00_31_31.13_08.pdf

East Branch Dam, Dam Safety Modification, Cutoff Wall

SECTION TABLE OF CONTENTS

DIVISION 00 - PROCUREMENT AND CONTRACTING REQUIREMENTS

SECTION 00 31 31.13 08

SUBSURFACE INVESTIGATION INFORMATION

PART 1 GENERAL

1.1 SUBSURFACE CONDITIONS

1.1.1 Inspection of Geologic Samples

1.2 REFERENCE INFORMATION ON SUBSURFACE CONDITIONS

PART 2 PRODUCTS (NOT APPLICABLE)

PART 3 EXECUTION (NOT APPLICABLE)

-- End of Section Table of Contents --

DOCUMENT 00 31 31.13 08 Page 1

W911WN-13-R-0002 REVISED BY AMENDMENT 0001

SECTION 00 31 31.13 08

SUBSURFACE INVESTIGATION INFORMATION

PART 1 GENERAL

1.1 SUBSURFACE CONDITIONS

Subsurface exploratory borings have been obtained by the Government to determine the general character of the subsurface materials within the project area. Locations of the borings and boring logs that fall within the area of this contract are included for the convenience of the Contractor in the 2012 Geotechnical Baseline Report for East Branch Dam provided as Volume 2 - 2012 Geotechnical Baseline Report of the contract documents. The Government assumes no responsibility for any interpretation or deductions made by the Contractor from the logs, data, or report. While the borings are generally representative of subsurface conditions at their respective locations and for their respective vertical reaches, localized variations of characteristics of the subsurface materials of this region should be anticipated. Groundwater elevations, shown on the boring logs, are those encountered at the time when the borings were taken and will fluctuate due to factors such as rainfall, lake and/or river stages.

Seven additional borings will be required to be obtained by the Contractor as part of this contract, refer to Specification Section 02 32 00 SUBSURFACE DRILLING, SAMPLING AND TESTING. It is the Contractor's responsibility to obtain additional information, if necessary in his judgment. See also Section 00100 INSTRUCTIONS, CONDITIONS, AND NOTICES TO BIDDERS, paragraph 52.236-4011 SITE INVESTIGATION BY THE CONTRACTOR.

1.1.1 Inspection of Geologic Samples

Samples taken during geologic investigations by the Government are available to Contractor's and bidders for examination. These data represent the best subsurface information available; however, variations may exist in the subsurface between boring locations. Contractors and bidders may inspect these cores and samples as follows:

Pittsburgh Engineering Warehouse and Repair Shops 3510 Grand Avenue Pittsburgh, Pa 15225

Point of Contact: Mr. Kevin Gabig, CELRP-EC-DG Telephone (412) 395-7248

Cores from the following borings will be available for viewing on 3 June and 4 June 2013 from 8:00 a.m. to 4:00 p.m.: E-39, E-41, E-46, E-47, E-50, E-52, E-55, E-60.

Any request for viewings outside of thisthese dates will be by appointment only. Requests for all viewings are to be submitted by sending an email to LRP.CONTRACTING@USACE.ARMY.MIL with SUBJECT: "W911WN-13-R-0002: Core Viewing - your company name. Requests are to include the information required by FAR 52.236-27 SITE VISIT." Bidders must indicate any additional cores which they would like to inspect during viewings outside of these dates when requesting an appointment.

DOCUMENT 00 31 31.13 08 Page 2

1.2 REFERENCE INFORMATION ON SUBSURFACE CONDITIONS

Reference information on subsurface conditions at the project site is contained in the following reports:

USACE Pittsburgh District, 2012 Geotechnical Baseline Report for East Branch Dam (Volume 2 - 2012 Geotechnical Baseline Report)

RHEA Engineers & Consultants, Inc., Geotechnical Exploration and Phase II Environmental Site Investigation Summary Report – East Branch Dam, Elk County PA, prepared for USACE Pittsburgh District, September 2011

D'Appolonia Engineering Division of Ground Technology, Inc., Subsurface Exploration and 3D Model Development - East Branch Clarion River Lake Wilcox, Elk County, PA, prepared for USACE Pittsburgh District, 25 August, 2009

Gannett Flemming, Geotechnical Data Report - East Branch Dam, Elk County, PA, prepared for USACE Pittsburgh District, May 2012

PART 2 PRODUCTS (NOT APPLICABLE)

PART 3 EXECUTION (NOT APPLICABLE)

-- End of Section --

DOCUMENT 00 31 31.13 08 Page 3

1.2 REFERENCE INFORMATION ON SUBSURFACE CONDITIONS