SW3130501_Ladera BMP Construction Plans_20200713

SHEET INDEX:
C1.0
SITE EXHIBIT
C1.1
NOTES SHEET .
C2.0-C2.3
SITE PLAN
C3.0-C3.1
NEW TOWN ROAD IMPROVEMENTS'
C4.0-C4.4
ROAD PROFILES
C5.0-05.3
GRADING PLAN
C5.4
PRE-DEV. DRAINAGE AREA MAP
C5.5
POST--qEV. DRAINAGE AREA MAP
C5.6-05.7
BMP PLAN
C5.8
BMP DETAILS
C5.9
BMP PLANTING PLAN
LAD RA SUBDIVISION
PHASE lA AND 1B (45 LOTS) ; PHASE 2 (25 LOTS)
UNION COUNTY, NORTH CAROLINA
C5. I 0-0511 DAM PLAN AND DETAILS - - - _
/ SS
C5.12 STREAM BUFFER IMPACT MAP / - c) 1 PROVIDENCE DOWNS SOg7H
a C6.0 STORM DRAINAGE AREA MAP /.. /", y' 1 1 DB s a8n'�c 9� I
z / / S / O PARCEL: 0622 57 .
C6.1-C6.5 STORM PROFILES / / 1 1
C7.0--C7.9 EROSION CONTROL PLANS 1
/ // /' V / r
1 C8.0-C8.4 DETAILS AND SPECIFICATIONS "70 � • .' / / O I A } \ LU€S F RODRIGUES ly / ,
'� fro / % IyAp 2 I / 1 \ DB 4022 PG 114 / I •
3 / / ' / V1D£NCt gOWN, So g77 1 / i \ \ PARCEL: 06225134 t / / 1 • t
PROVIDENCE DOWNS SOUTH MAP 3 / / / / ' I ,.' \ PRO PI.A•T CAB -1 I / } MARK AND BRENDA \ \ ' / I
PLAT CAB-" J FILE-463 / I / / JUDITH I . MAN • i ` III
/ / /' ! \ / DRUMMOND \ / D8 0631 PG 826
/ / \ i i OB 4362 PG 09fl \
/ Gj / r \ i \ RICARDO V€EGAS / ( PARCEL: 06225133 \ y / PARCEL: Q6225015 k ; 1
/ �/ 1 \ \ 1 I \\ I DS 4783 PG 258 / JEHRET AND RICARDO \ / N00"10'21"E 405.70' I
/ / 1 DENNIS AND DEBORAH / 1 I PARCEL: 06225131 / VIEGAS \ . j
VICINITY MAP: N.T.S. / / \ cnsNEr / \ 375.22
SHARON CHITTLE I D8 3981 PG 348 1 30.. `
OWNERL.CHARLES ER1C LEDOYEN {Charlie®preferredsettiementsusa.com) 1-1 / / / \\ 08 5317 PG 860 1 I \ OB 5760 PG 369 / �� - ROW T ' €
PARCEL: 06225163 / / I \ I / PARCEL: 06225132 Q : 1
/ SOUTHEAST SUILDING PARCEL: 06225124
/ / SERVICES LLC I \ (.••� I 71ANQ1 FANG \ I / j� Q
ADDRESS:9601 NEW TOWN ROAD, WAXHAW, NC 28173 ��� / -�`' / D8 5585 PG 868 DAMIONE AND SILVANA DB ANQI A G \ / --- 1 � U ? �:
' • O� . • / / 1 \ '' I LEWS i I
PHONE: [phone] ��5 • . / / PARCEL: 06225161 1 \ � • � I DB 4888 PG 024 � PARCEL: 06225123 \ 1 o � l � 0 C � ': CA c�i� �
JO . N/F LAND OF / / / / \ _ PARCEL: 06225132 \ o F y i §;4 `� ' V' : :
DEVELOPER: STANDARD PACIFIC OF THE CAROLINAS, LLC ICI PROVIDENCE DOWNS SOUTH / / 1 ... ..\ . r'• 1 1 \ F1 LOT 2 LOT 1 Q=w w p ' �" I o'
/ I .� � •,• 1 - I 2504.19' TOTAL LOT 3 1 z 44 ; W,
CONTACT: JOHN LOBERG (jloberg0stanpac.com) HOMEOYJNERS Assoc. INC. / / FLOT 4 25,475 SF ) j 26,001 SF ; m . mR
• • • • - • • '1 PROVIDENCE DOWNS SOUTt3 68 26>414 SF i € z
c DB 5348, PG 912 / S5/ I ••''•.• •.•••' .,•' 1 r 259• __- � I
ADDRESS: 11525 CARMEL COMMONS BLVD. SUITE 301, CHARLOTTE, NC 28226 \ / / H.O.A. 1 g0.D3' } �A F(23.975 Sj� (PHASE 1A) (PHASE 1A) (PHASE IA) a`QQ ,
PHONE: [phone] FAX: [phone] \ LOT 233 / / .•' : I •..• .�''� ....• ' I DB 5348 PG 912 � 1-F l j
•�•. • 1 / 195- j LOT 5 j PHASE 1A 1 ` 0. a iv
PLAT J FILE 4B 3 / `' ' ' ! -i,� �: ' i PARCEL: 06225155 79 y V �.:.V
\ TAX #062�� / / .�' • \•. • '•�'�• \ 6.41' LOT 6 23.962 SF y A:
CIVIL ENGINEER SURVEYOR: THE ISAACS GROUP, P.C. i:�CHEN€LEE SPECIALTY LLC \ 1 1 l w
- \ / / �`I' /69.74' ,�_ ----` [ . LOT 7 } 23,94s (PHASE 1A) 1 _ - ,
CONTACT: CHRIS ISAACS {cisaa0s®isaacsgrp.com) \ / •1.� DB 5444 PG 264 \ j i
• $720 RED OAK BLVD; SUITE 420, CHARLOTTE, N.C. 28217 p 1 �`I "I "• ' •.. • • • )• • PARCEL: 06225162 y •- --I � 23,935 SF 1
PROP. `-' - I
UTH MA \ _ _ / RovfbIveE•bowNs souTrl y LOT 8 1 (PHASE 1A)
ADDRESS. _ - _ ` 1 t r
E oovMs So^a51� - _\ _ - - - - _ - - - !_ - • .,. ; >... • H.O.A. I 1i0.88 ..r--- Cr h LOT 9 __ r
704 227-9400 FAX: 704 227-•9401 E1sc LE r _ 1, -14 24,990 SF (PHASE 1A) caTrr j
PHONE. { ) ( ) pPgvlo GAB_y Ft _ SS _ 55 S 1 tip1.5 } j
T j .- • j ' DB 5348 PG 912 /' t 1 24,981 - PHASE 1A j A - - - _ }
%} LOT 10 1
\\' ,� 1 1 �'� ........ �- •-� '� PARCEL: 06225160 1•W ✓ ` PHASE 1A
.� �. /. .. �• '' \ ' �� • • 08.23 2 q� y LOT 11 25,326 SF ( ) �J �1 €
DAM FLEMMMG / A j 1°
`� • 1 - LOT 12 1
.,.� * �;� ' \ : ti 25,498 SF PHASE 1A - -
S 52fl5 PG 618 •'•.''%•:,. /.•• l:'1: • i , • ... I I 1 { ) o� Q
7 ••�• \ �: LOT 13 26,663 SF j ?PARCEL: 0620 305 •• e / PHASE 1A R. _1( ) p RA :,:€
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A ON AND IdOLLIE ENGLE
DB 5348 PG 912 LOT 14
sT�• _
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PROP. Q
\ \
PARCEL: 06225117 $ i.• .....................:........ ::..::::...::.:: s.-,.:.:......,- 1 �' DEWAW 3' I
'. 28 336 SF B
at 1 PG 220 . S 6 � c,i x
- - STREET
\ .F E '" ., _._-- PLANTING- $TRIP
a
\ \ ARCE : 06207304
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1
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20 076 SF
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LOT 70
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TREET :.:....:..:::.:.:::.::• ::..:.:::..:.:- ':.:,:.:.:.:.:.:.:.,.:':.:...:' :.:':.:.;.:- { PHASE 1A
"' t ( ) 27,117 SF
LOT 16
4;.. : ,
TREE TAP. :.... b .. -.... ... o.............. r
LOT 26 21,500 SF , ..:.:-' ..,: ::.:..:.:.' :.:.:..:.:.. :.:.:..:.:. L PHASE 1 A PHASE 1 A o a
o 4 T. e ) } PHASE 1A
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22 2S4 SF / t:: rr::::::-:- ;:
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, 4 R1�fC . .... -.. i i
r// 22 282 SF
LOT 25 }LOT 65 �...-....
/ A -FTREi I
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.::::::.:::::... ...: .:: / 24 002 SF
PHASE toi PHAS 1A
PHASE 1A
7,735 SF
�' r ( \ \� \
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LOT s4 ,
HASE 1A :r0.-
Q
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27 320 SF
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S.L PHASE 2
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23 643 SF PHASE 1
/ / / 1 .
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.. ... .. .... .. . . . .. . . . .. .. . .. . 24 3S1 SF PHASE 2 � , . r
A AN SUZAN
LOT 27 o STREET
ASOV LE D € \ } 1
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t 1 1 :':.'.„:��;r:�`::':=�`s>`'.-:'s��:>:"s�'':;` =z�'; ` LOT 44 t �` �- 25 300 SF /\j 1j
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24 995 � / \ Av
4 07 S... 807 . AC .... ... ..... .. 1 L_
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PARCEL: 062073Q3 \ e
PHASE 1A
/ PHASE 2 � '` .
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24 91$ SF �:� x
rA � , �� / ` MULTI�•USE I � O'
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PHASE 59
AR SHARD �: C OL � �
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LOT 28
SIDEWALK 25 300 SF ':` : ::�::::'�`::::`=:` .:�::'• = :. .. _%� :�'.�:``-`f ; .•:.:a:i:::.. � .. :.. ,.. _... .: ,. !
4 3 PG 08t � \ ,�
p8 9 0 \ 45124 SF i.I
:. P / OPEN' SPACE
S L PHASE 1 LOT 48 -I ru
PARCEL: 062fl7302a LOT 42 :.:.:..:.- YA
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25 368 5f , . ✓ \ 1
/ PHASE 2
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1 A
23 5S6 SF
iv 0 26 439 SF
PHASE 1A :Ia
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/ 2 85?AC.
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\� 27 017 SF I
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\ 1 25 212 SF
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24,008 Sf 1
/ / LOT 22 23 6so sF \ _-- -- .... jI 1 ...... ., ,♦ q - i -
T LO 41 °� //y�,a
PHASE 2
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/ / 2, / �'o
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12 F �-
p 47
LOT 20
A 26 2 S -� a
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/ LOT 29 PHASE 1 - {{
PHASE 1B 1
A CEL 06207301 ¢o. ( I-' A
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( ) 23 825 SF •r T LO 49
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0 2136 S ,� �•
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/ o PHASE 1B �'g 24775 SF
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y PARCEL: 06207340 / / > R : THE {rYPy 4 TRAIL - #s a
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32 272 SF / r ' •a:': `' / LOT 37
- s / •�o l •- I PHASE 2 -� \
Gt' ��`"•' i'i \ PHASE to / 23,728 SF 1 ( } - .� ^---^�
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PARCEL: 06207299 1
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PLANTING STRIP i
PHASE 1A I
DB 3903 PG 844
( ) /
END 30.957 SF � ' It 1
35 373 SF 31 510 SF ,
-f LOT 51
1 WA I
PARCEL: 0524 298 /
SIDE LK
C � � T 54 LO (PHASE 2 n
j £
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/ LOT 53
23 221 Sf (( !25,388 SF x
j PHASE 16 I I
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/\ ( LOT 52
a . \ LOT 38 _ _:
0 22 979 SF
/ .s r
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' LOT 32 -:.: < - ,.• :.: ':. ;.'_ �.-�::'%;': 1 � •:,,: `. ...... { ) LOT 55 � Q
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35 907 SF
I I PHASE 2
LOT 34 ( ) 39 728 SF 34 839 SF
9 833 SF PHA 16 t
3 S£
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LOT 33 l ( )
. i 34 701 SF • � 1 �f
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ASE 1A / .'•'�:.'':`!s`;.: jj PHA 2
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/ Ds. 858 PG ass / I �. ..., 1T5.32' , :• .. • :,
j UNION COUNTY (H.O.A) I DB 5025 PG 232 I PARCEL: 0620739 08 3846 PG 8r3 �•:•' .••'•' •'•••... •...••'•( NANCY EDWAR05 I 281 i ••` :.,., AG})
I 10.33 1 105.11 ... •. . _. .... ,
/ PARChL: 06207295 / PAUL WUEkSLIN DB 4692 PG 034 . . `..• ;•, I THE RESERVE :, 737.26
/ DS 3735 P� 790 pARCEL: 06207263 DB 5469 PG 444 I I DB 3811 PG 781 1 I STEVEN GARCIA I PARCEL: 0620%39S'I '''DAMES GRIMM I LORI CAiT�fCHI;EL.p�RCEL!�06207392 I NICHOLAS NRSH 1 OBK5344 PGE206 JOSEPM METRO (H p) :•
UNION COUNTY, 'v,I. • • • • • • • • • I - CI 11=TON GREEN / THE RESERVE IN 30.YJ
/ PARCEL: 06207294 I PARCEL: 06207400 I I PARCEL: 06207398 06 4720 PG 891 I I DS 4213 PG 167.1 I D8 5759 PG 873 PARCEL: 06207390 FARCE $806207389 fl PDB ARCE��,E62b�, �8 1. I ••� �8'•OGG 6 8 EN I 081 5480 1PC 258 I ��;78 PG Q4G 1 UNION COUNTY (H.O.A) ® 1'
/ II I I PARCEL: 06207396I I DB 4238 PG 244 PARCEL: p620739 �`'••: PARCEL: 06207391I I
/ I I I PARCEL: 062073941 1 I I PARCEL: 6620738A PARCEL: 06207386 PARCEL: US207385 DB 4692 PG 034 j .
\\\v, .i�/ // I I i I I I I I i I �•t•: `�': I•.... I ! r ,.lt • I I I I PARCEL: 06207374 1 I: .I
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NOTES 0 PP 0 D SKETCH -DEVELOPMENT DATA COMMON ARE4 CALCULATIONS PHASE 1A AND 1B PROP. DECORAT€VE/ORNAMENTAL
CLUSTER SUBDIVISIONS STANDARDS: THIS PROPOSED SINGLE FAMILY DEVELOPMENT SHALL BE DESIGNED ZONING. R-40 TOTAL NO. OF LOTS >20,000 S.F.=45 25' MAX. SETBACK SPACE LIGHT (PART) LT RNA
GUMM. AREA OF 45 LOTS=1,198,745 S.F. (27.51.9 AC.) SPACED 300' APART ALTERNATING 25' MAX. SETBACK
COUNTY: UNION COUNTY 1=ROM R/W ro ON BOTH SIDES OF THE ROAR
AND CONSTRUCTED IN ACCORDANCE WITH THE PROVISIONS OF THE UNION COUNTY LAND USE ORDINANCE FROM R/W TO
TAX PARCEL: 06225016C 06225340 06204017 sTREEr TREE PER UNION couNTr LAND
AS A "CLUSTER DEVELOPMENT" PER SECTION 187 AND ALL OTHER RELEVANT ORDINANCE REQUIREMENTS. LOT AREA REQ D FOR 45 LOTS=45(40 000)=1 800 DOD S.F. (41.322 AC.) STREET TREE
MIN. LOT WIDTH SHOWN: 98 FT. , ' > ' USE ORDINANCE SECTION 187 (J) 40' PRIVATE R/W 1O' UTILITY
COMMON AREA REQ D�1,800,000-1,198,745=601,255 S.F. (13.803 AG.) 10' UTTLrrY
PRIVATE ROADWAY MAINTENANCE: MAINTENANCE OF THE PRIVATE ROADWAYS WILL BE THE RESPONSIBILITY MIN. SETBACK; 25 FT. COMMON AREA PROVIDED=608,271 S.F. (13.964 AC.) > 601,255 S.F. (13.803 AC.), THEREFORE O.K. EASEMENT EASEMENT -Y�
OF THE HOMEOWNER'S ASSOCIATION THAT WILL BE FORMED BY THE DEVELOPER IN ACCORDANCE WITH THE MIN. REAR YARD: 25 FT. 20' (MIN. 20' (MIN.) J
UNION COUNTY LAND USE ORDINANCE SECTION 67. MIN. SIDE YARD: 7.5 FI'. �'1 ­1
DENSITY CALCULATION PHASE i : "''^" 13'-0" 13'-0" �
STDEWALKS -THE NUMBER OF LOTS SERVED, LENGTH OF STREETS AND GEOMETRY SHOWN SUPPORT ALL TOTAL PROJECT ACREAGE: 69.979 AC. (3,048,328 S.F.) ^�'
PROPOSED STREETS BEING CLASSIFIED AS "LOCAL STREETS" IN ACCORDANCE WITH THE N.C. DEPT. OF . PROJECT AREA•=1,970,176 S.F. (45.229 AC.)
TRANSPORTATION SUBDIVISIONS ROAD STANDARDS DATED JULY 2010.. SIDEWALKS SHALL BE INSTALLED MIN. LOT AREA 20,000 S.F. CLUS REGULATIONS)
TER OPTION) AREA IN R/W=168
ALONG ONE SIDE OF ALL PROPOSED LQGAL STREETS (A5 SHOWN ON THIS PLAN) IN ACCORDANCE WITH THE 0,000 S.F. CLUS;635 S.F. (3.871 AC.) 11'-0" 11' D" .
UNION COUNTY LAND USE ORDINANCE SECTION 216 AND SECTION 187, PER UNION COUNTY LAND USE ORDINANCE MAX, DENSITY=(1,970,176-168,635 S.F.)/(40,000 S.F./LOT)=45.038 LOTS Z 45 LOTS, THEREFORE O.K. _ PLANTING CONCRETE
STRIP SIDEWALK
STORMWATER MANAGEMENT - IN ACCORDANCE WITH SECTION 187 OF THE UNION COUNTY LAND USE COMMON AREA CALCULATIONS PHASE 2 3/8" PER FT. 3/8" PER FT. I
ORDINANCE.
PR --DEVELOPMENT DEVELOPMENT DISCHARGE
& 25) ATE AT THE PROPERTY
F BOUNDARY
STORM EVELNI E EQUAL TO NUMBER OF LOTS SHOWN PHASE 1A AND 1 B: 45 LOTS (PHASE 1 AREA: 45.229 ACRES) --
RATE FORNUMBER OF LOTS SHOWN PHASE 2: 25 LOTS (PHASE 2 AREA: 24.627 ACRES) TOTAL NO. OF LOTS >20,000 S.F.=25 PROP. 24" VALLEY
TOTAL NUMBER OF LOTS SHOWN: 70 LOTS CUMM. AREA OF 25 LOTS=692,413 S.F. (15.896 AC.} CURB/GUTTER RESIDENTIAL STREET A -A 8" COMPACTED ABC STONE
JURISDICTIONAL SURFACE WATERS •-• AN ON -SITE DETERMINATION AND DELINEATION FOR THE PRESENCE OF ,
JURISDICTIONAL SURFACE WATERS WILL BE PERFORMED AND PROVIDED TO UNION COUNTY PUBLIC WORKS LOT AREA REQ D FOR 25 LOTS=25(40,000)=1,000,000 S.F. (22,957 AC.) PROP. RED MAPLE TREE 0 50' (TYPICAL SECTION) 1-1/2' S9.58 (FIRST LAYER)
PHASE 1 C.Q.S. PROVIDED: 608,271 S.F. 13.964 ACRES) COMMON AREA REQ'D=1,000,000--692,413=307,587 S.F. 7.061 AC. O.C. AS SHOWN ON PLAN "
(STORMWATER SECTION) FOR REVIEW DURING THI? CONSTRUCTION PERMITTING PHASE. ( ) 1 SF 9.5A (FINAL LiFrj
PHASE 2 C.O.S. PROVIDED: 310,163 S.F. 7.120 ACRES) COMMON AREA PROVIDED=310,163 S.F. (7.120 ACRES)>307,587 S.F. (7.061 AC.), THEREFORE O.K. (PER UNION COUNTY LAND USE COMPACTED SUBGRADE (100%
MULTI --USE TRAILS -•• MULTI -USE TRAILS SHALL BE CONSTRUCTED IN ACCORDANCE WITH THE UNION TOTAL C.O.S. PROVIDED: 918,434 S.F. 21.084 ACRES) ORDINANCE SECT. 187 (K) I AASHTO T99 MAX. DRY DENSITY)
COUNTY LAND USE ORDINANCE SECTIONS 187 (1) AND APPENDIX H AT THE APPROXIMATE LOCATIONS DENSITY CALCULATION PHASE 2• STREET TREES) I;O ; CONSTRUCTION OF PROPOSED
SHOWN ON THIS PLAN. PROP. DECORATIVE/ORNAMENTAL PRIVATE ROADWAYS SHALL BE IN FULL
PROPOSED ROADS PHASE 1: 3,541 L F. PROJECT AREA=1,072,751 S.F. 24.627 AG. 2V MAX. SETBACK STREET LIGHT (1YP.) APPROX. ACCORDANCE WITH THE NCDOT STANDARD
STREET LIGHTS -STREET LIGHTS SHALL BE INSTALLED AT A PEDESTRIAN SCALE AND LAMINATION TO ADD PROPOSED ROADS PHASE 2: 1,438 L.F. ( ) FROM R/W TO SPACED 300' APART ALTERNATING SPECIFICATIONS FOR ROADS AND UTILITIES. 25' MAX. SETBACK
CHARACTER AS WELL AS SAFETY ALONG THE STREET'SCAPE IN ACCORDANCE WITH THE UNION COUNTY LAND TOTAL ROAD LENGTH: 4,979 L.F. AREA IN R/W=70,336 S.F. (1.615 AC.) STREET TREE ON BOTH SLOES OF THE ROAD FROM T
PER UNION COUNTY LAND STREET TREEE
USE ORDINANCE SECTI 187 (J) AND AS SHOWN ON THIS PLAN. MAX. DENSITY=(1,072,751--70,336)/(40.000 S.F./LOT) F CTION 187 (J) PROP. RED MAPLE TREE O 50'
PROPOSED ROADS R/W AREA PHASE 1: 168,635 S.F. (3.871 ACRES) =25.060 LOTS 2 25 LOTS, THEREFORE O.K. 1EAASEME T LITY z 50' PRIVATE R/W 1QEMEENT o.c. AS SHOWN COUNTY
PLAN
STREET TREES - STREET TREES SHALL BE PLANTED THROUGHOUT THE SUBDIVISION ON EACH SIDE OF THE PROPOSED ROADS R/W AREA PHASE 2: 70,336 S.F. (1.615 ACRES 25' MIN. �' 25' MIN•} (PER UNION COUNTY LAND USE
STREETS IN ACCORDANCE WITH THE UNION COUNTY LAND USE ORDINANCE SECTION 187 (K) AND AS / ) LEGEND -/ ,� J ti ( ( �� ORDNANCE SECT. 187 (K)
TOTAL PROPOSED ROADS RAW AREA: 238,736 S.F. (5.481 ACRES) r� STREET TREES)
SHOWN ON THIS PLAN.
4 -0
" i 4'-0" 14'-0" y
ROADWAY NAMES - PROPOSED ROADWAY NAMES WILL REQUIRE WRITTEN APPROVAL FROM UNION COUNTY. UTILITIES: PUBLIC WATER AND SEWER ® 100' UNDISTURBED CONC.
UTILITIES - THE DEVELOPER INTENDS TO EXTEND PUBLIC SANITARY SEWER AND PUBLIC WATER LINES TO MILE CREEK BUFFER •-0 W •-0"
SERVE THE PROPOSED 70 SINGLE FAMILY RESIDENTIAL LOTS, BASED UPON THE PROPOSED SCHEDULE: p
A STRIP
PHASE I: COMMENCEMENT OF CONSTRUCTION: APRIL 2013 EXISTING POND
NUMBER OF PHASE I LOTS: 45 LOTS
12'-0"
12'-0"
P
3/8" PER FT. 3/8" PER FT.
-+-- --
ti• r.
, :,
4 -0
CONC.
3•_ .WALK '-0
-ANTING NO. BY I DATE
STRIP , 1 RER 6 24 13
2 RER 8 12 13
ESTIMATED PHASE I SEWER/WATER FLOW ® 360 GPD/HOME 16,200 GPD
PHASE It: COMMENCEMENT OF CONSTRUCTION: APRIL 2015
NUMBER OF PHASE II LOTS: 25 LOTS
ESTIMATED PHASE II SEWER/WATER FLOW 0360 GPD/HOME = 9,000 GPD
COMMON OPEN SPACE
PHASE LIMITS
PROP, 24" VALLEY
PROP. RED MAPLE TREE W.
O.C. A5 SHOWN ON PLAN CURB/GUTTER
(PER UNION COUNTY LAND USE
ORDINANCE SECT. 187 (K)
STREET TREES)
�F�I ("I AL STREET B-B
ICAL SECTION
ET`rP )
8" COMPACTED ABC STONE
1-1/2' S9.58 (FIRST LAYER)
1' SF 9.SA (FINAL LIFT?
COMPACTED SUBGRADE (10091 .
AASHTO T99 MAX. DRY DENS
3
RER
9 2 13
4
RER
2 5 i 4
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PROP. RED MAPLE TREE 0 50'
O.C. AS SHOWN ON PLAN
(PER UNION COUNTY LAND USE
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ORDINANCE SECT. 187 (K) GRAPHIC SCALE
STREET TREES) 100 0 5 1 0 200
1 INCH = 100 FEET
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NOTES FROM APPROVED SKETCH PLAN:
CLUSTER SUBDIVISIONS STANDARDS: THIS PROPOSED SINGLE FAMILY DEVELOPMENT SHALL BE DESIGNED AND CONSTRUCTED
IN ACCORDANCE WITH THE PROVISIONS OF THE UNION COUNTY LAND USE ORDINANCE AS A "CLUSTER DEVELOPMENT" PER
SECTION 187 AND ALL OTHER RELEVANT ORDINANCE REQUIREMENTS.
PRIVATE ROADWAY MAINTENANCE: MAINTENANCE OF THE PRIVATE ROADWAYS WILL BE THE RESPONSIBILITY OF THE
HOMEOWNER'S ASSOCIATION THAT WILL BE FORMED BY THE DEVELOPER IN ACCORDANCE WITH THE UNION COUNTY LAND USE
ORDINANCE SECTION 67.
SIDEWALKS - THE NUMBER OF LOTS SERVED, LENGTH OF STREETS AND GEOMETRY SHOWN SUPPORT ALL PROPOSED
STREETS BEING CLASSIFIED AS "LOCAL STREETS" IN ACCORDANCE WITH THE N.C. DEPT. OF TRANSPORTATION SUBDIVISIONS
ROAD STANDARDS DATED JULY 2010. SIDEWALKS SHALL BE INSTALLED ALONG ONE SIDE OF ALL PROPOSED LOCAL STREETS
(AS SHOWN ON THIS PLAN) IN ACCORDANCE WITH THE UNION COUNTY LAND USE ORDINANCE SECTION 216 AND SECTION
187.
STORMWATER MRNRGEMENT - IN ACCORDANCE WITH SECTION 187 OF THE UNION COUNTY LAND USE ORDINANCE, THE POST
DEVELOPMENT DISCHARGE RATE AT THE PROPERTY BOUNDARY SHALL BE EQUAL TO THE PRE --DEVELOPMENT RATE FOR THE
(2 & 25) TWO AND TWENTY FIVE YEAR STORM EVENTS.
JURISDICTIONAL SURFACE WATERS - AN ON -SITE DETERMINATION AND DELINEATION FOR THE PRESENCE OF JURISDICTIONAL
SURFACE WATERS WILL BE PERFORMED AND PROVIDED TO UNION COUNTY PUBLIC WORKS (STORMWATER SECTION) FOR
REVIEW DURING THE CONSTRUCTION PERMITTING PHASE,
MULTI -USE TRAILS - MULTI --USE TRAILS SHALL BE CONSTRUCTED IN ACCORDANCE WITH THE UNION COUNTY LAND USE
ORDINANCE SECTIONS 187 (1) AND APPENDIX H AT THE APPROXIMATE LOCATIONS SHOWN ON THIS PLAN.
STREET LIGHTS - STREET LIGHTS SHALL BE INSTALLED AT A PEDESTRIAN SCALE AND LAMINATION TO ADD CHARACTER AS
WELL AS SAFETY ALONG THE STREETSCAPE IN ACCORDANCE WITH THE UNION COUNTY LAND USE ORDINANCE SECTION 187
(J) AND AS SHOWN ON THIS PLAN.
STREET TREES - STREET TREES SHALL BE PLANTED THROUGHOUT THE SUBDIVISION ON EACH SIDE OF THE STREETS IN
ACCORDANCE WITH THE UNION COUNTY LAND USE ORDINANCE SECTION 187 (K) AND AS SHOWN ON THIS PLAN.
ROADWAY NRM£S PROPOSED ROADWAY NAMES WILL REQUIRE WRITTEN APPROVAL FROM UNION COUNTY.
UTILITIES - THE DEVELOPER INTENDS TO EXTEND PUBLIC SANITARY SEWER AND PUBLIC WATER LINES TO SERVE THE
PROPOSED 70 SINGLE FAMILY RESIDENTIAL LOTS, BASED UPON THE PROPOSED SCHEDULE:
PHASE 1: COMMENCEMENT OF CONSTRUCTION: JUNE 2013
NUMBER OF PHASE I LOTS: 45 LOTS
ESTIMATED PHASE I SEWER/WATER FLOW © 360 GPD/HOME = 16,200 GPD
PHASE ll: COMMENCEMENT OF CONSTRUCTION: APR€L 2015
NUMBER OF PHASE it LOTS: 25 LOTS
ESTIMATED PHASE 11 SEWER/WATER FLOW @ 360 GPD/HOME = 9,000 GPD
LAND DEVELOPMENT NOTES
1. COORDINATE ALL CURB AND STREET GRADES IN INTERSECTION WITH INSPECTOR.
2. ALL ROAD IMPROVEMENTS AT NEW TOWN ROAD ARE TO BE COORDINATED WITH NCDOT AND UNION COUNTY PRIOR
TO CONSTRUCTION.
3. DEVELOPER WILL PROVIDE STREET SIGNS PER UNION COUNTY STANDARD.
4. SIGHT TRIANGLES SHOWN ARE THE MINIMUM REQUIRED.
5. IN ROLLING AND HILLY TERRAINS, SWEEPING OF THE STONE BASE AND/OR APPLICATION OF A TACK COAT MAY BE
REQUIRED NEAR INTERSECTIONS, THESE REQUIREMENTS WILL BE ESTABLISHED BY THE INSPECTOR AND BASED ON
FIELD CONDITIONS.
6, APPROVAL OF THIS PLAN IS NOT AN AUTHORIZATION TO GRADE ADJACENT PROPERTIES. WHEN FIELD CONDITIONS
WARRANT OFF -SITE GRADING, PERMfSSION MUST BE OBTAINED FROM THE AFFECTED PROPERTY OWNERS.
7. IN ORDER TO ENSURE PROPER DRAINAGE, KEEP A MINIMUM OF 0.5% SLOPE ON THE CURB.
8. SUBSURFACE DRAINAGE FACILITIES MAY BE REQUIRED IN THE STREET RIGHT-OF-WAY IF DEEMED NECESSARY BY
THE INSPECTOR.
9. THE PURPOSE OF THE STORM DRAINAGE EASEMENT (SIDE) IS TO PROVIDE STORM WATER CONVEYANCE AND ANY
STRUCTURES AND/OR OBSTRUCTION TO STORM WATER FLOW IS PROHIBITED. UNION COUNTY WILL BE
RESPONSIBLE FOR STORM DRAINAGE EASEMENTS WHICH PROVIDE STORM WATER CONVEYANCE FROM THE PUBLIC
RIGHT-OF-WAY.
10. HIGH -DENSITY POLYETHYLENE (HDPE) STORM DRAINAGE PIPE INSTALLED WITHIN EXISTING OR PROPOSED PUBLIC
STREET RIGHT-OF-WAY MUST *FIRST BE APPROVED BY PUBLIC WORKS REPRESENTATIVE FROM THE COUNTY PRIOR
TO GETTING PLAN APPROVAL. BE APPROVED BY THE COUNTY'S INSPECTOR PRIOR TO ANY BACKFILL BEING PLACED.
1 1 , BACKFILL MATERIAL MUST BE APPROVED BY THE COUNTY INSPECTOR PRIOR TO PLACEMENT OF THE MATERIAL
WITHIN THE PUBLIC STREET RIGHT -OF-WAY.*IF PUBLIC WORKS AGREE TO HAVE THE PIPE INSTALLED THERE SHALL
BE A APPROVED BEDDING DETAIL AND A THIRD PARTY INSPECTOR SHALL VERIFY COMPACTION AND SUPPLY
WRITTEN EVIDENCE OF COMPACTION RESULTS.
12, THE DEVELOPER SHALL MAINTAIN EACH STREAM, CREEK, OR BACKWASH CHANNEL IN AN UNOBSTRUCTED STATE
AND SHALL REMOVE FROM THE CHANNEL AND BANKS OF THE STREAM ALL DEBRIS, LOGS, TIMBER, JUNK AND
OTHER ACCUMULATIONS.
13, ANY BUILDING WITHIN THE 100-+-1 BUILDING RESTRICTION FLOODUNE IS SUBJECT TO THE RESTRICTIONS OF THE
ORDINANCE IN THE GOVERNING JURISDICTION.
14. ALL OPENINGS (E.G., DOORS, WINDOWS, VENTS) IN STRUCTURES BUILT ON LOT #'S SHOULD BE LOCATED A
MINIMUM OF ONE FOOT ABOVE THE ADJACENT FINISHED GROUND SURFACE (APPLIES TO LOTS WHICH MAY
EXPERIENCE SIGNIFICANT OVERLAND FLOW NOT CONSIDERED IN THE 100+1 FLOOD ANALYSIS.)
15. "AS -BUILT" DRAWINGS AND PLANS OF THE STORM DRAINAGE SYSTEM, INCLUDING DESIGNED DITCHES, MUST BE
SUBMITTED PRIOR TO SUBDIVISION FINAL INSPECTION TO THE COUNTY ENGINEERING DEPARTMENT IN ACCORDANCE
WITH THE SUBDIVISION ORDINANCE.
16. AS-BUILTS FOR ALL APPLICABLE DETENTION STRUCTURES, AND BMP MEASURES ARE REQUIRED. AS-BUILTS ARE TO
INCLUDE LATITUDE AND LONGITUDE FOR CENTER OF MEASURE, AND INLETS AND OUTLETS OF ALL STRUCTURES.
ELEVATIONS ARE REQUIRED FOR ALL MEASURES AS WELL AS DIMENSIONS OF ALL MEASURES.
17. PRIOR TO CO, SURVEYOR SEALED AS -BUILT DRAWINGS OF UNDERGROUND DETENTION SYSTEMS MUST BE
PROVIDED,
18, NON-STANDARD ITEMS (IE: PAVERS, IRRIGATION SYSTEMS, ETC.) IN THE RIGHT-OF-WAY REQUIRE A RIGHT-OF-WAY
ENCROACHMENT AGREEMENT WITH THE (COUNTY/NORTH CAROLINA DEPARTMENT OF TRANSPORTATION) BEFORE
INSTALLATION.
19. PRIOR TO PLAT RECORDATION, OFFSITE R/W AND/OR CONSTRUCTION EASEMENTS ARE REQUIRED TO BE OBTAINED
ACCORDING TO THE GUIDELINES OF THE "OFFSITE R/W ACQUISITION PROCESS". THESE NEEDED R/W AND
CONSTRUCTION LIMITS ARE CLEARLY SHOWN ON THE ROADWAY IMPROVEMENT PLAN,
20. THE DEVELOPER SHALL CONTACT THE NORTH CAROLINA DEPARTMENT OF TRANSPORTATION TO IDENTIFY ANY
CONFLICTS WITH TRAFFIC SIGNALIZATION EQUIPMENT. DEVELOPER SHALL BE RESPONSIBLE FOR ALL RELATED
RELOCATION COST AND/OR ANY REPAIR COST CAUSED BY THE CONTRACTOR/DEVELOPER.
21. WATER AND SEWER SERVICE WILL BE PROVIDED TO EACH LOT BY PUBLIC MAINS OWNED AND MAINTAINED BY
UNION COUNTY PUBLIC WORKS.
GENERAL NOTES:
1. THIS MAP IS NOT A CERTIFIED SURVEY. BOUNDARY AND TOPOGRAPHIC INFORMATION PROVIDED BY THE THE ISAACS
GROUP,
2. THE UTILITIES SHOWN ARE FOR THE CONTRACTOR'S CONVENIENCE ONLY. THERE MAY BE OTHER UTILITIES NOT
SHOWN ON THIS PLAN; THE ENGINEER ASSUMES NO RESPONSIBILITY FOR THE LOCATIONS SHOWN. THE CONTRACTOR
IS RESPONSIBLE FOR LOCATING ALL EXISTING UTILITIES PRIOR TO COMMENCEMENT OF CONSTRUCTION. CONFLICTS
BETWEEN EXISTING UTILITIES AND PROPOSED EXCAVATION SHALL BE REPORTED TO THE ENGINEER IMMEDIATELY.
3. PROVIDE MINIMUM OF 48 HOURS NOTICE TO OWNER OR REPRESENTATIVE PRIOR TO INTERRUPTION OF ANY EXISTING
UTILITY, IF BEING UTILIZED.
4. THE CONTRACTOR SHALL USE EXTREME CARE WHEN WORKING NEAR ALL UNDERGROUND AND OVERHEAD UTILITIES.
THE CONTRACTOR IS RESPONSIBLE FOR REPAIR AND/OR REPLACEMENT OF ANY UTILITIES DAMAGED DURING
CONSTRUCTION,
5. THE CONTRACTOR IS RESPONSIBLE FOR ENSURING THAT ALL NECESSARY PERMITS AND APPROVALS HAVE BEEN
OBTAINED PRIOR TO CONSTRUCTION, THESE PERMITS AND APPROVALS MAY INCLUDE BUT ARE NOT LIMITED TO
GRADING, DEMOLITION, ZONING, BUILDING, DRIVEWAY, DETENTION, SUBDIVISION, SPECIAL USE, SEWER AND WATER.
6. ALL HANDICAP RAMPS, PARKING SPACES, ETC. TO MEET ALL A.D.A. CODES.
7. ALL DRIVEWAYS SHALL BE BUILT IN ACCORDANCE WITH THE UNION COUNTY LAND DEVELOPMENT STANDARDS AND
NCDOT STANDARDS,
8. ALL DESIGN, CONSTRUCTION AND CONSTRUCTION MATERIALS SHALL CONFORM TO UNION COUNTY, NCDOT AND
UNION COUNTY PUBLIC WORKS SPECIFICATIONS.
9, ANY SPRINGS DISCOVERED DURING CONSTRUCTION OF THE IMPROVEMENTS MUST BE ACCOMMODATED BY THE
EXTENSION OF THE STORM DRAINAGE SYSTEM TO PREVENT WATERS FROM FLOWING OVER PUBLIC SIDEWALK, CURBS
AND PAVEMENTS. THESE DRAIN EXTENSIONS SHALL BE DESIGNED BY AN ENGINEER AND INCLUDED ON THE RECORD
DRAWINGS.
10. ALL STREET NAMES AND SUBDIVISION NAME HAVE BEEN APPROVED BY UNION COUNTY GIS FOR PLAT
RECORDATION AND CONSTRUCTION APPROVAL.
t1. PROPERTY USE TO BE SINGLE FAMILY RESIDENTIAL.
12, ALL COMMON AREAS SHALL BE MAINTAINED BY THE PROPERTY OWNER'S ASSOCIATION. THE COVENANTS &
BYLAWS WILL BE SUBMITTED TO MATTHEWS FOR REVIEW AND APPROVAL PRIOR TO RECORDATION.
13. SIGHT TRIANGLE AT INTERSECTIONS OF ROADS WILL BE MAINTAINED FREE OF ANY MATERIAL INTERFERING WITH
SIGHT.
14. MAXIMUM POSTED SPEED LIMIT FOR ALL ROADWAYS INSIDE THE DEVELOPMENT 1S 25 MPH.
15. PROPOSED CELLULOSIC BURIAL SITES SHALL BE LOCATED ON THE FINAL PLAT.
16. UPON FINAL APPROVAL OF THE PLANS BY UNION COUNTY, UNION COUNTY PUBLIC WORKS A PRECONSTRUCTION
MEETING IS REQUIRED PRIOR TO START OF CONSTRUCTION.
17. THE CONTRACTOR IS RESPONSIBLE FOR REPAIR AND/OR REPLACEMENT OF ANY UTILITIES DAMAGED DURING
CONSTRUCTION. THE CONTRACTOR SHALL BE SOLELY RESPONSIBLE FOR LOCATION & PROTECTION OF EXISTING
ABOVE AND BELOW GROUND UTILITIES AND STRUCTURES. ANY AND ALL MAINS OR INDIVIDUAL SERVICES
PRESENTLY IN SERVICE WHICH ARE DAMAGED DURING CONSTRUCTION SHALL BE REPAIRED IMMEDIATELY AT NO
ADDITIONAL EXPENSE TO THE UTILITY OWNER. ANY AND ALL MAINS OR INDIVIDUAL SERVICES PRESENTLY NOT IN
SERVICE AND WHICH ARE TO BE REPLACED DURING THE COURSE OF CONSTRUCTION MAY BE REMOVED AND
LEGALLY DISPOSED OF IF DAMAGED DURING CONSTRUCTION.
18. ALL DIMENSIONS ARE TO BACK OF CURB UNLESS OTHERWISE NOTED.
19. PUBLIC ROADWAY CONSTRUCTION SHALL BE IN CONFORMANCE WITH THE MOST CURRENT EDITION OF THE NCDOT
STANDARDS AND PROCEDURES MANUAL.
PAVEMENT MARKING NOTES:
1, ALL PAVEMENT MARKINGS SHALL BE THERMOPLASTIC.
2. ALL PAVEMENT MARKING MATERIALS AND METHODS SHALL BE IN ACCORDANCE WITH NCDOT SPECIFICATIONS.
STABILIZATION TIME FRAMES
SITE AREA DESCRIPTION
STABILIZATION
TIME FRAME EXCEPTIONS
PERIMETER DIKES, SWALES, DITCHES AND SLOPES
7 DAYS
NONE
HIGH QUALITY WATER (HOW) ZONES
7 DAYS
NONE
SLOPES STEEPER THAN 3:1
7 DAYS
IF SLOPES ARE 10' OR LESS IN LENGTH AND ARE NOT
STEEPER THAN 2:1 14 DAYSARE ALLOWED
SLOPES 3:1 OR FLATTER
14 DAYS
7 DAYS FOR SLOPES GREATER THAT 50' IN LENGTH
ALL OTHER AREAS WITH SLOPES FLATTER THAN 4:1
14 DAYS
NONE, EXCEPT FOR PERIMETERS AND HOW ZONES
GRADING NOTES:
SITE PREPARATION:
LANDSCAPING NOTES:
1, THE UTILITIES AND THE LOCATIONS THEREOF, SHOWN ON THE DRAWING, REPRESENT THE DESIGNER'S UNDERSTANDING OF
1. NO 501E DISTURBANCE OR COMPACTION, CONSTRUCTION MATERIALS, TRAFFIC, BURIAL PITS, TRENCHING OR OTHER
EXISTING UTILITIES IN THE CONSTRUCTION AREA. THE CONTRACTOR SHALL VERIFY THE SIZE, LOCATION, INVERTS, DEPTHS,
PRIOR TO CONSTRUCTION, THE PROPOSED CONSTRUCTION AREA SHOULD BE STRIPPED OF TOPSOIL, ORGANIC
LAND DISTURBING ACTIVITY ALLOWED SN THE TREE PROTECTION ZONE, TREE BARRICADES MUST BE INSTALLED IN
AND EXISTENCE OF ALL UTILITIES (ELECTRICAL, MECHANICAL, WATER, TELEPHONE, GAS, ETC.) WITHIN THE CONSTRUCTION
MATERIAL, EXISTING UNDOCUMENTED FILL AND OTHER SOFT OR UNSUITABLE MATERIAL, UPON COMPLETION OF
ACCORDANCE NTH THE PLAN BEFORE ANY DEMOLITION, GRADING OR CONSTRUCTION BEGINS (IF APPLICABLE).
AREA WITH THE OWNER AND/OR THE APPROPRIATE UTILITY COMPANY PRIOR TO BEGINNING ANY EXCAVATION. THE
STRIPPING OPERATIONS, THE EXPOSED SUBGRADE IN AREAS TO RECEIVE FILL SHOULD BE PROOFROLLED WITH A
OMISSION OF OR THE INCLUSION OF UTILITY LOCATIONS ON THE PLANS IS NOT TO BE CONSIDERED AS THE
LOADED DUMP TRUCK OR SIMILAR PNEUMATIC --TIRED VEHICLE HAVING A LOADED WEIGHT OF APPROXIMATELY 25
R q
NON-EXISTENCE OF OR A DEFINITE LOCATION OF EXISTING UNDERGROUND UTILITIES.
TONS. AFTER EXCAVATION, THE EXPOSED SUBGRADES IN CUT AREAS SHOULD BE SIMILARLY PROOFROLLED.
2. FOR NEW PLANTING AREAS, REMOVE ALL PAVEMENT, GRAVEL SUB -BASE, CONSTRUCTION DEB 1S ND
COMPACTED SOIL PRIOR TO PLANTING.
2. THE DESIGN ENGINEER SHALL BE NOTIFIED WHEN FIELD LOCATED INFORMATION CONFLICTS WITH THE PROPOSED DESIGN.
SHALL BE APPROVED BY THE OWNER/ENGINEER PRIOR TO
PROOFROLLING OPERATIONS SHOULD BE PERFORMED UNDER THE OBSERVATION OF A GEOTECHNICAL ENGINEER OR HIS
3. REMOVE COMPACTED SOIL AND ADD 18" NEW TOPSOIL / PLANTING MIX OR UNCOMPACT AND AMEND TOP 24" OF
ANY NECESSITATING CHANGES, OR ADDITIONAL WORK
AUTHORIZED REPRESENTATIVE. THE PROOFROLLING SHOULD CONSIST OF TWO (2) COMPLETE PASSES OF THE EXPOSED
EXtSTtNG SOIL TO MEET TOP 501E STANDARDS FOR PLANTING TREES.
CONSTRUCTION.
AREAS, WITH EACH PASS BEING IN A DIRECTION PERPENDICULAR TO THE PRECEDING ONE. ANY AREAS WHICH
3, APPROVAL OF THIS PLAN IS NOT AUTHORIZATION TO GRADE ADJACENT PROPERTIES. WHEN FIELD CONDITIONS WARRANT
DEFLECT, RUT OR PUMP DURING THE PROOFROLLING, AND FAIL TO BE REMEDIED WITH SUCCESSIVE PASSES, SHOULD
BE UNDERCUT TO SUITABLE SOILS AND BACKFILLED WITH COMPACTED FILL.
5 ALL STRAPPING AND TOP 2/3 OF WIRE BASKET MUST BE CUT AWAY AND REMOVED FROM ROOT BALL PRIOR TO
OFF -SITE GRADING, CONTRACTOR MUST HAVE WRITTEN PERMISSION FROM THE OWNER(S) BEFORE PROCEEDING.
BACKFILUNG PLANTING PIT. REMOVE TOP 1/3 OF BURLAP FROM ROOT BALL,
4. ALL CONSTRUCTION AND CONSTRUCTION MATERIALS WITHIN COUNTY RIGHT-OF-WAY AND NCDOT RIGHT-OF-WAY SHALL
THE ABILITY TO DRY WET SOILS, AND THEREFORE THE ABILITY TO USE THEM FOR FILL, WILL LIKELY BE ENHANCED IF
6, ORDINANCE REQUIRED TREES MUST BE MAINTAINED IN TREE FORM & ALLOWED TO GROW TO THEIR NATURAL
CONFORM TO THEIR RESPECTIVE STANDARD SPECIFICATIONS.
EARTHWORK IS PERFORMED DURING SUMMER OR EARLY FALL. IF EARTHWORK IS PERFORMED DURING WINTER OR
HEIGHT/FORM, WITH A MAXIMUM OF THREE STEMS OR TRUNKS (NO TOPPING OR ROUNDING OVER).
AFTER APPRECIABLE RAINFALL THEN SUBGRADES MAY BE UNSTABLE DUE TO WET SOIL CONDITIONS, WHICH COULD
5, CONTRACTOR TO PROVIDE ALL EROSION CONTROL MEASURES AS REQUIRED BY LOCAL AUTHORITIES.
INCREASE THE AMOUNT OF UNDERCUTTING REQUIRED. DRYING OF WET SOILS, IF ENCOUNTERED, MAY BE
7 LARGE MATURING TREES MAY NOT BE PLANTED ADJACENT TO OVERHEAD DISTRIBUTION POWER LINES. IF TREES
ACCOMPLISHED BY SPREADING AND DISCING OR BY OTHER MECHANICAL OR CHEMICAL MEANS.
CONFLICT WITH POWER LINES, CALL URBAN FORESTER TO RESOLVE BEFORE PLANTING.
6. TOP SOIL TO BE STRIPPED AND STOCKPILED IN AREA DESIGNATED BY ENGINEER. ANY UNSUITABLE MATERIALS ON SITE
ARE TO BE QUALIFIED BY A GEO-TECHNICAL ENGINEER PRIOR TO REMOVING. CONTRACTOR MUST NOTIFY OWNER OR OWNER
IF EXCAVATIONS IN PORTIONS OF THE SITE ENCOUNTER VERY DENSE SOILS, PARTIALLY WEATHERED ROCK, OR
8 PROPOSED TREES SHALL BE A MINIMUM 8' TALL AND 2" CALIPER (MEASURED 6" ABOVE GROUND) AT PLANTING.
REPRESENTATIVE IN CASE UNSUITABLE MATERIAL IS UNCOVERED.
BORINGS AND/0R ADDITIONAL TESTING SHOULD UNDER OWNER'S APPROVAL BE PERFORMED TO FURTHER IDENTIFY
.
7. CONTRACTOR TO COORDINATE WITH GEO-TECHNICAL ENGINEER ANY SUBSURFACE DRAINAGE SYSTEMS TO BE €NSTALLED.
DEPTH TO PARTIALLY WEATHERED ROCK AND ROCK,
9. ALL SHRUBS TO BE A MINIMUM HEIGHT OF 24" WITH A MINIMUM SPREAD OF 24" AT PLANTING AND SHALL HAVE
A MAXIMUM SPACING OF 5' ON CENTER,
8, ANY GRADING BEYOND THE DENUDED LIMITS SHOWN ON THE PLAN IS A VIOLATION OF NCDENR EROSION CONTROL
EXISTING ISOLATED BOULDERS IN THE SOIL MATRIX OR ERRATIC ROCK CONDITIONS CAN SOMETIMES REMAIN
ORDINANCE AND IS SUBJECT TO A FINE.
UNDETECTED DURING FIELD EXPLORATION. IT IS RECOMMENDED THAT EQUIPMENT CAPABLE OF HEAVY EXCAVATION BE
10. ALL REQUIRED LANDSCAPING SHALL BE IN ACCORDANCE WITH UNION COUNTY LAND DEVELOPMENT ORDINANCE.
USED DURING GRADING ACTIVITIES. STORM WATER PIPING PLANS SHOULD TAKE INTO ACCOUNT THE EXISTENCE OF
9. GRADING MORE THAN ONE ACRE WITHOUT AN APPROVED EROSION CONTROL PLAN IS A VIOLATION OF NCDENR EROSION
DENSE MATERIALS AND ROCK PRIOR TO CONSTRUCTION.
11. NO TREES SHALL BE PLANTED WITHIN 10' OF A DRAINAGE STRUCTURE.
CONTROL ORDINANCE AND IS SUBJECT TO A FINE,
PARTIALLY WEATHERED ROCK CAN SOMETIMES BE EXCAVATED WITHOUT BLASTING. IN MASS EXCAVATION FOR GENERAL
12, USE OF MULTIPLE SPECIES OF TREES IS ENCOURAGED TO AVOID EXCESS LOSS TO DISEASE OR PEST, STREET
10. THE OWNER SHALL ARRANGE FOR INDEPENDENT GEO TECHNICAL ENGINEER TO PROVIDE INSPECTION SERVICES TO
SITE WORK, DENSE SOILS AND PARTIALLY WEATHERED ROCK CAN USUALLY BE REMOVED BY RIPPING WITH A
TREES SPECIES SHALL INCLUDE RED MAPLE, SCARLET OAK OR GREEN ASH. ALTERNATIVE SPECIES MAY BE USED SO
MONITOR COMPACTION OF FILL PLACED ON SITE.
SINGLE -TOOTH RIPPER ATTACHED TO A LARGE CRAWLER TRACTOR OR BY BREAKING IT OUT WITH A LARGE
LONG AS THEY ARE LISTED AS AN APPROVED STREET TREE SPECIES LISTED UNDER STREET TREE NOTES ON THIS
11. THE CEO -TECHNICAL ENGINEER IS RESPONSIBLE FOR ALL EMBANKMENT ACTIV€TY. THE FINAL REPORT Of ALL TEST
FRONT-END LOADER, SUBSURFACE MATERIALS WITH A STANDARD PENETRATION RESISTANCE VALUE OF 50/6, 50/5,
SHEET.
SHALL BE SENT TO UNION COUNTY FOR PART OF AS --BUILT AND BEFORE CERTIFICATE OF OCCUPANCY,
AND 50/4 INCHES OF PENETRATION CAN LIKELY BE LOOSENED AND RIPPED AS NOTED ABOVE,
STREET LIGHTS NOTE:
12, THE BMP'S ARE BUILT AFTER 997. OF PROJECT IS STABILIZED.
IN CONFINED EXCAVATIONS SUCH AS FOUNDATIONS, UTILITY TRENCHES, ELEVATOR PITS, ETC., REMOVAL OF PARTIALLY
BE CLASSIFIED AS ML, MH, SC, SM, CL OR CH SOILS ACCORDING TO THE UNIFIED SOIL
WEATHERED ROCK MAY REQUIRE USE OF HEAVY DUTY BACKHOES (SUCH AS A JOHN DEER 120C OR EQUIVALENT
1 STREET LIGHTS SHALL BE LOCATED AT EACH INTERSECTION, AT THE TURNAROUND OF EACH CUL-DE-SAC, AND
12. BORROW MATERIAL SHALL
EXCAVATOR EQUIPPED WITH ROCK TEETH), PNEUMATIC SPADES, OR LIGHT BLASTING. THE EASE OF EXCAVATION
ELSEWHERE AT THE INTERVALS OF NOT MORE THAN THREE HUNDRED (300) FEET ALTERNATING ON BOTH SIDES OF
CLASSIFICATION SYSTEM (ASTM D2487) OR ANY MIXTURE OF THESE SOILS,
DEPENDS ON THE QUALITY OF GRADING EQUIPMENT, SKILL OF THE EQUIPMENT OPERATORS AND GEOLOGIC STRUCTURE
THE ROADWAY. FIXTURES SHALL BE OF A DECORATIVE/ORNAMENTAL DESIGN WITH WIRING UNDERGROUND.
13. BORROW MATERIALS SHALL HAVE A LIQUID LIMIT (LL) BETWEEN 40 AND 60 AND A PLASTICITY INDEX (PI) BETWEEN 15
OF THE MATERIAL ITSELF, SUCH AS THE DIRECTION OF BEDDING, PLANES OF WEAKNESS AND SPACING BETWEEN
AND 30 {ASTM D4318}.
DISCONTINUITIES. THEREFORE, A CONSERVATIVE APPROACH CONCERNING BUDGET ESTIMATES FOR UTILITY AND STORM
OF COMMON AREAS IMPROVEMENTS AND FACILITIES NOT DEDICATED:
WATER POND EXCAVATIONS IS RECOMMENDED. SUBSURFACE MATERIAL THAT EXHIBITED A STANDARD PENETRATION
MAINTENACE
14. MATERIALS SHALL BE FREE OF TOPSOIL, ORGANIC MATERIAL, ROOTS, STUMPS, BRUSH, ROCKS LARGER THAN 3 INCHES,
RESISTANCE VALUE OF 50/3, 50/2, AND 50/1 INCHES OF PENETRATION OR LESS WILL LIKELY REQUIRE BLASTING FOR
A THE RECIPIENT OF ANY ZONING, SPECIAL USE, CONDITIONAL USE, MAJOR DEVELOPMENT, OR SIGN PERMIT, OR HIS
SUBSOIL, DEBRIS, VEGETATION, AND OTHER FOREIGN MATTER.
REMOVAL.
SUCCESSOR, SHALL BE RESPONSIBLE FOR MAINTAINING ALL COMMON AREAS, IMPROVEMENTS OR FACILITIES REQUIRED BY
THIS ORDINANCE WITH ITS PROVISIONS, EXCEPT THOSE AREAS, IMPROVEMENTS OR FACILITIES WITH RESPECT TO WHICH AN
15, ALL MATERIAL CLODS WILL BE BROKEN DOWN WITH TILLERS AND/OR DISCS TO PROVIDE A HOMOGENEOUS SOIL THAT IS
RIP ROCK: ANY MATERIAL THAT CANNOT BE REMOVED BY SCRAPERS, LOADERS, PANS, DOZERS, OR GRADERS; AND
OFFER OF DEDICATION TO THE PUBLIC HAS BEEN ACCEPTED BY THE APPROPRIATE PUBLIC AUTHORITY. AS ILLUSTRATIONS,
THIS MEANS THAT PRIVATE ROADS AND PARKING AREAS,
FREE OF CLAY CLODS GREATER THAN 3 INCHES IN DIAMETER.
REQUIRES THE USE OF A SINGLE -TOOTH RIPPER MOUNTED ON A CRAWLER TRACTOR HAVING A MINIMUM DRAW BAR
AND WITHOUT LIMITING THE GENERALITY OF THE FOREGOING,
WATER AND SEWER LINES, AND THE RECREATIONAL FACILITIES MUST BE PROPERLY MAINTAINED SO THAT THEY CAN BE
PULL RATED AT NOT LESS THAN 56,000 POUNDS.
USED IN THE MANNER INTENDED, AND REQUIRED VEGETATION AND TREES USED FOR SCREENING, LANDSCAPING, OR
16. ' TIEP 1: SUBGRADE PREPARATION
SHADING MUST BE REPLACED IF THEY DIE OR ARE DESTROYED. (SEE ALSO SECTION 83 FOR PROVISIONS REQUIRING
-COMPACT SUB -GRADE TO DENSITY REQUIREMENTS FOR SUBSEQUENT FILL MATERIALS,
BLAST ROCK: ANY MATERIAL WHICH CANNOT BE EXCAVATED WITH A SINGLE -TOOTH RIPPER MOUNTED ON A CRAWLER
SECURITY TO ENSURE MAINTENANCE OF STREETS AND OTHER FACILITIES OFFERED FOR DEDICATION).
TRACTOR HAVING A MINIMUM DRAW BAR PULL RATED AT NOT LESS THAN 56,000 POUNDS (CATERPILLAR 0-8 OR
-CUT OUT SOFT AREAS OF SUB -GRADE NOT CAPABLE OF COMPACTION IN PLACE.
EQUIVALENT) OR BY A CATERPILLAR 977 FRONT-END LOADER OR EQUIVALENT; AND OCCUPYING AN ORIGINAL VOLUME
S. A DEVELOPER MAY CREATE HOMEOWMERS ASSOCIATION OR SIMILAR LEGAL ENTITY TO SUCCEED TO IT
RESPONSIBILITIES UNDER THIS SECTION, SO LONG AS SUCH HOMEOWNERS ASSOCIATIONS IS ESTABLISHED IN SUCH A
OF AT LEAST ONE (1) CUBIC YARD.
MANNER THAT:
-SCARIFY SUB -GRADE SURFACE TO DEPTH OF 6 INCHES.
BLAST ROCK: ANY MATERIAL WHICH CANNOT BE EXCAVATED WITH A BACKHOE HAVING A BUCKET CURLING FORCE
1. PROVISION OF THE CREATION OF THE ASSOCIATION OR SIMILAR ENTITY IS MADE BEFORE ANY LOT IN THE
-PROOF ROLL SUB -GRADE TO IDENTIFY SOFT SPOTS; FILL AND COMPACT TO DENSITY EQUAL TO OR GREATER THAN
RATED AT NOT LESS THAN 25,700 POUNDS (CATERPILLAR MODEL 225 OR EQUIVALENT), AND OCCUPYING AN ORIGINAL
DEVELOPMENT IS SOLD OR ANY BUILDING OCCUPIED;
REQUIREMENTS FOR SUBSEQUENT FILL MATERIAL.
VOLUME OF AT LEAST ONE-HALF (1/2) CUBIC YARD.
2. THE ASSOCIATION OR SIMILAR LEGAL ENTITY HAS A CLEAR LEGAL AUTHORITY TO MAINTAIN AND EXERCISE
17, STEP 2: SEEPAGE KEY PLACEMENT
CONTROL OVER THE COMMON AREAS AND FACILITIES THAT MUST BE MAINTAINED UNDER THIS SECTION; AND
-SEEPAGE KEY TRENCH WILL BE LOCATED BETWEEN EMBANKMENT ABUTMENTS.
BLASTING SHOULD ONLY BE CONDUCTED WHERE RIPPING CANNOT EXCAVATE MATERIALS. WE RECOMMEND THAT
EXCAVATABLE SOILS BE REMOVED FIRST WITH CONVENTIONAL GRADING EQUIPMENT (SCRAPERS AND LOADERS). WE DO
3, THE ASSOCIATION OR SIMILAR LEGAL ENTITY HAS THE POWER TO COMPEL CONTRIBUTIONS FROM RESIDENTS OF
THE DEVELOPMENT TO COVER THEIR PROPORTIONATE SHARES OF THE COSTS ASSOCIATED NTH THE MAINTENANCE
-SEEPAGE KEY SHALL EXTEND TO A MINIMUM DEPTH OF 4 FEET OR AS REQUIRED THROUGH GEO-TECHNICAL SEEPAGE
NOT RECOMMEND LEAVING SOIL OVERBURDEN IN PLACE DURING BLASTING BECAUSE DETERMINATION OF BLAST ROCK
qNp UPKEEP of sUGH COMMON AREAS AND FACILITIES.
QUANTITIES BECOMES VERY DIFFICULT AND COSTS ARE GENERALLY GREATER. IN ADDITION, RESIDUAL SOIL
.
ANALYSIS, A MINIMUM BOTTOM TRENCH WIDTH SHALL BE
10 FEET AND THE TRENCH SIDEWALKS SHALL BE SLOPED OR BENCHED TO PROMOTE STABILITY AND BONDING BETWEEN
OVERBURDEN WILL INCREASE THE CONFINING PRESSURE OF THE ROCK AND REDUCE THE EFFECTIVENESS OF BLAST
MULTI --USE TRAIL NOTE:
THE SIDEWALL SOILS AND SEEPAGE KEY FILL.
CHARGES. LOOSE FILL OR BLASTING MATS CAN BE PLACED OVER THE BLAST AREA TO CONTROL FLY -ROCK. REMOVAL
OF ROCK BY BLASTING IS VERY EXPENSIVE. HENCE, CONTROL OF QUANTITIES IS IMPORTANT. WE RECOMMEND A
MULTI -USE TRAILS MUST BE DESIGNED TO ATTRACT WALKERS, JOGGERS, IN -LINE SKATERS, PET OWNERS, WHEELCHAIR USERS,
1& STEP 3: FM ANKM NT FILL PAC ENT
GEOTECHNICAL ENGINEER BE RETAINED TO PROVIDE ASSISTANCE FOR DETERMINING OR QUALIFYING THE BLAST ROCK
CYCLISTS, ETC„ SHALL BE DESIGNED FOR EXCLUSIVE USE OF NON -MOTORIZED USERS (WITH THE EXCEPTION OF MOTORIZED
QUANTITIES.
WHEEL CHAIRS). THE FOLLOWNG STANDARDS APPLY.
-EMBANKMENT FILL SHALL BE CONSTRUCTED AT 3(HORIZONTAL): 1 (VERTICAL) OR AS SHOWN ON THE DRAWINGS.
C�
EROSION CONTROL NOTES:
1, TRAILS MAY BE UNPAVED WTH 4" THICK COMPATED PIT GRAVEL, CABC, OR RAP (OR OTHER TYPES OF SURFACES
DEMONSTRATION OF APPROPRIATE SAFETY FACTORS AGAINST
REVIEWED ON CASE BY CASE BASIS BY THE PLANNING DEPT). BUILT TO THE SPECIFICATION FOUND IN APPENDIX H.
FAILURE THROUGH GEO-TECHNICAL ANALYSIS SHALL BE REQUIRED FOR SLOPES STEEPER THAN
3(HORIZONTAL):1(VERTICAL).
1. ALL "BMP'S" REFER TO THE NORTH CAROLINA DIVISION OF WATER QUALITY STORMWATER BEST MANAGEMENT
2. THE TRML SHALL BE LOCATED A MINIMUM 3' FROM ANY OTHER ROAD RIGHT--OF-WAY, TREES, POLES, OR OTHER
PRACTICES MANUAL (DATED JULY 2007).
OBSTACLES.
-FILL SOILS SHALL BE PLACED IN LOOSE LIFTS NOT TO EXCEED 8 INCHES IN THICKNESS AND BE COMPACTED TO A
MINIMUM OF 95 PERCENT OF THE SOILS STANDARD
2. ON -SITE BURIAL PITS REQUIRE AN ON --SITE DEMOLITION LANDFILL PERMIT FROM THE ZONING ADMINISTRATOR.
3. IF THE TRAIL INTERSECTS VATH A ROAD RIGHT--OF-WAY, POSTS OR BOLLARDS SHALL BE INSTALLED AT THE
INTERSECTION TO PREVENT UNAUTHORIZED MOTOR VEHICLES ACCESS. IN ADDITION, THE INTERSECTION SHALL BEAR
PROCTOR (ASTM D698) MAXIMUM DRY DENSITY, OR AS SPECIFIED ON THE DRAWINGS.
VEHICLE WARNING SIGNS ABOUT THE BICYCLE OR PEDESTRIAN CROSSING.
-COMPACTED MOISTURE CONTENT SHALL BE BETWEEN 3 PERCENT BELOW AND 3 PERCENT ABOVE THE OPTIMUM MOISTURE
3. ANY GRADING BEYOND THE DENUDED LIMITS SHOWN ON THE PLAN IS A VIOLATION OF NCDENR AND IS SUBJECT TO
4. THE VERTICAL CLEARANCE ALONG THE TRAIL SHALL BE 8' MINIMUM.
CONTENT FOR ALL FILL PLACED, OR AS OTHERWISE
A FINE.
APPROVED BY ENGINEER.
4. GRADING MORE THAN ONE ACRE WITHOUT AN APPROVED EROSION CONTROL PLAN IS A VIOLATION OF THE STATE
5. THE LONGITUDINAL GRADE SHALL BE A MAXIMUM OF 5% AND THE CROSS SLOPE SHALL BE NO GREATER THAN 1/4" PER
--FILL SOILS SHOULD BE PLACED IN CONTINUOUS, HORIZONTAL LAYERS FROM ABUTMENT TO ABUTMENT, EXISTING SLOPES
EROSION CONTROL ORDINANCE AND IS SUBJECT TO A FINE.
FOOT FROM THE CENTERLINE (SEE APPENDIX H).
GREATER THAN 4(HORIZONTAL): 1 (VERTICAL) SHALL BE
6, CURVES SHALL HAVE A MINIMUM RADIUS OF 95'.
BENCHED TO PROMOTE BONDING OF NEWLY PLACED FILL WITH EXISTING SOILS. BENCHING SHALL BE PERFORMED AT
5. ADDITIONAL MEASURES TO CONTROL EROSION AND SEDIMENT MAY BE REQUIRED BY A REPRESENTATIVE OF NCDENR.
MAXIMUM OF 2 FEET VERTICAL INTERVALS AND SHALL
EROSION CONTROL LIMITS OF DISTURBANCE AREA MAP:
EXTEND A MINIMUM OF 4 FEET HORIZONTALLY OR AS SPECIFIED ON DRAWINGS.
-WITHIN THE UPPER 12 INCHES OF EMBANKMENT, FILL SOILS SHOULD BE COMPACTED TO 100% OF ITS STANDARD
PROCTOR (ASTM D698) MAX€MUM DRY DENSITY.
-FILL AGAINST SUPPORTED STRUCTURES. DO NOT FILL AGAINST UNSUPPORTED STRUCTURES.
--PLACE FILL SIMULTANEOUSLY ON EACH SIDE OF UNSUPPORTED STRUCTURES UNTIL SUPPORTS ARE IN PLACE.
-PLACE A MINIMUM OF SIX INCHES OF TOPSOIL ACROSS DAM EMBANKMENT TO PROMOTE VEGETATIVE GROWTH,
19. STEP 4: OUTLET PIP FILL PLACEMENT
-FILL OF THE CULVERTS SHALL BE PLACED AND COMPACTED IN 6INCH THICK LOOSE LIFTS AROUND THE DROP INLETS AND
UP TO 2 FEET ABOVE THE CULVERTS.
-COMPACTION SHALL BE PERFORMED BY HAND TAMPERS OR SMALL HAND OPERATED COMPACTORS.
-COMPACTION SHALL BE AT A MINIMUM 95 PERCENT OF THE STANDARD PROCTOR (ASTM D698) MAXIMUM DRY DENSITY,
COMPACTED MOISTURE CONTENT SHALL BE BETWEEN 3 PERCENT BELOW AND 3 PERCENT ABOVE THE OPTIMUM MOISTURE
CONTENT FOR ALL FILL PLACED, OR AS OTHERWISE APPROVED BY ENGINEER.
-ADDITIONAL COMPACTION OF LIFTS 2 FEET OR GREATER ABOVE CULVERTS SHALL CONFORM TO THE EMBANKMENT FILL
PLACEMENT SECTION OF THIS SPECIFICATION.
20. STEP : FIELD ITY CONTROL
-LABORATORY TESTING
• PERFORM LABORATORY MATERIAL TESTS IN ACCORDANCE WITH ASTM 0422, ASTM D698, ASTM D2216, AND ASTM
D 4318.
s TEST AT A FREQUENCY OF EVERY 500 CUBIC YARDS OF EMBANKMENT FILL MATERIAL PLACED, WHEN MATERIALS USING
FOR EMBANKMENT FILL CHANGE, AND/OR AS DIRECTED
BY THE ENGINEER.
• SAMPLE SIZE SHALL BE 50-LB.
-IN PLACE COMPACTION AND NATURAL MOISTURE CONTENT TESTS
• PERFORM IN PLACE COMPACTION TESTS IN ACCORDANCE WITH ASTM D1556, ASTM D2922, OR ASTM D2937 AND
NATURAL MOISTURE CONTENT TEST IN ACCORDANCE WITH
ASTM D2216.
• FREQUENCY OF COMPACTION/NATURAL MOISTURE CONTENT TESTS:
• EMBANKMENT FILL: EACH LIFT AT A M€NIMUM FREQUENCY OF 1 PER 2,500 SQ. FT.
a PIPE INSTALLATION: EACH LIFT AT A MINIMUM FREQUENCY OF 1 PER 30 LF OF PIPE.
-WHEN TESTS INDICATE WORK DOES NOT MEET SPECIFIED REQUIREMENTS, REMOVE WORK, REPLACE AND RETEST.
21, EMBANKMENT SPECIFICATIONS MAY BE MODIFIED BASED ON SITE -SPECIFIC GEO-TECHNICAL INVESTIGATION AND
ENGINEERING DESIGN,
DRAINAGE NOTES:
1, REVERSE CURB AND GUTTER TO BE USED IN AREAS NOT CHANNELING STORM WATER RUNOFF.
2. THE PROPOSED CONTOURS WITHIN PAVED AREAS ARE GRAPHICAL REPRESENTATIONS ONLY. THE CONTRACTOR IS
RESPONSIBLE FOR GRADING UNIFORMLY BETWEEN SPOT ELEVATIONS.
3. CONTRACTOR TO GRADE ALL AREAS WITHIN PROJECT TO DRAIN STORM WATER. CARE SHALL BE TAKEN TO
ENSURE THAT ALL AREAS WITHIN PARKING LOTS AND LANDSCAPED ISLANDS SHALL NOT HOLD WATER UPON
PROJECT COMPLETION.
4, MIN. SLOPE ON ALL ASPHALT TO BE 1.5%.
5. MIN. SLOPE ON CURB AND GUTTER CARRYING STORM WATER TO BE 0.5%.
6. MIN. SLOPE ON REVERSE CURB AND GUTTER TO BE 0.0%.
7, ALL STORM PIPE TO BE CLASS III RCP UNLESS OTHERWISE SPECIFIED AND STAMPED BY NCDOT, USE OF HDPE
PIPE WILL REQUIRE APPROVAL BY NCDOT PRIOR TO INSTALLATION.
8. ALL DRAINAGE STRUCTURES TO BE PER NCDOT STDS,
0" BEFORE YOU DIG N
STOP
CALL 1-800-632-4949
N.C. ONE -CALL CENTER
6. ANY LAND -DISTURBING ACTIVITY > 1 ACRE REQUIRES COMPLIANCE WITH ALL CONDITIONS OF THE GENERAL PERMIT
TO DISCHARGE STORM WATER UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (PERMIT NO.
NCGO10000). ANY PERMIT NON-COMPLIANCE IS A VIOLATION OF THE CLEAN WATER ACT AND MAY REQUIRE
ENFORCEMENT ACTION BY THE NORTH CAROLINA DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL. RESOURCES.
(FOR QUESTIONS CONTACT MOORESVILLE REGIONAL OFFICE WATER QUALITY STAFF AT [phone].
7. TOTAL DISTURBED AREA = 45,62* AC. (REFERENCE EXHIBIT THIS SHEET)
PHASE 1 = 17.55 AC.
PHASE 2 = 9.33 AC.
HOME CONSTRUCTION=24.88 AC
* THERE ARE SOME AREA OVERLAPS BETWEEN ROAD CONSTRUCTION PHASE AND HOME CONSTRUCTION.
8. SEED AND STABILIZE BASIN IMMEDIATELY AFTER IT HAS BEEN CONSTRUCTED.
9. CONTRACTOR TO USE CB INSERT, STONE INLET PROTECTION OR BOTH DEPENDING ON PHASE OF CONSTRUCTION.
10. LANDOWNER, FINANCIALLY RESPONSIBLE PARTY OR AGENT SHALL PERFORM INSPECTIONS, AND KEEP RECORDS OF
SAID INSPECTIONS ON SITE, AS REQUIRED BY NORTH CAROLINA GENERAL STATUE 15A NCAC 048 .0131. THE
INSPECTIONS SHALL BE PERFORMED DURING OR AFTER EACH OF THE FOLLOWING PHASES OF A PLAN:
a.) INSTALLATION OF PERIMETER EROSION AND SEDIMENT CONTROL MEASURES.
b.) CLEARING AND GRUBBING OF EXISTING GROUND COVER.
c.) COMPLETION OF ANY PHASE OF GRADING OF SLOPES OR FILLS THAT REQUIRES PROVISION OF TEMP. OR
PERM. GROUND COVER.
d.) COMPLETION OF STORM DRAINAGE FACILITIES -SEDIMENT TRAPS/BASINS.
e.) COMPLETION OF CONSTRUCTION OR DEVELOPMENT.
C) INSTALLATION OF STORMWATER RETENTION MEASURES.
g.) QUARTERLY UNTIL THE ESTABLISHMENT OF PERMANENT GROUND COVER SUFFICIENT TO RESTRAIN EROSION,
11. ADDITIONAL MEASURES TO CONTROL EROSION AND SEDIMENT MAY BE REQUIRED BY A REPRESENTATIVE OF THE NO
DENR LAND QUALITY SECTION.
12. SLOPES SHALL BE GRADED NO STEEPER THAN 2:1.
EROSION CONTROL CONSTRUCTION SEQUENCE:
1. OBTAIN PLAN APPROVAL FROM THE N.C. DEPT. OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
(MOORESVILLE DIVISION).
2, FLAG THE LIMITS OF CLEARING,
3. HOLD PRE -CONSTRUCTION CONFERENCE WITH THE N.C. DEPTH OF ENVIRONMENT, HEALTH AND NATURAL
RESOURCES INSPECTOR AT LEAST ONE WEEK PRIOR TO COMMENCEMENT OF CONSTRUCTION TO DISCUSS
INSTALLATION OF EROSION CONTROL MEASURES.
4. INSTALL TEMPORARY CONSTRUCTION ENTRANCE, SILT FENCE AND SEDIMENT BASINS TO THE LINES AND
GRADES SHOWN ON PLANS, CLEARING OR DEMOLISHING ONLY AS NECESSARY TO INSTALL THESE DEVICES.
5. SEDIMENT TRAPS AND BASINS NEED TO BE STABILIZED IMMEDIATELY AFTER INSTALLATION.
6. INSTALL DIVERSION DITCHES AROUND SITE TO DIRECT RUNOFF TO SEDIMENT BASINS.
7. INSTALL PROPOSED 72" ALUMINIZED STEEL PIPE CULVERT PRIOR TO ANY SUBSTANTIAL DISTURBANCE BEYOND
STREAM CROSSING. DISTURBANCE SOUTH SIDE OF THE STREAM SHALL BE LIMITED ONLY TO CLEARING AND
GRUBBING AND INSTALLATION OF SEDIMENT BASINS, SILT FENCE AND DIVERSION DITCHES.
8. ONCE THE 72" PIPE CULVERT CROSSING IS INSTALLED, PROCEED WITH BACKFILLING AND GRADING. INSTALL
ALL STORM DRAINAGE AND OTHER INFRASTRUCTURE CONSTRUCTION.
9. ALL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE INSPECTED WEEKLY AND AFTER RAINFALL EVENTS.
NEEDED REPAIRS WILL BE MADE IMMEDIATELY.
10. ALL INLET PROTECTION DEVICES SHALL BE MAINTAINED UNTIL COMPLETION OF ALL CATCH BASIN
STRUCTURES. THESE DEVICES SHALL REMAIN IN PLACE UNTIL ALL PROPOSED STORM PIPES ARE FLUSHED CLEAN
FROM BEGINNING TO END,
11. CONTRACTOR SHALL MAINTAIN THE INTEGRITY OF ALL SEDIMENT BASINS DURING INSTALLATION OF ALL
PROPOSED STORM AND SEWER LINES.
12. STABILIZE SITE PER THE SEEDING SCHEDULE UPON COMPLETION OF GRADING.
13 AFTER SITE IS STABILIZED WITH VEGETATION, REMOVE ALL EROSION CONTROL DEVICES AFTER APPROVAL HAS
BEEN GRANTED BY A REPRESENTATIVE OF THE LAND QUALITY SECTION OF NCDENR. ALLOW NATURAL SHEET FLOW
PER THE ORIGINAL TOPOGRAPHY. IMMEDIATELY SEED ALL AREAS DISTURBED WITH PERMANENT VEGETATION
FOLLOWING THE REMOVAL OF TEMPORARY SEDIMENTATION AND EROSION CONTROL MEASURES.
14. UPON APPROVAL BY NCDENR, PROPOSED SEDIMENT BASINS MAY BE CONVERTED TO BMP'S FOLLOWING
COMPLETION OF STORM, CURB AND ROAD PAVING.
OVERALL
OF DISTL
OVERALL LIMITS
OF DISTUBANCE
`````�,1-\ tCAtr/1�*
��N RO
THE ISAACS •
GROUP, P.C.
ENGINEERING &
rn :LAND SURVEYING; �
�' % NO. C-1069 ; r;
1�1�' ; ���
LEGEND: �""'
PH. 1 & 2 DISTUR13ED AREA
:. (SEE SHT. C7.0-C7.6)
��JHOME CONST. DISTURBED AREA
(SEE SHT. C7.7 & C7.8)
OVERALL LIMrFS
OF DISTUSANCE
LIMITS
OF
OVERALL LIMITS �'
y��'fX
.K.
(947
OF DISTU E 8' U);V
1_iV ••.....• ��
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0 Or
STREET TREE NOTES:
1, STREET TREES MUST MEET THE FOLLOWING STANDARDS:
A) QUANTITY. TREES SHALL BE PROVIDED AT THE EQUIVALENT OF
NOT MORE THAN FIFTY (50) FEET APART ALONG ALL FRONTAGES OF
ALL LOTS. IN THE CASE OF A CORNER LOT, ONE (1) TREE SHALL BE
PROVIDED FOR THE FIRST ONE HUNDRED (100) FEET OF THE LONGEST
FRONTAGE, THEN ONE (1) TREE PER FIFTY (50) FEET THEREAFTER. IN
THE EVENT OF A FRACTION OF A TREE REQUIRED, THE HIGHER
NUMBER SHALL BE USED. EXISTING TREES THAT ARE TO BE
PRESERVED MAY BE USED TO SATISFY THE REQUIREMENTS OF THIS
PROVISION.
B} LOCATION AND SPACING. STREET TREES MUST BE SPACED
LINEARLY OUTSIDE THE PUBLIC ROAD RIGHT--OF-WAY, WITHIN
TWENTY-FIVE FEET AREA, PROVIDED THEY ARE WYTHIN THE VIEW OF
THE PUBLIC.
C) SIZE. STREET TREES SHALL HAVE A MINIMUM TRUNK SIZE OF
TWO AND ONE-HALF INCH (2-1/2") CALIPER, AS MEASURED TWELVE
(12) INCHES ABOVE THE ESTABLISHED GROUND LEVEL,
D) SPECIES. UTILIZATION OF A VARIETY OF STREET TREE SPECIES IS
SPECIFICALLY ENCOURAGED, IN ORDER TO PROMOTE VARIETY IN THE
STREETSCAPE AND TO REDUCE EXPOSURE TO DISEASE THAT MAY
AFFECT ANY ONE PARTICULAR TREE SPECIES. A SAMPLE OF POSSIBLE
STREET TREES IS INCLUDED IN THE FOLLOWING LIST, HOWEVER THE
DEVELOPER RESERVES THE RIGHT TO SEEK APPROVAL FOR DEVIATIONS
FROM THESE SPECIFIC TREES UPON COMPLETION OF A COMPREHENSIVE
LANDSCAPING DESIGN FOR THE NEIGHBORHOOD, WHILE MAINTAINING
THE INTENT OF VARIETY AND HARDINESS.
DECIDUOUS TREES
LARGE TREES -50 FEET AND OVER IN HEIGHT AND OVER 40
FEET IN SPREAD.
COMMON NAME -BOTANICAL NAME
NORWAY MAPLE -ACER PLATANOIDES
EMERALD QUEEN NORWAY MAPLE -ACER PLATANOIDES 'EMERALD
QUEEN'
CRIMSON KING MAPLE -ACER PLATANOIDES 'CRIMSON KING'
SUGAR MAPLE -ACER SACCHARUM
GREEN MOUNTAIN SUGAR MAPLE -ACER SACCHARUM 'GREEN
MOUNTAIN'
SYCAMORE MAPLE -ACER PSEUDOPLANTANUS
HACKBERRY-CELTtS OCCIDENTALIS
MARSHALL SEEDLESS GREEN ASH --FRAXINUS
PENNSYLVANICA'MARSHALL
SEEDLESS SUMMIT ASH -FRAXINUS PENNSYLVANICA 'SUMMIT'
AUTUMN PURPLE WHITE ASH -FRAXINUS AMERICANA'AUTUMN
PURPLE'
ROSEHiLLWHiTE ASH --FRAXINUS AMERICANA 'ROSEHILL'
BLUE ASH -FRAXINUS OUADRANGULATA
EUROPEAN ASH -FRAXINUS EXCELSIOR
GINKGO (MALE ONLY) -GINKGO BILOBA
LMPERIAL HONEYLOCUST--GLEDITSIA TRICANTHOS 'LMPERIAL'
SHADEMASTER HONEYLOCUST-GLEDITSIA
TRICAN THOS'SHADMASTER'
SKYLINE HONEYLQCUST--CLEDITSIA TRICANTHOS 'SKYLINE'
KENTUCKY COFFEE -TREE -GYMNOCLADUS DIOICUS
BUR OAK -QUERCUS MACROCARPA
CHiCKAPIN OAK -QUERCUS MUEHLENBERGI
ENGLISH ORK -QUERCUS ROBUR
SCHUMARD OAK --QUERCUS SHUMARDII
SHINGLE OAK -QUERCUS IMBICARIA
SWAMP WHITE OAK -QUERCUS BICOLOR
BALD CYPRESS-TAXODIUM DISTICHUM
AMERICAN LINDEN -T3LIA AMERICANA
REDMOND LINDEN -TILIA EUCHLORA
SILVER LINDEN -TILIA TOMENTO5A
JAPANESE ZELKOVA-ZELKOVA SERRATA
MEDIUM TREES --30 TO 50 FEET IN HEIGHT AND 25 TO 40 FEET
IN SPREAD.
COMMON NAME -BOTANICAL NAME
MIYABE MAPLE -ACER MIYABEI
TARTARIAN MAPLE -ACER TATARICUM
BAUMANN HORSECHESTNUT -AESCULUS HIPPOCASTANUM
'BAUMANNI'
YELLOW BUCKEYE, -AESCULUS GLABRA
EURPOEAN BLACK ALDER -ALNUS GLUTINOSA
RIVER BIRCH -BETULA NiGRA
KATSURATREE--CERCIDIPHYLLUM JAPONICUM
YELLOWOOD -CLADRASTRIS LUTEA
TURKISH FILBERT-CORYLUS COLURNA
CUCUMBERTREE MAGNOLIA -MAGNOLIA ACUMINATA
AMUR CORKTREE -PHELLODENDRON AMURENSE
BRADFORD CALLERY PEAR -PYRUS CALLERYANA 'BRADFORD'
CHANTICLEER CALLERY PEAR -PYRUS CALLERYANA 'CHANTICLEER'
JAPANESE PAGODA TREE --SOPHORA JAPONICA
PEKING LILAC --SYRIANGA PEKiNENSiS
GREENSPIRE LINDEN -TILiA CORDATA 'GREENSPIRE'
LACEBARK ELM -ULMUS PARV€FOLIA
SMALL TREES -15 TO 30 FEET IN HEIGHT AND LESS THAN 30
FEET IN SPREAD,
COMMON NAME -BOTANICAL NAME
AMUR MAPLE --ACER ONNALA
HEDGE MAPLE. -ACER CAMPESTRE
COLUMNAR NORWAY MAPLE -ACER PLATANOIDES 'COLUMNAR'
COLUMNAR SUGAR MAPLE -ACER SACCHARUM 'COLUMNAR'
RED HORSECHESTNUT -AESCULUS X CRRNEA
RED BUCKEYE -AESCULUS PAVIA
PINK HORSECHESTNUT -AESCULUS X PLANTIERENSIS
SPECKLED ALDER -ALNUS RUGOSA
DOWNY SERVICESERRY-AMELANCHIER ARBOREA
REDBUD-CERCIS CANADENSIS
LAVALLE HAWTHORNE -CRATAEGUS X LAVALLEI
WASHINGTON HAWTHORNE -CRATAEGUS PHAENOPYRUM
WINTER KING HAWTHORNE -CRATAEGUS VIRDIS'WINTER KING
ADAMS CRABAPPLE-MALUS'ADAMS'
JAPANESE FLOWERING CRABAPPLE -MALUS FLORIBUNDA
REp SPLENDOR CRABAPPLE-MALUS'RED SPLENDOR'
SNOWCLOUD CRABAPPLE -MALUS 'SNOWCLOUD'
SNOWDRIFT CRABAPPLE-MALUS'SNOWDRIFT'
LRONWOOD (HOPHORNBEAM)-OSTRYA VIRGiNIANA
JAPANESE TREE LILAC-SYRINGA RETICULATA
EVERGREEN TREES
COMMON NAME -BOTANICAL NAME,
WHITE FIR -ABIES CONCOLOR
CHINESE JUNIPER--JUNIPERUS CHINENSIS
NORWAY SPRUCE -PICEA ABIES
WHITE SPRUCE -PICEA GLAUCA
COLORADO SPRUCE -PICEA PUNGENS
COLORADO BLUE SPRUCE -PICEA PUNGENS GLAUCA
LIMBER PINE -PINUS FLEXILIS
AUSTRIAN PINE -PINUS NIGRA
EASTERN WHITE PINE -PINUS STROBUS
HIMALAYAN PINE -PINUS WALLICHIANA
SOUTHERN WHITE PINE --PINUS STROSWORMIS
VIRGNIA PINE -PINUS VfRGINIANA
SCOTCH PINE -PtNUS SYLVESTRIS
DOUGLAS FIR-PSEUDOT5UGA MENZIESII
ORIENTAL AR80RATAE -THUJA ORIENTALIS
WHITE CEDAR -THUJA @CCIDENTAUS
MISSION ARBORVITAE -THUJA OCCIDENTALIS 'MISSION'
EVERGREEN TREES OR ORNAMENTAL TREES MAY BE SUBSTITUTED FOR
THE. REQUIRED STREET TREES. EVERGREENS OF A MINIMUM HEIGHT OF
SIX (6) FEET MAY BE SUBSTITUTED AT A ONE-TO-ONE
EXCHANGE RATE. ORNAMENTALS OF A MINIMUM HEIGHT OF SIX (6)
FEET OR CALIPER OF ONE AND ONE-HALF (1 1/2) MAY BE
SUBSTITUTED AT A ONE TO ONE EXCHANGE RATE FOR EACH STREET
TREE.
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LEGEND
EXIST.
R/W
PROP.
R/W
PROP.
STORM DRAINAGE PIPE
...........
EXIST.
STREAM TOP OF BANK
PROP.
RIPARIAN BUFFER
DRAINAGE AREA
PROP�
TC (SHEET FLOW)
PROP.
TC (UNPAVED SHALLOW CONCENTRATED FLOW)
PROP.
TC (PAVED SHALLOW CONCENTRATED FLOW)
PROP,
TC (CHANNEL FLOW)
ELEV,
PROP.
CONTOUR
EXIST.
CONTOUR
EMST.
TREE CANOPY
PROP.
100 FT SIX MILE CREEK STREAM BUFFER
PROP.
SOIL TYPE
ApS —
APPLING (GROUP B)
ApC —
APPLING (GROUP B)
CoA —
COLFAX (GROUP C)
HeB —
HELENA (GROUP C)
.
0
CARO,
% -y
THE ISAACS
GROUP, P.C.
-ENGINEERING
*-LAND SURVEYING:
NO. C-1069
OF AT\�
f/11111111110
0%j%111011111 *.
IS, CA
4� . .....
v -S
9
� O"P H E R kA
'ell V
r "o ect:
GRAPHIC SCALE
LADERA SUBDIVISION
100 0 50 100 200
UNION COUNTY, NORTH CAROLINA
1 INCH 100 FEET
PRE—DEV DRAINAGE AREA MAP
NO.
BY
DATE
REVISION
5/
I
RER
06L19/13
SHEET ADDED
ul
;10
A A C NZO 0
CIVIL ENGMERING DESIGN AND LAND SURVEYING%--
2
RER
8112L13
PER UNION COUNTY'S COMMENTS
")ror.n' 8y�
8720 RED OAK BOULEVARD, SUITE 420
CHARLOTTE, N.C. 28217
PHONE [phone] FAX [phone]
1 C5.4
V:\Stondard Pacific\Nowtown Road Subdivision 121'�15\Enq�ncorinq\Oeslqn I)rowitigs\Curre,)t\t2zg6-DETENTIOtA.dwg, 8/21/7013 5:13W2 PM, rrovillos, 1:1

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"
. STORM WATER TREATMENT SUMMARY TABLE . - - - - -�- ---- , ,---" -�-` 1. \ \ " � , , I I - I " �, I t� __�
I -, " ,�� 1� ,--� ,/ / ,
Storm Event
1 Yr.-24 hr.
2Yr.-6hr.
10Yr.-6hr.
2SYr.-6hr.
60Yr.-6hr.
10OYr.-6hr.
.-
(BIVIP #I-Wetpond)
Post-Dev Flow
33.26 clfs
34.27 c%
80,47 cft
103-16 cft
121.00 cft
t
138.13 Cft
Routed Flow
1.25 cft
1.73 cft
27.88 ct
52.35 eft
75.38 ds
,
98.28 cft
't
lWater Surface El.
1 631.45
1 631,�_1_1
3.12 1
633.29
lFreeboard Depth
I 3.05
1 2.99
1 1.97 1
1.61 1
1.38 1
1.21
__ _
Storm Event
Yr.-24 hr.
2Yr.-6hr.
10Yr.-6hr.
.25 Yr. - 6 hr.
60 Yr. - 6 hr.
100 Yr. - 6 hr.
—]_j
�§MP #2-Sand Filter)
Post-Dev Flow
Z36 . c . ft
2.21 ft
7.74 cft
10.68 c%
13.08 cft
15.35 cft
Routed Flow ,
0.09 cft
0.09 cf�
1.62 cft
3.35 ds
5.93 cft
9.13 c% I
Water Surface El.
628.08
1 628.10
629.17
629.49
1 629.69
1 629.78
lFreeboard Depth
3.42
1 3.40
1 2.3=32.01
1 1.81
1 1. 72 J
DETENTION ANALYSIS SUMMARY TABLE
I
STORM EVENT
POINT-C
POINT
-A
POINT-B
6 HP,
PRE-DEV.
POST-DEV
PRE,DEV.
POST-DIEV
PRE-DEV,
POST-DEV
�
—
2-YR
__
.
—
--i.78
___
__ __
4�0
---------- ­_
27.69
__.._.__....._........._ ..
20.30
___i6:y _R_
. -1 —6.39—
__ —13.1-5
__
—;.-9-9
—96 _97
—70.64
25-YR
___
22.79
—.--'--
- 21.61
— ----- —
124.35
116.65
__
136.32
__
123.65
_1­1____
50-YR
_____
28.05
I——
291-- -
__­_ii._68___
-
­___­__1__
164.07
-------
169.05
175.65 1
1 100-YR A—
-]
37.71
178.91
- - -
.__
-
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Storm Event .24 hr.
2Yr.-6hr.
10Yr.-6hr.
26Yr.-6hr._50Yr.-6hr.
100 Yr. - 6 hr.
(BIVIP #3-Sand Filter)
Post-Dev Flow
3.85 eft
. 3.81 c%
11.07 eft
14.77 eft
1
17.75 cft
20.54 cft
Routed Flow
0. 14 ct
0. 14 eft
2.87 cft
5.51 cft
10.45 eft
14.22 cft
lWater Surface El.
61 .65
1 614.70
1 616.08
616.54
1 615.69
1 , 616.78 1
lFreeboard E
.45
1 3.40
1 2.02
1.56
1 1.41 _ . .
1 1.32 1
Stonn Event �
.24 hr.
2 Yr.-6 hr.
10Yr.-6hr. �25Yr.-6hr.
SOYr.-6hr.
100 Yr. - 6 hr.
(BMP #4-Sand Filter)
Post-Dev F ow
8.63 cft
8.95 cft
21.10 cft
27.07 cft
31.76 da -
I
36.29 oft
Routed Flow
0.42 eft
0.65 c%
8.08 cft �
13.10 cft
18.62 cft
23.57 cft
lWater Surface El.
646-92
1 646.96
[ 647,76 1
648.11
1 648.33
[ 648.51
lFreeboard Depth
2.78
1 2.74
1 1.94 1
1.69
1 1.37
1 1.19 J
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Proiect Description Existing on -site slopes range from 5 to 20 percent on average and existing soil types include a mixture of Helena Proposed BMP #2,(Sand Filter) . . Proposed IBMP #4 (Sand Filter) I . . . LEGEND . " J�,I,%%111 lilt,/,., % ,��%%111 fill
The project site is located in the unincorporated area of Union County, N.C. and is an approximately 69.9 acre (Hydrologic Group C). Appling (Hydrologic Group B) and Colfax (Hydrologic Group C). Summit Engineering has Due to the existing slopes in the Six Mile Creek buffer adjacent to BMP #2 well exceeding 5%, BMP #2 (Sand 8MP #4 (Sand Filter) has been designed per the NCDENR requirements to meet 850/o TSS removal, 35% TN . ,,%%% % �e'l %, \-\ ,
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____ EXIST. R/W "N ',�, .-­.**-....Z/J1. ,�1/1�1�. -.N ..O. ....
parcel along New Town Road. The proposed project consists of seventy (70) approximately 213 acre lots with performed on -site geotechnical testing to establish soil suitability for proposed roadway and home construction, Filter) has been designed per the NCDENR requirements to meet 85% TSS removal, 35% TN and 45% TP and 45% TP removal targets. The hydraulic conductivity of the existing soils at the location of BMIP #4 are .. . *1� .. . -
--- PROP. R/W - . E
private roadways designed in accordance with NCDOT requirements, The project area drains to the Six Mile as well as establish hydraulic conductivity of on -site soils for suitability for infiltration devices along with the removal targets. A proposed Riparian Buffer Impact (Buffer Impact #3) is being proposed as needed to convey 5.74E-08 cm1s and do not support infiltration measures. Additionally, the SHWT was established as required to . . 1�1 % �,y �:" 0 * S
- - - - -:� 0 .: .
Creek Drainage Basin and is subject to the site specific Water Quality Management requirements prescribed by vertical location of Seasonal High Water Tables at the locations of the proposed BMIP's 1, 2. 3 and 4. Generally the storm water discharge from BMP #2 (Sand Filter) thru the riparian buffer and avoid soil erosion, establish the minimum vertical separations as outlined by the NCDENR and DWQ requirements. BMP #4 meets -_ -_ PROP. STORM DRAINAGE PIPE � .? E ISAACS -. *r� .* �
� ." GROUP, P.C. % � . � .* I �
the N.C. Division of Water Quality (NCDWQ) as outlined in the regulations for the Goose Creek Watershed. on -site soils are highly impermeable silts and clays not suitable for infiltration measures. sedimentation loads and stream erosion. The hydraulic conductivity of the existing soils at the location of BMP or exceeds the following requirements: . 0 - - . -
. . I ................ EXIST. STREAM TOP OF BANK = -'ENGINEERING & Z - = *. =
#2 are 8.23E-08 cm/s and do not support infiltration measures. Additionally, the SHWT was not encountered = n : . : .. =
' Z 7 *
NCDWQ requirements that have been met in the design of this project include the control and treatment of the Existin and Proposed Drainage Patterns during on -site testing due to the existence of shallow partially weathered rock. BMP #2 meets or exceeds the . * The control and treatment of the difference in the stormwater runoff from the pre -development and post- ­ ­ - - - - . PROP. RIPARIAN BUFFER - - D SURVEYING -- 0 Z _. I 1 947 .. -
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-
. :� 16 NO. C-1069 : <Z ZZ �� 0- .. .- &) Z:
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difference inthe stormwater runoff from the pre -development and post -development conditions for the one-year, , Proposed drainage patterns to the proposed on -site BMP's are maintaining existing drainage pattems to the following requirements: . development conditions for the one-year, 24-hour storm, � E a — DRAINAGE AREA *.I- .* .�. .. .* ci .�,
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24-hour storm, with structural stormwater controls that promote infiltration of flows and groundwater recharge, if maximum extent practicable as need to create a balanced distribution of storm water flow thru BMP's 1, 2. 3 and o Removal of an 85 percent average annual amount of Total Suspended Solids (85% TS$ removal), 35% . .1 Ze "N" ,- #%.1VGlNIE . .�-
I 8111111111111111 PROP. TC (SHEET FLOW) . . �� V *-. ....... "
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practicable based upon soil conditions. 4 in a consistent manner with existing flows. o The control and treatment of the difference in the stormwater runoff from the pre -development and post- TN and 45% TP (min) removals in accordancewith NCDENR requirements (or a Sand Filter. .- �) 6 .�, - ***#..****" �'. ,%%
. 0 Draw down the treatment volume within 40 hours. . D SHALLOW CONCENTRATED FLOW) 6 OF �3�� %N ,,% ,S
. development conditions for the one-year, 24-hour storm. . . . 1, - 'PHEO- "%
Structural stormwater controls have been provided to meet the following minimum requirements: Proposed BMP & Riparian Buffer Irrigact Summa * Removal of an 85 percent average annual amount of Total Suspended Solids (85% TSS removal), 35% 0. Discharge the storage volume at a rate equal or less than the pre -development — a iiiiiiiiiiiiiiiiiiiii PROP. TC (PAVED SHALLOW CONCENTRATED FLOW) . 16/11 "", //111111 11 It%% 0
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7 J/
. TN and 45% TP (min) removals in accordance w1ith NCDENR requirements for a Sand Filter. . discharge rate for the one-year, 24-hour storm . . . . . I � .
. . 5 X
. a. Remove an 85 percent average annual amount of Total Suspended Solids Proposed EMP #1A (Wet Pond) and BMP #1113 (Engineered Filter Strip & Level Spreader) * Draw down the treatment volume within 40 hours. 0 Meet design of Stormwater Management Measures set forth in 15A NCAC 02H .1 008. . = 1 1 = s t = -t 1 = PROP. TC (CHANNEL FLOW) 1 ;7�
b. Draw down the treatment volume no faster than 48 hours, but no slower than 120 hours, for detention Due to the existing slopes in the six mile creek buffer adjacent to BMP #1 well exceeding 5%, BMP #11A (Wet . * Dischargethe storage volume at a rate equal or less than the pre -development . 9 The post developed discharge rate at the property boundary is less than or equal to the pre development — 8". — PROP. CONTOUR . . GRAPHIC SCALE
. .
ponds. Pond) has been designed to treat 90% TSS and is being constructed in series with an Engineered Filter Strip discharge rate for the one-year, 24-hour storm rate for the (2 & 25) two and twenty five year storm events. . - - ELEV. - - EXIST. CONTOUR . 1OG 1 O 0 29D
c. Discharge the storage volume at a rate equal or less than the pre -development discharge rate for the and Level Spreader as required to meet the minimum 30% TN and 30% TP targets treatment requirements as , * Meet design of Stormwater Management Measures set forth in 15A NCAC 02H .1008. .
one-year, 24-bour storm. prescribed by the NCDWQ. A proposed riparian buffer Impact (Buffer Impact #2) is being proposed as needed 0 The post developed discharge rate at the property boundary is less than or equal to the pre development Proposed Riparian Buffer Impact #11: Public Sewer Line Extension --- ­---� EXIST. TREE CANOPY I
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d. Meet design of Stormwater Management Measures set forth in 15A NCAC 02H.1008. to convey the storm water discharge from BMP #1A (Wet Pond) thru the riparian buffer and avoid soil erosion, rate for the (2 & 25) two and twenty five year storm events. . This impact is required to allow the Ladera development access to the public sanitary sewer system owned and . ... ....... . . ........... . . .. .
sedimentation loads and stream erosion. The hydraulic conductivity of the existing soils at the location of BMP maintained by the Union County Public Works Dept. This sewer connection point was mandated by Union , , " , , , . 1 INCH = 100 FEET . .
Additional stormwater management measures have been provided for this project as required by Union County #1 A and #1 B are 7.26E-08 cm/s and do not support infiltration measures. Additionally, the SHVVT has been County Public Works at the time of development of the adjacent property and an easement has been recorded at PROP. 100 FT SIX MILE CREEK STREAM BUFFER .
. - .. I - 1.
to include the following- established as 628.9 at BMP #11A and the permanent water surface elevation of the wet pond has been Proposed BMP #3 (Sand Filter) . the Union County Register of Deeds to accommodate the Ladera Development at the location of Buffer Impact 1, .,� " 11., � .1 , 1, / �., Project: .
. � 1. I .. 'L I
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�_ 117, Z"'I'l�/IX//1 _ , , I I
established as 629.0 in accordance with NCDWQ requirements. BMP#1A and #113 meet orexceed the BMP #3 (Sand Filter) has been designed per the NCDENR requirements to meet 85% TSS removal, 35% TN #1 as shown. The proposed sewer design was aimed at connecting to the existing sanitary sewer line and t ,�//__� Z_�_� . . . ..�. � � I... .1 .1� . . .�, .
a. In accordance with Section 187 of the Union County Land Use Ordinance, the post developed following requirements: and 45% TIP removal targets. The hydraulic conductivity of the existing soils at the location of BMP #3 are extending a proposed sewer line thru the Buffer at as close to a 90 degree angle as possible and minimizing the . ­=— PROP. SOIL T`YPE 11-1. � - � ­4
1 - " 1.
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. I., - LADERA SUBDIVISION
I
I . .
discharge rate at the property boundary is less than or equal to the pre development rate for the (2 & 2.21 E-07 cm/s and do not support infiltration measures. Additionally, the SHWT was established as reciuired to overall disturbance to the maximum extent practicable. . - APPLING (GROUP B) . ... , �. 1
25) two and twenty five year storm events. * The control and treatment of the difference in the stormwater runoff from the pre -development and post- establish the minimum vertical separations as outlined by the NCDENR and DWQ requirements. BMP #3 meets . . . ApB ".- I .. UNION COUNTY, NORTH CAROLINA
development conditions for the one-year, 24-hour storm. or exceeds the following requirements: . Riparian Buffer Impact #4 and Stream Impact: Proposed Roadmay Crossing: � . (GROUP B) .1 I " ,,,, Titie: . . .
Natural Resources Invento * Removal of an 90 percent average annual amount of Total Suspended Solids (90% TSS removal), 30,1/0 . . This impact is needed to gain access to the rear half of the property and there is no alternative route to access . CoA - COLFAX (GROUP C) I .., - .
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The parcel is covered in approximately 50% woods and 50% previously cleared grass fields. Hart and Hickman TN (min) and 30% TP (min) removals by utilizing BMP #11A and #1 B in a"treatment train". * The control and treatment of the difference in the stormwater runoff from the pre -development and post- this portion of the tract without crossing the existing perennial stream. The design was aimed at minimizing the . HeB - HELENA (GROUP C) . . I �'.. POST-DEV. DRAINAGE AREA MAP
Environmental has performed a stream/wetlands delineation/study and confirmed with the U.S. Army Corp of * Draw down the treatment volume no faster than 48 hours, but no slower than 120 hours. development conditions for the one-year, 24-hour storm. extent of grading and disturbance in the Buffer and the stream to the maximum extent practicable. I I .. .. . , �� 11 I., .
11 ...
Engineers and N.C. Division of Water Quality that an existing on -site perennial stream (Stream A) exists that 41 Discharge the storage volume at a rate equal or less than the pre -development , �� , I � � '... .. �� . "'j File #: 12196-P8,06 05/06/13 Project Eqr: CNI
. * Removal of an 85 percent average annual amount of Total Suspended Solids (86% TSS removal), 35% NO. BY DATE REVISION �1� I . . 'Ii I Dote:
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� I . .
bisects the property, is considered Waters of the State and will be subject to the 1 00 foot Six Mile Creek buffer discharge rate for the one-year, 24-hour storm . TN and 45% TP (min) removals in accordance with NCDENR requirements for a Sand Filter. 13LJILT UPQN 6REA NOTE: . �
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. .. I : = ;a lesi,n By, CNI
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PROPOSED BUILT UPON . 2 RER 8/12/13 PER UNION COUNTY'S COMMENTS . - , ,, ' . . � USAACSc'
requirements. Additionally, the centrally located pond (Pond G) has been deemed "Jurisdictional' and waters of 0 Meet design of Stormwater Management Measures set forth in 15ANCA002H .1008. * Draw down the treatment volume within 40 hours. . . . . 1 RER 06/24/13 SHEET ADDED �, I ." i. , ,.
I . .11
the State by the USACE, however the lack of connection to Stream A and the fact that this manmade pond is 0 The post developed discharge rate at the property boundary is less than or equal to the pre development * Discharge the storage volume at a rate equal or less than the pre -development AREA (BUA) FOR EACH POST -DEVELOPED DRAINAGE . . . - . .1 I ,­ 1-- 0 Drown By. RER
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located outside of a natural drainage way allows Pond G to not be subject to the Six Mile Creek buffer rate for the (2 & 25) two and twenty five year storm events. dischargerate for the one-year, 24-hour storm E FLOW TO PROPOSED BMP's BASED UPON PROPOSED . . �.'­'. I - _C
requirements. Northern Ponds "C' and 'F' have deemed "Isolated" and will be not be subject to the Six Mile 3 DAP 5/20/15 REV. ROAD LAYOUT AND GRADES .�­,�..`. , I..,. � .....1'%1.1­.,. CIVIL ENGINEERING DESIGN AND LAND SURVEYIRG -U l`=100'
.1 . . . scole:
Meet design of Stormwater Management Measures setforth in 15A NCAC G2H.1008. ROADWAYS AND SIDEWALKS BUA, FOR ROADWAY CONSTRUCTION PHASE AND A I - . .
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* . . .1 . ­ . I
Creek buffer requirements. The post developed discharge rate at the property bound" is less than or equal to the pre development rate for CONSERVATIVE ESTIMATE OF 7,000 S.F. BUA PER RESIDENTIAL LOT AT FINAL I � . . I . VARD, SUITE 420
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the (2 & 25) two and twenty five. year storm events . . BUILT -OUT. (TOTAL OF 70 PROPOSED LOTS) . . I I . . CHARLOTTE, N.C. 28217 C505
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PROP. EXCELSIOR QU LEX E Qoo ( )
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[ LEVEL SPREADER.-
[ I N1TH T0P'% ELEV.=62C.64 r\ j ' ` �� , _
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(SEJ DETAIL'•THIS SHEET) A� �f �.;._ # \ � � � .., s3p �� -----100 F IX MIL CREEK
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PROP`HW 1B /� 4 j/�,j /f .. \;'-$ EAM ,A \.1
V. OUT= 14:53
PROP. 51' LO x 18" ICK C�' S 1
RIP RA CHANN ENERG DISSIPA
- / !'° uG°� OPED 0.50%
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BMP 1 A WET POND AND BMP #1B ENGINEERED FILTER STRIP LEVEL SPREADER
SCALE: 1 "=30'
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6" - 6" -� -'- 6. 11 2-10" PARALLEL PVC PIPES
�? TO JUNCTION BOX
STARTING ELEV.=627.75
Cn I / SLOPED @ 1.00%
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' RISER FLOW DIVERSION PLAN VIEW
NOT TO SCALE
PRECAST CONCRETE RISER
ASAHI/AMERICA TYPE 75 BUTTERFLY
W/ MANHOLE RING &COVER
VALVE ASSEMBLY (TYPE A)-- _..
(SEE DETAIL SHT.)
(OR APPROVED EQUIVALENT)
..TOP OF SLAB EL._=6313.62.
6'x6'_-._
PRECAST CONCRETE RISER
__- OPENING EL.=_632.45
5.0' OPENING ONW ALL SIDES
STEPS @ 14"
(WEST SIDE ELEV.)
WATERTIGHT RUBBER GASKET JOINT E
ORIFICE OPENING DIA.=4" °'--12"--° 2"x12"x1/4" STAINLESS STEEL
ORIFICE ELEV. (PERM. POOL EL.)= 629.00 - L i_. .._.. �.. RISER SUPPORT STRAP 2 EA. SIDE) __.. .._ -._ ( )
� ELEVATION � _. AT RISER JOINTS
BOTl l V.= 628.00 STEM I 1/2" GALVANIZED BOLTS TOP/BOTTOM FOR SUPPORT
----SUPPORT I, - RISER BASE
(TYP.) , WATERTIGHT RUBBER BOOT
BACKFILL AGAINST
PVC BOTTOM DRAIN STRUCT. @ELEV.= 625,50 - - _ _ _ - - - _ - - - - - - `_ -
W/ RISER CLAMP (INSIDE) I
BOLTED TO TWO PIECE STEM I
STRUCTURE FOR & HOUSIN
STABILIZATION (WATER�T ASSEMBLY)
STAINLESS WATERTIGHT RU31!rER BOOT I i
/ / ' IP FLOW OUTLET
STEEL TRASH ?•
GUARD BLOCK i' PIPE !
DRAIN INV. EL = SUPPORT I Q s DIA.=36"
` ! 6'° 624.00 (IF REQ'D) r INV_ EL. =621.70� _ _ - \
99 ELBOW UP-- ^qy _
BOTTOM OF BASIN- 624.00
_-----------� { 3.5"CLR
a � a: _. �-i-
PROVIDE CABC STONE wwµ (3YP.)
�, #5 TYPE 2 BARS @ 12 O.C.
SUPPORT UNDER 6" 30„ (MIN.) I - COLD JOINT
BOTTOM DRAIN AS NEEDED i .. A 1Q" COVER FROM
OF CONC. BASE TO
RISER LIP
3.5"CLR PRE-FAB. RISER BASE
(TYP.)O`SQ:�(Mi;)_. ._..._,� _w/ BOTTOM AND 6-(MIN.)
OUTSIDE LIP
#5 DOWEL BARS Ij t
4 EACH SIDE"� i't W__--3600 PSI REINFORCED CONCRETE
#5 DOWEL BARS @ 12 O.C. CONCRETE BASE
WALLS TIED AT EACH END (TOTAL DOWEL BARS = 9) V- -Y FILL BOTTOM OF RISER
W/10" THK 3600 PSI CONC.
CONCRETE RISER DETAIL #1 (DO S1)
NOT TO SCALE
63C
>. U 62C
LJ
Ld
BOT.
61C
0+00 1 +00 2+00
BMP #1 A OUTLET PIPE PROFILE
HORIZONTAL SCALE: 40 FEET PER INCH
EXISTING GROUND AT CL--------_-__-
PROPOSED GROUND
HYDRAULIC GRADE LINE ---
(SEE SNT. C5.8 FOR BMP #1 A SECTION C-C)
0
z
0
D.
0
NIC04
PIP
tD 0
5 FT WIDE SPILLWAY
(OPEN ON ALL FOUR SIDES)
ELEV.=632.45
PRECAST CONCRETE RISER
W/ MANHOLE RING AND COVER
(SEE CONCRETE RISER DETAIL #1)
1.0 WEIR
ELEV.=631.4a `
4" ORIFICE /
INV.Q629�00 2-10" PARALLEL PVC
PIPES
I TO JUNCTION BOX
STARTING ELEV.=627.75
PERM. WSE=629.00 ..._._v...,, . ' SLOPED @ 1.007
1 FT WIDE BENCH AT ELEV.=627.75 /
WITH A 1 FT TALL X 5' WIDE WITH A TOP ELEV.=628.75­-____..--
ACROSS THE WIDTH OF THE STRUCTURE FOR LEVEL €
SPREADER DIVERSION I "-•._ STEEL I -BEAM SUPPORT
6" GATE VALVE I IF NEEDED
OUTLET PIPE
36" RCP @ 2.0%
GROUND
GRASS SPILLWAY IN CUT SURFACE- -- -- --
REINFORCED CONCRETE FOOTING ,� -
(SEE CONCRETE RISER DETAIL)
I ,WEST & SOUTH SIDE VIEW 3 3 ELEV,=63
EMERGENCY � 1 1 �'
.50
SPILLWAY HEIGHT=1,5' EMERGENCY SPILLWAY
-ELEV.=633.00
PROP. GRASSED SPILLWAY W/..
NORTH AMERICAN GREE
N S75
TEMPORARY LINER ALONG ENTIRE
EMERGENCY SPILLWAY LENGTH=20' LENGTH AND WIDTH OF SPILLWAY
5.0' WEIR
EMERGENCY SPILLWAY X-SECTION ELEV.=631.40
NOT TO SCALE 4" ORIFICE OPENING
INV.=629.00 ..
PERM. WSE=629.00-v- .
2 FT WIDE BEND AT ELEV.=627.75
WITH A 1 FT TALL WEIR WITH A TOP ELEV.=628.75
ACROSS THE WIDTH OF THE STRUCTURE FOR LEVEL
SPREADERDIVERSION
36' .RCP
OUTLET PIPE
E.
ES SPILLWAY EL.=626.64
31 --,,
1 1
EL.=625.14
BARS/ „1 APART 3600 PSI REINFORCED CONCRETE
--------"CONCRETE CONCRETE BASE
i
0 ----- -_ �I
BMP #1 B: ENGINEERED FILTER STRIP & LEVEL SPREADER
SECTION A -A'
NOT TO SCALE
1
100 YR. W.S.E.=633.29
25 YR. W.S.E.=632.89
- 10 YR. W.S.E.=632.53
2 YR. W.S-E.=631.51
SIMPLE METHOD WO WSEL = 631.04
_ _2_10" PARALLEL PVC PIPES
TO JUNCTION BOX
STARTING ELEV.=627.75
SLOPED @ 1.00%
~6" GATE VALVE
GROUND
--I SURFACE
L✓ ------
POND SIDE VI W NORTH S DE
BMP #1 A(WET POND) OUTLET STRUCTURE (DO_�S1).
ORIFICE AND WEIR DETAIL
:.
f
,
,
----------------
,
I
N
FOREBAY SPILLWAY DETAIL SECTION B-B
NOT TO SCALE
#57 STONE BEFORE LEVEL
/--SPREADER VEGETATIVE FILTER
STRIP
8.07. (MAX) ;
ELEV.=626.40m-1
FILTER FABRIC
30' SODDED VEGETATIVE
FILTER STRIP @ 8.0 %(MAX)
END OF EFS
ELEV.=624.00
```��11t1111f1"ftf�r'
1##lif�l�
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:°THE ISAACS '•9
GRAPHIC SCALE
Lf"i E R/�1 SUBDIVISION
GROUP, P.C. �� f
f ENGINEERING & :
Q •./ �_
E
30 0 15 30 60
,.` . ,
�.f�•
UNION COUNTY, NORTH CAROLINA
M?LANE? SURVEYING.
:NO. CW1069 iz�
w 947
am 0= guinea== saaaffimm
1 INCH - 30 FEET
`
�
1,.31Y11 DESIGN/SPECIFICATION
-'i FO 0 %v�
�ittll##t#t
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N0. BY GATE REVISION
n:
L JUw%I3
>r� eri E:�,r: u '�
111��1
>>t�l►# ii11�
f
1 RER 05 16 13 REVISED BMP
2 RER 8 12 13 PER UNION COUNTY'S COMMENTS
E-
CIVIL ENGINEERINIG-GEOTECHNICAL•SURVE'ONG C
8720 RED OAK BOULEVARD, SUITE 420
CHARLOTTE, N.C. 28217
PHONE [phone] FAX [phone]
`
P:\Standard Pacific\Newtown Rood Subdivision 12196\Enrineering\0esign Drpwing5\Curront\1219f-E'6.ciwg, 8/26/2013 11:06:33 AM, rrovillos• 1:1

BMP 2 SAND FILTER
SCALE: 1 "=30'
LOT 26
. j
PROP;, FES
\ \ \ PROP. DI 01 _ . !, \ \ 1PI1�'ClUT�613 : 52 -
vRIM=616.40. ` w
I !f \.
y' w ROPeFE"s v CLASS B `R AF` ,.
v
t 1 v. v NV. OUT=612.54, _APRON 1 y
I \ ry_ \ - - .. , " \ PLOP. 1n WIDE GRASS" -
d W/ T LXB WX1,8 D \ 0 j
AS*5� B W RAP,-,\-SPILLWAY_IN CUT Op,W jig
APRON` \ a \ ELV,=616:
E DETAIL IS "eHTj
•
� 6
1 PI OP. C:O.s
7
.r.
• 62 .��`
OAP ELE1(.=612.50
, \INv. OUT=609 ���,
� a
I
o - I , - -BMP ~ 3PROP. CELSIOR CURLEX . V _ - ` 1 N
RO �y
\F V
� {J A
'fit �S
ATT1N ON SLOPES TYP. , G , as
n T o a ►. 5'/+
{ft11l� 1 .qr�.-,�I
I 1 f L
7i
(STAB€LI �E W/IN 7 DAYS)
G F O .--
U-o
o
i1
ns _r
P. 1300 S.
PRO 1 .Q„ OP 4F BERM- PROP. DI T1
i
..
s S,
I'I OF SAND FILTER MED
t F t
k 9.nn IM= 17.5 0
-
r
I
30 LO 43 WIPE X
k -�• n
TOPI,OF RIVER ROCS EL.=672, � kl:::�:::::::-
1 a
k ` Q \'
F �� 'x1 ��,� PROP. W �4L 0: 4& DJ
i TOP OF SAND `EL.-612. Q
k
a
_-CL,ASS B RJR ft�P,_ /
_ f
I i :
rn /
.f -1 i
TOP OF 10 , . ' I
s� rn
P-ROP.�O I�ER , A�{�
I FA
F _
WIDE
1 D � /
' y
T�1N QP(, E''
_.. P
I _ \ELEV.=61$.10 NV' ---
I _ s i
\ /
r / F 0 OL IS :HOPE'
PROP. SF-3 `CONCRETE ..�ti� . ..�'�.• p 0. J i l
OUTLET STRUCTURE .� �` � ...:. ,
(SEE DETAIL THIS SRT } :' �� I PRQP`�44 /wbE,�OIREBAY PILLWAY !
` N s-s09.50 _ �. �?... � ,. GAL S RIP; RAP
INV. ! ( ) �}%i 9 �
INV. \0UT(18 )=607.83
I -
- / PROP,, fO- PVC
n :PROP. 45,00 L.F. OF _ � �o i/, : � ! dNV✓ IJ� 612.20 `° \ \ �
:,...- 18" RCS\@ 1.50% .� , x[
• . PROP. 6" PERFQ1�ATEO" )Al/r5 LKi 5 WX1$" D
PROP. FES SF,3 i aoa; 7 � ~ / /,. ' / CLAS B RIP RAP \
°aa PV UNDERt)R INS S\ �
So �a a<a �- �• ./ O• LEVELSP
C/ !READER
INV. OUT=607.16 QUoaQ� \ SP¢CEq `.;,AI�IE� , _ \
i
w/1 n'Lx 'wx1 s"D ' .� \ \ SLOPED T 0,50%
' CLASS 8 RIP RAPS PROP. ,,§WALE TYPE--B
' PROP. 6 SOUP PVC FORSLOPED 0 5.80 % / \
CONNECTING,-U`NDERPRAIKS// %
/ i 1 TO OUTLET' S1RUGTLJRE:
F
a /
I'
1
BMP#3 SAND -FILTER
SCALE: 1 "=30'
4" CONCRETE SLAB WITH
MH FRAME & COVER
ELEV.=630.60
(SEE DETAIL SHT C8.4)
4'-0" RECTANGULAR 8" WEIR
OPENING ON ALL 4-SIDES
INV.=629.60
18" WEIR
OPENING -
INV.=628.71
6" UNDERDRAIN
INV.=623.E
4.0'
ALL SIDES
5.0,
TOP OF DAM
W ELEV.=631.50
6
.--__PRECAST CONCRETE RISER
(NCDOT STD. 840.45)
USE 2"x12"x1/4" STAINLESS STEEL
RISER SUPPORT STRAP (2 EA. SIDE)
AT RISER JOINTS AND ANCHOR W/
1/2" GALVANIZED BOLTS
ELEV.=627.00
GROUND SURFACE �
OUTLET PIPE
I. w
CONCRETE ANTI -FLOTATION INV.=618.20
DEVICE (SEE DETAIL THIS SHT.)-(N,E,S & W SIDE)4" CONCRETE SLAB WITH
on------MH FRAME & COVER
ELEV --630 60
4'-0" RECTANGULAR 8" WEIR
OPENING ON ALL 4-SIDES
INV.=629.60
18" WEIR
OPENING
INV.=628.71
GROUND SURFACE
ELEV.=627.00
6" UNDERDRAIN
INV.=623.80
4.0' ?
5.0'
r-�
F-77777
--
1
100 YR WSEL=629.78 .
SIMPLE METHOD WQ WSEL=628.61
� 2 YR WSEL=628.10
STEPS ® 16" O.C. (8 STEPS)
PRECAST CONCRETE RISER
Z-(NCDOT STD. 840.45)
18" OUTLET PIPE.
INV.=618.20
(SOUTH SIDE)
OUTLET STRUCTURE
GRASS SPILLWAY IN CUT
__. _..� a._m.___._ 191.---- .._._ _ , _ _ ._
4" CONCRETE SLAB WITH
4" CONCRETE SLAB WITH
LEGEND
MH FRAME & COVER
r"
TOP OF DAM
ELEV.=618.10
MH FRAME & COVER
"" �'__-...
TOP OF DAM
ELEV. =649.70
ELEV.=617.52 -d
-W� _ _ _
ELEV.�49.15
_. _,,.
EXISTING R/W
(SEE DETAIL SHT. C8.4)
(SEE DETAIL SHT. C8.4)
PROPOSED R/W
4'-0" RECTANGULAR 8" WEIR
4'-0" RECTANGULAR 8" WEIR.
-
- .a EXISTING WATER LINE
OPENING ON ALL 4-SIDES - 4.0'
OPENING ON ALL 4-SIDES .40`
INV.=616.52 ALL SIDES
INV .=648.15 -..,....
ALL SIDES
_ ..m EXISTING STORM DRAINAGE PIPE
12" WEIR w., ,? ��_.._ ...
48" WEIR _-....._._5 ar_.._....
--' -- -' - EXISTING WETLANDS
OPENING.,_
PRECAST CONCRETE RISER
OPENING
PRECAST CONCRETE RISER
_.............._ EXISTING PAVEMENT
INV.=614.97
(NCDOT STD 840 45)
INV.=646.87 -
(NCDOT STD. 840,45)
USE 2"x12"x1/4" STAINLESS STEEL
RISER SUPPORT STRAP (2 EA. SIDE)
AT RISER JOINTS AND ANCHOR W/
1/2" GALVANIZED BOLTS
ELEV.= 612.20
6" UNDERDRAIN ...GROUND SURFACE _
INV.=609.50
OUTLET PIPE
CONCRETE ANTI -FLOTATION .._/ INV.=607.83�
DEVICE (SEE DETAIL THIS SHT.)
(N,E,S & W SIDE) 4" CONCRETE SLAB WITH
FRAME & COVER
ELEV.=617.52
4'-0" RECTANGULAR 8" WEIR
OPENING ON ALL 4-SIDES - ... _
INV. =616.52
12" WEIR
OPENING��
INV.=615.17
GROUND SURFACE
ELEV.=612.20
6" UNDERDRAIN
INV.=609.50 �-
3 1 3 ELEV.=631 �0
EMERGENCY �1
SPILLWAY HEIGHT=1.5' EMERGENCY SPILLWAY
ELEV.=630.00
PROP. GRASSED SPILLWAY W/
NORTH AMERICAN GREEN S75
EMERGENCY SPILLWAY LENGTH=10' TEMPORARY LINER ALONG ENTIRE
LENGTH AND WIDTH OF SPILLWAY
EMERGENCY SPILLWAY X--SECTION
BMP 2 OUTLET SUMMARY
1
4. 0­'
..,r
F­9_
�E 1.V'._..
t
;
100 YR WSEL=616.78
SIMPLE METHOD WO WSEL=615.07
2 YR WSEL=614.70 � _ _
STEPS 0 16" O.C. (6 STEPS)
PRECAST CONCRETE RISER
I -(NCDOT STD. 840.45)
18" OUTLET PIPE_ _/
INV.=607.83
(NORTH SIDE)
OUTLET STRUCTURE
GRASS SPILLWAY IN CUT
191 ­­-.....__._-._.
USE 2"02"x1/4" STAINLESS STEEL------ __.__..�! .r.,-_....._... EXISTING OVERHEAD UTILITIES
RISER SUPPORT STRAP (2 EA. SIDE) EXISTING FENCE
AT RISER JOINTS AND ANCHOR W/
1/2" GALVANIZED BOLTS --== = PROP. STORM DRAINAGE PIPE
ELEV.=644.70 PROP. CATCH BASIN
6" UNDERDRAIN GROUND 'SURFACE 0 PROP. DROP INLET
ELEV. PROP, CONTOUR
INV.=642.00 ��v� ._ �v EXIST. CONTOUR
OU�PJPE� ..--PROP. GRASS SWALE SLOPED @ 1.5% MIN.
ELEV. PROP. TOP OF CURB SPOT ELEV,
CONCRETE ANTI -FLOTATION INV.=641.68 PROP. 6" CLEAN OUT
DEVICE (SEE DETAIL THIS SHT.) (N,E,S & W SIDE) 4" CONCRETE SLAB WITH
_ MH FRAME & COVER
10 ELEV.=649.15
4'-0" RECTANGULAR 8" WEIR
OPENING ON ALL 4-SIDES ..... ..... ...-ry
INV.=648.15
36" WEIR
OPENING
INV.= 646.87
GROUND SURFACE_
ELEV.=644.70
6" UNDERDRAIN
INV.=642.00 `-
3 WHEW
EMERGENCY }1 1r 3 L V.=618.10 i
SPILLWAY HEIGHT=1.5' EMERGENCY _SPILLWAYw_
P ELEV.=616.60
PROP. GRASSED SPILLWAY W/
\ NORTH AMERICAN GREEN S75
EMERGENCY SPILLWAY LENGTH=10' TEMPORARY LINER ALONG ENTIRE
LENGTH AND WIDTH OF SPILLWAY
EMERGENCY SPILLWAY X-SECTION
BMP#3_ OUTLET SUMMARY
__..._5.0'.,_
3 0� W..A.....�..
_
100 YR WSEL=648.51
25 YR WSEL=648.11
2 YR WSEL-646.96
__SIMPLE METHOD WQ _WSEL=646.77
--",--STEPS C@ 16" O.C. (5 STEPS)
PRECAST CONCRETE RISER
/ (NCOOT STD. 840.45)
30" OUTLET PIPE_ -/
INV.=641.68
(NORTH SIDE)
OUTLET STRUCTURE
GRASS SPILLWAY IN CUT
SAND FILTER BMP NOTES:
1. MAINTAIN 1.5% SLOPE (MIN.) IN BOTTOM OF BASIN
TO SAND FILTER
2. UPON BASIN CONVERSION TO BMP, SOD BOTTOM
OF BASIN (EXCLUDING SAND FILTER), SIDE SLOPES
WITH TIFTON 419 BERMUDA GRASS.
3. ALL SAND FILTERS SHALL HAVE A MINIMUM 20
FOOT ACCESS EASEMENT CONNECTING TO A
DEDICATED PUBLIC RIGHT OF WAY, ACCESS ROAD
SHALL HAVE MIN. 12' STABILIZED WIDTH, MAX.
LONG. GRADE OF 15%, MAX. CROSS -SLOPE 5%.
IN ADDITION, A 10-FOOT WIDE PERMANENT
MAINTENANCE ACCESS EASEMENT MUST BE
PROVIDED AROUND THE PERIMETER OF ALL BMPS
TO ALLOW FOR ADEQUATE MAINTENANCE AND
REPAIR.
4. ALL DRNNAGS AREAS TO A SAND FILTER FACILITY
ARE TO BE STABILIZED PRIOR TO INSTALLATION OF
SAND.
5. CLEAN OUTS IN THE UNDERDRAIN SYSTEM ARE TO
BE PROVIDED AS SHOWN ON THIS PLAN.
'
EMERGENCY 1 1( �9�0
SPILLWAY HEIGHT=1.5' EMERGENCY SPILLWAY
'� � ELEV.=648.20
PROP. GRASSED SPILLWAY W/
NORTH AMERICAN GREEN S75
EMERGENCY SPILLWAY LENGTH=10' TEMPORARY LINER ALONG ENTIRE
EMERGENCY SPILLWAY X-SECTION LENGTH AND WIDTH OF SPILLWAY
BMP#4 OUTLET -_SUMMARY
TOP OF DAM
ELEV.=653.30
4'-0" RECTANGULAR 6" WEIR
OPENING ON ALL 4-SIDES ....--_._
INV.=651.20
ALL SIDES
5. flw.._._. PRECAST CONCRETE RISER
(NCDOT STD. 840.45)
"-USE 2"x12"x1/4" STAINLESS STEEL
RISER SUPPORT STRAP (2 EA. SIDE)
AT RISER JOINTS AND ANCHOR W/
1/2" GALVANIZED BOLTS
I���I ELEV.=649.24 ELEV.-649.24 -
GROUNDSURFACE­_
PROP. JB Z2 7 / , �� G, t 3 GROUND SURFACE
RIM=653.10
71
PROP. JD/Z1
RIM= 6} 85 PROP. FES Y ,
! - oocl S INV. OUT=646.0,,0
1 I �I ! I v ? / °� + W/ 45,!Lx9'WX1$"D ', CONCRETE AN31-FLOTATION -
t�Q@01 , CLASS` B RIP AP APRON DEVICE SEE DETAIL
V rK,
i
P VP. 10" f
RFORATEO
SIANDPIK
!!! NV. OUT= 45.38
(SEE SHT., C5.8)
I
II t / t3 j 1 aaa� p4aF PROP! 18 L.F.
PROP. SLAB TYPE CB Z3 �; � I , ,�;
6" OPENING ON 4 SIDES OF 10" SOLID'HDPE�
OPENING EL=651.20 SLOWED 01.
���,BMP #4 PROP. ,57' WIDEI FOREBAY- SPILLWAY
SANDW/ C(ASS B RIP RAP
{ ! z S baao a4 �i
l / I FILTE {sEE/SHT C5.43}
.. �aaatlbpE � � -
E
EXIST. POND G" ! PROP. 1 n PVC
� ;� � i I t � `;� 7 �� ' _-
k / INV. OUT•-645.20
3"
f
r
t "
W 3nL wx1 a Wx1$ D
I ! /
.i :/
i CLASS B RIP RAP
r
f 1' '
, r�
l ,I: ( � .a.
� € � 1SPREADER t i r LEVEL_
I _
i
t r 3
i I
s dd •#
� i
I
?i
! I
,
��- I 1PROP. C.O:s
f t
1
i -
i I
PAP
ELEV:--645.00
t r • � INv. OUT-642.30
I t = •;
t f
I f .�fisrr•m•
r
e �
f
I 10.0.
i
� P
t r 1 P 6" PERFORATED
f
I°f� ► r
j
E ! {
PVC UNDER RAINS
ICA
1� i
I'.
� � l SPACED AT 10' O.C. AND � '( O i
EXIST. 4 PVC RISER , `r t • i /
cC2 i r
SLOPED q I _ 1 LO ED A 0 50 a (MIN.)
O .�
T
V. 5 .4 ( ) I . � ELEV. 6 0 9 �/: ,
1, !
��E
r \
I
f i
r THE= €sAAC5
PROP. 6"'�ySOLID PVC FOR =
rfl \ _ _
GROUP P.C.
f i /
;i-CONNECTING
i f UNDERDRAINS
�I G
i r f• I�NGINEER N &
t
TO OUTLET STRUCTURE a 1�SURVEYING: I LAND
f
ao 0 =
rf
6 a !
N C -10 6 9 .-� �« .�.re;,. '� ! t ; :- ' r r u, vaa � •.: ; • • . i / .... III PRflP EXCELSIOR CURLEX � 0 . �
PROP. FES Z �� MATTING ON SLOPES (TYP.)
r ��i �� "••. ,.•' ti♦��
f tr � / �
r 1 1z­� (STABILIZE W I Y
INV..OUT--644.26 S LIZ£ N 7 DAYS)
Ti LX8 Wx18 D /
PROD. j SF-4 CONCRET>W
ll / B RIP RAP APRON OP WIDE DAM f \`�
j OUTLET STRUCTURE f
DE 42 / • (SEES DETAIL THIS SHT.) \ I
V.=649.70 °� aL -� INV. IN 6" 642.00i '
/� INV. OUT(30")=64Y'.68 Y
PROP. 38.00/L-F. OF
PROP. 1,8�0 S.F. - _ '` , 30" RCP 0 �1.00% 0N CAIQ�/ii
,OF SAND FILTER MEDIA _ �� ♦ ,•••• ,,•• �
/I 1 of p I 57' WIDE X 5' LONG �I �ES
pf
TOP OF RIVER ROCK .EL 644.70 \ \ A PROP. FE5 SF4 / <
TOP OF SAND EL.-L644.50
E \ �0' ` INV. OUT=B41.30 =L:
»
4
W/11 LX8 WX18 ;D
\ CLASS B RIP RAP y ' •: V��
,
lslER
BMP#4SAND FILTER����c{
SCALE: 1 "=30'
,`PROP/1O FT D£ GRASS - --_• 4" CONCRETE SLAB WITH
.,
SPILL WA IN CRT , F MH FRAME &COVER
EV.'=64 0 / # ELEV.�52.03
LOTJO i (SEE DETAIL SHT. C8.4)
�
O I 1 ® r (S DETAIL I `SHT.) / I
,� �;�! /I , - -r. ✓ _ �! >I� 4'-0" RECTANGULAR 6" WEIR
J
/ >, OPENING ON ALL 4-SIDES
A / / r s INV.=651.20
,,.. . ARp f . I f / 11
II �SIX i PROP. DI Y1 i PROP. UNDISTURBED Inn FT.
.i� # RIM=650.00 �) ® MILE CREEK BUFFER i
PROP. JB V1
RIM=651.00 �� I i✓ !� ,�f \ //
18" RCP 6UTLETpjpC
INV.=646.50
40�
-�
r-i
y i
18 OUTLET PIPE._.f
INV. =646.50
CB Z3 OUTLET STRUCTURE SUMMARY
WATERTIGHT RUBBER HOOT
4" CONCRETE SLAB WITH
MH FRAME & COVER
ELEV.= 652.03
100 YR WSEL 651 27
25 YR WSEL=651.20�
_ -- 2 YR-_WSEL = 654.73.__.
STEPS 0 16" O.C. (5 STEPS)
PRECAST CONCRETE RISER
(NCDOT STD. 840.45)
it ___-______r______
OUTLET 7
#5 TYPE 2 BARS FLOW PIPE.
® 12" O.C.
e° (TYP.)
19 MlN, MI
s
COLD ,tOWT
OL
i.._ 10" COVER FROM
ATOP OF CONC. BASE TO
3.5"CLR I t I RISER RLIP F I A P E A8 RISER BASE
(iYP.) W/ BOTTOM AND 6"(MIN.)
8
- OUTSIDE LIP
#5 DOWEL BARSi
4 EACH SIDE PSI REINFORCED CONCRETE
n O.C.
CONCRETE BASE
W 5 DOWEL BARS ®12
WALLS TIED AT EACH END FILL BOTTOM OF RISER
(TOTALW R DOWEL BA S = 9
'W/ 10 TNK 3600 PSI CONC.
ANTI -FLOTATION DEVICE DETAIL
NOT TO SCALE
FOR OUTLET STRUCTURES SF-4, SF--3, SF-2 AND Z3
NOT TO SCALE
GRAPHIC SCALELADERA SUBDIVISION
30 0 15 30 60 `';, UNION COUNTY, NORTH CAROLINA
1 INCH = 30 FEET ,, BM DESIGN/SPECIFICATION
NO, BY DATE REVISION �fe a'
1 RER 05 16 13 REVISED BMP �; si)�.sigr i3 : .lv!
2 ER 06 4 # UPDATE BMP 4
;�
R 2 3 ,r••>.�
F-- �r .r. E3 r �:�.
O
/ � COAL ENGINEERING GEf37ECH ICAL•SUiiVEYING
C
3 RER 8 12/13 PER UNION COUNTY S COMMENTS � .:
8720 RED OAK BOULEVARD, SUITE 420 ^4
CHARLOTTE, N.C. 28217 (`✓`
PHONE [phone] FAX [phone]
P;\stondarc€ Pncifio\NawSnwn Road Svbdivi$ion t«136\£nr�ineering\Rr.s't�t3 Urn Inds\Curreni\t2f3Ei--PEl.dwg, 8/26/2013 11:07,13 AM, rlravillos, 1:1

10` (MIN.)
MAINTENANCE ACCESS
TOP OF DAM = I �-.__.__...__.......
SPILLWAY _ I -.. ....
1 1
1 2 Tf€i'li`iE11ji:33i
INV. OUT A
_ E I 1 1 s -f E I 1.. j?
(_--
RCP OUTLET DIA = $
PIPE LENGTH = C
ANTI -SEEP COLLAR
(SEE THIS SHEET)
640
630
C:ws
D,4TUdf EMIR
6i5. 00
100--YEAR
%/ STORM EVENT
FOREBAY SPILLWAY ELEV = K
BOTTOM OF BASIN = J (TOP OF _RIVER ROCK)
XN 11` ' I( i� ilk
\;- ; s I
UNDERDRAIN
SLOPE (0.5% MIN.)
1, E. (IN) = E
ANTI -FLOATATION PAD
E. (OUT) = D
SAND FILTER MEDIA
(SEE DETAILED
CROSS SECTION)
FOREBAY WITH CLASS B RIVER ROCK
SPILLWAY 3' WIDE
SPILLWAY LENGTH = L
PERFORATED STANDPIPE
DETENTION STRUCTURE
WITH SOCK --IT COVER
(SEE DETAIL THIS SHEET)
VPVC
CLEANOUT (TYP.)
UNDERDRAIN INV = G
UNDERDRAIN
\COLLECTOR PIPES
(SPACE 10' MAX.)
DIA. = F
RIP RAP APRON
(OUTLET PROTECTION)
MENT FOREBAY
BMP
A
B
C
D
E
F
G
H
I
J
K
L
#2
617.00
18"
60 LF
618.20
623.50
6"
624.25
630.00
631,50
626.70
629.00
48
#3
607.16
18"
45 LF
607.83
609.50
6"
609.75
616.60
618.10
612.20
614.50
44
#4
641.30
30"
38 LF
641.68
642.00
6"
642.30
648.20
649.70
644.70
1 647.25
1 47
BEST MANAGEMENT PRACTICES SAND FILTER / DETENTION POND DETAILS
L'UUIlEU ALit3UNiJ KC Y ", 1 " 1
CORE TRENCH
FOR SEEPAGE CONTROL
LOCATE AT PIPE JOINT)
TYPICAL)
BMP DAM EMBANKMENT
QE' TECHNICAL SPECIFI�LQNS: -.-
A. A MINIMUM OF ONE (1) IN -PLACE DENSITY TEST SHOULD BE PERFORMED IN ACCORDANCE WITH ASTM D--�1556 FOR EACH 2,500 S.F.
OF LIFT AREA WITH A MINIMUM OF TWO TESTS PER LIFT. IMPROPER COMPACTION MAY RESULT IN PREMATURE DETERIORATION OF
THE EMBANKMENT AREA AND/OR DIFFERENTIAL SETTLEMENT OF FOUNDATIONS. SEE GEOTECHNICAL REPORT FOR MORE DETAILED
SPECIFICATIONS RELATING TO SELECTION AND PLACEMENT OF STRUCTURAL FILL.
B. FILL PLACED WITHIN THE CONSTRUCTED DAM EMBANKMENTS SHOULD BE COMPACTED TO A MINIMUM OF 95 PERCENT OF THE
MAXIMUM DRY DENSITY AS DETERMINED BY ASTM D-698 (STANDARD PROCTOR). ALL FILL PLACED WITHIN THE UPPER ONE (1)
FOOT OF THE RISER FOUNDATION AND THE SPILLWAY SUBGRADE SHOULD BE COMPACTED TO A MINIMUM OF 98 PERCENT OF THE
MAXIMUM DRY DENSITY AS DETERMINED BY ASTM D-698 (STANDARD PROCTOR). ALL FILL MATERIAL SHOULD BE PLACED AND
MECHANICALLY COMPACTED IN UNIFORM LIFTS NOT EXCEEDING NINE (9) INCHES IN LOOSE THICKNESS. THE MOISTURE CONTENT
OF ALL FILL AT THE TIME OF THE PLACEMENT SHOULD BE WITHIN +3 PERCENT OF THE OPTIMUM MOISTURE CONTENT AS
ESTABLISHED BY THE STANDARD PROCTOR TEST. SEE GEOTECHNICAL REPORT FOR MORE DETAILED SPECIFICATIONS RELATING TO THE
SELECTION AND PLACEMENT OF STRUCTURAL FILL,
C. ALL FILL TO BE UTILIZED AT THE SITE SHOULD BE SELECTED ON THE BASIS OF ITS PLASTICITY CHARACTERISTICS AND LABORATORY
COMPACTION TESTS. ON -SITE SOILS WHICH ARE FOUND TO CONTAIN DELETERIOUS MATERIAL, INCLUDING ORGANICS AND TOPSOIL,
SHOULD NOT BE USED AS STRUCTURAL FILL FOR THE SUPPORT OF SRUCTURES OR PAVEMENT. THE CORE MATERIAL SHOULD
HAVE A USCS CLASSIFICATION OF MH, CH, CL OR ML. PRIOR TO EXCAVATION THE CONTRACTOR SHOULD HAVE THE CORE TRENCH
MATERIAL TESTED AND APPROVED BY THE GEOTECHNICAL ENGINEER, THIS TESTING SHOULD INCLUDE DOUBLE HYDROMETER
TESTING TO ENSURE THAT THE SOILS ARE NOT DISPERSIVE IN NATURE.
D. CONTRACTOR TO COORDINATE CONSTRUCTION OF DAMS WITH A GEOTECHNICAL FIRM EXPERIENCED IN FIELD TESTING SERVICES FOR
EARTHEN DAM CONSTRUCTION. SPECIFICATIONS GIVEN ON THESE PLANS ARE RECOMMENDATIONS ONLY. REFER TO GEOTECHNICAL
REPORT FOR ADDITIONAL SPECIFICATIONS.
E. ALL FILL MATERIAL USED FOR CONSTRUCTION OF DAM CORE AND EMBANKMENTS TO BE INSPECTED AND APPROVED BY THE
GEOTECHNICAL ENGINEER PRIOR TO PLACEMENT.
GEOTECHNICAL SPECIFICATION
FOR DAM CONSTRUCTION
0+00 1+00 2+00 3+00
BMP #1 A SECTIONC-C
HORIZONTAL SCALE: 40 FEET PER INCH
EXISTING GROUND AT CL _ _ _ _ - - - - - _ _ _
PROPOSED GROUND
24"-36" R
(3)-##4 BARS 0 6"
W/ 3" CLR. EA. WA
CONCRI
COLLAF
INLET
,SAND FILTER BMP NOTES:
1. MAINTAIN 1.5% SLOPE (MIN.) IN BOTTOM OF BASIN TO SAND FILTER
2. UPON BASIN CONVERSION TO BMP, SOD BOTTOM OF BASIN (EXCLUDING
SAND FILTER), SIDE SLOPES (UP TO 5' DEPTH), AND EMERGENCY
SPILLWAY WITH TIFTON 419 BERMUDA GRASS
3. ALL SAND FILTERS SHALL HAVE A MINIMUM 20 FOOT ACCESS EASEMENT
CONNECTING TO A DEDICATED PUBLIC RIGHT OF WAY. ACCESS ROAD
SHALL HAVE MIN. 12' STABILIZED WIDTH, MAX. LONG. GRADE OF 15%,
MAX. CROSS -SLOPE 5%. IN ADDITION, A 10-FOOT WIDE PERMANENT
MAINTENANCE ACCESS EASEMENT MUST BE PROVIDED AROUND THE
PERIMETER OF ALL BMPS TO ALLOW FOR ADEQUATE MAINTENANCE AND
REPAIR.
4. ALL DRAINAGE AREAS TO A SAND FILTER FACILITY ARE TO BE
STABILIZED PRIOR TO INSTALLATION OF SAND.
5. CLEAN OUTS IN THE UNDERDRAIN SYSTEM ARE TO BE PROVIDED AS
SHOWN ON SHEET C5.7
GENERAL NOTES:
1. SEE CONCRETE BARREL AND RISER SPECIFICATIONS (THIS SHEET)
2. ALL SOIL UNDERLYING AND ADJACENT TO RISER AND FOOTING
TO BE COMPACTED TO 98% MAXIMUM DRY DENSITY AS DETERMINED
BY ASTM D-598 (STANDARD PROCTOR) UNDER THE DIRECTION
OF THE GEOTECHNICAL ENGINEER.
3. WATERTIGHT RUBBER BOOTS TO MEET THE ASTM C923-84 STANDARD
SPECIFICATIONS FOR RESILIENT CONNECTORS BETWEEN REINFORCED
CONCRETE MANHOLE STRUCTURES AND PIPES.
4. BMP #1 TO BE EXCAVATED AN ADDITIONAL 0.5' BELOW
PERMANENT POND BOTTOM TO ALLOW FOR SEDIMENT STORAGE.
NOTE:
SEE GEOTECHNICAL REPORT PREPARED BY
SUMMIT ENGINEERING FOR VALIDATION OF
2:1 SLOPES IN BMPS
CONCRETE ANTI --SEEP COLLAR DETAIL
N.T.S.
4+00
OPOSED STAINLESS STEEL
AKE WITH BOT. ELEV. TO BE
_D DURING SEDIMENT CLEANOUT
.EAN WHEN POND DEPTH=2.5')
NOTE:
DEVELOPER RESERVES THE RIGHT TO
SUBSTITUTE RIP RAP FOR RIVER ROCK
TOP OF RIP RAP
SPILLWAY ELEV. = fl
PROP. FOREBAY SPILLWAY
PROP. 0.20' LAYER OF RIVER ROCK WITH CLASS B RIP RAP
(AVG. DIA, = 0,75") SAND FILTER SIDE
OVER SAND MEDIA PROP. 10" I.E. = C 3 -� 3
TOP OF RIVER ROCK = A
TOP OF SAND FILTER = Q PROP. 10' WIDE X 1.5' DEEP
CLASS B RIVER ROCK
PROP. SAND BED LEVEL SPREADER
(ASTM C--33 MEDIUM \ � --~PROP. C.O. � ! {{{{{{
AGGREGATE CONCRETE SAND)
HORIZONTAL
. SURFACE
SOLID
WALL HOPE PIPE
.;.:
Y c
\--FILTER
SLOPED 0 1.0%
FABRIC
\_ FILTER FABRIC
z
g
o PROP. 6" PVC UNDERDRAIN
® 0,50% MIN.
BASIN
A
8
C
D
E
2
626.70
626.50
626.95
629.00
627.13
3
612,20
612.00
612,20
614.50
612.38
4
644.70
644.50
645.20
647.25
645.38
BMP SAND FILTER FOREBAY BERM DETAIL
NOTE: WHEN CONSTRUCTED WITH EARTHEN
WALLS/EMBANKMENTS, FILTER FABRIC SHOULD BE
USED TO LINE THE BOTTOM AND SIDE SLOPES OF
THE STRUCTURES BEFORE INSTALLATION OF THE
UNDERDRAIN SYSTEM AND FILTER MEDIA.
0.20' LAYER OF RIVER ROCK (AVG. DIA.=0.75")
OVER SAND FILTER MEDIA
DEBRIS SCREEN
i -1- - - (PERMEABLE FILTER FABRIC)
SAND BED
_(ASTM C-33 MEDIUM
AGGREGATE CONCRETE SAND)
--FILTER FABRIC
DEBRIS SCREEN
(PERMEABLE FILTER FABRIC)
12" GRAVEL LAYER
-FILTER FABRIC
MAX. SLOPE 4:1
PERFORATED 6" PVC PIPE (AASHTO M 252)
(3/8" PERFORATIONS, 4 HOLES PER RADIAL ROW,
ROWS SPACED 12" O.C. ALONG ENTIRE LENGTH OF PIPE)
(LATERAL SPACING AT MAX. 10' O.C.)
NATIVE BOTTOM TO BE SCARIFIED
AND NOT COMPACTED
SAND FILTER MEDIA SECTION
0
0
12" MIN. OF NCDOT #5
OR #57 WASHED STONE
DRAINTECH POLYOLEFIN ATRIUM GRATE
COVERED W/ SOCK -IT OR EQUIV.
FABRIC TO PREVENT CLOGGING
1.5' OF 10"SOLID . WALL
HDPE PIPE WITH 1.0" DIA. HOLES
(6 HORIZ. WITH 4 HOLES PER ROW)
COVER RISER WITH SOCK --IT OR OTHER
EQUIV. FABRIC TO PREVENT CLOGGING
FOREBAY SIDE
10"X1O"X10" TEE
% "- PROP. 10" I.E.= E
BEGIN HOLES 3" BELOW
INVERT ELEVATION
CLASS B RIVER ROCK
f� CHANNEL SLOPING 1.5%
/��TODRAIN PIPE FROM
..lr �L.� }....,. FES
FILTER FABRIC
3 L.F. OF 10" SOLID
WALL HDPE PIPE FILLED WITH
'CONCRETE TO 4" BELOW TEE
INVERT FOR ANCHOR
END WITH CAP
DESIGN REQUIREMENTS:
1. THE TOP OF THE SAND FILTER MEDIA MUST BE PROTECTED WITH A DEBRIS SCREEN OF PERMEABLE
FILTER FABRIC.
MAINTENANCE CONSIDERATIONS:
1. INSPECT FOR CLOGGING - RAKE DEBRIS SCREEN AND FIRST INCH OF SAND.
2. REMOVE SEDIMENT FROM FOREBAY/CHAMBER WHEN MORE THAN 1 FOOT OF STORAGE IS LOST,
3. SEDIMENT, TOPSOIL, AND 3 INCHES OF FILTER MATERIAL MUST BE REMOVED AFTER THE
ALLOWABLE DRAWDOWN TIME IS EXCEEDED BY 25 PERCENT.
4. ENTIRE FILTER MATERIAL AND UNDERDRAIN SYSTEM MUST BE REPLACED IF REMOVAL OF 3 INCHES
OF MEDIA DOES NOT RESTORE FILTRATION RATE.
ANNUAL INSPECTIONS:
OWNER SHALL SUBMIT AN ANNUAL INSPECTION REPORT TO THE STORM WATER ADMINISTRATOR WHICH
PROVIDES DOCUMENTATION OF THE CONDITION OF EACH BMP PRIOR TO EACH (NO EARLIER THAN 30
DAYS) ANNIVERSARY DATE (BEGINNING ON THE FINAL CONSTRUCTION INSPECTION APPROVAL DATE)
INTO PERPETUITY. ALL ANNUAL INSPECTION REPORTS ARE TO BE COMPLETED BY A PROFESSIONAL
ENGINEER OR REGISTERED LANDSCAPE ARCHITECT THAT HAS COMPLETED THE CERTIFICATION PROGRAM
PROVIDED BY THE CITY/COUNTY.
'•THE ISAACS '•9 i
GROUP, P.C.
ENGINEERING &
t * t :LAND SURVEYING? O ,
NO. C-1069 : i .;OF
`Allttiil!!//ffCA ly
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PLATING ZONE REQUIREMENTS:
ZONE 1: MINIMUM PLANT QUANTITIES PER 200 SQ, FT. OF SHALLOW WATER AREA
v 50 HERBACEOUS PLANTS OF AT LEAST 4 CUBIC —INCH CONTAINER (EQUIVALENT TO 2 FT. ON
CENTER MINIMUM. 1.5 FT. ON CENTER RECOMMENDED)
AREA PROVIDED = 2,771 SF
PLANT REQUIRED = 693 HERBACEOUS PLANTS (CHOOSE 3 FROM THE LIST BELOW)
ZONE 2: MINIMUM PLANT QUANTITIES PER 200 SO. FT. OF SHALLOW WATER AREA
C 50 HERBACEOUS PLANTS OF AT LEAST 4 CUBIC —INCH CONTAINER OR
• 8 SHRUBS OF AT LEAST 1—GALLON CONTAINER (EQUIVALENT TO 5 FT. ON CENTER MINIMUM; 3 FT
ON CENTER RECOMMENDEDO, OR
C 1 TREE OF AT LEAST 3 GALLON CONTAINER AND 40 GRASS LIKE HERBACEOUS PLANTS OF AT
LEAST 4 CUBIC —INCH CONTAINER.
AREA PROVIDED = 7,022 SF
PLANT REQUIRED = 1,756 HERBACEOUS PLANTS (CHOOSE 4 FROM THE LIST BELOW) OR
281 SHRUBS OR
35 TREES AND 1,404 GRASS LIKE HERBACEOUS PLANTS
TABLE 9-1
STORMWATER WETLAND PLANT
RECOMMENDATIONS
DEEP POOL
BOTANICAL NAME
COMMON NAME
FLOATING AQUATIC P ANTS
LEMNA SPP.
DUCKWEED
NELUMBO LUTEA
AMERICAN LOTUS
NUPHAR LUTEA SPP• POLYSEPALA
ROCKY MTN. POND —LILY
NUPHAR LU7FA SPP. ADVENA
YELLOW POND --LILY
SUBMERGED AQUATIC PLANTS
ELE0CH,4R/S ACICULAR/S
NEEDLE SPIKERUSH
ELEOCHAR/S OUADRANGULArA
SQUARESTEMSPIKERUSH
ELOOEA CANADEN515
CANADIAN WATERWEED
ELODEA MUTTAIL//
WESTERN WATERWEED
SHALLOW WATER
BOTANICAL NAME COMMON NAME
HERBACEOUS PLANTS
ACORUS SUBCORDAiZ/M
SWEETFLAG
ALISMA SUBCORDA7ZIM
WATER PLANTAIN
H)VROLEA 0119R1VALWS
WATERPOD
IRIS WI?OINICA
BLUE FLAG IRIS
JUNCUS EFF41SUS VAR. RMEI OR SOL UTUS
SOFT RUSH
LUDWGIA SPP.
PRIMEROSE WILLOW
PEL TANDRA VIRGINICA
ARROW ARUM
PONTEOERIA CORDATA
PICKERELWEED
SAGIrrARIA LARFOLIA
DUCK POTATO
SAGITTAR/A LANCIFOLIA
BULLTONGUE
SAURURUS CERNUUS
LIZARD'S TAIL
SCHOENOPLECrZIS TABERNAEM4NTAN/
SOFT STEM BULRUSH
SCHOENOPLECTUS AMERICANUS
THREE —SQUARE BULRUSH
SCHOENPLECTI/S PUNGENS VAR.. PUNGENS
SCIRPUS CYPER/NUS
WOOLGRASS
ZIZANIOPSI5 MILIACEA
GIANT CUTGRASS
SHALLOW LAND
BOTANICAL NAME COMMON NAME
LEGEND
ZONE 1: SHALLOW WATER
( 6" BELOW PWSE
ELEV. 628.5 TO 629.0 )
ZONE 2: SHALLOW LAND (
PWSE TO TEMP. WQ STORAGE =
ELEV. 629.0 TO 631.0 )
RIP RAP
ENGINEERED FILTER STRIP
ASCLEPIAS INCARNATA
SWAMP MILKWEED
CAREX TENERA
QUILL SEDGE
CHELONE GLABRA
WHITE TURTLEHEAD
EUPATORIADEL PHUS DUB/US
DWARF JOE PYE WEED
EUPATORIAOELPHUS FISTULOSUS
JOE PYE WEED
EUPATORIADEIPHUS MACULATUS
SPOTTED TRUMPETWEED
HIBISCUS COCCINEIS
SCARLET RQSEMALLOW
H18/5'CUSLAE-W5
HALBERDLEAF ROSEMALLQW
/fOSTELE'TZKYA WRG/NICA
SEASHORE MALLOW
LOBELIA CARD11VA1/5
CARDINAL FLOWER
LOBELIA £LONGArA
LONGLEAF LOBELIA
LOBELIA S/PHIL/WA
GREAT BLUE LOBELIA
RHYNCHOSPORA COL ORATA
STARRUSH WHITETOP
SACHARUM SALDWIVII
NARROW PLUMEGRASS
SHRUBS
ARONIA ARBU77F0/JA
RED CHOKEBERRY
CEPHALANTHUS OGCIDE'VrALIS
COMMON BUTTONBUSH
CLETHRA ALNIFOLIA
SWEET PEPPERBUSH
CORNUS AMOMUM
SILKY DOGWOOD
CYRILLA RACEMIFLORA
TITI
GORNONIA LACIANTHUS
LOBLOLLY BAY
HYPERICUM DENSIFLORUM
BUSHY ST. JOHNSWORT
ILEX DEC/DUAS
POSSUMHAW
ILEX GLABRA
INKBERRY
ITEA WRGIN/CA
ROSA PALUSTRIS
VIRGINIA SWEETSPIRE
SWAMP ROSE
ti►iill►ft
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t�►►►t�ItJttt��
VACCIN/UM CRASSIFOLJUM
I4BURNUM NUDUM t/AR. NUDUM
CREEPING BLUEBERRY
P055UMHAW
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THE ISAACS
GROUP, P.C.
ENGINEERING &
s `"'
M LAND SURVEYING; ©
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OF
GRAPHIC SCALE
30 0 15 30 60
1 INCH = 30 FEET
PLANTING PLAN: BMP 1 A WET POND
SCALE: 1 "= 30'
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