## Development of Chemical Precipitation Operation and Maintenance Costs: **An nual Plant WWTS Flow**  **s for Plants Operating Chemical Precipitation**

This Excel workbook consists of the following worksheets:

kpk_016_W WT _System_flows_at_C

Not FGD W WT Systems

Not CP Systems
New Systems

Notes Additional information regarding the query performed to extract pertinant information from the Steam Electric Survey Database. This Excel workbook document EPA's derivation of annual wastewater treatment flows in gallons per year for plants operating chemical precipitation treatment of flue gas desulfurization wastewater. These annual plant flows are used to calculate certain cost factors, for example cost factors for maintenance labor and maintenance materials (see DCN SE01825.A46 'CBI_Chem Precip Maintenance Labor and Materials.xlsx').

Documents the development of annual plant chemical precipitation wastewater treatment flows, using certain plant responses to the Steam Electric Survey . To select plant responses used to develop the plant flows, EPA started by extracting capital costs for all wastewater treatment systems for plants operating chemical precipitation systems (as ma rked in B7-4 or identified via further evaluation of plant responses). Next, EPA excluded from the dataset records for those wastewater treatment systems that do not treat FGD wastewater, and systems subsequently determined by

EPA to not use chemical precipitation. Also documents development of the capacity factor used in the Steam Electric cost model. Documents Steam Electric Survey data excluded from use in this analysis because the data do not represent treatment of flue gas desulfurization wastewater. Documents Steam Electric Survey data excluded from use in this analysis because the data do not represent treatment of flue gas desulfurization wastewater using chemical precipitation. Documents identification of new FGD wastewater treatment sy stems excluded in developing the capacity factor used in the Steam Electric cost model.

## Development of Chemical Precipitation Operation and Maintenance Costs:

Additional information regarding the query performed to extract pertinant information from This Excel workbook document EPA's derivation of annual wastewater treatment flows in gallons per year for plants operating chemical precipitation treatment of flue gas desulfurization wastewater. These annual plant flows are used to calculate certain cost factors, for example cost factors for maintenance labor and maintenance materials (see DCN SE01825.A46 'CBI_Chem Precip

Documents the development of annual plant chemical precipitation wastewater treatment flows, using certain plant responses to the Steam Electric Survey . To select plant responses used to develop the plant flows, EPA started by extracting capital costs for all wastewater treatment systems for plants operating chemical precipitation systems (as ma rked in B7-4 or identified via further evaluation of plant responses). Next, EPA excluded from the dataset records for those wastewater treatment systems that do not treat FGD wastewater, and systems subsequently determined by

EPA to not use chemical precipitation. Also documents development of the capacity factor used in the Steam
Documents Steam Electric Survey data excluded from use in this analysis because the data do not represent treatment of flue gas desulfurization wastewater. Documents Steam Electric Survey data excluded from use in this analysis because the data do not represent treatment of flue gas desulfurization wastewater using chemical
Documents identification of new FGD wastewater treatment sy stems excluded in developing the capacity factor used in the Steam Electric cost model.

### All plant-level data has been removed from this tab as a result of CBI sanitization. All data for wastewater treatment systems used to determine flow factors is considered CBI or CBI deducible.

### All plant-level data has been removed from this tab as a result of CBI sanitization. All data for wastewater treatment systems used to determine flow factors is considered CBI or CBI deducible.

### All plant-level data has been removed from this tab as a result of CBI sanitization. All data for wastewater treatment systems used to determine flow factors is considered CBI or CBI deducible.

### All plant-level data has been removed from this tab as a result of CBI sanitization. All data for

**wastewater treatment systems determined to not treat FGD wastewater is considered CBI or CBI deducible.** 

### All plant-level data has been removed from this tab as a result of CBI sanitization. All data for wastewater

**treatment systems determined to not be chemical precipitation systems is considered CBI or CBI deducible.**plant_id FGD_id cbi_FGD_WWT_tbl FGD_slds_handling FGD_gen_purge FGD_WWTS_old_new

1185 FGD-B FALSE TH-1,VFB-1 Yes Existing 1185 FGD-A FALSE TH-1,VFB-1 Yes Existing 1245 FGD-A FALSE TH-1 Yes Existing 1245 FGD-B FALSE TH-2 Yes Existing 1493 FGD-A FALSE HYC-1, VFB-1 Yes Existing 1957 FGD-A FALSE -999 Yes Existing

3265 FGD-A FALSE HYC-4, VFB-4 Yes Existing

3709 FGD-A FALSE HYC-1, VFB-1&2 Yes Existing

3709 FGD-B FALSE HYC-2, VFB-1&2 Yes Existing 3719 FGD-B FALSE VF-1 Yes Existing 3719 FGD-A FALSE VF-1 Yes Existing 4533 FGD-B FALSE HYC-2, VFB-2 Yes Existing 4533 FGD-A FALSE HYC-1, VFB-1 Yes Existing 4679 FGD-A FALSE FP-1 Yes Existing 5762 FGD-B FALSE see comments Yes Existing 5762 FGD-A FALSE see comments Yes Existing 6370 FGD-A FALSE Gypsum Stacking Yes Existing 8013 FGD-B FALSE HYC-2, VF-1,VF-2 Yes Existing 8013 FGD-A FALSE HYC-1, VF-1,VF-2 Yes Existing 8065 FGD-A FALSE -999 Yes Existing 8179 FGD-D FALSE Gypsum Wet Stack Yes Existing 8179 FGD-C FALSE Gypsum Wet Stack Yes Existing 8179 FGD-B FALSE Gypsum Wet Stack Yes Existing 8179 FGD-A FALSE Gypsum Wet Stack Yes Existing

9161 FGD-A FALSE HYC-1, HYC-2, HYC-3, VFB-1, VFB-2, VFB-3 Yes Existing 9166 FGD-A FALSE -111 Yes Existing 9971 FGD-A FALSE HYC-1, VF-1 Yes ExistingFGD_WWTS FGD_WWT_max FGD_WWT_24avg FGD_WWT_date_online

Pond-1 100 83 7-2011 Pond-1 100 83 7-2011 SPD-1 60 50 01/2013 SPD-1 60 50 01/2012 SPD-1, SW 85 79 04/2011 -999 -999 -999 -999EQ-P, CP-1-1, CP-1-2, CL-P-1, CL-P-2, CL-S-1, CLS-2, CP-2-1, CP-2-2, PH-1 630 630 01/2012 EQ-P, CP-1-1, CL-P-1, CL-P-2, EQ-S, CP-2-1, CP-3- 1, CP-4-1, CL-S-1, CL-S-2, FLT-S-1, FLT-S-2, HT, PH-1 354 240 01/2012 EQ-P, CP-1-1, CL-P-1, CL-P-2, EQ-S, CP-2-1, CP-3- 1, CP-4-1, CL-S-1, CL-S-2, FLT-S-1, FLT-S-2, HT, PH-1 354 240 05/2012 MFA 2000 750 6/2013 MFA 2000 750 6/2013 EQ-s,CP1-1, CP2-1, CLP-1, FLTS-1 60 40 2014 EQ-s,CP1-1, CP2-1, CLP-1, FLTS-1 60 40 2014 CL-P-1, EQ-P, CP-1-1, CP-2-1, EQ-S 300 75 05/2011 SPD-4 1100 850 12/2013 SPD-4 350 260 12/2014 SPD-2 350 260 12/2014 SPD-3 17.5 17.5 03/2011 SPD-3 17.5 17.5 03/2011 -999 -999 -999 -999 SPD-1 6.5 6.2 05/2012 SPD-1 6.5 6.2 01/2011 SPD-1 6.5 6.2 05/2013 SPD-1 6.5 6.2 01/2014EQ-P, CP-1-1, CP-1-2, CL-P-1, CL-P-2, CL-S-1, CLS-2, CP-2-1, CP-2-2, PH-1 -111 807 01/2011 POND-1, POND-A 400 400 4/2011 VF-1,HT,ST 100 50 06/2011Notes

Contains data from the following survey questions: A1-1 Plant Nam e B7-4 FGD purge wastewater treatment D5-3 WWT system definition

Purpose: Lists flow rates for all W WT systems at plants that have CP systems (as marked in B7-4 and based on evaluation of systems that did not mark CP in B7-4). Note: while only

plants with CP systems are included, some of these plants have multiple treatment systems, including non-CP systems. All of the systems (including non-CP systems) are included.