(a) There is established a grant program, to be administered by DPW, to financially assist a business or nonprofit organization in the lease or purchase of an on-site organic processing system, such as an in-vessel composter or aerobic digester. (b) Grants shall be awarded on a competitive basis. (c) DPW may audit the accounts of a grantee receiving a grant under this section up to 3 years following the award of the grant.