Environmental Assessment Worksheet
ENVIRONMENTAL ASSESSMENT WORKSHEET
Note to preparers: This form is available at http://www.eqb.state.mn.us. EA W Guidelines will be
available in Spring 1999 at the web site. The Environmental Assessment Worksheet provides
information about a project that may have the potential for significant environmental effects. The EA W
is prepared by the Responsible Governmental Unit or its agents to determine whether an Environmental
Impact Statement should be prepared. The project proposer must supply any reasonably accessible data for
- but should not complete - the final worksheet. If a complete answer does not fit in the space allotted,
attach additional sheets as necessary. The complete question, as well as the answer must be included if the
EA W is prepared electronically.
Note to reviewers: Comments must be submitted to the RGU during the 30-day comment period following
notice of the EA W in the EQB Monitor. Comments should address the accuracy and completeness of
information, potential impacts that warrant further investigation and the need for an EIS.
1. Project title: New ISD 112 High School in Chanhassen
2. Proposer: ISD 112
Contact person: Steven Pumper
Title: Director of Finance and Operations
Address: 11 Peavey Road
City, state, ZIP: Chaska, MN 55318
Phone: 952-556-6261
Fax: 952-556-6269
E-mail: pumpers@district112.org
3 RGU: City of Chanhassen
Contact person: Robert Generous, AICP
Title: Senior Planner
Address: 7700 Market Boulevard, P.O. Box 147
City, state, ZIP: Chanhassen, MN 55317
Phone: 952-227-1131
Fax: 952-227-1110
E-mail: bgenerous@cLchanhassen.mn.us
4. Reason for EA W preparation: (check one)
EIS scoping X Mandatory EA W Citizen petition RGU discretion
Proposer volunteered
If EA W or EIS is mandatory give EQB rule category subpart number: 4410.4300, subpart 14.b.3
and subpart name: Industrial, commercial, and institutional facilities
Proposed project exceeds 300,000 square feet of new institutional construction.
5. Project location County: Carver County
CityrI'ownship: City of Chanhassen
SE 1/4
NW 1/4
SW 1/4 Section 15
Section 22
Township 116 North
Township 116 North
Range 23 West and
Range 23 West
Attach each of the following to the EA W:
. County map showing the general location of the project; (See Figure 1)
. U.S. Geological Survey 7.5 minute, 1:24,000 scale map indicating project boundaries
(photocopy acceptable); (See Figure 2)
. Site plan showing all significant project and natural features. (See Figure 3)
6. Description
a. Provide a project summary of 50 words or less to be published in the EQB Monitor:
In order to accommodate projected growth, ISD 112 proposes to build a new high school in
Chanhassen to be located on undeveloped property northeast of County Road 18 (Lyman Boulevard)
and north of Hazeltine Lake. The proposed high school will be constructed to accommodate 2000
students, and related school developments will include adjacent parking and numerous athletic fields.
The school is projected to open in Fall 2009.
b. Give a complete description of the proposed project and related new construction. Attach
additional sheets as necessary. Emphasize construction, operation methods and features that will
cause physical manipulation of the environment or will produce wastes. Include modifications to
existing equipment or industrial processes and significant demolition, removal or remodeling of
existing structures. Indicate the timing and duration of construction activities.
The proposed project will be constructed on a land parcel approximately 94.8 acres in size, that is
generally bounded on the south and west by County Road 18 (Lyman Boulevard), on the north by the
Twin Cities and Western Railroad, and on the east by Bluff Creek (see Figure 4).
A total of one building will be constructed. The building will be 3 stories (portions) and have a
footprint of 242,400 square feet. A total of 1,153 automobile and 30 bus parking stalls are planned;
bituminous parking areas will be constructed for these areas that will encompass approximately
379,500 square feet (see Figures 5 and 6).
Traffic will enter and exit the proposed facility from Lyman Boulevard at three separate points.
The following improvements must be in place at the opening of the high school: turn lanes in both
directions on Lyman Boulevard at the north entrance to the facility and at the intersections of Lake
Hazeltine Drive and southbound Audubon Road, and the Lake Hazeltine Drive intersection must be
signalized. A traffic study was conducted as part of the project environmental evaluation. The results
of the study show that the level of service will be negatively impacted without roadway improvements.
Three wetlands exist at the site, totaling a total of 24.2 acres. A total of 1.66 acres of wetland are
anticipated to be impacted (filled) prior to construction activities. Mitigation measures will be
performed as required by Minnesota wetland rules and the City of Chanhassen.
Utility construction will include extensions for potable water, sanitary sewer, electrical power and
natural gas. All utility construction will be extensions from nearby existing connections. Storm water
runoff will be collected, detained and treated to preconstruction standards, and discharged to Bluff
Creek.
The property where the construction is proposed to occur is currently in agricultural use, and a remnant
farmstead (outbuildings only) on the southern portion of the parcel. The farmstead buildings will be
demolished according to state and local rules, and associated underground structures (wells, septic
system) appropriately abandoned.
Erosion and sediment control will be managed during construction activities through development and
implementation of a Construction Storm Water Pollution Prevention Plan (SWPPP). This plan will
include specific measures to be taken to minimize water quality impacts to nearby surface waters from
sediment carried by storm water during construction. The SWPPP plan will contain details of
proposed storm water protection measures, including Best Management Practices such as crushed rock
aprons at entrances and exits, perimeter silt fence, stock pile protection, construction staging, and
temporary basins.
2
Wastes generated during construction will include only unsuitable soils and normal construction debris
associated with new construction. Waste streams generated after school operations have begun are
anticipated to include primarily mixed municipal waste, with building maintenance activities anticipated
to generate minor amounts of regulated waste.
The proposed timing for the project envisions the start of construction in Spring 2007, with completion
by Fall 2009. Construction activity phasing is anticipated to be grading (Winter 2006), building
construction (Summer 2007), parking area and road construction (Fall 2007), and athletic field
construction (spring 2008).
c. Explain the project purpose; if the project will be carried out by a governmental unit, explain the
need for the project and identify its beneficiaries.
The purpose of the project is to build a second high school within Independent School District 112 to
accommodate observed and projected increases in local population growth. The project will be carried
out by Independent School District 112, and the direct beneficiaries will be high-school aged students
(grades 9-12) and their families. A referendum to fund the construction of the high school is scheduled
for November 7,2006.
d. Arefuture stages of this development including development on any outlots planned or likely to
happen? _Yes LNo If yes, briefly describe future stages, relationship to present project,
timeline and plans for environmental review.
N/A
e. Is this project a subsequent stage of an earlier project ? Yes LNo
If yes, briefly describe the past development, timeline and any past environmental review.
N/A
7. Project magnitude data
Total project acreage 94.83 acres
Number of residential units: unattached N/ A attached: N/ A maximum units per building: N/ A
Commercial, industrial or institutional building area (gross floor space): 405,000 total square feet
Indicate areas of specific uses (in square feet):
Office: N/ A
Retail: N/A
Warehouse: N/A
Light industrial: N/A
Other commercial (specify): N/ A
Building height: 3 Stories
Manufacturing: N/A
Other industrial: N/ A
Institutional: 405,000 square feet
Agricultural: N/ A
If over 2 stories, compare to heights of nearby buildings:
The proposed structure is generally consistent with existing construction in the vicinity of the site. The
nearest buildings visible from the site are the back sides of one- to two- story buildings across Lyman
Boulevard in the industrial park, and two-story residential housing approximately lh mile to the east of
the site (across the Bluff Creek Preserve). Residential housing to the north of the site is generally
screened from view from the site by trees along the railroad tracks.
8. Permits and approvals required. List all known local, state and federal permits, approvals and
financial assistance for the project. Include modifications of any existing permits, governmental review
of plans and all direct and indirect forms of public financial assistance including bond guarantees, Tax
Increment Financing and infrastructure.
3
Unit of J?overnment
Federal
US Army Corps of Engineers
Tvpe of application
Status
Section 404 Wetland Permit
To be submitted
State
Minnesota Pollution Control Agency
NPDES Construction
Storm water Permit
To be submitted
Sanitary Sewer Extension
Permit
To be submitted
Unit of J?overnment
Minnesota Department of Health
Tvve of application
Water Main Extension Permit
Status
To be submitted
Well Sealing Notification
To be submitted
Regional
Metropolitan Council
Sanitary sewer connection permit
To be submitted
County
Carver County
Work Within Right of Way
Approval
To be submitted
Local
Riley/Purgatory/Bluff Creek Watershed District
Grading Permit
To be submitted
City of Chanhassen
Rezoning Approval
To be submitted
Conditional Use Permit
To be submitted
Wetland Conservation Act Permit
To be submitted
Site Plan Review
To be submitted
Interim Use Permit
(preliminary site grading)
Submitted for
review
Variance
To be submitted
Demolition Permit
To be submitted
Building Permit
To be submitted
ISD 112
Bonding Referendum
Election 11/7/2006
9. Land use. Describe current and recent past land use and development on the site and on adjacent
lands. Discuss project compatibility with adjacent and nearby land uses. Indicate whether any potential
conflicts involve environmental matters. Identify any potential environmental hazards due to past site
uses, such as soil contamination or abandoned storage tanks, or proximity to nearby hazardous liquid
or gas pipelines.
Current land use within the parcel boundaries is agricultural (row crops) and grasslands/wetlands, and a
remnant farmstead currently exists in the southern portion of the site. Review of historical aerial
photographs also document this land use to at least 1940. The residence previously located at the farmstead
was reportedly removed from the site when the electrical substation was constructed in 1988.
4
Historical land use of adjacent lands is primarily agricultural, with commercial/light industrial development
beginning to the south of the site in the late 1980s and early 1990s. Residential development is has been
constructed to the north and east of the site.
The proposed project does not raise any significant compatibility issues with nearby non-residential land
uses, as this nearby land use (commerciaVwarehouse) does not store or use large amounts of hazardous
substances that could be released during an emergency situation. Also, the proposed school is considered
compatible with nearby residential land uses.
A buried 12" liquid petroleum pipeline, owned by Magellan Pipeline, approximately bisects the site,
running mostly east-west across the site. Although no buildings will be constructed within the pipeline
right-of-way, the presence of this operating liquid pipeline presents a potential hazard both during
construction and ongoing building operations. Care will need to be taken during construction operations to
make all construction contractor employees aware of the presence of the pipeline. This will be done during
the construction phase through use of pipeline location highlighting on all relevant construction plan sheets,
construction field flagging of the pipeline, preparation of a spill contingency plan, and ongoing awareness
at project management meetings during construction. After construction, the pipeline location will be
identified by physical signage, notations on building layouts, and training of building grounds employees.
Additionally, the school will develop an emergency evacuation/response plan to plan for unforeseen
emergency situation related to a pipeline release.
Potential environmental hazards were identified in a Phase 1 Environmental Site Assessment (ESA)
performed in 2004 at the property (related to the remnant farmstead) in the form of regulated waste
associated with planned demolition (e.g. asbestos, lead paint, waste fluids and containers), possible historic
on-site disposal of farmstead wastes, and possible fill materials that may contain regulated substances.
Also, the Phase 1 ESA identified an unused above ground storage tank at the remnant farmstead; it is
possible that soil and/or groundwater contamination exists as a result of past uses of this tank. Detailed
investigation of these potential hazards was not performed as a part of the Phase 1 ESA; these hazards will
be further evaluated (and mitigated, if necessary) as part of demolition activities and prior to site grading
activities in accordance with Minnesota Pollution Control Agency (MPCA), Minnesota Department of
Health (MDH) and local rules.
10. Cover types. Estimate the acreage of the site with each of the following cover types before and after
development:
Types 1-8 wetlands
Wooded/forest
Brush/Grassland
Cropland
Lawn/landscaping
Impervious surfaces
Other (storm ponds)
Before
24.6 acres
2.53
5.1
62.42
o
0.18
o
After
26.4 acres
1.4
6.5
o
33.53
24.5
2.5
TOTAL
94.83
94.83
If Before and After totals are not equal, explain why:
Not applicable
11. Fish, wildlife and ecologically sensitive resources
a. Identify fish and wildlife resources and habitats on or near the site and describe how they would be
affected by the project. Describe any measures to be taken to minimize or avoid impacts.
The U.S. Fish and Wildlife Service was contacted for review of federally listed threatened or
endangered species within the project site. According to the U.S. Fish and Wildlife Service, no
federaIly listed or candidate species are documented on the site.
5
A majority of the project site has been disturbed by cultivated agricultural land uses (currently used for
corn production). There are clusters of trees and shrubs on the property. These wooded areas provide
habitat for birds (blue jays, warblers, nuthatches, chickadees, grackles, crows) and for small and larger
mammals (small rodents, rabbits, squirrels, foxes, raccoons, opossum, deer) that are typically found in
and at the edge of the urban landscape.
Four wetland areas have been delineated on the Site (see Figures 7 and 8). Wetland "A" is a 6.03-acre
Circular 39 Type 2, 3, 6, and 7 wetland complex located along the northeastern border of the site. This
wetland is dominated in the swales by reed canary grass. Willows and cattails are also found in this
wetland complex. In the shrub and wooded portion of the swales, box elder, cottonwood, elms, and
willows are dominant. Wetland "B" is a 17.94-acre continuation of wetland "A" which is located
along the southeastern border of the site with a finger that extends across the site and to near Lyman
Boulevard. Wetland "C" is a 0.23-acre Circular 39 Type 2 wet meadow located along the
southwestern border of the site. This wetland is dominated by a near monotypic stand of reed canary
grass. Portions of this wetland also contain cattails, willows, shrubs, and deciduous trees. Wetland
"D" is a OA-acre area along Lyman Boulevard in the central portion of the site and is dominated by
corn and nightshade with reed canary grass in the ditch.
The wetlands provide habitat for some aquatic life (such as invertebrates and amphibians) and provides
edge habitat for the other bird and mammal species mentioned previously. The wetlands also provide
seasonal habitat for waterfowl.
Additionally, a l.50-acre conservation easement connects wetlands "A" and "B" along the eastern
border of the site. The project site is adjacent to and west of one of the three parcels of Bluff Creek
Preserve and is adjacent to and west of a City park. According to the City of Chanhassen, the preserve
creates an important wildlife travel corridor in the center of the community.
The proposed project site is near Bluff Creek. Efforts to minimize impacts to the creek are explained
in detail in question number 17.
The proposed development scenario consists of more intensive land uses compared to the existing land
uses. The more intensive uses will result in changes in vegetative cover (see question 10), including
conversion of much of the agricultural land and some of the wooded portions of the study area to
suburban cover. The majority of the wetland areas and the entire conservation easement will be
preserved. Portions of wetlands A and B and all of wetland D will be filled for a practice field, an
access road, a parking and to create a walking path between the bus parking area along the southwest
corner of the high school to the existing pedestrian path in the adjacent park; however, mitigation will
occur on site. Mitigation locations are planned in the extreme southeast corner of the property as well
around the four storm water ponds that will be constructed on-site near the existing wetlands (using
Public Value Credits). Public Value Credits may be issued due to the "establishment or preservation
of upland buffer areas contiguous to replacement wetlands, restoration of partially drained wetlands,
and creation of storm water detention areas." See Minn. R. 8420.0541, subp. 6. Some of the vegetation
impacts will be mitigated by plantings of native trees, shrubs, and perennial plants planned as part of
the proposed development. The developer will work with City staff to identify the appropriate
quantities, types, and locations of plantings during City staff review of the landscape plan for the
proposed project.
MnlDOT plans to perform wetland mitigation activities immediately east of the project site (in the
Bluff Creek wetland complex) as off-site mitigation for wetland impacts from the new construction
of nearby Highway 212. These activities will include remeandering of a portion of Bluff Creek,
vegetative restoration of portions of the wetlands adjacent to Bluff Creek, and blocking the vacated
ditch/channel of Bluff Creek after remeandering is completed. There are no anticipated changes in
stream hydrology or wetland boundaries as a result of these mitigation activities. Some of the planned
mitigation work to be done by MnlDOT is planned to be completed within the ISD 112 site
boundaries. As a result, ISD 112 is currently negotiating with MnlDOT to allow MnlDOT to perform
their mitigation work on ISD 112 property.
6
Wetland habitats will be protected as a result of the City of Chanhassen's wetland buffer and setback
ordinances. Classified as agricultural urban wetlands, current buffer requirements range from 16 to
20 feet from the delineated wetland boundary, and setbacks for any structures are 40 feet.
Existing wildlife populations may concentrate at the remaining "natural" habitat areas on the site
(declining in numbers if they stay in the remaining, smaller natural areas on the site), or they may
adapt to the new suburban cover types, or may migrate to nearby natural habitat locations.
During construction, appropriate setbacks will be maintained and silt fencing will be installed on the
portions of the wetlands with the potential to receive construction runoff. The installation of silt fence
will minimize the effects of sedimentation and ensure that the wetlands are not altered as a result of the
construction. Preserved wooded areas not already protected by silt fence will be protected by tree
preservation fencing.
b. Are any state-listed (endangered, threatened or special concern) species, rare plant communities
or other sensitive ecological resources such as native prairie habitat, colonial waterbird nesting
colonies or regionally rare plant communities on or near the site?
_Yes -X-No
If yes, describe the resource and how it would be affected by the project. Indicate if a site survey
of the resources has been conducted and describe the results. If the DNR Natural Heritage and
Nongame Research program has been contacted give the correspondence reference number:
ERDB# 20070286 Describe measures to minimize or avoid adverse impacts.
The Minnesota Department of Natural Resources was contacted for review of their Natural Heritage
Database (ERDB# 20070286). That review is included as Attachment A. They have indicated that
there are no known occurrences of rare species or native plant communities in the project area.
/2. Physical impacts on water resources. Will the project involve the physical or hydrologic alteration -
dredging, filling, stream diversion, outfall structure, diking, and impoundment - of any surface waters
such as a lake, pond, wetland, stream or drainage ditch? lYes _No
If yes, identify water resource affected and give the DNR Protected Waters Inventory number(s) if the
water resources affected are on the PWI. Describe alternatives considered and proposed mitigation
measures to minimize impacts.
Of the total 24.6 acres of wetland present within the project boundary, approximately 1.66 acres of
wetland are proposed to be filled for an access drive, parking lot and a practice field (see Figure 9).
None of the impacted wetland areas are MN DNR-protected waters (see Figure 10). The impacted
wetlands are labeled as portions of Wetlands A and B (described in more detail in Question 11 above),
and the proposed fill locations are shown on Figure 9. A total of 3.33 acres of wetland area are
proposed to be created as on-site mitigation (at a 2: 1 ratio) for these filled areas (see Figure 9 for
mitigation locations), and these wetland impacts will be permitted through MN Wetland Conservation
Act processes locally administered through the City of Chanhassen.
13. Water use. Will the project involve installation or abandonment of any water wells, connection to or
changes in any public water supply or appropriation of any ground or surface water (including
dewatering)? -XYes _No If yes, as applicable, give location and purpose of any new wells; public
supply affected, changes to be made, and water quantities to be used; the source, duration, quantity
and purpose of any appropriations; and unique well numbers and DNR appropriation pennit numbers,
ifknown. Identify any existing and new wells on the site map. If there are no wells known on site,
explain methodology used to detennine.
The proposed project will require connection to the City of Chanhassen's municipal potable supply
system. The City of Chanhassen obtains its potable supplies from 10 water supply wells that produce
water from the Prairie du Chien/Jordan (7 wells), and glacial sediment aquifers (3 wells), and are
permitted by the MN Department of Natural Resources under appropriation permit number 816089.
7
The City has indicated that its potential aquifer supply, and pumping and storage capacity is adequate
to accommodate these increased demands without additional wells or off-site infrastructure
improvements. Trunk water main must be extended along Lyman Boulevard to facilitate the looping
of water for the high school.
Water usage in the school building for the proposed facility is estimated at 50,000 gallons per day
during the school year (approximately 10 million gallons per year); this total number is based on the
MN Plumbing Code requirement of25 gallons per person per day for this type of facility. Additional
water will be used for exterior (irrigation) uses to maintain the grounds and athletic fields. In order to
reduce the demand for potable water for irrigation, all sprinkling systems will include rain sensors to
prevent sprinkling during rain events. Interior water use will be at its peak during the school year
(September through May), and drop off significantly during the remaining summer months.
It is currently unknown whether construction dewatering will be necessary during excavation of the
proposed building and related utility construction. Given the site topography, building locations and
subsurface geology, is appears unlikely that groundwater will be encountered and thus require
dewatering of excavated areas. Temporary ponded water from precipitation events during construction
will require removal; this dewatering activity does not require MN DNR Appropriation permitting but
will be addressed (and potential impacts designed to be mitigated) within the MPCA-required
Construction Storm Water Pollution Prevention Plan (SWPPP).
14. Water-related land use management district. Does any part of the project involve a shoreland zoning
district, a delineated JOG-year floodplain, or a state or federally designated wild or scenic river land
use district? -.K.]es _No
1fyes, identify the district and discuss project compatibility with district land use restrictions.
The eastern part of the site abuts the FEMA-delineated 1 DO-year floodplain along Bluff Creek, as well
as the City of Chanhassen' s Bluff Creek Overlay District (see Figure 11). However, no buildings will
be constructed within these areas, and construction activities will be outside these boundaries. The
project will maintain compliance with the shoreland protection ordinance since the proposed project
is within 300 feet of Bluff Creek and may be within 1,000 feet of Lake Hazeltine. The required
Conditional Use Permit application will detail conformance with setback, impervious surface, and
natural habitat preservation requirements of the overlay district. Therefore, no incompatibilities are
anticipated with these land use restrictions.
There are no state- or federally-designated wild or scenic river land districts in the project area.
15. Water surface use. Will the project change the number or type of watercraft on any water body?
_Yes lNo 1fyes, indicate the current and projected watercraft usage and discuss any potential
overcrowding or conflicts with other uses.
The proposed project is not anticipated to change the number or type of watercraft on any body of
water.
16. Erosion and sedimentation. Give the acreage to be graded or excavated and the cubic yards of soil to
be moved: 65 acres; 730,000 cubic yards. Describe any steep slopes or highly erodible soils and
identify them on the site map. Describe any erosion and sedimentation control measures to be used
during and after project construction.
The upland areas of the site are mapped by the USDA as Hayden loam (Ha designation on Figure 12)
with slopes varying from 2 to 40 percent. These soils are considered well-drained but listed as
severely erodible, and the steepest slopes occur on the eastern portion of the site. Thus, these soils
must be stabilized once disturbed to prevent erosion from precipitation runoff.
At lower elevations in the upland areas are Terrilloam (Te designation on Figure 12) soils with slopes
varying from 0 to 6 percent; these soils are moderately well-drained and are not readily erodible. Also
present at these lower elevations are Lester loam (La designation on Figure 12) with 2 to 6 percent
slopes, and which is moderately well drained and is has a moderate erosion hazard.
8
At lower elevations at the site, soils are listed as deep peat and muck (Pd designation on Figure 12);
these areas represent the larger wetland areas to the east of the site. Typically flat-lying, these
sediments are prone to erosion of disturbed.
Erosion and sediment control measures will be required to be detailed in the Construction Storm Water
Pollution Prevention Plan (SWPPP) required by MPCA that must be completed prior to construction
and implemented before and during construction. The SWPPP plan will contain details of proposed
storm water protection measures, including Best Management Practices such as crushed rock aprons at
entrances and exits, perimeter silt fence, stock pile protection, construction staging, and temporary
basins.
Project permitting by the City of Chanhassen related to mitigating possible construction storm water
impacts also includes a separate interim use permit, which will require detail and commitments
regarding timing of site construction activities, construction sequencing, measures to be taken to
avoid wetland impacts, storm water routing and temporary ponding.
17. Water quality: surface water runoff
a. Compare the quantity and quality of site runoff before and after the project. Describe pemzanent
controls to manage or treat runoff. Describe any stormwater pollution prevention plans.
Current storm water flows from the site occur as overland flow to ditches and adjacent wetlands.
Currently in agricultural use, there are no known measurements of water quality of storm water flows
at the site, nor does the current land use require formal storm water management or permitting.
City ofChanhassen rules require that permanent storm water flows to receiving surface waters meet
predevelopment flow water quantity and quality standards. National Urban Runoff Program standards
were used to develop storm water pond sizing; a total of four storm water ponds to be located at the
site are shown on Figure 13. Site ponds were also sized to accommodate the planned road upgrades
to Lyman Avenue. Therefore, potential water quality and quality impacts from permanent storm water
flows will be mitigated through design and construction of storm water improvements specified by
City rules.
Potential storm water impacts to Bluff Creek during construction will be controlled and mitigated
through the construction SWPPP permitting process described in more detail in Question 16 above.
b. Identify routes and receiving water bodies for runoff from the site; include major downstream water
bodies, as well as the immediate receiving waters. Estimate impact runoff on the quality of receiving
waters.
The receiving water for storm water runoff from the site is Bluff Creek. With an increase in
impervious surface coverage and no infiltration areas proposed, storm water volumes will increase;
however, storm water discharge rates will be required to meet predevelopment discharge rates. As
discussed above, water quality is anticipated to be improved compared to previous uses, and so no
water quality impacts to receiving waters are anticipated.
18. Water quality: wastewaters
a. Describe sources, composition and quantities of all sanitary, municipal and industrial wastewater
produced or treated at the site.
Only sanitary wastewater is anticipated to be generated upon completion of the proposed project.
Estimated sanitary wastewater produced from the site after operation is anticipated to be
50,000 gallons per day, based upon estimated indoor water consumption.
b. Describe waste treatment methods or pollution prevention efforts and give estimates of composition
after treatment. Identify receiving waters, including major downstream water bodies, and estimate
the discharge impact on the quality of receiving waters. If the project involves on-site sewage
systems, discuss the suitability of site conditions for such systems.
9
No wastewater treatment will take place on-site; sanitary wastewater will be conveyed to the MCES
Blue Lake wastewater treatment plant for treatment and discharge.
c. If wastes will be discharged into a publicly owned treatment facility, identify the facility, describe
any pretreatment provisions and discuss the facility's ability to handle the volume and composition
of wastes, identifying any improvements necessary.
Wastewater flows will be conveyed to the MCES Blue Lake wastewater treatment plant, which
ultimately discharges to the Minnesota River. The treatment plant discharges are regulated by NPDES
Permit # MN 0029882 issued to MCES by the Minnesota Pollution Control Agency. Representatives
ofMCES familiar with the Blue Lake plant were contacted, and stated that the existing treatment
facility has the current capacity to treat the proposed flows, and that the type and volume of these
additional flows will not jeopardize the discharge limitations of the facility. No treatment plant or
collector interceptor improvements are planned due to the anticipated increased flows from the
proposed project.
d. If the project requires disposal of liquid animal manure, describe disposal technique and location
and discuss capacity to handle the volume and composition of manure. Identify any improvements
necessary. Describe any required setbacks for land disposal systems.
No liquid animal manure will be generated or need disposal as part of the proposed project.
J 9. Geologic hazards and soil conditions
a. Approximate depth (in feet} to ground water: 25 mllllmum: 5
Average depth to bedrock: minimum: 375 feet; average: 425 feet
Describe any of the following geologic site hazards to ground water and also identify them on the site
map: sinkholes, shallow limestone formations or karst conditions. Describe measures to avoid or
minimize environmental problems due to any of these hazards.
The bedrock geology beneath the site is characterized as the eastern portion of a buried bedrock
valley that drains to the south to the Minnesota River. Elevations of the bedrock surface range from
approximately 500 feet above mean sea level (under the western portion of the site) to near 600 feet
above mean sea level under the eastern portion of the site. The buried bedrock valley contains
subcrops of the Ordovician Prairie du Chien Group, the Cambrian Jordan Sandstone, and the Cambrian
8t. Lawrence and Franconia Formations (in descending order). No shallow limestone formations exist
beneath the site, nor are karst conditions or sinkholes known at the site or in the area (see Figure 14).
The glacial materials overlying the bedrock are mapped as glacial till deposited by the Des Moines
lobe (see Figure 15). This till material is characterized as yellow-brown loam to clay loam, containing
sand and pebbles. These deposits also may contain pockets of silt, sand or gravel. These glacial
deposits are not generally known to be associated with subsurface hazards.
Groundwater under the site occurs both in the glacial materials and in the underlying bedrock aquifers.
Groundwater in the glacial materials occurs at shallow depth due to the relatively impermeable nature
of the glacial sediments, and gradients are anticipated to generally reflect the surface topography. No
domestic water wells are known to be present at or near the site that produce from glacial materials.
Bedrock aquifers are the primary source of potable water for the residences and businesses in the area.
These wells are over 200 feet deep, and their static water levels are approximately 100 feet below
ground surface. The thickness and composition of the glacial sediments overlying the bedrock aquifers
serve as natural protection for these aquifers from releases at or near the land surface.
10
b. Describe the soils on the site, giving NRCS (SCS) classifications, ifknown. Discuss soil granularity
and potential for groundwater contamination from wastes or chemicals spread or spilled onto the
soils. Discuss any mitigation measures to prevent such contamination.
The details of the soils mapped at the site are described in Question 16 above and are shown on
Figure 12. The Hayden series soils, which cover much of the upland area of the site, are generally
range from silty sand to lean clay in composition and have a permeability of under 0.2 inch per hour.
Their well-drained character makes them somewhat susceptible to infiltration of surface contaminants.
The other upland soil series (Terril and Lester series) are moderately well-drained and are also
susceptible to infiltration of contaminants.
Mitigation measures will include preparation and implementation of a Construction Storm Water
Pollution Prevention Plan (SWPPP) during construction activities, as well as development of an
emergency contingency plan after construction is completed.
20. Solid wastes, hazardous wastes, storage tanks
a. Describe types, amounts and compositions of solid or hazardous wastes, including solid animal
manure, sludge and ash, produced during construction and operation. Identify method and location
of disposal. For projects generating municipal solid waste, indicate if there is a source separation
plan; describe how the project will be modified for recycling. If hazardous waste is generated,
indicate if there is a hazardous waste minimization plan and routine hazardous waste reduction
assessments.
Demolition waste from the remnant farmstead will be generated prior to construction, which will
consist of concrete, steel, and various building materials. Asbestos-containing materials (if present)
will be inventoried and will be removed prior to demolition and disposed of appropriately in a licensed
landfill. Lead-based paint and other hazardous building materials that may exist (e.g., fluorescent
lamps, light ballasts, mercury switches, appliances, fuel, paint, etc.) will also inventoried and will be
removed prior to demolition and disposed of according to state and federal rules. Nonhazardous
demolition waste will be disposed of in a demolition landfill.
Excavation, removal, and disposal of any contaminated soils (if encountered) will be done in
accordance with prior MPCA review and approval.
Solid waste generation for the completed project will consist almost exclusively of mixed municipal
waste generated by school activities. Volumes of municipal waste are estimated at 10 cubic yards of
non-compacted waste per week; waste collection will occur six times per week during the school year.
Mixed municipal solid waste will be hauled to a sanitary landfill by licensed waste haulers. Source
separation (recycling) of cardboard and recyclable solids (commingled paper and consumer
recyclables) from the mixed municipal waste stream will be performed under a plan to be developed
by the School district. These recycled materials will be picked up weekly.
b. Identify any toxic or hazardous materials to be used or present at the site and identify measures to
be used to prevent them from contaminating groundwater. If the use of toxic or hazardous materials
will lead to a regulated waste, discharge or emission, discuss any alternatives considered to
minimize or eliminate the waste, discharge or emission.
No toxic materials are anticipated to be present at the site in any significant quantities during or after
construction. Small amounts of hazardous materials (e.g. cleaners, boiler chemicals, herbicides, paints,
and maintenance supplies) will be present and will likely create a small waste stream of hazardous
waste. These materials will be stored, used, and disposed of according to state and local rules.
Hazardous materials, in the form of fuel, vehicle-related materials, and certain construction materials
will be on-site during construction, but will be present in relatively small quantities and will be stored
in conformance with regulatory requirements.
11
c. Indicate the number, location, size and use of any above or below ground tanks to store petroleum
products or other materials, except water. Describe any emergency response containment plans.
The project is planned to utilize two petroleum storage tanks (for fuel oil and diesel fuel) to support
facility operations. The fuel oil tank will be a 1O,OOO-gallon underground fiberglass tank with
electronic monitoring and double-walled underground piping. This fuel will be piped to the boilers
and is designed to serve as backup fuel for the boilers in case of natural gas supply interruption.
The diesel fuel tank wiIl be a 2,700-gallon, skid-mounted above-ground storage tank, piped to a
1,500 KW diesel-powered electrical generator to be used to provide backup electrical power should
the normal power supply be interrupted.
Emergency response plans for releases from either fuel storage tank will be included within the
emergency evacuation/response plan. Also, due to the capacity of the diesel fuel storage tank, a
SpiIl Prevention Control and Countermeasures (SPCC) Plan will be prepared and implemented.
21. Traffico Parking spaces added: 1,153
Existing spaces (ifproject involves expansion): 0
Estimated total average daily traffic generated: 3,420 trips
Estimated maximum peak hour traffic generated (ifknown) and its timing: 1,408 from
7:30-8:30 a.m.
Provide an estimate of the impact on traffic congestion on affected roads and describe any traffic
improvements necessary. If the project is within the Twin Cities metropolitan area, discuss its impact
on the regional transportation system.
A detailed Traffic Impact Study (TDI, Inc., dated October 2006) was prepared for the proposed
Chanhassen High School and is here incorporated by reference. The following discussion is based on
the findings contained in the Traffic Impact Study (see Figures 15-18).
Traffic Congestion
Based on the calculations in the Traffic Impact Study, the daily traffic volumes on the roads affected
by the development wiIl be:
D 01 T ffi V 1
( Oth th
d
t
k)
ally ra IC o urnes WI e eXlstmg roa way ne wor
Existing I 2010 2010 2030
Roadway (2005) No-Build Build Build
Lyman Blvd west of Galpin Blvd 5,600 7,200 8,100 11,300
Lyman Blvd northwest of Lake Hazeltine 5,000 6,500 7,700 10,800
Dr
Lyman Blvd west of Audubon Rd South 9,100 11,000 13,100 18,300~
Lyman Blvd east of Audubon Rd South 13,400 16,2001 18,300 25,600l
2
Lyman Blvd east of Audubon Rd North 11,100 14,500 15,900 22,300~
I
Galpin Blvd north of Lyman Blvd 3,200 3,500 3,800 5,300
Audubon Rd South south of Lyman Blvd 12,400 15,1001 15,300 21,400l
I
Audubon Rd North north of Lyman Blvd 3,600 4,700 5,400 7,600
1
Dally traffic volume IS near capacIty
2 Daily traffic volume is over capacity
12
Traffic Improvements
Based on the analysis in the Traffic Impact Study, the existing roadway network will accommodate the
traffic generated by the proposed Chanhassen High School if the following mitigation measures are
implemented by opening day of the school:
. Construct a traffic signal at the Lyman BoulevardlLake Hazeltine Drive intersection.
. Modify the existing signal at the Lyman Boulevard/Audubon Road South intersection for the
. addition of a north leg to the intersection.
. Construct the following turn lanes:
Approach LeftTurn Lane Right Turn Lane
Southbound Lyman Blvd at North School Access Bypass lane
Northbound Lyman Blvd at North School Access 200 feet
Westbound North School Access at Lyman Blvd Through lane becomes 300 feet
turn lane
Southbound Lyman Blvd at Lake Hazeltine Dr 200 feet
Northbound Lyman Blvd at Lake Hazeltine Dr 200 feet
Eastbound Lake Hazeltine Dr at Lyman Blvd 100 feet
Westbound Lake Hazeltine Dr at Lyman Blvd 300 feet Build
through/right
Eastbound Lyman Blvd at Audubon Rd S 200 feet
Westbound Lyman Blvd at Audubon Rd S 200 feet
Northbound Audubon Rd S at Lyman Blvd Build to add through
lane
Southbound Audubon Rd S at Lyman Blvd 200 feet Build
. through/right
In addition, operation of the Lyman Boulevard/Gaplin Boulevard and Lyman Boulevard/Audubon
Road North intersections should be monitored for potential improvements. Both intersections will
likely require traffic signals and additional turn lanes in the future.
Impacts to Re2ional System
The following corridors will be at or over capacity in the future whether or not the high school is built.
They should be monitored and appropriate improvements should be made when needed.
. Lyman Boulevard east of Lake Hazeltine Drive
. Audubon Road South south of Lyman Boulevard
22. Vehicle-related air emissions. Estimate the effect of the project's traffic generation on air quality,
including carbon monoxide levels. Discuss the effect of traffic improvements or other mitigation
measures on air quality impacts. Note: If the project involves 500 or more parking spaces, consult
EA W Guidelines about whether a detailed air quality analysis is needed.
Traffic on the area roads will increase (details described in the TDI, Inc. traffic study) even under the
no-build scenario. However, traffic volumes will also increase due to construction of the proposed
project. Consequently, there will be increased vehicle-related air emissions particularly during peak
trip generation times (7:30-8:30 a.m. and 2:30-3:30 p.m.).
Five intersections were examined to determine their "Level of Service" (LOS). LOS A represents light
traffic flow, while LOS F represents heavy flow (over capacity conditions). Generally, air quality is
only impacted if an intersection is severely congested (LOS E or LOS F). Based on the predicted
morning and afternoon peak traffic hours, if the Lyman Blvd/Galpin Blvd intersection and the Lyman
BlvdlLake Hazeltine Drive intersections are signalized, it is not anticipated that the traffic increase due
to the school will exceed air quality standards.
13
23. Stationary source air emissions. Describe the type, sources, quantities and compositions of any
emissions from stationary sources of air emissions such as boilers, exhaust stacks or ftlgitive dust
sources. Include any hazardous air pollutants (consult EA W Guidelines for a listing) and any
greenhouse gases (such as carbon dioxide, methane, nitrous oxide) and ozone-depleting chemicals
(chloro-fluorocarbons, hydro fluorocarbons, perfluorocarbons or sulfur hexafluoride). Also describe
any proposed pollution prevention techniques and proposed air pollution control devices. Describe the
impacts on air quality.
Heating of the buildings will be done through use of three natural-gas-fired hot water boilers, each
rated at 8.4 MBH (total of 25.2 million BTUs/hour). The boilers are designed to run on natural gas or
#2 fuel oil (for emergency heat). An on-site back-up power generator will be powered by diesel fuel,
but its use, and therefore its emissions, will be very limited. No significant hazardous air pollutants are
associated with this use, and consequently no air pollution control devices are planned to be installed.
24. Odors, noise and dust. Will the project generate odors, noise or dust during construction or
during operation? _X_Yes _No If yes, describe sources, characteristics, duration, quantities or
intensity and any proposed measures to mitigate adverse impacts. Also identify locations ofnearby
sensitive receptors and estimate impacts on them. Discuss potential impacts on human health or
quality of life. (Note: ftlgitive dust generated by operations may be discussed at item 23 instead of
here.)
Minor amounts of fugitive dust are anticipated to be generated by equipment during construction.
Odors may also be generated from construction equipment exhaust. Equipment will include trucks,
backhoes, scrapers, bulldozers, loaders, and compressors. Waste will be controlled by weekly clean-up
of the construction site, and water or other dust suppressants will be used to control airborne dust when
necessary. Noise, dust and odors from construction activities will be limited in duration, and will be
controlled by limiting the hours and days of construction operation to those permitted by local
ordinances.
Once project construction is completed, it is anticipated that the project will not generate significant
dust beyond current site conditions since all disturbed areas of the site will be covered with either hard
surface or turf/landscaping.
After construction activities are completed, noise will be generated by increased traffic. To a lesser
extent, outdoor events (e.g. athletic events) taking place at the site will create noise but the hours of
such noise generation will be controlled by the school event staff. Noise from both sources above will
generally be during daylight or early evening hours.
Given the location and topography of the proposed site, there are no significant sensitive receptors
immediately adjacent to the site to the east, south and west for either traffic noise or event noise.
Residential housing to the north and east of the site will be subject to some additional noise in the form
of loudspeaker and crowd noise during athletic events. These events are relatively infrequent, and the
hours of such noise generation will be controlled by the school event staff. Therefore, there are no
noise mitigation measures proposed.
25. Nearby resources. Are any of the following resources on or in proximity to the site?
Archaeological, historical or architectural resources? _Yes _X_No
Prime or unique farmlands or land within an agricultural preserve? _Yes _X_No
Designated parks, recreation areas or trails? X_Yes _No
Scenic views and vistas? _X_Yes _No
Other unique resources? _X_Yes _No
If yes, describe the resource and identify any project-related impacts on the resource. Describe any
measures to minimize or avoid adverse impacts.
14
Designated parks. recreation areas or trails?
The project site is adjacent to and west of one of the three parcels of Bluff Creek Preserve (at the
northern portion ofthe site) and is adjacent to a park (at the southern portion of the site). As
mentioned in question number lla, a walking path will be created to link the high school to the
existing trail in the park area. The trail connections will require wetland impacts that will be mitigated
on the site.
Scenic views and vistas:
The construction ofthis project will present a new feature to the view from and to Bluff Creek
Preserve as the current project site is predominantly developed as cultivated agricultural land. In order
to minimize impacts to scenic views and to preserve open space, the majority of the parking lots will
be located along Lyman Boulevard, thus maintaining a visual corridor along the northern portion of
the site.
Other unique resources
Two large wetland complexes are present along the eastern portion of the project site. Potential
impacts to this wetland complex are discussed in items 11, 12, and 17. Additionally, Bluff Creek is
near to the proposed project site. Bluff Creek is a unique natural resource. The City of Chanhassen
established the Bluff Creek Overlay District (BCOD) by ordinance in 1998 to protect the Bluff Creek
Corridor, wetlands, bluffs and significant stands of mature trees through the use of careful site design
and other low-impact practices. This parcel is partially encumbered by the Bluff Creek Overlay
District. No alterations are allowed within the primary corridor or within the first 20 feet of the
setback from the primary corridor. All structures must meet the 40-foot setback from the primary
corridor. Disturbed areas adjacent to Bluff Creek and to city park land will be restored with native
vegetation. Additionally, the project is designed to not only meet existing standards for storm water
and construction water runoff, but the project is designed to exceed these standards. Additional
protective measures will be added during construction, and a treatment-train approach will be used to
ensure that Bluff Creek will not be adversely impacted by the project. (See question #17 for additional
information. )
26. Visual impacts. Will the project create adverse visual impacts during construction or operation?
Such as glare from intense lights, lights visible in wilderness areas and large visible plumes from
cooling towers or exhaust stacks? _X_Yes _No
If yes, explain.
Visual impacts will occur from the presence of the school and associated structures in a previously
predominantly agricultural area. Visual impacts will also occur from building, parking lot, field, and
stadium lighting. The City's Zoning Ordinance contains information that addresses outdoor lighting.
This project will adhere to the lighting conditions contained in the zoning ordinance as well as the
requirements for buffer yard plantings around the perimeter of the site.
27. Compatibility with plans and land use regulations. Is the project subject to an adopted local
comprehensive plan, land use plan or regulation, or other applicable land use, water, or resource
management plan of a local, regional, state or federal agency?
-.K.]es _No. If yes, describe the plan, discuss its compatibility with the project and explain how
any conflicts will be resolved. lfno, explain.
The City of Chanhassen has an adopted local comprehensive plan. The current zoning of the site is A2
(Agricultural Estate District); the site area is shown as Office/Industrial and/or Office/Institutional on
the Chanhassen 2020 Land Use Plan. Rezoning is required for the proposed project. The rezoning
will be consistent with the land use designation (see Figures 19 and 20).
The City of Chaska also has an adopted local comprehensive plan. The current zoning of that portion
ofChaska immediately adjacent to the site is Planned Industrial Development, (PID-I); this area is
shown as Industrial on the Chaska 2020 Land Use Plan. This industrial park is already essentially built
out, and so no near-term land use changes for this area are anticipated. The proposed project is not
inconsistent with the adjacent Chaska land use plans (see Figures 21 and 22).
15
The City of Chanhassen also has an approved and adopted water resource plan, and the proposed
project will be subject to the requirements of this plan, as well as other development ordinances
contained in the City Code. There are no conflicts anticipated.
28. Impact on infrastructure and public services. Will new or expanded utilities, roads, other
infrastructure or public services be required to serve the project? lYes _No. If yes, describe the
new or additional infrastructure or services needed. (Note: any infrastructure that is a connected
action with respect to the project must be assessed in the EA W; see EA W Guidelines for details.)
Road improvements (turn lanes and signalization) must be constructed in concert with the proposed
project to serve the project and accommodate increased traffic volumes. These improvements are
described in the traffic study (TDI, Inc., dated October 2006).
Connections to the City's potable water and sanitary system will be made from nearby existing
connections. As part of the development, truck water main must be extended along Lyman Boulevard
to facilitate the looping of water for the high schoo1.
No other public infrastructure or services are required to serve the proposed project.
29. Cumulative impacts. Minnesota Rule part 44/0.1700, subpart 7, item B requires that the RGU
consider the "cumulative potential effects of related or anticipatedfuture projects" when determining
the need for an environmental impact statement. Identify any past, present or reasonably foreseeable
future projects that may interact with the project described in this EA W in such a way as to cause
cumulative impacts. Describe the nature of the cumulative impacts and summarize any other available
information relevant to determining whether there is potential for significant environmental effects due
to cumulative impacts (or discuss each cumulative impact under appropriate item( s) elsewhere on this
form).
No cumulative impacts are anticipated as a result of the proposed project. The proposed project is not
anticipated to induce any specific related development or impacts that will cause cumulative impacts.
The area to the south was previously reviewed under a separate Chanhassen 2005 MUSA Alternate
Urban Areawide Review which was completed in December 2003.
30. Other potential environmental impacts. If the project may cause any adverse environmental
impacts not addressed by items I to 28, identify and discuss them here, along with any proposed
mitigation.
There are no known or anticipated environmental impacts that have not been discussed elsewhere in
this EA W.
31. Summary of issues. Do not complete this section if the EA W is being done for EIS scoping;
instead, address relevant issues in the draft Scoping Decision document, which must accompany the
EA W. List any impacts and issues identified above that may require further investigation before the
project is begun. Discuss any alternatives or mitigative measures that have been or may be considered
for these impacts and issues, including those that have been or may be ordered as permit conditions.
The most significant potential issues associated with the proposed project are:
I. Traffic: There will be temporary impacts to vehicle traffic due to construction-related activity
during excavation, construction materials delivery and storage, and tie-ins to existing sub grade
utilities. These predicted vehicle traffic impacts will last for much of the construction life of the
project, and will be geographically associated with the phasing of construction. Some of the
potential impacts can be mitigated through implementation of City ordinances relating to hours
and days of operation, noise, nuisance conditions, etc.
16
Post-construction traffic impacts are anticipated after the project is constructed, and are detailed in
the traffic study. These impacts are anticipated to involve slight decreases in Level Of Services
(LOS) in the project vicinity. Plans for mitigation of these impacts include adding turn lanes and
signalizing of nearby intersections.
No additional traffic impacts or issues have been identified that require further investigation.
2. Wetland Impacts: A total of 1.66 acres of wetlands are proposed to be filled as part of the
project. Mitigation measures wiII include on-site replacement (new wetland creation, as well as
public value credits) according to MN Wetland Conservation Act rules, which are administered by
the City of Chanhassen.
No additional wetland impacts or issues have been identified that require further investigation.
3. Storm Water Runoff: There is potential for impacts to Bluff Creek and associated wetlands from
temporary and permanent storm water runoff. Potential impacts from temporary storm water
runoff include those from sediment loading during and immediately after construction. These
potential impacts wiII be mitigated through MPCA storm water and local permitting.
Potential impacts from permanent storm water runoff include those from performance of storm
water engineering design and construction. These potential impacts wiII be mitigated through
local review of design plans, as well as on-site inspections during construction.
No additional storm water impacts or issues have been identified that require further investigation.
RGU CERTIFICATION. The Environmental Quality Board wiII only accept SIGNED Environmental
Assessment Worksheets for public notice in the EQB Monitor.
I hereby certify that:
. The information contained in this document is accurate and complete to the best of my knowledge.
. The EA W describes the complete project; there are no other projects, stages or components other
than those described in this document, which are related to the project as connected actions or
phased actions, as defined at Minnesota Rules, parts 4410.0200, subparts 9b and 60, respectively.
Copies of this EA Ware being sent to the entire EQB distribution list.
Signature
Date
Title
Environmental Assessment Worksheet was prepared by the staff of the Environmental Quality Board at
the Administration Department. For additional information, worksheets or for EA W Guidelines, contact:
Environmental Quality Board, 658 Cedar St., St. Paul, MN 55155, 651-296-8253, or
http://www.eqb.state.mn.us
ISD 1I2EAW
17
.. _....__._---_._....._-.::--...._.~.--'-.....
Post-construction traffic impacts are anticipated after the project is constructed, and are detailed in
the traffic study. These impacts are anticipated to involve slight decreases in Level Of Services
(LOS) in the project vicinity. Plans for mitigation of these impacts include adding turn lanes and
signalizing of nearby intersections.
No additional traffic impacts or issues have been identified that require further investigation.
2. Wetland Impacts: A total of 1.66 acres of wetlands are proposed to be filled as part of the
project. Mitigation measures will include on-site replacement (new wetland creation, as well as
public value credits) according to MN Wetland Conservation Act rules, which are administered by
the City of Chanhassen.
No additional wetland impacts or issues have been identified that require further investigation.
3. Storm Water Runoff: There is potential for impacts to Bluff Creek and associated wetlands from
temporary and permanent storm water runoff. Potential impacts from temporary storm water
runoff include those from sediment loading during and immediately after construction. These
potential impacts will be mitigated through MPCA storm water and local permitting.
Potential impacts from permanent storm water runoff include those from performance of storm
water engineering design and construction. These potential impacts will be mitigated through
local review of design plans, as well as on-site inspections during construction.
No additional storm water impacts or issues have been identified that require further investigation.
RGU CERTIFICATION. The Environmental Quality Board will only accept SIGNED Environmental
Assessment Worksheets for public notice in the EQB Monitor.
I hereby certify that:
. The information contained in this document is accurate and complete to the best of my knowledge..
. The EA W describes the complete project; there are no other projects, stages or components other
than those described in this document, which are related to the project as connected actions or
phased actions, as defined at Minnesota Rules, parts 4410.0200, subparts 9b and 60, respectively.
· ~~A!~dis1ribUtiOnlm.
Signature ~. Date J} / D 3jD~
~(tA- ~ Y\-lLr
~ <LV\A'~
Title
Environmental Assessment Worksheet was prepared by the staff of the Environmental Quality Board at
the Administration Department. For additional information, worksheets or for EA W Guidelines, contact:
Environmental Quality Board, 658 Cedar St., 81. Paul, MN 55155,651-296-8253, or
http://www.eqb.state.mn.us
ISD 112 EAW
17
W Ii I G H 1.\~\. T CO.
--y. _~~~@~ ~_~_ :_J[~_2~ _~~~ · , · , t. .~L.: ~ ~.- -'~~i~~'
~ f1I . ~lj--~., ." ~ n 1.1,. _-=-x;;., \ ~..lllJi;_6f3~- ,.-~ -.... -~..- ;,-:-:~ .:--
(!h. \ . . ,. 1 ';& '..: ~ .: <ID R' .... IS .~... ~ ~lE;Z:3wj .=t~ (J 1:: - ~:. -, J -~;
,-- I~-'" I- ,;-.l ~. _. :'1 ~~I:. . .@r..~.o .1. :"\ ''If.~~j' .~~~~~~~~~ ..: ~ ~l
· ~./'''. '@' I .~.. . '-'."..' · '~'""."~U~..,. r~ --," .~,.. ~.::::
.e, : r :-: .~:.' .~...;=. }-.t~2 - '~_.\-~ 'I,)~t:~~ :~~~.~l~,,~~.~ : n~:.~t~
. ~ . ~-". _ ~ . .' . · r..t; 'r,;!:~ ~~~.:.-~Jj~jJ.t1.:.~.J;~~~~ J;j ~~I"T< Jau.SI2
~.'" " .--. '~:" !A'~' -". ~~ :.: II ,~. .1 . p~ !.., f;'(~~<~'l ... ..: · ~T"I""i' ~~:~ !~~ ".'
~"I ' · ~'''' l8) -~ :.......<;:r,... '.t Ir_ . I' 1 ., 1"",. ,"z.!'t .' .. . te '. · " '~ ;:;1
<: "~~.. (J ..L . ~ Y' 1"'*'70 ci D....., -t~. A. -'1' I ~.R . ~ iN ....... :-:
~ ~~~t - .: ~ ...3_.,.. ".:f ~L:: .,.; : : ~ \.. .~. .........;' .. :~ ,:; z
';'.~." ." ,t=7Y!!l !!.~-U/~".~J~ ;l; J ..~\~-t .:. '~f-f~: s
~~ _/..~ I. ~I Irl..:.."? ~!\ D~. ib..... · ',. '}:~" nw.. : · OIls' ...
: -...: > ~l . U" ~ ,/..." , ,,'4 . / ~ l' f()}.. ~ .......: ~ ':." .~ttJ. ~ ,.~.~
- ., +. · r' ~ I..... . . +. v~~/ . ,,'- I .+! J... j::t}f~~J"""" , ';" --
m\ _ ~. -"/.1: .!'! 0 ,'" J. ~ I--~.~~. "Jt!. ;. "~... ; .:;";
· ill · ~Q~ ~-- '/zj\ e' I I.' .fzt.-. t .", 'u 1 t ~.~ :"' :::
· 1 . . -. . . ..::i " '.::J , m ." >>'. u Ii,.."-..,. . .;.Q] "::: ~";) HEN N E PIN ;r!. C O.
. · I , y..,,~ ~ .' ."'t ' ~t.J. r;- ~ a~~" ; ~ .~~ -:~" I" "11 .~'t"~ 1:::: 4!' '# ~ 'n1~' '{D~~ ;j
't '......- " " · -c"" ~~. ,'--,~ G ~ · ."s .~"" f 1 '{ "u I R ". I '"';t~
~~:~: ~~~~::1~. ;. ~~ , I. /;;~::;~ ;~;:~~~I ,: : ;--~M~ ~;~~ ~{f~~~~~~~~8k~Ht~:~I~
~~ ~ ~7P;;:;:;'~J~' '/" (. :...::,,:;;:. ;;;:."+' ~W~~ ~~ ~C-=-"~'j ~~i~t".;j~ Approximate ' . ," .' I ~j:i
~i~: ~.~. :~~:~:"I( " ~~;. :'~i~~~~~~..~~'~f; ~"~?'~t~~~~~~ ~ Site Location ~:\~~~~],
.tt'~. I · f:.1 .' · . · ? .' · I ~ .~~:. :.!.. ;~:I1:r:*.; ~ ~ I j ~'ii ~ ~~ ;; 3 " 'J'~ ~~~){ ~ I~^.!~ ~ ~ ~i 'e. ~ ~ 'J3 m1 _ ~~:-: ~~1}
-~I;-'{~ · .,:' ~C.:: 'A.' M.r;i:!:Hi .N'" ~ ~_ .~ ' .~ ~~"'~I~~ r~~;.. rlA>fft:j~~ ~ ~~( - : :-~~ ~~ ~r;..~ tp\ ~:;~.'~> ~)t~;~~~:~ ~;r .t1;!'.t~1 ~~~:::t:~~~:
.-! ~.....~. @: Jf. ~. \ ~... IT" .,.".....~ 1.- ~ ~_.. ~' oft . ~~'I~,'r. ~.... ~ ~ e g 0_.21""~ . :['-::" ~~~ I.- !'!"., - . . ~ . MQ~"l\,;-:
_ ~ ;.<'~, .:., . [~~f:.~~' ';:-: .@.... f-"-\ .. << ~:iID. @ ~:~"':-:::~~~.~ III ~_-L,-"~- rl~('e"'n."GfS..J r:'~.r--~.I'.: ~ .:~:"~~ ":!.J::~' r.. -. ~.
;l .' ~~. ' I ~ I ~; n · }. ,~I' .'1- \ '. tv ~~. · 'c : '.9' · ,~ "'c.:: w~:::::ii1. ;:::~ .K 'ilIl.....1l'1 o'~ N' ~.,;;;:~ \, 1 :::; - :-.. i.: . ::"" .., " , ~.':J
.- . r-=i. .... ~~ 5...:..: \. fl ~;1 · ~ ~. .. <i.~ ~ ile ~r ~(.. ~~ It~~~ '.j" -1 ~m;:. . e ~: ill~ ~~"': .~~ L~I ~ \, I ~r ~t~(:;2" ~ ~~i@...l~ ~~~::~il
'l~ .'~ ><:,1 l~f''''':'t!;'' · · ..a~, H '~':'.':': "'~'!" ~n21 . . .11-i-\~"1b....1'. · 1"..I~~t~t~~\~~ ..... f" t:'G.~:\ ""jj ~It' ~r
- -':r'!' 'iT' ::. ~ -;.' '.'~ '.' ,;'i:. .." :~. - '~..~. · · ~r. .~~~.:h~~~t:~ ~:.~~. ~~\.. 11i:1[f.;~i;~=_-Mj'~~~~~;?~ r: ~~'$ ~ 1L{~;~~= ~k
...' .... (. '.~ '-. nW .. .(I;~~ . ~;. r'..21&,;b' lI!. ':r;::~.~iti~~~::::Ji~I'.i ~:l;~. ,-,::J~1-:~oJ~;;rr~ ~1~J.~k: ~ ;.~~~ 1f:n?~~' .- - .,IITo
. .' · ~.' .' .1~n~:~'S ~ o. -'J;.lO" _' ~"..~\~~.4O . "/1;~~ J~"":t~~4t~ ._..I:~""-.1 ...~ .~r@ - .J~ l .~~~.., ~; &. r7~~t~ I( ~ (r:~
. ~~~~r--~ ~ ~'iA'" '~'I' · ..;..~ ,. I · .' 1 ~~. .' .r' · ','~.~. ~ I ~oJ.:~' y- :, ~ Y' ':: ~~I 1 [ill <':- @) f'::r.:':~" \~~
-- Jl~ "~.., ~ l~yJ~':~,-;;~f.:: :.. -ie~" _ @t '~-~~~li~:~.. ~,~~4~ ~~I-:-f~ .:,; '. · _;.li..~- ~ ".J..... If. T.>" 11 \ ~~~~:~ ~ ~: }~fi)~~
I 1 ,"- ~i~Al.~4i.,;.~.... · ....... 2S ~~. .'. os ~ · .J.'".35 A~l .1'~~};~...,~~~" ~ .~~~~~~:}::.~~.~;,-. ... ~ ~.. ". ~r;'':j
ro"htD~ l'.' .....:.lI~<"".....NOI....OCIU~:.-.:-;.~~~ ,-;~~~r~"~: · ..,v~. · 9.;. -i....;';..~~~; ~..YJ-.-;i~..~~...~~:.:i~,- f~I,~~?~~~,:,:::'::,!~~r
(ir T!~~ ~ · ." -1'CJmi.2!- . 5.. ~~~ ~ . \.. · /.~~1 r-. . r;i · .' ~.L .1-.. ., ?"'". c.\t~':I- ~ .. i ~b..~' ~~~~ ~ ~~ f;'::":l:.}~:r.~~.... . ~~
_.... I ~, llJ Iuuuu~ . t. · ." r 1/ ...--~~ ,~. \ ;~... do..o~, 1':"',-1 ~~I,."L',.: ;~6?' ~'~r ~,". - -
_.... , II, . ~_ ,,_ . . ,.".~~;.... ~_' ~"'.~ ~>.!-.. .~ " ,-),.' '.It,. ~ .. ." \llI ~ I ~, 'I '" "'. ':;L..II! ,:. #. W ;.:":' (~l NMaW'A
. ... tc..~~ . . : . "i'J-.r ~ ...... . J . I. ~ . -.. ~~.....;~ j. .. ~ ~ . . . . .,.... t. ....v. . .- t. . . · ." ~ ~
,-----." . ~4~~ .. . . ~:f!frr-: r'~~-=:)--)::.,'~, ... ,~-,-., -:-t""' ~~ .,AIi.~'lI' 7_' :::.~~:fJ ." ~~"I~ ~:::~~ 112). iF
:I~.~ ','.\: J. ~rjr~ .~ \~~~\.:1 ::~ L:: .' . ."~.: ~;J~: :', ~ 1I~1'&:,}~ ~"~~~" .@c~ f..,::~~:~i~::::'y~ .y
. '. -<~ - ,~.~,.I ~ ~t~~:'1~' ,1: ~.' · ~.;~ 1: ~_~: i ~ l?~' ':'. :~~ OJ,"?''; .. :. " I:':':: .:e:~ _." ,:~; ~'~...e;o,...""
. T,.,.,.. . ..,. .-1..' . _ ..,. ::.~ ':ifL:'r~ d ;.-~ .1- . I ..' 1 ~ "'::.I>il'!ii'-::;'" .~I"'~ <"". :. :i: ::.: ::~::oo :. :.. - & '\.1 '..a "',. '''' "'''
~- ...~. IJ"'-.~ ~-.. ..:-:~iW'''''~.'lJ Bi' · (1'..31'.. ..:..~ . .,_1! t,' og.--l . 'I~' ~~ . D. .a.:...~... .., _IN oJ1J' I'::::' '.:::~~.y~~rY ~
- .~.:;. "0 ~ ~i~~~J~,'~~~~~;;;c1I~"~ I" [f.,....:I\. ~~.~~)' .,I:J/#K~. '::!;';;~:~i"~'~;?;~~/" "'~~
... - .'. . ~ ~~' ,,? ':.... -'0' ~. ~.l: '. ~ ~ " .. 51... f'i. ' ~~:~ ',~~\~~~'" ':::~:>:::":5; .... z .~~
. "Q' 'm 'Y. Oll-O"r r~~Zl;" !. -; ~."."."B. E N .;T .:..~.~~ ~~'~,J~.... ~,~ . ~~~ ~ d. ~~ ~~.. ~ f~~r:~:~:~:~.:::?:; \3
- .' of-, ~., ::.' t~i,I~;" ~._'.< .~. ': · ~ ~ ~--:-;~: "~r.~~~ :; ~. '~,~ --:.rJ~ ~(~~:...:.~y -=-.
.' . A',M. 'R.~ I Oi .!A ~~ ... I . .~ I ~~ ..r" · . ' .~ ~_.~~" ~ l' ~~.. ,::::':-:~l-l 4.U
~ . ...~ _.l! I; "q~(. . (ij> ,'~ ..1.1: . @. .',~' . ~ e ..:!! j~;t~_. :=='7 ~' . -+ iF-~ ~ ~ ~.~ ~ -i' ~ IHIt:.:: '7~
~l ,":'-' !!!.;., I cl i?'~~@l I'. · . - :: .@..UIII\-"_' @ ~J B'..!:. -. . · · -~~ ~~ ~bf '~!..:..=;; ~~;"'-''iJJ:t
- ~~ .... ~:.-~. · .1!-.....;~.tJItQ. t 1 ,--" .-'-- '"'~ ~ · · '. · 'r--:-... ~... · .. f~. '. .:-. .,'. -, rR:{~,
.d . U. e.- ~. .n, """"~:jIf.-... ~ ~:Io, " ~. " ,... ~iA~~~~~.s: .. I .' . n I,;> ...~ . ff ~ _ '1~~
_~~ .oJ1 I- -W" : .. · rp -; ",:_ . "\~;.."l:. ~/~.~~,,: ..... . @'R"_~-~.';J 9 · ,'~' :' 1/;/ tJ
(l!)'i ri1 -. ...~ · · -tlil' I -:-. ,. . -,'. . 1. \,. ~ @-~ ~ -'~'. I.~~'-?\ .~~.. ~ ~ h ~\ ,.
i I tlJ Z$ R 26 W i - .... I ~' . ,JO""i "~. .1 -1.--- .---..... L.V. .~J, rt:-'f~ . 1.I L~. X:l:lS~,a
li.f, S sl ~ -......,- I ., - . , , '. ..,' ~ ~ r->~~' r -. .
~ tnIC' J s r B ~ C _ "1 \. · ..' >;-~ t~ I . I · .r.-~" . 's ".A.,..t~~~ ~ " . · (ft~-s....
,,~ LEY O. ~ 1'@~L.n ~. _'_ ~t~ . .~f! .,}___: L~ · ~I:''', ty ~~ 'r:r:r;-. ~f:dQ. '(:F v~~ I d!:I'if!.J. r,l
m' T tWIlfi'H"/A .N C O. ell It. .W ' .'.1' ).'Z~~; . - 'I · ~
.~ _ ~. ~ . . .' '. ~'L t...R}~~~' ~.;l... S ' c. 0' l,t eo (!:;'
C ,),@:'i. ~J:.'. ., , '@"'_l{--.. l~~r1 oJ ~ h~ I \
~ "'-l) ~ ' .', Hi . j". ~,.!.......t)" '.2 .. J" "~. ~~ J,r 4li" ~
. . .'". ~:t. ... ~ ~ '. r. ~ r .' · 'f~"~ J !;~ ~.# ~ "
'!l~ · .,1 ~ ... ~:. .~!- I tA + LL~F5ft -~: '
~ I Il2fl. ~: ~ I _ ~ ~..;-:.. · ~.(r!,"/ NI.IoflESGTA
~ 1O"W ~ = ~' . '1-.' if~~. Fl 24 .
I': S I 5 L E'( C O. lj ... : _ ").~ II : ~VolUEV t:l
T; QnIIlI"'_~ : ~~ ~ ~/- ~L
~I ~;,~ ....""', <
~'~fJ~~ . ~
~
!
N
SM
BRAUN
I NTE RTEC
Carver County Map
Environmental Assessment Worksheet
New ISD 112 High School in Chanhassen
Chanhassen, MN
Carver County General Highway Map
DATE: i 01 \001/../1 II li"Ii
JOB NO: BL-Qe-Q4539
SCALE: 1.5"- 4 Miles FIGURE NO:
DRAWN
BY:
JMJ
1
I
8M
Site Location Map
Environmental Assessment Worksheet
New ISO 112 High School in Chanhassen
Chanhassen, MN
DATE:
JOB NO:
SCALE:
DRAWN
BY:
I NTE RTEC
USGS TOPOGRAPHIC MAP
Shako a, MN
1 0/19/2006
B L -06-04539
1 : 24,000 FIGURE NO:
JMJ
2
~, -
~.",~ ,-y-
f? "'-~- #
J~== 'Tl1
...~ \
'~
,
\~
Ii
I
}
I)
Q: II
f#
if ~I
i~ /1
1'(
TOTAl. PARKING \ I
1.003 PARKING STALlS .t )}
140 EVENT PARKING /
,,"/
f
(
II
if
r
~
~
~\
,\~ .
~\\
-~
,
\\
'~
\~~\
"
~
'~'"
,~~
~~,.
,~~
\
-.. ----'.....r::!a (7 .".- - -
)I(
1:>
c(
SM
Schematic Design Site Plan
Prepared August 24, 2006
Environmental Assessment Worksheet
New ISO 112 High School in Chanhassen
Chanhassen, Minnesota
!
N
Q - - ir"'scq ~
Schematic Design Site Plan
Prepared by Rozeboom Miller Architects, Inc.
DATE: I
JOB NO: BL-06-04539
FIGURE NO:
DRAWN
BY:
3 i
--~
JMJ
RAUNSM
I NTE RTEC
Aerial Photograph
Environmental Assessment Worksheet
New ISD 112 High School in Chanhassen
Chanhassen, MN
Aerial Photograph
DATE:
JOB NO:
SCALE:
DRAWN
BY:
B L -06-04539
FIGURE NO:
JMJ
4
~
". tl
':' ,1 ~
;;.~it ,.
'tl' .
'<' 1
~.. 1- - ;"t CO, ~
· ~~vj,~tl~~;I<r~~.,~
~~I"t~~~~~' ~
:h':'4
-=--- CIa
..~:;: "j;
'.... -. ....
, VOCAL
.,' .l^:rt)~M';J Ir:'~i'~
.~ ~~'...,.~ . ._~<~ i~
'l: iii'
";' ~~;, i;.'>
~ '.l
t<,,~;; ~1
,l( ~ ~~
"~1
ld~'l: ,j;~e,
~.,.,}.n~~~g
". ;' ~'.~~:: -- ~? --""i~' ~
CR
"..l ....
. ,
;1'. ~~i ' "~-". · ',"','l}J':'''' "s' ..">. E" .;
~. ;;'1"1.". .. ... ~
.:: '1 :~:) . i '. "'~ : ;. _' ~'l'
CR
." 'f-.,
'.
~'\.
'\ ~
~ ~'~
~"' -:/~
1;.:
'f '.,
;;. :"! '. ......:':;
. .,,--~
~,:;,'"''
~ ":
\ ~~
:'~~(I'I::'.~I~E' ,"_:r-
~, A~~~ ~~.~:~~.
~ !'t~1I. $
.~ ~:".,
'.t~~ ., ~
, j
"'",
~~~
" f
, :>
:.0 .~. w
,~,,""~' "1
- ..... -~ -~ ~....
"'~.. t ~ '!:- ,'l' ,.0' "l;,,' '
~.~~t.., :!:' ~:::'~~:$ ~ .~ N. ,
he ~ ,- ~~.., .~ ~ ,"~ ~1
." ~~ii.~::;,~; '~,~ ~
;, .A:
~ - ~~
.l"
':'l ,i~
J)o, ~:;
B
First Floor Plan Schematic Design
Prepared August 24, 2006
Environmental Assessment Worksheet
New ISO 112 High School in Chanhassen
Chanhassen, MN
First Floor Plan Schematic Design
Prepared by Rozeboom Miller Architects, Inc.
DATE:
JOB NO: BL-OS-Q4539
FIGURE NO:
SM
I NTE RTEC
DRAWN
BY:
JMJ
5
0~.=:n' t~[\.~.~.:)..
-----~
... .. f.llCC ~
,--..n.l ~ W~ :.~t1,)I ':;''':UI)
, ~I.~__"""'!u.
.. -..... - ..........~
~
~_.._.- - ..-..--... ... ............. ... .............. .. .....
f'IIj"l~$Iitl' 'loA: ~ Ntl... r.atlQ$
.....WT fMQ . ,....~,
~---
~---
10,,1;'4 $I.;J1111J ~;
L ~t... I'~ ~ :lOQf'
_ ~ <l:U"lKI'J!C
8~~' I:Ll:w.rlOft
,
N
B
8M
N
Views of North and West Elevations
Prepared August 24, 2006
Environmental Assessment Worksheet
New ISD 112 High School in Chanhassen
Chanhassen, MN
North & West Elevation Views
Prepared by Rozeboom Miller Architects, Inc.
DATE: I
JOB NO: BL-QS-04539
FIGURE NO:
I NTE RTEC
DRAWN
BY:
JMJ
6
,"
~,
1
.,~ '"
....
fENt l"Q.Q -
, ~a
.rjlbG~. ".~ ~</
~" . _!'em cr~~'
~M. ~?~
{: dt .~
~ .tf-Mr~ ~ ~
...' ~1\ ;;J~
:'.~..' l_tJ..~~ ~;; ~<
, P!1W:.d .. .. -.-
. 'j,. ~ t\;'\
" fE~ rE~t:..
--~ ~ ~.
y ~ u~
~t.It
tr- 9f.Mt ~ . 'e
. - ~.; '" .
I ~~~''''''''-
~ ft-
,~~~.
~ ". ~ :~. '3...... f1
~~ ,- l ,;~ ~~ tLMtJ
"W~. ., Jl t, · tt . · ~ "0 ~
.~ _ rw;'-' ,,~'. ." - ~'~.>~~""fMtd. " ·
i~~ c.J";~' i~ ~T;\ . . ~ .:-.' .
l~~ ,r.j~~~~~-- ~ ~ .~.~,~
~ ~. p~' . ~ .' :"
itwc~. . r. ....~~..... ~~' :.~.-.", :_.;;: ".~'~
'\~~ ~.' .'rErEtir. ,'e: · ~ .... ".
l. ~~, 'I re" .i
~. .~--{J ."
PlW f't-MA
p-
~.
~~
BRA NSM
I NTE RTEC
National Wetlands Inventory
Environmental Assesment Worksheet
New ISO 112 High School in Chanhassen
Chanhassen, MN
DATE:
JOB NO:
SCALE:
DRAWN
BY:
BL-06-04539
FIGURE NO:
JMJ
7
RAILROAD
WETLAND 'AI (6.03 Ac....)
CONSERVATION
EASEMENT (1.50 Acres)
LYMAN BOULEVARD
WETLAND '81 (17.94 ACrM)
WETLAND 'C' (0.23 Acres)
ELECTR~ALSUBSTAnON
LAKE HAZELTINE DRIVE
AUDUBON ROAD
BRAUNSM
I NTE RTEC
L
/-
\.
\ \\.
\\,
\
;;:> ~//'
. !\o~ .......
~pY' /
C>\~,o /."
J,..w, Q eo~, ..../. " ~
r: !j \- .,..../
· t'/ r~ .'"
t~/"Y' ~,. .r:1:,
~'-__, f ~ o.f/ / /,' '\. '\.
\ /<;..S;;;<:.. / . , . ,
\, ~r~"'./ -,,' .....
~\ "(-""
//"/~~.\~~~fl~
\:~:~~\~
\~,:~
,~~~~"
(",:""..::.;.'
\\
\
...~~..:..:\
,I
f
~
'I
Q9W I
\~ Q~ f
fi
ii
\~f:~\
\~;,~\\ ~tl d 0
~~,~; an
't ~~~.
'~}}
,~
\~~. \\
':\\\\ . - ~ ,'~
\\ \\ D fA r ::,.- -. - -.....~~
\\ ~ etISi18 ....
\I~., " C -, R=-""'--'~'l
'.' '. "
.~..\;' i jl == 1
\\~-t'""==C:::-'},-I--=.J " ., T:~ \ ~
.~ -1-~ ( . rl '~',".. l ',---
4;rs~...~~\',- ,I -:, I '!', ~!< .,
~~~ ',"~ ".0; ~l I" ~ ~.~, . . _._~-
/ '~~~~~M
---'~'fl ---'- f"-
I " -~-----
~ i
f~ I
~
,
\
\ /i
\",,:;.,./
N
Delineated Wetlands
Environemental Assessment Worksheet
New IS0112 High School in Chanhassen
Chanhassen, Minnesota
Delineated Wetlands
10/2712006
BL-QS-Q4539
FIGURE NO:
DATE:
JOB NO:
DRAWN
BY:
JMJ
8
· t~
~it
\
\
\
\
\
.
\
\
,
. Approximate Fill Locations
SM
Proposed Wetland Fill and Mitigation Locations
Environmental Assessment Worksheet
New ISD 112 High School in Chanhassen
Chanhassen, MN
From AJA Associates Inc.
DATE: 11/2/2006
JOB NO: BL-QS-04539
SCALE: FIGURE NO:
DRAWN
BY:
MRF
9
J
'9
>
I II
LEGEND
Protect~ w.t.,,:
BeStnl are identified with. number and the letter l' __
.. pH .
Watercourses are identified w;ttl a heayy, dark
line.
Public ditches are identified with. dashed line.
Protected w.tIMda:
- Identified with a number and the letter' 'W" .
This mep ia intended tOf use with a .ep~8te descrip-
tive list. The boundaries of the protected water bodies
shown on this map are p'otted as accUfately IS possi-
bitt. consistent with the map sca", but are stil ap-
proximate. A prot~te<:l w.'" body boundary coin-
cides with the ordinary high water mar1t of the water
body as defined in Minnesota Statutes. Section
, 05. 37 and is determined through DNR field inspec-
tion or survey_
Protected wlter. and wetlands ar. subject to Minne-
sota Statutes, Section 105.42, which requires that .
permit be obtained before making any .UeF.tion in the
course. current or cross-section of these waters. Con-
tact the DNR office in your .rea for further informa-
tion.
SM
B AUN
I NTE RTEC
I 2:J W
!
N
Protected Waters and Wetlands Inventory
Environmental Assessment Worksheet
New ISD 112 High School in Chanhassen
Chanhassen, MN
DATE:
JOB NO:
SCALE:
DRAWN
BY:
BL-oS-o4539
1"-1 Mile FIGURE NO:
JMJ
10
~/~
J -}
/ i
j.--....J
...... I
'V
-r----..-......--.---'-..~..~ .r..~-....._..._.._._-
i i:
! :
! i
! I
I i
1 I
t---1
Bluff Creek Overlay District
D Primary Zone
D Secondary Zone
- Bluff Creek
DRAWN
BY:
JMJ
11
I
i
i
I
I
I
i
I
I
I
I
I
I
I
I
--~~
SM
BRAUN
Bluff Creek Overlay District
I NTE RTEC
City of Chanhassen Bluff Creek Overlay District
Environmental Assessment Worksheet
New ISD 112 High School in Chanhassen
Chanhassen, MN
DATE:
JOB NO:
I 6
BL-06-04539
FIGURE NO:
SM
BRAU
~i:l1"Ir.i ~O~..j
"".n.,jY 11' : (;J"ttl. :r<:(lt.~o.t... !kN.)(~
ni )o('l)'y rV"..>>l1
I;\".;.::y k,,,,,, t ...,J'I \l.f:,~..,.l v:.ic.'\r
C"""".....lI\'-t;,;;rd..n eo.......IQ<. L 't:. 6 ~.., .;cn: ~l<>~,
~""...,lI..-HI~'1'~" ,,,,,,,pI..,,, "t:;.' 12 pc,......, "1",,,_
~C",.,,,..,1IC" H<ty;", !;(JI'.<iy :1)Om., 171'" Iii ~.>:"." ~Inr>~'
I,),-,,,:;v.li,. ,"!:)~..k'fl ',,,,..cy I",,,",,", f(!." 2<; ~f'tN" -I,,=--,
!'"... ,i-c-'." -s.la., .:--I~ 1i.."C...Jm
:::.l<',,,'e,\ \i r,. d,,~' It.:wn. ';"","":;:\101'1'-.1
'J":l<1ro , Ir,. (,kl IO,')rn
C,.,,,,/,,,,' ~I'l.,. ::In\, '<>:%0'
<Co-.f,__.,. st~"" ,l.o., t",::.1'\ tT"'~~:'I.. f~N1
CCf',jv~~ '.ih., ,k~.t too,,"
'-0'00"" ".d \""L~~ ~.II:r ..:i,,'I 'M""
:h",~t"" ilK: !o(~.,,~, .,,'.0:- l?<;:,.,.,., C to i. r..<t:~"! ,k~,q',
C(l~:t; Cl"\(t R"J'.~' ~<1o.:1l" t..>.)f1s", ~,..'\ (> ~:c.,,\l ~h".:r.",
(:!~"!'II I. wr'c.tr 1"''''''.')'0 if!<'!"'~. Ih~..
t"~~'>III. t30,ly lco::lln. Z ':l tJ "","<:efl~ ",It':><''',
!' ~I-,,<'~,II~ :1''''''"'1 k......, ~::> ~ ~n;:"',, ~l<,......~. .".,~.,..J
Ell _..:11, ,,,.~, 10'J"'. (;. M l:i "''''C~: ~Io)"".
E'lhtl'f"ll'~ $c-l<l, ;GO"'. 619 ::< ;Jen:~"! !I",:.r.,.. er".:t"11
::~I"::,,,ll. ..~.-.d~ hr,.,. Ilt.:,: H~l'>"'<~' .h~:.
l-'.+~,,'I.. ,,,,,",11" '''''1''., 181<". :,~,,",,--.:....., df>:>"'~
rv.,foO'W.,. ~,I' 1c;\ltI\ ~7>r. ~..It>.h\l!;.ml. fj 'f) ;, ~...:..,~n:
!:l...~,
F(\".t+.q--.t".) ~!It i,:)oC,"':":. $C!td ~l::--.s~rO"J'!tJ 2:~) ~O'"fi;"n'
,..1~S'~'C
r4iltW'...~ 1.h l~dnl_ ~.,~d svt~ln:ltlJ''t... !J:", l~ fW"t'l:~'''\'
::-h,......, .:-.~,'
f Uldll)"c-fl ,tI~ Ic,~'n. cknr Ve11;.Jt'I, Q !\J ~ ~r(:,~.'1
~k;)~~
O'lH'.<.r.. "Ii' dflY Iv"",,
tio.,.,j"JI ir,,__. -, ,,, ~ !,OIe!'" ~I(.lp~~
2.~ ~~ ~,~.~f2~D~~j::,
Hq'o." "-::JrII. !/I.:> U:\ :...,ccnf ,,~.P" I'DCk'~
.lvl'''''',., ;"''111>. l.:j:u ..~ I'L.......nt ~'~_. (:((1<...<1
'''"'k".,.,..,,,. ?~ '0 .1:' f>"!",.,....l ..l:lp~
H~..'l"'f' .:h:-.,. ~com. C !.::> l~' p.Ir"c.en:' .to,.., 4'.....-rr....ly
......~
;o~:.." C.;O', i~J'~. 11,~ iF. pll'"r""f~~ ~~~. S4I'""r.t,.
<...,~~
ll<I.,o..\ d-.r,t I"""",. 18 Iv ~ ;>HC"r.t .tc~, !loC',.<t,d.,.
'" vOnif
.1d..\
rhlP.
~Iot::
IId,j
1\1>:
:;~:~i
11,,:-:'
~h.!1
'...blJud klorr., lI!.J1.d, Q Iv ) po,tcrr, '\~K
f1.)bhnf1 I';>J"':i !:t.Jr~, ~l Ie I; P<'fr~f ~I\,)f)~"
tio,~.j !"'''''Y' ")9"J. 6 ", 1:> ....~.(.'f'1 ..I.'fl.'
1~~lJl.J,.lh~ .,....'''.y >>\l!lrJ, ;L tc 13 V\lf~"M ,1,*1:':0
I~~c,,;' 17.)"lf ~ocrl. lP.:u 3.'; P"tr~"! .1~C':t
~:~:~:~ ~~:;: ~:~: ~ :~ ~ ~::::i: ::::':. "'\i~
lIc.l>t;ar:i '!.>cd,. I:)C!T' "'c I:? f:~:;cr,f "'~'.", or.,.:to-<l
t".~\"f,j ."",Jr '''om. 1, h) Hl rf"rr~f\' ~l(;pc:
11.-;.,.'\
!C ,f'. ')
~~~:~ ~=~ ~.::~ r;;;'~~:::~"I:=:1
(.<:>'1<:'<:1 ,,.,dy IO:O:>M, 7 ::. ~ ;>err"", sh;vc:;. rt~
,,~n i
i
l.~G
\.010
\~~{;t~r- ~rM~:""". "t;;"'"p.:=-~
LC"I...I;o<l~', {i~,~w>' .l~l, ..to<fec
~:::~: :~=: :;~:~:: ~:=:. ,;r~,~
Lt:~:cr k<:lm, Ie p.'r.:'Jf'.: ,,:<.>pi:::'. "f,~.j
Lt::'\!...-EI~I,....,;I" ':""1'1",,,, t I:> f.J f'""'!'C."1 ..!o;:.~
I ;o~f.,,-r: \,h"",ii\!r! ~';;o<....:~>;, (; I.) ':; .)oCr.;..,',l ~I..,.:><"'.
':i :.,J",)
1..$....", ck'l
L~:)~.. (,~d'., .':)"f./f.'1:,
i. r.,.\
\ \H
......
t,~)
H,~'nh
~'O'tttt. l,:tOr!'
f'l"
()'tihO'..""1 "l'! Ii .... krt 'r.~...
,,-
~,l
rw
h
P!>-~: ..,uj ''''UC<:, J:otc...a~.:n~
,,,.1 I"_'CL kef'
"...,.J f!'~l.::k ~~4"!.ot...h' ~ftnH.),... '="'" lc.~o~
<;'''J ""'f'k, ,.,.,.,.Io.'<iI<Jly lth"I/;;,.",_ U"'''' ~("....,
t<a~
,~"c
q<lD
p.,,~~: \<"<"..., ,,,,,,j, ) 1(. 6 fll,<c...1 .l-:!p{'5
R:n',~' 1,.::>f''1 ,,,,,>Ii, () '" 17 J'o~;::.,.1 ~I('lrf':"
P,)l~V" k."ol::' 5\l'-.d, 1"0 l~ ~Cc,,' ,1.::1''''
~\Jr
:'r.
:\1.
t.IO
!.lD2
~-')"J'4 !<:;l1lll7 ~4f'tC, \8!0'f.) :>f'r~~~ .IQ;1'l::#
f;~: ~:;~';':;~_:l"~J
~lad.";..I,,.,,'''' !..<:r.'.~. 6 I:> !:t 1><t'i:.iJ1'1l ~Io_.,... .
;:;;~;;;~~;;,::,':,::'~' ",'~' f)1'(#
I,.'n! l~;)",. -; ~I') II p.:<M,1 Ilk.?,,"
T~<Ti: ;\Y.ll!\, r~l:(l~...,,'I<)II,. Il"",irc!
''Ior,k.:m.~ !~>'n, C I;) 'J r'M'~"" "lap~ .N
'f\~~ lv<:~. 2,,, (\ p"'C".1 !li"fl!!"
'~'k<..., I>XI!!\ 6 '0 12 pcu:t.:nt .1,*". ..
f ~
ld\
't..(
T;.>
W.:.;.:'"
""~Q
\'klG
Soil Survey Map
Environmental Assessment Worksheet
New ISO 112 High School in Chanhassen
Chanhassen, MN
Carver Coun
DATE:
JOB NO:
SCALE:
DRAWN
BY:
I
I
I
I
i
~
I NTE RTEC
JMJ
12
J t
l
<'::1
I; .
t.
PROJECT TEAM:
AItCHI'1Ecrr
II
RazeCoorn MI!1er An:M8da InC.
244 Fnl Awnue North
r.tnne8poIe, r.tnMSOta 55401
ph: 612-332-2110 fax: e12-~152
.. I..
CONSTRUCT1ON MANAGEMENT
R =DSt~SuIII 100
- MnnNpoIa, r.tn~ ~
L----.J ph: 962-&11-6408 fax: 962-831.1288
QYL E....EERI LANDSCAPE ARQ11TECT
AndwIo~~m.
~ =:'~2OU
ph: 763-644-1128 fa: 763-54400531
I11WCTURAL E....EER
lXE H81W EnQIneemg. PC
p.o. Ben 7387
FargO. Ncxtn 0aJl0tI 58108
ph: T01-2~ fa: 701-280-ie88
II!CHANICAL a !LECTRICAl. !JIClICEER
. H.moer; EngInMdng
1750 CornmetIa Court
Wtite Beer L...aU. Minneeota 55110
.~ ph: e51.741100 _: e51-748-9310
FOOD SIEIMC2 CONIULTAffT
B o.nnll HIM a AIIodIIoa
311 FOl.Itl A..- South
s.n.n. ~nr.- 58317
-, Ph:320.~ fD:~
THEATEA CONSULTANT
'" ~~Nof1h.SuIII210
t.IMeIpoIt. MN 66401
Ph: 612~ fa: e12-3J1-Ci081
.=
SOUND' ACOUS11C8 CONSUL TAIIT
BRAUNSM
I NTE RTEC
Grading Plan and Storm Water Pond Locations
Environmental Worksheet Assessment
Proposed Chanhassen High School
Chanhassen, Minnesota
rading Plan & Storm Water Pond locations
DATE: 10/27/2006
JOB NO: BL-QS-004539
FIGURE NO:
DRAWN
BY:
JMJ
13
.~
B!
to
.~
ffi
~
SM
BRAUN
INTERTEC
Bedrock Geology
Environmental Assessment Worksheet
New 150112 High School
Chanhassen, Minnesota
~~~ Odpg
OlEMVOOD
FORKt\TION
~T. Pf.l'f.:R OIP
SANDSTONE
I'RAIRIP.
DU O-tJEN o~
GROUP
JORDAN
SAND~"ONE (I
ST. U\WRENCE
FORMATION
e'l
FMNCONlI\
FORt..., TtON
IKONTON Be
GALESWJ..E
SANDSTONES
~
EAU CLAIRE
FORMATION
, .t;.
. ;~~'.
Bedrock Geota
DATE: 1
JOB NO: BL-06-04539
FIGURE NO:
DRAWN
BY:
JMJ
14
Orpnie deposits (Holocalt')-Palustrinc tcdimmbs consisting or datk. ~. ".~
bro\\"D to black. drained met UDdrained peat and muck. Commonly Ii 1.
found in depressions bctv.-een hills. in collapsed channels, and .U.
in the floodplain. In tbe floodplain this unit consists partly of '
o\ubank aDd slackwalet scdimenls. Where mapped on alluvial
6111$ (sees. 34 and 3S. T. Jl6 N.. R. 23 W.). this unic includes I" ~
. ~t~" ~~~ i.~. ~.~'~!5._~c fCD. f --::\,
Ice coataet deposits (Pldstoceae)--V3riablc thickDess of sandy 103m " .~."r~
to loamy ADd Bod silly clay loam; very C0ar8C nnd fraction
conto.ins a.~ much as 26 percent shale (average, 12 pcrcc!1t);
coll3p:scd, hummocky topography. Deposited b)' meltwater streams
on lOp of ice. Mined in the past for sand and gravel.
Higlt.,dkf dqo.tlts- TiU as nbove; fo~ poorly developed circular
fbt-Iopped hills; hummocky; oVl..-ra1l relief about 1 no feet (30
mderS): many oollnpscd channels.
lAw-relief dtpos;/t-TiIl as above; level to rollin, surface
topOgraphy; o\-erall "lief about 10ft (3 mct~); steep gullie,
arc as deep as 180 reet (55 metct'S); UDdcrlnia in many r10ees by
thick deposits of sand and gra\'cl.
..,_.~ Sandy tlU (PItistoccnc)-Lo3m 10 DIldy lom1; pcbbiy; potkets of silt,
sand, and gravel in plxC$. Average composition orthc YeI)' coane
sand fr.Icdon includes crystalline rocks (64 pcrecnt). carOOoale
rocks (26 percent). and shale fT3gmcnts (IO percent). Unit is
c.Qvun.~ in places by . discontinuous ~oeer of ..:md and gravel.
Forms promincot ridgc.
- - - -,-;- ~'.,
'.~:. "'. '.." '",
.O~~~~ -.J'~ D~-,P'l':~ " .'-
" ." .~Jl ~
~~'."'-' ,~
~.", "'-..~ 1
~~ ~. ~.I .,.~
,-~~~~ ~ ,. .,~.~
DESCRIPTION OF MAP SYM.BOIS
~,-- C..tact-Established from ~l pbor~nph5,. GCQmorpbolt>gy,
aud examination of surficial tlUteriaJ.
'-,
*.
".~
.. ~
'ir...l.-*~
~:
f~~.~~
.;.
1 f . _~..~.1
:\~:1 t ~!.;~
'. \J v"
'P~
.. ~~ ~~~===~\~a~~~Qltm.oU5
:. .\
~ ... ...... "II, ~ Irft:alar ""~.-Hacb~ poinl dowaslopc;
. ., identified by alignment of <kpmsions llIld lUes. Mny mark
:l~ . . coUap$cd and fiUc:d cbanncl.
,~~ ----- ~o.pte ndge-Interrreted to be an esker.
- ~Allnial faa-lodiCJltc:. area when: tAn lf1orpbolog) i. distil1'-".
~ Sae:~=:o=: o:.~~; :nhaed:~ ::d.~ :~~
is schematic repR:$CUlalion; indiviJual bars 001 ImSPaxU
i i:i ..
QUa
.0.
~~!~IJ~~r~'.'
:f' ., 1:-
;.~." l'
'.. > ~ 'OJ ..,..., - ,. .ja .~~
. 1: r. '-n;: 1':
, " ,(--) Ii 4: ' ,
~"""1: ~.' ~ .~..,;, ~ ~..t?..:
V. "~~~ t'~;~'~9 ,_~~~j.~
, ~j9'Yg~~ "~~-I ~J .r~~~.':~..,,~~
n " ...~ . ~~ ~'y
~; ~' '~fC' ...;1, ~ 7)
W*" .. . .<, l-"Y P'.: ,_.,: . '
y - -t. x....J,t.;:. ~. ~.;-.'~.. D~"...t
~ V
.....
<:>
Sample IocadoD-lncj~ .oil borings 3 -.26 feet (I 8 meters)
~. outcrops, ar:d ~conatiom (Constnlction site3. gravel
pits).
0tI
([E) Pits:-e:.~:;~I:~;ro:~~~ rock}-ActiVl:. inacli~. AA-.1l1
r~-
, ~ \.~
'\,~. .'-t;,....'r
, .~S ~~....
t! If:: I:
.. ..... r
:..1;
,-
-.. ~
~...
" ."
....... ..;:
,.. 9" ....1
..,-..1". ~ 0
.
I · -..
,j ..11-
[1"- ~, ~
:."1
:. .
r....~
"--.I".
. f .>
~~-" '1..;,/1.
~ '."'" 0
? .. 1 f:f~; · ·
;- t.. <\)
: air'... t ; '~;,;ilII'" .
{ . <. -. .J'"
I~ r" - 't t'-
t"
\ . #. : .J
~: \:.l~~~~. fI
-. ] .....,-.
"" " " , ".
'\ ~\ '~.~~:_~~.~:.
...."",., · '" .t~~. ~_ ' ,;~..........
.: ':-. ~ t/_.' .~--z \:.:J .~ >' \
.! -..~~~~ : .~_~'\~l .. f~ '~.
...... ' 41:~' .~ ..' ,..'" ,
~"l ~ :;.,>., . . I,! J~ :ta, . ~'
.. .....- r. -# .,. (L. . ~ .1Iti'.
~~ <;t Ir --\
":, ~...... ~:~ l~ .$~' - ....-.....-:
~ "!""".I ~ ~ .. . if.. ~ . . ~~ ..: ~. I ...
~ ~ ~ ."1 ~~. .'-1' ~. ., t": ,~~~.;~ ~
" l' " ,jfaIA'~'. r .! ~ .~..c.:.. ' A'. _-t J ",!'" .f.1IJii't
J(!~/\ · ~... t ' .;\. '.. ..~
: ...; ! ~ )" . 1 -:~ ~ ~'j. ~. ....",. :,.. - ..~. =\..L · .~_ ." . ::;.~. ,~ .. . ~ i
· t "1'../ J;/) t ' .." ~. .. ...~. . .a~ .~,,_..
I · ~ '~'" 1"-."(....,..' elitt... ~~. .~~~-~l, :- ~ '
\. ~:-."".~ .......~~ l' ~
l../ . [1'1 Cl · '~.~ , . '. ' ''-,'. ~
.J ~ I'-."L ,~~ ;.~
',' .J I '.. 'l"'~ · ~f''''' a..,.
f I .. ~".....) 'f" 1:
.1
.i .
~/}: ~
)
,
jl
1'"
.. ;:,
SM
I NTE RTEC
Surficial Geology Map
Environmental Assessment Worksheet
New ISO 112 High School in Chanhassen
Chanhassen, MN
Surficial Geology Map
DATE:
JOB NO:
SCALE:
DRAWN
BY:
BRAU
BL-QS-04539
FIGURE NO:
JMJ
15
..
..
.-
..
..
.-
.
Twin Cities & . · ·
.
Western RR ...
..
..
..
,-
..
..
..
..
..
.-
..
..
..
..
..
.-
..
.6
..
..
..
..
.'
.6
..
..
..
.-
..
..
.
LEGEND
II
2005 Average Annual Daily
Traffic Volumes
$o-.:rce: MnlOOl '1 raffle fJO\Y t/:3pS
,
N
BRAU
INTERTEC
Existing Daily Traffic Volumes
Environmental Assessment Worksheet
New ISO 112 High School in Chanhassen
Chanhassen, MN
Existing Daily Traffic Volumes
Prepared by TOI, October, 2006
DATE:
JOB NO: BL-06-04539
FIGURE NO:
SM
DRAWN
BY:
JMJ
16
I
i
~
..
.'
..
.9
..
..
..
.-
..
..
.e
.'
.-
.9
.-
.*
..
I-
..
..
..
~( ......
4S mph ..-
~ ..
..
.- ,.
.. ~\
.'
... 50mph
..
.-
win Cities & ....
"
Western RR ...
."
.-
-a
>
iii
..S
c..
(i
~
Lyman Blvd
45mp
LEGEND
=I Slop Sign
S Signali~ed 'ntersection
.... l"hrough -rraffic Lane
~ Bypass lane
r Turning Traffic Lane
(Right or Left Lane)
~ to\"1 \'olume Driveway
~ Channelized Right
Turn Lane
BRAUNSM
I NTE RTEC
c
g.
E
10
~
'?
L
,
N
Existing Lanes & Traffic Control
Environmental Assessment Worksheet
New ISD 112 High School in Chanhassen
Chanhassen, MN
Existing Lanes & Traffic Control
Prepared by TDI, October, 2006
DATE: I
JOB NO: BL-OS-04539
FIGURE NO:
DRAWN
BY:
JMJ
17
I
. ---
...
..
..
..
o.
.6
.
win Cities & . · ·
.
Weslern RR 0 · ·
..
..
..
..
..
..
..
..
.4
.-
..
..
.6
..
.4
..
.e
.'
..
..
..
..
..
.'
."
.-
..
..
.
..
.-
Lyman Blvd
LEGEND
II
Average Annual Daily Traffic
Volulnes Projected
!
N
BRAUNSM
I NTE RTEC
2010 Daily Traffic Volume Due to Development
Environmental Assessment Worksheet
New ISD 112 High School in Chanhassen
Chanhassen, MN
2010 Daily Traffic Volume Due to Development
Prepared by TOI, October, 2006
DATE: 6
JOB NO: BL-06-04539
FIGURE NO:
DRAWN
BY:
JMJ
18
~
>
m
c
.0.
ns
(!)
..
..
..
..
..
..
..
.'
..
..
.6
..
..
..
.-
.'
..
..
..
..
.~
..
..
.1
.-
..
..
..
.
Lyman Blvd
Lyman Blvd
..
..
".
.a
..
..
.
win Cities & ....
Western RR....
..
.
lak
o
LEGE!iQ
Changes in A. M. Peak HQur Turning
Movement Counts Due to
Oevelopnlenl
,
N
SM
BR UN
I NTE RTEC
2010 AM Traffic Volume Due to Development
Environmental Assessment Worksheet
New ISD 112 High School in Chanhassen
Chanhassen, MN
2010 AM Traffic Volume Due to Development
Prepared by TDI, October, 2006
DATE: /
JOB NO: BL-06-04539
FIGURE NO:
DRAWN
BY:
JMJ
19
i
1
I
--~
A
B
c
D
E
F
City of
Chanhassen
Zoning Map
-~ :<K. Ilur.>l R.:.A.I':lllQl (li~ri:1
"-~ ~f-3:(:~f~h 1L~~uJ Dl~i'l
. R4. MLlCOJ Lcw D.:n~ R.c:Z;mQl Dt<;{fi:1
~ :~'~ ~ ~;:::>~::i:l~;::-n~'~l~IY DIWKt
o I'l'LlH. -I'hcD:(I l~lIllo.:~I.H.::Q~,'nII1'.llJl<<nct
W put) Plar.nCl1 ~M Oe\- ~J. D::;ukt
. AZ .A~'c..aw..1 t;iUlO: ll,lotft.:l
. cue C.mnllJcN~ Di~ma
D H;I.II;~Ilw_'y~Hu-.i~~ S~ [)i.<I'h'J
. 00- C~"Wr..J Blait>QO; Da\'&f;;l
. Bt,l'rl::~~D~
C1 IlS. r-;C~lt'-~ rl:..",n~1 [)Ul~f
. lor - lu\iga\riAl Ot1k~ h k !>btn..."
o VI - om-'\: & II'.s;b..liQ~ Oi:<ma
=:J Nl:. NlII.IrJJ li'lvwoo::-..:Il\ L~lc
. RD - RQ.T.:aIbull ~;:lqmh:lll L:lM:
o OC.I ~Ca......-;., Paill",,' (}y,ftsy Dl~hicl I
o ~~2 SUI erne\( s~ocncsnry l")vcra, ~$Ina 2
.. :~ II: I . II") 3 o...:rb)" l)i"ni~ I
o I it" 1. - i t'oo)' :'> o.'"b) U,,.r;(1 2
II.... ----"1
I
1,OOC :l,COO 4,000
6.000
=f:l!t
! ~ a
i ~
c)':I..~:r : 3, 1,.~)fl
(j:\(j.~;r,u;n..~~';lC ~{J.1]':~'Zu;.",o,;z.U
BR
8M
UN
City of Chanhassen Zoning Map
Environmental Assessment Worksheet
New ISD 112 High School in Chanhassen
Chanhassen, MN
Ci of Chanhassen Zonin Ma
DATE:
JOB NO: BL-06-04539
INTERTEC
1
2
~! 2
3
4
5
6
7
,
tl'
i
I
I
I
I
I
I
I
I
I
-~
JMJ
FIGURE NO:
20
DRAWN
BY:
A
B
c
~ !
~ ....
i ~
f>Q1 --i
!
1i1'~ -1
""x. ,-, -1
I
~W -1
.. -'j
'.T-Tl-l-'- -,
I I I I ' I
~ ~
-- in I
)::
~N
~..(I--;
City of
Chanhassen
~-J
I
2020 Land Use Plan
-~
"~ --i
~ ----;
:lO!X - -----1
!
I~:~"" --J
!
':~
Residential. Large Lot (2,5 Acre Mimmwm 1/10 acre outside of MUSA)
Residentat - Low Densili' (N~t !Jells;ty Runge t2 - 41Acre.J
~ Residential- Medium Density (Nel Density Range 4 - 8 u/A~{e)
Residential- High Density (i'./e' Density renge 8 - '6 ulAcre)
~j CommericaJ
== Office
11 Office/Industrial
Parks/Open Space
Public/Semi-Public
Mixed
Be - 1 Bluff Creek Primary Overlay District 1
Be - 2 Sluff Creek Primary Overlay District 2
:~~
:~~
~~ ;
I
i
I
1'...Jll ---1
I
'I.....'-i
-- ----,"1
I
'1>>J --1
liNJ --I
llou:'; - 1
~
o 750 1.500 3.000 4.500
------
6.000
Feel
Oc1ober13,2006
BRAUNSM
I NTE RTEC
o
E
F
I
~l
:!I
I
:-- moc
i
t- ____h__ n."'OC
i
:--11;)).)
1-- "1
i
j N
I
~ ~
I
City of Chanhassen 2020 land Use Plan
Environmental Assessment Worksheet
New ISO 112 High School in Chanhassen
Chanhassen, MN
Ci of Chanhassen 2020 Land Use Plan
DATE: 9/1912006
JOB NO: BL-06-04539
FIGURE NO:
I
i
I
i
J
DRAWN
BY:
JMJ
21
Zoning Districts
D Rural- R
D Rural Resldential- RRl
D Rural Residential - RR2
D Low Density Residence - Rl
D Low Density Single Fa mlly Residence · R I-A
D Low Density Single Famllv Residence. Rl-B
D Medium Density Residence.. R2
D Multiple Family Residence - R3
D Planned Residential Development.. PRD
D Residential Lake Shore. PRo-L.LS
_ Neighborhood Service. C 1
_ General Commercial.. C2
_ DowntOYln.. C3
_ Planned CommerdaJ Development - PCD
D Industtal - I
o Resbicted Industrial.. J2
D Planned Industrial Development - PrO
_ Planned Multi-Use Development: - PMD
[" 7':' ') Public Open Space - PI
_ Public Facilities - P2
_ Flood Way.. F
D Open Development.. 0
SM
BRA N
I NTE RTEC
,
N
City of Chaska Zoning Map
Environmental Assessment Worksheet
New ISD 112 High School in Chanhassen
Chanhassen, MN
Ci of Chaska Zonin Ma
DATE:
JOB NO: BL-06-04539
SCALE: 10cm-3 miles FIGURE NO:
DRAWN
BY:
JMJ
L
22
I
I
I I L.J ~ 11 ~) C!:
r D ~~ \t/~1l /7
'rt ) ~, I
Ltl ~Ilr..... I ," A~proximateL:ll , I
F ~..... --'7.', Sl~ Location ~ I
l~--l 1 (' -~
r . '
_ . .. ..\
t '--
\
1
-Eh:o"
-- I'
~ ,--1-'
~~.. ~~
[ ~.
-"i_","__
{
~'.d'
t~1
'~
~
,
U-I
f\
,
cr.'
~. ~r-.
.~~
~.
~ I r
'~ J
~
..;.," ~~
-
~
~1~
-- tF~
-- FE: 1
- rrsb- I
~__/l
'\- ~
I
.....
'Y
"< ~~.
-:
~ [J. '
~
~
~
~."...
~
1
-
..:.c..
""
- ~~
/' ~,~ ""
/ ~ J ~\'t ~ .
-
-- ~
--~.
D~' -. ~ ~ ~bI
^ l.- r
~. I"'" jf,
~ 7L-,\
J~~\) ~., 11111/
~ I \\\ ~ ~\ ~n./
~ l ... l)-~-=
I '-n" 1- ~\- Ii I 1$
-
~ ~~
~~~
~^~
~17 W
Nj-P~?~(~ 1 n
'~, ,
"
1
P:l
~ .' -;-l .J
~~
~
I'~~l
Ldc :---r:
0;;.;.,...-
""....
.)
;.".,' " ~~
.)~~
~
-. ,...-
r /"" ---
I. ~./' · [L/
U" -~
.' )
I .
~~
~l
I
11
~ .,
/ ...: . ..'
.J.u..~II~
s:J;
--C -
/;
,
~
2020 CO)IPIlEHE.NSJVE PLAN
~. lIura! Raldmdal
Imr D..U, RuWc.CJ"
r.rMi1ml Da,,"" R~al
t::.J IDp DaIs", Rcslclmdal
.. Coa1lllerdal
~ 0fD<<
7l!:.~ lDhucdaJ
MbM UI"
0,.. Spac:. P..."a&loo
.. Parlll '1lfl:rftd..
c:::J I\1bUel SanJ. Publle
,
N
)
I l
~ "
L..
LJ
I
I
-I
BRAUNSM
I NTE RTEC
City of Chaska 2020 Comprehensive Plan
Environmental Assessment Worksheet
New ISD 112 High School in Chanhassen
Chanhassen, MN
City of Chaska 2020 Comprehensive Plan
DATE: 10/1912006
JOB NO: BL-06-04539
SCALE: 3.875"- 15840 FIGURE NO:
DRAWN
BY:
JMJ
23
~
EAWAA
PPENDIX
TIS
RAFFICMPACTTUDY
FOR
CHS
HANHASSENIGHCHOOL
C,MN
HANHASSEN
Prepared for Independent School District 112
by Traffic Data Inc.
October 2006
Traffic Impact Study
for
Chanhassen High School
Chanhassen, MN
Prepared for
Independent School District 112
by Traffic Data Inc.
October 18, 2006
I hereby certify that this plan, specification or report
was prepared by me or under my direct supervision,
and that I am a duly Licensed Professional Engineer
under the laws of the State of Minnesota.
By: _________________________
Michael P. Spack, P.E.
License No. 40936
Date: _________________________
Traffic Data Inc.
3268 Xenwood Ave S
St. Louis Park, MN 55416
www.trafficdatainc.com
EXECUTIVE SUMMARY
Independent School District 112 is proposing to build a new high school east of
Lyman Boulevard at Lake Hazeltine Drive in Chanhassen, MN (see Figure 1).
The high school will have a capacity of 2,000 students and be open for the 2009
school year. The plan for the high school campus has three access points:
1. A bus/truck only access which will become the northern leg of the existing
Lyman Boulevard/Audubon Road South tee intersection.
2. An automobile access which will become the eastern leg of the existing
Lyman Boulevard/Lake Hazeltine Drive tee intersection.
3. A new tee intersection access for automobiles on Lyman Boulevard
approximately 1,300 feet north of Lake Hazeltine Drive and 700 feet south
of the railroad tracks.
A large mixed use development is planned southeast of the site and the new
Highway 212/312 freeway are both planned to be complete by 2010. These
projects will have an impact on traffic near the proposed high school campus.
Based on the analyses in this traffic study, traffic generated by the high school
campus will be accommodated if the following improvements are made:
Construct a traffic signal at the Lyman Boulevard/Lake Hazeltine Drive
intersection.
Modify the existing signal at the Lyman Boulevard/Audubon Road South
intersection for the addition of a north leg to the intersection.
Construct the following turn lanes:
Left Turn Right Turn
Approach
LaneLane
Southbound Lyman Blvd at North School AccessBypass lane
Northbound Lyman Blvd at North School Access 200 feet
Westbound North School Access at Lyman Blvd Through lane 300 feet
becomes turn lane
Southbound Lyman Blvd at Lake Hazeltine Dr 200 feet
Northbound Lyman Blvd at Lake Hazeltine Dr 200 feet
Eastbound Lake Hazeltine Dr at Lyman Blvd 100 feet
Westbound Lake Hazeltine Dr at Lyman Blvd 300 feet Build
through/right
Eastbound Lyman Blvd at Audubon Rd S 200 feet
Westbound Lyman Blvd at Audubon Rd S 200 feet
Northbound Audubon Rd S at Lyman Blvd Build (to add
through lane)
Southbound Audubon Rd S at Lyman Blvd 200 feet Build
through/right
In addition, operation of the Lyman Boulevard/Gaplin Boulevard and Lyman
Boulevard/Audubon Road North intersections should be monitored for potential
improvements. Both intersections will likely require traffic signals and additional
turn lanes in the future.
i
Chanhassen High School Chanhassen, MN
Traffic Impact Study October 2006
No Scale
Study Area
Proposed Site
Chanhassen High School
Figure 1 -
Location Maps
Chanhassen High School
Chanhassen, MN
Prepared by TDI
October, 2006
TABLE OF CONTENTS
Executive Summary …………………………………………………………………….. i
I. Introduction.…………………………………………………………..................... 1
II. Area Conditions.…………………………………………………………….……... 1
III. Projected Traffic.………………………………………………….....…………..... 7
IV. Traffic Analysis.………………………………………………............................ 23
V. Conclusions…………………………………………......................................... 28
LIST OF FIGURES
Figure 1 – Location Maps…………………………………………………………….…ii
Figure 2 – Existing Lanes and Traffic Control.……………………………….……....2
Figure 3 – Existing A.M. Peak Hour Traffic Volumes…………………………......... 3
Figure 4 – Existing 2:30 to 3:30 P.M. Hour Traffic Volumes…………………......... 4
Figure 5 – Existing P.M. Peak Hour Traffic Volumes…………………………......... 5
Figure 6 – Existing Daily Traffic Volumes…………………………...…………......... 6
Figure 7 – Trip Distribution.…………………………………..................................... 9
Figure 8 – A.M. Peak Hour Volume Due to Development…................................ 10
Figure 9 – 2:30 to 3:30 P.M. Hour Volume Due to Development …..………….... 11
Figure 10 – P.M. Peak Hour Volume Due to Development..................................12
Figure 11 – Daily Traffic Volume Due to Development........................................ 13
Figure 12 – 2010 No-Build A.M. Peak Hour Traffic Volumes………………......... 14
Figure 13 – 2010 No-Build 2:30 to 3:30 P.M. Hour Traffic Volumes…................ 15
Figure 14 – 2010 No-Build P.M. Peak Hour Traffic Volumes……….................... 16
Figure 15 – 2010 No-Build Daily Traffic Volumes…………………………….........17
Figure 16 – 2010 Build A.M. Peak Hour Traffic Volumes……………...…….........18
Figure 17 – 2010 Build 2:30 to 3:30 P.M. Hour Traffic Volumes……………........ 19
Figure 18 – 2010 Build P.M. Peak Hour Traffic Volumes……………………........ 20
Figure 19 – 2010 Build Daily Traffic Volumes….................................................. 21
Figure 20 – 2030 Build Daily Traffic Volumes…………………………………....... 22
LIST OF TABLES
Table 1 – Trip Generation……………………………………………………………… 7
Table 2 – A.M. Peak Hour LOS Results……………………………...……....…..…25
Table 3 – 2:30 to 3:30 P.M. Peak Hour LOS Results………………………….….. 25
Table 4 – P.M. Peak Hour LOS Results…………………………………...……….. 25
Table 5 – Recommended New Turn Lane Lengths............................................. 27
APPENDIX
Site Plan
Existing Turning Movement Counts
Level of Service Calculations
iii
Chanhassen High School Chanhassen, MN
Traffic Impact Study October 2006
I. INTRODUCTION
The purpose of this study is to analyze the traffic impacts associated with the
proposed high school in Chanhassen, MN. The high school will accommodate a
maximum of 2,000 students and is planned to be open for the 2009 school year.
A site plan for the proposed high school is shown in the Appendix. For analysis
purposes, it is anticipated that the school campus will be fully operational in
2010. The Lyman Boulevard/Galpin Boulevard, proposed Lyman
Boulevard/Northern School access, Lyman Boulevard/Lake Hazeltine Drive,
Lyman Boulevard/Audubon Road South, and Lyman Boulevard/Audubon Road
North intersections are studied to determine if the intersections will operate
acceptably with the new high school. The intersections will be analyzed during
the a.m. peak hour, 2:30 to 3:30 p.m. hour when school is dismissed, and the
p.m. peak hour. The Galpin Boulevard, Lyman Boulevard, and Audubon Road
corridors near the site are also reviewed. The following scenarios are analyzed:
Existing conditions (Year 2006)
Year 2010 No-Build
Year 2010 Build
II. AREA CONDITIONS
A. TNSA
RANSPORTATION ETWORKTUDYREA
The study area consists of the Lyman Boulevard (County Sate Aid Highway –
CSAH – 18) corridor from Galpin Boulevard (CSAH 19) on the west to Audubon
Road North (CSAH 17) on the east (see Figure 1). Lyman Boulevard is a two
lane, rural section roadway with a 50 mph speed limit at the site. Turn lanes or
bypass lanes are provided at major intersections. The speed limits on the cross
streets within the study corridor range from 30 mph to 50 mph. Existing traffic
control, speed limits, and travel lanes for each study intersection are shown on
Figure 2. The existing Lyman Boulevard/Galpin Boulevard, Lyman
Boulevard/Lake Hazeltine Drive, Lyman Boulevard/Audubon Road South, and
Lyman Boulevard/Audubon Road North intersections will be impacted by the
development.
The a.m. peak hour, 2:30 to 3:30 p.m., and p.m. peak hour turning movement
counts were conducted by Traffic Data Inc. in September 2006 at the study
intersections (see Figures 3 through 5). Daily traffic volumes for the area
roadways from Mn/DOT’s traffic flow maps are shown in Figure 6.
This study area is not served by transit with fixed stops. Traffic volumes or
patterns in the study are not affected by the presence of transit.
1
Chanhassen High School Chanhassen, MN
Traffic Impact Study October 2006
No Scale
Lyman Blvd
Twin Cities &
Western RR
Lake Hazeltine Dr
Lyman Blvd
LEGEND
Stop Sign
Figure 2 -
Signalized Intersection
Existing Lanes &
Through Traffic Lane
Traffic Control
Bypass Lane
Chanhassen High School
Turning Traffic Lane
(Right or Left Lane)
Chanhassen, MN
Low Volume Driveway
Prepared by TDI
Channelized Right
October, 2006
Turn Lane
50
238
No Scale
Lyman Blvd
1
91
347
Lyman Blvd
Twin Cities &
Western RR
Lake Hazeltine Dr
Lyman Blvd
34
259481
370
234
Lake Hazeltine Dr
29246
173549
44179
Chanhassen High School
LEGEND
Chanhassen, MN
Septemper, 2006A.M. Peak
Hour Turning Movement Count
Prepared by TDI
source: Traffic Data Inc.
October, 2006
74
200
No Scale
Lyman Blvd
1
103
253
Lyman Blvd
Twin Cities &
Western RR
Lake Hazeltine Dr
Lyman Blvd
7
103319
383
234
Lake Hazeltine Dr
79100
156369
204287
Chanhassen High School
Chanhassen, MN
LEGEND
Prepared by TDI
September, 2006 P.M. Peak
October, 2006
Hour Turning Movement Count
source: Traffic Data Inc.
90
216
No Scale
Lyman Blvd
1
76
217
Lyman Blvd
Twin Cities &
Western RR
Lake Hazeltine Dr
Lyman Blvd
21
141522
617
234
Lake Hazeltine Dr
89143
235454
243277
Chanhassen High School
Chanhassen, MN
LEGEND
Prepared by TDI
September, 2006 P.M. Peak
October, 2006
Hour Turning Movement Count
source: Traffic Data Inc.
No Scale
Lyman Blvd
5,600
Twin Cities &
Western RR
Lake Hazeltine Dr
Lyman Blvd
9,100
13,40011,100
Chanhassen High School
Chanhassen, MN
Prepared by TDI
LEGEND
October, 2006
2005 Average Annual Daily
Traffic Volumes
source: Mn/DOT Traffic Flow Maps
III. PROJECTED TRAFFIC
A. ST
ITERAFFIC
A trip generation analysis was performed for the high school based on the
th
methods and rates published in the ITE Trip Generation Manual, 7 Edition.
Approximately 1,100 parking stalls are being provided on the high school
campus. Based on the operation of other suburban high schools and the Chaska
High School (ISD 112’s only existing high school), it is anticipated that 900
vehicles (students and staff) will park during the a.m. peak hour and 800 parked
vehicles will leave during the p.m. peak hour. This is in addition to the parents
and school buses that drop off students. The trip generation numbers calculated
based on the ITE Trip Generation Manual were increased to reflect the number
of vehicles expected to use the parking lots. It is assumed traffic for the site will
be generated as shown in Table 1.
Table 1 –Trip Generation for 2,000 Student High School Campus
Vehicles Entering Vehicles Exiting
Daily (Weekday) 1,710 1,710
A.M. Peak Hour 1,154 254
2:30 to 3:30 P.M. Hour 179 979
P.M. Peak Hour 132 332
The directional trip distribution for the school campus is shown in Figure 7. The
trip distributions are based on data provided by school district staff. The daily,
a.m. peak hour, 2:30 to 3:30 p.m. hour, and p.m. peak hour trips generated by
the site were distributed to the area roadways per the trip distributions shown in
Figure 7. The traffic volumes generated by the school campus during these time
frames are shown on Figures 8 through 11.
B. OT
THERRAFFIC
Traffic forecasts were developed for the year 2010 No-Build scenario. Based on
historical growth in traffic volumes along Lyman Boulevard, a 2.0% straight-line
annual growth rate was applied to the existing traffic volumes.
A large mixed use development is anticipated near the school site, south of
Lyman Boulevard and east of Audubon Road South. The traffic impacts of that
development were documented in the Chanhassen 2005 AUAR dated December
8, 2003. It is anticipated that this development will be complete in 2010. The
traffic generated by build of the site was documented in Figure 20 of the AUAR.
The new freeway alignment of Highway 212/312 is currently under construction
from Eden Prairie to Chaska and is planned to be fully operational by 2008. The
traffic study in the Appendix of the Chanhassen 2005 AUAR documented the
traffic volumes that are anticipated to be diverted from Lyman Boulevard to the
new Highway 212/312.
7
Chanhassen High School Chanhassen, MN
Traffic Impact Study October 2006
The 2010 No-Build traffic forecasts were developed by adding the following
components together:
Factor the existing traffic volumes to 2010 traffic volumes with a 2%
straight line growth rate.
Add the traffic from the Chanhassen 2005 AUAR site.
Subtract the traffic that will use Highway 212/312 in 2010 instead of
Lyman Boulevard, per the Chanhassen 2005 AUAR.
This combination is shown as the 2010 No-Build traffic volumes in Figures 12
through 15. The Chanhassen 2005 AUAR documented the changes for the p.m.
peak hour, but not the 2:30 to 3:30 p.m. hour. It is assumed that the traffic
volumes added by the Chanhassen 2005 AUAR site and the volumes diverted to
Highway 212/312 during the 2:30 to 3:30 p.m. hour will be 50% of the p.m. peak
hour traffic volumes. This is reflected in the 2010 No-Build traffic volumes in
Figure 13.
C. TFT
OTAL UTURE RAFFIC
Traffic forecasts were developed for the year 2010 Build scenario by adding the
site generated traffic shown in Figures 8 through 11 to the No-Build volumes
shown in Figures 12 through 15. The resultant Build traffic forecasts are shown
in Figures 16 through 19.
The 2010 daily traffic volumes shown in Figure 19 were factored with a 2.0%
straight-line annual growth rate to develop 2030 daily traffic volumes to give
Carver County staff a sense of the right-of-way needs for the Lyman Boulevard
corridor. These 2030 Build Daily traffic volumes are shown in Figure 20. These
are rough forecasts for informational purposes. Carver County is undertaking a
large scale traffic forecasting project to determine the ultimate design for the
Lyman Boulevard corridor. Unfortunately, those results will not be available until
2007.
8
Chanhassen High School Chanhassen, MN
Traffic Impact Study October 2006
No Scale
10%
25%
Lyman Blvd
20%
Twin Cities &
Western RR
40%
Lake Hazeltine Dr
Lyman Blvd
5%
Figure 7 -
Trip Distribution
Chanhassen High School
Chanhassen, MN
Legend
Prepared by TDI
X%
October, 2006
Trip Distributions for High School
30
60
No Scale
Lyman Blvd
0
290
Lyman Blvd
80
0
Twin Cities &
Western RR
Lake Hazeltine Dr
Lyman Blvd
101200
0570460
14000
Lake Hazeltine Dr
06050
0130110
0100
Chanhassen High School
Chanhassen, MN
LEGEND
Prepared by TDI
Changes in A. M. Peak Hour Turning
October, 2006
Movement Counts Due to
Development
100
240
No Scale
Lyman Blvd
0
40
Lyman Blvd
290
0
Twin Cities &
Western RR
Lake Hazeltine Dr
Lyman Blvd
50200
09070
54000
Lake Hazeltine Dr
010200
0490390
0500
Chanhassen High School
Chanhassen, MN
LEGEND
Changes in P. M. Peak Hour Turning
Prepared by TDI
Movement Counts Due to
October, 2006
Development
30
90
No Scale
Lyman Blvd
0
30
Lyman Blvd
100
0
Twin Cities &
Western RR
Lake Hazeltine Dr
Lyman Blvd
20100
07050
18000
Lake Hazeltine Dr
01070
0170130
0100
Chanhassen High School
Chanhassen, MN
LEGEND
Changes in P. M. Peak Hour Turning
Prepared by TDI
Movement Counts Due to
October, 2006
Development
No Scale
Lyman Blvd
900
Twin Cities &
Western RR
Lake Hazeltine Dr
Lyman Blvd
2,1002,1001,500
Chanhassen High School
LEGEND
Chanhassen, MN
Prepared by TDI
Average Annual Daily Traffic
October, 2006
Volumes Projected
50
320
No Scale
Lyman Blvd
1
100
480
Lyman Blvd
Twin Cities &
Western RR
Lake Hazeltine Dr
Lyman Blvd
40
320430
310210
234
Lake Hazeltine Dr
30270
240470
5025070
Chanhassen High School
Chanhassen, MN
LEGEND
Prepared by TDI
October, 2006
Peak Hour Turning Movement
Count Projected
80
250
No Scale
Lyman Blvd
1
110
290
Lyman Blvd
Twin Cities &
Western RR
Lake Hazeltine Dr
Lyman Blvd
10
120260
33020
234
Lake Hazeltine Dr
90110
180420
21032010
Chanhassen High School
Chanhassen, MN
LEGEND
Prepared by TDI
Peak Hour Turning Movement
October, 2006
Count Projected
100
290
No Scale
Lyman Blvd
1
80
280
Lyman Blvd
Twin Cities &
Western RR
Lake Hazeltine Dr
Lyman Blvd
20
170390
50040
234
Lake Hazeltine Dr
100150
270540
26032010
Chanhassen High School
Chanhassen, MN
LEGEND
Prepared by TDI
Peak Hour Turning Movement
October, 2006
Count Projected
No Scale
Lyman Blvd
7,200
Twin Cities &
Western RR
Lake Hazeltine Dr
Lyman Blvd
11,000
16,20014,500
Chanhassen High School
Chanhassen, MN
LEGEND
Prepared by TDI
2005 Average Annual Daily
October, 2006
Traffic Volume Forecasts
source: Mn/DOT Traffic Flow Maps
80
380
No Scale
Lyman Blvd
100
770
Lyman Blvd
80
0
Twin Cities &
Western RR
Lake Hazeltine Dr
Lyman Blvd
1012040
0890890
140310210
Lake Hazeltine Dr
3060320
0370580
5026070
Chanhassen High School
Chanhassen, MN
LEGEND
Prepared by TDI
October, 2006
Peak Hour Turning Movement Count
Projected
180
490
No Scale
Lyman Blvd
110
330
Lyman Blvd
290
0
Twin Cities &
Western RR
Lake Hazeltine Dr
Lyman Blvd
502010
0210330
54033020
Lake Hazeltine Dr
9010310
0670810
21037010
Chanhassen High School
Chanhassen, MN
LEGEND
Prepared by TDI
Peak Hour Turning Movement Count
October, 2006
Projected
130
380
No Scale
Lyman Blvd
80
310
Lyman Blvd
100
0
Twin Cities &
Western RR
Lake Hazeltine Dr
Lyman Blvd
201020
0240440
18050040
Lake Hazeltine Dr
10010220
0440670
26033010
Chanhassen High School
Chanhassen, MN
LEGEND
Prepared by TDI
Peak Hour Turning Movement Count
October, 2006
Projected
No Scale
Lyman Blvd
8,100
Twin Cities &
Western RR
Lake Hazeltine Dr
Lyman Blvd
13,10018,300
15,900
Chanhassen High School
LEGEND
Chanhassen, MN
Prepared by TDI
Average Annual Daily Traffic
October, 2006
Volumes Projected
No Scale
Lyman Blvd
11,300
Twin Cities &
Western RR
Lake Hazeltine Dr
Lyman Blvd
18,30025,60022,300
Chanhassen High School
LEGEND
Chanhassen, MN
Prepared by TDI
Average Annual Daily Traffic
October, 2006
Volumes Projected
IV. TRAFFIC ANALYSIS
A. CC
APACITY OF ORRIDORS
The daily capacity of a roadway depends on many factors such as turn lanes,
directional split of traffic, mode split, peaking of traffic, intersection spacing, etc.
Basic planning level analyses indicate that a two lane undivided arterial roadway
with turn lanes, such as Lyman Boulevard or Audubon Road at the site, can
adequately serve up to 17,000 vehicles per day. The existing daily traffic
volumes on the Lyman Boulevard, Galpin Boulevard, Audubon Road South, and
Audubon Road North corridors near the site are currently below these thresholds.
Lyman Boulevard east of Audubon Road South will be near its capacity in both
the 2010 No-Build and Build scenarios. By 2030, it is anticipated Lyman
Boulevard will remain under the 17,000 vehicles per day capacity west of Lake
Hazeltine Drive and over capacity east of Lake Hazeltine Drive. Lyman
Boulevard will likely need to be a four lane divided roadway (with turn lanes
provided at intersections) east of Lake Hazeltine Drive by 2030. Appropriate
right-of-way should be reserved for that corridor. Lyman Boulevard will be able
to function as a two lane roadway west of Lake Hazeltine Drive through at least
2030.
B. CLSSI
APACITY AND EVEL OF ERVICE AT TUDY NTERSECTIONS
An intersection capacity analysis was conducted for the existing intersections per
theHighway Capacity Manual. Intersections are assigned a “Level of Service”
letter grade for the peak hour of traffic based on the number of lanes at the
intersection, traffic volumes, and traffic control. Level of Service A (LOS A)
represents light traffic flow (free flow conditions) while Level of Service F (LOS F)
represents heavy traffic flow (over capacity conditions). LOS D is considered
acceptable in urban conditions.
The LOS results for the study hours in 2006 are shown in Tables 2 through 4.
These are based on the existing traffic control and lane configurations as shown
in Figure 2. The existing turning movement volumes from Figures 3 through 5
were used in the LOS calculations.
TheChanhassen 2005 AUAR states that right and left turn lanes should be
added to the Lyman Boulevard approaches to Audubon Road North. It also
states that a traffic signal should be built at the Lyman Boulevard/Audubon Road
North intersection when traffic signal warrants are met (per the Minnesota
Manual on Uniform Traffic Control Devices). The intersection will meet the peak
hour warrant in both the 2010 No-Build and Build scenarios. It is assumed the
turn lane and signal improvements will be made by 2010 whether the high school
is built or not.
The 2010 No-Build LOS grades shown in Tables 2 through 4 were calculated for
the 2010 No-Build study hours using the turning movement volumes from Figures
12 through 14. The existing traffic control and lane configurations shown in
23
Chanhassen High School Chanhassen, MN
Traffic Impact Study October 2006
Figure 2 were used as the basis for the LOS calculations. In addition, the turn
lane and signal improvements discussed above for the Lyman Boulevard/
Audubon Road North intersection are anticipated to be made by 2010.
The 2010 Build LOS grades shown in Tables 2 through 4 were calculated for the
2010 Build study hours using the turning movement volumes from Figures 16
through 18. The existing traffic control and lane configurations shown in Figure 2
were used as the basis for the LOS calculations. In addition, the following
changes are assumed to be in place:
Lyman Boulevard/North School Access Intersection – the outbound
approach from the high school campus will be stop controlled and consist
of one shared left/right lane.
Lyman Boulevard/Lake Hazeltine Drive Intersection –
The eastbound Lake Hazeltine Drive approach will be striped with
o
an exclusive left turn lane and a through/right lane.
The outbound approach from the high school campus will be stop
o
controlled and consist of an exclusive left turn lane and a
through/right lane.
Add a southbound to eastbound exclusive left turn lane on Lyman
o
Boulevard.
Add a northbound to eastbound exclusive right turn lane on Lyman
o
Boulevard.
Lyman Boulevard/Audubon Road South Intersection –
Add an eastbound to northbound left turn lane on Lyman
o
Boulevard.
Add a westbound to northbound right turn lane on Lyman
o
Boulevard.
Add a northbound through lane on Audubon Road South.
o
The new southbound approach out of the school campus will
o
consist of an exclusive left turn lane and a through/right lane.
Modify signal to accommodate new lanes.
o
Lyman Boulevard/Audubon Road North Intersection –
Add traffic signal control per the Chanhassen 2005 AUAR.
o
Add exclusive left and right turn lanes on Lyman Boulevard per the
o
Chanhassen 2005 AUAR.
Build exclusive right turn lanes on the Audubon Road approaches
o
to the intersection.
24
Chanhassen High School Chanhassen, MN
Traffic Impact Study October 2006
Table 2 – A.M. Peak Hour LOS Results
20102010
IntersectionExistingNo-BuildBuild
1
Lyman Blvd/Galpin Blvd A
A
F
Lyman Blvd/North School Access - - A
2
Lyman Blvd/Lake Hazeltine Dr A A
F
Lyman Blvd/Audubon Rd S C C D
Lyman Blvd/Audubon Rd N A C C
1
Lyman Blvd/Galpin Blvd will operate at LOS B if the intersection is controlled with a traffic signal
instead of stop signs on the cross street.
2
Lyman Blvd/Lake Hazeltine Dr will operate at LOS C if the intersection is controlled with a traffic
signal instead of stop signs on the cross street.
Table 3 – 2:30 to 3:30 P.M. Peak Hour LOS Results
20102010
IntersectionExistingNo-BuildBuild
Lyman Blvd/Galpin Blvd A A A
Lyman Blvd/North School Access - - A
1
Lyman Blvd/Lake Hazeltine Dr A A
F
Lyman Blvd/Audubon Rd S C C D
Lyman Blvd/Audubon Rd N A B B
1
Lyman Blvd/Lake Hazeltine Dr will operate at LOS D if the intersection is controlled with a traffic
signal instead of stop signs on the cross street.
Table 4 – P.M. Peak Hour LOS Results
20102010
IntersectionExistingNo-BuildBuild
Lyman Blvd/Galpin Blvd A A A
Lyman Blvd/North School Access - - A
1
Lyman Blvd/Lake Hazeltine Dr A A
F
Lyman Blvd/Audubon Rd S D C D
Lyman Blvd/Audubon Rd N B C C
1
Lyman Blvd/Lake Hazeltine Dr will operate at LOS C if the intersection is controlled with a traffic
signal instead of stop signs on the cross street.
The summary reports for the Level of Service analyses are contained in the
Appendix.
All of the study intersections currently operate acceptably at LOS D or better
during the study hours. The Lyman Boulevard/Galpin Boulevard intersection
operation breaks down to LOS F in the 2010 Build a.m. peak hour. This can be
mitigated to LOS B if the traffic control is changed to a traffic signal. The
intersection will meet the peak hour warrant per the Minnesota Manual on
Uniform Traffic Control Devices. The Lyman Boulevard/Lake Hazeltine Drive
intersection operates at LOS F during all of the study hours if it is controlled with
stop signs on Lake Hazeltine Drive. The intersection will operate at LOS D or
25
Chanhassen High School Chanhassen, MN
Traffic Impact Study October 2006
better during all of the study hours if the intersection is controlled with a traffic
signal.
C. TS
RAFFIC AFETY
All of the study intersections are controlled with either traffic signals or stop signs.
There are no sight distance obstructions at any of the intersections. Each study
intersection had 7 or fewer crashes between 2003 and 2005 (full three years)
with no discernable patterns. The location of the proposed northern high school
access on Lyman Boulevard meets the stopping sight distance requirements for
the 50 mph speed limit. The addition of traffic from the high school is not
expected to cause safety problems.Because of the high speed limit on Lyman
Boulevard, it is recommended that exclusive right and left turn lanes (or a bypass
lane at tee intersections) be provided at each Lyman Boulevard ingress to the
campus.
D. ISC
NTERNAL ITEIRCULATION
A drop-off/pick-up aisle and circle is provided at the front door of the school as a
“car pool” lane. The school buses have their own access and parking area on
the southeast side of the school. The students and staff parking their own
vehicles are separated from buses and the car pool lane. Site circulation is
anticipated to work well and inbound vehicles are not expected to stack out onto
Lyman Boulevard.
E. RI
ECOMMENDED MPROVEMENTS
The following improvements are recommended within the study corridor.
Traffic Signals
Lyman Boulevard/Galpin Boulevard – This intersection should be
monitored and a traffic signal should be constructed when traffic signal
warrants are met per the Minnesota Manual on Uniform Traffic Control
Devices.
Lyman Boulevard/Lake Hazeltine Drive – This intersection should be
controlled with a traffic signal on opening day of the school. It will meet
warrants per the Minnesota Manual on Uniform Traffic Control Devices.
Lyman Boulevard/Audubon Road South – The existing signal will need to
be modified to accommodate construction of the northern leg of the
intersection.
Lyman Boulevard/Audubon Road North – The Chanhassen 2005 AUAR
noted that this intersection will need to be controlled with a traffic signal,
independent of the proposed high school. This intersection should be
monitored and a traffic signal should be constructed when traffic signal
warrants are met per the Minnesota Manual on Uniform Traffic Control
Devices.
26
Chanhassen High School Chanhassen, MN
Traffic Impact Study October 2006
Table 5 – Recommended New Turn Lane Lengths
Left Turn Right Turn
Approach
LaneLane
Eastbound Lyman Blvd at Galpin Blvd 200 feet
Southbound Lyman Blvd at North School AccessBypass lane
Northbound Lyman Blvd at North School Access 200 feet
Westbound North School Access at Lyman Blvd Through lane 300 feet
becomes turn lane
Southbound Lyman Blvd at Lake Hazeltine Dr 200 feet
Northbound Lyman Blvd at Lake Hazeltine Dr 200 feet
Eastbound Lake Hazeltine Dr at Lyman Blvd 100 feet
Westbound Lake Hazeltine Dr at Lyman Blvd 300 feet Build
through/right
Eastbound Lyman Blvd at Audubon Rd S 200 feet
Westbound Lyman Blvd at Audubon Rd S 200 feet
Northbound Audubon Rd S at Lyman Blvd Build (to add
through lane)
Southbound Audubon Rd S at Lyman Blvd 200 feet Build
through/right
Eastbound Lyman Blvd at Audubon Rd N 200 feet 200 feet
Westbound Lyman Blvd at Audubon Rd N 200 feet
Northbound Audubon Rd N at Lyman Blvd 200 feet
Southbound Audubon Rd N at Lyman Blvd 200 feet
F. SI
TATUS OF MPROVEMENTS
Carver County is currently studying what improvements should be made to the
entire Lyman Boulevard corridor. Construction of turn lanes at the school’s
access points as well as construction of a traffic signal at the Lyman
Boulevard/Lake Hazeltine Drive needs to be complete by opening day of the high
school. The other improvements along Lyman Boulevard should be coordinated
with Carver County’s reconstruction of the Lyman Boulevard corridor.
27
Chanhassen High School Chanhassen, MN
Traffic Impact Study October 2006
V. CONCLUSIONS
A. SR
UMMARY OF OADWAYS
If traffic volumes grow as anticipated, Lyman Boulevard will ultimately need to be
a four lane divided roadway southeast of Lake Hazeltine Drive and a two lane
roadway northwest of Lake Hazeltine Drive. Turn lanes will need to be provided
at street crossings along the corridor. Right-of-way should be preserved for this
ultimate design.
B. SIA
UMMARY OF NTERSECTION NALYSIS
The study intersections will operate acceptably at LOS D or better with the
addition of the traffic from the proposed high school if the improvements detailed
in this report are made.
C. SNI
UMMARY OF EEDED MPROVEMENTS
Based on the analyses in this traffic study, traffic generated by the Chanhassen
High School will be accommodated if the following improvements are made by
opening day:
Construct a traffic signal at the Lyman Boulevard/Lake Hazeltine Drive
intersection.
Modify the existing signal at the Lyman Boulevard/Audubon Road South
intersection for the addition of a north leg to the intersection.
Construct the following turn lanes:
Left Turn Right Turn
Approach
LaneLane
Southbound Lyman Blvd at North School AccessBypass lane
Northbound Lyman Blvd at North School Access 200 feet
Westbound North School Access at Lyman Blvd Through lane 300 feet
becomes turn lane
Southbound Lyman Blvd at Lake Hazeltine Dr 200 feet
Northbound Lyman Blvd at Lake Hazeltine Dr 200 feet
Eastbound Lake Hazeltine Dr at Lyman Blvd 100 feet
Westbound Lake Hazeltine Dr at Lyman Blvd 300 feet Build
through/right
Eastbound Lyman Blvd at Audubon Rd S 200 feet
Westbound Lyman Blvd at Audubon Rd S 200 feet
Northbound Audubon Rd S at Lyman Blvd Build (to add
through lane)
Southbound Audubon Rd S at Lyman Blvd 200 feet Build
through/right
In addition, operation of the Lyman Boulevard/Gaplin Boulevard and Lyman
Boulevard/Audubon Road North intersections should be monitored for potential
improvements as detailed in this report.
28
Chanhassen High School Chanhassen, MN
Traffic Impact Study October 2006
PPENDIX
Chanhassen High School Chanhassen, MN
Traffic Impact Study October 2006
Lyman Blvd & Galpin BlvdChanhassen High School
2006 A.M. Peak Hour Chanhassen, MN
MovementEBLEBTWBTWBRSBLSBR
Lane Configurations
Sign ControlFreeFreeStop
Grade0%0%0%
Volume (veh/h)9134723850146123
Peak Hour Factor0.900.900.900.900.900.90
Hourly flow rate (vph)10138626456162137
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)8
Median typeNone
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume320659264
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol320659264
tC, single (s)4.16.86.9
tC, 2 stage (s)
tF (s)2.23.53.3
p0 queue free %925581
cM capacity (veh/h)1237364734
Direction, Lane #EB 1EB 2WB 1WB 2SB 1
Volume Total23025726456299
Volume Left101000162
Volume Right00056137
cSH1237170017001700671
Volume to Capacity0.080.150.160.030.45
Queue Length 95th (ft)700057
Control Delay (s)4.00.00.00.017.3
Lane LOSAC
Approach Delay (s)1.90.017.3
Approach LOSC
Intersection Summary
Average Delay 5.5
Intersection Capacity Utilization 42.8%ICU Level of Service A
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Lake Hazeltine DrChanhassen High School
2006 A.M. Peak Hour Chanhassen, MN
MovementEBLEBRNBLNBTSBTSBR
Lane Configurations
Sign ControlStopFreeFree
Grade0%0%0%
Volume (veh/h)2944334261308188
Peak Hour Factor0.900.900.900.900.900.90
Hourly flow rate (vph)3249371290342209
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median typeNone
Median storage veh)
Upstream signal (ft)1069
pX, platoon unblocked
vC, conflicting volume1374342551
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol1374342551
tC, single (s)6.46.24.1
tC, 2 stage (s)
tF (s)3.53.32.2
p0 queue free %689364
cM capacity (veh/h)1027001019
Direction, Lane #EB 1EB 2NB 1NB 2SB 1SB 2
Volume Total3249371290342209
Volume Left320371000
Volume Right049000209
cSH1027001019170017001700
Volume to Capacity0.320.070.360.170.200.12
Queue Length 95th (ft)30642000
Control Delay (s)55.910.510.50.00.00.0
Lane LOSFBB
Approach Delay (s)28.55.90.0
Approach LOSD
Intersection Summary
Average Delay 4.8
Intersection Capacity Utilization 48.0%ICU Level of Service A
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Audubon Rd SChanhassen High School
2006 A.M. Peak Hour Chanhassen, MN
MovementEBTEBRWBLWBTNBLNBR
Lane Configurations
Ideal Flow (vphpl)190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.0
Lane Util. Factor1.001.001.001.001.001.00
Frt1.000.851.001.001.000.85
Flt Protected1.001.000.951.000.951.00
Satd. Flow (prot)186315831770186317701583
Flt Permitted1.001.000.951.000.951.00
Satd. Flow (perm)186315831770186317701583
Volume (vph)173179370259309579
Peak-hour factor, PHF0.900.900.900.900.900.90
Adj. Flow (vph)192199411288343643
RTOR Reduction (vph)0141000452
Lane Group Flow (vph)19258411288343191
Turn TypePermProtPerm
Protected Phases4382
Permitted Phases42
Actuated Green, G (s)20.020.018.742.720.520.5
Effective Green, g (s)21.521.518.744.222.022.0
Actuated g/C Ratio0.290.290.250.600.300.30
Clearance Time (s)5.55.54.05.55.55.5
Vehicle Extension (s)3.03.03.03.03.03.0
Lane Grp Cap (vph)5404594461110525469
v/s Ratio Protc0.10c0.230.15c0.19
v/s Ratio Perm0.040.12
v/c Ratio0.360.130.920.260.650.41
Uniform Delay, d120.919.427.07.222.820.9
Progression Factor1.001.001.001.001.001.00
Incremental Delay, d20.40.124.40.16.22.6
Delay (s)21.319.551.57.329.023.5
Level of ServiceCBDACC
Approach Delay (s)20.433.325.4
Approach LOSCCC
Intersection Summary
HCM Average Control Delay27.1HCM Level of ServiceC
HCM Volume to Capacity ratio0.63
Actuated Cycle Length (s) 74.2Sum of lost time (s)12.0
Intersection Capacity Utilization64.3%ICU Level of ServiceC
Analysis Period (min)15
c Critical Lane Group
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Audubon Rd NChanhassen High School
2006 A.M. Peak Hour Chanhassen, MN
MovementEBLEBTWBTWBRSBLSBR
Lane Configurations
Sign ControlFreeFreeStop
Grade0%0%0%
Volume (veh/h)2465494813412154
Peak Hour Factor0.900.900.900.900.900.90
Hourly flow rate (vph)2736105343813171
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median typeNone
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume5721386534
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol5721386534
tC, single (s)4.16.86.9
tC, 2 stage (s)
tF (s)2.23.53.3
p0 queue free %738665
cM capacity (veh/h)99797490
Direction, Lane #EB 1EB 2WB 1WB 2SB 1
Volume Total47740753438184
Volume Left27300013
Volume Right00038171
cSH997170017001700379
Volume to Capacity0.270.240.310.020.49
Queue Length 95th (ft)2800064
Control Delay (s)7.00.00.00.023.1
Lane LOSAC
Approach Delay (s)3.80.023.1
Approach LOSC
Intersection Summary
Average Delay 4.6
Intersection Capacity Utilization 67.8%ICU Level of Service C
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Galpin BlvdChanhassen High School
2006 2:30 to 3:30 Hour Chanhassen, MN
MovementEBLEBTWBTWBRSBLSBR
Lane Configurations
Sign ControlFreeFreeStop
Grade0%0%0%
Volume (veh/h)103253200744152
Peak Hour Factor0.900.900.900.900.900.90
Hourly flow rate (vph)114281222824658
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)8
Median typeNone
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume304592222
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol304592222
tC, single (s)4.16.86.9
tC, 2 stage (s)
tF (s)2.23.53.3
p0 queue free %918993
cM capacity (veh/h)1253398781
Direction, Lane #EB 1EB 2WB 1WB 2SB 1
Volume Total20818722282103
Volume Left11400046
Volume Right0008258
cSH1253170017001700902
Volume to Capacity0.090.110.130.050.11
Queue Length 95th (ft)800010
Control Delay (s)4.80.00.00.012.3
Lane LOSAB
Approach Delay (s)2.50.012.3
Approach LOSB
Intersection Summary
Average Delay 2.8
Intersection Capacity Utilization 33.8%ICU Level of Service A
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Lake Hazeltine DrChanhassen High School
2006 2:30 to 3:30 Hour Chanhassen, MN
MovementEBLEBRNBLNBTSBTSBR
Lane Configurations
Sign ControlStopFreeFree
Grade0%0%0%
Volume (veh/h)792046319826135
Peak Hour Factor0.900.900.900.900.900.90
Hourly flow rate (vph)882277022029039
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median typeNone
Median storage veh)
Upstream signal (ft)1069
pX, platoon unblocked
vC, conflicting volume650290329
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol650290329
tC, single (s)6.46.24.1
tC, 2 stage (s)
tF (s)3.53.32.2
p0 queue free %797094
cM capacity (veh/h)4097491231
Direction, Lane #EB 1EB 2NB 1NB 2SB 1SB 2
Volume Total882277022029039
Volume Left88070000
Volume Right022700039
cSH4097491231170017001700
Volume to Capacity0.210.300.060.130.170.02
Queue Length 95th (ft)20325000
Control Delay (s)16.211.98.10.00.00.0
Lane LOSCBA
Approach Delay (s)13.12.00.0
Approach LOSB
Intersection Summary
Average Delay 5.0
Intersection Capacity Utilization 33.0%ICU Level of Service A
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Audubon Rd SChanhassen High School
2006 2:30 to 3:30 Hour Chanhassen, MN
MovementEBTEBRWBLWBTNBLNBR
Lane Configurations
Ideal Flow (vphpl)190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.0
Lane Util. Factor1.001.001.001.001.001.00
Frt1.000.851.001.001.000.85
Flt Protected1.001.000.951.000.951.00
Satd. Flow (prot)186315831770186317701583
Flt Permitted1.001.000.951.000.951.00
Satd. Flow (perm)186315831770186317701583
Volume (vph)156287383103164311
Peak-hour factor, PHF0.900.900.900.900.900.90
Adj. Flow (vph)173319426114182346
RTOR Reduction (vph)0227000244
Lane Group Flow (vph)17392426114182102
Turn TypePermProtPerm
Protected Phases4382
Permitted Phases42
Actuated Green, G (s)20.020.019.143.120.420.4
Effective Green, g (s)21.521.519.144.621.921.9
Actuated g/C Ratio0.290.290.260.600.290.29
Clearance Time (s)5.55.54.05.55.55.5
Vehicle Extension (s)3.03.03.03.03.03.0
Lane Grp Cap (vph)5384574541115520465
v/s Ratio Protc0.09c0.240.06c0.10
v/s Ratio Perm0.060.06
v/c Ratio0.320.200.940.100.350.22
Uniform Delay, d120.820.027.16.420.719.8
Progression Factor1.001.001.001.001.001.00
Incremental Delay, d20.30.227.10.01.91.1
Delay (s)21.120.254.26.422.620.9
Level of ServiceCCDACC
Approach Delay (s)20.544.121.5
Approach LOSCDC
Intersection Summary
HCM Average Control Delay29.0HCM Level of ServiceC
HCM Volume to Capacity ratio0.52
Actuated Cycle Length (s) 74.5Sum of lost time (s)12.0
Intersection Capacity Utilization64.6%ICU Level of ServiceC
Analysis Period (min)15
c Critical Lane Group
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Audubon Rd NChanhassen High School
2006 2:30 to 3:30 Hour Chanhassen, MN
MovementEBLEBTWBTWBRSBLSBR
Lane Configurations
Sign ControlFreeFreeStop
Grade0%0%0%
Volume (veh/h)100369319712171
Peak Hour Factor0.900.900.900.900.900.90
Hourly flow rate (vph)111410354813190
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median typeNone
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume362782354
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol362782354
tC, single (s)4.16.86.9
tC, 2 stage (s)
tF (s)2.23.53.3
p0 queue free %919670
cM capacity (veh/h)1193300642
Direction, Lane #EB 1EB 2WB 1WB 2SB 1
Volume Total2482733548203
Volume Left11100013
Volume Right0008190
cSH1193170017001700597
Volume to Capacity0.090.160.210.000.34
Queue Length 95th (ft)800038
Control Delay (s)4.20.00.00.014.1
Lane LOSAB
Approach Delay (s)2.00.014.1
Approach LOSB
Intersection Summary
Average Delay 3.6
Intersection Capacity Utilization 51.1%ICU Level of Service A
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Galpin BlvdChanhassen High School
2006 P.M. Peak Hour Chanhassen, MN
MovementEBLEBTWBTWBRSBLSBR
Lane Configurations
Sign ControlFreeFreeStop
Grade0%0%0%
Volume (veh/h)76217216907854
Peak Hour Factor0.900.900.900.900.900.90
Hourly flow rate (vph)842412401008760
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)8
Median typeNone
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume340529240
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol340529240
tC, single (s)4.16.86.9
tC, 2 stage (s)
tF (s)2.23.53.3
p0 queue free %938192
cM capacity (veh/h)1216446761
Direction, Lane #EB 1EB 2WB 1WB 2SB 1
Volume Total165161240100147
Volume Left8400087
Volume Right00010060
cSH1216170017001700755
Volume to Capacity0.070.090.140.060.19
Queue Length 95th (ft)600018
Control Delay (s)4.50.00.00.013.0
Lane LOSAB
Approach Delay (s)2.30.013.0
Approach LOSB
Intersection Summary
Average Delay 3.3
Intersection Capacity Utilization 33.9%ICU Level of Service A
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Lake Hazeltine DrChanhassen High School
2006 P.M. Peak Hour Chanhassen, MN
MovementEBLEBRNBLNBTSBTSBR
Lane Configurations
Sign ControlStopFreeFree
Grade0%0%0%
Volume (veh/h)892433922527224
Peak Hour Factor0.900.900.900.900.900.90
Hourly flow rate (vph)992704325030227
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median typeNone
Median storage veh)
Upstream signal (ft)1069
pX, platoon unblocked
vC, conflicting volume639302329
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol639302329
tC, single (s)6.46.24.1
tC, 2 stage (s)
tF (s)3.53.32.2
p0 queue free %776396
cM capacity (veh/h)4257371231
Direction, Lane #EB 1EB 2NB 1NB 2SB 1SB 2
Volume Total992704325030227
Volume Left99043000
Volume Right027000027
cSH4257371231170017001700
Volume to Capacity0.230.370.040.150.180.02
Queue Length 95th (ft)22423000
Control Delay (s)16.012.78.00.00.00.0
Lane LOSCBA
Approach Delay (s)13.61.20.0
Approach LOSB
Intersection Summary
Average Delay 5.4
Intersection Capacity Utilization 36.0%ICU Level of Service A
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Audubon Rd SChanhassen High School
2006 P.M. Peak Hour Chanhassen, MN
MovementEBTEBRWBLWBTNBLNBR
Lane Configurations
Ideal Flow (vphpl)190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.0
Lane Util. Factor1.001.001.001.001.001.00
Frt1.000.851.001.001.000.85
Flt Protected1.001.000.951.000.951.00
Satd. Flow (prot)186315831770186317701583
Flt Permitted1.001.000.951.000.951.00
Satd. Flow (perm)186315831770186317701583
Volume (vph)235277617141123360
Peak-hour factor, PHF0.900.900.900.900.900.90
Adj. Flow (vph)261308686157137400
RTOR Reduction (vph)0233000302
Lane Group Flow (vph)2617568615713798
Turn TypePermProtPerm
Protected Phases4382
Permitted Phases42
Actuated Green, G (s)20.220.234.158.320.420.4
Effective Green, g (s)21.721.734.159.821.921.9
Actuated g/C Ratio0.240.240.380.670.240.24
Clearance Time (s)5.55.54.05.55.55.5
Vehicle Extension (s)3.03.03.03.03.03.0
Lane Grp Cap (vph)4513836731242432386
v/s Ratio Protc0.14c0.390.08c0.08
v/s Ratio Perm0.050.06
v/c Ratio0.580.191.020.130.320.25
Uniform Delay, d130.027.027.85.427.827.3
Progression Factor1.001.001.001.001.001.00
Incremental Delay, d21.80.239.60.01.91.6
Delay (s)31.827.367.45.529.728.9
Level of ServiceCCEACC
Approach Delay (s)29.455.929.1
Approach LOSCEC
Intersection Summary
HCM Average Control Delay40.8HCM Level of ServiceD
HCM Volume to Capacity ratio0.70
Actuated Cycle Length (s) 89.7Sum of lost time (s)12.0
Intersection Capacity Utilization77.5%ICU Level of ServiceD
Analysis Period (min)15
c Critical Lane Group
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Audubon Rd NChanhassen High School
2006 P.M. Peak Hour Chanhassen, MN
MovementEBLEBTWBTWBRSBLSBR
Lane Configurations
Sign ControlFreeFreeStop
Grade0%0%0%
Volume (veh/h)1434545222134241
Peak Hour Factor0.900.900.900.900.900.90
Hourly flow rate (vph)1595045802338268
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median typeNone
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume6031150580
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol6031150580
tC, single (s)4.16.86.9
tC, 2 stage (s)
tF (s)2.23.53.3
p0 queue free %847641
cM capacity (veh/h)970160458
Direction, Lane #EB 1EB 2WB 1WB 2SB 1
Volume Total32733658023306
Volume Left15900038
Volume Right00023268
cSH970170017001700372
Volume to Capacity0.160.200.340.010.82
Queue Length 95th (ft)15000183
Control Delay (s)5.50.00.00.046.5
Lane LOSAE
Approach Delay (s)2.70.046.5
Approach LOSE
Intersection Summary
Average Delay 10.2
Intersection Capacity Utilization 70.9%ICU Level of Service C
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Galpin BlvdChanhassen High School
2010 No-Build A.M. Peak Hour Chanhassen, MN
MovementEBLEBTWBTWBRSBLSBR
Lane Configurations
Sign ControlFreeFreeStop
Grade0%0%0%
Volume (veh/h)10048032050160130
Peak Hour Factor0.900.900.900.900.900.90
Hourly flow rate (vph)11153335656178144
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)8
Median typeNone
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume411844356
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol411844356
tC, single (s)4.16.86.9
tC, 2 stage (s)
tF (s)2.23.53.3
p0 queue free %903577
cM capacity (veh/h)1144273641
Direction, Lane #EB 1EB 2WB 1WB 2SB 1
Volume Total28935635656322
Volume Left111000178
Volume Right00056144
cSH1144170017001700494
Volume to Capacity0.100.210.210.030.65
Queue Length 95th (ft)8000116
Control Delay (s)3.80.00.00.027.5
Lane LOSAD
Approach Delay (s)1.70.027.5
Approach LOSD
Intersection Summary
Average Delay 7.2
Intersection Capacity Utilization 51.9%ICU Level of Service A
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Lake Hazeltine DrChanhassen High School
2010 No-Build A.M. Peak Hour Chanhassen, MN
MovementEBLEBRNBLNBTSBTSBR
Lane Configurations
Sign ControlStopFreeFree
Grade0%0%0%
Volume (veh/h)3050340340440200
Peak Hour Factor0.900.900.900.900.900.90
Hourly flow rate (vph)3356378378489222
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median typeNone
Median storage veh)
Upstream signal (ft)1069
pX, platoon unblocked
vC, conflicting volume1622489711
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol1622489711
tC, single (s)6.46.24.1
tC, 2 stage (s)
tF (s)3.53.32.2
p0 queue free %499057
cM capacity (veh/h)65579888
Direction, Lane #EB 1EB 2NB 1NB 2SB 1SB 2
Volume Total3356378378489222
Volume Left330378000
Volume Right056000222
cSH65579888170017001700
Volume to Capacity0.510.100.430.220.290.13
Queue Length 95th (ft)52854000
Control Delay (s)108.311.912.00.00.00.0
Lane LOSFBB
Approach Delay (s)48.06.00.0
Approach LOSE
Intersection Summary
Average Delay 5.7
Intersection Capacity Utilization 55.3%ICU Level of Service B
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Audubon Rd SChanhassen High School
2010 No-Build A.M. Peak Hour Chanhassen, MN
MovementEBTEBRWBLWBTNBLNBR
Lane Configurations
Ideal Flow (vphpl)190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.0
Lane Util. Factor1.001.001.001.001.001.00
Frt1.000.851.001.001.000.85
Flt Protected1.001.000.951.000.951.00
Satd. Flow (prot)186315831770186317701583
Flt Permitted1.001.000.951.000.951.00
Satd. Flow (perm)186315831770186317701583
Volume (vph)240250310320360570
Peak-hour factor, PHF0.900.900.900.900.900.90
Adj. Flow (vph)267278344356400633
RTOR Reduction (vph)0198000443
Lane Group Flow (vph)26780344356400190
Turn TypePermProtPerm
Protected Phases4382
Permitted Phases42
Actuated Green, G (s)21.521.521.046.522.522.5
Effective Green, g (s)23.023.021.048.024.024.0
Actuated g/C Ratio0.290.290.260.600.300.30
Clearance Time (s)5.55.54.05.55.55.5
Vehicle Extension (s)3.03.03.03.03.03.0
Lane Grp Cap (vph)5364554651118531475
v/s Ratio Protc0.14c0.190.19c0.23
v/s Ratio Perm0.050.12
v/c Ratio0.500.180.740.320.750.40
Uniform Delay, d123.721.427.07.925.322.3
Progression Factor1.001.000.610.371.001.00
Incremental Delay, d23.30.85.40.79.52.5
Delay (s)27.022.221.93.634.924.8
Level of ServiceCCCACC
Approach Delay (s)24.612.628.7
Approach LOSCBC
Intersection Summary
HCM Average Control Delay22.7HCM Level of ServiceC
HCM Volume to Capacity ratio0.66
Actuated Cycle Length (s) 80.0Sum of lost time (s)12.0
Intersection Capacity Utilization63.8%ICU Level of ServiceB
Analysis Period (min)15
c Critical Lane Group
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Audubon Rd NChanhassen High School
2010 No-Build A.M. Peak Hour Chanhassen, MN
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Ideal Flow (vphpl)190019001900190019001900190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.04.04.04.04.0
Lane Util. Factor1.001.001.001.001.001.001.001.001.001.00
Frt1.001.000.851.001.000.851.000.851.000.85
Flt Protected0.951.001.000.951.001.000.951.000.951.00
Satd. Flow (prot)1770186315831770186315831770158317701583
Flt Permitted0.951.001.000.951.001.000.751.000.741.00
Satd. Flow (perm)1770186315831770186315831398158313701583
Volume (vph)270470702104304030090100170
Peak-hour factor, PHF0.900.900.900.900.900.900.900.900.900.900.900.90
Adj. Flow (vph)3005227823347844330100110189
RTOR Reduction (vph)00370023008500161
Lane Group Flow (vph)30052241233478210331501128
Turn TypeProtPermProtPermPermPermPermPerm
Protected Phases743826
Permitted Phases482266
Actuated Green, G (s)18.140.540.514.136.536.510.410.410.410.4
Effective Green, g (s)18.142.042.014.138.038.011.911.911.911.9
Actuated g/C Ratio0.230.520.520.180.480.480.150.150.150.15
Clearance Time (s)4.05.55.54.05.55.55.55.55.55.5
Vehicle Extension (s)3.03.03.03.03.03.03.03.03.03.0
Lane Grp Cap (vph)400978831312885752208235204235
v/s Ratio Protc0.17c0.280.130.26
v/s Ratio Perm0.030.01c0.020.010.010.02
v/c Ratio0.750.530.050.750.540.030.160.060.050.12
Uniform Delay, d128.812.59.331.314.811.229.729.329.229.5
Progression Factor0.910.670.201.001.001.001.001.001.001.00
Incremental Delay, d26.01.60.19.42.40.10.40.10.10.2
Delay (s)32.310.02.040.617.211.230.029.429.329.7
Level of ServiceCBADBBCCCC
Approach Delay (s)16.724.129.529.7
Approach LOSBCCC
Intersection Summary
HCM Average Control Delay21.7HCM Level of ServiceC
HCM Volume to Capacity ratio0.54
Actuated Cycle Length (s) 80.0Sum of lost time (s)12.0
Intersection Capacity Utilization55.9%ICU Level of ServiceB
Analysis Period (min)15
c Critical Lane Group
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Galpin BlvdChanhassen High School
2010 No-Build 2:30 to 3:30 PM Hour Chanhassen, MN
MovementEBLEBTWBTWBRSBLSBR
Lane Configurations
Sign ControlFreeFreeStop
Grade0%0%0%
Volume (veh/h)110290250804060
Peak Hour Factor0.900.900.900.900.900.90
Hourly flow rate (vph)122322278894467
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)8
Median typeNone
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume367683278
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol367683278
tC, single (s)4.16.86.9
tC, 2 stage (s)
tF (s)2.23.53.3
p0 queue free %908791
cM capacity (veh/h)1188343720
Direction, Lane #EB 1EB 2WB 1WB 2SB 1
Volume Total23021527889111
Volume Left12200044
Volume Right0008967
cSH1188170017001700859
Volume to Capacity0.100.130.160.050.13
Queue Length 95th (ft)900011
Control Delay (s)4.90.00.00.013.1
Lane LOSAB
Approach Delay (s)2.50.013.1
Approach LOSB
Intersection Summary
Average Delay 2.8
Intersection Capacity Utilization 37.7%ICU Level of Service A
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Lake Hazeltine DrChanhassen High School
2010 No-Build 2:30 to 3:30 PM Hour Chanhassen, MN
MovementEBLEBRNBLNBTSBTSBR
Lane Configurations
Sign ControlStopFreeFree
Grade0%0%0%
Volume (veh/h)902107024029040
Peak Hour Factor0.900.900.900.900.900.90
Hourly flow rate (vph)1002337826732244
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median typeNone
Median storage veh)
Upstream signal (ft)1069
pX, platoon unblocked
vC, conflicting volume744322367
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol744322367
tC, single (s)6.46.24.1
tC, 2 stage (s)
tF (s)3.53.32.2
p0 queue free %726893
cM capacity (veh/h)3577191192
Direction, Lane #EB 1EB 2NB 1NB 2SB 1SB 2
Volume Total1002337826732244
Volume Left100078000
Volume Right023300044
cSH3577191192170017001700
Volume to Capacity0.280.320.070.160.190.03
Queue Length 95th (ft)28355000
Control Delay (s)19.012.48.20.00.00.0
Lane LOSCBA
Approach Delay (s)14.41.90.0
Approach LOSB
Intersection Summary
Average Delay 5.2
Intersection Capacity Utilization 34.9%ICU Level of Service A
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Audubon Rd SChanhassen High School
2010 No-Build 2:30 to 3:30 PM Hour Chanhassen, MN
MovementEBTEBRWBLWBTNBLNBR
Lane Configurations
Ideal Flow (vphpl)190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.0
Lane Util. Factor1.001.001.001.001.001.00
Frt1.000.851.001.001.000.85
Flt Protected1.001.000.951.000.951.00
Satd. Flow (prot)186315831770186317701583
Flt Permitted1.001.000.951.000.951.00
Satd. Flow (perm)186315831770186317701583
Volume (vph)180320330120190360
Peak-hour factor, PHF0.900.900.900.900.900.90
Adj. Flow (vph)200356367133211400
RTOR Reduction (vph)0257000300
Lane Group Flow (vph)20099367133211100
Turn TypePermProtPerm
Protected Phases4382
Permitted Phases42
Actuated Green, G (s)22.422.428.655.020.020.0
Effective Green, g (s)23.923.928.656.521.521.5
Actuated g/C Ratio0.280.280.330.660.250.25
Clearance Time (s)5.55.54.05.55.55.5
Vehicle Extension (s)3.03.03.03.03.03.0
Lane Grp Cap (vph)5184405891224443396
v/s Ratio Protc0.11c0.210.07c0.12
v/s Ratio Perm0.060.06
v/c Ratio0.390.220.620.110.480.25
Uniform Delay, d125.123.924.25.427.525.8
Progression Factor1.001.000.840.431.001.00
Incremental Delay, d22.21.22.00.23.61.5
Delay (s)27.325.122.32.531.127.3
Level of ServiceCCCACC
Approach Delay (s)25.917.028.6
Approach LOSCBC
Intersection Summary
HCM Average Control Delay24.2HCM Level of ServiceC
HCM Volume to Capacity ratio0.50
Actuated Cycle Length (s) 86.0Sum of lost time (s)12.0
Intersection Capacity Utilization61.6%ICU Level of ServiceB
Analysis Period (min)15
c Critical Lane Group
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Audubon Rd NChanhassen High School
2010 No-Build 2:30 to 3:30 PM Hour Chanhassen, MN
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Ideal Flow (vphpl)190019001900190019001900190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.04.04.04.04.0
Lane Util. Factor1.001.001.001.001.001.001.001.001.001.00
Frt1.001.000.851.001.000.851.000.851.000.85
Flt Protected0.951.001.000.951.001.000.951.000.951.00
Satd. Flow (prot)1770186315831770186315831770158317701583
Flt Permitted0.951.001.000.951.001.000.751.000.751.00
Satd. Flow (perm)1770186315831770186315831398158313981583
Volume (vph)11042010202601010030100180
Peak-hour factor, PHF0.900.900.900.900.900.900.900.900.900.900.900.90
Adj. Flow (vph)12246711222891111033110200
RTOR Reduction (vph)004005002800172
Lane Group Flow (vph)1224677222896011501128
Turn TypeProtPermProtPermPermPermPermPerm
Protected Phases743826
Permitted Phases482266
Actuated Green, G (s)11.356.956.93.749.349.310.410.410.410.4
Effective Green, g (s)11.358.458.43.750.850.811.911.911.911.9
Actuated g/C Ratio0.130.680.680.040.590.590.140.140.140.14
Clearance Time (s)4.05.55.54.05.55.55.55.55.55.5
Vehicle Extension (s)3.03.03.03.03.03.03.03.03.03.0
Lane Grp Cap (vph)23312651075761100935193219193219
v/s Ratio Protc0.07c0.250.010.16
v/s Ratio Perm0.000.000.010.000.01c0.02
v/c Ratio0.520.370.010.290.260.010.060.020.060.13
Uniform Delay, d134.85.94.439.98.57.232.232.032.232.5
Progression Factor0.860.510.311.001.001.001.001.001.001.00
Incremental Delay, d21.80.70.02.10.60.00.10.00.10.3
Delay (s)31.93.71.442.09.17.232.332.132.332.8
Level of ServiceCAADAACCCC
Approach Delay (s)9.411.332.132.7
Approach LOSABCC
Intersection Summary
HCM Average Control Delay15.0HCM Level of ServiceB
HCM Volume to Capacity ratio0.36
Actuated Cycle Length (s) 86.0Sum of lost time (s)12.0
Intersection Capacity Utilization48.8%ICU Level of ServiceA
Analysis Period (min)15
c Critical Lane Group
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Galpin BlvdChanhassen High School
2010 No-Build P.M. Peak Hour Chanhassen, MN
MovementEBLEBTWBTWBRSBLSBR
Lane Configurations
Sign ControlFreeFreeStop
Grade0%0%0%
Volume (veh/h)802802901008060
Peak Hour Factor0.900.900.900.900.900.90
Hourly flow rate (vph)893113221118967
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)8
Median typeNone
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume433656322
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol433656322
tC, single (s)4.16.86.9
tC, 2 stage (s)
tF (s)2.23.53.3
p0 queue free %927690
cM capacity (veh/h)1123367673
Direction, Lane #EB 1EB 2WB 1WB 2SB 1
Volume Total193207322111156
Volume Left8900089
Volume Right00011167
cSH1123170017001700642
Volume to Capacity0.080.120.190.070.24
Queue Length 95th (ft)600024
Control Delay (s)4.30.00.00.014.9
Lane LOSAB
Approach Delay (s)2.10.014.9
Approach LOSB
Intersection Summary
Average Delay 3.2
Intersection Capacity Utilization 39.8%ICU Level of Service A
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Lake Hazeltine DrChanhassen High School
2010 No-Build P.M. Peak Hour Chanhassen, MN
MovementEBLEBRNBLNBTSBTSBR
Lane Configurations
Sign ControlStopFreeFree
Grade0%0%0%
Volume (veh/h)1002604029033030
Peak Hour Factor0.900.900.900.900.900.90
Hourly flow rate (vph)1112894432236733
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median typeNone
Median storage veh)
Upstream signal (ft)1069
pX, platoon unblocked
vC, conflicting volume778367400
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol778367400
tC, single (s)6.46.24.1
tC, 2 stage (s)
tF (s)3.53.32.2
p0 queue free %685796
cM capacity (veh/h)3516791159
Direction, Lane #EB 1EB 2NB 1NB 2SB 1SB 2
Volume Total1112894432236733
Volume Left111044000
Volume Right028900033
cSH3516791159170017001700
Volume to Capacity0.320.430.040.190.220.02
Queue Length 95th (ft)33533000
Control Delay (s)19.914.28.20.00.00.0
Lane LOSCBA
Approach Delay (s)15.81.00.0
Approach LOSC
Intersection Summary
Average Delay 5.7
Intersection Capacity Utilization 40.1%ICU Level of Service A
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Audubon Rd SChanhassen High School
2010 No-Build P.M. Peak Hour Chanhassen, MN
MovementEBTEBRWBLWBTNBLNBR
Lane Configurations
Ideal Flow (vphpl)190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.0
Lane Util. Factor1.001.001.001.001.001.00
Frt1.000.851.001.001.000.85
Flt Protected1.001.000.951.000.951.00
Satd. Flow (prot)186315831770186317701583
Flt Permitted1.001.000.951.000.951.00
Satd. Flow (perm)186315831770186317701583
Volume (vph)270320500170160430
Peak-hour factor, PHF0.900.900.900.900.900.90
Adj. Flow (vph)300356556189178478
RTOR Reduction (vph)0267000364
Lane Group Flow (vph)30089556189178114
Turn TypePermProtPerm
Protected Phases4382
Permitted Phases42
Actuated Green, G (s)21.021.034.059.020.020.0
Effective Green, g (s)22.522.534.060.521.521.5
Actuated g/C Ratio0.250.250.380.670.240.24
Clearance Time (s)5.55.54.05.55.55.5
Vehicle Extension (s)3.03.03.03.03.03.0
Lane Grp Cap (vph)4663966691252423378
v/s Ratio Protc0.16c0.310.10c0.10
v/s Ratio Perm0.060.07
v/c Ratio0.640.220.830.150.420.30
Uniform Delay, d130.226.825.45.429.028.1
Progression Factor1.001.000.560.361.001.00
Incremental Delay, d26.71.37.70.23.12.0
Delay (s)36.928.121.82.132.030.1
Level of ServiceDCCACC
Approach Delay (s)32.116.830.7
Approach LOSCBC
Intersection Summary
HCM Average Control Delay26.1HCM Level of ServiceC
HCM Volume to Capacity ratio0.66
Actuated Cycle Length (s) 90.0Sum of lost time (s)12.0
Intersection Capacity Utilization71.0%ICU Level of ServiceC
Analysis Period (min)15
c Critical Lane Group
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Audubon Rd NChanhassen High School
2010 No-Build P.M. Peak Hour Chanhassen, MN
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Ideal Flow (vphpl)190019001900190019001900190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.04.04.04.04.0
Lane Util. Factor1.001.001.001.001.001.001.001.001.001.00
Frt1.001.000.851.001.000.851.000.851.000.85
Flt Protected0.951.001.000.951.001.000.951.000.951.00
Satd. Flow (prot)1770186315831770186315831770158317701583
Flt Permitted0.951.001.000.951.001.000.731.000.741.00
Satd. Flow (perm)1770186315831770186315831357158313841583
Volume (vph)15054010403902020060400260
Peak-hour factor, PHF0.900.900.900.900.900.900.900.900.900.900.900.90
Adj. Flow (vph)16760011444332222067440289
RTOR Reduction (vph)0050013004700202
Lane Group Flow (vph)16760064443390222004487
Turn TypeProtPermProtPermPermPermPermPerm
Protected Phases743826
Permitted Phases482266
Actuated Green, G (s)16.144.344.35.233.433.425.525.525.525.5
Effective Green, g (s)16.145.845.85.234.934.927.027.027.027.0
Actuated g/C Ratio0.180.510.510.060.390.390.300.300.300.30
Clearance Time (s)4.05.55.54.05.55.55.55.55.55.5
Vehicle Extension (s)3.03.03.03.03.03.03.03.03.03.0
Lane Grp Cap (vph)317948806102722614407475415475
v/s Ratio Protc0.09c0.320.020.23
v/s Ratio Perm0.000.010.020.010.03c0.05
v/c Ratio0.530.630.010.430.600.010.050.040.110.18
Uniform Delay, d133.516.010.941.022.017.022.422.322.823.3
Progression Factor0.880.510.251.001.001.001.001.001.001.00
Incremental Delay, d21.22.50.02.93.70.00.30.20.50.8
Delay (s)30.610.52.743.925.617.022.722.523.324.2
Level of ServiceCBADCBCCCC
Approach Delay (s)14.726.922.524.1
Approach LOSBCCC
Intersection Summary
HCM Average Control Delay20.5HCM Level of ServiceC
HCM Volume to Capacity ratio0.46
Actuated Cycle Length (s) 90.0Sum of lost time (s)8.0
Intersection Capacity Utilization55.1%ICU Level of ServiceB
Analysis Period (min)15
c Critical Lane Group
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Galpin BlvdChanhassen High School
2010 Build A.M. Peak Hour Chanhassen, MN
MovementEBLEBTWBTWBRSBLSBR
Lane Configurations
Sign ControlFreeFreeStop
Grade0%0%0%
Volume (veh/h)10077038080280130
Peak Hour Factor0.900.900.900.900.900.90
Hourly flow rate (vph)11185642289311144
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)8
Median typeNone
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume5111072422
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol5111072422
tC, single (s)4.16.86.9
tC, 2 stage (s)
tF (s)2.23.53.3
p0 queue free %89075
cM capacity (veh/h)1050192580
Direction, Lane #EB 1EB 2WB 1WB 2SB 1
Volume Total39657042289456
Volume Left111000311
Volume Right00089144
cSH1050170017001700254
Volume to Capacity0.110.340.250.051.79
Queue Length 95th (ft)9000769
Control Delay (s)3.30.00.00.0406.1
Lane LOSAF
Approach Delay (s)1.30.0406.1
Approach LOSF
Intersection Summary
Average Delay 96.4
Intersection Capacity Utilization 69.7%ICU Level of Service C
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & North School AccessChanhassen High School
2010 Build A.M. Peak Hour Chanhassen, MN
MovementWBLWBRNBTNBRSBLSBT
Lane Configurations
Sign ControlStopFreeFree
Grade0%0%0%
Volume (veh/h)0803800290760
Peak Hour Factor0.630.630.900.630.630.90
Hourly flow rate (vph)01274220460844
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median typeNone
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume2187422422
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol2187422422
tC, single (s)6.46.24.1
tC, 2 stage (s)
tF (s)3.53.32.2
p0 queue free %1008060
cM capacity (veh/h)306311137
Direction, Lane #WB 1NB 1SB 1
Volume Total1274221305
Volume Left00460
Volume Right12700
cSH63117001137
Volume to Capacity0.200.250.40
Queue Length 95th (ft)19050
Control Delay (s)12.10.09.0
Lane LOSBA
Approach Delay (s)12.10.09.0
Approach LOSB
Intersection Summary
Average Delay 7.2
Intersection Capacity Utilization 91.0%ICU Level of Service E
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Lake Hazeltine DrChanhassen High School
2010 Build A.M. Peak Hour Chanhassen, MN
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Sign ControlStopStopFreeFree
Grade0%0%0%0%
Volume (veh/h)3005014001034034063060500200
Peak Hour Factor0.900.630.900.630.630.630.900.900.630.630.900.90
Hourly flow rate (vph)33056222016378378100095556222
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median typeNoneNone
Median storage veh)
Upstream signal (ft)1069
pX, platoon unblocked
vC, conflicting volume18952879556193521023787781378
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol18952879556193521023787781378
tC, single (s)7.16.56.27.16.56.24.14.1
tC, 2 stage (s)
tF (s)3.54.03.33.54.03.32.22.2
p0 queue free %0100900100985581
cM capacity (veh/h)2975312523669839498
Direction, Lane #EB 1EB 2WB 1WB 2NB 1NB 2NB 3SB 1SB 2SB 3
Volume Total335622216378378100095556222
Volume Left3302220378009500
Volume Right05601600100000222
cSH29531256698391700170049817001700
Volume to Capacity1.150.108.930.020.450.220.590.190.330.13
Queue Length 95th (ft)969Err259001800
Control Delay (s)419.712.6Err10.512.80.00.013.90.00.0
Lane LOSFBFBBB
Approach Delay (s)165.29333.12.71.5
Approach LOSFF
Intersection Summary
Average Delay 758.9
Intersection Capacity Utilization 69.6%ICU Level of Service C
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Audubon Rd SChanhassen High School
2010 Build A.M. Peak Hour Chanhassen, MN
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Ideal Flow (vphpl)190019001900190019001900190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.04.04.04.0
Lane Util. Factor1.001.001.001.001.001.001.001.001.00
Frt1.001.000.851.001.000.851.000.851.00
Flt Protected0.951.001.000.951.001.000.951.000.95
Satd. Flow (prot)177018631583177018631583177015831770
Flt Permitted0.951.001.000.951.001.000.761.000.76
Satd. Flow (perm)177018631583177018631583141015831410
Volume (vph)6037026031089012042005703000
Peak-hour factor, PHF0.630.900.900.900.900.630.900.630.900.630.630.63
Adj. Flow (vph)9541128934498919046706334800
RTOR Reduction (vph)00199006700435000
Lane Group Flow (vph)954119034498912346701984800
Turn TypeProtPermProtPermPermPermPerm
Protected Phases743826
Permitted Phases48226
Actuated Green, G (s)5.626.526.523.043.943.927.027.027.0
Effective Green, g (s)5.628.028.023.045.445.427.027.027.0
Actuated g/C Ratio0.060.310.310.260.500.500.300.300.30
Clearance Time (s)4.05.55.54.05.55.54.04.04.0
Vehicle Extension (s)3.03.03.03.03.03.03.03.03.0
Lane Grp Cap (vph)110580492452940799423475423
v/s Ratio Prot0.05c0.220.19c0.53
v/s Ratio Perm0.060.08c0.330.130.03
v/c Ratio0.860.710.180.761.050.151.100.420.11
Uniform Delay, d141.827.422.631.022.312.031.525.222.8
Progression Factor1.001.001.000.660.500.241.001.001.00
Incremental Delay, d246.07.20.83.535.10.275.02.70.1
Delay (s)87.834.623.524.046.23.1106.527.922.9
Level of ServiceFCCCDAFCC
Approach Delay (s)36.935.861.322.9
Approach LOSDDEC
Intersection Summary
HCM Average Control Delay44.0HCM Level of ServiceD
HCM Volume to Capacity ratio1.06
Actuated Cycle Length (s) 90.0Sum of lost time (s)12.0
Intersection Capacity Utilization92.6%ICU Level of ServiceF
Analysis Period (min)15
c Critical Lane Group
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Audubon Rd NChanhassen High School
2010 Build A.M. Peak Hour Chanhassen, MN
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Ideal Flow (vphpl)190019001900190019001900190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.04.04.04.04.0
Lane Util. Factor1.001.001.001.001.001.001.001.001.001.00
Frt1.001.000.851.001.000.851.000.851.000.85
Flt Protected0.951.001.000.951.001.000.951.000.951.00
Satd. Flow (prot)1770186315831770186315831770158317701583
Flt Permitted0.101.001.000.191.001.000.751.000.741.00
Satd. Flow (perm)19518631583354186315831398158313701583
Volume (vph)320580702108904030090100400
Peak-hour factor, PHF0.900.900.900.900.900.900.900.900.900.900.900.90
Adj. Flow (vph)3566447823398944330100110444
RTOR Reduction (vph)00330015008400268
Lane Group Flow (vph)356644452339892903316011176
Turn Typepm+ptPermpm+ptPermPermPermPermPerm
Protected Phases743826
Permitted Phases44882266
Actuated Green, G (s)52.350.850.847.747.747.713.313.313.313.3
Effective Green, g (s)52.352.352.349.249.249.214.814.814.814.8
Actuated g/C Ratio0.580.580.580.550.550.550.160.160.160.16
Clearance Time (s)4.05.55.54.05.55.55.55.55.55.5
Vehicle Extension (s)3.03.03.03.03.03.03.03.03.03.0
Lane Grp Cap (vph)35810839203651018865230260225260
v/s Ratio Protc0.150.350.08c0.53
v/s Ratio Perm0.420.030.270.020.020.010.01c0.11
v/c Ratio0.990.590.050.640.970.030.140.060.050.68
Uniform Delay, d133.212.18.114.119.79.432.231.731.735.3
Progression Factor0.730.540.281.001.001.001.001.001.001.00
Incremental Delay, d239.21.80.13.622.10.10.30.10.16.8
Delay (s)63.48.32.317.841.89.532.531.831.842.1
Level of ServiceEAABDACCCD
Approach Delay (s)26.036.332.041.9
Approach LOSCDCD
Intersection Summary
HCM Average Control Delay33.2HCM Level of ServiceC
HCM Volume to Capacity ratio0.88
Actuated Cycle Length (s) 90.0Sum of lost time (s)8.0
Intersection Capacity Utilization89.9%ICU Level of ServiceE
Analysis Period (min)15
c Critical Lane Group
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Galpin BlvdChanhassen High School
2010 Build 2:30 to 3:30 PM Hour Chanhassen, MN
MovementEBLEBTWBTWBRSBLSBR
Lane Configurations
Sign ControlFreeFreeStop
Grade0%0%0%
Volume (veh/h)1103304901806060
Peak Hour Factor0.900.900.900.900.900.90
Hourly flow rate (vph)1223675442006767
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)8
Median typeNone
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume744972544
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol744972544
tC, single (s)4.16.86.9
tC, 2 stage (s)
tF (s)2.23.53.3
p0 queue free %866986
cM capacity (veh/h)859214483
Direction, Lane #EB 1EB 2WB 1WB 2SB 1
Volume Total244244544200133
Volume Left12200067
Volume Right00020067
cSH859170017001700429
Volume to Capacity0.140.140.320.120.31
Queue Length 95th (ft)1200033
Control Delay (s)5.70.00.00.021.4
Lane LOSAC
Approach Delay (s)2.80.021.4
Approach LOSC
Intersection Summary
Average Delay 3.1
Intersection Capacity Utilization 51.4%ICU Level of Service A
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & North School AccessChanhassen High School
2010 Build 2:30 to 3:30 PM Hour Chanhassen, MN
MovementWBLWBRNBTNBRSBLSBT
Lane Configurations
Sign ControlStopFreeFree
Grade0%0%0%
Volume (veh/h)0290380040350
Peak Hour Factor0.630.630.900.630.630.90
Hourly flow rate (vph)0460422063389
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median typeNone
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume938422422
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol938422422
tC, single (s)6.46.24.1
tC, 2 stage (s)
tF (s)3.53.32.2
p0 queue free %1002794
cM capacity (veh/h)2776311137
Direction, Lane #WB 1NB 1SB 1
Volume Total460422452
Volume Left0063
Volume Right46000
cSH63117001137
Volume to Capacity0.730.250.06
Queue Length 95th (ft)15604
Control Delay (s)24.50.01.7
Lane LOSCA
Approach Delay (s)24.50.01.7
Approach LOSC
Intersection Summary
Average Delay 9.0
Intersection Capacity Utilization 68.6%ICU Level of Service C
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Lake Hazeltine DrChanhassen High School
2010 Build 2:30 to 3:30 PM Hour Chanhassen, MN
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Sign ControlStopStopFreeFree
Grade0%0%0%0%
Volume (veh/h)900210540050702401001030040
Peak Hour Factor0.900.630.900.630.630.630.900.900.630.630.900.90
Hourly flow rate (vph)1000233857079782671591633344
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median typeNoneNone
Median storage veh)
Upstream signal (ft)1069
pX, platoon unblocked
vC, conflicting volume8679463331021832267378425
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol8679463331021832267378425
tC, single (s)7.16.56.27.16.56.24.14.1
tC, 2 stage (s)
tF (s)3.54.03.33.54.03.32.22.2
p0 queue free %57100670100909399
cM capacity (veh/h)23024170813528177211811134
Direction, Lane #EB 1EB 2WB 1WB 2NB 1NB 2NB 3SB 1SB 2SB 3
Volume Total10023385779782671591633344
Volume Left1000857078001600
Volume Right0233079001590044
cSH230708135772118117001700113417001700
Volume to Capacity0.430.336.330.100.070.160.090.010.200.03
Queue Length 95th (ft)5136Err9500100
Control Delay (s)32.112.6Err10.28.30.00.08.20.00.0
Lane LOSDBFBAA
Approach Delay (s)18.49152.51.30.3
Approach LOSCF
Intersection Summary
Average Delay 3959.2
Intersection Capacity Utilization 75.9%ICU Level of Service D
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Audubon Rd SChanhassen High School
2010 Build 2:30 to 3:30 PM Hour Chanhassen, MN
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Ideal Flow (vphpl)190019001900190019001900190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.04.04.04.0
Lane Util. Factor1.001.001.001.001.001.001.001.001.00
Frt1.001.000.851.001.000.851.000.851.00
Flt Protected0.951.001.000.951.001.000.951.000.95
Satd. Flow (prot)177018631583177018631583177015831770
Flt Permitted0.951.001.000.951.001.000.761.000.76
Satd. Flow (perm)177018631583177018631583141015831410
Volume (vph)1067037033021020200036010000
Peak-hour factor, PHF0.630.900.900.900.900.630.900.630.900.630.630.63
Adj. Flow (vph)1674441136723332222040015900
RTOR Reduction (vph)00176001100319000
Lane Group Flow (vph)167442353672332122208115900
Turn TypeProtPermProtPermPermPermPerm
Protected Phases743826
Permitted Phases48226
Actuated Green, G (s)2.843.643.627.468.268.221.521.521.5
Effective Green, g (s)2.845.145.127.469.769.721.521.521.5
Actuated g/C Ratio0.030.430.430.260.660.660.200.200.20
Clearance Time (s)4.05.55.54.05.55.54.04.04.0
Vehicle Extension (s)3.03.03.03.03.03.03.03.03.0
Lane Grp Cap (vph)4779367445812251041286321286
v/s Ratio Prot0.01c0.40c0.210.13
v/s Ratio Perm0.150.01c0.160.050.11
v/c Ratio0.340.940.350.800.190.020.780.250.56
Uniform Delay, d150.729.120.536.87.16.340.035.538.0
Progression Factor1.001.001.000.930.670.391.001.001.00
Incremental Delay, d24.320.01.49.10.30.018.51.92.3
Delay (s)55.049.222.043.55.12.558.437.440.3
Level of ServiceDDCDAAEDD
Approach Delay (s)39.727.244.940.3
Approach LOSDCDD
Intersection Summary
HCM Average Control Delay37.9HCM Level of ServiceD
HCM Volume to Capacity ratio0.86
Actuated Cycle Length (s) 106.0Sum of lost time (s)12.0
Intersection Capacity Utilization81.3%ICU Level of ServiceD
Analysis Period (min)15
c Critical Lane Group
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Audubon Rd NChanhassen High School
2010 Build 2:30 to 3:30 PM Hour Chanhassen, MN
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Ideal Flow (vphpl)190019001900190019001900190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.04.04.04.04.0
Lane Util. Factor1.001.001.001.001.001.001.001.001.001.00
Frt1.001.000.851.001.000.851.000.851.000.85
Flt Protected0.951.001.000.951.001.000.951.000.951.00
Satd. Flow (prot)1770186315831770186315831770158317701583
Flt Permitted0.511.001.000.221.001.000.751.000.751.00
Satd. Flow (perm)94418631583415186315831398158313981583
Volume (vph)31081010203301010030100220
Peak-hour factor, PHF0.900.900.900.900.900.900.900.900.900.900.900.90
Adj. Flow (vph)34490011223671111033110244
RTOR Reduction (vph)003004002900215
Lane Group Flow (vph)3449008223677011401129
Turn Typepm+ptPermpm+ptPermPermPermPermPerm
Protected Phases743826
Permitted Phases44882266
Actuated Green, G (s)85.677.377.372.369.569.510.910.910.910.9
Effective Green, g (s)85.678.878.873.871.071.012.412.412.412.4
Actuated g/C Ratio0.810.740.740.700.670.670.120.120.120.12
Clearance Time (s)4.05.55.54.05.55.55.55.55.55.5
Vehicle Extension (s)3.03.03.03.03.03.03.03.03.03.0
Lane Grp Cap (vph)8451385117732512481060164185164185
v/s Ratio Protc0.04c0.480.000.20
v/s Ratio Perm0.290.010.050.000.010.000.01c0.02
v/c Ratio0.410.650.010.070.290.010.070.020.070.15
Uniform Delay, d14.66.83.515.07.25.841.741.441.742.1
Progression Factor0.230.200.011.001.001.001.001.001.001.00
Incremental Delay, d20.21.50.00.10.60.00.20.00.20.4
Delay (s)1.32.90.015.17.85.841.841.541.842.5
Level of ServiceAAABAADDDD
Approach Delay (s)2.48.141.642.4
Approach LOSAADD
Intersection Summary
HCM Average Control Delay9.7HCM Level of ServiceA
HCM Volume to Capacity ratio0.56
Actuated Cycle Length (s) 106.0Sum of lost time (s)8.0
Intersection Capacity Utilization69.3%ICU Level of ServiceC
Analysis Period (min)15
c Critical Lane Group
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Galpin BlvdChanhassen High School
2010 Build P.M. Peak Hour Chanhassen, MN
MovementEBLEBTWBTWBRSBLSBR
Lane Configurations
Sign ControlFreeFreeStop
Grade0%0%0%
Volume (veh/h)803103801309060
Peak Hour Factor0.900.900.900.900.900.90
Hourly flow rate (vph)8934442214410067
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)8
Median typeNone
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume567772422
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol567772422
tC, single (s)4.16.86.9
tC, 2 stage (s)
tF (s)2.23.53.3
p0 queue free %916789
cM capacity (veh/h)1001306580
Direction, Lane #EB 1EB 2WB 1WB 2SB 1
Volume Total204230422144167
Volume Left89000100
Volume Right00014467
cSH1001170017001700510
Volume to Capacity0.090.140.250.080.33
Queue Length 95th (ft)700035
Control Delay (s)4.40.00.00.018.2
Lane LOSAC
Approach Delay (s)2.10.018.2
Approach LOSC
Intersection Summary
Average Delay 3.4
Intersection Capacity Utilization 45.9%ICU Level of Service A
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & North School AccessChanhassen High School
2010 Build P.M. Peak Hour Chanhassen, MN
MovementWBLWBRNBTNBRSBLSBT
Lane Configurations
Sign ControlStopFreeFree
Grade0%0%0%
Volume (veh/h)0100410030370
Peak Hour Factor0.630.630.900.630.630.90
Hourly flow rate (vph)0159456048411
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median typeNone
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume962456456
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol962456456
tC, single (s)6.46.24.1
tC, 2 stage (s)
tF (s)3.53.32.2
p0 queue free %1007496
cM capacity (veh/h)2726051105
Direction, Lane #WB 1NB 1SB 1
Volume Total159456459
Volume Left0048
Volume Right15900
cSH60517001105
Volume to Capacity0.260.270.04
Queue Length 95th (ft)2603
Control Delay (s)13.10.01.3
Lane LOSBA
Approach Delay (s)13.10.01.3
Approach LOSB
Intersection Summary
Average Delay 2.5
Intersection Capacity Utilization 57.1%ICU Level of Service B
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Lake Hazeltine DrChanhassen High School
2010 Build P.M. Peak Hour Chanhassen, MN
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Sign ControlStopStopFreeFree
Grade0%0%0%0%
Volume (veh/h)10002601800204029080034030
Peak Hour Factor0.900.630.900.630.630.630.900.900.630.630.900.90
Hourly flow rate (vph)111028928603244322127037833
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median typeNoneNone
Median storage veh)
Upstream signal (ft)1069
pX, platoon unblocked0.980.980.980.980.980.98
vC, conflicting volume8219163781078822322411449
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol8179143781079819309411439
tC, single (s)7.16.56.27.16.56.24.14.1
tC, 2 stage (s)
tF (s)3.54.03.33.54.03.32.22.2
p0 queue free %591005701009696100
cM capacity (veh/h)26925766910629371711481100
Direction, Lane #EB 1EB 2WB 1WB 2NB 1NB 2NB 3SB 1SB 2SB 3
Volume Total1112892863244322127037833
Volume Left111028604400000
Volume Right0289032001270033
cSH269669106717114817001700170017001700
Volume to Capacity0.410.432.700.040.040.190.070.000.220.02
Queue Length 95th (ft)48556633300000
Control Delay (s)27.514.4852.510.38.30.00.00.00.00.0
Lane LOSDBFBA
Approach Delay (s)18.1768.30.70.0
Approach LOSCF
Intersection Summary
Average Delay 155.0
Intersection Capacity Utilization 60.6%ICU Level of Service B
Analysis Period (min)15
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Audubon Rd SChanhassen High School
2010 Build P.M. Peak Hour Chanhassen, MN
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Ideal Flow (vphpl)190019001900190019001900190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.04.04.04.0
Lane Util. Factor1.001.001.001.001.001.001.001.001.00
Frt1.001.000.851.001.000.851.000.851.00
Flt Protected0.951.001.000.951.001.000.951.000.95
Satd. Flow (prot)177018631583177018631583177015831770
Flt Permitted0.951.001.000.951.001.000.621.000.76
Satd. Flow (perm)177018631583177018631583115715831410
Volume (vph)104403305002401017004303000
Peak-hour factor, PHF0.630.900.900.900.900.630.900.630.900.630.630.63
Adj. Flow (vph)164893675562671618904784800
RTOR Reduction (vph)0021000600386000
Lane Group Flow (vph)16489157556267101890924800
Turn TypeProtPermProtPermpm+ptPermpm+pt
Protected Phases74385216
Permitted Phases48226
Actuated Green, G (s)2.831.831.844.473.473.430.323.121.5
Effective Green, g (s)2.833.333.344.474.974.930.323.121.5
Actuated g/C Ratio0.020.280.280.370.620.620.250.190.18
Clearance Time (s)4.05.55.54.05.55.54.04.04.0
Vehicle Extension (s)3.03.03.03.03.03.03.03.03.0
Lane Grp Cap (vph)415174396551163988333305262
v/s Ratio Prot0.01c0.26c0.310.14c0.040.00
v/s Ratio Perm0.100.01c0.110.060.03
v/c Ratio0.390.950.360.850.230.010.570.300.18
Uniform Delay, d157.842.534.834.79.98.538.641.541.6
Progression Factor1.001.001.000.920.620.441.001.001.00
Incremental Delay, d26.028.22.39.00.40.02.22.50.3
Delay (s)63.870.737.041.06.53.840.844.141.9
Level of ServiceEEDDAADDD
Approach Delay (s)56.429.343.141.9
Approach LOSECDD
Intersection Summary
HCM Average Control Delay43.1HCM Level of ServiceD
HCM Volume to Capacity ratio0.80
Actuated Cycle Length (s) 120.0Sum of lost time (s)12.0
Intersection Capacity Utilization76.9%ICU Level of ServiceD
Analysis Period (min)15
c Critical Lane Group
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Audubon Rd NChanhassen High School
2010 Build P.M. Peak Hour Chanhassen, MN
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Ideal Flow (vphpl)190019001900190019001900190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.04.04.04.04.0
Lane Util. Factor1.001.001.001.001.001.001.001.001.001.00
Frt1.001.000.851.001.000.851.000.851.000.85
Flt Protected0.951.001.000.951.001.000.951.000.951.00
Satd. Flow (prot)1770186315831770186315831770158317701583
Flt Permitted0.431.001.000.301.001.000.731.000.741.00
Satd. Flow (perm)79918631583562186315831357158313841583
Volume (vph)22067010404402020060400290
Peak-hour factor, PHF0.900.900.900.900.900.900.900.900.900.900.900.90
Adj. Flow (vph)24474411444892222067440322
RTOR Reduction (vph)002007006000287
Lane Group Flow (vph)24474494448915022704435
Turn Typepm+ptPermpm+ptPermPermPermPermPerm
Protected Phases743826
Permitted Phases44882266
Actuated Green, G (s)99.188.088.086.681.081.011.411.411.411.4
Effective Green, g (s)99.189.589.588.182.582.512.912.912.912.9
Actuated g/C Ratio0.830.750.750.730.690.690.110.110.110.11
Clearance Time (s)4.05.55.54.05.55.55.55.55.55.5
Vehicle Extension (s)3.03.03.03.03.03.03.03.03.03.0
Lane Grp Cap (vph)7621389118146912811088146170149170
v/s Ratio Protc0.03c0.400.000.26
v/s Ratio Perm0.230.010.060.010.020.00c0.030.02
v/c Ratio0.320.540.010.090.380.010.150.040.300.20
Uniform Delay, d15.46.53.910.87.95.948.648.049.448.9
Progression Factor0.440.360.221.001.001.001.001.001.001.00
Incremental Delay, d20.21.10.00.10.90.00.50.11.10.6
Delay (s)2.53.40.910.98.85.949.148.150.549.5
Level of ServiceAAABAADDDD
Approach Delay (s)3.28.948.349.6
Approach LOSAADD
Intersection Summary
HCM Average Control Delay15.2HCM Level of ServiceB
HCM Volume to Capacity ratio0.49
Actuated Cycle Length (s) 120.0Sum of lost time (s)8.0
Intersection Capacity Utilization61.9%ICU Level of ServiceB
Analysis Period (min)15
c Critical Lane Group
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Galpin BlvdChanhassen High School
2010 Build A.M. Peak Hour MITIGATE Chanhassen, MN
MovementEBLEBTWBTWBRSBLSBR
Lane Configurations
Ideal Flow (vphpl)190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.0
Lane Util. Factor1.001.001.001.001.001.00
Frt1.001.001.000.851.000.85
Flt Protected0.951.001.001.000.951.00
Satd. Flow (prot)177018631863158317701583
Flt Permitted0.951.001.001.000.951.00
Satd. Flow (perm)177018631863158317701583
Volume (vph)10077038080280130
Peak-hour factor, PHF0.900.900.900.900.900.90
Adj. Flow (vph)11185642289311144
RTOR Reduction (vph)000470110
Lane Group Flow (vph)1118564224231134
Turn TypeProtPermPerm
Protected Phases7486
Permitted Phases86
Actuated Green, G (s)5.836.426.626.614.114.1
Effective Green, g (s)5.837.928.128.114.114.1
Actuated g/C Ratio0.100.630.470.470.230.23
Clearance Time (s)4.05.55.55.54.04.0
Vehicle Extension (s)3.03.03.03.03.03.0
Lane Grp Cap (vph)1711177873741416372
v/s Ratio Prot0.06c0.460.23c0.18
v/s Ratio Perm0.030.02
v/c Ratio0.650.730.480.060.750.09
Uniform Delay, d126.17.511.08.721.317.9
Progression Factor1.001.001.001.001.001.00
Incremental Delay, d28.22.31.90.17.20.1
Delay (s)34.39.812.98.928.518.0
Level of ServiceCABACB
Approach Delay (s)12.612.225.2
Approach LOSBBC
Intersection Summary
HCM Average Control Delay15.5HCM Level of ServiceB
HCM Volume to Capacity ratio0.73
Actuated Cycle Length (s) 60.0Sum of lost time (s)8.0
Intersection Capacity Utilization62.7%ICU Level of ServiceB
Analysis Period (min)15
c Critical Lane Group
10/18/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Lake Hazeltine DrChanhassen High School
2010 Build A.M. Peak Hour MITIGATE Chanhassen, MN
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Ideal Flow (vphpl)190019001900190019001900190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.04.04.04.04.0
Lane Util. Factor1.001.001.001.001.001.001.001.001.001.00
Frt1.000.851.000.851.001.000.851.001.000.85
Flt Protected0.951.000.951.000.951.001.000.951.001.00
Satd. Flow (prot)1770158317701583177018631583177018631583
Flt Permitted0.001.000.001.000.951.001.000.951.001.00
Satd. Flow (perm)0158301583177018631583177018631583
Volume (vph)3005014001034034063060500200
Peak-hour factor, PHF0.900.630.900.630.630.630.900.900.630.630.900.90
Adj. Flow (vph)33056222016378378100095556222
RTOR Reduction (vph)05200140003640088
Lane Group Flow (vph)33402222037837863695556134
Turn Typepm+ptpm+ptProtPermProtPerm
Protected Phases74385216
Permitted Phases4826
Actuated Green, G (s)13.19.516.913.330.373.673.612.555.855.8
Effective Green, g (s)13.19.516.913.330.375.175.112.557.357.3
Actuated g/C Ratio0.100.070.130.100.230.580.580.100.440.44
Clearance Time (s)4.04.04.04.04.05.55.54.05.55.5
Vehicle Extension (s)3.03.03.03.03.03.03.03.03.03.0
Lane Grp Cap (vph)1781162301624131076914170821698
v/s Ratio Protc0.020.00c0.130.00c0.210.200.05c0.30
v/s Ratio Permc0.400.08
v/c Ratio0.190.040.970.010.920.350.700.560.680.19
Uniform Delay, d153.656.056.352.448.614.519.456.129.022.2
Progression Factor1.001.001.001.000.810.660.811.001.001.00
Incremental Delay, d20.50.149.10.015.40.52.43.94.50.6
Delay (s)54.156.1105.452.554.910.118.060.133.422.8
Level of ServiceDEFDDBBECC
Approach Delay (s)55.4101.824.333.6
Approach LOSEFCC
Intersection Summary
HCM Average Control Delay34.2HCM Level of ServiceC
HCM Volume to Capacity ratio0.76
Actuated Cycle Length (s) 130.0Sum of lost time (s)20.0
Intersection Capacity Utilization69.6%ICU Level of ServiceC
Analysis Period (min)15
c Critical Lane Group
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Lake Hazeltine DrChanhassen High School
2010 2:30 to 3:30 PM Hour MITIGATE Chanhassen, MN
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Ideal Flow (vphpl)190019001900190019001900190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.04.04.04.04.0
Lane Util. Factor1.001.001.001.001.001.001.001.001.001.00
Frt1.000.851.000.851.001.000.851.001.000.85
Flt Protected0.951.000.951.000.951.001.000.951.001.00
Satd. Flow (prot)1770158317701583177018631583177018631583
Flt Permitted0.661.000.291.000.951.001.000.951.001.00
Satd. Flow (perm)122915835321583177018631583177018631583
Volume (vph)900210540050702401001030040
Peak-hour factor, PHF0.900.630.900.630.630.630.900.900.630.630.900.90
Adj. Flow (vph)1000233857079782671591633344
RTOR Reduction (vph)021300690001180037
Lane Group Flow (vph)1002008571007826741163337
Turn Typepm+ptpm+ptProtPermProtPerm
Protected Phases74385216
Permitted Phases48226
Actuated Green, G (s)62.810.071.514.713.228.228.22.817.817.8
Effective Green, g (s)62.810.071.514.713.229.729.72.819.319.3
Actuated g/C Ratio0.540.090.620.130.110.260.260.020.170.17
Clearance Time (s)4.04.04.04.04.05.55.54.05.55.5
Vehicle Extension (s)3.03.03.03.03.03.03.03.03.03.0
Lane Grp Cap (vph)91213694220120147740543310263
v/s Ratio Prot0.050.01c0.450.010.04c0.140.01c0.18
v/s Ratio Perm0.01c0.110.030.00
v/c Ratio0.110.150.910.050.390.560.100.371.070.03
Uniform Delay, d113.549.123.844.547.737.533.055.748.440.5
Progression Factor1.001.001.001.000.900.871.421.001.001.00
Incremental Delay, d20.10.512.40.11.21.40.15.472.20.0
Delay (s)13.649.636.244.643.933.947.061.1120.640.5
Level of ServiceBDDDDCDEFD
Approach Delay (s)38.836.939.6109.2
Approach LOSDDDF
Intersection Summary
HCM Average Control Delay50.9HCM Level of ServiceD
HCM Volume to Capacity ratio0.86
Actuated Cycle Length (s) 116.0Sum of lost time (s)8.0
Intersection Capacity Utilization78.8%ICU Level of ServiceD
Analysis Period (min)15
c Critical Lane Group
10/17/2006Synchro 6 Report
Page 1
TDI
Lyman Blvd & Lake Hazeltine DrChanhassen High School
2010 Build P.M. Peak Hour MITIGATE Chanhassen, MN
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Ideal Flow (vphpl)190019001900190019001900190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.04.04.04.0
Lane Util. Factor1.001.001.001.001.001.001.001.001.00
Frt1.000.851.000.851.001.000.851.000.85
Flt Protected0.951.000.951.000.951.001.001.001.00
Satd. Flow (prot)177015831770158317701863158318631583
Flt Permitted0.561.000.421.000.951.001.001.001.00
Satd. Flow (perm)10421583784158317701863158318631583
Volume (vph)10002601800204029080034030
Peak-hour factor, PHF0.900.630.900.630.630.630.900.900.630.630.900.90
Adj. Flow (vph)111028928603244322127037833
RTOR Reduction (vph)02550029000530018
Lane Group Flow (vph)111340286304432274037815
Turn Typepm+ptpm+ptProtPermProtPerm
Protected Phases74385216
Permitted Phases48226
Actuated Green, G (s)35.612.529.69.58.359.959.947.647.6
Effective Green, g (s)35.612.529.69.58.361.461.449.149.1
Actuated g/C Ratio0.340.120.280.090.080.580.580.460.46
Clearance Time (s)4.04.04.04.04.05.55.55.55.5
Vehicle Extension (s)3.03.03.03.03.03.03.03.03.0
Lane Grp Cap (vph)5091874061421391079917863733
v/s Ratio Protc0.050.02c0.130.000.02c0.17c0.20
v/s Ratio Perm0.03c0.060.050.01
v/c Ratio0.220.180.700.020.320.300.080.440.02
Uniform Delay, d125.042.141.544.046.211.39.819.215.4
Progression Factor1.001.001.001.000.880.711.221.001.00
Incremental Delay, d20.20.55.50.11.30.70.21.60.1
Delay (s)25.242.647.044.141.88.712.220.815.5
Level of ServiceCDDDDABCB
Approach Delay (s)37.846.712.620.3
Approach LOSDDBC
Intersection Summary
HCM Average Control Delay27.4HCM Level of ServiceC
HCM Volume to Capacity ratio0.53
Actuated Cycle Length (s) 106.0Sum of lost time (s)20.0
Intersection Capacity Utilization63.1%ICU Level of ServiceB
Analysis Period (min)15
c Critical Lane Group
10/17/2006Synchro 6 Report
Page 1
TDI