They specifically stated that this access would only be between 6AM and 6PM MST or "Normal Business hours". Not seeing anything that's allowing them outside of these hours.
IANAL, but have written more than my share of SOWs and contracts of this type. Drafters tend to always default to the position of greatest optionality for them. Hence, "expected to be".
They DID have permission to lockpick, and maybe the state asked for testing after 6pm MST but hasn't released the request (per the blurb below)
"Requests for testing outside this time period outside the above may result in additional charges per the terms of the MSA"