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Table B-2 <br />Historical Groundwater Gradient Data <br />Date <br />Approximate Flow <br />Direction <br />Approximate Groundwater <br />Gradient feet per foot <br />03/31/14 <br />N880E <br />0.0066 <br />06/13/14 <br />N660E <br />0.0029 <br />09/10/14 <br />N720E <br />0.0057 <br />12/23/14 <br />N750E <br />0.0065 <br />06/24/15 <br />N630E <br />0.0052 <br />03/04/16 <br />N620E <br />0.0048 <br />10/11/16 <br />N770E <br />0.0039 <br />03/10/17 <br />N600E ` <br />0.0054 <br />09/17/17 <br />N670E <br />0.0046 <br />03/19/18 <br />N570E 2 <br />0.0030 <br />Notes: <br />Depth to water is measured at Stallworth Auto Sales with permission from the property owner. Corrected after <br />normalizing wellhead elevations to well MW -1 based on Eric Ohlson & Associates survey (11/22/13). <br />= Groundwater measurements from site well MW -1 and Stallworth Auto Sales wells MW -3 and MW -5 were used for <br />groundwater gradient. <br />= Groundwater measurements from site well MW -I and Stallworth Auto Sales wells MW -2 and MW -4 were used for <br />groundwater gradient. <br />oject\5000_prj\5960 SJC UST RFQ\5960B County of San Joaquin - Records Center\5960134 Records Center\Reports\2018Q1\Tables A <br />3 - Copy.xls <br />