QUESTION# $1$: The only time a collector should collect a DOT$/$DFW urine sample as a monitored collection is: ;

${002185}^5$ When the donor has brought something to the collection site with the intention to adulterate his$/$her sample

When all sources of water cannot be secured in a single toilet restroom without a stall

Monitored collections are not authorized IAW DOT regulations

When all water sources cannot be secured in a multistalled restroom