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r i+'.;! _._;� Y - � -"a� A '.wk-', `�7 5. crF Rka'r +5. � �- _�,..� :"� M 3' � f .5a •_E & <br /> F <br /> f' <br /> } May 23. 1091 <br /> ! Quarterly Monitoring, First Quarter 1991 AGS 38012-7 1 <br /> ! Station 2 <br /> Former Unocal Station Stockton, California <br /> round- ater ell ,�urv� <br /> Company(Nioldenhauer) of Davis,California.(Registered Civil <br /> Moldenhauer Engineering positions ("x"and"y lateral coordinates) <br /> Engineer No. 17381) surveyed the elevations and p " c 1 <br /> Ethe wellheads monitoring wells MW-1 to m iN-5 on September 21. 19&9. Moldenhauer <br /> measured the monitoring wells with respect to the City of Stockton bench mark 2S-2 at ilte <br /> intersectionof Harding Way and Pacific venue. <br /> According <br /> to Moldenhauer personnel, $ench Mark 2S'2 is referenced to the United States <br /> bove mean <br /> Geodetic Survey with an elevation of 10.33 <br /> Oth of 01 foot of Bench Mak 2S-2.sea level. a elevation <br /> hor zon al <br /> monitoring <br /> wells were referenced to 'ons were taken at a permanent <br /> distances were measured to the nearest 0.1 foot. The e evatt <br /> notch or arrow on the well casing. <br /> } lino and Nastidlin� <br /> II �aaie Labe <br /> Water samples were preserved in labor teo rvat ve. Til water samples r glass t were als as sled with <br /> concentrated hydrochloric acid as a P <br /> Teflon-lined lids to eliminate air bubbles. <br /> on.monitoring well <br /> The sample containers were ict'eled inthefield withtl�n iced searage tfor transport o tha <br /> number and depth, and data, and promptly placedin the field that <br /> laboratory. "rhe geologist uncertified by the State of California for the analyses c requested. <br /> tiated Chain of Custody Records <br /> the samples e a laboratory promptly. Samples in our custody were properly <br /> Samples were transported to the laboratory p Y• <br /> disposed of after their useful life had expired. <br /> - , /WA0d GVOSYStems <br />