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.,_.- 206 -.nf _ _rA <br /> M9 <br /> .E <br /> R <br /> f:.4 <br /> currently in use but was <br /> property to the north of.the Previously used <br /> diameter irri pumping plant, to irrigate city <br /> specific construction data approximately This ®fight inch. <br /> Wellhead construction details could 1 - feat dgep' d. <br /> The non functioning not be obtained. <br /> € removed the g Pump from are presented in appendix I, <br /> and well sampled this well is scheduled to be <br /> constituents and fecal Pled £or diesel <br /> SJCPHSEF4D. Pending coliform per requirements <br /> i , abandoned in accordance with laboratory testin qthe <br /> uiSements of the <br /> state requirem nts,Well w 11 be <br /> �.r <br /> 3.0 Investigation Procedures <br /> 3.1 Drilling <br /> on oatober 17. <br /> depths rangingand 18' I9H9 six soil barin s <br /> borate from 16 .to 36_ feet-balOV. grade-.ere.drilled to <br /> to MWis.were completed as gsoundwater.;:cionitorin Fahr <br /> • Drillin of the,, <br /> Inch diameter g )s conducted with a 8_61 g walls (�1: <br /> ng <br /> hollow-stem augers. rig using eight <br /> Performed under the direction The drilling <br /> maintained a continuous of a field was <br /> using the Unified Sail Classification 9 Of the system geologist who <br /> The well borings wereencountered <br /> MW1, Initiallydrilled in numerical order pendix Ix), <br /> gradient direcionbein believed to be In the down with well. <br /> no indications of g the first well cam groundwater <br /> detected b significant hydrocarbon Pleted. Because <br /> the next y field inspection Burin contamination <br /> boring MW Inspection was drilled on the iling aE this were <br /> side of the tank Opposite well, <br /> noted in this boring Slight to moderate dlessl.:Od herly) <br /> such, the 9 between .:2 and 16 feet. below. odor was. <br /> gradient was expected to be in grade. ..As- <br /> Provide far down P this direction. <br /> wells MW2 gradient definition of the To <br /> and MW3 were installed contamination <br /> northeast of the former tank to the To <br /> elevation was calculated b Pit. The relative and <br /> surveying wellhead elevations after monitorthe depth <br /> groundwater <br /> well.. This data P to water and <br /> confirmed that thea °n of each <br /> close as possible to the Well F TQ � <br /> SBI: u/J..tazk location. was located as <br /> and; 582 were 'dri>'_led,. to ' assess .. Soil borings <br /> soil` were <br /> the lateral <br /> Because there were to the east: and.. wer est of al xtent of <br /> location wase <br /> s not known the driOf lling utilities source. <br /> exact <br /> limited. g locations were severely <br /> The wells <br /> were constructed <br /> threaded F480 PVC screen of two inch diameter- flush- <br /> `� _ _ used in well construction. <br /> No glues or solvents were <br /> Placed In the annular Monterey silica sand <br /> screen. A two foot bentonite around seal was ch <br /> was <br /> the O.a20 in slotted <br /> sandpack prior to placed <br /> Specific well surface sealingabove the <br /> �. construction with neat cement. <br /> Appendix II. The soil details are presented . in <br /> soil borings were abandoned by <br /> i <br /> 2 <br />