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i <br />• <br />0 <br />Second Quarter 2000 Site Update - Former Chevron 99-5775 (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 />others <br />Planned Activities for Third Quarter 2000 <br />GR will continue to operate the treatment system during the third quarter 2000 As discussed in GR's letter <br />dated July 6, 2000, Schedule fol Sampling the Interun Groundwater Extraction and Treatment .System and <br />Vapor Extractlo17 System (attached), the initial groundwater system sampling took place on July 6, 2000 <br />The gioundwater portion ofthe treatment system will be sampled 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 required in the <br />discharge permit <br />Initial sampling and inspection of the vapor system as specified in the SJVUAPCD Authority to Construct <br />#N-4343-1-0 was performed on 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 />Stephen J Carter, G <br />Senior Geologist <br />eg A Gurss <br />Sr Project Manager <br />Attachments <br />346408 07 <br />Figure 1 Vicinity Map <br />Figure 2 Site Plan <br />Figure 3 Groundwater System Process flow Diagram <br />Figure 4 Vapor System Process Flow Diagram <br />Manley's Disposal Confirmation Form <br />