**Number range CHAPTERSection 2 --- Release Detection**

**What Is Release Detection?**

![](media/image1.png){width="3.7680555555555557in"
height="2.901388888888889in"}

You must be able to determine at least every 30 days whether or not your
tank and piping are leaking by using proper release detection methods.

Your release detection method must be able to detect a release from any
portion of the tank and connected underground piping that routinely
contains product.

Release detection must be installed, calibrated, operated, and
maintained according to the manufacturer's instructions.

**Do You Know If Your Release Detection Is Certified To Work At Your UST
Site?**

Release detection must meet specific performance requirements. You
should have documentation from the manufacturer, vendor, or installer of
your release detection equipment showing certification that it can meet
performance requirements.

Some vendors or manufacturers supply their own certification, but more
often an impartial "third party" is paid to test the release detection
equipment and certify that performance requirements are met. An
independent workgroup of release detection experts periodically
evaluates all third-party certifications, thus providing a free and
reliable list of evaluations of third-party certifications for various
release detection equipment. Frequently updated, this list is available
on the Internet at [**http://www.nwglde.org/**](http://www.nwglde.org/)
(the publication's title is ***List Of Leak Detection Evaluations For
Underground Storage Tank Systems***). If you can't find the
certification anywhere, contact your state regulatory agency (see
Section 7 for contact information).

By checking the certification, you may discover the method you use has
not been approved for use with the type of tank or piping you have or
the type of product being stored. For example, you may learn from the
certification that your method won't work with manifolded tanks, certain
products, high throughput, or with certain tank sizes.

That's why you need to make sure your release detection method has clear
certification that it will work effectively at your site with its
specific characteristics.

**How Can You Make Sure Your Leak Detection Method Is Working At Your
UST Site?**

If you don't understand your O&M responsibilities and don't know what
O&M tasks you must routinely perform, you may allow your UST site to
become contaminated --- then you will face cleanup costs and associated
problems.

To avoid these problems use the checklists on the following pages that
describe each type of leak detection method, discuss actions necessary
for proper O&M, and note the records you should keep.

Locate the methods of release detection you are using at your facility,
review these pages, and periodically complete the checklist. You might
want to copy a page first and periodically fill out copies later.

If you have questions about your release detection system, review your
owner's manual or call the vendor of your system. Your state or local
regulatory agency may be able to provide assistance as well.

You will find leak detection recordkeeping forms in the following pages
of this Section. Keeping these records increases the likelihood that you
are conducting good O&M and providing effective release detection at
your UST site. For example, see page 20 for

a 30-Day Release Detection Monitoring Record.

If you ever suspect or confirm a leak, refer to Section 3. **Never
ignore leak detection alarms or failed leak detection tests. Treat them
as potential leaks**!

+-----------+----------------------------------------------------------+
| **        |                                                          |
| Automatic |                                                          |
| Tank      |                                                          |
| Gauging   |                                                          |
| (ATG)     |                                                          |
| Systems   |                                                          |
| (for      |                                                          |
| tanks     |                                                          |
| only)**   |                                                          |
+-----------+----------------------------------------------------------+
| **De      | **An automatic tank gauging (ATG) system consists of a   |
| scription | probe permanently installed in a tank and wired to a     |
| Of        | monitor to provide information on product level and      |
| Release   | temperature. ATG systems automatically calculate the     |
| De        | changes in product volume that can indicate a leaking    |
| tection** | tank.**                                                  |
+-----------+----------------------------------------------------------+
| **Have    | -   **Make sure your ATG system is certified for the     |
| Cert      |     types of tanks and stored contents on which the ATG  |
| ification |     system is used.** Most manufacturers have their leak |
| For Your  |     detection devices tested and certified by a third    |
| Release   |     party to verify that their equipment meets specific  |
| Detection |     performance requirements set by regulatory agencies. |
| Method**  |     If you don\'t have certified performance claims,     |
|           |     have the manufacturer provide them to you.           |
+-----------+----------------------------------------------------------+
| **Perform | -   **Use your ATG system to test for leaks at least     |
| These**   |     every 30 days.** Most systems are already programmed |
|           |     by the installer to run a leak test periodically. If |
| **O&M**   |     your system is not programmed to automatically       |
|           |     conduct the leak test, refer to your ATG system      |
| **        |     manual to identify which buttons to push to conduct  |
| Actions** |     the leak test. Testing more often than monthly can   |
|           |     catch leaks sooner and reduce cleanup costs and      |
|           |     problems.                                            |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **Make sure that the amount of product in your tank  |
|           |     is sufficient to run the ATG leak test.** The tank   |
|           |     must contain a minimum amount of product to perform  |
|           |     a valid leak detection test. One source for          |
|           |     determining that minimum amount is the certification |
|           |     for your leak detection equipment (as discussed      |
|           |     above).                                              |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **Frequently test your ATG system according to the   |
|           |     manufacturer's instructions to make sure it is       |
|           |     working properly.** Don't assume that your release   |
|           |     detection system is working and never needs          |
|           |     checking. Read your owner's manual, run the          |
|           |     appropriate tests, and see if your ATG system is set |
|           |     up and working properly. Most ATG systems have a     |
|           |     test or self-diagnosis mode that can easily and      |
|           |     routinely run these checks.                          |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **If your ATG ever fails a test or indicates a       |
|           |     release, see Section 3 of this booklet for           |
|           |     information on what to do next.**                    |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **Periodically have a qualified UST contractor, such |
|           |     as the vendor who installed your ATG, service all    |
|           |     the ATG system components according to the           |
|           |     manufacturer's service instructions.** Tank probes   |
|           |     and other components can wear out and must be        |
|           |     checked periodically. Many vendors recommend or      |
|           |     require this maintenance activity at least annually. |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **Check your ATG system owner's manual often to      |
|           |     answer questions and to make sure you know the ATG's |
|           |     operation and maintenance procedures.** Call the ATG |
|           |     manufacturer or vendor for a copy of the owner's     |
|           |     manual if you don't have one.                        |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **Make sure employees who run, monitor, or maintain  |
|           |     the release detection system know exactly what they  |
|           |     have to do and to whom to report problems.** Develop |
|           |     and maintain regular training programs for all       |
|           |     employees.                                           |
+-----------+----------------------------------------------------------+
| **Keep    | -   **Keep results of your ATG system tests for at least |
| These O&M |     1 year.** Your monitoring equipment may provide      |
| Records** |     printouts that can be used as records. Unless you    |
|           |     are recording actual release detection results at    |
|           |     least every 30 days and maintaining records for at   |
|           |     least 1 year, you are not doing leak detection       |
|           |     right.                                               |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **Keep all records of calibration, maintenance, and  |
|           |     repair of your release detection equipment for at    |
|           |     least 1 year.**                                      |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **Keep all performance claims supplied by the        |
|           |     installer, vendor, or manufacturer for at least 5    |
|           |     years.** These records include the certification of  |
|           |     your leak detection equipment described above.       |
+-----------+----------------------------------------------------------+

+-----------+----------------------------------------------------------+
| **        |                                                          |
| Secondary |                                                          |
| Co        |                                                          |
| ntainment |                                                          |
| With      |                                                          |
| Int       |                                                          |
| erstitial |                                                          |
| Mon       |                                                          |
| itoring** |                                                          |
|           |                                                          |
| **(for    |                                                          |
| tanks &   |                                                          |
| piping)** |                                                          |
+-----------+----------------------------------------------------------+
| **De      | **Secondary containment is a barrier between the portion |
| scription | of an UST system that contains product and the outside   |
| Of        | environment. Examples of secondary containment include   |
| Release   | an outer tank or piping wall, an excavation liner, and a |
| De        | bladder inside an UST. The area between the inner and    |
| tection** | outer barriers --- called the interstitial space --- is  |
|           | monitored manually or automatically for evidence of a    |
|           | leak.**                                                  |
+-----------+----------------------------------------------------------+
| **Have    | -   **Make sure your interstitial monitoring equipment   |
| Cert      |     and any probes are certified for the types of tanks, |
| ification |     piping, and stored contents on which the release     |
| For Your  |     detection system is used.** Most manufacturers have  |
| Release   |     their leak detection devices tested and certified by |
| Detection |     a third party to verify that their equipment meets   |
| Method**  |     specific performance requirements set by regulatory  |
|           |     agencies. If you don\'t have certified performance   |
|           |     claims, have the manufacturer provide them to you.   |
+-----------+----------------------------------------------------------+
| **Perform | -   **Use your release detection system to test for      |
| These**   |     leaks at least every 30 days.** Testing more often   |
|           |     than monthly can catch leaks sooner and reduce       |
| **O&M**   |     cleanup costs and problems.                          |
|           |                                                          |
| **        | ```{=html}                                               |
| Actions** | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **Frequently test your release detection system      |
|           |     according to the manufacturer's instructions to make |
|           |     sure it is working properly.** Don't assume that     |
|           |     your release detection system is working and never   |
|           |     needs checking. Read your owner's manual, run the    |
|           |     appropriate tests, and see if your system is set up  |
|           |     and working properly. Some interstitial monitoring   |
|           |     systems have a test or self-diagnosis mode that can  |
|           |     easily and routinely run these checks.               |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **If your interstitial monitoring ever fails a test  |
|           |     or indicates a release, see Section 3 of this        |
|           |     booklet for information on what to do next.**        |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **Periodically have a qualified UST contractor, such |
|           |     as the vendor who installed your release detection   |
|           |     system, service all the system components according  |
|           |     to the manufacturer's service instructions.** Tank   |
|           |     probes and other components can wear out and must be |
|           |     checked periodically. Many vendors recommend or      |
|           |     require this maintenance activity at least annually. |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **Keep interstitial monitoring access ports clearly  |
|           |     marked and secured.**                                |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **Check your interstitial monitoring system owner's  |
|           |     manual often to answer questions and to make sure    |
|           |     you know the system's O&M procedures.** Call the     |
|           |     system's vendor or manufacturer for a copy of the    |
|           |     owner's manual if you don't have one.                |
|           |                                                          |
|           | -   **Make sure employees who run, monitor, or maintain  |
|           |     the release detection system know exactly what they  |
|           |     have to do and to whom to report problems.** Develop |
|           |     and maintain regular training programs for all       |
|           |     employees.                                           |
+-----------+----------------------------------------------------------+
| **Keep**  | -   **Keep results of your release detection system      |
|           |     tests for at least 1 year.** Your monitoring         |
| **These** |     equipment may provide printouts that can be used as  |
|           |     records. Unless you are recording actual release     |
| **O&M     |     detection results at least every 30 days and         |
| Records** |     maintaining records for at least 1 year, you are not |
|           |     doing leak detection right.                          |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **Keep all records of calibration, maintenance, and  |
|           |     repair of your release detection equipment for at    |
|           |     least 1 year.**                                      |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **Keep all performance claims supplied by the        |
|           |     installer, vendor, or manufacturer for at least 5    |
|           |     years.** These records include the certification of  |
|           |     your leak detection equipment described above.       |
+-----------+----------------------------------------------------------+

+------------+---------------------------------------------------------+
| **S        |                                                         |
| tatistical |                                                         |
| Inventory  |                                                         |
| Reco       |                                                         |
| nciliation |                                                         |
| (SIR) (for |                                                         |
| tanks &    |                                                         |
| piping)**  |                                                         |
+------------+---------------------------------------------------------+
| **D        | **SIR is typically a method in which a trained          |
| escription | professional uses sophisticated computer software to    |
| Of Release | conduct a statistical analysis of inventory, delivery,  |
| D          | and dispensing data. You must supply the professional   |
| etection** | with data every month. There are also computer programs |
|            | that enable an owner/operator to perform SIR. In either |
|            | case, the result of the analysis may be pass,           |
|            | inconclusive, or fail.**                                |
+------------+---------------------------------------------------------+
| **Have     | -   **Make sure your SIR vendor's methodology is        |
| Cer        |     certified for the types of tanks, piping, and       |
| tification |     product on which you use SIR.** Most vendors have   |
| For Your   |     their leak detection methodology tested and         |
| Release    |     certified by a third party to verify that their     |
| Detection  |     equipment meets specific performance requirements   |
| Method**   |     set by regulatory agencies. If you don\'t have      |
|            |     certified performance claims, have the vendor       |
|            |     provide them to you**.**                            |
+------------+---------------------------------------------------------+
| **Perform  | -   **Supply daily inventory data to your SIR vendor    |
| These**    |     (as required) at least every 30 days.** The vendor  |
|            |     will provide you with your leak detection results   |
| **O&M**    |     after the statistical analysis is completed.        |
|            |     Otherwise, use your computer software at least      |
| *          |     every 30 days to test your tank for leaks.          |
| *Actions** |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **See Section 3 of this manual if your UST system   |
|            |     fails a leak test.**                                |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **If you receive an inconclusive result, you must   |
|            |     work with your SIR vendor to correct the problem    |
|            |     and document the results of the investigation.** An |
|            |     inconclusive result means that you have not         |
|            |     performed leak detection for that month. If you     |
|            |     cannot resolve the problem, treat the inconclusive  |
|            |     result as a suspected release and refer to Section  |
|            |     3.                                                  |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **If you use an ATG system to gather data for the   |
|            |     SIR vendor or your software, periodically have a    |
|            |     qualified UST contractor, such as the vendor who    |
|            |     installed your ATG, service all the ATG system      |
|            |     components according to the manufacturer's service  |
|            |     instructions.** Tank probes and other components    |
|            |     can wear out and must be checked periodically. Many |
|            |     vendors recommend or require this maintenance       |
|            |     activity at least annually. Do this according to    |
|            |     manufacturer's instructions. See the checklist for  |
|            |     ATG systems on page 7.                              |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **If you stick your tank to gather data for the SIR |
|            |     vendor or your software, make sure your stick can   |
|            |     measure to one-eighth of an inch and can measure    |
|            |     the level of product over the full range of the     |
|            |     tank's height.** You should check your measuring    |
|            |     stick periodically to make sure you can read the    |
|            |     markings and numbers and that the bottom of the     |
|            |     stick is not worn.                                  |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Make sure employees who run, monitor, or maintain |
|            |     the release detection system know exactly what they |
|            |     have to do and to whom to report problems.**        |
|            |     Develop and maintain regular training programs for  |
|            |     all employees.                                      |
+------------+---------------------------------------------------------+
| **Keep**   | -   **Keep results of your SIR tests for at least 1     |
|            |     year.** Unless you are keeping records of the       |
| **These**  |     30-day release detection results and maintaining    |
|            |     those records for at least 1 year, you are not      |
| **O&M**    |     doing leak detection right.                         |
|            |                                                         |
| *          | ```{=html}                                              |
| *Records** | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Keep all vendor performance claims for at least 5 |
|            |     years.** This includes the certification of the SIR |
|            |     method discussed above.                             |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **If you use an ATG system, keep all records of     |
|            |     calibration, maintenance, and repair of your        |
|            |     release detection equipment for at least 1 year.**  |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Keep the records of investigations conducted as a |
|            |     result of any monthly monitoring conclusion of      |
|            |     inconclusive or fail for at least 1 year.** This    |
|            |     may include the results of a tightness test         |
|            |     performed during the investigation or a             |
|            |     re-evaluation based on corrected delivery or        |
|            |     dispenser data.                                     |
+------------+---------------------------------------------------------+

+------------+---------------------------------------------------------+
| **Vapor    |                                                         |
| Monitoring |                                                         |
| (for tanks |                                                         |
| &          |                                                         |
| piping)**  |                                                         |
+------------+---------------------------------------------------------+
| **Des      | **Vapor monitoring measures product vapors in the soil  |
| cription** | at the UST site to check for a leak. A site assessment  |
|            | must determine the number and placement of monitoring   |
| **Of       | wells that make sure a release is detected. NOTE: vapor |
| Release    | monitors will not work well with substances that do not |
| D          | easily vaporize (such as diesel fuel).**                |
| etection** |                                                         |
+------------+---------------------------------------------------------+
| **Have     | -   **Make sure your vapor monitoring equipment is      |
| Cer        |     certified for the types of stored contents on which |
| tification |     the release detection system is used.** Most        |
| For Your   |     manufacturers have their leak detection devices     |
| Release    |     tested and certified by a third party to verify     |
| Detection  |     that their equipment meets specific performance     |
| Method**   |     requirements set by regulatory agencies. If you     |
|            |     don\'t have certified performance claims, have the  |
|            |     manufacturer provide them to you.                   |
+------------+---------------------------------------------------------+
| *          | -   **Use your release detection system to test for     |
| *Perform** |     leaks at least every 30 days.** Testing more often  |
|            |     than monthly can catch leaks sooner and reduce      |
| **These**  |     cleanup costs and problems. **Be sure you check all |
|            |     of your vapor monitoring wells.**                   |
| **O&M**    |                                                         |
|            | ```{=html}                                              |
| *          | <!-- -->                                                |
| *Actions** | ```                                                     |
|            | -   **See Section 3 of this manual if your UST system   |
|            |     fails a leak test.**                                |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Frequently test your release detection system     |
|            |     according to the manufacturer's instructions to     |
|            |     make sure it is working properly.** Don't assume    |
|            |     that your release detection system is working and   |
|            |     never needs checking. Some electronic vapor         |
|            |     monitoring systems have a test or self-diagnosis    |
|            |     mode. If you have components (such as monitoring    |
|            |     equipment, probes or sensors) for your vapor        |
|            |     monitoring system, read your manual and test your   |
|            |     equipment to see if it is working properly.         |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Periodically have a qualified UST contractor,     |
|            |     such as the vendor who installed your release       |
|            |     detection system, service all the system components |
|            |     according to the manufacturer's service             |
|            |     instructions.** Probes and other components can     |
|            |     wear out and must be checked periodically. Many     |
|            |     vendors recommend or require this maintenance       |
|            |     activity at least annually.                         |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Keep your vapor monitoring wells clearly marked   |
|            |     and secured.**                                      |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Check your vapor monitoring system owner's manual |
|            |     often to answer questions and to make sure you know |
|            |     the system's operation and maintenance              |
|            |     procedures.** Call the system's vendor or           |
|            |     manufacturer for a copy of the owner's manual if    |
|            |     you don't have one.                                 |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Make sure employees who run, monitor, or maintain |
|            |     the release detection system know exactly what they |
|            |     have to do and to whom to report problems.**        |
|            |     Develop and maintain regular training programs for  |
|            |     all employees.                                      |
+------------+---------------------------------------------------------+
| **Keep**   | -   **Keep results of your release detection system     |
|            |     tests for at least 1 year.** Your monitoring        |
| **These**  |     equipment may provide printouts that can be used as |
|            |     records. Unless you are recording actual release    |
| **O&M**    |     detection results at least every 30 days and        |
|            |     maintaining records for at least 1 year, you are    |
| *          |     not doing leak detection right.                     |
| *Records** |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Keep all records of calibration, maintenance, and |
|            |     repair of your release detection equipment for at   |
|            |     least 1 year.**                                     |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Keep all performance claims supplied by the       |
|            |     installer, vendor, or manufacturer for at least 5   |
|            |     years.** These records include the certification of |
|            |     your leak detection equipment described above.      |
+------------+---------------------------------------------------------+

+------------+---------------------------------------------------------+
| **G        |                                                         |
| roundwater |                                                         |
| Monitoring |                                                         |
| (for tanks |                                                         |
| &          |                                                         |
| piping)**  |                                                         |
+------------+---------------------------------------------------------+
| **D        | **Groundwater monitoring looks for the presence of      |
| escription | liquid product floating on the groundwater at the UST   |
| Of Release | site. A site assessment must determine the number and   |
| D          | placement of monitoring wells that make sure a release  |
| etection** | is detected. NOTE: this method cannot be used at sites  |
|            | where groundwater is more than 20 feet below the        |
|            | surface.**                                              |
+------------+---------------------------------------------------------+
| **Have     | -   **Make sure any automated groundwater monitoring    |
| Cer        |     equipment is certified for the types of stored      |
| tification |     contents on which the release detection system is   |
| For Your   |     used.** Most manufacturers have their leak          |
| Release    |     detection devices tested and certified by a third   |
| Detection  |     party to verify that their equipment meets specific |
| Method**   |     performance requirements set by regulatory          |
|            |     agencies. If you don\'t have certified performance  |
|            |     claims, have the manufacturer provide them to you.  |
|            |     (Manual devices such as bailers are not generally   |
|            |     certified.)                                         |
+------------+---------------------------------------------------------+
| **Perform  | -   **Use your release detection system to test for     |
| These**    |     leaks at least every 30 days.** Testing more often  |
|            |     than monthly can catch leaks sooner and reduce      |
| **O&M**    |     cleanup costs and problems. **Be sure you check all |
|            |     of your groundwater monitoring wells.**             |
| *          |                                                         |
| *Actions** | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **See Section 3 of this manual if your UST system   |
|            |     fails a leak test.**                                |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Frequently test your automated release detection  |
|            |     system according to the manufacturer's instructions |
|            |     to make sure it is working properly.** Don't assume |
|            |     that your release detection system is working and   |
|            |     never needs checking. Some electronic groundwater   |
|            |     monitoring systems have a test or self-diagnosis    |
|            |     mode. If you have components (such as monitoring    |
|            |     equipment, probes or sensors) for your groundwater  |
|            |     monitoring system, read your manual and test your   |
|            |     equipment to see if it is working properly. Manual  |
|            |     devices should be periodically checked to make sure |
|            |     they are working properly.                          |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Periodically have a qualified UST contractor,     |
|            |     such as the vendor who installed your release       |
|            |     detection system, service all the system components |
|            |     according to the manufacturer's service             |
|            |     instructions.** Probes and other components can     |
|            |     wear out and must be checked periodically. Many     |
|            |     vendors recommend or require this maintenance       |
|            |     activity at least annually.                         |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Keep your groundwater monitoring wells clearly    |
|            |     marked and secured.**                               |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Check your groundwater monitoring system owner's  |
|            |     manual often to answer questions and to make sure   |
|            |     you know the system's operation and maintenance     |
|            |     procedures.** Call the system's vendor or           |
|            |     manufacturer for a copy of the owner's manual if    |
|            |     you don't have one.                                 |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Make sure employees who run, monitor, or maintain |
|            |     the release detection system know exactly what they |
|            |     have to do and to whom to report problems.**        |
|            |     Develop and maintain regular training programs for  |
|            |     all employees.                                      |
+------------+---------------------------------------------------------+
| **Keep**   | -   **Keep results of your release detection system     |
|            |     tests for at least 1 year.** Your monitoring        |
| **These**  |     equipment may provide printouts that can be used as |
|            |     records. Unless you are recording actual release    |
| **O&M**    |     detection results at least every 30 days and        |
|            |     maintaining records for at least 1 year, you are    |
| *          |     not doing leak detection right.                     |
| *Records** |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Keep all records of calibration, maintenance, and |
|            |     repair of your release detection equipment for at   |
|            |     least 1 year.**                                     |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Keep all performance claims supplied by the       |
|            |     installer, vendor, or manufacturer for at least 5   |
|            |     years.** These records include the certification of |
|            |     your leak detection equipment described above.      |
+------------+---------------------------------------------------------+

+----------+-----------------------------------------------------------+
| **I      |                                                           |
| nventory |                                                           |
| Control  |                                                           |
| And Tank |                                                           |
| T        |                                                           |
| ightness |                                                           |
| Testing  |                                                           |
| (for     |                                                           |
| tanks    |                                                           |
| only)**  |                                                           |
+----------+-----------------------------------------------------------+
| **Des    | **This temporary method combines monthly inventory        |
| cription | control with periodic tank tightness testing. Inventory   |
| Of       | control involves taking measurements of tank contents and |
| Release  | recording the amount of product pumped each operating     |
| Det      | day, measuring and recording tank deliveries, and         |
| ection** | reconciling all this data at least once a month. This     |
|          | combined method also includes tightness testing, a        |
|          | sophisticated test performed by trained professionals.**  |
|          |                                                           |
|          | ***NOTE: This combination method can only be used         |
|          | temporarily for up to 10 years after installing a new UST |
|          | or for up to 10 years after your tank meets the corrosion |
|          | protection requirements.***                               |
+----------+-----------------------------------------------------------+
| **Have   | -   **Make sure your tank tightness testing method is     |
| Certi    |     certified for the types of tanks and stored contents  |
| fication |     on which the tightness test is used.** Most tightness |
| For Your |     test methods are certified by a third party to verify |
| Release  |     that they meet specific performance requirements set  |
| D        |     by regulatory agencies. If you don\'t have certified  |
| etection |     performance claims, have the tightness tester provide |
| Method** |     them to you.                                          |
+----------+-----------------------------------------------------------+
| *        | -   **Take inventory readings and record the numbers at   |
| *Perform |     least each day that product is added to or taken out  |
| These**  |     of the tank.** You may want to use the Daily          |
|          |     Inventory Worksheet provided for you on the next      |
| **O&M**  |     page.                                                 |
|          |                                                           |
| **A      | ```{=html}                                                |
| ctions** | <!-- -->                                                  |
|          | ```                                                       |
|          | -   **Reconcile the fuel deliveries with delivery         |
|          |     receipts by taking inventory readings before and      |
|          |     after each delivery.** Record these readings on a     |
|          |     Daily Inventory Worksheet (see next page).            |
|          |                                                           |
|          | ```{=html}                                                |
|          | <!-- -->                                                  |
|          | ```                                                       |
|          | -   **Reconcile all your data at least every 30 days.**   |
|          |     Use a Monthly Inventory Record (see page 14 for an    |
|          |     example).                                             |
|          |                                                           |
|          | ```{=html}                                                |
|          | <!-- -->                                                  |
|          | ```                                                       |
|          | -   **Have a tank tightness test conducted at least every |
|          |     5 years. This testing needs to be conducted by a      |
|          |     professional trained in performing tank tightness     |
|          |     testing.**                                            |
|          |                                                           |
|          | ```{=html}                                                |
|          | <!-- -->                                                  |
|          | ```                                                       |
|          | -   **See Section 3 of this manual if your tank fails a   |
|          |     tightness test or if fails two consecutive months of  |
|          |     inventory control.**                                  |
|          |                                                           |
|          | ```{=html}                                                |
|          | <!-- -->                                                  |
|          | ```                                                       |
|          | -   **Ensure that your measuring stick can measure to the |
|          |     nearest one-eighth inch and can measure the level of  |
|          |     product over the full range of the tank's height.**   |
|          |     You should check your measuring stick periodically to |
|          |     make sure that you can read the markings and numbers  |
|          |     and that the bottom of the stick is not worn.         |
|          |                                                           |
|          | ```{=html}                                                |
|          | <!-- -->                                                  |
|          | ```                                                       |
|          | -   **Ensure that your product dispenser is calibrated    |
|          |     according to local standards or to an accuracy of 6   |
|          |     cubic inches for every 5 gallons of product           |
|          |     withdrawn.**                                          |
|          |                                                           |
|          | ```{=html}                                                |
|          | <!-- -->                                                  |
|          | ```                                                       |
|          | -   **Measure the water in your tank to the nearest       |
|          |     one-eighth inch at least once a month and record the  |
|          |     results on the reconciliation sheet.** You can use a  |
|          |     paste that changes color when it comes into contact   |
|          |     with water.                                           |
|          |                                                           |
|          | ```{=html}                                                |
|          | <!-- -->                                                  |
|          | ```                                                       |
|          | -   **Make sure employees who run, monitor, or maintain   |
|          |     the release detection system know exactly what they   |
|          |     have to do and to whom to report problems.** Develop  |
|          |     and maintain regular training programs for all        |
|          |     employees.                                            |
+----------+-----------------------------------------------------------+
| **Keep** | -   **Keep results of your release detection system tests |
|          |     for at least 1 year.** Your monitoring equipment may  |
| *        |     provide printouts that can be used as records. Unless |
| *These** |     you are recording actual release detection results at |
|          |     least every 30 days and maintaining records for at    |
| **O&M    |     least 1 year, you are not doing leak detection right. |
| R        |                                                           |
| ecords** | ```{=html}                                                |
|          | <!-- -->                                                  |
|          | ```                                                       |
|          | -   **Keep the results of your most recent tightness      |
|          |     test.**                                               |
|          |                                                           |
|          | ```{=html}                                                |
|          | <!-- -->                                                  |
|          | ```                                                       |
|          | -   **Keep all certification and performance claims for   |
|          |     tank tightness test performed at your UST site for at |
|          |     least 5 years.**                                      |
+----------+-----------------------------------------------------------+

**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)**       |      |         |         |         |         |
+---------------------+------+---------+---------+---------+---------+

**Monthly Inventory Record**

Month/Year :\_\_\_\_\_\_\_/\_\_\_\_\_\_ Tank Identification & Type Of
Fuel:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Facility
Name:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Date Of Water Check: \_\_\_\_\_\_\_\_ Level Of Water
(Inches):\_\_\_\_\_\_

+----+-------+------+------+-------+-------+-------+---------+-----+
| ** | **    | *    | **G  | **B   | **End |       | **Daily | **I |
| Da | Start | *Gal | allo | ook** | Stick |       | Over    | nit |
| te | St    | lons | ns** |       | I     |       | (+) Or  | ial |
| ** | ick** | Del  |      | **I   | nvent |       | Short   | s** |
|    |       | iver | **   | nvent | ory** |       | ()**   |     |
|    | *     | ed** | Pump | ory** |       |       |         |     |
|    | *Inve |      | ed** |       | **(In |       | **\[End |     |
|    | ntory |      |      | **(   | ches) |       |        |     |
|    | (     |      |      | Gallo | \'    |       | B       |     |
|    | Gallo |      |      | ns)** | (     |       | ook\]** |     |
|    | ns)** |      |      |       | Gallo |       |         |     |
|    |       |      |      |       | ns)** |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 1  | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 2  | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 3  | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 4  | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 5  | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 6  | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 7  | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 8  | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 9  | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 7  | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 8  | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 9  | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 10 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 11 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 12 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 13 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 14 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 15 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 16 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 17 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 18 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 19 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 20 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 21 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 22 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 23 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 24 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 25 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 26 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 27 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 28 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 29 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 30 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| 31 | (+)   |      |      |       |       |       |         |     |
|    | (-)   |      |      |       |       |       |         |     |
|    | (=)   |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+
| *  |       |      |      | **    |       |       |         |     |
| *T |       |      |      | Total |       |       |         |     |
| ot |       |      |      | Ga    |       |       |         |     |
| al |       |      |      | llons |       |       |         |     |
| G  |       |      |      | Over  |       |       |         |     |
| al |       |      |      | Or    |       |       |         |     |
| lo |       |      |      | Short |       |       |         |     |
| ns |       |      |      | \>**  |       |       |         |     |
| Pu |       |      |      |       |       |       |         |     |
| mp |       |      |      |       |       |       |         |     |
| ed |       |      |      |       |       |       |         |     |
| \> |       |      |      |       |       |       |         |     |
| ** |       |      |      |       |       |       |         |     |
+----+-------+------+------+-------+-------+-------+---------+-----+

Leak Check: Compare these numbers

Drop the last two digits

from the **Total Gallons**

**Pumped** number and enter here: \_\_\_\_\_\_\_\_\_\_\_\_\_ + 130 =
\_\_\_\_\_\_\_\_\_\_\_\_ gallons

Is the total gallons over or short **larger** than leak check result?
**Yes No** (circle one)

If your answer is Yes for 2 months in a row, **notify the regulatory
agency** as soon as possible.

**Keep This Piece Of Paper On File For At Least 1 Year**

+------------+---------------------------------------------------------+
| **Manual   |                                                         |
| Tank       |                                                         |
| Gauging    |                                                         |
| (for tanks |                                                         |
| 1,000      |                                                         |
| gallons or |                                                         |
| less       |                                                         |
| only)**    |                                                         |
+------------+---------------------------------------------------------+
| **D        | **[This method may be used only for tanks of 1,000      |
| escription | gallons or less capacity]{.underline} meeting certain   |
| Of Release | requirements. These requirements (tank size, tank       |
| D          | dimension, and test time) are found in the manual tank  |
| etection** | gauging record on the next page. Manual tank gauging    |
|            | involves taking your tank out of service for the        |
|            | testing period (at least 36 hours) each week, during    |
|            | which time the contents of the tank are measured twice  |
|            | at the beginning and twice at the end of the test       |
|            | period. The measurements are then compared to weekly    |
|            | and monthly standards to determine if the tank is       |
|            | tight.**                                                |
+------------+---------------------------------------------------------+
| **Have     | **None required.**                                      |
| Cer        |                                                         |
| tification |                                                         |
| For Your   |                                                         |
| Release    |                                                         |
| Detection  |                                                         |
| Method**   |                                                         |
+------------+---------------------------------------------------------+
| **Perform  | -   **Once a week, record two inventory readings at the |
| These**    |     beginning of the test, allow the tank to sit        |
|            |     undisturbed for the time specified in the Manual    |
| **O&M**    |     Tank Gauging Record on the next page, and record    |
|            |     two inventory readings at the end of the test (use  |
| *          |     any form comparable to the one on the following     |
| *Actions** |     page).**                                            |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Reconcile the numbers weekly and record them on a |
|            |     Manual Tank Gauging Record (see the next page).**   |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **See Section 3 of this manual if your tank fails   |
|            |     the weekly standard.**                              |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **At the end of 4 weeks, reconcile your records for |
|            |     the monthly standard and record the result on a     |
|            |     Manual Tank Gauging Record (see the next page).**   |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **See Section 3 of this manual if your tank fails   |
|            |     the monthly standard.**                             |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Ensure that your measuring stick can measure to   |
|            |     the nearest one-eighth inch and can measure the     |
|            |     level of product over the full range of the tank's  |
|            |     height.** You should check your measuring stick     |
|            |     periodically to make sure that you can read the     |
|            |     markings and numbers and that the bottom of the     |
|            |     stick is not worn.                                  |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Make sure employees who run, monitor, or maintain |
|            |     the release detection system know exactly what they |
|            |     have to do and to whom to report problems.**        |
|            |     Develop and maintain regular training programs for  |
|            |     all employees.                                      |
+------------+---------------------------------------------------------+
| **Keep**   | -   **Keep your manual tank gauging records for at      |
|            |     least 1 year.** Unless you are recording actual     |
| **These**  |     release detection results weekly and at least every |
|            |     30 days and maintaining records for at least 1      |
| **O&M**    |     year, you are not doing leak detection right.       |
|            |                                                         |
| *          |                                                         |
| *Records** |                                                         |
+------------+---------------------------------------------------------+

![](media/image2.jpeg){width="8.14236111111111in"
height="10.411805555555556in"}

+-----------+----------------------------------------------------------+
| **Manual  |                                                          |
| Tank      |                                                          |
| Gauging   |                                                          |
| And Tank  |                                                          |
| Tightness |                                                          |
| Testing** |                                                          |
|           |                                                          |
| **(for    |                                                          |
| tanks     |                                                          |
| 2,000     |                                                          |
| gallons   |                                                          |
| or less   |                                                          |
| only)**   |                                                          |
+-----------+----------------------------------------------------------+
| **De      | **This temporary method combines manual tank gauging     |
| scription | with periodic tank tightness testing. [It may be used    |
| Of        | only for tanks of 2,000 gallons or less                  |
| Release   | capacity.]{.underline} Manual tank gauging involves      |
| De        | taking your tank out of service for the testing period   |
| tection** | (at least 36 hours) each week, during which the contents |
|           | of the tank are measured twice at the beginning and      |
|           | twice at the end of the test period. The measurements    |
|           | are then compared to weekly and monthly standards to     |
|           | determine if the tank is tight. This combined method     |
|           | also includes tightness testing, a sophisticated test    |
|           | performed by trained professionals.**                    |
|           |                                                          |
|           | ***NOTE: This combination method can only be used        |
|           | temporarily for up to ten years after installing a new   |
|           | UST or for up to 10 years after your tank meets the      |
|           | corrosion protection requirements.***                    |
+-----------+----------------------------------------------------------+
| **Have    | -   **Make sure your tank tightness testing is certified |
| Cert      |     for the types of tanks and stored contents on which  |
| ification |     the tightness test is used.** Most tightness test    |
| For Your  |     methods are certified by a third party to verify     |
| Release   |     that they meet specific performance requirements set |
| Detection |     by regulatory agencies. If you don\'t have certified |
| Method**  |     performance claims, have the tightness tester        |
|           |     provide them to you.                                 |
+-----------+----------------------------------------------------------+
| **Perform | -   **Once a week, record two inventory readings at the  |
| These**   |     beginning of the test, allow the tank to sit         |
|           |     undisturbed for the time specified in the Manual     |
| **O&M**   |     Tank Gauging Record on page 16, and record two       |
|           |     inventory readings at the end of the test (use any   |
| **        |     form comparable to the one on page 16).**            |
| Actions** |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **Reconcile the numbers weekly and record them on a  |
|           |     Manual Tank Gauging Record (see page 16).**          |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **See Section 3 of this manual if your tank fails    |
|           |     the weekly standard.**                               |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **At the end of 4 weeks, reconcile your records for  |
|           |     the monthly standard and record the result on a      |
|           |     Manual Tank Gauging Record (see page 16).**          |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **See Section 3 of this manual if your tank fails    |
|           |     the monthly standard.**                              |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **Conduct a tank tightness test at least every 5     |
|           |     years.** This testing needs to be conducted by a     |
|           |     professional trained in performing tank tightness    |
|           |     testing.                                             |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **See Section 3 of this manual if your tank fails    |
|           |     the tightness test.**                                |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **Ensure that your measuring stick can measure to    |
|           |     the nearest one-eighth inch and can measure the      |
|           |     level of product over the full range of the tank's   |
|           |     height.** You should check your measuring stick      |
|           |     periodically to make sure that you can read the      |
|           |     markings and numbers and that the bottom of the      |
|           |     stick is not worn.                                   |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **Make sure employees who run, monitor, or maintain  |
|           |     the release detection system know exactly what they  |
|           |     have to do and to whom to report problems.** Develop |
|           |     and maintain regular training programs for all       |
|           |     employees.                                           |
+-----------+----------------------------------------------------------+
| **Keep**  | -   **Keep your manual tank gauging records for at least |
|           |     1 year.** Unless you are recording actual release    |
| **These** |     detection results at least weekly and every 30 days  |
|           |     and maintaining records for at least 1 year, you are |
| **O&M     |     not doing leak detection right.                      |
| Records** |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **Keep the results of your most recent tightness     |
|           |     test.**                                              |
|           |                                                          |
|           | ```{=html}                                               |
|           | <!-- -->                                                 |
|           | ```                                                      |
|           | -   **Keep all certification and performance claims for  |
|           |     tank tightness test performed at your UST site for   |
|           |     at least 5 years.**                                  |
+-----------+----------------------------------------------------------+

+------------+---------------------------------------------------------+
| *          |                                                         |
| *Automatic |                                                         |
| Line Leak  |                                                         |
| Detection  |                                                         |
| (for       |                                                         |
| p          |                                                         |
| ressurized |                                                         |
| piping     |                                                         |
| only)**    |                                                         |
+------------+---------------------------------------------------------+
| **D        | **Automatic line leak detectors (LLDs) are designed to  |
| escription | detect a catastrophic release from pressurized piping.  |
| Of Release | Automatic LLDs must be designed to detect a leak at     |
| D          | least as small as 3 gallons per hour at a line pressure |
| etection** | of 10 psi within 1 hour. When a leak is detected,       |
|            | automatic LLDs must shut off the product flow, restrict |
|            | the product flow, or trigger an audible or visual       |
|            | alarm. NOTE: Mechanical automatic LLDs need to be       |
|            | installed and operated as close as possible to the tank |
|            | (LLDs are designed to detect a leak, restrict flow,     |
|            | etc. only between the detector and the dispenser).**    |
+------------+---------------------------------------------------------+
| **Have     | -   **Make sure your release detection equipment is     |
| Cer        |     certified for the types of piping and stored        |
| tification |     contents on which the release detection system is   |
| For Your   |     used.** Most manufacturers have their leak          |
| Release    |     detection devices tested and certified by a third   |
| Detection  |     party to verify that their equipment meets specific |
| Method**   |     performance requirements set by regulatory          |
|            |     agencies. If you don\'t have certified performance  |
|            |     claims, have the manufacturer provide them to you.  |
+------------+---------------------------------------------------------+
| **Perform  | -   **Frequently test your automatic LLDs according to  |
| These**    |     the manufacturer's instructions to make sure it is  |
|            |     working properly.** Don't assume that your release  |
| **O&M**    |     detection system is working and never needs         |
|            |     checking. Some monitoring systems have a test or    |
| *          |     self-diagnosis mode.                                |
| *Actions** |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Periodically have a qualified UST contractor,     |
|            |     such as the vendor who installed your release       |
|            |     detection system, service all the system components |
|            |     according to the manufacturers' service             |
|            |     instructions.** Components can wear out and must be |
|            |     checked periodically. Many vendors recommend or     |
|            |     require this maintenance activity at least          |
|            |     annually.                                           |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **See Section 3 of this manual if your LLD detects  |
|            |     a leak.**                                           |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Make sure employees who run, monitor, or maintain |
|            |     the release detection system know exactly what they |
|            |     have to do and to whom to report problems.**        |
|            |     Develop and maintain regular training programs for  |
|            |     all employees.                                      |
+------------+---------------------------------------------------------+
| **Keep**   | -   **For at least a year, keep the annual test that    |
|            |     demonstrates that the LLD is functioning            |
| **These**  |     properly.**                                         |
|            |                                                         |
| **O&M**    | ```{=html}                                              |
|            | <!-- -->                                                |
| *          | ```                                                     |
| *Records** | -   **If used for monthly monitoring, keep results of   |
|            |     your release detection system tests for at least 1  |
|            |     year.** Your monitoring equipment system may        |
|            |     provide printouts that can be used as records.      |
|            |     Unless you are recording actual release detection   |
|            |     results at least every 30 days and maintaining      |
|            |     records for at least 1 year, you are not doing leak |
|            |     detection right.                                    |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Keep all records of calibration, maintenance, and |
|            |     repair of your release detection equipment for at   |
|            |     least 1 year.**                                     |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Keep all performance claims supplied by the       |
|            |     installer, vendor, or manufacturer for at least 5   |
|            |     years.** These records include the certification of |
|            |     your leak detection equipment described above.      |
+------------+---------------------------------------------------------+

+------------+---------------------------------------------------------+
| **Line     |                                                         |
| Tightness  |                                                         |
| Testing    |                                                         |
| (for       |                                                         |
| piping     |                                                         |
| only)**    |                                                         |
+------------+---------------------------------------------------------+
| **D        | **This method uses a periodic line tightness test to    |
| escription | determine if your piping is leaking. Tightness testing  |
| Of Release | can be performed by either a trained professional or by |
| D          | using a permanently installed electronic system         |
| etection** | (sometimes connected to an automatic tank gauging       |
|            | system).**                                              |
+------------+---------------------------------------------------------+
| **Have     | -   **Make sure your line tightness testing or          |
| Cer        |     permanently installed electronic system is          |
| tification |     certified for the types of piping and stored        |
| For Your   |     contents on which the release detection system is   |
| Release    |     used.** Most tightness test methods and release     |
| Detection  |     detection equipment have been tested and certified  |
| Method**   |     by a third party to verify that the equipment or    |
|            |     services meet specific performance requirements set |
|            |     by regulatory agencies. If you don\'t have          |
|            |     certified performance claims, have the tightness    |
|            |     tester or equipment manufacturer provide them to    |
|            |     you.                                                |
+------------+---------------------------------------------------------+
| **Perform  | -   **If line tightness testing is used for pressurized |
| These**    |     piping, the test must be conducted at least         |
|            |     annually.**                                         |
| **O&M**    |                                                         |
|            | ```{=html}                                              |
| *          | <!-- -->                                                |
| *Actions** | ```                                                     |
|            | -   **If line tightness testing is used for suction     |
|            |     piping, the test must be conducted at least every   |
|            |     three years.** Safe suction piping as described at  |
|            |     the bottom of page 3 may not need release detection |
|            |     testing.                                            |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **This tightness testing must be conducted by a     |
|            |     professional trained in performing line tightness   |
|            |     testing or by using a permanently installed         |
|            |     electronic system.**                                |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **See Section 3 of this manual if your piping fails |
|            |     the tightness test or if the electronic system      |
|            |     indicates a leak.**                                 |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Periodically have a qualified UST contractor,     |
|            |     such as the vendor who installed your release       |
|            |     detection system, service all the system components |
|            |     according to the manufacturers' service             |
|            |     instructions.** Components can wear out and must be |
|            |     checked periodically. Many vendors recommend or     |
|            |     require this maintenance activity at least          |
|            |     annually.                                           |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Make sure employees who run, monitor, or maintain |
|            |     the release detection system know exactly what they |
|            |     have to do and to whom to report problems.**        |
|            |     Develop and maintain regular training programs for  |
|            |     all employees.                                      |
+------------+---------------------------------------------------------+
| **Keep**   | -   **Keep results of your release detection system     |
|            |     tests for at least 1 year.** Your monitoring        |
| **These**  |     equipment may provide printouts that can be used as |
|            |     records. Unless you are recording actual release    |
| **O&M**    |     detection results at least every 30 days and        |
|            |     maintaining records for at least 1 year, you are    |
| *          |     not doing leak detection right.                     |
| *Records** |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **If you use a permanently installed electronic     |
|            |     system, keep all records of calibration,            |
|            |     maintenance, and repair of your equipment for at    |
|            |     least 1 year.**                                     |
|            |                                                         |
|            | ```{=html}                                              |
|            | <!-- -->                                                |
|            | ```                                                     |
|            | -   **Keep all performance claims supplied by the       |
|            |     installer, vendor, or manufacturer for at least 5   |
|            |     years.** These records include the certification of |
|            |     your leak detection equipment described above.      |
+------------+---------------------------------------------------------+

**30-Day Release Detection Monitoring Record**

(May be used for monitoring wells, interstitial monitoring, and
automatic tank gauging)

Release Detection
Method:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Facility
Name:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

+--------+-----+------------+-------------+-------------+-------------+
| **     | **Y | **UST      |             |             |             |
| Date** | our | System     |             |             |             |
|        | Nam | (Tank &    |             |             |             |
|        | e** | Piping)**  |             |             |             |
|        |     |            |             |             |             |
|        |     | **(Enter N |             |             |             |
|        |     | for No     |             |             |             |
|        |     | Release    |             |             |             |
|        |     | Detected   |             |             |             |
|        |     | or Y for a |             |             |             |
|        |     | S          |             |             |             |
|        |     | uspected** |             |             |             |
|        |     |            |             |             |             |
|        |     | **Or       |             |             |             |
|        |     | Confirmed  |             |             |             |
|        |     | Release)** |             |             |             |
+--------+-----+------------+-------------+-------------+-------------+
|        |     | > **UST    | > **UST     | > **UST     | > **UST     |
|        |     | > \#**     | > \#**      | > \#**      | > \#**      |
+--------+-----+------------+-------------+-------------+-------------+
|        |     |            |             |             |             |
+--------+-----+------------+-------------+-------------+-------------+
|        |     |            |             |             |             |
+--------+-----+------------+-------------+-------------+-------------+
|        |     |            |             |             |             |
+--------+-----+------------+-------------+-------------+-------------+
|        |     |            |             |             |             |
+--------+-----+------------+-------------+-------------+-------------+
|        |     |            |             |             |             |
+--------+-----+------------+-------------+-------------+-------------+
|        |     |            |             |             |             |
+--------+-----+------------+-------------+-------------+-------------+
|        |     |            |             |             |             |
+--------+-----+------------+-------------+-------------+-------------+
|        |     |            |             |             |             |
+--------+-----+------------+-------------+-------------+-------------+
|        |     |            |             |             |             |
+--------+-----+------------+-------------+-------------+-------------+
|        |     |            |             |             |             |
+--------+-----+------------+-------------+-------------+-------------+
|        |     |            |             |             |             |
+--------+-----+------------+-------------+-------------+-------------+
|        |     |            |             |             |             |
+--------+-----+------------+-------------+-------------+-------------+
|        |     |            |             |             |             |
+--------+-----+------------+-------------+-------------+-------------+
|        |     |            |             |             |             |
+--------+-----+------------+-------------+-------------+-------------+
|        |     |            |             |             |             |
+--------+-----+------------+-------------+-------------+-------------+
|        |     |            |             |             |             |
+--------+-----+------------+-------------+-------------+-------------+
|        |     |            |             |             |             |
+--------+-----+------------+-------------+-------------+-------------+
|        |     |            |             |             |             |
+--------+-----+------------+-------------+-------------+-------------+
|        |     |            |             |             |             |
+--------+-----+------------+-------------+-------------+-------------+

**Keep This Piece Of Paper And Any Associated Printouts On File For At
Least 1 Year From The Date Of The Last Entry**