptable in the scientific community as appropriate for use in assessing the condition of the water.
(3) The department shall develop policy:
(a) Explaining how it uses scientific research and literature for developing and reviewing any water quality standard or technical model used to establish a total maximum daily load for any water of the state;
(b) Describing the specific criteria that determine data credibility; and
(c) Recommending the appropriate training and experience for collection of credible data.
[ 2004 c 228 § 4.]
Structure Revised Code of Washington
Title 90 - Water Rights—Environment
Chapter 90.48 - Water Pollution Control.
90.48.010 - Policy enunciated.
90.48.030 - Jurisdiction of department.
90.48.035 - Rule-making authority.
90.48.037 - Authority of department to bring enforcement actions.
90.48.039 - Hazardous substance remedial actions—Procedural requirements not applicable.
90.48.045 - Environmental excellence program agreements—Effect on chapter.
90.48.080 - Discharge of polluting matter in waters prohibited.
90.48.090 - Right of entry—Special inspection requirements for metals mining and milling operations.
90.48.100 - Request for assistance.
90.48.112 - Plan evaluation—Consideration of reclaimed water.
90.48.144 - Violations—Civil penalty—Procedure.
90.48.150 - Construction of chapter.
90.48.153 - Cooperation with federal government—Federal funds.
90.48.156 - Cooperation with other states and provinces—Interstate and state-provincial projects.
90.48.158 - Grants to public bodies authorized.
90.48.160 - Waste disposal permit—Required—Exemptions.
90.48.162 - Waste disposal permits required of counties, municipalities and public corporations.
90.48.215 - Upland finfish facilities—Waste discharge standards—Waste disposal permit.
90.48.230 - Application of administrative procedure law to rule making and adjudicative proceedings.
90.48.240 - Water pollution orders for conditions requiring immediate action—Appeal.
90.48.250 - Agreements or contracts to monitor waters and effluent discharge.
90.48.261 - Exercise of powers under RCW 90.48.260—Aquatic resource mitigation.
90.48.262 - Implementation of RCW 90.48.260—Permits for energy facilities—Rules and procedures.
90.48.270 - Sewage drainage basins—Authority of department to delineate and establish.
90.48.280 - Sewage drainage basins—Comprehensive plans for sewage drainage basins.
90.48.310 - Application of barley straw to waters of the state.
90.48.364 - Discharge of oil into waters of the state—Definitions.
90.48.366 - Discharge of oil into waters of the state—Compensation schedule.
90.48.367 - Discharge of oil into waters of the state—Assessment of compensation.
90.48.368 - Discharge of oil into waters of the state—Preassessment screening.
90.48.386 - Department of natural resources leases.
90.48.390 - Coastal protection fund—Established—Moneys credited to—Use.
90.48.400 - Coastal protection fund—Disbursal of moneys from.
90.48.422 - Water quality standards—Compliance methods—Department authority.
90.48.430 - Watershed restoration projects—Approval process—Waiver of public review.
90.48.445 - Aquatic noxious weed control—Water quality permits—Definition.
90.48.448 - Eurasian water milfoil—Pesticide 2,4-D application.
90.48.465 - Water discharge fees—Report to the legislature.
90.48.467 - Report to the legislature—Required information.
90.48.480 - Reduction of sewer overflows—Plans—Compliance schedule.
90.48.490 - Sewage treatment facilities—Plans to upgrade or construct.
90.48.495 - Water conservation measures to be considered in sewer plans.
90.48.530 - Construction projects involving fill material—Leaching test.
90.48.531 - Leaching tests—Identification—Report to the legislature.
90.48.540 - Use attainability analysis of water within federal reclamation project boundaries—Rules.
90.48.570 - Water quality data—Findings—Intent.
90.48.575 - Water quality data—Definitions.
90.48.580 - Water quality data—Credible data, information, literature.
90.48.585 - Water quality data—When credible.
90.48.590 - Water quality data—Falsified data—Penalty.
90.48.595 - On-site sewage disposal system repair and replacement—Loan and grant programs.
90.48.615 - Motorized or gravity siphon aquatic mining—Prohibited acts.