Laserfiche WebLink
3 <br /> KL,EfV1fI.f1fK <br /> addition, the sampling equipment was cleaned with a trisodium phosphatic <br /> wash and distilled rinse water prior to the collection of each soil <br /> sample. <br /> Soil samples were collected by advancinp• the boring to a point immediately <br /> above the sampling depth and then driving a Modified California Sampler <br /> lined with three brass tubes into the undisturbed soil. The sampler was <br /> then removed from the bottom of the boring and the bottom (third) tube <br /> sealed with aluminum foil and tight-fitting plastic caps. The sealed tube <br /> was immediately stored in an iced cooler for possible chemical analysis. <br /> Soil samples for chemical analysis were shipped under chain-of-custody to <br /> Ceotest in Long Beach, California, a certified laboratory. <br /> Each boring was closed after collection of the soil samples. Closure was <br /> by grouting to the surface with tremie rods. The grout mixture consisted <br /> of potable water, Portland cement, and a G to 6 percent bentonite clay <br /> gel. <br /> A Photovac TIP (PID) using a photoionization detector was used in the <br /> field to screen each soil sample. The PID measures ionizable compounds in <br /> ry the air in parts per million by volume (ppmv). Calibration was with 50 <br /> ppmv benzene as a span and ambient air as zero. The geologist used the <br /> PID to screen the soil within each middle tube of the sampler. The top <br /> layer of the soil within the tube was removed and the headspace <br /> immediately monitored with the PIA. The reading was noted as the field <br /> - screening result. <br /> _.. The PID readings and other observations were used to select samples to <br /> submit for chemical analysis. Selected soil samples were analyzed for . <br /> total petroleum hydrocarbons (TPEi) using the DHS recommended procedure <br /> (GC-FID). The samples were also analyzed for volatile Promatics--benzene, <br /> toluene, xylenes, and ethyl-benzene (BTX&E)—using EPA flethod 8020. A <br /> total of ten soil samples were analyzed from the five borings. A copy of <br /> the Geotest report including_chain-of-custody._.farm.._..as._erclosed._as_Appendix _____.___ . <br /> C. Samples not selected for chemical analysis were transported to cold <br /> storage at Kleinfelder. <br /> 85-88-219 4 <br />