Stormwater facilities shall be installed at the time of, or prior to, development of adjacent property. Stormwater facilities must be designed by an engineer for any subdivision or large project (over 2 acres in size or over $500,000.00 in construction costs). If a project will place a burden on downstream facilities, the developer may be required to construct or improve such off site facilities. Stormwater facilities shall fully comply with state and federal environmental protection laws and regulations. (Ord. 670, 5-13-1997)