Section 175.840  Abandonment-in-Place


a)         No tank or piping may be abandoned-in-place unless the permit applicant demonstrates eligibility for a waiver of the removal requirement for the tank and/or piping. The waiver shall be granted only in the following instances:


1)         it would be infeasible to remove the UST due to loss of adjacent or subjacent support of nearby structures, such as railroad tracks, streets (as defined in Section 1-201 of the Illinois Vehicle Code [625 ILCS 5/1-201]), and other USTs;


2)         removal is infeasible because of inaccessibility, as determined by OSFM; or


3)         in unusual situations in which removal is infeasible due to other reasons, as determined by OSFM.


b)         In the event there is a delegation of authority to the City of Chicago to enforce UST rules and regulations, pursuant to the Gasoline Storage Act [430 ILCS 15/2], subject to the terms of such agreement, the City has the authority to modify subsection (d) of this Section, to issue permits to abandon in-place USTs located within the jurisdiction of the City and request records of abandonment-in-place; however, any criteria for abandonment-in-place shall be as stringent as that of OSFM. Tanks, inside the jurisdiction of the City of Chicago, which were abandoned-in-place prior to July 28, 1989 (the date of repeal of home rule by the City over USTs) in accordance with City laws, regulations or ordinances, need not be removed so long as a condition under subsection (a) allowing abandonment continues to exist.


c)         Tanks, outside the jurisdiction of the City of Chicago, filled with inert material, as described in subsection (d)(13), prior to October 1, 1985, need not be removed so long as a condition under subsection (a) allowing abandonment exists; however, the owners shall provide documentation of fill material and date of fill, upon request by OSFM. The documentation shall be a receipt or a written statement from the contractor who did the fill, a statement from the inspector who inspected the tank or a written statement from anyone designated by the State Fire Marshal or the Director of the Division of Petroleum and Chemical Safety.


d)         For UST abandonment-in-place, the following requirements and procedures shall be followed:


1)         An OSFM permit under Section 175.300 shall be obtained and the work scheduled with OSFM.


2)         Except as otherwise provided in this Section, the procedures of API 1604 shall be followed for vapor freeing and inerting procedures.


3)         All health and safety monitoring equipment shall be maintained according to manufacturer's specifications.


4)         An exclusion zone shall be established, within which smoking is prohibited. The exclusion zone shall include all hazardous (classified) locations/areas where work related to abandonment-in-place is being conducted. The use of spark producing/non-explosion proof equipment is prohibited in the vapor hazard area prior to removal of product and sludges and attaining the LEL/oxygen levels required in subsection (d)(9).


5)         Upon excavating to the top of the tank, on-site personnel shall drain product into approved drums or other approved receptacles and remove all piping except the vent line. Any associated piping to be abandoned-in-place shall be properly secured or capped and have prior approval by OSFM. Pipe trenches shall remain open for inspection by OSFM Storage Tank Safety Specialist (STSS). Further excavation below the top of the tank is not allowed until STSS is present and has verified that tank conditions meet the LEL/oxygen criteria of subsection (d)(9).


6)         All liquids shall be removed from the tank using explosion-proof pumps or hand pumps.


7)         The tank atmosphere and the excavation area shall be regularly monitored with a combustible gas indicator for flammable or combustible vapor concentration. Monitoring the UST shall be done at 3 levels in the tank: top, middle and bottom.  A confined space entry permit shall be obtained prior to tank entry and SDS must be on site.


8)         Vapor freeing shall be done in accordance with API 1604, except that dry ice shall not be allowed as a method of inerting tanks. When vapor freeing the tank with compressed air or using inert gases under pressure, all devices shall be bonded to the tank and the tank shall be grounded to a separate ground. When using inert gases, the cylinder shall be equipped with a pressure gauge so that no more than 5 psi can be discharged into the tank during vapor freeing procedures. To ensure and maintain proper grounding and bonding, the connections shall be tested by the contractor for continuity. This testing shall be done with equipment designed for continuity testing. When vapor freeing a tank, plastic pipes shall not be allowed as a vent tube on eductors.


9)          The tank shall be regularly monitored to insure that explosive conditions do not exist. A maximum of 5% of the LEL, or 5% or less oxygen concentration, shall be attained before the tank is considered safe for abandonment.


10)        An STSS shall be on site before hot work can proceed.


11)        A sufficient number of holes or openings shall be made in the tank for abandonment-in-place procedures if existing openings are not adequate.


12)        Cleaning procedures shall be in accordance with API 2015, incorporated by reference in 41 Ill. Adm. Code 174.210. Protective respiratory equipment for tank cleaning personnel shall be the type that provides positive air pressure to a full-face mask throughout the breathing cycle, in accordance with API 2015.


13)        After cleaning, on-site personnel shall proceed to introduce an OSFM-approved, inert material through openings in the top of the tank to minimize any surface settling subsequent to abandonment of the tank in place. Allowed inert material shall be limited to sand, gravel, clay, bentonite or inert material mixed with portland cement to increase flowability. The portland cement concentration may not exceed 50 lbs. per cubic yard of mixed material.  Any other materials must be approved by OSFM during the permit process. The procedure for filling shall be in accordance with API 1604.


14)        After the tank is filled with inert material, all tank openings shall be plugged or capped unless it was necessary to cut open the tank top. The vent line shall be disconnected, capped and removed.


15)      The tank owner must submit an amended Notification for Underground Storage Tanks on OSFM forms (available at https://www2.illinois.gov/sites/sfm/About/Divisions/Petroleum-Chemical-Safety/Pages/Applications-and-Forms.aspx) to  OSFM within 30 days after the abandonment-in-place.


16)        If an STSS has observed evidence of a release, the owner, operator or designated representative of the UST owner/operator must notify IEMA.  This is to be done at the site immediately following the field determination and the incident number shall be given to the STSS prior to his/her leaving the site.


17)        Every abandonment-in-place requires a site assessment (see 41 Ill. Adm. Code 176.330).


18)        When a UST is abandoned-in-place, the owner of the UST shall keep a permanent record of the UST location, the date of abandonment-in-place and the procedure used for abandonment-in-place.


e)         When a UST is allowed to be abandoned-in-place, as specified in this Section, the abandoned-in-place UST shall be removed when the condition for issuing the abandonment permit no longer exists. The removal procedures shall be followed and a removal permit is required.


f)         Compliance with subsections (d)(1) through (d)(14) is the responsibility of the contractor.


(Source:  Amended at 42 Ill. Reg. 10476, effective October 13, 2018)