Wyoming Administrative Code › Agency 020 - Environmental Quality, Dept. of › Sub-Agency 0011 - Water Quality › Chapter 16 - INJECTION WELLS › Appendix A - SUBCLASSES OF CLASS V FACILITIES

Current through July 13, 2024
SUBCLASS DESCRIPTION
HEATING AND COOLING
				  FACILITIES
5A1 Direct Heat Reinjection Facilities - Reinject geothermal
				  fluids used to provide direct heat for large buildings, developments or
				  aquiculture facilities.
5A2 Heat Pump/Air Conditioner Return Flow Facilities -
				  Reinject groundwater used to heat or cool a building in a ground based heat
				  pump system, or used to inject heat only using a closed loop heat pump
				  system.
5A3 Cooling Water Return Flow Facilities - Receive
				  non-contact cooling water from industrial processes, both open and closed loop
				  processes.
BENEFICIAL USE INJECTION
				  FACILITIES
5B1 Mining, Sand or Backfill Facilities - Used to inject a
				  fluid mixture of sand, cement, fly ash used as a pozzalin, or mill tailings
				  into mined out portions of underground mines.
5B2 Aquifer Recharge Facilities - Receive water specifically
				  for storage of water underground. Must be coupled with the ability to withdraw
				  stored water at a later date for beneficial use. Coal bed methane operators
				  cannot dispose of their produced water in class 5B2 injection wells after the
				  effective date of these rules.
5B3 Saline Water Intrusion Barrier Facilities - Receive fresh
				  water to prevent the continued migration of saline water into a fresh water
				  aquifer. Includes projects installed to control contaminant plumes by injection
				  of clean water.
5B4 Subsidence Control Facilities - Receive fresh water for
				  the purpose of controlling subsidence caused by an overdraft of water, oil or
				  natural gas.
5B5 Facilities which inject fluids and are used to prevent,
				  control or remediate aquifer pollution, which are not owned or controlled by
				  the Department of Environmental Quality. All 5B5 facilities are covered under
				  Article 16 of the Environmental Quality Act.
5B6 Department Controlled Facilities - Facilities which
				  inject fluids and are used to prevent, control or remediate pollution,
				  remediate subsiding mine sites, or produce other beneficial results which are
				  owned or controlled by the Department of Environmental Quality. These
				  facilities include but are not limited to, facilities under the supervision of
				  Water Quality Division's Underground Storage Tank Program, facilities under the
				  control and direction of the Abandoned Mined Lands Program, and facilities
				  under the supervision of the Solid and Hazardous Waste Management Division.
				  Control may be exercised through ownership, operation, or by administrative
				  orders, stipulated settlements, consent decrees or other legal methods which
				  result in control of a facility by the department.
5B7 Air sparging facilities - Facilities used to inject only
				  air for the purpose of either encouraging microbial breakdown of hydrocarbons
				  or removing of volatile chemicals by vapor extraction.
COMMERCIAL AND INDUSTRIAL
				  FACILITIES
5C1 Air Scrubber Waste Disposal Facilities - Inject wastes
				  from air scrubbers used to remove sulphur, fly ash, or other
				  contaminants.
5C2 Water Treatment Brine Disposal Facilities - Receive brine
				  from water softening or other water treatment.
5C3 Industrial Process Water and Waste Disposal Facilities -
				  Receive wastes generated by industrial and commercial processes. Examples
				  include but are not limited to wastes from car washing, taxidermy, metal
				  plating, printing, silk screening, refining, slaughter houses, and chemical
				  manufacturing companies.
5C4 Automotive Waste Disposal Facilities - Inject waste from
				  floor drains or sinks where repair work is done on machinery of any
				  description.
5C5 Coal Bed Methane Injection Facilities - Inject
				  groundwater produced in the process of coal bed methane extraction into a
				  receiving aquifer containing water of the same or lower class of use.
5C6 Small Commercial Disposal Systems - Inject wastewater
				  which is of similar quality to domestic sewage which does not technically meet
				  the definition of domestic sewage, in quantities of less than 2,000 gallons per
				  day.
DRAINAGE FACILITIES
5D1 Agricultural Drainage Facilities - Receive irrigation
				  tailwaters, other field drainage, animal yard, feedlot, or dairy runoff, and
				  other agricultural wastewater.
5D2 Storm Water Drainage Facilities - Receive storm water
				  runoff from paved areas, including parking lots, streets, residential
				  subdivisions, building roofs, highways, etc.
5D3 Improved Sinkholes - Receive storm water runoff from
				  developments located in karst topographic areas.
5D4 Industrial Drainage Facilities - Receive storm runoff
				  from areas susceptible to spills, leaks, and other chemical discharges.
5D5 Special Drainage Facilities - Receive water from sources
				  other than direct precipitation. Examples of this type include landslide
				  control drainage facilities, potable water tank overflow drainage facilities,
				  swimming pool drainage facilities, and lake level control drainage
				  facilities.
SEWAGE DISPOSAL FACILITIES
5E1 Aquaculture Return Flow Facilities - Receive injectate
				  from aquaculture operations.
5E2 Untreated Domestic sewage Disposal Facilities - Receive
				  untreated domestic sewage from single or multiple sources. Does not include
				  subsurface fluid distribution systems with septic tanks ahead of the subsurface
				  fluid distribution system. Includes all cesspools, regardless of
				  capacity.
5E3 Domestic Subsurface Fluid Distribution Systems - Receive
				  more than 2,000 gallons per day of domestic sewage with only primary treatment
				  such as effluent from a septic tank. In addition, any facility injecting
				  domestic sewage within any five (5) acres of land is a class 5E3 facility
				  whenever multiple 5E facilities under one owner inject a cumulative maximum
				  peak design flow of more than 2,000 gallons per day of domestic sewage.
5E4 Domestic Wastewater Treatment Plant Disposal Facilities -
				  Dispose of treated domestic waste after treatment to at least secondary
				  treatment standards.
5E5 Small Domestic Subsurface Fluid Distribution Systems -
				  Receive less than 2,000 gallons per day as an average of a typical week, of
				  domestic sewage with only primary treatment in a septic tank. These systems are
				  designed to accept more than 2,000 gallons per day at a peak and are not small
				  wastewater systems. No class 5E5 system has a required design capacity in
				  excess of 5,000 gallons per day.
MISCELLANEOUS CLASS V
				  FACILITIES
5F1 Cathodic Protection Facilities - Facilities constructed
				  with coke breeze and dust control oil for use as a permanent anode in a
				  cathodic protection system for a fluid conveyor system or fluid containment
				  system composed of metallic material.
5F2 All other facilities that inject fluids into or above an
				  underground source of drinking water which do not fall into Classes I, II, III,
				  or IV injection facilities.