Landslide Hazard Report_compressed

Specialists in transport geotechnics

    •    Variability in Mechanical Properties: Normal geotechnical variability in the inferred properties of
         materials represented in the boreholes, the performance of foundations or other elements that are
         tested or observed, and the performance of structures that are in contact with the ground in general.
         The data collected is only directly relevant to the exact location where the investigation was
         undertaken. The subsurface conditions between test locations have been inferred based on
         judgement and experience with the facts available at that time and related to the relative position of
         the proposed works;
    •    Testing Limitations: Uncertainty associated with geotechnical testing, design correlations associated
         with those tests or material descriptions, and case histories from which geotechnical parameters may
         have been inferred or in design and/or analysis methods that have been adopted;
    •    Construction Effects: Variability in the performance of construction equipment, such as hammers,
         cushions, guides and associated equipment for piling, construction effects that may influence the way
         structures interact with the ground, as well as inaccuracies in data measurement and testing methods
         that may have been used to record construction processes.
    •    The results provided should be considered as indicative of the best estimate of likely outcomes (or
         range thereof), and should not be considered to be definitive or absolute, or represent the full range
         of possible outcomes at this site. Caution and prudence should be exercised when making decisions
         with significant implications for your project. The limitations of this report as outlined herein should
         be incorporated in decision making, and appropriate contingencies should be put in place to
         accommodate unexpected variability in relation to the works.

Geotechnical Modelling
Model parameters that are used may vary in nature depending on the purpose of the analysis. Where it is
necessary to make a realistic evaluation of the soil model, we would normally describe this as a best estimate.
Depending on the particular application, it may be important to understand the sensitivity of the solution to
soil model changes. We may then also define an upper bound soil model and a lower bound soil model, being
estimates of the likely strongest and weakest soil conditions which are anticipated based on the available
geotechnical information and inferred geotechnical parameters. In certain circumstances, such as cases where
the ground conditions appear to be extremely uncertain or variable, we may also define extreme upper bound
and extreme lower bound parameters which are intended to represent the likely extremes of the site
conditions. In all cased, these models are inferred using engineering judgement from the available information
and actual conditions and associated outcomes may differ from those assumed or given in our report, due to
the inherent unpredictability of the ground, as outlined in the preceding section.
It should be noted that depending on the particular application either upper bound or lower bound analyses
could be deemed conservative.

Disclaimer
The results, opinions, conclusions and any recommendations in this report are based on assumptions made by
CGC in order to carry out the work. CGC specifically disclaims responsibility: arising from, or in connection
with, any change to the site conditions or the nature of the proposed works including change in position of the
structure or proposed works relative to the available data; to update this report if the site conditions or project
details change or if the report is used after a protracted delay; and for liability arising from any of the
assumptions that have been made or information provided being incorrect, incomplete or inaccurate.
Subject to the terms of an Agreement for Professional Services between CGC and the client, and to the
maximum extent permitted by law, all implied warranties and conditions in relation to the services provided by
CGC and this report are excluded.

Closure
Unless otherwise documented by way of a signed agreement for the services provided, all services in preparing
this report have been provided under CGC’s standard terms and conditions which are referenced in our fee
proposal. The report is specific to the brief provided with its associated time and cost constraints.
Should you require any further information or clarification in relation to this report, please contact Civil
Geotechnical Consultants.



10 May 2022                           CGC-SR-2022-011-R01-Rev01                                           Page II