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IN MINOR �- - — e � 4 }s e x v ON Pa I . i . courier delivery to a DHS-certified laboratory for analysis. Standard chain-of-custody procedures will to followed. B.6.5 Blanks In addition to the groundwater samples, a trip blank and a decon- tamination blank will be collected during each sampliriground. A 40-m1 glass VOA bottle with a Teflon septum lid, filled with D1 water at the laboratory, will serve as a trip blank. This trip blank will travel with the sample kit from the laboratory to the facility and back to the laboratory again in the sample con- taining cooler. The blank will be analyzed for the same para- meters as the samples to indicate if the samples have been con- Laminated, from whatever source, during the trip from th the laboratory. a site to A decontamination blank will be prepared inthe field during well rr sampling. After the first well is sampled, DI water will be poured. into the clean, rinsed sampling bailer. that is to be used for sampling the next well. ThisDIwater will then be emptied, f as a sample, into a preserved 40-m1 VOA bottle for analysis with L} thee. samP les:.and trip blank The decontamination blank will indi- cafe if any of the samples are contaminated from the sampling equipment or decontaminationr o: � oc,. s 8.6.6 Sam le Analysis i � i 1 All ;groundwater well samples, the trip blank, and the decon- - r --- ..._... _...-,_... _.. __....... taminatxon blank vrill be analyzed by a DHS-certified laboratory or.. total .. f petroleum hydrocarbons (TPH) by DHS-modified EPA Method 8015 and for the aromatic hydrocarbons benzene, toluene, xylenes, i and ethylbenzene (BTXE) by DHS Method 8020. i ..� e42/71050/7-90/apb B-7 r � i SSE