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QUALITY ASSURANCE/QUALITY CONTROL <br /> PROTOCOLS <br /> -\ <br /> The following licensed professional people will be involved in <br /> this project. <br /> ~~ <br /> Geologist: Richard Merriam, Certified Engineering Geologist <br /> California Registration # 850. <br /> Environmental Assessor: John Cussen , REA 1979 <br /> ~~ Drillers: Will have a current C-57 Drilling license. <br /> Laboratory: Will be a California State Certified Laboratory. <br /> ~~ Drilling Monitoring Wells: <br /> All downhole equipment will be decontaminated using steam,to <br /> clean off all soil prior to use. Wells will be drilled with a <br /> ~ continuous flight hollow stem auger. All wells will have a <br /> diameter at least 4 inches greater than the casing diameter <br /> (OD) . <br /> Prior to removing any equipment from the hole the TD will be <br /> _. measured. Once the casing is placed in the hole an accurate <br /> ~+ measurement of the total amount of casing must be made. The <br /> difference between the two figures will be explained by the well <br /> logger. <br /> ^� All drill cuttings will be placed in drums, sealed and the <br /> drilling intervals for the cuttings in each drum will be written <br /> on the drum. <br /> -~ <br /> Completion: <br /> ~~ Slotted casing (0.02 inch slots) will be capped with a bottom <br /> plug. The slots will extend 5 feet above the estimated water <br /> table indicated during drilling. Clean # 3 sand will be placed <br /> opposite the slotted casing and 2 feet above the last slot. At <br /> ^� this time the well will be surged for 10 to 15 minutes to <br /> attempt to eliminate any voids in the sand pack. At the end of <br /> the surging the top of the sand will be measured and additional <br /> sand will be added if necessary. Directly above the sand a 3 <br /> foot plug of bentonite will be placed. Above the plug a seal of <br /> cement grout will be placed to the surface. The top of the <br /> casing will be capped and a traffic box and will be cemented in <br /> ^~ place around and above the top of the casing. <br /> The well will be developed by bailing within a day of drilling <br /> '^ to remove most of the sediment within the casing and to remove <br /> ��- bridging fines within the slots and sand pack. This will be done by <br /> surging using the well water if possible, if not then only <br /> potable water may be used. A log of the amount of introduced water <br /> will be kept and its use will be kept to a minimum. Bailing and <br /> surging will continue until the water does not contain any fine <br /> silt and or clay. <br /> ~~ 14 <br />