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FEB-18-99 `I HU 09.53 AM P. 06 <br /> FEB. -1 V 99(THU) 15: J7 UNOCAL ,%weT NORTH RE TEL;510 94"7181 P. 005 <br /> DRAFT <br /> Several srmtutoty and regulatory provisions provide the State Water Resources <br /> Control 8oard(swRCa), Regicaw water Quality Control Boards(RWQCBS), and locai <br /> agencies with broad authariry to require mspnrsiPble paries to clean up a release from a <br /> petroleum US's'. (e.g.,Health&Saf Code, §25299.37; Wat. Code, § 13304, subd. (a)) <br /> The Counxy has been designated as an agency To psrticlpac in rhe local Ought progrsttz <br /> far the abuerttent af, tad oversight of the abatmew of unaut wriaw releases of <br /> hazardous substances from UST& (Health&Saf- Code, § 25297.1) The SWRCB has <br /> promullgsted fesulau ans spam ring corrmctive anion rcquz=,eats for petrola m,LTST <br /> cases. (Cal. Code of Reg*,tit 23, §§292(1`2729) The regulations define carrea ive <br /> action as"any activity ne msary to investigate and analyze the effem of an unauthorized <br /> Meals, propose a cost-effec6ve plan to adequately protect hum=health. sufmy and the <br /> anwronment and-to res=*or protea cunrut and pouvda l beneficial uses of water, and <br /> =plement aW.evaluate the effectiveness of the activity(ies)."(Cal. Code Regs_, tit.23, § <br /> 2720) Cr=irective action consists of ane or mare of the&Uvwing pleaser_ (1)PvrvniY <br /> site hnesfigation,(2) soff and water it vw6gstion,(3)corrective action plan <br /> implementation, tad(4)vai5catiou moiiitoriug (Cal. Code Rags, tit. 23, § 27Z2, subd. <br /> W) <br /> The prelnminaxy site asm smeat phase indudes in6at site investigation, initial <br /> abatmt wt moons,initial site dmracLaization, and aW interim remedW actim (Cat. Code <br /> kegs.. tit. 23, § 2723. subd_ (a)) Ctnvctive action is eomplete at the conclusion of the <br /> prey site ass&= at phase,unless condir=w==;&a soil and waw mavcsus ptiom- <br /> A soft and water hwestigation is required if auy of ttie following conditions oasts; (1) . <br /> There is evidence that surface water or Rround want has been or may be affected by the <br /> ummnho rized rela me; (2)Free product is found at the site where the unauthorized release <br /> occwTed or in the surraun&*arca, (3)There is evidence that cont rinated soils are or <br /> may be in contact with surface water or groundwater, or(4)The regulatory agency <br /> requests an investigation, based on the actual or potential effects of contaminated soil or <br /> groundwater on nay surface water or Sround water resources or based on the increased <br /> risk of fire or explosion_ (Cal. Code Rags., tit. 23, § 2724) <br /> 2 <br />