ARCHIVED REPORTS XR0000793 - Laserfiche WebLink

Home Browse Search

i 6ETTLER - RYAN NC. March 30, 1999 G-R Job #180183 Mr Edward C Ralston Tosco Marketing Company C(OPY 1380 Lead Hill Road, Suite 120 Roseville, California 95661 RE First Quarter 1999 Groundwater Monitoring & Sampling Report Tosca (Circle K) Unit #11205 16470 Cambridge Street Lathrop, California Dear Mr Ralston This report documents the quarterly groundwater monitoring and sampling event performed by Gettler-Ryan Inc (G-R) On January 25, 1999, field personnel monitored and sampled four wells (MW-1 through MW-4) 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 G-R 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 A Concentration Map is included as Figure 2 The chain of custody document and laboratory analytical reports are also attached Sincerely, f ED (G3 0, e L Harding Project Coordinator / I 'k No. 5577 Stephen J Cart r Senior Geologist, R G No 5577 CP OF CALF 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 iaas q .t Chain of Custody Document and Laboratory Analytical Reports 6747 Sierra Court , Suite J • Dublin , California 94568 ( 925 ) 551 - 7555