Current through Register Vol. 30, No. 38, September 20, 2024
A. A
1.01 General Permit allows any discharge of wash water from a sand and gravel
operation, placer mining operation, or other similar activity, including
construction, foundation, and underground dewatering, if only physical
processes are employed and only hazardous substances at naturally occurring
concentrations in the sand, gravel, or other rock material are present in the
discharge.
B. A 1.02 General Permit
allows any discharge from hydrostatic tests of a drinking water distribution
system and pipelines not previously used, if all the following conditions are
met:
1. The quality of the water used for the
test does not exceed an Aquifer Water Quality Standard or for non-drinking
water pipelines, if reclaimed water is used, the reclaimed water meets Class A+
Reclaimed Water Quality Standards under A.A.C.
R18-11-303
or Class B+ Reclaimed Water Quality Standards under A.A.C.
R18-11-305;
2. The discharge is not to a water of the
United States, unless the discharge is under an AZPDES permit; and
3. The test site is restored to its natural
grade.
C. A 1.03 General
Permit allows any discharge from hydrostatic tests of a pipeline, tank, or
appurtenance previously used for transmission of fluid, other than those
previously used for drinking water distribution systems, if all the following
conditions are met:
1. All liquid discharge is
contained in an impoundment lined with flexible geomembrane. The liquid is
evaporated or removed from the impoundment and taken to a treatment works or
landfill authorized to accept the material within:
a. 60 days of the hydrostatic test if the
liner is 10 mils, or
b. 180 days of
the hydrostatic test if the liner is 30 mils or greater;
2. The liner is placed over a layer, at least
3 inches thick, of well-sorted sand or finer grained material, or over an
underliner that provides protection equal to or better than sand or finer
grained material and the calculated seepage is less than 550 gallons per acre
per day;
3. The liner is removed
and disposed of at an approved landfill unless the liner can be reused at
another test location without a reduction in integrity;
4. The test site is restored to its natural
grade; and
5. If the test waters
are removed using a method not specified in subsection (C)(1), including a
discharge under an AZPDES permit, the test waters meet Aquifer Water Quality
Standards and the specific method is approved by the Department before the
discharge.
D. A 1.04
General Permit allows any discharge from a facility that, for water quality
sampling, hydrologic parameter testing, well development, redevelopment, or
potable water system maintenance and repair purposes, receives water, drilling
fluids, or drill cuttings from a well if the discharge is to the same aquifer
in approximately the same location from which the water supply was originally
withdrawn, or the discharge is under an AZPDES permit.
E. A 1.05 General Permit allows a discharge
to an injection well, surface impoundment, and leach line only if the discharge
is filter backwash from a potable water treatment system, condensate from a
refrigeration unit, overflows from an evaporative cooler, heat exchange system
return water, or swimming pool filter backwash and the discharge is less than
1000 gallons per day. The 1.05 General Permit allows a discharge of those
sources to a navigable water if the discharge is authorized by an AZPDES
permit.
F. A 1.06 General Permit
allows the burial of mining industry off-road motor vehicle waste tires at the
mine site in a manner consistent with the cover requirements in
R18-13-1203.
G. A 1.07 General Permit allows the operation
of dockside facilities and watercraft if the following conditions are met:
1. Docks that service watercraft equipped
with toilets provide sanitary facilities at dockside for the disposal of sewage
from watercraft toilets. No wastewater from sinks, showers, laundries, baths,
or other plumbing fixtures at a dockside facility is discharged into waters of
the state;
2. Docks that service
watercraft have conveniently located toilet facilities for men and
women;
3. No boat, houseboat, or
other type of watercraft is equipped with a marine toilet constructed and
operated to discharge sewage directly or indirectly into a water of the state,
nor is any container of sewage placed, left, discharged, or caused to be
placed, left, or discharged in or near any waters of the state by a
person;
4. Watercraft with marine
toilets constructed to allow sewage to be discharged directly into waters of
the state are locked and sealed to prevent usage. Chemical or other type marine
toilets with approved storage containers are permitted if dockside disposal
facilities are provided; and
5. No
bilge water or wastewater from sinks, showers, laundries, baths, or other
plumbing fixtures on houseboats or other watercraft is discharged into waters
of the state.
H. A 1.08
General Permit allows for any earth pit privy, fixed or transportable chemical
toilet, incinerator toilet or privy, or pail or can-type privy if allowed by a
county health or environmental department under A.R.S. Title 36 or a delegation
agreement under A.R.S. §
49-107.
I. A 1.09 General Permit allows:
1. The operation of:
a. A sewage treatment facility with flows
less than 20,000 gallons per day and approved by the Department before January
1, 2001, and
b. An on-site
wastewater treatment facility with flows less than 20,000 gallons per day
operating before January 1, 2001;
2. The person who owns or operates a facility
under subsections (I)(1)(a) or (b) to operate the facility if the following
conditions are met:
a. The discharge from the
facility does not cause or contribute to a violation of a water quality
standard;
b. The owner or operator
does not expand the facility to accommodate flows above the design flow or
20,000 gallons per day, whichever is less;
c. The facility only treats typical
sewage;
d. The facility does not
treat flows from commercial operations using hazardous substances or creating
hazardous wastes, as defined in A.R.S. §
49-921(5);
e. The discharge from the facility does not
create any environmental nuisance condition listed in A.R.S. §
49-141;
or
f. The owner or operator does
not alter the treatment or disposal characteristics of the original facility,
except as allowed under
R18-9-A309(A)(9)(a).
J. A 1.10 General
Permit allows the operation of a sewage collection system installed before
January 1, 2001 that serves downstream from the point where the daily design
flow is 3000 gallons per day or that includes a manhole, force main, or lift
station serving more than one dwelling regardless of flow, if:
1. The system complies with the performance
standards in R18-9-E301(B),
2. No
sewage is released from the sewage collection system to the land surface,
and
3. The system is not operating
under the 2.05 General Permit.
K. A 1.11 General Permit allows the operation
of a sewage collection system that serves upstream from the point where the
daily design flow is 3000 gallons per day to the building drains, or a single
gravity sewer line conveying sewage from a building drain directly to an
interceptor, lateral, or manhole, regardless of daily design flow, if all of
the following are met:
1. The system does not
cause or contribute to an exceedance of a water quality standard established in
18 A.A.C. 11, Articles 1 and 4;
2.
No sewage is released from the sewage collection system to the land
surface;
3. No environmental
nuisance condition listed in A.R.S. §
49-141 is
created;
4. The system does not
include a manhole, force main, or lift station serving more than one
dwelling;
5. Applicable local
administrative requirements for review and approval of design and construction
are followed;
6. The performance
standards specified in R18-9-E301(B) are met using:
a. Local building and construction
codes,
b. Relevant design and
construction standards specified in R18-9-E301, and
c. Appropriate operation and
maintenance;
7. The
system flows directly into one of the following downstream facilities:
a. An on-site wastewater treatment
facility;
b. A sewage treatment
facility operating under an individual permit; or
c. A sewage collection system operating under
a 1.10, 2.05, or 4.01 General Permit; and
8. The system is not operating under a 2.05
General Permit.
L. A
1.12 General Permit allows the discharge of wastewater resulting from washing
concrete from trucks, pumps, and ancillary equipment to an impoundment if the
following conditions are met:
1. The person
holds an AZPDES Construction General Permit authorizing the concrete washout
activities;
2. The Stormwater
Pollution Prevention Plan required by the Construction General Permit issued
according to 18 A.A.C. 9, Article 9, Part C, for the construction activity
addresses the concrete washout activities;
3. The vegetation at the soil base of the
impoundment is cleared, grubbed, and compacted to uniform density not less than
95 percent. If the impoundment is located above grade, the berms or dikes are
compacted to a uniform density not less than 95 percent;
4. If groundwater is less than 20 feet below
land surface, the impoundment is lined with a synthetic liner at least 30 mils
thick;
5. The impoundment is
located at least 50 feet from any storm drain inlet, open drainage facility, or
watercourse and 100 feet from any water supply well;
6. The impoundment is designed and operated
to maintain adequate freeboard to prevent overflow or discharge of
wastewater;
7. The concrete washout
wastewater from any wash pad is routed to the impoundment;
8. The impoundment receives only concrete
washout wastewater;
9. The annual
average daily flow of wastewater to the impoundment is less than 3000 gallons
per day; and
10. The following
closure requirements are met.
a. The facility
is closed by removing and appropriately disposing of any liquids remaining in
the impoundment,
b. The area is
graded to prevent ponding of water, and
c. Closure activities are completed before
filing of the Notice of Termination under the AZPDES Construction General
Permit.
