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CLEARWATER G R O U P, I N C ' the following manner • SW-1 was step-tested at applied pressures of 5, 9, and 12 pounds per square inch (psi) for periods of approximately 45 minutes, 60 minutes, and 30 minutes, respectively ' • SW-2 was tested at applied pressures of 9 psi and 12 psi for periods of approximately 60 minutes and 75 minutes, respectively • Flow volume was monitored during each step test and recorded in ACFM • Induced pressure was measured (m inches water) at intervals of 5 to 15 minutes in MW-4, MW-5, MW-6, VW-1, and VW-2 • During the SW-1 test at an applied pressure of 12 psi, air samples were collected from VW-1 and MW-2 and monitored for hydrocarbon vapors using the LEL meter and the PID • During the SW-2 test at an applied pressure of 12 psi, water levels, dissolved oxygen, and organic vapors were measured in all other wells s At the end of the 12 psi step test in SW-1 and SW-2, air samples were collected from ,VW-1 and VW-2, respectively, each sample was submitted to the laboratory for analysis of BTEX and TPHg I I I I I 3.0 RESULTS ' F I 3.1 Subsurface Materials II f 5 The subsurface sediments encountered during recent (drilling activities correlate fairly well with boring logs generated during previous phases of work. The ' following is a generalized description of subsurface strata to a depth of approximately 47 feet Silt and lean clay are,present to a depths of approximately 20 Ito 25 feet I , IIF � I I I !• Sandier deposits (sand and silty sand) are present from the base of Ithel silt and II I I ' I cI lato;a de{pthI olf, approximately `p!`11I pI roIx1rl1 iat!e) 40ett bgIyI' I V! ` I If i I I� I IIIIIr4,{ � 111 II I II. r1 � I ��, I ! I Il�gll�, I illi I I' rl Ik � I I�I I I I � 1 1 � I , I Dloll PAR/34/PILOT tt pp� !I`' 8 ,II!I141II lrl11 Ilf4I+ ,,I,I hI11,!�' VI'I IIr' I i �,!I 'I I