1. Notify the road commissioner at least forty-eight hours, exclusive of Saturdays, Sundays and legal holidays, before starting any permit work;

2. Keep his permit, or a copy thereof, at the site of the permit work at all times when he is actually engaged in work thereat, and exhibit it to the road commissioner, or his representative, or any peace officer, upon demand;

3. Promptly remove all refuse, debris, equipment and excess material from the site of the permit work upon its completion, and leave the premises in as presentable a condition as before the work started;

4. Place and maintain suitable warning lights, signs, barriers, devices or flagmen, which shall be of the types specified pursuant to Section 21400 of the California Vehicle Code;

5. Deliver to the road commissioner, upon his demand, after the completion of any permit work, a plan or drawing showing locations and details of permitted encroachments and connections, if any, to existing structures where such encroachments and connections differ substantially from any plats and diagrams submitted with the application for a permit;

6. In all cases where he has disturbed the existing surface of a county highway, replace, repair or restore such highway in accordance with the terms of his permit. In case his permit contains no such terms, then he shall do such replacing, repairing or restoring at his own expense promptly upon completion of his permit work, in a good and workmanlike manner as directed by the applicable provisions of this chapter, to as good condition as before the permit work started; provided, however, that if the surface which was disturbed was a bituminous-surfaced roadway, such surface shall be replaced, repaired or restored with not less than one and one-half inches, compacted, in thickness, of asphaltic concrete surfacing, over a minimum of six inches, compacted, in depth, of aggregate base material of a type approved by the road commissioner;

7. Comply with all of the terms and conditions of his permit;

8. Comply with all construction standards and methods specified in this chapter;

9. Store, place or deposit no material within five feet from the edge of the pavement or traveled way or within the shoulder line, where the shoulders are wider than five feet, of any county highway, without the prior approval of the road commissioner;

10. Diligently pursue the permit work in such a way as not to cause an unreasonable interference or inconvenience to the traveling public.