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• <br />• <br />Second Quarter 2000 Site Update - Former Chevron 49-5775 (CAO #5-00-704) <br />July 14, 2000 <br />Comparison of mass removal rates to mass remaining also requires complete delineation of the plumes for <br />an accurate assessment of the initial mass Further assessment of the dissolved plume will be performed by <br />other s <br />Planned Activities for Third Quarter 2000 <br />GR will contuuic to opci ate the treatment system during the third quarter 2000 As discussed in GR's letter <br />dated July 6, 2000, Schedule foi Sampling the Interum Groundwater Extraction and Ti eamment System and <br />Vapor Crtraction .System (attached), the initial groundwater system sampling took place on July 6, 2000 <br />The groundwater portion of the treatment system will be sainpicd weekly on Wednesdays at 10 00 am unless <br />notified otherwise Data from samples collected during system startup and all subsequent sample events in <br />the third quarter 2000 will be compiled in the Third Quarter 2000 Sit e Update report All analytical data <br />will be submitted to the City of Lodi within 14 days of receipt of analytical report as requited in the <br />discharge permit <br />Initial sampling and inspection of the vapor system as specified in tine SJVUAPCD Authority to Construct <br />#N-4343-1-0 was performed oil July 10, 2000 Ms Lisa Middleton of SJVUAPCD was present to inspect <br />the system and witness sample collection The VES will be sampled once a month during the final <br />groundwater sampling conducted at 10 00 am on the last Wednesday of each month, unless notification is <br />given otherwise As required by the Authority to construct, analytical data from samples collected during <br />the initial inspection will be submitted to the SJVUAPCD by September 10, 2000 These data will also be <br />included in the Third Quarter 2000 Site Update report <br />Please call us at 916 631 1300 if you have questions <br />Sincerely, <br />Gettler-Ryan Inc. <br />C <br />Stephen PJC- a r t e rG <br />Senior Geologist <br />7egg Gurss <br />Sr Project Manager <br />Attachments Figure I Vicinity Map <br />Figure 2 Site Plan <br />9 <br />IN40J5M <br />tofCAI-XFo <br />Figure 3 Groundwater System Process flow Diagram <br />Figure 4 Vapor System Process Flow Diagram <br />Manley's Disposal Confirmation Form <br />346408 07 3 <br />