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PO Box 1928 API 653 SIMILAR SERVICE <br /> POWERS <br /> BECA 94510 <br /> TELL 707 707 334 3400 KIRK PETROLEUM TRACY,CA <br /> FAx 707 926 2684 <br /> ENGINEERING&INSPECTION,INC www.powersei.com Tank 2 (Candidate Tank) <br /> SIMILAR SERVICE ASSESSMENT-DATASHEET-BOTTOM SOIL-SIDE <br /> CONTROLTANKID: Tank LOCATION: TRACY,CA <br /> DIAMETER(FT): 24 HEIGHT(FT): 24 CAPACITY(BBLS): 1,934 <br /> CANDIDATE TANK ID: Tank LOCATION: TRACY,CA <br /> DIAMETER(FT): 24 HEIGHT(FT): 24 CAPACITY(BBLS): 1,934 <br /> SECTION 2-TANK BOTTOM(SOIL-SIDE)ASSESSMENT <br /> H.2.1 TANK CHARACTERISTICS MATCH(3) IF NO SEE <br /> CONTROLTANK(1) CANDIDATETANK(2) YES NO SEC.(4) <br /> a) YEARTANKERECTED 1991 1991 0 ❑ H.2.1.1 <br /> b) BOTTOM MATERIAL 5/16-in A36 5/16-in A36 r❑ ❑ H2.1.2 <br /> c) CORROSION ALLOWANCE 0 0 0 ❑ H.2.1.4 <br /> d) DOUBLE BOTTOM NO NO r❑ ❑ H.2.1.7 <br /> H.2.1 SOIL/MATERIAL IN CONTACT WITH ORAROUND BOTTOM PLATE(5) MATCH(3) IF NO SEE <br /> CONTROLTANK(1) CANDIDATETANK(2) YES NO SEC.(4) <br /> a) SOILTYPE CONCRETE CONCRETE ❑ H.2.1.8 <br /> b) SOILpH N/A N/A 0 ❑ H.2.1.8 <br /> c) SOILALKALINITY N/A N/A 21 ❑ H.2.1.8 <br /> d) SOIL MOISTURE N/A N/A r❑ ❑ H.2.1.8 <br /> e) SOILSALINITY N/A N/A r❑ ❑ H.2.1.8 <br /> f) SOIL CONDUCTIVITY N/A N/A 0 ❑ H.2.1.8 <br /> g) OILTYPE(IF OIL SAND FOUNDATION) N/A N/A 0 ❑ H.2.1.8 <br /> h) SOILCLEANLINESS N/A N/A r❑ ❑ H.2.1.8 <br /> H.2.3 CURRENT OPERATING CONDITIONS MATCH(3) IF NO SEE <br /> CONTROLTANK(1) CANDIDATETANK(2) YES NO SEC.(4) <br /> a) NORMAL OPERATING TEMP. AMBIENT AMBIENT r❑ ❑ H.2.1.10 <br /> b) CATHODIC PROTECTION(5) YES YES r❑ ❑ H.2.1.6 <br /> c) PONDING/WATER YES YES 0 ❑ H.2.1.8 <br /> H.2.4 PREVIOUS OPERATING CONDITIONS MATCH(3) IF NO SEE <br /> CONTROLTANK(1) CANDIDATETANK(2) YES NO SEC.(4) <br /> a) NORMAL OPERATING TEMP. SAME SAME 0 ❑ H.2.1.10 <br /> b) CATHODIC PROTECTION(5) SAME SAME r❑ ❑ H.2.1.6 <br /> c) PONDING/WATER SAME SAME r❑ ❑ H.2.1.8 <br /> H.2.5 CONCLUSIONS <br /> a) Does this assessment inculde additional assessment documentation(see H.2.1) ❑YES 0 No <br /> b) Based on the criteria reviewed in this similar service evaluation,similar service <br /> is❑�OR is NOT Riecommended for this tank(check appropriate box) <br /> c) The corrosion rate to be applied to the soil side of the tank bottom is: 0.00065 i n/yr <br /> d) The corrosion rate to be applied to the soil side of the tank bottom annular plate is: 0.00065 i n/Yr <br /> COMMENTS: <br /> NOTE THE DATASHEET SHALL BE MAINTAINED IN THE RECORD FILE AS PER 6.8 <br /> ASSESSED BY: Jade C.Geronimo/Gary Powers DATE: 6/3/2019 <br /> APPROVED BY: DATE: <br /> (tank a wner/operator) <br /> NOTE(1)The control tank is the tank for which service conditions and corrosion rates are well known. <br /> NOTE(2)The candidate tank is the tank to be compared to the control tank to determine if similar service concepts apply. <br /> NOTE(3)"Y"or"yes"indicates that the candidate tank criterion essentially matches the control tank. <br /> NOTE(4)If the candidate tank criterion does not match the control tank criterion,see H.2.1. <br /> NOTE(5)See API 651,Section 5.3 <br /> API 653 SIMILAR SERVICE YELLOW FREIGHT TANK 2 TRACY,CA 2019.DOCX Page 19 of 21 Date Printed:614119 9:53 AM <br /> ©2017 PE&I Inc. <br />