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HomeMy WebLinkAbout166-03 Minor Mod 2004 Oversized PlansEROSION CONTROL AND STORMWATER MANAGEMENT NARRATIVE: STORMWATER NOTES: THIS PROJECT WILL BE SUBMITTED TO THE NCDENR-DWQ FOR LOW -DENSITY STATE STORMWATER APPROVAL AS REQ'D UNDER 15A NCAC 2H.1000. THIS PROJECT SHALL ALSO COMPLY WITH THE TOWN OF OCEAN ISLE BEACH'S STORMWATER MANAGEMENT ORDINANCE EFFECTIVE AS OF NOV. 14, 2000. SECTION 49-33(2) OF THE OCEAN ISLE BEACH STORMWATER ORDINANCE WILL REQUIRE INDIVIDUAL INFILTRATION SYSTEMS TO BE INSTALLED FOR EACH HOME, IN ORDER TO CONTROL THE RUNOFF FROM ALL SURFACES THAT IS GENERATED BY THE FIRST ONE AND ONE-HALF (1 1/2) INCHES OF RAINFALL DURING A 10-YEAR, 24-HOUR RAINFALL EVENT. PROJECT DESCRIPTION: MARITIME PLACE IS BEING DEVELOPED BY STUART F. COOKE OF COOKE REALTY, AND IS SITUATED ON A 4.41 ACRE TRACT LOCATED WITHIN THE TOWN LIMITS OF OCEAN ISLE BEACH, NC. THE SITE IS ADJACENT TO EAST SEVENTH STREET, NEAR THE INTERSECTION OF SEVENTH STREET AND SHALLOTTE BLVD. THE PROJECT WILL CONSIST OF THE CONSTRUCTION OF TWO NEW ROADWAYS (BAYWATCH AND OLD MARINA), DRAINAGE FACILITIES, WATER SERVICES, SEWER SERVICES, AND OTHER UTILITIES. TWO (2) GRASS SWALES WILL BE CONSTRUCTED ON -SITE TO SERVE THE PROJECT. THE SITE WILL PRIMARILY INVOLVE WATER BEING DIRECTED BY CURB AND GUTTER TOWARD CURB INLETS, AND THEN INTO THE SWALES. THE GRASS SWALES WILL DISCHARGE TO THE ATLANTIC INTRACOASTAL WATERWAY. THE CLASSIFICATION OF THE INTRACOASTAL WATERWAY IS SC. THE SWALES ARE DESIGNED TO HANDLE THE PEAK RUNOFF FROM A 10-YEAR, 24-HOUR STORM. TERRAIN AND SOILS: THERE IS APPROXIMATELY 6 FEET OF RELIEF ON THE SITE. BASED ON THE SOIL SURVEY OF BRUNSWICK COUNTY, THE PROMINENT SOILS ON SITE BELONG TO THE BOHICKET-NEWHAN-LAFITTE SERIES. THESE SOILS ARE GENTLY SLOPING TO STEEP, EXCESSIVELY DRAINED SOILS THAT ARE SANDY THROUGHOUT. ADJACENT PROPERTY: THE PROPERTY AREA IS BOUNDED TO THE EAST AND WEST BY MARSH (OWNED BY O. WILLIAMSON), TO THE SOUTH BY SEVENTH STREET, AND TO THE NORTH BY THE ATLANTIC INTRACOASTAL WATERWAY. EROSION CONTROL -MEASURES- TEMPORARY EROSION CONTROL MEASURES WILL INCLUDE CONSTRUCTION ENTRANCES AND SILT FENCING. STONE CHECK DAMS WILL ALSO BE INSTALLED WITHIN THE GRASS SWALES. THE METHOD FOR LIMITING THE AMOUNT OF ERODED SOILS RELEASED FROM THE PROJECT AREA ON A PERMANENT BASIS SHALL BE THE STABILIZATION OF ALL DENUDED SURFACES WITH PERMANENT GROUND COVERING. EROSION CONTROL NOTES: 1. ALL CONSTRUCTION ACTIVITIES SHALL BE PERFORMED IN COMPLIANCE WITH THE SEDIMENTATION POLLUTION CONTROL ACT OF 1973. 2. ALL LAND DISTURBING ACTIVITIES ARE TO BE PLANNED AND CONDUCTED TO LIMIT EXPOSURE TO THE SHORTEST FEASIBLE TIME. 3. ALL DISTURBED AREAS SHALL BE STABILIZED BY A PERMANENT GROUND COVER. 4. AS SOON AS ALL AREAS ARE PERMANENTLY STABILIZED, ALL PERMANENT MEASURES HAVE BEEN INSTALLED, AND FINAL APPROVAL IS RECEIVED FROM THE LAND QUALITY SECTION, THE TEMPORARY MEASURES MAY BE REMOVED. 5. OVER THE LIFE OF THE PROJECT, THE OWNER SHALL MAKE PERIODIC INSPECTIONS TO EVALUATE THE SUCCESS IN CONTROLLING EROSION OF SOILS TO OFF -SITE AREAS. IF AREAS ARE FOUND WHERE EROSION IS TAKING PLACE, THE OWNER SHALL TAKE THE NECESSARY MEASURES TO REMEDY THE SITUATION. CONSTRUCTION SEQUENCE: 1. CONTRACTOR TO NOTIFY N.C. LAND QUALITY SECTION REGIONAL OFFICE IN WILMINGTON, (910) 395-3900, PRIOR TO BEGINNING CONSTRUCTION 2. INSTALL TEMPORARY EROSION CONTROL MEASURES (SILT FENCE AND GRAVEL CONSTRUCTION ENTRANCE). 3. GRADE SITE. 4. CONSTRUCT GRASS SWALES AND INSTALL STONE CHECK DAMS. 5. INSTALL WATER AND SEWER LINES AND SERVICES. 6. INSTALL CURB AND GUTTER, AND CONSTRUCT ROADWAY. 7. VEGETATE DISTURBED AREAS OR COVER WITH GRAVEL. 8. MAINTAIN ALL TEMPORARY MEASURES UNTIL PERMANENT AND UNIFORM VEGETATION IS ESTABLISHED. NOTE: BASE INFORMATION WAS PROVIDED BY BRUNSWICK SURVEYING, SUPPLY, NC. ALLOWABLE BUILT -UPON AREA: LOT # LOT SIZE (SF) BUILT -UPON AREA (SF} 1 5152 1265 2 5152 1265 3 5152 1265 4 5152 1265 5 5112 1265 6 5030 1285 7 5368 1330 8 5399 1320 9 5175 1315 10 5069 1145 11 5115 1145 12 5098 1145 13 5076 1145 14 5726 1315 15 6023 1400 16 7704 1420 17 5507 1285 18 5064 1275 19 5090 1270 20 5363 1270 21 5411 1120 22 5748 1120 This drawing shall not be reproduced in whole or in part without written permission of East Coast Engineering Company. P.A. _._.... -... 1. A-���W AY Y RIGHT 01 wa_ TRAG�AST�4 \14T ANON.RA�o�`S_. T-sERW`.•---` � �II�. 1AT 04 '-_ I i i I i li I' , , I' I I' , I it , II , , r� , 1 ,I , II, 1 I , l l I 1 II , II I 1 ,I , II , ,I , ,I , I II , 'I , , 'I , II 1 , I , II I ll I , 'I I 11 1 , tl , I 11 , , II � I I 1 I , I 1 1 "I „ „ I I , I1 j1 I „ D r O A 00 r 0 0 CD C-1 c AL �dik A4 RIM MRA AL KIM MM AL win RM I& XIL Ali .\JL lum AL AL :SILT FENCE 1t 41 Alit �Illc �1� t 1 �^ \ x �� x x j1' 1 fo t\ �dL ,\ 4b \ , 16 �`( III i 1 15 : , I ` r,• if pfill, :` fill lilt 5.7 �lllc � it t' I : / e � ••�••, \\ , ' i t / �tl I 1 '�"1 �5. t �►•-• ' �1 + I 1 1 1 •.. �l ` L\ i I I 0 U I tl ,,;Ilip �t a It it it I77 r \ ,; \- B .5 5 ! I ` ' t tt, AIL 17 5.4 t r t , ;SST FENCE I I i, i , • t : , '\• '\ t i` STONE OUTLET Oj 1 - �' 1 \: LIMIT OF j „i 11 1 i ' •; \t\i\ 1 DISTURBANCE ; C` ;1 ,'1 L•..r.'• `\ �' it ;I I- 1ti .-� ' \ 1 \` (3.6 ACRES) i , TEMPORARY' , , / \ , j I I , I 1 �` ••. O STONE CHECK DAM 1 I I'tDl , . n,.... `< AIL � o 6.73� o D ll;i i 7J ; `\ ; I i�l;l`i ,` 5.08 t 1 tt\}I i i I' I t I � ta-1 1` `'`\ •�\ 1 11 / 1 I ' I I i \ t�i1 i ttti `1 ar...�•..� I I \`t\t tt illy AL it�. ' `�1f j , I' ,Ills I : _.�• �. \, i1 , I! ll,ta if . � .�... 5.85 �� "\`\ '\ � � � 5A LIMIT OF 1 V \\\\�..r.•.•rme�"=`" � '/'lr 6 , tar QRASS i-DISTURn�ar.•i�•E _- I tltlli I ' `\ it/r SWALE#1 '� 1.r" j «•J tt i 1111E �111L i i t t (5:1 SIDE SLOPES) \ ,y...o• •-•.. 11'I L... _... _..._._...1 i y6� ,- �C'?l t 1 .�.....-......•...� tl;t�i 5• J BERM - MAINTAJ I I REMOVE EXISTING tl I; ... - . j ® POSITIVE DRAINAGE AWAY FROM MARSH CURB CUT w! f-.«- 1 GRASS (TYP) - CONCRETE PRON 5.11 (SEE DET no ' I ' C CUT REETEAPRON OPEN SPACE L ( 4.99 (SE ETAIL) J 0.66 AC. t 11 It �, rr .41 --- SWAB TEMPORARY ' ..«...r... ; ( 1 - CONSTRUCTION \ l i I i i 11 L......«...J ( 5.27 ( ENTRANCE I I I I it I 10 �Illc �1� REMOVE EXISTING BERM - MAINTAIN t lilt 1 it ! t \ 't �• ' ! }` ' ' _- i POSITIVE DRAINAGE AWAY FROM MARSH12 Y (TYP) 1 • I , �' i GRASS ' 1 I , I 1 : \ : 1 , 13 ' ' t ;y..«�-•.. i \ I 5 QO ` , \ L,... ! \ i+•« . ! 1 I E I i 1 ! I ! ...._ •• v ' TEMPORARY CONSTRUCTIONS �,,,...�• ." • -S ,' ,' „ Y r.. 4 9 NTFiANC� t; '1 i IC0I l; ( till i 1 1. IMW -TEMPORARY I III v v STONE SILT FENCE I I I j i !! I : �.••-�" \` i CHECK DAM 1 STONE OUTLET INV.IN=3.5 - ---- ---- - j LIMIT OF (SEE DETAIL) DISTURBANCE ' ' 4 , < NTH ET M I - - TEMPORARY S-I'RE - SILT FENCE _- �-.- �-- � `- � E. SWALE L (3Ofl GRASS SLOPES) TE ES) - - iT5' CONCRE- - x�_ x x - _ _ CULVERT J� ­7- M. OUT - 3. - . \ _ EROSION CONTROL r STORMWATER PLAN \ j � LIMIT OF DISTURBANCE I cc, I 4 I SCALE: I" SgALE: 1 80 Ir 0 40 80 160 240 I ; I ' I co j I I 192,100 SF 48,025 SF 20,171 SF 27,854 SF 1,256 SF 1,420 SF 1,120 SF 9-5-03 Stormwater Notes Revised 6-8_(A Disturbed Area for Existing Berm Removal Z Q1 � N W 00 N O0 0 ��o 'on 00 O Z V O 0 � O� c-1' 00 V 1 � W z O z (0) U H 0 ^� F- O rTl Z O w A � U z O Date: 18 n T •Y 03 Scale: 1" = W Drawn By: BSH Checked By: DBB/ACL THIS PLAN IS NOT ISSUED F( CONSTRUCTION WITHOUT AFFIXED .CARFI ATE SEAL. Sheet 3 of 7 ECEC PROJECT NO.0537