Laserfiche WebLink
f <br /> Surface-6": Sandy loam. <br /> 6"--6': Brownish-black clayey loam, fairly dry, firm, grading <br /> to brownish-gray towards the east end of the pit. <br /> 6'-bottom: Sandy, clayey silts, buff to tan, with occassional pods <br /> and irregular shaped inclusions of brownish clay. <br /> No continous, uniform beds were noted, and the sediments were firm <br /> and well compacted; there was no evidence of slumping or caving. <br /> Refer to Plate XI for photos of the excavation. <br /> The SJLHD representative, Mr. Knoll , arrived at approximately <br /> 1:00PM, and after some discussion, it was agreed to take a total of <br /> 7 samples--2 from the bottom, and 5 sidewal,ls_ Refer to Plates IX & <br /> X for the approximate location of the samples. <br /> A Thorpe Oil Co. employee was lowered to the bottom of the <br /> excavation in the backhoe bucket. Using properly cleaned and sealed <br /> brass tubes supplied by FEL Environmental personal, he took two <br /> samples at each of the locations indicated by Mr. Knoll & Mr. <br /> Hunter. The samples were quickly returned to the surface, properly <br /> sealed, labeled, and refrigerated. They were transported to the <br /> laboratory under Chain--of-Custody; (refer to Exhibit H. ) A faint <br /> gasolone odor was noted in some of the samples, but no free product <br /> was observed. <br /> Composite samples were also taken by F•GL Environmental from the <br /> spoil , to assist in evaluating remediation techniques if needed. <br /> See Plate III for the results of that analysis. The excavation was <br /> securely fenced and the spoil was covered with plastic. <br /> RESULTS OF SAMFLE ANALYSIS <br /> The results of the laboratory anlyais performed on the above samples <br /> from the excavation are tabulated on Table II. The analysis <br /> revealed that the 3 sidewall samples on the northeast, east, and <br /> southeast side of the pit were clean. Very small amounts of BTX&E <br /> were measured in the two bottom samples; TPH-G was detected in only <br /> one sample, ( SW--2W. ) !Neither Ethylene bibromide nor organic lead <br /> were detected at reporting limits in any of the samples. <br /> However, samples No. SW-2W & SW-3W, (refer to Plates IX & X,) <br /> indicate that contamination has not been removed in that area, and <br /> will require further cleanup. <br /> Although the composite samples of the spoil taken on 1/19/90 showed <br /> detectable levels of BTX&E and TPH-G, ED9 was below the reporting <br /> limit of .010 mg/kg. The test for lead was not run. The composite <br /> samples taken from the spoil at the conclusion of the excavation <br /> 4 <br />