Facility _Information facility _id utility

_code legal_owner_nam e

legl_operator_name

legal_address_type

legal_address

legal_city legal_state legal_zip 546 22380 NRG Montville Operations Inc Montville Power LLC

legal owner74 Lathrop Road Uncasville CT 06382 Page 1Facility _Information plant_nam e

physical_address

phyical_city

physical_state

physical_zip

mailing_address

mailing_city

mailing_state

mailing_zip Montville Station

74 Lathrop Road

Uncasville CT 06382 74 Lathrop Road Uncasville CT 06382 Page 2Facility _Information RFA_small_entity

ff_fired_coal

ff_fired_oil ff_fired_ngas ff_fired_petcoke

ff_fired_other

ff_permitted_coal

ff_permitted_oil

ff_permitted_ngas No FALSE TRUE TRUE FALSE FALSE FALSE TRUE TRUE Page 3Facility _Information ff_permitted_petcoke

ff_permitted_other

deviation_reporting

continuous_emissions

cem_provided

facility _note FALSE FALSE 10-day Opacity Deviation ReportFor any HAP , no later than 24 hours after such deviation commencedFor any other regulated pollutant , no later than 10 days after such deviation commenced No Connecticut Department of Environmental Protection The percentage on a mass or volume basis cannot be obtained when comparing #6 Oil and Natural gas. A value of 100 was input in order to pass the completeness test and allow for submittal.NRG-Montville Station has not contracted or installed any control technologies for HAPS Page 4Facility _Information The percentage on a mass or volume basis cannot be obtained when comparing #6 Oil and Natural gas. A value of 100 was input in order to pass the completeness test and allow for submittal.NRG-Montville Station has not contracted or installed any control technologies for HAPS Page 5Facility _Information The percentage on a mass or volume basis cannot be obtained when comparing #6 Oil and Natural gas. A value of 100 was input in order to pass the completeness test and allow for submittal.NRG-Montville Station has not contracted or installed any control technologies for HAPS Page 6Facility _Information The percentage on a mass or volume basis cannot be obtained when comparing #6 Oil and Natural gas. A value of 100 was input in order to pass the completeness test and allow for submittal.NRG-Montville Station has not contracted or installed any control technologies for HAPS Page 7facility _contacts facility _id contact_id contact_title contact_name

contact_phone1

contact_phone2

contact_email

contact_primary 546 1 General Manager-NE Oil and Gas Operations David J DesRoberts

8603436960

8603675823

David.DesRoberts@nrgenergy.com

FALSE 546 2 Environm ental Engineer Timothy R Sisk 8608486017

8603348081

Tim.Sisk@nrgenergy.com

TRUE Page 8facility _coal_utilized facility _id coal_type percentage_mass percentage_btu

synfuel_type

coal_note Page 9facility _oil_utilized facility _id oil_type percentage_volume percentage_btu

other_type 546 No.6 Fuel Oil (residual or bunker C) 100 77 546 other (specify) 0 23 Natural Gas Page 10facility _other_materials facility _id other_material

permitted_burn

actually _burn other_quantity

other_quantity

_units other_note rcra_utilize rcra_explain Page 11facility _other_materials rcra_explain Page 12boiler_information

facility _id boiler_id boiler_type boiler_other bottom_design

design_fuelheat_input max_heat_input MWe_capacity 546 5 Tangential firing Dry Bottom coal 995 995 81 546 6 Tangential firing Dry Bottom fuel oil 4658 4658 414.9 Page 13boiler_information

MWe_net_capacity

design_gross_efficiency

operating_gross_efficiency

design_pressure

operating_pressure

design_temp

operating_temp

design_reheat_multiple

design_reheat_temp1 81 89.64 89.64 1675 1500 1000 1000 FALSE 1000 410 86.58 86.58 2250 1980 955 955 FALSE 955 Page 14boiler_information

design_reheat_temp2

operating_reheat_multiple

operating_reheat_temp1

operating_reheat_temp2

hours_operated

vg_capacity

_factor applicable_NSPS

retirement_year

retirement_year_CBI FALSE 1000 532.3 3.24 N TRUE FALSE 955 243.7 0.86 N TRUE Page 15boiler_information

NOx_control

SO2_control

combustion_additives No No No No No No Page 16boiler_fuels

facility _id boiler_id fuel_type fuel_year percentage_massvol percentage_btu

other_type 546 5 natural gas 2007 0 63 546 5 natural gas 2008 0 55 546 5 natural gas 2009 0 37 546 5 oil - residual or bunker 2007 100 37 546 5 oil - residual or bunker 2008 100 45 546 5 oil - residual or bunker 2009 100 63 546 6 oil - residual or bunker 2007 100 100 546 6 oil - residual or bunker 2008 100 100 546 6 oil - residual or bunker 2009 100 100

Page 17boiler_control_NOx

facility _id boiler_id NOx_type NOx_other NOx_online Page 18boiler_control_SO2

facility _id boiler_id SO2_type SO2_other SO2_online Page 19boiler_additives

facility _id boiler_id boiler_additive additive_other

additive_online Page 20facility _units facility _id unit_id 546 5 546 6 Page 21unit_boilers

facility _id unit_id boiler_id 546 5 5 546 6 6 Page 22facility _controls facility _id control_id control_group control_type

control_other

legacy _control cntrol_online

control_offline

NOx_reagent 546 5P PM control Electrostatic precipitator, cold side, w/o flue gas conditioning FALSE 12/1/1953 Page 23facility _controls reagent_other

NOx_ammonia

SO2_sorbent

oher_sorbent

SO2_scrubber_additive Page 24facility _sampling_ports facility _id sampling_port_id 546 5,1 546 5,2 546 5,3 546 5,4 546 5,5 546 6,1 546 6,2 546 6,3 546 6,4 546 6,5 Page 25facility _stacks facility _id stack_id stack_height stack_diameter

sack_gas_velocity 546 5S 258 10.9 60 546 6S 409 18 108 Page 26configurations

facility _id configuration_id 546 5 546 6 Page 27configuration_components

facility _id configuration_id

component_id

order component_type port_near 546 5 5 1 Unit 546 5 5,1 3 Sam pling Port next 546 5 5,2 4 Sam pling Port next 546 5 5,3 5 Sam pling Port next 546 5 5,4 6 Sam pling Port next 546 5 5,5 7 Sam pling Port next 546 5 5P 2 PM control 546 5 5S 8 Stack 546 6 6 1 Unit 546 6 6,1 2 Sam pling Port next 546 6 6,2 3 Sam pling Port next 546 6 6,3 4 Sam pling Port next 546 6 6,4 5 Sam pling Port next 546 6 6,5 6 Sam pling Port next 546 6 6S 7 Stack Page 28configuration_pollutants1

facility _id configuration_id

pollutant_nam e

permit_type_1

em lim it_1 em lim it_units_1 avg_period_1

em lim it_2 em lim it_units_2 546 5 Nitrogen Oxide (NOx) State - State Operating Permit

0.25 pound per million British Thermal Unit (lb/MMBtu)

24 hours 0.2 pound per million British Thermal Unit (lb/MMBtu) 546 5 Total Suspended Particulates (TSP) State - State Operating Permit

0.14 pound per million British Thermal Unit (lb/MMBtu)

24 hours 0.12 pound per million British Thermal Unit (lb/MMBtu) 546 5 Sulfur Dioxide (SO2) State - State Operating Permit

0.33 pound per million British Thermal Unit (lb/MMBtu)

24 hours 546 6 Nitrogen Oxide (NOx) State - State Operating Permit

0.25 pound per million British Thermal Unit (lb/MMBtu)

24 hours 0.15 pound per million British Thermal Unit (lb/MMBtu) 546 6 Sulfur Dioxide (SO2) State - State Operating Permit

0.33 pound per million British Thermal Unit (lb/MMBtu)

24 hours 546 6 Total Suspended Particulates (TSP) State - State Operating Permit

0.14 pound per million British Thermal Unit (lb/MMBtu)

24 hours Page 29configuration_pollutants1

avg_period_2

em lim it_3 em lim it_units_3 avg_period_3

em lim it_4 em lim it_units_4 avg_period_4

em lim it_details

test_method 24 hours 0.15 pound per million British Thermal Unit (lb/MMBtu) 24 hours Less than or equal to 0.25 lbs/MMBTU while operating on oil, 0.20 lbs/MMBTU while operating on natural gas during the Ozone Season. Less than or equal to 0.15 lbs/MMBTU heat input non-ozone season while operating on oil and natural gas 24 hours 0.1 pound per million British Thermal Unit (lb/MMBtu) 24 hours Less than or equal to 0.14 lbs/MMBTU while operating on residual oil Less than or equal to 0.12 lbs/MMBTU while operating on distillate oil Less than or equal to 0.10 lbs/MMBTU while operating on natural gas The emission limit is actually less than or equal to 0.33 lb/mmbtu for each calendar quarter. The drop down did not allow for the corrcet averaging. 24 hours Less than or equal to 0.25 lbs/MMBTU while operating during the Ozone Season. Less than or equal to 0.15 lbs/MMBTU heat input non-ozone season The emission limit is actually less than or equal to 0.33 lb/mmbtu for each calendar quarter. The drop down did not allow for the corrcet averaging. Page 30configuration_pollutants1

em rate em rate_units guarantee_level

_explain

req_monitoring

eq_recordkeeping

req_reporting 0.25 pound per million British Thermal Unit (lb/MMBtu)

No Less than or equal to 0.25 lbs/MMBTU while operating on oil, 0.20 lbs/MMBTU while operating on natural gas during the Ozone Season. Less than or equal to 0.15 lbs/MMBTU heat input non-ozone season while operating on oil and natural gas CEMS CEMS DATA Quarterly

EDRS and Reporting to the CTDEP 0.14 pound per million British Thermal Unit (lb/MMBtu)

No Less than or equal to 0.14 lbs/MMBTU while operating on residual oil Less than or equal to 0.12 lbs/MMBTU while operating on distillate oil Less than or equal to 0.10 lbs/MMBTU while operating on natural gas Fuel Usage multiplied by AP-42 Factor Annual Spreadsheet

No reporting is required 0.33 pound per million British Thermal Unit (lb/MMBtu)

No The emission limit is actually less than or equal to 0.33 lb/mmbtu for each calendar quarter. The drop down did not allow for the corrcet averaging. CEMS CEMS DATA Quarterly

EDRS and Reporting to the CTDEP 0.25 pound per million British Thermal Unit (lb/MMBtu)

No Less than or equal to 0.25 lbs/MMBTU while operating during the Ozone Season. Less than or equal to 0.15 lbs/MMBTU heat input non-ozone season CEMS CEMS DATA Quarterly

EDRS and Reporting to the CTDEP 0.33 pound per million British Thermal Unit (lb/MMBtu)

No The emission limit is actually less than or equal to 0.33 lb/mmbtu for each calendar quarter. The drop down did not allow for the corrcet averaging. CEMS CEMS DATA Quarterly

EDRS and Reporting to the CTDEP 0.14 pound per million British Thermal Unit (lb/MMBtu)

No Fuel usage multiplie by AP-42 Factor Annual Spreadsheet

No reporting is required Page 31configuration_pollutants1 Quarterly

EDRS and Reporting to the CTDEP Quarterly

EDRS and Reporting to the CTDEP Quarterly

EDRS and Reporting to the CTDEP Quarterly

EDRS and Reporting to the CTDEP Page 32control_technologies

facility _id configuration_id

component_id

control_id project_titleproject_type vendor_name

vndor_contact

vendor_phone Page 33control_technologies

vendor_address

vndor_city

vendor_state

vendor_zip actual_start_date projected_start_date

end_date sorbent chemical_additive Page 34control_technologies

injection_point

HAP_em ission_reduction

HAP_em ission_rate

HAP_em ission_rate_units

HAP_achieved_reduction

HAP_achieved_rate

HAP_achieved_rate_units

feed_rate feed_rate_units Page 35control_technologies feed_rate_units Page 36control_coal_ranks

facility _id configuration_id

component_id

control_id coal_type

Page 37control_pollutants1

facility _id configuration_id

component_id

control_id pollutant_nam e

Page 38control_costs

facility _id configuration_id

component_id

control_id boiler_retrofit boiler_new_install

total_capital_investm ent

total_operating_costs

base_year Page 39control_costs

CBI Page 40misc_controls

facility _id misc_control_id

control_description Page 41misc_control_configurations

facility _id misc_control_id

configuration_id Page 42fuel_shipments

facility _id shipment_id

shipment_date

am ount_received

am ount_units

fuel_type state_country other_country

county 546 50301 1/1/2009 38467 barrels oil NJ NJ - Hudson Page 43fuel_shipments

coal_seam shipment_method NJ - Hudson Barge Page 44fuel_shipment_configurations

facility _id shipment_id

configuration_id 546 50301 5 546 50301 6 Page 45fuel_shipment_samples

facility _id shipment_id

sample_id am ount_fuel am ount_fuel_units

total_sulfur ash_content heating_value

hating_units 546 50301 50301-13 1634848 gallons 0.276 0.066 18921 Btu/gal Page 46fuel_shipment_samples

chlorine chlorine_units fluorine fluorine_units data_provided

data_other_specified

supplier_type

supplier_name

supplier_address contractual obligations Fuel supplier Moran Tank Barge Company

50 Locust Avenue Page 47fuel_shipment_samples

supplier_city

supplier_state

supplier_zip

lab_nam e lab_address lab_city lab_state lab_zip analysis_copies New Canaan

CT 06840 NMC GLOBAL CORPORATION 1100 Walnut Street

Roselle NJ 07203 No Page 48fuel_shipment_samples analysis_copies Page 49fuel_sample_pollutants

facility _id shipment_id

sample_id fuel_pollutant pollutant_conc

pollutant_conc_units

pollutant_conc_ND

pollutant_conc_MDL 546 50301 50301-13 Vanadium(V) 1 parts per million (dry) (ppm) FALSE Page 50test_reports

facility _id report_id report_type other_type report_description report_begin_date

report_end_date

before_control

during_deviation 546 Particulate Testing

compliance Demonstarte that the emissions of particulate matter (PM) from Unit #6 are in compliance with the corresponding emission limit. 7/26/2007 7/26/2007 No No Page 51test_reports

deviation_reports No Page 52test_report_configurations

facility _id report_id configuration_id 546 Particulate Testing

6 Page 53test_report_fuels

facility _id report_id fuel_id 546 Particulate Testing

No. 6 Page 54test_report_fuel_types

facility _id report_id fuel_id fuel_type percentage_massvol percentage_btu

other_type 546 Particulate Testing

No. 6 oil - residual or bunker 100 100 Page 55cem_data

facility _id tim e_period

cem_period_description 546 1995 The CEMS was installed in 1995, and data is available from that point forward. All additional reports and data are required to be held for 5 years. Montville Station has the required documentation and data, and has the majority of the historical data. Page 56cem_data The CEMS was installed in 1995, and data is available from that point forward. All additional reports and data are required to be held for 5 years. Montville Station has the required documentation and data, and has the majority of the historical data. Page 57cem_data The CEMS was installed in 1995, and data is available from that point forward. All additional reports and data are required to be held for 5 years. Montville Station has the required documentation and data, and has the majority of the historical data.

Page 58cem_data_pollutants1

facility _id tim e_period

pollutant_nam e 546 1995 Nitrogen Oxide (NOx) 546 1995 Sulfur Dioxide (SO2) 546 1995 Carbon Monoxide (CO) 546 1995 PM (Filterable) Page 59test_report_sampling

facility _id report_id sampling_port_id point_differ point_description befre_SO2_device

point_orientation

normal_bypass_percent

testing_bypass_percent 546 Particulate Testing

6S No No Page 60test_report_sampling

fg_fraction Page 61sampling_runs

facility _id report_id sampling_port_id run_id start_datetime end_datetim e

unit_load net_generation fg_moisture_content 546 Particulate Testing

6S 1 7/26/2007 7/26/2007 393.1 393.1 12.4 546 Particulate Testing

6S 2 7/26/2007 7/26/2007 396.4 396.4 12.6 546 Particulate Testing

6S 3 7/26/2007 7/26/2007 394.3 394.3 12.5 Page 62sampling_runs

fg_flow_rate

fg_flow_rate_units

standard_temperature

standard_pressure

normal_temperature

normal_pressure

fg_oxygen_content

fg_CO2_content

fg_temperature 921209 dscfm 2.4 14 885546 dscfm 2.8 13.6 925934 dscfm 2.6 13.8 Page 63sampling_runs

fg_pressure

Hg_loi test_method run_comments

fuel_id fuel_unit_load fuel_flow_rate

fuel_ash fuel_heating_value No. 6 393.1 No. 6 396.4 No. 6 394.3 Page 64sampling_runs

fuel_sulfur 0.3 0.3 0.3 Page 65sampling_run_pollutants1

facility _id report_id sampling_port_id run_id pollutant_nam e conc conc_units conc_ND conc_MDL 546 Particulate Testing

6S 1 PM (Filterable) FALSE 546 Particulate Testing

6S 2 PM (Filterable) FALSE 546 Particulate Testing

6S 3 PM (Filterable) FALSE Page 66sampling_run_pollutants1

em ission_rate

em ission_rate_units

em ission_rate_ND

em ission_rate_MDL

em ission_factor

em ission_factor_units

em ission_factor_ND

em ission_factor_MDL

run_pollutant_comment 302 pound per hour (lb/hr)

FALSE FALSE 69.69 pound per hour (lb/hr)

FALSE FALSE 84.46 pound per hour (lb/hr)

FALSE FALSE Page 67sampling_run_pollutants1 run_pollutant_comment Page 68sampling_run_fuel

facility _id report_id sampling_port_id run_id fuel_pollutant fuel_conc fuel_conc_units fuel_conc_ND

fuel_conc_MDL 546 Particulate Testing

6S 1 Vanadium(V) 1 parts per million (dry) (ppm) FALSE 546 Particulate Testing

6S 2 Vanadium(V) 1 parts per million (dry) (ppm) FALSE 546 Particulate Testing

6S 3 Vanadium(V) 1 parts per million (dry) (ppm) FALSE Page 69sampling_run_fuel fuel_conc_MDL Page 70