United States
Environmental Protection
Agency
Solid Waste And
Emergency Response
5403W
EPA510-B-93-004
November 1993
Doing Inventory Control Right

For Underground Storage Tanks
                             i Printed on Recycled Paper

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Why You Should Read This Booklet If You
Use Inventory  Control
Federal and state laws require underground storage tanks (USTs)
to have leak detection.

If your USTs do not have leak detection, you can be cited for
violations and fined.  Leak detection violations can also keep
you  from  getting  legally  required insurance  coverage and
reimbursement for cleanup costs.  Without leak detection, you
constantly risk discovering a leak only after it becomes a major
financial burden for yourself and an environmental problem for
everyone.

If  inventory  control is part of your leak detection, then this
booklet can help you make sure you  do inventory  control
correctly.

Inspections conducted nationwide indicate that most people
who think they are doing inventory control  are not doing it in a
way that is likely to find leaks and meet the law's requirements
for leak detection.  So even if you are SURE you are doing
inventory control right, read this booklet carefully—it could save
you a lot of grief and money.

If you need information on federal leak detection requirements
and the various methods  of leak detection available to you, see
"Straight Talk On Tanks."  Call EPA's toll-free  Hotline at 800
424-9346 and  order this free publication by  number: EPA
530/UST-90/012.
Straight Talk On Tanks
                                 -1-

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How Does  Inventory  Control Work?

This booklet helps you use inventory control to meet federal
regulatory leak detection requirements by showing you how
to do three important tasks:

     •    Good sticking

     •    Good math

     •    Good recordkeeping

Without these three, you may fail to meet the leak detection
requirements. To  do  inventory control  right, you have to
spend time to make sure that you consistently measure the
tank's contents  correctly, that you  don't let math errors
creep into your daily and monthly calculations, and that you
keep complete,  easy-to-read records on file for at  least a
year.

Basically, inventory control requires daily measurements of
tank contents and math calculations that let you compare
your "stick" inventory (what  you've measured)  to your
"book" inventory (what your recordkeeping indicates you
should  have).  Some  people call  this process  "inventory
reconciliation."  If the  difference between your "stick" and
"book" inventory is too large, your tank may be leaking.

Be sure you read about several important restrictions on the
use of inventory control that are described on the next page.
To use INVENTORY CONTROL correctly,

follow Steps 7—5 starting on page 6.
                -2-

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     Please note these important restrictions on the use of
     inventory control as leak detection:
•    Inventory control can never be used alone. Inventory control
     must always be used  in combination with tank tightness
     testing. Tanks must be tightness tested every 12 months if
     they  do not have corrosion  protection  and spill/overfill
     devices. Tanks  with  corrosion protection and spill/overfill
     devices must be tested every 5 years.

•    Inventory control is a  TEMPORARY leak detection method.
     You can use inventory  control only for 10 years after
     installing a  new tank that  has corrosion protection and
     spill/overfill devices or for 10 years after upgrading  an old
     tank with corrosion protection and spill/overfill  devices. After
     the  10-year  period, you must use a monthly  monitoring
     method, such as  groundwater monitoring  or interstitial
     monitoring.

     Tanks without corrosion protection and spill/overfill devices
     can use inventory control only  until December 1998,  when
     these tanks must be upgraded or closed. (See "Straight Talk
     On Tanks.")

•    The combined use of  inventory control and tank tightness
     testing  does  not meet your tank system's leak detection
     requirements for piping. Pressurized and some suction piping
     must use other methods of leak detection, such as interstitial
     monitoring.  (See "Straight Talk On Tanks.")
     If  you  don't   pay   careful   attention  to   these
     restrictions, you will fail to meet the leak detection
     requirements.
                          -3-

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Do You  Have  The  Right  Equipment?
Gauge Stick Or Other Gauges
      The  gauge stick used to  measure the  depth of liquid in an
      underground tank must be marked or notched to the Va inch, starting
      with zero at the bottom end. Check your stick to be sure the end
      has not been worn or cut off and that the stick is not warped.  The
      stick should be made of non-sparking material, such as wood, and
      varnished to minimize the creeping of fuel above the actual fuel level
      in the  tank.   Instead of using a  gauge  stick, you may use a
      mechanical or  electronic tank level monitor.  Whatever measuring
      device  you use must be capable of measuring the level of product
      over the full range of the tank's height to the nearest Va inch.

Pastes For Finding Water Or Fuel
      You  must  check  for water in the bottom of the  tank at least once
      each month by smearing a water-finding paste along the bottom of
      the gauge  stick. The paste changes color when it comes in contact
      with water.   Many operators  improve  their  stick readings by
      smearing a fuel-finding paste on about 6 inches  of the stick where
      they expect the fuel level to be. Fuel-finding paste changes color
      when it comes in contact with fuel.

Forms
      The instructions in this booklet are keyed to two  forms: the "DAILY
      INVENTORY WORKSHEET" and the "MONTHLY INVENTORY RECORD."  You
      will find filled-in sample copies of these forms on  the last two pages
      of this booklet.  These samples are on perforated pages, so tear
      them out and  refer to them  while you read through the directions
      that  are keyed alphabetically to the sample forms.  Also, near the
      back of the booklet, you will find "masters" you can copy repeatedly
      to provide forms  for use in your recordkeeping.  If these forms are
      filled out according to the instructions in this booklet, you will be in
      compliance with federal regulations for inventory control.  You
      should  find out if state or local requirements have limitations on the
      use of inventory control or have requirements that are different from
      those  presented  in this booklet.   You can  use other  standard
      recordkeeping  forms, as long  as they  are clear,  consistent, and
      contain all the information  required by the federal and state leak
      detection regulations.
                       -4-

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Tank Chart
      A tank chart is a table that converts the number of inches of liquid
      in the tank into the number of gallons.  You need a tank chart that
      exactly matches your storage  tank (tank  manufacturers usually
      provide charts for their tanks). If you have more than one tank, you
      will need a chart for each tank unless the tanks are identical.  The
      tank chart  must show conversion to gallons for each Va inch stick
      reading. If your tank chart does not convert each 1/a inch reading into
      gallons, contact the tank manufacturer, or, if you have a steel tank,
      the Steel Tank Association (708 438-8265) to get an appropriate
      chart.

      You always need to convert inches into gallons in order to fill out the
      forms correctly and to do the necessary math.  To convert inches
      into gallons, find your stick's reading to the nearest 1/a inch on the
      tank chart, then simply read across to the gallons column to find the
      number of  gallons.   If you cannot  get a tank chart  showing
      conversion to gallons for each Va inch reading, you  must do the
      additional math explained  on  page 9.

Drop Tube
      The fill  pipe through which the fuel  is delivered into the tank must
      have a  drop tube extending to within  1 foot of the bottom of the
      tank. Stick measurements should be made through a drop tube in
      the fill pipe or gauging port.  If your fill pipe does not have a drop
      tube, call your petroleum equipment supplier to have one installed.

Calibrated Dispensing Meters
      Meters must be calibrated according to local standards.

Manifolded Tanks
      If you have manifolded tanks or dispensers that blend fuel, consider
      these tanks as one tank system if they share a common inventory
      of stored fuel. As you follow the directions  on the following pages,
      you will need to combine your measurements and calculations for all
      the tanks manifolded into one system.
                                        -5-

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                       Step 1— Measure  The Tank's Contents
Use the sample "DAILY
INVENTORY WORKSHEET"
from the fast two
pages of the booklet
to see where you put
the information from
fetters "A" through
"M" in the following
directions.
 You must measure the tank every day that fuel is added or removed.  You
 may take measurements using a gauge stick or a mechanical or electronic
 tank level monitor.

 No fuel can be added or removed from the tank while you are performing
 Step 1 or Step 2.

 Every day  you measure the tank,  you should fill out a "DAILY INVENTORY
 WORKSHEET."  As you go through the following directions, refer to the
 sample DAILY INVENTORY WORKSHEET you will find on the last pages of this
 booklet. For easy reference, the sample is on a perforated page so you can
 tear it out and keep it handy as you read through the directions. Also, near
 the back of the booklet is a "master copy"  on a perforated page you can
 tear out to make copies of  the  DAILY  INVENTORY  WORKSHEET for  your
 recordkeeping.

       Fill in the  identifying  information at the top of the worksheet.

       Next to the "TANK IDENTIFICATION" box are empty vertical columns.
       Each column represents one tank—consistently enter all information
       on that one tank in the same vertical column.  NOTE:  Once  you
       have filled in the tank identification boxes,  make copies of the
       worksheet so you won't  have to repeatedly enter  the  same
       information.

 USE GOOD STICKING PRACTICES:  Slowly lower the gauge stick to the
 tank's bottom. Let the stick gently touch the bottom, then quickly bring it
 back up. Read the depth of fuel indicated by the wet mark to the closest
 Vs inch division on the stick.  Use of fuel-finding paste will make your stick
 readings more  accurate.

      Write your measurement in the box labeled "END STICK INCHES" for
      the tank you measured.

NOTE:  If your tank is equipped with an automatic tank gauge (ATG), you
may record the inches of product and gallons of product directly from the
ATG's printed  tape or simply staple the tape with this information to the
worksheet.
                                            -6-

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Step 2 —Record The Amount Pumped
At the same time you measure the tank contents (Step 1), you must record
on the DAILY INVENTORY WORKSHEET the amount of fuel pumped. No fuel can
be added or removed from the tank  while you are sticking the  tank and
recording the amount pumped.

      Locate the box labeled "AMOUNT PUMPED" on the  left side of the
      worksheet. Copy the numbers from each dispenser's totalizer onto
      the worksheet. Be very careful that you write all the meter readings
      for a tank in the same column.  You may have several dispensers
      and  totalizers for one tank, so  the worksheet provides  boxes  in
      which you can enter several readings in any order.

      Add up  the totalizer meter readings in each column and write the
      result in the box labeled "TODAY'S SUM OF TOTALIZERS."

      Find the last DAILY INVENTORY WORKSHEET you  completed.  Copy
      "TODAY'S SUM OF TOTALIZERS" from that worksheet into the "Previous
      Day's Sum of Totalizers" box of the worksheet you are working on
      today.

      On today's worksheet, subtract "Previous Day's Sum of Totalizers"
      from "TODAY'S SUM OF TOTALIZERS" and write the result in  the box
      labeled "AMOUNT PUMPED TODAY."

You may have an alternative to reading totalizers.  If you  have a self-
service fueling  operation where the cashier can authorize fuel sales from
inside the facility, you can probably print out a daily report that gives you
the total sales for each type  of fuel.  NOTE:   You can use the sales
volumes from this report instead of reading your totalizer meters only if no
fuel sales are made between the time you print the report from the cash
register and the time you measure your tanks (Step 1).

      If you are using cash register reports to record the amount  pumped,
      enter the amount of each type of fuel pumped  in the box labeled
      "AMOUNT PUMPED TODAY" or staple the printout to the worksheet.
// you pumped fuel
through a dispenser
and back into a tank,
for example during a
test subtract the
number of gallons
you pumped from
"AMOUNT PUMPED
TODAY."
                                      -7-

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                       Step 3 —Record Fuel Deliveries
                       You must check how much fuel has been delivered every time any amount
                       of fuel is delivered to your tank.  NOTE:  You should not pump any fuel
                       during the time it takes to do items "I" and "J" below.

                       Before the delivery begins, the liquid level in the tank must be  measured.
                       Always use good sticking practices: slowly lower the gauge stick, gently
                       touch the stick to the bottom of the tank, then quickly bring the stick back
                       up. Read the depth of fuel indicated by the wet mark to the nearest Va inch
                       division on the stick,
                             Write your measurement in the box labeled
                             Delivery" for each tank you measured.
                                         'Inches of Fuel Before
An automatic tank
gauge (A TGI can
usually print a delivery
report.  If your tank
has an ATG that
prints such a report,
you may simply staple
the A TG rs deffvery
report to the DAILY
INVENTORY WORKSHEET.
                       The delivery person can now deliver fuel into the tank. After the delivery,
                       wait at least 5 minutes for the fuel level in the tank to stabilize, and then
                       measure again as described above.
Record fuel level in the box labeled "Inches of Fuel After Delivery."

Using your tank chart with Vs inch readings, convert both delivery
readings to the correct number of gallons.  Record these numbers in
the boxes labeled "Gallons of Fuel Before Delivery" and "Gallons of
Fuel After Delivery." (If necessary, see page 9 on converting inches
into gallons.)

Subtract  "Gallons of Fuel Before Delivery" from "Gallons of Fuel
After  Delivery." Record the result in the box labeled "GALLONS
DELIVERED  (STICK)."
                       Now look at the  delivery  receipt and find  the volume of each type of
                       product that was  delivered.  If two volumes are given, one labeled "net"
                       and the other "gross," use the gross gallons as the volume of product
                       delivered.

                             For each type of fuel delivered, copy the gross gallons delivered from
                             the delivery receipt  onto the worksheet in  the box labeled "GROSS
                             GALLONS DELIVERED (RECEIPT)."  The gallons in items "L" and "M"
                             should roughly match.  If they  don't,  contact your supplier.
                                              -8-

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Using Tank Charts Without Ve Inch  Conversions

If your tank chart does not list direct conversions from inches to gallons for
overy Va inch, then you must do the additional math described below every
time you stick your tank.

The easiest way to explain this procedure is with an example.  Let's say
you have a stick reading of 43% inches and you need to figure how many
gallons are in your tank.
   1
Look on your tank chart and find the inch measurements that are
just above and below your stick reading and write down the number
of gallons for these inch readings.  Subtract the gallon readings to
find the difference between the two readings:
      Chart reading at 44 inches:
      Chart reading at 43 inches:
                                     3,585 gallons
                                     3,480 gallons
      Difference:
                                       105 gallons
   2. Dividing 105 by 8 will give you the number of gallons per 1/a inch,
      which in this example is 13.  (More exactly it is 13.125, but do
      round off the number to the nearest whole number.) Because your
      fraction is %, multiply 13 gallons by  3, which gives you 39 gallons
      as the volume represented by % inch.

      CAUTION:  The gallons represented  by each VB inch will vary from
      top to  bottom  of the tank and  must be calculated for  each
      conversion.

   3. Take the number of gallons you have just calculated and  add it to
      the inch reading just below your actual stick reading:
      Chart reading at 43 inches:
      Gallons at % inch:
                                     3,480 gallons
                                     +  39 gallons
      Sum:                                3,519 gallons

Thus, your stick reading of 43% inches converts to 3,519 gallons.

NOTE: If your tank chart is in half or quarter inches, you must still use this
procedure so that your gallon readings are accurate to Va inch.

After all of  this math, you can see why it pays to have the correct tank
chart that indicates gallons for each VB inch.
                                      -9-

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                       Step 4—Calculate Daily  Changes In Inventory
Use the sample
"MONTHLY INVENTORY
RECORD" from the last
two pages of the
booklet to see where
you put the
information from
tetters "N" through
"Z" in the following
directions.
In this step, you will copy information from the DAILY INVENTORY WORKSHEET
onto the MONTHLY  INVENTORY RECORD.  You will then do some math  to
determine your daily inventory.  You need one MONTHLY INVENTORY RECORD
for each tank that you have.

As you go through the following directions, refer to the sample MONTHLY
INVENTORY RECORD you will find on the reverse side of the DAILY INVENTORY
WORKSHEET sample you have already been using.  For easy reference, the
sample is on a perforated page so you can tear it out and keep it handy  as
you read through the directions. Also, near the back of the booklet is a
"master copy" on a perforated page you can tear out to make copies of the
MONTHLY INVENTORY RECORD for your recordkeeping.

      Fill in the identifying information at the top of the MONTHLY INVENTORY
      RECORD.

If this is the very first day of your inventory recordkeeping, convert the
"END STICK INCHES" from the DAILY WORKSHEET into gallons and enter on the
MONTHLY RECORD under "END STICK INVENTORY (GALLONS)" for that startinc
date. (If necessary, see page 9 on converting inches into gallons.) This is
all you can do today. Starting tomorrow, follow all of the instructions listed
below.

      Find the line in the left column on the MONTHLY RECORD with today's
      date  listed.   Copy the  previous day's  "END  STICK  INVENTORY
      (GALLONS)" number into the box for today's "START STICK INVENTORY
      (GALLONS)."

      Enter  the amount  of fuel  delivered  from the  DAILY  INVENTORY
      WORKSHEET. If you were NOT pumping fuel during the time when the
      delivery was taking place, then use the "GALLONS DELIVERED (STICK)"
      number.  However, if you had to pump fuel while the delivery was
      taking  place, then use the  "GROSS GALLONS DELIVERED  (RECEIPT)"
      number as your delivery amount.

  [•1 Copy the "AMOUNT PUMPED TODAY" number from the DAILY INVENTORY
      WORKSHEET  into the  "GALLONS PUMPED"  column  of the MONTHLY
      INVENTORY RECORD.
                                           -10-

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      Add the "START  STICK  INVENTORY  (GALLONS)"  and the "GALLONS
      DELIVERED"  columns; then subtract the "GALLONS PUMPED" column.
      Enter the result in the column labeled "BOOK INVENTORY (GALLONS)."

      Copy the "END STICK INCHES" number from the DAILY WORKSHEET into
      the column labeled  "END STICK INVENTORY (INCHES)" on the MONTHLY
      RECORD.  Convert inches into  gallons and enter  the  result  in the
      column on  the MONTHLY  RECORD  labeled "END  STICK INVENTORY
      (GALLONS)."   (If necessary, see page 9 on converting inches into
      gallons.)

      Subtract the "BOOK INVENTORY (GALLONS)"   from  the "END  STICK
      INVENTORY (GALLONS)." Enter the difference into today's "DAILY OVER
      OR SHORT" box.  This number will usually  be  a positive or negative
      number (only rarely  will it be zero).

      Enter your initials to show who entered today's information.

At least once each month, you must  also  measure for water in the tank.
Smear water-finding paste  on the bottom  few inches of the  gauge  stick.
Open the fill pipe and slowly lower the stick to the tank's bottom.  Hold the
stick on the bottom for 10 seconds for gasoline  (30 seconds for diesel).
Then remove  the stick.  If there is water  in the  bottom of the tank, the
water-finding  paste will change color. Read the depth of water indicated by
the line where the water-finding paste has  changed color to the closest Va
inch division on the stick.   Do not use this stick reading to  measure the
amount of fuel in the tank,  because the fuel will creep up the stick and will
give you an inaccurate reading.

      If you checked the tank for water today, enter the number of inches
      of water in the tank on the line under  "Facility Name" at the top of
      the monthly record.  If there is no  water  present, enter a zero to
      indicate that you in  fact checked for water but found none.  If you
      find more than 1 inch of water,  you should arrange for its immediate
      removal, notify the  product supplier,  and conduct further tests to
      ensure that the tank is not leaking.
GOOD ADVICE: If
you are "over" for 5
days in a row (or
"under" for 6 days in
a row), you should
check for problems
with your math and
your UST.
                                      -11-

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NOTE: Keep your
inventory control
records on file for at
least 1 year, Your
state, however, may
have different rules
about when you have
to report a teak or
how long you must
keep the inventory
records.  Be sure you
know the rules that
apply to you.
                       Step  5— Calculate Monthly  Changes In Inventory

                       At  the  end  of each  month, follow the directions below to see if the
                       difference between "stick" and "book" inventory indicates a possible leak.

                            Add all of the  month's "GALLONS  PUMPED" numbers and write this
                            total at the bottom of the column in the box labeled "TOTAL GALLONS
                            PUMPED."

                            Add all the month's "DAILY OVER OR SHORT" numbers:   pay careful
                            attention to positive and negative numbers to get an accurate total.
                            For example, adding +4 and +3 and -2 should equal +5. Enter the
                            total at the bottom of the column in the box labeled "TOTAL GALLONS
                            OVER OR SHORT."
Fill  out  the  "LEAK CHECK" line  at  the  bottom of the MONTHLY
INVENTORY RECORD 3S follows:

•     Take the "TOTAL GALLONS PUMPED" number and drop the last
      two digits to get 1 % (for example: 6594 becomes 65).

•     Add 130 (for example:  65 + 130 = 195).

Enter the result of this calculation at the end of the "LEAK CHECK"
line.  This number  is the maximum change in inventory allowed by
federal regulations (1% of throughput plus 130  gallons).

At the bottom of the MONTHLY INVENTORY  RECORD, circle "YES" or
"NO"  to show whether your "TOTAL GALLONS OVER OR SHORT"
number  is LARGER than the "LEAK CHECK" number you identified in
the previous item.  Even if your "TOTAL GALLONS OVER OR SHORT" is
a negative number, treat it as a positive number for the purpose of
this comparison.  For example, -74 would become +74.

If you circle "YES" for 2 months in a row, you must notify your
regulatory agency as soon as possible (usually within 24 hours) that
your tank may  be leaking.
                                           -12-
                              U.S. GOVERNMENT PRINTING OFFICE:  1994 - 515-003 - 1302/01025

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 DAILY INVENTORY WORKSHEET
FACILITY NAME:




  YOUR NAME:




     DATE:
TANK IDENTIFICATION |
Type of Fuel
	 —
Tank Size in Gallons
END STICK INCHES
AMOUNT PUMPED
Totalizer Reading
Totalizer Reading
Totalizer Reading
Totalizer Reading
Totalizer Reading
Totalizer Reading
Totalizer Reading
Totalizer Reading
TODAY'S SUM OF TOTALIZERS
Previous Day's Sum of Totalizers
AMOUNT PUMPED TODAY
DELIVERY RECORD
Inches of Fuel Before Delivery
Gallons of Fuel Before Delivery
(from tank chart)
Inches of Fuel After Delivery
Gallons of Fuel After Delivery
(from tank chart)
GALLONS DELIVERED (STICK)
[Gallons "After" - Gallons "Before")
GROSS GALLONS DELIVERED
(RECEIPT)



























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-------
                                             MONTHLY INVENTORY RECORD
                               TANK IDENTIFICATION & TYPE OF FUEL:
                                                              MONTH/YEAR :
                               FACILITY NAME:
                               DATE OF WATER CHECK:
                                                         LEVEL OF WATER (INCHES):
DATE
1
2
3
4
5
6
7
8
9
10
It
12
13
14
15
16
17
18
19
20
21
22
23
24
2S
26
27
28
29
30
31
START STICK BOOK
INVENTORY GALLONS GALLONS INVENTORY
(GALLONS) DELIVERED PUMPED (GALLONS)
(+> (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
( + ) (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
( + ) (-) (=)
( + ) (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
(+) (-) (=)
END STICK INVENTORY
(INCHES) | (GALLONS)






























































TOTAL GALLONS PUMPED > 1 1 TOTAL GALLONS OVER OR SHORT >
DAILY OVER ( + )
OR SHORT (-)
["End" - "Book"]
































INITIALS
































    DROP THE LAST 2 DIGITS from the
    PUMPED number and enter on the
         LEAK CHECK:
TOTAL GALLONS
line below
                            Compare these
                     130
numbers
	gallons
Is "TOTAL GALLONS OVER OR SHORT" LARGER than "LEAK CHECK" result? YES  NO   (circle one)
     If answer is "YES" for 2 MONTHS IN A ROW, notify regulatory agency as soon as possible.
     KEEP THIS PIECE OF PAPER ON FILE FOR AT LEAST  1  YEAR

-------
                                                 DAILY INVENTORY WORKSHEET

                                             3 FACILITY NAME:   l^AST
                                                  YOUR NAME:  x7l//W  J>0 £•

                                                       DATE:
 TANK IDENTIFICATION
                                       1
                           v-
Type of Fuel
                                  K&a  (JUL
Tank Size in Gallons
Totalizer Reading
Totalizer Reading
Totalizer Reading
Totalizer Reading
Totalizer Reading
Totalizer Reading
TODAY'S SUM OF TOTALIZERS
                                               tietr
Previous Day's Sum of Totalizers
                                  If I? I
AMOUNT PUMPED TODAY
                                    12-SV
 DELIVERY RECORD
I5-S5-

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                                               MONTHLY INVENTORY RECORD
                                TANK IDENTIFICATION & TYPE OF FUEL:  ty  M IP&JM&&  t/A/*'
                                                          MONTH/YEAR
                                                                           :   V /
                                FACILITY NAME:
                         DATE OF WATER CHECK:
                                                            LEVEL OF WATER (INCHES):
 DATE
      START STICK
       INVENTORY
       (GALLONS)
          GALLONS
          DELIVERED
GALLONS
 PUMPED
             BOOK
           INVENTORY
           (GALLONS)
                                                END STICK INVENTORY
                                                (INCHES)
                                                        (GALLONS)
DAILY OVER ( + )
 OR SHORT (-)
["End" - "Book"]
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              (+)
  22
                                                            f
  23
-)   f?  ( =
                                       KSYt.
                                         -t 7-
  24
                  -)  31 I   <-
  25
              ( + )
                  -)  239  < =
  26
  27
                  -)  Z6V  <-
  28
P2?t>
                             W9I
  29
  30
              (+)
  31
   TOTAL GALLONS PUMPED >
                                     TOTAL GALLONS OVER OR SHORT >
    DROP THE LAST 2 DIGITS from the I TOTAL GALLONS
    PUMPED number and enter on the  * line below
               CHECK:        &5
                                                   Compare these
                                            130
                                             numbers
                                                 gallons
Is "TOTAL GALLONS OVER OR SHORT" LARGER than "LEAK CHECK" result?  YES /NO/  (circle one)|

     If answer is "YES" for 2 MONTHS IN A ROW, notify regulatory agency as soon as possible.

      KEEP THIS PIECE OF PAPER ON FILE FOR AT LEAST 1 YEAR

-------
> > > Copy and post this reminder where employees
      who measure tanks can see it!< < <
 GET GOOD INVENTORY CONTROL
          MEASUREMENTS!

 • Measure each tank every operating day

 • Use gauge sticks that are
    t/ marked to the Va inch
    i/ not cut off or worn off at the "0" end
    %/ varnished and not warped

 • Measure through the same drop tube each time

 • Use good sticking practices
    S SLOWLY lower stick
    S GENTLY touch stick on tank bottom
    ./ QUICKLY pull stick out

 • Measure just before each delivery

 • Wait at least 5 minutes after delivery,
  then measure again

 • Read and record totalizer meters carefully

 • Check for water at least once a month
  using water-finding paste

-------
Developed in cooperation with.
      Fiberglass
      Petroleum Tank & Pipe Institute
              INTERNATIONAL ASSOCIATION OF TANK TESTING PROFESSIONALS
      iPEIj
      "f UM EQUIPMENT INS%
                     PETROLEUM
                     MARKETERS
                     ASSOCIATION1*
                     AMERICA
      service STATION DCALERS OF AMERICA
       [ CM-MA • •  SOCIETY OF INDEPENDENT
       [SIGMAJI  GASOLINE: MARKETERS
               OF AMERICA
            n
Steel
Tank
Institute

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