2024-013 - Laserfiche WebLink

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Also, the COUNTY desires to pave 12th Street SW and 13'h Street SW between 91h Court SW and 17th Avenue SW. The total length of unpaved roadways to be paved is approximately 4.5 miles. The Oslo Park drainage area to be analyzed consists of approximately 0. 16 square miles confined between 91h Court SW to the east and 17th Avenue SW to the west, and between 11th Street SW to the north and IRFWCD Sub -Lateral Canal B-8 to the south. The existing Oslo Park drainage system utilizes approximately 4.5 miles of roadside swales and approximately 3 miles of rear lot swales to drain the subdivision from north to south and thence discharge via culverts under 13th Street SW to IRFWCD Sub -Lateral Canal B-8. CAI will require access to all areas within Oslo Park to conduct our investigation. We anticipate additional drainage connections to IRFWCD Sub -Lateral Canal B-8 will be necessary to accommodate the increase in stormwater runoff resulting from an increase in impervious area due to the proposed paving. SECTION II — SCOPE OF SERVICES CAI agrees to perform professional engineering and related services in connection with the project as required and as set forth in the following: Phase One: Following issuance of a Notice to Proceed (NTP), CAI will coordinate a kick-off meeting with COUNTY staff to discuss specific issues relative to the project and to verify scope and design parameters. Phase One will be completed within 6 months of NTP. A. Survey: CAI will provide a full topographic and boundary survey of the existing right- of-way, including roadways, driveways, mailboxes, trees, vegetation, drainage system and all above ground obstacles. The survey will also include the rear lot swale system, IRFWCD Sub -Lateral B-8 Canal, and aboveground/underground utility locations. CAI will coordinate directly with utility providers to obtain information relative to the location of underground utilities. The survey drawings will be utilized as base drawings for engineering design. Field Survey Crew Tasks • Review survey objective and scope of project with field crew. • Research subdivision control, plats, surveys, county provided survey information, benchmarks, etc. Prepare field crew field file, work sheets and maps for survey observations. • Establish horizontal site control for project control and boundary reconnaissance. • Establish vertical control for ground control points/aerial targets and site-specific topographic survey. Page 2 of 6