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Home My WebLink AboutSW6230606_Plansheet - SCM Detail_20230906 wthink, design, build H, PROPOSED SWALE ID#2 NOTE: DAM EMBANKMENT CONSTRUCTION STANDARDS LU (1' BOTTOM WIDTH, 3:1 SIDE SLOPE) LINED WITH - BIORETENTION TO BE GRASS w 1. CONTROLLED FILL, AS SPECIFIED BY THE GEOTECHNICAL I co NORTH AMERICAN GREEN C125 ERONET OR � � � � � � � 1 LINED WITH BERMUDA SOD. ENGINEER, IN THE DAM EMBANKMENT SHALL BE PLACED N 6-INCH co EQUIVALENT TYP. SHADED AREA \ PLANTS AND MULCH NOT LOOSE LAYERS (3-INCH LOOSE LAYERS WITHIN 3-FEET OF EITHER = H, (FOR INSTALLATVN DETAb,, SEE SHEET C7.0) APPLICABLE SIDE OF THE PRINCIPAL SPILLWAY PIPE TO A DEPTH OF 2-FEET (D OVER THE PIPE) AND SHALL BE COMPACTED TO A DENSITY OF NO LESS THAN 95% OF THE STANDARD PROCTOR MAXIMUM DENSITY AT RIP-RAP AS FOREBAY O'X18" •(1, I A MOISTURE CONTENT OF + OR -TWO PERCENTAGE POINTS OF Q RIP- tik �A", THE OPTIMUM MOISTURE CONTENT IN ACCORDANCE WITH ASTM ci H, - _H,LINING 1 CONCRETE 4,000 PSI (MIN) D698. J 1 2. ALL VISIBLE ORGANIC DEBRIS SUCH AS ROOTS AND LIMBS EROSION CONTROL LEGEND D CA SHALL BE REMOVED FROM THE FILL MATERIAL PRIOR TO COMPACTION TO THE REQUIRED DENSITY. SOILS WITH ORGANIC ��.• �N F�� . WASHED BERMUDA SOD- co ,,,1 MATTER CONTENT EXCEEDING 5% BY WEIGHT SHALL NOT BE USED. SIDES AI� BOTTOly,1 OF BIQ�ETENTI0�1 H, H, H, H H, STONES GREATER THAN 3-INCH IN ANY DIRECTION SHALL BE pFESS/0 TEMPORARY SILT FENCE (SEE SHEET C7.0) REMOVED FROM THE FILL PRIOR TO COMPACTION. ) c5 Q� 9 SOD SHOULD NOT BE GROWN IN SOIL 3. FILL MATERIAL PLACED AT DENSITIES LOWER THAN SPECIFIED W�H AN IIv�PERMEABL�F CLAY LAYER. \ / I H, TEMPORARY TREE PROTECTION FENCE (SEE SHEET C7.0) MINIMUM DENSITIES OR AT MOISTURE CONTENTS OUTSIDE THE - SEAL l _ N SPECIFIED RANGES OR OTHERWISE NOT CONFORMING TO SPECIFIED m = 24438 I = REQUIREMENTS SHALL BE REMOVED AND REPLACED WITH = (� \ LIMITS OF DISTURBANCE ACCEPTABLE MATERIALS. 0 N 4. ANY FILL LAYER THAT IS SMOOTH DRUM ROLLED TO REDUCE `S' / ✓ li MOISTURE PENETRATION DURING A STORM EVENT SHALL BE N ��`` o ` PROPERLY SCARIFIED PRIOR TO THE PLACEMENT OF THE NEXT ''��ii R P. P� ��``` SOIL LIFT. "�nn�nnunwua��"`` 5. ONSITE STORMWATER SHALL BE CONTINUOUSLY CONTROLLED THROUGHOUT CONSTRUCTION AND THE PLACEMENT OF = CONTROLLED FILL. 6. FOUNDATION AREAS MAY REQUIRE UNDERCUTTING OF } COMPRESSIBLE AND OR UNSUITABLE SOILS IN ADDITION TO THAT a INDICATED ON THE PLANS. ALL SUCH UNDERCUTTING SHALL BE PERFORMED AT THE DISCRETION OF THE GEOTECHNICAL ENGINEER AND SHALL BE MONITORED AND DOCUMENTED. IN NO CASE SHALL is" RCP (INV 276.85 ) THERE BE AN ATTEMPT TO STABILIZE ANY PORTIONS OF THE FOUNDATION SOILS WITH CRUSHED STONE. 7. TREATMENT OF SEEPAGE AREAS, SUBGRADE PREPARATION, E FOUNDATION DEWATERING AND ROCK FOUNDATION PREPARATION c� X r. (I.E., TREATMENT WITH SLUSH GROUTING, DENTAL CONCRETE, ETC.) 1 C fa MAY BE REQUIRED AT THE DISCRETION OF THE GEOTECHNICAL N / \ ENGINEER. ALL SUCH ACTIVITIES SHALL BE CLOSELY MONITORED cu / s AND DOCUMENTED BY THE GEOTECHNICAL ENGINEER. dU W 8. FILL ADJACENT TO THE RISER AND PRINCIPAL SPILLWAY PIPE -5 c: SHALL BE PLACED SO THAT LIFTS ARE AT THE SAME LEVEL ON v / Nl BOTH SIDES OF THE STRUCTURES. (3' LIFTS ARE REQUIRED) 6° ` �� ( 9. EARTHWORK COMPACTION WITHIN 3 FEET OF ANY STRUCTURES 0 - \ .50 �/ `N� �It SHALL BE ACCOMPLISHED BY MEANS OF HAND TAMPERS, MANUALLY z co � rn PSG' DIRECTED POWER TAMPERS OR PLATE COMPACTORS OR MINIATURE o SELF-PROPELLED ROLLERS. 7 o 10. COMPACTION BY MEANS OF DROP WEIGHTS FROM A CRANE OR � HOIST SHALL NOT BE PERMITTED. 0 1 1. HEAVY EQUIPMENT SHALL NOT BE ALLOWED TO PASS OVER -a' J J� (I ORIFICE FOR UNDERDRAIN CAST-IN-PLACE STRUCTURES UNTIL ADEQUATE CURING TIME , rn E \ \ (INV. t 276.90) m -.L I HAS ELAPSED. 0 X ILL 12. TO RE-ESTABLISH VEGETATION AFTER CONSTRUCTION, A 2- TO 1 0, " NEW CLEANOUTS \ 3 INCH LAYER OF TOPSOIL SHALL BE PLACED ON THE DISTURBED o \ I (TYP.) �� EMBANKMENT SURFACE AND THE AREA SHALL BE LINED WITH SOD. 00 13. TESTS OF THE DEGREE ( . OF COMPACTION OF THE PLACED \ FILL IN THE DAM SHALL BE RFORMED AS PART OF THE \ PERMITTEES'S NORMAL QUALITY CONTROL PROGRAM FOR THE W co PRECAST CONCRETE RISER WITH GRATE TOP N.T.S. DAM. TESTS SHALL BE CONDUCTED CONCURRENT WITH THE o I FTUF BERMU SOD \ �, �, �, �� , STRUCTURE DIMENSIONS: 36 X 36 OD (6 WALLS) INSTALLATION OF THE COMPACTED FILL AND THE CONTRACTOR c \ \ SHALL COORDINATE THE CONSTRUCTION OF THE DAM SO THAT d THE TESTING CAN BE COMPLETED. SHOULD THE RESULTS OF \ \ THE TESTS INDICATE THAT THE SPECIFIED DEGREE OF \ \ \ COMPACTION HAS NOT BEEN OBTAINED; THE PORTIONS OF THE \ \ DAM REPRESENTED BY SUCH TEST SHALL BE REWORKED OR COORDINATOR: I' I' NEW 4" PVC AS I' I' I' REBUILT. ALL PORTIONS OF THE DAM SHALL ACHIEVE THE Blair Pittman \ UNDERDRAINS \ SPECIFIED MINIMUM DEGREE OF COMPACTION. \ I - NEW 6" SCH 40 PVC AS (TYP ) A UNDERDRAIN COLLECTOR- 28� �, NarDRA Nyaup: ane] Z• BY: BPP - - _ 280.50 = = 281 --,,t/ 282,I,50x _ ,I,282.5,p M NEW 15" RCP, 282.50 �� _ 28� Ca?2.43% SLOPE INV. IN: 276.85 2 INV. OUT: 276.00 "\ 80 - 7'X20'X18" CLASS 'B' ` I I RIP-RAP AS FOREBAY \ LINING & OUTLET \ PROTECTION PAD \ PROPOSED SWALE ID#1 (1' BOTTOM WIDTH, 3:1 SIDE \ 'B' 8 X2O'X18" CLASS 'B' SLOPE) LINED WITH NORTH AMERICAN GREEN C125 6'X8'X18" CLASS RIP-RAP FOR '13 RIP-RAP AS SPILLWAY ERONET OR EQUIVALENT TYP. SHADED AREA PROTECTION PROTECTION (FOR INSTALLATION DETAIL, SEE SHEET C7.0) U) THE OPERATION AND MAINTENANCE OF THE PROPOSED BIORETENTION POND IS PLAN 0 5 10 20 THE RESPONSIBILITY OF THE OWNER. REFER TO THE ATTACHED STORMWATER CALCULATIONS REPORT FOR A DETAILED LIST OF REQUIRED BIORETENTION POND BI®RETENTI®N CELL MAINTENANCE ITEMS THAT ARE REQUIRED TO BE PERFORMED ANNUALLY, SCALE: 1" = 10' MONTHLY, OR DAILY. z w WASHED BERMUDA SOD SIDES AND BOTTOM OF C3 GRATE-TOP FOR AREA INLET BIORETENTION. SOD NOT TO BE GROWN IN CLAY SOILS 4" SCH 40 PVC CLEAN-OUT 2' X 2' PRECAST AREA INLET 8'X20'X18" NCDOT CLASS 'B' RIP-RAP PIPE (TYP OF 1 1) PIPE TO 7'X20'X18" CLASS 'B' BE THREADED AND CAPPED w /-� INV. IN(6" PVC): 276.90 OVERFLOW AREA PROTECTION LINING RIP-RAP AS FOREBAY LINING V , INV. OUT(15" RCP): 276.85 ±8" TO TOP OF CLEAN-OUT O TOP OF BOX: 281.50. PIPE TO ENSURE VISIBILITY /-� PAINT OUTSIDE OF CONCRETE V J RISER WITH WATERPROOFING WEIR LENGTH 8.00 EL 282.50 3N.� EL 281.75 =III III= ____= V EL 281.50 2-YR EL 281.03 10-YR EL 281.14- -p100-YR EL 281.34- -_II - = III-III III-III-III III- x 1-YR EL 280.91 _ _ -9- =III III=III III=III=III-III==- EL 280.5SOD LEVEL/PLANTING SURFACE 0 z z 279.00 . // PROPOSED SWALE LINING, II II II II II II II II II II / r / / / EL va oo i 0.33 / / / / / / / / / / / / / / / / / III=III NORTH AMERICAN GREEN _ III=III-III: C125 ERONET OR =1 I-III=III III-III- EQUIVALENT I� =1 =1 -- - -- -- --EL 276.67- -- --- - --- -- -- --- - --- --- - --- -- -- --- --- - --- -- - - -- - --- --- - --- -- -- --- -- --- --- - -- --- -- --- -- --- III=III=1 - - -III=III- Q III-1 -1 -1 1= III-1 -1 -1 -1 -1 =1 -1 =1 =1 =1 =1 =1 =1 III=1 =1 =1 1= =1 =1 =1 III III-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 U III=1 I I=1 11= III=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I- I I=1 I I=1 I I=1 I I=1 I =1 I I=1 I I=1 I I=1 I I I =1 I=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I=1 I I=1 11= -III =III-- _=1 II II �I I� �I Ii iI Ii iI II II II II II II II II II II II II II II II II II II II II II II II III III-I II II II II -I - II II II II II II II II II II II II II II II II II II II II II II II II II II II II II iI Ii iI Ii �I I� II -I EXISTING SHWT 274.42 I 1=III= =III_ -III- z MIN. 12" WASHED #57 STONE (MINIMUM 3" STONE PERMEABLE FILTER FABRIC B/W SAND r Q BOTTOM OF RISER TO /-� BE FILLED/HONED TO ABOVE UNDERDRAIN PIPE) BOTTOM OF CELL TO BE AND WASHED #57 STONE (TYP) L J MATCH INVERT OUT AND SCARIFIED PRIOR TO INSTALLATION OF WASHED #57 MIN. 4" THICK SAND w O AVOID ANY SUMP STONE TO PROMOTE INFILTRATION - DO NOT �M COMPACT 2.5' DEEP PLANTING SOIL (TYP OF HATCHING) WITH 1' OF INTERNAL WATER STORAGE 12" GRAVEL BASE (5) 4" SCH 40 PERFORATED PVC PIPE @ 0.5% SLOPE MINIMUM (MIN.) SOIL INFILTRATION RATE - 2" PER HOUR PROVIDE 4 ROWS OF 8" PERFORATIONS 6" O.C. FOR ENTIRE MIX: 75%-85% MEDIUM TO COARSE WASHED SAND (ASTM C33, AASHTO M 6/M 80, LENGTH OF UNDERDRAIN ASTM C330, AASHTO M195, OR THE EQUIVALENT), 8-10% FINES (SILT AND CLAY) AND 24 5-10% ORGANIC (SUCH AS PINE BARK FINES) PHOSPHOROUS INDEX: 10-30 GEOTECHNICAL ENGINEER TO VERIFY PRIOR TO INSTALLATION - DO NOT COMPACT ]PROFILE (SECTION A-A) REVISIONS 14 NOV 2022 N.T.S. CALL BEFORE YOU DIG! No. DATE DESCRIPTION REV. BY 22-0011 NORTH CAROLINA LAW REQUIRES NOTIFICATION OF HARNETT COUNTY THE UNDERGROUND FACILITY OWNER NOT LESS 1 12.29.2022 COMMENTS BC THAN TWO(2) BUT NO MORE THAN TEN(10) SHVVT INCLUDED DETAILS WORKING DAYS PRIOR TO EXCAVATION OR APPROVED FOR o 3.20.2023 NN RTH CARO IN DEMOLITION PERMITTING 3 0 5.3.2023 RENUMBERD SHEET# NN 811 www.nc811 .org ® 6.20.2023 SCM ELEVATIONS UPDATE NN 1 -800-632-4949 NOT FOR CONSTRUCTION 50 8.32.2023 USCM ELEV., NDERDRAINAUPDATE & NN North Carolina One-Call Center Inc. 0