## Development of Chemical Precipitation Purchased Equipment Costs: **Sludge**

Purchased Equipment Costs are the sum of the following cost elements: (1) Pump Costs (2) Tank Costs (3) Chemical Feed System Costs (4) Mixer Costs (5) Clarifier Costs (6) Filter Press Costs (7) Sand Filter Costs

Each cost component includes the cost of freight and associated ancillary equipm ent such as piping, valves, and controllers.
This Excel workbook supports EPA's derivation of cost elements (1), (2), and (6) using information provided in response to the Steam Electric Survey

.
The following worksheet presents EPA's determination of the sludge factor, a ratio relating design sludge flow to FGD Wa stewater Treatment Flow, gpm (assuming wastewater treatment operations 24 hours per day and 365 days per year). EPA obtained design sludge flow from supplemental diagrams and engineering reports provided by plants in response to the Survey. After reviewing the available data and elim inating questionable data, EPA selected a sludge factor of 0.4. The sludge factor is used for the calculation of pump, tank, and filter press costs.Each cost component includes the cost of freight and associated ancillary equipm ent such as piping, valves, and

This Excel workbook supports EPA's derivation of cost elements (1), (2), and (6) using information provided in response to

The following worksheet presents EPA's determination of the sludge factor, a ratio relating design sludge flow to FGD Wa stewater Treatment Flow, gpm (assuming wastewater treatment operations 24 hours per day and 365 days per year). EPA obtained design sludge flow from supplemental diagrams and engineering reports provided by plants in response to the Survey. After reviewing the available data and elim inating questionable data, EPA selected a sludge factor of 0.4. The

### Plant ID **Plant Name cbi_Sludge_Flow_Rate** 



### 1381 EME Hom er City

Generation L.P. TRUE 

### 7785 Sem inole Generating Station FALSE 

### 9225 Fort Martin Power Station TRUE 

### 4237 Brandon Shores FALSE 

### 103 W. H. Sammis Plant FALSE 

### 14 Gibson Generating Station TRUE 

### 1402 Conesville FALSE 

### 6283 Pleasant Prairie Power Plant FALSE 

### 9805 PPL Montour TRUE 

### 4122 PPL Brunner Island TRUE



### EPA selected a median sludge factor of 0.4.

### Sludge flow rate (clarifier

**to sludge tank or filter press), gpm**  **cbi_WFGD_water_gen_tbl** 

### FGD Wastewater **Treatment Flow, gpm Sludge flow**  **rate/Purge flow rate**  [Redacted] TRUE 

### [Redacted] [Redacted]

50 FALSE 

### 421 0.12 [Redacted] FALSE 

### 178 [Redacted]

78 FALSE 

### 502 0.16 77.6 FALSE 

### 183 0.42 [Redacted] FALSE 

### 149.8458333 [Redacted]

62 FALSE 

### 156.7291667 0.40 17 FALSE 

### 40 0.44 [Redacted] FALSE 

### 116.6666667 [Redacted] [Redacted] FALSE 

### 116.6666667 [Redacted] **Min** [Redacted] **Max** [Redacted] **Average** 0.36 **Median** 0.40

### Notes

[Redacted]

### [Plant-specific information has been redacted from this tab to prevent disclosure of material for which a claim of confidential business

information has been made.]

### [Plant-specific information has been redacted from this tab to prevent disclosure of material for which a claim of confidential business

### [Plant-specific information has been redacted from this tab to prevent disclosure of material for which a claim of confidential business

information has been made.]

### [Plant-specific information has been redacted from this tab to prevent disclosure of material for which a claim of confidential business

### [Plant-specific information has been redacted from this tab to prevent disclosure of material for which a claim of confidential business

information has been made.]

### [Plant-specific information has been redacted from this tab to prevent disclosure of material for which a claim of confidential business

### [Plant-specific information has been redacted from this tab to prevent disclosure of material for which a claim of confidential business

information has been made.]

### [Plant-specific information has been redacted from this tab to prevent disclosure of material for which a claim of confidential business

### [Plant-specific information has been redacted from this tab to prevent disclosure of material for which a claim of confidential business

information has been made.]

### [Plant-specific information has been redacted from this tab to prevent disclosure of material for which a claim of confidential business