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��z��z,cu4.����tr'"a;�i�5.iF.�{.s-kY";r�kr�', r�CYl,�wa?%sF...'�'..�ff•`Y�',p•'���rR?z�+�"",.?:_u�,,R„£y°.�yT+"�"t .+�sa�y x7.ndn..; `�"�4Mt' •—�°,"l:.��at,"�:.:�t1g1',�.s��rb:.:�. e: 3, z�5' Zis� ? 4 <br /> �4Cr" <br /> 1vimP° <br /> • - <br /> �' .. +�.l.vn'.;'m. • <br /> i� <br /> s!J <br /> AGS 87031-2 <br /> SA Station NO- 110 <br /> ,cockton, California <br /> y semi--q.antitative field analysis through use of a Bacharach TLV <br /> UV <br /> sniffer, a Portable organic-gas detection device. Instruments <br /> such as this are useful in providing semi-quantitative <br /> indications of contamination. They cannot be used as an accurate <br /> indicator of -=,ctual levels of contaminants. Readings on the <br /> meter were obtained by inserting the intake probe of the device <br /> into the space between brass sample liners in the sampler <br /> immediately after they were separated. Results of field analyses <br /> are listed can the Boring Logs. Background readings taken on <br /> non-contaminated soil with this device were approximately 80 to <br /> 120 parts per million. <br /> The sample which showed the highest detected levels on the field <br /> instrument in Boring B-1 was selected for analysis (5-30-B1) . <br /> The last sample collected above the ground-water surface in each <br /> boring was also submitted for laboratory analysis. Only the <br /> sample immediately above the ground-water surface in B-2, 5-45- <br /> B2, showed levels above background readings. Thus, only one <br /> sample was analyzed from this boring. <br /> Samples collected for ch .,+ical analysis were removed from the <br /> sampler and immediately sealed in their brass sleeves with <br /> aluminum foil, Plastic caps and airtight tape. They were then <br /> labeled and placed in iced storage. chain of Custody Records <br /> 7 � <br /> L--- App/ied GeoSystems <br />