Construction Activity pollution prevention inspections

Hello. I am working in a project that has the Erosion and control plan following the CGP 2012(LEED V4) , part of the plan is to have weekly inspections on site to review how the erosion and control follows the specifications. The CGP says that a qualified professional needs to be in charge of the site inspections. We are not sure of what does mean. Does it need to be a Civil Engineer,an Environmental professional or anyone can do it? What kind of training needs to happen to be considered a qualified professional? Now our Environmental manager is doing the inspections but we are worry when she is not available(vacation/sickness) if any other person can do the inspections and it is valid to LEED or LEED doesn't care who does the inspections only that they are done? Thank you Irene