A-1. Review City's Snowplowing Benchmarks ;!� ��.v
CITY 6 il'J M�MORANDUM
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TO: Todd Gerhardt, City Manager
7700 Markei Boulevard
PO BoX 147 FROM: Paul Oehme, Director of Public Works/City Engineer �� �'�`
Chanhassen,IVII�I��3 i�/
DATE: June 22, 2015 ����'�
Adminisfration
Phone:952.227��oo SUBJ: Review City's Snowplowing Benchmarks
Fax:952.227.1110
Building Inspections
Phone:952.227.11Bo BACKGROUNI)
Fax:952.227.1190
The City's Street Department is responsible for snow and ice control on city streets.
Engineering The City maintains 110 miles of streets in the community. Also ineluded in this
Phone�952.227.1160
Fax��5222T117o maintenance are a few iniles of streets in the City of Victoria (Tristan Heights
neighborhood). The City does get reimbussed for this work. During lar�er snow/ice
Finance events, the Street Department utilizes the Utility and Parks Departments' staff to help
Phone:95222�.114o in these instances. Each employee is assigned a route for• efficiency for better
Fax:952.227.1110 customer service (see attached map).
Park&Recreation The City works with the Carver County sheriff s office on call outs and if specific
Phone:952227.1120
Fax 952.22��1�o areas need to be treated o1•plowed imme�diately. During an "average" snow event, the
Street Superintendent calls plow drivers to star•t plowing the streets at 3:00 a.m. This
Recreation Center time will vary depending on street condition and weather reports. The snowplowing
2310 Coulter Boulevard operation will start according to the following critei�ia:
Phone:952227.1400
Fax:952227.1404 A. Sx1ow accumulation of approximately two or Inot•e inches;
P�anning& B. Drifting of snow that causes pt�oblems for travel;
Natura�Resources C. Icy conditions which seriously affect travel; and
Phone:952.227.113o D. Z"ime of snowfall in relationship to heavy usage of sh•eets (i.e. weekday a.m.
Fax:952.227.1110 and p.m. commuter periods).
Public Works Snow will be plowed in a mannet�to provide access as soon as possible and to
7901 Park P�ace minimize traffic obstructions. Collector roadways are plowed first. Local streets and
Phone:952.227.1300
Fax:952.22�.1310 cul-de-sacs are initially plowed with a single pass to open all t•outes as soon as
possible. Atter all routes are open. streets and cul-de-sacs are then plowed curb to
Senior Genter curb. The goal is to have all streets open by 7:00 a.m. It is the Street Department's
Phone�95222�.1125 goal to have the entire street system cleaned after a "typical" snowfall in
Fax:952.2271110 approximately 10 hours, assuming a general plowing operation beginning at 3:00 a.m.
with snowfall ending b,y 7:00 a.m. Opening up most streets before the normal a.m.
vuebsite rush hour is not only an important service 1eve1 the City provides but it is also an
www.c��.chanhassen.mn.us important safety cornponent of the operation. Depending on snowfall conditions and
the duration of the storm, cleanup operations can widely fluctuate. Cleanup
operations are mainly handled with plow trucks and front end loaders with plows
Chanhassen is a Community for Life-Providing for Today and Planning for Tomorrow
Todd Gerhardt
Review City's Snowplowing Benchma�•ks
June 22,2015
Page 2
depending on the situation. Clearing snow away from hydrants is the property owners'
r•esponsibility unless special situations require the City to complete this work.
As older snow and ice conti•ol equipment becoines unreliable and is replaced, the City has been able
to purchase chemical treatment equipment with the new trucks that is mot•e aceurate, efficient and
saves on the amount of chemicals used. The City is also using pretreating salt with liquid chemicals
such as calcium chloride. Dry salt material bounces or blows off the road. By pretreating salt, the
salt stays in the ai�ea where treatment is applied. Liquid treatinent of salt also increases the salt's
effectiveness by jump-starting the melting process. Depending on the liquid used, it may lower the
salt's effective working temperature. Using liquid application activates salt quicker so it nlelts snow
and ice in less time. This allows less product to be used.
The 2014/2015 winter was about an average year with 26 call out events. As a reference, the Street
Department had 35 call outs in 2013/2104, 43 call outs in 2012/2013 and 25 call outs in 2011/2012.
Attachments: 1. Map of Snowplow Route
2. 2014/2015 Snow Event Records
�:Aeng\publicApw309 sno�vplowing\ws bkgd 062215 snoti�plow benchmark.doc
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STORM EVENT RECORDS-TIME AND MATERIALS
2014-2015
egu ar ve ime epo e epo e a ons Time
Start Time Accidents
EVENT DESCRIPTION OPERATION Fuel When
Storm# DATE of Salt Used Brine Gal. (County Comments
(inches,condition,blowing ect.) DETAILS used Operation Hours Hours Tons Treated Salt Cal.Chlor. 80/20 O etn Records)
1 11/10/2014 Falling temps/wind/2.6"snow/call out 11 out 185 4:15 a.m. 88 28 42.5 4 p.m. 2 1 on cit streets ',
2 11/11/2014 Falling temps/wind/.8"snow/call out 9 out 136 3.25 a.m. 27 29.5 29 10 a.m. 4 1 on city streets �
3 11/15/2014 Falling temps/1.3"snow very icy 7 out 126 2:30 p.m. 39 23.5 8 p.m.
4 11/19/2014 .5"snow&blowing snow 4 out 62 4:30 a.m. 8 10 9.5 9 a.m.
5 11/24/2014 .5"snow and Windy drifting snow 6 out 85 6 a.m. 11.5 3 9.7 25 9 a.m.
6 11/26/2014 2.2"Snow 10 out 150 6 a.m. 80 28.75 38.15 6 52 54 20 6 p.m. 8 3 on city streets
7 11/28/2014 Patchy freezing drizzle/Call Out.9" 9 out 185 5:30 a.m. 54.5 31.75 17 52 6 noon
8 12/16/2014 .8"Snow&icy condtions 8 out 120 2:30 a.m. 64 36 29.50 123 3 p.m. 7 4 on city streets
9 12/27/2014 4.2"Snow/Call Out 10 out 328 3 a.m. 84 39.30 31 75.2 12:15 p.m. 10 1 on cit streets
Treat intersections and slippery
10 12/29/2014 areas&Clean up from Yestarday 4 out 63 7 a.m. 32 3.08 7 26 3 p.m.
11 1/4/2015 Light snow&icy intersections 7 out 93 3 a.m. 35.75 3.93 5.5 32.4 8 a.m. 1 1 on city streets
12 1/6/2015 .5"Snow/Cold/Ice/Call Out 8 out 153 2 a.m. 64 35 21.94 10.5 195 3 p.m. 7 1 on city streets
13 1/8/2015 Snow-3"/Call Out 8 out 132 12 p.m. 24 7.5 11.16 11 89 4:30 p.m. 6 1 on cit streets
14 1/9/2015 Cold/Call Out Streets icy. 10 out 195 2:30 a.m. 35.5 44.5 29.74 9.5 105.1 8 a.m. 5 0 on city streets
.6"snow-call out intersetions icy -
15 1/14/2015 10 Deg. 7 out 69 2:30 a.m. 1 27 9.28 5 75 7 a.m. 7 2 on city streets
16 1/21/2015 .9"snow-call out roads icy 7 out 117 2 a.m. 30.75 8.73 4.5 167.7 7 a.m. 4 3 on city streets
17 1/25/2015 .1"snow/freezing rain-call out 7 out 82 7:30 a.m. 27.5 22.3 208.5 11:15 a.m.
18 1/29/2015 trace-call out Icy 3 out 45 2:45 a.m. 12.5 3.65 75 7 a.m.
19 2/3/2015 2.2"snow 9 out 204 12 noon 14.50 46.00 17 12.5 151.5 30 8:45 p.m. 4 1 on city streets
20 2/4/2015 .4"snow&icy-call out 6 out 138 2:15 a.m. 42 15 9.74 0.15 93.8 3 p.m. 4 1 on city streets
21 2/10/2015 .8"snow&icy. 9 out 191.3 9 a.m. 40 18 40.3 95 373.6 5 p.m. 8 1 on city streets
22 2/11/2015 call out icy 5 out 74.7 2:30 a.m. 18 4 13 167.10 8 a.m. 3 1 on city streets
23 2/20/2015 .8"snow-call out 8 out 164.5 3:15 a.m. 33 25.75 13.09 10 136 12 p.m. 1 none on city streets
24 2/25/2015 .2"snow icy treat intersections 7 out 118 7 a.m. 41 14.00 4 131 3 p.m. 5 1 on city streets
25 3/3/2015 2.4"snow 11 out 278 7:30 a.m. 66 12 15.66 81 4 p.m. 2 1 on city streets
26 3/23/2015 5.4"snow 9 out 191.5 2 a.m. 27 39.00 6 11 a.m. 3 1 on city streets
TOTAL 3,686.20 716.50 691.75 495.93 85.35 1,338.10 201.00 1,148.10