2007/08/29 Council Agenda Packet

SURVEYING AND MAPPING This task will provide design surveying and mapping (topographic surveys) needed to perform the preliminary design of the preferred lift station alternative. Perteet, Inc., will provide surveying services to include the following: ASSUMPTIONS: 1. For the purpose of developing this scope of work, the limits of survey are assumed to be the existing lift station site, and a "mirror image" site on the property to the south and adjacent right-of-ways, including the interurban trail. 2. It will not be necessary to enter private residences or buildings to survey basements or obtain other information. . 3. The mapping will comply with the National Map Accuracy Standards for 1 inch=20 feet scale mapping. Digital files shall also be in AutoCAD 2006 with the City of Everett layering conventions, standard symbols, and attributes as described in the latest revision of the"Surveying and CAD Standards for the City of Everett". Digital files shall be two- dimensional with individual line segments connecting points. Point blocks with number identifier, elevation and description fields will also be included. Digital files will be contiguous for each project and at a one-to-one scale in model space. 4. Utility location service prior to the site survey will be requested by MSA and conducted by City forces and the other utility owners, as necessary. 5. Control monument selection and survey methodology to be used shall be coordinated with and approved by the City prior to beginning the control survey. All survey control work shall be recorded in a City-supplied field book. Establishment of new control monuments shall conform to the"Surveying and CAD Standards for the City of Everett". CITY RESPONSIBILITIES: 1. Provide monument location index and blank survey field books. 2. Provide property reports, plats, right-of-way maps and other legal documents that would depict property lines,easements and other boundary locations. 3. Review electronic copy of basemap for compliance with City CAD standards and provide written comments. 4. Provide current Title Reports for Lot 31, Silver Lake Acres No. 2 from which to calculate property boundary. 5. Obtain right of entry to private property(Lot 31). 6. Perform confined space entry to manholes or vaults if necessary to obtain survey data or measurements. PERTEET RESPONSIBILITIES: 1. Coordinate survey data collection formats to be compatible with the City's GIS database. 2. Tie all survey work and coordinate systems for the site into the City's mapping coordinate system(NAD 83/91)using at least two monuments for the project 3. Horizontal control (NAD 83/91) and vertical control (NAND 88) shall be established from the nearest approved City control monument for the project site.