Peralta Community College District Sealed Solicitation
Title: iBid No. 20-21/01 College of Alameda Aviation Sewer Pump Replacement Project
Deadline: 3/9/2021 2:00 PM (UTC-08:00) Pacific Time (US & Canada)
Status: In Review
Solicitation Number: iBid No. 20-21/01
Description: The Project consists of all labor, materials equipment and services necessary to replace the existing failed sewage pump with a new Lift station located at 970 Harbor Bay Parkway, Oakland, CA 94621. The project is estimated at $175,000.
Pre-Bid Meeting Details: There is no pre-bid meeting. Site visit available upon request.
Documents:
Addition 1
Posted: 2/24/2021
Type of Addition: Addendum One
Overview:
Addendum One contains:
The video conference location for the bid opening via Zoom meeting.
Deadline: 3/4/2021 2:00 PM
Solicitation #: i20-21/01
Documents:
Addition 2
Posted: 3/3/2021
Type of Addition: Addendum Two
Overview: Addendum Two extends the bid due date until March 9th and adds scope to the project.
Deadline: 3/9/2021 2:00 PM
Solicitation #: i20-21/01
Documents:
Addition 3
Posted: 3/10/2021
Type of Addition: In Review
Question 1
Posted: 2/24/2021
Question: Are the Equipment Specification Cut Sheets the only technical specs for this project? Has this equipment been pre-purchased? I'm trying to determine what is needed - simplex? duplex? What is the required flow for the pump?
Response: - Are the Equipment Specification Cut Sheets the only technical specs for this project? Yes, the specifications provided are for a direct replacement of the sewer pump, lift station and electrical control panel. - Has this equipment been pre-purchased? No, the project was previously assessed by the investigating vendor but nothing was purchased. - I'm trying to determine what is needed - simplex? duplex? 2 simplex pumps (one with the float set to primary level and the second set to overflow level incase pump 1 goes out) - What is the required flow for the pump? The flow rate is to be determined by fixture unit quantity, rise, and discharge pipe length. Here is an equivalent sewer pump from Gould (model # WS2034D4) with the flow rate noted below. • HP2 • Rated Voltage460V AC • Phase - Pumps3 • Amps5.80 • Motor Type3-Phase • Body MaterialCast Iron • Impeller MaterialCast Iron • Shaft Seal Material - PumpsSilicone Carbide • Switch ActuationNo Switch Included • Switch Electrical ConnectionNo Switch Included • On PointN/A • Off PointN/A • Flow Rate @ 15 Ft. of Head375.0 gpm
Question 2
Posted: 2/25/2021
Question: Please clarify. Your 2/25 response shows " 2 simplex pumps (one with the float set to primary level and the second set to overflow level incase pump 1 goes out)" Are you wanting two (2) simplex (single pump) lift stations? Or are you wanting one (1) duplex lift station (one station with two pumps)?
Response: (1) lift station with (2) pumps in it.
Posted: 2/24/2021
Type of Addition: Addendum One
Overview:
Addendum One contains:
- The video conference location for the bid opening via Zoom meeting.
Deadline: 3/4/2021 2:00 PM
Solicitation #: i20-21/01
Documents:
Posted: 3/3/2021
Type of Addition: Addendum Two
Overview: Addendum Two extends the bid due date until March 9th and adds scope to the project.
Deadline: 3/9/2021 2:00 PM
Solicitation #: i20-21/01
Documents:
Posted: 3/10/2021
Type of Addition: In Review
Posted: 2/24/2021
Question: Are the Equipment Specification Cut Sheets the only technical specs for this project? Has this equipment been pre-purchased? I'm trying to determine what is needed - simplex? duplex? What is the required flow for the pump?
Response: - Are the Equipment Specification Cut Sheets the only technical specs for this project? Yes, the specifications provided are for a direct replacement of the sewer pump, lift station and electrical control panel. - Has this equipment been pre-purchased? No, the project was previously assessed by the investigating vendor but nothing was purchased. - I'm trying to determine what is needed - simplex? duplex? 2 simplex pumps (one with the float set to primary level and the second set to overflow level incase pump 1 goes out) - What is the required flow for the pump? The flow rate is to be determined by fixture unit quantity, rise, and discharge pipe length. Here is an equivalent sewer pump from Gould (model # WS2034D4) with the flow rate noted below. • HP2 • Rated Voltage460V AC • Phase - Pumps3 • Amps5.80 • Motor Type3-Phase • Body MaterialCast Iron • Impeller MaterialCast Iron • Shaft Seal Material - PumpsSilicone Carbide • Switch ActuationNo Switch Included • Switch Electrical ConnectionNo Switch Included • On PointN/A • Off PointN/A • Flow Rate @ 15 Ft. of Head375.0 gpm
Posted: 2/25/2021
Question: Please clarify. Your 2/25 response shows " 2 simplex pumps (one with the float set to primary level and the second set to overflow level incase pump 1 goes out)" Are you wanting two (2) simplex (single pump) lift stations? Or are you wanting one (1) duplex lift station (one station with two pumps)?
Response: (1) lift station with (2) pumps in it.