Cs 8.34*Vu* (BcB + ScS + PcP + AcA + ClcCL + CODcCOD)
|
Where:
| ||||
Cs
|
=
|
amount of surcharge (always greater than zero)
| ||
Vu
|
=
|
wastewater volume for the billing period in millions of gallons
| ||
Bc
|
=
|
unit operating cost attributable to BOD5
| ||
B
|
=
|
BOD5 discharge concentration minus 250
mg/L
| ||
Sc
|
=
|
unit operating cost attributable to total suspended solids
| ||
S
|
=
|
total suspended solids discharge concentration minus 270 mg/l
| ||
Pc
|
=
|
unit operating cost attributed to phosphorous
| ||
P
|
=
|
Phosphorous discharge concentration minus 10 mg/L
| ||
Ac
|
=
|
unit operating costs attributable to Ammonia
| ||
A
|
=
|
Ammonia discharge concentration minus 25 mg/L
| ||
Clc
|
=
|
unit cost attributable to Chlorides
| ||
Cl
|
=
|
Chlorides discharge concentration minus 180 mg/L
| ||
CODc
|
=
|
unit operating cost attributable to COD
| ||
COD
|
=
|
COD discharge concentration minus 500 mg/L
|
Cost for Wastewater Treatment Plant Upgrade
Increased Capacity for New Users
Value of Increased Capacity
Anticipated New Hookups Over 20 Years
Value of Increased Capacity per Anticipated Hookup
|
$2,101,132.05
58.9%
$1,237,566.78
220
$5,625.30
| |
All values are based on 2004 dollars
|
Pollutant
|
Concentration
(milligrams per liter)
| |
---|---|---|
Ammonia
|
480
| |
Arsenic
|
0.10
| |
Cadmium
|
0.50
| |
Chromium (Hexavalent)
|
0.50
| |
Chromium (Total)
|
1
| |
Chloride
|
180
| |
Copper
|
1
| |
Cyanide
|
0.10
| |
Lead
|
0.10
| |
Manganese
|
10
| |
Mercury
|
0.10
| |
Nickel
|
1
| |
Phosphorous
|
10
| |
pH (range)
|
6.0-9.0
| |
Silver
|
5
| |
Sulfate
|
1,500
| |
Total Suspended Solids
|
270
| |
Zinc
|
1
| |
Temperature
|
Not over 150° F.
|