Dominion Virginia City Hybrid Energy Center
Response to Data Request
Bruce Buckheit, Member, Air Pollution Control Board
Table of Contents
| Response Number | Data Page | Data Request |
|---|---|---|
Pg 2 | Ability to require coal cleaning/washing | |
Pg 3-5 | Plausible SO2 and Hg control efficiencies | |
Pg 6 Footnote 8 | Supercritical CFB commercial availability | |
Pg 5-6 | Prepare top down BACT spreadsheet | |
Pg 7 | Summarize environmental impacts of coal waste piles | |
Pg 7 | Identify current management practices for newly generated coal waste | |
Pg 7 | Identify waste coal piles that are causing environmental harm | |
Pg 6 Footnote 9 | Impact of ash on boiler efficiency compared to coal washing impacts | |
Pg 7 Footnote 10 | BACT cost allocation to multiple pollutants controlled by same device | |
Pg 8 | Fate of Hg and other metals combusting waste coal | |
Pg 8 | Will the ash be managed in a quantifiably improved manner than current materials? | |
Pg 8 | Constraints on use of ash | |
Pg 8 | Are toxic metals more bio-available through combustion than if left in GOB piles? | |
Pg 8 | To what extent are the waste coal pile “orphan wastes” | |
Pg 8 | Economic impact of reduced PM2.5 emissions | |
Pg 9 | Acid rain impacts | |
Pg 9 | Environmental impacts of burning biomass | |
Pg 10 | Economic impact of coal washing | |
Pg 10 | Impact of coal washing and biomass on GHG emissions | |
Pg 10 | Project delay impacts on energy supply | |
Pg 11 | Identify lowest permit limit for PM, SO2, Hg | |
Pg 11 | Identify emission levels for cleanest units | |
Pg 11 | Review stack test data and CEMS data to determine variability of control device performance | |
Pg 11 | Evaluate SO2 control performance based on limestone feed rate | |
Pg 11-12 | Calculation of SO2 removal efficiency | |
Pg 12 | SO2 control specifications | |
Pg 13 | Plot of SO2 CEMS data from Dominion’s newest coal unit and Craig Station | |
Pg 13 | SO2 limit at low loads | |
Pg 14 | Mercury control from coal washing | |
Pg 14-15 | Actual performance versus permit limit | |
Pg 15-16 | Coal washing effect on PM, PM2.5, CO, and HAPs control | |
Pg 16 | PM control efficiency calculation | |
Pg 17 | Discuss why air to cloth ration of 2:1 is not appropriate | |
Pg 18 | Impact of coal washing on NOX emissions | |
Pg 18 | CO top down BACT analysis | |
Pg 18 | CO evaluation for MACT related to organic HAPS | |
Pg 19 | Impact of fuels on acid gases | |
Pg 19 | Review local biomass availability and environmental impacts | |
Pg 21 | Provide specific information about the current state of technical development, commercialization, and number of pending orders for super critical CFB boilers | |
Pg 26 | Evaluate CO2 capture and sequestration | |
Pg 26-27 | Expand the MACT analysis of best performing similar units | |
Pg 27 | Assess characterization of waste coal or GOB as a commercial fuel or waste | |
Pg 22-25 | Efficiency impact of proposed fuel | |
Pg 10 | Effect of rate incentive for carbon capture compatible on cost of alternatives | |
Pg 13 | Chart titled “SO2 emissions (best spray dryers)” |