CASTRO VALLEY -- Castro Valley High School rolled out compost bins this week to start collecting lunchtime food scraps.

"This was a student-led effort," said Nicholas Whitaker, leadership/activities director at the school.

Last spring, students from the Leadership class and Smart Energy Club did a waste audit at the school with the help of the Castro Valley Sanitary District.

"We took garbage from two days, took everything out of the bags and sorted it. We found that only 20 percent of what was thrown away was trash," Whitaker said.

About 20 compost bins were put in the cafeteria and courtyard beginning Wednesday. Volunteers, who dubbed themselves the "Compost Squad," are monitoring the bins for the next couple of weeks to help students figure out what to recycle, what to compost and what to toss.

Based on the audit, if Castro Valley High were to recycle or compost everything possible, the school could knock $30,000 off its garbage bill, which was $50,000 annually before last year. Thanks to recycling and kitchen composting efforts that started this past year, the school already has saved $10,000 a year, said Jordan Figueiredo of Castro Valley Sanitary District. Castro Valley High was certified as a green ribbon school in June.

"Our goal is to build a culture of being more environmentally friendly," Whitaker said.

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