PO Rec/Sup 2013 - Laserfiche WebLink

Home Browse Search

CONTRACT SCHEDULE A TECHNICAL REQUIREMENTS & DELIVERABLES River Valley Land Surveying, LLC shall follow the methods and standards outlined in the bid submitted by said vendor and all deliverables shall be created and submitted as specified in Dane County RFP #113105 and incorporated herein by reference. The PLSS corners to be included for the purposes of this contract are specified in said RFP and Final Cost Proposal including 180 corners. All coordinate values shall be collected and expressed in the North American Datum (NAD) of 1983 - National Spatial Reference System 2011 (NSRS 2011), Dane County Coordinates. NAD 83 (NSRS 2011) DANE COUNTY. Coordinates shall be expressed to the nearest 0.01 feet. The vendor will be required to supply a redundant coordinate value for each corner in the collected data and include the averaged coordinate on the monument record to be filed. The vendor shall also provide an Orthometric Height for any monuments in an area accessible for a direct GPS observation. Orthometric Heights shall be expressed to the nearest 0.01 feet and referenced to the North Arnerican Vertical Datum of 1988 (NAVD 88). The vendor will be required to perform all necessary survey records research to perpetuate PLSS corners. In the event that evidence suggests an alternative location for an existing perpetuated corner location, the evidence shall be presented to the County Surveyor for evaluation and consideration of the alternative location. Ultimately, the vendor is responsible for verifying and supporting the corner location they specify on their Monument Record. The same shall apply for any PLSS corner location with multiple monument locations. Monuments when found and stable, shall not be disturbed and may remain as the section corner monument. Any monument not found will be replaced or perpetuated with a Dane County Section Corner monument. Available monuments are a "dig -in" 2 inch inside diameter stainless steel pipe, 30 inches in length with a pinned on naval bronze cap and a flared bottom, a heavy gauge 8 inch survey marker spike with a Dane County PLSS Corner washer, or a 3-1/2 inch bronze stem for setting in a concrete pad or tube. Where feasible "dig -in" monuments will be used for the section corner itself. The top of the monument shall be set approximately 2 inches above grade. Every corner shall also have 4 accessory or witness monuments. Witness Page 9 of 11