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Fire Station No. 12 TL; A68105.01 March 10, 1995 Page 5 .: . . . .... ; <.. < ;; > > >..< ::>s ..p «;: : ....m .. .. . ,. .... . Type of Aaalys- Prcparatripa Method Analyhcai Method Total Petroleum Hydrocarbons- 5030 . GC/FID2 Gasoline Benzene,Toluene, 5030 80201 Ethylbenzene,Total Xylenes Total Petroleum Hydrocarbons- 33501 GC/FID2 Diesel 5030 = Purge&Trap GC/FID = Gas Chromatography/Flame Ionization Detection 1 United States Environmental Protection Agency,March 1983, Methods for Chemical Analysis of Water and Waste, Second Edition. 2 California State Water Resources Control Board,;February 1988, Gas Chromatography/Flame Ionization Detection, Draft Method for Total Petroleum Hydrocarbons,Hazardous Material Laboratory,Department of Health Services,Reproduced from the Leaking Underground Fuel Tank(LUM Field Manual.. 5.0 Report Twining will prepare a technical report documenting field procedures and presenting findings, evaluations, and conclusions. A site location map, site plan showing soil boring locations, final boring logs, and subsurface cross-sections (if appropriate) will be included. 6.0 SITE SAFETY It is anticipated that Twining personnel will conduct the proposed work in Level D or modified level C protection. The site safety plan is presented in Appendix B. 7.0 LIMITATIONS The proposed work is intended to be an interactive process. Additional work to more fully assess the extent of PPCs in soil is not anticipated but could become necessary. The purpose of a geologic/hydrogeologic study is to reasonably characterize existing site conditions based on the geology/hydroge000gy of the area. In performing such a study, it is understood that a balance must be struck between a reasonable inquiry into the site conditions and an exhaustive analysis of each conceivable environmental characteristic.