Premise:
"Screening protocols can be mandatory or voluntary."
Hypothesis: The protocols depended on the severity of the situation.

it is not possible to tell

Premise:
"Suppliers that have offered catalyst for coal applications in the past but currently focus strictly on gas and oil -fired applications were not included."
Hypothesis: The requirements were widened to include suppliers who made coal catalyst in the past but now focus on gas and oil.

no

Premise:
"so you don't have a lot of tree coverage"
Hypothesis: You have tons of shrub coverage.
no