Appendix B

Public Agency Survey
B - 1

Public Agency Survey

Background

In an effort to better assess the use of portable diesel-fueled engines by local public

agencies, ARB surveyed public agencies, requesting information on the use of the

engines, characteristics of the engines (make and model, year of manufacture, and

manufacturers rated horsepower), and annual hours of operation. The public

agencies surveyed included city and county public works departments, city and

county water suppliers, publicly owned treatment facilities, public landfills,

universities and colleges, prisons, and other miscellaneous state and local agencies.

The ARB staff mailed out over 1,000 surveys in the spring of 2002, and about 15

percent of the public agencies responded. A copy of the survey is attached to this

Appendix.

Additional information on portable engines used by public agencies is available from

engines registered by public agencies and from a separate survey administered by a

consultant under contract with the ARB's Mobile Source Control Division.

Information for these engines is included, as appropriate, as part of the survey

results discussed below.

Overall, information for about 1,500 portable diesel-fueled engines operated by

public agencies was gathered, representing an estimated 25 percent of the total

engines used by public agencies.

Survey Results

The following summarizes the results of the survey:

ß Portable engines used by public agencies are typically less than 150

horsepower—very few engines are larger than 500 horsepower;

ß Most common applications are compressors, generators, water pumps,

and wood chippers—representing 75 percent of the applications;

ß Most of the pumps and generators, about 70 percent, are operated less

than 50 hours per year and about half of the compressors are operated

less than 50 hours per year. Overall, about 65 percent of the engines

operated by public agencies operate less than 50 hours per year; and

ß About 50 percent of the portable diesel-fueled engines used by cities and

county public agencies are certified engines, and 25 percent of the

portable diesel-fueled engines used by State and federal public agencies

are certified engines.
Winston H. Hickox

Agency Secretary

B-2

Air Resources Board

Alan C. Lloyd, Ph.D.

Chairman

1001 I Street • P.O. Box 2815 • Sacramento, California 95812 • www.arb.ca.gov

Gray Davis

Governor

March 27, 2002

Dear Sir or Madam:

The California Air Resources Board (ARB) is in the process of developing regulatory measures

to reduce particulate matter emissions from diesel-fueled engines, in this case, portable

engines. To support this effort, ARB staff is gathering information on the type and operation

characteristics of portable diesel-fueled engines owned and operated by state/local

governments or municipalities. Staff is also identifying candidate equipment for emissions

testing purposes. The test results will be used to help evaluate the feasibility of emission

controls for portable diesel-fueled engines.

Portable diesel-fueled engines are engines that perform work but do not remain in one location

for more than 12 months. For example, portable diesel-fueled engines include portable

electrical generators, pumps and compressors. Portable engines do not include engines that

provide power to propel the equipment or vehicles from location to location.

If your agency owns or operates portable equipment powered by diesel-fired engines, we are

requesting that you provide some basic information on the equipment, type of engine, and

operation frequency.

We would appreciate you taking time to complete the survey on the backside of this letter.

When completed, tri-fold and staple the letter, so that the ARB address shows up on the

outside. Please return the completed survey by May 1, 2002.

 If you have any questions, please contact Mr. Glen Villa of my staff at (916) 322-6456 or by

e-mail at gvilla@arb.ca.gov. Thank you for your cooperation.

------------------------------------------------------Fold Here ----------------------------------------------------------

____________________ Place

____________________ Stamp

____________________ Here

California Air Resources Board

Stationary Source Division

Attn: Glen Villa

P.O. Box 2815

Sacramento, CA 95812
B-3

Survey of Portable Diesel-Fueled Engines Owned by State / Local Governments or Municipalities

1. List the application(s) of portable diesel-fueled engines at your facility. Application-Use of engine. I.e. pump,

compressor, generator. Model Year (MY)-date of manufacture. Horsepower (HP)-manufacturers rated HP.

Hrs/yr-How many hours did the engine operate 1/1/01 to1/1/02? See example. (Please make additional copies

if needed)

Application ___Pump _ Make/Model John Deere 4045DF150 MY 01 _ HP_ 106 Hrs/yr 1000 _

Application ___ _ Make/Model MY _ HP_ Hrs/yr _

Application ___ _ Make/Model MY _ HP_ Hrs/yr _

Application ___ _ Make/Model MY _ HP_ Hrs/yr _

Application ___ _ Make/Model MY _ HP_ Hrs/yr _

Application ___ _ Make/Model MY _ HP_ Hrs/yr _

Application ___ _ Make/Model MY _ HP_ Hrs/yr _

Application ___ _ Make/Model MY _ HP_ Hrs/yr _

Application ___ _ Make/Model MY _ HP_ Hrs/yr _

Application ___ _ Make/Model MY _ HP_ Hrs/yr _

Application ___ _ Make/Model MY _ HP_ Hrs/yr _

Application ___ _ Make/Model MY _ HP_ Hrs/yr _

Application ___ _ Make/Model MY _ HP_ Hrs/yr _

Application ___ _ Make/Model MY _ HP_ Hrs/yr _

Application ___ _ Make/Model MY _ HP_ Hrs/yr _

Application ___ _ Make/Model MY _ HP_ Hrs/yr _

2. Who should we contact if we have additional questions regarding the survey?

Contact Name:______________________________________________________________________

Facility Name: ______________________________________________________________________

Address: _______________________________________________________________________

Phone Number:__________________________ Fax Number: ________________________________

E-mail address:__________________________

Please add me to ARB’s mailing list for diesel particulate matter regulatory development activities?

Yes No (Circle One)