Beginning in the fiscal year ending the thirtieth day of June, one thousand nine hundred ninety-two, and every second fiscal year thereafter, the Legislature shall cause to be performed a post audit and a performance audit for the intervening two-year period of the recipients of any grant or loan provided by the solid waste management board. The audit shall cover the disbursement of such loans or grants provided pursuant to section thirty, article four of this chapter, the use of such loans or grants by the recipient as well as all other appropriate subject matter.