HomeMy WebLinkAboutFINAL ELD T-4 (87 S Line) 8-23-21Exclusive Providers for MDleak® MSleak® DPleak® and
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Page 1 of 6
Test Type:
Facility Name: Job #: 4197
Prepared For: PO #:
Site Address:
City: Primary Test Leak Rate: 0.005 gph
State and Zip: CA 93313 Secondary Test Leak Rate: 0.1 gph
Start Date:End Date:
SYSTEM T1-DSL T2 TK-3 TK-4 TK-5 VR PH to ST PHD-1 PHD-2
Product Primary:PASS
Product Secondary:PASS
Vent Primary:
Vent Secondary:
VR Primary:
VR Secondary:
MDleak ELD Tank:
Turbine Sump:
Turbine Sump Elect:
Turbine Head:
Fill/Vapor Sump:
UDC's:PASS
Fill Bucket Primary:
Vapor Bucket Primary:
Fill Spill Bucket Hydo:
Vapor Bucket Hydro:
Vent Box:
Certifying Field Technician: Ricardo Gonzalez State Lic. # :
Certification Leak Rate: 0.005 gph
Certifying Technician Signature: Date:
Statement Confirmed by: Date: 8/26/2021
This is a statement to confirm that the components listed above,at the time of testing,have been tested to a leak
sensitivity listed above by using one or more of the following DPleak®,MDleak®and PHDleak®EPA aproved Methods.
The DPleak®,MDleak®and PHDleak®Methods are the most versatile and comprehensive testing procedures offered to
the petroleum industry.All petroleum owners and contractors which utilize the DPleak®,MDleak®and PHDleak®Method
can be assured that their facility has passed the Nation's highest standard in preventative leak detection.
I declare under penalty of perjury that I am a licensed tester in one of the above methods listed by the National
Workgroup on Leak Detection Evaluations (NWGLDE)organization and that the information contained in this report is
true and correct to the best of my knowledge.
If you have any questions on the testing please do not hesitate to call. @ 855-255-5325.
Office use only
01-1620
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8/23/2021
Jaco Oil Company
3200 Panama Lane
Bakersfield
8/23/2021 8/23/2021
Howard's Mini Mart
Facility Certification CONFIDENTIAL
California ELD New Construction Test MDleak
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3200 Panama Lane Log of Repaired Leak/s
CONFIDENTIAL
T1-DSL T2 TK-3 TK-4 TK-5 VR PH to ST PHD-1 PHD-2
Tank Volume:
Manufacture:
Interstice:
Depth To Tank:
Tank Dia:
Depth to Fuel:
Tank Sump Boots Turbine
1.5" double trac
free flex
EVR:
Reference #Date Time Status System Component Manufacture
Reference #Date Time Status System Component Manufacture
Log of Unrepaired Leaks
Spill Buckets:
Log of Repaired Leaks
Manufacture
Product Lines:
Vapor Return / Vent:
Flex:
Shear Valve Manufacture:
Containment Boots:
Piping Information
Manufacture:
Manufacture:
UDC/Dispensers Information
Number of Dispensers:
Depth to Ground Water:
Tank Information
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Page 3 of 6
3200 Panama Lane Reference Addendum CONFIDENTIAL
Test Description
The ELD test is a method for evaluating an underground storage tank (UST) system to check for tightness to an
adjustable leak rate of 0.005 gallons per hour or higher. The method involves a multistep process.
Step One: Make sure LDT performed each step or remove. Change all red type back to black when verified.
The first process step is to install soil vapor sampling ports at designated intervals in the backfill surrounding the
underground storage tanks and along associated pipelines. The soil vapor sampling ports allow for the atmosphere
surrounding the tanks and associated piping to be collected. Three general categories of probes are installed. The
deepest probes (tank probes) are installed down to the midpoint of the tank, and spaced on each side of the tank at
approximately 10-foot intervals. Tank top probes also called (ridgeline probes) are spaced 6" away from the tank top
but are placed where any direct buried fitting is known to be connected to the tank top. Surface probes where the
soil vapor is accessed directly below the concrete to sample for direct buried components (i.e. fill spill buckets), and
shallow components such as product and vent lines.
Site Specific Test Events:
The backfill material encountered around the UST’s and piping trench was engineered, pea gravel backfill.
Step Two:
A site evaluation screening (button up) is performed to confirm that the tank top components are tight. A leak in
an exposed fitting could give a false positive subsurface detection therefor all accessible leaks need to be repaired.
The screening of the tank top is performed by inoculating the ullage with a chemical marker that will only reside in
the ullage of the tank or non-liquid components of the UST system. After the accessible leaks have been repaired by
the ullage screening test, the underground test process can proceed.
Site Specific Test Events:
A total of 14 vapor leaks were detected during the button up process.
Step Three:
An inert unique chemical marker, not a component of the petroleum fuel and which will reside both in the liquid
and vapor phase of the UST system is added to each of the underground storage tanks. The inoculated or labeled
fuel and vapor is passed through the entirety of the UST system through normal system operation. If a leak is present
on the UST system, the labeled product leaves the system and enters the surrounding backfill material where it
evaporates. The chemical marker then starts to migrate away from the leak source which can then be collected in
the nearest sampling port.
Site Specific Test Events:
The tanks were inoculated on 3/30/2019. Inoculant chemical Marker A was placed in to the 85 tank, Marker B
was placed into the Diesel tank, and Marker C was used to inoculate the 91 tank.
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3200 Panama Lane Reference Addendum CONFIDENTIAL
Test Description
Step Four:
Soil vapor samples are collected from the soil vapor sampling ports. Soil vapor samples are collected by
connecting adaptor fittings the fixed probe caps in the ground. Vacuum is generated by a sampling pump to extract
minimum 1 pore volume through the sampling equipment before a sample is collected pre-pump. The pump passes
QA prior to performing a sampling event. The samples are analyzed for the presence of the inoculation chemical
marker of each tank. If a detection of the chemical marker inoculant is detected in the soil vapor samples it will
provide information as to size of the leak (gph) and leak location area. The analytical method, data evaluation and
pass-fail criteria, are proprietary and satisfy the testing requirements established by the EPA 3rd party test criteria
used to validate the method. Soil vapor samples were collected and analyzed from all installed probes.
Site Specific Test Events:
Tank 85, 91 and Diesel passed the ELD test on 4/3/2019
Step Five:
To identify the exact location of the leak as well as to confirm the leak, additional soil vapor sampling points will
be installed and the UST system will be inoculated with a different chemical marker to verify the results of the initial
test and to better identify the leak. This last effort is important not only to identify the location but more
importantly if the leak is on the top or bottom half of the tank. Knowing this information is critical for determining
what will be the best method to perform the repair.
Site Specific Test Events:
No additional probes were required to be installed.
Step Six:
The timing of the test is determined by two processes. 1) When the backfill is made of engineered material the
sampling can be performed between 5 and 31 days after the inoculation event. 2) A controlled leak port is added to
the sampling port system which is placed at the midpoint between two or more sampling ports. A controlled leak is
then introduced into the soil vapor space through the controlled leak port utilizing a chemical marker not used to
inoculate the underground storage tanks. The control leak marker is released to determine the sensitivity of the test.
The test timing can be validated by the migration and concentration of the control leak marker. If the tank
excavation area contains backfill material which is different in permeability than clean sand or pea gravel the timing
factors may be adjusted accordingly.
Site Specific Test Events EXAMPLE:
The control leak point process was used to validate the system. The soil vapor migration at the site required 2
control leak point events to validate the sampling event.
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Page 5 of 6
3200 Panama Lane Reference Addendum CONFIDENTIAL
4030 Test Narrative
March 28, 2019. Thursday.
Site setup and evaluation. Perform button tank top activities identify and repair 6 tank top leaks.
Install 21 deep and ridgeline probes around tank. 8 inches of was observed in the 91 turbine sump which was
removed later in the day.
March 29, 2019. Friday.
Continue with tank top button up, identify 7 leaks associated with tank top fittings and pipeline
secondary containment. Pipeline secondary leak scheduled to be repaired on Monday.
March 30, 2019. Saturday.
Collect background samples for tank pit. Run samples. Inoculate tanks with chemical marker.
Release control marker in ridgeline probe.
March 31, 2019. Sunday.
Install 14 short probes at tank and along pipeline. Collect fuel samples from dispenser 1/2. Analyze
fuel samples confirm inoculation of system. Pressurize ullage of Diesel, 91 and 85 tanks. Collect samples and
monitor for the migration of the control leak marker. Identify 1 additional leak 91 fill bucket
April 1, 2019. Monday.
Assist with repair of 87 secondary containment boot on product piping. Identify leaking fitting on 91
fill adaptor. Repair 91 fill adaptor. Prepare and collect samples on piping secondary. Facilitate fuel drop to tanks for
90% capacity fill. Analyze tank pit samples. Inoculate 87 tank with marker A. Release control leak marker in deep
probe.
April 2, 2019. Tuesday.
Collect and run samples for control leak marker. Collect and run fuel samples. Collect and run
samples for control leak marker.
April 3, 2019. Wednesday.
Run samples for inoculation and control leak marker. Perform spill bucket hydrostatic test.
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Page 6 of 6
3200 Panama Lane Reference Addendum CONFIDENTIAL
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