Consider motion to approve Change Order #4 increasing the contract amount by $80,738.06 to Concrete Technologies, Inc., for construction services on the NW Irvinedale Drive and NW 5th Street Intersection Improvements project. 

A) Item C4.1: The locations of a sewer and water service were misidentified through the Iowa One-Call process.  This resulted in the reinstallation and lowering of 40 feet of 24" water main in order to avoid the conflict.

B) Items C4.2 & C4.3: Temporary traffic control signage and temporary pavement markings were installed in order to have NW Irvinedale Dr. open to traffic during the winter months.

C) Item C4.4: Luminaires and associated temporary overhead electric lines were installed in order to illuminate the NW Irvinedale Dr. & NW 5th St. intersection during the winter months. 

D) Items 4.5 & 4.6: Hot water was used for PCC paving in colder temperatures, and the new PCC pavement was covered with blankets for cold weather protection.

E) Item 4.7: Temporary driveway pavement was constructed in order to provide access to several residential properties during the winter months. 

The cost information for each item is shown on the attached change order form.