CSL tests CSL tests Bobby Ryan (Geotechnical) (OP) 7 Mar 17 20:31 Good day. I am working on a university project and have to estimate the costs for 6 CSL tests of 30 feet each. Is it possible to have running costs in the industry for this type of work? Thanks! RE: CSL tests Ron (Structural) 8 Mar 17 11:48 I will presume you are referring to crosshole sonic logging. Each site will be different, mostly because of the drilling difficulty, access, borehole spacing, number of lab tests for correlation, sophistication of the instruments involved and of course, the time required to do the testing. I would suggest you call a local geotech or geophysical testing firm to get a rough estimate. RE: CSL tests Okiryu (Civil/Environmental) 12 Mar 17 08:33 Call GRL or PDI and ask for a quote. They are quite responsive and may help you on your reasearch.