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CORROSION MITIGATION SURVEY DATA SHEET <br />COMPANY SunWest Engineering Constructors, Inc. JOB NO. 135 DATE 11/15/05 <br />CLIENT Verizon California <br />JOB LOCATION _ Verizon - Manteca CO, 430 W. Center St., Manteca, CA 95336 <br />ENGINEER Jay M. Shipley, P.E. TECHNICIAN Byran G. Shipley <br />SYSTEM TYPE Sacrificial ANODE TYPE Magnesium NO. OF ANODES 4 <br />SPECIFICATIONS 6.000 gallon diesel DW / COM / D <br />SURVEY DATA <br />TEST LOCATION <br />POTENTIAL CURRENT <br />(mV) (mA) <br />LINE <br />NOTES <br />ON OFF ON OFF <br />NO. SIZE <br />Tank Test <br />-1424 -763 <br />Tank Strap Connected <br />Tank Test <br />-1482 -763 <br />Tank Strap Disconnected <br />Vent <br />-1424 -763 <br />Tank Strap Connected <br />Vent <br />-1482 -763 <br />Tank Strap Disconnected <br />Fuel Supply No. 1 <br />NIA <br />Fuel Supply No. 1 <br />WA <br />Fuel Supply No. 2 <br />N/A <br />Fuel Supply No. 2 <br />WA <br />Fuel Return No. 1 <br />N/A <br />Fuel Return No. 1 <br />N/A <br />Tank Straps & Anchors <br />-1424 -871 <br />Shunt On Tank <br />1.7 <br />Shunt On Vent <br />1.2 <br />Shunt On Anchors <br />1.2 <br />Test Box & Board <br />Hoffman <br />Wire Size & Type <br />No. 8 HMWPE <br />Reference Electrode <br />Unknown <br />Anode Manufacturer <br />Unknown <br />Anode No. 1 <br />-1520* 1.4 <br />Anode No. 2 <br />-1560* 1.3 <br />Anode No. 3 <br />-1545* 1.1 <br />Anode No. 4 <br />-1572* 1.2 <br />Anode No. 5 <br />Anode No. 6 <br />*Anode open / potential test. <br />Product and return pipelines are noncorrosive material. <br />