Change Order No 1 - Mishawaka Avenue Roto Rooter Jetter Removal Proj No 118-069R - Selge Construction Co Inc

Home Browse Search

INTER -OFFICE MEMORANDUM DEPARTMENT OF PUBLIC WORKS DIVISION OF ENGINEERING TO: Linda M. Martin, Clerk Board of Public Works FROM: Sue Ellen Doudrick SUBJECT: Division 2 Change Order for Project No. 118-069 exceeding 20% Project Name: Mishawaka Avenue — Rota Rooter Jetter Removal DATE: September 5, 2018 This project had two Divisions; Division 1: Mishawaka Avenue and Division 2: North Shore Drive. Unfortunately, the project title is a bit misleading for the entire scope of work. This memo was prepared for Division 2: North Shore Drive only. Division 2 work is completed. The scope of work included: removal and replacement of eight (8) catch basins and inlets on North Shore Drive (between Michigan and Niles Avenue). During construction, unforeseen issues arose. The Contractor, Selge Construction, performed necessary additional work on the North Shore Drive (Division 2) Project ##118-069R which added $19,507.00 (36.95%) to the original project ($52,800.00). Total cost is now $72,307.00. Description of work: When the Contractor opened up two (2) of the eight (8) catch basin (CB) structures and began the removal process, damaged or blocked storm leads were discovered. The Contractor notified the Construction Inspector and an investigation by the City's Sewer Department was required at one location to pinpoint the issue. A description of the two locations where additional work was required are as follows: 9. SE Corner of Michigan & North Shore Drive. Installing new storm sewer pipe from the CB to storm manhole located between Leeper Avenue and Michigan on North Shore Drive. The existing lead pipe had a sandy debris blockage several feet into the lead pipe. This blockage created backups within the CB which lead to excessive puddling at the intersection's southeast corner during rain events. This new pipe installation will alleviate the flooding issue and was an opportunity for creating a storm separation from the combined sewer along North Shore. Alternative relocation of lead presented major utility conflicts or trenching across Michigan and North Shore Drive. 2. NW Corner of Niles Avenue & North Shore Drive. Installing new storm sewer pipe from the CB to the nearest manhole in Niles and North Shore. The existing pipe was clogged with concrete debris and soils, and one of the joints was offset. These issues create puddling at the northwest corner and sent excess water to CBS farther downhill. This new pipe installation will alleviate flooding and provide additional capacity and hydraulic efficiencies. Notice pictures below of debris found within CB and within lead pipe.