_3_Government_Responses_21-R-0006_-_Conconully_Dam_Q_A_7_Jul_2021_0004.docx

Questions & Answers: 140R1021R0006-0003 (7-6-2021) Conconully Dam CAS Phase II Seismic Modifications Foundation Improvement Test Section Okanogan Project, Washington

Question #1: Is there a spec on the temporary cattle guard and where is it to be located?

Government Response: There is no requirement for a temporary cattle guard. Temporary fencing shall be high visibility fencing in accordance with Section 8-01.3(9)A1 of the Washington State Department of Transportation, Standard Specifications for Road, Bridge, and Municipal Construction (2021), M 41-10 (available at https://www.wsdot.wa.gov/publications/manuals/fulltext/M41-10/SS.pdf) and Standard Plan sheet I-10.10-01 (available at https://wsdot.wa.gov/publications/fulltext/Standards/english/PDF/i10.10-01_e.pdf ). The high visibility fencing shall fully enclose the Contractor use area and the excavation in the Work Area. The on site work is most likely during non-grazing season.

Question #2: Do we have to water and maintain the seeding after it is applied? If so, what is the maintenance period?

Government Response: No. Once seeded areas are accepted by the contracting officer at the site, further water and maintenance will not be required.

Question #3: Where are the surface clearing/stripping materials from the upper contractor use area allowed to be stockpiled?

Government Response: Surface cleared and stripped materials from the upper contractor use area should be stockpiled within the upper contractor use area. Additional area in the upper contractor use area can be approved by the CO for stockpile use if requested by the contractor. Additional areas disturbed in the upper contractor use area will be subject to the requirements in Sections 31 14 10 – Stripping and 32 92 20 – Seeding.

Question #4: Please provide the requirements for the weed wash station and where is it located?

Government Response: The weed wash station shall be in accordance with the U.S. Forest Service “Vehicle Cleaning Technology for Controlling the Spread of Noxious Weeds and Invasive Species” Manual 0551 1203 (available at https://www.fs.fed.us/eng/pubs/pdf/05511203.pdf). For convenience, key aspects of this manual are include below.

Use recommended wash pressures and flow rates from this manual. Washwater containment is not necessary with the exception of a geotextile mat. Use a geotextile with a maximum 100-micron opening size to capture weed seeds and hydrocarbons. The weed wash should be performed prior to equipment leaving and entering the Work Area. Locate the weed wash station on the access road, 100 feet prior to the slope up and out of the work area (the dam toe access road) or as approved by the CO. Washwater can be discharged to percolate through the geotextile into the ground. The washwater shall be in accordance with the stormwater discharge permit for the site (do not allow washwater to runoff into the adjacent channels or wetland areas). Materials collected by the weed wash station will be disposed of properly, off site.

Question #5: There is debris in the excavation and stockpile area wood and concrete. Can this be pushed to the side and left there?

Government Response: The wood and concrete debris in the excavation and work area shall be stockpiled with any concrete boulders from the excavation. This material is left in place at the stockpile location at the end of the project. See Section 31 23 11

Question #6: The access road will require some tree removals and branch trimming to get the equipment by. Can trees be removed and/or trimmed and the trimming left there?

Government Response: Trimming and/or tree removal needed at the access road shall be as described in Section 31 11 00 – Clearing, Part 3.01, A; clear vegetation from rights-of-way required for access to the work. This cleared material shall be stockpiled in the Contractor Use Area with other cleared materials as described in Section 31 11 00 – Clearing, Part 3.03, A; stockpile cleared vegetation in the Contractor use area. Upon project completion, flatten cleared vegetation to blend with surrounding terrain. Place waste material on site as directed by CO.

Question #7: The green gates posts on the access road will have to be removed temporarily to get equipment through. Is that ok and will be replaced when the work is completed?

Government Response: Yes. The green gate posts on the access road at the dam crest can be temporarily removed for the duration of the construction and then replaced at the original locations at the end of the project.

Question #8: For access to the work area, the existing ramp from the crest of the dam may need to be widened. Are there any wetland encroachment limitations at the base if the ramp is widened?

Government Response:

Please see Section 31 32 05 Paragraph 3.02.A.1.b. Specific exceptions to this will be approved by the CO.

Question #9: Please provide the height and voltage of the overhead powerlines running along the east access road to the dam crest.

Government Response: The power line is a 15 KVA the public utility has measured line at 30ft.

Question #10: Please provide a location to obtain water from Conconully reservoir and any specific requirements for the water supply suction (guarding, fish screens, etc.).

Government Response: Contractors can obtain water from Conconully Reservoir from the dam crest (within 400 feet of the left abutment) or from the shoreline of Conconully Reservoir near the upper Contractor use area. See image below. Contractors are allowed to access water from the Reservoir at other locations if desired. Contractors are not allowed to obtain water from the channels downstream of the dam. Water obtained from Conconully Reservoir should be pumped using a standard fish/debris screen. NMFS approved screen on the pump and spill protection for the pump is required.

Question #11: Please clarify what permits the contractor is responsible for obtaining and what permits USBR will be providing.

Government Response: Permits are highly dependent on the contractors mode and method of operation so a full list of permits can not be include that is the contractors responsibility. Contractor is responsible for obtaining necessary licenses and permits. Environmental clearance process has be completed by reclamation resulting in a finding of no significate impact. See section 01 57 30 water pollution control Paragraph 1.05

Question #12: Is a preliminary bird/wildlife survey required if work is completed outside of the specified bird season (March – August)?

Government Response: If the site work is initiated outside the specified bird season (March – August) a preliminary bird/wildlife survey is not required. If construction were to take place during bird season surveys would be required.

Question #13: If work is delayed due to nesting birds, how will the delays to the contractors be compensated?

Government Response: The contractor will be compensated for differing site conditions, as defined in the FAR, that prevent, delay, or hinder performance in accordance with FAR 52.236-2 Differing Site Conditions (APR 1984), as set forth in the solicitation.

Question #14: If obstructions are encountered in the test section, how will the contractors be compensated?

Government Response: The contractor will be compensated for differing site conditions, as defined in the FAR, that prevent, delay, or hinder performance in accordance with FAR 52.236-2 Differing Site Conditions (APR 1984), as set forth in the solicitation.

Question #15: Please provide photos taken by the Bureau during the second site visit.

Government Response: YES

Question #16: Will ITAR apply to this pursuit or is this generic/boiler plate language in the solicitation?

Government Response: NO

Question #17: Will EAR apply to this pursuit or is this generic/boiler plate language in the solicitation?

Government Response: NO

Question #18: What exactly will we as the contractor be accessing? Will we be accessing the client’s network or system?

Government Response: The contactor will provide a standalone CDMS system. USBR will access the contractors network/system. The contractor will not access USBR network or system. Please see section 01 31 30 Contract document management system.

Question #19: Does the fill placed to widen the access road need to be removed prior to seeding?

Government Response: The fill placed to widen the access road will most likely be required to remain in place at the end of the project. This determination will be finalized following the review and approval of the contractor’s plan. The disturbed areas below the widened access road shall be seeded in accordance with Section 32 92 20 – Seeding.

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