As a condition to the issuance of a business license as required in the city code, all persons engaged in the business of installing or maintaining signs which involves, in whole or part, the erection, alteration, relocation, maintenance of a sign or other sign work in or over or immediately adjacent to a public right-of-way or public property so that a portion of the public right-of-way or public property is used or encroached upon by the sign installer, shall agree to hold harmless and indemnify the city, its officers, agents and employees, from any and all claims of negligence resulting from the erection, alteration, relocation, maintenance of a sign or other sign work insofar as this code has not specifically directed the placement of a sign.
(Title VII, Ch. 17, § 7.3)