3400 RIVERFRONT BLVD BASE FILE 2020-07-15

GENERAL NOTES (CONT.) SETTLEMENT PLATE MONITORING SETTLEMENT PLATE INSTALLATION PROTECTION AND MONITORING A.The Contractor shall coordinate with Riverfront Commercial LLC's Surveyor to perform during-construction A.This work shall consist of constructing settlement plates in accordance with the details shown in settlement plate surveys. The contractor shall allow the surveyor to survey the top of each pipe and the the Plans and these Specifications and as directed by the Engineer,monitoring the settlement plates adjacent ground surface at time interval specified herein or as directed by the Engineer in the event of to track ground settlement during and following the preload embankment construction,and removing damage/disturbance to the installation or to rectify erroneous survey information. portions of the settlement plate pipes on existing settlement plates. The settlement plate includes, but is not limited to,bedding sand,steel base,steel pipe,pipe flange and pipe couplers,pipe cap. B.The Contractor shall notify the Surveyor/Engineer when Settlement Plate installation is scheduled to begin. The Contractor shall coordinate with the surveyor during the installation process and assure access B.Settlement plates shall be installed at the locations noted on the plans in accordance with this during the installation period. specification. C.Where existing monitoring points only have a rebar,a new settlement plate will be placed and PROTECTION AND RESTORATION OF SETTLEMENT PLATES/REBAR MONITORING POINTS established adjacent to the existing rebar. The rebar shall no be moved or disturbed until the new settlement plate is in place,and surveyed. The Contractor shall make every effort to protect all settlement plates. If a settlement plate is damaged by the Contractor or Contractor's representative the Contractor shall pay a penalty of$2000 per damaged SETTLEMENT PLATE MATERIALS settlement plate. Damaged settlement plates shall be repaired,at the sole cost of the Contractor,by the A.Steel Pipe and Fittings end of the same day the damage occurred or an additional penalty of$500 per day there after until the 1.Steel pipes and pipe fittings shall be 3 inches in diameter,threaded,and be hot-dip galvanized settlement plate is repaired. inside and out and meet the requirements of ASTM A 53. B.Steel Bases 1.Steels bases shall consist of'/inch thick(minimum)steel plates measuring a minimum of 2 foot SILT FENCE by 2 foot square. A 3-inch flange should be welded to the center of each steel base. Contract or to install silt fence along entire perimeter of landfill boundary prior to start of construction. C.Bedding Sand 1.Bedding material for settlement plates shall be clean sand/gravel mixture free from organic matter; graded in accordance with ASTM C136 to a maximum size of 3 in.and a maximum of 3 percent HYDROSEEDING AND EROSION CONTROL passing the No.200 sieve in accordance with ASTM C117 and conforming to the gradation in the table below Contractor to coordinate with Owner for reporting any sediment discharge in accordance with the overall project NPDES permit. Contractor to develop Storm Water Pollution Prevention Plan for constructed ares in Settlement Plate Bedding Material accordance said NPDES permit. Contractor to maintain stormwater and sediment control Best Management US Standard Sieve SizePercent Passing by Weight Practices(BMPs)as necessary to prevent erosion and maintain side slopes. g in.square 100 3/8 in.square 70-100 Contractor to hydroseed all exposed earth areas post construction in accordance with the project SWPPPP U.S.No.4 55-100 and NPDES permit. U.S.No. 10 35-95 U.S.No.20 20-80 U.S.No.40 10-55 U.S.No.100 0-10 U.S.No.200 0-3 • All percentages are by weight SETTLEMENT PLATE ASSEMBLY A.Each settlement plate shall be installed on level firm ground,or on a level bedding sand pad if needed for stability,as detailed in the Plans. The steel pipe shall be securely threaded into the flange,so all vertical movement of the base will create an equal vertical movement in the steel pipe. As each section of the steel pipe is added to the settlement plate,the added section shall be securely attached to the section(s)below it using steel couplers,threaded to match the pipe threads. s s B.A steel cap,threaded to match the pipe threads,shall be threaded to the top of the upper most • pipe section and remain in place at all times,other than when being surveyed,to avoid debris falling into the pipe. C.The Contractor shall clearly mark each settlement plate location with red flagging and cones,as a • minimum,so they can be easily seen and avoided by equipment operators. EXTENDING SETTLEMENT PLATES A.Additional 4-to 7-foot long sections of pipe shall be added to the settlement plate raisers,per the project plans,as fill height comes within 3 feet of the top of the existing settlement plate raiser. • B.Care shall be taken to make sure that the settlement plate cap and additional red flagging is • placed on the new section of pipe before it is added to the settlement plate raiser. C.Additional pipe sections shall be connected through the use of 3-inch threaded couplers. < D.Legible marks shall be made on the outside of the settlement plate pipe at 1 foot increments from the base plate. Numeric distances shall be marked every 5 feet. Drawn By Date SCALE Drawing No. Perteet RIVERFRONT..COMMERCIAL LLC PD 3 Designed By Horiz 60K CY FILL FROM SIMPSON425.2624700 1141()0416411)00 000 M 2707 Colg/ � Checked By Vert / / Sheet No. Colbyanua.."ruck N/A /��/ /////)3 No. Date Revision By Appr. E — Washon Approved By Project Number EXHIBIT \ 2074D045 foTotal