SITE INFORMATION AND CORRESPONDENCE_1988-1991

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ARARs and T 3CS for Supe.Sites 5- • 17 May 1991 this act. DHS has promulgated, in Title 22 of CCR§§12000 et seq., lists of chemicals subject to the discharge prohibition and regulatory levels defining a "significant amount" for many of these chemicals. The discharge prohibition and regulatory levels would be chemical-specific, action-specific, and location-specific ARARs. The State Water Resources Control Board has adopted a policy defining "sources of drinking water" with respect to Proposition 65 and other State and Regional Board requirements (Resolution No. 88-63). This policy has been incorporated into the Regional Boards' Basin Plans. The resolution states that, with few specific exceptions, all surface and ground waters of the state are to be considered existing or potential sources of drinking water. This policy is either an ARAB or a TBC, which could be both chemical- specific and location-specific with respect to cleanup activities. CALIFORNIA CODE OF REGULATIONS, TITLE 23, WATERS, DIVISION 3, CHAPTERS 15 AND 16 (Formerly Chapter 3, Subchapters 15 and 16) Division 3 of Title 23 CCR contains regulations adopted by the State Board for the purpose of implementing certain provisions of the California Water Code. Chapter 15 of Division 3 contains regulations governing discharges of waste to land where water quality could be adversely impacted. The regulations in Chapter 16 are intended to protect waters of the state from discharges of hazardous substances from underground storage tanks. The following is a brief description of Chapters 15 and 16. Chapter 15, Discharges of Waste to Land In 1984, regulations contained in Chapter 15 were substantially changed to increase their degree of protection for water quality. These regulations govern the treatment,storage, and disposal of waste to land and establish siting, containment, monitoring, and closure standards. Activities included in this program are the issuance of WDRs by the Regional Boards for the discharge of 'hazardous', 'designated' and 'nonhazardous solid' wastes to land and the oversight of corrective actions at leaking waste management units. Cleanup activities involving the discharge of waste to land or the closure of leaking waste management units at a CERCLA site would be subject to the substantive requirements of Chapter 15. These regulations contain both action-specific and location-specific ARARs. Chapter 16, Underground Tank Regulations Regulations contained in Chapter 16 allow for local enforcement agencies to be the lead in permitting and enforcement of leaking underground storage tanks. Under these regulations, the Regional Boards provide oversight of cleanup activities associated with leaking underground tanks. Corrective actions taken with respect to leaking