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<br /> '° v, ;; ' LO]IS Corpotation WG-1049-01-067
<br /> � � � July 18, 1991 Page 2
<br /> � � � � future additions aze planned, the conclusions and recommendadons contained in this report shall
<br /> H not be considered valid unless 1) the projut changes ue reviewed by Kaldveer Associates and
<br /> � y � z 2) conclusions and recommendations presented in this report aze malified or verified in writing.
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<br /> O N
<br /> 3 c� � II• SITE DFSCRii'i'ION AND INVESTiGATiON
<br /> � � v��.
<br /> Subsurface exploradon was performed using a truck-mounied, 4-inch diameter continuous-flight
<br /> , hollow-stem auger. Eleven (11) explontory borings were drilled on May 7, 1991 and June 13,
<br /> 1991, to a ma�:imum depth of twenty one and one half(21.5) feeL The approximale lceations
<br /> of the borings are shown on the Site Plan, Figure 2. Logs of the borings and details regazding
<br /> the 6eld investigation are inciuded in Appendix A. Our laborarory testing is discussed in
<br /> Appendix B.
<br /> � A. Surfacc
<br /> The site is rectangulaz in shapc, and has maximmn plan dimensions ot approximately L 10 by t70
<br /> ,� feet. It is flat with a maximum elevation difference of less than a foot. At the time of our field
<br /> ! �'� investigation, the site was covered with a six to eight-inch concrete slab (the thickness of the slab
<br /> � was measured from the cored samples). Short grass was growing along the cracl:s. The site is
<br /> bordered to the west by Colby Avenue, ro the east by an a11ey, to lhe north and south by paved
<br /> � �� � pazking areas. Three twenry-five hundred gallon and one five hundred and fifty gallon
<br /> w� underground storage tanks wcre removed from the site on August 15, 1989. The approximate
<br /> ` ]ocations of these tanks is shown on the Site Plan, Figure 2.
<br /> i ���� B. Subsurface
<br /> ' The surface soils encountered in our exploratory borings generally consist of loose and very
<br /> ,.� loose silty sand (fill) which conGtined roots and traces of fibrous peat and undecomposed wood.
<br /> �� � � � This till, which was probably placed on the site during the construction of the surzounding
<br /> development or during the construction of the existing slab-on-gnde, extends ro a depth of about
<br /> � � , six feet. Below this fill dense silry sand, which occasionally contained fin� gravel, was
<br /> �.^ encountered to the maximum depth of exploration which was about twenty-one (21) feet. The
<br /> '' s i l ry s a n d b e c a m e m o r e d e n s e with de pth. Detailed descriptions of the soils encountered in cach
<br /> i of the explorarory borings are presented on ihe boring logs in Appendix A. The passage o f time
<br /> '�. � � could result in changes in the subsurface conditions due to environmental changes.
<br /> �,�I.
<br /> The attached boring logs and related information depict locauon-specific subsur(ace conditions,
<br /> a encountered during our tield investigation. The approximate locations of the borings were
<br /> determined by taping from reference comers (Figure 2) and should be considered accurate only
<br /> ro the degree implied by the method used.
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<br /> yHaldveet Associotes
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