"Tier 1 General Permit (Gen 2401)" - Oregon

Tier 1 General Permit (Gen 2401) is a legal document that was released by the Oregon Department of Environmental Quality - a government authority operating within Oregon.

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Permit Number: 2401
Expiration Date: May 1, 2027
WATER POLLUTION CONTROL FACILITIES GENERAL PERMIT
Oregon Department of Environmental Quality
700 NE Multnomah St Suite 600
Portland, OR 97232
Phone: 503-229-5696
Issued pursuant to ORS 468B.050
GEN 2401
ISSUED TO:
SOURCES COVERED BY THIS PERMIT:
WQ File No:
This permit applies to graywater reuse and disposal
County/Region:
systems that:
Registered date:
Generate graywater from a single family
residence or a residential duplex having no
Legal Name:
more than four bedrooms.
Mailing Address :
Collect for reuse no more than 300 gallons of
graywater per day.
Collect and reuse only Type 1 graywater as
defined under OAR 340 Division 053.
Use graywater only for subsurface irrigation.
Site Location:
Are not located in an area covered by a
geographic general permit.
Email:
Lydia Emer
Date signed
Operations Division Administrator
Effective date: June 1, 2017
PERMITTED ACTIVITIES
Until this permit expires or is modified or revoked, the permittee is authorized to construct, install, modify,
or operate a graywater reuse and disposal system in conformance with all local building codes as well as
the requirements, limitations, and conditions set forth in the attached schedules as follows:
Pages
Definitions..................................................................................................................................................... 3
Schedule A – Graywater reuse and disposal limitations ............................................................................... 4
Schedule B – Minimum monitoring and reporting requirements ................................................................. 6
Schedule D – Special Conditions .................................................................................................................. 7
Schedule F – General Conditions.................................................................................................................. 9
Unless specifically authorized by this permit, by another NPDES or WPCF permit, or by Oregon
Administrative Rule, any other direct or indirect discharge to waters of the state is prohibited, including
discharge to an underground injection control system.
Permit Number: 2401
Expiration Date: May 1, 2027
WATER POLLUTION CONTROL FACILITIES GENERAL PERMIT
Oregon Department of Environmental Quality
700 NE Multnomah St Suite 600
Portland, OR 97232
Phone: 503-229-5696
Issued pursuant to ORS 468B.050
GEN 2401
ISSUED TO:
SOURCES COVERED BY THIS PERMIT:
WQ File No:
This permit applies to graywater reuse and disposal
County/Region:
systems that:
Registered date:
Generate graywater from a single family
residence or a residential duplex having no
Legal Name:
more than four bedrooms.
Mailing Address :
Collect for reuse no more than 300 gallons of
graywater per day.
Collect and reuse only Type 1 graywater as
defined under OAR 340 Division 053.
Use graywater only for subsurface irrigation.
Site Location:
Are not located in an area covered by a
geographic general permit.
Email:
Lydia Emer
Date signed
Operations Division Administrator
Effective date: June 1, 2017
PERMITTED ACTIVITIES
Until this permit expires or is modified or revoked, the permittee is authorized to construct, install, modify,
or operate a graywater reuse and disposal system in conformance with all local building codes as well as
the requirements, limitations, and conditions set forth in the attached schedules as follows:
Pages
Definitions..................................................................................................................................................... 3
Schedule A – Graywater reuse and disposal limitations ............................................................................... 4
Schedule B – Minimum monitoring and reporting requirements ................................................................. 6
Schedule D – Special Conditions .................................................................................................................. 7
Schedule F – General Conditions.................................................................................................................. 9
Unless specifically authorized by this permit, by another NPDES or WPCF permit, or by Oregon
Administrative Rule, any other direct or indirect discharge to waters of the state is prohibited, including
discharge to an underground injection control system.
Permit Number: 2401
Page 2 of 10
COVERAGE AND ELIGIBLILITY
1. A person registered under this permit may reuse graywater only for subsurface irrigation.
2. A person registered under this permit may not allow graywater to discharge to waters of the state
which include surface water or groundwater.
3. Graywater unsuitable for reuse or exceeding the volume required for reuse must be discharged to a
sanitary sewer or onsite wastewater treatment system.
4. Graywater may originate from a single family residence or residential duplex with no more than
four bedrooms.
5. The graywater system must be connected to a sanitary sewer or an onsite wastewater system.
6. Any person not wishing to be covered or limited by this permit may apply for an individual permit
in accordance with the procedures in OAR 340-045-0030.
HOW TO APPLY FOR COVERAGE UNDER THIS GENERAL PERMIT
Permit Application Requirements
1. A person seeking new registration under this permit must do the following:
a. Complete an application. Applicants may obtain a DEQ application form by:
i. Mail or in person from any DEQ regional office, or
ii. Downloading the application from the DEQ website.
b. Submit a completed application to the DEQ office identified below at least 30 days prior to
the planned activity:
Oregon Department of Environmental Quality
Attn: Business Office
700 NE Multnomah St., Suite 600
Portland, OR 97232
c. Submit all applicable fees specified in OAR 340-045-0070 with the application.
d. Satisfy all local permitting authority requirements, including but not limited to securing all
applicable building permits, plumbing permits and inspections.
2. A person currently registered will have continued permit coverage upon the effective date of this
permit if a timely and complete renewal application is received by DEQ on or before April 15,
2017.
Permit Renewal Requirements
1. Permittees registered under this General Permit can operate a graywater reuse and disposal system
until the expiration date provided on the cover page (unless coverage under the Permit is
terminated or extended under Other Application Conditions, below). A registered owner or
operator of a graywater reuse and disposal system seeking to continue coverage under this General
Permit after the expiration date must submit a complete renewal application form to DEQ no later
than March 2, 2027. DEQ may grant permission to submit the application after that date but in no
case may an application be submitted after the permit expiration date.
Other Application Conditions
1. Coverage under this permit will continue after the expiration date if the permittee submits a
complete renewal application, as described above, and DEQ has not issued a new permit.
2. If DEQ does not receive a renewal application, as described above, coverage under this General
Permit is terminated and all operations authorized under this permit must cease by removing the
graywater diversion device and directing all graywater flow to a wastewater disposal system.
3. Any person not wishing to be covered or limited by this General Permit may apply for an
individual permit in accordance with the procedures in OAR 340-045-0030.
Permit Number: 2401
Page 3 of 10
Notification of coverage
1. DEQ will notify the permittee of coverage under this general permit by sending a notice of
coverage and copy of the signed permit to the email address or mailing address provided on the
permit application. If the permittee elects to receive notification of coverage by email and DEQ is
unable to contact the permittee by email, notification of coverage will be sent to the mailing
address provide on the permit application.
DEFINITIONS
“Beneficial purpose or reuse” means graywater is used for a resource value, such as to provide moisture.
Examples include, but are not limited to, the irrigation of landscape vegetation, planters, greenhouses,
vegetated roofs, and compost.
“BOD5” means five-day biochemical oxygen demand.
“Evapotranspiration” means the combined loss of water from a given area, and during a specified period
of time, by evaporation from the soil surface and by transpiration from plants.
“Graywater” means shower and bath wastewater, bathroom sink wastewater, kitchen sink wastewater and
laundry wastewater. Graywater does not mean toilet or garbage wastes or wastewater contaminated by
soiled diapers.
“Type 1 graywater” means graywater that contains dissolved oxygen and may have passed
through primary graywater treatment, but has not passed through secondary graywater treatment.
“Graywater reuse and disposal system” means any existing or proposed graywater collection and
distribution system equipped with a diversion device that can direct graywater between beneficial reuse and
disposal.
“Graywater treatment” means the alteration of the quality of graywater by physical, chemical, or
biological means or combination thereof to reduce the risk of failure of the graywater reuse and disposal
system, degradation of water quality of the environment, and risk to public health.
“Primary graywater treatment” means a physical process to remove a portion of the grease, and
floatable and settleable solids from graywater.
“Secondary graywater treatment” means a chemical or biological process to remove a portion of
the dissolved or suspended biodegradable organic matter and other suspended solids.
“Irrigation” means the application of water to soil, mulch or compost usually to supplement precipitation
and supply moisture for the growth of vegetation or for the production of compost.
“mg/L” means milligrams per liter.
“Month” means a calendar month.
“Mulch” means a protective covering spread or left on the ground to reduce evaporation, maintain even
soil temperature, prevent erosion, control weeds or enrich the soil.
“Onsite wastewater treatment system” means any existing or proposed subsurface onsite wastewater
treatment and dispersal system including but not limited to a standard subsurface, alternative, experimental,
or nonwater-carried sewage system. It does not include systems that are designed to treat and dispose of
industrial waste as defined in OAR chapter 340, division 045.
Permit Number: 2401
Page 4 of 10
“Oxidized graywater” means a treated graywater in which the organic matter is stabilized, nonputrescible,
and contains dissolved oxygen.
“Residential strength wastewater” means septic tank effluent that does not typically exceed five-day
biochemical oxygen demand (BOD5) of 300 mg/L; total suspended solids (TSS) of 150 mg/L; total
Kjeldahl nitrogen (TKN) of 150 mg/L; oil & grease of 25 mg/L; or concentrations or quantities of other
contaminants normally found in residential sewage.
“Sewerage system” means pipelines or conduits, pumping stations, and force mains, and all other
structures, devices, appurtenances and facilities used for collecting or conducting wastes to an ultimate
point for treatment or disposal.
“Stormwater management structure” means both public and private structural stormwater controls such
as swales, infiltration basins, underground injection control (UIC) systems or similar structures intended to
infiltrate stormwater into the ground.
“Subsurface irrigation” means the slow release of water below the surface of soil, compost or mulch for
the purpose of supplying moisture.
“TSS” means total suspended solids.
“Vegetated roof” means a system of soil and vegetation that partially or completely covers the roof of a
building or man-made structure. Vegetated roofs are also known as living roofs, green roofs or eco-roofs.
“Waters of the state” include lakes, bays, ponds, impounding reservoirs, springs, wells, rivers, streams,
creeks, estuaries, marshes, inlets, canals, the Pacific Ocean within the territorial limits of the State of
Oregon and all other bodies of surface or underground waters, natural or artificial, inland or coastal, fresh
or salt, public or private (except those private waters which do not combine or effect a junction with natural
surface or underground waters), which are wholly or partially within or bordering the state or within its
jurisdiction.
SCHEDULE A
Graywater Reuse and Disposal Limitations
The permittee may construct, install, and operate a graywater reuse and disposal system pursuant to the
following limitations:
1. Beneficial Purposes. The permittee may reuse graywater only for the following beneficial
purposes:
a. Subsurface irrigation of gardens, lawns and landscape plants;
b. Subsurface irrigation of food crops, except root crops or crops that have edible portions
that touch graywater;
c. Subsurface irrigation of vegetated roofs that do not drain to stormwater management
structures; and
d. Subsurface irrigation of compost.
2. Prohibited Uses. The permittee may not use graywater for drinking, personal hygiene bathing,
showering, cooking, dishwashing, or maintaining oral hygiene.
3. Connection to wastewater disposal system required. The graywater reuse and disposal system
must be equipped with a graywater diversion valve that allows graywater flow to be directed
between beneficial reuse and either an approved sewerage system, or a functioning onsite
wastewater treatment system approved under OAR 340 Division 071. Graywater not suitable for
reuse as described in this permit or the rules under OAR 340 Division 053 as well as graywater
exceeding the volume needed for reuse must be diverted to a sewerage system or a functioning
onsite wastewater treatment system.
Permit Number: 2401
Page 5 of 10
4. No discharge to surface water or stormwater systems allowed. The permittee must not allow
graywater discharge to:
a. Surface waters of the state;
b. A municipal separate storm sewer system (MS4);
c. An industrial stormwater system; or
d. A stormwater management system including swales, infiltration basins, underground
injection control (UIC) systems, or other structures intended to infiltrate stormwater into
the ground.
5. No groundwater impacts allowed. The permittee must apply graywater at a rate and in a manner
that minimizes the movement of contaminants to groundwater and does not adversely impact
groundwater quality. At the time of irrigation, the minimum separation distance between the point
of graywater release and groundwater must be at least four feet.
6. Graywater limitations. The permittee must divert the following wastewaters to a sewerage system
or onsite wastewater treatment system:
a. Wastewater originating from kitchen sinks that has not passed through primary graywater
treatment;
b. Wastewater from dishwashers, garbage disposals, or both;
c. Wastewater resulting from the washing of soiled diapers or other similarly infectious or
soiled materials; and
d. Wastewater containing residual waste from activities such as, but not limited to, cleaning
of oily rags; rinsing of paint brushes; disposal of pesticides, herbicides, or other chemicals;
or disposal of waste solutions from hobbyist activities like home photo labs.
7. Graywater reuse and disposal system design. The graywater reuse and disposal system must be
designed to reuse the volume of water needed for a specified beneficial purpose or beneficial
purposes. Graywater in excess of the design flow must be diverted to an approved sewerage system
or a functioning onsite wastewater treatment system approved under OAR 340-071. The system
design must be documented in a written system design plan and transferred to the new owner or
operator on property transfer.
8. Graywater treatment and storage.
a. All graywater originating from kitchen sinks must pass through a physical process to
remove a portion of the grease, floatable and settleable solids.
b. Graywater may not be stored for more than 24 hours.
9. Setbacks. The graywater system must be designed, installed, and operated to meet the following
setbacks (in feet):
Point of graywater
Graywater storage
Feature requiring setback
discharge to
or surge tank
landscape
Groundwater supplies and wells
50
100
Springs
50
100
Surface water of the state, excluding springs
50
50
Stormwater management structures, collection
10
10
systems, and catch basins
Underground injection control systems (UICs)
10
10
Property boundaries
5
2
Building structures
0
0
10. Access and Exposure. The permittee must implement the following access and exposure controls
when using graywater:
a. All reasonable steps must be taken to ensure that contact with graywater by humans and
domestic pets is avoided.
Page of 10