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Mr. Gerald Djuth <br />January 20, 2006 <br />Page 4 <br />rl <br />once per <br />well volume and recorded on a well development form. Well development will <br />be considered complete when: <br />1) a minimum of five well volumes have been removed; 1-t parameters stabilize to within <br />2) three successive measurements of the water q Y <br />10% of each other, measured 10 minutes apart; and <br />3) <br />turbidity is less than 5 NTUs (visually clear if a turbidity meter is not available). after 10 <br />If the above development criteria are not ditio denoted in pront will jectbdfield logbook. <br />well volumes have been removed and con <br />Waste Handling p roved <br />All investigation derived wastes (IDW) will be contained in 55 -gallon, DOT -approved <br />the end of each work <br />nd moved to a staging location adjacent to the GWETS�ell development will be <br />drums a ment decontamination r <br />day. Waste water produced by equi p <br />clarified and decanted into the groundwater treatment influent <br />sposed tank.Construction <br />thedrilling <br />debris and PPE waste will be removed be properly <br />subcontractor. Soil and sediment wastes will be contained ofsuitability for Class <br />temporarily pending environmental analysis. Upon verificationa waste - <br />ill be hauled to Forward Landfill, Manteca, CA, by <br />disposal, the drums w <br />handling subcontractor. <br />Submersible Pump and Sampling <br />The pump type selected for this installation is a variable speed, rated to yield 3 toe4 <br />submersible pump (Grundfos Model 5SQE03A-90). P <br />gpm given the applicable head conditions. This rdimodel ent exof traction we 1s,ewhich areeones <br />capable of functioning as well as the other downg <br />speed pumps actuated by downhole water level d to replace a damaged rs. A variable anddstP k pump <br />mp was <br />installed in extraction well GW -3 in January <br />It has operated without problems since that time and has maintained that portion of the <br />groundwater capture area according to expectations <br />Following installation of the well and piping, water <br />to the es wi lb monitori <br />ill <br />immediately. Thereafter, the well wdngrplanom cto be <br />III be a <br />sampled on the same day as the other six extraction ls forAll <br />halorgenatedtVOCer sl(Meth d <br />be analyzed by the standard project method for analysis nigroundwater sample analyses will be <br />SW 802113) with a reporting limit of 0.5 pg/L. <br />performed by the project analytical laboratory (SPL, Houston, TX). <br />Proposed Schedule <br />weeks <br />Drilling for the well installation is tentatively scheduledstallarion htake aslbeen pprovedace within eby Lon <br />after the RWQCB accepts this plan. Access and to <br />