ARCHIVED REPORTS_XR0012429 - Laserfiche WebLink

Home Browse Search

6ETTLER - RYAN I September 21, 2000 G-R Job#180137 Mr Edward C Ralston Tosco Marketing Company 1380 Lead Hill Road, Suite 120 Roseville, California 95661 RE Third Quarter 2000 Groundwater Monitoring &Sampling Report Tosco (Unocal) Service Station#5886 2701 West March Lane Stockton, California Dear Mr Ralston This report documents the quarterly groundwater monitoring and sampling event performed by Getder-Ryan, Inc (G-R) On August 3 and 4, 2000,field personnel monitored and sampled twenty wells(MW-1, MW-2, MW-3, MW-413,MW-4S,MW-5D,MW-5S,MW-6D, MW-6S,MW-7D,MW-7S, MW-8S,MW-8I,MW-8D, MW-9S, MW-9I, MW-9D, MW-IOS,MW-101, and MW-IOD) at the above referenced site Static groundwater levels were measured and all wells were checked for the presence of separate-phase ® hydrocarbons Separate-phase hydrocarbons were not present in the wells Static water level data and groundwater elevations are summarized in Table 1 A Potentiometric Map is included as Figure 1 Groundwater samples were collected from the monitoring wells as specified by Standard Operating Procedure - Groundwater Sampling (attached) The field data sheets are also attached The samples were analyzed by Sequoia Analytical Analytical results are summarized in Tables 1 and 2, and a Concentration Map is included as Figure 2 The chain of custody document and laboratory analytical reports are also attached Sincerely, Sib o0 Deanna L Harding Project Coordinator m NNo. 6676 Barbara Sieminski 9 Or CAL�Fd Project Geologist,R G No 6676 Figure 1 Potentiometric Map Figure 2 Concentration Map Table 1 Groundwater Monitoring Data and Analytical Results Table 2 Groundwater Analytical Results-Oxygenate Compounds . Attachments Standard Operating Procedure-Groundwater Sampling Field Data Sheets SU6 qm] Chain of Custody Document and Laboratory Analytical Reports 6747 Sierra Court , Suite J Dublin , California 94568 ( 925 ) 551 - 7555