Is GPR the only investigation method that you have available at this site? I would recommend, at a minimum, at using a Geoprobe to determine the soil stratigraphy. As you are aware, a better option would be to hire a drilling contractor to perform a boring at the site (now of course, the cost of...
I would have to agree to the previous posts, which indicate that it depends on what the company is currently looking for. In some disciplines (like geotechnical or structural), many firms require a MS degree. If you have a BS degree and 4 years of experience, I would recommend taking the PE...
A review course is recommended as it can provide extra exposure to practice problems and lectures. It can be offered through an engineering society on a weekend or through live webinars. Typically, the program is separated into several sessions, each covering a core topic. Experts (licensed...