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ti <br /> and seal septum onto the vial with lid, teflon side <br /> (shiny) toward the sample. shake sample enough to <br /> break it up so that whole sample is immersed in <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. <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 /> G. Label vial with legible information as follows : <br /> 1. Job name or number. <br /> 2. Date. <br /> 3. Time. <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. <br /> T. Wrap up a representative section of the core equiva- <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 <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 and 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 keep 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 /> i <br /> E10 <br /> I]EIEGROUNDWATER <br /> TECHNOLOGY,INC. <br /> CONSULTING GROUNDWATER GEOLOGISTS <br />