W912P722B0002 Request for Information Responses Part III.pdf

DRY CREEK ECOSYSTEM RESTORATION PROJECT – PHASE I

AS OF: 06 May 2022

QUESTIONS & RESPONSES

SOLICITATION NUMBER W912P722B0002

The intent of this section is to provide questions & comments received from interested parties on the above solicitation, and our responses to those questions and comments. It is possible that the information below does not reflect 100% of the questions and responses. The questions and comments do not necessarily represent questions received from any particular contractor.

Questions and responses are provided for information only and are not made part of the solicitation. Only a formal amendment (SF30) to the solicitation changes the solicitation.

Changes to any previous responses in this document will be struck-through and new, updated responses will be provided as appropriate

RFI

# Spec Section RFI (Question) Responses

1 SF1442

Do you know what the Engineers Estimate is? All I see is a 'Magnitude between $5M - $10M'

The Engineer’s Estimate will not be disclosed. Please refer to Standard Form 1442 on page 3 of “W912P722B0002 Dry Creek_IFB and Specifications” for the magnitude of the requirement.

The information in the plans and specifications shall be used to make the estimate.

2 Amendment

We can’t get the Dry Creek Phase 1 drawings to cooperate with our estimating software. It needs a password to open.

Can you tell me what the password is please?

Please refer to “W912P722B0002 Dry Creek_Amendment 0001”.

Amendment

Section 00 21 00

Is the site visit mandatory for all bidders?

Please refer to FAR 52.236-27 in Section 00 21 00 of “W912P722B0002 Dry Creek_Amendment 0002”. Attendance at the site visit is not mandatory, but is still highly encouraged.

4 Are we allowed to fly a drone around the No site to collect video footage of the project reaches?

Plan Sheet G-02, General Notes, Note 8.

Will topographic survey be redone as the last LIDAR survey was done in 2013/2014?

No. For information on pre-project topography see Plan Sheet G-02, General Notes, Note 8.

Plans

In areas where there is the tag NIC, how do you intend for the split of work on the border of this zone take place?

Work shall progress up to the N.I.C. cloud as shown on the plans. LWS more than 50% within the N.I.C. cloud shall be considered N.I.C. Bank Treatment Type 1 shall extend up to the N.I.C. cloud shown on the plans.

Will collaboration with A8 companies be in this scope?

No

7 Plans and Specifications

Are there scheduled and or timed releases of water into Dry Creek during the working calendar days of the project?

The contractor shall follow the plans and the specs to accomplish the work as there are no scheduled or timed significant flood control releases for the proposed environmental work window in 2022 and 2023. However, releases may become necessary if weather conditions drastically change.

Specification

Section 35 44 00 Part 2.5

Are there any specific structural standards or requirements on

The specs are intended to be sufficient for describing the product requirements of the steel threadbar, nuts, and washers. See Spec. Sec. 35 44 00 Part 2.5 Threadbar and Fasteners.

the steel to be used within the 1’ high crib wall?

Specification

Section 31 23 19

How much do you want us to control and keep our work areas dry?

See Spec. Sec. 31 23 19 Dewatering.

Specification

Section 01 57 19

Paragraph 3.5.2

What are the turbid limits for the downstream water flow?

See Spec Sec. 01 57 19 Par. 3.5.2, turbidity levels at point of compliance 500ft downstream of in-stream construction cannot exceed 20% above naturally occurring background levels or 20 NTUs, whichever is greater.

11 Plans and Specifications

Access to the road starting on Dry Creek, what have they done, what has county done etc? IE: tree clearing around the entry point.

The contractor shall follow the instructions in the plans and specs for modifications necessary for construction access. No, the County didn’t do any work on the access to the road.

12 Plans

What is the line of sight needed around parts of the jobsite?

Will extra trees need to be removed for enhanced visibility?

IE: site access or other areas of viewing.

Trees clearing shall be according to the plans and as approved by the Government Representative.

13 Plans

Are there any known vineyard irrigation lines or vineyards that would be get damaged or removed during our grading activities?

See plans for information

14 Plans

Are there specific access areas to the water ways?

See plans for information.

15 Plans

Are there any areas we can pump water to? IE: a silt or sediment pond.

Areas available for construction activities are shown on the plans.

Specification

Section 31 23 00

How is native streambed material defined?

…Investigate the mix % to make sure the fines aren’t outside the limits.

See Spec. Sec. 31 23 00 Excavation and Fill, Part 2.1 Materials.

17 Plans and Specifications

What is Interfluves’ oversight on install of the LWS? Will one engineer/monitor be present at time on install or will multiple monitors be available

Government will provide appropriate Quality Assurance oversight as dictated by the Contractor’s schedule and as needed per the plans and specifications.

so we may install multiple LWS?

Section 01 57 19

Paragraph 1.8

Do we need to take out any permits to cross the bridges?

See Spec. Sec. 01 57 19 Par. 1.8, contractor is required to obtain any licenses and permits required for completing the work.

Specification

Section 00 21 00 and

00 72 00

I have a question regarding the bid guarantee requirement on page

10. May a subcontractor provide the guarantee for the prime?

Per FAR 52.228-1, the bidder shall furnish a bid guarantee. The bidder’s name on the SF 1442 must match the name on the bond.

20 Amendment

What is the insurance requirements of the project? I could not find in the Specs documents.

Please see Section 00 73 00 in Amendment 0004.

Is there any intention towards phasing on this project or milestones as in year 1 and year 2?

No. Contractor shall submit their sequence with the submittal of the schedule.

And where are the options in the phasing?

Contractor shall submit their sequence with the submittal of the schedule depending on whether option is exercised or not.

22 Specifications

What is the quantity of logs that are already secured in the stockpile? Rootwads?

Snags?

The contractor shall use the plans to determine how much snags and rootwads are needed and the government will provide all Snags and Rootward needed for the project. The government has provided the stockpiled location map with the specification package.

W912P722B0002

Geotechnical Report

Is there a Geotechnical engineer report completed on this project and or available for our review?

Yes. See attachment.

Specification Sections 01 50 00 and 31 11 00

Per the distributed stop list and section drawings of stop 3b and area 10A3, are there structures, debris, and farming equipment to remove here? It appeared these aforementioned items were in the way of our access to the site.

Site access shall be per section 01 50 00 and the Construction Site Plan as approved by the Government Representative. The contractor shall refer to Section 31 11 00 for work related to Clearing.

25 Plans

Is there a designated disposal area for chips and mulch?

Areas available for construction activities are shown on the plans.

Specifications Section 31 11 00

Will they need to be removed from all work areas?

See Specifications Section 31 11 00

Can we negotiate with property owners to stockpile on their sites?

Yes.

26 Specifications

Will any water source be available from the vineyards to use for construction and dust control?

No, the contractor shall come with a plan to supply the water for the dust control.

Please see the Specification for the Dust Control Plan submittal.

27 Specifications

Per sheet C-17 Note 3 , Optional Bridge.

Can you provide a more definitive detail as to what type of bridge and length of bridge would be required?

No. Contractor must comply with applicable permits per the Specification.

28 Plan Sheets 24, 47, & 48

I couldn’t find grading plans for the bank repair work shown on sheet 23 (C-21).

Please direct me or provide.

See section views on Sheets 24, 47, & 48 for Main Channel Bank Treatment Sta. 544+00 to 547+00 and 526+00 to 527+00 grading lines.

29 Specification Section 14

On sheet 23, At Bank Treatment Sta.

526+00 to 527+50, detail 3/51 is called out for the bank treatment. This detail does not agree with section 14/24 which is called out thru the same portion of the bank. (Specifically the toe of the bank).

Please clarify.

Section 14 on Sheet 24 shows a Type 3 rock toe, but partially obscured by also showing the High Bank Pool LWS. The “At Pool Version of the Type 3 Bank Treatment (3/51)” shall be constructed at the toe of the bank in addition to the High Bank Pool

LWS (2/60)

30 Plans

Please provide an elevation for the top of the Rock Toe at detail 3/51.

The top elevation of the Rock Toe in Bank Treatment Type 3 shall be the local OLW elevation. This is shown on correctly on the Typical Section – Bank Treatment Type 2 in the plans.

31 Amendment

In order to allow time for review of specifications and quantifying all aspects of this project into one Base Bid item and one Option Item; will the government consider extending the bid date by two weeks?

Please see Amendment 0003.

Will the government consider providing CADD files to assist with quantity takeoff development?

CADD files can be provided upon request for informational use only. Please submit your request via email to Mr. Joshua Kaimikaua at joshua.j.kaimikaua@usace.army.mil.

Requests must be received prior to bid opening.

33 Plans and Specifications

When the construction plans and specifications conflict with the environmental documents, which should be considered the authority? For example, the environmental documents were written for a larger scope than the plans and specification. The plans are for reaches 10 and 13 but the environmental assessment also discusses reaches 2a and 4c. Should the budget address mitigation items that appear outside of the scope described in the plans and specifications?

Contractor shall bid per the plans and specifications.

mailto:joshua.j.kaimikaua@usace.army.mil

34 Plans and Specifications

When there are generalities or conflicts between the environmental documents and bid specifications, do the bid specification documents take precedence over the environmental documents?

Contractor shall bid per the plans and specifications.

Specification

Section 01 57 19

The environmental documents provide that “Equipment will not be operated in the stream channel of the flowing stream except as necessary for construction of temporary cofferdams or construction of temporary crossings.”

There is no exception for removal of the temporary cofferdams and temporary crossings. Should “construction of” be interpreted to include de-construction, removal of temporary diversion structures?

Yes, Refer to Specification Section 01 57 19 for additional requirements for installation and removal for work area isolation tasks.

Section 31 23 19

Are the constructed riffle features considered in-channel work or can be constructed using cofferdams and considered out of channel work?

Constructed riffles are in-channel work and must be isolated from the live stream during construction using cofferdams and other stream diversion measures to isolate the work area per Specification Section 31 23 19.

37 Plans and Specifications

Can you provide the environmental permits as part of the solicitation documents (401, 404, 1600, County Floodplain Development, Encroachment permit, Grading permit, if any)?

Permits are to be acquired by the Contractor other than those included with the solicitation package.

Request for Information

Response #7

Can you provide a Lake Sonoma release schedule?

See response to RFI # 7

Request for Information

Response #6

For the areas labeled as “N.I.C.”, will construction within those area be happening concurrently with the contracted restoration areas?

No. See response to RFI # 6 for additional information.

Section 01 57 19

Does the onsite biological monitor need to be third-party?

Bird monitor requirements are listed in Specification Section 01 57 19 and the Contractor shall have qualified biologist performing the biological monitoring.

41 Plans

Is there a designated location for the excavated soil/vegetation debris, etc. material to be spoiled off site or on site? If not, is it the responsibility of the contractor to develop one and to perform all associated environmental compliance?

Available areas for construction activities and including site access and staging are provided and shown on the plans. See response to RFI # 25 for additional information.

42 Specifications

Has the USACE or other entities performed any NEPA or CEQA related to spoils for this project?

NEPA/CEQA documents are incorporated by reference in the specifications.

Specification

Section 01 50 00

Section 3.4.2 provides that the contractor is responsible for any damage to roads caused by construction operation. It is understood that the

Contractor is responsible for repairing damage to roads used to and from the project site by the contractor and any subcontractor hired by the contractor for construction of the project according to the plans and specifications.

ACE will continue to ship in additional boulders and trees. In the event of damage cause by other contractors providing materials not under supervisor or control of contractor, would the contractor still be responsible for repair or is “construction operation” interpreted narrowly to only those activities under contractor’s control and supervision?

Section 01 50 00

Section 3.4.3 (Rush Hour Restrictions) requires that the contractor not interfere with peak traffic flows. The work is in a very rural area with commercial winery operations.

Can you identify the rush hour period for the work?

No, a rush hour in Dry Creek cannot be identified.

There are several heritage oak trees that will need to be removed and/or trimmed. Were oak tree permits obtained or will they be the responsibility of the contractor?

See response to RFI # 37. The Oak tree permits are the responsibility of the contractor.

Will mitigation that may be required as part of the oak tree permits be responsibility of the contractor?

Mitigation will be responsibility of the contractor.

47 Plans and Specifications

Will contractors be allowed to trim vegetation along access routes? This includes both public and private roads.

For the access routes, yes clearing shall be done in accordance with the requirements in the plans and specification. Clearing on public road shall follow the local policies and obtaining the permits and approvals are the responsibilities of the contractor.

Request for Information

Responses #24 and #50

During the site walk, abandoned cars and other metallic refuse was observed. Will the contractor be required to remove and dispose of items such as abandoned cars or other

See response to RFI # 24 and 50.

discovered non-naturally occurring items?

Request for Information

Responses #24 and #50

During the site walk, treated wood timbers were observed in the work areas or impacting the access routes. What will the contractor’s responsibility be as to treated wood waste?

Should more that 10,000 pounds be discovered, will the contractor be deemed the generator or the agency?

Identification of debris along the proposed access routes shall be part of the clearing and grubbing task and the Clearing and Grubbing Plan submittal. For non-naturally occurring material and waste, refer to responses to RFI # 24 and 50.

At least one unmarked metal, five-gallon bucket was observed. If hazardous waste is discovered, will the contractor be responsible for identification and disposal?

No, please refer to FAR Clauses 52.236-2 and 52.243-4.

What are the specifications for the underground irrigation water line located on sheet C-42?

There are no specifications available at this time. All underground irrigation is not to be disturbed.

As pointed out by ACO, the bid documents make no provisions for rain or other days when work must stop, notably red or high fire risk days.

Will an addendum or other document be issued related to weather impact on progress?

No, please refer to FAR Clause 52.211-13.

Request for Information

Response #26

Section 3.4.4 requires dust control by the contractor. Will the contractor be allowed to use water from Dry Creek for dust control or will water need to be obtained from other sources?

See response to RFI # 26.

Specification

Section 31 11 00

If winery infrastructure is present (i.e., vines and fence), is it the responsibility of the

Per Specification Section 31 11 00, Contractor is responsible for removal as shown on plans and disposal as shown in specifications.

contractor to remove and/or replace the infrastructure? If so, to what standard would replacement be required? Please speak to responsibilities and liabilities associated with the removal of mature vines.

Section

01 57 19, 3.3.2, and 3.14

Where is the large woody material (LWM) being sourced from? As more woody material is being brought in and staged for this project, are there concerns of spreading Phytophthora or other tree diseases? Are there any precautions or treatments that the contractor needs to take to prevent the spread of Phytophthora?

Government furnished logs are being sourced from multiple locations. Requirements associated with Phytophthora are listed in Specification Sections 01 57 19, 3.3.2, and 3.14.

Section 32 93 00

Is there a warranty period associated with the redwoods to be planted on sheet C-42 like that of the live stakes?

See Specification Section 32 93 00. Warranty period should be the same as all the other plantings on the project.

Specification

Section 32 93 00

How long is the establishment period for the planted materials?

See Specification Section 32 93 00 Part 3.2 Quality Control Sub-Part B.

Is there a quantity table available for the seeding quantity like the quantity table for the LWS Summary of Quantities on sheet D-23?

No, there is not a seeding quantity table provided on the Plans.