All material and workmanship on the following shall conform with specifications on file in the public works department:
A. All brick pavement that has been opened shall be replaced with a six-inch concrete base and a sand cushion, then replace the brick surface course and seal the joints with emulsified asphaltic compound.
B. All brick pavement with an asphaltic surface course that has been opened shall be replaced with six-inch concrete base and three inches of asphaltic concrete; provided, when there is not an asphaltic plant operating in or near the City, the opening may be replaced with nine inches of concrete upon receiving permission from the public works director.
C. Concrete pavement that has been opened shall be replaced with concrete of the same thickness as that removed, but in no case shall it be less than six inches in thickness.
D. Bituminous surfaced pavement with a concrete base that has been opened shall be replaced with a six-inch concrete base and surfaced with at least two inches of asphaltic concrete. When there is not an asphaltic plant operating in or near the City, the opening may be replaced with eight inches of concrete by receiving permission from the city engineer.
E. Bituminous surfaced pavement without a concrete base that has been opened shall be replaced with six inches of asphaltic concrete or six inches of concrete upon receiving permission from the public works director.