BID 2025-29 Clarifying Questions 2.pdf
PDF 151 KB Posted
- Solicitation number
- S-C01010-00013358
- Issued by
- Clackamas County, Oregon
About this file
This document is a Response to Clarifying Questions #2 for Invitation to Bid #2025-29 by Clackamas County for the Three Creeks Floodplain Enhancement Project. The document addresses six specific questions from potential bidders regarding project details, including fish relocation responsibilities, high visibility fence usage, creek flow rates, erosion control permitting, soil preparation and amendment processes, and herbaceous plant specifications. Key clarifications include the contractor being responsible for fish relocation, the high visibility fence being used for 3,404 linear feet of sensitive area protection, and the project having automatic coverage under a 1200-CA permit due to its public entity status and disturbance of less than 5 acres.
The document provides technical specifics about the project's environmental management, such as flow rate data for Mt Scott Creek from water years 2022-2024, which ranges between 0.77-19.7 cubic feet per second. The county aims to eliminate topsoil importation by salvaging and blending existing topsoil with compost, and specifies herbaceous plants as 10-cubic-inch conical container plugs selected to ensure high survival rates and ease of installation. The clarification document suggests the project involves ecological restoration and floodplain enhancement, with careful attention to environmental preservation and precise technical specifications for vegetation and site management.
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INVITATION TO BID #2025-29
Three Creeks Floodplain Enhancement Project
(“BID”)
RESPONSE TO CLARIFYING QUESTIONS #2
April 24, 2025
Note that these are questions submitted by interested firms to the above referenced solicitation.
The below answers are for clarification purposes only and in no way alter or amend the BID as published.
1. Is the contractor expected to provide fish relocation for this project? The specifications state that a Qualified agency, ODFW or consultant biologists will remove them and to coordinate removal with the engineer. If the contractor is not responsible for the fish removal, what are bid items 11 (Fish Salvage) and 12 (Permit for Fish Salvage) supposed to pay for?
Answer: The specs are incorrect; the contractor is expected to provide fish relocation.
See Addendum #2 for updated specification 00245.40.
2. What is the bid item 20, high visibility fence, used for? We can’t find it on the plans or in the specifications.
Answer: The 3,404 linear feet of High Visibility Fence accounts for sensitive areas to be flagged in the field as needed, including the temporary in-stream access length, tree protection, and temporary access within oak habitat. This is outside of areas protected by High Visibility Sediment Fence, which is shown on the plans but missing from the specs.
We will add a special provision for the High Visibility Sediment Fence. Please see Addendum #2.
3. I asked the question at the pre-bid about the flow rate of the creek. In order to size the pump/pipe correctly for the temporary stream diversion, I need to know the flow rate of the water.
Answer: WES has a flow monitoring gauge in Mt Scott Creek downstream of the site at Hwy 224. This location is just below the confluence of Minthorn Springs on the creek so there’s likely a small, but measurable proportion of flow from those springs reflected in the gauge discharge values. See below for the minimum, maximum, and mean daily flows between July and Sept for the past three water years:
• WY 2022: Range; 0.77 – 10.9 cfs: 3-month mean; 2.14 cfs
• WY 2023: Range; 1.1 – 19.7 cfs. 3-month mean; 2.19 cfs
• WY 2024: Range, 1.1 – 17 cfs. 3-month mean; 2.58 cfs
4. Is the contractor responsible for obtaining an erosion control permit? Would the County be able to acquire the 1200CN permit for the project? If this waits for the contractor to acquire once under contract, it is highly unlikely that the work will be able to occur during this years in-water work window due to the long lead time for this permit.
Answer: This project has automatic coverage from a 1200-CA permit, available at https://www.oregon.gov/deq/wq/Documents/1200-CA-Permit.pdf. Because the project is being done under the jurisdiction of WES, a public entity, and it will disturb less than 5 acres, the project can receive coverage under this permit. Contractor must comply with all the conditions listed in the permit, but does not need to apply for their own permit.
The 1200-CA permit has also been added to the public “3Creeks Permits” Dropbox folder at https://www.dropbox.com/scl/fi/pfoh7k4htvxmw9vbx1ya7/1200-CA- Permit.pdf?rlkey=8v1kxbmfwyxf7ec0vfgfd8la6&st=fyq11h7x&dl=0.
5. Can you please specify what labor/material should be included in each of these items (Topsoil
(24) Soil Preparation (30) & Soil Amendment (31)) on the bid/fee sheet.
Answer: Our goal was to eliminate the need for importing topsoil. Salvaged topsoil will be blended (Soil Preparation – Section 30) with compost (Soil Amendment –31). This mixture will then be placed in the designated planting areas (SP-30).
6. Can you please confirm what size the herbaceous plants supposed to be in inches/gallons?
Answer: Herbaceous plants labeled as 10 CI indicate a 10-cubic-inch conical container;
these are plugs. This specific container size was chosen to ensure high survival rates, promote rapid establishment, and facilitate ease of installation.
End of Clarifying Questions #2 https://www.oregon.gov/deq/wq/Documents/1200-CA-Permit.pdf https://www.dropbox.com/scl/fi/pfoh7k4htvxmw9vbx1ya7/1200-CA-Permit.pdf?rlkey=8v1kxbmfwyxf7ec0vfgfd8la6&st=fyq11h7x&dl=0 https://www.dropbox.com/scl/fi/pfoh7k4htvxmw9vbx1ya7/1200-CA-Permit.pdf?rlkey=8v1kxbmfwyxf7ec0vfgfd8la6&st=fyq11h7x&dl=0
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