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activities because of the need to obtain the cooperation of off site property <br /> owners to permit drilling on their property. <br /> This report should incorporate the Preliminary Report Information In summary and <br /> delineate the problem accurately by including: <br /> Pagination <br /> Tables summarizing raw data such as compound concentrations found <br /> i <br /> Figures delineating horizontal and vertical extent of a plume <br /> Depth to first and second ground water <br /> Ground water gradient based upon recent data <br /> Soil stratigraphy based upon borings, wells, trenches and supporting logs <br /> Local wells, buildings or utilities Impacted or potentially threatened <br /> Defined extent of soil and ground water contamination, the "ZERO LINE" <br /> Floating product found--depth and extent <br /> Investigate and submit proposals and costs for at least: <br /> a. Excavation <br /> b. On-site soil aeration <br /> c. Off site soil treatment <br /> d. Landfilling <br /> e. Soil venting <br /> f. Ground water extraction and treatment by <br /> aeration,carbon filtration, pump to sewer, etc. <br /> gg Biodegradation--soil and grouna water <br /> li. Physical containment <br /> 1. Chemical neutralization <br /> J. No act ion <br /> Some alternatives may be eliminated as simply not feasible for the site. For <br /> instance, soil venting is practical in sandy soils but difficult to justify for tight <br /> clay soils where biodegradation or excavation may be a better consideration. <br /> In order for our review to proceed and the tank owner to be back in business as <br /> soon as possible, a concise, complete report is necessary. We Oo not have the time <br /> to Interpret pager of raw data and attempt to explain them to the tank owner. <br /> Note: if disposal in a landfill, sewer line, air stripping, etc are proposed, the <br /> consultant must have assurances from the regulating agency that the activity is <br /> acceptable. <br /> Site maps and soil data are to be reported as follows: <br /> 1. All maps oriented with north up on the page, <br /> 2. A bar scale included, e.g. -- -S-__._-I_ - -S. = 10 feet, <br />