Suisun Bay Questions Responses 8 Jul10.pdf

SUISUN BAY CHANNEL & NEW YORK SLOUGH MAINTENANCE

DREDGING PROJECT, CONTRA COSTA COUNTY, CALIFORNIA

AS OF: 8 July 2010 Page 1 of 5

QUESTIONS & RESPONSES

SOLICITATION NUMBER W912P7-10-B-0009

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.

No. RFP Section Question Response

The information provided now does not completely show contour lines where dredging will be performed.

We would like to request sounding data of the project in “xyz files” and line files in CAD format.

Having this information available will help the bidders to prepare the most competitive bids.

Yes, the latest survey sounding data will be available to all the bidders.

2 It appears that the hydrographic survey for the solicitation was performed using single beam. Will USACE collect survey data using multi beam before the bid? If so, we request that an “xyz files” be made available to bidders.

The xyz data for the single beam survey will be sent out as part of the responses to the RFIs.

3 As it stands right now, the

Contractor’s method of survey is not stated in the Specifications.

Will the USACE specify the survey method to be used by the Contractor such as single beam or multi beam?

The Contractor may use single beam for QC surveys. The Government will use single beam for pre and post dredge surveys and multi-beam survey to clear each reach for high spots.

4 How does the USCOE define the payable quantity for areas between project depth and 1-foot of paid overdepth?

The Contractor will be paid for all material removed from the 1-foot paid overdepth layer as defined in Section 01 32 23, Para. 3.4.1.2 .

AS OF: 8 July 2010 Page 2 of 5

QUESTIONS & RESPONSES

SOLICITATION NUMBER W912P7-10-B-0009

5 What method of calculation will be used to calculate dredged material quantities?

The Government will use the methods described in EM 1110-2-1003, which includes the average end area method.

AS OF: 8 July 2010 Page 3 of 5

QUESTIONS & RESPONSES

SOLICITATION NUMBER W912P7-10-B-0009

AS OF: 8 July 2010 Page 4 of 5

QUESTIONS & RESPONSES

AS OF: 8 July 2010 Page 5 of 5

QUESTIONS & RESPONSES