Laserfiche WebLink
NEWS�.s� x �t ���., _ _ Y Ddb. �F _ a- J� by,� rw i� Jnr�« µ. ��er. Y�,�- +��,�„�, �fi` 'i" �•; ,�, a <br /> eo- " <br /> N . <br /> I <br /> € Ms. Diane Hinson <br /> a April 13, 1990 <br /> Page 2 <br /> 1 <br /> a.s <br /> Because of the C¢stence of a 4-foot layer of free product in monitoring well�tW 2,an air operated <br /> free product skimming system was installed at the site as an interim measure to recover as much <br /> firs:-flo ting petro.eum product as possible. Prior to installation of the free product skimming system, <br /> f` free product was manually bailed from monitoring well MW-2 weekly, <br /> I <br /> Yue se <br /> !A <br /> The purpose of this letter report is to provide an update rf interim remedial activities that have been <br /> conducted a: the site during s�ation reconstruction. Tie following information is included: <br /> a The plans and design assumptions used in designing the manifold system. <br /> i <br /> • Tl:e plans, maintenance,and monitoring procedures that will be employed during operation <br /> of the interim product pumping system at the site. <br /> ` • A project schedule for additional site assessment and final remedial action implementation. <br /> Scape.of Work <br /> The rcope of work completed since submittal of the preliminary soil and ground water investigation <br /> results on March 6, 1990, is as follows: <br /> • Installation of monitoring wells MW-8 and MW-9 on March 19, 1990. <br /> • A ground water pumping and vapor extraction test was conducted on March 20 and 21, 1990, <br /> to obtain hydrogeologic data, hydrocarbon concentration Ievels, and flow parameters fox. <br /> remedial system design. <br /> Construction of a fenced area to house interim product recovery equipment and product <br /> storage, <br /> • Installation of a temporary electrical ser%dce to operate the interim free product skimming <br /> equipment and subsequent remedial equipment. <br /> i Contact with the following agencies regarding permitting of remedial equipment and processes: <br /> f The Stockton Fre Department was contacted regarding temporary product storage <br /> resulting from interim free product recovery operations. <br /> The City of Stockton was contacted regarding disposal of ilte'pump test water to the <br /> sanitary sewer and also regarding long-term discharge of ground water resulting from <br /> remedial action. <br /> The San Joaquin County Air Pollution Control District was contacted regarding emissi'+ns <br /> ., from the vapor extraction test and the long-term discharge resulting from a soil venting <br /> system. <br /> �. Local building authorities were consulted regarding the temporary electrical service. <br />