(1) The department shall:

(a) Maintain a technical advisory committee to advise the department regarding:

(i) OSS design and siting;

(ii) Public domain technologies and recommended standards and guidance for their use; and

(iii) Testing and design standards used for proprietary product registration and recommended standards and guidance for use of proprietary products.

(b) Select members for the technical advisory committee with technical or scientific knowledge applicable to OSS from agencies, professions, and organizations including:

(i) Local health departments;

(ii) Engineering firms;

(iii) The department of ecology;

(iv) Land sales, development and building industries;

(v) Public sewer utilities;

(vi) On-site sewage system design and installation firms;

(vii) Environmental organizations;

(viii) University/college academic communities;

(ix) On-site sewage system or related product manufacturers; and

(x) Other interested organizations or groups.

(c) Convene meetings as needed.

(2) The department may have a representative on the technical advisory committee.