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8 <br /> 7-Eleven/Stockton <br /> August 1989 <br /> Since the first groundwater monitoring data were collected <br /> in May 3.986, local groundwater-table elevation has declined <br /> steadily in response to prolonged drought conditions in the <br /> This decline in the groundwater levels is de- <br /> Stockton area. 8 and MW-9 (See Figure 3) . <br /> picted in the hydrographs for MW-7, Mw- <br /> Monitoring wells Mw-7 and MW-3 are representative of the majority <br /> of wells at the site. The one exception to this hydrograph <br /> is the data from MW-9 which reflect a �oatding of�he rearthe <br /> profile water pip <br /> of <br /> groundwater surface due to a leaking <br /> the 7-Eleven Store. <br /> In April 1989, this leaking water pipe was <br /> repaired and the mounding condition has been corrected. <br /> ._ 5 and 6) represent <br /> Groundwater Gradient Maps (Figures 4, <br /> 'nter reted groundwater-table elevations beneath <br /> The the <br /> regional r <br /> the i p reporting period. <br /> each of the three months in this as <br /> groundwater-gradient direction remaisashiftuinethe'gradient <br /> reported in the past. However, a <br /> slightof <br /> direction toward the east-northeast was observed at the end f <br /> .� dire ft to <br /> the reporting period. The gradient increased from O.D02 ft/ <br /> O.005 ft/ft during the three month period. <br /> , which previously <br /> contained free <br /> Monitoring well MW-3 <br /> �^ riod. No other <br /> duct remained dry during this reporting pe <br /> pro , <br /> free product was observed. <br /> W... GROUNDWATER SAMPLING AND ANALYSES <br /> _ wells and nearby <br /> Sampling of the groundwater monitoring <br /> Prformed on six separate occasions during <br /> __. domestic wells was P- Samples were collected in accordance with <br /> this reporting period. 10, 11 and 12 <br /> GTI's standard operating Procedures (SOPS} 9, <br /> GNB i.nu a ti.k <br />