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GENERAL PROVISIONS
<br />GOVERNING INSTALLAnON OF SUBSURFACE STRUCTURES AND PIPELIN.;S WITJIlN COUNTY ROAD RIGHTS-OF-WA Y
<br />PUBLIC CONVENIENO;AND SAFETY:
<br />A.Before obstructing any private driveway entrance or County road traveled way with a trench,spoil bank,equipment or other barrier pennitted for any
<br />prolonged period of lime,the Permittee shall notify the known users orthe respective thoroughfarc(s)involved,and shall provide access for vehicular and
<br />pedestrian tmffic to and from the road.
<br />I.Unless otherwise pcmlittcd,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 10 public traffic during working hours in a smooth and safe riding condition(s).Two lanes shall be open aner working hours.
<br />2.In cases where road closure is pennitted,the pennission to close the road will be granted under the condition that UlePennittce notify the
<br />following persons and/or agencies of the time,the period of closure,and the detour routc at least twenty~four (24)hours prior to said road closure.
<br />a.The County of San Joaquin Public Works Department d.The local fire district
<br />b.The County of San Joaquin Sheriffs Office e.The local school district
<br />c.The local postal service (TIle local residents involved
<br />B.Should hazardous conditions relative to thc installation operations warrant flagmen,as many capable flagmen as may be necessary shall be provided by the
<br />Pennittee 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 Pennittee for the adequate warning and convenience of the public,with
<br />particular attention to be taken in this regard after daTie.
<br />D.Any excess dirt and/or debris which might be a hazard to either automobile or pedestrian traffic,uncontrollable by lights,signs and barricadcs,shall be
<br />removcd from the jobsite daily.
<br />STRUCTURES:
<br />A.Walls of stnlctures shall be such quality and strength that they will rcsist all pressures and will not crack or bc dcfonned in such a way as to create a hazard
<br />or maintenance problem at any time.Thereforc,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 />I.For concrete pipe up to and including thirty-three inches (33")inside diametcr,extra strength concrete conforming to AASHTO Designation M
<br />170M.
<br />2.For concrete pipe thirty-six inches (36")inside diameter and larger,reinforced concrete pipe confonning to AASHTO Designation M 170M Class
<br />111.
<br />3.Plastic pipe confonning to AASHTO Designation M294.
<br />B.All concrete pipe joints with County road rights-of-way shall be scaled against leakage and/or infiltration with rubbcr gasket in conformance with Section
<br />65-1 :06 of the California Standard Specifications,or with other methods as may be pennitted 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 ~l1ow minimum coverage of thirty inchcs (30")to the
<br />centerline of the roadways and twelve inches (12")at the botioms 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 thc 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)from surveyed centerline of road right-of-way,not from right-of-way
<br />(border)lincs.
<br />REPAIRS OF THE COUNTY RIGHT-OF-WAY:
<br />J.
<br />J.
<br />D.
<br />H.
<br />G.
<br />A.B.
<br />E.
<br />F.
<br />c.
<br />All excavations shall bc backfilled and compacted immediately after work therein has been completed.
<br />Trenched shall not be leO open farther than 300 feet in advance of pipe laying operations,or 200 feet to the rcaI'thereof,unless otherwise pemlitted by the
<br />Engineer.
<br />Unless othen.•••ise pennitted under the Special Provisions,backfill shall be placed and mechanically compacted in such a manner that thc relative compaction
<br />throughout the cntire fill within the County road right-of-way shall confonn to the percentages of compaction as shown on the Trench detail.
<br />Backfill material shall be placed in horizontal unifornl 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 />No portion of the excavation(s)shall be compacted by ponding or jetting unless a maintenance bond is provided.
<br />Gravel backfill material shall be utilized only where specifically so staled on the face of the permit.11shall be compacted by means of a high-frequcncy
<br />internal vibrator,the compactor to be a size and type approved by the Engineer.Points of compaction shall not bc greatcr than 18"centers and to thc full
<br />depth of the lift.
<br />All pavements,curbs,guttcrs,sidewalks,borrow ditches,pipes,head walls,road signs,trees,shrubbery,and/or other pennanent 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 />AI!surfacing matcrials of roadways and driveway approaches cut or damaged by or as a result of construction operations,shall be replaced \vithin ONE
<br />WEEK following the backfilling of excavation,weather pennitting.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 shall confonn to the quality and gradation requirements for Type "B"one-half inch(ll2)
<br />maximum aggregate,coarse or medium gradation as specified in Section 39 of tile California Standard Specifications.The bituminous binder to
<br />be mixed with mineral aggregate shall be paving asphalt having (Grade PO 64-10),unless otherwise directed by the Engineer.Placemcnt of
<br />asphalt concrcte surfacing shall confonn to the applicable provisions of Section 39 of the California Standard Specifications.
<br />2.Aggregate Base:Combined mincral aggrcgates shall confonn to the quality and the grading for three-quarter inch (3/4")ma.'Cimum size
<br />aggregate Class 2 Aggregate Base specified -inSection 26 of the California Standard Specifications.
<br />Before acceptance of repairs to the County road rights-of-way,all unsightly and detrimental dirt.dust and/or debris shall be removed llnd the construction
<br />areas leO in a neat and presentable condition(s).
<br />1.lfneeessary,County road travelcd way and driveway pavements shall be washed with water to remove dirt and dust
<br />2.Driveway approaches and .field entrnn~e pavements damaged .bycquipment or spoil banks shall be repaired as djrect~d by the Engineer.
<br />Upon.request by th.eCounty,any seUlem~nt,saggmg of surface,or crackmg ofpavcment shall be repaired immediately by and at the sole expense of thePennlttecfornpenodofoneyearfollowmgacceptanceofthework.
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