An owner, an operator, and a person in charge of an OCS facility shall maintain a quality control program approved by the Department that establishes an adequate tracking mechanism and verification for OCS received by the facility. For each truckload of OCS received by an OCS facility, an owner, an operator, and a person in charge of the OCS facility shall: Collect a grab sample from the incoming truckload of OCS and combine not more than three grab samples to form one composite sample; Identify each composite sample by source, date received, and transporter; and Unless otherwise directed by the Department, properly maintain each composite sample at the OCS facility for a minimum of 90 days. At least every two weeks, an owner, an operator, and a person in charge of an OCS facility shall have a third-party testing laboratory approved by the Department analyze the composite samples collected in accordance with §B of this regulation as follows: The testing laboratory shall randomly select one composite sample and perform: An analysis for polychlorinated biphenyls in accordance with USEPA Test Method 8082A or another method approved by the Department; and Unless the generator of the OCS certified the OCS is excluded under 40 CFR §261.4(b)(10) and a TCLP analysis limited to metals was performed, a complete TCLP analysis in accordance with USEPA Test Method 1311 or another method approved by the Department; and The testing laboratory shall submit the results of the analyses conducted pursuant to §C(1) of this regulation directly to the Department. The Department may excuse an owner, an operator, and a person in charge of an OCS facility from the requirements under §C of this regulation if the owner, the operator, and the person in charge sends a letter to the Department certifying that no OCS was accepted during the relevant 2-week period.