DWQ-2024-005119

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Tratment Plant Date Scored Scorer
Grantsville 6/27/2024
ITEM Value Have Points
SIZE (2 PT. MINIMUM - 20 PT. MAXIMUM)
Max. population equivalent (PE) or part served, peak day, 1 pt./10,000 or part Population 5000
Flow 1.5
Variation in raw waste; Recurring deviations or excessive variations
do not exceed those normally or typically expected 0 X 0
of 100 - 200% in strength and/or flow 2
of more than 200% in strength and/or flow 4
Special Wastes
Raw wastes subject to toxic waste discharges 6
Acceptance of septage or truck-hauled waste 2 X 2
Preliminary Treatment
Plant pumping of main flow 3
Screening, comminution 3 X
Grit removal 3 X
Equalization 1
Primary Treatment
Clarifiers 5
Imhoff tanks or similar 5
Secondary Treatment
Fixed-film reactor 10
Activated sludge 15
Stabilization ponds without aeration 5
Stabilization ponds with aeration 8 X
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 10
Biological or chemical/biological advanced waste treatment 12
Nitrification by designed extended aeration only 2
Ion exchange for advanced waste treatment 10
Reverse Osmosis, electrodialysis and other membrane filtration techniques 15
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
8
3
Enter Whole Integer Value
Indicate all that apply
Indicate all that apply
Indicate all that apply
Indicate all that apply
3
8
3
Influent Strength Variability (0 - 6 pt. max.)
0
6
# of Chmical Additions
Indicate all that apply
Daniel Griffin
Design flow average day or peak month average in MGD, whichever is larger, 1
pt./MGD or part there of
0
0
1
2
Indicate all that apply
2 2
Level of Waste Variation
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Tratment Plant Date Scored Scorer
Grantsville 6/27/2024 Daniel Griffin
Solids Handling
Solids conditioning 2
Solids thickening (If present chose between 2 and 5 based on technology) 2 - 5
Mechanical dewatering 8
Anaerobic digestion of solids 10
Utilization of digester gas for heating or cogeneration 5
Aerobic digestion of solids 6
Evaporative sludge drying 2
Solids reduction (including incineration, wet oxidation) 12
On-site landfill for solids 2
Solids composting 10
Land application of biosolids by contractor 2
Land application of biosolids under direction of facility operator in DRC 10
Disinfection (10 pt. max.)
Chlorination or ultraviolet irradiation 5 X
Ozonation 10
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 X
to provide data with limited process operation 2
to provide data with moderate process operation 4 X
to provide data with extensive/total process operation 6
Bacteriological/biological (5 pt. max.)
Lab work done outside plant 0 X 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 plant 0 X 0
Push-button, visual methods for simple tests (ie. pH, settleable solids) 3 X 3
Additional procedures (ie. DO, COD, BOD, gas analysis, titrations, solids volatile
content)5 X 5
More advanced determinations (ie. specific constituents; nutrients, total oils,
phenols)7
Highly sophisticated instrumentation (ie. atomic absorption, gas chromatography)10
Grade I 0 - 30 points Score
Grade II 31 - 55 points 33
Grade III 56 - 75 points Grade II
Grade IV 76 and greater
4
5
Indicate Onsite Analysis Level
Indicate Onsite Analysis Level
5
0
Laboratory Control (15 pt. max)
Indicate SCADA Level
0
4
0
Indicate all that apply
Indicate all that apply
5
5
0
Indicate all that apply
Treatment Plant is