15A NCAC 02L .0112. ANALYTICAL PROCEDURES

Tests or analytical procedures to determine compliance or noncompliance with the standards established in Rule .0202 of this Subchapter will be in accordance with:

(1)           The most sensitive of the following methods or procedures for substances where the standard is at or above the method detection limit value:

(a)           The most recent version of Standard Methods for the Examination of Water and Wastewater, published jointly by American Public Health Association, American Water Works Association and Water Pollution Control Federation;

(b)           Methods for Chemical Analysis of Water and Waste, 1979, U.S. Environmental Protection Agency publication number EPA‑600/4‑79‑020, as revised March 1983;

(c)           Test Methods for Evaluating Solid Wastes: Physical/Chemical Methods, 3rd Edition, 1986, U.S. Environmental Protection Agency publication number SW‑846;

(d)           Test Procedures for the Analysis of Pollutants Under the Clean Water Act, Federal Register Vol. 49, No. 209, 40 CFR Part 136, October 26, 1984;

(e)           Methods or procedures approved by letter from the Director upon application by the regulated source; or

(2)           A method or procedure approved by the Director for substances where the standard is less than the method detection limit value.

 

History Note:        Authority G.S. 143‑215.3(a)(1); 143B‑282;

Eff. August 1, 1989;

Amended Eff. October 1, 1993.