SITE INFORMATION AND CORRESPONDENCE

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CLEANUP AND ABATEMENT ODER NO. R5-2007-XXX `"� 12 April 2007 DOLLY MADISON/LANG ENDORF BAKERY 1426 S. LINCOLN ST., STOCKTON SAN JOAQUIN COUNTY -6- contaminated sites. This Policy is based on Water Code Sections 13000 and 13304, the Title 27 California Code of Regulations (CCR), Division 2, Subdivision 1, and Title 23 CCR, Division 7, Chapter 15 regulations, and State Water Board Resolutions Nos. 68-16 and 92-49. The Policy includes site investigation, source removal or containment, information required to be submitted for consideration in establishing cleanup levels, and the bases for establishment of soil and groundwater cleanup levels. 23.The State Board adopted the Water Quality Enforcement Policy, which states in part: "At a minimum, cleanup levels must be sufficiently stringent to fully support beneficial uses, D unless the RWQCB allows a containment zone. In the interim, and if restoration of background water quality cannot be achieved, the CAO should require the discharger(s) to abate the effects of the discharge. Abatement activities may include the provision of alternate water supplies." (Enforcement Policy, p. 19.) A 24.The Water Board's Water Quality Control Plan for the Sacramento River and San Joaqui River Basins, 4 t Edition (hereafter Basin Plan) designates beneficial uses of the waters F of the State, establishes water quality objectives (WQOs) to protect these uses, and establishes implementation policies to implement WQOs. The beneficial uses of the T groundwater beneath the site are domestic, municipal, industrial, and agricultural supply. 25.The wastes detected at the site are not naturally occurring, and some are known human carcinogens (Benzene, TBA, Lead and 1,2-DCA) or suspected carcinogens (MtBE). Pollution of groundwater with these wastes impairs or threatens to impair the beneficial uses of the groundwater. 26.WQOs listed in the Basin Plan include numeric WQOs, e.g., state drinking water maximum contaminant levels (MCLs), and narrative WQOs, including the narrative toxicity objective and the narrative tastes and odors objective for surface and groundwater. Chapter IV of the Basin Plan contains the Policy for Application of Water Quality Objectives, which provides that "[w]here compliance with narrative objectives is required (i.e., where the objectives are applicable to protect specified beneficial uses), the Water Board will, on a case-by-case basis, adopt numerical limitations in orders which will implement the narrative objectives." The numerical limits for the constituents of concern listed in the following table implement the Basin Plan WQOs.