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Kennedy/Jenks Consultants <br /> • Engineers and Scientists <br /> Maratrtccntln Floor <br /> �Second Street <br /> ^�'� ;i San Francisco,C 9107 <br /> 2150 <br /> ■�/_ l� FAX 415.896.0999 <br /> pUs 2I TA 7 1991 <br /> IRONMEN <br /> F22AUgust 1991 �r,v ���. ael Hi99� lity Control Bard <br /> Regional Water Qa <br /> 3443 RoutierRoad <br /> 95627 <br /> Sacramento, California <br /> Subject: Lincoln Village Center Well <br /> upgrade0 <br /> ien9 nitoring <br /> Dear Mr. Higgins: <br /> nested in your letter of 2 August 1991, Kennedy/Ks Consultants (K/J) <br /> As req proposed to acss your concerns <br /> submits plan. An <br /> this addendum monitorPingswelllis)p lime definiAssessment kupgradient (west) <br /> additional uP9 Lun site. <br /> regarding volatile organic <br /> Center compound <br /> VOC P <br /> of the Lincoln village in Zone <br /> MW16) is proposed to monitor 9rouna0epartmentAof <br /> Monitoring Well C (With approval of the San Joaquin CcDepa tmedan Way <br /> upgradient of LVC. Placa (See Fi►) MW18 will be <br /> Public Works, the well will be located on the north si° <br /> 400 feet west of Gettysburg a hol <br /> apProximately depth <br /> of approximately 70 feet using em auger <br /> method. Soil samples will be ted at 5-foot <br /> drilled to a for EPA Mi01 constituents. <br /> continuous core drilling les will be analyzed <br /> intervals. Selected samples Schet <br /> _ PVC well casing <br /> joints A 0.010-inch slotted well gill be <br /> The well will be constructed with 4 50 to 70 feet below and surface. <br /> with flush threaded j roximately and the borehc be sand packed <br /> installed r the well aPP roximately 'rove the <br /> The annular space between <br /> uivalentlsandsto9aPP elle• <br /> ill be placed <br /> with a Lonestar #3 or minimum <br /> a cement grout sanitary % well will be <br /> perforated zone. followed byfoot thick bentonite cover- <br /> equipped <br /> the sand p cap and a locking <br /> with a water-tightd in <br /> constructed, developed, survelan ?lit <br /> MW18 will be drilled, 11 be <br /> Investigation derived re <br /> accordance with the Phase III Site Assessment Workplan !on Derived <br /> transported and disposed in accordance with the on Derived <br /> stored; <br /> transport Plan (QAPP) All work will be per <br /> stored; Management Plan d Safety <br /> Plan. <br /> nce <br /> Residuals <br /> with the Project Health and Safety well addreoncerns <br /> It is our opinion that the proposed monitoring <br /> in Zone •shes to <br /> lent de ion of the Phase III investigatidforward <br /> regarding upgradient definition of the VO p <br /> expedite the jmP <br />