reglab/statecodes huggingface dataset:
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 3 - Permit Procedures › Section 252:626-3-5 - Individual waterline construction permit exceptions

Current through Vol. 41, No. 20, July 1, 2024
(a)
General.
A construction
				permit exception is allowed under 27A O.S. § 2-6-304. The PWS must:
(1) adopt and enforce an ordinance or rule
				requiring all water line extensions be constructed in accordance with this
				Chapter,
(2) be in compliance with
				OAC 252:631 and 626 during the 12 months prior to the request for permit
				exception or document that all instances of non-compliance have been
				corrected,
(3) submit a separate
				application for each proposed exception from the permit requirement,
(4) submit an application, on DEQ forms, and
				the following information:
(A) a general
				layout sheet as described in OAC
				252:626-3-7,
(B) the location of proposed
				extension,
(C) the diameter of
				proposed extension,
(D) the length
				of proposed extension,
(E) the
				maximum number of service connections allowable without adversely affecting
				system performance,
(F) the
				location of proposed fire hydrants, and
(G) a certification that the proposed design
				and construction meets or exceeds DEQ standards, and
(5) after construction completion, submit a
				sufficiency certification, on forms provided or approved by the DEQ, to the
				DEQ, executed by an Engineer, except in the case of a single connection rural
				waterline extension certification, which may be executed by a Certified
				waterworks operator, prior to commencement of service. Such certificate must
				provide assurances that the integrity and capacity of the existing system will
				not or have not been compromised.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 3 - Permit Procedures › Section 252:626-3-6 - Engineering report

Current through Vol. 41, No. 20, July 1, 2024
(a)
Copies
				and timing.
Submit 3 copies of an approvable engineering report as
				required in OAC
				252:626-3-2 for proposed new
				construction or modifications to PWS systems, at least 30 days prior to the
				submission of the application for a permit to construct.
(b)
Purpose.
The purpose of the
				report is to present the Engineer's findings with enough attention given to
				detail(s) to allow adequate review of the project by the owner and applicable
				regulatory agencies.
(c)
Requirements.
The report must include all information necessary
				for a comprehensive evaluation of the proposed construction. The report must
				present, at a minimum, the following:
(1)
General information.
Include the following:
(A) a description of existing water works and
				wastewater facilities,
(B)
				identification of the municipality or area served,
(C) name and mailing addresses of the owner
				and official custodian,
(D) a
				statement as to whether the project will be constructed in phases. If the
				project is to be constructed in phases, the statement will include the number
				of phases necessary to complete the project and which portions of the project
				will be completed in each phase,
(E) a demonstration that adequate capacity,
				treatment and compliance with the primary drinking water standards are
				maintained during construction,
(F)
				a letter from the permittee approving the contents contained in the engineering
				report as submitted,
(G) a map
				showing legal and natural boundaries of entire service area, and
(H) a map showing new service areas or
				annexed areas.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 3 - Permit Procedures › Section 252:626-3-7 - Plans and specifications

Current through Vol. 41, No. 20, July 1, 2024
(a) Plans and
				specifications must address the entire project pursuant to the approved
				engineering report as required in OAC
				252:626-3-2. If the applicant
				plans to phase construction, the approved engineering report shall contain a
				description of each phase of the project and the sequence of construction to
				ensure continuity of the system and that adequate capacity will be available
				for each phase.
(b) All detailed
				plans must be legible and drawn to a suitable scale. Plans for modifications or
				extensions to existing systems or plants must indicate clearly the connections
				or relation. Include the following:
(1) A
				general layout sheet that includes:
(A) title
				and date,
(B) name of municipality,
				rural water district, or other entity or person who owns the system,
(C) area or institution to be
				served,
(D) scale, in
				feet,
(E) north point,
(F) data used,
(G) boundaries of the municipality, rural
				water district, or area to be served,
(H) name, telephone number, and address of
				the designing engineer,
(I) the
				Engineer's seal and signature,
(J)
				location and size of existing water mains, and
(K) location and nature of existing water
				works structures and appurtenances affecting the proposed
				improvements.
(L) authorized
				design-build projects must label cover documents prominently as "Design-build"
				specify the design package number, and reference the approved engineering
				report number.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 3 - Permit Procedures › Section 252:626-3-8 - Variances from construction standards

Current through Vol. 41, No. 20, July 1, 2024
(a) The policy of DEQ is to encourage better
				water 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 the 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 processes 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 626 - Public Water Supply Construction Standards › Subchapter 3 - Permit Procedures › Section 252:626-3-9 - Construct according to plans and specifications

Current through Vol. 41, No. 20, July 1, 2024
Applicants must construct facilities according to the plans
				  and specifications that are approved. Applicants must comply with the terms of
				  the permits that are issued. Permits may contain provisions more stringent than
				  these rules in order to meet drinking water standards contained in OAC 252:631.
				  Any changes to the approved plans and specifications must be submitted and
				  approved in writing by the DEQ. The permittee and the Engineer must sign the
				  documentation.
Added at 18 Ok Reg 1612,
				  eff 6-1-01
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 3 - Permit Procedures › Section 252:626-3-10 - Permit fees

Current through Vol. 41, No. 20, July 1, 2024
(a) Permits will
				not be issued until all fees are paid. Applicants may enter into a monthly
				billing agreement with the DEQ.
(b)
				Fees for water treatment facility construction permit applications are as
				follows:
(1) New facilities and major
				modifications that alter the original design or the design capacity:
(A) Non-community systems (new) -
				$722.00
(B) Community systems (new)
(i) less than 10 MGD - $2,910.00
(ii) 10 MGD or greater design flow -
				$5,825.00
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 5 - General Design › Section 252:626-5-1 - Plant layout

Current through Vol. 41, No. 20, July 1, 2024
Include the following in the approvable plans:
(1) functional aspects,
(2) provisions for expansion where
				applicable,
(3) provisions for WTP
				residuals treatment and disposal,
(4) site grading and drainage,
(A) prevent surface water from standing
				within 50 feet of any facility,
(B)
				disposal of surface water without danger of flooding any facility,
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 5 - General Design › Section 252:626-5-2 - Building layout

Current through Vol. 41, No. 20, July 1, 2024
Include the following in the approvable plans:
(1) adequate ventilation, lighting, heating,
				drainage and dehumidification,
(2)
				accessibility of equipment for operation, servicing, and removal,
(3) flexibility and convenience of operation
				and operator safety,
(4) chemical
				storage and feed equipment in separate rooms, and
(5) adequate facilities for shop space,
				laboratory space, and storage.
Added at 18 Ok Reg 1612,
				  eff 6-1-01; Amended at 25 Ok Reg 2304, eff
				  7-11-08
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 5 - General Design › Section 252:626-5-3 - Flood protection

Current through Vol. 41, No. 20, July 1, 2024
Locate all structures and mechanical and electrical equipment
				  above the 100-year flood plain unless other protective measures are provided.
				  Do not locate any structure in a flood way.
Added at 18 Ok Reg 1612,
				  eff 6-1-01; Amended at 25 Ok Reg 2304, eff
				  7-11-08
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 5 - General Design › Section 252:626-5-4 - Security protection

Current through Vol. 41, No. 20, July 1, 2024
Public water supply systems shall provide the following
				  security measures to protect water treatment plants, finished water storage
				  facilities (which include laboratories, chemical buildings, administration
				  buildings and storage buildings):
(1)
				Fencing at least six (6) feet high of galvanized steel chain link, number nine
				gauge with two inch or smaller diameter mesh, and posts not more than ten feet
				(10') separation center-to-center in post-holes at least thirty inches (30")
				deep, back-filled with concrete that extends two inches (2") above grade and
				crowned to shed water;
(2)
				Three-strand barbed wire shall be installed atop the fence along its entire
				length;
(3) Gates shall be
				constructed of similar material as the fence or stronger;
(4) "No Trespassing" signs shall be installed
				at least at fifty foot (50') intervals along the entire length of the fence and
				at the location of all intake structures. The signs shall contain the following
				information:
(A) "Tampering with a Public
				Water Supply is a federal crime", and
(B) "If you see a problem contact the
				following:
(i) Contact name,
(ii) Contact address,
(iii) Contact phone number"; and
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 5 - General Design › Section 252:626-5-5 - Standby power and elevated storage

Current through Vol. 41, No. 20, July 1, 2024
If 24 hours of elevated distribution storage based on
				  average daily demand is not available, provide all plants with portable or
				  in-place internal combustion engine equipment which will generate electric
				  power to allow continued operations, at peak hourly demand, during a power
				  failure.
Added at 18 Ok Reg 1612,
				  eff 6-1-01; Amended at 25 Ok Reg 2304, eff
				  7-11-08
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 5 - General Design › Section 252:626-5-6 - Laboratory facilities

Current through Vol. 41, No. 20, July 1, 2024
Each public water supply must have its own equipment and
				  facilities for routine laboratory testing necessary to ensure proper operation.
				  Provide methods for verifying adequate quality assurances and for routine
				  calibration of the equipment.
(1)
Testing equipment.
Laboratory equipment and facilities must be
				compatible with the raw water source, intended use of the treatment plant and
				the complexity of the treatment process involved. The laboratory must have
				enough equipment to perform operating control tests set forth in OAC 252:631
				and provide the following laboratory equipment:
(A) a pH meter, jar testing equipment, a
				nephelometric turbidimeter, and titration equipment for both hardness and
				alkalinity for surface water treatment plants utilizing flocculation and
				sedimentation, including those that soften the water with lime ,
(B) a pH meter and titration equipment for
				both hardness and alkalinity for ion exchange softening plant and lime
				softening plant treating only ground water,
(C) for iron and manganese removal plants,
				test equipment capable of accurately measuring:
(i) iron to a minimum of 0.1 mg/l,
				and/or
(ii) manganese to a minimum
				of 0.05 mg/l ,
(D) test
				equipment for determining both free and total chlorine residuals for PWS
				systems that chlorinate,
(E) test
				equipment for determining fluoride concentration for PWS systems that
				fluoridate or that treat or use blending for the reduction of naturally
				occurring fluoride, and
(F) test
				equipment capable of accurately measuring phosphates from 0.1 to 20 mg/l for
				PWS systems that feed polyphosphate or orthophosphate.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 5 - General Design › Section 252:626-5-7 - Monitoring equipment

Current through Vol. 41, No. 20, July 1, 2024
(a) Provide
				accurate and dependable flow measuring devices, equipped with totalizers, for
				measuring the raw and finished water flow. Make provisions for manual
				verification of measuring devices.
(b) For plants treating surface water,
				groundwater under the direct influence of surface water or using lime for
				softening, provide equipment to monitor and record turbidity, free chlorine
				residual, water temperature and pH at locations necessary to evaluate CT
				disinfection.
(c) for plants
				treating ground water using iron removal or ion exchange softeners, provide
				monitoring and recording equipment for free chlorine residual.
(d) For plants treating or blending water for
				the reduction in the concentration of nitrates, provide a test kit, used at
				least daily prior to the regeneration of the unit, to determine the finished
				water nitrate/nitrite levels.
Added at 18 Ok Reg 1612,
				  eff 6-1-01; Amended at 25 Ok Reg 2304, eff
				  7-11-08
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 5 - General Design › Section 252:626-5-8 - Sample taps

Current through Vol. 41, No. 20, July 1, 2024
Provide for sample taps in the approvable plans:
(1) for each raw water source,
(2) from each treatment unit, including on
				each filter, located to obtain representative samples of unit
				contents,
(3) from finished water
				storage, and
(4) that are the
				smooth-nosed type without interior or exterior threads, and do not have a
				screen, aerator, or other such equipment.
Added at 18 Ok Reg 1612,
				  eff 6-1-01; Amended at 25 Ok Reg 2304, eff
				  7-11-08
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 5 - General Design › Section 252:626-5-9 - Facility water supply

Current through Vol. 41, No. 20, July 1, 2024
Provide potable water to the facility in the approvable
				  plans.
Added at 18 Ok Reg 1612,
				  eff 6-1-01; Amended at 25 Ok Reg 2304, eff
				  7-11-08
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 5 - General Design › Section 252:626-5-10 - Sanitary facilities

Current through Vol. 41, No. 20, July 1, 2024
Provide a toilet and lavatory equipped with hot water in the
				  approved plans. Connect or construct the wastewater system to a system either
				  permitted or authorized pursuant to OAC 252:641 or OAC
				  252:656.
Added at 18 Ok Reg 1612,
				  eff 6-1-01; Amended at 25 Ok Reg 2304, eff
				  7-11-08
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 5 - General Design › Section 252:626-5-11 - Piping and conduits

Current through Vol. 41, No. 20, July 1, 2024
(a) Design all
				piping and channels to carry the maximum design capacity of the treatment
				facility. Clearly, show the design flow characteristics on the hydraulic
				profile sheet of the plans.
(b) Do
				not place treated water lines in a trench with sewers, plant wastewater lines,
				lines carrying raw or partially treated water, or other utility lines. Do not
				locate lines carrying partially treated water in a common trench or in close
				proximity to sewer or drain lines.
(c) No common wall is allowed between any
				channel, basin or reservoir containing raw or partially treated water and
				another containing filtered water.
Added at 18 Ok Reg 1612,
				  eff 6-1-01
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 5 - General Design › Section 252:626-5-12 - Piping color code

Current through Vol. 41, No. 20, July 1, 2024
(a) To facilitate
				identification of piping in plants and pumping stations use the color scheme
				provided in Appendix A or otherwise clearly identify all piping.
(b) In situations where 2 colors do not have
				sufficient contrast to easily differentiate between them, paint a 6-inch band,
				of contrasting color on one of the pipes at approximately 30-inch intervals,
				and name of the chemical on the pipe.
Added at 18 Ok Reg 1612,
				  eff 6-1-01
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 5 - General Design › Section 252:626-5-13 - Disinfection

Current through Vol. 41, No. 20, July 1, 2024
Disinfect all wells, pipes, tanks, and equipment that can
				  convey or store potable water in accordance with AWWA standard specifications
				  prior to being placed into service. Plans or specifications must outline the
				  procedure and include the disinfectant dosage, contact time, residual and
				  method of testing.
Added at 18 Ok Reg 1612,
				  eff 6-1-01
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 5 - General Design › Section 252:626-5-14 - Treatment unit and piping configuration

Current through Vol. 41, No. 20, July 1, 2024
(a) Where multiple treatment units are
				provided, the piping configuration must allow each treatment unit to be taken
				out of operation without disturbing the treatment process.
(b) Do not allow a bypass between raw or
				partially treated water lines and lines or basins containing filtered
				water.
Added at 18 Ok Reg 1612,
				  eff 6-1-01; Amended at 25 Ok Reg 2304, eff
				  7-11-08
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 5 - General Design › Section 252:626-5-15 - Cross connections and interconnections

Current through Vol. 41, No. 20, July 1, 2024
(a)
Cross connections.
Avoid
				cross connections in the system.
(1) Do not
				allow a physical connection between a line carrying a public drinking water
				supply and a line carrying water of unknown or questionable quality.
(2) Do not allow connections from any PWS
				system to any device or system that poses a health threat unless it is equipped
				with an air gap of at least 6 inches or two pipe diameters, whichever is
				larger, above the overflow or drain pipe. The installation of a reduced
				pressure zone backflow prevention device will be considered in lieu of an air
				gap. To allow maintenance on the backflow prevention device, the design shall
				include a diversion line with equal backflow prevention. Do not locate backflow
				prevention devices in a pit or vault where they can become submerged. A fire
				suppression system is not considered a hazardous water supply.
(3) Do not allow a cross-connection between a
				public water system and any private water system.
(4) Provide an air gap at all points where
				finished water is discharged to a drain.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 7 - Source Development › Section 252:626-7-1 - Source development

Current through Vol. 41, No. 20, July 1, 2024
(a)
General.
The Engineer must submit documentation to DEQ
				demonstrating that an adequate quantity of water will be available, and that
				water to be delivered to consumers will meet or exceed current drinking water
				standards. The applicant must obtain necessary water rights and withdrawal
				permits from the Oklahoma Water Resources Board.
(b)
Demand.
Investigate and
				document the requirements for each system and include past water use records
				revised to conform to anticipated growth and conditions.
(c)
Continued protection.
Provide continued protection of the source from potential sources of
				contamination through ownership, zoning, easements, leasing, or other
				means.
(d)
Source water
				assessment.
Perform a source water assessment of the factors, both
				natural and manmade, which will potentially affect quality, including but not
				limited to:
(1) determining possible future
				uses of impoundments or reservoirs,
(2) determining degree of control of
				watershed by owner, including necessity of ordinance to protect watershed from
				contamination,
(3) assessing degree
				of hazard to the supply by accidental spillage or other deposition of materials
				that may be toxic, harmful or detrimental to treatment processes,
(4) obtaining samples over a sufficient
				period to assess the microbiological, physical, chemical and radiological
				characteristics of the water,
(5)
				assessing the capability of the proposed treatment process to reduce
				contaminants to applicable drinking water standards, and
(6) status of compliance with state and local
				reservoir sanitation law.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 7 - Source Development › Section 252:626-7-2 - Surface water

Current through Vol. 41, No. 20, July 1, 2024
A surface water source includes all streams, natural lakes,
				  springs, and artificial reservoirs or impoundments within the drainage basin
				  above the point of intake.
(1)
Quantity.
(A) The quantity of
				water must be adequate to:
(i) meet the
				projected water demand, including anticipated growth of the service area as
				shown by calculations based on the extreme recorded drought, and
(ii) compensate for losses such as silting,
				evaporation, seepage, etc.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 7 - Source Development › Section 252:626-7-3 - Springs and dug wells

Current through Vol. 41, No. 20, July 1, 2024
(a)
General.
Springs and dug wells are considered under the influence
				of surface water and require treatment equivalent to surface water
				supplies.
(b)
Site
				protection.
Protect the spring or dug well at the point of intake from
				run-off water, sewage disposal and other sources of contamination. Provide the
				following:
(1) suitable grading and drainage
				to drain water from the site, and
(2) industrial-type wire fence with locked
				gate surrounding the site.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 7 - Source Development › Section 252:626-7-4 - Ground water

Current through Vol. 41, No. 20, July 1, 2024
(a) A ground water
				source includes all water obtained from drilled, bored or driven wells. A test
				well is required where sufficient information is not available to assure
				adequate quality and quantity of water.
(1)
Quantity.
(A) Provide a minimum
				of 2 wells for community water systems unless a standby source with adequate
				capacity is available.
(B) Where
				ground water is the sole supply source for a community water system, the total
				developed ground water capacity must equal or exceed:
(i) the design maximum day demand,
				and
(ii) the design average day
				demand, with the largest producing well out of service.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 7 - Source Development › Section 252:626-7-5 - Purchase water

Current through Vol. 41, No. 20, July 1, 2024
(a)
Quantity.
The quantity of water at the source must:
(1) be adequate to meet the projected water
				demand of the service area as shown by calculations based on the extreme
				recorded drought, and
(2) provide a
				reasonable surplus for anticipated growth.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 7 - Source Development › Section 252:626-7-6 - Raw water supply conduit

Current through Vol. 41, No. 20, July 1, 2024
(a) Pipe and
				accessories used for conduits must be new and conform to AWWA standard
				specifications.
(b) Design supply
				conduits for the following:
(1) carrying
				capacity must meet the ultimate design capacity of the treatment facilities or
				ultimate maximum daily demand of the community,
(2) maximum present and future pressures and
				water hammer,
(3) hydraulic grade,
				traffic loads, and laying conditions,
(4) expansion and contraction, anchorage at
				bends, and joints,
(5) blow-off
				valves and line valves to isolate line sections, and
(6) air inlet and release valves or towers to
				release air on filling or draining.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 9 - Treatment › Section 252:626-9-1 - General treatment requirements

Current through Vol. 41, No. 20, July 1, 2024
(a)
				Provide treatment (flocculation, sedimentation, and filtration or other
				approved process) for all surface water supplies, spring water supplies, and
				ground water supplies, which are of questionable chemical or sanitary quality.
				Required treatment will be based on bacteriological, chemical, physical, and
				microscopic examinations, taking into consideration variations in the quality
				of the water. Include equipment for taste and odor control where objectionable
				odor or taste problems have been experienced with the supply. Provide
				provisions for TOC removal.
(b)
				Design the plant capacity of the treatment facility so that it will not be
				overloaded, including water required to wash the filters, on the day of maximum
				demand at the end of the design period. Balance the plant capacity with
				finished water storage.
(c) Provide
				a minimum of 2 units for all treatment processes. Other than clarification,
				design each of the unit processes to meet the designed peak maximum flow per
				day, with the largest unit out of service.
(d) Construct each treatment process unit
				with a bypass so that units can be taken out of service without disrupting
				operation, and with drains or pumps sized to allow dewatering in a reasonable
				period of time.
(e) Package plants
				are approvable under the variance provision. A minimum of 2 units, each that
				meet the design criteria, are required.
(f) Non-conventional treatment processes
				require a pilot study or an EPA/NSF Environmental Technology Verification
				Report, which demonstrates removal of all contaminants.
(g) Disinfect all new and refurbished
				equipment according to AWWA standard specifications, before placing into
				service.
(h) Safety requirements
				for PWS systems must meet applicable OSHA standards.
Added at 18 Ok Reg 1612,
				  eff 6-1-01; Amended at 25 Ok Reg 2304, eff
				  7-11-08
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 9 - Treatment › Section 252:626-9-2 - Pretreatment

Current through Vol. 41, No. 20, July 1, 2024
(a) Provide pre-sedimentation basins for
				package and slow sand filter water treatment plants if the raw water turbidity
				is variable and exceeds 30 NTU at any time during the year. Surface water
				containing an excessive amount of suspended material or high organic content
				which cannot be readily removed by a package treatment plant or slow sand
				filtration requires pre-sedimentation and may require additional treatment
				prior to conventional treatment.
(b) Pre-sedimentation basins shall be
				designed in accordance with OAC
				252:626-9-8.
(c) Provide pre-sedimentation for
				microfiltration and ultrafiltration (MF/UF) for removal of total organic carbon
				or other soluble compounds, including, but not limited to iron and manganese.
				If the engineering report demonstrates that total organic carbon will not cause
				disinfection by-products violations then pre-sedimentation is not necessary.
				Other pretreatment methods, other than pre-sedimentation, shall be based on the
				results of a three (3) month pilot study. The study shall also determine the
				need for additional treatment if the water is high in turbidity or includes
				undesirable soluble constituents such as iron and manganese.
(d) Pretreatment for nanofiltration and
				reverse osmosis (NF/RO) depends on the quality of the raw water. If the feed
				water has a turbidity of less than 1 NTU or an SDI of less than 5, then
				cartridge filters with a pore size range of less than 20 [MICRO]m are required
				prior to the NF/RO treatment. If the feed water turbidity is 1 NTU or greater
				or the SDI is 5 or greater, then a more rigorous method of particulate removal,
				such as conventional treatment (including media filtration) or MF/UF membranes
				for particle removal is required. The use of MF/UF for pretreatment is more
				commonly known as an integrated membrane system (IMS). The IMS is one method
				allowed for the removal of particulate matter and microorganisms as well as
				some dissolved contaminants such as hardness, iron and manganese or
				disinfection by-product (DBP) precursors.
Added at 18 Ok Reg 1612,
				  eff 6-1-01; Amended at 25 Ok Reg 2304, eff 7-11-08; Amended at 29 Ok Reg 1035,
				  eff 7-1-12
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 9 - Treatment › Section 252:626-9-3 - Aeration

Current through Vol. 41, No. 20, July 1, 2024
(a)
Natural draft aeration.
Provide the following:
(1) perforations in
				the distribution pan 3/16 to 1/2 inches in diameter, spaced 1 to 3 inches on
				centers to maintain a 6 inch water depth,
(2) distribution of water uniformly over the
				top tray,
(3) discharge through a
				series of 3 or more trays with separation of trays not less than 12
				inches,
(4) loading at a rate of 1
				to 5 gal/min/ft2 of total tray area,
(5) trays with slotted, heavy wire (1/2 inch
				openings) mesh or perforated bottoms,
(6) construction of durable material
				resistant to aggressiveness of the water and dissolved gases,
(7) an enclosure with louvers sloped to the
				inside at an angle of approximately 45 degrees, and
(8) 24 mesh screen for protection from
				insects.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 9 - Treatment › Section 252:626-9-5 - Granular activated carbon (GAC)

Current through Vol. 41, No. 20, July 1, 2024
(a)
GAC filter-adsorber.
GAC filter-adsorbers utilized by replacing
				media in an existing filter, capping an existing filter, or by the installation
				of a new filter-adsorber are allowed. Some of the sand can be replaced in a
				single media filter or the coal in dual or mixed media filters with GAC.
(1) When adding GAC to existing filter media,
				provide a minimum of 15 inches of GAC.
(2) When using GAC as a single media, provide
				a total depth of 30 to 36 inches.
(3) Filter media must be 12 x 40 mesh
				(effective size of 1.68 to 0.42 mm) or 8 x 30 mesh (effective size of 2.38 to
				0.60 mm) with uniformity coefficient of 1.3 - 1.9.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 9 - Treatment › Section 252:626-9-6 - Taste and odor control

Current through Vol. 41, No. 20, July 1, 2024
(a) Make
				provisions for controlling taste and odor at all surface water treatment plants
				through the use of chlorination, chlorine dioxide, powdered activated carbon,
				granular activated carbon absorption units, potassium permanganate, aeration,
				hydrogen peroxide, ozonation or other approved method.
(b) If chemicals are to be used, add them at
				a point ahead of other treatment processes to assure adequate contact
				time.
(c) Make a complete study of
				the cause before selecting a treatment method(s) for taste and odor
				control.
Added at 18 Ok Reg 1612,
				  eff 6-1-01; Amended at 25 Ok Reg 2304, eff
				  7-11-08
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 9 - Treatment › Section 252:626-9-7 - Iron and manganese control

Current through Vol. 41, No. 20, July 1, 2024
(a)
General.
DEQ must approve treatment processes. When selecting
				treatment processes, local conditions must be evaluated using engineering
				investigations, including chemical analyses of representative samples of water
				to be treated. Include provisions for pH adjustment of the water to optimize
				the chemical reaction and to produce a non-corrosive finished water, containing
				not more than 0.3 ppm of iron and 0.05 ppm of manganese.
(1)
Removal by oxidation, detention,
				and filtration.
(A)
Oxidation.
Provide oxidation through the use of chlorination,
				chlorine dioxide, potassium permanganate, aeration, ozonation or other approved
				method.
(B)
Detention.
(i)
Reaction.
Provide a minimum
				detention time of 30 minutes following oxidation in order to insure that the
				oxidation reactions are as complete as possible. Design the detention basin as
				a holding tank with sufficient baffling to prevent short circuits. Provide
				drains for the basin.
(ii)
Sedimentation.
Provide sedimentation basins when treating water
				with high iron or manganese content, or where chemical coagulation is used to
				reduce the load on the filters.
(C)
Filtration.
Provide
				filtration.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 9 - Treatment › Section 252:626-9-8 - Clarification

Current through Vol. 41, No. 20, July 1, 2024
(a)
Standard design.
(1)
Rapid mix.
Rapid mix means
				the rapid dispersion of chemicals throughout the water to be treated. Provide
				for the following:
(A) equip mixing basins
				with mechanical mixing devices capable of adjustment to compensate for
				variations in raw water quality and flow. Commercial in-line static mixers
				capable of producing results equal to basins containing mechanical mixers at
				all anticipated flows will be acceptable,
(B) the maximum detention time of the rapid
				mix basin, at design flow is 30 seconds, and
(C) locate the rapid mix and flocculation
				basins as close together as possible.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 9 - Treatment › Section 252:626-9-9 - Filtration

Current through Vol. 41, No. 20, July 1, 2024
(a)
Filtration processes.
When
				filtration is required, utilize one of the following:
(1) Gravity sand filtration
(A) Slow sand filtration
(B) Rapid sand filtration
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 9 - Treatment › Section 252:626-9-10 - Softening

Current through Vol. 41, No. 20, July 1, 2024
Select the softening process based on mineral qualities of
				  raw water, desired finished water quality, requirements for disposal of
				  residuals or brine waste, cost of plant, cost of chemicals and plant
				  location.
(1)
Lime or lime-soda
				process.
(A)
Residuals
				removal.
Provide mechanical residuals removal equipment in the
				sedimentation basin.
(B)
Rapid mix.
In addition to the rapid mix requirements of OAC
				252:626-9-8(a)(1),
				the design of a softening plant must allow for the recycling of previously
				formed calcium carbonate crystals (lime residuals) to the rapid mix
				basin.
(C)
Filtration.
In addition to the requirements for filter design as set forth in OAC
				252:626-9-9, equip
				filters with a mechanical surface sweep to assist filter backwashing.
(D)
Stabilization.
Equipment for
				stabilization of water softened by the lime or lime-soda process is
				required.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 9 - Treatment › Section 252:626-9-11 - Disinfection

Current through Vol. 41, No. 20, July 1, 2024
(a)
General.
(1)
Surface and GWUDI.
All
				surface and GWUDI supplies require disinfection.
(2)
Groundwater.
Full-time
				disinfection of a groundwater supply is required whenever the record of
				bacteriological tests indicates the water is or was ever bacteriologically
				unsafe pursuant to
				252:626-7-4(a)(2).
(3)
Modification to disinfection
				process.
Do not make any changes to the disinfection process unless
				approved by the DEQ.
(4)
CT
				Standards.
Design the system to meet the CT standards in accordance with
				40
				CFR §
											141.72. CT shall provide 4.0 log
				inactivation for viruses.
(5)
				Accomplished log inactivation. Total log removal/inactivation required for
				Giardia, Cryptosporidium and viruses shall be accomplished through filtration
				and disinfection as described in the "Microbial and Disinfection Byproduct
				Rules Simultaneous Compliance Guidance Manual, " EPA 815-R-99-015.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 9 - Treatment › Section 252:626-9-13 - Stabilization and corrosion control

Current through Vol. 41, No. 20, July 1, 2024
(a)
Stabilization and corrosion control.
Make provisions for
				corrective treatment of waters that are corrosive to distribution systems and
				plumbing. The use of lined and coated mains in accordance with the AWWA
				standard specifications will minimize corrosion of the distribution system but
				will not protect plumbing systems on private property.
(b)
Equipment.
Equipment for
				feeding of an acid, alkali or polyphosphate compound must comply with OAC
				252:626-11.
(c)
Control
				procedures.
Include specifications for stability control equipment and
				laboratory equipment for determining the alkalinity and pH of the
				water.
(d)
Stabilization of
				alkaline (high pH) water.
Stabilization with carbon dioxide or acid must
				conform to one or more of the following:
(1)
Carbon dioxide addition.
(A)
				Design recarbonation basin to provide:
(i) a
				total detention time of twenty minutes, and
(ii) two compartments, each with a depth of 8
				feet, as follows:
(I) a mixing compartment
				having a detention time of at least 3 minutes,
(II) a reaction compartment.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 9 - Treatment › Section 252:626-9-14 - Anion exchange

Current through Vol. 41, No. 20, July 1, 2024
(a)
Pilot
				study.
A pilot study protocol shall be approved prior to conducting the
				pilot study. A pilot study is required prior to submission of an engineering
				report and must be conducted for a minimum duration of time sufficient to
				process water through at least one full bed volume and resin regeneration
				cycle, or 3 days, whichever is longer. The results of the pilot study shall be
				included in the engineering report.
(b)
Pretreatment.
Pretreatment
				shall be required if the total concentration of iron, manganese, and heavy
				metals exceeds 0.1 mg/L.
(c)
Process Design.
(1)
Redundancy.
Redundancy of control components, including, but not
				limited to, valves, air supply and computers, shall be provided. Anion exchange
				units shall be provided that meet the design capacity at a level below the
				nitrate/nitrite MCL with the largest unit out of service.
(2)
Automatic controls.
Automatic regeneration based on volume of water treated shall be provided
				unless manual regeneration can be justified and is approved by DEQ. A manual
				override shall be provided for all automatic controls.
(3)
Exchange capacity.
The
				design capacity of the anion exchange system shall not exceed the
				manufacturer's recommended design capacity of the resin and
				regeneration.
(4)
Flow
				rates.
The design shall not exceed 7 gallons/min/ft 
				2 of bed area for the treatment flow
				rate. The backwash flow rate should be 2-3 gallons/min/ft 
				2 of bed area with a fast rinse
				approximately equal to the service flow rate.
(5)
Flow meters.
Flow meters
				shall be provided on the source water influent piping and the plant finished
				water piping.
(6)
Blending.
If a portion of the water is bypassed around the
				treatment unit and blended with the treated water, the maximum blend ratio
				allowable must be determined based on the highest anticipated raw water nitrate
				level. If a bypass line is provided, a totalizing meter and a proportioning or
				regulating device or flow regulating valves must be provided on the bypass
				line.
(7)
Stabilization.
Stabilization for corrosion control shall be
				provided.
(8)
Appurtenances.
An adequate underdrain and supporting gravel
				system, brine distribution equipment, and cross connection control shall be
				provided.
(9)
Construction
				material.
Pipes and contact materials must be resistant to the
				aggressiveness of salt.
(10)
Cross connections.
Anion exchange system piping shall be designed
				to prevent any cross connection with any potable water supply, in accordance
				with OAC
				252:626-5-15.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 11 - Chemical Application › Section 252:626-11-1 - Chemical application

Current through Vol. 41, No. 20, July 1, 2024
Chemicals must be listed by NSF or UL as meeting ANSI/NSF
				  Standards 60 and 61. All containers shall be labeled with the following
				  information: chemical name, chemical purity, chemical concentration, supplier
				  name and supplier address. Do not apply any chemical to drinking water unless
				  specifically permitted by the DEQ.
(1)
Plans and specifications.
Include the following:
(A) description of equipment, including
				maximum and minimum feed ranges,
(B) location, piping layout and points of
				application,
(C) storage and
				handling facilities,
(D)
				specifications for chemicals to be used,
(E) operating and control procedures,
				including proposed applications rates, and
(F) descriptions of testing equipment and
				procedures.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 11 - Chemical Application › Section 252:626-11-2 - Operator safety

Current through Vol. 41, No. 20, July 1, 2024
Conveniently locate an eye-washing device and deluge shower
				  in the chemical storage and handling area. Install a water holding tank that
				  will allow the water feeding the shower and eye-washing device to come to room
				  temperature. Other methods of water tempering will be considered on a
				  case-by-case basis.
Added at 18 Ok Reg 1612,
				  eff 6-1-01
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 11 - Chemical Application › Section 252:626-11-3 - Facility design

Current through Vol. 41, No. 20, July 1, 2024
(a)
Number of
				feeders.
(1) Where chemical feed is
				necessary for the public health protection, such as chlorination, coagulation
				or other essential processes:
(A) provide a
				minimum of 2 feeders for each chemical applied,
(B) design the feed system to meet the
				maximum chemical demand with the largest unit out of service, and
(C) where a booster pump is required for
				feeder operation, provide duplicate pumps.
Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 626 - Public Water Supply Construction Standards › Subchapter 11 - Chemical Application › Section 252:626-11-4 - Additional requirements for specific chemicals

Current through Vol. 41, No. 20, July 1, 2024
(a)
Chlorine gas.
(1)
Housing.
Enclose chlorine
				gas feed and storage and separate them from other operating areas. The chlorine
				room must:
(A) have a shatter resistant,
				clear glass inspection window installed in an exterior door or interior wall to
				permit the chlorinator to be viewed without entering the room,
(B) be constructed so that all openings
				between the chlorine room and the remainder of the plant are sealed,
(C) be provided with doors equipped with
				panic hardware and opening only to the building exterior,
(D) be on ground floor with easy access for
				handling cylinders from a ramp or dock at floor level, and
(E) provide a gas-tight room to separate gas
				chlorination equipment, chlorine cylinders and ozone generation equipment from
				other parts of the building, if the building is used for other purposes. Do not
				connect floor drains from the chlorine room to floor drains from other rooms.
				Doors to this room shall only open to the outside of the building, with panic
				hardware, at ground level and allow easy access to all equipment. One-ton
				chlorine cylinders shall have separate storage and feed areas. All doors and
				emergency equipment shall be compatible with chlorine.