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NI PORI AdJa....l ..nil.val Gs„uml„�a.ip.istigorn f (.1 Il„rrnl„i 11 I'r`7 P,F..7. hclo%�, fir possible shipment to the laboraton. I'hc soil samples were log��cd according to the t)nificd Soil Classification System. Drilling logs %+'crc prepared containing field observations Including soil type, cstiniated moisture content, presence of staining or odor. and field OVA measurements. At the request of Mr. Rowe of the PHS/El-If), both an OVA-111D (orcanic vapor anal),zer-p}rotoloniz,ition detecter) and :m OVA-1:1€) (organic vapor analyzer-flame ionization detector) were used to screen soil ' samples. The drilling lugs are included in Appendix 1, n1, this report. ' All soil samples collected for lahorator�- analysis were retained, undisturbed, in the brass liners. The liners were sealed at the ends with Teflon tape, capped, %-rapped with duct tape, and I labeled. The samples were stored in a cooler chilled with ice and delivered, under chain-of-custody procedures, to GeoAnal}'tical Laboratories in Modesto. California. The soil cuttings from the borings and steam cleaning effluent were placed in 55-gallon drums, scaled, labeled. and left on site pending laboratory analyses. Disposal of hazardous materials, if any, is the responsibility of the property owner. ' 3.3 Monitor Well Construction The monitor wells were constructed %N ith 2-inch O.D., Schedule 40, flush-threaded, machine- ' slotted PVC screen (slot size 0.020) extending, from a depth of approximately 5 to 15 feet bgs for MVI'-1, approximately 3 feet to 13 feet bgs for MW-2 and MW-3, and approximately 4 feet to 14 feet ' bgs for MW-4. A flush-threaded PVC bottom cap was placed at the bottom of the screen. dank PVC casing Aas installed above the screen to the ground surface. The well casing was steam-cleaned on site prior to use. No glue or solvents were used in the construction of the wells. ' A sand pack of##3 Monterey sand was placed in the annular space to approximately one foot above the screen. Approximately two feet of bentonite pellets were placed above the sand in MW-1 ' and one foot of bentonite pellets in MW-2, MW-3, and MW-4 to form a protective seal. The bentonite was hydrated using potable water. A seal of neat cement was poured in the annulus from the bentonite seal to the ground surface. A locking, traffic box was installed at the ground surface at MW-1 and 114W-4. A locking., stm c-pipe security enclosure extending approximately three ii:ct above 4” Nkiw ;� CONDOR