Governor's Cup BioPak 240R Exam Taken from the 2019 Governor's Cup Mine Rescue Contest held in Wise, Virginia Progress Indicator: Question 7 of 20 7.  When demonstrating proficiency in gas testing while working a MNM mine rescue contest field problem, methane readings are considered to be correct if within plus or minus ________________________: Choices: 0.2% by volume of the actual value present. 2% of the actual LEL value present. 2% by volume of the actual value present. 0.2% of the actual LEL value present.