Current through September 21, 2024
(a) All Class V facilities must meet or
exceed the design standards of these regulations including Part B of Chapter 11
and Chapter 26, Water Quality Rules and Regulations.
(b) All Class V facilities shall be
constructed to permit the use of testing devices, and allow monitoring of
injected fluid quality. Class V facilities shall be constructed to provide for
metering of the injectate volume if the individual or general permit requires
such metering.
(c) All heating and
cooling facilities (5A1, 5A2 and 5A3) shall include:
(i) Provision for the use of non-toxic
circulating medium in closed loop systems or an operating system which cannot
be made to operate with fluid leaking;
(ii) Provision for operations without the use
of corrosion inhibitors, biocides, or other toxic additives in open loop
systems;
(iii) Provisions to
control the total dissolved solids of waters injected into open loop systems to
the class of use standard;
(iv)
Provisions for automatic shutdown of the system in the event of a fluid loss
from a closed loop system or a loss of any product to an open loop
system;
(v) Provisions to ensure
that injected water does not come to the surface or flood any subsurface
structure in the immediate vicinity of the injection system; and
(vi) Provisions to ensure that known
groundwater contamination is not spread by the direct injection of contaminated
water or by movement of contamination from one zone to another caused
indirectly by the injection.
(d) All mining, sand and backfill facilities
(5B1) shall include:
(i) Provision for
insuring mechanical integrity of any well designed to remain in service for
more than 60 days;
(ii) Provision
for controlling the type of material injected and to insure that no hazardous
waste is injected;
(iii) Provision
for leak detection in all surface piping;
(iv) Provision for insuring that the backfill
remains within the permitted area of injection; and
(v) Provision to insure that the injection
does not cause a groundwater standards violation for the class of use of the
receiver.
(e) All
beneficial use injection facilities (5B2, 5B3, 5B4, 5B5, 5B6, and 5B7) shall
include:
(i) Plans to insure that
contaminants do not enter the injection stream;
(ii) Information to show that the injection
will accomplish the desired goal stated in the application; and
(iii) Target restoration values for the
groundwater in the affected area being remediated for 5B5 facilities.
(f) All commercial and industrial
Class V facilities (5C1, 5C2, 5C3 and 5C4) shall:
(i) Include a pre-treatment plan to insure
that toxic materials (substances) are not discharged to the groundwater at
concentrations higher than the class of use standards found in Chapter 8,
Wyoming Water Quality Rules and Regulations or any primary drinking water
standard found in 40 CFR 141 (as of June 6, 2001), whichever is more
stringent;
(ii) Conform to
applicable construction standards found in Chapter 25, Wyoming Water Quality
Rules and Regulations; and
(iii)
Include, at a minimum, annual sampling of the waste injected as part of the
monitoring plan for the facility.
(g) When a 5C3 facility receiving slaughter
house wastes can demonstrate that no violations of groundwater standards will
occur, the facility shall be:
(i) Designed
for the following minimum disposal capacities:
(A) 300 gallons per day for plant cleanup
plus;
(B) 25 gallons per head of
cattle slaughter capacity;
(C) 40
gallons per head of hog slaughter capacity;
(D) 35 gallons per head of sheep slaughter
capacity; and
(E) Appropriate
capacity for any other species slaughtered on a per head basis.
(ii) Designed to prevent the
disposal of blood and viscera into the septic system except as a small
incidental portion of the total flow. Blood and viscera shall be sent to a
rendering plant or other approved disposal or recycling system.
(iii) A grease trap shall be provided ahead
of the septic system with a total capacity equal to one half of the total
required capacity of the septic tank.
(h) All drainage facilities (those with the
code number 5D on Appendix A) shall include:
(i) A plan to preclude the inadvertent
introduction of contaminants into the wastewater stream;
(ii) An operations and maintenance manual
detailing maintenance required, reporting requirements for known spills
affecting the facility, and steps to be taken to prevent the introduction of
contaminants in the event of a spill within the area served by the facility;
and
(iii) Maps showing the area
where runoff will be transported to the drainage facility.
(i) All agricultural drainage
facilities (5D1) injecting surface runoff from animal waste piles, feedlots, or
dairy operations for which a demonstration can be made that the groundwater
standards can be met, shall be designed for treatment in a septic tank, lagoon,
or other treatment technology prior to injection. The following requirements
apply to these systems:
(i) The treatment
facility shall be sized for the strength and solids content of the wastewater
to be treated;
(ii) The flow
capacity requirements shall include all runoff from operations within the
collection area and all runoff from precipitation up to and including a 25
year, 24 hour design storm; and
(iii) The flow capacity requirements for
drainage from a fully enclosed dairy or feeding operation shall be as follows:
(A) 20 gallons per day per animal up to 50
pounds;
(B) 100 gallons per day per
animal up to 500 pounds; and
(C)
200 gallons per day per animal over 500 pounds.
(iv) The subsurface fluid distribution system
shall be designed in accordance with general design requirements found in
Chapter 25.
(j) All
sewage disposal (5E) facilities shall:
(i)
Conform to applicable construction standards found in Chapter 25, Wyoming Water
Quality Rules and Regulations;
(ii)
Comply with applicable sections of Chapter 11, Parts B and C, Water Quality
Rules and Regulations for all piping systems or storage facilities feeding
existing or Class V facilities constructed after the effective date of these
regulations; and
(iii) Be designed
for the maximum daily peak flow determined from Table 1 of Chapter 25, Water
Quality Rules and Regulations. In addition, whenever multiple points of
discharge under one owner within any five (5) acres of land have a design
capacity under Chapter 25 to inject more than a total of 2,000 gallons per day
of domestic sewage, they shall be permitted under this chapter in the same
manner that they would be permitted if all the waste were delivered to a single
point of discharge.
(k)
All aquiculture return flow facilities (5E1) shall include pretreatment in a
lagoon, septic tank, or oxidation ditch sized for the strength and volume of
the wastes to be disposed of.
(l)
All domestic wastewater treatment plant disposal facilities (5E4) shall also
include:
(i) Provisions for filtering of the
waste and disinfection of the injectate;
(ii) An environmental monitoring program,
including pre-discharge, operational monitoring, and post discharge
monitoring;
(iii) Monitoring of the
injectate on at least a weekly basis for Nitrate as N, Ammonia as N, and
coliform bacteria;
(iv) Design to
prevent groundwater standards violations as defined by Chapter 8, Water Quality
Rules and Regulations;
(v) The
points of compliance shall be at down gradient monitor wells installed on land
owned by the same utility that operates the treatment plant and injection
facilities whenever the point of injection is not the point of compliance;
and
(vi) Requirements for the
submission, approval and conformance with an operational and maintenance
manual.
(m) All cathodic
protection facilities (5F1) shall include:
(i) A seal of sodium bentonite or sodium
bentonite grout is required from the surface to a minimum depth of three (3)
feet. A second sodium bentonite or sodium bentonite grout seal is required for
a minimum thickness of three (3) feet, just above the top of the coke breeze.
After the sodium bentonite has been placed in the hole, it shall be hydrated to
insure a proper seal. The remainder of the hole between these seals may be
backfilled with cuttings. The above seals may be placed directly in the hole or
may be placed outside of a surface pipe of sufficient length to reach down to
the anodes. If a surface pipe is used, no seals are required inside the pipe
except during final abandonment.
(ii) All aquifers encountered while drilling
shall be isolated from one another using a bentonite seal of at least two (2)
feet in vertical dimension.
(iii)
The coke breeze shall be a high quality product containing a minimum of
leachable metals or organic pollutants. The coke breeze shall not discharge any
pollutant which will cause a groundwater standard violation.
(iv) Surface access to the anode shall be
kept sealed and locked at all times when the anode is not actually being
serviced.
(v) Each separate aquifer
penetrated shall require a separate breather pipe. Each aquifer shall remain in
hydrologic isolation from each other if they were isolated prior to
installation.
(vi) If it becomes
necessary to wet any anode installed under this section, only water from a
public water supply or water meeting all of the standards for Class I
groundwater of the state shall be used unless the division is first supplied
with an analyses of the water for approval.
(vii) Each 5F1 facility shall be marked in
the field with a sign showing the name, address, and telephone number of the
operator who installed the system. Upon abandonment, such markers shall remain
in place.
(viii) A 5F1 facility
shall not be installed within 200 feet of any pipeline, wellhead, storage tank,
mud pit or other potential source of pollution unless the operator's surface
rights prevent this requirement from being met.
(n) Except for beneficial use facilities,
Class V facilities shall not be located within 200 feet of any active public
water supply well, regardless of whether or not the well is completed in the
same aquifer. This minimum distance may increase or the existence of a Class V
facility may be prohibited within a state approved wellhead protection area,
source water protection area or water quality management plan area.
(o) Class 5C6 and 5E5 facilities shall meet
the construction standards and separation distances appropriate for the design
flow as shown in Chapter 25.
(p)
Class 5C5 coal bed methane injection facilities shall:
(i) Provide for metering of water injected
into each well;
(ii) Be constructed
to insure that the water injected reaches the intended receiver and only the
intended receiver. The intended receiver shall be identified by geologic
formation and/or member name as well as the depth of that receiver below ground
surface;
(iii) Provide for
disinfection of the water injected if analysis shows that coliform bacteria,
sulfate reducing bacteria or iron fixing bacteria are present in the water as
pumped from the coal seam. Treatment methods must be methods that would be
appropriate for treating water in a public water supply system;
(iv) Provide for injection at a pressure of
less than the fracture pressure of the receiver; and
(v) Provide for monitoring of the quality of
the injected water on a periodic basis.
(vi) Provide notification of the intent to
obtain coverage under the general permit to all surface owners, mineral owners
or water rights owners, oil and gas owners and the owners of coal leases within
one-half mile of the proposed point of injection.
(vii) Provide for pressure testing of the
casing before injection and at least once every five (5) years thereafter. The
casing shall be pressure tested up to an indicated surface pressure of 700 psi
and held for 15 minutes. A passing result is indicated if the casing still has
690 psi at the end of the 15 minute shut in time.
