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Site investigation design – techniques of data assessment and interpretation

4 November 2008, Stirling

The problem

Site investigation forms the foundation of all contaminated land assessment. Retrieval of poor quality data from the field compromises all subsequent interpretation, risk assessment and remedial design work. Similarly, inadequate review of the site and laboratory data can also lead to misleading conclusions and potentially inappropriate decisions on the risks associated with ground contamination.

A solution

Set specific objectives for the site investigation and assessment and understand how to design site investigation to produce best possible results within a limited budget. Due reference will be given to current guidelines for investigation and assessment. Understanding the limitations of site works and areas where uncertainties enter into the contamination assessment process through site works, lab analysis and initial risk assessment.

Required level of knowledge

Basic understanding of site investigation practice and subsequent use of the data for ground
contamination assessment.

Programme

10.00	Registration and refreshments
10.30	Introduction to the day
10.45	Site investigation design Desk study and initial conceptual model Objectives for sampling strategy Assessment of investigation methods Design of analytical suite based on conceptual model
11.15	Good site practice Obtaining good soil samples QA/QC, duplicate sampling Installation of gas and groundwater wells Reacting to unexpected ground conditions
11.45	Refreshment break
12.00	Generic quantitative risk assessment Selection of generic assessment criteria based on receptors Simple data screening and identifying contaminants of concern
12.30	Assessing elevated concentrations in the context of the conceptual model Development of conceptual model using all collected data Characterisation of source impacts Mobility and toxicity of contaminants identified Introduction to the concept of averaging areas. (CLR7)
13.00	Lunch
13.45	Averaging areas and statistical analysis How to define averaging areas When is statistical analysis appropriate CLR7 method and use of other statistical distributions How to interpret the results.
14.15	Group work Assessment of data to demonstrate concepts discussed and highlighting interpretation subjectivity through identifying uncertainties/limitations of site works, development of conceptual model, definition of averaging areas, and draw conclusions on impact areas/contaminants.
15.15	Refreshment break
15.30	Group work feedback
16.00	Summary Does the available data allow sufficient confidence in the assessment for the project to progress to the next stage?
16.15	Close

The workshop will be conducted by Ramboll Whitbybird in association with CIRIA

CPD

CIRIA recommends this workshop for up to 5 hours towards CPD requirements with the ICE, CIOB RICS, CIBSE & IstructE.

Venue

Stirling

Terms and Conditions

For non-member registrations, your booking will be confirmed once payment has been received. Bookings must be accompanied by a cheque payable to CIRIA or credit card details.

Confirmation of your booking will be sent out by CIRIA two weeks prior to the event.

Cancellations

Any booking fee paid will not be refunded unless written confirmation is received at least five working days prior to the event, substitute delegates are welcome.

CIRIA reserves the right to vary the programme and cancel the event in case of insufficient bookings.

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