ARCHIVED REPORTS_XR0007380 - Laserfiche WebLink

Home Browse Search

jr1t 1,4 +I .r r J . H . KI:EINFELDER & ASSOCIATES GEOFIC HNICAL CONSULTANTS . MATERIALS TESTING ENVIRONMENTAL RESOURCES •1'•1•. lIl1�lNl�ti IASL i)RIVI ♦13tH 1) %At ItAMI N111 l A•ISK27 174-1 1•I l t.l Ihfr 170 1 May 21, 1987 File: 24-2058-1 Sacramento Equipment Maintenance, Inc. 2533 Connie Drive Sacramento, California 95815 Attn: Linda Steiger SUBJECT: Soil Sampling at AT&T Facility, West Turner Avenue, Lodi, California Dear Ms. Steiger: The following is a brief description of the soil sampling program implemented on May 14, 1987 by Kleinfelder & Associates at the AT&T facility at 157 West Turner Avenue, Lodi, California. 1 Briefly, the program consisted of collecting soil samples from an open excavation that once contained a diesel tank and from the excavated soil 'l adjacent to the original tank location. ' SAMPLING AND SCREENING PROCEDURE A backhoe was used to excavate relatively undisturbed soil from the open ' excavation. This soil was placed in a Mason jar and the head space was screened for petroleum hydrocarbon constituents with a photoionization detector (PID) . A sample was then collected for chemical analyses by driving a 5—inch brass tube into the soil in the backhoe bucket. In the open excavation sampling was performed along two vertical profiles on the apposite walls of the excavation. Samples were collected at depths of 8, 10, 12, 15 and 18 feet on each vertical profile. An additional isolated sample was collected at 15-foot depth. The samples submitted for chemical analyses were from the 12-- and 18-foot sampling depths from each of the vertical profiles, and the isolated sample from 15 feet. Plate 1 illustrates the sampling locations in the open excavation. Table 1 lists the sample locations, PID screening results, and samples retained. ' From the excavated soil, four sampling locations were chosen to measure the head space with the PID and collect samples in a brass tube. At each location samples were collected at shallow, intermediate and deep depths. Table 2 lists the sample locations, PID screening results, and samples retained. Plate 2 presents the sampling locations from the excavated soil, From each of these sampling points, the sample with the highest PID reading was submitted for chemical analyses. r y c c I 1 If R(I)Iii IS,W i11n.1 to"l • %unnyvah •. Sati R oclun . Rc no • SIfM IA•nl • I ptieq • Ia1rf1id O Rc.hn.it Pack • M1tc 1,4 d • lu.An,•lc 1 n Yc ga, • ii (A Mit- Utah