Mich. Admin. Code R. 29.2151 - Temporary closure
Rule 51. Section 280.70 is amended to read as follows:
Section 280.70. Temporary closure.
(a) An UST system is considered temporarily
closed if it is empty for more than 90 continuous days and it is intended to be
brought back into use within 12 months. Owners and operators shall continue the
operation and maintenance of corrosion protection in accordance with section
280.31 and any release detection in accordance with subpart D and K of these
rules. However, release detection and release detection operation and
maintenance testing and inspections in subparts C and D are not required if the
UST system is empty. In addition, spill and overfill operation and maintenance
testing and inspections in subpart C are not required. The UST system is empty
when all materials have been removed using commonly employed practices so that
not more than 2.5 centimeters (1 inch) of residue or 0.3% by weight of the
total capacity of the UST system remains in the system. The provisions of
subparts E and F of these rules must be complied with if a release is suspected
or confirmed. The owner shall provide the department with written notification,
using the registration form provided by the department, indicating that the UST
system will be temporarily closed for not more than 12 months and that the
owner intends to bring the UST system back into service within the 12-month
period.
(b) If an UST system is
temporarily closed for 3 months or more, then the owners and operators shall
also comply with both of the following requirements:
(1) Leave vent lines open and
functioning.
(2) Cap and secure all
other lines, pumps, manways, and ancillary equipment.
(c) If an UST system is temporarily closed
for more than 12 months, then the owners and operators shall permanently close
the UST system if it does not meet either the performance standards specified
in section 280.20 for new UST systems or the upgrading requirements specified
in section 280.21, except that the spill and overfill equipment requirements do
not have to be met. Owners and operators shall permanently close the
substandard UST systems at the end of the 12-month period in accordance with
sections 280.71 to 280.74, unless the department provides an extension of the
12-month temporary closure period. The request shall be received in writing not
less than 30 days before the 12-month deadline ends. The extension shall not be
for more than 12 months. Owners and operators shall complete a site assessment
in accordance with section 280.72 before applying for an extension.
(d) Immediately before bringing an UST system
back into use, the owners and operators shall perform tank and piping tightness
tests conducted in accordance with the requirements of sections 280.43(c) and
280.44(b) on a UST system that is temporarily closed for 12 months or more and
shall confirm that the UST system is tight.
Notes
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