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1. Chanhassen High School (continued from 11-21-06) CITY OF CHANHASSEN 7700 Market Boulevard PO Box 147 Chanhassen, MN 55317 Administration Phone: 952.227.1100 Fax: 952.227.1110 Building Inspections Phone: 952.227.1180 Fax: 952.227.1190 Engineering Phone 952.227.1160 Fax: 952.227.1170 Finance Phone: 952.227.1140 Fax: 952.227.1110 Park & Recreation Phone: 952.227.1120 Fax: 952.227.1110 Recreation Center 2310 Coulter Boulevard Phone: 952.227.1400 Fax: 952.227.1404 Planning & Natural Resources Phone: 952.227.1130 Fax: 952.227.1110 Public Works 1591 Park Road Phone: 952.227.1300 Fax: 952.227.1310 Senior Center Phone: 952.227.1125 Fax: 952.227.1110 Web Site W'INI. ci. chanhassen. mn .us [!] MEMORANDUM TO: Planning Commission FROM: Bob Generous, Senior Planner DATE: December 5,2006 w. SUBJ: Chanhassen High School Planning Case 06-35 EXECUTIVE SUMMARY On November 21,2006, the Planning Commission held a public hearing for the Interim Use Permit and Environmental Assessment Worksheet review for the proposed Chanhassen High School site. As part of the hearing, a question was raised regarding a "bluff' on the site. The item was tabled to permit staff to investigate this issue. The Planning Commission minutes for November 21,2006 are item #3 of the December 5, 2006 Planning Commission agenda package. DISCUSSION City Code defines bluff as follows: Bluffmeans a natural topographic feature such as a hill, cliff, or embankment having the following characteristics: (1) The slope rises at least 25 feet above the toe of the bluff; and (2) The grade of the slope from the toe of the bluff to a point 25 feet or more above the toe of the bluff averages 30 percent or greater; and (3) An area with an average slope of less than 18 percent over a distance for 50 feet or more shall not be considered part of the bluff. Bluff, side of means a point at which both conditions for a "bluff" no longer exist. The side of the bluff is delineated by a line connecting the top and toe of a bluff at a location in which the slope of the bluff is less than 30 percent or the change in elevation becomes smaller than 25 feet. Bluff, toe of means the point on a bluff where there is, as visually observed, a clearly identifiable break in the slope, from flatter to steeper slope above. If no break in the slope is apparent, the toe of the bluff shall be determined to be the lower end of a 50-foot segment, measured on the ground, with an average slope exceeding 18 percent. Bluff, top of means the point on a bluff where there is, as visually observed, a clearly identifiable break in the slope, from steeper to gentler slope above. If no The City of Chanhassen . A growing community with clean lakes, quality schools, a charming downtown, thriving businesses, winding trails, and beautiful parks. A great place to live, work, and play. Planning Commission December 5,2006 Chanhassen High School Site Planning Case 06-35 Page 2 of 2 break in the slope is apparent, the top of the bluff shall be determined to be the upper end of a 50-foot segment, measured on the ground, with an average slope exceeding 18 percent. (20) Staff has, using the City's geographic information system, taken the steepest area of the parcel and determined the bottom of the apparent bluff at elevation 906 and the top at elevation 972 for an elevation change of 66 feet. The separation between these two points is 222 feet. This results in a slope of 29.7 percent, which is less than the 30 percent slope required by ordinance. Staff also used the applicant's survey of the property, done in one-foot contours, and established a bottom of bluff elevation of 905 and a top of bluff elevation of 973. The separation between these two points is 227 feet, resulting in a slope of 29.9 percent, which is less than the 30 percent slope required by ordinance. Therefore, by definition, this area is not a bluff. Additionally, staff has reviewed aerial photographs of the property for 1963 and 1979 from the Carver County Soil and Water Conservation District. Sometime between these time periods, there was a change to the property which expanded the area of the site that was not cultivated. This area corresponds to the apparent bluff area. While not conclusive, this information may support the argument that this area was mined in the past, which would lead to an increase in the steepness of the slope. RECOMMENDA TION Staff recommends adoption of the motions as specified on page 8-10 in the staff report dated November 21,2006 approving the resolution and Interim Use Permit. ATTACHMENTS 1. Aerial Topography of Slope 2. Building Pad Surveyed Topography 3. Aerial Photograph 1963 4. Aerial Photograph 1979 5. Planning Commission Staff Report Dated November 21, 2006. g:\plan\2006 planning cases\06-35 chanhassen high school\bluff memo. doc I Feet PC DATE: November 21, 2006 3 CC DATE: December 11, 2006 CITY OF CHANHASSEN REVIEW DEADLINE: December 19, 2006 CASE #: 06-35 BY: AF, BG, LH, TH, JS STAFF REPORT PROPOSAL: Interim Use Permit Request for to grade site in preparation of development. Review of an Environmental Assessment Worksheet (EAW) for the future development of the High School site APPLICANT addressing potential environmental impacts of the proposed development and making the appropriate findings and decisions on the need for an Environmental Impact Statement. (A separate public hearing will be held to review the site plan for the school building and facilities in early 2007). LOCATION: North of Lyman Boulevard, south of the Twin Cities and Western Railroad, and west of Bluff Creek APPLICANT: Anderson-Johnson Associates, Inc. Independent School District 112 7575 Golden Valley Road, Suite 200 11 Peavey Road Minneapolis, MN 55427 Chaska, MN 55318 763-544-7129 952-556-6261 PRESENT ZONING: A2, Agricultural Estate District, and PUD, Planned Unit Development 2020 LAND USE PLAN: Office Institutional and Office/Industrial ACREAGE:DENSITY: 95 N/A SUMMARY OF REQUEST: SITE DATA An Interim Use Permit to permit grading on the site in preparation for future development. LEVEL OF CITY DISCRETION IN DECISION-MAKING: The City has limited discretion in approving or denying interim use permits, based on whether or not the proposal meets the use standards outlined in the Zoning Ordinance. If the City finds that all the applicable use standards are met, the permit must be approved. This is a quasi judicial decision. b aoR nobuduA D keerC enotSrD doowre Location Map Chanhassen High School Site Interim Use Permit Planning Case No. 06-35 City of Chanhassen Galpin Blvd (C.R. 19)Tim Pinewood Cir Acorn Laner Maplewood Ter T i Chanhassen Nature Preserve m Bluff b Crt e View r w o o d L u D Oakwood Ridge k e r w o o d D r B e B n S r w i d l t e C o o r e n o e k e d D r C C r i e r d e a k D o r R n o B ri d l e Cb r e u e k d Creekview D r u B r iCrt d l e A C r Renaissance Crt e T e Cir kStone Creek Park i m b e r Commerce Drive w r o D o k d e e re C D e e n o t S r k S C CHICAGO, MILWAUKEE, ST.PAUL 8, PACIFIC RAILROAD t r o W n enL L C k re e e n S n t o E o n t S e C r e G e k a R l d p r D i k e n e r C e n oLake Drive West B t S l v d B Si t t (o Audubon Road t r n D e C ek e Ce r r n . R C o . u r 1 t 9 ) H e r o n D r d a o R r Lyman Blvd (C.R. 18) e L d y l m u o a B n B l v d t ( r C u . o R C . a 1 s 8 i l ) A Bluff Creek Preserve Osprey Lane Valley Crt Trail Ridge Valley North City of Chanhassen Ridge Osprey Lane View City of Chaska Valley Crt Alisa Lane SUBJECT Audubon Road Valley Ridge Place PROPERTY e c a l P w e i V y L V e a y l l l e l m a y SUBJECT R V i d a g e T ri al S ou th n SITE B l v d ( C . R . t r 1 u o 8 C e ) Sg un rid Audubon Road Park L y m a n B l v d ( C . R . 1 8 ) Lyman Blvd (C.R. 18) ) 7 1 . R . C ( d Chanhassen High School Interim Use Permit Planning Case 2006-35 November 21, 2006 Page 2 of 11 PROPOSAL/SUMMARY The site is located south of the Twin Cities and Western Railroad and the Stone Creek neighborhood (residential single family), west of Bluff Creek and the Bluff Creek Estates neighborhood (residential single family) as well as the Sun Ridge neighborhood (residential large lot single family), and north and east of Lyman Boulevard. To the northeast is the Chanhassen Business Center, an office/industrial park. West of Lyman Boulevard is a Chaska industrial park. The applicant is requesting an interim use permit to begin site grading to prepare the site for the future development of a high school. Approximately 230,000 cubic yards will be excavated, placed and stockpiled on site. Granular material will be imported to the site. A construction entrance, haul road, staging areas and storm water ponding will be prepared. Independent School District 112 (ISD 112) anticipates submittal of the full development review for City review in early 2007. Due to the scope of the project which includes a approximately 400,000 square-foot high school with 1,200 parking spaces and athletic fields, the development must be reviewed under an Environmental Assessment Worksheet (EAW) to investigate and develop mitigation requirements for potential negative environmental impacts. The City must determine if this environmental review will be sufficient or if an Environmental Impact Statement (EIS) review will be necessary. Notice of this public hearing has been mailed to all property owners in excess of 500 feet. Staff is recommending that there is no need for an Environmental Impact Statement (EIS) review and that the Interim Use Permit be approved subject to the conditions of the staff report. APPLICABLE REGUATIONS Chapter 7, Article III, Excavating, Mining, Filling and Grading Chapter 20, Article IV, Division 5, Interim Use Permits BACKGROUND On March 4, 2004, the Chanhassen City Council approved a Land Use Amendment to permit Office/Industrial and Office/Institutional uses on the site. ENVIRONMENTAL ASSESSMENT WORKSHEET The Environmental Assessment Worksheet provides information about a project that may have the potential for significant environmental effects. The EAW is prepared by the Responsible Governmental Unit or its agents to determine whether an Environmental Impact Statement should be prepared. The most significant potential issues associated with the proposed project are: Chanhassen High School Interim Use Permit Planning Case 2006-35 November 21, 2006 Page 3 of 11 Traffic: 1. 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 subgrade 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. 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. Wetland Impacts 2. : 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. Storm Water Runoff 3.: 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. Based on this review of the potential environmental impacts, the mitigation measures that are proposed and the level of further review that will be required prior to the construction of the high school and campus, staff is recommending that no Environmental Impact Statement is required. GRADING, DRAINAGE AND EROSION CONTROL Independent School District 112 has submitted a grading plan for the proposed Chanhassen High School site in the northwest corner of Audubon Road and Lyman Boulevard. The railroad lies to the north of the site and Bluff Creek lies to the east. Chanhassen High School Interim Use Permit Planning Case 2006-35 November 21, 2006 Page 4 of 11 The high point of the site currently runs south of the railroad and bisects the site. There is between 20 and 50 feet of fall from the high area to Lyman Boulevard. Bluff Creek lies approximately 80 feet below the high area. A gas pipeline bisects the site as it runs east-west along the property from the intersection of the railroad and Lyman Boulevard; the surface grade over the pipe varies approximately 80 feet. The proposal is to grade 230,000 cubic yards of material to prepare a building pad for the future high school. ISD 112 is not proposing to grade the site according to the development plans at this time due to the winter construction start. ISD 112 proposes to disturb the central third of the site and stockpile material south of the railroad and west of the wetland. ISD 112 does not propose to grade within the gas pipeline easement under the interim use permit. The school district has indicated that the final grading plan does not propose cut or fill over this easement, either. Due to the large gradient within the property and the restraints associated with the existing gas pipeline through the site, the project will likely require mass grading of almost the entire site. ISD 112 proposes to construct a “walk-out” style building; the lowest floor elevation of the west side of the building will be 19.5 feet higher than that of the east side of the building. This proposed building style compliments the topography of the site. Material must be excavated for the proposed building pad. The west side of the building will require between 2 and 34 feet of cut; the east side will require between 2 and 42 feet of cut. A large construction staging area is proposed west of the building pad and will be relatively flat. The proposed slope from the building pad towards the wetland will require up to 10 feet of cut. ISD 112 proposes to construct a berm along the eastern boundary of the grading to divert runoff to proposed Temporary Sedimentation Basin No. 2. The proposed berm will lie on top of the existing trunk sanitary sewer that lies west of Bluff Creek. During final grading of the site, the height of this berm should be reduced to the maximum extent practicable, otherwise additional drainage and utility easements may be required. ISD 112’s engineer indicates up to 20 feet of fill is proposed over this sanitary sewer. Based on the as-built information for the sanitary sewer, the type of pipe and pipe bedding, the proposed fill will not collapse the pipe. The developer is required to televise the section of sanitary sewer over which grading operations will occur before and after construction to determine if the site grading damaged the pipe. ISD 112 shall be responsible for repairing any sections of sanitary sewer damaged during construction. The developer must place sanitary sewer manhole sections on the existing manhole to bring the top of manhole up to the existing grade. No more than one foot of rings is allowed. Excess dirt generated from the building pad preparation is proposed to be stockpiled on the north side of the site. The top of the proposed stockpile will be approximately 38 feet higher than the current grade, or approximately 50 feet higher than the elevation of Lyman Boulevard at that location. Up to 50 feet of temporary fill will be placed at this location. The top of the temporary Chanhassen High School Interim Use Permit Planning Case 2006-35 November 21, 2006 Page 5 of 11 stockpile will be approximately 87 feet higher than the wetland that lies between Temporary Sediment Basins 3 and 4. The majority of the temporary stockpile will be a 3H:1V slope. Staff is concerned with the proposed height of the temporary stockpile and its proximity to the wetland which flows to Bluff Creek. Unfortunately, it does not seem feasible to stockpile any of this material at any other location on the site; therefore, it is critical that the development team articulate to the contractor the necessity of properly installing and maintaining, on a regular basis, the erosion control practices. EROSION AND SEDIMENT CONTROL This project proposes exposing soils over a large portion of the site during winter months. Additionally, there are wetlands in all directions down gradient of the site and Bluff Creek is located just east of the eastern property boundary. With the steep slopes proposed for the site, there are many potential areas for failure of erosion and sediment control measures. The erosion and sediment control plan should be aimed at minimizing the amount of exposed soil at any given time and preventing erosion of exposed soil. Sediment control (especially perimeter controls such as silt fence) should be viewed as a last resort. The applicant, the contractor and all subcontractors should recognize that one silt fence at the bottom of a large slope of exposed soil will not be sufficient to protect down gradient resources in even moderate precipitation or snowmelt events. Erosion Control To decrease the potential for discharge of sediment-laden water off site, the applicant should prepare a plan for phasing the grading of the project. In general, the areas within 200 feet of wetlands should be graded first and permanently stabilized as soon as possible. Disturbed areas should be stabilized as soon as possible after grading to minimize the total amount of exposed soil on site. New areas should not be graded until after previously graded areas are stabilized. Sediment & Erosion Control (SWPPP) Note 2.a.2 on Sheet C1.2 states that slopes steeper than 6:1 should be “cat tracked”. The applicant should take extra measures to ensure that this occurs because cat tracking has been shown to significantly decrease the potential for erosion on long, steep slopes. A detail should be provided for cat tracking. The haul route between the Construction Staging Area and the Temporary Stockpile Area should be shown on the 50-scale plans. All upland areas disturbed as a result of construction activities shall be immediately restored with seed and disc-mulched, covered with a wood-fiber blanket or sodded within two weeks of completion of grading in each disturbed area. If practical, a seed and blown-compost mix should be considered in lieu of dormant seed and straw mulch. It appears that erosion control blanket is proposed for steep slopes on site. The plans should be revised to call out the blanket locations and to provide a detail for blanket installation. Chanhassen High School Interim Use Permit Planning Case 2006-35 November 21, 2006 Page 6 of 11 Sediment Control Chanhassen Type II silt fence should be provided adjacent to all areas to be preserved as buffer (both 16.5-foot wetland buffers and the 20-foot “no grading” zone around the Primary Zone). The silt fence should be installed in overlapping “J-hooks” to break up the sections and provide additional water and sediment retaining capacity. Orange tree protection fence should be installed upslope from the Type 2 silt fence around the wetland between Temporary Sediment Basin No. 3 and Temporary Sediment Basin No. 4 as added protection so equipment operators do not impact the wetland by driving heavy equipment through it. The plans should be revised to include Chanhassen’s standard details where available (e.g., Detail 5300 for silt fence; Detail 5301 for rock construction entrance). It appears that detail 3 on Sheet C1.4 is intended to depict the proposed checks within the temporary drainageways shown on Sheet C1.2. This should be clarified and the checks should be installed as often as is necessary to minimize the velocities of runoff in the drainageways. The plans should be revised to show a minimum 75-foot long rock construction entrance. In lieu of the proposed outlet pipes for the temporary sediment basins, temporary perforated risers and stable emergency overflows (EOFs) are needed; details should be included in the plan. The basins should be properly sized for the watershed areas, according to NPDES requirements (i.e., the basins should provide storage below the outlet pipe for a calculated volume of runoff from at least a 2-year, 24-hour storm from each acre drained to the basin, except that in no case shall the basin provide less than 1800 cubic feet of storage below the outlet pipe from each acre drained to the basin). The outlet pipes should discharge upstream from the edge of the receiving wetlands and should be stabilized with riprap. In the present design, water is routed into the wetland in the northeast corner of the site instead of into Temporary Sediment Basin No. 4. The grading in this area of the site should be revised to ensure that all discharge from disturbed areas is directed into either Temporary Sediment Basin No. 3 or Temporary Sediment Basin No. 4 prior to discharge into the wetland. Street cleaning of soil tracked onto public streets shall include daily street scraping and street sweeping as needed. WETLANDS Four Ag/Urban wetland basins exist on-site. Pinnacle Engineering, Inc. delineated the wetlands in July 2006. It appears that no wetland impact is proposed in conjunction with the Interim Use Permit; however, the 50-scale plans should be revised to clearly depict the wetland boundary and wetland buffer areas. Wetland A is a 6.03-acre Type 2/3/6/7 wetland located in the northeast corner of the property. It contains a swale that drains the northern portion of the site to the wetland complex in the eastern portion of the site, adjacent to Bluff Creek. The wetland is dominated by reed canary grass, box elder, cottonwood, elms and willows. Chanhassen High School Interim Use Permit Planning Case 2006-35 November 21, 2006 Page 7 of 11 Wetland B is a 17.94-acre Type 2 wetland located in the west central portion of the project. It contains a swale that drains the southern portion of the site to the wetland complex in the eastern portion of the site, adjacent to Bluff Creek. The wetland is dominated by reed canary grass and contains cattails and willows. Wetland C is a 0.23-acre Type 2 wetland located along Lyman Boulevard in the southwestern corner of the property. The wetland is dominated by reed canary grass. Wetland D is a 0.40-acre Type 2/3 wetland along Lyman Boulevard on the western edge of the property. The wetland has been altered historically by farming and draintile and is dominated by corn, nightshade and reed canary grass. However, it is still a jurisdictional wetland. The applicant should consider restoring the hydrology and vegetation within this wetland in the future to obtain wetland credit. Wetland buffer areas at least 16.5 feet in width should be preserved, surveyed and staked in accordance with the City’s wetland ordinance prior to grading commencing. All wetlands and wetland buffer areas should be protected by silt fence during grading. BLUFF CREEK OVERLAY DISTRICT The site is partially within the Meadowlands Region of the Bluff Creek Overlay District. This region of the overlay district is characterized by fragmented forest communities, high quality wetlands and diverse wildlife populations. The goals set forth in the Bluff Creek Watershed Natural Resources Management Plan (BCWNRMP) for the Lowlands Region are to: 1. Preserve high-quality wetland systems, riparian areas and remaining forests; 2. Regenerate impaired ecosystems, especially wetlands, to the extent practical under the present land use constraints; 3. Re-create natural links between major natural features within the Bluff Creek corridor; and 4. Develop environmental educational opportunities within the corridor. The applicant should keep these goals in mind as a plan is developed for the site and should work with staff to achieve these goals for this property. The applicant is not proposing alteration within the Bluff Creek Primary Zone. The Primary Zone boundary and the 40-foot setback should be shown on the plans. No grading is permitted within the first 20 feet of the 40-foot setback. OTHER AGENCIES The applicant shall apply for and obtain permits from the appropriate regulatory agencies (e.g., Riley-Purgatory-Bluff Creek Watershed District, Minnesota Pollution Control Agency) and comply with their conditions of approval. Chanhassen High School Interim Use Permit Planning Case 2006-35 November 21, 2006 Page 8 of 11 RECOMMENDATION Staff recommends that the Planning Commission adopt the following two motions and adoption of the attached findings of fact and recommendation: A.Negative “The Planning Commission recommends City Council approve a resolution of Declaration of the Need for an Environmental Impact Statement for the Chanhassen High School Campus.” B.Interim Use Permit “The Planning Commission recommends City Council approve an to permit grading on the property in preparation of development, plans prepared by Anderson-Johnson Associates, Inc., dated 10-19-06, subject to the following conditions: 1.The 50-scale plans should be revised to clearly depict the wetland boundary and wetland buffer areas. 2.Wetland buffer areas at least 16.5 feet in width should be preserved, surveyed and staked in accordance with the City’s wetland ordinance prior to grading commencing. All wetlands and wetland buffer areas should be protected by silt fence during grading. 3.The applicant should keep the goals set forth in the Bluff Creek Watershed Natural Resources Management Plan (BCWNRMP) for the Lowlands Region in mind as a plan is developed for the site and should work with staff to achieve these goals for this property. The Primary Zone boundary and the 40-foot setback should be shown on the plans. No grading is permitted within the first 20 feet of the 40-foot setback. 4.The erosion and sediment control plan should be aimed at minimizing the amount of exposed soil at any given time and preventing erosion of exposed soil. Sediment control (especially perimeter controls such as silt fence) should be viewed as a last resort. The applicant, the contractor and all subcontractors should recognize that one silt fence at the bottom of a large slope of exposed soil will not be sufficient to protect down gradient resources in even moderate precipitation or snowmelt events. To decrease the potential for discharge of sediment-laden water off-site, the applicant should prepare a plan for phasing the grading of the project. In general, the areas within 200 feet of wetlands should be graded first and permanently stabilized as soon as possible. Disturbed areas should be stabilized as soon as possible after grading to minimize the total amount of exposed soil on site. New areas should not be graded until after previously graded areas are stabilized. 5.Sediment & Erosion Control (SWPPP) Note 2.a.2 on Sheet C1.2 states that slopes steeper than 6:1 should be “cat tracked.” The applicant should take extra measures to ensure that this occurs because cat tracking has been shown to significantly decrease the potential for erosion on long, steep slopes. A detail should be provided for cat tracking. 6.The haul route between the Construction Staging Area and the Temporary Stockpile Area should be shown on the 50-scale plans. Chanhassen High School Interim Use Permit Planning Case 2006-35 November 21, 2006 Page 9 of 11 7.All upland areas disturbed as a result of construction activities shall be immediately restored with seed and disc-mulched, covered with a wood-fiber blanket or sodded within two weeks of completion of grading in each disturbed area. If practical, a seed and blown-compost mix should be considered in lieu of dormant seed and straw mulch. The plans should be revised to call out erosion control blanket locations and to provide a detail for blanket installation. 8.Chanhassen Type II silt fence should be provided adjacent to all areas to be preserved as buffer (both 16.5-foot wetland buffers and the 20-foot “no grading” zone around the Primary Zone). The silt fence should be installed in overlapping “J-hooks” to break up the sections and provide additional water and sediment retaining capacity. Orange tree protection fence should be installed upslope from the Type 2 silt fence around the wetland between Temporary Sediment Basin No. 3 and Temporary Sediment Basin No. 4 as added protection so equipment operators do not impact the wetland by driving heavy equipment through it. 9.The plans should be revised to include Chanhassen’s standard details where available (e.g., Detail 5300 for silt fence; Detail 5301 for rock construction entrance). It appears that detail 3 on Sheet C1.4 is intended to depict the proposed checks within the temporary drainageways shown on Sheet C1.2. This should be clarified and the checks should be installed as often as is necessary to minimize the velocities of runoff in the drainageways. The plans should be revised to show a minimum 75-foot long rock construction entrance. 10.In lieu of the proposed outlet pipes for the temporary sediment basins, temporary perforated risers and stable emergency overflows (EOFs) are needed; details should be included in the plan. The basins should be properly sized for the watershed areas, according to NPDES requirements (i.e., the basins should provide storage below the outlet pipe for a calculated volume of runoff from at least a 2-year, 24-hour storm from each acre drained to the basin, except that in no case shall the basin provide less than 1800 cubic feet of storage below the outlet pipe from each acre drained to the basin). The outlet pipes should discharge upstream from the edge of the receiving wetlands and should be stabilized with riprap. 11.In the present design, water is routed into the wetland in the northeast corner of the site instead of into Temporary Sediment Basin No. 4. The grading in this area of the site should be revised to ensure that all discharge from disturbed areas is directed into either Temporary Sediment Basin No. 3 or Temporary Sediment Basin No. 4 prior to discharge into the wetland. 12.Street cleaning of soil tracked onto public streets shall include daily street scraping and street sweeping as needed. 13.The applicant shall apply for and obtain permits from the appropriate regulatory agencies (e.g., Riley-Purgatory-Bluff Creek Watershed District, Minnesota Pollution Control Agency) and comply with their conditions of approval. 14.All temporary stockpiles shall be temporary seeded and mulched within 7 or 14 days, in accordance with the NPDES Phase II construction site permit. Chanhassen High School Interim Use Permit Planning Case 2006-35 November 21, 2006 Page 10 of 11 15.Rock dissipation shall be installed at all pipe outlets within 24 hours of placement of the outlet pipes. 16.Slope lengths greater than 75 feet shall be broken up with a minimum 12-foot wide bench every 75 feet. 17.A minimum12-foot buffer area shall be maintained between the perimeter control and all stockpiles to provide access around the stockpiles for maintenance purposes. 18.Dewatering activities shall only be allowed after consulting with the on-site city inspector of the project to ensure compliance with the NPDES permit for dewatering activities. 19.Silt fence shall be placed parallel to contours. In locations where silt fence will cross contours, J-hooks shall be installed at 75-foot intervals. Silt fence shall not be staked on site by scaling off the proposed plan, but shall be staked by the survey crew taking shots in the field. The applicant shall contact SWCD staff prior to silt fence installation so staking on site can be reviewed to ensure compliance with this request. 20.Drainage swales and ditch cuts shall be employed during mass grading to maintain a positive flow of stormwater to the temporary basins. 21.During final grading of the site, the height of the berm over the sanitary sewer shall be reduced to the maximum extent practicable, otherwise additional drainage and utility easements may be required. 22.The developer is required to televise the section of sanitary sewer over which grading operations will occur before and after construction to determine if the site grading damaged the pipe. 23.ISD 112 shall be responsible for repairing any sections of sanitary sewer damaged during construction. 24.The developer must place sanitary sewer manhole sections on the existing manhole to bring the top of manhole up to the existing grade. 25.No more than eight inches of rings is allowed on the sanitary sewer manhole.” ATTACHMENTS 1.Findings of Fact and Recommendation. 2.Development Review Application. 3.Reduced Copy Site Reference Plan Sheet C1.1. 4.Reduced Copy Sediment & Erosion Control Plan Sheet C1.2. 5.Reduced Copy Grading & Drainage Plan Sheet C1.3. 6.Reduced Copy Grading & Drainage Plan Sheet C1.4. 7.Reduced Copy Boundary, Location, Topographic and Utility Survey. 8.Sheet C1.4A Additional Information. Chanhassen High School Interim Use Permit Planning Case 2006-35 November 21, 2006 Page 11 of 11 9.Public Hearing Notice and Affidavit of Mailing. 10.Notice of Availability of an Environmental Assessment Worksheet for Chanhassen High School. 11.Resolution. g:\plan\2006 planning cases\06-35 chanhassen high school\staff report isd 112 iup.doc CITY OF CHANHASSEN CARVER AND HENNEPIN COUNTIES, MINNESOTA FINDINGS OF FACT AND RECOMMENDATION IN RE: Application of Anderson-Johnson Associates, Inc. and Independent School District 112 for an Interim Use Permit to allow for grading of the site in preparation for the construction a proposed high school – Planning Case 06-35. On November 21, 2006, the Chanhassen Planning Commission met at its regularly scheduled meeting to consider the application of Independent School District 112 for an interim use permit for the property located orth of Lyman Boulevard, south of the Twin Cities and Western N Railroad, and west of Bluff Creek. The Planning Commission conducted a public hearing on the proposed interim use was preceded by published and mailed notice. The Planning Commission heard testimony from all interested persons wishing to speak and now makes the following: FINDINGS OF FACT 1. The properties is currently zoned Agricultural Estate District, A2. 2. The property is guided by the Land Use Plan for Office/Institutional and Office/Industrial. 3. The legal description of the properties is: See Exhibit A 4. The proposed grading and filling operations: a. Will not be detrimental to the public health, safety, comfort, convenience or general welfare of the neighborhood or the city since the hours of operation will be limited, the duration of the grading will be limited, and appropriate erosion control measures will be installed and maintained. b. Will be consistent with the objectives of the city's comprehensive plan and the zoning ordinance as well as meeting the standards for grading in Chapter 7 of the Chanhassen City Code. c. Will be designed, constructed, operated and maintained so to be compatible in appearance with the existing or intended character of the general vicinity and will not change the essential character of that area. d. Will not be hazardous or disturbing to existing or planned neighboring uses since the hours of operation will be limited, the duration of the grading will be limited, and appropriate erosion control measures will be installed and maintained. e. Will be served adequately by essential public facilities and services, including streets, police and fire protection, drainage structures, refuse disposal, water and sewer systems and schools; or will be served adequately by such facilities and services provided by the persons or agencies responsible for the establishment of the proposed use. 1 f. Will not create excessive requirements for public facilities and services and will not be detrimental to the economic welfare of the community. g. Will not involve uses, activities, processes, materials, equipment and conditions of operation that will be detrimental to any persons, property or the general welfare because of excessive production of traffic, noise, smoke, fumes, glare, odors, rodents, or trash since the hours of operation will be limited, the duration of the grading will be limited, and appropriate erosion control measures will be installed and maintained. h. Will have vehicular approaches to the property which do not create traffic congestion or interfere with traffic or surrounding public thoroughfares. i. Will not result in the destruction, loss or damage of solar access, natural, scenic or historic features of major significance. j. Will be aesthetically compatible with the. k. Will not depreciate surrounding property values. l. Will meet standards prescribed for certain uses as provided in the zoning ordinance as well as meeting the standards for grading in Chapter 7 of the Chanhassen City Code. 5. The planning report #06-35 dated November 21, 2006, prepared by Alyson Fauske, et al, is incorporated herein. RECOMMENDATION The Planning Commission recommends that the City Council approve the interim use permit for the Chanhassen High School Site. st ADOPTED by the Chanhassen Planning Commission this 21 day of November, 2006. CHANHASSEN PLANNING COMMISSION BY:___________________________________ Its Chairman 2 EXHIBIT A PROPERTY DESCRIPTION (Per Warranty Deed Document No. 148445) That part of the North Half of the Northwest Quarter of Section 22, Township 116 North, Range 23 West of the 5th Principal Meridian described as: Beginning at the north quarter corner of said Section 22, thence on an assumed bearing of North 89 degrees 05 minutes 35 seconds West, a distance of 969.75 feet along the north line of said Northwest Quarter, thence South 56 degrees 57 minutes 24 seconds West a distance of 1138.88 feet to the center line of County Road No. 117, thence South 32 degrees 02 minutes East a distance of 56.45 feet, thence Southeasterly 484.22 feet along a tangential curve to the right having a radius of 3322.60 feet, thence South 23 degrees 41 minutes East a distance of 241.78 feet to the south line of said North Half of the Northwest Quarter, thence South 89 degrees 06 minutes 46 seconds East a distance of 1570.38 feet along said south line of the North Half of the Northwest Quarter to the southeast corner thereof, thence North 0 degrees 30 minutes 30 seconds East a distance of 1326.84 feet along the east line of said Northeast Quarter to the point of beginning, according to the Government Survey thereof. Outlot B, CHANHASSEN BUSINESS CENTER, according to the recorded plat thereof. That part of the South Half of the Northwest Quarter of Section 22, Township 116, Range 23, lying easterly of the centerline of County Road 117 (Excelsior and Shakopee Road) and that part of the Southwest Quarter of the Northeast Quarter of said Section 22 lying westerly of a line running from a point on the south line of said Southwest Quarter of the Northeast Quarter distant 660.00 feet east of the southwest corner thereof to a point on the north line of said Southwest Quarter of the Northeast Quarter distant 330.00 feet east of the northwest corner thereof. Less and except the following described tract: That part of the Southeast Quarter of the Northwest Quarter of Section 22, Township 116, Range 23, Carver County, Minnesota, described as follows: Commencing at the southeast corner of the Northeast Quarter of said Section 22, thence South 89 degrees 57 minutes 53 seconds West, assumed bearing, 2649.54 feet along the south line of said Northeast Quarter to the southeast corner of said Southeast Quarter of the Northwest Quarter of Section 22, said point also being the point of beginning of the tract to be described, thence continuing South 89 degrees 57 minutes 53 seconds West 499.83 feet along said south line, thence northwesterly 247.29 feet along the center of a public roadway on a non-tangential curve concave to the northeast with a radius of 954.93 feet through a central angle of 14 degrees 50 minutes 14 seconds, chord bearing North 72 degrees 54 minutes 36 seconds West 246.59 feet, thence North 00 degrees 24 minutes 57 seconds West 592.50; thence North 89 degrees 35 minutes 03 seconds East 377.00 feet; thence South 71 degrees 53 minutes 06 seconds East 377.58 feet to a point on the east line of said Southeast Quarter of the Northwest Quarter, thence South 00 degrees 24 minutes 57 seconds East 550.00feet along said east line to the point of beginning. 3 Subject to a public roadway easement on the south side thereof and a power line easement on the east side thereof. Subject to other easements, reservations or restrictions, if any. Subject to a public roadway easement along the south side thereof and other easements, reservations or restrictions of record. Subject to an easement for utilities and ingress and egress, being 40 feet in width, lying 20 feet on each side of the following described centerline: Commencing at the southwest corner of the above-described tract; thence North 00 degrees 24 minutes 57 seconds West 321.50 feet along the west line thereof to the point of beginning of the centerline to be described; thence North 76 degrees 30 minutes 00 seconds West 45.00 feet; thence southwesterly 46.69 feet along a tangential curve concave to the southeast with radius of 50.00 feet through a central angle of 53 degrees 30 minutes 00 seconds; thence South 50 degrees 00 minutes 00 seconds West 224.89 feet tangent to said curve to a point on the center of a public roadway and said centerline there terminating. It is intended to extend or shorten the side lines of said easement so as to terminate at said centerline of the public roadway and at the west line of land described as follows: That part of the Southeast Quarter of the Northwest Quarter of Section 22, Township 116, Range 23, Carver County, Minnesota, described as follows: Commencing at the southeast corner of the Northeast Quarter of said Section 22, thence South 89 degrees 57 minutes 53 seconds West, assumed bearing, 2649.54 feet along the south line of said Northeast Quarter to the southeast corner of said Southeast Quarter of the Northwest Quarter of Section 22, said point also being the point of beginning of the tract to be described; thence continuing South 89 degrees 57 minutes 53 seconds West 499.83 feet along said south line; thence northwesterly 247.29 feet along the center of a public roadway on a non-tangential curve concave to the northeast with a radius of 954.93 feet through a central angle of 14 degrees 50 minutes 14 seconds, chord bearing North 72 degrees 54 minutes 36 seconds West 246.59 feet; thence North 00 degrees 24 minutes 57 seconds West 592.50 feet; thence North 89 degrees 35 minutes 03 seconds East 377.00 feet; thence South 71 degrees 53 minutes 06 seconds East 377.58 feet to a point on the east line of said Southeast Quarter of the Northwest Quarter; thence South 00 degrees 24 minutes 57 seconds East 550.00 feet along said east line to the point of beginning. g:\plan\2006 planning cases\06-35 Chanhassen High School\findings of fact.doc 4 Planning Case No. O~- 35 CITY OF CHANHASSEN 7700 Market Boulevard - P.O. Box 147 Chanhassen, MN 55317 - (952) 227-1100 CITY OF CHANHASSEN RECEIVED DEVELOPMENT REVIEW APPLICATION OCT 2 0 2006 CHANHASSEN PLANNING DEPT PLEASE PRINT Applicant Name and Address: Anderson-Johnson Associates, Inc. 7575 Golden Valley Road. Suite 200 Minneapolis. MN 55427 Contact: Jay Pomeroy, LLA Phone: 763.544.7129 Fax: 763.544.0531 Email: jpomeroy@ajainc.net Owner Name and Address: Chaska Area Public Schools - ISO 112 11 Peavey Road Chaska. MN 55318 Contact: Steve Pumoer Phone: 952.556.6261 Fax: 952.556.6269 Email: pumpers@district112.ora NOTE: Consultation with City staff is reQuired prior to submittal, including review of development plans Comprehensive Plan Amendment Temporary Sales Permit Conditional Use Permit (CUP) Vacation of Right-of-Way/Easements (VAG) x Interim Use Permit (IUP) Variance (VAR) Non-conforming Use Permit Wetland Alteration Permit (WAP) Planned Unit Development* Zoning Appeal Rezoning Zoning Ordinance Amendment Sign Permits Sign Plan Review X Notification Sign - $200 (City to install and remove) Site Plan Review (SPR)* X Escrow for Filing Fees/Attorney Cost** - $50 CUP/SPRNACNARlWAP/Metes & Bounds - $450 Minor SUB TOTAL FEE $ 675.00 Subdivision* An additional fee of $3.00 per address within the public hearing notification area will be invoiced to the applicant prior to the public hearing. *Sixteen (16) full-size folded copies of the plans must be submitted, including an 8%" X 11" reduced copy for each plan sheet along with a diaital copy in TIFF-Group 4 (*.tif) format. **Escrow will be required for other applications through the development contract.' Building material samples must be submitted with site plan reviews. NOTE: When multiple applications are processed, the appropriate fee shall be charged for each application. PROJECT NAME: New Hi gh School - Chanhasen LOCATION: Lyman Boulevard and Audubon LEGAL DESCRIPTION: See Attached Sheet TOTAL ACREAGE: 94.85 acres WETLANDS PRESENT: X YES NO PRESENT ZONING: A-2 (Aqricultural Estate District) REQUESTED ZONING: N/ A PRESENT LAND USE DESIGNATION: Offi ce Industri al or Publ i c/Semi -Publ i c REQUESTED LAND USE DESIGNATION: N/A REASON FOR REQUEST: An Interim Use Permi tis requested to allow for qradi nq of the proposed high school building pad in preparation for the balance of the construction to occur next year. The building pad grading work would include the excavation of approximately 230,000 cubic yards of on-site soil, placed and stockpiled on-site, import of granular material, construction entrance, haul road and staging area and storm water improvements. This application must be completed in full and be typewritten or clearly printed and must be accompanied by all information and plans required by applicable City Ordinance provisions. Before filing this application, you should confer with the Planning Department to determine the specific ordinance and procedural requirements applicable to your application. A determination of completeness of the application shall be made within 15 business days of application submittal. A written notice of application deficiencies shall be mailed to the applicant within 15 business days of application. This is to certify that I am making application for the described action by the City and that I am responsible for complying with all City requirements with regard to this request. This application should be processed in my name and I am the party whom the City should contact regarding any matter pertaining to this application. I have attached a copy of proof of ownership (either copy of Owner's Duplicate Certificate of Title, Abstract of Title or purchase agreement), or I am the authorized person to make this application and the fee owner has also signed this application. I will keep myself informed of the deadlines for submission of material and the progress of this application. I further understand that additional fees may be charged for consulting fees, feasibility studies, etc. with an estimate prior to any authorization to proceed with the study. The documents and information I have submitted are true and correct to the best of my knowledge. ~~1~~ ~r-- ~ Signature of Fee wner 10-19-06 Date 10-19-06 Date G:\pLAN\forms\Development Review Application.DOC Rev. 12/05 I I -.--....-.... 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(f1J)S4USJ1 FAX TCi'> 0lF IDI~. m~ ~...o CITY OF CHANHASSEN CARVER & HENNEPIN COUNTIES NOTICE OF PUBLIC HEARING PLANNING CASE NO. 06-35 NOTICE IS HEREBY GIVEN that the Chanhassen Planning Commission will hold a public hearing on Tuesday, November 21, 2006, at 7:00 p.m. in the Council Chambers in Chanhassen City Hall, 7700 Market Blvd. The purpose of this hearing is to consider a request for Interim Use PermitReview an Environmental an to grade site in preparation of development, and Assessment Worksheet on property zoned A2, Agricultural Estate District, and PUD, Planned Unit Development, located north of Lyman Boulevard, south of the Twin Cities and Western Railroad, and west of Bluff Creek – CHANHASSEN HIGH SCHOOL. Applicant: Anderson-Johnson Associates, Inc./Independent School District 112. A plan showing the location of the proposal is available for public review on the City’s web site at www.ci.chanhassen.mn.us/serv/plan/06-35.html or at City Hall during regular business hours. All interested persons are invited to attend this public hearing and express their opinions with respect to this proposal. Robert Generous, Senior Planner Email: bgenerous@ci.chanhassen.mn.us Phone: 952-227-1131 (Publish in the Chanhassen Villager on November 9, 2006) CITY OF CHANHASSEN AFFIDAVIT OF MAILING NOTICE STATE OF MINNESOTA) ) ss. COUNTY OF CARVER ) I, Karen J. Engelhardt, being first duly sworn, on oath deposes that she is and was on November 9, 2006, the duly qualified and acting Deputy Clerk of the City of Chanhassen, Minnesota; that on said date she caused to be mailed a copy of the attached notice of Public Hearing for Chanhassen High School- Planning Case No. 06-35 to the persons named on attached Exhibit "A", by enclosing a copy of said notice in an envelope addressed to such owner, and depositing the envelopes addressed to all such owners in the United States mail with postage fully prepaid thereon; that the names and addresses of such owners were those appearing as such by the records of the County Treasurer, Carver County, Minnesota, and by other appropriate records. Subscribed and sw~ to before me this q-l-h day of Ovt'm ~ r , 2006. 4T~~I'~'AA- - Notary P blic I ~u. I ~.;..""t~~9- KIM T. MEUWISSEN ~"" Notary Public-Minnesota ~<'.;..... 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Disclaimer This map is neither a legally recorded map nor a survey and is not intended to be used as one. This map is a compilation of records. information and data located in various city, county, state and federal offices and other sources regarding the area shown, and is to be used for reference purposes only. The City does not warrant that the Geographic Information System (GIS) Data used to prepare this map are error free, and the City does not represent that the GIS Data can be used for navigational, tracking or any other purpose requiring exacting measurement of distance or direction or precision in the depiction of geographic features. If errors or discrepancies are found please contact 952-227-1107. The preceding disclaimer is provided pursuant to Minnesota Statutes 9466.03, Subd. 21 (2000), and the user of this map acknowledges that the City shall not be liable for any damages, and expressly waives all claims, and agrees to defend, indemnify, and hold harmless the City from any and all claims brought by User, its employees or agents, or third parties which arise out of the user's access or use of data provided. Disclaimer This map is neither a legally recorded map nor a survey and is not intended to be used as one. This map is a compilation of records, information and data located in various city, county, state and federal offices and other sources regarding the area shown, and is to be used for reference purposes only. The City does not warrant that the Geographic Information System (GIS) Data used to prepare this map are error free, and the City does not represent that the GIS Data can be used for navigational, tracking or any other purpose requiring exacting measurement of distance or direction or precision in the depiction of geographic features. If errors or discrepancies are found please contact 952-227-1107. The preceding disclaimer is provided pursuant to Minnesota Statutes 9466.03, Subd. 21 (2000), and the user of this map acknowledges that the City shall not be liable for any damages, and expressly waives all claims, and agrees to defend, indemnify, and hold harmless the City from any and all claims brought by User, its employees or agents, or third parties which arise out of the user's access or use of data provided. Public Hearing Notification Area (500+ feet) Chanhassen High School Site Interim Use Permit Planning Case No. 06-35 City of Chanhassen SCANNED ABDALLAH A EL-SANJAK & 1839 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8419 ANCHOR BANK 1055 WAYZATA BLVD E WAYZATA, MN 55391-1812 BARRY L & SUZANNE L L1BENGOOD 8950 AUDUBON RD CHANHASSEN, MN 55317-8412 BRIAN T & SONYA A BENKSTEIN 2292 BOULDER RD CHANHASSEN, MN 55317-7400 CARL M JR & KIM A ILIFF 1731 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8414 CHADWICK HOUWMAN 2219 BOULDER RD CHANHASSEN, MN 55317-7400 CHET A LARSON 2259 STONE CREEK DR CHANHASSEN, MN 55317-7420 CRAIG H & HOLLY L MELL 8670 VALLEY RIDGE CT CHANHASSEN, MN 55317-8417 DANIEL J & NANCY R LYNCH 2255 BOULDER RD CHANHASSEN, MN 55317-7400 DARYL W & CATHERINE M HARTSEL 1851 SUNRIDGE CT CHANHASSEN, MN 55317-9663 ALBERT B & JANET K BEETY 2193 STONE CREEK DR CHANHASSEN, MN 55317-7415 ANDREW J KAYATIIII 8715 VALLEY VIEW PL CHANHASSEN, MN 55317-8421 BONITA ANN JUNGELS 2338 BOULDER RD CHANHASSEN, MN 55317-7401 BRUCE H & CLARICE G FEIK 1773 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8414 CHAD A & JULIE M EVEN 2198 BOULDER RD CHANHASSEN, MN 55317-7402 CHARLENE A STENDER 2321 BOULDER RD CHANHASSEN, MN 55317-7401 CHRIS B & LESLIE J ERICKSON 1831 SUNRIDGE CT CHANHASSEN, MN 55317-9663 CRAIG S & WENDY L O'CONNOR 1702 VALLEY RIDGE TRL N CHANHASSEN, MN 55317-8415 DANIEL J & PAMELA J CULHANE 2333 BOULDER RD CHANHASSEN, MN 55317-7401 DAVID D & KATHLEEN A THORP 2330 BOULDER RD CHANHASSEN, MN 55317-7401 ALVARO J & NANCY A GOMEZ 8748 VALLEY VIEW PL CHANHASSEN, MN 55317-8421 ANTHONY D & PAMELA R STRAND 8640 AUDUBON RD CHANHASSEN, MN 55317-9401 BRADLEY J & RENEE L VANBERGEN 2175 BOULDER RD CHANHASSEN, MN 55317-7402 CARL DRAY & 2245 STONE CREEK DR CHANHASSEN, MN 55317-7420 CHAD M & JILL C HAKE 2115 BOULDER RD CHANHASSEN, MN 55317-7402 CHARLES & DEBRA OLSON 1748 VALLEY RIDGE PL CHANHASSEN, MN 55317-8416 CITY OF CHASKA 1 CITY HALL PLAZA CHASKA, MN 55318-1962 DANA R BENSON & 2203 STONE CREEK DR CHANHASSEN, MN 55317-7420 DANIEL K & ROBIN L EDMUNDS 1861 SUNRIDGE CT CHANHASSEN, MN 55317-9663 DAVID HESTER & 2199 BOULDER RD CHANHASSEN, MN 55317-7402 DAVID J & LISA M KIRKBRIDE 2080 BOULDER RD CHANHASSEN, MN 55317-7407 DAVID R & CHERRI A SALTZMAN 1800 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8418 DEAN L & SHELLEY L BUSSEY 2145 STONE CREEK DR CHANHASSEN, MN 55317-7415 DEBRA LYNN LUDFORD 8615 VALLEY VIEW CT CHANHASSEN, MN 55317-8423 DONALD & JENNIFER HARMS 1783 VALLEY RIDGE PL CHANHASSEN, MN 55317-8416 DOUGLASG & SARAH P HIPSKIND 2317 BOULDER RD CHANHASSEN, MN 55317-7401 DOUGLAS VERNON JOHNSON 2322 BOULDER RD CHANHASSEN, MN 55317-7401 ERIK M & LISA A MAGNUSON 2001 STONE CREEK DR CHANHASSEN, MN 55317-7410 GARY L FELDICK & 2231 BOULDER RD CHANHASSEN, MN 55317-7400 GERHARD & HELENE A SCHOCK 2309 BOULDER RD CHANHASSEN, MN 55317-7401 DAVID KESSLER & 1750 VALLEY RIDGE TRL N CHANHASSEN, MN 55317-8415 DAVID W & L YNNETTE A BAILEY 2273 STONE CREEK DR CHANHASSEN, MN 55317-7420 DEBORAH A HUM & 1761 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8414 DELORIS B HOLASEK TRUST 2015 STAHLKE WAY CHASKA, MN 55318-3239 DONALD W & CATHY BORGMANN 2308 BOULDER RD CHANHASSEN, MN 55317-7401 DOUGLAS J WINZENBURG & 1710 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8414 EDWARD E & ELLEN L RAWSON 2266 BOULDER RD CHANHASSEN, MN 55317-7400 EUGENE C & JAN M KRUCHOSKI 2030 BOULDER RD CHANHASSEN, MN 55317-7407 GEORGE W & CAROLE A PHILLIPPE 1711 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8414 GERHARD G & SALLIE L BERGESON 2220 BOULDER RD CHANHASSEN, MN 55317-7400 DAVID M & LORI J KENDALL 2063 STONE CREEK DR CHANHASSEN, MN 55317-7410 DEAN & LOIS 9111 AUDUBON RD CHANHASSEN, MN 55317-9412 DEBRA KAY NOTERMANN 1766 VALLEY RIDGE TRL N CHANHASSEN, MN 55317-8415 DENNIS & RUTH CHADDERDON 8900 AUDUBON RD CHANHASSEN, MN 55317-8412 DOUGLAS A & CINDY L MERRIGAN 8736 VALLEY VIEW PL CHANHASSEN, MN 55317-8421 DOUGLASV & ANN M JOHNSON PO BOX 83 CHANHASSEN, MN 55317-0083 ERIC& MELISSA NOYES 8622 VALLEY VIEW CT CHANHASSEN, MN 55317-8423 GARY D & JOYCE D THEIS 1696 VALLEY RIDGETRL N CHANHASSEN, MN 55317-9401 GERALD W & JANICE K CRAWFORD 2079 BOULDER RD CHANHASSEN, MN 55317-7407 GREGG J & AMY M KLOKE 1836 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8418 GREGORY S & SHELLY M SCALLON 1814 VALLEY RIDGE TRL N CHANHASSEN, MN 55317-8424 HOA LE CA 1738 VALLEY RIDGE TRL N CHANHASSEN, MN 55317-8415 JACK R BECKER & 1751 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8414 JAMES M & JENNIFER D LARRANAGA 2318 BOULDER RD CHANHASSEN, MN 55317-7401 JAYSON & JEANETTE KIRMEIER 2094 BOULDER RD CHANHASSEN, MN 55317-7407 JEFFREY P & SARAH L WENDORF 2291 BOULDER. RD CHANHASSEN, MN 55317-7400 JEFFREY T & JUANITA M SCRIBNER 1780 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8414 JOEL E & HEIDI M LEHRKE 2329 BOULDER RD CHANHASSEN, MN 55317-7401 JOHN F & PATRICIA G VANNUCCI 1798 VALLEY RIDGE TRL N CHANHASSEN, MN 55317-8415 JOHN T MORAN 2150 BOULDER RD CHANHASSEN, MN 55317-7402 GREGORY W & SUSAN I PROVO 1762 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8414 IND SCHOOL DIST 112 11 PEAVEY RD CHASKA, MN 55318-2321 JAIME L STERBENZ & 1848 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8418 JARED & CHRISTINA A GRUNIG 1747 VALLEY RIDGE PL CHANHASSEN, MN 55317-8416 JEFFREY J & KARLA M ALTHOFF 2326 BOULDER RD CHANHASSEN, MN 55317-7401 JEFFREY R & EDITH M STEARNS 2052 BOULDER RD CHANHASSEN, MN 55317-7407 JEFFREY W & GAIL H MOODY 1800 SUNRIDGE CT CHANHASSEN, MN 55317-9663 JOEL K & KERf L JOHNSON 1806 VALLEY RIDGE TRL N CHANHASSEN, MN 55317-8424 JOHN T & JANET K ST ANDREW 1811 VALLEYRIDGETRLS CHANHASSEN, MN 55317-8419 JOSHUA T KRIENKE & 2375 STONE CREEK DR CHANHASSEN, MN 55317-7403 HADIANBARGHALAMI& 8381 STONE CREEK DR CHANHASSEN, MN 55317-7417 J T MORTON ENTERPRISES LLC 6911 YUMA DR CHANHASSEN, MN 55317-9560 JAMES K & MELISSA J CARLSON 2122 BOULDER RD CHANHASSEN, MN 55317-7402 JAY & BARBARA GRIZZLE 8760 VALLEY VI EW PL CHANHASSEN, MN 55317-8421 JEFFREY L & JENNIFER T BENKE 8643 VALLEY RIDGE CT CHANHASSEN, MN 55317-8417 JEFFREY S & KRISTI J STRANG 1701 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8414 JERALD D & LISA R STIELE 8755 VALLEY VIEW PL CHANHASSEN, MN 55317-8421 JOHN & MARDI PERLlCH 2163 BOULDER RD CHANHASSEN, MN 55317-7402 JOHN T & KELLY A LABA TT 2109 STONE CREEK DR CHANHASSEN, MN 55317-7415 JURGEN W & CAROL A SEEMANN 8401 STONE CREEK DR CHANHASSEN, MN 55317-7422 KAJ & JODI M DOERRING 2231 STONE CREEK DR CHANHASSEN, MN 55317-7420 KENNETH D & DIANNE W KEMP 2162 BOULDER RD CHANHASSEN, MN 55317.7402 KYLE S & JACKIE L DUEA 2133 STONE CREEK DR CHANHASSEN, MN 55317-7415 L YNDELL F & MARY F FREY 1822 VALLEY RIDGE TRL N CHANHASSEN, MN 55317-8424 MARK B & JENNIFER A DAVIDSON 1841 VALLEY RIDGE TRL S CHANHASSEN, MN 55317~8419 MARVIN V& CAROLE J LUECK 2019 STONE CREEK DR CHANHASSEN, MN 55317-7410 MICHAEL & JACQUELINE R MROSKO 2305 BOULDER RD CHANHASSEN, MN 55317-7401 MICHAEL D & BETTY WRIGHT 2280 BOULDER RD CHANHASSEN, MN 55317-7400 MICHAEL J & MARY M YAZCEC 1813 VALLEY RIDGE TRL N CHANHASSEN, MN 55317-8424 MICHAEL R & DANA B HOWE 2169 STONE CREEK DR CHANHASSEN, MN 55317-7415 KELLY K MORLOCK & 2325 BOULDER RD CHANHASSEN, MN 55317-7401 KEVIN & ELIZABETH ROGERS 2023 BOULDER RD CHANHASSEN, MN 55317-7407 LAWRENCE P & HOLLY WHITE 8657 VALLEY RIDGE CT CHANHASSEN, MN 55317-8417 MARK & LAURA THORNE 1827 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8419 MARK R & CARLEEN A LAPINSKI 2103 BOULDER RD CHANHASSEN, MN 55317-7402 MERLE & JANE VOLK 180 WASHINGTON VALLEY RDATTN: NETWORK R , 07921-2120 MICHAEL A & JULIE A SALENTINE 1784 VALLEY RIDGE PL CHANHASSEN, MN 55317-8416 MICHAEL D MUFFENBIER & 8652 VALLEY RIDGE CT CHANHASSEN, MN 55317-8417 MICHAEL J KRYCH & 2127 BOULDER RD CHANHASSEN, MN 55317-7402 NANCY L WHA YLEN 2334 BOULDER RD CHANHASSEN, MN 55317-7401 KENNETH A & MARCIA S STRAND 8631 VALLEY VIEW CT CHANHASSEN, MN 55317-8423 KRISTOPHER E & MINDI L H DAHL 1774 VALLEY RIDGE TRL N CHANHASSEN, MN 55317-8415 LDW PROPERTIES LLC 1340 PARK RD CHANHASSEN, MN 55317-9527 MARK A & NANCIANN S OLSON 1792 VALLEY RIDGE TRL N CHANHASSEN, MN 55317-8415 MARK R & LAURA G JOHNSON 1807VALLEY RIDGE TRL N CHANHASSEN, MN 55317-8424 MERLE L & ELlZABETHJ OELKE 2242 BOULDER RD CHANHASSEN, MN 55317-7400 MICHAEL C & JENNIFER ANDERSON 8772 VALLEY VI EW PL CHANHASSEN, MN 55317-8421 MICHAEL J & JOANNE COCHRANE 1751 SUNRIDGE CT CHANHASSEN, MN 55317-9663 MICHAEL JOHN HOLLANDS & 2051 BOULDER RD CHANHASSEN, MN 55317-7407 NEIL BUTCHART & 1796 VALLEY RIDGE PL CHANHASSEN, MN 55317-8416 NORMAN E & KATHLEEN EVILSIZER 2207 BOULDER RD CHANHASSEN, MN 55317-7400 PAMELA K KERBER 8743 VALLEY VIEW PL CHANHASSEN, MN 55317-8421 PATRICK L & SHARON M ARBOGAST 1801 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8419 PAUL P & AMINA M RINKES 2208 BOULDER RD CHANHASSEN, MN 55317-7400 PETER G & KRISTIN A TERRELL 2136 BOULDER RD CHANHASSEN, MN 55317-7402 RICARDOA & RAYLENE S SEGURA 1740 VALLEY RIDGE TRL S CHANHASSEN,MN 55317-8414 RICHARD J & PAMELA E SCHWARZ 2157 STONE CREEK DR CHANHASSEN, MN 55317-7415 ROBERT J & CHRISTINE R FINN 2108 BOULDER RD CHANHASSEN, MN 55317-7402 RONALD S & LAURIE A BLUM 2081 STONE CREEK DR CHANHASSEN, MN 55317-7410 SCOTT A HANSON & 2267 BOULDER RD CHANHASSEN, MN 55317-7400 OUTHAI SOLEY A & 1700 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8414 PATRICK A & BRENDA J TODD 1772 VALLEY RIDGE PL CHANHASSEN, MN 55317-8416 PAUL & LINDA SPEKMAN 2121 STONE CREEK DR CHANHASSEN, MN 55317-7415 PAUL R & JENNIFER A SPORS 8658 VALLEY RIDGE CT CHANHASSEN, MN 55317-8417 PHEAVANH SOUVANNALATH & 1829 VALLEY RIDGE TRL N CHANHASSEN, MN 55317~8424 RICHARD D &.CHRISTINE M BALM 2093 BOULDER RD CHANHASSEN, MN 55317-7407 RICHARD L LINDSTROM & 2642 COMMERCE BLVD MOUND, MN 55364-1402 ROBERT T & AIMEE M O'MALLEY 1721 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8414 RORY D & AMY J LEA 2313 BOULDER RD CHANHASSEN, MN 55317-7401 SCOTT H & SUE J FERRELL 2243 BOULDER RD CHANHASSEN, MN 55317-7400 P SCOTT & JENNIFER G PHARIS 1815 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8419 PATRICK C & MICHELLE MCNALLAN 2287 STONE CREEK DR CHANHASSEN, MN 55317-7420 PAUL L & LYNETTE M ERICKSON 2217 STONE CREEK DR CHANHASSEN, MN 55317-7420 PAUL S & LAURA E GRAVES 8634 VALLEY VIEW CT CHANHASSEN, MN 55317-8423 PHILIP D & MARGARET STANDAFER 8767 VALLEY VIEW PL CHANHASSEN, MN55317 -8421 RICHARD J & CHERYL A HARTMAN 2254 BOULDER RD CHANHASSEN, MN 55317-7400 ROBERT FU & 1718 VALLEY RIDGE TRL N CHANHASSEN, MN 55317-8415 RODDY Y & LAURIE L W ZIVKOVICH 2337 BOULDER RD CHANHASSEN, MN 55317-7401 SALLY E STUCKEY 1785 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8414 SCOTT T & NICOLE M BRUSH 2301 BOULDER RD CHANHASSEN, MN 55317-7401 STEPHEN B & SANDRA L MEYER 8724 VALLEY VIEW PL CHANHASSEN, MN 55317-8421 THEO A & TERRY L JENSON 2065 BOULDER RD CHANHASSEN, MN 55317-7407 THOMAS R & AMY B EDSTROM 10 HILL ST CHANHASSEN, MN 55317-9586 THOMAS V & BEVERLY L ANTILLEY 2361 STONE CREEK DR CHANHASSEN, MN 55317-7403 TIMOTHY & BRENDA MOORE 1812 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8418 TIMOTHY J & MARY C KRAFT 2279 BOULDER RD CHANHASSEN, MN 55317-7400 TODD A & JILL M GATES 1795 VALLEY RIDGE PL CHANHASSEN, MN 55317-8416 TRENT A & KIMBERLY M DAVID 1797 VALLEY RIDGE TRL N CHANHASSEN, MN 55317-8415 WILLIAM M & LAURI J WEISMAN 1771 VALLEY RIDGE PL CHANHASSEN, MN 55317-8416 K&V LEASING LLC 118 PEAVEY CIR CHASKA, MN 55318-2347 STEPJEN J & MARY P MONSON 8850 AUDUBON RD CHANHASSEN, MN 55317-9407 THOMAS A & SUSAN A KODET 1741 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8414 THOMAS S & SUSAN M TISCHER 8729 VALLEY VIEW PL CHANHASSEN, MN 55317-8421 THOR C & LYNN M HEIMDAHL 8671 VALLEY RIDGE CT CHANHASSEN, MN 55317-8417 TIMOTHY G GEEHAN 1819 VALLEY RIDGE TRL N CHANHASSEN, MN 55317-8424 - TIMOTHY J & MELISSA C MCNEILL 1824 VALLEY RIDGE TRL S CHANHASSEN, MN 55317-8418 TODD M & DEBORAH S DOLAN 2187 BOULDER RD CHANHASSEN, MN 55317-7402 WILLIAM B & TERRE 0 KEMBLE 1782 VALLEY RIDGE TRL N CHANHASSEN, MN 55317-8415 TWIN CITIES & WESTERN RAILROAD 2925 12TH ST E GLENCOE, MN 55336-3368 LAKE REGION MFG CO INC 340 LAKE HAZELTINE DR CHASKA, MN 55318-1034 STEVE BARKER & 8712 VALLEY VIEW PL CHANHASSEN, MN 55317-8424 THOMAS M & CAROLYN 0 THOMSON 2186 BOULDER RD CHANHASSEN, MN 55317-7402 THOMAS TODD COOK & 2037 BOULDER RD CHANHASSEN, MN 55317-7407 THOR E & DAWN K SMITH 2139 BOULDER RD CHANHASSEN, MN 55317-7402 TIMOTHY J & KATHLEEN C BATTIS 2066 BOULDER RD CHANHASSEN, MN 55317-7407 TIMOTHY N & TERRI LRENDALL 2174 BOULDER RD CHANHASSEN, MN 55317-7402 TODD M & JONI J NELSON 8610 VALLEY VIEW CT CHANHASSEN, MN 55317-8423 WILLIAM 0 & LEZLlE M DAWSON 2181 STONE CREEK DR CHANHASSEN, MN 55317-7415 VICORP RESTAURANTS INC 400 48TH AVE W DENVER, CO 80216-1806 ROLAND A STINSKI 3647 MCKINLEY ST NE MINNEAPOLIS, MN 55418-1599 DELORIS B HOLASEK TRUST 2015 STAHLKE WAY CHASKA, MN 55318-3239 NOTICE OF AVAILABILITY OF AN ENVIRONMENTAL ASSESSMENT WORKSHEET FOR CHANHASSEN HIGH SCHOOL An Environmental Assessment Worksheet (EAW) has been prepared by the City of Chanhassen to assess the potential environment impacts related to the proposed development of a public high school within the City of Chanhassen. A 95-acre site located north of Lyman Boulevard (CSAH 18), south of the Twin Cities and Western Railroad and west of Bluff Creek in Chanhassen, Minnesota, is proposed for development of a 400,000 square-foot high school building and campus to be open in the fall of 2009. The EAW describes the plan for the high school campus. Copies of the EAW are available for public review at the following locations: On the web: http://www.ci.chanhassen.mn.us/serv/plan/06-35.html City of Chanhassen Community Development Department 7700 Market Boulevard Chanhassen, MN 55317 Carver County Library - Chanhassen Branch 7711 Kerber Boulevard Chanhassen, MN 55317 The public will be given an opportunity to comment on the EAW for the proposed project at a public meeting to be held November 21, 2006 at Chanhassen City Hall. Public comments on the proposed project will be accepted by the City through December 11, 2006. Comments should be submitted to: Robert Generous, AICP City of Chanhassen 7700 Market Boulevard P.O. Box 147 Chanhassen, MN 55317-0147 e-mail: bgenerous@ci.chanhssen.mn.us phone: (952) 227-1131 fax: (952) 227-1110 CITY OF CHANHASSEN CARVER AND HENNEPIN COUNTIES, MINNESOTA DATE: December 11, 2006 RESOLUTION NO: 2006- MOTION BY: SECONDED BY: A RESOLUTION DECLARING NO NEED FOR AN ENVIRONMENTAL IMPACT STATEMENT FOR CHANHASSEN HIGH SCHOOL INDEPENDENT SCHOOL DISTRICT 112 WHEREAS, an Environmental Assessment (EA) was prepared for the Chanhassen High School according to the Environmental Quality Board (EQB) regulations; and WHEREAS, notice of the EA was published in the EQB Monitor on November 6, 2006; and WHEREAS, copies of the EA were mailed to all of the agencies and organizations on the EQB official EA distribution list; and WHEREAS, the comment period for the Chanhassen High School EA ended on December 6, 2006; and NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Chanhassen, Minnesota that findings in the document titled “Findings of Fact Regarding a Need for Environmental Impact Statement”, Chanhassen High School, be incorporated herein by reference. BE IT FURTHER RESOLVED that a determination is herby made that the preparation of an Environmental Impact Statement (EIS) for the project, which is the subject of the EA, is not needed by on application of the following criteria to the factual information contained in the EAW: 1.Type, extent and reversibility of environmental effects; 2.Cumulative potential effects of related or anticipated future projects; 3.The extent to which environmental effects are subject to mitigation by ongoing public regulatory authority; and 4.The extent to which environmental effects can be anticipated and controlled as a result of other environmental studies undertaken by public agencies or the proposer, or an EIS previously prepared on similar projects. th Passed and adopted by the Chanhassen City Council this 11 day of December, 2006. ATTEST: Todd Gerhardt, City Manager Thomas A. Furlong, Mayor YES NO ABSENT g:\plan\2006 planning cases\06-35 chanhassen high school\ea\resolution negative declaration.doc 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. 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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,. 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'~'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