THE ENVIRONMENTAL TECHNOLOGY VERIFICATION
PROGRAM
HRTI
U.S. Environmental Protection Agency
*"* ' ' INTERNATIONAL
ETV Joint Verification Statement
TECHNOLOGY TYPE: DUST SUPPRESSANT
APPLICATION: CONTROL OF DUST ON UNPAVED ROADS
TECHNOLOGY NAME: EK35
COMPANY: MIDWEST INDUSTRIAL SUPPLY, INC.
ADDRESS: 1101 3rd STEET SE
CANTON, OH 44707
PHONE: 800-321-0699
FAX: 330-456-3247
WEB SITE: http://www.midwestind.com/
E-MAIL: custserv(o)midwestind.com
The U.S. Environmental Protection Agency (EPA) has created the Environmental Technology
Verification (ETV) Program to facilitate the deployment of innovative or improved
environmental technologies through performance verification and dissemination of information.
The goal of the ETV Program is to further environmental protection by accelerating the
acceptance and use of improved and cost-effective technologies. ETV seeks to achieve this goal
by providing high-quality, peer-reviewed data on technology performance to those involved in
the design, distribution, financing, permitting, purchase, and use of environmental technologies.
ETV works in partnership with recognized standards and testing organizations; stakeholder
groups, which consist of buyers, vendor organizations, permitters, and other interested parties;
and with the full participation of individual technology developers. The program evaluates the
performance of innovative technologies by developing test plans that are responsive to the needs
of stakeholders, conducting field or laboratory tests (as appropriate), collecting and analyzing
data, and preparing peer-reviewed reports. All evaluations are conducted in accordance with
rigorous quality assurance (QA) protocols to ensure that data of known and adequate quality are
generated and that the results are defensible.
The Air Pollution Control Technology (APCT) Verification Center, a center under the ETV
Program, is operated by Research Triangle Institute (RTI) in cooperation with EPA's National
Risk Management Research Laboratory. The APCT Center has evaluated the performance of a
dust suppressant product for control of dust on an unpaved road.
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ETV TEST DESCRIPTION
A field test program was designed by RTI and Midwest Research Institute (MRI) to evaluate the
performance of dust suppressant products. Five dust suppressants manufactured or distributed
by three firms were tested in this program. The field test for Midwest Industrial Supply's EK35
was conducted at two sites: Fort Leonard Wood, Missouri (FLW), and Maricopa County,
Arizona (MC). Test/QA plans for the field testing at FLW and MC were developed and
approved by EPA in July 2003. These test/QA plans describe the procedures and methods used
for the tests. The July 2003 versions of the test/QA plans were based on October 2002 versions
and subsequent test/QA plan addenda (dated February 2003). The goal of each test was to
measure the performance of the products relative to uncontrolled sections of road over a 1-year
period. Field testing was planned quarterly over a 1-year period; however, some logistical
difficulties related to winter weather and then maintenance activities on the roads of interest
arose, and the test/QA plans were revised (Rev 3) to address those issues. At FLW, testing
occurred per the test/QA plan for three roughly 6-month periods. At MC, testing was conducted
for only two quarterly test periods, per the test/QA plan. At FLW, two of those test periods are
summarized below and are considered most representative of product performance; the third
testing period at FLW occurred after unexpected road maintenance, and those data may be seen
in the verification report. At MC, one of the two test periods is summarized below and is
considered representative of product performance; data from the second testing period at MC
that occurred after unexpected road maintenance may be seen in the verification report. The
verification report also contains 90 percent confidence limits for the data collected during all of
the test periods at each site. Emissions measurements were made for total particulate (TP),
particulate matter less than or equal to 10 micrometers (|-im) in aerodynamic diameter (PMio),
and for particulate matter less than or equal to 2.5 |_im in aerodynamic diameter (PM2.s).
One of the host facilities for the field test program, FLW, is a U.S. Army base. The test site used
unpaved Roads P and PA in training area (TA) 236. Roads P and PA are the main access routes
to TA 236 and are traveled by truck convoys, as well as traffic into and out of TA 236. EK35
was applied to test section A located on Road PA; test section F, located on Road P, was left
untreated as the experimental control. Section 3.1 of the verification report provides a figure
showing the test locations. Testing at FLW was conducted during October 2002, May 2003, and
October 2003.
The other host facility for the field test program, MC, is located on Broadway Road (a county
road) near the towns of Buckeye and Wintersburg, Arizona. The sections used for dust
suppressant testing were on portions of the road constructed of shale. The road typically
experiences approximately 150 vehicle passes per day, with the majority of passes by light-duty
cars and trucks. Much of the traffic appears to be associated with local residents commuting to
their workplaces and thus occurs during the early morning and late afternoon hours. Test
sections were located on Broadway Road east of 355th Avenue. EK35 was evaluated on the
section farther east of 355th Avenue. The uncontrolled measurements were conducted on a
separate section of Broadway Road. Section 3.1 of the verification report provides a figure
showing the test locations. Testing at MC was conducted during May 2003 and August 2003.
Table 1 presents test conditions for key parameters that may affect the performance of dust
suppressants on unpaved roads.
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Table 1. Test Conditions
Parameter
Initial application rate, 1/m2
Follow-up application rate, 1/m2
Time between application and testing, days
Precipitation during test week, cm
Precipitation during week before testing, cm
Precipitation between application and
testing, total, cm
Soil moisture during test weeks, (%) —
uncontrolled road
Soil moisture during test
controlled road
weeks, (%)—
Soil silt during test weeks, (%) —
uncontrolled road
Soil silt during test weeks, (%) — controlled
road
FLW,
October 2003
1.3
0.75
119
0.2
1.8
39
0.62-1.5
0.71-1.0
1.7-5.4
1.1-1.7
FLW,
May 2003
1.3
0.30
77
3.7
3.2
24
0.01-1
0.31-1
1.6-4
2.3-6
.8
.1
3
6
MC,
May 2003
0.85
0.33
70
0
0
1.3
0.22
0.17
4.7
1.7
The EK35 product was analyzed using an array of chemical and toxicity tests. The results of
these tests are included in the appendices to the verification report. A summary of the toxicity
data is presented in Table 2.
Table 2. Toxicity Test Results
Species
Ceriodaphnia dubia
Fathead minnow
Americamysis bahia
d = day
EC50 = effective cone
hr = hour
LC50 = lethal concen
LOEC = lowest observ
mg/L = milligrams pe
NOEC = no observed e
VERIFIED TECHNOIX
This verification statemen
for dust control and soil st
a durable reworkable bind
RTI project files and is av
productmaterials/EK3 5M£
Acute LC50
for survival
> 1,000 mg/L (48-hr)
271 mg/L (96-hr)
111 mg/L (96-hr)
Chronic LCgo
for survival
> 1,000 mg/L (7-d)
97 mg/L (7-d)
59 mg/L (7-d)
Chronic EC50
375 mg/L (7-d),
reproduction
114 mg/L (7-d), growth
>50 mg/L (7-d),
growth, fecundity
;entration which affects 50% of sample population
[ration which kills 50% of sample population
ed effective concentration
r liter
ffect concentration
)GY DESCRIPTION
t is applicable to Midwest Industrial Supply 's EK35, which is a product
abilization that provides a dust suppressing mechanism while acting as
er. The material safety data sheet (MSDS) for EK35 is retained in the
ailable at http://www.midwestind.com/Droblemsolver/
•iDS.pdf [accessed
July 2005].
iii
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VERIFICATION OF PERFORMANCE
The overall reduction in particulate matter emissions achieved by the EK35 dust suppressant
compared to uncontrolled sections of road is shown in Table 3.
Table 3. Summary of Test Results
Test location and Average control efficiency, %
period
FLW, October 2003
FLW, May 2003
MC, May 2003
TP
63
74
87
PM10
84
86
90
PM25
a
56
>94
Noted events
Rain events the day before test. b
Rain events the morning of test. °
None.
a No emissions reduction was observed.
b All test sections were wet from rain the previous day. The uncontrolled section was heavily
potholed and another section was used for the test. MRI used traffic to dry the road before
testing.
0 Rainfall in the morning meant that the uncontrolled section of the road was wet and another
section was used for the test.
The APCT Center QA officer has reviewed the test results and quality control data and has
concluded that the data quality objectives given in the generic verification protocol and test/QA
plan have been attained. EPA and APCT Center QA staff have conducted technical assessments
at the test organization and of the data handling. These confirm that the ETV tests were
conducted in accordance with the EPA-approved test/QA plan.
This verification statement verifies the effectiveness ofMidwest Industrial Supply's EK35 to
control dust on unpaved roads as described above. Extrapolation outside that range should be
done with caution and an understanding of the scientific principles that control the performance
of the technologies. This verification focused on emissions. Potential technology users may
obtain other types of performance information from the manufacturer.
In accordance with the generic verification protocol, this verification statement is valid,
commencing on the date below, indefinitely for application of Midwest Industrial Supply's EK35
to control dust on unpaved roads.
Signed by Sally Gutierrez 9/25/2005
Sally Gutierrez, Director Date
National Risk Management Research
Laboratory
Office of Research and Development
United States Environmental Protection
Agency
Signed by Andrew Trenholm 9/16/2005
Andrew R. Trenholm, Director Date
Air Pollution Control Technology
Verification Center
IV
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