Utah Admin. Code 317-10-6
Treatment plants and collection systems shall be classified in accordance with Table 1.
TABLE 1 FACILITY CLASSIFICATION SYSTEM | |||||
FACILITY CATEGORY | CLASS | ||||
I | II | III | IV | ||
Collection (1) | Pop. Served | 3,500 and less | 3,501 to 15,000 | 15,001 to 50,000 | 50,001 and greater |
Treatment Plant (2) | Range of Fac. Points | 30 and less | 31 to 55 | 56 to 75 | 76 and greater |
Small Lagoon Systems(3) | Pop. Equiv. Served | 3,500 and less | |||
(1) Simple "in-line" treatment, such as booster pumping, preventive chlorination, or odor control, is considered an integral part of a collection system. | |||||
(2) Treatment plants shall be assigned "facility points" in accordance with Table 2 "Wastewater Treatment Plant Classification System". | |||||
(3) A combined certificate shall be issued for treatment works and collection system operation. | |||||
TABLE 2 WASTEWATER TREATMENT PLANT CLASSIFICATION SYSTEM | |
Item | Points |
SIZE (2 PT Minimum - 20 PT Maximum) | |
Max. Population equivalent (PE) served, peak day(1) | 1 - 10 |
Design flow average day or peak month average, whichever is larger(2) | 1 - 10 |
VARIATION IN RAW WASTE (3) | |
Variations do not exceed those normally or typically expected | 0 |
Recurring deviations or excessive variations of 100 - 200% in strength and/or flow | 2 |
Recurring deviations or excessive variations of more than 200% in strength and/or flow | 4 |
Raw wastes subject to toxic waste discharges | 6 |
Acceptance of septage or truck-hauled waste | 2 |
PRELIMINARY TREATMENT | |
Plant pumping of main flow | 3 |
Screening, comminution | 3 |
Grit removal | 3 |
Equalization | 1 |
PRIMARY TREATMENT | |
Clarifiers | 5 |
Imhoff tanks or similar | 5 |
SECONDARY TREATMENT | |
Fixed film reactor | 1 0 |
Activated sludge | 1 5 |
Stabilization ponds w/o aeration | 5 |
Stabilization ponds w/aeration | 8 |
TERTIARY TREATMENT | |
Polishing ponds for advanced waste treatment | 2 |
Chemical/physical advanced waste treatment w/o secondary | 15 |
Chemical/physical advanced waste treatment following secondary | 1 0 |
Biological or chemical/biological advanced waste treatment | 12 |
Nitrification by designed extended aeration only | 2 |
Ion exchange for advanced waste treatment | 1 0 |
Reverse osmosis, electrodialysis and other membrane filtration techniques | 1 5 |
Advanced waste treatment chemical recovery, carbon regeneration | 4 |
Media Filtration | 5 |
ADDITIONAL TREATMENT PROCESSES | |
Chemical additions (2 pts./each for max. of 6 pts.) | 2 - 6 |
Dissolved air flotation (for other than sludge | |
thickening) | 8 |
Intermittent sand filter | 2 |
Recirculating intermittent sand filter | 3 |
Microscreens | 5 |
Generation of oxygen | 5 |
SOLIDS HANDLING | |
Solids conditioning | 2 |
Solids thickening (based on technology) | 2 - 5 |
Mechanical dewatering | 8 |
Anaerobic digestion of solids | 1 0 |
Utilization of digester gas for heating or cogeneration | 5 |
Aerobic digestion of solids | 6 |
Evaporative sludge drying | 2 |
Solids reduction (including incineration, wet oxidation) | 1 2 |
On-site landfill for solids | 2 |
Solids composting | 1 0 |
Land application of biosolids by contractor | 2 |
Land application of biosolids under direction of facility operator in DRC | 1 0 |
DISINFECTION (10 pt. max.) | |
Chlorination or ultraviolet irradiation | 5 |
Ozonation | 1 0 |
EFFLUENT DISCHARGE (10 pt. max.) | |
Mechanical Post aeration | 2 |
Direct recycle and reuse | 6 |
Land treatment and disposal (surface or subsurface) | 4 |
INSTRUMENTATION (6 pt. max.) | |
Use of SCADA or similar instrumentation systems to provide data with no process operation | 0 |
Use of SCADA or similar instrumentation systems to provide data with limited process operation | 2 |
Use of SCADA or similar instrumentation systems to provide data with moderate process operation | 4 |
Use of SCADA or similar instrumentation systems to provide data with extensive/total process operation | 6 |
LABORATORY CONTROL (15 pt. max)(4) | |
Bacteriological/biological (5 pt. max): | |
Lab work done outside the plant | 0 |
Membrane filter procedures | 3 |
Use of fermentation tubes or any dilution method (or E. coli determination) | 5 |
Chemical/physical (10 pt. max): | |
Lab work done outside the plant | 0 |
Push-button, visual methods for simple tests (i.e. pH, settleable solids) | 3 |
Additional procedures (ie, DO, COD, BOD, gas analysis, titrations, solids volatile content) | 5 |
More advanced determinations (ie, specific constituents; nutrients, total oils, phenols) | 7 |
Highly sophisticated instrumentation (i.e., atomic absorption, gas chromatography) | 10 |
(1) 1 point per 10,000 P.E. or part; maximum of 10 points | |
(2) 1 point per MGD or part | |
(3) Key concept is frequency and/or intensity of deviation or excessive variation from normal or typical fluctuations; such deviation may be in terms of strength, toxicity, shock loads, inflow and infiltration, with point values ranging from 0 - 6. | |
(4) Key concept is to credit laboratory analyses done on-site by plant personnel under the direction of the operator in direct responsible charge with point values ranging from 0 - 15. | |
Utah Admin. Code R317-10-6