APPENDIX F

MOBILE6.2 Input Parameter Summary

Table 1: General Parameters and Options

Input parameter	Summer Wkd

Output Pollutants	VOC, NOX

Analysis Day	Avg Weekday               (Jun, Jul, Aug)

Counties	Cecil

Traffic Data	 

SHA Universal Highway Database

Source Data Year	2005

HPMS VMT Adjustment Year	2005

SHA Seasonal Factor Data	2005

SHA Hourly Pattern Data	2005

MOBILE6 Defaults Used to 

Disaggregate Auto, Truck, Bus, MC Vehicle Mix Categories	2005

Traffic Volume Forecasted Growth 	Extrapolated growth based on 1990-2005
HPMS VMT

M6 Parameters	 

Emissions

Calendar Year	2009

Evaluation Month	7 (July)

Season	1 - Summer

CAAA Standards	Enabled

Tier2 Standards	Enabled

2007 HDDV Rule	Enabled

North-East NLEV	Included

Refueling Emissions	Not Included

Registration Data	2005 from MDE

Diesel Sales Fractions	2005 from MDE

VMT by Hour	2005 Local Data 

(varies by cty, fc)

VMT by Facility	Each facility run as 

separate scenario

VMT by Speed	Calculated by PPSUITE



Table 2: Inspection/Maintenance Program Input Parameters

MOBILE6 I/M

Test Types:	2009

I/M Program	EVAP OBD & GC	OBD I/M	IM240*	IDLE	IDLE

Program Start Year	2002	1984	1984	1984	1984

I/M Stringency

20.0	20.0	20.0	20.0

I/M Model Years





	First Year	1996	1996	1984	1977	1977

Last Year	2050	2050	1995	2050	1983

I/M Waiver Rates





	Pre-81 Model Years	5.4%	5.4%	13.8%	13.8%	13.8%

Post-81 Model Years	5.4%	5.4%	13.8%	13.8%	13.8%

I/M Compliance	96.0%	96.0%	96.0%	96.0%	96.0%

Program Type:

Test Only (T/O)

Test & Repair computerized (TRC)

Test & Repair Manual (TRM)	T/O	T/0	T/O	T/O	T/O

Inspection Frequency

Annual / Biennial	2	2	2	2	2

I/M Vehicles

1 = I/M Benefits not calculated

2 = I/M Benefits calculated





	LDGV	2	2	2	1	2

LDGT1	2	2	2	1	2

LDGT2	2	2	2	1	2

LDGT3	2	2	2	1	2

LDGT4	2	2	2	1	2

HDGV2B	1	1	1	2	1

HDGV3	1	1	1	2	1

HDGV4	1	1	1	2	1

HDGV5	1	1	1	2	1

HDGV6	1	1	1	2	1

HDGV7	1	1	1	1	1

HDGV8A	1	1	1	1	1

HDGV8B	1	1	1	1	1

GAS BUS	1	1	1	1	1

I/M Grace Period	2	2	2	2	2

* Uses 75% Cutpoints for 2009 and varies by year.Table 3:
Anti-Tampering Program Input Parameters

ATP Parameters	Cecil County

Program Start Year	89

I/M Model Years

	First Year	77

Last Year	83

I/M Vehicles

1 = I/M Benefits not calculated

2 = I/M Benefits calculated

	LDGV	2

LDGT1	2

LDGT2	2

LDGT3	2

LDGT4	2

HDGV2B	2

HDGV3	2

HDGV4	2

HDGV5	2

HDGV6	2

HDGV7	1

HDGV8A	1

HDGV8B	1

GAS BUS	1

Inspection Frequency:

Annual

Biennial	2

I/M Compliance	96.0%

Inspections Performed:

1 = Not Performed

2 = Performed

	Air Pump System	1

Catalyst Removal	2

Fuel Inlet Restrictor	2

Tailpipe Lead Deposit Test	1

EGR System	1

Evaporative Control System	1

PCV System	1

Gas Cap	2



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Appendix C-3

