2011 - 2016 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 secondary treatment 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 to recover energy for dryer use; 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 increased process reliability and 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-12
$11,200,000

Approved

Construction

Jun-07
Dec-21

$175,000,000

Approved

Prior Authorization:

$187,000,000

2011 Budget Adjustment:

0

Total 2011 Authorization:

$187,000,000

Future Authorizations:

$0

Total Project Cost:

$187,000,000

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   Projected Cash Flow:

Authorized

Future

Total

Prior to 2011
$81,394,000
$0
$81,394,000
2011 Budget
25,000,000
0
  25,000,000
2012
6,000,000
0
6,000,000
2013
0
0
0
2014
0
0
0
2015
0
0
0
2016
10,000,000
0
10,000,000
2017 - 2021
50,000,000
0
50,000,000
2022 - 2026
0
0
0
Contingency
14,606,000
0
14,606,000
Totals
$187,000,000
$0
$187,000,000

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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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