Last week, we analyzed the SEC’s $6.2 million settlement with a Big 4 audit firm relating to auditing failures associated with Miller Energy Resources, an oil and gas company with activities in the Appalachian region of Tennessee and in Alaska. The SEC order determines that the Big 4 audit firm did not properly use the reserve reports conclusion of PV-10 (present value at 10%). This post considers the proper use of reserve reports and risk adjustment factors when determining fair market value.