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CONTRACT SCHEDULE A TECHNICAL REQUIREMENTS & DELIVERABLES PROVIDER shall follow the methods and standards outlined in the proposal submitted by said vendor and incorporated herein by reference. The PLSS corners to be included for the purposes of this contract are indicated on the master contract map in green as shown in the legend. Said map is attached hereto. 110 corners are included. If the county receives a new Monument Report with coordinate information prior to vendor commencing work for said corner, it may be removed from the contract at the County Surveyor's discretion. All coordinate values shall be collected and expressed in the North American Datum (NAD) of 1983 - National Spatial Reference System 2007 (NSRS 2007), Dane County Coordinates. NAD 83 (NSRS 2007) DANE COUNTY. Coordinates shall be expressed to the nearest 0.001 feet. PROVIDER will be required to supply a redundant coordinate value for each corner. PROVIDER 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 American Vertical Datum of 1988 (NAVD 88). PROVIDER 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, PROVIDER 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 monuments may consist of % inch diameter rebar, 24 inches in length or the Page 9 of 11