Design and Engineering Services Change Order Request Contract W40010E01 Design and Engineering Services 43rd Street Ditch and Jackson Park Restore ED’s Original Delegated Authority Commission Agenda Item #2
Updated KK River Watercourse Management Plan (KKRWMP) Recent changes to KKRWMP Separate Commission request in PF&P Committee updates this Plan and reflects these changes Requested change order results from these changes
KKRWMP Identifies 718 structures in floodplain on jurisdictional streams 15 different project areas 6 project areas currently in progress, including: 43rd Street Ditch Jackson Park Recent changes to Jackson Park and 43rd St. Ditch Result from discussions with Milwaukee County, recent land purchase, and preliminary engineering work
Existing Jackson Park and 43rd St. Ditch Elements Lincoln Ave Existing Jackson Park and 43rd St. Ditch Elements Increase Culvert Capacity Naturalize Stream 43rd St. Ditch Jackson Park Naturalize Stream 43rd St Lower Parkland & Lagoon Increase Bridge Capacity
Updated Jackson Park and 43rd St. Ditch Elements Increase Culvert Capacity Naturalize Stream New Culverts 43rd St. Ditch Jackson Park New flood storage Basin 43rd St Naturalize Stream Increase Bridge Capacity Smaller JP storage, storage in Lagoon & Dion-Simon
Jackson Park and 43rd Street Ditch Change Summary Element Existing Plan Updated Plan Flood storage Large footprint of Jackson Park lowered Reduced footprint of Jackson Park lowered Lagoon dredged and lowered Storage in We Energies/ Dion-Simon properties Conveyance System New conveyance system to and from We Energies storage facility Channel improvements Naturalize: KK River Channel through Jackson Park & 43rd St. Ditch south of Lincoln Bridge Flow Capacity Increase 43rd St. bridge capacity Increase 43rd St. Bridge capacity Culvert Capacity Increase capacity of S. 43rd street, W. Lincoln Ave, Union Pacific RR culverts Increased capacity of W. Lincoln Ave. culvert
Contract W40010E01 District contracted with HNTB in July 2017 Perform preliminary engineering for both Jackson Park & 43rd St. Ditch For Jackson Park only: Design services/develop bid documents Bid & Award services Engineering Services During Construction
Contract W40010E01 As presented, multiple changes occurred during preliminary engineering phase, resulting in need for increased preliminary engineering scope and $ Changes summarized as follows
Remove Master Plan Original contract scope included development of Master Plan for Jackson Park Milwaukee County Parks requested District not to perform this scope County Parks requests District only develop park improvements for areas affected by flood management (if funded by the District) Park improvements identified in project will be outlined in future ICA
New Flood Storage Areas Preliminary engineering for the 2 new flood storage areas Preliminary engineering for the 2 additional conveyance systems to the new flood storage areas. Additional geotechnical and environmental soil borings associated with these areas Following completion of PE, District will evaluate if changes needed for final design tasks
New Flood Storage Areas New Culverts S. 43rd St.
Contract Schedule/Budget CO will extend schedule to reflect new construction bid date in summer 2021 No change in budget needed at this time
Restore ED Authority ED authority $200,000 ED utilized all authority Request to restore ED’s authority in case any other additional services of minor nature are needed
QUESTIONS? No need in this case to re-state the request.