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ENVIRONMENTAL SCIENCE& ENGINEERING, INC— <br /> CONCORD. <br /> NGCONCORD,CALIFORNIA OFFICE <br /> STANDARD OPERATING PROCEDURE NO.2 <br /> FOR MONITORING WELL INSTALLATION AND DEVELOPMENT <br />' PAGE 2 <br /> technician will monitor the ground water purged from the well during dcmlopment for clam%temperature~pH <br /> and conductivity. Development of Cho well wUl proceed until the well produces reladvdy dear,sand-free water <br /> with stable temperatarre,pH and condadxvity measurements. At a minimum.IO wr,Il-casing volumes of ground <br /> Prater will be moved during the dcw opment process. Measur ments of tempo aturc,conductivity,pH and <br /> volume of the purged water and abservatiaus ofpurg�c water clarity and sediment content will be rceaordod on <br /> the ESE well Dcv�Iopmcnt Data Forms. All t used during the well dcvdopmart procedure will be <br /> cleaned using as Ak*n ox*detetgont and tap water solation foIlowed by a tap water rmse prior to use in each <br />' vxX Ali ground water purged during the well development process and all equipment rinse water will be <br /> collected and coatasnod onsite in DOT approved coutaizrcts(typicaIIyZ-gallon drums)pending analytical results <br /> and proper&sposd or regclingr <br /> • <br />