Questions and Answers 240605.docx

· The contract spec identifies excavators as equipment required to utilize biodegradable hydraulic fluid, is this a requirement of all equipment that will be operating in the streambed?

· No just the excavators

· Do stream banks of feeder creeks to Henderson Creek that occur in the project area require bank stabilization? (the comment being that if they are not addressed as a part of the project that they will continue to fail)

· The feeder streams will be allowed to head cut to allow the channel to adjust. No fabric will be placed across the tributary.

· What can be stored in the stockpile area and what is required to be hauled off site?

· Unutilized treetops? (Could these be mulched and used for erosion control?)

· Yes, tops can be mulched and spread around the stockpile site. Excess tree materials will be stockpiled in the stockpile area.

· Should concrete with wire and rebar be hauled off site?

· Concrete chunks from the dam may be buried at the bottom of the waste disposal site. If rebar is in the concrete, then it can be buried at the bottom of the unsuitable fill stockpile area. All other metal materials and trash must be removed from the national forest.

· What are the specs for the material that is supposed to be used for the stockpile area’s berm?

· It is the material that you excavate out of the stockpile area.

· Keying in stone and root fans- how deep should they be buried or what does spec require? (I think a majority of contractors at the pre-bid understood that streambed conditions change throughout the project’s reach and that this will be dictated largely by the plan spec and desired stream grade/grade control for those areas).

· The contractor will construct the lines and grades shown on the plans. Rock will roughness and embedded roughness vary. Bury depth is dependent on size and location. See sheet 11 (C-06) of the plans. Trees are placed with equipment rental, embedment will vary, no rock excavation will be required. Tree placement is catered to the site conditions. See sheet 18 and 19 for log jam details.

· Is there a maximum spec on DBH of smalls tree that can be removed to improve site access on/along access roadways with CO consultation? What is that spec, 3” DBH?

· The maximum size that can be removed without consultation is 3” diameter at breast height. Anything larger needs biologist clearances

· Will any soil need to be shaken off or removed from rootfans prior to their installation in the stream channel?

· Yes, the tree should be shaken or dropped on a set of logs high enough the root fan won’t be damaged

· The spec on the trunk size of logs attached to rootfans is 14-18+”. Is this measured at DBH or at the smallest portion of the taper remaining?

· At DBH

· What must happen with woody material already down in the stream bed? Will it have to be moved to the disposal site, used in the project, left in place?

· Woody material already down in the channel will be incorporated into the large wood structures and channel along the project.

· What is in contract spec for equipment decontamination?

· C.9.3All equipment shall be power spray washed to remove oil, grease, dirt, and potential noxious weed seeds off the National Forest. Equipment will be inspected by COR prior to mobilization onto FS lands. The Contractor will notify the COR when equipment is cleaned to schedule an inspection.

· What happens if felled trees that will be used for streambank stabilization are damaged or broken while moving to restoration site? (When do they become, or when do we consider them, unusable?)

· Usability depends on the damage. If broken into smaller pieces they can be used for racking material at the front of the log jam. If they are cracked, they are still usable if they are solid. Care will be taken when transporting the trees.

· Are we requiring contractor to set control points and, if so, are we requiring a certified/licensed surveyor? (does this change the contract package?)

The contractor is required to set reference stakes. The contractor will establish the centerline locations for channel templates and stake template locations designated in the contract specifications shown below.

19.0 Construction Stakes, Lines, and Grades

The Contractor will establish reference staking and control elevations during construction. The contractor will:

19.1 Provide 2 reference stakes (2”x2” x 12” Hub or rebar stake), 2 site lathe for each cross sections, and 1 centerline stake for each change in channel template.

19.2 Reference stakes are required for pool tail, pool head, and curve apex of pools. The begin and end of pools are only 4 or more feet away from the pool tail and pool head and can be offset from the pool tail and pool head reference stakes. If distance between reference stakes is greater than 50 feet additional reference staking is required.

19.3 Each stake will have centerline station, offset horizontal distance to centerline horizontal alignment, cut or fill depth, finish grade elevations, and elevation of the hub on each stake.

19.4 Provide a write in the rain notebook with all reference staking information (station, distance to centerline, cut and fill to finish grade, and elevations of finish grade and elevations of

Delete Subsection 152.05(d)(2) and replace with the following:

(d) Slope and reference stakes.

(2) Conventional survey methods. When required, locate slope stakes on designated portions of the road. Locate the slope stake catch points and use them to establish clearing limits and slope stake references.

Mark slope stakes with the station, the amount of cut or fill, the horizontal distance to centerline, and the slope ratios.

Place slope reference stakes at least 10 feet outside the clearing limit and mark with the offset distance to the slope stake. Place sight stakes when required.

Prior to clearing and grubbing operations, move the slope stake outside the clearing limit to the slope reference stake. After clearing and grubbing and before excavation, reset the slope stakes in their original position.

Use the designated method to establish the slope stake catchpoint.

Method I—Computed Method. Use the template information shown in the plans or other Government‐provided data to calculate the actual location of the catchpoint. The slope stake “catchpoint distance” provided may be used as a trial location to initiate slope staking. Recatch slope stakes on any section that does not match the staking report within the tolerances established

· in Table 152‐2.

· In Section C, paragraph 22.1.c, it states a minimum operating weight of 50,000 lbs while the schedule of items 622(01) states a minimum operating weight of 55,000 lbs. Which is the accurate minimum operating weight?

· 50,000lbs, the schedule is a typo