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<br />o~ ~ r \ <br />~v.~" <br />' 2.2.3 Sample Collection and Aandlin~ The field sampling pers/onnel will be <br />' responsible for complete documentation of sampling J which will be <br />kept in the Field Data Collection Sheet, in~ink, for the <br />I preservation of all samples and for maintaining chain-of-custody <br />records for all samples until they are shipped to the laboratory <br />for analysis. <br />2.2.4 Ground Water Samplin¢: It is expected that the condition of the <br />' wells and their ability to yield water may vary from one well to <br />another due to the hydrogeologic properties of the aquifer at any <br />' given location. <br />' It may be necessary, therefore, for the field sampling personnel to <br />modify procedures as sampling progresses so that ground water <br /> samples obtained from monitoring wells are representative of water <br />' quality in the aquifer penetrated by the well. The general <br /> procedures to be used are presented below. Necessary deviations <br />' from these procedures should be fully documented on the Field Data <br /> Collection Form. <br /> <br />I 1 <br /> <br /> <br /> <br /> <br /> <br /> <br />2.2.5 LockinE Wells: Wells will be unlocked immediately prior to <br />initiating sampling procedures. All wells will be re-secured when <br />sampling is completed and at any time the sampling crew leaves the <br />area of the well. <br />2.2.6 Water Levels and Measurements: The diameter, water level and the <br />total depth of each well will be measured to calculate the volume <br />of the water column. Measurements will be made to the neaarest 0.01 <br />foot. Measuring devices used in the well will be cleaned prior to <br />initial use by the following procedure: ~~ <br />(1) rinse with tap water; <br />(2) air dry. <br />-13- <br />~, .' ' f ~ <br />~,~ ~ <br />~ ~,~, ~ <br />5 v' <br />~~,t--.; <br />CI <br />