| (44) Petroleum substance waste--Any waste, excluding hazardous
waste and liquid wastes, which is generated as a result of a release of a
petroleum substance from an underground storage tank or a petroleum product
from an aboveground storage tank regulated by the commission pursuant to the
Texas Water Code, Chapter 26, Subchapter I.
(45) Public water system--A system for the provision to the
public of piped water for human consumption, if such system has at least 15
service connections or regularly services an average of at least 25 individuals
daily at least 60 days out of the year.
(46) Registration--Written authorization issued by the executive
director, which, by its conditions, may authorize the registrant to construct,
install, modify, or operate a petroleum-substance waste storage or treatment
facility or unit in accordance with specified limitations.
(47) Representative sample--A sample of a universe or whole
(e.g., waste pile, groundwater) which can be expected to exhibit the average
properties of the universe or whole.
(48) Reuse of petroleum-substance wastes--The process by which
a petroleum-substance waste is utilized as an effective substitute for a commercial
product, such as the proper use as a component of stabilized road base or
use as fill for LPST tankholds.
(49) Run-off--Any rainwater, leachate, or other liquid that
drains over or into land from any part of a facility, land surface treatment
unit, or stockpile.
(50) Run-on--Any rainwater, leachate, or other liquid that
drains over land onto or into any part of a facility, land surface treatment
unit, or stockpile.
(51) Saturated zone or zone of saturation--That part of the
earth's crust in which all voids are filled with water.
(52) Secondary containment--A system designed and constructed
to collect rainfall run-on and to contain spills, leaks, or discharges within
the facility without environmental contamination until such waste can be removed.
(53) Shipment--Any action involving the conveyance of petroleum-substance
waste by any means to or from a site.
(54) Sole-source aquifer--An aquifer designated pursuant to
the Safe Drinking Water Act, §1424(e) which solely or principally supplies
drinking water to an area, and which, if contaminated, would create a significant
hazard to public health.
(55) Spill--The spilling, leaking, pumping, emitting, emptying,
or dumping of wastes or materials which, when spilled, become wastes into
or on any land or water.
(56) Storage--The holding of petroleum-substance waste for
a temporary period, prior to the final treatment, disposal of, reuse, or storing
of the waste elsewhere.
(57) Stockpile--A soil storage area from which all petroleum-substance
wastes are removed for treatment or final disposition and from which all wastes
are removed at the time of closure of the facility.
(58) Thermal treatment unit--An enclosed device using controlled
flame combustion, microwave, UV, infrared, or other thermal treatment process.
(59) Treatment--Methods which are designed to change, by physical,
chemical, or biological means, the levels of contamination of the waste to
render the waste suitable for reuse or disposal.
(60) Treatment facility--A facility or unit which treats, recycles,
and/or reuses petroleum-substance wastes.
(61) Transporter--Any person who conveys or transports petroleum-substance
waste by truck, ship, pipeline, or other means.
(62) Unsaturated zone or zone of aeration--The zone between
the land surface and the water table.
(63) Uppermost aquifer--The geologic formation nearest the
natural ground surface that is an aquifer, as well as lower aquifers that
are hydraulically interconnected within the facility's property boundary.
(64) Waste management area--Any area on which one or more waste
management units resides.
(65) Waste management unit--A contiguous area of land on or
in which petroleum substance waste is placed, or a structure or machine used
to store or treat waste pursuant to a registration issued under this subchapter.
Examples of waste management units include a waste stockpile, a land surface
treatment area, a thermal treatment unit, a stockpile, a tank and its associated
piping and underlying containment system, and a container storage area.
(66) Wetlands--Those areas that are inundated or saturated
by surface water or groundwater at a frequency and duration sufficient to
support, and that under normal circumstances do support, a prevalence of vegetation
typically adapted for life in saturated soil conditions. Wetlands generally
include swamps, marshes, bogs and similar areas.
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