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Page 7 FE 3082-063-00 <br /> Lot No . 4 : Based upon the results of borings 6 and 8 and <br /> test pit 1 , the subsurface material consists of silty sands <br /> intermixed with large quantities of debris to a depth of about 7 <br /> feet, an elevation of approximately 48 feet. A layer of black , <br /> soft, moist organic material was encountered at a depth of 7 feet. <br /> This lens of black material was about 12 to 18 inches thick . <br /> Be.nea.th this material , loose to medium dense sands and silts <br /> intermixed with a lesser amount of debris was -encountered to a <br /> depth of 16 feet . Photographs 8 and 9 presented in Appendix C <br /> illustrate the conditions encountered in t'e'st pit number 1 . <br /> Below these materials varying layers of loose to medium dense <br /> silty sands exist to the limit, of the boring , approximately 43 <br /> :eet below existing surface elevation. <br /> Lots A and B: Based upon the results of boring 11 and test <br /> pit 7 , the subsurface materials consists of fine to medium sandy <br /> silts intermixed with debris to a depth of 20 feet, an elevation <br /> of approximately 37 feet . This material is loose to dense -as <br /> indicated by modif ied penetration counts of 16 to 98 . This <br /> material is underlain by variable layers of dense to very dense <br /> silty sands , silty clays and sands to the limit of the boring , <br /> approximately 30 feet below existing surface elevation. Astatic <br /> water table was encountered at a depth of 30 feet. Photograph 20 <br /> illustrates the materials encountered in test pit 7 . <br /> The JFounda6on Eng neers, i 1c. <br />