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HomeMy WebLinkAboutWPO201500067 Plan - Stream Buffer Mitigation 2015-09-1819 ]PR I , ftll �c� Hca PL . I 0 6 I IFFsr � I i cn �o Fo WESTERN RIDGE MITIGATION AREA WESTLAKE HILLS 56-99A ... / .. . \ / / ' .\., 1. / * 1 .. ,'�, r T !' , 3 / 'a r' ♦ i r 0 r S I ♦ / _ t F / / - s , : f f �' ', „ " - .. ' - a ., „ ,. , ♦, / of \; a' ,\ _ , , ' / /' Vt' "r fir', - r ' -' ,Ill ' .' I' ® ® I' Ili IIII � 'r , , I ' F P PGSS STR1=A ; : / 2 , r / 8 \ „ .. CHLINE E IS SHE ,; . r , s / ' 11, ER A a, / _ , / _ „ y ;.. , , _ 'i'r .. PROPOS_0 TREAM l' , a s , , , t , ,. � 1 r : - � � ., - ',' , ' i - �' /. , r '1. - ( ,, / f / > \ - ,., BItFFER l Y _ .. / - . r... , O, L �,._.. -.:t0 1, r - ',13'-.'.:.: L%/ t`X , /� .,i , .. I'llT AREa.(q 3 CRSS \ s, / 1 \'. ,'- , , /' - ,- ..- . 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I il ',� „-. ,l14. �,'' ; ; i ,'7 5�,r"/ / 1x, , . , ,.• :. ;! , 11 .., l / 4 / y i ,4\ /O7,r,�.�"1 _ :,-1/1 , ' 'I •I'I:1 f ii' ter ',.';.../' :.y /, r (?GIN -r ' I S F t _ , „ , 06 v 4or . /. r, ,! \, ; ✓,.: , p ' 1 _,. /' " - ' / Q \ , t , 1 ,' �f(y¢Q Y� . COUNTY OF ALBEMARLE s�' ;'f. ,-.<. .---t r C �. J 1 , , , _ of Community Development \ • ! - 002 %: ",:c't ` l . . Departmentrt3' P .; ,,.. 401 xA,7" a Road -- - �. \, ,1 , r \ _,. 0 I Y 7,, it 'nia 229 fl2 ) , Charlottesville, V 1 i t —,:. 15 Jul 2015', t '20 1Q4 ,: r-' S • y ;/- r}^\ N ♦> SF `�'' /-/ ' '�'= r- . PROPOSED ST� / , , ,/ {jp BUFFER . <I 10 / �� ��11 �^•�`��:.;''11 ' AREA' ACRE- / - ,� a r ; / % %": r r Mr. Micheal Myers, P.E. C.F.M t .,: zQ Mve Io Ea.' � �.>>..,: aFFr� ,�,�-,r, , 1' -, , r,; Dornlrllon Engineering , , o "� ri' ''r `� "X; y • . / :, / r:r'' / , b' D I . , ,. .1 "I ,. _.. _ ..'- :,.:. '{004AORI~S)','', /'„6:; /;� + t r 'S�,`'.`:,:a,j r'i`, r ''"i' 'I " '' // > y -y\\ 172 South Panto s Drive VA 22911 -_.„ - I :,1. .:;-, ' "/:a :a , / Charlottesville, ,::, f , / i i. / n i - / ♦ �. , ,..._.. _ r, - - `; 201400094 -Mite Mitigation proposal .. --.�> ; ,-,,'. ,- I” / �. ;ri ` , %i., ,/ Re: Whittington Phase B (WPO201400094) g p p r - - ',• �,'' , - Dear MI. M ers; ,. - 'y {'./ '"" l ? ! ;. 4 : / ` r /.v' „s.. /' ,/ ,r g // :. w t %''`° ,.� 1 ' 'vi .. �,` l Ze ;''^ i x < j y/ , `i>' - , ,p " r' /t 's r �' ' y ' '" i /' i / /' / ,, /, Albemarle beem ,' / erg:n ..,' r r i' ,., / ;' , , ur re uest for rovialn miti ation in Crozet for the develo menu in southern has �' \ . ' ; ,` ,_ ' ` reviewed. x `�<:' �}y^ S, " ,. / 4-,`r,r•r-7 n, / ;" ;' ;� r -r , / tY ^� '� "r„/.. rte: :y zJ• '`Y,,,.`' .,n`r'',, .r" ,, ,' r/ /_ - ,/ vi'' ,, ,/ ' t' /' ,'' / , /'' This can be approved with the mitigation plan. This would not normally be acceptable, in a different �, - :n �, �� r ' r .. ' receiving screams. However, considering this is an older zoning in " , part of the county on different r g , g g ,, ; „/ ;*";' / ria , . / ; ' / .1 t .&-"�'-« ,./'' / r rY " ' / _!r'-�--v—..... ": ', ttin a which had a vested Ian riot to the Water Protection Ordinance adoption, this seems a `' ' ,y °' ' * ' , / / ' lU gt n, P P t ... . .. .,,. ., . ,, .. _ r reasonable compromise. si - ,,, ,:, �� - '", : / , / r r / �,`, ' 4" , / / , , / , , The referenced section of code, 14-403, does not apply to mitigation. This code refers to state code A 1-1 \,_ /y`".r " I %' %/% > r / �' 7 r'; / ,/' / � j -,I VI i Z 9 regarding water quality treatment options to meet the state stormwater management regulations. . `I ;?", ' , , / ,v,''' `` " ,/ ,/ r,(r=/ /' : " _ _ However, the county attorney has been consulted, and indicates that there is flexibility on the art oiEthe `}, / -.'x�'.--'/ ,L ,, / " ; .fly ;, / _ --�--- --r''Y p r ',,; ;, f f,! r� / <,,✓'i" r'r '/'/,/ ,4r _ , "I / , ` �f ` - , . -' _. , _17- •'. program authority in how mitigation is to be provided. = ,' /' r ,.' / / / /,' '' Thank you for your continued work on this plan. Sincerely, i . o - . Glenn Brooks, P.E. County Engineer Gl_:B.! ' Copy-: . . Fite: letter.doc 11 , ;'. - ' , 1' ' ,'�/,ys ' j' ` ' PHA�,/LPPROj/�D ,/ n`'".I,'' ;A" -}.- �, : /, ", _ ,:r; i // MIj4G9a ION AP,EA 1dYP) ' ,,' /, ".J 11 ";, ..,../ , i / , ' PNASF,'IAPP(jdyS"' v\''i�y,-y�'/ ' , �'' -f,,, �-,' �:'r", ri''f ,...,.` Iw/' , `>' .�' /'„f/ Jr{ 19ATtONf{RF/<(TYP , / , / 'I ° ,-.(, ... .. .. /'r•' ” +JJ i ` >, 11 , /_,V it/,..,, a..../ / , > ,,.,� % / / ' / / , /'.'', i!;,' , ' X, I,� , ' / r Taw' > _' '` - -•- / 't. 1 ' / / , , ,/. ' / / / s' �, ' .r i ;11 11 / , ., ...' , B vta�A / ' I - / / ,' ` / �' /' , i .. ;-, �, ; ,' , ,! ��E,�(o,; Acre .... , �- ,:'-,; ' Y.,.: /' , , n \ \ , /, , ,/ _, -� '`� �w w ' -, 1 MITIGATION PLAN MP1 NOT TO SCALE .44 �,, , &, �7a", 56--53+ (56-53, 56-53A) I t ( < , r ° ''3 A ., �� \_q 1E? 7'` @;,rrgkok '95I Thai Cans€ne o* Harris Teter I 1': ,. 6 I1% Irk 11�1 YY r,_11� .. 1�:, , 'rSk: 0 w , �\O TS 4ihc"''t'), N, 5 �� 4` VICINITY MAP FOXCHASE 1"= 1,000 I APPROVED by the Albemarle County Commun't De el0 P m ent Department a rtm ent Date 4 tr,S­ OFFSITE MITIGATION SUMMARY file..y/ o coo 3.7 AC MITIGATION AREA PROVIDED ON WESTLAKE HILLS SUBDIVISION (WPO 2014-00031) TO MEET THE MITIGATION REQUIREMENTS FOR THE WHITTINGTON SUBDIVISION (WPO 2014-00094) STREAM BUFFER DISTURBANCE WHITTINGTON PHASE B Impact Area 1: 8,088 SF Impact Area 2: 419 SF Impact Area 3: Crozet Family i<�edici'16 Impact Area 4: T',+' =,tx Impact Area p 5: 20 676 SF Impact Area MITIGATION AREA 5ttzrr 1iAl13fM; r}a U Gi .... I2d`-...".., -,. „ 4, 11 807 SF , Impact Area /Ye. ctY fly rr i 0°nes • 76,650 SF �_j Z 1 2 x IMPACT AREA M UI`t�tni6$'w'itgt5 A 153,330 SF �is SF = ' 'l C q YS i r Z11If , t l� ,1 $ . "Y, ,7 s ' ., , 8 " , , i < £ .1) t •rT.Fr. r0t6 MITIGATION PLANTINGS SUMMARY :;, c t .. 1 E Lt .44 �,, , &, �7a", 56--53+ (56-53, 56-53A) I t ( < , r ° ''3 A ., �� \_q 1E? 7'` @;,rrgkok '95I Thai Cans€ne o* Harris Teter I 1': ,. 6 I1% Irk 11�1 YY r,_11� .. 1�:, , 'rSk: 0 w , �\O TS 4ihc"''t'), N, 5 �� 4` VICINITY MAP FOXCHASE 1"= 1,000 I APPROVED by the Albemarle County Commun't De el0 P m ent Department a rtm ent Date 4 tr,S­ OFFSITE MITIGATION SUMMARY file..y/ o coo 3.7 AC MITIGATION AREA PROVIDED ON WESTLAKE HILLS SUBDIVISION (WPO 2014-00031) TO MEET THE MITIGATION REQUIREMENTS FOR THE WHITTINGTON SUBDIVISION (WPO 2014-00094) STREAM BUFFER DISTURBANCE WHITTINGTON PHASE B Impact Area 1: 8,088 SF Impact Area 2: 419 SF Impact Area 3: 7,444 SF Impact Area 4: 20,625 SF Impact Area p 5: 20 676 SF Impact Area MITIGATION AREA 6: 11 807 SF , Impact Area 7: 7,591 SF 76,650 SF MITIGATION AREA REQUIRED: 2 x IMPACT AREA 153,330 SF 2 x 76,650 SF = 153,330 SF = 3.52 AC MITIGATION AREAS PROVIDED ON TM 56-53+: 3.7 AC F** MITIGATION AREA MITIGATION PLANTINGS SUMMARY Mitigation Plantings (bare root seedlings or whips at 1,210 per acre, approximately 6' x 5' on center) Medium to Large Deciduous Trees Acer rubrum Red Maple Betula lento Black Birch Liquidambar styracifluo Sweetgum Small Canopy/Understory Trees Amelanchier canadensis Serviceberry Cercis canadensisRedbud Magnolia virginiano Sweetbay Magnolia * Taken from "Riparian Buffers Modification and Mitigation Guidance Manual" by DCR, chapter 5.1, Reforestation/ Establishment Table B. 5—year maintenance and performance guarantee required. ,210 whips per acre © 3.7 Ac = 4,477 total whips Minimum survival required after two growing seasons = 600 plants/acre z _ `w' r �o ' �. r� MIC L F. MYERS � c. No. 33028 a P, q-1rl -, ti S G S I 0 NAL E Awr•'•1 0 W Y U W = 0 CIO Q w ''O^^ A V1 w W m A LL W A >- m 0 W z 0 W 0 A 0 4 ca cc w J U UD ,,^^ v! Z © H � 1� f�- CA W W Q 1 8 ca w Q Z W R C; -, E 2 M TW >-4C ) Z (2-1 0 I 'fir', O P1, O 1� I � M P_f a ^1 I • u� 1� 1 o IM U N E" � �, � r� T��/ �� V V 1 &_4 � � Q � � C r•� a J �-� W r,� J 1� F- � ::D w � � W DOM. PROJECT NO:13.0035 INDEX TITLE: r-) I MT SHEET NO: 1 OF 1 DATE: 07/21/2015 ■O . Fm O z _ `w' r �o ' �. r� MIC L F. MYERS � c. No. 33028 a P, q-1rl -, ti S G S I 0 NAL E Awr•'•1 0 W Y U W = 0 CIO Q w ''O^^ A V1 w W m A LL W A >- m 0 W z 0 W 0 A 0 4 ca cc w J U UD ,,^^ v! Z © H � 1� f�- CA W W Q 1 8 ca w Q Z W R C; -, E 2 M TW >-4C ) Z (2-1 0 I 'fir', O P1, O 1� I � M P_f a ^1 I • u� 1� 1 o IM U N E" � �, � r� T��/ �� V V 1 &_4 � � Q � � C r•� a J �-� W r,� J 1� F- � ::D w � � W DOM. PROJECT NO:13.0035 INDEX TITLE: r-) I MT SHEET NO: 1 OF 1 DATE: 07/21/2015