UST Systems:
I Inspecting And
Maintaining Sumps
And Spill Buckets
Practical Help And Checklist
Printed on recycled paper
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LIST Systems: Inspecting And Maintaining Sumps And Spill Buckets
Contents
Introduction 1
Who Should Read This Manual? 1
How Will This Manual Help You? 1
Why Should You Care About Sump Maintenance? 1
Safety Considerations 3
Getting To Know Your Sumps 4
What Is A Sump? 4
What Kinds Of Sumps Are Associated With My LIST System And Where Are They
Located? 4
How Do You Access Your Sumps And Spill Buckets? 6
Basic Maintenance Procedures For Sumps And Spill Buckets 7
What Can You Do To Ensure Your Sumps and Spill Buckets Are
In Good Condition? 7
What Should You Look For When You Inspect Your Turbine, Dispenser, And
Transition/Intermediate Sumps? 7
What Should You Look For When You Inspect Your Spill Buckets? 12
Where Can You Get More Information On This Topic? 15
Appendix A: Sample Underground Storage Tank Sump And Spill Bucket
Inspection Checklist
This document provides information on inspecting and maintaining sumps and spill
buckets. The information provided in this manual is not intended to replace or
contradict your specific manufacturer's instructions for maintaining your sumps.
Nothing in this manual is intended to endorse or criticize any specific type of equipment
or any manufacturer. Photographs of common sump problems are provided for
instructional purposes only. This document does not replace existing federal or state
regulations, nor is it a regulation itself - it does not impose legally binding requirements.
For regulatory requirements regarding LIST systems, refer to the federal regulations
governing underground storage tank systems (40 CFR Part 280) or corresponding
state regulations.
Additional copies of this manual are available at no cost by calling EPA's toll-free distribution
center at 800-490-9198. Or you can download a color copy by going to OUST's World Wide
Web Home Page at http://www.epa/gov/oust/pubs
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LIST Systems: Inspecting And Maintaining Sumps And Spill Buckets
Introduction
Who Should Read This Manual?
This manual is intended for owners and operators of underground
storage tank (UST) systems; specifically, anyone who oversees
the operation and maintenance of UST systems that contain and
dispense petroleum products. UST owners/operators should
ensure that only qualified personnel conduct inspection and
maintenance activities.
How Will This Manual Help You?
This manual covers recommended inspection guidelines and best
management practices for sumps associated with your UST
system. This manual will:
* Help you identify and inspect the sumps associated with
your UST system, including the equipment in your sumps.
* Explain some simple steps you can take to maintain your
sumps and the equipment in your sumps, as well as
identify potential problems.
* Provide you with tips for fixing common problems before
they cause a release to the environment.
For more complete guidance on how to operate and maintain your
UST system, refer to the U.S. Environmental Protection Agency
(EPA) document, Operating And Maintaining Underground
Storage Tank Systems, Practical Help And Checklists (EPA 510-
B-05-002, May 2005).
Why Should You Care About Sump
Maintenance?
Despite advances that have greatly reduced the threat of
petroleum releases from UST systems into the environment, some
UST systems continue to experience releases. Inadequate
operation and maintenance is one reason these systems continue
to experience releases.
After reading this
manual, you
should be able to
identify the
different types of
sumps associated
with your UST
system and be
familiar with how
to identify some
common sump-
related problems.
The average
cleanup cost for a
leaking UST is
about $100,000.
The cost can be
more than
$1,000,000 if
groundwater is
affected.
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While this manual addresses a number of issues related to sump
maintenance, it may not cover some details specific to your
particular sumps. Keep in mind the information provided in this
manual is not intended to replace or contradict your specific
manufacturer's instructions for maintaining your sumps and the
equipment in your sumps.
Dispenser
Inner sump lid
Line leak detector
Turbine pump head
Sump sensor
Vapor recovery port lid
Vapor recovery port
Fill port and spill bucket
LIST Systems: Inspecting And Maintaining Sumps And Spill Buckets
Sumps, including the sumps beneath dispensers, sumps around
the submersible pump (turbine) head1, transition/intermediate
sumps, and spill buckets are common sources of releases.
Releases of even small volumes of product can seep into the
ground and contaminate soil and groundwater. Inspecting and
maintaining your sumps is generally simple and can prevent or
minimize such releases.
This manual
presents practical
help and a
checklist for
inspecting and
maintaining
sumps. State and
local agencies may
require these or
other activities.
Please check with
your state or local
agency to
determine their
specific
requirements.
Diagram of an LIST system
1 Submersible turbine pumps are often known by their acronym STP.
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LIST Systems: Inspecting And Maintaining Sumps And Spill Buckets
Safety Considerations
If you perform sump inspection and maintenance activities, you
should be experienced and aware of hazards and safety issues.
Chances are you will be working in a high-traffic area, such as a
gas station. You should properly mark off your work area and take
appropriate steps to protect yourself. You should have the
following items:
Safety barriers, such as traffic cones or yellow plastic tape
to mark off your work area
Orange safety vest
Hard hat (for construction sites)
Steel-toed boots
First-aid kit
Chemical resistant gloves
You should consider these additional safety precautions:
* Sump lids may be large and very heavy and may require
more than one person to lift. Use caution when lifting large
steel lids.
* Be aware of the possibility of explosive or harmful vapors
when inspecting and maintaining sumps. Avoid breathing
in petroleum vapors.
* Please note that OSHA designates some sumps as
confined spaces. See OSHA's standard on confined
spaces in Title 29 of the Code of Federal Regulations, Part
1910.146.
http://www.osha. gov/pls/oshaweb/owadisp.show_documen
t?p_table=STAN DARDS&p_id=9797
Person wearing safety gear
while inspecting a sump
Person removing a sump lid
within a marked inspection
area
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LIST Systems: Inspecting And Maintaining Sumps And Spill Buckets
Getting To Know Your Sumps
What Is A Sump?
A sump is a subsurface area (pit) designed to provide access to
equipment located below ground and, when contained, to prevent
liquids from releasing into the environment.
Sumps may or may not be contained. Contained sumps have
sides and a bottom, are designed to be liquid tight, and may have
a special cover designed to keep out water. Uncontained sumps
generally do not have a bottom and are not designed to prevent
liquid from entering or exiting the sump. These sumps may use
wooden or metal sheeting to restrict the slumping of soil or
crushed rock onto the equipment and to prevent the surface
pavement from buckling or caving.
What Kinds Of Sumps Are Associated With My
LIST System And Where Are They Located?
The types of sumps likely to be associated with your LIST system
are:
Turbine Sumps - Turbine sumps are designed to provide access
to the turbine area above the tank. The turbine area may house
the submersible turbine pump head, piping, line leak detectors,
interstitial monitoring devices, wiring, and other equipment. You
generally will find turbine sumps directly above your USTs.
Turbine sump lids generally range from 3 to 4 feet in diameter and
can be round, oval, square, or rectangular in shape.
Dispenser Sumps - Dispenser sumps are designed to provide
access to piping, flex connectors, shear valves, and other
equipment located beneath the dispenser. Dispenser sumps are
found directly under your dispensers.
Uncontained turbine sump
Contained turbine sump
Contained dispenser sump
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LIST Systems: Inspecting And Maintaining Sumps And Spill Buckets
Transition/Intermediate Sumps -Transition/intermediate sumps
are less common than other sumps, but can be found along the
piping runs that connect the tanks to the dispensers, and are
designed to provide access to the piping. Transition sumps are
used to transition from above-ground piping to below-ground
piping or, in some cases, to transition between different types of
piping. Intermediate sumps are located at key points in the piping
system (e.g., low spots, branches, tees). Transition/intermediate
sump lids generally range from 3 to 4 feet in diameter and can be
round, oval, square, or rectangular in shape.
Spill Buckets - Spill buckets are contained sumps installed at the
fill and/or vapor recovery connection points to contain drips and
spills of fuel that can occur during delivery. Spill buckets are
located where the delivery driver connects the product and/or
vapor recovery hoses to your tank. Spill buckets can be found
directly above your LIST, at a location that is away from your LIST
(remote), or both. They typically range in size from 5 to 25
gallons, and lids range from 1 to 2 feet in diameter. Spill buckets
may also be installed within a larger sump, similar in construction
to a turbine sump, for secondary containment. In this case, you
will only need to open your smaller lids to access your spill
buckets.
Spill Bucket Lid
Turbine Sump
Lid
View of sump lids
Transition/intermediate
sump
Spill bucket
Fill and vapor recovery lids
installed within a larger sump
lid
Did You Know?
Most LIST systems
must have spill
buckets at each fill
pipe where fuel is
delivered into the
LIST. Some
facilities also may
have a second spill
bucket around the
Stage I vapor
recovery line.
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LIST Systems: Inspecting And Maintaining Sumps And Spill Buckets
How Do You Access Your Sumps And Spill
Buckets?
You may need tools such as a large screwdriver, pry bar, wrench,
or hammer to open your sump lids. Composite lids may require a
specialized tool that you probably have on site. Have someone
help you in lifting large lids, as they may be very heavy. Use
caution when opening the lids and be aware of the following:
Square, rectangular, or oval sump lids can fall through the
opening and damage the piping, submersible pump, or
tank.
Round lids, while not typically capable of falling into the
sump, may swing down and damage the turbine head or
line leak detector.
If applicable, follow your equipment manufacturer's
recommendations if special instructions are necessary to
open the sump lids.
You may need a key to remove the dispenser cover in
order to access the dispenser sumps.
Circular steel sump lid pulled
back to show the inner lid
covering the turbine sump
Square steel sump lid pulled
up to show the inside of an
uncontained turbine sump
Circular spill bucket lid
pulled back to show the
fill port with a spill bucket
Generally, sumps will have a traffic load rated lid, beneath which
may be either direct access to the equipment or, if contained, an
inner lid covering the contained area.
Dispenser cover pulled
off to show the dispenser
piping and equipment
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LIST Systems: Inspecting And Maintaining Sumps And Spill Buckets
Basic Maintenance Procedures
For Sumps And Spill Buckets
What Can You Do To Ensure Your Sumps and
Spill Buckets Are In Good Condition?
Maintaining your sumps and spill buckets will involve gaining
access to them, inspecting them on a regular basis, assessing
whether any problems exist, and ensuring any problems are
addressed. For serious problems (e.g., obvious leaks occurring on
the piping and equipment, cracked spill buckets or sidewalls,
cracked or missing seal around the lid), it's best to contact your
LIST contractor or the manufacturer of your LIST equipment to
have the problem fixed. Appendix A contains a sample checklist
you may want to use to guide your sump inspections.
What Should You Look For When You Inspect
Your Turbine, Dispenser, And
Transition/Intermediate Sumps?
Are The Lids Tight And Sealed Correctly? Check to ensure the
lids to the turbine, transition, and intermediate sumps create a
tight seal when closed and are securely fastened. The seals of the
sump lids often dry out, crack, and require replacement; so you
need to ensure they are in good condition. Water in your sumps
may be an indication of a bad seal.
Are The Sump Walls Intact? Check to ensure the walls of your
sump are intact and are not slumping or warping. If your sump is
not contained, check the sidewalls to ensure there is no caving.
Note: To avoid
accumulation of
surface water, you
should check the
seals of your
sumps' lids more
frequently if they
are located at a low
point on the
property or in the
path of surface
water runoff.
If you identify or
suspect a release
of fuel to the
environment,
report this to your
implementing
agency. For a list
of state UST
websites, go to:
http://www.epa.gov
/oust/states/
stateurl.htm
Contained turbine sump full of
liquid
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LIST Systems: Inspecting And Maintaining Sumps And Spill Buckets
Is The Sump Free Of Debris, Liquid, Or Ice? Debris, liquid, and
ice can damage equipment, reduce capacity (if contained), and
interfere with your equipment's ability to operate correctly. For
example, water in your sump will reduce capacity and may cause
metal equipment in your sump to corrode. Fuel in your sump will
also reduce capacity and may damage some plastic sumps and
other components not designed for long term contact with
petroleum. Similarly, used dispenser filters may contain small
amounts of petroleum, so they should not be left inside your
sump. You should carefully remove and properly dispose of any
debris, liquid, or ice in your sumps.
Did You Know?
Some sensors may
alarm only when in
contact with
petroleum. If
covered
completely with
water, they will not
alarm, even in the
event of a
petroleum leak.
Dry, debris-free contained turbine
sump
Contained sump with liquid
and debris
Is The Sump Free Of Cracks Or Holes? Examine your contained
sumps for signs of damage (e.g., cracks or holes). Check to
ensure no cracks are present around the areas where
components, such as wiring conduit and piping, enter your sumps.
Cracks and holes mean your sump will no longer contain product
or prevent releases to the environment.
Are Sump Components Leak-Free? Check to ensure the piping,
fittings, and connections in your sump are not leaking or dripping
fuel.
Is The Sump Free Of Staining/New Staining? Check to ensure
no new stains are present since your last inspection. New staining
indicates a drip or spill has occurred.
Staining
8
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LIST Systems: Inspecting And Maintaining Sumps And Spill Buckets
Are The Sensors Positioned Correctly?2 If you have sensors,
check to ensure they are positioned properly in the lowest part of
your sump and below the piping entry. Sensors should not be
raised as the result of false alarms or for any other reason.
Raised or disabled sensors will take longer or fail to detect a leak
and could violate regulatory requirements.
Sump sensor
Sump sensor in contained turbine sump
Float sump sensor
Liquid sump sensor
Are All Penetrations Into The Sump In Good Condition?2
Check to ensure all areas where electrical wires, conduits, and
piping enter the sump are sealed. Cracked or loose seals around
the penetrations can allow liquids to enter the sump and can allow
fuel to be released into the surrounding soils if a release occurs
inside the sump.
Sump penetration seals in
poor condition
' Only for contained sumps
Sump penetration seals in
good condition
Did You Know?
A crack or hole in
your sump below
the sump sensor
will not allow liquid
to accumulate in
the sump to a level
necessary to
activate the
sensor. As a result,
liquid may be
released
undetected. Such
cracks or holes
need to be repaired
immediately.
Did You Know?
Some plastic
flexible piping is
installed within a
larger pipe (or
chase). There may
be a seal between
the primary pipe
and the chase.
Check with the
piping maker to
determine the
proper position of
the seal.
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LIST Systems: Inspecting And Maintaining Sumps And Spill Buckets
Are The Test Boots Positioned Correctly And In Good
Condition?3 A test boot is found on secondarily-contained piping
and is a flexible sleeve usually made of rubber with a valve
located either at the entry to the sump or on the piping in the
sump. It is used to test the space between the inner and outer
piping walls for tightness. Check to ensure the test boots are in
good condition, not cracked or torn, and positioned correctly in the
sump.
To ensure a leak can be detected by your leak detection
equipment, test boots should be positioned so they allow product
to enter your sump if a leak from the primary piping occurs. There
are a variety of different configurations for test boots. If you are
unsure of the appropriate configuration, check with your
contractor.
Test boot located in a sump
Test boots positioned at
sump wall, right test boot is
torn
Is The Piping And Other Equipment In Good Condition?
Sumps may contain various types of piping and equipment such
as leak detection equipment, turbine motors, line leak detectors,
sensors, conduits, and flex connectors.
Contained turbine sumps and equipment in good condition
Did You Know?
If your metal
piping, including
metal flex
connectors, is in
contact with the
ground, it must be
protected from
corrosion.
! Typically only for contained sumps
10
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LIST Systems: Inspecting And Maintaining Sumps And Spill Buckets
When inspecting the piping and equipment in your sumps, you
should watch for the following conditions:
* For metal piping, check to ensure the piping is not severely
corroded, in contact with the ground if it does not have
corrosion protection, or otherwise degraded.
* For fiberglass piping, check to ensure the piping is not
cracked, delaminated, or otherwise degraded.
* For flexible piping, check to ensure the piping does not
have abnormal bends, breaks, cracks, or kinks; is not
bulging, swelling, or growing; has not become soft, spongy,
or discolored; and is not otherwise distorted or degraded.
* Check to ensure the fittings and flexible connectors are not
twisted or misaligned and the flexible connectors are not
cracked, kinked, etc.
* Check to ensure other pieces of equipment, including
pump head, line leak detector, and sensors, are not visibly
damaged, severely corroded, etc.
Flexible piping is cracked
Metal flexible connector is twisted
due to growth of flexible plastic
piping
Equipment and metal
piping covered with dirt in
uncontained sump
Fiberglass piping is
cracked
Flexible piping is degraded
due to microbial growth
Flexible piping is kinked
Flexible piping is bulging
11
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LIST Systems: Inspecting And Maintaining Sumps And Spill Buckets
What Should You Look For When You Inspect
Your Spill Buckets?
Are The Lids To Your Spill Buckets In Good Condition? Check
to ensure the lids to your spill buckets are in good condition so
they will keep water out when the lid is closed. Ensure that when
the lids to your spill buckets are in the closed position, they create
a good seal and are secured tightly. Some spill buckets contain a
rubber gasket inside the cover; check to ensure the rubber gasket
is in good condition and creates a proper seal when the lid is
closed.
Cracked spill bucket lid
Spill bucket lid gasket
Check to ensure the lid is not touching the fill cap. This situation
should be repaired because it could potentially damage the fill
pipe and the tank if it is in an area where vehicles drive over the
lid.
Is The Spill Bucket Free Of Debris, Liquid, Or Ice? Examine
your spill buckets to determine whether they contain debris, liquid,
or ice. For example, water in your spill bucket will reduce capacity
and may cause metal equipment in your sump to corrode. Fuel in
your spill bucket will also reduce capacity and may damage some
plastic spill buckets not designed for long term contact with
petroleum. You should carefully remove and properly dispose of
any debris, liquid, or ice found in your spill buckets during your
inspections. You should also check for and remove any liquid and
debris present in your spill buckets before and after every delivery.
A missing or
damaged spill
bucket lid may be
a safety hazard.
Replace it as soon
as possible. Until
the lid is replaced,
cover and barri-
cade the area to
prevent potential
accidents.
Spill bucket that contains liquid
12
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LIST Systems: Inspecting And Maintaining Sumps And Spill Buckets
Some spill buckets are equipped with a valve that allows you to
drain accumulated liquid into your LIST. Others may be equipped
with a manual pump so fuel can be transferred to your LIST
system by pumping it through the fill pipe or removing the fuel and
disposing of it properly. However, keep in mind that when you
pump out or drain your spill bucket into your LIST, any water and
debris present also will enter the LIST. This could lead to internal
corrosion, dispensing problems, and the need to remove
contaminated water from the tank. If your spill bucket is not
equipped with a drain valve or pump, you can still remove the
liquid and debris and dispose of them appropriately. Liquid can be
removed with a portable pump, such as the one on the right.
Drain
Spill bucket with a drain valve
Spill bucket with a manual
pump
Is The Spill Bucket Free Of Cracks Or Holes? Examine the spill
buckets for evidence of cracks or holes. If you have a metal
bucket, check for corrosion and rust. Also check for deformations
in the spill buckets or separation of the spill bucket from the fill
pipe.
Portable pump
If your spill bucket
is always dry, this
may be an
indication that it is
not able to contain
product. You may
need to test to
ensure it is liquid
tight.
Spill bucket in poor condition -
note the gap between the spill
bucket and the fill pipe
13
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LIST Systems: Inspecting And Maintaining Sumps And Spill Buckets
Are The Drain Valves Operational? Some spill buckets have
drain valves. Check to ensure the drain valve is free of debris and
operational (e.g., it can close tightly and be opened to drain fuel in
the spill bucket). If the drain valve is left open:
* I twill act as a vent
o Possibly affecting the ability of your overfill device
to function properly;
o Allowing potentially dangerous vapors to build up in
the spill bucket or to be released to the soil or
groundwater;
o Possibly affecting the operation of the Stage II
vapor recovery system.
* It can allow water and debris to enter your tank.
Never pump fuel
from your spill
buckets into storm
or sewer drains as
a method of
disposal.
Improper disposal
can contaminate
surface and
groundwater,
result in
vapor/explosion
hazards, damage
sewage treatment
plants, and may be
in violation of state
or federal law.
Spill bucket drain valve
14
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LIST Systems: Inspecting And Maintaining Sumps And Spill Buckets
Where Can You Get More Information On This Topic?
Federal Agencies
Publications
U.S. EPA
Office of Underground Storage Tanks
http://www.epa.qov/oust
U.S. Department of Labor
Occupational Safety and Health Administration
http://www.osha.gov
1-800-321-OSHA (6742)
Organizations
API -American Petroleum Institute
www.api.org
(202) 682-8000
FTPI - Fiberglass Tank and Pipe Institute
www.fiberglasstankandpipe.com
(281)568-4100
NACE International - Formerly National Association of
Corrosion Engineers
www.nace.org
(281)228-6200
NFPA - National Fire Protection Association
www.nfpa.org
(617)770-3000
PEI - Petroleum Equipment Institute
www.pei.org
(918)494-9696
STI - Steel Tank Institute
www. stee Ita n k. co m
(847) 438-8265
The publications listed below are free and available
from the U.S. EPA. You can access these
publications via EPA's website or you can call, write
to, or fax EPA.
* You can download, read, or order
documents from
http://www.epa.gov/swerust1/pubs/index.htm
* To order free copies or ask questions, call
EPA's publication distribution toll-free
number at 800-490-9198 or fax 513-489-
8695. You can also write and ask for free
publications by addressing your request to
EPA's publication distributor: National
Service Center for Environmental
Publications (NSCEP), Box 42419,
Cincinnati, OH 45242.
Operating and Maintaining Underground Storage
Tank Systems: Practical Help and Checklists, U.S.
EPA, Office of Underground Storage Tanks,
Washington DC, EPA 510-B-05-002, May 2005.
Musts for USTs: A Summary of the New Regulations
for Underground Storage Tank Systems, U.S. EPA,
Solid Waste and Emergency Response, Washington
DC, EPA-510-K-95-002, July 1995.
Model Underground Storage Tank Environmental
Results Program Workbook, U.S. EPA, Solid Waste
and Emergency Response, Washington DC, EPA R-
04-003, June 2004.
Other Sources
For additional information on UST system operation
and maintenance, go to U.S. EPA Office of
Underground Storage Tanks, List of Operation and
Maintenance Tools
http://www.epa.gov/swerust1/ustsvstm/o&m tools.html
For links to state UST websites go to
http://www.epa.gov/oust/states/stateurl.htm
15
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Appendix A
Note: Federal LIST regulations do not require you to report your maintenance activities, use
this form, or keep any specific records of your sump inspection and maintenance practices.
Sample Underground Storage Tank Sump And Spill Bucket Inspection Checklist
Name:
Date/Time Of Inspection:
Comments/Follow-Up Needed:
Choose yes or no for each question that applies.
Choosing no on any item indicates a problem that should be corrected.
When you have corrected the problem, check the fixed box.
Turbine/Transition/Intermediate Sumps
Are The Lids Tight And Sealed Correctly?
Are The Sump Walls Intact?
Is The Sump Free Of Debris, Liquid, Or Ice?
Is The Sump Free Of Cracks Or Holes?*
Are Sump Components Leak-Free (No Leak Or Drips)?
Is The Sump Free Of Staining/New Staining?
Are The Sensors Positioned Correctly?*
Are All Penetrations Into The Sump In Good Condition?*
Are The Test Boots Positioned Correctly And In Good Condition?*
Is The Piping And Other Equipment In Good Condition?
Dispenser Sumps
Is The Sump Free Of Debris, Liquid, Or Ice In The Sump?
Is The Sump Free Of Cracks Or Holes?
Are Sump Components Leak-Free (No Leak Or Drips)?
Is The Sump Free Of Staining/New Staining?
Are The Sensors Positioned Correctly?
Are All Penetrations Into The Sump In Good Condition?
Are The Test Boots Positioned Correctly And In Good Condition?
Is The Piping And Other Equipment In Good Condition?
Spill Buckets
Are The Lids To Your Spill Buckets In Good Condition?
Is The Spill Bucket Free Of Debris, Liquid, Or Ice?
Is The Spill Bucket Free Of Cracks Or Holes?
Are The Drain Valves Operational?
Sump
Yes
\lo.:
No Fixed?
! n
1 n
! n
1 n
! n
1 n
! n
1 n
! n
1 n
Dispenser No.:
Yes
Bucket
Yes
No Fixed?
1 n
| n
n
n
| n
i n
n
| n
No.:
No Fixed?
D
! D
D
i D
Sump 1
Yes
-Jo.:
No Fixed?
! n
1 n
! n
1 n
! n
1 n
! n
1 n
! n
1 n
Dispenser No.:
Yes
Bucket
Yes
No Fixed?
1 n
| n
n
n
| n
i n
n
| n
No.:
No Fixed?
D
i n
n
i n
Sump h
Yes
Jo.:
No Fixed?
! n
1 n
! n
1 n
! n
1 n
! n
1 n
! n
1 n
Dispense No.:
Yes
Bucket
Yes
No Fixed?
1 n
| n
n
D
| n
i n
D
| n
No.:
No Fixed?
D
D
D
D
Sum|
Yes
) No.:
No Fixed?
! n
1 n
! n
1 n
! n
1 n
! n
1 n
! n
1 n
Dispenser No.:
Yes
No Fixed?
1 n
| n
n
n
| n
i n
n
| n
Bucket No.:
Yes
No Fixed?
D
i n
n
i n
*Only for contained sumps
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United States Solid Waste And EPA 510-R-05-001
Environmental Protection Emergency Response May 2005
Agency 5401G www.epa.gov/oust/pubs
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