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FIGURE 4. TYI-IU'AL SUBSURFACE GEOLOGY ANL, WELL CONSTRUCTION <br /> NAVY DRIVE SITE <br /> Date: May 20, 1986 Elevation. +2. 78 <br /> WELL DESIGN <br /> DEPTH � w oa J PEKE. <br /> IN = r_ 0 = RESIS. DESCRIPTION 03 SAND <br /> FEET (f oLn / FT. 0. 020 SLOT <br /> 0Exi3ting Ground Surface <br /> \.ti.�.ti. �•\.1• ti.ti.1.1 <br /> �.ti.,.,. Asphalt(3" ) with damp, silty sandy ;.,.,• ;.,.,., <br /> gravelly- base fill material . <br /> 23- 1 <br /> ;.,.,. <br /> FE, Dark grey to black, moist, stiff, medium ����*� ���'•��� <br /> 3 to high plastic, silty clay(CL ). - <br /> 4 Clays becoming green-brown in color <br /> 5 - <br /> 6 3-2 :,-:,•:, 25 Light brown, moist, loose to medium- _ <br /> dense silty sand(SM ) with minor <br /> 7 i::i::i::i;:i amounts of clay binder. Iron oxide - <br /> !-j-.:i-.:i-.:i stains are present. <br /> I •I •1 •I -1 _ <br /> 9 <br /> I•:I•:I•:1':I' <br /> 10 - 10 <br /> 3-3 ' '! 11 Some material but is wet and loose <br /> - <br /> i••:i•:i•:i-:i <br /> 12 - <br /> I :1•:1•:1•:I- <br /> 13 ':i':i' <br /> 14 - <br /> SZ Grey-green, saturated, stiff, plastic <br /> 15 silty clay(CL ). 15 <br /> 16 3-4 16 - <br /> 17 becoming less plastic and less stiff <br /> 18 - <br /> 19 11 <br /> 3-5 <br /> — 20 -- 20-- <br /> 21 <br /> 0-21 Boring terminated at 20 feet - <br /> — 22 - <br /> - 23 - <br /> - 24 <br /> 2 23 24 - <br /> 25 25- <br /> 26 - <br /> — 27 — <br /> Figure <br /> 7 Figure - Test Boring Log No. LB-3 <br /> - Monitoring Well No . MW-3 Woodward-Clyde Consult8l <br />