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Home My WebLink AboutSW1221002_Plansheet CL402.P2 - Grading/Drainage Plan_20230223 CONSTRUCTION 06 ENTRANCE CL904.P2 OWNER / DEVELOPER _ pa Greater Asheville Regional Airport Authority , m - ffa8=_ =NwN s pw 61 Terminal Drive Suite 1 Gresham Smith Fletcher, North Carolina 28732 Owner Contact: Michael Reisman GS-NC P.C. i N - An Affiliate of Gresham Smith N S�Rrc �,°_°_��- � _� / _ 8& �� _ Email: mreisman@flyavl.com / • L • / / o I \ W // e � s Suite 1950201 South College St. �o ys Charlotte, NC 28244 v 704.944.7970 =& / c5 \ A V A ��V A \ \ •� \ ry�o �S• NOTES: f �_ V A\ \\ \\ \V •• - / I - A �� o`" PROJECT IS TO BE COMPLETED IN -•° W�� V A V A A \ Q, \ \ V `" \ _� MULTIPLE PHASES. PROJECT IS TO \ \ \ \ \ \ I \ � ALWAYS MAINTAIN VEHICLE ACCESS \ o vv v v v I V AJ / a = aaa AVA TEMPORARY TREE 07 \ V / TO PUBLIC SAFETY BUILDING AND `'��, i «• \ SIDEWALK FROM PUBLIC SAFETY \ PROTECTION CL903.P2 \ \ \ g 1 \ \\ 1 CATCH BASIN PROTECTION BUILDING TO TERMINAL. \ \\ COORDINATE WITH CONTRACTOR , CL90 .P,2 (TYP.) �,\ \ ?> ® i �\ \ PHASING DRAWINGS. SILT FENCE 04 \ � V v {� A 1 SEE AIRSIDE CIVIL PLANS FOR ALL\/ / /\ .•A - p, =d dm \ \ CL904.P2 \\. �- -_ _ �,� �d`eaep • I I \ ?� I _ A �\ °_ E&SC MEASURES ON WEST SIDE OF Gresham AOA BOUNDARY LINES. 1,0 Smithp i CONTRACTOR TO IDENTIFY I \ \ -& • p - \ / LOCATION AND ACCESS POINTS OF \ CONCPr& 03 �TE WASHOUT �_ _ • / _ • �& I N' \\ CL904.P2 \ \ \ \ a> I �g=iz �$ F �$NN II \� �\ / / ANY TEMPORARY STOCKPILE ON SITE AND SHALL CONSTRUCT i° p 8w ) && I�= �d - - - r p - / �gN SILT SOCK TYP 02 STOCKPILE IN COMPLIANCE WITH N - I CL904.P2 / DETAIL 12/CL902.P2. l NPDES PERMIT Via= ��_ • m a - p 214, DOCUMENTATION _-� _LOCATION - � � FT s Hle hev REG IONAL AIRPORT A 12 TEMPORARY �� / „ "� �- ® -r • ° .. / / /� .2�3 / NOVA yam Asheville Regional CL902.P2 TOPSOIL - 10 ® ® ® ® ® • A / ° STOCKPILE _ l _ \ - (, • • I I / \1 /�h M sow , / ,� �.2130 ° Airport VV ' !e p \ gN 20 TEMPORARY POROUS CL905.P2 Terminal BAFFLE (TY °$ P.) ° Modernization 04 0 0 o I I I II I I \ 72�\ L / �\�\\� \ 61 Terminal Drive Suite 1 / �n / - - / ••• l p �� I II ° / \) /� Fletcher, North Carolina 28732 POND EMERGENCY 04 o N d -; °O ° I ° SPILLWAYo or O__4c CL905.P2 02/16/2022 � o / I - 10' BERM ELEV- 2124.00 GS Project#: 43483.02 I \ w 1 ) 1 ° 2123 2 6 INCH TEMPORARY 11 ° ° ° Wa g ° - - _ a`` \ - - - 212 SEDIMENT BASIN CL902.P2 o-o- / // \\\ / X + oO o 0 0 0 0 0 0 0 0o O o� 00� \ \ / SKIMMER WITH 1.5 INCH ��\\\`, CAR �'//x / o / m„ \ ' ORIFICE �� . •s•s•�� AOA BOUNDARY. SEE AIRSIDE CIVIL PLANS °° g ' m " AOA BOUNDARY. SEE AIRSIDE CIVIL PLANS X � p\ - p�F \ m _ FOR CONTINUATION OF E&SC MEASURES. SEDIMENT BASIN 1 o \ \\ _.° FOR CONTINUATION OF E&SC MEASURES. _„,;, o� m�> \ / .� no, / 6 goo $gg - - MAXIMUM DRAINAGE AREA = 5.20 ACRES _ / - \ / = SEAL °� °g �5 \ I ° ° REQUIRED VOLUME = 9,360 CF " ` ` - - / I 1 </ = 053149 = -� SITE �•�ciNE�•'��: �\ X PROVIDED VOLUME = 37,381 CF �� 1 \ 9 - _ ` = m REQUIRED SURFACE AREA = 7,924 SF �� qN..•..v0 \\ ° ° ° ° o ° o ° go>" N _ $ RECEIVING WATERS: /� D. H \\ \ J/ \ /o�= PROVIDED SURFACE AREA= 10,981 SF I( ° / \ \\ / /\/ / / l '0 2-YR WSE: 2121.43 // \I UNNAMED TRIBUTARY CREEK OF FRENCH j / / �� v X 10-YR WSE: 2122.47 / BROAD RIVER _2149 / // // / // /// / FRENCH BROAD RIVER, NCDEQ DIVISION OF - - - - - / / / / / / _ _ 1' I WATER RESOURCES CLASSIFICATION B // _ TE 'PORARY SEDIMENT / 1 / NATHAN HUDGENS, PE N - - _ _ _� _ _ y / / v / CL904.P2 B SI UTLET STRUCTURE / NC 053149 / N / III / / �� /�� // PROJECT LIMITS OF DISTURBANCE = 13.0 AC A -� / / 1 \\' I I i REVISION EXISTING STORM STRUCTURE TO BE TEMPORARILY / USED AS SEDIMENT BASIN PRINCIPAL SPILLWAY / I \ I \ NO. DATE DESCRIPTION \ E&SC GENERAL NOTES: RAISE RIM ELEV TO 2122.40 AND INSTALL TRASH RACK / I 1 02/16/22 ISSUE FOR CONSTRUCTION 1.5 INCH ORIFICE ELEV= 2117.00 I I I 2 03/09/22 ADDENDUM 02 o 1. SEDIMENT SHALL BE REMOVED FROM SILT FENCE WHEN REACHES 3 THE HEIGHT OF THE FENCE; / / /r / / v / cL� 1 I 3 o3 LEGEND /28/22 ADDENDUM 03 SEDIMENT SHALL BE REMOVED FROM ALL OTHER E&SC MEASURES AND CONTROL AS / / / I / / 1 \ 11 \ - - PROPERTY LINE RECOMMENDED BY THE NORTH CAROLINA EROSION AND SEDIMENT CONTROL PLANNING AND / / / / / v " 4 04/07/22 NCDEQ COMMENTS N DESIGN MANUAL, AND MUST BE REMOVED WHEN DESIGN CAPACITY HAS BEEN REDUCED BY 50%. - / \ I v \ \ BUILDING LINE 2. E&SC MEASURES SHALL BE IMPLEMENTED BEFORE EARTH-MOVING BEGINS. 5 05/02/22 AGENCY COMMENTS / / / / I / 1 I I 3. AREAS WHERE CONSTRUCTION°HAS TEMPORARILY/PERMANENTLY CEASED SHALL BE STABILIZED // // / / / / / 1 I 6 10/24/22 ASI 006 WITHIN 14 DAYS (7 DAYS FOR> 33/o SLOPES). / 01 21 - -2145- - EXISTING MAJOR CONTOUR 4. INSPECTIONS OF OUTFALLS/E&SC MEASURES SHALL BE CONDUCTED AT LEAST TWICE WEEKLY / / / I- a AND AT LEAST 72 HOURS APART. I / T / o - - -2146- - - EXISTING MINOR CONTOUR 5. VEGETATION, E&SCS, AND OTHER PROTECTIVE MEASURES SHALL BE REPAIRED, REPLACED, OR / // / V X / ' U MODIFIED WITHIN 7 DAYS OF BEING NOTIFIED OF AN ISSUE. I fl 1 $o NI 2145 MAJOR CONTOUR 6. CONSTRUCTION SHALL BE PHASED FOR ACTIVITIES THAT WILL DISTURB >50 ACRES. / / E - p 7. E&SCS SHALL BE DESIGNED TO CONTROL THE RAINFALL AND RUNOFF FROM A 10-YEAR, 24-HOUR � 2146 MINOR CONTOUR RETURN INTERVAL STORM. d' 8. TEMPORARY SEDIMENT BASIN SHALL BE PROVIDED FOR ON-SITE OUTFALLS THAT RECEIVE DRAINAGE FROM >5 ACRES. - - - - - - - STORM PIPE 9. SEDIMENT BASINS AND TRAPS SHALL BE DEWATERED AND ALL SEDIMENT TO BE REMOVED Q)- PRIOR TO REGRADING FOR PERMANENT PONDS. TEMPORARY SEDIMENT BASIN STRUCTURES AND � I I LIMITS OF DISTURANCE PIPES ARE NOT TO BE REMOVED OR CONVERTED TO THE PERMANENT STRUCTURES AND PIPES L UNTIL AFTER THE DRAINAGE AREA HAS REACHED FINAL STABILIZATION. STRUCTURES AND PIPES J SF SILT FENCE SHALL BE CLEANED OF SEDIMENT PRIOR TO CONVERSION TO PERMANENT STRUCTURES AND o PIPES. FS FILTER SOCK 10. IF BORROW OR WASTE MATERIAL IS REQUIRED OR GENERATED DURING GRADING OPERATIONS, ' Q U AN APPROVED EROSION AND SEDIMENT CONTROL PERMIT SHALL BE SECURED FOR THE BORROW TP TREE PROTECTION FENCE OR WASTE MATERIAL SITE PRIOR TO INITIATION OF ANY LAND DISTURBING ACTIVITY. - 11. ALL CATCH BASINS TO HAVE WASHED STONE IN SAND BAGS AS EXTERNAL PROTECTION. I \ \ \ 0 12. CONTRACTOR TO COORDINATE ALL UTILITY CROSSINGS TO ENSURE NO CONFLICTS WITH I \ \ \ \ RIP-RAP EXISTING UTILITIES. 1 \\ CONTRACTOR o TURF REINFORCED MATTING INSTALLAT ON O COORDINATE ANDCONS RU ACCESS I CT TEMPORARY ACCESS IN ACCORDANCE WITH NCDEQ TH ENGINEER OR TO g$"$ INTERMEDIATE M REGULATIONS. E&SC PLAN FINAL STABILIZATION SEDIMENT BASIN MAINTENANCE NOTES: 1* 1. INSPECT TEMPORARY SEDIMENT BASINS AT LEAST WEEKLY AND AFTER EACH o SIGNIFICANT (2 INCH OR GREATER) RAINFALL EVENT AND REPAIR IMMEDIATELY. ALL DISTURBED AREAS TO BE STABILIZED WITHIN 14 DAYS AFTER CONSTRUCTION ACTIVITY HAS INLET PROTECTION 2. REMOVE SEDIMENT AND RESTORE THE BASIN TO ITS ORIGINAL DIMENSIONS WHEN IT I TEMPORARILY OR PERMANENTLY CEASED. O 0 ACCUMULATES TO ONE-HALF THE DESIGN DEPTH. STEEP SLOPES (33% OR GREATER) SHALL BE TEMPORARILY STABILIZED NO LATER THAN 7 DAYS CL402mP2 3. PLACE REMOVED SEDIMENT IN AN AREA WITH SEDIMENT CONTROLS. AFTER CONSTRUCTION ACTIVITY HAS TEMPORARILY OR PERMANENTLY CEASED. 4. CHECK THE EMBANKMENT, SPILLWAYS, AND OUTLET FOR EROSION DAMAGE, AND AREAS OF PERMANENT STABILIZATION TO BE SEEDED WITH KY-31 FESCUE AT 5 LBS PER 1,000 SF INSPECT THE EMBANKMENT FOR PIPING AND SETTLEMENT. STRAW MULCH AT 1.5 BALES PER 1,000 SF. 5. MAKE ALL NECESSARY REPAIRS IMMEDIATELY. 6. REMOVE ALL TRASH AND OTHER DEBRIS FROM THE RISER AND POOL AREA. EROSION CONTROL MATTING SHALL BE USED ON ALL SLOPES 3:1 OR STEEPER. 60' 0 60' 120' INTERMEDIATE E&SC PLAN 7. SEDIMENT BASIN EMBANKMENTS SHALL BE PROVIDED WITH ADEQUATE GROUNDCOVER IMMEDIATELY UPON CONSTRUCTION IN THE INITIAL PHASE OF GRAPHIC SCALE p SCALE: 1"=60' CONSTRUCTION AND CONVERSION TO PERMANENT STORMWATER DETENTION POND IN THE FINAL PHASE OF CONSTRUCTION. CONSTRUCTION DOCUMENTS I