Laserfiche WebLink
). H. KLEINFELDER & ASSOCIATES <br /> File No. S-1008-35 <br /> May 17, 1985 <br /> Page 10 <br /> groundwater and obtain water samples from all these wells. The most detailed information <br /> was obtained from well #2 N/9 E-1 LA1, located at the Hatler's residence. Depth to <br /> groundwater measurements have been made on this well continuously since 1959 . A copy of <br /> this record is included as Plate XIII and shows a gradual. aproximate 14-foot drop in the <br /> groundwater from 1959 to approximately 19 72. Between this time and approximately 19 82, <br /> there were significant fluctuations in the groundwater table, particularly during the drought <br /> years of 1976 and 1977. <br /> Considerable information was obtained from Mr. Purviance who lives at 7930 Waverly <br /> 4 <br /> Road north of the site. Mr. Purviance is in the well drilling business and installed the <br /> Hatler well. He explained that the majority of the wells in this area are 300 to 500 feet <br /> in depth. The Purviance well could not be sounded without removing considerable equipment. <br /> The location of known wells in the vicinity of the site are shown on Plate II. A <br /> summary of the well locations and water measurements are shown on Table U. Since <br /> information could only be obtained on 5 wells, only 2 of which were measured, attempts to <br /> use a kv meter to determine gradient and velocity were made on the one site well. Again <br /> considerable equipment would have to be removed to allow the use of the 2-inch diameter kv <br /> meter. Although limited data makes a determination of groundwater gradient difficult, it <br /> appears, based on the information described above that there is a mounding of the <br /> groundwater profile north of the landfill making the gradient in a westerly to south easterly <br /> direction. <br /> WATER QUALITY <br /> The groundwater in the eastern portion of San Joaquin County is almost without <br /> exception of excellent quality for all present beneficial uses. Cn April 11, 1985, samples <br /> were obtained from the onsite well near the shop, and the Purviance and Hatler Wells. <br /> These samples were delivered to Nelson laboratories for analysis and the results are shown <br />