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® Sampling And Analytical' Protocol <br />i <br />The following protocols have been developed to increase the accuracy and comparability <br />groundwater monitoring data. The purposesofestablishingP tc is the <br />� following. tilt field protocols are . <br />(I) to reduce sources of error that can be introduced during -sa <br />in a consistent manner so that data $ d, (2) to collect samples <br />comparability .and ace " couaparable' Therefvrre, project goals for <br />uracy include follo the procedures described int this <br />Went Possible. When field conditions necessitate a chane fiom -the mon to the <br />g 'established protocols, the <br />necessarY changes will be implemented with maintenance of <br />comparability as priorities. Any modification to the sampling ��� and data set <br />Protocol n � procedures delineated- is this <br />P necessitated by field conditions and the reasons -wilt be noted on the Technici;Ws Daily <br />Report (See Section 2.7).. ` <br />Depth To Water Measurements <br />Depth to water measurements will be made in all'the wells at the site prior to initiating purgg <br />and Sampling. including. wells that are not to be sample& .The measurements will be made for <br />times a Y=r prior to initiating each, sampling round ?here are no <br />depth to water measurements win be made cA c Piczometersat the site: The -- <br />' Iy, in'as short a time as possible, fo reciucc <br />Potential errors due to daily variations in the water table, <br />DeP1h4 water (DIW) will be measured -in the well to within in 00 of a foot using a <br />conductivity -based water level indicator.- M eats will be taken from the north or marked <br />side of the top of casing of each well. These maex3 on the casinp <br />ncaa sea level have been Surveyed by a <br />licensed surveyrciative to x <br />)- wells with dcdicxted pumps, the water Level <br />probe is inserted into the well through a spacial hole in the well <br />cable will be ca The conductiviip probe and <br />rinsed in deionized water before M`== g the forst well, and sfrer each <br />subsequent well. Tbc same water level indicator be used in each, well. Depth to water <br />.mcasureM=t will be recorded on a field observation.shect, <br />Monitoring Wen Purging Prior To Sampling <br />Groundwater.samples will be. collected from existing monitoring wells at Forward Lando <br />Purging the water standing in thewelL 11is water will be After <br />puzged Lising either dedicated pumps <br />1Purgepump Ii .f decontaminated i /e.; / vmX The following proced= will <br />be used to <br />+ I <br />the WatCrstanding 1. the wellprior isampling It <br />23453849-F0iU3IOR325. A-6 <br />cope 4* 20M Xikmdr. iw J* 14, 2MO <br />