Flip the Lid Audits July 12, 2022 Email To be in compliance with SB 1383, residents and businesses must place compostable and recyclable materials in the appropriate carts. SB 1383 regulations require that we conduct periodic “route reviews” of customer carts. These are visual checks of the landfill, recycling, and compost carts to see if customers are putting materials into the correct cart. So, you may see our staff conducting these “flip-the-lid” visits in your neighborhood – we’ll then be following up regarding any contamination issues and providing educational assistance as necessary.