ARCHIVED REPORTS XR0000027 - Laserfiche WebLink

Home Browse Search

2.2.2 CPT Log Continuous soil lithology, from ground surface to a depth of 100 feet, was evaluated at the CPT-A boring location (see Figure 2) using Gregg's electronic cone system The electronic cone, located at the bottom of a driven rod, measures physical soil parameters that are computer evaluated to interpret subsurface stratigraphy and produce a geologic log That geologic log is contained in Appendix A of this report Upon completion, the borehole for this CPT boring was properly abandoned (as witnessed by EHD) by filling it with grout / 2.2.2 Soil Sampling Seven soil borings were driven with Gregg's CPT ng in the vicinity of fir, the former gasoline USTs These borings were designated CPT-A, p CPT-B, CPT-C, CPT-D, CPT-E, CPT-F, and CPT-G The CPT-A V/1"' , � boring was placed within a lateral distance of one foot from the vy A r"" original borehole that provided the electronic-interpreted log g�Cj !��EJ Five soil samples were collected from six of the borings at depths of P g p bd rvhs'1�� 15, 20, 25, 30, and 35 feet Soil samples from boring CPT-B, placed at the location of the former fuel dispenser, were collected at depths of 10, 15, 20, 30 and 35 feet Soil samples were collected by pushing a drive rod to the specified depth The inner tip of the rod was retracted twelve inches to expose a hollow soil sampler containing two 1 1/4-inch diameter by 6-inch long sample tubes The hollow sampler was then pushed in an open locked position to collect soil The drive rod was retrieved to the surface where the filled tubes were collected The contents of one tube were emptied by PSC's geologist into a zip- lock bag for subsequent physical description and measurement of organic vapors using a photoiomzation detector (PID) Geologic logs with soil descriptions and PID measurements are contained in I Appendix A of this report The second tube was capped, labeled and stored in an iced chest until those identified for subsequent laboratory analysis would be selected Two samples from each boring, those having the highest PID measurement, were typically selected for analysis The site geologist's judgement, based on the desire to provide soil data across the entire profile, may have been used for sample selection if PID measurements were essentially the same Soil samples were delivered under chain-of-custody control to Severn Trent laboratory (STL) in Pleasanton, California for analysis Soil samples were analyzed for TPH-G, BTEX, TBA, MTBE, ETBE, P1 PE:, TAME, 1,2-DCA and EDS Ql,f a� a June 2404 Site investigation Report The Earthgrains Company Facility 2651 South Airport Way-Stockton,CaJifomia Prepared for SARA LEE BAKING GROUP Prepared by Philip Services Corp H ENV\624001321E21362EG5Smckton\T nc 2004 investigation Report doc August 9,2004