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400 (400 -2- No more trenches shall be opened than can be properly and completely bacYfi.11ed in one (1) day. No gars than seven hundred (fCW ) of trench :hall be open at any i -r..! on any project unless authorized by the Town Engineer. One (1) traffic lane shall be kept open in safe condition at all times. Adequate warning and .regulatory signs and other safety measures sh;.11 be taken at all times to protect the public who may or must be present in the area where work is being performed. Complete closure of all traffic lanes may be made at the discretion of and in accordance with the plans for detours approved by the Town Engineer. Twenty-four (24) hours advance notice must be filed with t`.e Town Engineer and Town Clerk, stating the road to be closed, the limits and approximate duration of closure. Such agencies must also be notified immediately upon reopening of the road to emergency vehicles. Road Commissioner shall be supplied at all times with the names and telephone numbers of at least two (2) persons in charge of or responsible for the work subject to $ermit who can be reached for emergency work twenty-four (24) hours a day, seven (7) days a week. (2) Backfill. Backfill in all trenches shall be attained by any type of tamping capable of producing the compaction requirements, except that no water tamping will be permitted within two feet of finish grade. Backfill shall be compacted to a relative compaction of 95% for the entire deptb. of the trench. Untreated base material conforming to Sectior. 16 of the State Standard Specifications shall be placed along the entire trench section with a minimum thickness of 12 incb.er and compacted to 950/6 relative compaction. The City reserves the right to make as many compac- tion tests as it deems necessary to a certain conformance to the compaction requirements. The cost of such tests shall be borne by the persons performing the excavation in, along, and across roads. Upon completion of the backfill and road base, but prior to placing surfacing, the pavement adjacent to the work shall be thoroughly cleaned to the satisfaction of the Town Road Commissioner. A power broom shall be used if so required by the Road Commissioner. (3) Restoration of Pavement: After compaction tests have been made on the trench section to the satisfaction of the Road Commissioner, pavement shall be restored as follows: a. The untreated road base shall be given one (1) coat of SC -1 road oil applied at the rate of 0.25 gallons per squre yard. b. The entire trench shall be paved with hot plant mix surfacing 2%z inches in thickness after rolling. The plant mix shall conform to the requirements of Section 20 of the Standard State Specifications Type B mix. c. After the pavement has been rolled, the surface shall be treated with a fog seal coat applied at the rate of .05 gallons per square yard. (4) Miscellaneous. The City may, as a condition to granting an encroaclent permit, require a field inspectior. with representatives of both the applicant and the Road Commissioner's office. A description of the condition of the existing pavement and shoulders will be filed with the -2-