reglab/statecodes huggingface dataset:
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 655 - Water Pollution Control Construction Standards [Revoked] › Subchapter 27 - Supplemental Treatment Processes [Revoked] › Section 252:655-27-7 - Land application of wastewater [REVOKED]

Current through Vol. 41, No. 20, July 1, 2024
Added at 11 Ok Reg 989,
				  eff 1-5-94 (emergency); Added at 11 Ok Reg 2211, eff 5-26-94; Revoked at 17 Ok
				  Reg 1140, eff 6-1-00
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 655 - Water Pollution Control Construction Standards [Revoked] › Subchapter 29 - Minimum Design Standards for Small Public Sewage Systems [Revoked] › Section 252:655-29-1 - General standards for small public sewage systems [REVOKED]

Current through Vol. 41, No. 20, July 1, 2024
Added at 11 Ok Reg 989,
				  eff 1-5-94 (emergency); Added at 11 Ok Reg 2211, eff 5-26-94; Amended at 13 Ok
				  Reg 2105, eff 7-1-96; Revoked at 14 Ok Reg 1069, eff 1-16-97 (emergency);
				  Revoked at 14 Ok Reg 1734, eff 6-2-97
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 655 - Water Pollution Control Construction Standards [Revoked] › Subchapter 29 - Minimum Design Standards for Small Public Sewage Systems [Revoked] › Section 252:655-29-2 - Subsurface disposal systems [REVOKED]

Current through Vol. 41, No. 20, July 1, 2024
Added at 11 Ok Reg 989,
				  eff 1-5-94 (emergency); Added at 11 Ok Reg 2211, eff 5-26-94; Revoked at 14 Ok
				  Reg 1069, eff 1-16-97 (emergency); Revoked at 14 Ok Reg 1734, eff
				  6-2-97
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 655 - Water Pollution Control Construction Standards [Revoked] › Subchapter 29 - Minimum Design Standards for Small Public Sewage Systems [Revoked] › Section 252:655-29-3 - Small lagoon systems [REVOKED]

Current through Vol. 41, No. 20, July 1, 2024
Added at 11 Ok Reg 989,
				  eff 1-5-94 (emergency); Added at 11 Ok Reg 2211, eff 5-26-94; Amended at 13 Ok
				  Reg 2105, eff 7-1-96; Revoked at 14 Ok Reg 1069, eff 1-16-97 (emergency);
				  Revoked at 14 Ok Reg 1734, eff 6-2-97
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 1 - Introduction › Section 252:656-1-1 - Applicability

Current through Vol. 41, No. 20, July 1, 2024
(a) This chapter sets the permit and
				construction standards for wastewater collection systems and treatment works.
				It does not apply to innovative technology (see 27A O.S. § 2-6-401), to
				small public sewage systems as defined in 27A O.S. § 2-6-101 (also see OAC
				252:641, Individual and Small Public On-Site Sewage Treatment Systems), nor
				does it apply to industrial wastewater (see OAC 252:606, Oklahoma Pollutant
				Discharge Elimination System (OPDES) Standards and OAC 252:616, Industrial
				Wastewater Systems). There are other rules that also may govern wastewater
				systems, such as OAC 252:621, Non-Industrial Flow-Through and Public Water
				Supply Impoundments; OAC 252:619, Operation and Maintenance of Non-Industrial
				Total Retention Lagoon Systems; OAC 252:627, Operation and Maintenance of Water
				Reuse Systems; OAC 252:515, Management of Solid Waste; and the federal OSHA
				standards.
(b) This chapter applies
				to any person or entity that constructs or modifies a wastewater collection
				system or treatment works that is not:
(1) a
				small public sewage treatment system as defined in 27A O.S. § 2-6-101,
				or
(2) an industrial wastewater
				system.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 1 - Introduction › Section 252:656-1-3 - Permit requirements

Current through Vol. 41, No. 20, July 1, 2024
(a)
Permit to construct.
No one shall construct, modify or put into
				operation a wastewater system or a water reuse system without first obtaining a
				permit to construct from DEQ. Permits to construct will not be issued for new
				Category 4 restricted golf course irrigation systems pending further research
				and evaluation of performance data collected from existing systems.
(b)
Permit to supply.
No one
				shall supply reclaimed water without first obtaining a permit to supply from
				DEQ, except when using reclaimed water within the wastewater treatment plant
				boundaries pursuant to Category 6.
Added at 29 Ok Reg 1061,
				  eff 7-1-12
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 3 - Permit Procedures › Section 252:656-3-1 - Permitting process

Current through Vol. 41, No. 20, July 1, 2024
(a) This Subchapter
				implements the permitting process of Part 4, Wastewater and Wastewater
				Treatment Systems, 27A O.S. § 2-6-401 et seq., and the Oklahoma Uniform
				Environmental Permitting Act, 27A O.S. § 2-14-101 et seq.
(b) Permits are required for the construction
				or modification of non-industrial wastewater and water reuse systems.
(c) The permit application is a two-step
				process:
(1) The first step is the submission
				of an engineering report (as described in
				252:656-3-4) ; and
(2) The second step is the submission of the
				final design report along with the required application forms and fees. The
				final design report shall:
(A) include 2 sets
				of plans and specifications, with at least one set of plans printed on 11" x
				17" paper and at least one set of specifications loosely bound and suitable for
				scanning, and
(B) reflect any
				changes from the approved engineering report. Provided, an authorized
				design-build project may use the flexible permitting process upon approval by
				DEQ as provided in these rules. If design-build is used, the final design
				package must encompass the entire completed
				project.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 3 - Permit Procedures › Section 252:656-3-2 - Applications

Current through Vol. 41, No. 20, July 1, 2024
(a)
Permit application
				requirements.
Applicants seeking permits to construct either a
				non-industrial wastewater or water reuse system shall submit the following to
				DEQ:
(1) an application;
(2) the appropriate fee;
(3) two (2) copies of an engineering report
				in compliance with OAC
				252:656-3-4;
(4) two (2) sets of plans and specifications;
				and
(5) documentation of adequate
				financial accountability.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 3 - Permit Procedures › Section 252:656-3-3 - Municipal exemptions

Current through Vol. 41, No. 20, July 1, 2024
(a) Municipalities
				may be exempted from construction permits for gravity wastewater collection
				lines no larger than 12 inches in diameter if they:
(1) Adopt and enforce an ordinance requiring
				all wastewater systems within their corporate limits to comply with applicable
				DEQ rules.
(2) Adopt and enforce an
				ordinance withholding approval of sewer line extensions to wastewater treatment
				works, lift stations, and interceptor lines which have reached treatment or
				hydraulic capacities.
(3) Retain an
				adequate number of competent full-time staff to review and approve plans and
				specifications for sewage collection systems. Such staff must include at least
				one engineer, in responsible charge, who must approve and then sign plans
				authorizing construction to proceed according to the approved plans.
(4) Have adequate inspection and enforcement
				staff and procedures to assure construction does not proceed before approval of
				or deviate from approved plans and specifications.
(5) Submit a quarterly status report to the
				DEQ that describes the current design capacity, additional loading capacity,
				effluent quality and the extent of sewage bypasses.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 3 - Permit Procedures › Section 252:656-3-6 - Revisions

Current through Vol. 41, No. 20, July 1, 2024
(a)
Approved plans.
(1)
Before contract is awarded.
Any changes from approved plans or specifications affecting capacity, flow or
				operation of units must be submitted to the DEQ as an addendum for review and
				approval. The DEQ must review and approve the submission before construction
				can commence based on the addendum.
(2)
After contract is awarded.
After a contract has been awarded, submit proposed changes from approved plans
				or specifications in the form of a Change Order, signed and sealed by an
				engineer, licensed by the State of Oklahoma. The permittee and the contractor
				must sign Change Orders. The DEQ must review and approve the submission of the
				proposed changes before construction can commence based on the Change
				Order.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 3 - Permit Procedures › Section 252:656-3-7 - Variances from construction standards

Current through Vol. 41, No. 20, July 1, 2024
(a) The policy of DEQ is to encourage better
				wastewater treatment methods and equipment, including the use of new
				technology. DEQ may approve processes or equipment not specifically covered by
				the standards in this Chapter provided the permittee requests a variance. A
				variance from the standards in this Chapter may be allowed, upon request of the
				applicant, if the DEQ finds the variance will not increase the likelihood of a
				system failure. No variance will be allowed unless it is noted on the
				construction permit.
(b) The
				consulting engineer shall justify the requested variance by submitting data
				showing the proposed processes or equipment will equal or exceed the
				performance of a procesess or equipment known to perform the same function
				according to the standards contained in this Chapter. Variance requests shall
				include the following:
(1) monitoring
				observations including:
(A) test results, and
				engineering evaluations, and
(B)
				data from existing installations that demonstrate the efficiency of the
				proposed processes or equipment;
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 3 - Permit Procedures › Section 252:656-3-8 - Financial responsibility [REVOKED]

Current through Vol. 41, No. 20, July 1, 2024
Added at 17 Ok Reg 1140,
				  eff 6-1-00; Amended at 28 Ok Reg 1282, eff 7-1-11; Amended at 29 Ok Reg 1061,
				  eff 7-1-12
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 3 - Permit Procedures › Section 252:656-3-9 - Fees

Current through Vol. 41, No. 20, July 1, 2024
(a) Permits will not be issued until all fees
				are paid unless a monthly billing agreement with the DEQ and the permittee is
				current.
(b) Fees for treatment
				works construction are based on design flow and are as follows:
(1) New facilities and major modifications
				that alter the original design or the design capacity:
(A) 1.0 MGD and greater $5,440.00
(B) 0.50 MGD - 0.99 MGD $4,080.00
(C) 0.10 MGD - 0.49 MGD $2,720.00
(D) 0.01 MGD - 0.09 MGD $1,360.00
(E) less than 0.01 MGD $680.00
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 3 - Permit Procedures › Section 252:656-3-10 - Operation and Maintenance (O & M) Manual

Current through Vol. 41, No. 20, July 1, 2024
Within ninety (90) days of the completion of the
				  construction, the applicant must submit to the DEQ an O & M Manual for the
				  operation and maintenance of the wastewater treatment system or the water reuse
				  system. The O & M Manual must include at a minimum:
(1) System Treatment Requirements;
(2) Current NPDES Permit wasteload
				requirements to water quality sections of OAC 252:606 including 208 Plan
				requirements;
(3) Description,
				Operation and Control of the Treatment Works;
(4) Control of Unit Processes;
(5) Laboratory Testing;
(6) Common Operating Problems;
(7) Start-Up Testing and
				Procedures;
(8) Normal Operating
				Procedures;
(9) Alternative and
				Emergency Operations;
(10)
				Emergency Shutdown Operations and Emergency Response;
(11) Records Control and Retention;
(12) Safety;
(13) Wastewater Treatment System Maintenance
				Requirements and/or Water Reuse System Maintenance Requirements;
(14) Spare Parts and Chemical Inventory
(15) Reclaimed water storage and
				distribution system flushing plan to prevent slime growth, regrowth of
				pathogens and water age;and
(16)
				Best Management Practices for Category 6 uses within a wastewater treatment
				plant.
Added at 28 Ok Reg 1282,
				  eff 7-1-11; Amended at 29 Ok Reg 1061, eff
				  7-1-12
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 5 - Sanitary Sewer Standards › Section 252:656-5-1 - Design capacity

Current through Vol. 41, No. 20, July 1, 2024
Design sewers for the ultimate future population that may be
				  served.
(1) Consider the maximum
				hourly domestic flow, industrial flow, inflow and infiltration and the
				topography regarding the slope and pumping needs.
(2) Design for an average daily per capita
				flow of 100 gpd, which includes normal infiltration. Peak design flow must be
				based on an acceptable infiltration/inflow (I/I) study or, for new sewer
				extensions, the ratio of peak to average daily flow from a widely recognized
				engineering standard.
(3) Exclude
				storm water from roof drains, streets and other areas.
Added at 17 Ok Reg 1140,
				  eff 6-1-00; Amended at 23 Ok Reg 937, eff
				  6-15-06
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 5 - Sanitary Sewer Standards › Section 252:656-5-2 - Design standards

Current through Vol. 41, No. 20, July 1, 2024
(a)
Standard.
Design and construct sewers with hydraulic slopes
				sufficient for obtaining a velocity of 2 fps (feet per second) or greater. Base
				the design on Manning's formula using an "n" value of 0.013. Gravity sewers
				shall not be smaller than 8-inch diameter, except those sewer lines meeting the
				requirements in Subchapter (c) below.
(b)
Slope.
The depth of flow and
				the slope of the conduit affects the velocity of a liquid flowing under gravity
				conditions. The following table gives minimum slopes for different sizes of
				pipe to meet the required flow velocity.
(1)
				4" sewer: 1.00 feet/100 feet
(2) 6"
				sewer: 0.50 feet/100 feet
(3) 8"
				sewer: 0.40 feet/100 feet
(4) 10"
				sewer: 0.29 feet/100 feet
(5) 12"
				sewer: 0.22 feet/100 feet
(6) 14"
				sewer: 0.17 feet/100 feet
(7) 15"
				sewer: 0.15 feet/100 feet
(8) 16"
				sewer: 0.14 feet/100 feet
(9) 18"
				sewer: 0.12 feet/100 feet
(10) 21"
				sewer: 0.10 feet/100 feet
(11) 24"
				sewer: 0.08 feet/100 feet
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 5 - Sanitary Sewer Standards › Section 252:656-5-3 - Materials

Current through Vol. 41, No. 20, July 1, 2024
(a)
ASTM.
All pipe, materials
				and construction must meet ASTM standards. List the standard for all materials
				and methods in the detailed specifications.
(b)
Bedding.
Specify the
				applicable ASTM material class of bedding, which must be matched to the proper
				strength pipe to support the anticipated loads.
(c)
Backfill.
Specify the
				applicable ASTM standard for the backfill material and its placement.
(d)
Manholes.
Specify the
				applicable ASTM standards for the manhole material, manhole installation and
				manhole testing to be used in the construction of the manholes. Bricks and/or
				concrete blocks will not be approved for manhole construction.
Added at 17 Ok Reg 1140,
				  eff 6-1-00; Amended at 23 Ok Reg 937, eff 6-15-06; Added at 28 Ok Reg 1282, eff
				  7-1-11
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 5 - Sanitary Sewer Standards › Section 252:656-5-4 - Construction standards

Current through Vol. 41, No. 20, July 1, 2024
(a)
Sewer.
Lay sewers in straight alignment with uniform grade between
				manholes. Protect all pipe from traffic load damage. Install metal tracer wire
				on all non-ferrous piping.
(b)
Trench.
The width of the trench shall be ample to allow the pipe
				to be laid and joined properly and to allow the backfill to be placed and
				compacted as needed.
(1) Trench sides shall
				be kept as nearly vertical as possible. When wider trenches are dug,
				appropriate bedding class and pipe strength shall be used.
(2) Provide a minimum clearance of 4 inches
				between all pipe and any large stones, ledge rock, or boulders.
(3) Except for ductile iron pipe, provide 30
				inches of soil cover as protection from traffic load damage to the pipe.
				Specify the applicable ASTM standards for ductile iron pipe.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 5 - Sanitary Sewer Standards › Section 252:656-5-5 - Tests

Current through Vol. 41, No. 20, July 1, 2024
(a)
Deflection test.
Perform
				deflection tests on all flexible pipe after the final backfill has been in
				place at least 30 days. Deflection must not exceed 5%. Tests must be run using
				a rigid ball or mandrel with a diameter equal to 95% of the inside diameter of
				the pipe taking into account manufacturing tolerances. Tests must be performed
				without mechanical pulling devices. Specify the applicable ASTM standard for
				the test to be used.
(b)
Leakage test.
Leakage tests are required for all gravity lines.
				Hydrostatic tests must use a 2-foot test head and leakage inward or outward
				must not exceed 10 gallons per inch of pipe diameter per mile per day. Specify
				the applicable ASTM standard for the test to be used. The procedures listed in
				the
Handbook of PVC Pipe,
Uni-Bell PVC Pipe Association, 2001
				may be used for PVC pipe. An air test result must assure a leakage limit
				equivalent to the hydrostatic test limit.
Added at 17 Ok Reg 1140,
				  eff 6-1-00; Amended at 23 Ok Reg 937, eff 6-15-06; Added at 28 Ok Reg 1282, eff
				  7-1-11
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 7 - Pump Station Standards › Section 252:656-7-1 - Pump station design

Current through Vol. 41, No. 20, July 1, 2024
(a) Required
				design factors for pumping stations are:
(1)
Emergency plan.
Provide an emergency plan for handling sewage
				should the lift station completely fail. Required emergency operations are in
				252:656-7-4.
(2)
Separate wells.
Wet and dry
				wells must be completely separated, each with its own entrance.
(3)
Equipment accessibility and
				safety.
Provide a suitable stairway or ladder for dry wells and for wet
				wells with bar screens or mechanical equipment. Adequate provision must be made
				to effectively protect maintenance personnel from hazards. Equipment for
				confined space entry in accordance with OSHA and regulatory agency requirements
				must be provided for all wastewater pumping stations. The design of the system
				must protect the pump station controls and appurtenances from unauthorized
				access and vandalism. Provide a building or other form of protection such as
				fencing or access hatches with locks. The design of the system must prevent
				unauthorized access or vandalism to control system and equipment.
(4)
Equipment removal.
Provide
				for removal of pumps, motors, and other mechanical and electrical equipment
				during all weather conditions.
(5)
Dry well dewatering.
Provide a sump pump in dry wells to remove
				leakage or drainage. The discharge pipe shall terminate above the overflow
				level of the wet well and include a check valve located near the pump. Do not
				connect water ejectors to a potable water supply. Slope all floor and walkway
				surfaces to the sump. Pump seal water shall be piped to the sump.
(6)
Flood Protection.
Wastewater
				pumping stations structures and electrical and mechanical equipment shall be
				protected from physical damage by the 100 year flood and shall not be located
				in a flood way. Wastewater pumping stations shall remain fully operational and
				accessible during the 25 year flood. Regulations of state and federal agencies
				regarding flood plain obstructions shall be followed.
(7)
Buoyancy.
Where high
				groundwater conditions are anticipated, buoyancy of the wastewater pumping
				station structures shall be considered and, if necessary, adequate provisions
				shall be made for protection.
(8)
Pump station accessibility and security.
The pumping station must
				be readily accessible by maintenance vehicles during all weather conditions and
				must be located off the traffic ways of streets and alleys.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 7 - Pump Station Standards › Section 252:656-7-2 - Suction lift pumps

Current through Vol. 41, No. 20, July 1, 2024
The pump equipment compartment shall be above grade or offset
				  and effectively isolated from the wet well. Wet well access shall not be
				  through the equipment compartment. Valving shall not be located in the wet
				  well. The combined total of dynamic suction lift at the "pump off" elevation
				  and required net positive suction head at design operating conditions shall not
				  exceed 22 feet.
(1) Self-priming pumps
				shall be capable of rapid priming and repriming at the "lead pump on"
				elevation. Suction piping should not exceed the size of the pump suction and
				shall not exceed 25 feet in total length. Priming lift at the "lead pump on"
				elevation shall include a safety factor of at least 4 feet from the maximum
				allowable priming lift for the specific equipment at design operating
				conditions.
(2) Vacuum-priming pump
				stations shall be equipped with dual vacuum pumps capable of automatically and
				completely removing air from the suction lift pump. The vacuum pumps shall be
				adequately protected from damage due to sewage.
Added at 17 Ok Reg 1140,
				  eff 6-1-00
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 7 - Pump Station Standards › Section 252:656-7-3 - Submersible pump stations

Current through Vol. 41, No. 20, July 1, 2024
Submersible pump stations shall meet the applicable
				  requirements under OAC
				  252:656-7-1(design),
				  except as provided in this section.
(1)
Construction.
Submersible
				pumps and motors must be designed specifically for raw sewage use, including
				totally submerged operation during a portion of each pumping cycle. Provide an
				effective method to detect shaft seal failure or potential seal failure. The
				motor shall be of squirrel-cage type design without brushes or other
				arc-producing mechanisms.
(2)
Pump removal.
Submersible pumps shall be readily removable and
				replaceable without dewatering the wet well or manually disconnecting any
				piping in the wet well.
(3)
Electrical.
(A)
Power
				supply and control.
Electrical supply, control and alarm circuits shall
				be designed to provide strain relief and to allow disconnection from outside
				the wet well. Terminals and connectors shall be protected from corrosion by
				location outside the wet well or through use of watertight seals. If the
				location is not sheltered, use weatherproof equipment.
(B)
Controls.
Locate the motor
				center outside the wet well. Protect it by a conduit seal or other appropriate
				measures meeting National Electrical Code requirements to prevent the
				atmosphere of the wet well from gaining access to the control center. The seal
				shall be so located that the motor may be removed and electrically disconnected
				without disturbing the seal.
(C)
Power cord.
Pump motor power cords shall be designed for
				flexibility and serviceability under conditions of extra hard usage and shall
				meet the requirements of the National Electrical Code standards for flexible
				cords in wastewater pump stations. Power cord terminal fittings shall be
				corrosion-resistant and constructed in a manner to prevent the entry of
				moisture into the cable, provided with strain relief appurtenances and designed
				to facilitate field connection.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 7 - Pump Station Standards › Section 252:656-7-4 - Emergency operation

Current through Vol. 41, No. 20, July 1, 2024
(a)
Design.
Design pumping stations to prevent bypassing of raw sewage
				during periods of power outage or mechanical failure. The pumping station must
				meet one of the following design conditions:
(1) an on-site standby generator with
				automatic means of activation in the event of a power failure;
(2) a portable engine-driven pump with a
				quick connection to the force main; four hours of emergency storage at the
				average design flow above the alarm level; and telemetry to the city office
				during working hours and to the home of the person(s) in responsible charge of
				the lift station during off-duty hours;
(3) 24 hours of emergency storage at the
				average design flow above the alarm level with an audio/visual alarm
				system;
(4) an on-site
				engine-driven pump with one hour of emergency storage at design flow above the
				alarm level and an automatic means of activation; or
(5) a portable engine-driven generator with
				four (4) hours of emergency storage at the design flow above the alarm level, a
				telemetry alarm system that communicates to the person in charge of the lift
				station, and a transfer switch with electrical system components that comply
				with the National Electrical Code requirements that is pre-wired to allow for a
				ready connection between the lift station and the portable generator.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 9 - General Standards › Section 252:656-9-1 - Plant location and design life

Current through Vol. 41, No. 20, July 1, 2024
(a)
Minimum separation distances.
Local ordinances and zoning
				requirements may establish separation distances greater than those required by
				this Chapter. The minimum separation distance from any public water supply well
				is 300 feet. The minimum distance requirements from any public water supply
				intake structure will be determined on a case by case basis. No part of any
				wastewater treatment or conveyance unit shall be constructed or extended within
				100 feet of a plant site property line. Measurement for lagoons shall be from
				the centerline of the nearest dike.
(b)
Flood protection.
Protect
				the treatment works structures, electrical and mechanical equipment from
				physical damage by a 100-year flood. Treatment works must remain operational
				and be accessible during a 25-year flood. Flood protection applies to new
				construction and to existing facilities undergoing major
				modification.
(c)
Design
				life.
Design sewage treatment plants for an estimated 20-year population
				projection. Construction may occur in phases to reduce initial cost.
(d)
Phased.
For facilities to be
				built in phases, the engineer shall furnish design data for ultimate plant
				capacity. The data shall include size, type, loading and location of all units.
				Use dashed lines to show units that are to be constructed as a later phase.
				Furnish a hydraulic profile showing the water elevations of all units and the
				flood elevation of streams that can affect the plant site. Detailed design data
				are required for all units to be constructed as Phase I.
(e)
Access Restriction.
All
				facilities must be fenced to prevent unauthorized entry. Fencing must be posted
				with warning signs to indicate the nature of the facility, listing emergency
				contact information. Post at least one sign on each side of the site.
Added at 17 Ok Reg 1140,
				  eff 6-1-00; Amended at 23 Ok Reg 937, eff 6-15-06; Added at 28 Ok Reg 1282, eff
				  7-1-11
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 9 - General Standards › Section 252:656-9-2 - Essential facilities

Current through Vol. 41, No. 20, July 1, 2024
(a)
Emergency
				power facilities.
All plants shall provide standby equipment which will
				generate electric power to allow continuity of operation, including but not
				limited to pumping, aeration and disinfection, during power failures.
(b)
Water supply.
(1)
General.
Provide potable
				water under pressure to laboratories, restrooms, offices, drinking fountains
				and showers. Cross-connections between potable and non-potable water lines is
				prohibited.
(2)
Direct
				connections.
Potable water from a municipal or separate supply may be
				used directly at points above grade. Hot water shall not be taken directly from
				a boiler used for supplying hot water to a sludge heat exchanger or digester
				heating unit.
(3)
Indirect
				connections.
Where a potable water supply is to be used for any purpose
				in a plant other than those listed in paragraph (1), above, provide a break
				tank, pressure pump, and pressure tank. Discharge water to the break tank
				through an air gap at least six inches above the maximum flood line or the
				spill line of the tank, whichever is higher. Post a permanent sign at every
				hose bib, faucet, hydrant, or sill cock located on the water system beyond the
				break tank to indicate that the water is not safe for drinking. The
				installation of a reduced pressure zone backflow prevention device will be
				considered in lieu of the break tank. To allow maintenance on the backflow
				prevention device, the design shall include a bypass line with equal backflow
				prevention. Do not locate back-flow devices in a pit or vault where they may
				become submerged; they must be easily accessible for routine testing for proper
				operation.
(4)
Non-potable
				water outlets.
Post a permanent sign at non-potable water outlets
				indicating the water is not safe for drinking.
(5)
Prevention of
				cross-connections.
Do not allow a physical connection between potable
				water lines, sanitary sewer lines and/or reclaimed water lines unless a break
				tank is provided. All water discharged to a break tank shall be discharged
				through an air gap at least six inches (6") above the maximum flood line or the
				spill line of the tank, whichever is higher.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 9 - General Standards › Section 252:656-9-3 - Plant outfalls

Current through Vol. 41, No. 20, July 1, 2024
(a)
Entrance
				impact control.
All wastewater treatment facilities designed to
				discharge treated wastewater shall provide an outfall sewer pipe to a defined
				water course. Provide the following when designing outfall lines:
(1) Dispersion of the effluent across the
				stream as needed to protect aquatic life; and
(2) Access for effluent sampling.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 11 - Lagoon Standards › Section 252:656-11-1 - Lagoon siting

Current through Vol. 41, No. 20, July 1, 2024
(a)
Winds.
Locate lagoons to minimize wind obstructions.
(b)
Surface runoff.
Do not
				locate lagoons in floodways. Divert storm water runoff around lagoons and
				protect embankments from erosion.
(c)
Hydrology.
Use sound
				sanitary and engineering practices to protect groundwater aquifers and public
				water supplies from pollution from lagoons. Maintain a 4-foot separation
				between the lagoon bottom and the highest known groundwater
				elevation.
(d)
Geology.
Lagoons shall not be located in areas that are subject to
				karstification (i.e., sink holes or underground streams generally occurring in
				areas underlain by limestone, gypsum or dolomite). There shall be a 4-foot
				separation between the lagoon bottom and any bedrock formation.
Added at 17 Ok Reg 1140,
				  eff 6-1-00; Amended at 23 Ok Reg 937, eff
				  6-15-06
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 11 - Lagoon Standards › Section 252:656-11-2 - Basis of design

Current through Vol. 41, No. 20, July 1, 2024
(a)
Facultative Lagoons.
Facultative lagoons depend on the
				relationship between organic loading and surface area (algal photosynthesis) or
				on surface area and supplemental mechanical aeration to provide an aerobic
				layer of water at the surface. Facultative lagoons may be either total
				retention or flow-through (discharge) to waters of the state.
(b)
Flow-through lagoons.
(1)
Organic loading.
Limit the
				organic load to 35 pounds BOD per acre (water surface area) per day for any
				cell depending solely on algal photosynthesis for oxygen. The total water
				surface area requirement based on organic loading is calculated at the average
				water depth. Flow-through lagoon systems will not consistently provide ammonia
				removal through the nitrification process so the effluent from these facilities
				may be toxic to aquatic life and thus cause whole effluent toxicity test
				failures.
(2)
Flow
				Control.
Provide at least two primary cells on new systems. Design the
				primary cells so they may be operated in either series or in parallel, with at
				least 60 days retention time. Provide at least two secondary cells operating in
				series with the primary cells and in series with each other. Provide a bypass
				line around any secondary cell in a series to the next cell. The secondary
				cells shall have at least 60 days detention for a total of at least 120 days
				detention in the system.
(3)
Depth.
The maximum water depth shall not exceed 6 feet in primary
				cells and 10 feet in secondary cells. Provide structures to allow the primary
				cells to operate between four foot depth and the maximum design depth plus
				three feet of freeboard. The operating depth for a flow-through lagoon shall be
				between 4 and 6 feet.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 11 - Lagoon Standards › Section 252:656-11-4 - Other lagoon construction

Current through Vol. 41, No. 20, July 1, 2024
(a)
Fence.
Enclose the lagoon area within a fence to discourage
				livestock and trespassers. Fences must have a lockable gate and not obstruct
				maintenance vehicles and equipment. Lagoons located within 350 feet of existing
				or platted residential or recreational areas shall be enclosed with a 6-foot
				high woven wire fence. Decorative fences around facilities located in
				recreational areas will be considered on a case-by-case basis.
(b)
Access.
Provide an
				all-weather access road to the lagoon site.
(c)
Warning signs.
Provide
				appropriate permanent signs along the fence around the lagoon site that
				designate the nature of the facility and advise against trespassing. Place at
				least one sign on each side of the site. The warning sign shall include the
				name of the owner and a contact number for the owner.
(d)
Flow measurement.
Flow
				measurement requirements are presented in
				252:656-9-2(d).
				Provide effective weather protection for recording equipment.
(e)
Pond level gauges.
A pond
				level gauge to measure the water level in a lagoon shall be
				installed.
Added at 17 Ok Reg 1140,
				  eff 6-1-00; Amended at 23 Ok Reg 937, eff
				  6-15-06
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 13 - Preliminary Treatment Standards › Section 252:656-13-1 - Screening devices

Current through Vol. 41, No. 20, July 1, 2024
(a)
Required.
Screening devices are required at all mechanical
				treatment plants.
(b)
Bar
				screens.
Bar screens shall comply with the following:
(1)
Flow measurement.
Locate
				screening devices so that changes in backwater elevations due to intermittent
				cleaning of screens will not interfere with flow measuring equipment.
(2)
Size.
Clear openings between
				bars shall not be greater than 1 3/4 inches. Screens shall be designed to be
				easily raked.
(3)
Slope.
Hand-cleaned screens, except those for emergency use, shall
				slope 30 to 45 degrees from horizontal.
(4)
Channels.
Shape the channels
				before and after screens to prevent sedimentation of solids. The channel
				entrance to the screens must evenly distribute the flow to minimize
				turbulence.
(5)
Controls.
All mechanical units operated by timing devices shall
				have auxiliary controls to start operation at predetermined high water
				elevations. Automatic controls shall have a manual override.
(6)
Screenings.
Hand-cleaned
				screens must have a platform with suitable drainage and ample facilities for
				removal, handling, storage and disposal of screenings.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 13 - Preliminary Treatment Standards › Section 252:656-13-2 - Grit chambers

Current through Vol. 41, No. 20, July 1, 2024
(a)
Where
				required.
Grit chambers are required at all mechanical sewage treatment
				plants, ahead of pumps and other equipment that may be damaged by
				grit.
(b)
Outside
				facilities.
Protect grit removal facilities located outside from
				freezing.
(c)
Chamber
				design.
(1) Rectangular horizontal-flow
				grit chambers shall be designed to regulate velocity to minimize organic matter
				deposition. Channels shall be designed for velocities of 0.8 to 1.3 fps, with a
				total detention time of 20 seconds to one minute.
(2) Aerated grit chambers shall be designed
				for a detention time of two (2) to five (5) minutes. Aerated grit chambers
				shall be sized in accordance with Appendix A.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 13 - Preliminary Treatment Standards › Section 252:656-13-3 - Diurnal flow equalization

Current through Vol. 41, No. 20, July 1, 2024
(a)
General.
Provide flow equalization basins to equalize variations
				in organic and hydraulic loadings where large diurnal organic or hydraulic
				variations of organic or hydraulic loading are expected, where peak to average
				is greater than 2:1. Wet weather (excess flow) basins are covered in
				252:656-13-4.
(b)
Location.
Locate basins
				downstream of pretreatment facilities such as bar screens and grit
				chambers.
(c)
Size.
Capacity must be sufficient to reduce expected flow and load variations to less
				than or equal to 2:1. The volume required to achieve the desired degree of
				equalization can be determined from a cumulative flow plot over a
				representative 24-hour period.
(d)
Operation.
(1)
Mixing.
Provide airor mechanical equipment to maintain adequate
				mixing. Design corner fillets and hopper bottoms with draw-offs to alleviate
				the accumulation of sludge and grit.
(2)
Aeration.
Aeration equipment
				shall be sufficient to maintain a minimum of 1.0 mg/l of dissolved oxygen in
				the basin at all times. Air supply rates shall be at least 1.25 cfm/1,000
				gallons of storage capacity. Isolate the air supply from other treatment plant
				aeration requirements to facilitate process aeration control.
(3)
Controls.
Equip inlets and
				outlets for all basin compartments with flow control devices. Provide
				facilities to measure and indicate liquid levels and flow rates leaving the
				basin(s).
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 13 - Preliminary Treatment Standards › Section 252:656-13-4 - Wet weather flow equalization basins

Current through Vol. 41, No. 20, July 1, 2024
(a)
Basin type.
For gravity
				inlet systems, provide flow splitting or automated flow diversion devices to
				divert excess flows to the flow equalization basin(s). Design shall include a
				method to return contents to primary basins. For pumped systems, installation
				of control valves or dedicated pumps to handle wet weather flow shall be used
				to divert wet weather flow to the basin. Depending on the elevation of the
				basin, it may be possible to return the flow to the plant's primary units by
				gravity. If not, a pump return system will be necessary.
(b)
Design criteria.
The design
				of basins requires a thorough evaluation of flow patterns and volumes. Items to
				be considered are basin geometry, construction materials, storage capacity and
				operational controls.
(c)
Basin layout.
Basins designed for storage of five million gallons
				or more require a minimum of two compartments designed to operate in series.
				All flow must be diverted to a lined basin where solids can settle and, at a
				predetermined elevation, overflow to additional basins. A single basin equipped
				with an impervious liner is acceptable where the required storage capacity is
				less than five million gallons. Provisions are required for returning the
				contents of the basins to the treatment plant and for removal of settled
				solids.
(d)
Basin
				construction.
Basin construction must be in accordance with OAC
				252:656-11-3
				and OAC
				252:656-11-4
				with the following exceptions:
(1) Top of
				dikes may be reduced to a width of 6 feet.
(2) Bottoms of lagoon cells shall be
				adequately sloped to allow drainage to waste return structure(s).
(3) For basins with two compartments, the
				first basin must be lined below the maximum design water elevation with
				concrete, asphalt, or equivalent material. Single compartment basins must be
				lined as above.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 15 - Biological Treatment Standards [Revoked] › Section 252:656-15-1 - Suspended growth systems [REVOKED]

Current through Vol. 41, No. 20, July 1, 2024
Added at 17 Ok Reg 1140,
				  eff 6-1-00; Revoked at 23 Ok Reg 937, eff
				  6-15-06
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 15 - Biological Treatment Standards [Revoked] › Section 252:656-15-2 - Attached growth systems [REVOKED]

Current through Vol. 41, No. 20, July 1, 2024
Added at 17 Ok Reg 1140,
				  eff 6-1-00; Revoked at 23 Ok Reg 937, eff
				  6-15-06
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 15 - Biological Treatment Standards [Revoked] › Section 252:656-15-3 - Biological nutrient removal [REVOKED]

Current through Vol. 41, No. 20, July 1, 2024
Added at 17 Ok Reg 1140,
				  eff 6-1-00; Revoked at 23 Ok Reg 937, eff
				  6-15-06
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 656 - Water Pollution Control Facility Construction Standards › Subchapter 16 - Biological Treatment Standards › Section 252:656-16-1 - Suspended growth systems

Current through Vol. 41, No. 20, July 1, 2024
(a)
General.
Suspended growth wastewater treatment systems generally
				consist of one or more basins where incoming wastewater is mixed with mixed
				liquor suspended solids and aerated for a period of time. The mixed liquor
				suspended solids are then separated from the mixture where a portion is
				returned to the mixing basin and the remainder diverted to other units for
				additional treatment before beneficial re-use by land application or landfill
				disposal. The liquid after separation from the solid is discharged or diverted
				to other units for additional treatment before discharge. Suspended growth
				systems covered by these standards are commonly know as the Activated Sludge
				process including the Sequencing Batch Reactor ("SBR") process. The activated
				sludge process includes several modifications. The most common is the extended
				aeration process which includes the oxidation ditch and SBR variations. Submit
				a complete design analysis for all suspended growth systems to DEQ for review.
				Contact stabilization is not recommended as the only secondary treatment
				process, but may be considered where equalization of flow is provided or where
				other treatment units follow.
(b)
Primary treatment.
The conventional activated sludge process must
				be preceded by primary treatment in the form of a primary clarifer(s) in
				accordance with 252:656-17. Provide equipment necessary to adequately remove
				sludge as it accumulates and transport it to sludge treatment
				facilities.
(c)
System
				Design.
Submit a comprehensive discussion of all functional design
				calculations used to size activated sludge treatment facilities. Include the
				following:
(1) influent wastewater
				characteristics,
(2) temperature
				range of wastewater,
(3) primary
				treatment of the waste,
(4)
				hydraulic and organic loading applied to the aeration basin,
(5) anticipated mixed liquor suspended solids
				level to be maintained in the aeration basin,
(6) aeration time,
(7) oxygen and mixing requirements for
				average and peak flows,
(8)
				recirculation and sludge wasting,
(9) degree of treatment anticipated,
				and
(10) equation(s) used to
				compute treatment efficiency.