North Carolina General Statutes Chapter 130A. Public Health § 130A-63. Engineers to provide plans and supervise work; bids

(a) The sanitary district board shall retain engineers licensed by this State to provide detailed plans and specifications and to supervise the work undertaken by the district. The work or any portion of the work may be done by the sanitary district board by purchasing the material and letting a contract for the work or by letting a contract for furnishing all the materials and doing the work.

(b) All contracts for work performed for construction or repair and for the purchase of materials by sanitary districts shall be in accordance with the provisions of Article 8, Chapter 143 of the General Statutes which are applicable to counties and municipal corporations.

(c) All work done shall be in accordance with the plans and specifications prepared by the engineers in conformity with the plan adopted by the sanitary district board.