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' F <br /> 1 <br /> l M 1 <br /> OS May 1997 <br /> AGE-NC ProyectNa 95-0139 <br /> 1 <br /> page 5 of 9 ^ ` I ravel 2 <br /> + r SENiCO Pea g <br /> tion and a concrete slab was theny ;r <br /> he <br /> gallon USTs were installed� ava�cavation bye <br /> In March 1995,two 1 volume of the tE <br /> was,imported to backfill the remaining M y <br /> installed over the tank area <br /> G WELL INSTALLATION <br /> 25 SOIL BORING AND M0IVITORIN wells were <br /> ' sand three ground <br /> water monitoring to a depth = F <br /> and 02 June 1988,four soil boring California Boring B--1 was advanced w-z and` - <br /> Between 24"May GT ofMadesto, Welts MW-I, M <br /> 4 advanced and installed at the site by u <br /> 2 B-3 and B-4 were advanced to 10 feet sg <br /> feet bsg,borings B- � bsg with a screen interval from northeof the <br /> of 12 depth of 19 feetg collected <br /> 'r MW-3 were installed to a dep _ round water samples ,Qss� ssrtient Repo' <br /> ,Petroleum by <br /> drocarbons Were detected in soil acid g <br /> Results of the site assessment weretonnuded In t�ell locations are illustrated an Figure <br /> former UST area by GT Boring and mons g <br /> dated 01 July 19Sxa prepared les are summarized an Table 3 <br /> 2 Analytical results of soil same <br /> MW-,1 an the adjacent , F <br />` ' well MW-4 Was installed down-gradient"'a feet bsg <br /> l` onitormg advanced to a depth of 2 and screen set fxom <br /> On 19 August 1993, m ort - October 193 <br /> property north of flee site The baring was , <br /> toren well installation was described in the 4uarterly e� <br /> lie to 20 feet bsg Mona g Inc (GAS) <br /> prepared by Geological Audit Services„ , <br /> �. <br /> µ w <br /> 6 ADVANGE1vlENT OF SOIL PROBE BORINGS a Geoprobe ,<t <br /> were advanced at the site using <br /> t s B5 to B9) the between 13 5 and 15 5 <br /> = 1995,five`soil probe boring <br /> l On 22 January s robmgs)v�rere advanced to dep <br /> ab round water sample was collected from Probe <br /> 54Q0 probing unit Soil probe boring (p <br /> les from probing <br /> B5 and B5 at concentrations up <br /> feet bsg and sail samples were collected <br /> Onlsotl same e gr g ( and B7 at concentration up to 25 1 <br /> boring B9 TPI-1-9 r?, detec les from,probings B5, B s Bg and B9 nor in <br /> les from probe baring <br /> ppm TpH-d wasdetected in soil same irf locations are illustrated in, , <br /> m Petroleum hydrocarbons werc not detecte obe bo ig BS Probing' tical,results of tY e <br /> lir pp round,water`sample collected from p <br /> the grab g is of soil samples are summarized on'Tabie 3 `Analy <br /> Figure 2 Analytical resin _ <br /> Geoprobe water sample are summized[°ri Table c + <br /> 4° r G AND SAMPLING H a <br /> WATER,MONITORIN <br /> l ` 2 7 GROUND., <br /> I , 7 round water samples were call rfori d 13 occasions <br /> 1997), g was not pe <br /> Between June 1988 and Ja 1,993,regular quarterly monitoring <br /> ebruary <br /> However,prior to F + ' <br /> 1 1' <br /> 1 , <br /> a 1 l I P I [ <br />