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, TABLE 1A <br /> _., HYDROPUNCH—GROUND-WATER SAMPLE ANALYSES <br /> VrUage West Marina,Stockton-San Joaquin County <br /> Results expressed inµgle <br /> 1.A Metli6d <br /> 5030/8015 J11 1PA rvIethod 60 33101801'8 itt <br /> > iisrl: is: <br /> . <br /> ydropuneft ' llate dotal <br /> Sample Saii]pled TP11 g B..nzene 1 o[uene ......... �nzene 3�ylenes rliPA d <br /> HP-1 04/08/94 86 0.4 ND ND 0.6 ND <br /> -i HP-2 04/08/94 ND 0.3 0,5 ND 0.4 ND <br /> HP-3 04/08/94 360 160 2.5 0.3 4.4 ND <br /> .7 HP-7 07/03/95 ND ND ND ND ND NA <br /> HP-8 07/03/95 ND ND ND ND ND NA <br /> HP-9 07/03/95 196 124 1 0.3 5 NA <br /> RP-10 07/03/95 .ND ND ND ND ND NA <br /> Reporting <br /> =? Limits 50µgIf 0.3µg/k 500µgIf <br /> i <br /> -:i <br /> ND Not detected above the reporting limit of the laboratory test. <br /> NA Not analyzed for TRPH-d <br /> Travel blank was nondetectable for all analytes. <br /> y <br /> -7 Drilling, Sampling, Completion, and Development of Initial Monitoring Wells <br /> On June 6, 1994, soil borings 4, 5, and 6 were drilled and completed as ground-water <br /> ;j monitoring wells MW-4, MW-5, and MW-6. This sequence of well numbers was selected by <br /> the field geologist in order to avoid confusion regarding the previous Hydropunch'numbers HP- <br /> 1, HP-2, and HP-3. All monitoring wells were drilled, sampled, and completed in order to <br /> --� determine the horizontal and vertical extent of soil and ground-water contamination and to allow <br /> for calculation of the ground-water flow direction and gradient. The monitoring well locations <br /> are depicted on the Site Sketch, Figure 2. W.W. Irwin, Inc. of Merced served as the <br /> =' environmental consultant while Woodward Drilling Company of Rio Vista drilled and completed <br /> the wells to a total depths of 30 feet. <br /> Collected soil samples were placed in an ice chest chilled to 4°C and dispatched to Sherwood <br /> Labs, Inc. of Hilmar using appropriate chain-of-custody procedures. Each sample collected to <br /> a depth of 20 feet was analyzed for the presence of Total Petroleum Hydrocarbons as gasoline <br /> (TPH-g) by modified EPA Method 8015/5030, Total Recoverable Petroleum Hydrocarbons as <br /> diesel (TRPH-d), and the volatile aromatics benzene, toluene, ethylbenzene, and total xylenes <br /> "3s? <br /> W.W.imi,4 Inc. <br /> Projecl No.33016,06 <br /> 1 •-- October 1995 4 <br /> ,i <br />