Laserfiche WebLink
I c. <br /> 411 GETTLER - RYAN N <br /> March 29, 2002 <br /> G-R Job#280054 <br /> Mr Nick Nickerson <br /> Union Oil Company of California <br /> 8788 Elk Grove Boulevard <br /> Building 3, Suite 15 <br /> Elk Grove, California 95624 <br /> RE First Quarter Event of February 15 and 16, 2002 <br /> Groundwater Monitoring & Sampling Report <br /> Former Unocal Service Station#2859 <br /> 1665 Pacific Avenue <br /> Stockton, California <br /> Dear Mr Nickerson <br /> This report documents the most recent quarterly groundwater monrtonng and sampling event performed by Gettler- <br /> Ryan Inc (G-R) All field work was conducted in accordance with G-R.Standard Operating Procedure-Groundwater <br /> Sampling (attached) <br /> Static groundwater levels were measured and all wells were checked for the presence of separate-phase hydrocarbons <br /> Separate-phase hydrocarbons were not present in the wells Static water level data and groundwater elevations are <br /> summanzed in Table 1 Dissolved Oxygen Concentrations are summarized in Table 6 Potentiometnc Maps are <br /> included as Figures 1 and 2 <br /> Groundwater samples were collected from the monitoring wells as specified by G-R Standard Operating Procedure- <br /> Groundwater Sampling (attached) The field data sheets are also attached The samples were analyzed by Sequoia <br /> Analytical Analytical results are summarized in Tables 1 through 5 A Concentration Map is included as Figure 3 <br /> The chain of custody document and laboratory analytical reports are also attached <br /> Sincerely, <br /> t` <br /> ' C � <br /> a na L Harding ��lr r'EDl <br /> Project Coordinator ��OO�GL.AS 14 <br /> No. 6882 <br /> NDoukGeologist, RG <br /> Lee No 6882 C <br /> Figure 1 Potentiometnc Map(Zone A) <br /> Figure 2 Potentiometnc Map(Zone B) <br /> Figure 3 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 /> Table 4 Groundwater Analytical Results <br /> Table 5 Groundwater Analytical Results-General Minerals <br /> Table 6 Dissolved Oxygen Concentrations <br /> Attachments Standard Operating Procedure-Groundwater Sampling <br /> Field Data Sheets <br /> 2859 qml Chain of Custody Document and Laboratory Analytical Reports <br /> 6747 Sierra Court , Suite J • Dublin , California 94568 ( 925 ) 551 - 7555 <br />