PURPOSE: The purpose of this regulation is to establish guidelines for standards of inspection, sampling and analysis of treated timber products.

Editor’s Note: The secretary of state has determined that the publication of this rule in its entirety would be unduly cumbersome or expensive. The entire text of the material referenced has been filed with the secretary of state. This material may be found at the Office of the Secretary of State or at the headquarters of the agency and is available to any interested person at a cost established by state law.

1. (1) The standards for inspection procedures shall be in accordance with the AWPA Standard M2-Inspection of Treated Timber Products as published in the AWPA Book of Standards (1985).

2. (2) The standards for sampling and quality control procedures shall be in accordance with the American Wood Preservers’ Association (AWPA) and American Wood Preservers’ Bureau (AWPB) except that—

   1. (A) Any core samples taken during an inspection shall consist of one (1) lot. A lot for inspection at the treating plant will normally be a retort charge. A lot for inspection at plant storage yards or at sales yards where the final purchase has not been made, shall be that material available at the time and place of inspection which contains products from any one (1) treating plant and shall contain only one (1) species and one (1) preservative treatment. Lumber, plywood and posts shall not be mixed in one (1) inspection lot.
   2. (B) The number of core samples taken during inspection of coniferous, softwood species shall be twenty (20) per lot. The samples shall be selected randomly from the lot being inspected;
   3. (C) The number of core samples taken during inspection of deciduous, hardwood species shall be eight (8) per lot. The samples shall be randomly selected from the lot being inspected.
   4. (D) The schedule of frequency for tests by the Department of Agriculture inspectors or agents shall consist of four (4) test levels. In the event the treated timber producer has not gained compliance with the required standards at the final test level, the director may suspend or revoke the license of the treated timber producer as provided under section 280.040.3.
3. (3) The standards for methods of analysis for all type preservatives used shall be in accordance with the AWPA Standard A-Analysis Methods, as published in the AWPA Book of Standards (1985).

AUTHORITY: section 280.050, RSMo 1986.* Original rule filed Oct. 10, 1980, effective Feb. 1, 1981. Amended: Filed Sept. 12, 1984, effective Jan. 1, 1985. Amended: Filed Dec. 16, 1985, effective March 13, 1986. *Original authority: 280.050, RSMo 1961, amended 1979, 1984, 1993, 1995.