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Sampling Acid AnWydcal-Protocol <br /> The following protocols have been developed to int j <br /> Ptease the accuracy and compambin .of the <br /> groundwater monitoring data. The purposes of establishing and following.the fie d <br /> •(1) to reduce sources of error that can be introduced duria protocols are <br /> g sampling and, (�) to-collect.samples <br /> in a consistent manner so that data sets are'comparable. Therefore <br /> coni arabili _. p%! oats <br /> F ty .and aacutacy include following the Ptncedures de�x'bed inthis section to for <br /> =tent-possible. When field conditionsnecessitate a change from 4he the <br /> necessary changes will be implemented with maintenance of Sampling--established protocols, the <br /> :accuracy and ,data set <br /> cOmParability as priorities. Any modification to. the staadard <br /> pocdurdeinataProtocol necessitaied in this conditions <br /> and the-rcasons-will be noted on the Technicians Dail <br /> Report(See Section 2.7).. Y <br /> Depth To water Mewuret ents <br /> Depth to water Measurements will be made in all'the wells at the site prior to inW <br /> ating and�Plmg,including.wells that.arc not to be sampled. .Thc be m Pig <br /> m�menLs� �Dania fort <br /> times a Yom-prior to initiating each sampling round. There are noi <br /> P aometets-at the site: The. : <br /> depth to water ntents will be made consautivcly,inns short a time as <br /> Po�tW errors doze t possibI�to reduce.: <br /> o daily variations in the water table. <br /> Dcpth-to-water (DTW) will be mead .in the well to within 11I 00 of a foo <br /> using <br /> canductivity-based water level indicator.' M�czrts will be t a <br /> taken from the north or raarked <br /> stele of the top of eastng of each well. These narks on tEtccasinp = <br /> iicenscd surveyxciati c to ni,c�an sea level have been <br /> surveyed by a <br /> (M$I.}. to wells with dcxlics:tcd ,the water level <br /> probe is inserted into the welt through a Vecial Rola in the well <br /> - cap. The candud'zvity probe and <br /> cable-will be <br /> rinsed in deionized water before and after measuring the first-well,and after each <br /> subsequcnt well. The same water level iudicaty,r will be used in each welL Depth to water <br /> me`asure ,=t will be recorded on a feld obscrvatlonsheet. <br /> MoniWr ng Well Ppm&g fetor To Sampting <br /> amundvwater-sampies will be collected from existing monitoring wells at Forward Laadittl,aftcr <br /> Pig the water standing in the well. This waxer Will be purged using either ci�dicated pumps <br /> ar'a spe CW Pur9C PUMP that is decontaminated between=h ftj The following procedure will <br /> be used to purge the water,swxft in the wen prior to sampling the wells: <br /> 13-4U94SL-FO I U3101t32S. A-b <br /> CapyrWA zona xtkWda.in'- My 14,2000 <br />