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f R <br /> 4' <br /> f <br /> with teflon and sealed with plastic caps, <br /> tightly v:rappccl with <br /> taFe!, and }:Opt. in cold storage for trane•port to the chemical <br /> laboratory. <br /> Ater bccz-inc) :i]t�• c]�:y' <br /> -)L) ,cs v:ere ters.inated in ej r,on-.:'- <br /> + � ace•d o, sitO <br /> f r .4 ch bar i ng v:e.-e p- <br /> The drill cu`.tin' ji, or ea c eau_^.? tr'c c';' . cr._ <br /> l�liC ;+V� i_ T i 1 �'_ aC'C _oC `i � the <br /> cr. ;i V. at fejt <br /> an cre54na� Pa. ,. v:asr placsw a l <br /> r�su]ts. <br /> t c <br /> rC•`t[-C' '-f'?':CF?E'a�:};rDiS'�-` �on4 a rrca ar�..•El a'=7:tYP.=7wt' re.:i:�'�t.E <br /> F r -rent <br /> Tn:iron7,C I GI 1 Por la•i-• <br /> �l,out vias placea at,oVr- the bentonire se nor} it `'a'1lts and <br /> L'SEG1 to seal the fll �:+��UuntCd, 4i�t@Yt1L�..t Of <br /> y `� `:Elly In <br /> an to t.,e <br /> locking waterproof caps were placed P <br /> R r_ f.-c;-, enter-, in,-,, the 'r:eii. <br /> order to prevcnt surface rinoff _ <br /> g, soil and Groundwater Conditions <br /> S conditions encountered during drilling <br /> The aeneral sand and old asphalt a. the <br /> ,. <br /> consisted of compacted silty sand <br /> surface. Then from a few inches to 10.5 feat a fine <br /> layer with some thin localized <br /> acoarser <br /> ayerais and �coa�:;er, fire lti--r zones �rao <br /> encountered. Beneath this fine '-o be the <br /> grained sand which is believed soils are <br /> medium quartz water bearing zone, Below this zone, and <br /> principal upper <br /> generally finer beginning <br /> Frith fine sand, then a silt, <br /> Water bearing silty clay zone where the borings <br /> final..y a non waThe wells range. from 25 to 30 feet in depth• <br /> were terminated. <br /> Groundwaat the <br /> ter was enclaterrlevelbetween <br /> measurementsltakenfeet <br /> on February <br /> time of drilling. 5 feet. Each <br /> 11, 1957 yielded water levels between 14 and 1 . <br /> well was purged of at least three well volumes C water with a <br /> portable hand Pump. A cleaned acrylic bailer was <br /> then lowered <br /> down the well to retrieve a water samp�r, in cold storage for <br /> sealed in a <br /> teflon capped jar and p The Lump and <br /> transportation to the chemicals laboratory <br /> each sampling <br />_ acrylic bailer were washed tunee of p ed water were placed <br /> effort between wells. The volumes of purged <br /> in the 55 gallon drum provided by Manteca Bean Company and left <br /> on site pending chemical results. All of the wells exhibited <br /> fairly strong petroleum odors. Sheens or visible p <br /> the water samples, <br /> (fuels) were seen on the purged water and in <br /> C. Wellhead Elevation Surve <br /> Wellhead elevations were established in <br /> Appendix determine <br /> The <br /> groundwater flow direction at the 51t26, ( 1987 at which time <br /> survey was completed on February <br /> additionalAter l vel easurte l)ents and product depths9.0 were <br /> taken for each <br /> 2 <br />