Prepared by the Engineers Joint Contract Documents Committee (EJCDC).

C-520 constitutes the basic terms between the owner and the contractor. This contract sets forth in detail the contractor's basic duties and responsibilities and covers such areas as bonds and insurance; progress and final payments; substantial completion; status of the engineer during construction; owner's responsibilities; subsurface and hidden site conditions; changes in the work, contract price, or contract time; contractor warranties and guarantees; correction or rejection of defective work; work suspension or termination; and dispute resolution.

The U.S. Department of Agriculture, Rural Utilities Service (RUS) has preapproved the use of certain standard EJCDC engineering and construction series documents for use in projects funded under the RUS Water and Waste Disposal program as described in RUS Bulletin1780-26. Please note that Bulletin 1780-26 was updated on 5/10/24 to incorporate The Build America, Buy America Act (BABAA) provisions of the Infrastructure Investment and Jobs Act (Pub. L. 117-58, § 70901-52).

EJCDC includes the American Society of Civil Engineers, the American Council of Engineering Companies, the National Society of Professional Engineers, and the participation of more than fifteen other professional engineering design, construction, owner, legal, and risk management organizations.

EJCDC documents are delivered in Microsoft Word format (file extension *.doc). Microsoft Word is required if you wish to edit the files.