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Work Order No. 52 <br />431d Avenue Pedestrian & <br />Bicycle Improvement Project <br />1. Establishment of a project wide Horizontal Control Network within the PROJECT LIMITS. <br />A Design Survey Baseline will be established and monumented. A minimum of three <br />Design Survey Baseline monuments will be installed. <br />2. Establishment of a project wide Vertical Control Network within the PROJECT LIMITS. All <br />elevations will be referenced to NAVD 1988 datum. <br />The limits of the topographic design survey are as follows: <br />43rd Avenue - between 12th Street and 18th Street, approximately 4,000 linear feet. <br />Topographic survey shall extend no less than 15 feet beyond the right-of- <br />way. <br />B. Geotechnical Investigation: <br />The Consultant will retain the services of a Geotechnical sub -consultant to assist in <br />evaluating the existing soil and roadway pavement conditions. The Geotechnical sub - <br />consultant will provide the following Geotechnical Services: <br />1. Field Exploration Program <br />• Six (6) pavement cores along the shoulder alternating sides <br />• Ten (10) 6 -feet deep hand augers alternating side of the roadway <br />2. Engineering Analysis and Report <br />The Geotechnical Sub -Consultant Engineer shall perform analysis of all the data obtained to <br />evaluate subsurface conditions and develop engineering recommendations to guide site <br />preparation procedures and foundation support. <br />C. Construction Documents: <br />The Construction plan set shall consist of the following: <br />Page 2 of 9 <br />