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8 <br /> 08-18-00 02:10pm From-TAIT ENVIROMWAL 7145608237 T-405 P.02/05 F-665 <br /> AOL <br /> CORRPRO <br /> August xa, 2000 CO PANIFS INC <br /> CCI 0575-1882 For very Cornar of Your World <br /> ' <br /> �79U 11,IIcr AircLa®Nart 1.candn�,CA 9•1577 <br /> 'It•1;�51u1 6,A•Htia}11 ® lux:(5144)G1}--��11 <br /> 'j AIT KnvirOnment l Systelts 1;.U�7it:c•;rarl;r;,d(r'ad.wlrtt <br /> 701 North Parkeenter Drive <br /> Santa Asia., CA 92705 <br /> �bt4l,tlQn: MT. Alan Throckmof'to;1 <br /> Subject: Catodic Pratedi(lu SYstew Survey <br /> 0A1Ga.11o1U esel Fuel Storage Tan <br /> Pacific Bell Central,Office <br /> Escalon,CA. <br /> Dear Mr. Throck-morton: <br /> August 9 2000 Carr$�ro Campanles, Inc, .Personnet.conducted a cathodic protection (CP) <br /> On � <br /> MCC in <br /> survey ofthe 500-gallon.underground diesel fuel stara,'tank atthe Pei el Bell C cathodicprotection <br /> Escalon, CA. Tlie pul 0 <br /> Tpfl of tl,s~ survey was to <br /> achieved on the underground diesel fuel storage tank. <br /> The cathodic protection system was installed by sloges corporation in April, 1993, <br /> and associated V res connect to <br /> The CP system consists of si�.+�t�)�'�.�-pound magnesium anodes station <br /> the tank shell. The anode,test alto drain lead wiresad cab?n reteonnecte togethin a grade er inside ed ttho test <br /> adjacent to the tank, The asiodc.leads and drain <br /> static,,via a 0.01-ohm shunt,A.nd 41iotlntcd on a test board. <br /> Tests p <br /> crforn,cd on the tank consisted of tank-to-soil potentials and anode current output. <br /> Tank-to-soil p,tential 11Zeasurements were made util inside he test tstation.inicter a Anode current <br /> copper-copper sulfate <br /> reference electrode placed at grade <br /> output measurements were made by measuring the voltage drop across the 0.OI-Ohm Shunt s <br /> inside the test station. Anode:c rrent•QutputS were calgtlalt using Min's Law. <br /> cted, The <br /> Tai*-to-soil potprtials wgte,taker vvitsh anodes ecihatCt$1e :r momentarily <br /> nwith anode discorinemcd <br /> results of the tank-to-soil;'PQL ltl . tests indicate Potentials <br /> National Association of <br /> exceed the —850 millivolt polz►rized potential. criterio set rroaia a control of Underground <br /> Corrosion lIngincers Litcrnatigpal (NTACL]•;Rl'02$ , <br /> q , ..Q <br /> storAgip Wank system by ��Ljlodic. pggtection. . ;A. ,41A. 1nary of this criteria is attached in <br /> ,Appendix.2. <br /> The results of the survey arc pr" nte4 in A pendix <br /> ,. nay <br /> C GOtiwF1.5!JpMaS Jan I L,44111 S ' w 04SS � TOM <br /> Ayu DhRwi lZ�fa,pa ftlaca M1Ww to O* p phos plain <br /> C;mecaa paired ,iahR�'.• ,1.1br:r�1 �..,.., <br /> AQdakW W,hr.dn FM;ai.ourre (K•aVYbtk Plu+an� a 1Y� <br /> Anono�A" oa 04 Ct rorua E ; r' Hong,(ott4' ' 'Lisbon ,MbMw occ'IA oty <br /> n...aw.. frtn,nnu+n, W,�nno,• � tnntiAn <br />