Laserfiche WebLink
6ETTLER - RYAN INC. <br /> p <br /> September 8, 2000 <br /> G-R.Job#180138 <br /> Mr Edward C Ralston <br /> Tosco Marketing Company <br /> 1380 Lead Hill Road,Suite 120 <br /> Roseville, California 95661 <br /> RE Second Quarter 2000 Groundwater Monitoring& Sampling Report <br /> Tosco (Unocal) Service Station #6981 <br /> 4707 Pacific Avenue <br /> 'Stockton, California <br /> Dear Mr Ralston <br /> This report documents the quarterly groundwater monitoring and sampling event performed by Gettler-Ryan <br /> Inc (G-R) On June 26 and 27, 2000, field personnel monitored and sampled eighteen wells (MW-1,MW-2, <br /> MW-4 through MW-9, MW-11, MW-14,MW-15, MW-16,VW-1 through VW-4, VW-7, and PTW-1) at the <br /> above referenced site <br /> Static groundwater levels were measured and all wells were checked for the presence of separate-phase <br /> hydrocarbons Separate-phase hydrocarbons were not present in the wells Static water level data and <br /> • groundwater elevations are summarized in Table 1 A Potentiometric Map is included as Figure 1 <br /> Groundwater samples were collected from the monitoring wells as specified by G-R Standard Operating <br /> Procedure - Groundwater Sampling (attached) The field data sheets are also attached The samples were <br /> analyzed by Sequoia Analytical Analytical results are summarized in Tables 1, 2 and 3 A Concentration Map <br /> is included as Figure 2 The chain of custody document and laboratory analytical reports are also attached <br /> Sincerely, <br /> eanna L Harding \� Rf�D GE O <br /> C� �GK'S J G'i <br /> Project Coordinator <br /> No 6882 <br /> Doug s Lee <br /> Senior Geologist, R G No 6882 �gTFOF CFa��� <br /> Figure 1 Potentiometnc Map <br /> Figure 2 Concentration Map <br /> Table 1 Groundwater Monitoring Data and Analytical Results <br /> Table 2 Groundwater Analytical Results-Oxygenate Compounds <br /> Table 3 Groundwater Analytical Results <br /> Attachments Standard Operating Procedure-Groundwater Sampling <br /> Field Data Sheets <br /> 6981.gm1 Chain of Custody Document and Laboratory Analytical Reports <br /> 6747 Sierra Court , Suite J • Dublin , California 94568 ( 925 ) 551 -7555 <br />