Laserfiche WebLink
Ak <br /> 9 <br /> 6ETTLER - RYAN INC. <br /> NCr <br /> • June 12, 2000 <br /> G-R Job #180238 <br /> Mr. Ed 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 /> Former Tosco (Unocal) Service Station#4409 <br /> 1502 N. El Dorado Street <br /> Stockton, California <br /> Dear Mr. Ralston: <br /> This report documents the quarterly groundwater monitoring and sampling event performed by Gettler-Ryan Inc. <br /> (G-R). On April 10,2000,field personnel monitored and sampled four wells(MW 1 through MW-4)at the above <br /> referenced site. <br /> Static groundwater levels were measured and all wells at the referenced site were checked for the presence of <br /> separate-phase hydrocarbons. Separate-phase hydrocarbons were not present in any of the wells. Static water level <br /> data and 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 Procedure <br /> • <br /> Analytical- <br /> Sampling(attached). The field data sheets are also attached. The samples were analyzed by Sequoia <br /> Analytical. Analytical results are summarized in Tables 1 and 2. A Concentration Map is included as Figure 2. <br /> The chain of custody document and laboratory analytical reports are also attached. <br /> Te <br /> ' erely, �1 <br /> �akd�, EC <br /> a L. Harding �C? �'S�F�j���� <br /> Project Coordinator Q <br /> t9- <br /> �4j2t't'� <br /> t r <br /> No. 6676 <br /> Barbara Sieminski <br /> Project Geologist, R.G. No. 6676 Q� <br /> orc . <br /> Figure 1: Potentiometric Map <br /> Figure 2: Concentration Map <br /> Table 1: Groundwater Monitoring Data and Analytical Results <br /> Table 2: Groundwater Analytical Results-Oxygenate Compounds <br /> Attachments: Standard Operating Procedure-Groundwater Sampling <br /> Field Data Sheets <br /> 440.gW Chain of Custody Document and Laboratory Analytical Reports <br /> r <br /> 6747 Sierra Court , Suite J • Dublin , California 94568 ( 925) 551 - 7555 <br />