15A NCAC 02D .2608 NUMBER OF RUNS AND COMPLIANCE DETERMINATION Each test (excluding fuel samples) shall consist of three repetitions or runs of the applicable test method. For determining compliance with an applicable emission standard, the average of results of all repetitions applies. On a case-by-case basis, compliance may be determined using the arithmetic average of two run results if the Director determines that an unavoidable and unforeseeable event happened beyond the owner's or operator's or tester's control and that a third run could be not be completed. History Note: Authority G.S. 143-215.3(a)(1); 143-215.65; 143-215.66; 143-215.107(a)(5); Eff. June 1, 2008.