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Summary of Applicable or Relevant and <br /> Appropriate Requirements (ARARs) <br /> for OU-1 at <br /> Defense Distribution Region West (DDRW) , Tracy <br /> Title Description Comment <br /> CCR, Title 23, Division 3, Regulations pertain to waste discharg- ARAR; applicable <br /> Chapter 15, Section 2500 et es to land which may threaten water <br /> seq. (Discharges of Waste to quality. These regulations contain Applies to any wastes which <br /> Land) design and construction standards for could threaten water quality, <br /> waste management units to minimize if left in place or treated and <br /> threats to water of the state. Wastes subsequently disposed of to <br /> are classified as hazardous, designat- land at the site. <br /> ed, non-hazardous solid or inert based <br /> on their intrinsic threat to water <br /> quality. Wastes must be discharged <br /> for treatment, storage or disposal to <br /> waste management units (WMUs) <br /> classified based on the ability to <br /> contain types of waste being <br /> discharged. Also specifies <br /> monitoring, closure, corrective action <br /> and re orting requirements for WMUs. <br /> Chapter 15, Article 5 Establishes water quality protection ARAR; relevant and appropriate <br /> standards including concentration <br /> limits for constituents of concern at <br /> background levels. Cleanup levels <br /> greater than background may only be <br /> approved if background is to be <br /> achievable. Cleanup levels above <br /> background must meet all applicable <br /> water quality standards, must be the <br /> lowest levels technologically and <br /> economically achievable, must consider <br /> exposure via other media and must <br /> consider combined toxicologic effects <br /> of pollutants. <br /> February 28, 1992 -6- <br />