HomeMy WebLinkAboutTANK INTEGRITY 2017
SERVICE SHOP USED OIL / ANTI-FREEZE TANKS
SYSTEM INTEGRITY REPORT
FOR
CARMAX FACILITY
BAKERSFIELD, CA
APRIL 5, 2017
Prepared by:
HMT Inspection
A Division of HMT LLC
250 W. Channel Rd., Suite H
Benicia, CA 94510-1159
707.747.0444
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
INTRODUCTION
HMT Inspection, a division of HMT LLC, was subcontracted by Tait Environmental, to
provide on-site inspection services at the CarMax Facility in Bakersfield, California for
evaluating compliance for used oil tanks identified as:
Used Oil Tank and associated piping outside the Service Shop.
Used Anti-Freeze Tank and associated piping outside the Service Shop.
This report documents the findings of the examinations and assessment performed on
April 5, 2017 regarding these tanks / system.
It should be noted that the term “tank” is used herein as defined in the California Code of
Regulations for aboveground storage tanks (ASTs).
HMT Inspection provided the following personnel:
Nelson Acosta
API 653 Certified Tank Inspector
Certification Number: 0272
California Registered Professional Engineer
No. C57820 (Civil)
STI Certification Number: AC 14408
David Udosen
API 653 Certified Tank Inspector
Certification Number: 36010
STI Certified Tank Inspector
Certification Number: AC 12181
Level II Technician
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
TABLE OF CONTENTS
1.0 DESCRIPTION ....................................................................................................................... 5
2.0 SIGNIFICANT FINDINGS ...................................................................................................... 7
3.0 EVALUATION FOR CCR COMPLIANCE – USED / WASTE OIL STORAGE TANK ............ 11
3.1 CONTAINMENT AREA ASSESSMENT AND EVALUATION .................................. 15
3.2 PIPING AREA ASSESSMENT AND EVALUATION ................................................. 16
4.0 DRAWINGS ........................................................................................................................... 18
4.1 USED OIL TANK LAYOUT ....................................................................................... 18
4.2 ANTI-FREEZE TANK LAYOUT ................................................................................ 19
5.0 NDE INSPECTION ................................................................................................................. 20
5.1 NDE INSPECTION SCOPE ...................................................................................... 20
6.0 EQUIPMENT .......................................................................................................................... 21
6.1 ULTRASONIC ........................................................................................................... 21
7.0 TABLES ................................................................................................................................. 22
TABLE A SHELL READINGS ......................................................................................... 22
TABLE C SHELL READINGS ......................................................................................... 24
8.0 WARRANTY ........................................................................................................................... 26
9.0 PHOTOGRAPHS ................................................................................................................... 27
10.0 CERTIFICATIONS ............................................................................................................... 48
Used Oil Tank / Containment Integrity Report
For
CarMax
Bakersfield, CA
HMT Inspection
April 5, 2017
Page 5 of 53
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
1.0 DESCRIPTION
GENERAL:
TANK IDENTIFICATION: Used Oil Tank (10GA)
OWNER: CarMax
DESIGN STANDARD: UL 142
TANK LOCATION: Bakersfield, CA
MANUFACTURER: Highland Tank
TANK CONSTRUCTION: Double-Wall Tank (Carbon Steel)
TANK THICKNESS: 0.187 inch (nominal)
CONNECTING PIPING: Carbon Steel
PRODUCT: Used Oil
TANK EMPTY AT
INSPECTION:
No
HYDROSTATIC TEST: No Data Available
DATA PLATE PRESENT: Yes (Name Tag only)
DIMENSIONS:
HEIGHT: 5.00 ft. (Containment Tank)
LENGTH: 10.92 ft. (Containment Tank)
WIDTH: 2.71 ft. (Containment Tank)
CAPACITY GROSS: 1,000 gals.
GEOMETRY:
FOUNDATION: Steel Channel Supports (3) on
Concrete Base
SHELL: Single Plate (Fillet Welded at
Edges)
TOP OF TANK: Single Plate (Fillet Welded at
Edges)
DATES:
YEAR BUILT: No Data Available (Installed =
2012)
LAST COATED: No Data Available
LAST INSPECTION: No Data Available
ACCESS:
STAIRWAY: N/A
COATINGS:
SHELL: External - Blue Paint
Used Oil Tank / Containment Integrity Report
For
CarMax
Bakersfield, CA
HMT Inspection
April 5, 2017
Page 6 of 53
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
DESCRIPTION (CONT’D.)
GENERAL:
TANK IDENTIFICATION: Used Anti-Freeze Tank (12GA)
OWNER: CarMax
DESIGN STANDARD: UL 142
TANK LOCATION: Bakersfield, CA
MANUFACTURER: Highland Tank
TANK CONSTRUCTION: Double-Wall Tank (Carbon Steel)
TANK THICKNESS: 0.187 inch (nominal)
CONNECTING PIPING: Carbon Steel
PRODUCT: Used Anti-Freeze
TANK EMPTY AT
INSPECTION:
No
HYDROSTATIC TEST: No Data Available
DATA PLATE PRESENT: Yes
DIMENSIONS:
HEIGHT: 2.92 ft. (Containment Tank)
LENGTH: 5.20 ft. (Containment Tank)
WIDTH: 2.17 ft. (Containment Tank)
CAPACITY GROSS: 280 gals.
GEOMETRY:
FOUNDATION: Steel Channel Supports (2) on
Concrete Base
SHELL: Single Plate (Fillet Welded at
Edges)
TOP OF TANK: Single Plate (Fillet Welded at
Edges)
DATES:
YEAR BUILT: No Data Available (Installed =
2012)
LAST COATED: No Data Available
LAST INSPECTION: No Data Available
ACCESS:
STAIRWAY: N/A
COATINGS:
SHELL: External - Blue Paint
Used Oil Tank / Containment Integrity Report
For
CarMax
Bakersfield, CA
HMT Inspection
April 5, 2017
Page 7 of 53
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
2.0 SIGNIFICANT FINDINGS
The following is a summary of the significant findings of the inspection.
History:
This is the first inspection performed at the CarMax facility located in Bakersfield, CA on
the Used Oil and Anti-Freeze Tanks by HMT Inspection. The Used Oil and Anti-Freeze
Tanks are carbon steel tanks constructed to UL 142 design standard by Highland Tank.
The tanks were installed new and have been in service at this location since the facility
was built and started operation in March 2012 (per client).
Tank as identified below:
Configuration and nominal capacity for the Aboveground Storage Tanks (ASTs):
Used Oil Tank: 1,000 Gallons
Used Anti-Freeze Tank: 280 Gallons
Inspection of the Aboveground Outside Bulk Storage Tanks revealed no areas of defects
or anomalies that would require immediate corrective action at this time or that should be
addressed for future maintenance during the next service cycle. Reference Section 3.0
for the identification, diagram and area layouts of the tanks, piping and containment
details inspected.
Aboveground Outside Bulk Storage Tank Facility
FOUNDATION: The Used Oil and Used Anti-Freeze Tanks sit outside the service shop
in a large concrete containment and are both individually supported on steel structural
supports resting on the concrete base. Visual (VT) inspection of the steel supports found
them in acceptable condition at this time. The supports are bolted to the concrete with
random areas of minor coating failure and light rust present. These details should be
monitored for signs of worsening conditions in the future.
Visual (VT) inspection of the concrete containment and foundation found it in acceptable
condition at this time. The concrete containment detail has construction joints with
random areas of hairline cracks present. Consideration should be given to coating the
concrete containment to minimize future deterioration. The concrete containment
foundation measures 17.67 ft. long x 14 ft. wide x 13 inches high. There are three (3)
tanks present inside this containment, two (2) 1,000 gallon tanks and one (1) 280 gallon
tank. The containment is large enough to contain the volume of the largest tank inside
the area in case the tank were to fail. The containment has a drain port present with
valve. The valve is locked shut at this time. It should be noted that there is debris
present inside the containment and collecting around the drain port. Consideration
should be given to cleaning this area at this time.
Used Oil Tank / Containment Integrity Report
For
CarMax
Bakersfield, CA
HMT Inspection
April 5, 2017
Page 8 of 53
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
SIGNIFICANT FINDINGS (CONT’D.)
Aboveground Outside Bulk Storage Tank Facility (CONT’D.)
USED OIL TANK: The Used Oil Storage Tank is a double-wall horizontal rectangular
tank resting on three (3) steel structural supports that are bolted to the concrete floor
outside the service shop. The tank has a capacity of 1,000 gallons (nominal).
Used oil is manually transferred to the tank by service personnel using a collection pan
and also transferred via approximately 420 feet of 1-inch carbon steel piping from the
used oil collection drums (3 collection stations) inside the service shop to the nozzle inlet
on top of the tank. Used oil is pumped out from a collection drum through1-inch
connecting piping. The filter press machine also drains into the collection drum that is
pumped out to the used oil tank. The piping runs along the shop walls from the three (3)
collection stations and overhead on the rafters and down through the wall to the tank
entry point. The carbon steel piping measures 0.132 inch to 0.134 inch wall thickness.
This connecting piping is 1-inch Sch. 40 with nominal thickness of 0.133 inch.
The used oil is collected and then subsequently trucked off-site for disposal or recycling.
A monthly or bi-weekly pick-up and service log is available and accessible at the tank.
The thickness readings on the primary tank shell measured from 0.176 inch to 0.182
inch (nominal thickness is 0.187 inch). The thickness readings on the secondary tank
shell measured from 0.128 inch to 0.130 inch (nominal thickness is 0.125 inch).
Visual (VT) inspection and Ultrasonic (UT) testing found the tank in serviceable
condition. The shell coating is in acceptable condition at this time.
USED ANTI-FREEZE TANK: The Used Anti-Freeze Storage Tank is a double-wall
horizontal rectangular tank resting on two (2) steel structural supports that are bolted to
the concrete floor outside the service shop. The tank has a capacity of 280 gallons
(nominal).
Used Anti-Freeze is manually transferred to the tank by service personnel using a
collection pan. There is no transfer piping or hose connected to the tank. It should be
noted that due to low frequency of use, the tank fill / pick-up interval for disposal or
recycling is longer than for the Used Oil Tank.
The used anti-freeze is collected and subsequently trucked off-site for disposal or
recycling. A quarterly pick-up and service log is available and accessible at the tank.
The thickness readings on the primary tank shell measured from 0.176 inch to 0.180
inch (nominal thickness is 0.187 inch). The thickness readings on the secondary tank
shell measured from 0.119 inch to 0.122 inch (nominal thickness is 0.093 inch).
Used Oil Tank / Containment Integrity Report
For
CarMax
Bakersfield, CA
HMT Inspection
April 5, 2017
Page 9 of 53
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
SIGNIFICANT FINDINGS (CONT’D.)
Aboveground Outside Bulk Storage Tank Facility (CONT’D.)
USED ANTI-FREEZE TANK (CONT’D.): Visual (VT) inspection and Ultrasonic (UT)
testing found the tank in serviceable condition. The coating is weathered and beginning
to fail with slight surface rust in random areas. Consideration should be given to
maintaining the coating as necessary. It should be noted that personnel are present
during tank product fill / withdrawal operations.
Aboveground Outside Bulk Storage Tank Facility
SECONDARY CONTAINMENT EVALUATION (Bulk Storage Tank Facility):
USED OIL TANK: The Used Oil Tank is a double-wall horizontal rectangular tank.
Since the tank is double-wall, the need for separate spill capacity around the tank does
not apply. These details meet the requirements for secondary containment per EPA
regulations for the maximum 72-hour clean-up period for spills.
Since the Bulk Storage Tank rests inside its own Secondary Containment Structure, it is
not subject to rainfall or other runoff accumulation per the EPA 25-year, 24-hour
maximum rainfall / runoff accumulation requirement for the containment area. The
Secondary Containment Structure is suitably large enough to contain the volume of the
tank within (1,000 gallons in this case).
USED ANTI-FREEZE TANK: The Used Anti-Freeze Tank is a horizontal rectangular
double-wall tank. Since the tank is double-wall, the need for separate spill capacity
around the tank does not apply. These details meet the requirements for secondary
containment per EPA regulations for the maximum 72-hour clean-up period for spills.
Since the Bulk Storage Tank rests inside its own Secondary Containment Structure, it is
not subject to rainfall or other runoff accumulation per the EPA 25-year, 24-hour
maximum rainfall / runoff accumulation requirement for the containment area. The
Secondary Containment Structure is suitably large enough to contain the volume of the
tank within (280 gallons in this case).
INTERSTITIAL SPACE: The Used Oil / Anti-Freeze Tanks are each double-wall with an
interstitial space for monitoring leaks. Also, there is adequate venting present for the
secondary space. The primary tanks have atmospheric and emergency vents present. At
this time the interstitial space could not be tested for the presence of hydrocarbon vapor
with a gas monitor. It should be noted that each interstitial space has a detection device
present to monitor for leaks. The leak detection device on the used Anti-Freeze tank is
damaged and should be replaced at this time.
Used Oil Tank / Containment Integrity Report
For
CarMax
Bakersfield, CA
HMT Inspection
April 5, 2017
Page 10 of 53
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
SIGNIFICANT FINDINGS (CONT’D.)
TRANSFER PIPING EVALUATION: Used oil is pumped from the collection drum and
oil filter press machine at three (3) locations inside the Service Shop and transferred via
460 feet of 1-inch carbon steel piping along the shop wall, overhead on the rafters and
through the wall and to the tank (ref. photos). Ultrasonic (UT) testing of the piping in
accessible areas measured the thickness from 0.132 inch to 0.134 inch. The carbon
steel piping is 1-inch Sch. 40 piping with a nominal thickness of 0.133 inch. Visual (VT)
inspection of the piping found no defects that would warrant further evaluation or require
repair at this time.
Used Oil Tank / Containment Integrity Report
For
CarMax
Bakersfield, CA
HMT Inspection
April 5, 2017
Page 11 of 53
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
3.0 EVALUATION FOR CCR COMPLIANCE – USED OIL
STORAGE TANK
SUMMARY OF CA DTSC EVALUATION PER TITLE 22 CCR, Part 66265.191:
Pursuant to Title 22, §66265.191 of the California Code of Regulations, the following
highlights provide a summary evaluation of the major areas of concern regarding the
aboveground Used Oil Storage Tank under those regulations:
1. The primary design basis utilized in the construction of these tanks is normal
industry practice for horizontal aboveground storage tanks on structural supports.
The ancillary equipment includes carbon steel piping and couplings.
2. The products in these aboveground storage tanks include used motor oils / anti-
freeze that are temporarily stored prior to disposal off-site.
3. Corrosion protection measures directly applicable to the tanks and the ancillary
connections involve coatings on the tanks (paint or material resistant to
degradation). The walls of the tanks that are in contact with the stored liquid are
all of carbon steel construction resistant to corrosion from oil. The ancillary
connections are made of resistant material such as carbon steel to protect
against corrosion. These materials continue to be resistant to the stored liquid
based on current condition and age.
4. The aboveground storage tanks and ancillary connections have been on this site
and in operation for approximately 5 years (per client). The tanks and
connections show no evidence of deterioration at this time. If properly maintained
now and into the future, the tanks and connections should have a remaining
useful life of at least 20 years based on current condition and thickness
measurements. The next inspection interval for the tanks and connections has
been established at approximately 5 years based on the need to verify continuing
integrity of the material in contact with the stored liquid. Refer to corrosion rate
calculations in Tables B and D included herein.
5. Flow into the tanks comes through ancillary connections and is controlled
manually using pumps and switches located inside the service shop and on the
tanks or is processed manually. This equipment is monitored visually at the unit
by the service technicians. This equipment is suitable for continued service until
the next out-of-service or maintenance cycle.
Used Oil Tank / Containment Integrity Report
For
CarMax
Bakersfield, CA
HMT Inspection
April 5, 2017
Page 12 of 53
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
EVALUATION FOR CCR COMPLIANCE – USED OIL STORAGE TANK
(CONT’D.)
SUMMARY OF CA DTSC EVALUATION PER TITLE 22 CCR, Part 66265.191:
6. Our close Visual (VT) external inspection of the aboveground storage tanks and
of the ancillary connections (all equipment was in service) found no evidence of
defects in the walls or structural components of the tanks, or other concerns such as
metal loss from service conditions. The structural integrity is adequate until the next
inspection without concern regarding the possibility of leaks of any hazardous liquids
or failure of the components under service conditions. The tanks and ancillary
connections situated outside the service shop are exposed to corrosion from the
elements. The carbon steel Used Oil and Anti-Freeze Tanks and their ancillary
connections are coated. The connecting piping situated inside the service shop is
not exposed to corrosion from the elements.
In addition to complying with empirical design rules for continued service of steel tanks,
we have evaluated these storage structures and surrounding area in accordance with
the specified requirements of California Dept. of Toxic Substances Control Regulations
§66265.190 through §66265.200 (as applicable) and find the following to be true:
Pursuant to 22 CCR §66265.191, these structures now contain and will continue
to contain for the foreseeable future products that can be classified as non-RCRA
hazardous wastes;
Pursuant to 22 CCR §66265.191, these structures are of sufficient capacity as to
not be exempt from this regulation;
Pursuant to 22 CCR §66265.191, the tanks have been adequately designed to
industry standards for aboveground welded steel storage tanks and have
sufficient structural strength and product compatibility to store these non-RCRA
hazardous wastes on a long-term basis without collapse, rupture or failure;
Pursuant to 22 CCR §66265.191(k), the Used Oil / Anti-Freeze Tanks do have
secondary containment details that meet the requirements of 22 CCR
§66265.193, therefore;
Used Oil Tank / Containment Integrity Report
For
CarMax
Bakersfield, CA
HMT Inspection
April 5, 2017
Page 13 of 53
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
EVALUATION FOR CCR COMPLIANCE – USED OIL STORAGE TANK
(CONT’D.)
Pursuant to 22 CCR §66265.191(k), the following assessment details are known
or have been evaluated:
(k)(1) Tank configurations are horizontal and rectangular and raised
on steel supports bolted to the concrete floor with maximum gross
capacities of 1,000 gallons and 280 gallons for the Used Oil and the
Used Anti-Freeze tanks, respectively;
(k)(2) The tank construction standard is known (UL 142) and meets
empirical design criteria and normal industry practice for horizontal
welded steel structures;
(k)(2)(A) Material of construction (all parts in contact with liquid
waste) is carbon steel (grade not known);
(k)(2)(B) Material thickness of the tanks as measured are 0.187
inch nominal for the Used Oil and Anti-Freeze Primary Tanks, and
0.125 inch and 0.093 inch for the Used Oil and Anti-Freeze
Secondary Tanks, respectively;
(k)(2)(C) Tank connections are carbon steel nozzles / couplings up
to 6 inches in size;
(k)(2)(D) Flow into or out of the tanks is manually controlled;
(k)(2)(E) Tank details - basic dimensions are as given in the Tank
Data page included above;
(k)(3) The tanks have been on location and in service for
approximately 5 years. CarMax built the facility in March 2012,
started operation and installed the tanks during the same time
frame (per client);
(k)(4) Details of installation include double-wall carbon steel with
suitable containment details surrounding the tanks. These tanks
rest on a concrete base of adequate design to withstand the loads
imposed by the tanks resting on top and are anchored to the
concrete. Frost heave is not a consideration in the design of this
concrete slab at this location;
(k)(5) There is no cathodic protection system currently in place for
any of these tanks;
Used Oil Tank / Containment Integrity Report
For
CarMax
Bakersfield, CA
HMT Inspection
April 5, 2017
Page 14 of 53
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
EVALUATION FOR CCR COMPLIANCE – USED OIL STORAGE TANK
(CONT’D.)
(k)(6) Filling of the tanks is controlled and monitored manually. The
Used Oil and Used Anti-Freeze Tanks have overfill prevention
devices installed;
(k)(7) The non-RCRA liquid waste streams into these tanks are not
treated and are only stored in the tanks until off-site disposal is
arranged (approximately every 30 days per pick-up / service log, or
slightly longer for the anti-freeze tank);
(k)(8) The condition of the tanks indicates no structural integrity
issues (no excessive settlement, no measurable metal loss from
corrosion). There are no construction defects or installation issues
that would lead to possible leak from these tanks in the near future;
(k)(9) The tanks are constructed of carbon steel materials
compatible with the stored product and are resistant to any
corrosive effects without the need for internal lining;
(k)(10) The estimated remaining service life of the tanks is 20 years
based on the current condition and Ultrasonic (UT) testing, after
which a recommended remaining service life can be re-established
following periodic re-inspection and updated thickness readings.
Pursuant to 22 CCR §66265.193, the Used Oil / Anti-Freeze Tanks comply
with the requirements for secondary containment details as outlined in this
regulation;
Pursuant to 22 CCR §66265.194 the connections are visually monitored by
system operating personnel when the tanks are in use;
Pursuant to 22 CCR §66265.194, the Used Oil Storage Tanks fill process is
controlled by manually operated pumps and inspected visually, and the tanks
are constructed with secondary containment meeting details as outlined in this
regulation;
Compliance with, or input regarding applicability or method of compliance in
the future, for regulations 22 CCR §66265.193 through §66265.200 will be
supplied directly by the Owner as appropriate in the regulatory review
process.
Used Oil Tank / Containment Integrity Report
For
CarMax
Bakersfield, CA
HMT Inspection
April 5, 2017
Page 15 of 53
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
3.1 CONTAINMENT ASSESSMENT AND EVALUATION
We have evaluated the tank containment and find the following to be true:
The tank containment (external steel containment details) has now and will
continue to contain in the future liquids that can be classified as non-RCRA
hazardous materials.
The following assessment details are known or have been evaluated for each
tank:
1. Pursuant to 22 CCR §66265.193(b)(1); The secondary
containment (double-wall external steel tanks or containment
boxes) is designed and constructed such that it will contain any
minor leak of stored liquid until it can be properly cleaned;
2. Pursuant to 22 CCR §66265.193(b)(2); The secondary
containment has been designed to accepted industry practice for
total storage volume and is free of defects and may temporarily
retain these non-RCRA hazardous materials until such leaks or
spills are detected and cleaned up;
3. Pursuant to 22 CCR §66265.193(c)(1); The concrete base under
the tanks is adequately constructed according to accepted industry
practice and supports the Used Oil / Anti-Freeze Tanks as required;
4. Pursuant to 22 CCR §66265.193(c)(2); The concrete base under
the tanks is properly designed and of suitable strength and
thickness;
5. Pursuant to 22 CCR 66265.193(c)(3) & (4); The hazardous
materials action plan currently in place at the facility provides that
any leakage or spills from the tanks in this area will be cleaned as
soon as detected (visual inspection of this area is performed by the
operators responsible for this operations area);
6. Pursuant to 22 CCR §66265.193(e)(1)(A); The secondary
containment details for the Used Oil and Used Anti-Freeze Tanks
are directly exposed to the weather (situated outside the service
shop).
7. There is direct exposure to normal weathering environment and
rainfall for both tanks;
Used Oil Tank / Containment Integrity Report
For
CarMax
Bakersfield, CA
HMT Inspection
April 5, 2017
Page 16 of 53
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
3.2 PIPING ASSESSMENT AND EVALUATION
We have evaluated the tank connecting piping and find the following to be true:
Tank connecting piping has now and will continue to contain in the future liquids
that can be classified as non-RCRA hazardous materials.
The following assessment details are known or have been evaluated:
1. Pursuant to 22 CCR §66265.193(f); The connecting piping above
ground is designed and constructed of single-wall details that will
not separately contain any minor leak of stored liquid should it
occur;
2. Pursuant to 22 CCR §66265.193(f); The connecting piping is free
of defects and may temporarily retain these non-RCRA hazardous
materials until such leaks or spills are detected and cleaned up;
3. Pursuant to 22 CCR §66265.193(f); The connecting piping to the
tank is adequately constructed according to accepted industry
practice;
4. Pursuant to 22 CCR §66265.193(f); The connecting piping is
properly designed and of suitable strength and thickness;
5. Pursuant to 22 CCR §66265.193(f); The hazardous materials
action plan currently in place at the facility provides that any
leakage or spills from the tank piping will be cleaned as soon as
detected (visual inspection of this area is performed by the
operators responsible for this operations area);
6. Pursuant to 22 CCR §66265.193(f); No parts of this connecting
piping is buried but there is secondary containment in place that will
contain any leak should it occur;
7. The requirement for further containment based on the single-wall
above ground construction details have been addressed by the
provision of containment details beneath the piping circuits inside
and outside the service shop;
Used Oil Tank / Containment Integrity Report
For
CarMax
Bakersfield, CA
HMT Inspection
April 5, 2017
Page 17 of 53
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
PIPING ASSESSMENT AND EVALUATION (CONT’D.)
There is no waste treatment processing in the containment area. No further concern is
attached to this storage arrangement under the conditions seen at the site and as
described further herein. The connecting piping above ground does not currently meet
the requirements for secondary containment under DTSC regulations but is monitored
for leaks by system operators whenever the piping is in use as allowed for by DTSC
regulations.
We believe that the above information provides a suitable assessment of the Used Oil
Storage Tank Containment Area for CarMax at their facility in Bakersfield, CA for
structures containing non-RCRA hazardous waste materials and that the tank
containment details and piping details, including monitoring during operations,
meet the requirements per CA DTSC Title 22 CCR §66265.193. This report is
intended to provide adequate documentation for that purpose.
Used Oil Tank / Containment Integrity Report
For
CarMax
Bakersfield, CA
Inspection
April 5, 2017
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23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
5.0 NDT INSPECTION
5.1 NDT INSPECTION SCOPE
The following Nondestructive Testing (NDT) was conducted to evaluate the physical
characteristics of the tank:
A) Visual (VT) inspection of all accessible areas for the detection of anomalies
or significant defects that may affect tank integrity.
B) Random UT thickness readings on the tanks for the detection of recordable
internal metal loss. Performed in accordance with HMT UT Procedure No.
1611.1, Revision No. 5.
Used Oil Tank / Containment Integrity Report
For
CarMax
Bakersfield, CA
Inspection
April 5, 2017
Page 21 of 53
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
6.0 EQUIPMENT
6.1 ULTRASONIC
UT equipment utilized for the inspection was a USM Go Flaw Detector.
The transducer utilized was a Britek, 7.5 MHz, 0.312 inch dual element.
The calibration block utilized was a 5 step, 4340 steel test block.
Echogel 20 and water was used as a couplant.
Used Oil Tank / Containment Integrity Report
For
CarMax
Bakersfield, CA
Inspection
April 5, 2017
Page 22 of 53
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
7.0 TABLES
TABLE A
USED OIL TANK SHELL READINGS
(in inches)
Primary Top of Tank Readings
No. Thickness
1 0.180
2 0.182
3 0.182
4 0.176
5 0.178
Secondary Tank Shell Readings
No. NORTH EAST WEST SOUTH
1 0.129 0.130 0.128 0.130
2 0.129 0.130 0.128 0.128
3 0.128 0.129 0.129 0.129
4 0.128 0.129 0.130 0.128
5 0.129 0.129 0.130 0.129
Used Oil Tank / Containment Integrity Report
For
CarMax
Bakersfield, CA
Inspection
April 5, 2017
Page 23 of 53
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
TABLE B
USED OIL TANK SHELL PLATE CORROSION RATE
CALCULATIONS
Nominal/Original or Previous Shell Plate Thickness (inches) 0.187 inch
Maximum External Corrosion Depth 0.000 inch
Maximum Internal Corrosion Depth 0.000 inch
Minimum Acceptable Course Thickness 0.050 inch
Year of Inspection (Yi) 2017 year
Year of Construction (Yo) if using nominal thickness or Year of previous UT 2012 year
Average Remaining Thickness from External Thickness Readings 0.187 inch
Average Remaining Thickness from Internal Thickness Readings 0.180 inch
External Corrosion Rate 0.0000 inch/yr
Internal Corrosion Rate 0.0014 inch/yr
Remaining Life Calculation:
Minimum Thickness – from UL 142, Sections 17, 24 and 25 = 0.093 inch
Least Remaining Tank Shell Thickness from Inspection = 0.176 inch
Calculation = Least Remaining Thickness – UL 142 Minimum Thickness ÷ Calculated Corrosion Rate =
0.176 inch – 0.050 inch = 0.126 inch ÷ 0.0014 inch / year > 20 years Remaining Life
Used Oil Tank / Containment Integrity Report
For
CarMax
Bakersfield, CA
Inspection
April 5, 2017
Page 24 of 53
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
TABLE C
USED ANTI-FREEZE TANK SHELL READINGS
(in inches)
External Secondary Side Wall Readings
No. NORTH EAST WEST SOUTH
1 0.119 0.121 0.120 0.120
2 0.121 0.120 0.122 0.122
3 0.121 0.120 0.121 0.121
4 0.120 0.119 0.119 0.120
5 0.119 0.121 0.120 0.122
Primary Top of Tank UT Readings
No. Reading
1 0.178
2 0.176
3 0.180
4 0.179
5 0.176
Used Oil Tank / Containment Integrity Report
For
CarMax
Bakersfield, CA
Inspection
April 5, 2017
Page 25 of 53
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
TABLE D
USED ANTI-FREEZE TANK SHELL PLATE CORROSION RATE
CALCULATIONS
Nominal/Original or Previous Shell Plate Thickness (inches) 0.187 inch
Maximum External Corrosion Depth 0.000 inch
Maximum Internal Corrosion Depth 0.000 inch
Minimum Acceptable Course Thickness 0.050 inch
Year of Inspection (Yi) 2017 year
Year of Construction (Yo) if using nominal thickness or Year of previous UT 2012 year
Average Remaining Thickness from External Thickness Readings 0.187 inch
Average Remaining Thickness from Internal Thickness Readings 0.178 inch
External Corrosion Rate 0.0000 inch/yr
Internal Corrosion Rate 0.0018 inch/yr
Remaining Life Calculation:
Minimum Thickness – from UL 142, Sections 17, 24 and 25 = 0.093 inch
Least Remaining Tank Shell Thickness from Inspection = 0.176 inch
Calculation = Least Remaining Thickness – UL 142 Minimum Thickness ÷ Calculated Corrosion Rate =
0.176- inch – 0.050 inch = 0.126 inch ÷ 0.0018 inch / year > 20 years Remaining Life
Used Oil Tank / Containment Integrity Report
For
CarMax
Bakersfield, CA
Inspection
April 5, 2017
Page 26 of 53
23263774 Carmax Bakersfield DTSC Report (Rev-2) 4/12/2017 8:09:00 AM
8.0 WARRANTY
WARRANTY
HMT Inspection, a division of HMT LLC (“HMT”) has evaluated the condition of this tank
based on the observations and measurements made by the HMT Tank Inspector. While
our evaluation accurately describes the condition of the tank at the time of inspection,
the tank owner / operator must independently assess the inspection information / report
provided by HMT and any conclusions reached by the tank owner / operator and any
action taken or omitted to be taken are the sole responsibility of the owner / operator.
With respect to inspection and testing, HMT warrants only that the services have been
performed in accordance with accepted industry practice. If any such services fail to
meet the foregoing warranty, HMT shall re-perform the service to the same extent and
on the same conditions as the original service.
The preceding paragraph sets forth the exclusive remedy for claims based on failure or
of defect in materials or services, whether such claim is made in contract or tort
(including negligence) and however instituted, and, upon expiration of the warranty
period, all such liability shall terminate. The foregoing warranty is exclusive and in lieu of
all other warranties, whether written, oral, implied or statutory. NO IMPLIED
WARRANTY OF MERCHANTABILITY OR FITNESS FOR PURPOSE SHALL APPLY,
nor shall HMT be liable for any loss or damage whatsoever by reason of its failure to
discover, report, repair or modify latent defects or defects inherent in the design of any
tank inspected. In no event, whether a result of breach of contract, warranty or tort
(including negligence) shall HMT be liable for any consequential or incidental damages
including, but not limited to, loss of profit or revenues, loss of use of equipment tested or
services by HMT or any associated damage to facilities, down-time costs or claims of
other damages.
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