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HomeMy WebLinkAbout9E - Public Works Design Manual CITY COUNCIL AGENDA REPORT MEETING DATE: AGENDA #: PREPARED BY: JULY 16,2007 9E LARRY POPPLER, ASSISTANT CITY ENGINEER AGENDA ITEM: CONSIDER APPROVAL OF A RESOLUTION APPROVING THE PUBLIC WORKS DESIGN MANUAL DISCUSSION: Introduction The purpose of the Public Works Design Manual is to provide a standard for developers, builders and their engineers as well as City engineering and consulting personnel, for use in design, construction, and connection to public infrastructure facilities within the City. Historv On February 20, 1996, the City Council passed Resolution 96-21 approving the original Public Works Design Manual. On January 22, 2002, the City Council passed Resolution 02-09 approving an updated version of the Public Works Design Manual. Since the most recent update in 2002, changes in technology, State Statute, and MnDOT revisions have occurred. In addition, City Staff has discovered that certain City requirements are not working as intended. The Public Works Design Manual is a technical reference for residents, developers and their engineering consultants for the design and construction in the City of Prior Lake. The manual, which incorporates standards used by other cities, has been refined by the Engineering Department Staff over the past five years. The manual is referenced as a standard in both the subdivision ordinance and the standard Development Contract. Current Circumstances The Public Works Design Manual contains the following information: . Permitting requirements . Grading, drainage, and erosion control standards . Design standards for utilities, streets, and site restoration . Construction Plan requirements . Construction inspection and testing . Standard Detail Plates showing construction standards . Commercial Construction Plan requirements . Hydrology Rules . City Policies A copy of the manual in included with this agenda packet. This manual will be subject to change from time to time as technology changes. Many of our standards are based on technical documents researched by the Minnesota Department of Transportation. As better www.cityofpriorlake.com Phone 952.447.9800 / Fax 952.447.4245 construction techniques are developed, we will want to take advantage of improvements and incorporate them into our standards. All proposed changes to the manual will be submitted for Council approval. ISSUES: The major changes to the design manual are as follows: Chanaes to the City Standard Plates - As a result of technology many of the City's Standard Plates were outdated. An update to each standard plate was necessary to bring the plates up to current design practices. In addition, the standard plates were formatted to a single standard. Commercial Standards - The current Public Works Design Manual does not give guidance on commercial site designs. The updated version of the Public Works Design Manual will allow developers to preview City requirements prior to submission. In recent years, much more commercial building has occurred which illustrates the need for commercial standards. Permits - Each of the permits administered by the Public Works Department were updated to clearly communicate permit requirements. In addition each permit was formatted to a single standard. Residential Standards - A new residential standards section was added to the Public Works Design Manual to clarify driveway standards, right of way/easements, ownership of utilities, conservation of wetland buffers, and the Gopher State One Call system. As-Builts - Once a project has been completed by a Contractor, the Public Works Design Manual and Development Contract require that drawings showing the improvements be submitted to the City. These drawings are indexed and available to City and the public for future improvement projects, emergency situations, or for general locating. As a part of the update, new requirements on how these items are shown and digital formatting requirements were updated. This formatting will allow City Staff to more easily incorporate the digital information into the City GIS database. Outlots for City Utilities - A new requirement was added to the Public Works Design Manual that prohibits public utilities on private property. Currently public utilities are located within easement on private property, however recent litigation has shown that easements on private property are ignored or forgotten. By placing utilities on City owned property, property owners will not be able to place trees, fences, landscaping, or other features over public utilities. In addition, developers may revise their design to avoid such instances. Additional Exhibits - The addition of exhibits will help communicate City Policy and protocol. A new Parkland Construction Policy clearly illustrates grading, topsoil, and seeding requirements for new City parks. Building Permit and Final Grading checklists allows builders to know what the City looks for in our review and inspection of residential housing units. Restrictions on earlv and late season Pavina - A revision to the Public Works Design Manual restricts paving prior to removal of seasonal road restrictions and states final paving dates of September 30th for wear course and November 1st for base course paving and curb construction. In recent years, it has been demonstrated that road settlements occur when late season paving is allowed. While the developers repair these settled areas prior to acceptance, the continuity of the street is compromised. Scott County and State Riaht of Way Standards - Based on our history with MnDOT and Scott County, a section was added to the Public Works Design Manual that offers guidance when working in these corridors. Recent issues with developments abutting State and County roadways has necessitated this section. City Standard Specifications - The City of Prior Lake Technical Specifications shown in Exhibit T requires additional modification. A future agenda item will cover additional updates to this exhibit. FINANCIAL IMPACT: Updating City Standards and clarifying City requirements to the Public will reduce confusion and City Staff review time. Certain revisions to the Public Works Design Manual may increase costs to developers, however these revisions should reduce future City Staff time and potential litigation. Conclusion Updating of the Public Works Design Manual is necessary and should be approved. ALTERNATIVES: There are three alternatives for the City Council to consider: 1. Approve a resolution approving the Public Works Design Manual. 2. Deny this item for a specific reason and provide staff with direction. 3. Table this item until some date in the future. RECOMMENDED MOTION: Alternative number 1 Frank Boyles, City A RESOLUTION TO APPROVE THE PUBLIC WORKS DESIGN MANUAL Motion By: Second By: WHEREAS, The City Council approved resolutions 96-21 and 02-09 approving the Public Works Design Manual; and WHEREAS, This manual must be updated from time to time due to ordinance and technological revisions; and WHEREAS, The City Council will review the Public Works Design Manual periodically. NOW THEREFORE, BE IT HEREBY RESOLVED BY THE CITY COUNCIL OF PRIOR LAKE, MINNESOTA as follows: 1. The recitals set forth above are incorporated herein. 2. The Public Works Design Manual is hereby approved. PASSED AND ADOPTED THIS 16TH DAY OF JULY 2007. YES NO Hauaen Hauaen Erickson Erickson Hedbera Hedbera LeMair LeMair Millar Millar Frank Boyles, City Manager www.cityofpriorlake.com Phone 952.447.9800 / Fax 952.447.4245