scottm8
Civil/Environmental
- Jun 7, 2011
- 10
Hi,
I am a junior engineer working on a project for a public client and the EPA. The client is used to dealing with environmental data, contamination, remediation goals etc. Now that some soils testing is needed they are asking for data quality objectives (DQOs), a "geotech SAPP/QAPP", and limits for Type I/II decision errors to determine the number of geotech test. Not having a lot of experience, I am unsure how typical these practices are for geotechnical engineering. Seems like geotech testing is too expensive to select a "sample size" based on confidence intervals etc. The number of samples should be based on intuitive estimates of the expected variability in the soils and the different strata/parameters needed, correct?
What are your experiences/thoughts?
I am a junior engineer working on a project for a public client and the EPA. The client is used to dealing with environmental data, contamination, remediation goals etc. Now that some soils testing is needed they are asking for data quality objectives (DQOs), a "geotech SAPP/QAPP", and limits for Type I/II decision errors to determine the number of geotech test. Not having a lot of experience, I am unsure how typical these practices are for geotechnical engineering. Seems like geotech testing is too expensive to select a "sample size" based on confidence intervals etc. The number of samples should be based on intuitive estimates of the expected variability in the soils and the different strata/parameters needed, correct?
What are your experiences/thoughts?