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EGE - <br /> but gasoline for toxic. And finally Article 11 , Criteria for <br /> Identification of Hazardous and Extremely Hazardous, Sections <br /> 66696-Toxicity Criteria, 66699-Total Threshold Limit <br /> Concentrations (TTLC) and 66702-ignitability. <br /> SAMPLING PROCEDURES <br /> Prior to sampling the SP-1 soil, communications with Mr. Norman <br /> Riley of the State of California Department of Health Services <br /> Toxic Substance Control Division Alternate Technology suggested <br /> that- four representative samples should be obtained. This _ <br /> frequency of sampling is based upon a waste unit ( a waste unit is <br /> considered any seperate unit be it 70 cu yards or 7000 cu yards) . <br /> Analysis of the soil should include the TTLC for the CAM metals, <br /> Aquatic toxicity test, Total Petroleum Hydrocarbons and BTX&E, <br /> using EPA method 5030, GCFID 8020. A Gastec LEL/02 meter was used <br /> to screen the soil prior to obtaining the four representative soil <br /> samples , inorder to identify if there was a danger of ignition or <br /> explosion from the covered piles, the highest LEL found was 7% <br /> which suggest that there is no risk from ignition or explosion. <br /> Then samples were obtained for the chemical and toxic analysis <br /> from the areas that exhibited the highest reading on the LEL meter <br /> (SP1-A-1A, SP1-A-1B, SP1-A-1C, and SP1-A-1D) , see table 3 for <br /> results and figure 3 for sample locations. <br /> Duplicate samples were obtained and noted as A and B. The A <br /> samples were preserved, chain of custody hand delivered to Eureka <br /> Laboratories , Inc. of Sacramento, California for the 96 hour <br /> Fathead minnow Fish Bioassy-Toxics and TTLC/CAH Metals EPA 6010 <br /> analysis . Eureka Laboratories is a State of California certified <br /> lab (0108 ) . The B samples were preserved, chain of custody hand <br /> delivered to ChemTech Analytical Laboratories of Rancho Cordova, <br /> California for the Total Petroleum Hydrocarbons and BTEX using EPA <br /> method 8020 (GC-FID) and 5030 extraction. ChemTech Analytical <br /> Laboratories is State of California certified lab (#359) , see <br /> Table- 3 for complete results . <br /> TOXICITY AND IGNITABILITY CRITERIA <br /> As stated earlier in PROCEDURES, Article 9 , section 66680 states <br /> that Benzene, Ethylbezene, Toluene and Xylenes need to be tested <br /> for toxic and ignitability and Gasoline only for ignitability. <br /> The following information on each of the above compounds is <br /> furnished in NIOSH POCKET GUIDE TO CHEMICAL HAZARDS. U.S. Dept. of <br /> Health and Human Services and LANGE'S HANDBOOK OF CHEMISTRY. <br /> COMPOUND EXPOSURE IDLH* VAPOR LEL** FLASH <br /> NAME LIMIT LEVEL PRESSURE % IN POINT <br /> (PPM) (PPM) @ 68 F AIR F <br /> Benzene 10 C 75mmHg 1 .3 12 <br /> Ethyl Benzene 100 2000 7mmHg 1 .0 59 <br /> Toluene 100 2000 22mmHg 1 .3 40 <br /> 3 <br />