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Best Available Control Technology (BACT ) Guideline 3.2.7
Last Update: 11/8/2002


Diesel-Fired IC Engine - Low Use (= or < 1,000 hr/yr max) *RESCINDED 10/30/08 - See 3.2.11** < 600 bhp, Transportable, and not used to drive an Electrical Generator
Pollutant Achieved in Practice or in the SIP Technologically Feasible Alternate Basic Equipment
COOxidation catalyst
NOxCertified NOx emissions of 6.9 g/bhp-hr or less.Selective catalytic reduction (SCR).
PM100.1 grams/bhp-hr (if TBACT is triggered). 0.4 grams/bhp-hr (if TBACT is not triggered).
SOxLow-sulfur fuel (< 500 ppm sulfur, by weight). or Very low-sulfur fuel (< 15 ppm sulfur by weight), where available.
VOCPositive crankcase ventilation (PCV).Non-selective catalytic reduction (NSCR) and PCV.
1. Any engine model included in the ARB or EPA diesel engine certification lists and identified as having a PM10 emission rate of 0.149 grams/bhp-hr or less, based on ISO 8178 test procedure, shall be deemed to meet the 0.1 grams/bhp-hr requirement. 2. A site-specific Health Risk Analysis is used to determine if TBACT is triggered. 3. Revised 11/8/02 pursuant to CARB guidelines for Distributed Generation Equipment.

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.