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HomeMy WebLinkAboutSW7060814_APPROVED PLANS_20061229PERMIT NO. DOC TYPE STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS sw ❑ CURRENT PERMIT APPROVED PLANS ❑ HISTORICAL FILE DOC DATE YYYYMMDD Z J r 1. _. 1 . i _': L--I'_f }_1 ,._i. ' L.L�tl i'Uti ll.0 i VICINITY MAP N.T.S. GRATE ELEV = 12,68' BOC ELEV = 13.22' INV OUT = 9.58' G 1y ly ly yl 4 1 y �- yy IL ly 1y 1 '� y t L ,il t 1 1 yy yy I II y► t,}q I 0. 1 f EXIST. CONC. yl _i PARKING I - _---------------I - 1 t171-3113 IrE 1r EXIST. BUILDING ELEV = 15.44' t y % � FOC CONSTRuc76N ENTRANCE --1.3:6` Ly w FOC ELEV 15.37' 1 EX. GRATE ELEV = 12,13' y T1. ------ BOC ELEV = 12.71' INV IN - 9.48 INV OUT 1 9.73' EX. GRATE ELEV = 12.18' 1 BOC ELEV = 12.72' 1 �� INV IN = 9,78' 1 1 INV OUT - 9.83' 1 TEM 1 1 � SILTFORARY ENCEti G 111 `rf 1 312' ELEV = 15.09' 1y1 7 111 1 � y ELEV = 14.75' t 1 1 ly 1 / } .44'' .. 1 11 GRATE ELEV - 12.59'11 SOC ELEV = 13.04' INV OUT = 9,04' INV IN - 9.34' 1 J INV IN = 9.29, ENV ou� T 9.02T INV OUT = 9,43' 1 +. i 1 1 , EXISTING FIRE HYDRANT I III + I �I I N/F LOTPM. & CHARLES E. D.B. 477, PG 347 PIN# 0094 000 135B 001 f ZONE GB (MIY�D USE. OFFICE/RES N/F LOWER CURRITUCK V.F,D., INC. D.B. 191, PG 567 PIN# 0094 000 0136 0000 ZONE GB CLEARING LIMIT l 13.2 FOC - - } 1N VOUT - 9. ' �lJJr � OG J f r• f � - � +' v L r � 3 ' �' 0 3.2' / 3.8' 13.3' 1 .9, I / TOG - ce#7B INV IN ice' QQ INV OUT 1 �1 � � l� � J J�� Jl��-• .3' a�' FOC O - - {{ CB#3 FOC FOC ~115 LF. OF 15" RCP %4If INV OUT 9.5' - .._ _.... - FOC 12.8' II FOC' 13.V - - F 112 L.. OF 15" RCP TOG -= .3' 13INV IN ===-- �B#2--7- �g 45' DRAINAGE ACCESS 1FOC FOC SA 13.4, � r FDC FOC 11 INV OUT, 9:6 = 9.3' EASEMENT -- _.__.-- - \ PERMANENT CB#4 ,-` C 1, FO INV IN = 9.2' 15 LF, OF 15" RCP � I IIINV OUT - 9.0' •, + - 120 L.F. OF 1 INV IN 9.0' �� FOC FOCI J L - J INV INVI = 9.1' �� 10 AQUATIC BENS '4 la I T - 8 6,1 SLOPE FOC INV EL 8.r I - FOC 11 EOP F 11 TOG' I 60C INV OUT s 9.8'- I _ RIP -RAP - FOC -- raj PERMANEN -- _ / Poo z f M A � -1 / FOC Ijl 50, \ 15" RCP SLAB - -- TOG \ TOP OF BAFFLES --- 1 - - CB#5 z I vN) = 1i.0' INV OUT 9li -- o n 50' � - -FQCUS �\\ -- N Z a FLOW W 1 1 z E TOG \ _ a - -- a STRUGTLIR WEIR LJI�-+.1i 4 _. -- -- _ o INV k Z INV`,OUT = 8A' r CBI k Z 7' 1 >X PUT a 9.7' .-. I�/ 8� _ �I tr- 12' ; 1 2` REI'UNI �► SPILLWAY;' W 12 -_TS GE - �, ' 13 A r:< - _ EASEME T OP -- TEMPORARY SILT FENCE �----_.---- - __- 10' -__ �.� - - Is _ - i CLEARING LIMIT -� N/F JULIAN EVANS D.B. 081, PG 471 PIN# D094 DOO 0133 D000 ZONE G8 (OFFICE USE) 24 W/ BACKFLOW PREVENTER INV OUT - 8.0' �+ CURVE TABLE CURVE I LENGTH RADIUS I CHORD Cl 1 52.3 ' 2167.1 S 34'51'26" E 2.35' C2 1 132.03' 2167.16' 1 S 32'25'12" E 132,0 ' i - ff ELEv - M I i L A II INV OUT -49.7'�1 7 CB#11 B ~ INV IN = 9.6' 1 1 l1 { INV OUT = 9.3' 11 L0o Q'O �_-� 111 1 r CLEARING LIMITS F '1 11 _FOc_ PR OPO D SLAB TOG INV OUT --S. FF ELIE 14.0' - - GRADE do STABILIZE EXISTING -___ -_ N/F W. ELDON GRANDY, JR., PHYLLIS GRANDY, SHEILA K. GRANDY, TOMMY RAY GRANDY D.B. 296, PG 497 PIN# 0094 000 1448 0000 ZONE G8 (WOODLAND USE) GENERAL NOTES: 1. SUBJECT PROPERTY: 6339 CARATOKE HWY, GRANDY AS RECORDED IN D.8, 921, PG 862 2. CURRENT OWNER AND APPLICANT: OUTER BANKS FRAMING, LLC &fkf C/O GEORGE SHULTZ 4483 CARATOKE HWY, SUITE 4 BARCO, NC 27917 453-8292 MM DE516N 3. NO ARMY CORPS OF ENGINEER "404" JURISDICTIONAL WETLANDS ARE LOCATED ON THE SITE. EIV611J�ERll�l6 P.G. P.O. BOX 1470 4. BOUNDARY INFORMATION AS PER SURVEY PREPARED BY WILLIAM T. ROBBINS 10-20-05, K17 r HAAK. NG P.O. BOX 1100 GRANDY, NC 27939, (252) 453-2126. TOP INFORMATION PROVIDED BY 2744q ADVANTAGE LAND SURVEYING, 2701, D.N. CROATAN HWY, KILL DEVIL HILLS, NC 27948 (252) 261-6714 PROPOSED IMPROVEMENTS: THE PROPOSED DEVELOPMENT INCLUDES THREE OFFICE BUILDINGS ON CONCRETE SLABS WITH PITCHED ROOFS. THE PARKING AND DRIVE ISLES WILL BE 2" ASPHALT OVER 6" GRAVEL BASE WITH 2'-6" CONCRETE CURB AND GUTTER. SITE CON71DMONS- SITE VEGETATION IS SPARSELY TO HEAVILY WOODED WITH MATURE LOBLOLLY PINES, JUNIPERS AND OAKS. THE AVERAGE GROUND ELEVATION IS 12.0' M.S.L. WITH THE WATER OBSERVED AT 7' M.S.L. SEASONAL HIGH WATER TABLE ESTIMATED TO BE 9' BASED ON SOIL CHROMA AND ACCOUNTS FROM NEIGHBORS OF WATER LEVELS IN THE NCDOT DITCH ALONG THE SOUTH PROPERTY LINE. SITE SOILS ARE CnA (CONETOE) LOAMY SAND WELL DRAINED WITH RAPID PERMEABILITY (6"-20"/hr), Ds (DRAGSTON) LOAMY FINE SAND SOME WHAT POORLY DRAINED SOIL WITH MODERATELY RAPID PERMEABILITY (6 in/hr), AND Pt (PORTSMOUTH) FINE SANDY LOAM VERY POORLY DRAINED SOIL WITH MODERATE PERMEABILITY (1 in/hr). THE NORTH EAST CORNER OF THE PROPERTY IS PORTSMOUTH, THE CENTER OF THE SITE INCLUDING THE AREA OF THE PROPOSED WET BASIN IS DRAGSTON AND AN ACRE ALONG U.S. 158 IS CONETOE. SITE SOILS HAVE LOW SHRINK -SWELL POTENTIAL. MANAGEMENT NARRATIVE: STORMWATER IS COLLECTED FROM THE PARKING AREAS AND STREET BY CATCH BASINS AND DIRECTED BY PIPE TO THE FOREBAY OF A WET DETENTION BASIN. THE COVERAGE ALLOWED BY CURRITUCK COUNTY U.D.O. IS 65%. PROPOSED COVERAGE IS 52.4%. THE WET DETENTION BASIN IS SIZED AND CONFIGURED TO PROVIDE SIGNIFICANT REMOVAL OF POLLUTANTS FROM INCOMING STORMWATER RUNOFF. BAFFLES CONSTRUCTED FROM SHEET PILES WITH A CONCRETE CAP HAVE BEEN PLACED IN THE WET DETENTION BASIN TO LENGTHEN THE STORMWATER FLOW PATH AND PREVENT SHORT CIRCUITING. THE PERMANENT POOL OF WATER IS DESIGNED FOR 90% TSS POLLUTANT REMOVAL EFFICIENCY. A 6:1 SUBMERGED VEGETATED SHELF 10' WIDE IS LOCATED BELOW THE PERMANENT POOL ELEVATION. VEGETATIVE COVER ABOVE THE PERMANENT POOL ELEVATION SHALL BE SOD. A 120' DRAINAGE EASEMENT WILL BE RECORDED THAT IS 120' WIDE AT THE BASIN AND 45' WIDE EXTENDING TO CARATOKE HIGHWAY. DRAINAGE OF THE BASIN FOR MAINTENANCE OR AN EMERGENCY WILL BE BY SUMP PUMP WITH A 10" DISCHARGE LINE, CALCULATIONS PERMANENT POOL DESIGN: U AVERAGE PERMANENT POOL DEPTH 5.0' tl� COVERAGE ALLOWED = 65% COVERAGE PROPOSED = 52.4% v DRAINAGE AREA (DA) = 3.0 AC SA/DA = 3.7 (90% TSS IN COASTAL COUNTIES) SA = (3.7/100)3.OAC = 0.111 AC = 4,835 S.F. VOLUME TO BE CONTROLLED FROM THE 1-INCH STORM: f� Rv= 0.05 + 0.009(I) Rv = RUNOFF COEF = STORM RUNOFF (IN)/STORM RAINFALL (IN) I = PERCENT IMPERVIOUS (ACRES) Rv = 0.05 + 0.009(65) f Rv = 0.64 VOL = (DESIGN RAIN FALL)(Rv)(DRAINAGE AREA) = 1 INCH x 0.64 x (1/12 feet/in) x 3 ac x (43,560 sf/ac)= 6,970 C.F. 4 DEPTH ABOVE PERMANENT POOL: VOL/SA = 6,970 C.F./ 4,835 S.F. = 1.44' DRAW DOWN STRUCTURE IS DESIGNED TO REMOVE RUNOFF FROM THE FIRST INCH OF RUNOFF IN 3 DAYS. a O THE DESIGN PREDICTS THE RUN-OFF PEAK ATTENUATION DESIGN STORM DOES NOT EXCEED THE PEAK ASSOCIATED WITH THE PRE -DEVELOPED CONDITIONS. THE PEAK FLOW LEAVING THE NEW DEVELOPMENT SITE EXHIBITS NO NET INCREASE FROM THE PRE -DEVELOPMENT CONDITIONS. W APpROVED rt, 0AROLINA ENfV1RONMENTAL O ti �. ,,-:^.,>.GEMENT COMMISSION OF WATER QUALRY D:'-'IS-ON s _ "T, 20_aL l}C G✓ 7 BGD�r� Ix E:,,or,,nwater PernA No. fz - ROADWAY CENTERLINE - - RIGHT OF WAY -- - PROPOSED SWALE 11 - -- - EXISTING CONTOUR PROPOSED WATERLINE e PROPOSED UNDERGROUND POWER PROPOSED STORMWATER RCP r -• CLEARING LIMITS _ X TEMPORARY SILT FENCE PROPOSED CURB INLET ® PROPOSED DROP INLET PROPOSED HYDRANT ASSEMBLY PROPOSED 2" WATER SERVICE STORMWATER FLOW 12.0' � PROPOSED FINISHED GRADE EXISTING TREE TO BE SAVED PROPOSED LIGHTING ON 18' POST EOP EDGE OF PAVEMENT TOG TOP OF GRATE BOC BACK OF CURS (TOP OF CURB) FOC FACE OF CURB (FLOW LINE) c13-3 EXISTING POWER POLE ® EXISTING PHONE PIED. EXISTING REBAR EXISTING OPEN PIPE EXISTING CONC. MONUMENT GRAPHIC SCALE 30 0 15 30 60 ( IN FEET ) 1 inch = 30 ft. 120 CAR 't :7 4 m f1 na 3 m j 9 m N ° ° # v L LL # E E g o m a v v J Q Q -rysnv-u`<mr PA 71F 6-19-06 DRAWN MAM FILE NO, 020606 SHEET �ol�* 2 r 1 .,,,_ r :•i ' �T - -�t-WI -T-'�=f" 1.� ':TV ;S I +4 5 ti' S)14�`. a,'W. li ,b � i � i. :. .' a I .' .:.r. !, ,'. .. i •! =1 , � .}a ,�1 `�'a.�' �. ,� 'i � I s � � , � i:t.:�'f'„i� 1 r , .'� �;9. DRAWDOWN TERRESTRIAL BENCH SEE DETAIL SOD ABOVE ANTI VORTEX PERMANENT POOL ELEV. TRASH CAP EARTH BAFFLE RUN OFF WEIR EL = 11.0'� TEMPORARY POOL ELEV. 10.6' EL = 8.2 VOLUME ' Sit NORMAL POOL LEVEL 7-7 _-_-----_.__..___ __...--__-- -----------PERMANENT POOL ELEV. = 9' 10' AQUATIC BENCH SEDIMENT FOREBev MAIN POND MAX 6:1 SLOPE 3 -fit SEDIMENT REMOVAL ELEV. = 7' - - - x BOTTOME ELEV. = 6' a 24" CORRUGATED METAL RISER FILL BASE WITH BOTTOM ELEV. = 4' BASIN DIAGRAM L Avg. Basin Width EMERGENCY SPILLWAY ELEV = 11.6' MIN. WIDTH 10' EMBANKMENT COMPACTED 95% PERVIOUS MATERIALS SUCH AS CLEAN SAND OR GRAVEL SHALL 3 NOT BE USED 24" RCP WITH �t EXISTING 0-RING GASKETS DITCH A5TM C361 WITH BACK FLOW PREVENTER CONCRETE EXTEND CORRUGATED METAL RISER MIN. 6" INTO FOOT 4 CONCRETE FOOT 18"X 48" WITH (4) #4 BAR AT 12" O.C. EACH DIRECTION BAFFEL TOP VIEW 4"x4"x1/4" Angle Iron Concrete Cap / Q nn;n Qni•i•nm N OTE: I I I I j j j j Continous weld or 4"0%1 /4" I I I I I I I I Angle Iron bolted with 1/2"x3" bolts. I El-- 3.0' STRUCTURE (s) BAFFEL SECTION NCDOT TRAFFIC BEARING GRATED DROP INLETS (STD NO. 840.36) G IN TRAVEL LANES AND 2'-6" CURB AND GUTTER INLET (STD 840.01) 4" CONCRET COVER r It 2 NOTES: 1. RIPRAP SHOULD EXTEND UP BOTH SIDES OF THE APRON AND AROUND THE END ga g" OF THE PIPE CR CULVERT AT THE DISCHARGE OUTLET AT A MAXIMUM SLOPE OF 2:1 AND A HEIGHT NOT LESS THAN TWO THIRDS THE PIPE DIAMETER OR _ CULVERT HEIGHT. 2. THERE SHALL BE NO OVERFLOW FROM THE END OF THE APRON TO THE 0 SURFACE OF THE RECEIVING CHANNEL. THE AREA TO BE PAVED OR RIPRAPPED SHALL BE UNDERCUT SO THAT THE INVERT OF THE APRON SHALL BE AT THE ;•: ` ..` :,' SAME, GRADE (FLUSH) WITH THE SURFACE OF THE RECEIVING CHANNEL. THE APRON SHALL HAVE A CUTOFF OR TOE WALL AT THE DOWNSTREAM END. SECTION Y-Y `O 3. THE WIDTH OF THE END OF THE APRON SHALL BE EQUAL TO THE BOTTOM WIDTH OF THE RECEIVING CHANNEL. MAXIMUM TAPER TO RECEIVING CHANNEL 3:1 4. ALL SUBGRADE FOR STRUCTURE TO BE COMPACTED TO 95% OR GREATER. 5. THE PLACING OF FILL, EITHER LOOSE OR COMPACTED IN THE RECEIVING CHANNEL SHALL NOT BE ALLOWED. 6. DEPENDING ON SOIL CONDITIONS, WASHED STONE OR FILTER FABRIC WILL BE NECESSARY UNDER RIP RAP. 7. ANY DISTURBED AREA FROM END OF APRON TO RECEEVING CHANNEL MUST BE STABILIZED. INI FT PI T� PLAN F 4" CONCRETE COVER is OPENING 8" 1 A n�_ 8" SECTION X---X DIMENSIONS OF BOX AND PIPE REINFORCING COVER DIMENSION PIPE SPAN WIDTH HEIGHT BARS - X BARS - Y TOTAL D A B H1NIN) NO. LENGTH NO. LENGTH LBS. F G 15"�� 3-6" 2,-3" 2'-7" 2 3-4" 7 4---7" 26 4 10 3-7�� 18 4' -0 2' -8 2 -1 1 " 2 3, --9 8 '-1 5'- 1 33 5 " -4 '-0 „ 4'- 0 24„ 4'-D" 2'-8" 3'-5" 2 3'-9" 8 5'-1" 33 5'-4" 41-0" 30" 4'-0" 3'-6" 3'-11" 2 4'-7" 9 5'-1" 37 5'--4"4'-10" 36" 4'-0)' 3'-6" 4'-6" 2 4'-7" 9 5'-1" 37 5'-4"4'-10" 42" 4'-0" 3'-6" 4'-11" 2 4'-7" 9 5'-1" 37 53-41)4'-10" 48" 4'--6" 4'-0" 5`-5" 2 5'-1" 10 5'-7" 45 5'-10' 5'-4" ANTI -VC TRASH 4"PVC S INT 4" PVC SCREW PLUG TEMPORARY POOL TEE PERMANENT POOL VC STUBBED TO BELOW PERMANENT PVC CAP 1 1" HOLE _LED DRAWDOWN DETAIL N.T.S. NATURAL GRADE (6' MIN.) IIII" RIP RAP _fll�- �!I 3 - !! �I I H III " IIII= =_III IIINI- f _ = NOTE: \ LAYER OF FILTER FABRIC MINIMUM H=2/3 PIPE DIAMETER SECTION B-B �MOUNTABLE BERM (6" MIN.) 50' MINIMUM EXISTING PAVEM EARTH FILL * GEOTEXTILE CLASS 'C'� PIPE AS NECESSARY OR BETTER MINIMUM 6" OF 2"-3" AGGREGATE OVER LENGTH AND WIDTH OF EXISTING GROUND STRUCTURE PROFILE VIEW * 50' MINIMUM LENGTH 12' MINIMUM WIDTH PLAN VIEW T 10' MIN. 01 EXISTING 10' MEN. PAVEMENT Construction Specification 1. Length - minimum of 50' (*30' for single residence lot). 10' MIN. 2. Width - 12' minimum, should be flared at the existing road to provide a turning radius. 3. Geotextile fabric (filter cloth) shall be placed over the existing ground prior to placing stone. **The plan approval authority may not require single fcmily residences to use geotextile. 4. Stone - crushed aggregate (2" to 3") or reclaimed or recycled concrete equivalent shall be placed at least 6" deep over the length and width of the entrance. 5. Surface Water - all surface water flowing to or diverted toward construction entrances shall be piped through the entrance, maintaining positive drainage. Pipe Installed through the stabilized construction entrance shall be protected with a mountable berm with 5:1 slopes and a minimum of 6" of stone over the pipe. Pipe has to be sized according to the drainage. When the SCE is located at a high spot and has no drainage to convey a pipe will not be necessary. Pipe should be sized according to the amount of runoff to be conveyed. A 6" minimum will be required. 6. Location - A stabilized construction entrance shall be located at every point where construction traffic enters or leaves a construction alto. Vehicles leaving the site must travel over the entire length of the stabilized construction entrance. 6" 1 /2" FINISHED GRADE \ 2'-0" 3" R 3000 PSI CONCRETE /8.. R FINISHED GRADE 2" 12 ASPHALT PAVING .6" A.B.C. COMPACTED SUBGRADE STANDARD CURB AND GUTTER SECTION NOT TO SCALE NOTES: CONTRACTION JOINTS SHALL BE PLACED AT 10' INTERVALS. ALL CONTRACTION JOINTS SHALL BE FILLED WITH JOINT FILLER AND SEALER. w M a 45' ``' 22.5' c� 15' U O V � O i rr i 0 10' 10' 1/4"/FT 1 4" FT 10' MAXIMUM CENTER TO -- CENTER 36" MINIMUM LENGTH FENCE POST, DRIVEN A MINIMUM OF 16" INTO GROUND 16" MINIMUM HEIGHT OF' GEOTEXTILE CLASS F 6" MINIMUM DEPTH IN GROUND PERSPECTIVE VIEW 36' MINIMUM FENCE POST LENGTH FILTER CLOTH -� FENCE POST SECTION MINIMUM 20" ABOVE FLOW GROUND - y UNDISTURBED GROUND EMBED GEOTEXTILE CLASS F TOP VIEW A MINIMUM OF 8" VERTICALLY FENCE POST DRIVEN A INTO THE GROUND MINIMUM OF 16" INTO POSTS THE GROUND SECTION 8 CROSS SECTION 4fN1%__ SECTION A STAPLE STAPLE/ JOINING TWO ADJACENT SILT FENCE SECTIONS Construction Specifications 1. Fence posts shall be a minimum of 36" long driven 16" minimum into the ground. Wood posts shall be 11/2" x 11/2" square (minimum) cut, or 13/4" diameter (minimum) round and shall be of sound quality hardwood. Steel posts will be standard T or U section weighting not less than 1.00 pond per linear foot. 2. Geotextile shall be fastened securely to each fence post with wire ties or staples at top and mid -section and shall meet the following requirements for Geotextile Class F: Tensile Strength 50 Ibs/in (min.) Test: MSMT 509 Tensile Modulus 20 Ibs/In (min.) Test: MSMT 509 Flow Rate 0.3 gal ft % minute (max.) Test: MSMT 322 Filtering Efficiency 75X (rein.) Test: MSMT 322 3. Where ends of geotextile fabric come together, they shall be overlapped, folded and stapled to prevent sediment bypass. 4. Slit Fence shall be Inspected after each rainfall event and maintained when bulges occur or when sediment accumulation reached 50X of the fabric height. 6' MIN. EL = 12.6' NATIVE SOIL OR --__-- EL = 11.6' COMPACTED 2"-4" ROCK BACKFILL EL = 10.6' 3/4"-1.5" WASHED GRAVEL EL = 9.6' GEOTEXTILE 275' 2" BITUMINOUS CONCRETE SURFACE COURSE TYPE 1-2 WATER LINE 6" AGGREGATE BASE COURSE MIN. 36" COVER TYPICAL STEET SECTION N.T.S. NOTE: 1, 0.18 TO 0.45 GAL/SYD PRIME COAT ON AGREGATE BASE COURSE 2. WATERLINE TO HAVE MIN. 36" OF COVER. LOCATE 15` FROM CENTERLINE OF ROAD. 3. PREPARE AND GRADE SUBGRADE. EMERGENCY SPILLWAY N.T.S. NOTE: ELEVATIONS ARE MAXIMUMS AT EMBANKMENT CREST AND WILL VARY DOWN THE SLOPE OF THE EMBANKMENT. NOTES AND CONSTRUCTION SEQUENCE: 1. CONTRACTOR TO HAVE EXISTING UTILITIES FLAGGED PRIOR TO ANY GROUND DISTURBING ACTIVITIES AND PRIOR TO PRE -CONSTRUCTION MEETING. 1- 800-632-4949. 2 CLEARING LIMITS TO BE CLEARLY MARKED AND SILT FENCE INSTALLED. 3. HOLD PRE -CONSTRUCTION MEETING TO COORDINATE FINAL PLANS AND SPECIFICATIONS, INVERTS AND UTILITY CONNECTIONS. NOTIFY ENGINEER, CURRITUCK PLANNING AND PUBLIC WORKS A MINIMUM OF TWO WORKING DAYS PRIOR TO MEETING, 4. TOTAL AREA TO BE DISTURBED: 5. SOIL EROSION AND SEDIMENTATION CONTROL AND LANDSCAPING PLAN. A. TEMPORARY SILT FENCING WILL BE PLACE ALONG THE WEST AND SOUTH DISTURBANCE LIMITS UNTIL SITE IMPROVEMENTS ARE PERMANENTLY STABILIZED. B. PLACE TEMPORARY WIRE -BACKED SILT FENCE AROUND OVERFLOW AND -- DRAWDOWN STRUCTURE AT THE BOTTOM OF THE BASIN AND REMOVE ANY SEDIMANT PRIOR TO CONVERTING BASIN TO PERMANENT STORMWATER MANAGEMENT. C. THE SITE IS RELATIVELY FLAT. ELEVATIONS NEAR U.S. 158 ARE APPROXIMATELY THE SAME AS THE DISTURBANCE AREA. THE PROPERTY ADJOINING ON THE NORTH WEST CORNER IS APPROXIMATELY ONE FOOT HIGHER. D. UPON COMPLETION OF CONSTRUCTION, AND PRIOR TO ISSUANCE OF CERTIFICATE OF OCCUPANCY, STORMWATER MANAGEMENT FACILITIES SHALL BE CERTIFIED BY THE PERSON WHO PREPARED THE DESIGN TO BE CONSTRUCTED IN SUBSTANTIAL CONFORMITY WITH THE COUNTY -APPROVED PLANS AND SPECIFICATIONS, THE ACCEPTABILITY OF A CERTIFICATION BY ANY OTHER PERSON THAN THE PERSON WHO PREPARED THE ORIGINAL DESIGN SHALL BE AT THE SOLE DISCRETION OF THE COUNTY. 6. SEED AND STABILIZE DISTURBED AREAS AS NOTED BELOW: STABILIZATION AND LANDSCAPING: STABILIZED EXPOSED SLOPES WITHIN 21 CALENDAR DAYS FOLLOWING COMPLETION OF ANY PHASE OF GRADING; PERMANENT GROUND COVER FOR ALL DISTURBED AREAS WITHIN 15 WORKING DAYS OR 90 CALENDAR DAYS (WHICHEVER IS SHORTER) FOLLOWING COMPLETION OF CONSTRUCTION OR DEVELOPMENT. A. FERTILIZER: APPLY 3,000 LB/ACRE GROUND AGRICULTURE LIMESTONE AND 500 LB/ACRE 10-10-10 FERTILIZER, TOP DRESS WITH 50 LB/ACRE NITROGEN. B. MULCH: APPLY 4,000 LB/ACRE STRAW. ANCHOR STRAW BY TACKING WITH ASPHALT, NETTING, OR MULCH ANCHORING TOOL. C. SEEDING/SODDING: 1. TEMPORARY VEGETATION: IF TEMPORARY SEEDING OCCURS DURING WINTER, EARLY SPRING, OR FALL, APPLY 120 LB/ACRE RYE GRAIN. IF SEEDING OCCURS DURING SUMMER, APPLY 40 LB/ACRE CENTIPEDE GRASS. 2, PERMANENT VEGETATION: APPLY COASTAL MIX CONSISTING OF 50 LB/PENSACOLA BAHIA GRASS, AND 10 LB/ACRE GERMAN MILLET. APPLY PERMANENT SEEDING BETWEEN APRIL 1 AND JULY 15. FERTILIZE THE FOLLOWING APRIL WITH 50 LB/ACRE NITROGEN. 3. SODDING: PERMANENT VEGETATION -SELECT COMPATIBLE SPECIES TO PERMANENT SEEDED TYPE; INSTALL WITH LONGEST DIMENSION PERPENDICULAR TO THE SLOPE AND STAPLE IF NECESSARY; ROLL SOD IMMEDIATELY AND WATER TO 4". 7. MAINTENANCE: ALL STABILIZED AREAS SHOULD BE CHECKED AFTER EACH SIGNIFICANT RAINFALL EVENT. RILLS AND GULLIES MUST BE REPAIRED, RE -SEEDED AND MULCHED AS SOON AS POSSIBLE. TEMPORARY DIVERSIONS MAY BE NECESSARY UNTIL NEW PLANTS DEVELOP. BARE SPOTS MUST BE RE -LIMED FERTILIZED, MULCHED AND RESEEDED AS SOON AS POSSIBLE. YEARLY REFERTILIZATION MAY BE REQUIRED TO MAINTAIN. MM DESIGN � ENbINfERIN6 P.G. P.O. BOx 1470 KITTY HAWK, NC 27949' (252) 261-6714 s�o= o � w a N z m w r E � � U � � � u C a s � � N Z _ h nl tt u1 m r~ DATE 8-15-06 DR4WN MAM FILE NO. 020806 SHEET 2 OP 2