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Best Available Control Technology (BACT ) Guideline 3.2.8
Last Update: 9/9/1999


Limited Life (1,000 hr total max life) Diesel-Fired IC Engine - < 600 bhp, and Not Used to Drive an Electrical Generator
Pollutant Achieved in Practice or in the SIP Technologically Feasible Alternate Basic Equipment
CONon-selective catalytic reductionElectric motor
NOxCertified NOx emissions of 7.2 g/bhp-hr or less OR Turbocharger with intercooler or aftercooler and timing retarded 4° relative to standard timing OR Turbocharger with intercooler or aftercooler and injection timing not to be greater than 16° BTDC (this option may be used if it is consistent with District policy GEAR 16-1, “Determination of Injection Timing Retard for Diesel IC Engines”, dated 08/14/96)Selective catalytic reduction (SCR)1. Electric motor 2. Natural gas-fired IC engine 3. LPG-fired engine
PM10Low-sulfur diesel fuel (0.05% by weight sulfur or less) and positive crankcase ventilation (PCV) or crankcase control device that is 90% efficient1. Electric motor 2. Natural gas-fired IC engine 3. LPG-fired engine
VOCPositive crankcase ventilation (PCV)Non-selective catalytic reduction (NSCR) and PCV1. Electric motor 2. Natural gas-fired IC engine


BACT is the most stringent control technique for the emissions unit and class of source. Control techniques that are not achieved in practice or contained in s a state implementation plan must be cost effective as well as feasible. Economic analysis to demonstrate cost effectiveness is requried for all determinations that are not achieved in practice or contained in an EPA approved State Implementation Plan.

This is a Summary Page for this Class of Source. For background information, see Permit Specific BACT Determinations on Details Page.