Laserfiche WebLink
{ K <br />�7 <br /> Y <br /> Bf-Annuat Grourd•Water monitoring Report <br /> 13975 Highway 88 E <br /> Lockeford, Catffornla <br /> MGA Project No. 10.90-104 <br /> Page 2 <br /> ,s3ut ry of previous fork <br /> Previous work performed by Applied Geosystems (AGS) at this site <br /> includes the installation of four ground-water monitoring wells in <br /> June, 1987; issuance of a report evaluating the extent of petroleum <br /> hydrocarbons in soil and ground water at the site in July, 1987; <br /> and preparation of ground-water monitoring reports in October, <br /> 1987, April, 1988, July, 1988, and August, 1989. <br /> s <br /> RZBULTS <br /> e <br /> 1»st Table . levationa <br /> Water table elevations were measured by a representative of NGA <br /> for this report in September, 1990. The depth to the water <br /> surface was measured from. the north side --f the casing of each <br /> well. Water table elevations are reported L, Table 1. Water table <br /> i elevations range from a low of 28.06 feet msl to a high of 28.40 <br /> ` feet msl. A. pater table contour map (Figure 2) has been prepared <br /> in order to 'd[etermine the direction of ground-water flow at the <br /> site, Examination of.Figure 2 shows the direction of ground-water <br /> is flow at the site to be almost due South. The hydraulic gradient h <br /> of the water table at the site is calculated to be 0.002 foot/foot. <br /> .: TABLE 1 <br /> E <br /> Ground Water Elevations <br /> { <br /> Depth to Water aCasing Elevation Water Table Elevation <br /> e Well pie (feet Jaelow surface). (mean sea level) lee se . e <br /> 9/22/90 71.34 99.62 28.28 <br /> MW-2 .9/22''190 71.20 99.26 28.06 <br /> MW-3 9/22/90 71.74. . 100.00.1 28.26 <br /> NW.-A 9/22/90. 70.44 98.84 28.40 <br /> aAIl_elevations are referenced relative to an arbitrary elevation of 100.00 feet <br /> mean.sea'level (MSL) assigned to monitoring well MW-3.. <br />