Title
131st Street Lift Station Repairs - Board Approval
History
In late July, two of three pumps at the 131st Street Sanitary Sewer Lift Station failed. Both pumps were sent to Gasvoda & Associates, Inc. (GAI) of Calumet City, Illinois (the manufacturer’s authorized service representative) for evaluation. Both motors were found to be bad. Recent history at this lift station is a series of chronic motor failures. Staff worked in earnest with GAI in an effort to identify a reason for the recent motor failures with no clear cause identified. Following this effort, staff contacted Greeley and Hansen LLC (G&H) of Chicago, Illinois, to review the operation of the station in consultation with GAI and the Utility Division staff. During this review period, interim repairs were made to the motors by GAI at a total cost of $7,653.54. While the interim repair work was underway, Godwin Pump of Lansing, Illinois, was contracted to provide emergency pumping capability to prevent sanitary sewer backups (capacity was reduced by 2/3). The total cost for this service was $13,484.60.
After considerable review of the current operating characteristics of the station and discussion with GAI and the Utility Division staff, G&H has made several recommendations:
1. Replace existing motors as a result of excessive heat damage due to current operating conditions. (Existing motors have been rebuilt multiple times but can be maintained as spares.)
2. Replace existing Variable Frequency Drives (VFDs) due to reaching their expected lifespan. (The existing VFDs are fifteen (15) years old with a normal lifespan of ten (10) years.)
3. Replace existing controller to provide additional control flexibility and avoid operating conditions outside the manufacturer’s recommendations.
Item 1: Motor Replacement
GAI has provided a quote to replace three (3) motors. The cost of each motor is $7,363 for a total of $22,089. To ensure factory warranty, GAI will complete the installation with assistance from Utility Division staff for a cost not to exceed $7,119. Total cost of the motors and installation is $29,208.
Item 2: VFD Replacement
Two quotes have been obtained for the replacement of the three (3) VFDs. Wesco Distribution of Hammond, Indiana, has submitted a price of $18,000 and Meany, Inc. of East Hazel Crest, Illinois, has submitted a price of $18,461. Both quotes include installation.
Item 3: Controller Replacement
B&W Control Systems Integration of Crystal Lake, Illinois, has been coordinating and repairing the Village’s controls and SCADA (Supervisory Controls and Data Acquisition) system for the past several years. They are thoroughly familiar with the existing configuration and have submitted a proposal totaling $16,190 for the replacement of the current outdated controller.
On December 6, 2010, this item was reviewed and approved by the Public Works and Engineering Committee and referred to the Board for approval.
INFORMATION PREVIOUSLY PROVIDED AS PART OF THE DECEMBER 6, 2010, PUBLIC WORKS AND ENGINEERING COMMITTEE PACKET.
Financial Impact
Sufficient funds are available within the Contingency Fund (Account #031-6001-433.84-95) for the interim repairs and pump rental. Funds will need to be transferred from the Contingency Fund to Machinery and Equipment Repair ($7,653.54 - Account #031-6003-433.43-20) and $13,484.60 to Rental ($13,484.60 - Account #031-6003-433.44-50).
Funds are available in the Sanitary Sewer Capital Fund, Well Storage Facilities and Underground Sewer Lines ($63,398 - Account #031-6003-433.70-60 and #031-6003-433.70-50) for the replacement of the motors, VFDs and controller.
Recommended Action/Motion
I move to approve waiving the bid process;
And
Approve the payment for the interim motor repairs completed by Gasvoda & Associates, Inc. (GAI) of Calumet City, Illinois, at a cost not to exceed $7,653.54;
And
Approve the transfer of $7,653.54 from the Contingency Account to the Machinery and Equipment Repair Account;
And
Approve payment for the emergency pump rental from Godwin Pump of Lansing, Illinois, at a cost not to exceed $13,484.60;
And
Approve the transfer of $13,484.60 from the Contingency Account to the Rental Account;
And
Approve the purchase of three replacement motors from Gasvoda & Associates, Inc. (GAI) of Calumet City, Illinois, at a cost not to exceed $29,208;
And
Approve the purchase of three replacement VFDs from Wesco Distribution of Hammond, Indiana, at a cost not to exceed $18,000;
And
Approve the replacement of the existing controller by B&W Control System Integration of Crystal Lake, Illinois, at a cost not to exceed $16,190.
And
Approve authorizing the Village Manager to execute the proposals.