A01.10_Attachment_03_Geotechnical_Data_Report_(17-R-0006)_REVISED_PAGES_1-4_ONLY.pdf

Isabella Dam – Geotechnical Data Report

Sacramento District

GEOTECHNICAL DATA REPORT

Dam Safety Modification Project Isabella Lake, Kern County, CA

Final Submittal for Phase II Solicitation

06 February 2017

The Geotechnical Data Report (GDR) for this project is available upon request. If you would like a copy of the GDR, please send an email to Melissa.A.DeNigris@usace.army.mil. The files will be sent via AMRDEC.

Table of Contents

Contents

1. Disclaimer

2. Limitations

3. Overview of Report Contents

1. Disclaimer Geotechnical Data Report (GDR) — This data report contains actual subsurface and other information that was collected at or adjacent to the Site by the Government, or for the Government, for use in preparing the Contract Documents. The Technical Data contained in this report upon whose accuracy the Contractor may rely are logs of borings, logs of trenches/test pits, Cone Penetrometer test results, geophysical information, contractor-reported lab results, contractor-produced SPT hammer results, original construction photos, rock core photos, original construction-era documents, recorded measurements of subsurface water levels, and contractor-reported optical televiewer data. The GDR does not include any interpretation of the data. If opinions, or interpretive or speculative non-factual comments or statements appear in the GDR, such opinions, comments, or statements are not operative parts of the GDR and do not have contractual standing. Subject to that exception, the GDR is a Contract Document.

A. Limited Reliance by the Contractor on Technical Data Authorized: The Contractor may rely upon the general accuracy of the Technical Data contained in the GDR. Except for such reliance on this Technical Data, the Contractor may not rely upon or make any Claim against the Government with respect to:

a. the completeness of this report for the Contractor’s purposes, including but not limited to, any aspects of the means, methods, techniques, sequences, and procedures of construction to be employed by the Contractor, and safety precautions and programs incident thereto, or

b. other data interpretations, opinions, and information contained in this report, or

c. any Contractor interpretation of or conclusion drawn from any Technical Data or any such other data, interpretations, opinions, or information.

2. Limitations The Government does not represent that the boring and test pit/trench logs, field and laboratory test results and other available geologic information show the conditions that will be encountered in performing the Work. The Government represents only that such information shows conditions at the locations of the borings, test pits/trenches, or other field data collection locations at the time that the data were collected. Each bidder must form their own opinion of the character of the work and of the materials to be excavated, make their own interpretations, and satisfy themselves by their own interpretations and research regarding all conditions affecting the Work to be performed.

The Contractor must assume all responsibility for deductions and conclusions as to the nature or condition of all earth, rock and other materials to be excavated and the difficulties of making and maintaining the required excavations, and of performing other Work affected by the geology and subsurface conditions at the Site.

The Contractor must assume that any kind of rock and soil may be encountered in excavations, including mud, quicksand, very hard rock, or other materials that are difficult to handle.

3. Overview of Report Contents

The information in the Geotechnical Data Report includes available borehole, cone penetrometer tests, trenching data, and other information from or relating to the Main Dam, Auxiliary Dam, Service Spillway, and the Proposed Emergency Spillway.

The following information is included in this report:

Subsurface Explorations and Tests Geophysics Geotechnical Lab Results Autohammer Efficiency Tests Construction Photos Rock Core Photos Original Construction Documents Select Piezometer Data Optical Televiewer Data