A bill to ban Kaua'i retail stores from giving out single-use plastic bags has been shelved again.

The law would require stores to use paper or biodegradable plastic bags. It would fine them $100 for the first violation, $200 for the second in the same year and $500 for each subsequent violation in the same year.

The county council deferred the bill for two weeks after officials raised concerns over how the law would be implemented and enforced. County Engineer Donald Fujimoto questioned how his department would conduct chemical testing to determine if certain biodegradable bags met the law's standards.

The council had received 92 written testimonies in support of the bill and 11 opposed.