PRELIMINARY STAFF PLANNING REPORT TO THE WALWORTH COUNTY ZONING AGENCY X CONDITIONAL USE

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1 This report was prepared prior to the public hearing. This report may be supplemented or amended to reflect the review of additional information presented at the public hearing and written material submitted up to the meeting at which the decision is made by the Walworth County Zoning Agency. PRELIMINARY STAFF PLANNING REPORT TO THE WALWORTH COUNTY ZONING AGENCY TYPE OF PETITION: REZONE X CONDITIONAL USE NAME: Geneva Joint No. 4 School District Owner, Jeffrey Klaisner - Applicant LOCATION: The property of concern is located in the SE ¼ of Section 33, Geneva Township and is identified as Tax Parcel J G-33-6E and part of 6G. TOWN RESPONSE: Approved Denied: No Action: X_ Tabled ZONING: The property is zoned P-1 Recreational Park District. PROJECT DESCRIPTION: The application indicates: The property owner is requesting conditional use approval on land zoned P-1 Park District for expansion of a school in excess of 25% of the original structure requiring conditional use as if establishing the structure anew. The request includes the location of an access driveway on a proposed easement to be on the adjacent property to the south and a stormwater management facility to be constructed beneath the parking lot. The conditional use permit would allow for addition to the existing Woods School building to be used for additional classrooms, a gymnasium and serving kitchen. The plan would also provide for better traffic circulation and parking improvements. CONFORMANCE WITH COUNTY LAND USE PLAN: The Walworth County 2035 Land Use Plan identifies this area as the G Governmental and Institutional land use category. COMPATIBILITY WITH SURROUNDING LAND USES: To the north are properties zoned A-2 and R-1. To the east are lands zoned R-1 To the south and west is property zoned A-2. SITE CHARACTERISTICS: The following soil types are found on this site: MyB Class II MyC2 Class III Miami silt loam, 2 to 6% slopes Miami silt loam, 6 to 12% slopes, eroded

2 IMPACT ON ROADS AND TRAFFIC: The site is served by Snake Road to the east of the parcel. OTHER RELEVANT DATA RECOMMENDATIONS: The new access drive on the adjacent parcel to the south would need to be subject to a recorded perpetual easement. APPLICATION STATUS: X COMPLETE INCOMPLETE General: 1. Approved per plans submitted for a school expansion for new classrooms, a gymnasium and serving kitchen with adjacent A-2 zoned school uses of recreational fields, access to the back of the school and driveway access easements with all additional conditions. 2. Outdoor lighting shall be shielded and directed on site. The owner will need to obtain approval of a lighting plan prior to installing any type of sports field lights for nighttime use. 3. The school shall be responsible for maintaining proper liability insurance at all times on the property. 4. Must meet all Federal, State, County and local regulations. 5. Access shall be as indicated on the approved plan. Use of the athletic field shall be by the school and the parking for the school shall be used exclusively during use of the field. 6. The owner shall obtain Land Disturbance, Erosion Control and stormwater approval if required by Ordinance. 7. If the Land Management Department determines that changes in either the character of the use or the intensity of the use are not consistent with this approval, then those changes must be brought before the County Zoning Agency for approval. 8. Failure to actively exercise this conditional use within three years of the approval date shall result in automatic dismissal without prejudice. The property owner may request a time extension for actively exercising the conditional use. A time extension for actively exercising the conditional use must be requested in writing during the original three year period. Any extension requested during the three year active exercise period greater than one year beyond the original three year period shall require additional Town and County committee approvals. Specific: 9. The property owner of the adjacent lease area on tax parcel J G-33-6G shall record a perpetual access easements for the driveway along the south property line of the school.

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8 Geneva Joint No. 4 School District CU for a school addition W/ driveway access on the Adjacent Parcel Section 34, Geneva Township Zoning Map

9 Geneva Joint No. 4 School District CU for a school addition W/ Driveway on the Adjacent Parcel Section 34, Geneva Township Land Use Plan

10 Geneva Joint No. 4 School District CU for a school addition W/ Driveway on the Adjacent Parcel Section 34, Geneva Township Soils & Topo Map

11 Walworth County Land Use and Resource Management Department Land Conservation Division Preliminary Storm Water Management Review Letter Applicant: Geneva Joint 4 School District Woods School (Jeffrey Klaisner, Applicant) Project: Building additions, including parking areas to Woods Elementary School Project Location: Town of Geneva Tax Key Parcel (s): JG E Name of Receiving Water: Unnamed tributary to Geneva Lake Proposed Disturbed Area: 116,865 square feet Preliminary storm water management plan prepared by: Nielsen Madsen &Barber, Jason Christensen, P.E. Preliminary Plans Reviewed: This review is based on a Storm Water Management Plan submitted to Walworth County on March 29, 2017 County Authority: Chapter 26 (Environment) Walworth County Code of Ordinances (Article I and Article II) State Performance Standards: NR 151, (Runoff Management) Subchapter III, Non-Agricultural Performance Standards. 1. Purpose of Review: The purpose of this preliminary storm water review letter is to insure that site planning for a land development plan accounts for compliance with the County and State Storm Water Management Performance Standards. A preliminary storm water management plan includes sufficient analysis to verify storm water management practices are planned consistent with acceptable technical standards and land is allocated to manage storm water runoff generated under full development conditions proposed. A preliminary storm water plan identifies site limitations and opportunities early in the site-planning phase and serves to prevent conflict with other requirements or development features. The preliminary storm water management plan includes a site assessment to determine the site and soil characteristics that confirm the feasibility of any proposed storm water management practice and effect the placement, design, construction and maintenance of planned storm water management practices. The preliminary storm water management review provides the applicant with information relevant to state and county storm water management performance standards applicable to the proposed development plan and provides guidance and recommendations for preparation of final engineering plans. If a Conditional Use Permit is approved by Walworth County Zoning Agency, to undertake the proposed additions to the Woods Elementary School, a Walworth County Construction Site Erosion and Sediment Control and Storm Water Management Permit must be obtained prior to commencing any land disturbing construction activities on the parcel. 2. Current land use conditions: The current use or land cover of subject to this preliminary storm water management review includes an existing school building, parking areas, sidewalks, landscape areas and a storm water management basin, constructed to serve school improvements undertaken in Wetlands, waterways or other environmental resources were not found to be present on the parcel, subject to the development proposal. 3. Proposed conditions: The preliminary storm water plan submitted for this review indicates that proposed building additions will 3. cover 19,200 square feet. In addition, parking, driveways and sidewalks are planned for construction. The school is served by a private on-site waste disposal system and a community well located off-site. 4. Planned storm water management practices: The following storm water management practices are planned to service the proposed school improvements are described in the storm water management narrative and shown on storm water management site plan set: A proprietary Underground Detention System (Contech) will be installed to collect and manage storm water runoff to meet County and State Storm Water Management Performance standards for peak discharge and water quality. A storm-sewer system will be installed to convey storm water runoff to the proprietary underground detention system. 5. Compliance with Walworth County and Wisconsin storm water management performance standards. A storm water management plan shall include storm water management practices to meet the following storm water management standard requirements: Peak Discharge Performance Standard: By design, storm water management practices must be established to insure the post-development peak storm water discharge rate does not exceed the pre-development discharge rates for rainfall depths for the 1-year, 2-year, 10-year, and 100-year, 24-hour storm events. Peak discharges shall be calculated using TR-55. This storm water management performance requirement apples to each storm water discharge point independently and can not be averaged for the development site.

12 Woods Elementary School Preliminary Storm Water Review Letter April 5, 2017 Page Two The preliminary storm water management plan includes modeling and documentation verifying the proposed underground detention system will provide sufficient temporary storage of storm water runoff and outlet control to manage release rates to meet the County Storm Water Performance Standard for peak discharge. Infiltration Performance Standard: Best management practices must be planned, designed, installed and maintained to achieve state and county storm water infiltration performance standard under built conditions. The supplemental plan documentation for the storm water management plan prepared for this project states that due to the site soil conditions of the project site, this development will meet an exemption criteria from the County Storm Water Management Performance Standard for Infiltration. This conclusion was based on an evaluation and interpretation of the site using the Web Soil Survey published by the Natural Resources Conservation Services (USDA) rather than an on-site soil evaluation following the protocol and procedures specified in WDNR Conservation Practice Code #1002, Site Evaluation for storm water infiltration. An additional soil investigation and evaluation must be conducted of the parcel to verify that this project site meets the exemption requirement. This soil evaluation is required with the submittal of the final construction site erosion and sediment control and storm water management plan for County permit coverage. Total Suspended Solids Performance Standard: Best management practices must be planned, designed, installed and maintained to control total suspended solids TSS, carried in storm water runoff under built-conditions. The County Land Conservation Division and WDNR have agreed that the proposed additions to the school are considered redevelopment and the storm water management performance standard for water quality will be a 40% reduction in total suspended solids, as compared to no management controls. The proposed proprietary underground detention system is designed to maintain 3 feet of water depth for the settling of solids carried in runoff and collected in the proposed proprietary detention system. Preliminary SLAMM modeling has been submitted to verify this performance standards is achieved. Protective Area Performance Standard: A protective area must be established and maintained adjacent to waterways and wetlands. The width of the protective areas varies and is based on the ecological classification of the waterway and wetland. Wetlands, waterways or other environmental resources were not found to be present on the parcel, subject to the development proposal. This performance standard does on apply on this project site. 6. Compliance with Storm water management practice technical standards. All proposed storm water management practices must be planned, designed, constructed and maintained according to WDNR and Walworth County technical and conservation standards. The County or the State does not have technical standards for the proposed underground detention system and the storm sewer collection system.. A professional engineer, licensed in the State of Wisconsin, will have the principle responsibility for the design, construction implementation and inspection and final certification verifying the as-built construction of the underground detention system 7. Separation Distances from Wells, Storm Water Management Practices, Storm Collectors, and Sanitary Sewer System: Separation distances for the underground detention system and storm collection systems from the privately operated on-site waste disposal system should be verified and complied with. 8. Long-term Operation and Maintenance Plan, Agreement and Recording. A preliminary operation and maintenance plan for the underground detention system and a Storm Water Practices and Structures Maintenance Agreement were prepared and submitted with the Preliminary Storm Water Management Plan. The purpose of this operation and maintenance plan is to identify inspection tasks and schedules, defects, and maintenance actions needed. The Maintenance Agreement is an instrument attached to the parcel deed is to document the presence of the underground detention system, assign maintenance responsibilities and insure the operation and maintenance plan is implemented. The draft Agreement assigns significant responsible to the Town of Geneva, to insure the Woods School performs their maintenance responsibilities for the underground detention system. Prior to submitting the final storm water management plan for permitting purposes, the Town of Geneva must agree to perform the responsibilities listed in the Storm Water Management Practice Agreement

13 Woods Elementary School Preliminary Storm Water Review Letter April 5, 2017 Page Three 9. A county-approved construction site erosion control plan and permit must be approved by the Walworth County Land Conservation Division prior to the start of any land disturbing activities, including demolition, on the parcel. The Construction Site Erosion Control Plan must comply with the provisions contained in Article II of the Chapter 26 of the Walworth County Code of Ordinances. A WNDR Storm Water Permit, pursuant to NR216, must be obtained for the construction activities proposed on the parcel. A preliminary grading and erosion control plan was included in the preliminary storm water management plan submitted, (Sheet C5 of the plan set). It was determined the site grading and erosion control plan submitted is preliminary only and will need to be revised to include the plan elements contained in Article II of the Chapter 26 of the Walworth County Code of Ordinances, related to Construction Site Erosion and Sediment Control. 10. Financial guarantee. A condition of approval for the construction site erosion control and storm water management permit will require the responsible party obtain proof of financial assurance covering the cost of the storm water management practices and construction site erosion control practices. The amount, duration and conditions of release of the financial assurance will be determined upon final engineering and must comply with Section of the Walworth County Code of Ordinances. The final storm water management plan and construction site erosion and sediment control plan must include a cost estimate oto implement each of the planned best management practices for storm water management, sediment control during construction and site stabilization. Preliminary Storm Water Review Prepared by: Fay U. Amerson, Urban Conservation Specialist, Walworth County Land Conservation Division Date Review Complete: 4/5/2017