Laserfiche WebLink
San Joaquin Workplan <br /> TASK I FIELD TESTING <br /> We propose to install a total of three additional exploratory soil borings at the <br /> subject property at the locations shown on the site plan which is included as <br /> Figure 2 of this proposal. Figure 2 also illustrates locations of previously <br /> installed monitoring wells at the subject property. The purpose of these <br /> supplemental soil borings would be to provide additional data regarding the <br /> presence of hydrocarbons in subsoils. Field screening of the subsoils samples <br /> will help to describe hydrocarbons persistence in a vertical relationship to <br /> groundwater. <br /> All three of the exploratory soil borings will be completed as groundwater <br /> monitoring wells.The additional groundwater monitoring wells will be utilized <br /> to evaluate lateral migration of hydrocarbons in groundwater,and provide data <br /> for assessing groundwater depths, gradient, direction of flow, groundwater <br /> quality, in-situ hydraulic testing and possible future monitoring. <br /> . 7 . <br /> Based upon the previous site investigation, we anticipate groundwater occurs <br /> beneath the subject property at depths ranging from 10 to 15 feet below the <br /> existing grade. Please refer to Appendix A at the end of the text which <br /> summarizes the methodologies to be used for the proposed study. <br /> TASK H FIELD TESTING <br /> d � <br /> In order to evaluate the feasibility of possible groundwater extraction and <br /> gradient control, it will be necessary to properly characterize site-specific <br /> hydrogeologic parameters. The most significant parameters include porosity, <br /> groundwater gradient, saturated thickness, hydraulic conductivity and trans- <br /> missivity. <br /> Aquifer porosity will be estimated in two ways.The first will be by comparison <br /> of soil type description with empirical relations. The second method will be <br /> from calculations using a soil bulk density.These two methods will provide a <br /> range of reasonable value for aquifer porosity. <br /> Project Number: JOAQ22192 Page 5 of 11 <br />