310 CMR, § 80.21 - Requirements for Spill Buckets and Overfill Prevention Equipment
(1) All fill ports used to introduce
regulated substance to a UST system shall be equipped with a spill bucket.
(a) Spill buckets, including replacement
spill buckets, installed on or after January 2, 2015 shall have a minimum
capacity of five gallons, unless it is not physically possible to replace a
three-gallon spill bucket with a five-gallon spill bucket. "Not physically
possible" means that the area where the three-gallon spill bucket is installed
cannot be made to accommodate a five-gallon spill bucket by any physical means
including, but not limited to, digging or jack hammering.
1. If it is not physically possible to
replace a three-gallon spill bucket with a five-gallon spill bucket, the Owner
or Operator shall certify to the Department that it is not physically possible
in a letter signed in accordance with
310 CMR
80.11.
2. If it is not physically possible to
replace a three-gallon spill bucket with a five-gallon spill bucket, the Owner
or Operator shall install a spill bucket no smaller than three
gallons.
(b) Spill
buckets installed before January 2, 2015 shall have a minimum capacity of three
gallons.
(c) All spill buckets
shall pass an integrity test at installation to ensure the spill bucket is
liquid tight by using a vacuum or hydrostatic test in accordance with PEI RPI
1200-19. The Owner or Operator shall keep records of this test in accordance
with
310 CMR
80.36.
(d) Spill bucket covers installed on and
after October 1, 2021 shall be designed and installed with a final grade that
channels storm water away from the spill bucket and the paved surface is
crowned as to protect the spill bucket and fill port from damage due to
traffic.
(2) UST systems
shall have an overfill prevention device that is designed to allow a tank
tightness test and installed in accordance with the manufacturer's
specifications.
(a) On or after January 2,
2015, new or replacement ball float valves are prohibited from being used as
the primary overfill prevention device. Owners and Operators may continue to
use ball float valves as a secondary overfill prevention device, unless the
ball float valve interferes with the operation of the primary overfill
prevention device. Ball float valves installed prior to January 2, 2015 may be
used as the primary overfill prevention device until the ball float valve is
replaced.
(b) All UST systems shall
be equipped with one of the following:
1. An
automatic shut off device that shall automatically and completely shut off flow
into the tank when the tank is no more than 95% full.
2. A device which shall sufficiently alert
the operator and regulated substance deliverer when the tank is at a maximum of
90% full by triggering a high-level alarm.
a.
All high level alarms installed on and after January 2, 2015 shall be visible
and audible to the regulated substance deliverer.
b. All high-level alarms shall be clearly
labeled as a tank overfill alarm.
3. A ball float valve which shall alert the
regulated substance deliverer by restricting the flow into the tank 30 minutes
prior to overfilling, in accordance with 310 CMR 80.21(2)(a).
Notes
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