old village phase 5 and 6 improvements

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Old Village Phase 5 and 6 Improvements JULY 12, 2021 FOCUS ENGINEERING, inc. OLD VILLAGE PHASE 5 & 6 IMPROVEMENTS SANITARY SEWER SYSTEM REDESIGN

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Old Village Phase 5 and 6 Improvements

JULY 12, 2021 FOCUS ENGINEERING, inc.

OLD VILLAGE PHASE 5 & 6 IMPROVEMENTS

SANITARY SEWER SYSTEM REDESIGN

Old Village Phase 5 and 6 Improvements

JULY 12, 2021 FOCUS ENGINEERING, inc.

OLD VILLAGE PHASE 5 & 6 IMPROVEMENTS

Low Pressure System

Old Village Phase 5 and 6 Improvements

JULY 12, 2021 FOCUS ENGINEERING, inc.

Deep gravity sewer auger / jacking operation could not be constructed as designed.

– Cobbles and rocks prevent equipment from completing the work as proposed.

Review project impacts and direction moving forward.

PURPOSE OF MEETING

Old Village Phase 5 and 6 Improvements

JULY 12, 2021 FOCUS ENGINEERING, inc.

ORIGINAL DESIGN

Old Village Phase 5 and 6 Improvements

JULY 12, 2021 FOCUS ENGINEERING, inc.

The project team developed three alternative options to provide access to municipal sanitary sewer in the area.

a) Install a larger diameter tunnel that maintains the original design.

b) Install a public sanitary lift station at the city 201 system property alongside the proposed storm water basin. This allows for the remaining sanitary sewer pipe to be raised up in elevation and removes the deep gravity sewer from the project.

c) Reroute the trunk gravity sewer to extend north along Lambert Avenue from 32nd Street North, and install a low-pressure sewer system with individual grinder pumps at each property, extending west from Lampert Avenue along 32nd Street North.

RE-DESIGN EFFORTS

Old Village Phase 5 and 6 Improvements

JULY 12, 2021 FOCUS ENGINEERING, inc.

OPTION 2 – LIFT STATION

Old Village Phase 5 and 6 Improvements

JULY 12, 2021 FOCUS ENGINEERING, inc.

At the City Council meeting held July 6, 2021 the City Council provided direction to Staff to proceed with the lift station alternative to complete the project.

a) Sewer service to all properties remains unchanged.

b) No change to proposed assessments.

c) Project schedule - the contractor may proceed to begin street and utility work along 32nd Street. However, due to long lead and delivery times for lift station components, there will be a substantial delay in the new sewer being operational and ready for connection west of Lampert Avenue.

MOVING FORWARD

Old Village Phase 5 and 6 Improvements

JULY 12, 2021 FOCUS ENGINEERING, inc.

PROJECT STAGING – TO BE DETERMINED

POTENTIAL 2021 WORK AREA

Old Village Phase 5 and 6 Improvements

JULY 12, 2021 FOCUS ENGINEERING, inc.

QUESTIONS?