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• were taken as an aid to define any deep peiietrat3-on of <br /> contaminates and their direction of migration While <br /> excavating in the southeast corner, where the cesspool was <br /> located, two deeper layers of flat rocks were found, at <br /> about 16' and 19' bgl , also a discarded kettle of about one <br /> gallon size One conjecture would be that the cesspool had <br /> been deeper and was back-filled in stages , although the <br /> brick wall stopped at about 8 ' bgl Owing to this finding, a <br /> 20' sample was taken from this corner (#9 ) <br /> All soil samples were taken by DRA, using sterile brass <br /> tubes , aluminum f l on the ends with plastic caps and duct <br /> tape for sealin The samples were placed in an ice chest <br /> with a measured 4 degree F temperature C 0 C forms for <br /> all samples are ttached The samples were taken from the <br /> back hoe bucket at the surface Careful attention was given <br /> to make sure the soil was taken from where noted All <br /> samples were taken by hand-driving the brass tubes into the <br /> soil No composite samples were taken <br /> WJH has photographs of the excavation walls , available for <br /> examination, which show the demarcation between the two sand <br /> entities and the iron staining <br /> SPOIL HANDLING AND SAMPLING <br /> Spoil from the excavation was continuously removed to a <br /> temporary storage location at the west end of the garage and <br /> storehouse buildings The ground was covered with plastic <br /> sheeting by JTO and the spoil placed on top Two spoil <br /> piles were formed as shown on Figure 7 R. Thorpe and DRA <br /> sampled the spoil piles prior to covering with plastic All <br /> sampling techniques noted above were used The spoil piles <br /> were then covered with black plastic sheeting and anchored <br /> in place by weighing the edges with clean soil <br /> TEST RESULTS <br /> The results of laboratory analyzes of soil samples from the <br /> excavation and the spoil piles are summarized in Table A <br /> The results of water analyzes from the two domestic wells <br /> are listed on Table B Copies of the laboratory reports , <br /> chain of custodys , and QA/QC are included as attachment 3 at <br /> the end of this report <br /> DISCUSSION OF TEST RESULTS <br /> The results of the laboratory analyses of soil samples from <br /> the excavation and spoil piles have been added to Figure 7 , <br /> (relabeled Figure 7A, ) to facilitate evaluation The <br /> 6 <br />