30 C.F.R. § 828.12
(b) Air and water quality monitoring shall be conducted in accordance with monitoring programs approved by the regulatory authority as necessary according to appropriate Federal and State air and water quality standards.
(Pub. L. 95-87, 30 U.S.C. 1201 et seq.)
[44 FR 15455, Mar. 13, 1979, as amended at 48 FR 14822, Apr. 5, 1983; 48 FR 44781, Sept. 30, 1983]