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Virginia Administrative Code
Title 9. Environment
Agency 25. State Water Control Board
6/3/2020

Chapter 790. Sewage Collection and Treatment RegulationsRead Chapter

Section 10
Definitions
Section 20
Compliance with the Administrative Process Act
Section 30
Extent
Section 40
Variances
Section 50
CTCs and CTOs
Section 60
CTC and CTO waivers
Section 70
Reliability classification
Section 80
CTC procedures
Section 90
CTC application
Section 100
Preliminary engineering conference
Section 110
Preliminary engineering proposal
Section 120
Construction drawings (plans)
Section 130
Specifications
Section 140
Operation and maintenance manuals
Section 150
Sludge management plans
Section 160
Formal requirements for the submission of engineering data
Section 170
Processing of plans, specifications and other engineering documents
Section 180
CTC
Section 190
CTO
Section 200
CTO modifications or revocation actions
Section 210
Nonconventional methods, processes or equipment
Section 220
Local review for sewerage systems
Section 230
Compliance with Part II (9VAC25-790-260 et seq.--Operational Regulations) of this chapter
Section 240
Compliance with Part III (9VAC25-790-310 et seq.--Manual of Practice) of this chapter
Section 250
Sewage Collection and Treatment Advisory Committee
Section 260
Influent and effluent monitoring
Section 270
Operational testing and control
Section 280
Land based monitoring system
Section 290
Manuals
Section 300
Reliability
Section 310
Design factors
Section 320
Design details
Section 330
Construction details
Section 340
Vacuum sewage system
Section 350
Manholes
Section 360
Water quality and public health and welfare protection
Section 370
System access
Section 380
Sewage pumping
Section 390
Reliability
Section 400
Pumping equipment
Section 410
Portable equipment and diversions
Section 420
Alarm systems
Section 430
Alternatives
Section 440
Force mains
Section 450
Treatment works design
Section 460
Standards
Section 470
Treatment works details
Section 480
Treatment works outfalls
Section 490
Reliability protection
Section 500
Screening
Section 510
Grit removal facilities
Section 520
Pre-aeration
Section 530
Clarifiers
Section 540
Sludge stabilization
Section 550
Anaerobic digestion
Section 560
Aerobic sludge digestion
Section 570
Composting
Section 580
Heat treatment
Section 590
Chemical treatment
Section 600
Sludge thickening
Section 610
Sludge dewatering
Section 620
Sludge drying beds
Section 630
Filtration
Section 640
Centrifuges
Section 650
Sludge pumping
Section 660
Sludge management
Section 670
Attached growth processes
Section 680
Rotating biological contactors
Section 690
Suspended growth (activated sludge) process
Section 700
Oxidation ditches
Section 710
Sequencing batch reactors (SBR)
Section 720
Sewage stabilization ponds and aerated lagoons
Section 730
Aerated lagoons
Section 740
Disinfection
Section 750
Chlorination
Section 760
Bromochlorination
Section 770
Ultraviolet light irradiation (UV)
Section 780
Ozonation
Section 790
Other disinfection methods
Section 800
Dechlorination
Section 810
Polishing ponds
Section 820
Postaeration
Section 830
Flow equalization
Section 840
Chemical treatment
Section 850
Chemical clarification
Section 860
Filtration
Section 870
Conventional alternatives
Section 880
Land treatment
Section 890
Constructed wetlands
Section 900
Nutrient reduction
Section 910
Biological nitrification
Section 920
Ammonia stripping
Section 930
Ion exchange
Section 940
Preliminary Engineering Report
Section 950
Contents for an operation and maintenance manual
Section 960
Influent and effluent sampling
Section 970
Operational testing and control
Section 980
Factors for oxygen transfer
Section 990
Portable equipment for sewage pump stations
Section 1000
General jurisdictional responsibilities for sewerage systems connections
FORMS
FORMS (9VAC25-790)
DIBR
DOCUMENTS INCORPORATED BY REFERENCE (9VAC25-790)

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