HONOLULU — The state has submitted an environmental study for a multimillion-dollar project to widen a segment of Waikiki beach with sand pumped in from offshore.

The study published last week says the plan would have no significant environmental impact. The state is accepting public comment on the report through April 6.

The project would widen the beach from the Royal Hawaiian Hotel to the Kuhio Beach groin by about 40 feet.

The sand there has been eroding about 1-to-2 feet per year, leading water to rush into seawalls and a hotel restaurant bar at peak high tide.

The state has already set aside $1.5 million for the project, which is expected to cost about twice that.

Hotel owners and the Hawaii Tourism Authority are also expected to contribute funds.