Laserfiche WebLink
• <br /> The Eastern San Joaquin Subbasin is bound on the south, southwest, and west by the <br /> Modesto, Delta-Mendota, and Tracy Subbasins, respectively and on the northwest and <br /> north by the Solano, South American, and Cosumnes Subbasins. The Solano and South <br /> American are subbasins of the Sacramento Valley Groundwater Basin. <br /> The Eastern San Joaquin Subbasin is drained by the San Joaquin River and several of its <br /> major tributaries namely, the Stanislaus, and Calaverras, and Mokelumne Rivers. The <br /> San Joaquin River flows northward into the Sacramento and San Joaquin Delta and <br /> discharges into the San Francisco Bay. <br /> ZLI S/TF.GEOLOGY <br /> The subsurface lithology encountered during this investigation consisted primarily of <br /> sandy silt, silt with sand, silty sand, and well graded sand with silt to the total depth <br /> explored of 23 feet BGS. See Figure 3 for boring logs. <br /> 21.2 S/TEHYDROLOGY <br /> No groundwater was encountered during this investigation. <br /> 3.0 CURRENT SITE INVESTIGATION <br /> The objective of this site investigation was to obtain the necessary data to analyze the <br /> following: <br /> • Determine the mass of contaminated soil remaining in the former UST basin if <br /> any. <br /> • Evaluate the recognized environmental conditions identified in the 1996 <br /> environmental investigation conducted by Kleinfelder Inc. for the purpose of <br /> providing sufficient information regarding the nature and extent of contamination <br /> to assist in making informed business decisions about the property. <br /> On 3 December 2009, Hanover personnel and Ms. Lori Duncan from San Joaquin County <br /> Environmental Health Department (SJCEHD) oversaw the advancement of 6 soil borings <br /> utilizing direct-push Geoprobe® equipment. Sample location SB-6 was added to the <br /> scope of work due to physical observation made in the field. See Figure 2 for boring <br /> locations. All the borings were abandoned by trimming the annulus with neat cement <br /> slurry to grade. <br /> 12/22/2009 HANOVER ENVIRONMENTAL SERVICES,INC. 3 <br /> Soil Assessment Report <br /> McHenry Ave Project <br /> 1303 First Street,Escalon <br />