909 Amberjack Ln CIV24-0001 Corson_ Drainage-Grading plan REV 07.03.2024VICINITY MAPSCALE: 3/32" = 1'-0"NWES
1.THE FINISHED GRADE AT HOUSE FOUNDATION SHALL PROVIDEPOSITIVE DRAINAGE AWAY FROM STRUCTURE AND SHALLSTART A MINIMUM OF 6" BELOW FINISHED FLOOR OF SLAB ORMINIMUM 6" BELOW PIER FOOTINGS FOR ELEVATED FLOOR.2.GRADING BELOW ELEVATED FLOOR SHALL PROVIDE POSITIVEDRAINAGE AWAY FROM HOUSE FOOTPRINT AND PREVENTPOOLING UNDER HOUSE.3.FINISHED CONSTRUCTION GRADING PATTERN SHALL CONVEYWATER RUN-OFF AWAY FROM ADJACENT PROPERTIES.4.ANY WETLAND AREA TO REMAIN UNDISTURBED DURING CONSTRUCTION.AMBERJACK LANE(60' R.O.W. PER PLAT VOL. 30, PG 60-60A)LOT 24BLOCK 4LOT 23LOT 22X X X 5' EASEMENT FOR DRAINAGE & UTILITIESLOT 12SEWSCALE: 1" = 20'FOUND 1" I.P.NO I.D.FOUND 1" I.P.NO I.D.FOUND 1" I.P.NO I.D.SET 5/8"IRON RODW/ CAPLB8499TBM NO. 1PK NAILELEV=8.70'NAVD88FOUND 1" I.P.NO I.D.13.00'75.00'27.00'5' B.L.5' B.L.25' B.L.N 66° 14' 56" W - 100.00' (M)N 66° 22' 27" W - 100.00' (C)N 23° 45' 04" E - 115.00' (M)N 23° 37' 33" E - 115.00' (C)S 44° 00' 34" E - 118.95' (M)S 44° 15' 40" E - 118.96' (C)CURVE TABLE#RADIUSARC LEN.C1120.00'49.60'LINE TABLE#BEARINGDISTANCEL1N 23° 45' 04" E21.78'C1(M)(C)(M)L1S 23° 37' 33" W21.78'(C)(M)(C)C1(M)(C)120.00'49.86'L1SET 5/8"IRON RODW/ CAPLB8499SET 5/8"IRON RODW/ CAPLB849910.6010.6010.6010.6010.6010.6010.6010.60PROPERTY LINEPROPERTY LINEPROPERTY LINEPRO
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E SWALE TO GRADESWALE TO GRADESWALE TO GRADESWALE TO GRADESWALE TO GRADEFLOW ARROWSINDICATE PROPOSEDDRAINAGE PATTERNSWALE AT STARTPOINT 1 FL= 10.10'POINT 3FL= 9.60'POINT 4FL= 9.35'SWALE TO OVERLANDFLOW INTO R.O.W.POINT 7 FL= 8.60'POINT 2FL= 9.85'POINT 6FL= 8.85'10.20POINT 5FL= 9.10'0.96% SLOPE MIN.FLOWLINE OF SWALE8.17BOC7.95GUT8.11GUT8.35BOC8.48BOC8.20GUT8.32GUT8.57BOC10.16NG10.24NG10.37NG10.66NG10.79NG10.86NG10.77NG10.80NG10.87NG10.83NG10.65NG10.47NG10.65NG10.47NG10.58NG10.43NG10.60NG10.84NG10.74NG11.02NGDRAINAGE AND FLOOD NOTES1FLOOD PLAIN DATA:THIS PROPERTY LIES WITHIN "ZONE X-UNSHADED" AS PER FLOOD INSURANCE MAP12031C0408J DATED: 11/02/2018 B.F.E.= N/AGENERAL NOTES:1.INSTALL SWPPP, STRIP AND REMOVE ALL SURFACE ORGANIC, TOPSOIL ANDUNSUITABLE MATERIALS FROM ALL BUILDING AND PAVING AREAS.DISCONNECT UTILITIES AND DEMO ANY EXISTING STRUCTURES PERCONTRACTOR REQUIREMENTS AND IN ACCORDANCE WITH LOCAL, STATE ANDFEDERAL REGULATIONS. THE TREE STUMPS INCLUDING ROOT SYSTEM SHALLBE REMOVED WHERE APPLICABLE.2.ESTABLISH POSITIVE SITE DRAINAGE, GRADING, INSTALL STORM DRAINAGESTRUCTURES IF REQUIRED.3.PROOF ROLL THE SUB-GRADE TO DETECT ANY WET, SOFT, OR PUMPINGAREAS, TREAT THESE AREAS WITH DRYING OR STABILIZING AGENTS ASNECESSARY OR REMOVE AND REPLACE THEM WITH SUITABLE FILL MATERIAL.4.COMPACT THE SUB-GRADE TO A MINIMUM OF NINETY FIVE (95%) PERCENT OFITS MAX. DRY DENSITY AS DETERMINED BY THE STANDARD PROCTORCOMPACTION TEST.5.EXCAVATED SOIL WILL BE REMOVED FROM THE SITE SO AS NOT TO ADD TOEXISTING SITE GROUND ELEVATIONS. IN ADDITION, EXISTING SITE GROUNDDRAINAGE PATTERNS WILL NOT BE CHANGED BY NEW CONSTRUCTION, NEWDRAINAGE AND CARRY IT TO THE FRONT STREET.6.SIDE YARDS WILL BE FINAL GRADED SO THAT SWALE EXISTS TO COLLECTWATER AWAY FROM THE FOUNDATION AND AWAY FROM THE PROPERTY LINE.CONTRACTOR WILL SURVEY ENTIRE SITE AND MAINTAIN RECORDS TO SHOWTHAT EXISTING ELEVATIONS DO NOT CHANGE.DRAINAGE NOTE:1.CONTACT CITY OF ATLANTIC BEACH STREET & DRAINAGE DEPT. 48 HOURSPRIOR TO COMMENCING CONSTRUCTION AND UPON COMPLETION FOR FINALINSPECTION.2.BUILDING, FENCES OR OTHER STRUCTURES SHALL NOT BE ERECTED WITHINRIGHT-OF-WAY, CITY EASEMENTS AND/OR PRIVATE EASEMENTS.3.THE DETENTION AND DRAINAGE FACILITIES SHALL BE MAINTAINED BY THEPROPERTY OWNER.4.ALL DRAINAGE FACILITIES SHALL HAVE EROSION CONTROL ESTABLISHEDUPON COMPLETION.5.SUBSURFACE DRAINAGE SYSTEMS ARE REQUIRED TO BE DRAINED IN 48HOURS.EXISTING NATURAL GROUNDPROPOSED GRADE ELEVATIONPROPOSED FILL AREASFL=XX.XXPROPOSED FLOWLINE ELEVATIONXX.XEXISTING TREEPROPOSED TREEEXTREME EVENT/ EXISTINGRUN-OFF FLOW ARROWSB.F.E. - BASE FLOOD ELEVATION (100 YEAR)D.F.E. - DESIGNATED FLOOD ELEVATION (500 YEAR)F.F.E. - FINISHED FLOOR ELEVATIONP.A.S.-PILING AND STRINGERS.O.G.-SLAB ON GRADEH.A.G.-HIGHEST ADJACENT GRADEL.A.G.-LOWEST ADJACENT GRADEF.L.- FLOW LINEH.B.-HIGH BANKXX.XX1VARIESTYPICAL SWALE SECTION2VARIES
SWALE @ MID POINTNTSN.G.F.F.E.HOUSESWALE FL.AVERAGE DEPTH OF SWALESWALE POINT 110.79 FT.10.58 FT.10.47 FT.SWALE POINTSEXISTING NGPROPOSED FLDEPTH10.84 FT.10.10 FT. 9.35 FT. 9.60 FT.9.85 FT.0.69 FT.1.23 FT.0.87 FT.0.99 FT.10.16 FT. 9.20 FT. 8.85 FT. 8.60 FT.1.31 FT.0.60 FT.AVERAGE DEPTH10.73 FT. 9.10 FT.1.63 FT.SWALE POINT 2SWALE POINT 3SWALE POINT 4SWALE POINT 5SWALE POINT 6SWALE POINT 71.05 FT.APPROXIMATE SWALE CUT VOLUMEWIDTH 976.50 CU.FT.VOLUME (CU.FT.)SWALETYPE12.00 FT.LENGTH 155.0 FT.AVERAGE DEPTH1.05 FT. 36.17 CU.YD.VOLUME (CU.YD.)DRAINAGE / GRADING PLAN3/32" = 1'-0"DHC-1.00LEGENDNOTESRevisions:PROJECT LOCATION OR ADDRESS:CLIENT:IEM, LLC#DATEDESCRIPTION OF CHANGECHECKED BY:SCALE:23-0237-03-DRAWN BY:PROJECT #:DATE:23-0237-03CCHNOTE: SIGNATURES VALID FOR ONE YEAR ONLY AFTER DATE OF SIGNATURESALL RIGHTS RESERVED. NO PART OF THIS DOCUMENT MAY BE REPRODUCED ORUTILIZED IN ANY FORM WITHOUT PRIOR WRITTEN AUTHORIZATION OF “COBALT”.0ISSUED FOR CONSTRUCTION909 AMBERJACK LANEATLANTIC BEACH, FL, 3223308/08/202308/08/2023THIS ITEM HAS BEENELECTRONICALLY SIGNED ANDSEALED BY CURTIS HAMPTONON THE DATE SPECIFIED.PRINTED COPIES OF THISDOCUMENT ARE NOTCONSIDERED SIGNED ANDSEALED AND THE SIGNATUREMUST BE VERIFIED ON ANYELECTRONIC COPIES.®phone: 409-354-5925 email: info@cobalt-engineering.comENGINEERING AND INSPECTIONS, LLC