Sec. 2.5.
(a) A site
assessment for a UST system undergoing permanent closure or a change-in-service
must be provided by the UST owner or operator to the department not later than
thirty (30) days after completion of permanent closure or
change-in-service.
(b) The site
assessment must include the following information and be conducted as follows:
(1) Sampling and laboratory analysis, with
the associated detection limits, for soil samples and ground water samples are
required for the chemical of concern in the UST system. The quantity and
location of soil and ground water samples must be taken as follows:
(A) Quantity and location of soil samples for
permanent closure and change-in-service as follows:
(i) In-place closure soil samples must be
taken as described in section 2.6(a) of this rule.
(ii) Removal closure soil samples must be
taken as described in section 2.6(b) of this rule.
(iii) Change-in-service soil samples must be
taken as described in section 2.6(c) of this rule.
(B) Quantity and location of ground water
samples for each permanent closure and change-in-service must be taken as
described in section 2.6(d) of this rule.
(2) The owner or operator of the UST system
shall supply the following information:
(A)
The UST system facility owner or operator name, owner identification number
issued by the department, address, and phone number.
(B) The name of the UST system facility
contact person, owner or operator affiliation, and phone number.
(C) A list of all owners or operators of the
UST during the last twenty-five (25) years.
(3) For the UST closure contractor, the
following information:
(A) UST closure
contractor name, company name, and address.
(B) The name of the person onsite during
closure that is certified by the office of the state fire marshal to perform
UST closure and that person's certification number.
(4) For the UST site, information regarding
the following:
(A) Facility name, facility
identification number as issued by the department, address, and phone
number.
(B) Type of facility, past
and current operation.
(C)
Coverage, stating if coverage is turf, concrete, asphalt, or other.
(D) History of any spill reports listed by
incident number.
(E) Site proximity
to both human and environmentally sensitive areas, such as residences, schools,
wells, well fields, or wellhead protection areas described in
327 IAC 8-4.1.
(F) Backfill and site natural soil
texture.
(5) A
site-specific map or maps with illustrated legends and compass directions, and
at appropriate scale to show site details, described as follows:
(A) Drainage features, surface slope, or
surface water run-off direction.
(B) Identified aboveground features, such as
buildings, roadways, manways, pump islands, and utility and property
lines.
(C) Identified subsurface
features, such as tanks and excavation pit, piping, and utility
conduits.
(D) Locations where
samples were taken, soil borings made, and monitoring wells drilled.
(E) Location of active and previously closed
tanks, as applicable.
(F) Site
surroundings, such as adjacent buildings, businesses, or human and
environmentally sensitive areas, such as residences, schools, wells, well
fields, or wellhead protection areas delineated in
327 IAC 8-4.1.
(6) Information for the UST being
closed as follows:
(A) The number and volume
of tanks.
(B) Past and present
contents of the tank.
(C)
Construction material of the tank.
(D) Construction and material of
piping.
(E) Age and installation
date of the tank.
(F) Leak
detection methods used.
(G) Records
of the most current tank tightness test results.
(H) Records of any other current leak
detection method results, including the inventory records, ground water, or
vapor monitoring results.
(I)
Information on any previously closed UST system, such as the date closed and
the number, size, and product stored.
(7) Physical and chemical results of the
samples taken under subdivision (1) as follows:
(A) Data from analysis of soil samples
presented in a tabular format.
(B)
Data from analysis of water samples presented in a tabular format.
(C) A signed laboratory certificate of
analysis listing analysis method, preparation method, date of sample receipt,
and date of analysis.
(D) Proper
sample identification numbers for cross-reference to UST site maps.
(E) Chain of custody documentation.
(F) Description of the sampling procedures,
sampling equipment, and decontamination procedures.
(G) Data from analyses of used oil sampling,
as applicable.
(8)
Miscellaneous closure documentation as follows:
(A) Contaminated soil and contaminated water
disposal documentation.
(B)
Remaining product and sludge disposal documentation.
(C) Tank and piping disposal
documentation.
(c) If one (1) or more additional tanks are
discovered during a closure, the owner and operator shall:
(1) close each additional tank under this
rule; and
(2) supply all known
information specified in subsection (b) on each additional tank in the site
assessment.
(d) If, at
any time during the site assessment, a release is either suspected or confirmed
in the backfill, native soil, or ground water, the owner or operator shall:
(1) contact the department to report the
suspected or confirmed release within twenty-four (24) hours after the release
is suspected or confirmed; and
(2)
proceed with corrective action under
40 CFR
280, Subpart F*.
(e) The permanent closure or
change-in-service is not considered complete until all permanent closure or
change-in-service requirements and site assessment requirements are
met.
(f) If the site assessment is
incomplete, the owner or operator shall be notified by the commissioner and
shall have forty-five (45) days from receipt of the notice to complete the site
assessment.
(g) If the UST contains
hazardous substances, the owner and operator shall perform sampling and
analyses for the chemical of concern.
*This document is incorporated by reference. Copies may be
obtained from the Government Publishing Office, www.gpo.gov, or are available for review at the
Indiana Department of Environmental Management, Office of Legal Counsel,
Indiana Government Center North, 100 North Senate Avenue, Thirteenth Floor,
Indianapolis, IN 46204.
