Section 18.80.305. MCL compliance.

	(a)  The department will determine MCL compliance based on analytical results and other information compiled by the department.  
	(b)  The requirements for complying with the MCLs for inorganic chemicals are set out in 40 C.F.R. 141.23(i), adopted by reference in 18 AAC 80.010(a).  
	(c)  The requirements for complying with the MCLs for organic chemicals are set out in 40 C.F.R. 141.24(f) and (h), adopted by reference in 18 AAC 80.010(a).  
	(d)  The requirements for complying with the MCLs for disinfection byproducts are set out in 40 C.F.R. 141.133(b), adopted by reference in 18 AAC 80.010(a).  
	(e)  The requirements for complying with the MCLs for turbidity are set out in 40 C.F.R. 141.71(a)(2) and (c), 141.73(a) - (c)(2), and 141.74(a)(1), (b)(2), and (c)(1), adopted by reference in 18 AAC 80.010(a).  
	(f)  The department will determine compliance with the MCL for total coliform bacteria, set under 18 AAC 80.300(b)(4), as follows:  
		(1) for each month in which monitoring for coliforms is required, compliance will be based on the results of all routine and repeat samples that the department does not invalidate under 18 AAC 80.425;  
		(2) the department will count repeat samples toward the month in which the operator collected the routine sample that required the repeat sampling, regardless of the month in which the operator actually collected the repeat samples.  
	(g)  Compliance with an MCL for radionuclides set under 18 AAC 80.300(b)(5)  is achieved if the average of the analytical results of the four most recent consecutive quarterly samples, or the analytical result of a composite sample made up of the four most recent quarterly samples, does not exceed the MCL.  

Authorities

46.03.020;46.03.050;46.03.070;46.03.710;46.03.720

Notes

Authority

AS 46.03.020 AS 46.03.050 AS 46.03.070 AS 46.03.710 AS 46.03.720

History

Eff. 10/1/99, Register 151; am 9/28/2001, Register 159; am 1/11/2004, Register 169; am 1/11/2006, Register 177; am 4/24/2009, Register 190