BID 2022-106 Addendum 2 rev1.pdf
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- Attached to
- BID 2022-106 Fischers Forest Park - Large Onsite Sewage System Treatment Process Upgrade
- Solicitation number
- S-C01010-00005288
- Issued by
- Clackamas County, Oregon
About this file
This document is an Addendum to the Invitation to Bid (ITB) #2022-106 for the Fischer's Forest Park: Large Onsite Sewage System Treatment Process Upgrade project. The project is being conducted by Clackamas County, Oregon. This addendum revises the project specifications, specifically regarding the installation of drip tubing into the native soil using a drip tube laying machine. The addendum emphasizes the importance of protecting and maintaining the integrity of the native soil, and prohibits any substitutions or deviations that could compromise the soil structure. The addendum also provides guidance for addressing potential installation challenges during drier summer months.
The related state and local contract opportunity involves the Fischer's Forest Park: Large Onsite Sewage System Treatment Process Upgrade project, which is being conducted by Clackamas County and the city of Oregon City, Oregon. No additional details on pricing terms, set asides, incumbents, funding requirements, or other salient information are provided in the document.
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Text version
INVITATION TO BID #2022-106
FISCHER’S FOREST PARK:
LARGE ONSITE SEWAGE SYSTEM TREATMENT PROCESS UPGRADE
ADDENDUM NUMBER 2
January 30, 2023
On December 28, 2022, Clackamas County (“County”) published Invitation to Bid #2022-106 (“BID”). The County has found that it is in its interest to amend the BID through the issuance of this Addendum #2. Except as expressly amended below, all other terms and conditions of the original BID and subsequent Addenda shall remain unchanged.
A. PROJECT SPECIFICATIONS
1. Revised Plans and Specifications: Large Onsite Sewage System Upgrade by Valley Science and Engineering
a. Section 5.11: Workmanship
1) Add the following paragraph to the section:
Drip tubing is to be installed into the native soil using a drip tube laying machine that is compatible with the tubing specified in the bid package documents. No importation of cover material is anticipated. Protecting and maintaining the integrity of the native soil is critical to the proposed treatment design and no substitutions or deviations will be allowed, including surface scarification or tilling as that will compromise the soil structure intended to receive treated effluent. If installation is delayed until drier summer months, hardened soils may make installation in one pass difficult due to tube laying shank refusal/increased resistance. For this scenario, previous installation in substantially similar soils have successfully installed drip tubing by making a first pass of a tractor mounted tube laying machine without tubing and shanks set to 75% of target burial depth. A second pass with tubing is then made and the resistance is adequately reduced from the first pass.
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