WSP08165

• File Number: 8407
• Description: Platte River Basin - River Basin General Publications
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 7/24/1992
• Author: USGS
• Title: The Barr Lake Plan
• Water Supply Pro - Doc Type: Report/Study

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improve the habitat in the Barr Lake area and could provide essential buffering
for the park against encroaching urbanization. The construction of a wetland
habitat at the point where the renovated water is discharged into Barr Lake
would further improve water quality and increase the diversity and quality of the
Barr Lake wildlife habitat.

4. Operation of the treatment basins for their alluvial storage would pennit greater
control over the direction of renovated wastewater, either into Barr Lake or
around Barr Lake to the Beebe Draw alluvium, depending on the most
beneficial use of the available storage.

S. The RSI process directly addresses nitrogen and phosphorous removal. Metro's
Nitrification Alternatives Study does not consider any alternatives which jointly
relate to nitrogen and phosphorous removal.

6. Placement of the RSI basins near Barr Lake would locate renovated wastewater
in the vicinity of the rtew Denver Airport where extensive use of municipal non-
potable water systems can be planned and constructed.

7. In-plant modifications to the Metro central facility would reduce the overall
treatment capacity available to Metro by nearly 20%. The proposed RSI is the
equivalent of a plant improvement for enhanced water quality. Actual plant
improvements meeting Title 22 California standards would cost over $100
million, whereas an RSI facility will cost a fraction of this amount. In addition,
the RSI would preserve the capacity of the Metro plant, which is the equivalent
of a 20% plant expansion. Lastly, Metro's physical limitations for future
expansion could be solved for decades by adding RSr basins as they are needed.

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