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As indicated above, the results of the active soil gas survey will be used in a risk <br />evaluation. Results of the risk evaluation will be reviewed by the California Department <br />of Toxic Substances Control (DTSC), Site Mitigation Program located in Sacramento, <br />California. Therefore, the data collected during this survey must meet DTSC <br />requirements. <br />Project Schedule: <br />The soil gas survey is scheduled for February 2007. The specific days for field data <br />collection are flexible. <br />References: <br />DTSC, 2003. Advisory - Active Soil Gas Investigations. 28 January. <br />DTSC, 2005. Interim Final - Guidance for the Evaluation and Mitigation of Subsurface <br />Vapor Intrusion to Indoor Air. Revised 7 February. <br />Pe-r +e-t 1-vo A Lb A U $,4tArvN L.t) t 60,(e. Srk e-e hale/1 et 6-SE- <br />1-4 re\9--,-Ne--j- '5, t I n .a., s (A) t 4-4 e_ c_zry.s -47-1A <br />t clAAfj1 <br />e rb AA-49.--w•Lit A 1," <br />tfP(to„ e-- -c-bo 4- Sr- Sc.-r-,A Ala-vt-4"-lot <br />LAAtk `,06,--A <br />-1/e4 <br />t/Jt1 Uv-01- <br />ActiveSoilGas_ProjectBI_Area24UPRR