Washington Administrative Code
Title 173 - Ecology, Department of (See also Titles 197, 317, 372, and 508)
Chapter 173-200 - Water quality standards for groundwaters of the state of Washington
Section 173-200-070 - Early warning value
Current through Register Vol. 24-06, March 15, 2024
(1) The purpose of an early warning value is to provide early detection of increasing contaminant concentrations that may approach or exceed enforcement limits.
(2) Whenever an enforcement limit is established above background groundwater quality, an early warning value may be established, as appropriate.
(3) An early warning value shall be required when an alternative point of compliance is established unless technical constraints would prohibit establishment of an early warning value.
(4) An early warning value shall be established as a percentage of the enforcement limit upon consideration by the department of factors including, but not limited to, the following:
(5) It shall not be considered a violation of these rules when contaminants are detected in concentrations exceeding an early warning value, but not exceeding an enforcement limit, unless there is failure to notify the department or respond as required in accordance with subsection (6) of this section.
(6) The following procedures apply when a contaminant is detected at a point of compliance or an alternative point of compliance and an early warning value is attained or exceeded.
Statutory Authority: RCW 90.48.035. 90-22-023, § 173-200-070, filed 10/31/90, effective 12/1/90.