CSE provides litigation, expert testimony, insurance claim management, third party review, and mediation support services throughout the Commonwealth of Massachusetts. CSE provides trial preparation and mediation preparation assistance, expert witness services, assistance for deposition preparation, depositions, mediation testimony, and courtroom testimony. CSE’s staff including our Licensed Site Professional (LSP) and Project Manager (PM) use their collective experience to assist clients in negotiations, investigations, and cost recovery to support plaintiffs or defendants in environmental lawsuits.