Addendum 1.pdf

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Attached to
High/Middle School Sanitary Treatment Modification Project
Solicitation number
48773
Issued by
Northumberland County, Virginia

About this file

This document is Addendum No. 1 for the Northumberland County High/Middle School Sanitary Treatment Modification Project, prepared by Mangrum Consulting & Design on behalf of Northumberland County, Virginia. The addendum makes changes to the project drawings and project manual, including clarifying that the precast tanks do not require H20 loading, providing details on the frequency of data collection for flow meters and level data, and moving the bid date from January 11, 2024 to January 18, 2024 with bids to be delivered to the Old Courthouse Complex in Heathsville, VA.

The original project scope involves furnishing and installing five 9,000-gallon precast concrete septic tank structures, submersible pumps, precast valve vaults, two flow meters, a modulating control valve, approximately 2,500 linear feet of 2-inch HDPE force main, associated electrical and controls, and a 2,500-linear-foot run of fiber cable connecting two locations - the High/Middle School and the Elementary School.

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Addendum No.1 for the

Northumberland County High/Middle School Sanitary Treatment Modification Project

Prepared For Northumberland County

72 Monument Place Heathsville, VA 22473

Prepared by C. Robert L. Mangrum, P.E., BCEE

Mangrum Consulting & Design

1500 Clayton Avenue

Lynchburg, VA 24503

Addendum Date: January 9, 2024

This Addendum No. 1, dated January 9, 2024 amends or supplements the Contract Documents titled Northumberland County High/Middle School Sanitary Treatment Modification Project Dated November 14, 2023 as indicated below:

Changes to Drawings:

Item 1: See Questions and Responses.

Changes to Project Manual:

Item 1: See Questions and Responses.

Questions & Responses:

Question 1: The drawings require all the precast tanks to be H20 Loading, is this correct ?

Response 1: The precast tanks DO NOT require H20 Loading.

Question 2: On drawing E-001 in the process control narrative it is stated that the PLC shall store certain data for 90 days. I need to know at what interval this data needs to be collected I.E. every hour, once a day, second by second.

Response 2: Flow meter data to be collected every 15 seconds; Level data to be collected every 15 minutes.

Question 3: Can the bid date be moved ?

Response 3: Yes, this addendum moves the bid date from Jan 11, 2024 at 2:00 PM to January 18, 2024 at 2:00 PM. Please note the address for delivery of bids (and opening) is: Old Courthouse Complex located at 72 Monument Place, Heathsville VA 22473.

Attachments None.

END OF ADDENDUM NO. 1

END OF ADDENDUM NO. 1

File details come from the government source that posted it. Updated .