The La Paloma Generating Company, LLC, the owner/operators of the La Paloma Generating Project, has requested to modify the project to clarify startup, shutdown, SCR ammonia injection temperature, increase the one-hour NOx limits, specify the cooling tower drift calculation factor, reduce the frequency of cooling tower sampling, and revise the description of the emergency diesel engines.
The modifications were approved by the San Joaquin Valley Air Pollution Control District and revised Permits to Operate were issued on October 9, 2003, December 19, 2003, and August 10, 2004.
The Energy Commission staff reviewed the petition and finds that it complies with the requirements of Title 20, Section 1769(a) of the California Code of Regulations and recommends approval of the La Paloma Generating Company's petition to modify the La Paloma Generating Project and amend related Conditions of Certification.
Based on staff's analysis, the Commission concludes that the proposed changes will not result in any significant impact to public health and safety, or the environment. The Commission finds that:
- The petition meets all the filing criteria of Title 20, section 1769(a) of the California Code of Regulations concerning post-certification project modifications,
- The modification will not change the findings in the Commission's Final Decision pursuant to Title 20, section 1755,
- The project will remain in compliance with all applicable laws, ordinances, regulations, and standards, subject to the provisions of Public Resources Code section 25525,
- The change will be beneficial to the project owner by allowing for operational efficiency and consistency with the air district permits, and
- There has been a substantial change in circumstances since the Commission certification that justifies the change because of the project owner's re-evaluation of operational issues that were not available during the siting process.
CONCLUSION AND ORDER
The California Energy Commission hereby adopts Staff's recommendations and approves the following changes to the La Paloma Generating Project's Decision. New text is underlined and deleted text is shown in
AQ-8 Startup is defined as the period beginning with turbine
initial firing light-off, or when the combustion turbine output is reduced to below minimum load (minimum megawatt output at which the combustion turbine achieves stable operation and maintains compliance with the lb/hr and ppmv emissions limits in Condition AQ-12) to engage the steam turbine, until the unit meets the lb/hr and ppmv emission limits in Condition AQ-12. again reaches minimum load. Shutdown is defined as the period beginning with initiation of turbine shutdown sequence and ending with either cessation of firing of the gas turbine engine, or when the unit ramps back up after an aborted shutdown and the unit reaches minimum load. Startup and shutdown durations shall not exceed three hours and one hour, respectively, per occurrence. [District Rule 2201 and 4001]
Verification: Please refer to Condition AQ-28.
AQ-9 The project owner may inject ammonia during startup when the selective catalytic reduction system is at least 302 degrees Fahrenheit, however ammonia must
Ammonia shall be injected during startup when the selective catalytic reduction system catalyst temperature exceeds 500 degrees Fahrenheit and selective catalytic system inlet concentrations exceed 2.5 ppmv NOx and as needed during normal operation to meet the NOx emissions limits. The project owner shall monitor and record catalyst temperature during periods of startup. [District Rule 2201]
Verification: The project owner shall record the SCR temperatures and the commencement of ammonia injection times in the daily logs required under Condition AQ-28.
AQ-10 During startup of any gas turbine engine(s), combined emissions from the four gas turbine engines (S-3412-1', '2, '3, and '4) heat recovery steam generator exhausts shall not exceed NOx (as NO2):
160 400 lbs, and CO: 2500 lbs in any one hour. [CEQA]
Verification: The project owner shall provide records of the emissions as part of the quarterly reports of Condition AQ-28.
AQ-52 Compliance with PM10 daily emission limits shall be demonstrated as follows: PM10 lb/day = cooling water recirculation rate * total dissolved solids concentration in the blowdown water * design drift rate*
correction factor0.5. [District Rule 2201]
Verification:The project owner shall compile the required daily PM10 emissions data and maintain the data for a period of five years. The project owner shall make the site available for inspection by representatives of the District, CARB and the Commission.
AQ-53 Compliance with PM10 emission limit shall be determined by quarterly cooling water sample analysi
s within 90 days of initial operation and weekly thereafter. If any quarterly testing results indicate noncompliance, weekly testing shall be conducted until eight (8) consecutive weeks of testing have demonstrated compliance, at which time quarterly sampling may resume. [District Rules 1081, 2201]
Verification: The project owner shall compile the required daily PM10 emissions data and maintain the data for a period of five years. The project owner shall make the site available for inspection by representatives of the District, CARB and the Commission.
Recommended Amendments to the Descriptions of the Diesel-Fired Engines
SJUVAPCD Unit No. S-3412-7 - 310 HP DETROIT DIESEL - ALLISON DDFP-L6FA DIESEL FIRED IC ENGINE POWERING EMERGENCY FIREWATER PUMP;
SJVAPCD Unit No. S-3412-14 - 240 HP CLARKE-DETROIT DIESEL - ALLISON JU6H-UF60 DIESEL FIRED IC ENGINE POWERING EMERGENCY FIREWATER PUMP;
UVAPCD Unit No. S-3412-8 - 475 587 HP CATERPILLAR MODEL 3406 C DIESEL FIRED IC ENGINE POWERING EMERGENCY ELECTRICAL GENERATOR #1 USED FOR GAS TURBINE ENGINE LUBE OIL CIRCULATION DURING POWER OUTAGES;
UVAPCD Unit No. S-3412-9 - 475 587 HP CATERPILLAR MODEL 3406 C DIESEL FIRED IC ENGINE POWERING EMERGENCY ELECTRICAL GENERATOR #2 USED FOR GAS TURBINE ENGINE LUBE OIL CIRCULATION DURING POWER OUTAGES;
UVAPCD Unit No. S-3412-10 - 475 587 HP CATERPILLAR MODEL 3406 C DIESEL FIRED IC ENGINE POWERING EMERGENCY ELECTRICAL GENERATOR #3 USED FOR GAS TURBINE ENGINE LUBE OIL CIRCULATION DURING POWER OUTAGES; and
UVAPCD Unit No. S-3412-11 - 475 587 HP CATERPILLAR MODEL 3406 C DIESEL FIRED IC ENGINE POWERING EMERGENCY ELECTRICAL GENERATOR #4 USED FOR GAS TURBINE ENGINE LUBE OIL CIRCULATION DURING POWER OUTAGES.
IT IS SO ORDERED.
Date: October 6, 2004
STATE OF CALIFORNIA
ENERGY RESOURCES CONSERVATION
AND DEVELOPMENT COMMISSION
/Signed by James D. Boyd