Laserfiche WebLink
Olds/Buick <br /> June 16, 1993 <br /> - Page -3- <br /> collect soil samples. =xike. Collins .of .the ;San _Joaquin Count <br /> z.. <br /> Environmental Health Division was on siteto observe the field <br /> activities and direct the sampling. <br /> Over-excavation_ began �at the former UST location and <br /> y ` <br /> or vault was - <br /> continued <br /> as _continued north vrest, -where a concrete drainage <br /> -concresump <br /> cla e silt sand'was-present from' the <br /> located. T Dark brawn. Y .Y► y' -.y. y <br /> ground surface to a depth of approximately 4 feet: From the 4 <br /> foot de th to a depth of approximately -9 feet,z light brown, <br /> P . <br /> clayey, silty: -sand was present. Olive-b=own petroleum <br /> hydrocarbon stained soil was encountered: in the excavation to the <br /> Y ,r - <br /> north, west and east, with most of the .staining adjacent to the <br /> drainage: sump to the" north west. The sump-,was removed and. the <br /> stained _soil was excavated from the floor.,and sidewalls of the;; <br /> excavation. No. remaining stained- soil wais -noted on the floor-or <br /> t. <br /> sidewalls of- they final excavation. -The soil-'removed during the <br /> over-excavation was stockpiled- on site ...for- future disposal. <br /> .Following field activities, the stock ile and excavation were <br /> surrounded-with temporary chain :link- fencing. - <br /> Verification soil samples were;.collected from the final <br /> excavatiori�and analyzed at` .the direction;,of the San...Joaquin <br /> x County-.representative (Mike3Collins) One soil sample was <br /> collected from each sidewall at a depth of approximately,,15 feet <br /> _., CONDOR <br />