Irwin Rehabilitation Improvements

The Project consists of work in multiple process areas as follows: 1. Replacement of the roof and HVAC equipment at the Administration building. 2. Modifications to the existing grit removal chamber at the flow equalization facilities to include a 7-foot Parshall flume. 3. Spot concrete, sealant, and pavement repairs at the flow equalization facilities. 4. Installation of a third mechanical bar screen in the existing Influent Pump Station. The new mechanical screen is pre-purchased by the Owner. The Contractor will administer submittals and handle receipt, installation, startup, testing, and commissioning. 5. Installation of a new eductor system on all the Influent pumps to automatically vent the pump casings. 6. Modifications to the 18-inch discharge piping of two influent pumps. 7. Installation of a new process analyzer (Chemscan) near the Aeration Basins. The analyzer equipment, FRP enclosure, and sample pumps are pre-purchased by the Owner. The Contractor will administer submittals and handle receipt, installation, startup, testing, and commissioning. 8. Modifications to the plant’s effluent piping (42 and 30 inches in diameter) including replacement of a flowmeter vault with a new vault. The new meter will be provided by the Owner. This work will require bypass pumping. 9. Replacement of the roof and select HVAC equipment at the Old Chlorine Building (Additive Alternate 1). Pre-Bid Meeting: Pre-Bid Meeting on 4/15/2021 at 10:30 AM via Webex. Call one of the following numbers: 1-650-479-3207 Call-in number (US/Canada) 1-855-244-8681 Call-in toll-free number (US/Canada) Following access code: 160 247 0550, The Password is 4ewRaPbh8j6 Or Click the following link: https://charlotte.webex.com/charlotte/j.php?MTID=m31816edacbf8d5dc84cb79a57bb76674. Attendance Highly Encouraged.

Division 07 -	Thermal and Moisture Protection, Dampproofing and Waterproofing, Thermal Protection.
Division 23 -	Heating, Ventilating, and Air Conditioning (HVAC), Instrumentation and Control for HVAC, HVAC Air Distribution, Central HVAC Equipment.