ome of these additional conditions, which may be imposed in the ordinance establishing the districts or by the Zoning Administrator in determining the drilling site requirements, and which may be applied by reference, are as follows: (Para. Amended by Ord. No. 173,268, Eff. 7/1/00, Oper. 7/1/00.) 1. That all pumping units established in said district shall be installed in pits so that no parts thereof will be above the surface of the ground. 2. That all oil produced in said district shall be carried away by pipe lines or, if stored in said district, shall be stored in underground tanks so constructed that no portion thereof will be above the surface of the ground. 3. That the operator of any well or wells in the district shall post in the Office of Zoning Administration a $5,000 corporate surety bond conditioned upon the faithful performance of all provisions of this article and any conditions prescribed by a Zoning Administrator. No extension of time that may be granted by a Zoning Administrator, or change of specifications or requirements that may be approved or required by a Zoning Administrator or by any other officer or department of the City, or other alteration, modification or waiver affecting any of the obligations of the grantee made by any City authority shall be deemed to exonerate either the grantee or the surety on any bond posted as required in this article. (Amended by Ord. No. 173,268, Eff. 7/1/00, Oper. 7/1/00.) 4. That the operators shall remove the derrick from each well within thirty (30) days after the drilling of said well has been completed, and thereafter, when necessary, such completed wells shall be serviced by portable derricks. 5. That the drilling site shall be fenced or landscaped as prescribed by the Zoning Administrator. (Amended by Ord. No. 173,268, Eff. 7/1/00, Oper. 7/1/00.) 6. (None) 7. That, except in case of emergency, no materials, equipment, tools or pipe used for either drilling or production operations shall be delivered to or removed from the drilling site, except between the hours of 8:00 a.m. and 8:00 p.m. of any day. 8. That adequate fire fighting apparatus and supplies, approved by the Fire Department, shall be maintained on the drilling site at all times during drilling and production operations. 9.