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,C <br /> and seal septum onto the vial with lid, teflon sidei' <br /> (shiny) toward the sample. shake sample enough to 'a <br /> -break it up so that whole sample is immersed in h <br /> methanol.. The rapid progression of steps '!indicated <br /> here is necessary to prevent loss of volatiles from <br /> the soil. Do not leave vials unopened for any <br /> extended period - the methanol evaporates +quickly. { <br /> Grit left on threads of vial can cause vial to break .E <br /> F. * If required ( see 5 below) , Take a duplicate <br /> sample from the other -half directly across from the <br /> first sample, or where' ever undisturbed, yet <br /> representative soil occurs. <br /> i <br /> G. Label vial with legible information as follows : <br /> 1 . Job .name or number. ' <br /> 2 Date. <br /> 3. Time. i� � •. <br /> 4 . Depth and well number. ' <br /> 5. Samplers initials':. <br /> H. Tape vial- across septum with scotch tape and around <br /> cap and sign on the tape with indelible ink to <br /> prevent tampering. °p <br /> I. Wrap. up a representative section of the core equiva- ��;1 <br /> lent in volume to cube: 3 cm on a side in the aluminum <br /> foil square, discarding the rest appropriately. Seal` . <br /> .. in saran wrap. This section is for dry weight `y <br /> determination . Close it in plastic bag with a tag or, <br /> write on the bag" with an indelible marker. These <br /> samples go into a separate cooler or box ind •not with <br /> the vials. The cooler for dry weight samples need <br /> not be iced, but overnight delivery is requested. <br /> J. Discard plastic coring -syringe, clean the :'spatula, <br /> and get clean equipment ready for.,next sample. <br /> K. Ice the 'sample vials immediately and "^keepl;them iced <br /> .through shipment. <br /> L. Fill out chain of custody form. SOP 11 gives major <br /> details. Make sure sample requests is for •proper . <br /> analysis type. ` <br />