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COMPLIANCE INFO_PRE 2019
EnvironmentalHealth
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2300 - Underground Storage Tank Program
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PR0503809
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COMPLIANCE INFO_PRE 2019
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Entry Properties
Last modified
9/25/2024 2:08:13 PM
Creation date
11/6/2018 2:03:13 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
2300 - Underground Storage Tank Program
File Section
COMPLIANCE INFO
FileName_PostFix
PRE 2019
RECORD_ID
PR0503809
PE
2381
FACILITY_ID
FA0005982
FACILITY_NAME
MORTON PAINT CO
STREET_NUMBER
38
Direction
W
STREET_NAME
SONORA
STREET_TYPE
ST
City
STOCKTON
Zip
95203
CURRENT_STATUS
02
SITE_LOCATION
38 W SONORA ST
P_LOCATION
01
P_DISTRICT
001
QC Status
Approved
Scanner
SJGOV\rtan
Supplemental fields
FilePath
\MIGRATIONS\S\SONORA\38\PR0503809\COMPLIANCE INFO .PDF
QuestysFileName
COMPLIANCE INFO
QuestysRecordDate
8/21/2017 4:56:57 PM
QuestysRecordID
3595637
QuestysRecordType
12
QuestysStateID
1
Tags
EHD - Public
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*! •* <br /> A Nilsson Sail. Resistivity Meter, Madel 400 is used for direct resistance <br /> moments. The meter incorporates a 97 Hertz generator to eliminate <br /> inb Terence from stray DC or 60 Hertz AC. <br /> IL Potential <br /> Shsu potentials are DC voltages used to evaluate the carrceion <br /> pattern along underground tanks. Properly interpreted and correlated with other <br /> measurements, stru potentials give an indication of the severity of <br /> both galvanic and electrolytic corrosion cells. <br /> Measurements must be recorded with a high input resistance voltmeter. The <br /> negative barminal of the metes is connected to the tank and the positive <br /> terminal to a saturated copper/copper sulfate reference electrode placed in <br /> contact with the smL Copper sulfate half-cells are used for underground <br /> cccrosion testing because they are stable and yield reproducible resLdts. <br /> Cell placement is important when collecting the data.. When best borings are <br /> made, the reference electrode can be placed near the taWsoil interface. <br /> Typically the gest hole is drilled one foot from the edge of the tank to a depth <br /> of two feet below the tank. Tank-to-sail potentials are then recorded at various <br /> depths to establish the potential profile from grade to below the tank. <br /> Structure-to-scil potentials are typically recorded with a Beckman, Model HD <br /> 110. This instrument is designed for corrosion testing and has an internal <br /> resistance of 22 megohms. <br /> III. Stray C ur ent <br /> Stray DC earth currents can emanate from the operation of DC transit systems, <br /> cathodic protection rectifiers, welding and DC motors. When discharged from <br /> the surface of a steel tank, these currents wM consume approximately 1 gram <br /> of metal per ampere-flour. Concentrated electrolytic corrosion can cause rapid <br /> deterioration of underground tanks. <br /> 2 <br />
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