Provides that contracts for construction or maintenance, or for labor or materials used in any improvement authorized by a flood control district, may only be awarded through a public bidding process Notices calling for sealed bid proposals must be published in at least one newspaper of general circulation in the district. The notices must be published at least once fourteen or more days before the deadline for submitting proposals; and bid proposals must be in writing, must be filed at the location specified in the notice, and must be opened and read in public.   Official Text and Analysis.