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j f 1.2.2 Environmental Site Investigations On January 23, 1998, Ramage Environmental.published Site Investigation Report, which groundwater sampling and analysis from 11 Geoprobee soil borings. and documented the soil g anal ical results are The soil boring locations are shown on figure 2, and the soil sampleYt summarized in Table 1. line and gaso F �.. r Field observation and an laboratory.results ibe e h th as site,the c ty of Tracy right-of-way hydrocarbons had impacted soil and groundwater a cels to the north and east of the site. and other private prop Y i' (Hamilton Alley) p r ;. ring Well Installation and On January 27, 1999, Ramage Environmental pub �� nstallaaori of three groundwater table Groundwater Sampling Repo, which locum le collected from MW-2, monitoring wells (MW-1, MWS,? and MW-3). only the groundwater sample X northeast (dawn-gradient) of the former.UST source area, contained a concentration of petroleum hydrocarbons above laboratory reporting limits. The sample from MW-2 contained only 140.micrograms per liter;(L{g/l) of Total Petroleum Hydrocarbons (TPH)-as-diesel. The well locations are shown on Figurie 2, the well construction.details and groundwater monitoring data are summarized in Table 2, and the groundwater analytical results are summarized in Table 3. On February 18, 1999, the th1.ree monitoring wells were re-sampled, and none of the petroleum - hydrocarbon compounds analyzed were detected above laboratory reporting limits. As'a result, . . environmental corrective actions were discontinued at the site, but the case was never closed. ..A � �Y w � : t In January 2006, Ramage Environmental resumed quart hatthe ca se couter monitoring, ld be considered for LC i.M1 evaluate groundwater conditions beneath the ee monitoring wells have been sampled for 10 regulatory closure. Since January 2006,-the .p 2, consecutive quarters_ �fI to +'- 4'47 .. k x yh �L ,. 4Fi CEJ ane (1,2- 'fid i wu ortiUB.