reglab/statecodes huggingface dataset:
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part IV - General Criteria for the Selection of a Wastewater Treatment and Disposal System Based on Site Conditions › Article 4 - Pump and Haul of Sewage › Section 12VAC5-610-599.2 - Temporary pumping and hauling

Current through Register Vol. 40, No. 24, July 15, 2024
Temporary pumping and hauling may be permitted under the
						following conditions:
1. It must be
					 demonstrated that the temporary pumping and hauling of sewage is not the usual
					 practice in order to permit premature and unplanned real estate or commercial
					 development in an area where sewerage facilities do not exist;
2. Construction of an approved sewerage
					 system or treatment works is actively in progress with personnel and machinery
					 at work in the particular area. Bonding, cash escrow or other assurances shall
					 be required to guarantee completion of the sewerage system and/or treatment
					 works;
3. The completion of the
					 sewerage system or treatment works is assured and a completion date within the
					 definition of temporary pumping and hauling has been set; and
4. Any and all delays from the anticipated
					 completion date shall be reported immediately by the holder of the pump and
					 haul permit to the district or local health department. Delays not resulting
					 from circumstances beyond the control of the holder of the pump and haul permit
					 shall be grounds for revocation of the pump and haul permit.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part IV - General Criteria for the Selection of a Wastewater Treatment and Disposal System Based on Site Conditions › Article 4 - Pump and Haul of Sewage › Section 12VAC5-610-599.3 - Permanent pump and haul

Current through Register Vol. 40, No. 24, July 15, 2024
Permanent pumping and hauling of sewage may be permitted
						under the following conditions:
1.
					 That the government entity enter into a contract with the department setting
					 forth that the government entity will provide pump and haul services, either
					 directly or through a private contractor holding a sewage handling permit, to
					 the home(s), commercial establishment(s) or occupied structure(s) for the
					 period the occupied structure is utilized or until connection can be made to an
					 approved sewerage facility;
2. Upon
					 completion of the contract between the department and the government entity,
					 the commissioner shall issue a single pump and haul permit to the government
					 entity. A separate construction permit shall be issued to the government entity
					 for each sewage storage facility. The sewage storage facility(s) shall be
					 designed and constructed in accordance with Article 7 (12VAC5-610-990 et seq.) of Part V
					 of this chapter; and
3. When the
					 government entity provides the sewage pump and haul services, it shall conform
					 to the conditions contained in
					 12VAC5-610-380 and Article 8
					 (12VAC5-610-1020 et seq.) of Part V
					 of this chapter.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part IV - General Criteria for the Selection of a Wastewater Treatment and Disposal System Based on Site Conditions › Article 5 - Installation of Residential Sewage Disposal Systems in Political SubdivisionsHaving Soil Drainage Management Contracts with the State Health Department › Section 12VAC5-610-600 - General

Current through Register Vol. 40, No. 24, July 15, 2024
It is the policy of the department to grant sewage
						disposal system permits for private residential systems utilizing subsurface
						soil absorption whenever such permits can be granted without endangering public
						health. Many soils are limited in their ability to accept sewage by high
						seasonal water tables. Some soils can accept sewage when an adequate local plan
						for soil drainage exists. When a political subdivision enters into a Soil
						Drainage Management Contract with the department and subsequently develops Soil
						Drainage Management Plan(s) in an area in which soils respond to artificial
						drainage and the plan is acceptable to the department, the department will
						consider the approval of subsurface soil absorption systems in soils that were
						previously unacceptable because of high seasonal water
						tables.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part IV - General Criteria for the Selection of a Wastewater Treatment and Disposal System Based on Site Conditions › Article 5 - Installation of Residential Sewage Disposal Systems in Political SubdivisionsHaving Soil Drainage Management Contracts with the State Health Department › Section 12VAC5-610-610 - Definitions

Current through Register Vol. 40, No. 24, July 15, 2024
The following words and terms, when used in this
						article, shall have the following meanings, unless the context clearly
						indicates otherwise.
"Soil Drainage Management Contract (SDMC)" means a
						contract between the department and the political subdivision for the
						development, operation, maintenance, and enforcement of all soil drainage
						management plans within the political subdivision.
"Soil Drainage Management Plan (SDMP)" means a plan
						approved by the commissioner, pursuant to
						12VAC5-610-630 below, meeting the
						criteria set forth in
						12VAC5-610-640
						below.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part IV - General Criteria for the Selection of a Wastewater Treatment and Disposal System Based on Site Conditions › Article 5 - Installation of Residential Sewage Disposal Systems in Political SubdivisionsHaving Soil Drainage Management Contracts with the State Health Department › Section 12VAC5-610-620 - Applicability

Current through Register Vol. 40, No. 24, July 15, 2024
This article shall be applicable only in those political
						subdivisions which enter into Soil Drainage Management Contracts with the
						department.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part IV - General Criteria for the Selection of a Wastewater Treatment and Disposal System Based on Site Conditions › Article 5 - Installation of Residential Sewage Disposal Systems in Political SubdivisionsHaving Soil Drainage Management Contracts with the State Health Department › Section 12VAC5-610-630 - Procedures for entry into or withdrawal from a Soil Drainage Management Contract (SDMC)

Current through Register Vol. 40, No. 24, July 15, 2024
A. Entry.
1. Any political subdivision in the
					 Commonwealth may at any time apply to the department through the district or
					 local health department for entry into an SDMC with the department. The
					 application shall contain the following minimum elements:
a. A proposed contract between the department
					 and the political subdivision; and
b. Drafts of all ordinances, required
					 easements, or other legal documents which the political subdivision proposes to
					 adopt as a portion of the SDMC including a local ordinance requiring the holder
					 of a sewage disposal construction permit issued in conjunction with the SDMC to
					 have the permit recorded in the land records of the circuit court having
					 jurisdiction.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part IV - General Criteria for the Selection of a Wastewater Treatment and Disposal System Based on Site Conditions › Article 5 - Installation of Residential Sewage Disposal Systems in Political SubdivisionsHaving Soil Drainage Management Contracts with the State Health Department › Section 12VAC5-610-640 - Minimum standards for Soil Drainage Management Plans

Current through Register Vol. 40, No. 24, July 15, 2024
A. Every SDMP offered in conjunction with a
					 SDMC shall meet the following minimum standards for surface and groundwater
					 management.
B. The SDMP shall
					 provide for:
1. Positive surface grading in
					 the area of a dwelling and subsurface soil absorption area at a minimum of
					 0.5%;
2. Drainage ditches for
					 diverting surface water and for lowering the seasonal groundwater table which
					 shall:
a. Completely surround the subsurface
					 soil absorption system;
b. Have a
					 minimum grade of 0.2%;
c. Be
					 located 70 feet, +-10 feet from the drainfield; and
d. Have the invert of the ditch placed in a
					 Group I, II or III soil at an elevation so that the normal water surface in the
					 ditch is at least six inches below the invert of the trench of the subsurface
					 soil absorption system;
3. A French drain on one side in lieu of an
					 open drainage ditch on one of the four sides;
4. Diversion ditches or swales shall be:
a. Required where adjacent property is equal
					 to or higher in elevation than the proposed site and the adjacent property may
					 be expected to discharge water onto the proposed site;
b. Designed to meet such site specific
					 individual requirements as the department determines to be necessary;
5. A receiving stormwater and
					 groundwater drainage system which is adequate in capacity so that waters from a
					 proposed site shall be conveyed to it in accordance with the political
					 subdivision's criteria;
6.
					 Diversion ditches, where required, or other ditches to transport stormwater
					 and/or groundwater from a site to a receiving body in accordance with the
					 political subdivision's criteria;
7. Ditches to remain open and not be piped
					 and covered unless approved by appropriate local government official, such
					 approval to be granted only with the concurrence of the department;
8. Only appurtenances to the subsurface soil
					 absorption system shall be constructed within the confines of the perimeter
					 ditches required in paragraph B 2 a, above, except where a French drain is
					 provided on one side; and
9. Lots
					 which shall be a minimum of three acres in size not including swamps or
					 marshland.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part IV - General Criteria for the Selection of a Wastewater Treatment and Disposal System Based on Site Conditions › Article 5 - Installation of Residential Sewage Disposal Systems in Political SubdivisionsHaving Soil Drainage Management Contracts with the State Health Department › Section 12VAC5-610-650 - Department procedures relating to subsurface soil absorption system applications in SDMC counties and cities

Current through Register Vol. 40, No. 24, July 15, 2024
A.
					 All applications for subsurface soil absorption systems will be evaluated based
					 on the criteria contained in this part. When the site is limited only by a high
					 seasonal water table and/or surface runoff, the department shall require that a
					 satisfactory SDMP be in place and functioning satisfactorily before issuance of
					 a construction permit. Typed on the construction permit will be the following
					 statement which shall be signed by the applicant:
I understand that this soil has severe limitations for
						the disposal of septic effluent. With the aforementioned drainage measures the
						health department expects reasonable serviceability, however, it may
						malfunction during extreme conditions.
I understand and acknowledge the above and agree to
						install and maintain the drainage measures.
Signed
Date
B. Soils to be considered shall demonstrate
					 their ability to be artificially drained and shall fall generally into Texture
					 Group I, II, or III.
C. The SDMP
					 and site specific drainage system or systems shall be certified, supervised,
					 maintained, and prepared by or under the direct supervision of a professional
					 engineer licensed in Virginia who is a full-time employee of the political
					 subdivision. In addition, the political subdivision shall have the manpower or
					 other capability to maintain the applicable conditions of the SDMP. This
					 certification shall become a part of the subsurface soil absorption system
					 permit.
D. Proper easements shall
					 be provided for drainage to assure access for proper maintenance.
E. Political subdivisions shall assure proper
					 installation and maintenance of the stormwater and ground water drainage system
					 or systems.
F. The department
					 retains the right to reject any SDMP if in the opinion of the department the
					 SDMP proposed will result in a nuisance or health hazard condition.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 1 - General Requirements › Section 12VAC5-610-660 - General

Current through Register Vol. 40, No. 24, July 15, 2024
The criteria contained in this section shall apply to
						all onsite sewage disposal systems. Deviations from these criteria may be
						considered by the district or local health department on a case-by-case
						basis.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 1 - General Requirements › Section 12VAC5-610-670 - Sewage flows

Current through Register Vol. 40, No. 24, July 15, 2024
Subsurface soil absorption systems shall be designed on
						the basis of the sewage flows tabulated in Table 5.1.
Table 5.1. Sewage Flows.
Discharge Facility
Design Unit
Flow (gpd)
BOD (#/day)
S.S. (#/day)
Flow Duration (Hour)
Dwelling1
per person total
75
0.2
0.2
24
Food preparation
15
Toilet facilities
20
Bathing facilities
20
Handwashing facilities
5
Laundering
15
Schools with shower and cafeteria
per person
16
0.04
0.04
8
Schools without showers and with or without
								cafeteria
per person
10
0.025
0.025
8
Boarding schools
per person
75
0.2
0.2
16
Motels at 65 gals/ person (rooms only)
per person
130
0.26
0.26
24
Trailer courts
per person
75
0.2
0.2
24
Restaurants
per seat
50
0.2
0.2
16
Interstate or through highway restaurants
per seat
100-180
0.7
0.7
16
Interstate rest areas
per person
5
0.01
0.01
24
Service stations
per vehicle served
10
0.01
0.01
16
Factories & office buildings
per person per 8-hr shift
15-35
0.03-0.07
0.03-0.07
operating period
Shopping centers
per 1,000 ft. of ultimate floor space
200-300
0.1
0.1
12
Hospitals
per bed
300
0.6
0.6
24
Nursing homes
per bed
200
0.3
0.3
24
Homes for the aged
per bed
100
0.2
0.2
24
Doctor's office in medical center
per 1,000 sq. ft.
500
0.1
0.1
12
Laundromats, 9 to 12# machines
per machine
500
0.3
0.03
16
Community colleges
per student and faculty
15
0.03
0.03
12
Swimming pools
per swimmer
10
0.001
0.001
12
Theaters, drive-in type
per car
5
0.01
0.01
4
Theaters, auditorium type
per seat
5
0.01
0.01
12
Picnic areas
per person
5
0.01
0.01
12
Camps, resort day and night with limited plumbing
per campsite
50
0.05
0.05
24
Luxury camps with flush toilets
per campsite
100
0.1
0.1
24
Dump station
per campsite
50
0.05
0.05
24
1 For all dwelling units the
								design shall be based on two persons per bedroom.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 1 - General Requirements › Section 12VAC5-610-680 - Water saving plumbing devices

Current through Register Vol. 40, No. 24, July 15, 2024
Water saving plumbing devices are encouraged to lengthen
						the life of the subsurface soil absorption system. However, only permanent
						water saving plumbing devices such as low flush toilets shall be considered in
						reducing the size of the absorption area. Devices such as inserts in showers
						are considered temporary.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 1 - General Requirements › Section 12VAC5-610-690 - Recycle and reuse systems

Current through Register Vol. 40, No. 24, July 15, 2024
Recycle and reuse systems are methods, processes and
						equipment in which sewage is restored to a condition suitable for reuse. When
						recycle and reuse systems are utilized in conjunction with toilet wastes only,
						an approved method of sewage disposal shall be provided to properly dispose of
						sewage generated via handwashing and other related sanitation activities. All
						recycle and reuse systems shall provide for an approved method of sewage
						disposal to handle excess sewage generated within the system. These systems are
						considered experimental unless they have been previously deemed to be
						satisfactory in accordance with the provisions of
						12VAC5-610-441 and/or as a minimum
						have been certified by the National Sanitation Foundation as meeting the
						current Standard 41 as determined by the bureau. Water recycle and reuse
						systems intended to produce water for other than toilet flush water are
						considered experimental and shall comply with the provisions of
						12VAC5-610-441. All proposals for
						recycle and reuse systems shall be submitted to the bureau through the district
						or local health department.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 1 - General Requirements › Section 12VAC5-610-700 - Site preparation and alteration

Current through Register Vol. 40, No. 24, July 15, 2024
A. Preservation of soil structure. The
					 preservation of the original structure of the soil in the area selected for
					 placement of the absorption trenches is essential to maintaining the
					 percolative capacity of the soil.
1.
					 Prohibition on construction. Subsurface soil absorption systems shall not be
					 constructed in Texture Group III and IV soils during periods of wet weather
					 when the soil is sufficiently wet at the depth of installation to exceed its
					 plastic limit. For the purpose of this chapter, the plastic limit of a soil
					 shall be considered to have been exceeded when the soil can be rolled between
					 the palms of the hands to produce threads 1/8 inch in diameter without breaking
					 apart and crumbling.
2. Soil
					 compaction. Special caution shall be taken in allowing wheeled and tracked
					 vehicles to traverse the area selected for placement of the absorption systems
					 before, during and after construction of the trenches, especially during wet
					 weather. Precaution is especially important where Texture Group III and IV
					 soils are involved. Alteration of soil structure by movement of vehicles may be
					 grounds for rejection of the site and/or system or revocation of the
					 permit.
3. Soil smearing.
					 Excavating equipment utilized to construct the absorption system shall be so
					 designed as not to compress or smear the sidewalks or bottom of the system.
					 Excessive smearing of the usable absorption trench sidewalls or bottom during
					 construction may result in irreversible damage to the soil infiltrative surface
					 and may be grounds for rejection of the site and/or system.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 1 - General Requirements › Section 12VAC5-610-710 - Reserve absorption area sites

Current through Register Vol. 40, No. 24, July 15, 2024
Separate reserve area or areas meeting the requirements
						of Part III, Article I of this chapter and equalling 50% of the required
						absorption area shall be provided where the estimated or measured percolation
						rate exceeds 45 minutes/inch.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 2 - Building Sewers › Section 12VAC5-610-720 - General

Current through Register Vol. 40, No. 24, July 15, 2024
Sewers referred to in this section are watertight,
						smooth bore, rigid conduits which convey sewage from a building drain to a
						pretreatment unit and are not to be confused with public sewers addressed in
						the Sewerage Regulations. (See 12VAC5-580-10 et seq.)
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 2 - Building Sewers › Section 12VAC5-610-730 - Minimum size

Current through Register Vol. 40, No. 24, July 15, 2024
Sewers shall have a minimum internal diameter (ID) of
						three inches. Larger sewers may be required depending on projected
						flows.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 2 - Building Sewers › Section 12VAC5-610-740 - Slope

Current through Register Vol. 40, No. 24, July 15, 2024
The minimum slope for three- and four-inch sewers is
						1-1/4 inches per 10 feet, and for a six-inch sewer is 3/4 inch per 10
						feet.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 2 - Building Sewers › Section 12VAC5-610-750 - Materials

Current through Register Vol. 40, No. 24, July 15, 2024
All sewers shall be of cast iron (CI) pipe not less than
						service weight, schedule 40 plastic pipe, extra strength vitrified clay or
						other acceptable materials to be evaluated on a case-by-case basis. Bituminous
						fiber pipe is prohibited. Sewers passing under driveways shall be heavy duty CI
						or schedule 40 plastic pipe, or other acceptable material to be evaluated on a
						case-by-case basis.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 2 - Building Sewers › Section 12VAC5-610-760 - Sewer appurtenances

Current through Register Vol. 40, No. 24, July 15, 2024
A.
					 Joints. Sewer joints shall be of the compression type except that plastic pipe
					 may be welded sleeve or chemically fused.
B. Adapters. Joining of pipes of different
					 sizes and/or material shall be accomplished by use of a manufactured adapter
					 specifically designed for that purpose.
C. Bends. The building sewer shall have a
					 straight alignment where possible. When a straight alignment is not possible
					 ells not exceeding 45 degrees shall be used.
D. Cleanouts. Cleanouts shall be brought to
					 the ground surface and shall be provided every 50 feet to 60 feet along the
					 length of the building sewer. Cleanouts shall be brought to the ground surface
					 for access.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 3 - Pretreatment Systems › Section 12VAC5-610-770 - Sewer construction

Current through Register Vol. 40, No. 24, July 15, 2024
A.
					 Location. Sewers passing within 50 feet of a nonpublic drinking water supply
					 well or other nonpublic drinking water supply source shall have special
					 construction and pipe materials to provide adequate protection. Special
					 construction constitutes water pipe meeting AWWA specifications, pressure
					 tested (10 feet of water) in place without leakage prior to backfilling.
					 However, under no circumstances shall a sewer come within 10 feet of a
					 nonpublic drinking water supply source.
B. Above grade installation. Sewers
					 constructed above grade shall be adequately supported and protected against
					 freezing. When plastic pipe is used for above grade installation the pipe must
					 be protected against ultraviolet radiation, i.e. shielded against
					 sunlight.
C. Bedding. All sewers
					 shall be bedded to supply uniform support along the length of the
					 sewer.
D. Backfilling and tamping.
					 Sewer trenches shall be backfilled with suitable material free of large stones
					 and clumps of earth and tamped to prevent movement of the sewer as soon as
					 possible after the installation of the sewer has been approved.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 3 - Pretreatment Systems › Section 12VAC5-610-780 - General

Current through Register Vol. 40, No. 24, July 15, 2024
As used in this article, "pretreatment" refers to
						treatment works designed to prepare sewage for disposal in a soil
						medium.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 3 - Pretreatment Systems › Section 12VAC5-610-790 - Types

Current through Register Vol. 40, No. 24, July 15, 2024
Three general types of pretreatment systems are
						described herein. They are as follows:
A. Biological;
B. Physical; and
C. Chemical.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 3 - Pretreatment Systems › Section 12VAC5-610-800 - Aerobic biological systems

Current through Register Vol. 40, No. 24, July 15, 2024
Aerobic biological treatment systems will be considered
						on a case-by-case basis at the request of the owner. These systems shall meet
						the applicable criteria contained in
						12VAC5-640-360 of the Alternative
						Discharging Sewage Treatment Regulations for Individual Single Family Dwellings
						or 12VAC5-580-770 of the Sewerage Regulations (12VAC5-580-10 et seq.) or
						criteria developed by a testing laboratory or agency approved by the division.
						Where an activated sludge process is used to produce a secondary effluent,
						provisions shall be made to protect the drainfield from bulking solids. Use of
						an aerobic pretreatment system shall not result in the reduction of the
						absorption area requirements contained in Article 5 (12VAC5-610 900 et seq.) of
						this chapter.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 3 - Pretreatment Systems › Section 12VAC5-610-810 - Anaerobic biological systems

Current through Register Vol. 40, No. 24, July 15, 2024
Septic tanks are the most commonly used pretreatment
						systems and under normal circumstances are the most inexpensive units that give
						acceptable results with a minimum of maintenance.
The preferred material for use in constructing septic
						tanks is concrete. Other materials may be considered on a case-by-case basis.
						All materials must be resistant to corrosion, both chemical and electrolytic,
						and must have sufficient structural strength to contain sewage and resist
						lateral compressive and bearing loads.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 3 - Pretreatment Systems › Section 12VAC5-610-815 - Septic tank design

Current through Register Vol. 40, No. 24, July 15, 2024
A. Tank
					 capacity. The minimum hydraulic detention time shall be 48 hours based on daily
					 design flow. In no case shall the septic tank capacity be less than 750
					 gallons. Table 5.2 contains the minimum required septic tank capacities for
					 dwelling units.
Table 5.2. Septic Tank Capacities for
								Dwelling Units.
No. of Bedrooms
Approximate Tank Volume in Gallons
1
750
2
750
3
900
4
1200
5
1500
B. Tank dimensions. Septic tanks shall be
					 rectangular in plan, cross-section and longitudinal view. The length to liquid
					 depth to width ratio should be approximately equal or greater than 2 to 1 to 1
					 (2:1:1) and less than or equal to 3 to 1 to 1 (3:1:1). In no case shall the
					 liquid depth be less than four feet or greater than eight feet. A minimum of
					 one foot free board shall be provided. Inlet and outlet structures shall be
					 placed on the longitudinal axis of the tank. Typical tank dimensions are found
					 in Table 5.3.
Table 5.3. Typical Septic Tank
								Dimensions in Feet.
Approximate Gallons
Length
Width
Liquid Depth
Freeboard
750
7
3.5
4
1
900
8
4
4
1
1200
9
4.5
4
1
1500
9.5
5
4.7
1
C. Inlet-outlet structure.
1. General. The inlet and outlet structures
					 shall function as a baffle. The invert of the inlet structure shall be greater
					 than one inch but less than two inches higher than the invert of the outlet
					 structure with the tank installed. The inlet structure shall extend six to
					 eight inches below and eight to 10 inches above the normal liquid level. The
					 outlet structure shall extend below the normal liquid surface to a distance of
					 35 to 40% of the liquid depth and eight to 10 inches above the normal liquid
					 level. The inlet and outlet structures shall have an open space not less than
					 four inches by four inches in cross-section or four inches in
					 diameter.
2. Materials. All
					 materials used for inlet and outlet structures shall have long term resistance
					 to chemical and electrolytic corrosion. When pipe tees are used as inlet and
					 outlet structures, the material shall be compatible with the material used in
					 the sewer.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 3 - Pretreatment Systems › Section 12VAC5-610-817 - Maintenance

Current through Register Vol. 40, No. 24, July 15, 2024
A. In order to
					 encourage proper maintenance and reduce the likelihood of solids being
					 discharged to an absorption field, all septic tanks constructed after July 1,
					 2000, shall be designed to allow for routine inspection without being uncovered
					 (i.e., have an inspection port as provided for in subsection B of this section)
					 or have an effluent filter as provided for in subsection C of this section, or
					 be designed for reduced maintenance as provided for in subsection D of this
					 section.
B. Inspection port. An
					 inspection port is a three-inch or larger port pipe or structure which allows
					 access to the septic tank for the purpose of measuring sludge and scum
					 accumulation. The inspection port shall terminate at or above grade and be
					 designed to allow an inspection of sludge buildup in the septic tank. The
					 inspection port shall be constructed of schedule 40 PVC pipe, or its
					 equivalent, and shall be fitted with a watertight threaded cap. The recommended
					 location of the inspection port shall be in or near the manhole cover on the
					 inlet side of the septic tank away from the inlet tee. Other locations may be
					 approved by the district health department on a case-by-case basis.
C. Effluent filters. An effluent filter is a
					 device which has one or more of the following purposes:
(i) to manage solids to provide greater
					 service life to a pump or other components of an onsite system; (ii) to manage
					 the total suspended solids (TSS) passed to the absorption field, potentially
					 enhancing absorption field life; or (iii) some other purpose recognized as
					 beneficial by the department.
1. All effluent
					 filters shall be designed to improve the quality of effluent leaving the tank
					 in a manner which is consistent with their purpose.
2. Septic tank outlet filters shall be
					 constructed from a material which resists the corrosive nature of the
					 environment within a septic tank.
3. A tamper proof child resistant at-grade
					 access port shall be provided to assure the filter can be readily maintained as
					 necessary.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 3 - Pretreatment Systems › Section 12VAC5-610-820 - Miscellaneous

Current through Register Vol. 40, No. 24, July 15, 2024
A. Multiple septic
					 tanks in series. The required volume for a septic tank may be satisfied by the
					 utilization of two septic tanks in series; however, the first septic tank in
					 series shall equal to 1/2 to 2/3 the required total volume.
B. Physical and/or chemical systems. Physical
					 or chemical systems, or both, utilized as pretreatment for subsurface disposal
					 of sewage shall meet the applicable criteria contained in 12VAC5-580-930
					 through 12VAC5-580-960 of the Sewerage Regulations.
C. Water stop. A water stop is a method for
					 sealing the annular space around a conduit or pipe, or both, for the purpose of
					 preventing infiltration or exfiltration, or both. Conduits or pipes passing
					 through the walls of a pretreatment unit shall be provided with a water
					 stop.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 3 - Pretreatment Systems › Section 12VAC5-610-830 to 12VAC5-610-840

Current through Register Vol. 40, No. 24, July 15, 2024
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 4 - Conveyance Systems › Section 12VAC5-610-850 - General

Current through Register Vol. 40, No. 24, July 15, 2024
For the purpose of this chapter an "effluent conveyance
						system" is defined as the piping, mechanical equipment and appurtenances
						utilized to transport effluent from a pretreatment system to a point where the
						flow is split for distribution to a subsurface soil absorption
						system.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 4 - Conveyance Systems › Section 12VAC5-610-860 - Conveyance methods

Current through Register Vol. 40, No. 24, July 15, 2024
Three basic methods utilized to convey effluent
						are:
1. Gravity;
2. Pumping; and
3. Dosing siphons.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 4 - Conveyance Systems › Section 12VAC5-610-870 - Gravity effluent mains

Current through Register Vol. 40, No. 24, July 15, 2024
A.
					 Size. Mains transporting effluent by gravity shall have a minimum internal
					 diameter of three inches.
B. Slope.
					 Gravity mains shall have a slope of not less than six inches per 100
					 feet.
C. Materials. Gravity mains
					 spanning disturbed soil shall meet the material specifications contained in
					 12VAC5-610-750. The mains shall
					 meet the specifications until placed two feet in undisturbed soil or until
					 termination in a structure. The remaining gravity mains shall have a minimum
					 crush strength of 1500 pounds per foot and may be constructed of cast iron,
					 plastic, vitrified clay or other material resistant to the corrosive action of
					 sewage. All gravity mains shall be watertight, smooth bore, rigid
					 conduits.
D. Appurtenances.
1. Joints. Gravity mains shall have joints of
					 the compression type with the exception of plastic mains which may be welded
					 sleeve or chemically fused.
2.
					 Adapters. Joining of mains of different size and/or material shall be
					 accomplished by use of a manufactured adapter specifically designed for that
					 purpose.
3. Valves. Valves shall be
					 constructed of materials resistant to the corrosive action of sewage. Valves
					 placed below ground level shall be provided with a valve box and a suitable
					 valve stem so that it may be operated from the ground surface.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 4 - Conveyance Systems › Section 12VAC5-610-880 - Pumping

Current through Register Vol. 40, No. 24, July 15, 2024
A. Force
					 mains in general.
1. Velocity. At pumping
					 capacity, a minimum self-scouring velocity of two feet per second shall be
					 maintained. A velocity of eight feet per second should not be
					 exceeded.
2. Air relief valve. Air
					 relief valves shall be placed at high points in the force main, as necessary,
					 to relieve air locking.
3. Bedding.
					 All force mains shall be bedded to supply uniform support along their
					 length.
4. Protection against
					 freezing. Force mains shall be placed deep enough to prevent
					 freezing.
5. Location. Force mains
					 shall not pass closer than 50 feet to any drinking water source unless pressure
					 tested in place at pump shut-off head. Under no circumstances shall a force
					 main come within 10 feet of a nonpublic drinking water source.
6. Materials of construction. All pipe used
					 for force mains shall be of the pressure type with pressure type
					 joints.
7. Anchors. Force mains
					 shall be sufficiently anchored within the pump station and throughout the line
					 length. The number of bends shall be as few as possible. Thrust blocks,
					 restrained joints and/or tie rods shall be provided where restraint is
					 needed.
8. Backfilling and tamping.
					 Force main trenches shall be backfilled and tamped as soon as possible after
					 the installation of the force main has been approved. Material for backfilling
					 shall be free of large stones and debris.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 4 - Conveyance Systems › Section 12VAC5-610-890 - Siphons

Current through Register Vol. 40, No. 24, July 15, 2024
A. Use.
					 Intermittent dosing siphons have two major uses:
1. Low pressure dosing of subsurface soil
					 absorption systems (see
					 12VAC5-610-940 ); or
2. To provide more uniform distribution of
					 effluent to large or multiple sectioned subsurface soil absorption systems
					 which split the flow 12 or more times or contain 1200 linear feet or more of
					 percolation piping (see
					 12VAC5-610-930 A and B).
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 5 - Subsurface Soil Absorption System › Section 12VAC5-610-900 - General

Current through Register Vol. 40, No. 24, July 15, 2024
Subsurface soil absorption systems are sewage disposal
						systems which utilize the soil to further treat and dispose of effluent from a
						treatment works in a manner that does not result in a point source discharge
						and does not create a nuisance, health hazard or ground or surface water
						pollution.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 5 - Subsurface Soil Absorption System › Section 12VAC5-610-910 - Scope

Current through Register Vol. 40, No. 24, July 15, 2024
For the purpose of this chapter, a "subsurface soil
						absorption system" shall refer to that part of a sewage disposal system
						beginning at the flow splitting device and extending through the absorption
						area or areas.
Statutory Authority
§§ 32.1-12 and 32.1-164 of the Code of
						  Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 5 - Subsurface Soil Absorption System › Section 12VAC5-610-920 - Distribution methods

Current through Register Vol. 40, No. 24, July 15, 2024
The term distribution methods refers to the piping, flow
						splitting devices, gravel, and other appurtenances beginning at the point of
						flow splitting and ending at the application of effluent to the soil absorption
						area. Two basic methods are considered:
A. Gravity; and
B. Pressure.
Statutory Authority: §§ 32.1-12, 32.1-164,
						  and 32.1-164.9 of the Code of Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 5 - Subsurface Soil Absorption System › Section 12VAC5-610-940 - Low pressure distribution

Current through Register Vol. 40, No. 24, July 15, 2024
Low pressure distribution is the conveyance of effluent
						through the pressure percolation lines at full flow conditions into the
						absorption area with the prime motive force being a pump or siphon. Low
						pressure systems are limited to a working pressure of from one to four feet of
						head at the distal end of the pressure percolation lines. For the purpose of
						this chapter low pressure distribution is considered to provide unsaturated
						soil conditions.
A. Dosing cycle.
					 Systems shall be designed so that the effluent volume applied to the absorption
					 area per dosing cycle is from seven to 10 times the volume of the distribution
					 piping, however, the volume per dosing cycle should not result in a liquid
					 depth in the absorption trench greater than two inches.
B. Manifold lines. Manifold lines are
					 watertight lines that convey effluent from the initial point of flow splitting
					 to the pressure percolation lines.
1. Size.
					 The manifold line shall be sized to provide a minimum velocity of two feet per
					 second and a maximum velocity of eight feet per second.
2. Materials. All pipe used for manifolds
					 shall be of the pressure type with pressure type joints.
3. Bedding. All manifolds shall be bedded to
					 supply uniform support along its length.
4. Backfilling and tamping. Manifold trenches
					 shall be backfilled and tamped as soon as possible after the installation of
					 the manifold has been approved. Material for backfilling shall be free of large
					 stones and debris.
5. Valves.
					 Valves for throttling and check valves to prevent backflow are required
					 wherever necessary. Each valve shall be supplied with a valve box terminating
					 at the surface.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 610 - SEWAGE HANDLING AND DISPOSAL REGULATIONS › Part V - Design and Construction Criteria › Article 5 - Subsurface Soil Absorption System › Section 12VAC5-610-950 - Absorption area design

Current through Register Vol. 40, No. 24, July 15, 2024
A. The
					 absorption area is the undisturbed soil medium utilized for absorption of the
					 effluent. The absorption area includes the infiltrative surface in the
					 absorption trench and the soil between and around the trenches when trenches
					 are used.
B. Suitability of soil
					 horizon. The absorption trench bottom shall be placed in the soil horizon or
					 horizons with an average estimated or measured percolation rate less than 120
					 minutes per inch. Soil horizons are to be identified in accordance with
					 12VAC5-610-480.
					 The soil horizon must meet the following minimum conditions:
1. It shall have an estimated or measured
					 percolation rate equal to or less than 120 minutes per inch;
2. The soil horizon or horizons shall be of
					 sufficient thickness so that at least 12 inches of absorption trench sidewall
					 is exposed to act as an infiltrative surface; and
3. If no single horizon meets the conditions
					 in subdivision 2 of this subsection, a combination of adjacent horizons may be
					 utilized to provide the required 12-inch sidewall infiltrative surface.
					 However, no horizon utilized shall have an estimated or measured percolation
					 rate greater than 120 minutes/inch.