Questions and Answers Skillem Rd Decon.pdf
PDF 193 KB Posted
- Attached to
- GNA SKILLEM ROAD DECOMMISSIONING
- Solicitation number
- S-63500-00014383
- Issued by
- Douglas County, Oregon
About this file
This document is a set of questions and answers for the Oregon Department of Fish and Wildlife (ODFW) "GNA Skillem Road Decommissioning" project, solicited through Oregon Buys #S-63500-00014136, with an estimated project cost of $80,000.00. The project involves road decommissioning and stream crossing work, including culvert removal, boulder weir construction, and site restoration. Key project specifications include using 15ft and 24ft boulders, 12in gravel from a USFS mink rock pit, and constructing boulder weirs at specific mile posts. The project requires careful grade control, equipment-width clearing, and specific rock placement techniques.
The project involves several detailed technical requirements, such as achieving a 1 to 1.5 grade during culvert removal, measuring culvert depths, and managing excavated materials. Additional specifications include seed spreading at 15lbs per acre (provided by USFS/ODFW), contractor responsibility for metal culvert removal, and potential use of excavated rock in weirs and slopes. Water sources for the project are specified at 3C Rock day use area and the 28-353 road, with restrictions on water collection. The bidding process includes optional line items at specific mile posts, and the project emphasizes environmental considerations such as soil disturbance mitigation and potential straw coverage for seeded areas.
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Other files
| File | Type | Posted |
|---|---|---|
| 408-24 ITB GNA Skillem Road Decommissioning.pdf | ||
| Notice of Intent to Award GNA Skillem Road Decom.pdf | ||
| Fruit Variety Canned~1.docx | DOCX document | |
| Skillem Road Decon Bid Tally Sheet.pdf |
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Text version
Questions from ODFW’s “GNA Skillem Road Decommissioning - Oregon Buys #S- 63500- 00014136”
Estimated Project Cost: $80,000.00
Question: What class of rock needs to be used in this project?
15ft and 24ft boulders need to used and 12in gravel will be used. Material is provided from USFS mink rock pit.
At Mile Post 0.14 a 20cy boulder will be used.
Clari�ication: At MP 0.14 the Optional Bid item is in addition to the two boulder weirs in the third bullet.
Big Culvert MP 0.41
- The goal of the removal and repair is to achieve a 1 to 1.5 grade. If this cannot be achieved the Awarded Contractor will need to submit a Change Order Request.
- Depth of culvert is measured bottom of pipe. Depth at inlet is 10ft. and 17’ at outlet of pipe.
- Grade to channel bottom
- There is no engineered plan for grade control or rock placement
Clearing/grubbing will be restricted to the width of the equipment being used.
MP 0.42
- All extra material will be place at the end of the road
General Notes from Pre-Bid:
- Rock from excavation can be used in of weirs and slope
- Seed will be provided by USFS/ODFW and will be coordinated with winning Bidder
- Seed will be spread a 15lbs per acre ratio
- Contractor will be responsible for removing and disposing of metal culverts
Additional Submitted Questions:
1. Page 6/15 of the RFP under the MP 0.14 section offers an optional bid item that is not included on the bid item list on the two “Att D” pages of the bid forms, “Optional bid item: construct 2 boulder weirs and add 20 cy streambed rock to channel through prism.” Is this optional bid item supposed to be included on the bid forms?
The Only two optional line items are for MP 0.02 and MP 0.42
2. Is there a minimum width of the roadway ripping?
The width will be variable. Ripping width is intended to be that which is necessary to get equipment in and conduct the stream crossing work. It is not necessary to tear out additional trees just to conduct ripping.
3. Is ripping with a dozer with ripper shanks allowed?
We have this in the ITB: ”Equipment used for ripping shall be capable of lifting and shattering compacted soil rather than plowing, mixing, or displacing topsoil.” Per USFS soils staff: “[…] a dozer shank should be acceptable if it is used correctly and can lift and shatter rather than plow.”
4. Can water from the Creek be used to �ill water trailers/buffalos?
The best sources to �ill up are at 3C Rock day use area (42.96591 -122.88731, about 4 miles upriver from Tiller) or at the 28-353 road (43.08265 -122.64753)which is not far from the 2814 road turn-off (both are along the 28 road). They cannot use the public source out front for a big tank. USFS can provide a map if needed.
5. Is there a limit of acceptable NTU’s during culvert removals?
Attached is a screen capture of the dewatering BMPs and NTU specs from the Tom Creek Culvert replacement project, these would be adequate to adopt for this project.
6. Is straw required to be placed over any seeded areas?
The ITB directs that all disturbed ground will be seeded and also that all disturbed ground will be covered with slash to achieve 60-80% soil coverage and that weed-free straw can be used if that range cannot be met with on-site materials. So, I would interpret this to mean, “yes, seeded areas would be covered with straw. However, only in areas when on-site slash material was insuf�icient for required coverage levels.
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