EPA-452/R-05-006
June 2005
Economic Impact Analysis of the Standards of Performance for Stationary
Compression Ignition Internal Combustion Engines
By:
Brooks Depro
Katherine Heller
Alex Rogozhin
RTI International
Research Triangle Park, NC 27709
Prepared for:
John L. Sorrels, Project Officer
U.S. Environmental Protection Agency
Office of Air Quality Planning and Standards
Innovative Strategies and Economics Group
Research Triangle Park, NC 27711
Contract No. 68-D-01-078
U.S. Environmental Protection Agency
Office of Air Quality Planning and Standards
Innovative Strategies and Economics Group
Research Triangle Park, NC 27711
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CONTENTS
Section Page
1 Introduction 1-1
1.1 Executive Summary 1-2
1.2 Organization of this Report 1-3
2 Industry Profile 2-1
2.1 The Supply Side 2-1
2.1.1 Materials and Other Costs of Producing Equipment 2-1
2.1.1.1 Generator Sets and Welding Equipment 2-1
2.1.1.2 Pumps and Compressors 2-3
2.1.1.3 Irrigation Systems 2-5
2.1.2 Potential Changes in Material Inputs 2-5
2.2 The Demand Side 2-6
2.2.1 Generators and Welding Equipment 2-6
2.2.2 Stationary Pumps and Compressor Equipment 2-8
2.2.3 Irrigation 2-8
2.2.4 Empirical Data Elasticities 2-9
2.3 Industry Organization 2-10
2.3.1 Diesel Engines: The Equipment Firm's "Make" or
"Buy" Decision 2-10
2.3.2 Defining the Products that Constitute the Market 2-11
2.3.3 Key Firms Currently Participating in these Markets 2-11
2.3.3.1 Generators and Welders 2-11
2.3.3.2 Pumps and Compressors 2-11
2.3.3.3 Irrigation Equipment 2-12
2.3.3.4 Diesel Engines 2-13
2.3.4 Description of Small and Large Firms 2-13
2.3.5 Pricing Behavior in Equipment Markets 2-14
in
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2.4 Market Data 2-14
2.4.1 Baseline Quantities 2-15
2.4.2 Baseline Prices 2-16
2.4.3 Historical Data 2-16
2.4.4 Projections 2-17
3 Regulatory Program Cost Estimates 3-1
4 Economic Impact Analysis: Methods and Results 4-1
4.1 Analytical Approach 4-1
4.2 Diesel Equipment Markets Affected by the CI NSPS 4-4
4.3 Overview of Partial Equilibrium Model 4-5
4.3.1 Market Supply 4-5
4.3.2 Market Demand 4-8
4.3.3 Equilibrium Solution 4-9
4.4 Results 4-9
5 Small Business Impact Analysis 5-1
5.1 Description of Small Entities Affected 5-2
5.2 Small Business Screening Analysis 5-2
5.3 Assessment 5-5
References R-l
IV
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LIST OF FIGURES
Number Page
4-1 Derived Demand for Equipment from the Construction Industry 4-3
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LIST OF TABLES
Number Page
2-1 Motor and Generator Manufacturing: 1997 to 2002 ($billion) 2-2
2-2 Welding and Soldering Equipment Manufacturing: 1997 to 2002 ($billion) . . . 2-3
2-3 Pumps and Pumping Equipment Manufacturing: 1997 to 2002 ($billion) .... 2-4
2-4 Air and Gas Compressor Manufacturing: 1997 to 2002 ($billion) 2-4
2-5 Farm Machinery and Equipment Manufacturing: 1997 to 2002 ($billi on) .... 2-5
2-6 Generator Set and Welding Equipment Use by Industry: 1997 2-7
2-7 Pumps and Compressor Equipment Use by Industry: 1997 2-9
2-8 Empirical Demand Elasticity Estimates: Final Product Markets Where
Stationary Diesel Equipment is Used 2-10
2-9 Firm Market Shares by Equipment Market: 2000 2-12
2-10 Baseline Quantities for Engines and Equipment: 2015 2-15
2-11 Baseline Equipment Prices: 2015 2-16
2-12 Historical Unit Sales Data by Market: 1990-2000 2-17
2-13 Projected Annual Unit Sales for Nonemergency Cl Engines: Selected Years . 2-18
3-1 Summary of Total Costs Associated with the NSPS 3-1
4-1 Markets Included in Economic Impact Model 4-6
4-2a Baseline Data: Nonemergency Stationary Diesel Generator Sets and
Welders, 2015 4-7
4-2b Baseline Data: Nonemergency Stationary Diesel Pumps and
Compressors, 2015 4-7
VI
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4-2c Baseline Data: Nonemergency Stationary Diesel Irrigation Systems, 2015 . . . 4-7
4-3 Summary of Economic Impacts: 2015 4-10
4-4 Detailed Results for Generator and Welder Equipment: 2015 4-11
4-5 Detailed Results for Pump and Compressor Equipment: 2015 4-12
4-6 Detailed Results for Irrigation Equipment: 2015 4-12
4-7 Shift of Diesel Fuel Supply and Demand Quantities in 2015
(billion gallons) 4-13
5-1 Summary Statistics for SBREFA Screening Analysis 5-4
vn
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SECTION 1
INTRODUCTION
The Emission Standards Division (BSD) of the U.S. Environmental Protection
Agency's (EPA's) Office of Air Quality Planning and Standards (OAQPS) is developing a
proposal to implement New Source Performance Standards (NSPS) on compression ignition
(CI) stationary internal combustion engines by June 29, 2005. This proposal, which is in
response to a consent decree and is under the authority of Section 1 ll(b) of the Clean Air
Act, will address emissions for nitrogen oxides (NOX), sulfur dioxide (SO2), particulate
matter (PM), nonmethane hydrocarbons (NMHC), and carbon monoxide (CO) from new CI
engines. The requirements of the NSPS generally follow the nonroad diesel engine rule
developed by EPA's Office of Transportation and Air Quality (OTAQ). The proposed NSPS
contains requirements for owners, operators, and manufacturers of stationary CI engines. The
proposed NSPS requires manufacturers to certify their 2007 and later model year stationary
nonemergency CI engines to the Tier 2, Tier 3, and Tier 4 certification emission standards
for nonroad diesel engines for all the pollutants (except SO2). This NSPS proposal follows
most of the requirements of the final nonroad engine rule issued in 2004. All new stationary
CI engines ordered after the proposal date and manufactured after April 1, 2006 (or July 1,
2006, for fire pump engines) will be covered. Engine manufacturers must follow the
certification procedures and warranty, maintenance, installation, and labeling requirements
specified in the nonroad engine rule. Only certain new engines will have to put on controls in
response to this proposal. Emergency engines have to certify to the Tier 2 and Tier 3
standards. Nonemergency engines with engine displacement greater than or equal to 10
liters per cylinder and less than 30 liters per cylinder displacement have to certify to the Tier
2 standards for marine engines, and engines with displacement greater than or equal to 30
liters per cylinder do not have to be certified by engine manufacturers; the owners and/or
operators of engines with displacement greater than or equal to 30 liters per cylinder have to
meet NOX and PM limits. All other engines must be certified to the final Tier 4 emission
standards for all pollutants. Such engines are hereafter referred to as "subject stationary CI
engines."
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To support EPA's development of these standards, EPA's Innovative Strategies and
Economics Group (ISEG) has conducted an economic impact analysis (EIA) to assess the
potential costs of the rule. This report documents the methods and results of this EIA.
1.1 Executive Summary
EPA estimates the NSPS will result in significant increases in market prices but small
reductions in output of diesel-powered equipment using the affected engines. The economic
approach and engineering cost approach yield approximately the same estimate of the total
change in surplus ($39 million). However, the economic approach illustrates how costs flow
through the economic system and identifies important transitory impacts on stakeholders. In
addition, it identifies the distribution of welfare losses across affected markets. The key
results of the EIA are as follows:
• Engineering Costs (2002$): Total annualized costs measure the costs incurred by
affected industries annually. The average annualized costs for the rule totaled
approximately $57.1 million.
• Price and Quantity Impacts: The price impacts are significant; however, demand
responses to price changes are estimated to be small.
- The average prices for affected equipment are projected to increase between 2
and 10 percent. Generator set and welding equipment markets experience the
highest relative change in baseline price (9.4 percent).
- Production/consumption remain essentially unchanged, declining by less than
0.5 percent. The analysis shows that demand responses to price changes are
small because the elasticities of demand for the final products or services that
use affected equipment and the cost share of equipment in production of these
goods and services are small.
• Small Businesses: EPA performed a screening analysis for impacts on small
businesses by comparing compliance costs to baseline company revenues. When
we compare compliance costs (costs of controls, testing, and monitoring) to total
company revenue, the ratio of compliance cost to company revenue falls below 1
percent for 57 of the 60 small companies included in the screening analysis. Two
small businesses have costs between 1 and 3 percent of company sales, and one
small company has costs exceeding 3 percent of company sales. Assuming that
these small businesses or new businesses like them will be affected by the NSPS,
we do not believe that the CI NSPS will have a significant impact on a substantial
number of small entities.
• Social Costs (2002$): The economic model estimates a total social cost of the rule
of $57.0 million, including $19.0 million of recordkeeping and reporting costs
1-2
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borne largely by emergency equipment owners to record hours of nonemergency
operation. Equipment producers pass on essentially all costs of control to
downstream markets and consumers. Total consumer surplus change is -$37.6
million. Three-quarters of these losses occur in the generator set and welding
equipment markets.
• Energy Use Impacts: The NSPS proposes to reduce emissions of SO2 by requiring
the use of ultra-low sulfur diesel (ULSD) fuel. Use of low-sulfur fuel is required
beginning in 2007, and in the baseline year of analysis (2015), new stationary CI
equipment subject to the NSPS will be required to switch to ULSD fuel (i.e., must
consume fuel meeting a 15 ppm sulfur standard). As a result, demand for ULSD
fuel will increase and demand for high-sulfur No. 2 distillate will decline. Based
on review of fuel consumption data from the nonroad rule, the size of the shift in
quantities between these markets in 2015 is very small, and EPA anticipates this
change will have negligible influence on diesel fuel prices and
production/consumption choices.
1.2 Organization of this Report
The remainder of this report supports and details the methodology and the results of
the EIA:
• Section 2 presents a profile of the affected industry.
• Section 3 describes the estimated costs of the regulation.
• Section 4 describes the EIA methodology and reports market welfare impacts.
• Section 5 presents estimated impacts on small companies.
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SECTION 2
INDUSTRY PROFILE
2.1 The Supply Side
In this industry profile, we discuss related supply-side issues associated with
industries that manufacture equipment powered by diesel engines affected by the NSPS.
These industries provide three broad services: power (generator sets and welding
equipment), pumping and compression, and irrigation. In this section, we discuss two
important supply-side issues: costs of equipment production and technologies associated
with emission controls.
2.1.1 Materials and Other Costs of Producing Equipment
The U.S. Economic Census data provide production cost data by industry. Because
industry definitions are so broad, the data are limited in their ability to provide insight into
absolute expenditures levels; however, the statistics provide a reasonable proxy of the
relative importance of inputs in the manufacturing process. As discussed below, all of the
industries have similar distributions of production costs across materials, labor, and capital.
Diesel engine costs are approximately 1 to 2 percent of product value in these industries.
2.1.1.1 Generator Sets and Welding Equipment
The U.S. Economic Census classifies generator sets under "Motor and Generator
Manufacturing" (North American Industry Classification System [NAICS] 33512). This
industry comprises establishments primarily engaged in manufacturing electric motors
(except internal combustion engine starting motors), power generators (except battery
charging alternators for internal combustion engines), and motor generator sets (except
turbine generator set units). It also includes establishments rewinding armatures on a factory
basis.
2-1
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As shown in Table 2-1, the variable production costs include materials (including
energy), and labor. Of these categories, materials (including fuel and energy) represent about
half of the total product value. Within the materials category, diesel and semidiesel engines
account for approximately 2 percent of product value in 2002. Labor expenditures account
for approximately 13 percent, and other costs such as capital, transportation, marketing, and
markup represent the remaining 40 percent.
Table 2-1. Motor and Generator Manufacturing: 1997 to 2002 (Sbillion)
Year
2002
2001
2000
1999
1998
1997
Value of
Shipments
S9.1
S9.4
$10.0
$10.8
$11.6
$12.2
Cost of
Materials
$4.3
$4.5
$4.9
$5.4
$5.7
$6.0
Cost as a
Share of
Product
Value (%)
47%
48%
49%
50%
49%
49%
Labor
$1.2
$1.2
$1.3
$1.4
$1.5
$1.5
Cost as a
Share of
Product
Value (%)
13%
13%
13%
13%
13%
12%
Capital
$0.2
$0.2
$0.2
$0.3
$0.4
$0.3
Cost as a
Share of
Product
Value (%)
2%
2%
2%
3%
3%
2%
Source: U.S. Bureau of the Census. 2004b. "Motor and Generator Manufacturing; 2002." 2002 Economic
Census Manufacturing Industry Series. EC02-311-3353 12(RV). Washington, DC: U.S. Bureau of the
Census. Table 1.
The U.S. Economic Census classifies welding equipment under "Welding and
soldering equipment manufacturing" (NAICS 333992). This U.S. industry comprises
establishments primarily engaged in manufacturing welding and soldering equipment and
accessories (except transformers), such as arc, resistance, gas, plasma, laser, electron beam,
and ultrasonic welding equipment; welding electrodes; coated or cored welding wire; and
soldering equipment (except handheld).
As shown in Table 2-2, the variable production costs include materials (including
energy) and labor. Of these categories, materials (including fuel and energy) represent about
50 to 57 percent of the total product value. Within the materials category, the Census did not
report diesel and semidiesel engine costs. Labor expenditures account for approximately 11
percent, and other costs such as capital, transportation, marketing, and markup represent the
remaining 40 percent.
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Table 2-2. Welding and Soldering Equipment Manufacturing: 1997 to 2002 (Sbillion)
Year
2002
2001
2000
1999
1998
1997
Value of
Shipments
$3.8
S3 .9
$4.2
$4.2
$4.3
$4.4
Cost of
Materials
$1.9
$2.1
$2.3
$2.3
$2.3
$2.5
Cost as a
Share of
Product
Value (%)
50%
54%
55%
55%
53%
57%
Labor
$0.4
$0.4
$0.4
$0.4
$0.4
$0.5
Cost as a
Share of
Product
Value (%)
11%
10%
10%
9%
9%
11%
Capital
$0.1
$0.1
$0.1
$0.1
$0.1
$0.1
Cost as a
Share of
Product
Value (%)
3%
3%
2%
2%
2%
2%
Source: U.S. Bureau of the Census. 2004d. "Welding and Soldering Equipment Manufacturing: 2002." 2002
Economic Census Manufacturing Industry Series. EC02-311-333992(RV). Washington, DC: U.S.
Bureau of the Census. Table 1.
2.1.1.2 Pumps and Compressors
The U.S. Economic Census classifies pumps and pumping equipment under "Pump
and pumping equipment manufacturing" (NAICS 333911). This U.S. industry comprises
establishments primarily engaged in manufacturing general purpose pumps and pumping
equipment (except fluid power pumps and motors), such as reciprocating pumps, turbine
pumps, centrifugal pumps, rotary pumps, diaphragm pumps, domestic water system pumps,
oil well and oil field pumps and sump pumps.
As shown in Table 2-3, the variable production costs include materials (including
energy), and labor. Of these categories, materials (including fuel and energy) represent about
half of the total product value. Within the materials category, diesel and semidiesel engines
accounted for approximately 0.5 percent of product value in 2002. Labor expenditures
account for approximately 9 percent, and other costs such as capital, transportation,
marketing, and markup represent the remaining 43 percent.
The U.S. Economic Census classifies compressors under "Air and gas compressor
manufacturing" (NAICS 333912). This U.S. industry comprises establishments primarily
engaged in manufacturing general purpose air and gas compressors, such as reciprocating
compressors, centrifugal compressors, vacuum pumps (except laboratory), and
nonagricultural spraying and dusting compressors and spray gun units.
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Table 2-3. Pumps and Pumping Equipment Manufacturing: 1997 to 2002 (Sbillion)
Year
2002
2001
2000
1999
1998
1997
Value of
Shipments
$7.0
S7.4
S7.6
S7.2
$7.6
S6.7
Cost of
Materials
S3. 4
S3. 6
S3. 7
S3. 5
$4.0
S3. 3
Cost as a
Share of
Product
Value (%)
49%
49%
49%
49%
53%
49%
Labor
SO .6
SO .6
SO .6
SO .6
SO. 7
SO. 7
Cost as a
Share of
Product
Value (%)
9%
8%
8%
8%
9%
10%
Capital
$0.2
SO .2
$0.2
$0.2
$0.2
$0.2
Cost as a
Share of
Product
Value (%)
3%
3%
3%
3%
3%
3%
Source: U.S. Bureau of the Census. 2004c. "Pump and Pumping Equipment Manufacturing: 2002." 2002
Economic Census Manufacturing Industry Series. EC02-311-333911(RV). Washington, DC: U.S.
Bureau of the Census. Table 1.
As shown in Table 2-4, the variable production costs include materials (including
energy), and labor. Of these categories, materials (including fuel and energy) represent 55 to
60 percent of the total product value. Within the materials category, diesel and semidiesel
engines account for approximately 1.8 percent of product value in 2002. Labor expenditures
account for approximately 8 percent, and other costs such as capital, transportation,
marketing, and markup represent the remaining 35 percent.
Table 2-4. Air and Gas Compressor Manufacturing: 1997 to 2002 (Sbillion)
Year
2002
2001
2000
1999
1998
1997
Value of
Shipments
$4.8
$5.6
$6.2
$5.7
$5.7
$5.6
Cost of
Materials
$2.7
$3.0
$3.3
$3.0
$3.1
$3.1
Cost as a
Share of
Product
Value (%)
56%
54%
53%
53%
54%
55%
Labor
$0.4
$0.4
$0.4
$0.4
$0.5
$0.5
Cost as a
Share of
Product
Value (%)
8%
7%
6%
7%
9%
9%
Capital
$0.2
$0.2
$0.2
$0.2
$0.2
$0.2
Cost as a
Share of
Product
Value (%)
4%
4%
3%
4%
4%
4%
Source: U.S. Bureau of the Census. 2004c. "Pump and Pumping Equipment Manufacturing: 2002." 2002
Economic Census Manufacturing Industry Series. EC02-311-333911(RV). Washington, DC: U.S.
Bureau of the Census. Table 1.
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2.1.1.3 Irrigation Systems
The U.S. Economic Census classifies irrigation equipment under "Farm Machinery
and Equipment Manufacturing" (NA1CS 333111). This U.S. industry comprises
establishments primarily engaged in manufacturing agricultural and farm machinery and
equipment, and other turf and grounds care equipment, including planting, harvesting, and
grass mowing equipment (except lawn and garden-type).
As shown in Table 2-5, the variable production costs include materials (including
energy), and labor. Of these categories, materials (including fuel and energy) represent 52 to
57 percent of the total product value. Within the materials category, diesel and semidiesel
engines accounted for approximately 2.2 percent of product value in 2002. Labor
expenditures account for approximately 9 percent, and other costs such as capital,
transportation, marketing, and markup represent the remaining 39 percent.
Table 2-5. Farm Machinery and Equipment Manufacturing: 1997 to 2002 (Sbillion)
Year
2002
2001
2000
1999
1998
1997
Value of
Shipments
$14. 7
$14.1
$13.5
$11.8
$16.5
$16.0
Cost of
Materials
$7.7
$7.6
$7.7
$6.4
$8.5
$8.4
Cost as a
Share of
Product
Value (%)
52%
54%
57%
54%
52%
53%
Labor
$1.3
$1.3
$1.4
$1.3
$1.5
$1.6
Cost as a
Share of
Product
Value (%)
9%
9%
10%
11%
9%
10%
Capital
$0.3
$0.3
$0.3
$0.3
$0.4
$0.5
Cost as a
Share of
Product
Value (%)
2%
2%
2%
3%
2%
3%
Source: U.S. Bureau of the Census. 2004a. "Farm Machinery and Equipment Manufacturing: 2002." 2002
Economic Census Manufacturing Industry Series. EC02-311-333111(RV). Washington, DC: U.S.
Bureau of the Census. Table 1.
2.1.2 Potential Changes in Material Inputs
Under NSPS subject nonemergency stationary CI internal combustion engines must
be certified to meet Tier 4 emission standards for NOX, NMHC, PM, and CO (Parise, 2005a,
2005b). To address emissions of these pollutants, several changes in the manufacturing
design and/or material inputs have been considered. Among those are the following:
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• catalyzed diesel particulate filters (CDPFs): Tier 4 emission standards for engines
greater or equal 25 horsepower (hp) are based on the use of this control
technology. It is estimated CDPFs will reduce PM emissions by more than 90
percent, and also reduce NMHC and CO emissions by a significant amount.
• NOX adsorbers: Tier 4 emission standards for engines greater or equal to 75 hp are
based on the use of this control technology. It is estimated NOX adsorbers will
reduce NOX emissions by 90 percent.
• lower-sulfur fuel: the owners and operators of the subject stationary CI internal
combustion engines will be required to use diesel fuel containing 500 parts per
million (ppm) sulfur or less by October 1, 2007. This requirement will be lowered
to 15 ppm (ultra-low sulfur diesel or ULSD) by October 1, 2010.
2.2 The Demand Side
The demand for diesel equipment is derived from consumer demand for the services
and products the equipment provides. We describe uses and consumers of these products as
well as provide examples of substitution possibilities in consumption. Results of econometric
estimates of elasticities for downstream service and product markets are included as well.
2.2.7 Generators and Welding Equipment
Generator sets provide power for prime, standby, and peaking power industrial,
commercial, and communications facilities. Prime power units typically have lower
horsepower ratings while standby units have higher horsepower ratings. Potential substitutes
including natural gas generation units and a recent industry study suggests over 1/3 of 1,000
hp or higher sets use fuels other than diesel (Rhein Associates, 2002). However,
diesel-engine generators appear to be still preferred in remote/offsite agriculture and
construction uses (EPA, 2004).
EPA's profile of nonroad welding machines found that similar substitution issues
exist for on-site versus remote locations (EPA, 2004). On-site facility welding can be
accomplished with electric (AC or battery-operated) units, an arrangement not possible for
off-site uses. Gas welders provide a third option, one that is not dependent on a local
infrastructure.
In Table 2-6, we use the latest detailed Benchmark Input-Output Data report by the
Bureau of Economic Analysis (U.S. BEA, 2002) to identify industries that use generators and
welding equipment. Note that these data include all types of generators and welding
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Table 2-6. Generator Set and Welding Equipment Use by Industry: 1997
Direct
Commodity IO-CodeDetail_I-O Industry Use Requirements
Code Description Code IO-CodeDetail_I-O Description Value Coefficients"
335312 Motor and generator
manufacturing
333415 AC, refrigeration, and forced air
heating
811300 Commercial machinery repair and
maintenance
333911 Pump and pumping equipment
manufacturing
335312 Motor and generator manufacturing
334119 Other computer peripheral
equipment manufacturing
1,364.2
453.4
451.4
408.7
398.7
6.23%
1.38%
6.97%
3.46%
1.67%
333992 Welding and soldering
equipment
manufacturing
811300
332312
811400
333298
230220
Commercial machinery repair and
maintenance
Fabricated structural metal
manufacturing
Household goods repair and
maintenance
All other industrial machinery
manufacturing
Commercial and institutional
buildings
408.3
170.5
140.9
107.3
61
1.24%
1.13%
0.57%
1.34%
0.03%
Note: The data include generators and welding equipment that is not affected by the proposed NSPS.
'These values show the amount of the commodity required to produce SI.00 of the industry's output.
Source: U.S. Bureau of Economic Analysis. 2002. 1997 Benchmark Input-Output Accounts: Detailed Make
Table, Use Table and Direct Requirements Table. Tables 4 and 5.
equipment and are not restricted to stationary diesel-powered equipment affected by the
NSPS. For all generators and welding and soldering equipment, NAICS 33415 (AC,
refrigeration, and forced air heating) is the largest users of generators, and other industries
that are relatively large demanders include pumping equipment manufacturing, generators
and welders manufacturing, and machinery repair. NAICS 811300 (Commercial machinery
repair and maintenance) is the largest user of welding and soldering equipment; other major
users include fabricated metal manufacturing, household goods repair, and other industrial
machinery manufacturing.
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2.2.2 Stationary Pumps and Compressor Equipment
The construction industry is an important consumer of pump and compressor
equipment; as a result, demand for this equipment fluctuates with construction activity. Oil
field drilling and well servicing applications are primary consumers of high horsepower
equipment such as drills and compressors. Demand in these areas is influenced by changes in
fuel prices and changes in overall economic activity.
In Table 2-7, we use the latest detailed Benchmark Input-Output Data report by the
Bureau of Economic Analysis (U.S. BEA, 2002) to identify industries that use pumps and
compressor equipment. Again, these data include all types of pumps and compressor
equipment and are not restricted to stationary dies el-powered equipment affected by the
NSPS. Nonagricultural demanders of pumps and pumping equipment include railway
transportation, nonfarm single family homes, and semiconductor machinery manufacturing.
Major demanders of compressor equipment include construction of single-family homes and
additions, and manufacturing of compressor equipment, motor vehicle parts, and plastic
products.
2.2.5 Irrigation
Demand for irrigation equipment is driven by farm operators' supply decisions,
optimal replacement considerations, and climate and weather conditions. The National
Agriculture Statistics Service (NASS) 2003 Farm and Ranch Irrigation Survey
(USDA-NASS, 2004) shows the top five states ranked by total acres irrigated are California,
Nebraska, Texas, Arkansas, and Idaho. The survey showed that approximately 500,000
pumps were used on U.S. farms in 2003 with energy expenses totaling $1.5 billion dollars.
Electricity is the dominant form of energy expense for irrigation pumps, accounting for 60
percent of energy expenses. Diesel fuel is second (18 percent), followed by natural gas (18
percent), and other forms of energy (4 percent). The report also notes that 411 pumps were
powered by solar or other renewable energy sources. In 2003, farmers and ranchers spent
approximately $13,000 per farm on irrigation investments.
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Table 2-7. Pumps and Compressor Equipment Use by Industry: 1997
Direct
Commodity IO-CodeDetail_I-O Industry Use Requirement
Code Description code IO-CodeDetail_I-O Description Value s Coefficients
333911 Pump and pumping
equipment manufacturing
333912 Air and gas compressor
manufacturing
482000 Rail transportation 508.4 1.34%
230110 New residential 1-unit structures, 208.1 0.12%
nonfarm
333295 Semiconductor machinery 173.7 1.64%
manufacturing
230210 Manufacturing and industrial 92.6 0.34%
buildings
213111 Drilling oil and gas wells 77.7 0.82%
230110 New residential 1-unit structures, 211.9 0.12%
nonfarm
333912 Air and gas compressor 115.0 2.22%
manufacturing
230130 New residential additions and 56.1 0.10%
alterations, nonfarm
336300 Motor vehicle parts manufacturing 50.0 0.03%
32619A Plastics plumbing fixtures and all 50.0 0.08%
other plastics products
Note: The data includes pumps and compressor equipment that is not affected by the proposed NSPS.
'These values show the amount of the commodity required to produce one dollar of the industry's output.
Source: U.S. Bureau of Economic Analysis. 2002. 1997 Benchmark Input-Output Accounts: Detailed Make
Table, Use Table and Direct Requirements Table. Tables 4 and 5.
2.2.4 Empirical Data Elasticities
Stationary diesel equipment is used in the production of a variety of goods and
services. Economic theory suggests the demand for stationary diesel equipment is strongly
influenced by the elasticity of final demand for the product or service the equipment is used
to produce. EPA's nonroad diesel analysis (EPA, 2004) identified key markets where
stationary diesel equipment was used and econometrically estimated demand elasticities for
these markets. Demand elasticities measure the percent change in quantity demanded in
response to a percent change in price. As shown in Table 2-8, final product/service demand
is inelastic, that is, not very responsive to changes in prices. For example, a one percent
2-9
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Table 2-8. Empirical Demand Elasticity Estimates: Final Product Markets Where
Stationary Diesel Equipment is Used
Stationary Gen Sets
and Welders
Stationary Pumps and
Compressors
Stationary Irrigation
Systems
Demand Characterization
Final Product Market and
Demand Elasticity (if)
Derived demand
Manufacturing
-0.6
Derived demand
Manufacturing
-0.6
Derived demand
Agriculture
-0.2
EPA (2004)
Econometric estimate
(inelastic)
EPA (2004)
Econometric estimate
(inelastic)
EPA (2004)
Econometric estimate
(inelastic)
increase in agricultural prices leads to only a 0.2 percent decline in demand for agricultural
output.
2.3 Industry Organization
To estimate the economic impacts of a regulation, it is important to have an
understanding of industry organization. We discuss key issues in this industry, identify firms
and small businesses participating in the market, and discuss issues related to pricing
behavior in these markets.
2.3.1 Diesel Engines: The Equipment Firm's "Make" or "Buy" Decision
Vertically integrated firms own a combination of "upstream" and "downstream"
production operations; for example, vertically integrated diesel equipment manufactures
make the engines used in equipment rather than buy diesel engines from independent diesel
engine manufacturers. Although there are several reasons firms may choose this structure,
two frequently cited benefits are reducing transaction costs associated with input purchases
and taking advantage of technological economies that arise through integrated production
structures (Viscusi, Vernon, and Harrington, 1992). A review of the Power Systems Research
(PSR) data for 2000 shows that vertical operations are more likely to occur in diesel-powered
generator set and irrigation system industries relative to the other directly affected markets.
Approximately 30 to 40 percent of manufactured diesel engines in these equipment markets
were consumed internally by integrated manufacturers in these applications.
2-10
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2.3.2 Defining the Products that Constitute the Market
To assess market structure, we need a clear definition of the "market(s)" along
geographic and product dimensions. There are two distinctive product characteristics we use
to define the products. First, consumers are more likely to view products with similar
horsepower ratings as close substitutes, so it seems reasonable to delineate the markets by
horsepower categories defined in the engineering cost analysis and by EPA (2004). Second,
after reviewing the EPA industry characterization for the Clean Air Nonroad Diesel Rule
(EPA, 2004), the California Air Resources Board's (CARS' s) Staff Report for the Airborne
Toxic Control Measure for Stationary Compression-Ignition Engines (CARB, 2003), and a
private industry study of the diesel engine markets (Rhein Associates, 2002), we have
identified three broad nonemergency stationary diesel equipment applications where buyers
and sellers would generally be unwilling to shift consumption/production among groups.
These include generator sets and welding equipment, pumps and compressors, and irrigation
systems. Market data associated with these applications are discussed in Section 2.4.
2.5.5 Key Firms Currently Participating in these Markets
EPA identified key firms in each of the markets using market share data from 2000
(PSR, 2004). As discussed below, sales are concentrated among a few top firms identified in
each market (see Table 2-9).
2.3.3.1 Generators and Welders
Sales leaders in the diesel-powered generator set market include two Korean firms
(Korean GenSets and Daewoo Heavy Industries & Machinery Ltd.) and Honda Motor
Company. Large public firms Lincoln Electric and Illinois Tool Works dominate sales of
diesel-powered welding equipment. Hoovers identifies Lincoln Electric as a leading
manufacturer of arc-welding, cutting products, and welding supplies including arc-welding
power sources, automated wire-feeding systems, and consumable electrodes for arc-welding.
Its major competitor is Illinois Tool Works, a diversified company that makes products in the
automotive, construction, paper products, and food and beverage industries (Hoovers, 2005).
2.3.3.2 Pumps and Compressors
Leaders in the pump sector include a small privately owned business, Pacer Pumps,
and a public company, Gorman-Rupp Company. Gorman-Rupp makes pumps used in a
variety of industries, including agriculture and construction work, sewage treatment,
2-11
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Table 2-9. Firm Market Shares by Equipment Market: 2000
Market Share
Pumps
Pacer Pumps 13%
Gorman-rupp Company 11%
Godwin Pumps of America 9%
Air and Gas Compressors
Ingersoll-rand 43%
Atlas Copco ab 17%
SulliarCorp. 13%
Hydraulic Power Units
Hydra-tech Pumps 26%
Griffin Dewatering Corporation 14%
Blountlnc. 14%
Generator Sets
Korean Gen-sets 13%
Daewoo Heavy Ind. 11%
Honda Motor Company Ltd. 11%
Welders
Illinois Tool Works Inc. 43%
Lincoln Electric 55%
Irrigation Sets
Springfield Remanufacturing 28%
Deere & Company 27%
Tradewinds Power Corporation 19%
Source: Power Systems Registry (PSR). 2004. OELink™. .
petroleum refining, agriculture, and fire fighting, as well for HVAC and military applications
(Hoovers, 2005). The top three pump makers accounted for only one-quarter of pump sales
in 2000. Industrial machinery giant Ingersoll-Rand led sales in the air and gas compressor
market in 2000. Atlas Copco AB and Sulliar Corporation (a division of Hamilton Sundstrand
Corporation) are other key players in this market.
2,3,3,3 Irrigation Equipment
Sales leaders in this market include Springfield Remanufacturing, Deere and
Company, and Tradewinds Power Corporation. Deere & Company is one of the two largest
makers of farm equipment (Hoovers, 2005). Tradewinds Power is a small private firm that
makes a range of engines for the power generation industry as well as power units, pump
sets, and transmissions for industrial and irrigation use (Hoovers, 2005). Together, these
2-12
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three companies account for approximately 75 percent of the diesel-powered irrigation
system market in 2000.
2.3.3.4 Diesel Engines
Engine production leaders for these markets include well-known domestic names
Deere and Company, Caterpillar, and Cummins. Kubota Engine America, a subsidiary of
Japanese Kubota Corporation, is another major seller in this market, primarily of small
engines in industrial, agricultural, construction, and power generation equipment. Other
Asian competitors are Korean companies Kukje Machinery Co. Ltd and Daewoo Heavy
Industries & Machinery Ltd. European competitors include German companies Deutz AG
and Motorenfabrik Hatz, which owns North American subsidiary Hatz Diesel of America,
Inc. Small businesses in this industry include Wisconsin Motors (owned by V&L Tools).
Wisconsin Motors produces diesel engines for a small niche market and served as a Small
Entity Representative (SER) during the Small Business Advocacy Review Panel process for
the Clean Air Nonroad Diesel Rule (EPA, 2004, p 11-8).
2.3.4 Description of Small and Large Firms
Small entities include small businesses, small organizations, and small governmental
jurisdictions. For purposes of assessing the impacts of the CINSPS, a small entity is defined
as
• a small business whose parent company has fewer than 1,000 employees (for
NAICS 335312 [Motor and Generator Manufacturing]) or 500 employees (for
NAICS 333911 [Pump and Pumping Equipment Manufacturing], NAICS 333912
[Air and Gas Compressor Manufacturing], and NAICS 333992 [Welding and
Soldering Equipment Manufacturing]).
• a small governmental jurisdiction that is a government of a city, county, town,
school district, or special district with a population of fewer than 50,000.
• a small organization that is any not-for-profit enterprise, which is independently
owned and operated and is not dominant in its field.
To identify sales and employment characteristics of affected parent companies, we
use a company database developed for small business analysis of the Clear Air Nonroad
Diesel Rule (EPA, 2004). Since the rule does not affect all companies included in the
database, the analysis only includes companies that produce the following types of
equipment:
2-13
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• Pumps and compressors (Pump and Pumping Equipment Manufacturing [NAICS
333911] or Air and Gas Compressor Manufacturing [NAICS 333912])
• Welders and generators (Motor and Generator Manufacturing [NAICS 335312] or
Welding and Soldering Equipment Manufacturing [NAICS 333992])
We identified 60 small companies and 44 large companies with sales data. Using the data,
we found 62 companies manufacture products that are included in the Pump and Pumping
Equipment Manufacturing (NAICS 333 911) or Air and Gas Compressor Manufacturing
(NAICS 333912) industries and 30 companies manufacture products included in the Motor
and Generator Manufacturing (NAICS 335312) or Welding and Soldering Equipment
Manufacturing (NAICS 333992) industries. The remaining 12 companies manufacture
equipment in both PSR segments. The average small firm's annual sales are approximately
$30 million compared to nearly $6 billion for large firms. The average small firm employed
100 people while the average large firm employed over 20,000 people.
2.3.5 Pricing Behavior in Equipment Markets
In the Clean Air Nonroad Diesel Rule, EPA argued that the competitive assumption is
"widely accepted economic practice for this type of analysis (see, for example, EPA [2000],
p. 126), especially in cases where existing analysis suggests that mitigating factors limit the
potential for raising price above marginal cost" (EPA, 2004, p. 10-5). The mitigating factors
cited in the nonroad rule include significant levels of domestic and international competition
and significant excess capacity enabling competitors to quickly respond to changes in price.
In addition, there were no indications of barriers to entry or evidence of high levels of
strategic behavior in the price and quantity decisions of the firms. Our review of the
available industry data suggests similar conditions are likely to be present in the markets
included in this analysis.
2.4 Market Data
To perform the economic impact analysis, we compare baseline market conditions for
affected markets with counterfactual conditions produced under a new policy. This
comparison requires developing a dataset for generator sets and welders, pumps and
compressors, and irrigation equipment markets for the year 2015, the baseline year of
analysis. In this section, we describe elements of the dataset and include information on
quantities and prices for these three markets together with historical and projected data.
2-14
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2.4.1 Baseline Quantities
EPA has estimated that there will be approximately 16,000 new stationary
nonemergency Cl engines produced in the United States in 2015. This is 20 percent of the
total population of stationary CI engines (which is 82,000). The other stationary CI engines
are used for emergency applications (such as producing power when electric generation from
the local utility is interrupted, pumping water in case of fire or flood). The majority (10,200,
or 62 percent) of stationary nonemergency CI engines will be used in the generator sets and
welders equipment market, with 32 percent of the engines used in the pumps and
compressors market, and 6 percent used in the irrigation equipment market (see Table 2-10).
Under the assumption that there is one-to-one correspondence between engines and
equipment, it is reasonable to assume that these statistics reflect the equipment population as
well.
Table 2-10. Baseline Quantities for Engines and Equipment: 2015
Stationary Nonemergency
Generator Sets and Welders
51-75 hp
1,066
76-100 hp
1,532
101-175 hp
2,479
>176 hp
5,132
Total
10,210
Stationary Nonemergency
Pumps and Compressors
51-75 hp
693
76-100 hp
1,343
101-175 hp
1,111
>176hp
2,011
Total
5,158
Stationary Nonemergency
Irrigation Systems
50-100 hp
272
101-600 hp
707
Total
979
Grand Total
16,347
Source: Sorrels, Larry, EPA, e-mail to Ruth Mead, ERG and Katherine Heller and Brooks Depro, RTI
International. CI engine population by NAICS. April 20, 2005.
2.4.2 Baselin e Prices
For the Clean Air Nonroad Diesel Rule, EPA collected price data for the nonroad
diesel equipment from a variety of sources, including the U.S. General Services
Administration and various Web sites. A relationship between price and horsepower was
obtained using a linear regression technique (see Guerra [2005], p. 2). Using these linear
equations and median horsepower for each market, we estimated national prices for
stationary nonemergency CI equipment. As shown in Table 2-11, estimates range from
2-15
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$7,200 to $86,200 and vary among applications. In each horsepower category, prices for
small horsepower pumps and compressors and irrigation systems are typically higher than
those for generator sets and welders.
2.4.3 Historical Data
Despite significant declines in 2000 sales, generator sets and welding markets grew at
an average annual rate of 9 percent between 1990 and 2000. As shown in Table 2-12, this
growth was led by low horsepower equipment (less than 100 hp). Irrigation equipment
showed similar strong growth rates during the period (7 percent), followed by pumps and
compressors.
Table 2-11. Baseline Equipment Prices: 2015
Stationary Nonemergency Stationary Nonemergency Pumps Stationary Nonemergency
Generator Sets and Welders and Compressors Irrigation Systems
51-75 hp
$7,231
76-100 hp
$10,101
101-175 hp
$15,840
>176 hp
$44,535
51-75 hp
$13,960
76-100 hp
$19,499
101-175 hp
$30,578
>176 hp
$86,192
50-100 hp
$42,247
101-600 hp
$75,815
Note: Calculated computed using Guerra (2005) and midpoint value of horsepower range.
2-16
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Table 2-12. Historical Unit Sales Data by Market: 1990-2000
Stationary
50-75
76-100
101-175
>176
Total
Stationary
50-75
76-100
101-175
>176
Total
Stationary
50-100
101-600
Total
2000
1999
1998
Nonemergency Generator
762
993
1,773
2,926
6,454
1,637
1,355
2,179
2,591
7,762
658
525
1,247
2,588
5,019
1997
Sets and
466
434
1,081
2,093
4,074
1996
Welders
279
315
886
1,485
2,965
1995
361
342
1,122
1,792
3,617
1994
303
289
1,137
1,708
3,437
1993
282
238
1,133
1,607
3,260
1992
336
206
928
1,522
2,991
1991
354
249
934
1,577
3,114
1990
304
164
774
1,415
2,656
Nonemergency Pumps and Compressors
289
494
427
993
2,203
357
460
459
939
2,216
Nonemergency
81
663
744
72
620
692
354
421
508
875
2,158
Irrigation
62
584
646
334
384
533
784
2,036
Systems
65
528
592
285
326
590
823
2,024
75
511
585
285
321
604
809
2,017
72
477
549
254
289
517
658
1,718
60
460
521
203
260
456
566
1,485
57
410
468
204
228
436
487
1,355
65
360
425
254
258
531
606
1,649
70
328
399
297
266
504
712
1,780
63
293
356
Source: Sorrels, Larry, EPA, e-mail to Ruth Mead, ERG and Katherine Heller and Brooks Depro, RTI
International. CI engine population by NAICS. April 20, 2005.
2,4,4 Projections
Using 10-year growth data for engines (Sorrels, 2005), the Agency estimated that
stationary nonemergency CI engine markets will continue to grow at historical rates (see
Table 2-13). The total affected population is estimated to grow from 11,700 to 16,300
engines between 2005 and 2015.
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Table 2-13. Projected Annual Unit Sales for Nonemergency CI Engines: Selected Years
Hp Range
50-75
75-100
100-175
175-300
300-600
600-750
750-1,200
1,200-3,000
Over 3, 000
Total
2005
1,314
2,068
3,148
3,029
1,203
172
391
382
32
11,738
2010
1,551
2,593
3,701
3,710
1,368
189
453
446
32
14,042
2015
1,788
3,119
4,255
4,391
1,532
205
515
510
32
16,347
Source: Sorrels, Larry, EPA, e-mail to Ruth Mead, ERG and Katherine Heller and Brooks Depro, RTI
International. CINSPS Cost Impacts 05-26-05. June 1,2005.
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SECTION 3
REGULATORY PROGRAM COST ESTIMATES
Under NSPS subject nonemergency stationary CI internal combustion engines must
be certified to meet Tier 4 emission standards for NOX, NMHC, PM, and CO (Parise, 2005a,
2005b). To address emissions of these pollutants, several changes in the manufacturing
design and/or material inputs have been considered. Among those are the following:
• CDPFs: Tier 4 emission standards for engines greater than or equal to 25 hp are
based on the use of this control technology. It is estimated CDPFs will reduce PM
emissions by more than 90 percent and also reduce NMHC and CO emissions by
a significant amount.
• NOX adsorbers: Tier 4 emission standards for engines greater or equal to 75 hp are
based on the use of this control technology. It is estimated NOX adsorbers will
reduce NOX emissions by 90 percent.
The total estimated costs of the proposed NSPS for stationary CI engines are
presented in Table 3-1. The capital cost of control of the NSPS is estimated to be $67 million
in 2015, the model year for which stationary CI internal combustion engines would have to
meet final Tier 4 emission standards. The annualized cost of control of the NSPS is estimated
to be $36 million in 2015. The total annualized cost including accumulated reporting costs in
2015 is estimated to be $57.1 million.
Table 3-1. Summary of Total Costs Associated with the NSPS
Total Costs (Smillion)
Type of Cost
Capital control cost
Annual control cost
Reporting
Total annualized cost
2011
31.0
4.4
10.2
15.4
2012
40.1
10.4
12.5
23.8
2013
42.4
16.8
15.0
32.7
2014
62.7
26.1
17.5
44.5
2015
66.8
36.1
20.2
57.1
2016
68.6
46.3
23.0
70.1
2017
70.3
56.8
25.6
83.4
3-1
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SECTION 4
ECONOMIC IMPACT ANALYSIS: METHODS AND RESULTS
The EIA uses a combination of theory and simulation modeling to evaluate potential
behavior changes associated with a new regulatory program. The goal is to estimate the
impact of the regulatory program on producers and consumers. For this analysis, we chose to
use a partial equilibrium (PE) modeling approach for the affected markets for two reasons.
First, although these commodities maybe an intermediate good used in the market, price
changes that will occur in these markets will be small enough that production and
consumption choices in related markets will be approximately unaffected. Similarly, changes
in household income that could affect the demand for other products and services are
expected to be small enough that they are not explicitly modeled.1 In addition, an
intermediate run approach is used in this EIA because it is likely that producers have
flexibility to adjust selected factors of production but some of the factors (e.g., capital) still
remain fixed. This lack of resource mobility captures potential transitory impacts on
producers during the analysis period.
4.1 Analytical Approach
The CI NSPS and Clean Air Nonroad Diesel rule affect similar markets, so their
impacts can be modeled in similar ways. Both rules increase the costs of manufacturing
engines, the demand for which derives from the demand for the equipment in which the
engines will be used. However, size and other differences between the rules led to the
development of a separate model for the CI NSPS analysis. For example, the Nonroad Diesel
Economic Impact Model (NDEIM) models derive the demand for equipment and engines
from those "final" application markets; in the CI NSPS EPA simplified this approach and
only models diesel equipment markets that use affected engines in their production process.
EPA characterizes the response of equipment demand to changes in equipment prices with an
Mas-Colell et al. (1995) and Vives (1987) provide a technical discussion of these issues.
4-1
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elasticity parameter.2 We discuss and compare NDEIM's characterization of equipment
demand responses and the CI NSPS method below.
NDEIM' s relationships explicitly link the demand for engines and equipment to the
market behavior in an "application" market. A demand curve specified in terms of its
downstream consumption is referred to as a derived demand curve (see Figure 4-1 for a
graphical illustration of how a derived demand curve is identified). Consider an event in the
equipment market that causes the price of equipment to increase by AP (such as an increase
in the price of engines). This increase in the price of equipment will cause the supply curve
in the application market to shift, leading to a decreased quantity of activity (AQC). The
change in activity leads to a decrease in the quantity demanded for equipment (AQE). The
new point (QE - AQE, P + AP) traces out the derived demand curve. The supply and demand
function in the application market are needed to identify the derived demand in the
construction equipment market.
An alternative approach to identifying the demand response is to derive an expression
for the derived demand elasticity parameter using economic theory. Economist Alfred
Marshall identified four factors that influence an industry's price elasticity of demand for a
factor (Hicks, 1963; Layard and Walters, 1978). We restate these "rules" in terms of the
industry elasticity of demand for equipment (£1E) and the two factor production functions
(equipment and labor). The (absolute) elasticity of demand for equipment in industry varies
directly with
• the (absolute) elasticity of demand for the product or service the industry
produces (r)D),
• the cost share of equipment (VE) in production,
• the elasticity of supply of other factors (i.e., labor) (rjs), and
• the elasticity of substitution between equipment and other factors (OEL).
By doing this, we implicitly assume engine manufacturers fully pass on the control costs up the supply chain to
the equipment market. The elasticity parameters and results of the numerical simulations in the nonroad
economic impact analysis support the use of this simplification.
4-2
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Unit Price of
Construction
l l
1 1
1 1
1 1
AQC
UC
Construction
Output
Price Equip merit
AP
t
AQr
Derived
Demand
Equipment
Output
APrice
Equipment
Upward Shift
Construction
Supply Curve
AQr
AQF
Figure 4-1. Derived Demand for Equipment from the Construction Industry
4-3
-------
It can be shown that if the production function exhibits constant returns to scale with
fixed factor proportions technology (i.e., OEL = O)3, price elasticity of demand for equipment
can be expressed as a function of the selected variables included in Marshall's rules (Hicks,
1963; Layard and Walters, 1978):
D
-(l-V ix—=-
This expression can be further simplified by assuming the supply of other factors is
perfectly elastic (rjs = °°). This simplification is appropriate because we expect the changes in
production in the equipment market to be small enough that they do not influence prices in
other factor markets:
5iE = vExnD. (4.2)
Therefore, we can estimate this behavioral parameter with cost share data and final
product/service demand elasticities.
4.2 Diesel Equipment Markets Affected by the CI NSPS
EPA identified three national competitive markets for the economic impact
analysis—an approach consistent with the geographic definition and pricing behavior
assumptions for nonroad diesel equipment markets within NDEIM. In selecting the
competitive model, EPA argued that the competitive assumption is "widely accepted
economic practice for this type of analysis (see, for example, EPA [2000], p. 126), especially
in cases where existing analysis suggests that mitigating factors limit the potential for raising
price above marginal cost" (EPA, 2004, p. 10-5). The mitigating factors cited in the nonroad
rule include significant levels of domestic and international competition and significant
excess capacity enabling competitors to quickly respond to changes in price. In addition,
there were no indications of barriers to entry or evidence of high levels of strategic behavior
in the price and quantity decisions of the firms. Our preliminary review of the available
The fixed proportions technology assumption is reasonable for this industry. For interested readers, the
expression for the more complicated formula that includes the elasticity of substitution is included in J.R.
Hicks' Theory of Wages, pp. 243-244. A similar expression is reported in Layard and Walters (1978,
p. 267).
4-4
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industry data and literature suggests similar conditions are likely to be present in the markets
included in this analysis.
We used two distinctive product characteristics to define the products that constitute
the markets. First, consumers are more likely to view products with similar horsepower
ratings as close substitutes, so it seems reasonable to delineate the markets by horsepower
categories defined in the engineering cost analysis and by EPA (2004). Second, after
reviewing the EPA industry characterization for the Clean Air Nonroad Diesel Rule (EPA,
2004), the California Air Resources Board' s (CARB1 s) Staff Report for the Airborne Toxic
Control Measure for Stationary Compression-Ignition Engines (CARB, 2003), and a private
industry study of the diesel engine markets (Rhein Associates, 2002), EPA identified three
broad nonemergency stationary diesel markets where buyers and sellers in the market would
be unwilling to shift consumption/production among these products on a large scale.
To characterize behavioral responses in these three markets, EPA uses existing model
elasticity parameters available fromNDElM model. The U.S. Bureau of Economic Analysis
(2002) and U.S. Department of Agriculture (2004) provide data that allow us to approximate
associated cost shares in final application markets. Table 4-1 provides the baseline data set
for the economic impact analysis, and Section 4.3 describes the partial equilibrium model
equations used for the economic impact analysis.
4.3 Overview of Partial Equilibrium Model
We illustrate our approach for estimating market-level impacts using a numerical
simulation model. Our method involves specifying a set of nonlinear supply and demand
relationships for the three diesel equipment markets identified in Table 4-1, simplifying the
equations by transforming them into a set of linear equations, and then solving the
equilibrium system of equations (see, for example, Fullerton and Metcalfe [2002]).
4. 3. 1 Market Supply
First, we consider the formal definition of the elasticity of supply with respect to
changes in own price:
_ _ (43)
' dp!P
4-5
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Table 4-1. Markets Included in Economic Impact Model
Stationary Gen Sets
and Welders
Stationary Pumps and
Compressors
Stationary Irrigation
Systems
Power Systems Research
(PSR) application
descriptions
Generator sets, welders
Air compressors, gas
compressors, hydro
power units, pressure
washers, pumps
Irrigation systems
Geographic scope
Product groupings
Firm behavior
Baseline engine population
Baseline year
Supply elasticity
Demand characterization
Final product market and
demand elasticity (r|D)
Cost share (v0)
Estimated derived demand
National
4 horsepower
categories
Perfect competition
See Table 4-2a
2015
2.9
EPA (2004)
Derived demand
Manufacturing
-0.6
EPA (2004)
Econometric estimate
(inelastic)
7%
-0.042
National
5 horsepower
categories
Perfect competition
See Table 4-2b
2015
2.8
EPA (2004)
Derived demand
Manufacturing
-0.6
EPA (2004)
Econometric estimate
(inelastic)
1 %
-0.006
National
2 horsepower
categories
Perfect competition
See Table 4-2c
2015
2.1
EPA (2004)
Derived demand
Agriculture
-0.2
EPA (2004)
Econometric estimate
(inelastic)
2%
-0.004
elasticity (S,m
4-6
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Table 4-2a. Baseline Data: Nonemergency Stationary Diesel Generator Sets and
Welders, 2015
Application
Quantity (units)
Price ($/unit)
51-75 hp
1,066
$7,231
76-100 hp
1,532
$10,101
101-175 hp
2,479
$15,840
>176 hp
5,132
$44,535
Sources: U.S. Environmental Protection Agency. 2004. Final Regulatory Analysis: Control of Emissions from
Nonroad Diesel Engines. EPA 420-R-04-007. Available from
.
Sorrels, Larry, EPA, e-mail to Ruth Mead, ERG and Katherine Heller and Brooks Depro, RTI
International. CI engine population by NAICS. April 20, 2005.
Table 4-2b. Baseline Data: Nonemergency Stationary Diesel Pumps and Compressors,
2015
Application
Quantity (units)
Price ($/unit)
51-75 hp
693
$13,960
76-100 hp
1,343
$19,499
101-175 hp
1,111
$30,578
>176 hp
2,011
$86,192
Sources: U.S. Environmental Protection Agency. 2004. Final Regulatory Analysis: Control of Emissions from
Nonroad Diesel Engines. EPA 420-R-04-007. Available from
.
Sorrels, Larry, EPA, e-mail to Ruth Mead, ERG and Katherine Heller and Brooks Depro, RTI
International. CI engine population by NAICS. April 20, 2005.
Table 4-2c. Baseline Data: Nonemergency Stationary Diesel Irrigation Systems, 2015
Market Variable 50-100 hp 101-600 hp
Quantity (units) 272 707
Price ($/unit) $42,247 $75,815
Sources: U.S. Environmental Protection Agency. 2004. Final Regulatory Analysis: Control of Emissions from
Nonroad Diesel Engines. EPA 420-R-04-007. Available from
.
Sorrels, Larry, EPA, e-mail to Ruth Mead, ERG and Katherine Heller and Brooks Depro, RTI
International. CI engine population by NAICS. April 20, 2005.
4-7
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Next, we can use "hat" notation to transform Eq. (4.3) to proportional changes and rearrange
terms:
Qs = 8SP (4-4)
where
Q — percentage change in the quantity of market supply,
0S = market elasticity of supply, and
p = percentage change in market price.
By using this approach, we have taken the elasticity definition and turned it into a linear
behavioral equation that characterizes market supply in the three diesel equipment markets.
To introduce the cost of controls associated with the reguktory program, we assume the per-
unit cost (c) leads to a proportional shift in the marginal cost of production. Under the
assumption of perfect competition (price equals marginal cost), we can approximate this shift
at the initial equilibrium point as follows:
MC =
c
Po
(4.5)
4.3.2 Market Dem and
We can specify a demand equation for each diesel engine equipment market as
follows:
where
Q* =
= percentage change in the quantity of market demand,
= market elasticity of demand, and
— percentage change in market price.
(4.6)
4-8
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4.3.3 Equilibrium Solution
Lastly, we specify the market equilibrium conditions in three diesel equipment
markets. In response to the exogenous increase in production costs, the new equilibrium
satisfies the condition that the change in supply equals the change in demand:
(4.7)
We now have three linear equations in three unknowns (p , Q,, and Q ), and we can solve
for the proportional price change in terms of the elasticity parameters (ss and rjd) and the
proportional change in marginal cost:
? = -r^—'MC- (4-8)
?m
Given this solution, we can solve for the proportional change in market quantity using the
demand equation.
4.4 Results
The model projects the NSPS standard will increase prices from 2 to 9.4 percent (see
Table 4-3). Generator set and welding equipment markets experience the highest relative
change in baseline price (9.4 percent). Domestic production declines by small amounts (less
than 0.5 percent) because the (absolute) elasticity of demand for the final product or service
that uses affected equipment and the cost share of equipment in production of these goods
and services is small.
The national compliance cost estimates are often used to approximate the social cost
of the rule. The engineering analysis estimated annualized costs of $57.1 million. In cases
where the engineering costs of compliance are used to estimate social cost, the burden of the
regulation is typically measured as falling solely on the affected producers, who experience a
profit loss exactly equal to these cost estimates. Thus, the entire loss is a change in producer
surplus with no change (by assumption) in consumer surplus, because no change in market
price is estimated. This is typically referred to as a "full-cost absorption" scenario in which
all factors of production are assumed to be fixed and firms are unable to adjust their output
levels when faced with additional costs.
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Table 4-3. Summary of Economic Impacts: 2015
Market-Level Impacts
Generator Sets and Welders
Pumps and Compressors
Irrigation Systems
Change in Consumer Surplus
Change in Producer Surplus
Recordkeeping costs not addressed in market model
Change in Total Surplus
% Change in
9.4%
3.7%
2.0%
-S37.629
-$0.436
-$19.009
-$57.074
Price % Change in Quantity
-0.40%
-0.02%
-0.01%
Welfare Impacts
In contrast, EPA's economic analysis builds on the engineering cost analysis and
incorporates economic theory related to producer and consumer behavior to estimate changes
in market conditions. Owners of affected plants are economic agents that can make
adjustments, such as changing production rates or altering input mixes, that will generally
affect the market environment in which they operate. As producers change their production
levels in response to a regulation, consumers are typically faced with changes in prices that
cause them to alter the quantity that they are willing to purchase. These changes in price and
output from the market-level impacts are used to estimate the total surplus losses/gains for
two types of stakeholders: chemical consumers and owners of chemical plants.
The numerical simulation suggests the changes in price and quantity are relatively
small; thus, the economic approach and engineering cost approach yield approximately the
same estimate of the total change in surplus ($57.1 million). However, the advantage of the
economic approach is that it illustrates how the costs flow through the economic system and
identifies transitory impacts on stakeholders. As shown in Table 4-3, equipment consumers
unambiguously see reductions in surplus as the result of higher prices and reduced
consumption ($37.6 million). The monitoring, recordkeeping, recording, and reporting costs
in 2015 total $20.2 million. They include $2.06 million for prime engines (included in the
model) and $19.009 million for initial notification ($5,768), certification ($845,000), and
recording hours of nonemergency operation of emergency engines ($18.158 million). The
$19.0 million in costs are largely borne by emergency engine operators and thus are not
included in the model; instead, they are entered as a line item in the calculation of social
costs of the proposed rule (see Table 4-3).
4-10
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Table 4-4 presents detailed economic impact estimates for generator and welder
equipment. Prices are projected to increase from 6.3 percent to 10.3 percent across the
horsepower ranges, and quantities sold are projected to decline by less than 0.5 percent. For
this segment of the industry, purchasers of the generator and welder equipment are projected
to incur three-quarters of the social costs ($28.9 million), while producers of the generator
and welder equipment are projected to lose less than $0.5 million.
Table 4-4. Detailed Results for Generator and Welder Equipment: 2015
HP Range
51-75 hp
76-1 00 hp
101-175hp
>176hp
Market-Level
% Change in Price %
6.3%
9.4%
8.9%
10.3%
Impacts
Change in Quantity
-0.27%
-0.40%
-0.37%
-0.43%
Welfare Impacts
Change in Consumer Surplus
Change in Producer Surplus
Change in Total Surplus
-$28.949
-S0.417
-$29.366
Table 4-5 presents detailed economic impact estimates for pump and compressor
equipment. Prices are projected to increase from 2.4 percent to 4.9 percent across the
horsepower ranges, and quantities sold are projected to decline by less than 0.03 percent. For
this segment of the industry, purchasers of the pump and compressor equipment are
projected to incur the majority of the social costs ($7.4 million), while producers of the pump
and compressor equipment are projected to lose $0.02 million.
Table 4-6 presents detailed economic impact estimates for irrigation equipment.
Prices are projected to increase from 2.0 percent to 2.2 percent across the horsepower ranges,
and quantities sold are projected to decline by 0.01 percent. Like the other two segments of
the industry, purchasers of the irrigation equipment are projected to incur the majority of the
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Table 4-5. Detailed Results for Pump and Compressor Equipment: 2015
HP Range
51-75 hp
76-100 hp
101-175hp
>176hp
Market-Level
% Change in Price %
3.3%
4.9%
4.7%
2.4%
Impacts
Change in Quantity
-0.02%
-0.03%
-0.03%
-0.01%
Welfare Impacts
Change in Consumer Surplus
Change in Producer Surplus
Change in Total Surplus
-S7.376
-SO.016
-S7.391
Table 4-6. Detailed Results for Irrigation Equipment: 2015
Market-Level Impacts
HP Range
% Change in Price % Change in Quantity
51-100 hp
101-600 hp
2.2%
2.0%
-0.01%
-0.01%
Welfare Impacts
Change in Consumer Surplus
Change in Producer Surplus
Change in Total Surplus
$ (1.305)
$ (0.002)
$ (1.307)
social costs ($1.3 million), while producers of the irrigation equipment are projected to lose
less than $0.01 million.
The NSPS proposes to reduce emissions of SO2 by requiring the use of lower-sulfur
fuel. In the baseline year of analysis (2015), new stationary CI equipment subject to the
NSPS will be required to use ULSD fuel (i.e., must consume fuel meeting a 15 ppm sulfur
standard). In the absence of regulation, these engines might still have been using high-sulfur
fuel. As a result of regulation, demand for ULSD fuel will increase and demand for high-
sulfur No. 2 distillate will decline relative to an unregulated baseline. Estimated demand for
4-12
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low-sulfur diesel fuel in 2015 is 63.2 billion gallons. This number includes demand for diesel
fuels used in highway, nonroad, locomotive, and marine categories (see Table 4-7).
Estimated prime engine fuel demand in 2015 is 1.73 billion gallons; therefore, the expected
increase in demand for low-sulfur diesel fuel equals 2.74 percent. On the other hand,
decrease in demand for high-sulfur diesel fuel will be a substantial share of the remaining
production of high-sulfur diesel fuel Estimated 2015 high-sulfur fuel production is 7.538
billion gallons, and the ratio of prime engine fuel demand to high-sulfur fuel supply equals
22.94 percent (see Table 4-7).
Table 4-7. Shift of Diesel Fuel Supply and Demand Quantities in 2015 (billion gallons)
Fuel Use Category
Highway
Nonroad
Locomotive
Marine
Heating oil
Total
Estimated stationary prime-engine fuel
demand1"
Ratio
Estimated Demand for
Low-Sulfur Diesel Fuel*
47.58
10.34
3.13
2.16
—
63.21
1.73
2.74%
Estimated Supply for High-
Sulfur Diesel Fuel*
—
—
—
—
7.54
7.54
1.73
22.94%
'From Table 7.1.4-13, p7-61, Final Reg Supp Doc.
bE-mail from Larry Sorrels to ERG and RTI, "Analysis of availability of ultra low sulfur diesel." June 7, 2005.
4-13
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SECTION 5
SMALL BUSINESS IMPACT ANALYSIS
This regulatory action will potentially affect the economic welfare of owners of
facilities that manufacture miscellaneous organic chemicals. The ownership of these facilities
ultimately is in the hands of private individuals who may be owners/operators that directly
conduct the business of the firm (i.e., single proprietorships or partnerships) or, more
commonly, investors or stockholders that employ others to conduct the business of the firm
on their behalf (i.e., privately held or publicly traded corporations). The individuals or agents
that manage these facilities have the capacity to conduct business transactions and make
business decisions that affect the facility. The legal and financial responsibility for
compliance with a regulatory action ultimately rests with these agents; however, the owners
must bear the financial consequences of the decisions. Environmental regulations like this
rule potentially affect all businesses, large and small, but small businesses may have special
problems in complying with such regulations, because they may have less specialized
environmental expertise or limited access to capital for investing in compliance equipment.
The Regulatory Flexibility Act (RFA) of 1980 requires that special consideration be
given to small entities affected by federal regulation. The RFA was amended in 1996 by the
Small Business Regulatory Enforcement Fairness Act (SBREFA) to strengthen the RFA's
analytical and procedural requirements. Prior to enactment of SBREFA, EPA exceeded the
requirements of the RFA by requiring the preparation of a regulatory flexibility analysis for
every rule that would have any impact, no matter how minor, on any number, no matter how
few, of small entities. Under SBREFA, however, the Agency decided to implement the RFA
as written and that a regulatory flexibility analysis will be required only for rules that will
have a significant impact on a substantial number of small entities (SISNOSE). In practical
terms, the amount of analysis of small entities' impacts has not changed, for SBREFA
required EPA to increase involvement of small entity stakeholders in the rulemaking process.
Thus, the Agency has made additional efforts to consider small entity impacts as part of the
rulemaking process.
5-1
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5.1 Description of Small Entities Affected
Small entities include small businesses, small organizations, and small governmental
jurisdictions. For purposes of assessing the impacts of the CI NSPS, a small entity is defined
as
• a small business whose parent company has fewer than 1,000 employees (for
NAICS 335312 [Motor and Generator Manufacturing]) or 500 employees (for
NAICS 333911 [Pump and Pumping Equipment Manufacturing], NAICS 333912
[Air and Gas Compressor Manufacturing], and NAICS 333992 [Welding and
Soldering Equipment Manufacturing]);
• a small governmental jurisdiction that is a government of a city, county, town,
school district, or special district with a population of fewer than 50,000; and
• a small organization that is any not-for-profit enterprise, which is independently
owned and operated and is not dominant in its field.
5.2 Small Business Screening Analysis
In the next step of the analysis, we assessed how the regulatory program may
influence the profitability of ultimate parent companies by comparing pollution control costs
to total sales. To do this, we divided an ultimate parent company's total annual compliance
cost by its reported revenue (see the following equation):
£ (5J)
LTACC
where
CSR = cost-to-sales ratio,
TACC = total annualized compliance costs,
i = indexes the number of affected plants owned by company j,
n = number of affected plants, and
TRj = total revenue from all operations of ultimate parent company j.
This method assumes the affected a company cannot shift pollution control costs to
consumers (in the form of higher market prices). Instead, the company experiences a one-for-
one reduction in profits.
5-2
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To identify sales and employment characteristics of affected parent companies, we
used a company database developed for small business analysis of the Clear Air Nonroad
Diesel Rule (EPA, 2004). Since the rule does not affect all companies included in the
database, the analysis only includes companies that produced the following types of
equipment segments:
• pumps and compressors (Pump and Pumping Equipment Manufacturing [NAICS
333911 ] or Air and Gas Compressor Manufacturing [NAICS 333912]) and
• welders and generators (Motor and Generator Manufacturing [NAICS 335312] or
Welding and Soldering Equipment Manufacturing [NAICS 333992]).
The statistics included in the database come from PSR and other publicly available resources
such as the following:
• Business & Company Resource Center. A single database for company profiles,
company brand information, rankings, investment reports, company histories,
chronologies, full-text articles, investment reports, industry overviews, and
financial and trade association data. http://www.gale.com/servlet/Item
DetailServlet?region=9&imprint=000&titleCode=GAL49&type=l &id=l 15085.
• Hoover's Online. This electronic database is an excellent source of information
on U.S. public and private companies. Users can search for companies byname,
ticker symbol, or keyword. It provides corporate ownership, sales, net income,
and employment. Links are also provided to the company s Web site and those of
top competitors (if available), SEC filings in EDGAR Online, investor research
reports, and news and commentary, http://www.hoovers.com/.
• ReferenceUSA. The ReferenceUSA database contains, in module format, detailed
information on more than 12 million U.S. businesses. Information is compiled
from the following public sources: more than 5,600 Yellow Page and Business
White Page telephone directories; annual reports, 10-Ks, and other Securities and
Exchange Commission (SEC) information; Continuing Medical Education (CME)
directories; federal, state, provincial, and municipal government data; Chamber of
Commerce information; leading business magazines, trade publications,
newsletters, major newspapers, industry and specialty directories; and postal
service information, including both U.S. and Canadian National Change of
Address updates. One disadvantage of this database is that it only reports sales
and employment ranges. For this analysis, we developed a point estimate for these
values (typically the median), http://www.referenceusa.com/.
5-3
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• Dun & Bmdstreet's Million Dollar Directory. The D&B Million Dollar
Directory provides information on over 1,260,000 U.S. leading public and private
businesses. Company information includes industry information with up to 24
individual eight-digit Standard Industrial Classification (SIC) codes, size criteria
(employees and annual sales), type of ownership, and principal executives and
biographies, http://www.dnb.com/ dbproducts/ description/
0,2867,2-223-1012-0-223-142-177-l,OO.htmL
We identified 60 small companies and 44 large companies with sales data. Using the
data, we found 62 companies manufacture products that are included in the Pump and
Pumping Equipment Manufacturing (NAICS 333911) or Air and Gas Compressor
Manufacturing (NAICS 333912) industries, and 30 companies manufacture products
included in the Motor and Generator Manufacturing (NAICS 335312) or Welding and
Soldering Equipment Manufacturing (NAICS 333992) industries. The remaining 12
companies manufacture equipment in both PSR segments.
The results of the screening analysis, presented in Table 5-1, show that two small
firms have estimated CSRs between 1 percent and 3 percent of sales and one firm has a CSR
greater than 3 percent. The remaining 57 small firms have estimated CSRs below 1 percent.
The average (median) CSR for small firms is 0.3 percent (0.1 percent), and the average and
median CSR for all large firms with data is less than 0.02 percent (0.003 percent).
Table 5-1. Summary Statistics for SBREFA Screening Analysis
Companies with Parent Sales Data
Compliance costs are < 1% of sales
Compliance costs are > 1 to 3% of sales
Compliance costs are > 3% of sales
Cost-to-Sales Ratios (%)
Average
Median
Maximum
Minimum
Small
Number Share (%)
60 100%
57 95%
2 3%
1 2%
0.3%
0.1%
4.7%
0.0%
Large
Number
44
44
—
—
0.0192%
0.0025%
0.2%
0.0%
Share (%)
100%
100%
0%
0%
5.3 Assessment
The RFA generally requires an agency to prepare a regulatory flexibility analysis of any
rule subject to notice and comment rulemaking requirements under the Administrative
5-4
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Procedure Act or any other statute unless the agency certifies that the rule will not have a
significant economic impact on a substantial number of small entities. Small entities include
small businesses, small organizations, and small governmental jurisdictions. The economic
impacts of the proposed NSPS are expected to be insignificant, and the Agency has
determined that there is no significant impact (economic) on a substantial number of small
entities (or SISNOSE).
5-5
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REFERENCES
California Air Resources Board (CARB). 2003. Staff Report: Initial Statement of Reasons for
Proposed Rulemaking Airborne Toxic Control Measure for Stationary
Compression-Ignition Engines. Available from . Last updated November 16, 2004.
Fullerton, D, and G. Metcalf. March 2002. "Tax Incidence." NBER Working Paper 8829.
. Obtained in November 2004.
Guerra, Z., Office of Transportation and Technology, U.S. Environmental Protection
Agency. 2005. Memorandum: "Price Database for New Non-Road Equipment."
Hicks, J.R. 1963. The Theory of Wages. 2nd Ed. New York: St. Martin's Press.
Hoover's Online. 2005. Available from.
Layard, P., and A. Walters. 1978. Microeconomic Theory. New York: McGraw-Hill.
Mas-Colell, A., M. Whinston, and J. Green. 1995. Microeconomic Theory. New York:
Oxford University Press.
Parise, T., Alpha-Gamma Technologies, Inc. 2005a. Memorandum: "Cost Impacts
Associated with NSPS for Stationary CI ICE."
Parise, T., Alpha-Gamma Technologies, Inc. 2005b. Memorandum: "Emission Reduction
Associated with NSPS for Stationary CI ICE."
Power Systems Registry (PSR). 2004. OELink™. .
Rhein Associates. 2002. The Future of Diesel Engines, Fifth Edition. Rhein Associates:
Canton, MI.
Sorrels, Larry, EPA, e-mail to Ruth Mead, ERG and Katherine Heller and Brooks Depro,
RTI International. CI engine population by NAICS. April 20, 2005.
U.S. Bureau of Economic Analysis. 2002. 1997 Benchmark Input-Output Accounts: Detailed
Make Table, Use Table and Direct Requirements Table. Tables 4 and 5.
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-------
U.S. Bureau of the Census. 2004a. "Farm Machinery and Equipment Manufacturing: 2002."
2002 Economic Census Manufacturing Industry Series. EC02-311-333111(RV).
Washington, DC: U.S. Bureau of the Census. Table 1.
U.S. Bureau of the Census. 2004b. "Motor and Generator Manufacturing: 2002." 2002
Economic Census Manufacturing Industry Series. EC02-311-335312(RV).
Washington, DC: U.S. Bureau of the Census. Table 1.
U.S. Bureau of the Census. 2004c. "Pump and Pumping Equipment Manufacturing: 2002."
2002 Economic Census Manufacturing Industry Series. EC02-311-333911(RV).
Washington, DC: U.S. Bureau of the Census. Table 1.
U.S. Bureau of the Census. 2004d. "Welding and Soldering Equipment Manufacturing:
2002." 2002 Economic Census Manufacturing Industry Series. EC02-311-
333992(RV). Washington, DC: U.S. Bureau of the Census. Table 1.
U.S. Department of Agriculture, National Agricultural Statistics Service. 2004. "Farm
Production Expenditures 2003 Summary." Washington, DC: USDA-NASS.
U.S. Environmental Protection Agency (EPA). 2000. Guidelines for Preparing Economic
Analyses. EPA-240-R-00-003. Washington, DC: EPA.
U.S. Environmental Protection Agency (EPA). 2004. Final Regulatory Analysis: Control of
Emissions from Nonroad Diesel Engines. EPA420-R-04-007. Available from
.
Viscusi, W.K., J.M. Vernon, and I.E. Harrington. 1992. Economics of Regulation and
Antitrust. Lexington, MA: D.C. Heath and Co.
Vives, X. 1987. "Small Income Effects: A Marshallian Theory of Consumer Surplus and
Downward Sloping Demand." Review of Economic Studies 54:87-103.
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