AR 032106 Merlin Johnson - Laserfiche WebLink

Browse Search

CITY OF COLTON AGENDA REPORT FOR THE COLTON UTILITY AUTHORITY MEETING OF MARCH 21, 2006 TO: HONORABLE CHAIRPERSON AND UTILITY AUTHORITY MEMBERS FROM: ERIC R. FRASER, DIRECTOR OF WATER & WASTEWATER OPERATIONS SUBJECT: AMEND THE MERLIN JOHNSON CONTRACTS IN THE AMOUNT OF $26,000 FOR MT. VERNON (BETWEEN CHANNEL AND OLIVE) AND $17,000 FOR E. LAUREL STREET (BETWEEN BORDWELL AND MT. VERNON) FOR ADDITIONAL PIPELINE INSTALLATION SERVICES. DATE: MARCH 13, 2006 BACKGROUND: The City of Colton has old steel water mains that are over 50 years old. The old steel pipes are corroded and rusty causing leaks and discolored water to our customers. To correct the problem of the discolored water and leaks in the old steel pipes, a Mainline Replacement Program was implemented to replace the old steel pipes. The City's Water Division has replaced 26,000 feet of old steel pipe with Polyvinyl Chloride (PVC) pipe as well as adding new fire hydrants and appurtenances to the affected residents. DISCUSSION/ANALYSIS: Merlin Johnson was awarded contracts for labor and equipment rental only in the amount of $24,500 to replace the old 10" steel water line on E. Laurel Street between Bordwell and Mt. Vernon and the old steel 6" waterline on Mt. Vernon between the Lytle Creek Channel and Olive Street with 12" C-900 PVC pipe. The new waterline installation on E. Laurel Street is complete and the new waterline on Mt. Vernon will be installed and completed by March 16, 2006. The contracts for E. Laurel and Mt. Vernon have exceeded the $24,500 due to the extra work done on locating the unmarked utilities and soils being very sandy. Due to the soil conditions it has made it difficult to trench large sections at a time and the 12" C-900 PVC pipe is larger in diameter and heavier than the 8" C-900 PVC pipe installed in other pipeline replacement areas of the City. Also, the 12" C900 PVC Pipe requires more mechanical equipment to install. Merlin Johnson has been able to install an average of 400 feet of 8" PVC pipe a day. They are only able to install approximately 200 feet per day of the 12" C-900 PVC pipe; therefore, instead of 6 days or less per watermain replacement project, it took 11 days to complete E. Laurel Street and will take approximately 12 days for Mt. Vernon. The additional labor and equipment rental for E. Laurel Street will cost approximately $17,000 and for Mt. Vernon approximately $26,000 FINANCIAL IMPACT: Sufficient funds are available in the Capital Improvement Main Line Replacement Accounts 521- 8111-8106-3890-0000-000 and 521-8117-8106-3890. 7/10/03 City Clerk's office Cb ITEM #16