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EPA Mobile Regulations - USA

Tier Levels		Tier 2			Tier 3			Tier 4 Interm			Tier 4 Final
kWe, 60 HZ	HP	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017
37 - 55	49 - 74		(4.7) / 5.0 / 0.30				(4.7) / 5.0 / 0.03
56 - 74	75 - 99		(4.7) / 5.0 / 0.30				3.4 / 0.19 / 5.0 / 0.02			0.40 / 0.19 / 5.0 / 0.02
75 - 129	100 - 173	(4.0) / 5.0 / 0.30					3.4 / 0.19 / 5.0 / 0.02			0.40 / 0.19 / 5.0 / 0.02
130 - 224	174 - 301	(4.0) / 3.5 / 0.20				2.0 / 0.19 / 3.5 / 0.02
225 - 449	302 - 602	(4.0) / 3.5 / 0.20				2.0 / 0.19 / 3.5 / 0.02
450 - 560	603 - 751	(4.0) / 3.5 / 0.20				2.0 / 0.19 / 3.5 / 0.02
> 560	> 751	(6.4) / 3.5 / 0.20				3.5 / 0.40 / 3.5 / 0.10				3.5 / 0.19 / 3.5 / 0.04

EPA Non-Mobile Regulations - USA

HP	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015
0 - 24	T2	T2	T4
25 - 48	T2	T2	T4i					T4
49 - 74	T2	T2	T3				T4			T4
75 - 99	T2	T2	T3				T4i			T4
100 - 173	T2	T3					T4i			T4
174 - 751	T3	T3				T4i			T4
752 - 3000	T2	T2				T4i				T4
> 3000	T2	T2				T4i				T4

Emissions Standards

Emissions Standards

Airborne Noise

	130 db Pneumatic Riveter 120 db 110 db
	100 db Jet at 1000ft 90 db Power Mower 80 db Heavy Street Traffic
	70 db 60 db Normal Conversation 50 db Light Traffic at 100ft
	40 db Library 30 db 20 db Broadcast Studio

• Primarily a problem in outdoor gensets

• A System is Too Noisey If:

- Local Codes Exceeded (may be in 40-50 dBA range)

• Someone thinks it is

• Aftertreatment is Expensive

- Hearing Protection Required in Generator Rooms per OSHA

• Amount and Preception Depends on Background Noise Levels

• Logarithmic Bassis is Hard for Laymen to Understand

Sound Attenuation Strategies

Total Noise Level is SUM of all the Sources
• Mechanical Engine Noise
• Fan Noise
• Exhaust

Sound Attenuation

Featured Generators:

Cummins DQKAB Generator

Cummins - 2000 kW
Six (6) available, DQKAB, 480 Volt, Tier 2, Open Skid

Cummins - 1500 kW
Cummins DQGAB, 480 V, Tier 2, Sound Attenuated Enclosure, 3000g base tank

Cummins DQGAB Generator

Cummins - 1500 kW
One (1) available, DQGAB, 480 Volt, Tier 2, Open Skid

Cummins 1000kW DQFAD Generator

Cummins - 1000 kW
One (1) available, DQFAD, 277/480 Volt, Tier 2,
Open Skid

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