UPDATE 1-Motiva has small Norco hydrocracker leak

* Motiva reports minor leak at Norco hydrocracker

* Motiva was expected to have repaired unit Monday (Adds details)

HOUSTON, March 16 (Reuters) - Motiva Enterprises LLC reported a leak in the hydrocracker at its 220,000 barrel-per-day refinery in Norco, Louisiana, on Monday, according to a source familiar with refinery operations on Tuesday.

"It was a very minor leak, very small," said the source.

Motiva was expected to have repaired the unit on Monday, possibly shutting down for the duration of the repair.

In a report filed with state regulators, the company said it had a release of benzene, hydrogen sulfide and propane on Saturday.

No further information or status was available, the Louisiana Department of Environmental Quality said.

Motiva is a joint venture between Royal Dutch Shell (RDSa.L) and Saudi Aramco.

A Shell spokesman said he couldn't comment on operations of units. (Reporting by Janet McGurty; editing by Julie Ingwersen)