ARCHIVED REPORTS_XR0002666 - Laserfiche WebLink

Home Browse Search

3.0 WATER QUALITY GOALS AND PROTECTION STANDARDS Site-specific numeric water quality goals are necessary to formulate final remedial objectives for the site The goals take two forms consistent with guidance found within State Water Resources Control Board (SWRCB) Resolution 92-49 and Section 2550 4 of Chapter 15 of the California Code of Regulations (CCR) The site water quality goal constitutes the overall goal for water quality restoration This goal is consistent with achieving background groundwater concentrations While policy promotes achieving background concentrations as a goal, Maximum Concentration Limits (MCLs) are established as minimum standards to protect the beneficial uses of ground water MCLs different than background may be considered when a site is utilizing corrective action For the purpose of this section, petroleum hydrocarbon impact is restricted to groundwater, and the nearest surface water (Yosemite Lake) is located at a significant distance from the site, only groundwater is considered here The existing and potential beneficial uses of groundwater underlying the site include • municipal and domestic water supply, • agricultural supply, and • industrial process and service supply Additional guidance for developing water quality goals and MCLs were obtained from the Water Quality Control Plan, Central Valley Region, Sacramento and San Joaquin River Basins (Regional Water Quality Control Board - Central Valley Region [RWQCB], Decem- ber 9, 1994), A Compilation of Water Quality Goals (Marshack, 1993), and State Board Resolutions 68-16, 88-63, and 9249 (as amended on April 21, 1994) The development of numeric limitations associated with the goal of achieving background concentrations and associated with the protection of the beneficial use are covered within the balance of this section 3201337B/CAP-AMD AMID DOC 9 November 3 _ ber03 , 1995