Regulated System Record
The current classification scoring system for the selected facility is shown below.
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|
HAP McKinley Chalets Resort Wastewater Treatment System |
|
Denali National Park |
|
HAP McKinley Chalets Resort |
|
Wastewater Treatment |
|
Class 2 |
Wastewater treatment systems are classified according to a point rating system. Point values are
recognized for each of the various components found in a treatment plant. Points are totaled
once all components have been recognized. The total number of points determines the classification of
the wastewater treatment system.
Click here to view the entire list of components for which points can be counted for wastewater treatment.
The specific components that have been recognized toward the classification of this wastewater treatment
system are as follows:
| Size (Peak day design capacity, gallons per day) - 100,001 - 500,000 | 9 |
| Pretreatment - Flow equalization basin | 1 |
| Pretreatment - Mechanically cleaned screens | 2 |
| Pretreatment - Fine screens, including microscreens | 3 |
| Pretreatment - Grit removal | 2 |
| Secondary Treatment - Activated sludge: Diffused or dispersed aeration | 10 |
| Advanced Waste Treatment - Membrane filtration | 8 |
| Sludge Thickening and Dewatering - Centrifuge | 6 |
| Sludge Stabilization and Conditioning - Aerobic digestion | 5 |
| Solids Disposal - Off-site disposal | 1 |
| Disinfection - Ultraviolet light | 3 |
|
1-30 |
Class 1 |
|
31-55 |
Class 2 |
|
56-75 |
Class 3 |
|
>75 |
Class 4 |
Operators:
For more information, please review the Water and Wastewater Operator Certification
and Training Regulation (18 AAC 74).
