1. A detailed sketch showing proposed work in relation to the public right-of-way, other existing utilities and street improvements;

2. A certificate of liability insurance naming city as an additional insured with minimum limits of liability stated in the most recent edition of Standard Specifications for Municipal Public Works Construction, published by the Washington chapter of the American Public Works Association (APWA) or as otherwise required by the city; provided, however, that a self-insured public utility may submit a letter of responsibility in lieu of a certificate of liability insurance. Such letter of responsibility shall be approved as to form by the city attorney prior to acceptance by the city;

3. A statement regarding coordination with other utilities as to location of work so as not to interfere with those utilities.