When a bond is used to secure the faithful performance of the agreement for subdivision improvements it shall be in substantially the same form as provided for in Section 66499.1 of the Map Act, subject to review by the city attorney and approval by the city council. The form of bond for the security of laborers and materialmen shall be in substantially the same form as provided for in Section 66499.2 of the Map Act subject to review by the city attorney and approval by the city council. Appropriate modifications shall be made in such form if the bond is being furnished for the performance of an act not provided for by agreement. All bonds shall be furnished by a surety company authorized to write the same in the state of California. (Ord. 617 §2 (Exh. A), 2011; Ord. 474, 2002).