HomeMy WebLinkAbout2009 CP RESULTS ' r I I I IIII
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SESSIONS
9521 W. Fritz Lane
Bakersfield, CA 93307
(661) 833-9501 Fax (661) 396-0569
License #844326A/HAZ
October 16, 2009
Fast Break Mobil
4800 White Lane #0
Bakersfield, CA 93309
Re: 4800 White Lane #0
Bakersfield, CA 93309
A Cathodic Protection certification test was performed at the above
location on October 7, 2009. Upon arrival at the site a visual
inspection was performed on the anode connections, rectifier and
cathodic protection test leads. The rectifier settings and outputs
were noted and the test was performed using a copper-copper
sulfate reference cell in contact with the earth and a digital
multimeter. The following readings were then obtained:
On (mv) Off (mv)
Tank 1 -1072 -459
Tank 2 -1068 -457
Tank 3 -1067 -451
Tank 4 -1071 -444
The above structure-to-soil potentials were measured with a digital
volt meter connected between the underground storage tank and a
saturated copper-copper sulfate reference electrode in contact with
the earth. The readings were obtained at the tank fills. The copper-
copper sulfate cell was placed in the planter at the southeast corner
of the lot.
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Structure-to-soil potentials measurements for each tank exceed the
recognized NACE International criteria of -850 millivolts and 300
millivolts shift for full cathodic protection.
The Rectifier settings and outputs are as follows:
Volts 49V D.0 Amps 3
Coarse D Fine 3
Hourmeter 8109
Range Volts 49-50V D.C. Amps 3-5
This survey was conducted_ in accordance with the procedures
described in the NACE International Standard Recommended Practice
RP0285-95, Corrosion Control of Underground Storage Tank Systems
by Cathodic Protection and American Petroleum Institute (API)
Recommended Practice 1632, Cathodic Protection of Underground
Petroleum Storage Tanks and Piping Systems
This system is operating as designed and all underground storage
tanks are receiving the required protective current.
Thank you for the opportunity to assist you in this phase of your
corrosion mitigation program. Should you have any questions or
concerns please do not hesitate to contact us at any time.
Respectfully,
Juliana Sessions
Professional Engineer: Robert Paul, P.E.
Address: 2243 Aspen Minor Way, Ste. 204, Laughlin, NV 89029
Signature• @4pFESS►o�,q
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Registered Professional Engineer No. Corrosion 111 e° G� �'�
Expiration Date: 3/31/2010 No. 111
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