HomeMy WebLinkAbout5. P.W. Policies-Street Sweeping, Sidewalks,Trails, Tree Management, Storm Drainage Maintenance
5.
STREET SWEEPING POLICY FOR THE CITY OF SHAKOPEE
I. Purpose
The purpose of this policy is to provide the City of Shako pee's procedures for street sweeping.
The City believes it is in the best interest of the residents for the City to assume the basic
responsibility of sweeping public streets. Reasonable sweeping is necessary for vehicle and
pedestrian safety, water quality issues, environmental concerns and to comply with
requirements set forth by the City's Comprehensive Surface Water Management Plan and its
storm water permit with the Minnesota Pollution Control Agency (MPCA). The City will
provide this service in a cost-effective manner, keeping in mind safety, budget, personnel and
environmental concerns. The City will use its own employees, equipment and/or private
contractors to provide this service. Completion dates are dependent upon weather conditions,
personnel and equipment availability. The Public Works Director, the Public Works
Superintendent or their assigns will be responsible for scheduling of personnel and equipment.
II. Operations
1. Spring Sweeping. Spring sweeping of snow and ice control aggregate will begin when
streets are significantly clear of snow and ice, usually late March or early April, after the
risk of a late snowfall has passed. Priority will be given to areas draining directly into
higher priority water bodies such as the downtown business district, old urban Shakopee,
industrial zones and other areas as determined by the Public Works Director. Spring
sweeping is usually completed by mid-May.
2. Sealcoat Sweeping. Sealcoating is a surface application of an asphalt emulsion followed by
a layer of small aggregate that protects the pavement from the deteriorating effects of sun
and water, plus it provides increased surface friction. In order to provide a clean street
surface, preliminary sweeping will begin within two (2) days prior to application. Once the
aggregate has been applied, final sweeping will begin within seven (7) days and will be
completed within twenty-one (21) days.
3. Fall Sweeping. Fall sweeping will commence in areas of extensive foliage as soon as a
sufficient quantity of leaves have fallen from the trees to make it cost-effective. Priority
will be given to areas draining directly into higher priority water bodies such as the
downtown business district, old urban Shakopee, areas with the greatest accumulation of
leaves and other areas as determined by the Public Works Director. Overall sweeping
priorities will be established based on removing the greatest quantity of leaves as possible.
Therefore, some streets may be swept twice prior to other streets being swept for the first
time.
4. Water Quality Sweeping. Water quality sweeping will be performed on an as needed basis
throughout the year as weather conditions allow. Priority will be given to areas draining
directly into higher priority water bodies such as the downtown business district, old urban
Shakopee, industrial zones and other areas as determined by the Public Works Director.
5. Environmental Sweeping. Environmental sweeping will be performed on an as needed
basis throughout the year as weather conditions allow.
6. Bituminous Milling Recovery Sweeping. Bituminous milling recovery sweeping will be
performed within three (3) days of a grinding, milling and/or cracksealing operation, and as
determined by the Public Works Director.
7. Erosion. Sediment and Debris Sweeping. Erosion, sediment and debris cleanup resulting
from construction activities is the responsibility of the developer, contractor and/or property
owner. Except in cases of emergency, the streets shall be cleaned and swept within twenty-
four (24) hours of receiving instructions and notice from the Public Works Director, City
Engineer and/or Building Official or their assigns. If the developer, contractor and/or
property owner fail to perform this work within the time specified or in the case of an
emergency, the City reserves the right to perform the work and charge the associated cost to
the appropriate party.
8. Tree Maintenance Sweeping. Tree trimming and pruning areas will be swept within one (1)
day of the operation if necessary.
9. Sweeping of County roads is the responsibility of the Scott County Highway Department.
Sweeping of State highways is the responsibility of the Minnesota Department of
Transportation (MNDoT). The City may assist in their sweeping operations under
emergency conditions or cooperative maintenance agreements.
10. Citizen requests for street sweeping will be evaluated by the Public Works Director and/or
the Public Works Superintendent and they will determine the priority.
III. Procedure
1. Street sweeping is a slow process with an average speed for the first sweeping in spring of
two (2) to three (3) miles per hour. The City will use its own employees, equipment and/or
private contractors to provide this service. Typically, centerlines are swept after gutter lines
are swept. Equipment utilized may include mechanical, vacuum and/or regenerative air
sweepers.
2. PrioritieslFrequencies. The City has classified its streets based on their functions and traffic
volumes. The City has also defined areas with importance to the welfare of the community.
Accordingly, sweeping routes will be designed to provide the maximum possible benefit to
higher volume streets and water quality sensitive areas. See the frequencies listed below:
3. Sidewalks and Trails. The City will sweep sidewalks and trails adjacent to its arterials and
collectors one (1) time in the spring after the risk of snowfall has passed and they are clear
of snow and ice. The City will sweep sidewalks and trails as necessary in the downtown
business district and in public areas. Equipment with a front mounted broom will sweep the
material to the street where it will be collected by a street sweeper.
4. Parking Lots. The City will sweep parking lots located at City facilities and those intended
for City use. See the frequencies listed below:
Porous pavements and permeable pavers do require sweeping, but because of their design
they require special consideration. This includes not forcing materials into the "pores" of
the porous pavements and not removing any filler material between the pavers. Prior to
commencing sweeping operations, the City will contact the sweeper manufacturer and the
porous pavement/permeable paver supplier to determine how to best perform the sweeping.
5. Weather Conditions. Sweeping operations will be conducted when weather conditions
permit. Factors that may delay sweeping may include temperatures below thirty-two (32)
degrees Fahrenheit, wind, rain, snow and frozen gutter lines.
6. Work Schedule. Sweeping operations are performed in conjunction with and can be
impacted by other maintenance operations. Sweeping will typically be conducted during a
regular eight (8) hour workday. Extended workdays and shift changes may be necessary
for spring sweeping, fall sweeping and emergency conditions to provide maximum
efficiency. For safety reasons, no operator will work more than a twelve (12) hour shift in
any twenty-four (24) hour period.
7. Safety Concerns. Sand, sealcoat aggregate or other sediment and debris on City streets can
create a dangerous condition for vehicles, motorcyclists, bicyclists and pedestrians. It is not
practical to sign all streets for potentially dangerous conditions. During sealcoating,
grinding, milling and cracksealing operations, warning signs indicating loose rock will be
placed on each end of the project limits and other areas deemed necessary by the Public
Works Director. These signs will remain in place until street sweeping is complete per this
policy.
8. Training. The City will provide training on a regular basis to employees involved in the
routine use and maintenance of the street sweeping equipment. At a minimum, training will
include:
. Daily operation checklist . Daily and long-term preventative
procedures maintenance
. Reasons for street sweeping . Minor repairs
. Machine operation . Machine and personal safety
. Trouble-shooting indicators and requirements
problems
9. Complaints. Complaints concerning street sweeping will be taken during normal working
hours. Complaints involving access to property or problems requiring immediate attention
will be handled on a priority basis as determined by the Public Works Director. The City
will document all complaints and upgrade this policy as necessary while giving
consideration to the constraints of available resources.
10. Documentation. The City will document all of its inspection, maintenance, complaint and
emergency responses. The City will also document circumstances that limit its ability to
comply with this policy. These records will be kept in accordance with the City's record
retention schedule.
11. This policy is a guide for City staff and residents of the community. The City
Administrator, the Public Works Director, the Police Chief and the Fire Chief may deviate
from this policy if they feel it is in the best interest of the City while considering unusual
circumstances and emergency conditions.
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TO: Mayor & City Council
Mark McNeill, City Administrator
FROM: Bruce Loney, Public Works Director
SUBJECT: Street Sweeping Best Management Practice Study
DATE: July 24, 2008
Attached is a report prepared by the Minnesota Local Road Research Board (LRRB) , as
information sheets for implementing a Street Sweeping Best Practice. This report contains
information and includes:
. Reasons for sweeping (air quality, water quality, appearance, maintenance clean-up)
. Types of roadways to be swept
. Type of debris to be swept (dust particles, loose particles, vegetation, packed dirt, etc.)
. Available equipment
. How the equipment can be used
. Budget - capital, operations and maintenance costs
. Agencies approval to water quality regulations
Also included in the report is providing general best practice information for street sweeping
pertaining to:
. Various ways of treating quality
. Capital cost of street sweepers
. Operational cost of street sweeping
. Maintenance cost of street sweeping
Staff is reviewing this report and others to prepare a Street Sweeping Maintenance Policy for
Council approval later this year. Effective street sweeping is being considered a very cost
effective practice for improving water quality in our rivers, streams and lakes.
Also, newer regulations from the MPCA on Total Maximum Discharge Loadings (TMDL'S)
will be coming soon and may require additional storm water treatment. Staff is reviewing these
requirements, the study on sweeping and purchase, leasing, renting or contracting options to
meet this need.
In future Council meetings, staff will be bringing a Street Sweeping Policy and recommendations
on meeting street sweeping needs.
~'io~
Public Works Director
ENGR/2008-PROJECTS/2008-COUNCIL/STREET-SWEEPING
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Technical Report Documentation Page
1. Report No. 2, 3. Recipients Accession No.
MN/RC - 2008RIC06
4, Title and Subtitle 5. Report Date
Resource for Implementing a Street Sweeping Best Practice February 2008
6.
7. Author(s) 8. Performing Organization Report No.
Renae Kuehl, Michael Marti, Joel ScWlling
9. Performing Organization Name and Address 10. Project/Task/Work Unit No.
SRF Consulting Group, Inc.
One Carlson Parkway North, Suite l50 11, Contract (C) or Grant (G) No.
Minneapolis, MN 55477-4443
12. Sponsoring Organization Name and Address 13. Type of Report and Period Covered
Minnesota Department of Transportation Final Report
Research Services Section
395 John Ireland Boulevard Mail Stop 330 14, Sponsoring Agency Code
St. Paul, Minnesota 55155
15. Supplementary Notes
16. Abstract (Limit: 200 words)
This resource was developed to assist agencies in implementing a street sweeping best practice. The Technical
Advisory Panel decided these best practices are most useful for application in the State of Minnesota. These
information sheets are designed to provide technical staff, policy and decision makers with guidance on a
number of topics including: Best Practices Overview, Types of Sweepers, Reasons for Sweeping and Sweeping
and Roadway Function.
TWs series of information sheets were put together for agencies to develop criteria to enhance the street
sweeping process. The four information sheets are intended to be used as a group, highlighting the different
components that should be considered when implementing/enhancing a street sweeping program.
17. Document AnalysisJDescriptors 18,Availability Statement
Street Sweeping Roadway Maintenance Clean-up No restrictions. Document available
Mechanical Sweepers Roadway Debris from: National Technical Information
Regenerative Air Sweepers Debris and Trash Removal Services, Springfield, Virginia 22161
Vacuum Sweepers Sweeping Frequency
Air Quality Green Pavements
Water Quality Best Practices
19, Security Class (this report) 20, Security Class (this page) 21. No, of Pages 22. Price
Unclassified Unclassified
Implementing a Street Sweeping Best Practice 'Jt
Introduction W!~
The Minnesota LRRB has developed a series of information sheets as a resource for
Implementing a Street Sweeping Best Practices. These sheets are designed to provide technical
staff, policy and decision makers with guidance on a number of topics including:
1. Best Management Practices Overview
2. Types of Sweepers
3. Reasons for Sweeping
4. Sweeping and Roadway Function
In preparing this resource it is acknowledged that there are numerous research studies and
reports on Street Sweeping. At the time of printing, this resource is a synthesis of the Technical
Advisory Panel (TAP) consensus of the most useful information for application in Minnesota.
This series of information sheets were put together for agencies to develop criteria to enhance
the street sweeping process. The four information sheets are intended to be used as a group,
highlighting the different components that should be considered when implementing/enhancing
a street sweeping program.
Additional copies of these sheets can be obtained at the LRRB Website: www.lrrb.org (Search:
Street Sweeping)
Acknowledgements
The authors would like to thank the following individuals and organizations for their
contributions to this document:
Technical Advisory Panel
Tom Colbert, City of Eagan (Chair)
Jim All, Environmental Enhancements, LLC
Ken Haider, Ramsey County
Kevin Harms, Olmsted County
Mike Kennedy, City of Minneapolis
Mark Kinter, Industry Technical Advisor
Kevin Larson, City of Brooklyn Park
Alan Rindels, MnlDOT
Kathleen Schaefer, MnlDOT
Jim Triebold, City of Woodbury
Disclaimer:
This report represents the results of research conducted by the anthors and does not necessarily represent the views or policies of the Minnesota
Department of Transportation or the Minnesota Local Road Research Board, This report does not contain a standard or specified technique.
The authors and the Minnesota Department of Transportation and/or Local Road Research Board do not endorse products or manufacturers. Trade or
manufacturers' names appear herein solely because they are considered essential to this report.
Local Road Research Board: February 2008
Implementing a Street Sweeping Best Practice 'l
street Sweeping Best Practice Overview lRRB
Overview
As with any other best practice, an agency needs to balance many factors
in order to achieve their best practice. The information presented within
this document is provided to assist an agency in developing a best practice.
This information includes:
. Reasons for sweeping (air quality, water quality, safety, appearance,
maintenance clean-up)
. Types of roadways to be swept
Type of debris to be swept (dust, small particles, large particles, -I
. '<
vegetation, packed dirt, etc.) "tI
CD
Available equipment en
.
0
How the equipment can be used -
. (,I)
. Budgets - capital, operations and maintenance costs ~
CD
Agency's approach to water quality regulations CD
. "tI
The following pages of this overview will provide general best practice information for street sweeping pertaining to: CD
...
en
. Various ways of treating quality (street sweeping versus other methods)
Capital cost of street sweepers ;:11:1
. CD
0
. Operational cost of street sweeping en
0
. Maintenance cost of street sweeping ::s
en
From a combination of the information provided within this resource, conversations and networking with peer -
0
agencies and from technical assistance from manufactures, an agency will have the information and knowledge to ...
tI'l
balance the key factors and develop a best management practice. ~
CD
Various Ways of Treating Quality CD
'0
::::I
Converse to some other major Metropolitan Planning Organizations (MPO), here in Minnesota, and specifically the (Q
Twin Cities metropolitan area, one important factor that has influenced street sweeping practices is the overall
approach taken in addressing and treating water quality standards. tI'l
~
Minnesota is known for the quality of receiving waters for recreation and the propagation of fish and wildlife. CD
Improving quality in the 1970s and 80s involved separating stormwater and wastewater from combined sewers, CD
'0
primarily in the Metro Area and providing extensive treatment for the latter source to maintain receiving water quality ::::I
standards. As mandated by the Clean Water Act and EPAs Phase 1 (11/16/90) and Phase 2 (12/8/99) stormwater (Q
regulations, treatment methods have involved implementing best management practices (BMP) such as detention 0
ponds, underground structural devices, street sweeping and more recently rain gardens and low impact development ::::I
criteria. 0-
;;0
While Minnesota emphasized construction of structural BMP devices, street sweeping as a nonstructural operation 0
0
provides significant benefits in achieving quality not only in the receiving water, but roadway appearance, safety, 0-
potential air quality improvement and improving structural device maintenance. Implementing a street sweeping ~
program using higher efficiency street sweepers either alone or in combination with mechanical sweepers and a
"<
coupled with sweeping frequencies reflecting the amount of roadway material generated is a prudent approach for 'TI
achieving quality. c:
::s
Table 1 provides a suggested street sweeping program recognizing the differences in roadway material generation. 0
-
Minimum street sweeping frequencies may be adjusted dependent upon the receiving water and the level of quality 0
desired by the owner/operator or mandated by regulation. ::s
Local Road Research Board: February 2008 Page 1 of 18
Implementing a Street Sweeping Best Practice ~
Street Sweeping Best Practice Overview l~~~
Table 1: 1
Proposed Street Sweeping Frequencies
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(\)
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'Schilling, J,G. 2005, Street Sweeping - Repon No, 3, Policy Development and Future Implementation Options for Water Quality Improvement, Prepared for Ramsey-Washington 0
Metro Watershed District (htlp:/Iwww.rwmwd,org) Little Canada, Minnesota 55117, -
"Frequency may depend upon business community and local government expectations. ~
~
(\)
Cost Considerations (\)
"
(\)
...
The capital cost for purchasing a street sweeper can be quite high, en
ranging from $140,000 to $250,000 depending upon the sweeper type
(mechanical, regenerative-air, etc.) and options included. Table 2 is a ;:'Ill
modification of previous informationt augmented by recent sweeper (\)
0
purchasing information from governmental units. Major options II>
0
affecting the purchase price are secondary engine fuel type and size ::s
(gasoline, diesel, CNG), sweeper box material (metal type, coatings), II>
-
hopper dump style, and accessories (vacuum wand, interior cab 0
features, etc.). An equally important factor in the purchasing decision is ...
(I)
street sweeper service life. While high efficiency street sweepers ~
(regenerative-air and vacuum) are initially more expensive, their (\)
expected average service life range is significantly longer than (\)
"
mechanical sweepers due primarily to less moving parts requiring ::s
repair and replacement. Longer service life translates into lower co
Operation and Maintenance expense on a unit basis (dollar cost per
curb-mile swept). (I)
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Table 2: (l)
(l)
Street Sweeper Cost Data (2007 dollars) 1 "
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1 Schilling, J.G. 2005. Street Sweeping - Report No.1. State of the Practice. Prepared for Ramsey-Washington Metro 0
Watershed District (http://www.rwmwd.org). Little Canada. Minnesota 55117. -
0
::s
Local Road Research Board: February 2008 Page 2 of 18
Implementing a Street Sweeping Best Practice '!
Street Sweeping Best Practice Overview IRRB
flO.O.DU2AIIC.H
ao~..e>
Operator Training
Street sweepers, whether mechanical or high efficiency types, are
complex machines to operate in an efficient manner. Operator training
should include two important components:
1. Street sweeper operation
2. Reasons for street sweeping
While great strides have been made by sweeper manufactures with
respect to touch, joy-stick and other improvements for in-cab operation,
the bottom line is what's happening both within the sweeper itself and
on the street that counts. A very important part of the purchase price of
any new sweeper is including the cost of factory-training for operators.
Street sweeper operator training should include at a minimum: daily 0
operation checklist procedures, machine operation, trouble-shooting -
V>
indicators and problems, daily and long-term preventive maintenance, ~
minor repairs, machine and personal safety requirements. Factory- (I)
training for operators and mechanics often comprises a minimum of 32 (I)
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hours of lecture and/or hands-on efforts. (I)
...
While implementing factory-training in conjunction with a new sweeper In
purchase is a high priority, equally important is having an internal :;:D
training program for new hires. While a new hire may need a (I)
commercial drivers license (CDL), at a minimum an established training Q
en
program with a designated trainer(s), or documented standardized test 0
(e.g. going through a series of maneuvers) that new operators must pass :::l
en
to operate the street sweeper on various roadways or alleys would be -
necessary to assure competence in machine operation. The training 0
...
program should designate the amount of time that a trainee spends riding VI
with and watching a trainer, the minimum amount of time spent driving ~
accompanied by a more senior employee, and a minimum set of (I)
(I)
maneuvers that a trainee must be able to accomplish before riding alone. "0
The training program should also include a preventive maintenance :::l
lesson provided by a sweeper mechanic. co
Training should include the Reasons for Street Sweeping. Employees in VI
targeted positions (whose interactions, jobs, and activities affect storm ~
water quality) should be provided information regarding the (I)
(I)
requirements of a storm water management program, trash and debris "0
control and air quality issues relating to street sweeping. Efficiency is :::l
significantly enhanced by having operators that understand machine co
operation and the reasons for street sweeping. A successful street Q
sweeping program incorporates both. :::l
Q.
:;:D
Preventative Maintenance 0
Q
Q.
Preventive maintenance will assure that a street sweeper achieves its ~
service life. Often street sweepers and trucks are used by more than one Q
'<
driver, thus it may be difficult to determine which operators may neglect ."
periodic preventive maintenance requirements. In addition, scheduled c:
maintenance for the operational vehicles may be overlooked because the :::l
0
units needing such work are cleaning the streets. An internal program -
which tracks scheduled maintenance also contributes to achieving 0
:::l
sweeper service life.
Daily washing of street sweepers is imperative, especially in snow-belt
states where deicers are incorporated into street debris and sediment.
service life is significantly reduced as a result of corrosion of metal parts
exposed to deicer chemicals
Local Road Research Board: February 2008 Page 3 of 18
Implementing a Street Sweeping Best Practice ~
Types of Street Sweepers IRRB
lOCAL
tOJl.RC
This sheet focuses on types of street sweepers commonly used QI::I
and available in Minnesota: :t
."
· Mechanical broom ,
· Regenerative air 0
<
· Vacuum CD
....
· Newer-Technology <
CD
~
Detailed information on each of these sweepers can be found on
the following pages.
Each of these sweepers has been designed to perform specific functions and therefore vary in
functionality. Additionally, every agency's sweeping practice also varies. Therefore, agencies should
conduct a thorough assessment comparing their needs with the attributes of the various sweepers to
determine which type of sweeper(s) would work best for their operation.
The following questions help define agency sweeping needs:
. What are your reasons for sweeping?
- Water quality
- Air quality
- Appearance (trash/debris removal)
- Safety :='l:I
CD
- Roadway maintenance clean up c
tJ>
0
What type of debris will you be sweeping (if all, how will you prioritize?) :::s
. tJ>
- Dust -
0
- Small Materials (sand, silt, sediment, seal coat aggregate, etc.) ...
va
- Large material (road debris, trash, etc) ~
- Vegetation (wet) CD
CD
- Packed dirt "0
:::s
(Q
. What is the surface type/condition/cross section of pavement (smooth, uneven, alleys, etc.)?
va
. How important is hopper capacity (volume vs. payload)? ~
CD
- Sweeper hopper capacity is shown as a volume (e.g. cubic yards). Usable volume is often CD
shown as less due to internal equipment restrictions. But, hopper payload capacity is "0
:::s
limited by the truck chassis. Thus, the actual hopper payload is a function of the materials (Q
being swept. For example, leaves, grass clippings, twigs, and trash will maximize usable c
hopper volume capacity, while sweeping sand or a sand/gravel mixture often results in a :::s
payload capacity less than the usable volume due to the chassis limit. e.
:='l:I
0
. Does the sweeper's dumping style matter (front, rear, or side)? If so, which type do you need? 0
e.
~
0
There is a "blank" table at the end of this section to assist in assessing an agency's needs to the various '<
.."
sweeper types. c:
:::s
0
-
* The street sweeper examples listed on the following pages are not intended to be inclusive of 0
all manufactures/models ::I
Local Road Research Board: February 2008 Page 4 of 18
Implementing a Street Sweeping Best Practice ~
Types of Street Sweepers LRRB
tQ.l,P-...lII:Il
DO>.Rtl
Mechanical Broom Sweepers l:li:I
~
."
.
This class of street sweeper is still utilized as 0
the primary street sweeper type by a majority of <
municipalities within the United States. /I)
~
Mechanical street sweepers use a gutter broom <
/I)
to move the debris from the curb into the path ~
of the main broom which then works with
either a squeegee (chain-and-paddles) or a
conveyor belt to move debris from the ground
into a hopper contained within the unit. Broom
sweepers are very good at picking up debris in
any weather condition and can "dig into" and
remove hard packed dirt and mud. Dust control
for this type of machine can be a problem
because of the churning action of the brooms.
The onboard water spraying system (dust
control) helps to mitigate dust when working in
low debris areas; however, they do not work
well in heavy debris areas and resulting dust
can affect air quality. Because of this, a flush ""
/I)
truck is sometimes used with mechanical Q
sweepers to help mitigate dust. en
0
::s
en
Mechanical Sweepers: Chain-and-Paddle -
0
~
(A
Functionality: Limitations: Examples*: Addresses: :E
/I)
Effective for wet/matted leaves Paddles limit debris size to 6" Allianz M350 o Water Quality /I)
and digging/sweeping packed dirt diameter or smaller Elgin Broom Bear o Air Quality '0
Elgin Road Wizard Iif Appearance ::s
Able to sweep millings and coarse Compared to the belt, chain-and- lO
sand better than belt sweepers paddle needs to be replaced more Schwarze M5000 Iif Safety
(no "inside" areas of buildup) often Schwarze M6000 Iif Roadway Maintenance (A
Compared to Belt Sweepers, less Does not pick up fine materials as Hopper Capacity: Clean up ~
/I)
daily build up well as other sweepers 4,5 - 7,5 cubic yards /I)
'0
Requires less power than Particles that do not get picked up Dump Style: ::s
regenerative air and vacuum are spread across the street . . lO
sweepers surface sometimes making the Side M~ltl-Level Q
street look dirty or streaked Rear Mid-Level ::s
0-
""
Mechanical Sweepers: Belt 0
Q
Addresses: 0.
Functionality: Limitations: Examples*: :E
Able to pick up large debris Conveyor must be cleaned daily Elgin Eagle o Water Quality Q
o Air Quality '<
(plastic bottles, cans, branches) to prevent buildup of debris Elgin Pelican -n
Able to pick up wet/matted and Chip seal aggregate and winter Iif Appearance c
Hopper Capacity: Iif Safety ::s
large amount of leaves better than abrasive (sand) can build up 0
other sweepers inside belt 3.5 - 4.5 cubic yards Iif Roadway Maintenance -
Clean up 0
Effective at "digging into" and Does not pick up fine materials as Dump Style: ::s
removing packed dirt from well as other sweepers Front Multi-Level
roadway Particles that do not get picked up Side Multi-Level
Requires less power than spread across the street surface
regenerative air and vacuum sometimes making the street look
sweepers dirty or streaked
Local Road Research Board: February 2008 Page 5 of 18
Implementing a Street Sweeping Best Practice 'l
Types of Street Sweepers IRRB
Regenerative Air Sweepers CI'
:t
"'Ill
.
Air Out t 0
Gutter Brooms <
tI)
..
<
tI)
~
Regenerative air street sweepers use gutter brooms to Water must qe used to "knock" the dust and small
move debris from the curb into the path of the sweeper particles out of the air and into the hopper or they will be
head. The regenerative air process blows air into one end pulled through the fan and cause wear on the impeller.
of the sweeper head and onto the pavement dislodging ;;itII
materials. The other end of the sweeper head has a tI)
Q
suction hose that vacuums up the materials and deposits In
it into a hopper. The air is then re-circulated back through 0
::s
the system to the sweeper head, which is a distinctly In
different operation from a pure vacuum system. -
0
...
en
~
tI)
tI)
Regenerative Air Sweepers '0
::s
Functionality: Limitations: Examples*: co
Can remove fine sand and silt, but Debris is limited to diameter of air out Allianz RT 655
surface must be dry hose Elgin Crosswind en
~
Ability to pick-up materials entrained Difficulty in picking up weUmatted Elgin Fury CD
within cracks leaves Schwarze A7000, A8000 A9000 CD
Tymco 435 '0
Can have a larger than average hopper Particles that do not get picked-up are Tymco 600 & 500 ::s
spread across the street surface co
Can have vacuum hose attachment Hopper Capacity: Q
(i.e. catch basins) sometimes making the street look dirty ::s
or streaked 4.0 - 9.6 cubic yards 0..
Regenerative head reaches up to eight Requires more power than mechanical Dump Style: ;;itII
feet in width 0
broom sweepers; noise may be a Rear Tilt Q
consideration n.
Side Multi-Level ~
Should be used in above freezing Rear Mid-Level 0
temperatures only Rear Raker '<
-n
More efficient operation on flat Addresses: c:
::s
pavement surface ~ Water Quality 0
-
~ Air Quality 0
~ Appearance ::s
~ Safety
o Roadway Maintenance
Clean up
Local Road Research Board: February 2008 Page 6 of 18
Implementing a Street Sweeping Best Practice 'Jt
Types of street Sweepers l~~!
Vacuum Sweepers m
:t
"U
.
0
<
I'D
...
<
I'D
~
Transfer Broom
Gutter Broom
Vacuum sweepers use gutter brooms to move debris into windrows debris from the traffic path to the vacuum.
the path of a vacuum nozzle. There are various types of Vacuum sweepers utilize a fan that exhausts its air
vacuum sweepers; the one illustrated here has the directly to the atmosphere. These sweepers must use ;:i!:I
vacuum nozzle located near the tire along the curb line. water for dust suppression or the fan will blow large I'D
This allows the curb to be dry vacuumed for maximum amounts of dust into the atmosphere causing c
1;1)
cleaning efficiency. A center mounted transfer broom environmental issues as well as exaggerated fan wear. 0
::s
1;1)
-
0
...
Vacuum Sweepers (I)
~
Functionality: Limitations: Examples*: I'D
I'D
Removes fine sand and silt. but surface Difficulty picking up weUmatted leaves Elgin Whirlwind 1:::1
must be dry Allianz VT 650 ::s
Cannot pick up tree brush (C
Best for situations with most debris in Water must be used in the hopper for Hopper Capacity:
gutter dust suppression (prevents dust from 8.0 - 8.5 cubic yards (I)
~
Will vacuum material directly from being blown out via the fan exhaust) Dump Style: (D
gutter (D
Debris is limited to 3-inch diameter or Rear Tilt 1:::1
Ability to pick up entrained material smaller ::s
within cracks under vacuum head Addresses: (C
Requires more power than mechanical 1!1 Water Quality c
Can have vacuum hose attachment broom sweepers; noise may be a ::s
(i.e. catch basins) consideration o Air Quality Q.
Water should be used or excessive fan 1!1 Appearance ;:i!:I
1!1 Safety 0
wear will occur c
o Roadway Maintenance Q.
More efficient operation on flat Clean up ~
pavement surface c
-<
Should be used in above freezing .."
c:::
temperatures only ::s
0
-
0
::s
Local Road Research Board: February 2008 Page 7 of 18
Implementing a Street Sweeping Best Practice '!
Types of Street Sweepers ~~~
Newer Technology l:ICI
~
."
.
Newer technology sweepers are a refinement of some of the other 0
technologies to allow the equipment to be used in either a wet or dry <
mode. These sweepers can be more costly than other sweepers and /I)
~
noise may be a consideration. <
/I)
Within the current marketplace there are two manufactures of ~
sweepers with differing technology:
· A refinement of the mechanical sweepers (belt) where the brooms
are enclosed creating a vacuum which collects the dust and fines. Sweepers - MechanicallVacuum
The hopper system has a filtered vacuum fan. Made by Elgin.
· A regenerative air machine that employs a self-contained multiple
filtration system. Made by 1Ymco.
The industry is continually developing new and better equipment.
The reader is encouraged to research new equipment as it
progresses.
,.,
/I)
0
Sweepers - Regenerative Air tJ>
0
::s
tJ>
Sweepers - Mechanical/Vacuum -
0
~
Vl
Functionality: Limitations: Examples*: Addresses: ~
/I)
Removes fine sand and silt Broom skirting limits ingestion of Elgin Eagle FW G1 Water Quality /I)
Able to pick up wet, matted large amounts of leaves in the fall Elgin Pelican Waterless G1 Air Quality "0
vegetation G1 Appearance ::s
More skirting parts that are prone co
Able to pick up large debris to wear Hopper Capacity: G1 Safety
(plastic bottles, cans, small 3.5 - 4.5 cubic yards G1 Roadway Maintenance Vl
branches) Clean up ~
Wet operation with skirts Dump Style: /I)
/I)
removed Front Multi-Level "0
Can use dry vacuum or water to Side Mid-Level ::s
co
suppress dust 0
::s
Year round operation 0..
,.,
0
Sweepers - Regenerative Air 0
0..
Functionality: Limitations: Examples*: Addresses: ~
G1 Water Quality 0
Removes fine sand and silt Should be used on flat surface to Tymco DST 4 & DST 6 G1 Air Quality "<
seal sweeper head ."
Year round operation Hopper Capacity: G1 Appearance c
G1 Safety ::s
Debris is limited to diameter of 4.5 - 7.3 cubic yards 0
vacuum hose o Roadway Maintenance -
Dump Style: Clean up 0
Difficulty in picking up wet, ::s
matted vegetation Rear Tilt
Local Road Research Board: February 2008 Page 8 of 18
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Implementing a Street Sweeping Best Practice ~
Reasons for Sweeping ~~~
There are five reasons to conduct roadway street sweeping operations. The list of reasons does not reflect the level of 0:1
importance, but each may relate to one another. s:
."
. Appearance: Debris and trash removal .
. Air Quality 0
<
t1l
. Roadway Maintenance Clean-up ...
<
Safety t1l
. ~
. Water Quality
-I
Selecting a street sweeper requires an understanding of the five reasons, applying them to the roadway situation( s) and '<
"tI
evaluating the right equipment for the job. For example, if appearance was the only reason, then selecting a t1l
en
mechanical broom machine would be appropriate. Examining "Reasons for Sweeping" is useful in the equipment 0
-
selection process. (I)
~
t1l
t1l
"0
Appearance: Debris & trash removal t1l
...
en
Roadway appearance (aesthetics) presents the public with a positive
view for special areas, e.g. Central Business District (CBD). The
business community may pay a greater tax or fee to offset the cost of
higher street sweeping frequencies (once per week) within a CBD. More
frequent sweeping is practiced by large and smaller communities in
Minnesota (e.g. Minneapolis, Saint Paul, and North St. Paul). Intensive
sweeping presents a pleasing environment for prospective customers,
often translating into increased economic viability for a central business
district or shopping center.
Inconsiderate disposal of convenient consumer products (cigarette butts,
pop cans, water bottles, plastic bags, etc.) leads to street sweeping for
trash removal from catch basin inlets and roadway gutters. Seasonally
(fall and spring) public works operations implement street sweeping to
remove accumulated leaves and debris from the gutter line. Removal of
such materials is critical in preserving hydraulic efficiency of (;)
~
stonnwater infrastructure. If catch-basins become clogged with leaves t1l
and debris, the risk of roadway flooding increases, thereby presenting a t1l
hazard to the traveling public. "tI
:::J
Street sweeping exclusively for trash removal within large drainage co
areas can be an expensive proposition and should be evaluated with 0
other measures (pollution prevention education, catch-basin inserts, and :::J
Q.
outfall trash collection devices). ;;0
0
Conclusion 0
Q.
Street sweeping for appearance (debris and trash removal) purposes and ~
0
infrastructure efficiency is an important reflection upon a community's '<
environment and a good public works practice to maintain proper "TI
infrastructure operating efficiency. It's best accomplished with either c:
:::J
mechanical or higher efficiency sweepers. 0
-
0
:::J
Local Road Research Board: February 2008 Page 10 of 18
Implementing a Street Sweeping Best Practice 'Jr
Reasons for Sweeping ~~~~
Air Quality tl7
:t
There is a consistent direct relationship between high levels of fine ."
particles in the surrounding air and health related issues: .
. an associated increase in mortality rates 0
<
(\)
. respiratory infections ...
<
. the number and severity of asthma attacks (\)
=e
. the number of hospital admissions observed in different parts of
the United States and various areas around the world "'"
'<
Particles less than 10 micrometers (microns - approximately 1/10 the 'tJ
diameter of a human hair) in diameter are known as PMIO and pose a (\)
UI
health concern because they can be inhaled into and accumulate in the 0
respiratory system.' There are essentially two sources of PMIO particles: -
V)
natural sources, including sea salts, volcanic ash, pollens, and man-made =e
sources originating from direct emissions - industrial facilities; fugitive (\)
dust sources (e.g., construction sites) and paved and unpaved road dust; (\)
'tJ
and secondary particulate matter formed in the atmosphere. (\)
...
Street sweeping using PMIO certified equipment is done to reduce the UI
amount of particulate matter stirred-up from vehicular traffic on paved
roadways. Street sweepers are certified as PMLO-efficient or capable of a
picking-up greater than or equal to 80% of particles less than or equal to
10 microns. These types of street sweepers, especially higher efficiency
models are used to limit the amount of PMIO stirred-up during the street
sweeping process, thus improving air quality at street leveJ.2
Mathematical modeling in the City of Toronto, Ontario suggests that
removing 80% of PMIO through street sweeping will provide a 25 - 30%
improvement in the City's fine particle air quality and even greater
improvement is expected for pedestrians and cyclists on the City's
arterial roads.' Sweeping for air quality control is best accomplished
with higher efficiency sweepers (regenerative-air and newer technology
sweepers)
Conclusion V)
=e
Air quality can be impacted from fine particles stirred-up on the (\)
(\)
roadway surface. Street sweeping with higher efficiency sweepers 'tJ
(vacuum, regenerative-air and newer technology sweepers) may ::J
improve air quality. CO
a
'PMIO website: http://www.epa.gov/tnn/naaqs/pmlpml03ndex.htmI ::J
Q.
'In Clean Roads to Clean Air Program, City of Toronto, Ontario, Canada. ;:lI:J
http://www.toronto.ca/transportation/environment/ 0
a
'Stevanovic-Briatico, Vesna. 2007. Clean Roads to Clean Air Program. 2007 APWA Q.
=e
Public Works Congress and Exposition. September 10,2007. San Antonio, Texas. a
'<
....
c:
::J
(j
-
0
::J
Local Road Research Board: February 2008 Page 11 at 18
Implementing a Street Sweeping Best Practice ~
Reasons for Sweeping IRRB
-~
!OJ'.RO
Roadway Maintenance Clean-up l:J:l
3:
Conducting street sweeping for roadway maintenance clean-up falls into "0
two categories. The first consists of routine sweeping of roadways .
impacted with erosion and sedimentation from development sites. Such 0
sweeping is undertaken on a weekly or as needed basis (following <
II)
significant rainfall events) or may be required by state or local permits. '"'"
<
Often such sweeping is conducted by contract sweeper companies hired II)
by the developer. :e
The second category is street sweeping in conjunction with roadway
surface maintenance (pavement management plan) involving crack -I
'<
sealing and/or seal coating. The roadway surface is swept prior to "0
sealing (best accomplished by using regenerative-air or vacuum II)
'"
sweepers). An asphalt binder (sealcoat) is then applied followed 0
immediately by aggregate chips. One to two days later, excess chips are -
VI
swept from the roadway surface (best accomplished by using :e
mechanical broom or regenerative-air sweepers). II)
II)
Conclusion "0
II)
'"'"
Street sweeping for Roadway Maintenance Clean-up is conducted as a '"
result of erosion and sediment from construction sites and/or in
conjunction with ongoing maintenance involving crack and chip sealing.
Either mechanical and higher efficiency sweepers would be best to
accomplish these tasks.
Safety
Roadways should be kept free of debris and other materials that may
impede the safety of the traveling public. Two safety issues are apparent.
The first applies to vehicular traffic (especially motorcycles)
approaching intersections where coarse and fine sediment materials may
be left on surface causing greater braking distance, increased risk of
skidding and potential loss of vehicle control. This safety issue may
result from the application of abrasives (sand and deicers) during winter
conditions. Winter and/or spring street sweeping resolves the issue. VI
:e
The second safety issue applies to the bicycling public. Attached II)
II)
bikeways striped and within the curb and gutter line may accumulate "0
debris and sediment in the absence of timely street sweeping. Such a :s
condition may force the cyclist into the traffic lane, increasing the co
accident risk. Debris size is not critical because bicycle tires are fairly 0
:s
thin in thickness, primarily for weight and speed. Thus, even small sizes c..
of debris may be hazardous. Bike lanes are often included on collector ::ll:I
and arterial streets; therefore street sweeping may be a more frequent 0
0
occurrence. c..
Conclusion :e
0
'<
Street sweeping should be conducted to reduce safety hazards to the ...
traveling public for both vehicles and cyclists. Mechanical and higher c:
:s
efficiency sweepers can accomplish these tasks. (')
-
0
:s
Local Road Research Board: February 2008 Page 12 of 18
Implementing a street Sweeping Best Practice ~
Reasons for Sweeping IRRD
LO(:AL
Ro.l,b-"'lICll
RoA~l>
Water Quality QI:I
s:
Maintaining or improving water quality enhances the quality of our -a
environment and demonstrates compliance with local and state .
regulatory requirements to reduce pollutant loading to receiving waters. 0
Street sweeping is an accepted best management practice (BMP) for <
II)
reducing pollutant loading into receiving waters. When street sweeping ...
<
is combined with other treatment BMPs, water quality can be improved. II)
Source, Cause and Effects :IE
Urban stormwater runoff contains pollutants that are most often -I
'<
associated with fine materials - silt and clay sediments which get washed "0
off the roadway surface. Table 3 illustrates typical characteristics for II)
II>
roadway sediments. The source of the sediments can be erosion from 0
adjacent property, roadway deterioration, and vehicle traffic. Table 3 -
V)
higWights that silt and clay sediments are often an order of magnitude :IE
higher in pollutant concentrations (heavy metals, nutrients and II)
hydrocarbons) when compared to coarser materials. II)
"0
II)
Table 3: ...
II>
Roadway Soil Particles: Class, Size and Pollutant Characteristics1
Gravel 2.0 Range Range Range Range
Medium to very coarse 87 -1,230 110 - 810 0.03 - 0.18 2.1 - 9.2
0.25 - 2.0
sand Average Average Average Average
483 338 0.08 5
Very fine to fine sand 0.050 - 0.250
V)
:IE
II)
II)
"0
::J
co
0
::J
'Breault, RF., Smith, K.P., and Sorenson. JR., 2005. Residential streetRdirt accumulation rates and chemical composi...,oon, and removal efficiencies by mechanica1- and vacuum.rype sweepers, 0.
New Bedford. Massachusetts, 2003-04: U,S. Geological Survey Scientific Investigations Report 2005-5184,27 p, [Mndified from Tables 2 and 4],
1 Particle size is representative of PMIO ;:ltI
0
0
Heavy metals such as lead, zinc, other metals and polycyclic aromatic 0.
hydrocarbons (PARs) from vehicle traffic bind onto sediments and in :IE
0
turn are carried off the roadway surface as runoff. Nutrients such as '<
phosphorus and nitrogen from vegetation (grass-clippings, leaves, and ...
twigs), lawn fertilizer, and pet waste can wash off adjacent property into c:
::J
the roadway gutter line. n
-
When the runoff enters a receiving water, turbidity results - decreasing 0
water transparency and nutrients can cause algae blooms. Coarse sands, ::J
gravel, vegetative debris and trash create detention pond sediment deltas
at storm sewer outlets and loss of water depth. Sediment must be
removed periodically from ponds, lakes and drainage systems.
Local Road Research Board: February 2008 Page 13 of 18
Implementing a Street Sweeping Best Practice 'Jr
Reasons for Sweeping ~~~
Sweeper sediment pick-up efficiency Di7
There are major differences in the ability of street sweepers to pick-up ~
"tl
sediment from roadway surfaces. This important street sweeper .
capability should be well understood when sweeping is conducted for 0
sediment removal and pollutant loading reduction. Table 4 depicts <
removal efficiencies for various sediment particles sizes with respect to (I)
""
mechanical versus vacuum sweepers. <
(I)
Table 4: =E
Roadway Soil, Particle Size and Sweeper Removal Efficiencies -I
'<
"0
(I)
'"
0
-
V)
=E
(I)
Gravel 2.0 (I)
"0
Range Average Range Average (I)
Medium to very ""
0.25 - 2.0 60 - 79%1 69%1 n/al n/al '"
coarse sand 9 - 40%2 21%2 31- 94%2 71%2
Very fine to fine 0.050 - 0.250
sand
I Pitt, Robert, Bannerman, R. and Sutherland, R. 2004. The Role of Street Oeaning in Stormwater Management. Paper presented at Water World and Environmental Resources Conference
2004, Enwonmental and Warer Resources lnstiture of the American Society of Civll Engineers, Salt Lake City, Utah. May 27 - June 1,2004, Table 1.
1 Breault, RF., Smith, KP., and Sorenson, JR., 2005. Residential street-dirt accumulation rates and chemical composi-,tion, and removal efficiencies by mechanical~ and vacuum-type
sweepers, New Bedford, Massachusetts, 2003-04: U.S. Geological Survey Scientific Investigations Report 2005-5184,27 p., Table 6.
.1 Particle size is representative of PM10 V)
Conclusion: =E
(I)
/I)
Two characteristics are clearly evident in these studies and others. First, "0
mechanical broom sweepers are good at removing coarse sediment, but :::I
poor at removing fines (silt, clay and PMlO). In addition, removing the <0
course sediment causes the remaining fine sediment to be easily washed 0
:::I
off the roadway surface. Second, vacuum and regenerative-air (not Q.
shown here) sweepers have a greater capability to remove both coarse ;;ICI
and fine sediments. 0
0
Thus, if water quality is an important street sweeping outcome, using a Q.
=E
vacuum or regenerative-air sweeper would be the best option as they 0
both have capability to remove both coarse and fme sediments. -<
"'1'1
c:
:::I
0
-
0
:::I
Local Road Research Board: February 2008 Page 14 of 18
Implementing a Street Sweeping Best Practice 'Jt
Reasons for Sweeping ~~~
Regulatory '"
Street sweeping can be a valuable BMP for compliance with stormwater ~
."
permits issued by the Minnesota Pollution Control Agency (MPCA). .
The three pertinent general permits are as follows: 0
1. Multi-Sector Industrial Permit <
/l)
...
2. Municipal Separate Storm Sewer System (MS4) Permit <
/l)
3. Construction Activity Permit ~
Each of these permits requires preparation of a Stormwater Pollution -I
Prevention Plan (SWPPP) by the permit holder that may spell-out street -<
sweeping as a BMP to be implemented. In the metropolitan areas of '0
/l)
Minnesota, Local Water Management Plans (LWMP) are prepared by '"
local governments in conjunction with watershed plans. The LWMPs 0
-
often identify street sweeping as a water quality improvement operation ~
by the local governments. ~
/l)
Statewide, the MPCA identifies water bodies in violation of water /l)
quality standards and as such they become listed following the '0
/l)
procedures of Section 303(d) of the Clean Water Act. With a water body ...
'"
listing, a Total Maximum Daily Load (TMDL) study is undertaken for
the water body laying out an implementation plan requiring reductions
in pollutant loading. If a water body violates the turbidity standard, a
BMP requiring increased street sweeping frequencies could be one of a
suite of actions to achieve the turbidity water quality standard.
Street sweeping can be implemented as a stand alone BMP or in
conjunction with other BMPs. The latter is called a BMP treatment train.
The flow chart below illustrates the treatment train.
Figure 1:
BMP Treatment Train
Hydrodynamic ~
Device % Removal Wet pond ~
--... % removal Receiving /l)
water quality /l)
street sweeping --... "0
% removal --- :::s
(0
0
:::s
Cl.
;::g
0
The treatment train concept in stormwater management is based upon 0
the operation of a wastewater treatment facility. Pollutant removal is Cl.
~
enhanced (solids and dissolved substances) as the wastewater or the 0
above example stormwater moves through the system. In addition to the -<
enhanced system treatment capability, the treatment train can be .."
c:
implemented to prolong maintenance cycles, thus reducing cost long- :::s
term. For example, street sweeping removes coarse and fine sands 0
-
depending on equipment type, which in turn prolongs the maintenance 0
cycle of the downstream devices (hydrodynamic devices and wet :::s
ponds). Maintenance of the latter devices can be a very costly and time
consuming process.
Thus, street sweeping fits into the overall view of BMP and is an
important part of the tool box for improving water quality as well as
conducting optimal maintenance operations.
Local Road Research Board: February 2008 Page 15 of 18
Implementing a street Sweeping Best Practice 'l
Sweeping and Roadway Function lRRD
1IW..t)
The maintenance practice of street sweeping is often conducted in a manner reflecting roadway function or design. l:lI:I
Roadways are designed and built to serve two functions: provide access to property and to get from one place to ~
another. Roadway design considers both functions to varying degrees: where property access is a priority, slower ."
speeds and lower traffic volumes are assumed. Thus, residential areas have standard street widths, slower speeds and .
many property access points. Where mobility is primary, higher speeds and greater traffic volume dictate the design. 0
Traversing and connecting various land use areas are arterials (minor and principal) which have wider street widths, <
II>
higher speeds and less property accesses. """
<
Parking lots, whether public or private, provide their own unique design challenges because street sweeping II>
equipment used for roadways does not operate as efficiently in such facilities. Similarly, central business districts or ~
"downtowns" present a different challenge for street sweeping due to vehicular parking obstructing efficient -I
operations. '<
Thus, understanding the roadway system function and design along with associated facilities is important for "
IJ)
conducting street sweeping in an efficient manner. (,II
0
-
Roadway Owner / Function VI
~
IJ)
In Minnesota, there are four generally accepted functional roadway classifications. The following table depicts the IJ)
"
classifications along with general traffic volumes and speeds associated with each. The State (Minnesota Department IJ)
of Transportation) and local governments (counties, cities and towns) have ownership and maintenance responsibility ...
(,II
for the respective roadways as shown below.
Table 5: :;0
IJ)
Roadway Functional Classes and Responsible Governments 0
(,II
0
:::J
(,II
-
0
...
VI
~
II>
/I)
"
:::J
10
The amount of pollutant load is associated with roadway functional classification. High traffic volume roadways
(principal and minor arterial) translate into greater potential deposition of pollutants and materials associated with
vehicular movement [brake linings (antimony, copper, zinc), tire wear (cadmium, hydrocarbons, zinc) and of course
the loss of vehicle parts from wear and tear]. Lower traffic volume roadways (collector and local streets) potentially
reflect lower pollutant loads associated with litter (leaves, grass clippings, twigs and branches). Pollutant loads from
litter sources is seasonal in nature (fall and spring) with vegetation growth and die-off being greater within residential
neighborhoods with mature vegetation versus newer subdivisions. Surrounding land use is also a contributor to
pollutant loads and most often is associated with minor arterials and collector streets traversing through commercial
and industrial areas.
Street sweeping frequency should reflect roadway functional classification, in part. Traditionally in Minnesota, street
sweeping is performed twice per year (spring and fall) by most governments (state, county and local). Exceptions to
this generalization are central business districts (CBDs) and a few local governments which conduct more intensive
operations. The following table shows street sweeping frequency for various roadway and land use types undertaken
by approximately 40 local governments in Minnesota versus approximately 50 local governments across the United
States and Canada (www.rwmwd.org)in 2005.
Local Road Research Board: February 2008 Page 1 6 of 18
Implementing a street Sweeping Best Practice ~
Sweeping and Roadway Function ~!t~~
Table 6: Ii:J:l
Street Sweeping Frequency for Roadway and land Use Areas1 s:
"'Cl
.
0
<
(b
...
<
(b
~
-l
'<
"tI
(b
lit
0
-
VI
'Schilling, J.G. 2005. Street Sweeping - Report No.2, Survey Questionnaire Results and Conclusions. Prepared for Ramsey-Washington Metro ~
(b
Watershed District (http://www.rwmwd.org)LittleCanada,Minnesota55117 (b
"tI
(b
Summary: ...
en
. A majority (58 - 72%) of Minnesota survey respondents swept arterial - residential streets and commercial /
::atl
industrial areas twice per year. (b
0
. A super majority (66 - 76%) of the U.S. and Canadian respondents swept arterial - residential streets and lit
0
commercial / industrial areas from 3 - 26 times per year. ::J
lit
. Residential streets are less likely to be swept on a frequent basis by either group of survey respondents. -
0
...
Urban V5. Rural VI
~
(b
Street sweeping is most frequently practiced on urban roadway sections. As shown in Figure 2 below, street sweeping (b
is conducted primarily within the attached roadway bike path (5-foot section) and gutter area along the curb line (1 "tI
::J
- 1.5 foot). While the traffic lanes may also be swept, particularly once or twice on a seasonal basis, the majority of co
materials will be removed with the bike-path and curb line area.
Figure 2:
Street sweeping of bike path & curb line
... .---. -.,.
IJ 5 lQ 10
~ I
TYPICAL SECTION
Local Road Research Board: February 2008 Page 17 of 18
Implementing a street Sweeping Best Practice 'Jt
Sweeping and Roadway Function ~~~
Figure 3: QI:l
Street sweeping of inside curb lane s:
."
.
0
<
/I)
...
fO,'iQ If l!<A1l""""CE"', <
TO RAJLRCAD /I)
N^lW'''''''~j''''' -'\ \ :e
1 -I
10' '<
OITGl " , '" ~u "
~- , /I)
T'lPlCA1. SECTION en
1V.1%1' 11:'0"""
0
-
Street sweeping of rural roadway sections is less likely primarily due to design considerations. In general, a rural ""
:e
roadway section does not have a curb line (curb and gutter) adjacent and supporting the traffic pavement surface. The /I)
exception may occur on inside traffic lanes where turn lanes, landscaping and/or lighting may be included in /I)
"
urbanized or transition areas. As shown in Figure 3 above, street sweeping may be implemented in such roadway /I)
areas. Otherwise, street sweeping of rural roadway sections would likely not be necessary on a regular basis primarily ...
....
due to materials being blown or washed-off the driving surface onto the shoulder and/or deposited into the adjacent
drainage ditch. ;::0
/I)
0
Green Pavements en
0
::s
en
Green paving systems allow infiltration of Porous Concrete and Asphalt -
stormwater while providing a stable load-bearing 0
...
surface for parking, walking and driving. These ""
systems contain void spaces to provide :e
infiltration of runoff into their underlying /I)
/I)
engineered porous materials and then into native "
soils. Porous paving systems can preserve natural ::s
drainage patterns, enhance groundwater recharge (Q
and soil moisture, and can help establish and
maintain roadside vegetation. Although a good
substitute for conventional concrete and asphalt,
porous paving systems are typically not suitable
for medium and high traffic volume applications. Porous Concrete - low volume Porous Asphalt - parking lot
However, considerable research is underway residential street
investigating the use of porous pavement for all Permeable Pavers
roadway applications.
There are several different types of porous paving
systems, which are referred to here as 'porous
concrete and asphalt' , and 'permeable pavers' .
Maintenance Consideration
Both porous pavements and permeable pavers
require sweeping; however, because of their
inherent designs they require special care when
sweeping. This includes not forcing materials
into the "pores" of porous pavements or Concrete block pavers Brick pavers
removing the filler materials from pavers.
Currently there is not a sweeper that efficiently
addresses these pavements. If using one of the
sweepers listed in the "Types of Sweepers" sheet,
check with the manufacture on how to best use on
these pavements.
local Road Research Board: February 2008 Page 18 of 18
City of Shakopee
SIDEWALK/TRAIL INSPECTION. REPLACEMENT & MAINTENANCE POLICY
INTRODUCTION
The City of Shakopee, as of 2008, has approximately 75 miles sidewalks and 50 miles of trails.
City sidewalks/trails may vary in age and in quality of The City recognizes that some
conditions can create unreasonable hazards for users, but not every condition or
irregularity in the surface of the sidewalk/trail rises
This policy is to provide uniform criteria for and maintenance to
ensure safe walking and bicycling throughout in the best interest
of residents to provide uniform criteria in order to in a
fiscally responsible manner. This the
in order to accomplish this goal.
1. program to inventory
into three zones and each year a
to zonal repairs, a list of sidewalk/trail
shall also be repaired, whether in the zone
which sidewalks/trails are defective and in
be given to areas of high pedestrian volume
schools, recreation facilities, major commercial
1000 vehicles per day. The following criteria shall be
defective sidewalks and trails:
a. over %" identified during inspections have the highest priority for
budget, staffing and time constraints the City shall have these
identified repaired or replaced during the next repair project.
b. Vertical deflections between W' and %" identified during inspections are reviewed for
inclusion in future repair projects. These locations shall be included using interim repair
procedures.
c. Vertical deflections of less than W' will not generally be included in inspection reports
unless there is a potential for exceeding these criteria in the near future.
d. Horizontal deflections, spalled, cracked or sidewalks and trails with other hazards will be
analyzed on a case by case basis.
e. Interim repair procedures such as grinding, bituminous patching, mud/sand jacking, etc.
may be used in any situation to improve the safety of the sidewalk/trail before being
repaired. These interim repairs are prioritized based on available resources which
include staff time, funding, etc.
f. Trail maintenance shall consist of sealcoating, crack-sealing, patching and bituminous
over-lays.
SIDEWALK REMOVAL
Sidewalks in disrepair that do not connect to other and are not on routes identified
by the City may be removed and the right-of-way restored
FUNDING FOR SIDEWALK/TRAIL REPAIR OR
1. jointly funded, as per
and 30% by the
street. If it is
funded by the
City.
2. Removal, Maintenance of sidewalk removal,
maintenance be paid for in the
a. at the cost of the City.
replacement or repair of single
the cost of assessing is determined to be too
the City, which maintains the right to assess
for safety reasons, which exceed 33% of the
adjacent property, may be assessed to the property
repair or replacement.
c. sidewalks, rough grading the area, and providing topsoil and seed
of the City. The cost of completing the restoration in the
turf is generally the property owners.
d. If the that the sidewalk was damaged through activities or negligence
by the adjacent property owner; the entire cost of repairs will be billed to the adjacent
property owner. Any unpaid bills will be assessed to the property.
SNOW REMOVAL
City employees will be responsible for removing snow from sidewalks that abut City-owned buildings or
parking lots. Adjacent property owners, including other public entities, are responsible for removing
snow from sidewalks adjacent to their property (see City ordinance Sec.7.04, Subd. 1). There are certain
sidewalks identified by the City which may receive some snow removal services from City staff and
equipment. These services are provided at the City's discretion and do not relieve property owners of
their responsibilities.
REVIEW AND MODIFICATION OF POLICY
The City Council may modify or clarify this policy at any time. . Where the City Council has delegated
responsibility or authority to any City official for development or implementation of any portion of this
policy, that official shall have full authority to modify that portion policy at any time.
REVIEW OF POLICY
The Public Works Department will keep on file regarding this policy.
The policy will be reviewed periodically. Any complaints since the
last review and any other factors affecting the
EFFECTIVE DATE OF POLICY
This policy shall be policy shall be effective on
the date said
STORM DRAINAGE SYSTEM MAINTENANCE POLICY
FOR THE CITY OF SHAKOPEE
DRAFT
I. Purpose
The purpose of this policy is to provide the City of Shakopee's procedures for storm drainage
system inspection and maintenance. The City believes it is in the best interest of the residents
for the City to assume the basic responsibility of inspecting and maintaining its public storm
drainage system. Reasonable inspection and maintenance is necessary for the protection of
property, vehicle and pedestrian safety, water quality issues, environmental concerns and to
comply with requirements set forth by the City's Comprehensive Surface Water Resource
Management Plan and its storm water permit with the Minnesota Pollution Control Agency
(MPCA). The City will provide these services in a cost-effective manner, keeping in mind
safety, budget, personnel and environmental concerns. The City will use its own employees,
equipment and/or private contractors to provide this service. Completion dates are dependent
upon weather conditions, personnel and equipment availability. The Public Works Director,
the Public Works Superintendent or their assigns will be responsible for scheduling of
personnel and equipment.
II. Operations
1. Storm Water Basin Inspection/Maintenance. It should be noted this section is intended to
encompass wetlands since they perform in a comparable manner to storm water basins.
Storm water basin inspection and maintenance will begin in earnest when weather
conditions allow, usually mid-March. The City's goal is to inspect a minimum of 20% of
its storm water basins each year, resulting in all of them being inspected in a five (5) year
period. However, several storm water basins will be inspected on a more frequent basis.
Priority will be given to those as they appear on the most recent version of the City's storm
drainage hotspot map and as determined by the Public Works Director. Storm water basin
maintenance will be scheduled based on a low, medium or high priority ranking and as
determined by the Public Works Director. See the Procedures section for details
concerning inspection activities, inspection frequencies, maintenance activities and
maintenance priority rankings.
2. Infiltration Area Inspection/Maintenance. Infiltration areas include storm water basins with
an infiltration component, vegetated filterlbuffer strips, raingardens and rock filter trenches.
Infiltration area inspection and maintenance will begin in earnest when weather conditions
allow, usually mid-March. The City's goal is to inspect a minimum of 20% of its
infiltration areas each year, resulting in all of them being inspected in a five (5) year period.
However, several infiltration areas will be inspected on a more frequent basis. Priority will
be given to those as they appear on the most recent version of the City's storm drainage
hotspot map and as determined by the Public Works Director. Infiltration area maintenance
will be scheduled based on a low, medium or high priority ranking and as determined by
the Public Works Director. See the Procedures section for details concerning inspection
activities, inspection frequencies, maintenance activities and maintenance priority rankings.
3. Improved Ditch Inspection/Maintenance. Improved ditch inspection and maintenance will
begin in earnest when weather conditions allow, usually mid-March. The City's goal is to
inspect its ditches on an as needed basis. However, the Upper Valley Drainage Ditch will
be inspected on a more frequent basis. Priority will be given to those as they appear on the
most recent version of the City's storm drainage hotspot map and as determined by the
Public Works Director. Improved ditch maintenance will be scheduled based on a low,
medium or high priority ranking and as determined by the Public Works Director. See the
Procedures section for details concerning inspection activities, inspection frequencies,
maintenance activities and maintenance priority rankings.
4. Storm Sewer Inspection/Maintenance. It should be noted this section is intended to cover
manholes, catch basins, outfalls, inlets/outlets, lids, grates, pipe, swales and spillways.
Storm sewer inspection and maintenance will begin in earnest when weather conditions
allow, usually mid-March. The City's goal is to inspect a minimum of 20% of its outfalls
each year, resulting in all of them being inspected in a five (5) year period. An outfall is
defined as an outlet leaving the City's storm drainage system in a distinct conveyance such
as a pipe. The remainder of the storm sewer components will be inspected on an as needed
basis. However, several areas will be inspected on a more frequent basis. Priority will be
given to areas draining directly into higher priority water bodies such as the downtown
business district, old urban Shakopee, industrial zones, those as they appear on the most
recent version of the City's storm drainage hotspot map and as determined by the Public
Works Director. Storm sewer maintenance will be scheduled based on a low, medium or
high priority ranking and as determined by the Public Works Director. See the Procedures
section for details concerning inspection activities, inspection frequencies, maintenance
activities and maintenance priority rankings.
5. High Priority Inspection/Maintenance (Hotspots). In order to address areas requiring
additional attention, the City has developed a storm drainage hotspot map to supplement its
comprehensive storm drainage system map. Please refer to this map, which is available at
the Public Works Department and Engineering Department offices, for high priority
inspection locations and their associated frequencies.
6. Subdivision Storm Drainage System Inspection/Maintenance. Prior to the City inspecting,
approving and accepting a storm drainage system associated with the subdivision of land,
the inspection and maintenance activities are the responsibility of the developer, contractor
and/or property owner. Except in case of emergencies, deficiencies need to be corrected
within twenty-four (24) hours of receiving instructions and notice from the Public Works
Director, City Engineer and/or Building Official or their assigns. If the developer,
contractor and/or property owner fail to perform this work within the time specified or in
the case of an emergency, the City reserves the right to perform the work and charge the
associated cost to the appropriate party.
7. Storm drainage system inspection and maintenance within County road right-of-way is the
responsibility of the Scott County Highway Department. Storm drainage system inspection
and maintenance within State right-of-way is the responsibility of the Minnesota
Department of Transportation (MNDoT). The City may assist in their inspection and
maintenance under emergency conditions or cooperative maintenance agreements.
8. Storm drainage systems considered to be privately owned will not be inspected or
maintained by the City unless there is the potential of damage to property or if there is a
safety concern.
9. Yard swales will not be maintained, re-graded or re-established by the City unless there the
potential of damage to property or if there is a safety concern. The City reserves the right
to perform the work and charge the associated cost to the appropriate party.
10. The City is not responsible for the general maintenance of roadside ditches. However, if a
ditch is not draining properly, the City will excavate the area to re-establish positive
drainage.
11. The City will replace driveway culverts that are deteriorated or not allowing positive
drainage, but will not replace those associated with a property owner's driveway
maintenance or replacement.
12. For the restoration associated with large scale maintenance projects in areas where the City
and adjacent property owners desire to minimize the amount of mowing, the City will
investigate the feasibility of buffer/filter strips, wetland vegetation plantings and prairie
grass plantings.
13. Citizen requests for storm drainage system inspection and maintenance will be evaluated by
the Public Works Director and/or the Public Works Superintendent and they will determine
the priority.
III. Procedure
1. Storm drainage system inspection and maintenance will primarily take place from mid-
March to mid-October. However, as weather conditions allow additional inspection and
maintenance will take place. Inspections such as measuring sediment depth in storm water
basins during the winter months may be easier through the ice than in open water during the
summer months. The City will use its own employees, equipment and/or private
contractors to complete the inspections and maintenance.
2. Priorities/Frequencies. The City has developed a comprehensive storm drainage system
map. This map shows the City's storm water basins, wetlands, infiltration areas, manholes,
catch basins, outfalls, inlets/outlets, overflow structures and pipe. Additionally, the City
has developed a storm drainage hotspot map which shows areas requiring additional
attention during significant rainfall/runoff events. These maps, the City's GIS System and
a comprehensive list of inspection and maintenance activities provide the user tools to
adequately perform and record inspections, schedule and perform maintenance activities
and generate valuable reports. See the activities, frequencies and priorities below:
INSERT INSPECTION & MAINTENANCE TABLES ONCE APPROVED
3. Weather Conditions. Inspection and maintenance will be conducted when weather
conditions permit. Factors that may delay these activities may include temperatures below
thirty-two (32) degrees Fahrenheit, wind, rain, snow and frozen storm drainage systems.
4. Work Schedule. Inspection and maintenance is performed in conjunction with and can be
impacted by other maintenance operations. Inspection and maintenance will typically be
conducted during a regular eight (8) hour workday. Extended workdays and shift changes
may be necessary for spring runoff events and emergency conditions to provide maximum
efficiency. For safety reasons, no operator will work more than a twelve (12) hour shift in
any twenty-four (24) hour period.
5. Safety Concerns. Unexpected ponding water can create a dangerous condition for vehicles,
motorcyclists, bicyclists, pedestrians and property. It is not practical to sign all areas for
potentially dangerous conditions. During such events, warning signs indicating a hazard
will be placed in the vicinity and other areas as deemed necessary by the Public Works
Director. These signs will remain in place until the situation has subsided.
6. Training. The City will provide training and information on a regular basis to employees
involved in the inspection and maintenance of the City's storm drainage system. At a
minimum, training and information will cover:
. Inspection/maintenance procedures
. Reasons for inspection/maintenance
. Erosion and sediment control inspection/maintenance practices
. Daily, intermediate and long-term preventative inspection/maintenance
. Major/minor repairs
7. Complaints. Complaints concerning the storm drainage system will be taken during normal
working hours and after normal working hours by those designated as emergency contacts.
Problems requiring immediate attention will be handled on a priority basis as determined by
the Public Works Director. The City will document all complaints and upgrade this policy
as necessary while giving consideration to the constraints of available resources.
8. Documentation. The City will docUment all of its inspection, maintenance, complaint and
emergency responses. Forms will be developed clearly outlining all inspection activities
associated with each component of the storm drainage system. All findings, determinations
and courses of action will be properly entered into the City's GIS system. The City will
also document circumstances that limit its ability to comply with this policy. The City will
also develop a list of storm drainage system components that appear to be functioning well
and prove to be beneficial and those that do not appear to be doing so. These records will
be kept in accordance with the City's record retention schedule.
9. This policy is a guide for City staff and residents of the community. The City
Administrator, the Public Works Director, the Police Chief and the Fire Chief may deviate
from this policy if they feel it is in the best interest of the City while considering unusual
circumstances and emergency conditions.
1. Is there any erosion associated with: 1. Detennine the cause of erosion (clogged
outlet, inade uate stabilization, etc.
a. excavate to solid soil, repack with clay,
dress with topsoil, reestablish vegetative
a. slopes cover. For recurring problems, detennine
if erosion control blanket or pennanent
turf reinforcement is re uired.
b. ri ra areas b. lace lar er/more ri ra
c. arons/inlets c. lace new ri ra
d. headwalls/endwalls d. extend wall or repack soils and
reestablish ve etative cover
e. spillways and/or outlet structures e. place new riprap and/or reestablish
ve etative cover
f. other f. as a licable
2. Are there obstructions/debris blocking the 2. Remove obstructions/debris and dispose
emer enc overflow ancl/or outlet of offsite
3. Are there obstructions/debris blocking the 3. Remove obstructions/debris and dispose
trash racks of offsite
4. Is there debris on the basin slopes or in 4. Remove obstructions/debris and dispose
the water of offsite
Are there animal burrows/nests impacting Repack with clay, dress with topsoil,
5. the basin slopes causing the basin to not 5. reestablish vegetative cover and remove
function ro erl nests and dis ose of offsite
6. Is there any sign of vandalism requiring 6. As applicable
re air
7. Are there an ublic hazards 7. Asa licable
Has the water level not returned to the Detennine the cause (outlet structure or
8. nonnal elevation within 48 hours (wet 8. downstream system is clogged, etc) and
basins take the a ro 'ate action
9. Is the water level lower than the nonnal 9. Detennine the cause (slow leak in liner,
elevation wet basins etc. and take the a ro riate action
Detennine the cause (excessive sediment,
10. Has the water not completely drained 10. excessive compaction, outlet structure or
within 48 hours (dry basins) downstream system is clogged, etc.) and
take a ro riate action
11. Is there any undesirable vegetation 11. Remove and dispose of offsite
owth, such as:
a. volunteer trees and/or shrubs a. remove by hand, carefully mowing or
a lication of a ro riate herbicide
b. invasive species on basin slopes b. remove by hand or application of
a ro riate herbicide
c. carefully mow applicable vegetation
c. excessive height (ensure the basin has not been mowed
more than 2 times this season
d. invasive aquatic species d. remove by hand or application of
a ro riate herbicide
Are there any excessive spots barren of Reestablish vegetative cover (dress with
12. vegetation on the basin slopes/bottom 12. topsoil, seed, sod, install plants and/or
erosion control, etc.
13. Are desired plant species showing signs 13.
of stress or disease on:
a. basin slopes or buffers a. detennine the cause and take the
a ro riate action
b. basin edges (wet basins) b. detennine the cause and take the
a ro riate action
14. For inlet and outlet structures, are there 14.
an :
a. remove all deteriorated concrete, dirt
a. cracks greater than 1/8" in concrete and bond inhibiting material from the
components failed area and inject with applicable
crack sealant
b. monitor
c. major spalling of concrete components c. clean rebar, remove loose concrete,
(rebar exposed) apply bonding agent and patch with
a licable material
d. determine the cause, note the type of
d. joint failures joint and if groundwater seepage is
resent and use a ro riate
e. determine the cause, clean the corroded
e. corroded metal components area and consider cold galvanization or
more extensive 0 tions re lacement .
f. dents causing the structure and basin to f. repair to proper capacity and ensure
not function ro erl structura1inte i is maintained
g. are pipes and/or structures blocked or is g. remove debris/sediment by handwork
there excessive sediment build-up in front or jetting equipment to clean upstream
of the inlet, im edin water flow s stem
h. backfill eroded areas, repair
h. is there erosion or scour holes forming aprons/inlets, add riprap as necessary and
around aprons/inlets reestablish vegetative cover (match seed
mix to intended desi
i. are any structures misaligned or have i. reconstruct/modify as necessary,
any of them settled reestablish vegetation (match seed mix to
intended desi
j. reattach aprons/inlets, tie last 3 joints,
j. are any aprons/inlets disconnected or compact soil beneath, add riprap in front
becoming disconnected and around sides (for severe problems,
consider more extensive 0 tions
k. is the riprap degraded and not k. remove degraded riprap and add new
adequately dissipating energy riprap in front and around sides of
arons/inlets
15. 15.
a.re lace
b. secure
Are safety features present and Ensure trash guards, fencing, grates, etc.
16. functioning 16. are present, clear of debris and properly
secured
Measure basin depth to determine if Determine cause, draw down basin,
17. sediment is significantly reducing storage 17. excavate sediment and properly dispose of
offsite testin ma be re uired
Are basins or sediment forebays greater Determine cause, remove sediment and
18. than 50% full of sediment 18. properly dispose of offsite (testing may be
re uired
Is there excessive sediment build-up Determine cause, remove sediment and
19. impeding water flow: 19. properly dispose of offsite (testing may be
re uired
a. remove sediment from in and around
a. near aprons/inlets aprons/inlets and properly dispose of
offsite
b. other locations b. Remove sediment and properly dispose
of offsite testin ma be re uired
Will sediment build-up negatively impact Draw down basin, excavate sediment and
20. 20. properly dispose of offsite (testing may be
vegetation health re uired
Detennine cause of erosion, repack with
clay, dress with topsoil, reestablish
21. Is there erosion or gullying of the basin 21. vegetative cover. For recurring problems,
slopes/bottom detennine if erosion control blanket,
permanent turf reinforcement or
additional riprap at the aprons/inlets is
Are there any irregularities indicating Discuss with supervisor to detennine
22. upstream problems 22. cause and perfonn a follow up
investi ation
Are there any signs of illicit discharges Discuss with supervisor to detennine
23. (dry weather flow, unusual colors, stains, 23. cause and perfonn a follow up
odors, etc. investi ation
24. Are there any obstructions to the 24. Discuss with supervisor to determine a
maintenance access oint s course of action
25. Does the emergency overflow appear to 25. Discuss with supervisor to detennine a
be obstructed course of action
26. Are there any encroachments in the basin 26. Discuss with supervisor to detennine a
course of action
Stonn water basins considered to be privately owned will not be maintained by the City unless there is the potential of damage
to ro e or if there is a safe concern.
Most of the above activities apply to wetlands as well. However, prior to work within a wetland or if there is a question as to
whether or not the basin is a wetland, lease contact our su ervisor as ermits ma be re uired.
Pro erl enter all findin s, detenninations and courses of action into the GIS s stem.
lement the storm water basin ins ectionlmaintenance activities)
For barren spots and/or dead vegetation,
ensure water levels return to the normal
1. Are there any excessive spots barren of 1. elevation within 48 hours of a significant
vegetation on the basin slopes/bottom rainfall event. Determine a cause for
barren spots and reestablish vegetative
cover (match seed mix to intended design)
Draw down basin, excavate sediment in a
manner that will not compact the soil
2. Does sediment depth exceed 2" in depth 2. (skidsteer) and properly dispose of offsite
over more than 25% of the basin (testing may be required) and reestablish
vegetative cover (match seed mix to
intended design
Has the water level not returned to the Determine the cause (excessive sediment,
3. normal elevation within 48 hours (wet outlet structure/downstream
systern/underdrain system is clogged, etc)
basins) and take the a ro riate action
4. Determine the cause (slow leak in liner,
etc. and take the a ro riate action
Determine the cause (excessive sediment,
5. Has the water not completely drained excessive compaction, outlet structure or
within 48 hours (dry basins) downstream system is clogged, etc.) and
take a ro riate action
Do plant species in the bottom appear to This is an indication the basin is not
6. 6. draining properly. Determine the cause
be transitioning to wetland types and take the a ro riate action.
Determine the cause (reference the above
Is sediment visible in the items and those in the storm water basin
7. cleanouts/inspection manholes and, if so, 7. section) and carefully remove sediment
does the sediment appear to restrict flow with jetting equipment to clean upstream
system
Is excessive compaction evident in the Consider aerating/de-thatching applicable
8. basin slopes/bottom 8. areas ( this activity should be performed
eve 2-3 ears
Ve~etated Filter/Buffer Strips & Raingardens
1. Are there an roblems with: 1.
a. carefully mow, prune and weed as
a. weeds or volunteer woody vegetation needed to maintain appearance and
functionali
b. weeds in mulched areas b. carefully remove by hand or application
ofa ro riate herbicide
c. carefully mow to a height between 4-9"
c. vegetation height (ensure the area has not been mowed more
than 1 time this season
d. carefully prune to maintain appearance
d. signs of diseased vegetation and remove any dead or severely diseased
ve etation
e. determine a cause and carefully remove
e. sedimentation sediment by hand as needed to maintain
draina e and ve etation
f. determine a cause for barren spots and
f. erosion or gullying reestablish vegetative cover (match seed
mix to intended design) or mulch where
a ro riate
Rock Filter Trenches
Is there a crust or layer of fine sediment Determine a cause (poorly functioning
filter fabric, etc.), remove rock from
1. on the surface of the trench, below the 1. trench, wash or install new rock and
vegetative cover or around the rock reestablish ve etative cover
2. Is the runoff channelized prior to entering 2. Determine a cause and take the
the s stem a ro riate action
Infiltration areas considered to be privately owned will not be inspected and maintained by the City unless there is the
otential of dama e to ro e or if there is a safe concern.
Pro erl enter all findin s, determinations and courses of action into the GIS s stem.
1. Is there any erosion associated with: 1. Determine the cause of erosion (clogged
culverts, inade uate stabilization, etc.
a. excavate to solid soil, repack with clay,
dress with topsoil, reestablish vegetative
a. slopes cover. For recurring problems, determine
if erosion control blanket or permanent
turf reinforcement is re uired.
b. ri ra areas b. lace lar er/more ri ra
c. a rons/inlets c. lace new ri ra
d. headwalls/endwalls d. extend wall or repack soils and
reestablish ve etative cover
e. spillways, outlet structures, weirs and e. place new riprap and/or reestablish
culverts ve etative cover
f. other f. as a licable
2. Are there obstructions/debris blocking the 2. Remove obstructions/debris and dispose
weirs or trash racks of offsite
3. Is there debris on the slopes 3. Remove obstructions/debris and dispose
of offsite
Repack with clay, dress with topsoil,
4. 4. reestablish vegetative cover and remove
nests and dis ose of offsite
5. 5. As applicable
6. 6. Asa licable
7. 7. Remove and dispose of offsite
a. volunteer trees and/or shrubs a. remove by hand, carefully mowing or
a lication of a ro riate herbicide
b. invasive species b. remove by hand or application of
a ro riate herbicide
c. carefully mow applicable vegetation
c. excessive height (ensure the ditch has not been mowed
more than 2 times this season
Are there any excessive spots barren of Reestablish vegetative cover (dress with
8. vegetation in the ditch 8. topsoil, seed, sod, install plants and/or
erosion control, etc.
9. For aprons/inlets, headwalls/endwalls, 9.
weirs and culverts, are there an :
a. remove all deteriorated concrete, dirt
a. cracks greater than 1/8" in concrete and bond inhibiting material from the
components failed area and inject with applicable
crack sealant
b. monitor
c. major spalling of concrete components c. clean rebar, remove loose concrete,
(rebar exposed) apply bonding agent and patch with
a licable material
d. determine the cause, note the type of
d. joint failures joint and if groundwater seepage is
present and use appropriate
methods/materials to re air
e. determine the cause, clean the corroded
e. corroded metal components area and consider cold galvanization or
more extensive 0 tions re lacement .
f. dents causing the structure and basin to f. repair to proper capacity and ensure
not function ro ed structural inte i is maintained
g. is there excessive sediment/debris build g. determine cause and remove
up impeding water flow sediment/debris by handwork or jetting
e ui ment to clean u stream s stem
h. backfill eroded areas, repair
h. is there erosion or scour holes forming aprons/inlets, weirs, culverts, add riprap
around aprons/inlets as necessary and reestablish vegetative
cover (match seed mix to intended design)
i. are any structures misaligned or have i. reconstruct/modifY as necessary,
reestablish vegetation (match seed mix to
any of them settled intended desi
j. reattach aprons/inlets, tie last 3 joints,
j. are any aprons/inlets disconnected or compact soil beneath, add riprap in front
becoming disconnected and around sides (for severe problems,
consider more extensive 0 tions
k. is the riprap degraded and not k. remove degraded riprap and add new
adequately dissipating energy riprap in front and around sides of
a ons/inlets
Determine a cause (leakage around the
weir, cracking, noticeable damage to the
10. Does the weir appear to not be functioning 10. spillway improper construction, etc.),
properly repair concrete/metal components as
necessary. If spillway elevation appears
to be impacted, discuss with your
Are safety features present and Ensure trash guards, fencing, hand rails,
11. functioning 11. grates, etc. are present, clear of debris and
ro erl secured
Is there excessive sediment build-up Determine cause, remove sediment and
12. impeding water flow: 12. properly dispose of offsite (testing may be
re uired
a. near aprons/inlets, headwalls/endwalls, a. remove sediment from in and around
weirs and culverts and ro erl dis ose of offsite
b. other locations b. Remove sediment and properly dispose
of offsite testin ma be re uired
Do plant species in the ditch bottom This is an indication the ditch is not
13. 13. draining properly. Determine the cause
appear to be transitioning to wetland types and take the a ro riate action.
14. Will sediment build-up negatively impact 14. Remove sediment and properly dispose of
ve etation health offsite testin ma be r uired
Determine cause of erosion, repack with
clay, dress with topsoil, reestablish
15. Is there erosion or gullying of the ditch 15. vegetative cover. For recurring problems,
slopeslbottom determine if erosion control blanket,
permanent turf reinforcement or
additional ri rap at the a rons/inlets is
Are there any irregularities indicating Discuss with supervisor to determine
16. upstream problems 16. cause and perform a follow up
investi ation
Are there any signs of illicit discharges Discuss with supervisor to determine
17. (dry weather flow, unusual colors, stains, 17. cause and perform a follow up
odors, etc. investi ation
18. Are there any obstructions to the 18. Discuss with supervisor to determine a
maintenance access oint s course of action
19. Are there any encroachments in the ditch 19. Discuss with supervisor to determine a
course of action
Storm Sewer Appurtenances
(includes manholes, catch basins, outfalls, inlets/outlets, lids, ates,
1. Is there any erosion associated with: 1.
a. ri ra areas
b. arons/inlets/outlets
c. headwalls/endwalls
d. spillways and/or outlet structures
e. other
Are there obstructions/debris blocking the Remove obstructions/debris and dispose
2. emergency overflow and/or inlet/outlet 2. of offsite
structures
Are there animal burrows/nests impacting Repack with clay, dress with topsoil,
3. the appurtenance causing it to not 3. reestablish vegetative cover and remove
function ro erl nests and dis ose of offsite
4. Is there any sign of vandalism requiring 4. As applicable
re air
5. Are there an ublic hazards 5. Asa licable
6. Is there any undesirable vegetation 6. Remove and dispose of offsite
owth, such as:
a. volunteer trees and/or shrubs
b. invasive species
c. excessive hei ht
For manholes, catch basins, inlets/outlets,
7. lids, grates, pipe, spillways, etc., are there 7.
an :
a. remove all deteriorated concrete, dirt
a. cracks greater than 1/8" in concrete and bond inhibiting material from the
components failed area and inject with applicable
crack sealant
b. monitor
c. major spalling of concrete components c. clean rebar, remove loose concrete,
(rebar exposed) apply bonding agent and patch with
a licable material
d. determine the cause, note the type of
d. joint failures joint and if groundwater seepage is
present and use appropriate
methods/materials to re air
e. determine the cause, clean the corroded
e. corroded metal components area and consider cold galvanization or
more extensive options (replacement).
f. dents causing the appurtenance to not f. repair to proper capacity and ensure
function ro erl structural inte i is maintained
g. are appurtenances blocked or is there g. remove sediment/debris by handwork
excessive sediment build-up impeding or jetting equipment to clean upstream
water flow s stem
h. for sump manholes/catch basins, is h. remove sediment/debris by handwork
sediment/debris accumulating to a depth or jetting equipment to clean upstream
that ma cause it to not function ro erl s stem
Storm Sewer Appurtenances
(includes manholes, catch basins, outfalls, inlets/outlets, lids, grates,
i. backfill eroded areas, repair
i. is there erosion or scour holes forming appurtenance, add riprap as necessary and
reestablish vegetative cover (match seed
mix to intended desi
j. are any structures misaligned or have j. reconstruct/modify as necessary,
reestablish vegetation (match seed mix to
any ofthem settled intended desi
k. reattach aprons/inlets, tie last 3 joints,
compact soil beneath, add riprap in front
k. are any inlets/outlets or pipe and around sides (for severe problems,
disconnected or becoming disconnected consider more extensive options). For
pipe, apply bonding agent and patch with
a licable material.
1. is the riprap degraded and not 1. remove degraded riprap and add new
riprap in front and around sides of
adequately dissipating energy arons/inlets
m. are manhole lids or catch basin grates m. remove and replace as necessary
in oor condition
Are safety features present and Ensure trash guards, fencing, lids, grates,
8. 8. etc. are present, clear of debris and
fimctioning ro erl secured
Are there any irregularities indicating Discuss with supervisor to determine
9. 9. cause and perform a follow up
upstream problems investi ation
Are there any signs of illicit discharges Discuss with supervisor to determine
10. (dry weather flow, unusual colors, stains, 10. cause and perform a follow up
odors, etc. investi ation
11. Are there any obstructions to the 11. Discuss with supervisor to determine a
maintenance access oint s course of action
12. Does the emergency overflow appear to 12. Discuss with supervisor to determine a
be obstructed course of action
13. Are there any encroachments 13. Discuss with supervisor to determine a
course of action
Appurtenances considered to be privately owned will not be maintained by the City unless there is the potential of damage to
ro e or if there is a safe concern.
Pro erl enter all findin s, determinations and courses of action into the GIS s stem.
. - .
City Of Shakopee S-
Public-Works Department h i1- {'i ~ 0 Ij -f:::
2009 Storm Project List
Project Project Location Work to be done Man Equipment est. Time
Number Power Remarks
eInstall two 48" Str. and Bob Cat
80 LF of pipe 2 Dump Trucks 3 Days Must complete reseeding and
PW-05-08 I Repair pond washout West Tahpah Park Area. e Repair pond slopes by 4 Track-Hoe during 2008 some erosion control in spring
and pipe failure. regarding Mixer 1/2 day of2009
eClean bottom Hand Tools during 2009
eReseed and Erosion Control
eRemove old Rip-Rap Bob Cat
. Regard slopes around FES 2 Dump Trucks
I Repair washout area Upper Valley Ditch east .Clean pool area in front ofFES
PW-OI-09 around FES. side of County-I 5 e Fix bank and repair FES 4 Track-Hoe 2 Days
Mixer
.Place new Rip-Rap Hand Tools
.Reseed and Erosion Control
I Clean Ditch Upper Valley Ditch east eFix bank failure area Bob Cat
2 Dump Trucks
PW -02-09 2 Repair slope failure side of County-I 5 to eClean ditch bottom 3 Track-Hoe I Days
area Vierling Drive .Reseed and Erosion Control Hand Tools
. Remove dirt from inside
box-culvert
.Regard slopes around Bob Cat
I Repair washout area Upper Valley Ditch and box-culvert bridge 2 Dump Trucks
PW-03-09 around Box Bridge. Vierling Drive . Fix bank and repair culvert wall 5 Track-Hoe 3 Days
.Place new cable-Crete as Mixer
needed Hand Tools
. Build retaining wall
.Reseed and Erosion Control
Page 1 of 4 Pages 3/24/2009
. '-".
City Of Shakopee
Public-Works Department
2009 Storm Project List
Project Location Work to be done Man Equipment est. Time Remarks
Number Project Power
- Remove trees
_Remove old Rip-Rap Bob Cat
I Clean and repair eClean Pool area I Dump Truck
PW -04-09 Dakota Pond Area e Repair and re-slop around FES 2 I Day
washout area vic. FES Track-Hoe
and bank area Hand Tools
_Place new Rip-Rap
-Reseed and Erosion Control
-Remove 80 LF of curb, 400 SF
of Bit., 140 LF of trail
eInsta1l2 each CB, 35 LF of24" Bob Cat
RCP, 80 LF ofB-618 Curb, 3 Dump Trucks
Prairie Lane place 200 CY offill, 150 SF of Track-Hoe Need out side help to build
PW -05-09 I Repair washout Cul-De-Sac cable-Crete 7 Mixer 5 Days low-Flow bridge and Cul-De-
-Mill 3250 SF of street, Overlay Hand Tools Sac paving
3650 SF of street _Regard area, Paver
install 140 LF of 8 foot Bit. trail,
build one low flow bridge
eReseed and Erosion Control
eClean area
_Remove old Rip-Rap Bob Cat
I Fix slopes Upper Valley Ditch west e Repair slope and washout 2 Dump Trucks
PW -06-09 2 Replace Rip-Rap of Marschall Road _Place new Rip-Rap 3 Track-Hoe 2 Days
3 Repair Pipe _Clean and repair low-Flow pipe Mixer
and CB Hand Tools
eReseed and Erosion Control
Page 2 of 4 Pages 3/24/2009
. -.
City Of Shakopee
Public-Works Department
2009 Storm Project List
Project Project Location Work to be done Man Equipment est. Time
Number Power Remarks
. Remove dirt from inside pipe
. Remove trees and other bushes
. Regard slopes Bob Cat
- .Fix bank e Repair
I Repair washout area Upper Valley Ditch and culvert . Place 2 Dump Trucks
PW-07-09 around Storm System Hauer Trail new cable-Crete as needed 6 Track-Hoe 5 Days
pipe and FES. . Build retaining wall on two Mixer
sides Hand Tools
.Cable-Crete bottom area
eReseed and Erosion Control
.Clean ditch bottom
.Remove trees and other bushes Bob Cat
I Repair washout area Upper Valley Ditch e Regard slopes around 2 Dump Trucks
PW-08-09 around Storm System north of Eagle Creek culvert FES 5 Track-Hoe 3 Days
pipe and FES. Road e Backfill washout area Mixer
eCable-Crete bottom area Hand Tools
eReseed and Erosion Control
eClean pond Bob Cat Test pond before work starts
eRe-slop area
PW-09-09 I Clean Pond Roundhouse north of .Clean pipe 3 I Dump Truck I Days note: May need to address muck
Eagle Creek .Rip-Rap around FES Track-Hoe with special handling if test
eReseed and Erosion Control Hand Tools shows heavy-metals.
Page 3 of 4 Pages 3/24/2009
. .
City Of Shakopee
Public-Works Department
2009 Storm Project List
Project Project Location Work to be done Man Equipment est. Time Remarks
Number Power
eClean pond
eRe-slope north area
eClean and repair pipes and FES Bob Cat
from southeast side 2 Dump Trucks Test pond before work starts
PW-IO-09 I Clean Pond East view Area eInstall sump CB's 4 Track-Hoe 4 Days note: May need to address muck
2 Add control structure e Install FES, Pipe and MH for Mixer with special handling if test
control of water Hand Tools shows heavy-metals.
eRip-Rap around FES
eReseed and Erosion Control
eClean pond
eRe-slope area Bob Cat
e Build fore-bay area 3 Dump Trucks Test pond before work starts
PW-ll-09 I Clean Pond Meadows West (I st eClean and repair pipes and FES 7 Track-Hoe 7-9 Days note: May need to address muck
Add.) from east and south sides Mixer with special handling if test
eInstall two sump CB's Hand Tools shows heavy-metals.
eRip-Rap around FES
eReseed and Erosion Control
e Remove trees and other bushes
around FES
I Repair washout area e Regard slopes around Bob Cat
PW-I2-09 around Storm System Pheasant Run Area FES and pond 3 I Dump Truck 1 Day
pipe and FES. e Backfill washout area Hand Tools
eRip-Rap area around FES
eReseed and Erosion Control
Page 4 of 4 Pages 3/24/2009
_._---~---
'91~
lL ..... CITY OF SHAKOPEE
~ PUBLICWORKS DEPARTMENT
MARCH 24, 2009 City Council Workshop
I. G IS Update Report
II. Polices
.-....
< Street Sweeping
'c .
-....
-+-:> . Sidewalks / Trails
i: Tree Maintenance
--(:.) .
2: . Storm Drainage System Maintenance
lAj
v-.
w
~ III. Public Works Organizational Study for 2009
~
1-
t . Last Study done 2003
0
Q... Findings
.
~
VII . Recommendations
~
ID ~b ~
CL
\ / ~ n.""""~ 0 ~
-~
'.
,"- ~-~ ~---- --.~-' ---
n
LY CITY OF SHAKOPEE
PUBLIC WORKS DEPARTMENT
MARCH 24, 2009
I. GIS Update Report
. Overview
. Review 2008 Activities
. Examples of Output
. Overview of 2009 Work Plan
. Questions
I .
ly I
CITY OF SHAKOPEE
PUBLICWORKS DEPARTMENT
MARCH 24, 2009
II. Policies
. Street Sweepi ng
. Sidewalks / Trails
. Tree Maintenance
. Storm Drainage System Maintenance
I
i
I
!
I / CITY OF SHAKOPEE
PUBLICWORKS DEPARTMENT
MARCH 24, 2009
../ Street Sweeping 1;1:r;~ 'l<"<:,v".~;:;;:_ t-N:: ,<;'~?:.. "',=' ..~'~"'~~* ,;r;._,,:~_
". " , 'll\ ,.~ -,' L""" ."'.
@ Overview of Report l' {" .. ~ < ~ ',.nor;/. >-.':",':"-<<1 ",--'" _ " .
11 -#.... I '''' i!. ~~
... I'j
@ Policy
@ Equipment
r{
~~
r;; '"":lI1:::l
I[Z)I:I-:~;r.".,~~
----....... ..
I l/
I CITY OF SHAKOPEE
PUBLICWORKS DEPARTMENT
i MARCH 24, 2009
I
I
Description Minimum
Sweeping FreQuency
Arterial Streets (minor and principal) Nine (9) times per year
Collector Streets (minor and major) Nine (9) times per year
Local Streets Two (2) times per year
Commercial Zones Seven (7) times per year
Light Industrial Zones Six (6) times per year
I Heavy Industrial Zones Six (6) times per year
I Old Urban Shakopee Six (6) times per year
I Downtown Business District One (1) time per week
1
I Y CITY OF SHAKOPEE
I PUBLICWORKS DEPARTMENT
I MARCH 24,2009
I
I
I CITY OF SHAKOPEE
I PUBLIC WORKS
DEPARTMENT
I
STREET SWEEPII<G ~lAP
I FOR 2009
I ZONE-.
I SWr.F.I'I:\GS pF.n.\Hf.h:
i
I ZONE-2
6SWF.r.PI\'(;S PER.n:"R
I ZONE-3
I -I swu:rl:\GS 1'F.R.rt:AR
.
I'
I I ZOI'iE-4
t~., ) s\nr.r):\GS PER.Y[.\R
:-:1
ZOI'iE-5
U.:..' 2 SWHf'I.\GS PER.YEAR
....
- ~
....~ -~ ZONE-6
I 1S\Hf.Pr:>.GS I'[R.\1:.'\R
I ...~~ '---=r
I
........ I _-J
-
I PuptJl~ 8y PuNk "'Orb lNparl...,m Cll)" of.<;h"iOf"H
Lo~t Updalt Jum>fll}"S. JfX)9
-., --
/ " , ,
CITY OF SHAKOPEE
PUBLICWORKS DEPARTMENT
MARCH 24,2009
Street Sweeping Projected Calculation
Sweeping Policy Operating Expense
Prooosed Street SweeDin!! Contract Out Operations
. .. Broom Hours Broom Hours Contr<lct Cost Total
"'eo CeDter Une Mues; Equipment Mile~ Broom Hours
Factor RBle Elgin Rc~..-.ati'VeAir (p".HR..) Conaacl Cost
City 752.2 x2.5 1880.5 3.6;\0'J1(EJltio) 213.1 354.6 S 87.50 S 94,]90.64
Streets 3.-5 (Rc-Air)
Cou.nty 58.2 x 2.5 145.5 30.0 Mrn (E1eilt) 14.6 29.1 1076.5 $ 90.00 $ 96.881.80
Roads J.S (Re--Alr)
Fall Sw....epinl!. $ 92.50 S 99,572.96
. .. Broom Hours Broom HOurs Initial Investment (EQuipment)
Center Line Miles Factor Equipment Miles Rate Elgin Regenerative Air
City 79.4 x 2.5 19S.S 2.(I~(EI~ill} 34.7 S1.6 Unit Elgin Regenerative Air
Stn:~s :!.s(R~Ajr)
County 3&.& x 2.5 97.0 2.l1Ml'M(i:Jrtin) 14.6 27.2 Tnvestmetlt S 128,300.00 $ 165.000.00
Ro"" 1.5 (Re-Air)
Parkin!!' Lot Sweellin!! Ooeratin!! Cost
. .. Broom Hours Broom HOUTS
LotMilcs Factor Equipment Miles Rate; Elgin Regenerative Air Lllbor(HR) $ 34.00 $ 15,984.24 $ 20,615.55
Citr 51.1 x 1,3 66.4 2.0MPIl(l:ljl:i.) 21.6 ]1.6 fUel (G<l[) $250 S 940.2S 5: 1,5]5.85
Facilities :2.0 (ne:-AiT)
Ci!yParks 18.6 "1.3 24.2 2.0 M"PH (Ellr.) 7,3 4.8 """. Maintenancc $ 10,107.68 $ 9,095.10
2.0 (Re-Air)
Seal Coat Sweeviol! DeprcciOltion 12 Year Elgin S S,553.33 $ 13,200.00
10 year Rc.Air
... .. Droom Hours Broom Hou~
Center Line Mf[es Equipment Miles Insmance $1,000,00 $ 1,000.00
Factor R>le Elgin Regenerative A iT
City 15.6 xiI 171.6 1.~.\O"n(El2in) 1I4.4 85,S Total P"-Sw~ept'r $ 36,585.50 $ 45,426.50
StrcdS 2.U(Re-Air)
Prep-Area 15.6 xS lZ4.8 2.SM'pn(~ill) 49.9 41.6 Totalln-lto/1Se $ 82,012.00
3.0 (Rc-Air) OpertI!iRg Cost
. TotaL Hours 470.1 GlJ6,3 OperaJittt: Clr.Jl puw'flQur S 77.S2 $ 74.92
D NQ.IL
~I ;. Maximum Production hOUri ~r-.sweeperlper yur is 720. . Factor for curbs, inter.;ection. mediums., public events, incidents, obslacl~. and weather ~ents.
ii. :aMP's and Plan requ.ires two swccpro fur lime and type ofose. >. EMP's recommc:ntled spc:ed
iil, WdlHcavy and Seal Coat pick tp is most cfncicnt -MIll the FJgin Unit on fil'5f swCCp follo.....ed by me .- Full ~treet width c1~M:d multiple 5'.vceping,. multiple ~umpint:. extra support equipment needed.
-J' \l~~: Rr.~tlveAir. .- Averag.c annual M<1inlena:1te cost lAW equipment manufacn;n:s cstimate based on hours ofuse:.
~ ,..~ Public Works Department March 20,2009
City of Shakopee Smc:t Sweeping Projected C.1lcnla!ion.xlsx
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~/ CITY OF SHAKOPEE
PUBLICWORKS DEPARTMENT
MARCH 24, 2009
./ Street Sweeping Discussion Points
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I. For additional sweeping and mobility or water quality sweeping, a
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Regenerative Air Sweeper is recommended
. Are the minimum frequencies in the policy acceptable or should
I we have less minimum frequencies
I . Two types of sweepers needed for the various sweeping activities
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I done by the city - Mechanical and Regenerative Air
. In house per hour cost is cost effective to contract
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i . Cannot rent or lease Regenerative Air Sweeper
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I . Cost of Sweeper and Sweeping is out of Surface Water Fund
. Possible grants from Scott CountyWMO and Lower Minnesota
River Watershed District
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/ CITY OF SHAKOPEE
PUBLICWORKS DEPARTMENT
MARCH 24, 2009
~ Sidewalk/Trail Discussion Points
. Trails are being added to sidewalk policy already reviewed by
Council
. Trails are 100% funded by the city
. Trail Maintenance procedures are listed in the Procedures and
Responsibility and are for Bituminous surfaced trails
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/ CITY OF SHAKOPEE
PUBLICWORKS DEPARTMENT
MARCH 24, 2009
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../ Tree management Plan Summary Points
· Tree Inventory done this winter
· Condition and Size denoted
· Criteria for Maintenance of trees being established
· Final Plan and Policy to be done this year with assistance from
Jamie Polley, Park and Recreation and Natural Resources Director
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Y CITY OF SHAKOPEE
PUBLICWORKS DEPARTMENT
MARCH 24, 2009
./ Storm Drainage System Maintenance Policy
. Developed to:
> Protect property
> Ensure safety
> Address mandated requirements set forth by the MPCA
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/ CITY OF SHAKOPEE
. ,
PUBLICWORKS DEPARTMENT
MARCH 24, 2009
,/ Storm Drainage System Maintenance Policy addresses the following:
. MPCA mandated requirements include:
~ Inspecting all sump manholes on an annual basis
~ Inspecting 20% of all outfalls, storm water basins, infiltration
basins annually
~ Developing a program to detect and eliminate illicit
discharges into our storm drainage system
~ Keeping records of the inspections, determinations and
maintenance activities
~ Developing a maintenance program
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I CITY OF SHAKOPEE
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PUBLICWORKS DEPARTMENT
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MARCH 24, 2009
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I
I ../ Storm Drainage System Maintenance Policy
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1 . Additional benefits include:
I ~ Requires staff to develop a definitive inspection list with
I
I specific maintenance requirements
I ~ Establishes inspection frequencies for each component of the
I system
I ~ Establishes maintenance priority rankings as well
~ Sets forth a training program for staff
~ Used along with the recently adopted Easement Fencing and
Landscaping Policy, it will assist Public Works personnel with
performing maintenance within drainage and utility easements
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