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GENERAL PROVISIONS <br />GOVERNING INSTALLATION OF SUBSURFACE STRUCTURES AND PIPELINES WITHIN COUNTY ROAD RIGHTS-OF-WAY <br />PUBLIC CONVENIENCE AND SAFETY: <br />A.Before obstructing any private driveway entrance or County road traveled way with a trench,spoil bank,equipment or other barrier permitted for any <br />prolonged period of time,the Pcnnittee shall notify the known users of the respective thoroughfare(s)involved,and shall provide access for vehicular and <br />pedestrian traffic to and from the road. <br />1.Unless otherwise pem1itted,all work shall be conducted in such a manner that no less than one lane of the existing County road traveled way will <br />be maintained open to public traffic during working hours in a smooth and safe riding condition(s).Two lanes shall be open after working hours. <br />2.In cases where road closure is permitted,the permission to close the road will be granted under the condition that the Pemlittee notifY the <br />following persons and/or agencies of the time,the period of closure,and the detour route at least twenty-four (24)hours prior to said road closure. <br />a.The County of San Joaquin Public Works Department d.TIle local fire district <br />b.The County of San Joaquin Sheriffs Office e.The local school district <br />c.The local postal service f.The local residents involvcd <br />B.Should hazardous conditions relative to the installation operations warrant flagmen,as many capable flagmen as may be necessary shall be provided by the <br />Permittee and stationed in advance of work to warn and direct traffic. <br />C.Lights,signs and barricades shall be furnished,erected and maintained by the Permittee for the adequate warning and convenience of the public,with <br />particular attention to be taken in this regard after dark. <br />D.Any excess dirt and/or debris which might be a hazard to either automobile or pedestrian traffic,uncontrollable by lights,signs and barricades,shall be <br />removed from the jobsite daily. <br />STRUCTURES: <br />A.Walls of structures shall be such quality and strength that they will resist all pressures and will not crack or be deformed in such a way as to create a hazard <br />or maintenance problem at any time.Therefore,the minimum structural requirements for concrete pipe placed under county road rights-of-way shall <br />confonn to the following American Association of State Highway and transportation Officials (AASHTO)designations. <br />1.For concret~pipe up to and including 1;1irty<hrec inches (33"")inside dilln,der,~xtro.strength concrete conforming to AASHTO Designation ;;'1 <br />170M. <br />2.For concrete pipe thirty-six inches (36")inside diametcr and largcr,reinforced concrete pipe conforming to AASH1'O Designation M 170M Class <br />lIL <br />3.Plastic pipe conforming to AASHTO Designation M294. <br />B.All concrete pipe joints with County road rights-of-way shaII be sealed against leakage and/or infiltration with rubber gasket in conformance with Section <br />65-1 :06 of the California Standard Specifications,or with other methods as may be permitted under the Special Provisions. <br />C.Cast-in-place concrete pipe,vitrified clay pipe,spiral welded steel pipe,or corrugated aluminum alloy pipe shall not be installed within the County road <br />rights-of-way unless specifically so stated in the Special Provisions,and only under the conditions as provided. <br />D.All structures to be buried within the County rights-of-way shall be set at such elevations as to allow minimum coverage of thirty inches (30")to the <br />centerline of the roadways and twelve inches (12")at the bottoms of borrow ditches each side of the roadways.The depths of structures shall be established <br />below a flat plane extending across the rights-of-way,no part of which shall extend above the elevations stated above;manholes,lampholes,valves,etc.not <br />included.Future surface elevations shall be anticipated as nearly as possible and structure elevations shall be established for future adjustments accordingly. <br />E.The County hereby reserves the right to specify in the Special Provisions the gage and surface treatment of any galvanized corrugated metal pipe that is to be <br />installed. <br />F.All longitudinal utility facilities arc to be established (and dimensioned on sketches)trom surveyed centerline of road right.of-way,not from right-of-way <br />(border)lines. <br />REPAIRS OF THE COUNTY RIGHT-OF-WAY: <br />A.All excavations shall be backfilled and compacted immediately after work therein has been completed. <br />B,Trenched shall not be left open farther than 300 feet in advance of pipe laying operations,or 200 feet to the rear thereof,unless othenvise permitted by the <br />Engineer. <br />C.Unless othenvise permitted under the Special Provisions,backfill shall be placed and mechanically compacted in such a manner that the relative compaction <br />throughout the entire fill within the County road right-of-way shall conform to the percentages of compaction as shown on the Trench detaiL <br />D.Backfill material shall be placed in horizontal unifonn layers not to exceed in thickness,before compaction,0.67 foot in the bedding region,one -foot where <br />90%compaction is required,and two-feet where 80%compaction is required. <br />E.No portion of the excavation(s)shall be compacted by ponding or jetting unless a maintenance bond is provided. <br />F.Gravel backfill material shall bc utilized only where specifically so stated on the face of the permit.It shall be compacted by means of a high-frequency <br />internal vibrator,the compactor to be a sizc and type approved by the Engineer.Points of compaction shall not be greater than 18"centers and to the full <br />depth ofthe lift <br />G.All pavements,curbs,gutters,sidewalks,borrow ditches,pipes,head walls,road signs,trees,shrubbery,and/or other permanent road facilities impaired by <br />or as a result of construction operations at the construction site(s)occupied by materials and/or equipment,shall be restored immediately upon backfilling of <br />the excavation to the original grades and cross sections,and to a condition as good as,or better than existing prior to construction. <br />B.All surfacing materials of roadways and driveway approaches cut or damaged by or as a result of construction operations,shall be replaced within ONE <br />WEEK following the backfilling of excavation,weather permitting,with compacted layers of surfacing materials at least as thick as the existing,and no less <br />than two inches (2")of asphalt concrete over six inches (6")of aggregate base,both as specified below. <br />1.Asphalt Concrete:Combined mineral aggregate shaII conform to the quality and gradation requirements [or Type "8"one-half inch(ll2) <br />maximum aggregate,coarse or medium gradation as specified in Section 39 ofthe Califomia Standard Specifications.The bituminous binder to <br />be mixed with mineral aggregate shall be paving asphalt having (Grade PG 64-10),unless otherwise directed by the Engineer.Placement of <br />asphalt concrete surfacing shall conform to the applicable provisions of Section 39 of the California Standard Specifications. <br />2.Aggregate Base:Combined mineral aggregates shall conform to the quality and the grading for three-quarter inch (3/4")maximum size <br />aggregate Class 2 Aggregate Base specified in Section 26 ofthe Califomia Standard Specifications. <br />1.Before acceptance of repairs to the County road rights-of-way,all unsightly and detrimental dirt,dust and/or debris shall be removed and the construction <br />areas left in a neat and presentable condition(s). <br />1.If necessary,County road traveled way and driveway pavements shaII be \vashed with water to remove dirt and dust <br />2.Driveway approaches and field entrance pavements damaged by equipment or spoil banks shall be repaired as directed by the Engineer. <br />.I.Upon request by the County,any settlement,sagging of surface,or cracking of pavement shall be repaired immediately by and at the sole expense of the <br />Pennittec for a period of one year following acceptance of the work. <br />X:\ENCROACHMENTS\Gencral ProviSIOns (Encroachment Pcrmits)\Winter Weather Provisions don: