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“Prepared for the Mobile Source Air
Pollution Review Committee (MSRC) under
the AB 2766 Discretionary Fund Work
Contract Number: ML07042
Project Title: Reimbursement for Contracted Street
Sweeping Services Using Dedicated CNG
Contractor Organization: City of La Quinta, CA
Date: September 15, 2010
Timothy R. Jonasson, City of La Quinta, CA, Public Works Director/City Engineer
James Lindsey, City of La Quinta, CA, Public Works Maintenance Services Division Manager
Therese Vella-Finorio, City of La Quinta, CA, Management Assistant, City Manager’s Office
Ann Cululi-Weaver, City of La Quinta, CA, Public Works Management Analyst
This report is submitted in fulfillment of Contract Number ML07042 for reimbursement to the
City of La Quinta for contracted street sweeping services using dedicated CNG vehicles under the
partial sponsorship of the Mobile Source Air Pollution Reduction Review Committee (MSRC).
Work was completed as of September 15, 2010.
“The statement and conclusions in this report are those of the City of La Quinta, CA and not
necessarily those of the Mobile Source Air Pollution Reduction Review Committee (MSRC) or the
South Coast Air Quality Management District (SCAQMD). The mention of commercial products,
their sources or their uses in connection with material reported is not to be construed as either an
actual or implied endorsement of such products”
SUMMARY & CONCLUSIONS:
1. Scope, Purpose and Background of Project:
SCOPE - The City of La Quinta contracts with CleanStreet to provide mechanical street sweeping
services. The City’s contract with CleanStreet required that the listed streets be swept a minimum
of once a week, resulting in a minimum of 316 curb miles swept per month, during the entire 25
month contract (ML07042). The contract between the City of La Quinta and CleanStreet required
utilization of dedicated CNG vehicles that comply with South Coast AQMD Rule 1186.1 to
provide street sweeping services for the City.
PURPOSE - The City of La Quinta is located within the jurisdiction of the Coachella Valley and is
thereby impacted by the particulate matter (PM) control measures delineated in the Coachella
Valley State Implementation Plan. The City has adopted an ordinance, control measures and
operating practices that require street sweeping as an air pollution reduction control measure
specifically targeting PM10.
BACKGROUND – Per Contract ML07042, the City has submitted the required 1) copy of its street
sweeping agreement with CleanStreet; 2) a Public Outreach Plan; 3) and Quarterly Progress
Reports. The last Quarterly Progress Report for Month 22 of the Contract ML07042
was submitted in June 2010.
During the 25 months of contract ML07042, the City’s street sweeping contractor (CleanStreet)
swept 4,108 linear curb miles and logged1,248 hours of service. A breakdown of hours and linear curb
miles was provided on the invoices submitted to MSRC as part of the Quarterly Progress Reports.
2. Detailed Description and Analysis:
The City of La Quinta contracted with CleanStreet to provide mechanical street sweeping services to
sweep designated streets located within the northern portion of the City. The City’s contractor,
CleanStreet, swept each designated street a minimum of once a week, resulting in a minimum of 79
linear curb miles swept per week or a minimum of 316 linear curb miles swept per month during the
entire 25 month contract (ML07042).This has resulted in approximately 2 tons of debris/blow sand
removed per week from the streets located within the northern portion of the city. The contractor was
paid at a rate of $25.52 per linear curb mile. This has resulted in a payment of $2,016.08 per week or
$8064.32 per month ($25.52 X 79 linear curb miles = $2016.08). The contractor’s street sweeping
vehicle utilized for the street sweeping operation was a compressed natural gas (CNG) alternative fuel
vehicle. The contractor’s street sweeping vehicle complied with the requirements delineated in the
South Coast AQMD Rule 1186.1.
The street sweepers meet the South Coast Air Quality Management District (SCAQMD) Rule 1186.1.
This CNG powered street sweeper is less polluting, and is in line with our requirements to reduce air
toxic and criteria pollutant emissions by at least 30% lower than the comparable diesel fuel engine.
PM-10 is a pollutant that poses a significant health risk. PM-10 is emitted from motor vehicles
and other sources, one of which is “blown sand” deposited on the road and arterial highways.
As vehicles travel over the roads, the sand is subsequently ground into fine particulates and
blow back or “re-entrained” into the atmosphere. As a result of the City’s frequent street
sweeping operations, resulting in approximately 2 tons of debris/blow sand removed per week from the
streets located within the northern portion of the city, the city has effectively reduced the potential for re-
entrained road dust and mitigated airborne PM-10.
3. Recommended Future Actions:
The City of La Quinta has renewed its’ agreement with CleanStreet through June 2011 for
mechanical street sweeping and has require the use of dedicated CNG vehicles that comply with
South Coast AQMD Rule 1186.1.
The City is using AB2766 monies and General Fund monies to construct a new street sweeping
decant station and a CNG Fueling Station, both should be completed by December 2010 as part
of its Phase I Corporation Yard Master Plan Project. The Public Works Department is currently
investigating the feasibility, and funding opportunities, for converting its fleet equipment to CNG
once the new CNG fueling station is installed at its corporation yard. Phase II of the Corporation
Yard Master Plan includes an equipment wash area for the CNG street sweepers owned by the
City, as well as washing of other city equipment.
The City of La Quinta strongly encourages the AQMD to continue available funding of MSRC or other
funding towards projects in the Coachella Valley that mitigate or reduce the potential for PM-10 and
4. Photograph & Outreach:
Schwarze A-7000CNG Regenerative Air Sweeper w/ MSRC decal.
A Public Outreach Plan was sent to Rachel B. Valenzuela, SCAQMD, on March 10, 2009.
Implementation of the Public Outreach Plan included:
On Saturday, April 25, 2009, the City of La Quinta celebrated its anniversary and held a
celebration at La Quinta Park. The City’s street sweeping vendor, CleanStreet, was
there with their CNG street sweeper handing out information to the public about the
City’s street sweeping program and our flyers.
During the week of May 17th-23rd 2009, we promoted our street sweeping program as
part of our National Public Works Week event.
The City developed a “Street Sweeping Program” promotional flyer (see below). Copies
of the street sweeping program promotional flyers are available to the public at the La
Quinta Library, La Quinta Senior Center and at the Public Works Department counter at
On April 24, 2010, our street sweeping program flyers were made available at the City’s
Annual Birthday Party Celebration from 10am to 1:00pm at La Quinta Park.
The week of May 17-21, 2010 the Public Works Department prominently displayed
information and spoke to visitors to our public counter about the Street Sweeping
Program as part of the American Public Works Association (APWA) celebration of
National Public Works Week.
SIP – Required by federal law,
the State Implementation Plan
(SIP), delineates control
measures the City of La Quinta
must adopt to reduce air
pollution and control PM10.
CARB – Projects being
considered for funding must
meet the California Air
Resources Board (CARB)
criteria and guidelines. CARB is
the lead agency for all purposes
related to the SIP.
Why Does the City of La Quinta Sweep Streets?
MSRC – The Mobile Source Air
City streets are swept once per week in an effort to reduce air pollutants,
Pollution Reduction Review
particularly PM10, and mitigate serious health risks to La Quinta residents.
Committee (MSRC) was
Keeping La Quinta beautiful and free of debris is also an important mission.
established under law (AB2766)
and its sole mission is to fund
projects that reduce air pollution What Day is my Street Being Swept?
from motor vehicles. City streets are swept a minimum of once per week. The City of La Quinta
Street Sweeping schedule and map can be found on the City’s website at
AB2766 Subvention Funds – http://www.la-quinta.org/Index.aspx?page=178.
Provides a revenue source to
assist with the reduction of What is the Latest News in City Street Sweeping?
emissions from motor vehicles. The City recently purchased a compressed natural gas (CNG) powered street
Funds come from a DMV sweeper (pictured above). The total cost was $242,000 and it was purchased
surcharge of $6 per vehicle (40% via the MSRC's Local Government Match Program, which provides Clean
of $4 of the funds goes toward Transportation Funding to cities/counties within SCAQMD (the City will be
city & county projects that reimbursed $25,000 through this program). The City is particularly proud of its
reduce mobile source CNG street sweeper purchase because alternative fuel powered vehicles
emissions). yield cleaner air benefits.
SCAQMD – The South Coast Air
Quality Management District What is Fugitive Dust Control PM10?
(SCAQMD) administers AB2766 PM10 is a pollutant emitted from motor vehicles, blow sand, and other
subvention funds. It is the air sources which is then deposited on roads and highways. As vehicles travel
pollution control agency for over roads, the sand is subsequently ground into fine particulates and blown
Orange County and portions of back into the atmosphere. PM10 poses significant health risks and
Los Angeles, Riverside, and San aggravates a number of respiratory illnesses. To learn more about PM10 and
the Coachella Valley Clean Air Plans, please visit:
For more information about the street sweeping program, please call (760)