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Fort Walton Beach Council agenda — 04-29-03 workshop agenda — reading text
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925, 000)
Total Present Value $ 5, 790, 312
I
Notes:
1) Futurevalue ( FV) based on capital inflation rate of 2. 72%
I ( 2) Futurevalue ( FV)based on operating Inflation rate of
3) Present value ( PV)factor based on discount rate of
4) Cost to replace components at the end of their service lives.
2.50%
5.00%
5) Residual value based on components with remaining service life after 30 year analysis.
6) Projected cost to recondition aerator motors
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t TABLE A- 10
CITY OF FORT WALTON BEACH WWTP
PROCESS TRAIN UTILIZING RBCs
ESTIMATED REHABILITATION COSTS
J.
Contingency, Engineering, Total
It Initial Capital Expense Item Unit Cost Permitting @ 25% Capital Cost ASL
Pretreatment
Pretreatment Structure Rehabilitation 50,000 $ 12, 500 $ 62, 500 30
20,000 5, 000 25,000 15
Mechanically Operated Bar Screen
15, 000 3,750 18, 750 30
High Pressure Flushing Line
Slide Gates from Splitter Box 20, 000 5.000 25, 000 30
I 131, 250
Primary Clarifiers
Removal and Disposal of Existing Drive Units 10, 000 $ 2, 500 $ 12, 500
250, 000 62, 500 312,500 20
Replace Existing Drive Units
325,000
I Secondary Treatment
620, 000 $ 155,000 $ 775,000 20
High Density RBC Units with Shafts ( stage one)
Standard Density RBC Units with Shafts ( stage two) 880, 000 220, 000 1, 100,000 20
I Gear Boxes, Motors, Controls
Repair Basin Structure
150,000
200, 000
37,500
50, 000
187, 500
250, 000
15
30
Influent & Effluent Weir Gates 40,000 10,000 50, 000 30
Aeration System ( piping and diffusers) 20,000 5,000 25,000 20
I Centrifugal Blowers ( 3 - 75 Hp)
DO Monitoring System
150,000
20, 000
37,500
5, 000
187, 500
25, 000
15
15
Generator ( supplem ental capacity) 40,000 10,000 50, 000 15
2,650,000
Effluent Filtration
Additional Denitrification Filter Capacity 650,000 162, 500 $ 812, 500 20
E Disinfection
40, 000 $ 10,000 $ 50,000 15
Liquid Chlorine Storage/ M etering
i:: Chlorine Building 20,000 5,000 25, 000 30
j",:
CCC Basin Rehabilitation 100, 000 25,000 125,000 30
200, 000
Total 4,118, 750
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I TABLE A- 10 ( c;ontinued)
CITY OF FORT WALTON BEACH WWTP
PROCESS TRAIN UTILIZING RBCs
ESTIMATED REHABILITATION COSTS
1)
Capital Expenses Expected In 15 Vears (
III'
20,000 5.000 25,000
Mechanically Operated Bar Screen
i. Gear Boxes, Motors, Controls 150, 000 37, 500 187, 500
150, 000 37,500 187, 500
Centrifugal Blowers (3 - 75 Hp)
DO Monitoring System 20, 000 5,000 25, 000
Ii Liquid Chlorine Storage/ M etering
Generator ( supplem ental capacity)
40, 000
40,000
10, 000
10, 000
50, 000
50,000
525,000
I Capital Expenses Expected In 20 Vears (
1)
250, 000 62,500 312, 500
Replace Primary Clarifier Drive Units
620, 000 155,000 775, 000
High Density RBC Units with Shafts ( stage one)
I Standard Density RBC Units with Shafts ( stage two)
Aeration System ( piping and diffusers)
880. 000
20, 000
220, 000
5,000