Laserfiche WebLink
Draft <br /> . consistent with the types of soils present in the subsurface (1 e , the organic <br /> content of clays is generally higher than sands) <br />' 2.3 SLUG TESTING RESULTS <br /> To aid in the evaluation of site hydrogeology, ERM performed slug testing <br /> in monitoring wells MW-1, MW-2, MW-4, and MW-6 Slug testing <br /> procedures and analysis methods are presented in Appendix C along with <br /> the test results <br /> The analysis of the slug test results indicates that the aquifer permeability <br /> Y g q P tY <br /> ranges from 181 x 10-5 centimeters per second (cm/sec) at MW-4 to <br /> 1 59 x 10-3 cm/sec at MW-1 These data correlate to the hydrogeologic <br /> data presented previously <br /> The results of the slug tests indicate that the permeability of the shallow <br /> soils is relatively low This is further shown by the limited migration of <br /> TPH-g and BTEX in ground water at each UST location Based on <br /> sampling at the site, the downgradient extent of TPH-g and BTEX <br /> compounds at each former tank location is less than 150 feet, which would <br /> 10 be expected since the tanks were taken out of service in the 1960s The <br /> limited migration of chemicals at the site is also suggestive of very low <br />' permeability soils <br /> t <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 0 <br /> 1 <br />' 6 <br />