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Home My WebLink About20140843 Ver 1_Stormwater Site Plans_20151030I he area i or -the Rio reten-mon ceus are LoCayea, in une HAYWOOD RENTALS proposed f RL locations, In -situ soil in -Ffiltration rates WILL not, he know until the FILL is placed; therefore, under drains are DB 484/PG 2250 added to ensure adequate drainage per DWR. <c f / OURB �Tll TAKER GROUND LEGEND. TEMP SEDIMENT TRAP WITH BAFFLES M- 0 Df -H. DR LN j'E AREA S-',-, - FENCE NEW CONTOURS --- ------ Q900�-- EX: StING SEEDED Kamm= AREA FLC'W DIRECTION CONSTRUCTION EN7'RAC,E ROCK CHECK BASIN S SKIwMER BASIN W17-i BAFFLES TER/PORARY DIVERSION HANDIC4P PARKING SPACE TRAFFIC FLOW DIRECTION UNDER "BRAIN CLEAN OUT LAKE JUNALUSKA ASSEMBLY DB 640/PG 654 0 20 40 60 80 100 END OF SURVEY END DRAINAGE SYSTEM JULE NOLAND DRIVE 1". I <: z 12: CL E--] APER CURB TO EXISTING GROUND r`�a j,j,� FA BOTTOM ELEVA I IUN Ebb e- 1 1,�,Ur1HKUt- il'41LJ IrIL- Wr -ILHINIJ U3r-IJ rUK H BOTTOM ELEVATION STONE/UNDERRAIN LAYER 2578,7 SUSTAINING THE VITALITY OF THE WETLAND VERIFIED SHWT 2573,6 EMERGENCY OVERFLOW STORM WATER 3'X6, BOX 15.00 OUTLET TOP EL 2584,5' TOP ELEV 258405 A EMERGENCY 0 UTF L 2584' 01'5 ��W" BOTTOM ELEV 2577,25 7,25 GENERAL NOTES, USE CLASS 'B' CONCRETE THROUGHOUT OUTLET DETAIL 4u < < ELEVATION VIEW FLOW FROM DRAINAGE AREA 2585 a ` 1)M M 725 GRAVEL �3-5' FESCUE OR BLUEGRASS SOD TOP OF FILL .t-- BUT NOT LESS THAN 12' NOR MORE THAN 24® UNSL'TABLE MATERIAL FOUNDATION GENERAL NOTES: LD. = THE MAXIMUM -ORIZONTAL INSIDE DIAMETER DIMENSION 0,I), = THE MAXIMUM HORIZONTAL ORIZONTAL OUTSIDE DIAMETER DIMENSION H = THE FILL HE "HT MEASURED VERTICALLY AT ANY POINT ALONG THE P:-"E FROM THE TOP OF THE PIPE TO THE TOP OF THE EMBA'�KMENT AT THAT POINT, DO NOT OPERATE HE-�VY EQUIPMENT OVER ANY PIPE CULVERT UNTIL THE PIPE CUL,/ERT HAS BEEN PROPERLY BACKFILLED AND 1OVERED WITH AT LEAST 3 FEET OF APPROVED MATERIAL, LOOSELY =LACED SELECT MATERIAL CLASS III OR CLASS II, TYPE 1 FOR PIPE BEDDING, LEAVE SECTION DIRECTLY BENEATH PIPE UNCOMPAC-ED AS PIPE SEATING AND BACKFILL WILL ACCOMPLISH C 0 M P A C T 1% --------------- SPRINGLP',A,--- OF PIPE SELECT I AC FKFILL MATERIAL CLASS III OR CLASS II, BELOW P R I N G L APPROVED SUITABLE LOCAL MATERIAL ABOVE SPRINGLINE UNDISTURBED EARTH MATERIAL SELECT 111,4TERIAL CLASS V OR VI FOR FOUNDATION CONDITIONING, ENCAPSULTTE WITH ENGINEERING FABRIC 99 Kammmm W (711 CL (y) Z- co cd <: 00 Ljj Z- CL l0 l El <: c) �.D <: (4 <E 0 0 LLJ CJ') � >- LD I z � LIJ a- C3 a- � co > CIL/ pq 0j LIJ <1 CIL/ = r-� CL CL d 0.5 X D MIN -� A� THICKNESS 'V) - 1,5 X MAX ROCK DIAMETER - 6` MIN ROCK d50 50% SHALL BE LARC -ER THAN MIN CIA R, PL AN i_.EVATIEN X a LP 1 1_ V c'58 > TJP EL' v 4 IN _E- rl;'._VERT 3F TOM LL:_ V 6 BUT T E,M 5> ,; r5 B.'_�RE ENTIUN #2 ELEV 2575 33 OUTLET TNTU WETLAND ELEV 2574 INLET CULVERT BIORETENTION #3 ELEV 2574.71 1 n n _- ,r�wAY SCHEDULE �B ,AI,"':N BASKE.! WALL -. 5 . '.9 CB 1-2, 0-1 L E ❑EE SPREADER DET ❑E PARKING LOT SW 3 7 -12 °15 ADD PIPE DETAIL CENTER OF ROADWAY 7% 9 Slopes between 2:1 and 3 :1, with a slope length of 10 ft. or less a _ e Slopes 3:1 or flatter, with a slope of length of 50 1t. or less - - - -- - _ NOTES; 1. 1a = LENGTH OF APRON, DISTANCE La SHALL BE OF SUFFICIENT v.ENGTH i[S�i "'ATE ENERGY. Q.5 4rj 2. APRON SHALL BE SET AT �c, ,r�wAY SCHEDULE �B ,AI,"':N BASKE.! WALL -. 5 . '.9 CB 1-2, 0-1 L E ❑EE SPREADER DET ❑E PARKING LOT SW 3 7 -12 °15 ADD PIPE DETAIL CENTER OF ROADWAY 7% 9 Slopes between 2:1 and 3 :1, with a slope length of 10 ft. or less a _ e Slopes 3:1 or flatter, with a slope of length of 50 1t. or less - - - -- - _ NOTES; 1. 1a = LENGTH OF APRON, DISTANCE La SHALL BE OF SUFFICIENT v.ENGTH i[S�i "'ATE ENERGY. Construction Methods 2. APRON SHALL BE SET AT ZERO GRADE AND ALIGNED STRAIGHT: 3. FILTER MATERIAL SHALL BE FILTER FABRIC OR 6' THICK MINIMUM GRADED Li- - "EL AYER. PIPE CULVERT SIZE ( 15 1.8 24 30 (IN) -.. - ... -- APRON WIDTH 5.0 6.0 B (FT) O STA i IC1NS 4 +75 TO 6 +70 APRON LENGTH 7,50 9 12 5 (FT) Chariot; Nordic; rhino; Warwick; Firefly; Oxford; Scaldis 11; Heron; Reliant 11; RIP RAP STONE 6 6 6 r� 0 THICKNESS (IN) Spartan 11; Minotaur; Reliant IV; Stonehenge Fill baskets with 6" nominal size rip rap; arranging the rip rap to SYNTHETIC 4 6 10 :6 2711 FILTER minimize voids. Secure the baskets with galvanized steel wire. BLANKET (SY) i 4093 3618 ❑E R❑ L)T ❑ ❑❑ L.1R AT PLI� *USE WITH ALL RIPE OUTLETS WEIR LENGTH j IJRA NAGE AREA W ❑R ! ❑TH (ACRES) CET) i 4,00 i i 2 ❑00 3 8,❑ _. 4 10,00 _ S i ❑CO - -- ❑ ❑ ❑ F L F_ ❑ `❑ E_ ��` UVERF IL_ 6° TRUCFURAL STONE FOR SETTL-1-1-YEN T )KUSE WITH DRAINAGE AREA #4 ❑❑ ❑ S ❑ ❑ ❑i ❑Y ❑❑ ❑❑ \❑❑❑ EMERGENGY BY -P-_` 6 °-7 UW" SOTLED TOP ATURA: _IRD!NI) Washed Stone ASIM C:b15 /(_b15lVl Stage ,torage Volume Ualcu(ation i able Alpine; Banns; Lnvicta; Kugby; Apollo; Bedazzled; Impact; Kugby 11; Arcadia; Rip Rap ASTM C615/C615M Bordeaux; Kenblue; Showcase; Arrow; Champagne; Midnight; Sonoma; Award; 10/26/2015 ❑ n L.�l__. Z 00 CU 00 ❑ u L_1 ED COUNTYI HAYWOOD Chicago 11; Midnight 11 Construction Methods Drainage Area, Elevation _ Surface Area (sf) Incremental Volume (cf) Cumulative Volume (of) I Approved hard Fescue Cultivars: Grade a 5' wide area for the foundation stone. Place 6 -8" of 1 less than 2582 operating volume 0 O STA i IC1NS 4 +75 TO 6 +70 washed stone as the wall foundation. Construct baskets to a Chariot; Nordic; rhino; Warwick; Firefly; Oxford; Scaldis 11; Heron; Reliant 11; dimension of 4 feet wide by 5 feet deep by the specified length. 2582 2278 0 0 Spartan 11; Minotaur; Reliant IV; Stonehenge Fill baskets with 6" nominal size rip rap; arranging the rip rap to 2583 3143 2711 2711 minimize voids. Secure the baskets with galvanized steel wire. 2584 4093 3618 6329 Fertilizer shall be 10 -20 -20 analysis. A different analysis of fertilizer rnay be Stack baskets to the specified height offsetting each subsequent 2585 5111 4602 1(}931 used provided the 1 -2 -2 ratio is maintained and the rate of application adjusted to rove by 1 % '. Backfill with 6" of stone. over 2585 freeboard 0 10931 provide the same amount of plant food as a 10 -20 -20 analysis and as directed. CONSTRLCTION SCHEDULE Drainage Arc-a Elevation Surface Area (sf) Incremental Volume (cf) Cumulative Volume (cf) TEMPORARY SEEDING: _ Peak F (ow Calculations 1. Obtain F`iosion Control Permit and other- applicable permits prior to the start of grading. 1 year 24 hour storm 2 less than 2582 o erating volume 0 0 Fertilizer shall be the same analysis as specified for Seeding and Mulching and 2 Install rain gaLrge in an accessible area. Dedll-ate a log book to record rain events and weekly inspections. Q =C )KI *A 2582 3171 0 0 applied at the rate of 400 pounds and seeded at the rate of 50 pounds per acre. 3. Maintain the temporary ravel construction entrance from base 1. p y p 2583 3937 3554 3554 German Millet, or Browntop Millet shall be used in summer months and rye grain 4. Stake area around remaining wetland for perimeter protection fence. Drainage 2584 4774 4355.5 7909.5 during the remainder of the year. The Engineer will determine the exact dates for 3 Uianliali� install a perimeter protection fence around the delineated wetland. No equipment is allowed p p Area C I (in/hr) A Q - - - - using each kind of seed. within that is not to be disturbed. Pre Development 2585 5 5229 13138,5 ll silt wetlandt all locations 4. Ins s shown on plan sheet. Silt fence shall be manually installed along the t over2585 freeboard 0 13139 FERTILIZER TOP1 RESSING: - outside of the 10 foot: wetland buffer. 1 035 0.107 0.99 0.037 5. Layout the areas for the construction of the temporary skimmer basins. 2 0.35 0.107 1.2 0.045 Drainage Ar�-a Elevation g Surface Area sf ( ) Incremental Volume cf ) Cumulative Volume cf ( Fertilizer used for topdressing shall be 16 -8 -8 grade and shall be applied at the 6. Construct the temporary skimmer basins to I, appropriate dimensions. Construct the baffles in the 3 0.35 0.1017 0.86 0.032 3 less than 2582 operating volume 0 0 rate of 500 pounds per acre. �� different analysis of fertilizer may be used temporary skimmer basins. 2582 22(}0? 0 (} provided the 2 ®1 -1 ratio is maintained and the rate of application adjusted to T Establish temporary cover according to stabi_:�zation table schedule and the seeding schedule on ECP 2. p y g g 4 0.35 0.107 1.07 0.0 }4C} - � provide the same arnount of plant food as 16 -8 -8 analysis and as directed. 8. Seed, fertilize and mulch all exposed areas using the seeding schedule included on ECP2, adjusting to the 5 0.35 0.107 0.75 0.028 2583 2964 2582 2582 1 schedule for the season. All disturbed areas should be treated with ground cover within 7 to 14 calendar Post Development 2584 3842 3403 3403 SUPPLEMENTAL SEEDING: days of completion of grading activities according to the stabilization table on ECP 1 1 0.95 0.107 0.39 0.201 2585 4811 4327 7730 9. Once grading, is complete, install temporary Tilt fence around permanent drainage easement. over 2585 freeboard 0 7730 The kinds of seed and proportions shall be the sae as specified for Seeding and m 10. Stabilize drainage area 42 and #3 prior to construction of the dry detention basin. Construct storm 2 0.95 0.107 1.2 0.122 Mulching, and the rate of application may vary from 25# to 754 per acre. The water basins and outlet structures. 3 0.95 0.107 0.86 0.087 Draina e Apia Elevation g Surface Area sf ( � Incremental Volume cf ( ) Cumulative Volume cf ( ) actual rate per acre will be determined prior to the time of topdressing and the 1 1. Seed and fertilize areas. Stabilize drainage area #1 and 44 prior to construction of the bioretention cell., 4 0.95 0.107 1.07 0.109 4 less than 2583 operating volume O 0 Contractor will be notified in writing of the rate per acre, total quantity needed, . 12. ConstrLlet bioretention cell. Cover with sc�� as specified. 5 0.95 0.107 0.75 0.076 2583 3626 O _ 0 and areas on which to apply the supplemental seed. Minimum tillage equipment, 13. Re -seed and fertilize areas as needed consisting of a sod seeder shall be used for incorporating seed into the soil as to 14. Once vegetation has been established, rem,sve all temporary erosion control devices. Runoff Vo(ur•re Calculations; 2584 4472 4049 4049 prevent disturbance of existing vegetation. A clodbuster (bail and chain) may be Rv =O 05 -0,9 )KIa 2585 5389 4931 8980 used where degree of slope prevents the use of a sod seeder. V =3630RdRvA over 2585 freeboard 0 8980 Emergency Outlet Q MOWING: Q= CwLH ^1,5 The minimum mowing height on this project shall be six inches. 3'x6.5` box Cw L crest H (ft) Q (cfs) 3.33 8 03 4.4 Underdrain Overflow Structure Q Bloretention Cell Q =2,6E -5 KA NIL 133 1 15 0.25 6.2 Drawdown = Pending V/Q era Bloretention i Ponding required Height of z�o Drainage Depth, Surface water Thicknes Q= 2.3E -5' A Diameter Numberof I_ Area la Rv Rd A (acres) V (cu ft) inches °'ea Drainage Ksat* Provided above s of Soil H /L, x 10% of single Cleanouts, Ponding Drawdown ! 1 0.81 0.78 1 0.99 2822 9 3749 Area (in /hr) SA, A gravel, H Layer, L safety factor S n pipe, in 1/10 _sf Volume, cf , t hours 2 0.84 0.80 1 1.2 3506 9 4674 1 1 5111 2.75 2 0.18 0.005 0.011 4 5 6815 11' OVERFLOW DITCH 3 0.86 0.83 1 0.86 2580 - 9 3440 2 1 5684 2.75 2 0.20 0.005 0.011 4 6 7579 11 4 0.70 0.68 2 1, 07 2629 9 i 3506 3 1 4811 2.75 2 0.17 0.005 0.011 4 5 6415 21 1 4 1 5389 2.75 2 0.19 0.005 0.011 4 5 7185 11 soil type DsC, DiUsboro Loan )KUse with Drainage Area #4 10/26/2015 ❑ n L.�l__. Z 00 CU 00 ❑ u L_1 ED COUNTYI HAYWOOD