5 GCA § 5210: Methods of Source Selection.

(a) Unless otherwise authorized by law, all Guam contracts shall be awarded by competitive sealed bidding, pursuant to § 5211 of this Article, except for the procurement of professional services and except as provided in:

(1) Section 5212 of this Article; [see note below]

(2) Section 5213 of this Article;

(3) Section 5214 of this Article;

(4) Section 5215 of this Article;

(5) Section 5216 of this Article for services specified in § 5121 of this Chapter; or

(6) Section 5217 of this Article.

(b) Nothing in this Section requiring competitive bidding shall prohibit the development of specifications which require compatibility with existing supplies, equipment or data processing systems.