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APPENDIX I <br /> ' REGULATORY SUMMARY <br /> ' California's cleanup rate for leaking underground storage tanks(LUSTS)was less than 24 percent, <br /> which was far below the national average of 38 percent in 1993 (Environmental Protection Agency <br /> [EPA] 1996) This information prompted the State to re-examine its approach to cleaning up LUST <br /> ' sites <br /> ' The California State Water Resources Control Board (SWRCB) contracted with Lawrence Livermore <br /> National Laboratory(LLNL)to conduct a study on the fate and transport characteristics of petroleum <br /> leaks in California using historical data from a large number of sates funded In part by a United States <br /> ' Environmental Protection Agency (USEPA) grant This study was undertaken to provide scientific <br /> information to support decisions regarding LUST cleanup policies An effort was made to select sites <br /> ' from the areas in California where the majority of underground fuel tanks and petroleum releases are <br /> located <br /> ' The LLNL conducted an 18-month review of the regulatory framework and cleanup process currently <br /> applied to California's LUST sites LLNL issued the report in October 1995 with the following <br /> recommendations <br /> 1 Utilize passive bioremediation as a remediation alternative whenever possible <br /> ' 2 Immediately modify the American Society for Testing and Materials (ASTM) Risk-Based <br /> Corrective Action (RBCA) framework based on California's historical LUST case data <br /> 1 3 Apply a modified ASTM RBCA framework as soon as possible to LUST cases where fuel <br /> hydrocarbons (petroleum) have affected soil but do not threaten groundwater <br /> t4 Modify the LUST regulatory framework to allow the consideration of nsk-based cleanup <br /> goals higher than MCLs <br /> ' 5 identify a series of LUST demonstration sites and form a pilot LUST closure committee <br /> ' Shortly after the SWRCB decided to undertake the LLNL study, Senate Bill (SB) 1764 was adopted <br /> by the State Legislature directing the SWRCB to evaluate California's LUST Program In addition to <br /> placing several mandates on the SWRCB related to the LUST Program, SS 1764 established a <br /> ' Technical Advisory Committee composed of professionals with expertises in chemistry, biology, <br /> geology, engineering, health, and other fields The Committee was tasked with conducting a <br /> ' comprehensive review in the following areas of California's LUST Program <br /> ■ groundwater monitoring requirements <br /> ' ■ remediation techniques and methodologies <br /> FLUOR DANIEL 671 <br />