Laserfiche WebLink
Report on Subsurface Environmental Exploration (Soil Borings) Page 3 <br /> A & M Market, 4579 East Acampo Road, Acampo, California November 9, 1992 <br /> Quorum Environmental Consultants, Inc , Project 92-120-2 <br /> 1 6 Observing the drilling of up to three additional borings (B-5 through B-7) <br /> approximately 15 to 20 feet from the tank cavity if hydrocarbons were detected in <br /> the four borings B-1 through B-4 <br /> 7 During drilling, monitoring the soil for levels 'of hydrocarbon vapors using a <br /> photoionization detector (PID) These readings and other observations such as <br /> discoloration or obvious odor would be used to decide the final depths of the four <br /> initial borings as well as the need for any others <br /> 8. Collecting driven soil samples from 5-foot intervals (at a minimum) from the depth <br /> of the existing ground surface to the total depth of each boring <br /> 9 Classifying the soil samples in accordance with the Unified Sod Classification <br /> System and packaging the samples for storage on ice and transfer to the analytical <br /> laboratory <br /> 10 Observing backfilling of the borings with neat cement tremied into place by the <br /> drillers <br /> 11 Submittingselected sod samples to a State-certified laboratory for analysis of total <br /> P <br /> petroleum hydrocarbons as gasoline (TPHg) and for the hydrocarbon constituents <br /> benzene, toluene, ethylbenzene, and xylenes (BTEX) using Environmental <br /> Protection Agency (EPA) modified Methods 8015 and 8020, respectively A <br /> minimum of two samples from each bonng were to be selected for chemical <br /> analysis, and the need to analyze additional samples was to be evaluated in the <br /> field <br /> 1 12 Interpreting field and laboratory data to evaluate the lateral and vertical extent of <br /> hydrocarbons in soil below the former tanks <br /> 13 Preparing a report describing our methods, procedures, and findings, and <br /> recommending appropriate remedial actions <br /> The scope of services for the subject phase of the work was limited to that described <br /> above, the scope did not include study of ground water, subsequent soil excavation and <br /> aeration, or any further phases of study and remediation that may be recommended as <br /> ' a result of this exploration or review by regulatory agencies <br />