This week the Howell Environmental team was on site performing a geotechnical investigation for a proposed building addition. The Howell team utilized NQ Rock Coring, which is useful in identifying risk for sinkholes and cavity identification in karstic terrain.
Pictured below is a fractured micro-crystalline lime and marble rock core sample. After the sample is pulled, we add diluted hydrochloric acid to the mineral and look for effervescence (bubbles). This is used to identify carbonate. With this information, the client and Howell Engineering can make decisions regarding preliminary foundations moving forward.
In just 30 hours on Howell's new Geoprobe, Howell Environmental has completed standard penetration testing, DT22 soil sampling, and NQ rock coring!