Laserfiche WebLink
Lee Higgins -2 - 19 August 2010 <br /> Chevron, 990 Beechnut-Tracy <br /> • Dust and odor control measures will be implemented during the excavation activities. <br /> • If field screening identifies additional impacted soil, the vertical and/or horizontal extent <br /> of the excavation will be extended and additional confirmation samples collected. <br /> • If the field screening does not identify additional impacted soil, the excavation will be <br /> backfilled immediately using clean soil located on the Site. Compaction will be to City <br /> of Tracy standards of at least 90%. <br /> • Upon approval, the proposed activities will be initiated immediately. <br /> • An excavation completion report and post-excavation risk assessment will be submitted <br /> by 31 December 2010. <br /> Central Valley Water Board staff concurs with the workplan provided the following exception is <br /> addressed: <br /> Prior to starting the excavation, an alternative source of clean soil should be identified in <br /> the event any additional excavation requires more clean backfill soil than the volume <br /> reportedly available on the Site. <br /> Please notify Central Valley Water Board staff at least 48-hours prior to the start of the <br /> excavation. <br /> By 31 December 2010, please submit the excavation completion summary report and the <br /> post-remediation risk assessment. <br /> If you have any questions or comments, please contact Dean Hubbard at (559) 445-5179. <br /> C. DEAN HUBBARD <br /> SHELTON R. GRAY <br /> Senior Engineering Geologist Engineering Geologist <br /> P.G. No. 6357 <br /> cc: Michael Infurna, San Joaquin County EHD, Stockton <br /> Gary Foote, AMEC, Oakland <br />