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HomeMy WebLinkAboutSW8060651_APPROVED PLANS_20060808STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW DOC TYPE ❑ CURRENT PERMIT APPROVED PLANS ❑ HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION HOC DATE 2� YYYYMMDD STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE DOC DATE YYYYMMDD FIELD WERE MEASURED USING A F.W. BELL MODEL 4060 ELF METER THE READII I GS, IN GAUSS ARE SHOWN BELOW ON THE DRAWING. r REVISED 12 JULY 06 ENGINEER/SURVEYOR •� \ \ \,\• 4851 p8 H I �•\. F 342 % �/zo SOS""�c,(�� \'�•, \ ��`•\. 3 �. B Sn"C S \� 6t Ld 1 \ 1 IZ h\ OSHA DOES NOT CURRENTLY HAVE A STANDARD FOR ELECTROMAGNETIC EXPOSURE IN THE 27-30M Hz RANGE, (TRANSMITTED POWER IS 60Ht). IEEE (INSTITUTE FOR El ECTROT41CS AND ELECTRICAL ENGINEERS( DOES HAVE A STANDARD: IEEE PC95.6•2002 STANDARD FOR SAFETY LEVELS WITH RESPECT TO HUMAN EXPOSURE TO EL"OMAGEfIC FIELDS. 0 TO S kHz THE IEEE STANDARD PECOMMENDS AN EXPOSURE LIMIT FOR THE GENERAL PUBLIC OF 0.904 MILLREAAS, (I 1 MILLITESLA=10 GAUSS I THE EXPOSURE LIMIT IN GAUSS WOULD BE 90.4 GAISSL AS SHOWN, THE MEASURED MAGNETIC FIELD RANGES FROM 0.07 MILLITESLAS 70 0.01 MILLITESLAS- AS A COMPARISION, THE FLOURESCENI LIGHTING IN A TYPICAL OFFICE MEASURES 0,12 TO 0.05 MILLITESLAS. es, --`8[' �•�. �s�25 `i0» \ _ I7IV SITE ZONING CLASSIFlCATION RMF JI �\ EXISTI G PAVED ROADWAY 6577.53 SO. FT. TOTAL SITE = 5.93 ACRES � 1 COUNTRY CLUB APTS. WEST CARTERET HIGH SCHOOL i HIGHWAY 70 IF I I 6 LLI 9`/^ I M� SIZ IN N i \ I ----/-------------------------------------------/ --------A Y-------------------+---------------------------------------------------------- ---17-- --'-�-'-----1---------.r-c�-----a-�--.-.__----------------------- ROBERT M. CHILES, P.E. ENGINEERS & CONSULTANTS P.O. BOX 3496 NEW BERN, NORTH CAROLINA 28564-3496 (252) 637-4702 --- - - - - - - - 17 - - - - - - - - - - - - - - - - - - - - - OWNER/DEVELOPER FOUR SISTERS-00, LLC. P.O. Box 1018 MOREHEAD CITY, NORTH CAROLINA 28557 SITE DATA TOTAL AREA DEED BOOK 352, PAGE 416 = 5.41 ACRES DEED BOOK 702, PAGE 51 = 0.46 ACRES TOTAL SITE = 5.93 ACRES PARCEL 1 IS A PORTION OF TRACT 2, DEED BOOK 702, PAGE 51 TO BE ADDED TO TOTAL SITE. NOTE : THERE ARE NO WETLANDS WITHIN THE PROJECT BOUNDARY M Sid N 70'58�26"• W `91.0(VTOTAL (156.00' D.B.702, PG. 51) 9 TE TO MOREHEAD —> NORTH�N ",. MANPG ENT COMA DNISI N.OFCV, ARENDELL STREET i w / N okkFK SHEET I OF 4 EXISTING CONDITIONS WELLONGATE APARTMENTS COUNTRY CLUB ROAD FOR r FOUR SISTERS-00, LLC. MOREHEAD CITY _ CAR_TERET COUNTY NORTH CAROLINA DATE: 10-16-2°D6 ROBERT M. CHILES, P.E. JOB 2005139 ENGINEERS AND CONSULTANTS SCALE: 1' m so' NEW BERN, NORTH CAROLINA 1 L�L ILL', I 'o 0 A '.!. I , j at .5 •I ..1 a S. __ ....... .. 's ,_. -�`j: ! _ ._ ..t. air i'_ . L. .A .L..__, L sii L'i ,Aj:I- UgM1RY OLIIB A��TB. \ \ sa�oaL \� NOTE: ALL ROOF DRAINS TO BE DIRECTED TO THE STORMWATER COLLECTION SYSTEM 0 Lo!A G7 90 VICINITY MAP N/F COUNTRY CLUB APART M.C.C. -- ABBITT, L NOTE: CANOPY TREES REQUIRED ALONG FRONT PLANTED ALONG SIDE PROPERTY LINE DUE TO FRONT OVERHEAD POWER LINE 3 —3 T 1; 5 T-W T�2 woo + • COUNTRY cwe RpAb �6o R/W BIORETENTION PLANTING DETAILS 1"=30' df Fs 14� y'q6'1 40W Db� . it .0 NOTE: DUE TO OVERHEAD ELECTRIC U PLANTED ONLY. TREE T-3 GROWS EXCELLENT UNDER POWER LINE. N/F WEST HAVEN VILLAGE s _10 AQ� F� �� 9cF �FR IFS ce, Y TREES REVISED 12 JULY 06 IN 11 Z� v v a �` 0 J�j ^ � . / rry ry SHRUBS SYMBOL N0. BOTANICAL NAME COMMON NAME SIZE SPACING REMARKS S-1 Q 16 ILEX VOMITORIA 'NANA' DWARF YAUPON HOLLEY 3 GALLON AS SHOWN / 'NANA' 8' O.C. MIN. MULCH —PINE STRAW S-2 0 120 JUNIPERUS CHINENSIS SAYBROOK GOLD JUNIPER 3 GALLON AS SHOWN / 'SAYBROOK GOLD' ,,SAYBROOK GOLD' 6' O.C. MIN. MULCH —PINE STRAW S-3 36 4YPERICUM DENSIFLORUM ST JOHN'S. WART 3 GALLON AS SHOWN / 'SAYBROOK GOLD' ST JOHN'S WART 6' D.C. MIN. MULCH —PINE STRAW S-4 38 NIPERUS COMMUNIS COMMON JUNIPER 3 GALLON AS SHOWN / 'SAYBROOK GOLD' .COMPRESSA' 6' O.C. MIN. MULCH —PINE STRAW S-5 36 JUNIPERUS HORIZONTALIS CREEPING JUNIPER 3 GALLON AS SHOWN / 'SAYBROOK GOLD' BAR HARBOR 6' O.C_ MIN. MULCH —PINE STRAW TREES SYM80L 0. 001ANICAL NAME COMMON NAME SIZE SPACING REMARKS T--1 14 ACER RUI3RUM RED MAPLE 12-14' AS SHOWN MULCH —SHREDDED T-2 22 QUERCUS PHELLOS WILLOW OAK 12-14' AS SHOWN MULCH —SHREDDED T-3 19 PISTACIA CHINENSIS CHINESE PISTACHE 12-14' AS SHOWN MULCH —SHREDDED T-4 12 BETULA N1GRA RIVER BIRCH 12.-14' AS SHOWN MULCH —SHREDDED T-5 12 JUNIPERUS ARGINIANA EASTERN RED CEDAR 12-14, AS SHOWN MULCH —SHREDDED NOTE: EXISTING TREES & UNDERBRUSH TO AIN ALONG PROPERTY LINE FOR BUFFER (MINIMUM 10 VDE) W.H. & JOY W. MOORE RIGHT �F_ 1! a RAN ��Rp�IN� ��M;SSIp� o N� MP�PG�ME�� �oetlntl6rye,rea6br,,,s � p GIN BBgBOBBIiU41��?� r�T/oN I �,- ? 5: If v a[ .r, Ile LEGEND q)j PP = POWER POLE OHE = OVERHEAD ELECTRIC LINES 51TE DATA TOTAL AREA DEED BOOK 352, PAGE 416 = 5.41 ACRES DEED BOOK 702, PAGE 51 = 0.46 ACRES TOTAL SITE = 5.93 ACRES PARCEL 1 IS A PORTION OF TRACT 2, DEED BOOK 702, PAGE 51 TO BE ADDED TO TOTAL SITE. PHASE ONE = 24 2 BEDROOM UNITS PHASE TWO = 12 2 BEDROOM UNITS PHASE THREE = 34 2 BEDROOM UNITS OWNER / DEVELOPER: FOUR SISTERS-00, LLC. P.O. BOX 1018 MOREHEAD CITY, NORTH CAROLINA 28557 (252) 726-2151 rcty ENGINEER / SURVEYOR: ROBERT M. CHILES, P.E. I ENGINEERS AND CONSULTANTSSLi.. P.O. BOX 3496 °2 NEW BERN, NORTH CAROLINA 28564-3496 (252) 637-4702 SHEET 3 OF 4 BIORETENTION &LANDSCAPE PLAN AT WELLONGATE APARTMENTS COUNTRY CLUB ROAD FOR FOUR SISTERS--00, LLC. MOREHEAD CITY CARTERET COUNTY NORTH CAROLINA DATE: __10-18-2005 ROBERT M. CHILES, P.E. JOB NO. 2005139 ENGINEERS AND CONSULTANTS SCALE: — 1" 60'NEW BERN, NORTH CAROLINA ls�lly K4 l r,�sFs! rr 4. ri � '�► i r.I i -, S� !: 1}} I.ai , r 1_. _ { I II I .I. ��I ,e' .._ s.__�....____ -.. __: i _:7 _el!_;, '-"i 3'L 41 �.PY"1 37_'i'�i�`::.i:f�3'._^�S`.�.�4 EDGE OF PAVEMEN ir) TOP OF PAVEMENT L.=19.0 n_ 39' TO 50' EDGE OF PAVEMENT 25' TO 35± / 2"--3" MULCH w POI-Y/,1UTE EROSION CONTROL 8" DOMED OR 12" SQUARE / MATTING STAKER IN PLACE ON TOP FLAT TRASH GRATE / 2' WIDE GRASS SHELF tom- EL.=17. 6 8" 0 ROUND TYP,----- 't 12" ROUND WHERE INDIC NYLOPLAST DRAIN ENGINEER jSURVEYOR ROBERT M. CHILES, P.E. ENGINEERS & CONSULTANTS P.O. BOX 3495 NEW BERN, NORTH CAROLINA 28564-3496 (252) 637-4702 PLANTING SOIL D IN PLAN 12" 0 STORM DRAIN - INVERT 13.67 BI4RETENIION AREA N.T.S. NOTE: SEE PROJECT SPECIFICATIONS FOR EXPLANATION OF TERMS SUCH AS PLANTING SOIL, MULCH AND SOD WHERE REFERENCED ABOVE OWNER DEVELOPER FOUR SISTERS-00, LLC. P.O. Box 1018 MOREHEAD CITY, NORTH CAROLINA 28557 119.D 2' WIDE GRASS SHELF STORMWATER CALCULATIONS The overall project represents one drainage area as there is one final discharge point and it is in one riparian drainage basin. For the following calculations: Sic retention Area Size Required (9r) = 0.07 ("C") (Drainage Area) "C" Coefficient (Rational Method) WEIGHTING CALCULATION Drainage area = 168,677.37 sq ft = BUILDINGS 37987.60 0,95 36088.22 STREETS 32558.56 0,95 30930,63 PARKING 27088.95 0.95 25734,50 SIDEWALKS 16831.97 0.95 15990.37 GRASSIPLANTINGS 52210.29 0.75 39157.72 WEIGHTED"C"TOTALS 166677.37 147901,44 0.89, Required Size =.07 x "C" x Drainage area =0.07 X 0,89 X 166,677.37 = 10353.101 sq ft [10,490 sq ff PROVIDED] 0.238 Acres Drainage Area Runoff (SCS Method) SCS Curve Numbers (CN) Grass (Good Condition, Group C) = 74 Pavement = 95 Potential Abstraction (S): S = (I0001CN) -10 Grass S = 3.61 in. Pavement S = 0.52 in. Initial Abstraction (1a): la = 0.23 Grass la = 0.70 in. Pavement la = 0.11 in. Precipitation (P): P = 1 inch (design) Runoff (R) R = (P - la)2 I (P + 0.8S) Grass R = 0.06 in. = 0.005 ft. Pavement R = 0.56 in. = 0.0467 ft. Peak Runoff (SCS Type III Distribution, 24 hr Duration Storm, TR-55 Modeling) 1 year rainfall event 3.7 inches 10 year rainfall event 7.0 inches PEAK RUNOFF 24 HR STORM TR-55 MODELING 1" RAINFALL, P=1 INCH RUNOFF VOLUME CU FT RGRASS-1YR= 0.023193406100.2664 RIMPERVIOUS-1YR= 0.5633528275389.442 TOTAL 5489,708 CU FT 1 YEAR, P=3.7 INCHES RUNOFF VOLUME CU FT RGRASS-1YR= 1.3798267765965.068 RIMPERVtOUS-IYR= 3.13563890629997.8 TOTAL 35962,86 CU FT 10 YEAR, P=7.0 INCHES RGRASS-10YR= 4.0420668617474.08 RIMPERVIOUS-10YR= 6.40574841461282.03 TOTAL 78756.11 CU FT TREATED DRAINAGE AREA Surface Area: = 166,677.37 sq. ft. IMPERVIOUS: = 114,800.70 sq. ft. GRASSEDIPLANTED AREAS: = 51,876,67 sq. ft. Runoff Volume (SCS): = 5,621 cu. fL Grass = (0,005) (51,876.67) = 259.4 cu. ft Pavement = (0.0467) (114,800.70) = 5,3611 cu. ft. Ponding volume provided: = (la + 6 in) (1/12) (bioretention surface area) _ (6.7/12) (10490) = 5,857 cu. ft, OUTLET FLOW CALCULATIONS FIRST FLUSH RAINFALL 1" OF RAIN RUNOFF VOLUME FROM ABOVE = 5,621 CUBIC FEET SURFACE AREA OF BIORETENTION AREA 10409 SQ FT INFLOW RATE FOR SOILS = >6.0 IN/HR (WILL USE 4 IN1HR FOR CALCULATIONS) (AUTRYVILLE AuB FROM USDA SCS MAUAL FOR CARTERET COUNTY) NO RUNOFF FROM FIRST FLUSH RAINFALL ALL INFILTRATION, EXCESS RUNOFF ABOVE 1" RAINFALL I YEAR STORM 3.7 INCHES RUNOFF=35,962.86 CU FT FIRST INCH OF RAINFALL INFILTRATES AT 4 IN 1HR VOLUME INFILTRATED = 3467.69 CUBIC FTIHR OR 0.964 CPS WITHOUT RISER, SIORETENTION AREA WILL DRAW DOWN THE 1 YEAR STORM IN 10.4 HOURS THE 10 YEAR STORM IN 22.7 HOURS V� WITH RISER DRAWDOWN INCREASES TO 2.053 CFS / r, r V NOTE ELEVATION AREA TABLE ELEVATION AREA VOLUME NET VOLUME 17,67 10490 - - 18 Iti.11l 11984 _ r2�17 3741.9, 3741.9� 1,, i�yr 18.75 12593 9216.4 12968.3 19 12593 6296.5 19254.8 3 -cj� T GIVEW13" DIAMETER RISER Q=CA(2GHP.5 [ STORM DRAINAGE COLLECTION SYSTEM, STORM WATER POND WHERE COEFF,unitless)=0.6 t�3 1�y\,,;gENo�' AND EROSION & SEDIMENTATION CONTROL DEVICES SHALL BE A(AREA, SQ FT)=0.349066 ��, IN PLACE AND FUNCTIONAL PRIOR TO ANY CONSTRUCTION ON G(GRAVITY)=32.2��`'�-�� THE PARKING LOT H(AVERAGE HEAD, FEET)=0.4 ,*�*fs4' 4 1 DRAWDOWN WITH RISER �V}k`���� Lt NOTE: ALL ROOF BRAINS TO BE DIRECTED TO 1 YEAR 4.HOURS ��l�SIaN THE STORMWATER COLLECTION SYSTEM 10 YEAR 10.655 55 HOURS U10� SHEET 4 OF 4 6e4uu�v� REVISED 16AUG06 PER DWQ REQUEST DATED 15 AUG06 I i, •1, i�+' a1 ���•r L! 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