2008 - 2017 Capital Improvement Program

Project #8018, Blue Lake Plant Improvements  

Description:

This project consists of replacing the existing gaseous chemical effluent disinfection system with  liquid chemical disinfection; modifying the existing aeration tanks and solids handling facilities to  remove phosphorus; rehabilitation of facilities nearing the end of their useful life; improvements to  the solids processing facilities and odor control; the addition of anaerobic sludge digestion to  supplement the existing sludge dryer for reliability and capacity; and improvements to plant utility  systems, including standby power. The project also includes the staged expansion of the plant's  capacity.

Project Map

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Purpose and Justification:

In addition to meeting the regulatory requirements of the NPDES permit, the improvements provide the additional treatment capacity to meet long term service needs of the service area.

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Project Authorization:

Project Schedule

Authorizations

Start

End

Funding

Status

Prelim. Engr.

Jan-03
Sep-06

$800,000

Approved

Design

Feb-06
Oct-08
$11,200,000

Approved

Construction

Jun-07
Dec-13

$209,000,000

Approved

Prior Authorization:

$221,000,000

2008 Budget Adjustment:

$0

Total 2008 Authorization:

$221,000,000

Future Authorizations:

$0

Total Project Cost:

$221,000,000

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   Projected Cash Flow:

Authorized

Future

Total

Prior to 2008
$14,004,000
$0
$14,004,000
2008 Budget
17,000,000
0
  17,000,000
2009
36,000,000
0
36,000,000
2010
46,000,000
0
46,000,000
2011
48,000,000
0
48,000,000
2012
30,000,000
0
30,000,000
2013
3,900,000
0
3,900,000
2014
0
0
0
2015
0
0
0
2016
0
0
0
2017
0
0
0
Post-2017
0
0
0
Contingency
26,096,000
0
26,096,000
Totals
$221,000,000
$0
$221,000,000

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Impact on O&M Costs:

The plant's O&M costs will increase by approximately $120,000 annually due to the conversion to liquid chemical disinfection. Other plant O&M costs will increase as capacity is increased. Annual solids processing O&M costs will be reduced by over $1,000,000 with the addition of anaerobic digestion prior to heat drying, due primarily to energy cost savings, but total annual O&M costs will increase with increasing wastewater flow and solids production.

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