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V <br /> 19 October 2007 <br /> AGE-NC Project No.95-010 <br /> Page 5 of 6 <br /> 3.4. WELL DEVELOPMENT AND SURVEY <br /> Development of the proposed wells will consist of a combination of bailing'with a stainless steel <br /> bailer to remove:the major portion of e-grainerl sediment from inside the-well,,surging to flush <br /> out-or draw in sediment from the filter pack anti additional groundwater evacuation(purging)-with. <br /> a,sible pump to finish the removal of,fine-giried sedimient.Developmental purging activities <br /> will bie-,eontinued until field parameter(pH;electrical conductivity,and temperature)feedings have <br /> sized and purged water is visually sediment:free. <br /> Adds ionally,the well-head.eleva(ions and will be surveyed by a:California.licensed surveyor. <br /> . 3.5; EQUIPMENT DECONTAM NATIOri <br /> Ail aampling:toois used for salecollect aion'will,he thoroughly rinsed with� clean water after being <br /> wh witha solution-ifAlconox .All down-hole drilling and sampling equipment will be pressure <br /> washed prior to starting the boring: <br /> 3.6. GROUND WATER MONTI'OltlNG PROCEDURES <br /> Gioundwatersample collection will,be performed in accordance with.EHI)guidelines(San Joaqutn <br /> County Environmental Health Department Well gtm dls)-and CVRWQCB guideluLes (7'ri- <br /> Reg rtal mar r al ly Control Boged Recommen4dotts.for..Preliminary'Investigations arid. <br /> Evaluation of fUn rground Storage Tanks) samplingitocols. <br /> 3.ba. :Static_Water V.el Me <br /> asprements <br /> Pxior to all mud water purging and sampling, static wster levels in�each.wefi vdlt be measured <br /> using an electricwater level indicator.W'aterlevel daft will..be recorded tothe nearest 0.01 foot from <br /> a.-�e poiat marl don the.top of.each PVC well casing. before and:Aer each use, the <br /> went device will be fin .;with Clean tap water: <br /> 1.0.2. Well Evacuation <br /> %ftequentW t o€depth&700 water and-prier to sampling,each well will be}urged using <br /> a bailer orsub Bible.pump to efture that the s p- is'jrepresentative of the surrounding aquifer <br /> pound<water.T1w welt will`lie.perged ifntW;1}a minimum oft casin' Volumes;is removedfior <br />