(1) Professional service corporations lawfully organized under chapter 18.100 RCW are not required to obtain certificates of authorization under this chapter.

(2) All engineering services provided by a professional service corporation, must be provided by a duly licensed professional engineer pursuant to RCW 18.100.060.

(3) A registered engineer may own stock in and render individual professional services through only one professional service corporation at any time pursuant to RCW 18.100.050(2).

(4) The standards of professional conduct for engineers under chapter 18.43 RCW and this Title 196 WAC apply to any professional services performed by a PSC or its individual member licensees pursuant to RCW 18.100.070.

(5) A PSC that performs engineering services must comply with chapters 18.43 and 18.100 RCW.