Section 170.550  Release Detection and Cathodic Protection Recordkeeping

UST system owners or operators shall maintain records in accordance with Section 170.490, demonstrating compliance with all applicable Sections of this Subpart. All records are to be kept on site or available within 30 minutes or less via fax, email, or other transfer of information.  Failure to meet this 30 minute time frame at two separate facilities with the same registered ownership will then require the owner to maintain all records at all of that owner's sites thereafter; the 30 minute time frame will no longer be allowed.  Multiple incidents of not complying with the 30 minute time frame at one site will also cause the owner to lose this time option.  These records shall include the following:

a)         All written performance claims pertaining to any release detection system used and the manner in which these claims have been justified or tested by the equipment manufacturer or installer, shall be maintained for five years from the date of installation;

b)         The results of any sampling, testing or monitoring conducted or otherwise required shall be maintained for at least 3 years, except that the results of tank tightness testing conducted in accordance with Section 170.530(c) shall be retained until the next test is conducted;

c)         Written documentation of all calibration, maintenance and repair of release detection equipment permanently located on-site shall be maintained for at least 3 years after the servicing work is completed.  Any schedules of required calibration and maintenance provided by the release detection equipment manufacturer shall be retained for five years from the date of installation; and

d)         At the time of a compliance inspection/audit, the following shall be accomplished:

1)         Corrosion Protection

A)         Lined tanks must undergo a physical internal inspection 10 years after installation; and an internal inspection every 5 years thereafter; records must be kept on site for 5 years.

B)         STIP 3 tanks are to be tested every 3 years for proper corrosion protection operation and records from the previous test must be kept on site. In the event that a reading of -875 millivolts or less is recorded from testing conducted above the structure, on any type of corrosion protection system, then yearly testing will be required thereafter. In the event that upgrading of the cathodic protection system results with readings greater than -875 millivolts with readings being be conducted above the structure, testing may be conducted every 3 years; however, if the 6 month test after upgrading produces a reading of -875 millivolts or less, then yearly testing will be required thereafter.

C)         Tanks, lines and flex connectors with sacrificial anodes attached must be tested every 3 years to verify proper corrosion protection operation and records from the previous test must be kept on site. In the event that a reading of -875 millivolts or less is recorded with testing conducted above the structure, on any type of corrosion protection system, then yearly testing will be required thereafter. In the event that upgrading of the cathodic protection system results in readings greater than -875 millivolts with readings being conducted above the structure, testing may be conducted every 3 years; however, if the 6-month test after upgrading produces a reading of -875 millivolts or less, then yearly testing will be required thereafter.

D)         Impressed current systems must be inspected every 30 days and reports or a log maintained that shows date of inspection, initials of inspector, hour, volt and amp readings and power on verification, with a minimum of 3 years of records kept on site.  Also, a corrosion contractor must check the total system yearly from date of installation and results shall be kept on site for 3 years.

2)         Leak Detection Tanks

A)         Manual tank gauging.  Tanks up to 600 gallons require weekly inventory records and monthly reconciliation is allowed indefinitely.  Tanks 601 through 2,000 gallons require a yearly tightness test and weekly inventory records, and monthly reconciliation is allowed for only 10 years from cathodic protection installation.  Records are to be kept on site for 3 years minimum. Weekly and monthly standards are as follows: 600 gallons or less have a weekly maximum loss of 10 gal. and a monthly standard of 5 gal. averaged over 4 tests (weeks); for tanks 601 to 1,000 gal., 13 gal. weekly and 7 gal. 4 week average; tanks 1001 to 2,000 gal. weekly and 13 gal. 4 week average.

B)         Interstitial monitoring of tanks must be done monthly and records kept on site for 3 years.  The records can be a printed system status report from an ATG showing pass, normal, etc., or a log book showing date, initials of inspector, status of system pass, normal, etc. The interstitial system must be tested every 3 years to verify operation and previous test records must be kept on site.

C)         Inventory control is allowed for 10 years only from date of corrosion protection installation.  A precision tank tightness test must be performed at 5 years and 10 years prior to changing leak detection methods.  Daily inventory control records and monthly reconciliation records (minimum 3 years worth) and tightness test records are to be kept on site for 5 years.

D)         Automatic tank gauge.  A print out tape of the tank leak test showing one pass per tank per month must be kept for 3 years minimum.  If no tape is available from the unit, a log showing date, initials of person conducting the test, and leak results shall be maintained with a minimum of 3 years records kept on site.

E)         SIR.  A tank tightness test is required yearly from start date and the test results must be kept on site for 3 years.  Also, the monthly SIR reports are to be saved and records for the previous 3 years must be kept on site.

F)         Vapor and groundwater monitoring.  A monthly record must be taken on a log showing date of inspection and status (pass or fail) for each monitoring well with a minimum of 3 years records kept on site.

3)         Line Leak Detection

A)         American suction must have a line tightness test performed yearly and the test report must be kept on site for 3 years.

B)         Mechanical line leak detector and lines must be tested yearly with records kept on site for 3 years.

C)         Electronic line leak detectors must receive a 0.1 line test annually and 3 years worth of records must be kept, or they must be tested yearly along with their associated line and records must be kept on site for 3 years.

D)         Interstitial monitoring of lines must be done monthly and comply with the same requirements as interstitial monitoring for tanks (see subsection (d)(2)(B)).

(Source:  Amended at 27 Ill. Reg. 8164, effective May 1, 2003)