Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
WPO201500057 Plan - VSMP Minor Amendment 2018-10-11
GENERAL NOTES OWNERS. • AVINITY ESTATES LLC 455 SECOND STREET SE, 5TH FLOOR CHARLOTTFSVXLE, VA 22902 DEVELOPER: RIVERBEND DEVELOPMENT, INC. 455 SECOND STREET SE, SUITE 400 CHARLOTTESVILLE, VA 22902 ENGINEER: COLLINS ENGINEERING 200 GARRETT ST, SUITE K CHARLOTTESVILLE, VA 22902 TAX MAP NO.: 09100-00-00-016CO 09100-00-00-016EO ZONE. PRD ZONE. PRO DB 4319 PG 247 DB 4571 PG 88 09100-00-00-016AO 09100-00-00-01400 ZONE- PRD ZONE- PRD DB 4571 PG 88 DB 3472 PG 015 TOTAL PROJECT AREA: AVINITY ESTATES 09100-00-00-016CO — 2.472 AC. 09100-00-00-016EO — 4.982 AC. 09100-00-00-016AO - 4.432 AC. 11.886 AC, TOTAL ZONING: PRD - PLANNED RESIDENTIAL DEVELOPMENT - ZMA 2013-016 TOPOGRAPHY- SURVEY & TOPOGRAPHY PROVIDED BY ROUDABUSH GALE & ASSOCIATES, DATED AUGUST, 2013. TOPO FIELD VERIFIED IN JUNE 201 Z DATUM. • NAD 83 FLOODPLAIN: THERE IS NO FLOODPLAIN LOCATED ON THIS SITE FEMA MAP ID 51003CO407D & 51003CO426D DATED FEBRUARY 4, 2005. STORMWATER MGMT STORMWATER FOR AVINITY ESTATES WILL BE HANDLED BY A PROPOSED STORMWATER MANAGEMENT FACILITY JUST UPLAND OF THE EXIS77NG SWM POND. ADDITIONAL AVINITY ESTATES STORMWATER WILL BE TREATED BY A SECOND SNM FACILITY AT THE SOUTH OF THE SITE. SWU SHALL MEET ALL STATE REGULATIONS REQUIRED WITH THE DEVELOPMENT. FIRE & RESCUE • AS REQUIRED, ALL FIRE FLOWS 107HIN THE DEVELOPMENT SHALL BE A MINIMUM OF 1000 GPM AT 20 PSI. ADDITIONALLY, FIRE HYDRANTS SHALL BE PROVIDED ALONG THE STREETS FOR FIRE FIRE PREVEN77ON AT A MAXIMUM SPACING OF 500 FT PER IRA VELWAY. PROPOSED USES- SINGLE-FAMILY ATTACHED UNITS & TOWNHOUSE UNITS SINGLE FAMILY ATTACHED UNITS? 51 TOTAL UNITS (AVINITY ESTATES) TOWNHOUSE UNITS• 51 TOTAL UNITS (AVINITY ESTATES) DENSITY- TOTAL NUMBER OF UNITS PROPOSED: 102 UNITS PROPOSED DENSITY • 8.58 UNITS/ACRE MAXIMUM ALLOWABLE UNITS WITHIN AVINITY ESTATES: 102 UNITS MINIMUM ALLOWABLE UNITS Wl THIN AVINITY ESTATES: 60 UNITS SITE AMENITIES,• CLUBHOUSE/PA VILION AREA (1, 314 SF, 1, 000 SF MIN) TOT LOT (4,000 SF MIN) DOG PARK (10,000 SF MIN) PASSIVE RECREATION AREA (6,000 SF MIN) ACTIVE RECREATION AREA (13,622 SF; 11,500 SF MIN) RIGHT-OF-WAY 2.27 ACRES OPEN SPACE.• 2.32 AC OPEN SPACE (AVINITY I PLATTED) 3.60 AC OPEN SPACE (AVINITY ESTATES) 5.92 / 21.13 AC TOTAL AVINITY I & ESTATES = 28.07. LOTS• 6.01 ACRES SETBACKS.• FRONT - 6' MIN (WITH VARIATION SUBMITTED TO THE COUNTY) MIN, 18' FROM FRONT OF GARAGE TO BACK OF SIDEWALK SIDE - 5' MIN REAR - 10' MIN INTERIOR, 20' MIN WHERE LOTS ARE ADJACENT TO 774E PROJECT BOUNDARY CLUBHOUSE/PAVILION - 8' MIN FRONT, 5' MIN SIDE, 10 MIN REAR SETBACKS SHALL INCLUDE A 4' FRONT AND REAR ENCROACHMENT OF ALL SETBACKS WITH PORCHES, EAVES, AND OTHER ARCHITECTURAL ELEMENTS OF THE HOMES SETBACKS SHALL ALSO ALLOW UP TO A 1' SIDE YARD ENCROACHMENT FOR ARCHITECTURAL ELEMENTS AND OVERHANDS, PROVIDED THAT THE ENCROACHMENTS ARE FIRE RATED PER BUILDING DEPARTMENT REQUIREMENTS WHEN BUILDING SEPARATION IS REDUCED FROM 10. SETBACKS WERE APPROVED WITH THE BUILDING MODIFICATION WAIVER REQUEST WITH ZMA 2013- 016. BUILDING HEIGHT 35' MAXIMUM HEIGHT PARKING. • EACH PROPOSED LOT SHALL PROVIDE OFF-S7REET PARKING FOR TWO VEHICLES IN A MINIMUM 18' DEEP DRIVEWAY AND A GARAGE. ADDITIONALLY, ROADWAYS SHALL ACCOMMODATE OVERFLOW PARKING ON -STREET WIN ON-S7REET PARKING BUMPOUTS (30). TOTAL NUMBER OF UNITS: 102 UNITS TOTAL NUMBER OF OFF-STREET PARKING SPACES PROVIDED: 102 UNITS X 2 SPACES PER UNIT = 204 OFF-STREET PARKING SPACES TOTAL NUMBER OF ON-S7REET PARKING SPACES: (1) SPACE PER (4) UNITS REQUIRED: 26 ON -STREET SPACES REQUIRED TOTAL NUMBER OF ON -STREET PARKING SPACES PROVIDED: 30 BUMPOUT SPACES AN ADDITIONAL (10) PARKING SPACES HAVE BEEN PROVIDED AT 7HE CLUBHOUSE PHASING: THE PROJECT MAY BE COMPLETED WITH A MAXIMUM OF 4 PHASES, AS SHOWN ON THE ROAD PLANS (1N CONJUNCTION WITH BLOCK PHASING) STREETS: CURB & GUTTER PRIVATE STREETS THE ACCESS ROADWAY SHALL BE MAINTAINED BY THE HOA. UTILITIES.- SI7E SHALL BE SERVED BY PUBLIC WATER AND SEWER CONSTRUCTION TRAFFIC: ALL CONSTRUC7ION TRAFFIC FOR THE DEVELOPMENT OF AVINITY ESTATES SHALL EN7ER THE SITE FROM 7HE EXISTING DRIVEWAY AT ROUTE 20. DENSITY AVINITY h 107 UNIT5/9.243 AC = 11.58 UNITS/AC AVINITY ESTATES. • 102 UNITS/11.886 AC = 8.58 UNITS/AC LANDSCAPING: ALL PROPOSED ROADWAYS SHALL HAVE STREET TREES IN ACCORDANCE WI7H ALBEMARLE COUNTY REQUIREMENTS ALL TREES SHALL BE LOCATED OUTSIDE OF THE ROW WITHIN A 6' WIDE LANDSCAPING AND MAINTENANCE EASEMENT AND ALL STREET TREES SHALL BE MAINTAINED BY THE HOA. LIGH77NG: NO OUTDOOR STREET LIGHTING IS PROPOSED AT THIS TIME. THE FINAL 517E PLAN SHALL INCLUDE AN OVERALL OUTDOOR LIGH71NG PLAN FOR THE PROJECT. TRAFFIC GENERATION.• TRIP GENERATION BASED ON ITE TRIP GENERA7ION MANUAL (8TH ED177ON) 51 SINGLE FAMILY UNITS (CODE 210) 488 VPD (244 EN7ER/244 EXIT) AM PEAK: 38 VPH (10 ENTER/28 EXIT) PM PEAK.• 52 VPH (32 EN7ER/20 EXIT) 51 TOWNHOME UNITS (CODE 23O) 296 VPD (148 ENTER/148 EXIT) AM PEAK: 22 VPH (4 EN7ER/18 EXIT) PM PEAK.• 27 VPH (18 ENTER/9 EXIT) TRASH: ALL UNITS SHALL HAVE AN INDI WDUAL TRASH CONTAINER AND THE HOA SHALL PROVIDE TRASH COLLEC77ON SERVICES, RESERVOIR WA TERSHED: MOORE'S CREEK WATERSHED AGRICULTURAL —FORESTAL: NONE PLACES OF BURIAL: NONE RETAINING WALL: ALL WALLS AS SHOWN ON THIS PLAN SHEET AND 7HE GRADING PLAN SHEET SHALL NOT EXCEED 6' IN HEIGHT. AFFORDABLE UNITS. • CASH IN LIEU OF AFFORDABLE UNITS WILL BE PROVIDED (15%): 0.15 X 102 UNITS = CASH FOR 16 UNITS REQUIRED for 0 0 AVINITY ESTATES WPO PLAN AMENDMENT SCOTfSVILLE DISTRICT ALBEMARLE COUNTY, VIRGINIA A+ u! LL r i Ll i'� i . M ' I W] I rower SOULHFRN PARKWAY MILL CREEK LAKE REYNOVL4 �a �,a [9j�ACE EW EN SCHOOL MILL CREEK SOUTH Tl ,toe R,TPIEDHONT P'f� 4] VIRGINIA coMMuNnY cnLLecE 1f , 01MC&10 HIGH VICINITY MAP SCALE: 1" = 3000' General construction notes for Stormwater Management plans s.. All dams and constructed fill to be within 95% of maximum dry density and 2% of optimum moisture content. All fill material to be approved by a geotechnical engineer. A geotechnical engineer is to be present during construction of dams. �"---T 2. Pipe and riserjoints are to be watertight within stormwater =-- management facilities. 3. For temporary sediment traps or basins which are to be convene to permanent stormwater management facilities; conversion is notto take fi place until the site is stabilized, and permission has been obtained from the County erosion control inspector. WPO PLAN SHEET LIST 1 _ If r, �; Sheet Number Sheet Title COVER SHEET 2 EXISTING CONDITIONS 3 GRADING PLAN �` ✓ 4 GRADING PLAN ✓ f 5 STORMWATER MANAGEMENT PLAN 6 STORMWATER MANAGEMENT DETAILS W 7 EROSION & SEDIMENT CONTROL NARRATIVE & DETAILS 8 EROSION & SEDIMENT CONTROL PLAN PHASE I oJ� 9 EROSION & SEDIMENT CONTROL PLAN PHASE 11 Gi 10 EROSION & SEDIMENT CONTROL CALCULATIONS F / rFF � SHEET LAYOUT SCALE: 1" = 100' NOTES.• 1) THIS PROPERTY DOES NOT LIE WITHIN AN AGRICULTURAL AND/OR FORESTAL DISTRICT. 2) THIS PROJECT IS NOT LOCATED WITHIN FLOODPLAIN LIMITS, BASED ON FEMA MAP NUMBER 51003C0407D & 51003C0426D ADOPTED FEBRUARY 4, 2005. 3) EACH LOT AS SHOWN HEREON CONTAINS A BUILDING SITE- WHICH MEETS THE REQUIREMENTS OF SEC77ON 4.2.2(b)l (18-520) 4) ALL PROPOSED EASEMENTS SHALL BE DEDICATED TO PUBLIC USE. 5) STREET TREES SHALL BE PROVIDED ALONG ALL THE PUBLIC STREETS 40' O.C. IN ACCORDANCE WITH VDOT AND ALBEMARLE COUNTY STANDARDS TOTAL 10 PAGES APPROVED by the Albemarle County Community Development Department Date 1 File20a Avinity II Range of Residential Uses Rezoning Allowable Uses Proposed Uses Block Townhome (min -max) Single Family Attached/Detached (min -max) Proposed Townhouse Units Proposed Single Family Attached/Detache A 0-20 0-9 12 5 B 0-30 0-15 15 8 C 0-30 0-15 14 13 D 0-34 12-32 10 25 TOTAL 0-122 12-71 51 51 TOTAL U NITS: 102 1) Within Avinity I, a 24 unit condo building is proposed to be eliminated and in its place, a maximum of (8) townhouse units are proposed. 2) The overall density (number of units) for Avinity I shall decrease from 124 units to 106-108 units with the approval of this rezoning. The original proposed condominium building shall be replaced with (6) - (8) townhouse units. 3) The proposed minimum number of units within Avinity II shall be 60 units with a maximum number of 102 units. The density shall range between 5 DU/AC and 10 DU/AC. .vTH U SC PT R. COLLINSZ U No. 35791 1�1 O �SS,1 ANAL Z W Z z Uj � o H O = rY w �, CC)n O W o Z D O J ce Q 1 C G w w W Ce H d W a U) w LU "0 '* '* W r�-1 M � for =A / / EXISTING SANITARY SEW R ' LA gar , � h, I, / �,ABANDONE IN P CE -- - 1 ar w EXISTING WATERLINE / i'' AB NDONE IN P C s°/lr far +<< ^ / ,!/' — - - EXISTING SANITARY fi / ------ ----- �- / --- %5;r - rf SEWER = - - _ —_ ----- ---- 0 COLLI EXISTING SWM POND / t°y f ? r --- -- 0S C T R. NS to-r - N l FOR AVINITY I L / - �, 5s ��, . ESCi15TING WATERLINE '-' / U No. 35791 1 ISTLNG RRAA i %' _ 7�5 s4g / EXISTING MANAGED A -�. t. - : •Nf7-13 N17?r+( - J! +J({j'/, /. - - �, L "y/ f /� ,} r J Cl� ��` + 4 V ?! i L STEEP SLOPE TO BE / IONAL E PACTED P. f / TMP 91� / i - JASPER L. & MALLIE P:-HAYNES_ j ��' Q ld -i 7 -`" ! t _ D.B. 85 PLAT %. D.B.8 619 P 36� P --__ _ j {t '^ tr } j' y ' f - ---- � aG :... :l ta/ \ 1 • - .: :. :. sons. W d _ __-- _ t...' t � :.. °r , -. , a rl J��t _.____ _ �- � Lu / -91 P. - r `- 1— _ r f jtr \ - _ O �_; - ) w m w I > i / f A �' - r o A \ / t a t, . _ _-. 16D _ f l J1 , _ _ _ 1 ., � . 1 ,. _ _ .. >..:�,: ,,. _ .. '\ to �' r - o sty � ---_. _ _ ,. _ '-�. .: HOLD! r LLC. _ , ,. _ . ,:. �. \ _ w w _ _ _ - E CIO KAPPA SIG �`'��," �-.. / F- t� � _PRAYER 1 � , � � , a m -702 _ 7 LLJ Q D.B.- .___ r. o �.,.. 'Lu � 6C8 PLAT __ —__ w � - , --- / H LLI CL ce _ Lu . P4.. •\. 3 7 ce Lu 4 za 1Ir7 __ - , - =_s 1 0 ( - •.. YMP 91-16A2 ,-�. ``� ,, ti �� --- ' C TTSVILLE �'D. HOLDINGS LC. e to \ 1 3 t1/: \ ,� % i - /� -5+8�) \ # r ( f T- r� - C O KAP 7`- % PA �S1G FRATERNITY \ / ar tar I � '\ II S �, (# '' t# 7,�,a�, 1�'Il'I �\ � l �--= � � Ott ��- ._ .�, � •, \ �``, � � � 702+'lt:/ j f / a3 i a� °r +/forI ' l f l s• \ ` \ \7,_ \ \ D. 1080 P. 173 �/j k # i ;: /r fp j/ ,,'rl, \I / / '' / // f ' [/p] LAC , / 86 `+=5•� 11 j( f * +' r I / / \ `\ 1 , t r l<:. f EXISTING iV�A ERLINE EXISTING SANITARY ------.� � -- ice'--•• ` ,-'ois '�^;Ls it : � -=-�` r 't .1 �t� t,{ '� �% / j f` % / / S WER '' {') .-""'�\ v\ 7 � � _-� >~""..•,.oti - 1 / % \ � ,lam / � / � �,i i k LU (0 / d N N iTMP PO 35 1 \ !, o N( 1 JAMES R MpSS 1 � � / j % _ � � � t-� ��` I � I / � ,/ � ' � \� l 1 � � � � � / 471 . � D.6. 2198 A 54, 1 ; �� , .v r , / / 1 \ v ' / / / D.B. 15 6 P 71 / u7; / l , / \ v <� ,// 15 r'/�� W.B. 16 4�, PROPERTY BOUNDARY , L9 z ct? PP, / cy) /� \ / / 1 Q' EXISTING PARK NG OT ,. l / TMP 90-35DTM \ ' ' ✓/� /+ / r / O 4 / 7' / ; N/F HRAULIC SAND COM ANY�IIVC• , / / !/ D.B. 862/P. 200 / �/ ` / ' N/F AWN TY EST1A ES, LLC 1{ l \ 11 - i D.B. 457 \ � 4 � /� .�, >) %// ►� �Ci / i r / i% 1 f' \ u� 3 } EXIS�fIN KAPPA SIG A _- � ` r8 1 / 1 HEA QU RT RS BLDG. / 1 Q / CV 4 ISTING 8 SANITARY j , WER��' 0 V, /� / l 04 LL.I �LINE / t I G WAT RLINELd } / / SAt TAR SE ER ESMT. " ' �� / / / / Ct) � - _ � YMP 91-1 Al + D.6.2940, PG. 530 \ lMP 90-35B / ' f / N/F SC TTSVI�LE ROAt HOLDINGS LLC O S/TRU TION ESMT. ./� ,/ r - _o NSF S�UTN 1DE CHURC OF GOD, / - _ l` l I D.B. 59 �A. 3 D.B 4564, PG. 258 / D839 P. 32� N ' r, x x -- / / 4-I - --�/ / 1 /' '' % / ; l (1 �` / X, EXISTING �UILDINGS TO BE DEMOLISHED DE OLISHED (rTYP) VTEOR 448884.PRIOR TO HE DEMOLITION OF fHE MAIN ✓ ,� / /� HOUSE AND ITS ASSO IATED STRUCTURES,� r1 U THE DEVELOPER SHALL DOCUMENT THE j / / � Y � / X t � J / / / ` , ' � \ W w � ( t /' � /// f r STRUCTURES WITH ELED PHOTOGRAPHS. \ f ` - DOCUMENTATION SH�LL INCLUDE ` --� x° X - ` � r� � r �r � � - � / l / ((/(I / // / Q ` / i i I r, PHOTOGRAPHS SHOVI�ING ALL SIDES OF/EACH / �j / L STRUCTURE CONTEXT OF THE SITE A SKETCH i '` �'�,s°'., '�' I ) 1 \ - /1 p,�Y <r'a },. _.. i +>S62•o002„E 4i8.9� dye \ a..... \ 5 5.00 1 ' 4 / u / S6157 53 € S6i 57 3 E �3 1 _ _ FLOG PLAN AND, A SKETCH PLAN .OF THE SIT ..:, / .::.. i, , t �;���,.w�� :.::. ,. ;,:< , �,.,:. , ... � :.,......., , :.. , .. ,,, ..:::... �: •, r'1-iE`� -=�,.` �y;-tt / 1 i IDEN-rFYING THE P�� ' OTO LOCATJONS SHOWN 73 46 % _ / /, iSTINGCOMMERCIAL ENTRANCE OHI ' r- Sri / / / / /l /\ AS PROVIDED. THIS DOCUMENTATION SHALL / ' 't 1 - n4�k - -l�HE i � / / ! /,( P / \ ,�{C--+---- f /O KAI�N/� SIGMA PROPERTY W F— W BE SUBMITTED TO ALBEMARLE COUNTY r � - �I �t �ti-{ 485.14 J C MMUNITY DEVELOPMENT PRIOR TOT E 1 i / off'': �` v / �' PROPER- Y BOUNDARY j / % / / �, ( ' i E ISTING O ERHEA [ \ \ / REQUEST FOR A DEMOLITION PERMIT FOR ANY f / f 'r � �' ��� �, POWE�LINE TO E W /OF THE STRUCTURES.':,P 1) REROUTED ( C� �, ir ` , �� 1 i / U) `, \ 'ERCFfcEN / ; : /; °k / / ,r 4 y tf) , \ 0- \ EXISTING OVr-RIIEADGREEN / / �■� W / ',` EXISTING BUILDING I \ \` \PO\V1(ERLINE EMT _ / % W I O ers'� tF_ , � l 't ` � H TO BE DE OLIS ED v\ \ \ �� 1 \ \r zN / l / U) / `W ' / p �� �a d �l'`a�r µrr ^ r 1 � �! \ \ �. EYfStGRP U ��{{ :+v.. V1 : c EFN 50 25 50 100 200 W PT�� p6 Jr ! 7� vb {' A }�1 k , � / � k��7,l��r��,r'9�sd ����lel�•� ����� � � � � i � � � � � � � � � � � � � � , �� / l ` YMP 91-16A ta)a t / + / / I N/F AVIDITY ESTA7gS, LLC f / / / '� 4a / /j �' d / D.B. 4571 P. 8� \ l� ti'� �� vvv (IN FED } �� Q T $ 0 \ �\ / /�/ 1 i ch � ft. \,� o �r't=ors NOTES: -- \ \ RaR�T N \ � 1. THIS PROJECT IS NOT LOCATED WITHIN FLOODPLAIN LIMITS, BASED ON FEMA MAP W t ( I r"1 -..:..::.�..,.. RG N / �fli (. _ . , , ka ,,y,r 10102 t8� NUMBER 510�3C0407D & 51003C�426D ADOPTED FEBRUARY 4 2005. o W \ ;G '+f /' 2 S�' IY 'Z I� V .7t - , 4 �A F `4' Qn.s \ . - - 7�• K �. m' ,� ya, P r is \ /J / , _ Q, i • " 'k" • = 5r.. rr' .mr ',.T f < 1 F '��•`a S i, �`t \ .. .. /"'� . .' . '•� r r ; �, / O- in 25' ftOW Y•� 1 �S 1 \ t \ �1 -- ,.i 1;�y 3 , L , N ',6 1+ !� / y ^_ rs ��A/^ \ i1�i� _ 19,a a ?% "� - 1_ y,, (. \ _ 3 r 2. TOPOGRAPHY & BOUNDARY INFORMATION PROVIDED BY ROUDABUSH GALE & / I 1 w f . 9• +1y1 W iai$icR ' ix ar E FYzT3fiEE' Y --... a 7 f %Nc t7 4r i e V) jk� ! i I & ? J % V \ ,a noraxf JOB N 0. ..:..._:•• . E�w'E'Ercc3sEH�"" 1 T... ,. _ ' ._ (J .. : E .. NQtaE7,.`_bw°dmaYt1gs-� . -25• l /a• Evertcr+EQa `1 tel+•a ''S5"nGf-�' -...'".•-> EX. ROW \ ,. _ aa-EYEtiORFEN > , �1 ,90. ASSOCIIATES THE TOPOGRAPHY HAS BEEN FIELD VERIFIED IN DUNE, 2014 _. ) . .,; . )' ' .: \ . `\ �, .� 'Ramer ` 1 7 ~ r - �- �, < B E DRIVE ` / 3. MANAGED STEEP SLOPES EXIST AS SHOWN ON THE PROPERTY. 25' ROW D.B. 317-552 18 1 J' 0�2�Y�J� E�CISTING MANAGED \�. Y crr�rp r ! \\ 4. NO WPO STREAM BUFFER ON THE SUBJECT PROPERTY. SCALE •� / // T— — mac— —\ — -� — ---i — — _\ \ \ -` \ 1- 'C- T �,� \.,\—'\ '` 1 l 1! 5 O' x PHONE � F-XISTINP GRAVEL D�IVEWAYAND /� S EEP/SLOPES TO BE �—j � P, gL� 16B � 17` 5. THIS PROPERTY IS NOT LOCATED WITHIN A DAM INUNDATION ZONE. jM SHEET N0. I PED ACCESS TO PARCELS 90-35F, 91-1'6B, 1 MPACTEC�(TYP.) / / 1 i iN/F,BERRY, t { l� i Y 4 AND 91-16 D. 402 P.F 38q ( ff o tj z a � w �w �7 �0 �z Y w V) �z a J 00 U a Q x U N 0 o U U •� NOTES: 1. CONTRACTOR SHALL VERIFY ALL TIE-IN ROAD CONNECTIONS FOR AVINITY ESTATES ROADS TO ANY ROADiH EXISTING OR UNDER CONSTRUCTION. CONTRACTOR IS RESPONSIBLE FOR NOTIFYING THE ENGINEER OF ANYQ� ��%l� DISCREPANCIES BETWEEN THE EXISTING ROADS AND/OR CURB AND GUTTER AND THE PROPOSED ROADS, �- {?, �IJP 1 ( CURB & GUTTER. CONTRACTOR SHALL CONTACT ENGINEER TO INSPECT CURB AND ROADWAY TIE-INS TO EXISTING ROADS, PRIOR TO ANY CONCRETE OR PAVEMENT BEING PLACED. ■ w-- w� 1T � ~ \ % / �4/ ' / // SCO T R. COLLINS % I I 2, CONTRACTOR SHALL VERIFY CURB ELEVATIONS ADJACENT TO THE SANITARY SEWER MANHOLES TO ENSURE - ` W w �'�`� " / /o. THAT MANHOLE TOPS ARE CONSISTENT WITH THE ADJACENT PROPOSED CURB ELEVATIONS. i A SHALL PROVIDE ENGINEER SURVEY WORKSHEETS OF ROADWAYS PARKING LOTS ALLEYS, _ `'�-�. �- � ` � �- w.� W �'^ „ ``- --. � .- ,I � l l / ,° / �o� 3. CONTRACTOR \�- / I MANHOLE TOPS AND DRAINAGE STRUCTURES PRIOR TO INSTALLATION OF CURBING DRAINAGE OR UTILITIES W \° EXTEND 10 WIDE TURN LANE / s TO COLLINS ENGINEERING FOR REVIEW AND APPROVAL PRIOR TO CONSTRUCTION. COLLINS ENGINEERING ■ L"`= �- _ w`` 0�+ \ u (' l ■ - 1/ / r1 / / AT 2/o ROM EXISTING GRADE SHALL VERIFY ALL SURVEY SHEETS TO ENSURE POSITIVE DRAINAGE AND PROPER ELEVATIONS FOR \\ w� w=- w" \ ' ' ``--�_ \ ` L I-_ / TIE GRADE IN WITHIN EX. ROW / CONSTRUCTION. w �. �,W ` % w 4. ALL PROPOSED SANITARY AND WATFRI_INF FASFMFNTS SHAI I RF InFF)ICATFn TO ACgA FnR P+ +Ri ir, iqF / % SWM FOREST AND OPEN SPACE PRESERVATION 7 J: w 54 1-0 S ION - LOT ' f' % j ``'" / } } / / REPLACE EXISTING 48RCULVERT \ ��wv z g 5S 1 J / / _ - / / -'f WITH 28 LF 48 RCP CULVERT .� yy , ��: l_ / / / / // / z "' u f _~ /- ~- -- '� / .__'1� !� / / k< _"�`_ I(1 "._.. �-.0 l i l ; 3 i / l 1 // / '., . S • )x� / / / / / // / U V `ram 1 /! 1 / / / �1 ` - 7= - r I l l / / ) 1 ( ` / r! f / `f ' V ~ Z Lu /e / (�(') O PROPO i'�AVED PQRTyION / z J a /l, ` /, /J r �✓'I Fs ,r ( l I" T% f3� _�,w I '' i // - ` f�� �\ �% EMER�ErNCY/A�.CESS;RQAD H Lu w -� f f o z } z o >~.-` -i '! ~'' 7 / 'tip / i'/ -'' J / % " •-7 _ \�/ / "- �---_ W - w 7 W _/""' ', i- % % / i' --' , _ I-1 W uj �-�`w N 51r- / / �1Ii/ �!•' mow_ i - / W / �J _ ``� 1u '' / %`r��� / / -�~ --�` 1 x W ~� w K. 1-" Lmu PROPOSE AVED PORTION > -- W E G w ACC 7-E,(vl R EN Y • €S�I�OAD - -�,-='--.-= ti �`- - rrr,'• J ' e -; y % i r ,1T i % . : - _ w� W 1 / L _ce i t - - - I 1 \ F t L _\ 7 � 1 T . C R r _, . / � �•.`�Z, � ^__ . f r ACC � � ll 1 .w - _ w _ . ( .< w C \ ti aIV--... , . EXISTING MANA ED :77777777_ STEEP SLOPES - (PROPOSED l 11 \ Y ! r FA ILITY r FOR , PR - OIPOSED GRAVE -PORTION-- J AVINITY ESTATES --- -- ---- ---_ (_.-- ----- ---- '' - EMEIRGE-N- CYACCESS kQAD_ - P) 6,SEGMENTED +RETAININWALL Ww.- -- ` -- - r�r r �O - P 6 SEGMENT D-- > �,< ,` ET WALL - O 1. �'� i &IIN _ . EX SWM FACILITY -- _ N � r \ R ING z f" 170 �� ' , TE i NOTE: THE EXISTING MANAGED CRITICAL SLOPES- AVINITY� I r<~ , 1 � - v \� ;.-IN-THIS-AREA. / ,:: , , .:...;, � i , . ., -� . < ,. ,: , • ,;,,: , , . _, .,, , .:, -_ � THAT ARE PROPOSED TO BE _ Lu DISTURBED SHALL BE RADED IN A G RDAN E ,. . l r / ui WITH THE RECENTLY APPRQVED STEEP SLOPES �. _ v _ • rho _ r _ � �_t(...,.....,. . '� r 'v y:- . � f .r: - - .-- �R.�ETAI p._ _ �...._._:. :. ,.,:,� ; --- ,. •;�;,. _y�4_R : _ _.ORDINANCE ORDINAN E. - - _ w � f �P} VAR.WIDTHPRIVATESTOR WATER MANAGEMENT N _ a ACCESS AND MAINTENANCE- ■ r ' SINA EASEMENT _ NLu- -4 x:: N FILTE RA BI OSCAPE VAULT - r L r , a WIDE CURB YD C R CUT WIT8 LONG FLANKING Q t E _, . �_ ,-_--� -� :. �- � C� S WALKTRANSITIONS'QN EITHER � ,-- _ _ � �. �,' ;, H R SIDE FOR EASY - o 1 !- �:- • _ ,- hI PEDESTRIAN T A - - , ,/ ,� + R NSITION. C RB OPENING TO ALLOW THE FIRS' FL W vl -� -t� '- , r � ' -- •� � 'H U H TO DRAIN TO THE uj -OFFLI NE FILTERRA BI SCAPE VAULT. ST PROPOSED _ J SHALL SE o RVE AS THE BYPASS INLET FOR LARGER --� _ ,- - - ✓ v a ST _ RMS: EE SWM PL ! ; A FORADDITIO AL DETAILS 1 �. / -- �' - - - - , / Q ,7�1I 1 W 1 r t 1 - I A , 5yy :r , 4 _ , _ . /-� _ GA - `- - t /- - s. 8. PCL v L 1 r _ - r� v L I f Il T <C 1 _ v �8,A\ - , „ 86 c j 527 - =52 ,3 % t ,IFFE 529.5,0 t _ ,-_ ' - 5 �_ _ 5 L .v 2 L c E- Lai 5 fiT \ T F' 0 i -_ 1 � i E= .3 li � - / 5� 1 � W > it 2^ - 3� `�\ _ Q 6 , I ! �F+ 3 � � C.� �., o GA a , / Lor , E YD L F77- 3 r LO _ 1 FED 10:,, / F ff GAR-- 530 5 7 +' `j�'`-` { t o -- - �� -5� 6 j - - 1 / 7 , fi W 9 ° I '.17 63 ! 1r �i�F32.�r - L � ' '""�.�.. � I'_' r� z l i 7 52�=a3 o OT 59 \ \ `� -_•. / _ CE J EXIST]NGIMANAGE4 28B YD 5 9.33 7r.`7 7.; / 1 '"GAR=531.67 _ -}'''\. FFE1 \ w z j / E + - w TE P SLOPES 1 , Jt I LOr -��,' �. ( \ ( \ ' 1 z / FFE=6= 101 r 3 BAR= i . •-.. / W 531. 3 r c� r � i�� / •` - --' J �,j f-- >-- ' _GAR__=5zg 8 f T 531.33 53 �� I \ I \ r ' clo w f 9.5- ��----- ' _ `n / LO�3 J / � � � � 7� : 52 p �r� 8BYDt' fr�� FFE'_533.33" �� + . Q, o,+ 1 1 � v, 1 , } /- F z F;'S3?.7 - , N - '� '� I 533 00 -'_�5 -� ` 1 +' _ _ R= �-1- ( J GA / GAR= 5 ;�/ � 7. t � �� �, ^10 - I I ~ � � � I 1 33 ; , + Z.1- ( _ - LOT , \ W z 5�1.3' 9 o (�. ' ��. -. ,GAR=531. _ 532.67 > 53 F., FF ; 58 ( W � � - E 533.6 7 1 � l ( .\ '`• � 1 � o LCOt 65 a' � 1 _ GAR- ` _ 530. I i 5 4:67` _ �\ 533.33i 333.3' �` Ij / /` _ - a3 - f I GAR534.33- j I ! } _ J I �) 4 SEGMENT ED - / - ! _ r' t "�` _-•- -- f Or - --u• _ (� �� I \ // Q CI 1 tL u TAININ WALL LOT4 / „� 1__ 533.5 _ 9 �� I 1 1 1 / �/ L / r.. FFE-533 �`/ ;_ GAy-532. p534.pp 53 4 - b 7`0 "..--.~ C7 1 FY4 `\ \ ' / / n i 7 -- 1 J -LOT 66 FFE=536.67.. __ 3 r 1 534.67r LOT 5T N J71. f 532.17 8C YD GA t :. FF ; 53 / 28C YD I--- / / / , / %' _ ( j R 536 33 -4 1 , GA� 5.00 LL.� - / X -- I i LOTS$ fll r � _ _.. R=534.67 � r / j r ;� / f 7 > t 532.' f 1 - 536 p �/ / q, . - _ '.' 8.3 � I 11 k. T5� - I LY. ~- Q - \ 1'FLOT sT f' _. 535.33 FFEzS �{ A / 537.33 \..J - - / v) 7 L_..OT 9T ^� w / a L _GAR�537. 4 _ - z FF 56 ,""`' t- ° _ GAR p / I 5 . _ ! -� + ti �2� �,a. E539.67 1 1 1 i i /"`-"-�. w l r j 537.17 T 68 l FF =s�1: 7 = - v-�-, � 5 ;g �9.33 I� GAR-539. C' R,-P1-tIC SCAL/E / z II r T \ o 40B YD 1 a 33 ! j LOT 6 40A YD > r / -- ---_ GAR-541 11 v} FFE / I 1 ^ t - J _ 30 0 15 30 / 60 120 O JJJ f /-541:3/3 T _1 �( ` I #Mz540.50 LOT 9633 ' �> ` r ` 1 ]oa No. l _1 GAR= r 1-��AR`-539.5t} j 541 pp S 3 J + ,, \ i r092033 j I 541. 9r _ 1 - y c 00 9 4�� 5 9, i 539. 1 Ffi��54 - '} `'. LO j ` SCALE o / 17 3C Y[� 3 6 7 T 5 / / ++ FFE=z y `H YD l ( IN FEET II ` rrr =54z.5o 1 1 `L07�g5 t 1 s $q� 54z.00 GARaS 33 l ir�cr> 30 ft. ' 1 30 / / 1 GAR g541.50 \ 543.0 54 . 00 f MATCH 2 - SEE NEXT S EET j ` ( SHEEP NO. l ■■I�■■.� ■�■■�■�__� ;Lor �1 __. Lo 1 ° o- N I 1 \ I I / N '' Ia F F= i o' 4:�°7,::541.77 - i__. i �lFfi�=535`F7:::.__ _. l ! _ l ( ) 1 I 3 ! L Q � f Q� Ni +, I O C� O" N � C O +� L APPROVED PRE -DEVELOPMENT SCALE 1"=100' F $ _ - i� '� _ - v �'`y v ' �` FyC N "T TE1T1T' • 4 .. I .. l _ �� \ v -- - -__ NOF Fi r ,n - \ 5 �� A _ - , �.-- ; , \,��n ` : - I�s \ I ` \ \ I � � �; 1,_ �// �"' � �,. - �/\ • _ �. \ RF'I?t3VED�#VIl! TY I, - �.. \ ��a \.' \ 'Sr i r� r \ * \ '-PHASE I WET POND _ _ 1 / _ - ,`'': `^ `'`% ', s so !. f - \, � `�\\ ` \ (WP^04x�+-300044) } r \ __ / l \ r 4 J _ {yy \ \ 4 �-i \ , /f \ ,�qyy 1 \ Y I 1 _ > , is , -�`-' / - r \ s \ \ \ \ • l ,s. • \ C l , 1 n i'_ ,may, ����- r w G \ O \ r1 APPROVED ALT .aah \ � \ G 1 s F`, \ 1 _ s 1 t iao'OFOLFw AELLY c�.2 hr `\ � I / / J 3R 9 } \ { _ � I pp I \ Yt , l •. � \ \ \ s \ APR ED.DAA I � :. F CON(., FLOW w .!ELEV- c-o.. hrs- (� \ ' J J - t s7s s � r :.a c: c \ tt \ \ r,. 1,.ti \ \ \ r` d I \ � 1 d j( 7 1` 1 1 'I 1 _ \ \ 1 � 'a r _ -. } I 1 ., 1-1 ( r I� , I 1 I i 1 \ I ! J r / / pan \ \, 11,1 \ ! I 1 j J I.. \ \ \ l��i ` - 1 ` \ , / ' > r 1 I \ \ \, `It I L` / �.__ , /' f l t '1 I / \ r I o. \ i �; / 1 \ \11\ f+1 _ \ -- / \ f 1 \ \ '' !! \ y r ' - - - - \ APPROVED DA C 1 1! 11 \ 1 +�I I } }� \� ` i ' ,r- , I a.a3�.;�Nm6a•Tc�o.25h('. y ( 1 ) } -,I I I J� `1 ( \ S ` I E J rr �' l / -5 I _ 1 1 \ ( 1 1 I 4 -. � I I 1 , / ♦ 1 I I I f 1 r A� a >_ r I \ ' PR VEO70T _Tr-o.a I ti+' A } I i- 5 r � I� - i I I �- I. I , P AP Vf D A'B I �O I ✓L� 0 I 2w''OF LF, ELEVxn' o<o 4� 2� hrs. ,.- r 1 (r } � I r � ''. 4 l FAPPR APPROVED r --�- - r � LOCATION Q O [---- / _- J I I \ , 1/ 4. 13.g8ac.,Ef+J�.•6x;-I�crw.i5 - o'OFCONC.FL'ONw(GELEV=s'.c=o:oihrs. / I i' = 5°-i_ s" �' t } / I i I /I I & APif ND D S M \ , / I \ E r i - / ( I I PR E9 T 7AL h i AP V T - a I O c o Ms. - S _ \ � I F LITY I tea. 11 \ A _ I , _ �'r ao' F LF� " EY- c-a.a h s, - / I 5 O O w' ki. t J fT } i I / 7' 3 a ':r t n �- - r I r, t I :9 •i / l 7' - i o' F : FL W w h ELEY_ .. a hrs. ` !� _.-- � - -_. _ ' -• � --` f - / _...... o ,- -.\ p CON( O 5 c � U _ r 14 i , 4 (T ) / \ APPROV DPRE-DEYELJPMEN7RUNOFFFLOVJIN. > - I , _ `f 55U"~OFF5ITEISREDIRECTED'�APPROVED&AMENOEp __1 / I \ /' _ ' i i ` 1 �.�-' i 4 PLAN TO RCCEISIE7i2EATRhENTOt1517E_� '° / /' % �_ �t" t S j _ _. f / / 1 _A - - - / \ \ -'\ - ' // _ -, \\ „'�,- - - - - _ "-- , / /, r / // / III\, _ _ r ii r � 1 j , - - - - Kau - - 5, ! / 1 \ \\ - --- .-� hay---_` --` � := / ---- - / '---- -• II r l j % l / ' A i =.. __ I- i - -- y / �: 1 I �-, I r-, - r I 1 / , / / ll;? l ) �, �\ - . THE SWM FOREST AND OPEN SPACE EASEMENT IS S BJEC TO 1 � ( \ r1 -` - _�- .---. nU� r - ��- '� '" '`''� 1 ^ .:. - _ -�--GUIDANCE SET FORTH BY DEQ IN THE VIRGINIA STORMWA I ER I j � ( `• `' 11 --'-- \ , I/ ." \ --' -- _ ;'! / ' MANAGEMENT PROGRAM. THE AREAS WILL REMAIN UNDISTURBED i � j 1 1 -- % '%/� 4 0 _= ) - , / , 1N A NATURAL VEGETATED STATE EXCEPT FOR ACTIVITIES AS ( \ / \ __ / /� ' - / _ ;APPROVED BY THE LOCAL PROGRAM AUTHORITY SUCH AS J J I I _--- % V, - ,2G - - .1 / / /- `\ __ 5-7 --\-; .,FOREST MANAGEMENT, CONTROL OF INVASIVE SPECIES, 14 1 NI '\ _ `' - \--`--- .' ; % ,' / " ^^•,%, ` j / // \ j;-,, `REPLANTING AND REVEGETATING, PASSIVE RECREATION (E.G., ,FII 1 \\ _- 1 i ,,:TRAILS), AND LIMITED BUSH HOGGING TO MAINTAIN DESIRED / 1 yy \ 11 _ _ ,•�� / ` ! VEGETATIVE COMMUNITY BUT NO MORE THAN FOUR TIMES A 1 ( ( r \ , \ 4 I I I j'r / j1 _ I - h / _ YEAR _ _ - - _ :( ) i I'll \ \ - - _ - ~`�--___ __ _--`~ - - - 111 l-'\ \ - ` K, l `' (1 OTE: ANY FOREST & OPEN SPACE PRESERVATION AREA THAT Ill ( I _ _ ^_-- _ _ - i \ ' \ \ WAS PREVIOUSLY DISTURBED B E O S CONSTRUCTION OF THE / f II -- rY THE C N TR N E r I _ 1 �-~ � _•` : J i- - -fr r / jj , � ' \ _ IY-- "r r ` ,1` ( S'\\ Y /E 1 5 - - - -- - - 1 , "\ AVINITY I POND (OR DISTURBED WITH THIS CONSTRUCTION SHALL J - , - - _~'� U° r ` - �' " �', 4\:"'. BE RESTORED USING DE BMP SPEC. SOIL AMENDMENTS. /'/ ! \ _- �_ r - - - °i th ; - _ 5 ` '\ \ . \\,`-" Q 4, // ( I i I \ - - `� ` % / - _ - - \ _.t r \ /E 4 4 _ _ _ r / I J y �_ , I , _ -, _ 1 ,.._ r. - - - - - _ r - ��_ - G - _ I < w 4 - N J _ _� - - - - _ _ - / - E' 1 \ ♦: _ \ _ = -�� - ___ - r - -'1 -- _41 _. \ \ r-" I -" �•+•"~ �4:_.. . '___ .....-_ .sae _ 1 - t -� _- - ---, " _ ' - - - , _�- �„ +r _-__ '-t __ __ %g{�' '--tea - _ �"_�" - - 4_ N -�_ '" / J/ ._�- -_ .�--A JU __ '� - -- ____ _, - l,. _ - _ _ --� 1 - _ - - _ - '/N_ I I i- -- :�. _ - _ rry --- - - -- _ \ /--- , LOCATIONrOF PROPOSED ^�- -- ._ / ' -- ~ - / PLUNGE POOL OUTLET --`', -` ' -~ , �� i APPROVED Pre -Development Watersheds COINCIDES WITH APPROVED/ ,` CN Tc, hrs. Area, ac. 1-yr. Flaw, cfs 2-yr. Flow, cfs 10 yr. Flow, cfs DA A 62 0.22 5.18 3.04 3.74 10.69 POINT OFANALYSIS- _ � 'J ' \ 1. ` . '�'`, _-- - . - r �� DA'B' 61 0.15 3.48 2.21 2.71 8.06 _ ~ - -- A,o _ _ ,*\\\ DA 'C' 61 0.15 1.13 0.72 0.88 2.62 __ _r 11 - _ _ :�. - ��y�' Total= 9.79 5.97 733 21.37 515 515 -T- - - 510 EXIc1 TING GRADE 510 PROPOSED ESC 048" CL. III RCP STANDPIPE TO SEI __ RISER. CONTRACTOR SHALL REMOVE UPPER POR --- -- ----------- _- -_-- - - 48" STANDPIPE & INSTALL A NEW 3' TALL VDOT MI 505 J_ CONE. CONTRACTOR TO INSTALL A TRASHRACK It THE FRAME & COVER FORTHE 24" OPENING. TOP, _ -24" RISER TO HAVE AN ELEV= 495.33'• CONTRACT( PLUG ESC DEWATERING ORIFICES WATERTIGHT & NEW 5" LOW -FLOW ORIFICE AT ELEV.=489.00' AND -_ _--__ _._ --- _-._ _-____-- _._ --.-MID-FLOW ORIFICES A) T ELEV.=I493.50' PR POSED 1P' WIDE TOP OF DAM 500 ELE1. = 497.5 500 I p PROPOSED-RIPR�AP ENER 'f - - 1- ISSIPATER PRE-TREATMENT. SEE WIPE GRASP LINED FINAL ROAD PLANT FOR STORM 55' 495 SEWOUTFAL - DESIGN ---- --- -- EMER ELEV933�� '[ EN Y SPILLWAY CREST -- ---- E 495 EXISTING NATERLI CONTRACTOR SHILL INSTA LL EIVgqBANKME,NT IN I I I- -. - -- ACCORDANCE SHOWN W/THE ON --THE DESI EPLAN N .--- - ---- �,c -- - --- ------- ------- PROPOSED ESC 018" BARRI SHALL BE CONVERTED TO 1 490 1 HYDRAULIC EQUIVALENT C o- 1. 1. A 012" BARREL. TO ACCOM CONTRACTOR SHALL INST) WEIR PLATE AT THE PIPE 01 BO OM TT OF BAST COVERING THE TOP 10" OF T- - ----- - ---- - -- --- - ELEV.=Q Q.00. - - --- PROPOSED ES 018" CL. 485 TO PREVENT FLOTATI9N THE RISER BAS III R P BARRE (L=88'; 485 A D BARR L CONN _ CTION SHALL BE - S-o. 5 96 INV I , - - 88. 4 44 FIR LY EMBI= )DED�O AN THIC I V OUT=4 8.00 PROPO�EIYVt50T GGREGATE 43 COARS OUTLET PROTECfIPN CONCRETE OUNDA ION THA IS 8'x8'. EX. 10SANITRY w/ GEO EXTILE FILTER FABRI 482482 SEWERPIP NDERLAY ENT &V OTSTD. 1 } (L=4.5', W1=2% W2=8', D=2' MI .) W W- n O-) 0) W W `r 6 a. CD C] 02 LO M `-) CCCO d- Or W LL 10+00 10+50 11 +00 11 +50 12+00 12+5012+75 BASIN W I AMENDED Impervious Area Summary- Water QUALITY (Areas Located within Parcel's Limits) Proposed Roads 69,950 sf Proposed Driveways 29,750 sf Proposed Buildings 135,500 sf Proposed Sidewalks 21,200 sf WE AS THE _ION OIFTHE I-i UPPER I PLACE OF )F CONE/ Q SHALL INSTAILL A THREE 6" :L OUTLET IAVE A PENING OF LISH THIS ILL A STEEL 1TFALIL FHE PIPE. 256,400 si PROPOSPD 010" MDPE ST TOP TO PERVE A� RISER�TRUCTURE NDPIPE i(VITH GR/ & T TE INLE SHRACK, 505 RIME EV.=495.�2. CONTRACTOR O INST L ONE 505 04.8 "LOW-FtOW-ORIFICE RASHRACK. AT BASE OF F AT E4911.00 ISER, C NTRACTgR w/ SHAL INSTALL A 8" ELBC(W FOR Tr E BARRFL INST LATION ELBOVILTQ_BE-SE. IN -CONCRETE-__ FOUN ATION. PROPOSED 4' WI E TOP rj OF DAM ELEV. = 96 -, o n 50' WID GRASS LINED EMERGPNCY SPI LWAY CREST _______ ----_ --_. _T ELEV_ 4 7.92 495 495 _ - P) SA ITARY SE> VER BYO HERS 490 - BOTTOM OF 1 - _ - 490 _ _ ELEV.=4 1.00' TO PREVENT FLLO THE RIS BASE AIAD E B L O BARR ) SHALL CONNFtS- E FIRMLY I EMBEDDED E-.-- _-- _ ___- --- � T ----_ 6" INTO AN 181' THICK C NCRETE PROPOSEP RIP ENERGY' 485 FOuNDATI NTHATIS3x3. ,I p ISSIPAT I STD R OUTF � L VDOT I A1 485 010, INV -- DPE PIP N:491.0 U RIPRA DERLA - -ECA-CL WIGEOF�ABRIC MENT L=28'• W1=7- 482 W _1' -11 D 1 4 482 INV UT.490. r r > > L=80'; S=0.50% J J 1 . cD �? W W W O ►O d- LLj_ PROFILE SCALES: 1 "=5- (V) V=50- (H) 10+00 10+50 11 +00 11 +5011 +75 APPROVED Post -Development Watersheds AMENDED POST -DEVELOPMENT SCALE 1"=100' i r - \ n I I. 4 % - �' , - . t _ _ 1 - _ 9t 'n. t`, ,rf` ~ / I , --.� - _ ./ \, /�14,_1 \ _ s� f \ 1 f , 1 - I I IF j _ I i I -. 4 � \ -, 1 - \ i \ , _ _ , , ti _ t - \ t. \' V x 1 f �` f• j ■ t \ k S .1� .�.' B�A7E a'�- 1 a, 1 Nt / /' 1 fr' 1 1 � l t j7+ I f fe i , �,� t `� D S FOREST `� x 1 ( .i ROPOS W r t� �_ r J w a. J Cv t � I.•.r~ , EN SPACE M i &Q J ♦ E y 4 _ _,. s , , \ PR,ESER�ATI N ESMT. APPROVED TOTALTa o.22 hrs. 't..♦ p - ' ` �lV t PP I ioo'OFOLFw1AELEV-5'(Tc-o.�5hrs.) i I I \� t \ * {I ,t i l r" \ WITH TH S Afv1ENDMENT 225.OF, ONC. FLOW wJOELEV=9'(Tc=o.o2 hrs.) _ `'+, ■1. IN * t .i�}'. �:.:;.. \ I 975'OFC14ANNELFLOWJ�I8 (Tc�.o3hrs.) I /) ��.: )i�: ,.J r - �v `\ �,�• /r F.. � \ '` 4 � t D \ ,.r'.# 1;3', MIANUFACTURE _ }• - _ _ - -- --- rCl_-"_�.--�` � t'* -_��. ' -- ,� ,-I fj: r� I \AMP SUBAREA ;" I \ l �`\ -� " r.r-- I r \: l} c; 5 {j \ (o%, ac. It�rIP. & o.z3 l \' * j 11 ', i .1 - _ - - .� 1 ':1.- -t �� :\)c: JANAGEDTURF)t, I F_L/_1 1 1 \ I 1 \ , I I 4 - - I �I r' 4 I � � I I I 1 \ t /- s r I 1 �\ l ,„Y � , .,.. • :," _ , .. :. �;' \ � A ENDED DETENTION BA51 , I / / _- Nx�Ynoni w I } C E LA E APPROVED / r I TOR C t , P a / .- r' J 1 I \ 1 I 5 >u �• � l ,r =r ( � V= / k BA I, ',� �= I RE`TENTI N S O f a Q / 1 I , i s / s• 1pJ� l , l f __' _ I - -r ♦ ' l \ __ I / ii: I" i / t i � r / - - /i /( / / 1 "�, 1 - ---- _ AMENDED DA'� / 4 / ',� --. -_. - - / / r / I I 1 I I \ #'' - 4u- ... Y ., ` _ � �. , ' R POSE,D A� E�'A PR�VED I (1.84 ac.; CN=go.o; / ; _ -� 5 AMIEND D DA'A' -' - - 7 p i / , 1 \` ,\ �. \ _ _ /. # a - - _ /, - _Y - /, / i, MANUFAC�TI�RE�BMP�FILITERRP r� \\ \ _ Tc=o:f hrs.) %'l, I / a* (7 95 ac.; CN-$o.5; -- - la - - - 1- - , // BIOSIC�ff VAULl). Byrj J __ - r /, / Tc-o.2� hrs.) / % / �I APPRQVED VORA a98f (l. I � y _� _ - - - � l '~ � -�' �/ �% / S9H R US REM0�J4�. RAT�I� r1 { I - ' �,i' J__,' %� / [. /';. -'J , --- 5 ( /. I / 9f I f % i l j _ 4 i1 --- / i F - ---- - - - _ -- _ . / _ / I I I I \ ti\ _ /lx 5 - ____ - _ __ f I 1 \ , - i � z _ 1 \ _ I \ _ ! 1 _i I 1 y►+ r � I i F- d 7 u L 6F _ - 1 _ PROPOSED PLUNGE P L-AT O T T _. QO - i{ f 4 `STORM SEWER: PLUNGE P OLTO- a ' # 1 f 41' ... _ - -� - -.--__ _..�_ r i 1 l 11 I I \ S� _ ,,I 1; __ DISSIPATE FL`OWSTO ENSURE.- ' \ I / / \ - - - i �, , ,` -- / \E --I tI11 I f - -_ DOWNSTREAM AREA ARE NOT ER DED, � � E �... - _- _.__ - -- - .5 - - r ,r / ,, # _ - r , __- ' IPA I 11 / - (� /, , I I I 1 \ - -_-._. - _ _ - . .� ( _ - QUANTITY v Water UANTI A Summary- at Impervious Area Su a _ ~-,� r AMENDED Im e Q L ry I p 52,510 sf - J_._. -- - _ _ " __ = Z - ,- - - �[ , /Areas Located within DA A ,_ �-,,. )" \ } S \ a __ a - «,- . / r \, \ 4 Proposed Roads _� \ -- // -_ J \ - ---,.-_ - �j_� -. _.._.., �.� "```�. % \ �� „ „-„-„-„ „ „�_ i' Pro ased Driveways 23,125 sf - ~ ---- - --_ -- - - -- - ~ _- - -_ ` --I - J _ - _ \ / s 1 5 sf -"-� . -_ - _ = _ - i Proposed Buildings -' -- =. a--. ' � � - 95 87 _ µ --� ,- - j _ 4_-- - ;r \ - - -�- Y _ - ,_ _ -~a - - - _ - \ __:z -� ^ Fr: - _ _ _ Proposed Sidewalks 16,640 sf _.._ �'- t'3� % , ` - 188,150 sf = - - -- - - ''/ -' _-._. = _ _r = __ -`!/ ��~�~ '_: f - --- _ AMENDED Impervious Area Summary- Water QUANTITY ,� _. ( �` / (Areas Located within DA B`) =� ar- N r;' ----- __ - _ _ , `� / - / % �` - - _ - - - - -- --- Proposed Roads 16,450 sf ` ,`� ' ` _ 6,625 sf \\ ,,� i --eau Proposed Driveways - PROPOSED SWM FOREST - _-- \ �- & OPEN SPACE �. `\ Proposed Buildings 35,175 sf -_-_ - PRESERVATION ESMT. � " � \ ` �`._ - - `Pro used Sidewalks 4,560 sf \ `\ - P ` --__ - - WITH THIS AMENDMENT -_-�IN, � \ \ 62,810 sf CN Tc, hrs. Area, ac. 1-yr. Flow, cfs 2-yr. Flow, cfs 10-yr. Flow, cfs DA 'A' 83 0.15 4.94 1.25 2.62 14.89 DA ' B' 79 0.21 4.85 1.11 1.52 6.35 Total= 9.79 2.36 4.14 21.24 AMENDED Post -Development Watersheds CN Tc, hrs. Area, ac. 1-yr. Flow, cfs 2-yr. Flow, cfs 10-yr. Flaw, cfs DA 'A' 80.5 0.21 7.95 1.04 2.09 8.50 DA ' B' 90.0 0.10 1.84 1.10 2.69 4.42 Total= 9.79 2.14 4.78 12.92 STORMWATER MANAGEMENT NARRATIVE: OVERVIEW: THE PROPOSED PLAN PROVIDES STORMWATER TREATMENT FORTHE DEVELOPMENT OF AVINITY ESTATES. THE PROPOSED PLAN COMPLIES WITH PART IIB REQUIREMENTS. STORMWATER QUANTITY: THE PROPOSED PLAN INCLUDES A DRY DETENTION BASIN, WHICH ATTENUATES & DECREASES OUTFLOWS FOR THE MAJORITY OF THE DEVELOPMENT. THIS SWM FACILITY TREATS SUBAREA W. THE PROPOSED PLAN ALSO INCLUDES A PLUNGE POOL ATTHE OUTLET OF SUBAREA'B's STORM SEWER. THE PLUNGE POOL DISSIPATES THE RUNOFF PRIOR TO IT EXITING THE PARCEL, AND PROVIDES MINOR ATTENUATION. THIS AMENDMENT PLAN AND THE ATTACHED CALCULATIONS SHOW THE PROPOSED MODIFICATIONS RESULT IN POST -DEVELOPMENT AMENDMENT FLOWS LESSTHAN OIR EQUAL TOTHE PREVIOUSLY APROVED POST -DEVELOPMENT 2-, 2-AND zo-YEAR FLOWS. THE EXCEPTION IS DRAINAGE AREAT, WHICH HAS A 2-YEAR STORM FLOW WHICH EXCEEDS THE APPROVED POST -DEVELOPMENT FLOW, HOWEVER IT REMAINS LESS THAN 'THE APPROVED PRE -DEVELOPMENT FLOW, PROVIDING CHANNEL AND FLOOD PROTECTION COMPLIANCE. ADDITIONALLY, COUNTY ENGINEERING PREVIOUSLY EVALUATED AND APPROVED THE CHANNEL AND FLOOD PROTECTION CALCULATIONS WITH THE ORIGINALLY APPROVED WPO PLAN, SO THIS AMENDMENT's REDUCED FLOWS ENSURE THE AMENDMENT IS STILL IN COMPLIANCE WITH COUNTY AND STATE MINIMUM REQUIREMENTS. AS A RESULT, NO (FURTHER ANALYSES ARE REQUIRED FOR QUANTITY COMPLIANCE. PLEASE SEE THE ATTACHED CALCULATIONS PACKET FOR THE AMENDMENT's CHANGES. STORMWATER QUALITY: ESTORMWATERQUALITYTREA-rMENTFORTHISDEVELOPMEN T S PROVIDED THE I PR IDEDVIATHREE BEST MANAGEMENT PRACTICES. THE BEST MANAGEMENT PRACTICE OF PROTECTING FOREST & OPEN SPACES FROM DISTURBANCES IS UTILIZED. A PROPOSED SWM FOREST & OPEN SPACE EASEMENT WILL BE RECORDED WITH THIS DEVELOPMENT's SUBDIVISION PLAT, SECONDLY, A MANUFACTURED BMP IS PROPOSED. AN OFFLINE FILTERRA BIOSCAPE VAULT IS PROPOSED NEAR THE CLUBHOUSE PROVIDING A So%PHOSPHOROUS REMOVAL RATE. AFTERTHE USE OF THESE TWO BMPs A FINAL PHOSPHOROUS REMOVAL RATE OF 9.96 Ibs/yr. IS REQUIRED. THE BEST MANAGEMENT PRACTICE OF ]PURCHASING NUTRIENT CREDITS WILL BE IMPLEMENTED FOR THE REMAINING BALANCE, ACHIEVING COMPLIANCE WITH PART 1113 WATER QUALITY REQUIREMENTS. PLEASE SEETHE ATTACHED STORMWATER MANAGEMENT CALCULATIONS PACKET FOR ADDITIONAL DETAILS., Total Phosphorous Removal Required for the Development 10.62 Ibs/yr PLUNGE POOLS' Phosphorous Removal Achieved from the BMP Practice of the SWM Forest & Open Space Easements 0.12 Ibs/yr Phosphorous Removal Achieved through the Proposed Manufactured BMP 0.54 Ibs/yr Remaining Phosphorous Removal Required to be Purchased 9.96 Ibs/yr DETENTION BASIN A & -- bh ' ' ,- �' \t i �\ � Filterra Bioscape Vault Key Design Elevations J MANUFACTURED BMP DESIGN ` _ "`--' \+,=., _ \,'L.....�..I.. 1 Vault Rim= 525.50 } I , SCALE 1 - 30 --i - �L> .. ......... r , 1 \ x./\ ti, �:- = \ \L .;\ \ I \ } '- tk y j (Vault- UD A= 6 SDR 35 PVC Pipe \ \\ '\ \� tt''\�'�G-� /,` ; \ \?' �t \, ' /•'3. / \Vc\i\G\i� is I \ 1 I1 . .. .. .. 2a.08 ' I nve rt I n <�}, \mac- :\ ,III f�, - - (' l 1_ \ E 5 ( } , �N�� %C �'� r` ` ' - - - - -' la, I- � = � ..I 519.77 (Invert Out) `� - I y�l,K�G .\'`\C\ ,::'\r,K_ :.' I t tom, �,, t_._.. \... ...r „ .::.,., \'` \ v�v �'/\�3��*� ..Y., i / ( ] ,..+ ( ...r { UDA-UDB= 6 SDR 35 PVC Pipe `� \ ,\; -\ q�.. ( 1 l i 1�'1' � .. � II I za.oft 1 ` - _..\, , --r \ / } . �t .ti..j...... ... r 519.77' (Invert In} \ -\ \� ' ''+-1. (': } / � -.�J i. i ' i i 'I ..... \ :( j 495.50' (Invert Out} \l - ':i � Al,� I . 1 \ !. l .I} .} '.I. `' 1 i UD B - OUT = 6" SDR 35 PVC Pipe \ �� \ 1 _ *�- °1Iw I I ( ; \( .. i `1, 6.5 ft (Invert In l 1 3 . }. I : I \ 495.50 (In ) \ I - r E \ 495.00' (Invert Out) ,' �; � } 4 ,N ti 1 / / V .`.. 11. _ * t \... - -f I ' I k \ ._ 1 / 1. \ y � o w , \ 1 i r. �.. .I. �1 \-\�m�-A- ' \I I MERGENCYACCESS\, I ,. \, } I\ k 1 �� '., . r kiOAD SHALL PROVIDE \ �yI 1 °-) l }_ / t `I tk \ I I 1' ', }..� , . ' I . .., \SWM FACILITY \ `\.__\ ter •/ 1 \ 1 �� 1 i � 1,. \..1.... 1 I \ ;' \ MAINTENANCE &ACCESS \ \ \ \ I ` I } ( I \ \ ,, t..l... P� OPOSED\RIPRAP ENERGY 1 y E I � t' 1 +( DIS IPATERPRE-TREATMENT. \ I I , �' t t ) ' SEE FINAL ROAD PLANS FOR & I: ( }. ; I I �` + ;\ ..� ) . . `, .. i I . ,\ STORM SEWER O TFALL DESIGN I} I 1 I':1 a; l I i `\ I a� �I I� 1. + 1 `\, \ \ l --- \ I I I I�� 11�F..I. ' ...r \ � I 1 I I ! �. 1. I E \ \ \ }: \\ �1 I1 \ �t r \ l I\ �I u 1 1I 1 \ �. 1( :1 ,h I j I I \ I I I �\ ! 1 I (=..It I PROPOSED ion WIDE TUr \ \ 2' WIDE CURB CUT WITH I .� I I \ (��� } { �` �\. M i OF DAM ELEV: �,497.50' \ a I I i 11 LONG FLANKING . � ! I ) ! I ! .' �, � \ �` ,\ _, SIDEWALK TRANSITIONS I I I I t 1 I, + I� \ 1 1 �I \ ON EITHER SIDE FOR EASY . I' j / ( 1 1. lt�� = ` - f 55' WIDE GRASS LINER \\ ION, "� I I I \I "1 I r -� EMERGENCY S ILLWAY \ ,PEDE TR AN TRANS _ / I If I _:. N F, P \ 1 .' II L T I I t 1 ". 1 I1 t ELEV. ( le. ., CREST 496.33 f r .. / - f( I I I I 1\ , \ .. f I f I I I Ic Y�I\ "1 \ ! C G S i t 1 „ FI I c TO I �7 PROPOSED ESC 0 8 CL. III RCP STANDPIPE , Lk � OPOS I PR ' // ,' ..- 1 I ' + SYII I o $ I T _ j (I } I } \} I ` .I /1 \ ' SERVE AS THE RISER, CONTRACTOR SHALL REMOVE r j i 1 I I l I} l I j I ` -yG ,I UPPER PORTION OF THE 48" STANDPIPE & INSTALL A - I I to r= I I C �I I 1 CONE. CONTRACTOR I�" rf C -i, I L P I I I� :NEW 3 TALL VDOT MH-1 UPPER C N. r, y JL2 I I I / 14 1 I l l TO INSTALL ATRASHRACK IN PLACE OF THE FRAME J r A I \1 \ =< I I I % I & COVER FOR THE 2 " OPENING. TOP OF CONE 2 " 4 m 1 4 / b j I 1 I / % l 1 (.. I`, RISER TO HAVE AN ELEV: 495.33'. CONTRACTOR „ I I D �� I --- + .. % ) R ` f SHALL PLUG ESC DEWATERING ORIFICES I ,I '`�., ' �„ I, '� I 1 � � WATERTIGHT & INSTALL A NEW 5 LOW -FLOW 1 G - - / ,, MID -FLOW � \ . � L � 1 i i 1, , . , 1 ORIFICE ATELEV.-48g.oa AND THREE 6 0 - ;i ! y/ % \ �• r� -� I , 1 � : ` � ". I1 \ ORIFICES AT ELEV. 493.50' / l / it !k I:. "' PROPOSED ESC 018" CL. III RItP \ / I , % / I \ I / 1 - 1 I 1 ! - BARREL (L-88'; S=o.5o94; INV / I , -,.1 = -- - 1 I , x 1 I IN=488.44; INV OUT=488,ao \, � i PROPPSED FILT B 05CAPE VAU T �� I i } } \ v \, /7 / _' (FTEISV--B FOOTPP = 13' x 7' / ♦ ]� o \ \ - \ / / TOP,OF MULCH ELEVATION 524.50' (FERIM'E F;R / % " } i } 1 \ l ,` / / / ` % GRASS SVYALE-RIM ELEVATION-=-=-525.50 )/ - r l I } \ _�\\ PROPOSED ESC 018" BARREL 1 / ( / 6' SDR 3S'PVC Oh-RIP�ECEVATION=522.Q8'' � � � t'^ `, r } I \ c +� � OUTLET SHALL BE CONVERTED TO / / 2' W DE CU B CUT TO DIRECT FIRSy FLU5H TO GRASS,SwAL�: ' ��0 ' / �tI �\ " HAVE A HYDRAULIC EQUIVALENT / PROPOSED/YARD DRAINT()CONN�eT WIT�I"YARD_DRAIN SYSTEM' / / / >�I I £ \\ \� \ I OPENING OFA012"B%1RR€L.TO 11 I "� BEHIND LOTS 53-61, AND'THEN QAYLIGHT TO THE GRASS SWALE / / / / / , \ vI I `ACCOMPLISH THIS, CONTRACTOR - UPL A D OF THE PRQPOSED'OFFLINE FILTERRA BIO�CAPE VAULT.,STR. 22 BROPO�SED VDOT#3 COARSE A�GREG(4TFI ) ( \ SHALL INSTALL A STEEL WEIR PLATE _j _J SHALL SERVE AS THE BYPASS INLET FOR PJARKINC� LOT DtURINCP' LARGER / OUTLET PR TECTI N w/GEOT IL " 'AT THE PIPE OUTFALL COVERING -- f STORM VENTS &ANY//EXCESS FLOWS TO/THE FIL'TERRI BIOSCAPE CAN FIL7�FR FABR�G UND RLAYMENT & DOT ! I r L THE TOP 10" OF THE PIPE. o /SAFELY OVERFLOW,VIA SHEET FLOW TO THE D ENTION BASIN. SEE / , ,� DETAIL N THE NEXT / I / STD.'ES-1(L-I.5', Vy1=2', W2=8', d=2 MIN. E \ \ 0,0, �4 ,V 0 SCO . 'OLLINSZ ) No. 35791 ,2a Sy ORAL t z W � I- 0 z z Uj o 0 J x r r � <L o z Ce r_ i. o i� W v �/ = "? = o J Zz o ~' J Q Ce � o H E W CL W CO W n N Ce H W Ce [ w a / n. 0 N LU U) W > W ce Go Go co a iz� o r4 en rl� 56 �z 6 Ey V W rr) W nz 0�3 Q z W o z J C J �o C) U, U o r c- 6 V o V)Q ,_ C O o C N Q)- 0 � ?: , V) 0DL Q) x U v 15 a, 0 o � n + (DD o Q) .0 , 03 r- 6 >,_y O 2 L V) 0 C: c O U U 0 E V) ,J C ,J U 7 V O �, ___ :1 _U n 0 0) J E 3-0 5 _0 o -0 � E , o a, -•_- 0- U o :5 L L C-1 - 0 0 c > o V 0 0 V '' x m 'll a) +' r E - m - 6 0 C U) D Qom, -0 :5 0 U ,> o V) _0 i5 0 U Q C: C, ,- U Q) 0 0 (n 0 (-3 V) 7D 0 C-C a ?: COQ) V) 0 0 �Q 0 Q a >, r C 1- 0 DETENTION CELL CONSTRUCTION NOTES: GENERAL SWM NOTES: FACILITY PLANTING SPECIFICATIONS:1. STATE APPROVED TRASH RACKS AND ORIFICES SHALL BE INSTALLED ON ALL ORIFICE OPENINGS. SEE DETAILS ON THIS SHEET, OR EQUIVALENT, FOR INSTALLATION OF ORIFICE AND RISER TRASHRACKS. 1. THE DRY DETENTION CELL SHALL HAVE A TURF GROUND COVER, SUCH AS GRASS, MULCH OR SOME OTHER FORM OF A VEGETATIVE GROUNDCOVER. LANDSCAPING BEYOND THIS IS OPTIONAL AND IS NOT 2. CONCRETE FOUNDATIONS SHALL BE INSTALLED ON ALL RISER STRUCTURES MEETING MINIMUM VESCH 3.14 SPECIFICATIONS. REQUIRED. 3, CONTRACTOR SHALL HIRE A THIRD PARTY GEOTECHNICAL ENGINEER TO ENSURE THE EMBANKMENTS ARE STRUCTURALLY SOUND. THE EMBANKMENTS SHALL HAVE A 2. THE PROPOSED SIDE SLOPES OF THE CELL, EXCLUSIVE OF THE EMBANKMENT, SHALL BE A MAXIMUM OF 3:1 TO PROMOTE SETTLING & REDUCE THE RISK OF EROSION. THE PROPOSED FLOOR SLOPES SHALL COMPACTED CLAY CORE WITH A CUTOFF TRENCH & BE IN ACCORDANCE WITH THE DETAILS SHOWN ON THIS SHEET. BERMS AND SPILLWAYS SHALL BE STABILIZED WITH HAVE A SLOPE RANGING FROM 0.5%-1.0%. EC-3 MATTING AND THE REMAINING DISTURBED EMBANKMENT SLOPES SHALL BE STABILIZED WITH EC-2 MATTING. ALL BERM FILL MATERIAL SHALL CONSIST OF ML, CL, 3. PLANT SELECTION, IF CHOSEN, SHALL PROMOTE DIVERSE WILDLIFE AND WATERFOWL USE WITHIN THE CELL. SC OR GC SOILS & BE FREE OF WOOD, ROOTS, ROCKS OR ANY OTHER NON COMPACTING SOIL. COMPACTED FILL SHALL BE PROCTOR MAXIMUM DRY DENSITYASTM D698 4. THE LAN DSCAPING PLAN SHALL ALLOW THE POND TO MATURE INTO A NATIVE FOREST IN THE RIGHT PLACES, BUT YET KEEP MOWABLE TURF ALONG THE EMBANKMENT AND ALL ACCESS AREAS IF TREES AND HAVE A MINIMUM OF 95% OF MAXIMUM DRY DENSITY AND 2% OF OPTIMUM MOISTURE CONTENT. ALL EXISTING AND PROPOSED FILL MATERIAL AND PROPOSED AND SHRUBS ARE TO BE PLANTED. CONSTRUCTION SHALL BE APPROVED BY AN ONSITE. GEOTECHNICAL ENGINEER PRESENT DURING THE CONSTRUCTION OF THE EMBANKMENTS AND FILL AREAS, AND 5. WOODY VEGETATION SHALL NOT BE PLANTED OR ALLOWED TO GROW WITHIN 15 FEET OF THE TOE OF THE EMBANKMENT NOR WITHIN 25 FEET OF THE PRINCIPAL SPILLWAY STRUCTURE. PRESENT DURING THE CORE SAMPLING. 6. THE SOILS IN AND AROUND THE DETENTION CELL ARE OFTEN SEVERELY COMPACTED DURING THE CONSTRUCTION PROCESS, TO ENSURE STABILITY. THE DENSITY OF THESE COMPACTED SOILS CAN BE SO 4. THE DOWNSTREAM SIDE OF ALL EMBANKMENTS SHALL HAVE MAXIMUM 3:1 SLOPE. GREAT THAT IT EFFECTIVELY PREVENTS ROOT PENETRATION AND, THEREFORE, MAY LEAD TO PREMATURE MORTALITY OR LOSS OF VIGOR. AS A RULE OF THUMB, PLANTING HOLES SHOULD BE THREE 5. CONTRACTOR AND CONSTRUCTION SHALL ADHERE TO ALL OSHA REQUIREMENTS. ADDITIONALLY, SPECIAL ATTENTION SHALL BE GIVEN TO THE CONSTRUCTION TIMES DEEPER AND WIDER THAN THE DIAMETER OF THE ROOTBALL FOR BALL -AND -BURLAP STOCK, AND FIVE TIMES DEEPER AND WIDER FOR CONTAINER -GROWN STOCK. SHORING ASSOCIATED WITH THE BASIN EXCAVATION. 7. IF ELECTED, THE LANDSCAPING PLAN SHALL AVOID SPECIES THAT REQUIRE FULL SHADE, OR ARE PRONE TO WIND DAMAGE. EXTRA MULCHING AROUND THE BASE OF TREES AND SHRUBS IS STRONGLY RECOMMENDED AS A MEANS OF CONSERVING MOISTURE AND SUPPRESSING WEEDS IF PLANTS ARE TO BE INSTALLED. GENERAL CONSTRUCTION NOTES: CONTRACTOR REQUIREMENT'S: i. THE MINIMUM REQUIREMENTS SET FORTH IN VDOT STD. PB-1 SHALL BE MET FOR PIPE BEDDING AND BACKFILL. THE MINIMUM HEIGHT OF COVER FOR PIPES SHALL BE 1. THE CONTRACTOR SHALL BE RESPONSIBLE FOR LAYOUT OF ALL WORK COVERED UNDER THESE PLANS. METAND BE IN ACCORDANCE WITH VDOT STD. PC-1. 2. ALL FILL SHALL BE PLACED AT 95% COMPACTION AND TESTED BY A GEOTECHNICAL ENGINEER TO ENSURE COMPACTION 15 REACHED AND MAINTAINED. 2. LANDSCAPE CONTRACTOR SHALL REFER TO THE STANDARDIZED LANDSCAPE SPECIFICATIONS FOR THE STATE OF VIRGINIA FOR ADDITIONAL INFORMATION. THE CONTRACTOR SHALL ABIDE BY ITS 3. PRIOR TO CONSTRUCTION THE CONTRACTOR SHALL TEST -DIG AT THE EXISTING INLETS & OUTFALLS TO CONFIRM THE INVERTS AND TO ENSURE THE PROPOSED GRADES CONTENTS; HOWEVER ANY NOTES OR SPECIFICATIONS ON THE PLANS SHALL SUPERSEDE THOSE OUTLINED IN THE SPECIFICATIONS MANUAL (COPIES ARE AVAILABLE FOR A FEE FROM THE VIRGINIA CAN BE ACHIEVED. CONTRACTOR SHALL ALSO VERIFY EXISTING ELEVATIONS OF CURB, GUTTER, PAVEMENT AND BUILDINGS. CONTRACTOR SHALL NOTIFY COLLINS CHAPTER OF THE AMERICAN SOCIETY OF LANDSCAPE ARCHITECTS, VIRGINIA NURSERYMEN'S ASSOCIATION, INC. AND THE VIRGINIA SOCIETY OF LANDSCAPE DESIGNERS). ENGINEERING OF ANY DISCREPANCIES IN THE HORIZONTAL OR VERTICAL ALIGNMENT PRIOR TO ORDERING AND CONSTRUCTION. 3. ALL PLANT MATERIAL SHALL MEET THE MINIMUM SPECIFICATIONS AND STANDARDS DESCRIBED IN THE CURRENT ISSUE OF THE AMERICAN STANDARD FOR NURSERY STOCK, PUBLISHED BY THE AMERICAN 4. ALL PROPOSED SLOPES STEEPERTHAN 3:1 SHALL HAVE A LOW MAINTENANCE GROUND COVER FOR STABILIZATION PURPOSES. THESE AREAS SHALL NOT BE PLANTED ASSOCIATION OF NURSERYMEN, 1250 STREET, NW, SUITE 500, WASHINGTON, DC 20005. WITH A GRA55 COVER FOR STABILIZATION & SHALL BE A GROUND COVER CHOSEN FROM TABLE 3.37C OFTHE VESCH UNLESS OTHERWISE DIRECTED BYTHE INSPECTOR. 4. THE CONTRACTOR SHALL VERIFY ALL DIMENSIONS IN THE FIELD AND NOTIFY THE DESIGNER OF ANY VARIANCE FROM THE PLAN. 5. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR CONSTRUCTION INDUSTRY (29 CFR PART 1926). 5. THE LANDSCAPE CONTRACTOR IS RESPONSIBLE FOR VERIFYING THE LOCATION OF ANY ONSITE UTILITIES (CALL MISS UTILITY 1-800-552-7001 BEFORE ANY EXCAVATION). 6. REFER TO THE APPROVED FINAL SITE PLANS FOR ANY DETAILED SITE INFORMATION. SWM FOREST & OPEN SPACE EASEMENT NOTES: 7. ALL WORK SHALL BE COORDINATED WITH OTHER PARTIES. 3. NUTRIENT CREDITS WILL BE REQUIRED TO BE PURCHASED FOR THIS DEVELOPMENT PRIOR TO VSMP PLAN APPROVAL.'SWM' IS AN ACRONYM FOR STORMWATER 8. PLANTS, WHEN APPLICABLE, WILL BE PREPARED FOR SHIPMENT IN A MANNER THAT WILL NOT CAUSE DAMAGE TO THE BARK,, BUDS, BRANCHES, STEMS, OR OVERALL SHAPE OF THE STOCK. CONTAINER MANAGEMENT. GROWN PLANTS WILL BE TRANSPORTED IN THE CONTAINERS IN WHICH THEY HAVE BEEN GROWN. 4. THE SWM FORESTAND OPEN SPACE EASEMENT IS SUBJECTTO THE GUIDANCE SET FORTH BY DEQ IN THE VIRGINIA STORMWATER MANAGEMENT PROGRAM. THEAREAS 9. ALL PLANT MATERIAL, WHEN APPLICABLE AND NOT OTHERWISE SPECIFIED, SHALL BE UNIFORMLY BRANCHED AND HAVE A VIGOROUS ROOT SYSTEM. PLANT MATERIAL SHALL BE HEALTHY, VIGOROUS, WILL REMAIN UNDISTURBED IN A NATURAL VEGETATED STATE EXCEPT FOR ACTIVITIES AS APPROVED BY THE LOCAL PROGRAM AUTHORITY SUCH AS FOREST AND FREE FROM DEFECTS, DECAY, DISEASES, INSECT PEST EGGS, AND ALL FORMS OF INFESTATION. ALL PLANT MATERIAL SHALL BE FRESH, FREE FROM TRANSPLANT SHOCK OR VISIBLE WILT. PLANTS MANAGEMENT, CONTROL OF INVASIVE SPECIES, REPLANTING AND REVEGETATING, PASSIVE RECREATION (e.g. TRAILS), AND LIMITED BUSH HOGGING TO MAINTAIN DEEMED UNHEALTHY WILL BE REJECTED. DESIRED VEGETATIVE COMMUNITY (BUT NO MORE THAN FOUR TIMES A YEAR). 10.ALL CONTAINER STOCK PLANTINGS SHALL HAVE BEEN PROPAGATED IN A CONTAINER LONG ENOUGH FOR THE ROOT SYSTEM TO HAVE DEVELOPED SUFFICIENTLY TO HOLD ITS SOIL. CONTAINER STOCK WITH POORLY DEVELOPED ROOT SYSTEMS WILL NOT BE ACCEPTED. 11.PLANTS NOT INSTALLED ON THE DAY OF ARRIVAL ON SITE SHALL BE STORED AND PROTECTED BY THE CONTAINER. OUTSIDE STORAGE AREAS WILL BE SHADED AND PROTECTED FROM THE WIND AND SUN. PLANTS STORED ON SITE SHALL BE PROTECTED FROM ANY DRYING AT ALL TIMES BY COVERING THE BALLS OR ROOTS WITH MOIST SAWDUST, WET BURLAP, WOOD CHIPS, SHREDDED BARK, PEAT MOSS, OR OTHER SIMILAR MULCHING MATERIAL. 12.THE OWNER RESERVES THE RIGHT TO SUBSTITUTE PLANT MATERIAL TYPE, SIZE AND/OR QUANTITY. ANY SUBSTITUTIONS MUST BE APPROVED BY THE LOCAL MUNICIPALITY's REVIEW AGENCY. 13.MINOR FIELD ADJUSTMENTS MAYBE NECESSARY DUE TO SITE CONDITIONS (EX: ROOTBALL AND UTILITY CONFLICT). MAJOR ADJUSTMENTS MUST BE APPROVED BY THE DESIGNER. 14.NO PLANTING SHALL OCCUR WHEN THE SOIL IS FROZEN. 15.PLANT MATERIAL SHALL BE PLACED IN EXISTING SOIL WITH EACH PLANTING PIT EXCAVATED TO A SIZE SUFFICIENT TO CONTAIIN THE ENTIRE ROOT BALL OR ROOT MASS, WITHOUT CRAMPING ROOT STOCK. 0 16.THE CONTRACTOR SHALL MAINTAIN A ONE 1 CALENDAR YEAR 90%CARE AND REPLACEMENT () N WARRANTY FOR ALL PLANTINGS. THE PERIOD OF CARE AND REPLACEMENT SHALL BEGIN AFTER INSPECTION AND APPROVAL OFMAR. IS E COMPLETE INSTALLATION OF ALL PLANTS SAL ANDOF T CONTINUE FORS W HIN THE 17.THE CONTRACTOR IS RESPONSIBLE FOR REMOVAL AND DISPOSAL OF TRASH AND DEBRIS WITHIN THE LIMITS OF THE PLANTING ON A DAILY BASIS. FILTERRA BIOSCAPE VAULT DETAILS - CONSTRUCTION SHALL ADHERE TO FILTERRA STANDARDS - CONTACT GLEN PAYTON - GPAYTON CONTECHES.COM FOR DETAILS CC 18.THE CONTRACTOR WILL NOT BE RESPONSIBLE FOR PLANT MATERIAL THAT HAS BEEN DAMAGED BY VANDALISM, FIRE, OR OTHER ACTIVITIES BEYOND THE CONTRACTOR'S CONTROL. FACILITY CONSTRUCTION 1. THE DETENTION CELL MAY SERVE AS A SEDIMENT BASIN DURING PROJECT CONSTRUCTION. IFTHIS IS DONE, THE VOLUME SHALL BE BASED ON THE MORE STRINGENT SIZING RULE (EROSION AND SEDIMENT CONTROL REQUIREMENTS VS. WATER QUALITY& QUANTITY TREATMENT REQUIREMENTS). INSTALLATION OF THE PERMANENT RISER SHALL BE INITIATED DURING THE CONSTRUCTION PHASE, AND DESIGN ELEVATIONS SHALL BESET WITH FINAL CLEANOUT OF THE SEDIMENT BASIN AND CONVERSION TO THE POST -CONSTRUCTION DETENTION CELL IN MIND. THE BOTTOM ELEVATION OF THE DETENTION CELL SHALL BE LOWER THAN THE BOTTOM ELEVATION OF THE TEMPORARY SEDIMENT BASIN WHENEVER POSSIBLE. APPROPRIATE PROCEDURES SHALL BE IMPLEMENTED TO PREVENT DISCHARGE OF TURBID WATERS WHEN THE BASIN IS BEING CONVERTED INTO AN ED POND. 2. DETENTION CELLS SHALL ONLY BE CONSTRUCTED AFTER THE CONTRIBUTING DRAINAGE AREA TO THE CELL IS COMPLETELY STABILIZED. IF THE PROPOSED DETENTION CELL WILL BE USED AS A SEDIMENT TRAP OR BASIN DURING THE CONSTRUCTION PHASE, THEN THE FACILITY WILL BE DEWATERED, DREDGED AND RE -GRADED TO DESIGN DIMENSIONS AFTER THE ORIGINAL SITE CONSTRUCTION IS COMPLETE. 3. INSTALL E&S CONTROLS PRIOR TO CONSTRUCTION OF THE DETENTION CELL INCLUDING TEMPORARY DE -WATERING DEVICES.AND STORMWATER DIVERSION PRACTICES. ALL AREAS SURROUNDING THE CELL THAT ARE GRADED OR DENUDED DURING CONSTRUCTION SHALL BE PLANTED WITH TURF GRASS, NATIVE PLANTINGS, OR OTHER APPROVED METHODS OF SOIL STABILIZATION. 4. CONTRACTOR SHALL EXCAVATE THE CORE TRENCH AND INSTALL THE SPILLWAY PIPE DURING THE ESC PHASE. 5. CONTRACTOR SHALL ALSO INSTALL THE RISER, OUTFLOW STRUCTURE AND/OR AND BARREL(S) DURING THE ESC PHASE TO ENSURE THE TOP INVERT OF THE OVERFLOW WEIR IS CONSTRUCTED LEVEL AT THE DESIGN ELEVATION. 6. THE CONTRACTOR SHALL THEN CONSTRUCT THE EMBANKMENT AND ANY INTERNAL BERMS (IF APPLICABLE) IN 8 TO 12-INCH LIFTS AND COMPACT THE LIFTS WITH APPROPRIATE EQUIPMENT.THE CONTRACTOR SHALL ALSO ADHERE TO THE CLAY LINER SPECIFICATIONS OUTLINED IN TABLE 14.4 BELOW: Table ?4.9.. Gtay Cinec Specrfcadons J?Fq [t TeSt,MIeIF?d LhArf S Glf{8 Pen eabiGty , SThi, 4 ?4 1 Cm 1 x Ir PlasGdty IRde Cof Clay ASTM DA231424 % tot less than 15 Li ulti Limit of Clay ASTM 11-2216: °A Not les5i than 311, Ciay.Patia dsPassing ASTM 0422 °% Not Tesstftatt 4 Cia F;-_drhi5adwfi flSTPA. D-2218 tg 61aoda d idefor den$d ` uaurca v►rgimia starmwater management Hanai)GOK (7VgiJ 7. UPON COMPLETION OF THE EMBANKMENT GRADING, THE CONTRACTOR SHALL EXCAVATE/GRADE UNTIL THE APPROPRIATE ELEVATION AND DESIRED CONTOURS ARE ACHIEVED FOR THE BOTTOM AND SIDE SLOPES OF THE DETENTION CELL. 8. CONTRACTOR SHALL THEN CONSTRUCT THE EMERGENCY SPILLWAY IN CUT OR STRUCTURALLY STABILIZED SOILS. 9. FINISH CONSTRUCTION OF ALL OUTLET STRUCTURES, INCLUDING DOWNSTREAM RIP -RAP APRON PROTECTION. 10.THE CONTRACTOR SHALL NEXT STABILIZE EXPOSED SOILS WITH TEMPORARY SEED MIXTURES APPROPRIATE FOR THE CELL. 11.THE CONTRACTOR SHALL THEN INSTALL THE LANDSCAPING IF APPLICABLE. 12.ALL CONSTRUCTION SHALL ADHERE TO THE VIRGINIA DEQ POST CONSTRUCTION BMP CLEARINGHOUSE REQUIREMENTS SET FORTH IN DESIGN SPECIFICATION NUMBER 15. FACILITY MAINTENANCE: MAINTENANCE OF DETENTION CELLS IS DRIVEN BY ANNUAL INSPECTIONS THAT EVALUATE THE CONDITION AND PERFORMANCE OF THE CELL. DURING THESE INSPECTIONS THE FOLLOWING TASKS SHALL BE PERFORMED BY THE CONTRACTOR IN THE FIRST YEAR FOLLOWING INSTALLATION, AND THE OWNER THEREAFTER: 1. MEASURE SEDIMENT ACCUMULATION LEVELS. 2. MONITOR THE GROWTH OF WETLANDS, TREES AND SHRUBS PLANTED, AS APPLICABLE. RECORD THE SPECIES AND THEIR APPROXIMATE COVERAGE, AND NOTE THE PRESENCE OF ANY INVASIVE PLANT SPECIES, AS APPLICABLE. 3. INSPECT THE CONDITION OF STORMWATER INLETS TO THE POND FOR MATERIAL DAMAGE, EROSION OR UNDERCUTTING. 4. INSPECT THE BANKS OF UPSTREAM AND DOWNSTREAM CHANNELS FOR EVIDENCE OF SLOUGHING, ANIMAL BURROWS, BOGGY AREAS, WOODY GROWTH, OR GULLY EROSION THAT MAY UNDERMINE EMBANKMENT INTEGRITY. 5. INSPECT THE OUTFALL CHANNEL FOR EROSION, UNDERCUTTING, RIP -RAP DISPLACEMENT, WOODY GROWTH, ETC. 6. INSPECT CONDITION OF PRINCIPAL SPILLWAY AND RISER FOR EVIDENCE OF SPALLING, JOINT FAILURE, LEAKAGE, CORROSION OR OTHER FAILURES. 7. INSPECT CONDITION OF ALL TRASH RACKS, REVERSE SLOPED PIPES OR FLASHBOARD RISERS FOR EVIDENCE OF CLOGGING, LEAKAGE, DEBRIS ACCUMULATION OR OTHER FAILURES. 8. INSPECT MAINTENANCE ACCESS TO ENSURE IT IS FREE OF WOODY VEGETATION, AND CHECK TO SEE WHETHER VALVES, MANHOLES AND LOCKS CAN BE OPENED AND OPERATED. 9. INSPECT INTERNAL AND EXTERNAL SIDE SLOPES OF THE POND FOR EVIDENCE OF SPARSE VEGETATIVE COVER, EROSION, OR SLUMPING, AND MAKE NEEDED REPAIRS IMMEDIATELY. FACILITY INSPECTION: MULTIPLE INSPECTIONS ARE CRITICAL TO ENSURE THE CELL(S) ARE PROPERLY CONSTRUCTED. BECAUSE THE TIMING OF THE INSTALLATION IS DICTATED BY THE CONTRACTOR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER AND INSPECTOR PRIORTO INSTALLATION. MULTIPLE SITE VISITSAND INSPECTIONS ARE REQUIRED TO BE SCHEDULED BY THE CONTRACTOR, WITH THE ENGINEER AND INSPECTOR, DURING THE FOLLOWING STAGES OF THE CELL'S CONSTRUCTION PROCESS: 1. PRE -CONSTRUCTION MEETING 2. INITIAL SITE PREPARATION (INCLUDING INSTALLATION OF PROJECT E&S CONTROLS) 3. EXCAVATION/GRADING (E.G., INTERIM/FINAL ELEVATIONS) 4. DETENTION CELL INSTALLATION (E.G., INTERIM AND FINAL ELEVATIONS) 5. INSTALLATION OF THE EMBANKMENT, THE RISER/PRIMARY SPILLWAY, AND THE OUTLET STRUCTURE(S). 6. PLANTING PHASE, IFAPPLICABLE (WITH AN EXPERIENCED LANDSCAPE ARCHITECT PRESENT) 7. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE) OFFLINE FILTERRA BIOSCAPE VAULT CONSTRUCTION NOTES: FACILITY PLANTING SPECIFICATIONS: 1. CONTRACTOR SHALL SELECT AN APPROPRIATE PLANT FROM CONTECH's APPROVED LIST. CONTRACTOR SHALL CONSULT CONTECH ENGINEERED SOLUTIONS FOR PLANT DETAILS. PLANT SELECTION FROM THE APPROVED CONTECH MID -ATLANTIC REGION 'FILTERRA BIOSCAPE PLANT LIST' IS REQUIRED. CONTRE-1CTOR REQUIREMENTS: 1. THE CONTRACTOR SHALL BE RESPONSIBLE FOR LAYOUT OF ALL WORK COVERED UNDERTHESE PLANS. 2. THE CONTRACTOR SHALL CONSULT WITH CONTECH ENGINEERING FOR SPECIFIC MANUFACTURER REQUIREMENTS. THE CONTRACTOR SHALL CONSULT WITH CONTECH ENGINEERING PRIOR TO CONSTRUCTION AND ENSURE ENOUGH LEAD TIME IS PROVIDED TO AVOID DELAYS FOR MANUFACTURING. 3. THE CONTRACTOR SHALL VERIFY ALL DIMENSIONS IN THE FIELD AND NOTIFY THE DESIGNER OF ANY VARIANCE FROM THE PLAN. 4. THE CONTRACTOR IS RESPONSIBLE FOR VERIFYING THE LOCATION OF ANY ONSITE UTILITIES (CALL MISS UTILITY 1-800-552-70011 BEFORE ANY EXCAVATION). 5. REFER TO THE APPROVED FINAL SITE PLANS FOR ANY DETAILED SITE INFORMATION. 6. ALL WORK SHALL BE COORDINATED WITH OTHER PARTIES. 7. THE CONTRACTOR SHALL MAINTAIN A ONE (1) CALENDAR YEAR 90% CARE AND REPLACEMENT WARRANTY FOR ALL PLANTINGS. THE PERIOD OF CARE AND REPLACEMENT SHALL BEGIN AFTER INSPECTION AND APPROVAL OF THE COMPLETE INSTALLATION OF ALL PLANTS AND CONTINUE FOR ONE CALENDAR YEAR. 8. THE CONTRACTOR IS RESPONSIBLE FOR REMOVAL AND DISPOSAL OF TRASH AND DEBRIS WITHIN THE LIMITS OF THE PLANTING ON A DAILY BASIS. 9. THE CONTRACTOR WILL NOT BE RESPONSIBLE FOR PLANT MATERIAL THAT HAS BEEN DAMAGED BY VANDALISM, FIRE, OR OTH ER ACTIVITIES BEYOND THE CONTRACTOR'S CONTROL. FACILITY CONS I'RUCTION 1. THE CONTRACTOR SHALL WORK CLOSELY WITH CONTECH ENGINEERING TO ENSURE ALL THE MINIMUM MANUFACTURER REQUIREMENTS ARE MET. 2. THE FILTERRA BIOSCAPE VAULT SHALL ONLY BE CONSTRUCTED AFTER THE CONTRIBUTING DRAINAGE AREA TO THE BMP IS COMPLETELY STABILIZED 3. INSTALL E&S CONTROLS PRIOR TO CONSTRUCTION OF THE BMP INCLUDING STORMWATER DIVERSION AND FILTERING PRACTICES. ALL AREAS SURROUNDING THE BMP THAT ARE GRADED OR DENUDED DURING CONSTRUCTION SHALL BE PLANTED WITH TURF GRASS, NATIVE PLANTINGS, OR OTHER APPROVED METHODS OF SOIL STABILIZATION. 4. CONTRACTOR SHALL ENSURE THE INLET CONVEYING RUNOFF TO THE FILTERRA BIOSCAPE VAULT IS ADEQUATE AND STABILIZED. 5. THE CONTRACTOR SHALL NEXT STABILIZE EXPOSED SOILS WITH TEMPORARY SEED MIXTURES APPROPRIATE FOR THE SURROUNDING AREA. 6. THE CONTRACTOR SHALL THEN INSTALL THE VAULT AND ITS OUTLET. THE CONTRACTOR SHALL THEN COMPLETE THE FILTERRA BIOSCAPE VAULT CONSTRUCTION BY INSTALLING ITS INTERNAL COMPONENTS. CONSTRUCTION SHALL ADHERE TO THE VIRGINIA DEQ POST CONSTRUCTION BMP CLEARINGHOUSE REQUIREMENTS AND CONTECH ENGINEERING's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s REQUIREMENTS.. BECAUSE THE TIMING OF THE INSTALLATION IS DICTATED BY THE CONTRACTOR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER, INSPECTOR AND CONTECH REPRESENTATIVE PRIOR TO INSTALLATION. MULTIPLE SITE VISITS AND INSPECTIONS ARE REQUIRED TO BE SCHEDULED BY THE CONTRACTOR, WITH THESE 3 PARTIES, DURING THE FOLLOWING STAGES OF THE BMP'S CONSTRUCTION PROCESS: 1. PRE -CONSTRUCTION MEETING 2. INITIAL SITE PREPARATION (INCLUDING INSTALLATION OF PROJECT E&S CONTROLS) 3. EXCAVATION/GRADING (E.G., INTERIM/FINAL ELEVATIONS) 4. FILTERRA BIOSCAPE VAULT & OUTLET INSTALLATION (E.G., INTERIM AND FINAL ELEVATIONS) 5. INSTALLATION OF THE VAULTS INTERNAL COMPONENTS 6. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE) t {~ h A ' •h 1 L 1 ti T / ny v 1. e StormRalc-1m ROUND SERIES TRASH RACK (OR EQUIVALENT) G�I"1�ITt="M�tN�It?I,� , sT tIdQ.ARa 43('IhVi�t i RACK $HCiv4►W GlIaAEh[Sl,fi IN IltilFi s ` PLAN StorMIR,axTIm Round 541esortoncrete,Mabh,61 part .. Dtm Ak DIrn B On t MIn. IQ m1n'00 it24 174 148 A56 2 .A 14 y, 40'' 3 43 1 is 54, . 44 57 HS 6 18 Y; v4 I0 Plastic Solutions, Inc. cVsrOMER,. +�4y P0,8"43%, -Wl ni Eye25i�tr V,A, ZiOM us M Gt ,t�i, wt��i, VA � ,FI'i7) B77.57�i � PI�IECT:'. (540) 7x2-z2j!_. c htgm w.� .W.f lastirrsal4it4on;w+n' stutok ka h-waxAG It1 �. ilk AA' P Ew-w U ITUF �titEICA�{�.UiC� tf rkrilEf1lits+f l dONC ETE TFtUOTURIR �1111� �181Qfw IN CaE; HUr'TURE DIM ION fJU7SlDE TRLJOT*E Dl%AEAISIC)I` AVAILAPLEOPTIONS. CIRCtS I�A`Il~i{ I*ORVEItt HOPE ANTI-)lQR1EX' PL,ATE (PEQ'D) DAM - DETAIL MRUsNG fq. ilq trt T.9 F, ILsa rrr [': 1k:1'C* l,��' .�lst��. Rts�teal �raul t,.''I" Run! P.T41.0 (f,)p4l?jiiw, II,! f "?I,ri �t.S al t7J:?- LIY Yt141, ttt�aasrt:il,�rsrre'crl ' Lr� ���"�t•Ttit' ��(�� �,:..r'`€utlfrc�s Inc, u a a 1�TI� ttr�f�a �r}a 3'{'I p1i3iG�s raaesuti��.tuc�tl u1r P',13st�� alukacr.rt thr ni quoI PLAN - 1C �'��'"��yr � [� j � ['' �t l.a� .1. k�,_t S .`�,.C.AG EMBANKMENT NOTES: AFTER AN INVESTIGATION OF THE SITE's SOILS, SITE VISITS, AN ANALYSIS OF THE SURVEYED TOPOGRAPHY AND AN EXAMINATION OF VA DEQAPPENDIX A: EARTHEN EMBANKMENT (REQUIREMENTS vs. RECOMMENDATIONS), THE APPLICANT HAS PROVIDED A COMPREHENSIVE EMBANKMENT DESIGN THAT DOES NOT NEED A GEOTECHNICAL STUDY AT THIS TIME. SUCH IS THE CASE DUE TO THE PRECAUTIONARY EMBANKMENT DESIGNS PROPOSED. A SUMMARY OF THE EMBANKMENT DESIGN REQUIREMENTS ARE LISTED BELOW, MANDATING THE CONTRACTOR MEET THESE REQUIREMENTS AT A MINIMUM. THE EMBANKMENTS SHALL HAVE A COMPACTED CLAY CORE WITH A CUTOFF TRENCH & BE IN ACCORDANCE WITH THE DETAILS SHOWN ON THIS SHEET. BERMS AND SPILLWAYS SHALL BE STABILIZED WITH EC-3 MATTING & THE REMAINING DISTURBED SLOPES SHALL BE STABILIZED WITH EC-2 MATTING. ALL BERM FILL MATERIAL SHALL CONSIST OF ML, CL, SC OR GC SOILS & BE FREE OF WOOD, ROOTS, ROCKS OR ANY OTHER NON COMPACTING SOIL. COMPACTED FILL SHALL BE PROCTOR MAXIMUM DRY DENSITY ASTM D698 AND HAVE A MINIMUM OF 95% OF MAXIMUM DRY DENSITY AND 2%OF OPTIMUM MOISTURE CONTENT. ALL FILL MATERIAL AND CONSTRUCTION SHALL BE APPROVED BY AN ONSITE GEOTECHNICAL ENGINEER PRESENT DURING THE CONSTRUCTION OF THE EMBANKMENTS AND FILL AREAS. TOO. DRAIN s Figwe,A-da. I -I 0� SCOT T COLLINSZ No. 35791 �� OZ S � I E 0 NA L Plastic Solutions, Inc. cVsrOMER,. +�4y P0,8"43%, -Wl ni Eye25i�tr V,A, ZiOM us M Gt ,t�i, wt��i, VA � ,FI'i7) B77.57�i � PI�IECT:'. (540) 7x2-z2j!_. c htgm w.� .W.f lastirrsal4it4on;w+n' stutok ka h-waxAG It1 �. ilk AA' P Ew-w U ITUF �titEICA�{�.UiC� tf rkrilEf1lits+f l dONC ETE TFtUOTURIR �1111� �181Qfw IN CaE; HUr'TURE DIM ION fJU7SlDE TRLJOT*E Dl%AEAISIC)I` AVAILAPLEOPTIONS. CIRCtS I�A`Il~i{ I*ORVEItt HOPE ANTI-)lQR1EX' PL,ATE (PEQ'D) DAM - DETAIL MRUsNG fq. ilq trt T.9 F, ILsa rrr [': 1k:1'C* l,��' .�lst��. Rts�teal �raul t,.''I" Run! P.T41.0 (f,)p4l?jiiw, II,! f "?I,ri �t.S al t7J:?- LIY Yt141, ttt�aasrt:il,�rsrre'crl ' Lr� ���"�t•Ttit' ��(�� �,:..r'`€utlfrc�s Inc, u a a 1�TI� ttr�f�a �r}a 3'{'I p1i3iG�s raaesuti��.tuc�tl u1r P',13st�� alukacr.rt thr ni quoI PLAN - 1C �'��'"��yr � [� j � ['' �t l.a� .1. k�,_t S .`�,.C.AG EMBANKMENT NOTES: AFTER AN INVESTIGATION OF THE SITE's SOILS, SITE VISITS, AN ANALYSIS OF THE SURVEYED TOPOGRAPHY AND AN EXAMINATION OF VA DEQAPPENDIX A: EARTHEN EMBANKMENT (REQUIREMENTS vs. RECOMMENDATIONS), THE APPLICANT HAS PROVIDED A COMPREHENSIVE EMBANKMENT DESIGN THAT DOES NOT NEED A GEOTECHNICAL STUDY AT THIS TIME. SUCH IS THE CASE DUE TO THE PRECAUTIONARY EMBANKMENT DESIGNS PROPOSED. A SUMMARY OF THE EMBANKMENT DESIGN REQUIREMENTS ARE LISTED BELOW, MANDATING THE CONTRACTOR MEET THESE REQUIREMENTS AT A MINIMUM. THE EMBANKMENTS SHALL HAVE A COMPACTED CLAY CORE WITH A CUTOFF TRENCH & BE IN ACCORDANCE WITH THE DETAILS SHOWN ON THIS SHEET. BERMS AND SPILLWAYS SHALL BE STABILIZED WITH EC-3 MATTING & THE REMAINING DISTURBED SLOPES SHALL BE STABILIZED WITH EC-2 MATTING. ALL BERM FILL MATERIAL SHALL CONSIST OF ML, CL, SC OR GC SOILS & BE FREE OF WOOD, ROOTS, ROCKS OR ANY OTHER NON COMPACTING SOIL. COMPACTED FILL SHALL BE PROCTOR MAXIMUM DRY DENSITY ASTM D698 AND HAVE A MINIMUM OF 95% OF MAXIMUM DRY DENSITY AND 2%OF OPTIMUM MOISTURE CONTENT. ALL FILL MATERIAL AND CONSTRUCTION SHALL BE APPROVED BY AN ONSITE GEOTECHNICAL ENGINEER PRESENT DURING THE CONSTRUCTION OF THE EMBANKMENTS AND FILL AREAS. TOO. DRAIN s Figwe,A-da. I -I 0� SCOT T COLLINSZ No. 35791 �� OZ S � I E 0 NA L H Z' W a Z 0 0 U Z U) ,, O z z U 10 a W W w ? ❑ W �J > a p f�l _LU W LU ce W 00 00 00 m rN LEGEND ROADS Q ss -----200---- 200 240.55 EXISTING CULVERT CUL VERT DROP INLET & STRUCTURE NO. CURB CURB & GUTTER PROPOSED PAVEMENT EC-3A DI TCH DEP7H OF EC-3A DITCH EC-2 DI TCH DEPTH OF EC-2 DITCH EARTH DITCH DRI VEWAY CUL VERT BENCH MARK CLEARING LIMITS VDOT STANDARD STOP SIGN EXIS77NG CONTOUR PROPOSED CONTOUR PROPOSED SPOT ELEVA77ON GENERAL NOTES 1. THE OWNER/CLIENT OF THIS IPROPERTY IS: MOSS ACQUISITIONS 321 E MAiN STREET CHARLOTTESWLLE, VA 22902 AWNiTY ESTATES LLC 455 SECOND STREET SE, 57HI FLOOR CHARLOTTESWLLE, VA 22902 2. THE DEVELOPER OF THiS PROPERTY IS RI VERBEND DEVELOPMENT, IN(C. 321 E MAiN ST, SUi TE 201 CHARLOTTESVILLE, VA 22902 AT7N: ALAN TAYLOR J. THESE PLANS HAVE BEEN PREPARED BY- COLLINS ENGINEERING, INC 200 GARRETT STREET, SU17E K CHARLOTTESVILLE, VA 22902 TELEPHONE- (434) 293-3719 FACSIMILE. (434) 293-2813 4. SOURCE OF TOPO & SURVEY' SURVEY PROVIDED BY ROUDABUSH, GALE, AND ASSOCIATE'S, DATED AUGUST 2013• TOPO FIELD VERIFIED DECEMBER 2014. 5. ZONING: PRO -PLANNED RESIDENTIAL DEVELOPMENT ZMA 2013-016 6. TAX MAP AND PARCEL NUMBiER. 91-16C, 91-16E, 91-16A, 91-14 Z USGS DATUM: NAD 83 8. LOCA770N/ADDRESS OF PROJIECT EAST OF AVINITY I DEVELOPMENT 9. TOTAL ACREAGE OF S17E. 13.4153 ACRES 10. SITE PHASING. • MAXIMUM FOUIR PHASES 11. PUBLIC UTILITIES.' 77 CONNECT T(0 EXISTING PUBLIC SEWER AND WATER * COLLINS ENGINEERING SHALL N(9T HAVE AUTHORITY OVER CONTRACTOR'S WORK, SAFETY PRECAU77ONS, SCHEDULES, OR COMPLIANCE WI7H LAWS AND REGULATIONS. WE SHALL NOT ASSUME RESPIONSIBILiTY FOR ANY CONSTRUC7ION STARTED PRIOR TO PLAN APPROVAL. EROSION & SEDIMENT CONTROL MEASURES: - IS, DENOTES TOP/BACK OF CURB S7RUCTURAL EROSION AND SEDIMENT CON7ROL PRACTICES SHALL BE IN ACCORDANCE T/B DENOTES TOP OF BOX WITH THE ViRGiNIA EROSION AND E)EDIMENT CONTROL HANDBOOK. S7RUCTURAL PRAC7CES USED IN THIS SEC77ON CONSIST OF THE FOLLOWING: EROSION CONTROL , VIRGWIA EROSION &SEDIMENT CONTROL 5.O1 SAFELY FENCE.• uAA1nAT/In!! CD.-r1r7f1AT7nA1 A111AAQrD A 0A(77F11T1W PAPi?/Cl? JA1QTA11 Dl) T/D DOCWAIT A/Y'CCC T/1 AM FDf1C1nA1 rf)AITDnl AJrACI iDC * TO PROHIBIT THE UNDESIRABLE USE OF AN EROSION CONTROL MEASURE BY 7HE PUBLIC. DD TEMPORARY DIVERSION DIKE 3.09 APPLICABLE TO ANY CONTROL MEASUIRE OR SERIES OF MEASURES WHICH CAN BE CONSIDERED UNSAFE BY VIRTUE OF P07EN77AL ACCESS BY 7HE PUBLIC. 3.02 CONSTRUCIION ENTRANCE.• ST l♦[8300`� TEMPORARY SEDIMENT TRAP J. A STABILIZED PAVED CONSTRUCTION ENTRANCE W1IH A WASH RACK LOCATED AT POINTS OF VEHICULAR INGRESS AND EGRESS ON A CONSTRUCTION 517E TO REDUCE 774E AMOUNT OF Q� SEDIMENT BASIN 3.14 MUD TRANSPORTED ONTO PAVED PUBILIC ROADS BY MOTOR VEHICLES OR RUNOFF. CONSTRUCTION ENTRANCES SHALL BEINSTALLED AS SHOWN ON THE PLANS TO REDUCE THE SB AMOUNT SEDIMENT TRANSPORTED ONTTO PUBLIC ROADWAYS lP INLET PR07EC77ON 3.07 105 SILT FENCE: A TEMPORARY SEDIMENT BARRIER COiN51S77NG OF A SYNTHETIC FILTER FABRIC STRETCHED ACROSS AND ATTACHED TO SUPPORNNG POSTS AND ENTRENCHED, TO INTERCEPT AND DETAIN SF SILT FENCE 3.05 SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTRUCTION OPERATIONS IN ORDER TO PREVENT SEDIMENT FROM LEAVING 7HE SITE, AND TO DECREASE 7HE VELOCITY OF SHEET FLOWS AND LOW -TO -MODERATE LEVEL CHANNEL FLOWS THE SILT FENCE BARRIERS CE CONSTRUCTION ENTRANCE 3 02 o SHALL BE INSTALLED DOWN SLOPE OF AREAS WITH MINIMAL GRADES TO FILTER SEDIMENT LADEN RUNOFF FROM SHEET FLOW AS INDICATED. THEY SHALL BE INSPECTED IMMEDIATELY ° AFTER EACH RAINFALL AND MAINTAINED IN ACCORDANCE WITH THE VIRGiNIA EROSION & SEDIMENT CON7ROL HANDBOOK (VESCH). PS PS PERMANENT SEEDING 3.32 3.07 STORM DRAIN INLET PROTEC7I0lVl.• A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM DRAIN DROP INLET OR CURB INLET. TO PREVENT SEDIMENT FROM ENTERING STORM DRAINAGE SYSTEMS ClP CULVERT INLET PR07EC77ON 3.08 PRIOR TO PERMANENT STABILIZA7ION OF 7HE DISTURBED AREA. INLET PR07EC77ON APPLIES WHERE STORM DRAIN INLETS ARE TO BE MADE OPERA77ONAL BEFORE PERMANENT STABILIZATION OF THE CORRESPONDING DISTURBED DRAINAGE AREA. DnC DC DUST CONTROL 3.39 3.09 TEMPORARY DIVERSION DIKE.• A TEMPORARY RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING DISTURBED AREA. TO DIVERT STORM RUNOFF FROM UPSLOPE DRAINAGE AREAS AWAY FROM UNPR07EC7ED DISTURBED AREAS AND SLOPES TO A STABILIZED OUTLET. TO DIVERT SA SAFETY FENCE 3.01 SEDIMENT -LADEN RUNOFF FROM A DISTURBED AREA TO A SEDIMENT -TRAPPING FACILITY SUCH AS A SEDIMENT TRAP OR SEDIMENT BASiN. USE WHEREVER STORMWATER RUNOFF MUST BE TEMPORARY RIGHT-OF-WAY 311 TEMPORARILY DIVERTED TO PROTECT DISTURBED AREAS AND SLOPES OR RETAIN SEDIMENT ON Si7E DURING CONS77?UC7ION. THESE STRUCTURES GENERALLY HAVE A LIFE EXPECTANCY OF 18 DIVERSION MONTHS OR LESS, WHICH CAN BE PROLONGED WITH PROPER MAINTENANCE. 3.13 TEMPORARY SEDIMENT TRAP: A TEMPORARY PONDING AREA FORMED BY CONSTRUCTING AN EAR774EN EMBANKMENT WITH A TABLE 3.39-A ADHESIVES USED FOR DUST CONTROL Water Application Dilution Type of Rate Adhesive (Adhesives Water) Nozzle Gallons/Acre Anionic Asphalt Emulsion 7.1 Coarse Spray L200 Latex Emulsion 12.5:1 Fine Spray 235 Rcsin in Water 4:1 Fine Spray 300 Acrylic Emulsion (Non -Traffic) 7:1 Coarse Spray 450 Acrylic Emulsion (Traffic) 3.5t1 Coarse Spray 350 Source: Va. VSWC STONE OUTLET. TO DETAIN SEDIMENT --LADEN RUNOFF FROM SMALL DISTURBED AREAS LONG ENOUGH TO ALLOW THE MAJORITY OF THE SEDIMENT TO SETTLE OUT. USE BELOW DISTURBED AREAS WHERE THE TOTAL C0N77?1BU77NG DRAINAGE AREA IS LESS THAN 3 ACRES, WHERE 774E SEDIMENT 7RAP WILL BE USED NO LONGER THAN 18 MONTHS, AND IT MAY BE CONSTRUCTED EITHER INDEPENDENTLY OR IN CONJUNCTION WITH A TEMPORARY DIVERSION DIKE. 3.14 TEMPORARY SEDIMENT BASIN: A 7EMPORARY BARRIER OR DAM WITH A CON77ZOLLED STORMWA7ER RELEASE STRUCTURE FORMED BY CONS77?UC7ING AN EMBANKMENT OF COMPACTED SOIL ACROSS A DRAINAGEWAY. TO DETAIL SEDIMENT -LADEN RUNOFF FROM DISTURBED AREAS iN "WET" AND "DRY" STORAGE LONG ENOUGH FOR 174E MAJORITY OF THE SEDIMENT TO SETTLE OUT. APPLIES BELOW DISTURBED AREAS WHERE THE TOTAL CONTRIBUTING DRAINAGE AREA iS EQUAL TO OR GREATER THAN 774REE ACRES, THERE MUST BE SUFFICIENT SPACE AND APPROPRIATE TOPOGRAPHY FOR 774E CONSTRUCTION OF A 7EMPORARY IMPOUNDMENT. 3.18 OUTLET PROTECTION: STRUCTURALLY LINED APRONS OR OMER ACCEPTABLE ENERGY DISSIPATING DEVICES PLACED AT THE OU7LETS OF PIPES OR PAVED CHANNEL SECTIONS TO PREVENT SCOUR AT STORMWATER OUTLETS, TO PROTECT 774E OUTLET STRUCTURE, AND TO MINIMIZE 774E P07EN77AL FOR DOWNSTREAM EROSION BY REDUCING 774E VELOCITY AND ENERGY OF CONCENTRATED STORMWATER FLOWS. APPLICABLE TO 774E OUTLETS OF ALL PIPES AND ENGINEERED CHANNEL SECTIONS. 3.19 RiPRAP: A PERMANENT, EROSION -RESISTANT GROUND COVER OF LARGE, LOOSE, ANGULAR STONE WITH FILTER FABRIC OR GRANULAR UNDERLINING. TO PROTECT THE SOIL FROM THE EROSIVE FORCES OF CONCENTRATED RUNOFF, SLOW THE VELOCITY OF CONCENTRATED RUNOFF WHILE ENHANCING 774E POTENTIAL FOR INFIL.7RAT70N, AND TO STABILIZE SLOPES WI774 SEEPAGE PROBLEMS, AND/OR NON -COHESIVE SOiLS USE WHEREVER SOIL AND WATER INTERFACE AND THE SOIL CONDITONS, WATER TURBULENCE AND VELOCITY, EXPECTED VEGETATIVE COVER, ETC., ARE SUCH THAT THE SOIL MAY ERODE UNDER THE DESIGN FLOW CONDITIONS 3.31 TEMPORARY SEEDING: THE ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY SEEDING emu• LBS WITH APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS TO REDUCE EROSION AND t;EllERAI =K (3:1 OR R SEDIMENTATION BY STABILIZING DISTURBED AREAS THAT WILL NOT BE BROUGHT TO FINAL GRADE FOR A PERIOD OF MORE THAN 30 DAYS. TO REDUCE DAMAGE FROM SEDIMENT AND KENTUCKY 31 FESCUE 128 LBS, RUNOFF TO DOWNS77?EAM OR OFF-S17E AREAS, AND TO PROVIDE PROTEC7ON TO BARE SOILS RED TOP GRASS 2 LBS. EXPOSED DURING CONSTRUCTION UNTIL PERMANENT VEGETATION OR OTHER EROSION CONTROL SEASONAL NURSE CROP 20 LBS. MEASURES CAN BE ESTABLISHED. 150 LBS 3.32 PERMANENT STABILIZATI: ON SEASONAL NURSE CROP 774E ESTABLISHMENT OF PERENNIAL VEGETATIVE COVER ON DISTURBED AREAS BY PLAN77NG FEBRUARY 16 THROUGH APRIL ANNUAL RYE SEED. TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM DISTURBED AREAS. TO MAY 1 THROUGH AUGUST 15 FOXTAIL MILLET PERMANENTLY STABILIZE DISTURBED AREAS IN A MANNER THAT iS ECONOMICAL, ADAPTABLE TO AUGUST 16 THROUGH OCTOBER ANNUAL RYE S17E CONDITIONS, AND ALLOWS SELECTION OF 774E MOST APPROPRIATE PLANT MA7ERIALS. TO NOVEMBER THROUGH FEBRUARY 15 'HINTER RYE IMPROVE WILDLIFE HABITAT. TO ENHANCE NATURAL BEAUTY. UPON COMPLETION OF CONSTRUCTION AC77W77ES, ALL AREAS WILL RECEIVE A PERMANENT VEGETATIVE COVER. CONSTRUCTION NOTES: DUST CONTROL: 1. LIME AND FERTILIZER NEEDS SHALL BE DETERMINED BY SOIL REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING, DEA40LI77ON AND TESTS AND APPLIED IN ACCORDANCE WITH VESCH STD. 3.32. CONSTRUCTION AC711477ES TO PREVENT SURFACE AND AIR MOVEMENT OF DUST FROM EXPOSED SOiL SURFACES AND REDUCE THE PRESENCE OF AIRBORNE SUBSTANCES WHICH MAY 2. SEEDINGS TO BE MULCHED IMMEDIATELY UPON COMPLETION PRESENT HEALTH HAZARDS, TRAFFIC SAFETY PROBLEMS OR HARM ANIMAL OR PLANT LiFE. OF SEED APPLICATION, IN ACCORDANCE W/ VESCH STD 3.35. DUST CON77?OL MEASURES SHALL BE EMPLOYED TO PREVENT SURFACE AND AIR MOVEMENT OF DUST DURING CONSTRUCTION. MEASURES EMPLOYED SHALL BE IN ACCORDANCE W17H 774E PS PERMANENT SEEDING SCHEDULE VESCH EROSION CONTROL NOTES ES-1: UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFiCA 77ONS OF THE WRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND WRGINIA REGULA77ONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULA TIONS ES-2. THE PLAN APPROVING AUTHORITY MUST BE N077FiED ONE WEEK PRIOR TO 774E PRE-CONSTRUC7ION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. ES-3: ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP iN CLEARING. ES-4: A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES ES-5. PRIOR TO COMMENCING LAND DISTURBING AC77VI77ES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING BUT NOT LIM17E-D TO, OFF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AU7HORITY. ES-6: THE CONTRACTOR IS RESPONSIBLE FOR iNSTALLA77ON OF ANY ADD177ONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. ES-7.•ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL 77MES DURING LAND DISTURBING AC77W77ES AND DURING SiTE DEVELOPMENT UN77L FINAL STABILIZATION IS ACHIEVED. ES-8: DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED WATER FILTERING DEVICE. ES-9. THE CONTRACTOR SHALL INSPECT ALL EROSION CON7ROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFEC77VENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. .EROSION CONTROL NOTES 1. 774E PLAN APPROVING AUTHORITY MUST BE N077FIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO 774E COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. 2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CON37RUC7ED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICA77ONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS J. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP iN CLEARING 4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAIN SHALL BE MAINTAINED ON THE 517F AT ALL TIMES 5 PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES iN AREAS 077HER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF-Si7F BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY 7HE PLAN APPROVING, AUTHORITY. 6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLA77ON OF ANY ADD7I77ONAL EROSION CON7ROL MEASURES NECESSARY TO PREVENT EROSION AND SEDiMIENTA77ON AS DE7ERMINED BY THE PLAN APPROVING AUTHORITY. Z ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CO)N77?OL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING Si7E DEVELOPMENT UN77L FINAL STABILIZATION IS ACHIEVED. 8. DURING DEWA7ERING OPERATIONS, WATER WILL BE PUMPED INTO AIN APPROVED FILTERING DEVICE. 9. 7HE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF PRODUCING RAINFALL EVENT ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF 774E EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. 10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA, 11. ALL WAS7F MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE. AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOID, RUBBISH, AND OTHER DEBRIS 12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED W17HIN 7 DAYSS OF COMPLETION PER ZONING ORDINANCE SECTION 5.1.28. 13. ALL INERT MATERIALS SHALL BE 7RANSPOR7ED IN COMPLIANCE WI'7H SECTION 13-301 OF 774E CODE OF ALBEMARLE. 14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LiMiTED TO THE HOURS OF 7-OOAM TO 9:OOPM. 15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAN MAINTAINS LATERAL SUPPORT, OR ORDER TO MINIMIZE ANY HAZARD TO PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC STREET BECAUSE O SLIDES, SINKING, OR COLLAPSE. 16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAiNTAiN.f, REMOVE OR CONVERT TO PERMANENT STORMWATER MANAGEMENT FACILITIES WHERE APPLICABLE ALL EROSION 0 774E SALE OF ANY LOT CONTROL MEASURES REQUIRED BY THIS PLAN REGARDLESS F , UNIT, BUILDING OR OTHER PORTION OF THE PROPERTY. 1 Z 7EMPORARY STABIUZA77ON SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING is TO BE AT 75 LBS/ACRE, AND IN 774E MONTHS OF SEP7EMBER TO FEBRUARY TO CONSIST A 50/50 MIX OF ANNUAL RYEGRASS AND CEREAL WN7ER RYE, OR IN MARCH AND APRIL TO CONSIST OF ANNUAL RYE; OR MAY THROUGH AUGUST TO CONSIST OF GERMAN MILLET STRAW MULCH IS TO BE APPLIED AT 80LBS1100SF. AL7ERNA77VES ARE SUBJECT TO APPROVED BY 7HE COUNTY EROSION CON7ROL INSPECTOR. 18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH. AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED AT 9OLBS/1000SF, INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. FERTILIZER SHALL BE APPLIED AT 1000LBS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT MiX. PERMANENT SEEDING SHALL BE APPLIED AT 18OLOS/ACRE AND CONSIST OF 959 KEN7UCKY J1 OR TALL FESCUE AND 0-5X PERENNIAL RYEGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS TO BE APPLIED AT BOLBS/100SF. AL7ERNA77VES ARE SUBJECT TO APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR. 19. MAINTENANCEALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH RAINFALL. ANY DAMAGE OR CLOGGING TO STRUCTURAL MEASURES iS TO BE REPAIR IMMEDIATELY. SILT TRAPS ARE TO BE CLEANED WHEN 5OX OF THE WET STORAGE VOLUME IS FILLED WITH SEDIMENT. ALL SEEDED AREAS ARE TO BE RESEEDED WHEN NECESSARY TO ACHIEVE A GOOD STAND OF GRASS. SILT FENCE AND DiVERSiOW DYKES WHICH ARE COLLEC77NG SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED ,AND REPAIRED IMMEDIATELY. 20. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE REMOVED W77HIN 30 DAYS OF FINAL S17E STABILIZATION, WHEN MEASURES AiRE NO LONGER NEEDED, SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR. 21. 7HIS PLAN SHALL BE VOiD IF THE OWNER DOES NOT OBTAIN A PERMIT WITHIN 1 YEAR OF THE DATE" OF APPROVAL. (WATER PROTECTION ORDINANCE SEC77ON 17-204G) 22. PERMANENT VEGETATION SHALL BE INSTALLED ON ALL DENUDED AREAS W17HIN NINE (9) MONTHS AFTER THE DATF THE LAND DISTURBING AC77WTY COMMENCED. (WATER PROTECTION ORDINANCE SECTION 17-207B) SOIL DESCRIPTION 71B - RABUN CLAY LOAM-2X TO 77. SLOPES SOIL IS WELL DRAINED, WITH MORE THAN 80 INCHES TO THE WATER TABLE. MADE FROM RESIDUUM WEATHERED FROM GREENSTONE, THIS SOIL HAS CONVEX DOWN AND ACROSS -SLOPE SHAPE. NO FREQUENCY OF PONDING OR FLOODING, MODERATE WA TER CAPACI TY, AND MODERATEL Y HIGH TO HiGH KSA T. RABUN CLAY-7Z TO 15Z SLOPES, SOIL IS WELL DRAINED, MODERATELY 72C3 - HIGH TO HIGH KSA I,, MORE THAN 60 INCHES TO THE WATER TABLE, NO FREQUENCY OF PONDING OR FLOODING, MODERATE WATER CAPACITY, MADE FROM RESIDUUM WEATHERED FROM GREENSTONE. RABUN CLAY-15,%v TO 257v SLOPES, SOIL IS WELL DRAINED, MODERA TEL Y 72D3 -HIGH TO HiGH KSAT, MORE THAN 80 INCHES TO THE WATER TABLE, NO FREQUENCY OF PONDING OR FLOODING, MODERATE WATER' CAPACITY, MADE FROM RESIDUUM WEATHERED FROM GREENSTONE, NO SCALE 1. SET POSTS AND EXCAVATE A 4"X4" 2. STAPLE WIRE FENCING TO THE POSTS. 3. ATTACH 774E FiLTER FABRIC TO (STD. & SPEC. 3.32 OF VIRGINIA EROSION & TRENCH UPSLOPE ALONG THE LINE THE WIRE FENCE AND EXTEND SEDIMENT CONTROL HANDBOOK, 3RD ED.) OF POSTS 1T INTO THE TRENCH. F= FAeW ZNMMCM 8' COMPACTED IWIL 8• YIIi 0lO][ 'I I I I i-Ili _ 111�TIi=1I I -I { I� =TL(I(Ii k-Ti1=- .rlIlTiln�ifa�i i 1 n t TlI 1r = TIC. =l�1 omkoug 1=1 �- DD TEMPORARY 24" DIVERSION BERM SILT FENCE sF (WITH WIRE SUPPORT) NO SCALE 4. BACKFILL AND COMPACT THE EXCA VA TEO SOiL. FLOW EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. EROSION CONTROL NOTE_ S & NARRATIVE DESCRIPTION OF EROSION & SEDIMENT PURPOSE,• CONTROL MEASURES: THE PURPOSE OF THIS LAND -DISTURBING ACTIVITY iS TO CREATE A 93 LOT SUBDIVISION. THE TOTAL ACREAGE' TO BE DISTURBED WITH THiS PLAN iS 11.85 ACRES EROSION AND SEDIMENT CONTROL MEASURES,• EXiSTINO SITE CONDITIONS: 174E EXISTING SITE IS A WOODED HILLY PARCEL. THERE ARE TWO EXISTING HOUSES THE SITE 1S GENERALLY IT iS ANTICIPATED THAT A CONSTRUCTION ENTRANCE, TEMPORARY DIVERSION WELL DRAINED NTH SOME CRITICAL SLOPES EROSION AND SEDIMENT CONTROL MEASURES HAVE BEEN DIKES, RIGHT OF WAY DIVERSION, SEDIMENT TRAPS AND BASINS, OUTLET DESIGNED) TO CONFORM TO THE EXISTING Si7E SLOPE AND PROTECT THE ADJACENT PROPERTIES PROTECTION, INLET PROTECTION, AND SILT FENCE KILL BE INSTALLED TO ADJACENT AREAS: CONTROL SURFACE DRAINAGE. TEMPORARY SEEDING WILL BE USED IMMEDIATELY THE SiTE IS POS177ONED BETWEEN SCOTTSVXLE ROAD AND AVON STREET EXTENDED. AVINITY 1 IS WEST OF FOLLOWING ALL LAND DISTURBANCE AC77W77ES. TEMPORARY STOCKPILE AREAS THE SITE.. KAPPA SIGMA FRATERNITY HEADQUARTERS BORDERS THE S17E ON THE EAST. RESIDEN77AL LAND IS WILL BE MAINTAINED FROM TOPSOIL THAT WILL BE STRIPPED FROM AREAS TO BE NORTH AND SOUTH OF THE SITE GRADED AND STORED FOR LATER SPREADING, STOCKPILE LOCATIONS SHALL BE OFFSiTE' LAND DISTURBANCE: THE SiTE WILL 77E INTO THE EXISTING ROADS OF AWNiTY 1. THERE iS ALSO MINIMAL OFFSI7E GRADING ALONG ON S17E AND SHALL BE STABILIZED WITH A TEMPORARY VEGETA7VE COVER. THE SOUiTN BORDER INTO THE PEBBLE DRIVE ROW. PERMANENT SEEDING WILL BE PERFORMED FOR ALL AREAS WHICH WILL NO C8i7 AREAS.' LONGER BE EXCAVATED AND WHERE CONSTRUCTION AC77W77ES HAVE CEASED. CRITICAALL SLOPES ON -SITE WILL BE PROTECTED. CARE WILL BE TAKEN TO PREVENT THE EROSION AND PERMANENT SEEDING SHALL ALSO BE PERFORMED FOR ALL DENUDED AREAS SEDiMENTTATION OF THE EXIS77NG GRADE AND TO PR07ECT NEIGHBORING PROPERTIES WHICH WILL BE LEFT DORMANT FOR A YEAR OR MORE. SELEC77ON OF SEED MIXTURE WILL DEPEND ON THE 77ME OF YEAR APPLIED. TEMPORARY SEEDING SOILS, • SEE SOILS BOUNDARIES ON THE EROSION AND SEDIMENT CONTROL PLAN PHASE 1 SHEET, AND DESCRIPTIONS WiLL BE PERFORMED FOR ALL DENUDED AREAS WHICH KILL BE LEFT DORMANT ON THiS SHEET. FOR MORE THAN SEVEN DAYS THESE AREAS SHALL BE SEEDED WITH FAST SEQUENCE OF CONSTRUCTION: 1. N0771FY ALBEMARLE COUNTY TO SCHEDULE A PRE -CONSTRUCTION MEE77NG AS REQUIRED. GERMINATING VEGETA7ION IMMEDIATELY FOLLOWING GRADING OF THOSE AREAS 2. NO IEROSION CON7ROL MEASURES MAY BE REMOVED DURING THE CONSTRUCTION PROCESS WITHOUT THE SELEC77ON OF SEED MIXTURE WILL DEPEND ON THE 77ME OF YEAR APPLIED. APPIROVAL FROM THE INSPECTOR ON THE PROJECT. J. INSTALL THE PAVED CONS77?UC770N ENTRANCE WiTH WASH RACK AS SHOWN ON 774E PLANS 3.01 SAFETY FENCE - SAFETY FENCE WiLL BE INSTALLED AROUND ALL COMISTRUCHON ENTRANCE TO BE INSTALLED WHERE CONSTRUCTION VEHICLE ROUTES INTERSECT PAVED PROPOSED SEDIMENT BASINS AND SEDIMENT TRAPS PUBILIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY (VEHICULAR) 3.02 CONSTRUCTION ENTRANCE - ONE CONSTRUCTION ENTRANCE SHALL BE TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD SURFFACE, 774E ROAD SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE INSTALLED AT WES7NALL DRIVE. THIS WILL BE THE ONLY POINT OF INGRESS REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPORTING TO A SEDIMENT CONTROL AND EGRESS TO THE SITE. CARE WILL BE TAKEN TO PROTECT ADJACENT DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS ROADWAYS FROM TRANSFER OF SEDIMENT. MANINER. INSTALL THE WASH RACK UPHILL FROM PROPOSED SEDIMENT BASIN #1. ACSA WILL DETERMINE J.05 SILT FENCE- SiLT FENCE WILL BE PLACED ON 774E DOWNSTREAM SiDE OF 774E APPROPRIATE METHOD OF SUPPLYING THE WASH RACK. PARKING AND CONSTRUC770N ENTRANCE AREAS SHALL BE CLEARED OF ALL VEGETATION, ROOTS, OR 07HER OBJEC77ONABLE MATERIALS BEFORE DISTURBANCE WHERE N07ED ON THE PLANS CONSTRUCTION ROAD STABILiZA77ON IS INSTALLED. 3.07 STORM DRAIN INLET PROTECTION- 1P WILL BE INSTALLED ON EACH 4. INSTALL THE iN177AL CONSTRUCTION MEASURES AS SHOWN ON THE PHASE l EROSION CONTROL PLAN PROPOSED INLET AS SHOWN ON 774E PLANS SHEETS. THIS INCLUDES 774E SEDIMENT BASIN, SEDIMENT TRAP, SILT FENCE, ROW DIVERSIONS DIVERSION 3.09 TEMPORARY DIVERSION DIKE- DIVERSION DIKES WILL BE USED AROUND THE DIKES, AND DRAINAGE PIPES SHALL ALSO BE INSTALLED AT THIS TIME. STABILIZATION MEASURES SHALL PERIMETER OF SITE DISTURBANCE WHERE SHOWN ON THE PLANS TO DIRECT BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES, AND DIVERSIONS IMMEDIATELY AFTER RUNOFF TO ON -SITE SEDIMENT CONTROL FACIL177ES. INSTALLATION. MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST 57EP WITH SHALL BE MADE FUNC7ONAL BEFORE UPSLOPE LAND DISTURBANCE 3.13 TEMPORARY SEDIMENT TRAP- TEMPORARY SEDIMENT TRAPS WILL BE ANY' LAND DISTURBANCE AC77WTY AND INSTALLED WHERE SHOWN ON THE PLANS TAKES PLACE. 5. INSTALL ANY REMAINING EROSION CONTROL ITEMS AS SHOWN ON 774E PHASE i EROSION CONTROL PLAN. J. 14 TEMPORARY SEDIMENT BASIN- TEMPORARY SEDIMENT BASINS WILL BE 6. ONCE ALL THE EROSION CONTROL 17EMS HAVE BEEN INSTALLED AS SHOWN ON THE PHASE I EROSION INSTALLED WHERE SHOWN ON THE PLANS CONUROL PLAN AND THE INSPECTOR HAS APPROVED THE EROSION CONTROL MEASURES, 774E CONTRACTOR 3.18 OUTLET PROTECTION- TO BE PROVIDED AT 774E OUTFALL OF DRAINAGE CAN BEGIN GRADING OPERATIONS PIPES WHERE SHOWN ON PLANS Z ROUGH GRADE THE Si7E- TO THE CONTOURS SHOWN ON THE EROSION CONTROL PLAN. 8. PERMANENT OR TEMPORARY SOiL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN 3.19 RIPRAP- RIPRAP SHALL BE INSTALLED AS OUTLET PROIEC77ON WHERE DAYS AFTER FINAL GRADE IS REACHED ON ANY POR77ON OF THE S17E: TEMPORARY SOIL STABILIZATION SHOWN ON THE PLANS SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL 3 TEMPORARY SEEDING- TEMPORARY SEEDING SHALL 8E APPLIED WHERE REMAIN DORMANT (UNDISTURBED) FOR LONGER 774AN 30 DAYS. PERMANENT STABILIZA77ON SHALL BE SHOWN ON THE PLANS APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. 3.32 PERMANENT SEEDING- PERMANENTLY SEEDING SHALL BE APPLIED WHERE 9. INSTALL THE CONSTRUC77ON MEASURES AS SHOWN ON THE PHASE ll EROSION CONTROL PLAN SHEETS SHOWN ON THE PLANS MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP WI7H ANY LAND 3.39 DUST CONTROL- DUST CON7ROL SHALL BE APPLIED THROUGHOUT THE SITE DISTURBANCE AC77VITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLAICE. THE CLUBHOUSE AND DRY DETENTION BASIN WILL NOT BE INSTALLED UN77L AFTER UPLAND WHERE SHOWN ON THE PLANS AREAS ARE SUFFICIENTLY STABILIZED AND SEDIMENT BASIN 1 WALLS CAN BE INSTALLED TO OBTAIN THE FINAL DETENTION BASIN FOOTPRINT. THE PLUNGE POOL RISER AND BARREL OUTFALL WILL NOT BE STORMWATER MANAGEMENT- INSTALLED UN77L UPLAND AREAS ARE STABILIZED AND SEDIMENT TRAP 2 CAN BE CONVERTED. STORMWATER RUNOFF QUANTITY WILL BE 7REA7ED ON -SITE THROUGH TWO DRY 10. INSTALL THE UTILITIES, CURB AND GUTTER, AND ROADS INLET PR07E'CTION SHALL BE INSPECTED AFTER DETENTION BASINS 774E PROJECT WiLL PRESERVE OPEN SPACE AND ADD177ONAL EACH RAINFALL EVENT AND REPAIRS SHALL BE MADE AS NEEDED. IF 774E STONE FILTER BECOMES STONE MUST WATER QUALITY SHALL BE TREATED THROUGH THE PURCHASE OF CREDITS SEE CLOGGED WITH SEDIMENT SO THAT iT NO LONGER ADEQUATELY PERFORMS ITS FUNC77ON, THE BE PULLED AWAY AND CLEANED AND/OR REPLACED. INSTALL ANY REMAINING EROSION CONTROL I7FMS STORMWATER MANAGEMENT PLAN SHEETS AS SHOWN ON THE PHASE Il EROSION CONTROL PLAN. 11. UPON INSPECTOR APPROVAL, THE SEDIMENT BASIN 1 WALLS MAY BE INSTALLED TO ALLOW THE CLUBHOUSE AND SLOPE BEHIND THE CLUBHOUSE TO BE REGRADED, AND THE DRY DETENTION BASIN FINAL F007PRINT TO BE INSTALLED. 12, ONCE PHASE ll OF CONSTRUCTION IS COMPLETE, THE 517E IS STABILIZED AND THE INSPECTOR HAS GIVEN APPROVAL, THE CONTRACTOR CAN REMOVE 7HE EROSION CONTROL MEASURES, NO ITEM SHALL BE REMOVED UNLESS 174E UPSTREAM AREAS ARE STABILIZED AND THE INSPECTOR GIVES PERMISSION. 13. MAINTAIN ALL EROSION CONTROL MEASURES AS SPECIFIED iN THE WRGINIA EROSION AND SEDIMENT MAINTENANCE.' CONTROL HANDBOOK, REMOVING ONLY WHEN APPROVED BY THE LOCAL PROGRAM ADMINISTRATOR IN IN GENERAL, DURING CONS7RUC7ION 774E RLD OR CONTRACTOR ON -SITE WILL CHECK ALL EROSION AND SEDIMENT CONTROL MEASURES DAiLY AND AF7ER EACH ACCORDANCE WITH THE WRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. 14. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER SIGNIFICANT RAINFALL. MONITORING REPORTS KILL BE REQUIRED FROM THE RLD IF FINAL S17F STABILIZA77ON OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS NEEDED. SPECIFIC AT7EN77ON WILL BE GIVEN TO 774E FOLLOWING ITEMS: 07HERWISE AUTHORIZED BY THE LOCAL PROGRAM ADMINISTRATOR. TRAPPED SEDIMENT AND 774E DISTURBED a. SEDIMENT BASINS AND/OR TRAPS WILL BE CLEANED AND MAINTAINED IN SOiL AREAS RESUL77NG FROM THE DISPOSI T70N OF TEMPORARY MEASURES SHALL BE PERMANENTLY ACCORDANCE W77H THE VIRGIN tA EROSION & SEDIMENT CONTROL HANDBOOK. STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTA770N. b, ALL INLET PROTEC7ON AND GRAVEL OUTLETS WILL BE CHECKED REGULARLY FOR SEDIMENT BUILDUP THAT WILL PREVENT PROPER DRAINAGE. IF THE GRAVEL iS CLOGGED BY SEDIMENT, THE GRAVEL WILL BE REMOVED AND CLEANED, OR IT WILL BE REPLACED. c. ALL SILT FENCE BARRIERS WILL BE CHECKED REGULARLY FOR UNDERMINING OR DETERIORATION OF THE FABRIC AND REPAIRED AS REQUIRED. SEDIMENT SHALL BE REMOVED WHEN THE LEVEL OF SEDIMENT DEPOS177ON REACHED HALF WAY TO THE TOP OF THE BARRIER. d. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO SEE THAT A GOOD STAND IS MAINTAINED. AREAS SHOULD BE FER77LIZED AND RESEEDED AS NEEDED. IN CASE OF EMERGENCY, THE PRIMARY CONTACT FOR THE PROJECT WILL BE THE RLD OR CONTRACTOR ON -SITE. THE CONTRACTOR WILL BE DETERMINED AT THE TIME THE CONTRACT IS AWARDED. IN ADD177ON THE OWNER MAY BE CONTACTED, MR. ALAN TAYLOR. UPON COMPLETION OF THE PROJECT, THE OWNER WILL BE RESPONSIBLE FOR S17E MAINTENANCE. - -CURB BR INLET ---------,- CONCRETE BLOCK MIRE SCREE` GRAWL* RL7ER OR 15 COARSE AGGREGATE. BLOCK & GRAVEL CURB INLET Q IP ,SEDIMENT FILTER o7-g NO SCALE La I -Ld SECTION A -A PIPE OUTLET TO FIAT AREA MOTH NO DEFINED CHANNEL La n r f d IPLAN SEC77ON A -A oP PIPE OUTLET CONDITIONS 3.�s-i NO SCALE ALBB4ARLE COUNTY CONSiRUCT1ON ENTRANCE rIF7-70V MIN M9ATor CGIRSE--.vc 5rulc PAVFAIFM �! SIDE ELEVATION 1 AGGREGATE eA E EwsnNG GROUND A70' MIN IX. CURB OR A�rsti7 vA`w rwsrnwac EDGE OF PAVi i 12 MIN. EXISTING u PAVEAEPIT I -POSIIMe om"" ON TO SEDUM MWMLYA WIDTH AT TA -PM D = OESIGtt WATER ELEVATION IS 4.0' PLAN VIEW MUST E (FEND FULL WIDTH OF INGRESS AND EGRESS OPERATION SET 1 I/r WATER H'n"T WTH FROST �12' )AN .� PROOF HIURANT 3 ABOVE GRADE AND 4 � �. OFF EDGE OF PAYEhAEHT. SECTION A -A a NOTE. A MNt41 UN WATER TRAP OF I' IS REQUIRED WITH A MINIMUM WASH HOSE ON. OF 1.5' rf PAINED 7LWP COMT &l'TR 1\19$ r Tans: TABLE 3.31•B ACCEPTABLE.TEMPORARY SEEDING PLANT MATERIALS 'QUICK REFERENCE FOR ALL REGIONS' Ylapting Dates Sept. � -Feb, 15 Feb. 16 - Apr.30 May 1- Aug 31 Source. Va. DSWC S eo dies 59/50 Mi.; of Annual Ryegr ass (Lolium mull %rum Cereal (Winter) Rye (Secale cereale) Annual Ryegrass ( ium yati-florumj Oermau Millet (Setarlit italica) Rate lbs. acre 50 100 60 - .100 50 op' l SCOOT R. COLLINS No. 35791 �S11oNAL E� z w z � o LU o o z O w CD w o V, Z O ¢ a •-' w a w ca z 0 Q (/\ w a w w to � Lul'_"i M n Ul Z 0 N N W J W 0 U 1 W E" W �J U) J_ Q E-- W o z 0 w �Ld N w W' 1 z llCD z - �w _ o �z s J c) L.L ° NN a o L� o� C0 s= r 0 zL o N o 'L o s 's N � N ti F �x U � zo o c� N � U -o ID 0 o z0 0 I= +-• W N V Q z -� w � Ww o z_ � ) 7 O L(z -, w V)06 z J � Z J 0_ 0 2 L U U 0 o� a� � o W U � o x a U N v� s� L O Q � v � U ,� o co v V w � .� o Q) U > ° Q) JOB NO. 092033 �s ' SCALE 1"=50 N oQ aQ_ v � SHEET NO. 7 (D T � o } \ •� a ; . , \,. ,: � r sa � ,� �N.,� _ ,�. LEGEND LEGEND ,\ } � � , \'Q2' t- � { r ''•', %� : ', ,: �, / 1°/ / / /,/ / _ '\ �. r `:., �e �' ! .' - \„/. /} j o � / \ �. �,./ \�� \�>=�,( � � , / / / , / / / ! j, --� �`� ' \� --�, - : / ;' / � � ----------- LIMITS OF LAND DISTURBANCE SILT FENCE PER VESCH 3.05 1� / z _, \ >� r /• /% \ `;:. / (/1 1 \ DIVERSION DIKE , . \ / j'� �!� , ///t /, / \ . w� ,. 1 R POSED SAFETY FENCE SAF ss SUPER SILT FENCE PER VESCH 3.05 / + ' RY /� ,//,/� `'.'� . % / 1 J < -- '- / / Q �� ■ ■ BOUNDARY LINE n 1 / j1- ' — - _: \ i_ DD DIVERSION DIKE PER VESCH 3.09 SCO`I P R. COLLINS Ilk- c � nor \ -�„} '� �'�.::� � / �:>.� � �� �°� � /%.'// / / � , .. � � T r / � � / \ SILT FENCE O �l//' SW FOREST & OPEN SPACE PRESERVATION / '' \:;:',•` \} \. .,\ H,'. `. �,' ' • ( ... /. ' / �, / ' �r f / •$' is `,,..,�/ .:.... ,' #. / / . "-. •1',.,.;.._/ �,i- -- — ---- DIRECTION OF FLOW HALL REMAIN OUTSIDE LIMITS sT SEDIMENT TRAP PER VESCH 316 U N 35791 1 , 653.75 PROPOSED \"(� `~ / -� 1 } /, `:' OF DISTURBANCE POS CONTOUR > Q� f / / / , �1 } } 4 % 1- /, a _ % 4 _ \ CE CONSTRUCTION ENTRANCE PER VESCH 3.02 r// I t \ %``� \ \ DRAINAGE DIVIDE j JJ `-- r` »C \.ram ' 'P ' LIMITS OF DISTURBANCE _ ro / ! / / / /%i ` ✓ ?. Ir•- . .':'. :;i / B ,\� ��'� \ _ l /\ C Nth) 1' \ ✓ J ` } ¢ ` \I\;�( ors _, . /j _ / '/� ,� \. / % `=1171 CULVERT INLET PROTECTION OP ' C'�`-' , ^.� ':\\ > . , \ >z { \, •'� % _ �"'. _/ � _ `� r� �_ OUTLET PROTECTION PER VESCH 3.18 \ ,, "5-„ \; < , ti<„ '\ .; _..\/..... / / \�`'/- .i t •.z ` /� J ,fir / . --_ i - / % < �, / ;\ S //, / . / / % ✓ /,. \; CULVERT INLET PROTECTION PER VESCH 3.08 SOILS LINE l SOIL TA ILIZA N MATTING / / . '`` . \dr � � - -�; '* ,�; r' — _ •r i% / , ,. :� r \ _._. —. B S 8 TIO VESCH 3,36 ',rDRAINAGE WAY O , J ems\ \ lP v a rti ti, Ca r c n 1 �Qukrirl PROPOSED SAFETY FENCE ___ � � t• � P, .. .._ . NSTALL SIGNS N WARNING. e \ .. ..: ... .� QUICK SAND KEEP i49.. � Q POUT' 3.a �--_...._ .4ST1P1E. {,...-...s.,. ,,.....:........... Set : uikn ,..,.,.,,,.:.,:,,..........,,...... :. 40 �l -- -- --_PROPOSED 55' EARTHEN----- -- _ --, - EMERGENCY SPILLWAY l \ . ELEV6 49 .33 / t 1 OF DAM-497.50 \\ ' \ / / / / / / ;��.,✓r \'/� < ';1%.:..., \ I ` .. % / : —/ , _ / , �!�.^l / -tom' . / \ a _ -',_�-.._--•-.-.-•.. ! �' _ '•\ PAVED r - PROPOSED ! E O .w r / CONSRUQTION ENTRANCE / -%-"' .''-' Y ` / ,/ I i '-' / \\ `--- .�_, .� S� „'ram � ✓< \PROPOSEED 18 CLII o ,RCP BARREL \ \ =88'; S=0.5% IN=488.44 ' �INV yv S� _ -IhLV OUT.=488,.00 ROW DIV R PROPOSED 8" CL. III RCP RISER -(PE _ \ \ / \ RIM=495..33 \\ \ \ ..�N \ \ \ ST©NE,OUTFALL INTO BASIN ;\¢ 5'W'x58'Lx2'D (TYP.) \'•.\ `` \ \~ �-'~;\` \\\`,, \ \ DD PROPOSED 24 DIVERSION BER I MW 4ANI u.t yP�v�AF z 0 '2tA ! o �P..4FIL d z w m Z O ta'a:�i:, oN o o w 4 tF2t1C.11 t4" ki bT r'Al R ACCE ,rtt:i z 0 J ( % � < E rks� �#K.t o z Eq ern.. - PA1� 401 w „'� 0 LU w 1] U5f EXt�"x but L "NtTt L*� *KF t�1�RES�S .�h� �rF�raS� � cw n V) AP r;Wk P4.AN �W/ I.i \ Cait�kattk k1k w#{tl[�! 'ltt lt.►Y ket wtt3t U. c�ctt l �►r,nVirsrut ttt ulruslcO Go au. w ago aa amp �i l \ \ '` `' \ ' ,.. \ \ \\,\ \ Source: Adapted.eram GUnwed Ntasties and Plate 3.01-1 �� bUV�tI # i1► 31 t l X 113pk t etakt3 a. , t�lili�iit It tt f�i 7l. t'r ed. ftOit f— / \ VI)O 1' Rod and Bride Standards caBulla111t El�ttuEt:, tlitrc t?r ,svittric4W seq. SEDIMENT BASIN 1 i \ } ti 1 } I 1 } \ \ \. \\ \ \\ +,�\ t � i. _ o� -- PHASE I 1 o I I \ \ \ y - sVWASH K -- I 1 1 7.95 ACRES I ! /`� / l I ` ` INO OTE. CONTRACTOR SHALL AVCdDdj, �,CTION IN45 � Tc=13.2 min. DD /DRY SWALE LOCKTIONSSl_E 9 c8S IA PROPOSE 24" DIVERSION BER \ EX STRUCTURE ' - _ _ \ \ , l 1 /` / / // / J // \ \'� `'� i 0?\ TO BE REMOVED (TYP):I��' ` f i tY7 FYPE \ LIMITS OF DISTURBANCE I / Xk l / 0�`}` Lij -5 / /- Y•/ \ / t fa,f``'r % / `\� l lJ lO > \ "arw �/} --- "-/ \ `, /l .�.- i..0 < NX 1 / / / l Jp P r f � / / 1 �/ J �r � / SIP G LA UHL L9 Uj / 1 / TO BE REMOVED (). = ' / _ ♦ i \ TYPE i ..I`� / � J` ROPO�E SAFE FENCE, SAF f;, � � ./ g� / ,, _. -� �/ ;,.�'--', -; -''=. �� -= ' ~- .w --- �Q Z ,//':c / / /-_ ' 06P \, � � 0 O EX STRUCTURE / ) I l / ` _ ` 4 LIMITS OF DISTURBANCE �- % - / /' _ \ / l / / _ / / l l PROPOSED 24 DIVERSION �/l _ -- - // ' _ `\ Q. / /- i i \ /TO BE REMIOVEI� (TYP). / / / ) / o / / / " / / ! �� ERM AND 6'X6'X2' RIPRAP //'/ , =19.85 AC. �- ! // ' = //, i i ! - \ OUTLET PROTECTIONf� / / / • / / /' ) 1 = / \\ \/ ' \' ` \ \ ,l l ! 1 / l l / l l '�-5J >.'+,. / ! -%`-Y- ` / ) \ /,/j f / / / / , //' % / / J ('1 ' `.r• f . ! j / / �i i / n . ( z PROPOSED 11,L FEN E � _ l *A SEDIMENT TRAP 2 _ / l .:-•' ,,-�` -'--.,:=" - -- - _ -` l / _ _ , 1 1 -- fit© f - _.� _ W 1.31 PHASE ACRES 1} / i r '%! 1 - _ ✓ r'. - '` �; _w (,�� W I Cw=0.45 } ` } c) 1 ` t ' r- �.- - ;c� -- / r- �i _-< c y :-==" -/ _ / \ _/LU J Tc=9 min. l ,1 i 1 1 1 r �' �'i '- j / �"- - /�- i / J '' / 1 U) 06 / \ AF PROPOSED SAFETY FENCE~\ �` / 1 r . r \ ( / /•' ice- - �' / � . ; - � — _._— / ` ` \ � \ LU W F-1 W PROPOSED $ STONE / �-'/ j_ IR ELEV.=497.00 O ♦ / �. / i iiTQP OF DA =498,.00 �'`J7� l ! i f /. \\ \\ \ \ \ U} Q Z% / l '' r.+` -' � / / / l J / � 1 �' / _� / ! ,. r/.i / j - \� /' � // / / / .l /! j /' � /- \ , �LLJ ~ / PROPOSED 24 DIVERSION BERM /AND 6'X,6'X2' RIPRAP OUTLET PROTECTION PR6POSED SAFETY FENCE ���. 1 s r "WARNING: PROPOSED\ .1 ' /: /✓/ / NSTALL SIGNS \ �p 1 l / QUICK SAND KEEP OUT" ! / / / r ,, SILT F NCE 1 ti + tQ ; , A\� \ ' i� ' r /- - / \ \ \ , {U % ! ♦ i ./ i t ROPC?SED SAF TY FENCE SA J Q / / / THE-"SWM FORESTAND OPEN SPACE EASEMEN F IS SUBJECT T� GUIDANCE SET FORTH BAY DE IN THE \ 1 \ +CV GRAPHIC. P]�ILC,SC'A]LE J I + j I I J J J ���; ';%\ / / % / / j V RGINIA S,TORMWATER MANAGEMENT PROGRAM. THE AREAS WILL REMAIN UNDIS URBED IN\A NATURAL., o / 1 i J y '� �` f / WM FOREST & OPEN SPACE PRESERVATION / % \ \LLJ ao 0 30 ao / tzo zao I / i ) ( / '� �' '/ �, / 'WALL REMAIN OUTSIDE LIMITS / % / VEGETATED STATE EXCEPT FOR -ACTIVITIES AS APPROVED BY THE LOCALS PROGRA AUTHORITY, SUCH AS a �, / J ), f / / / J { ( / / }`� `�' / '' �/ OF DISTURBANC ' ,/ / / % % FORrPST MANAGEIN NT CONTRCiL OF INVASIVE SPECIES REPLANTING AND\REVEGETQTING PA�SIVE\ \ JOB No. % ; i/ /jjj / % /' j / RECREATI0�1 (E.G., TRA,ILS�, AND LIMITED BUSH HOGGING T9 MAINTAIN DESIRED VEGETATIVE COMMU�,,T 092033 / IN FEE`I' -� / / / / ! / / // / // / / / / / BUT NO MORE THAN FOUR TIMES A YEAR). ,\ I - , J / / _ l / i ): / % / / ) ! \ \ I SCALE 1 inCI = 60 ft./ / / / / l / /' /�' —� j� j / .� / / / / / j / `\ \ \ l 1 " = 60' / - - / f / NOTE: ANY FOREST & O!PEN SPACE PRESERVATION AREA THAT WAS PREVIOUSLY\DISTURBED BY THE CONSTRUCTION OF THE AVINITY'I POND (OR DISTURBED WITH THIS CONSTRUCTION) SHALL PE RESTORED SFIEET NO. AING 9EQ BMP SPEC. 4, SUIL'AMENDMENTS. 8 O N 0� SEDIMENT BASIN SB-1 SCALE: 1 " 4Q' VYh \ N, V�. __-PROPOSED SAFETY FENCE NSTALL SIGNS "WARNING: QUICK SAND, KEEP OUT \ PROPOSED 55' EARTHEN -- EMERGENCY SPILLWAY \ \ ELEV.=496.3, \ \ /TOP OF DAM=497.50 PROPOSED 18 CL. III \ '\\ \ f RCP BARREL \ `\ s\. INV IN=488.44 INV OUT=488.00. PROPOSED` ` 8" CL. III RCP RISER P RIM=495.33 \ \ (P SEDIMENT TRAP ST-2 SCALE: 1 "=44' PROPOSED 24" DIVERSION ERM AND 6'X6'X2' RIPRAP t \ UTLET PROTECTION t \ 74, y PROPOSED ILT FENCE 1 l 1 1 ` rr51. 01 C / / / t PROPOSED 8 STONE i j / / / l / j -WEIR ELEV.=497.00 61.! / --TOP, OF DAM=498.00 / . C. 10 PROPOSED 24" DIVERSION BERM AND 6 X61X2 RIPRAP OUTLET PROTECTION _ PROPOSED SAFETY FENCE 1 ( ♦ i / � / NSTALL SIGNS "WARNING: SAF � QUICK SAND, KEEP OUT„ 0 ��. / •�! i , c j ROPQSED,SAFETY FEN E SAF ., SWM FOREST &OPEN SPACE PRESERVATION t ! 4 / / HALL REMAIN OUTSIDE LIMITS ��+♦ s ��f� OF DISTURBANCE i ��r Sediment Basin#1 Design drainage area (acres) basin volumes: (using 2' contour intervals) elevation (ft) contour area (sf) 488.00 1946-0 490,00 2890.0 492: Q0 3975.0 494.00 5200.0 49.6.00 6566.0 497.50 7682.0 wet storage required (cy) (67"QA) dewatering orifice elevation (ft) wet storage provided at this elevation (cy) available volume before cleanout (cy) (min. 34*DA) cleanout elevation (ft) distance from cleanout to orifice (ft) (> 1') dry storage: dry storage required (cy) (67`DA) principle spillway crest (ft) dry storage provided at this elevation (cy) diameter of dewatering orifice (in) diameter of flex ible tubing (in) (orifice+2" ) runoff. 0 (use 0.45 for bare earth) tG (min) 12yr 3-7 Q 2yr 125yr 5.5 Q 25yr available head (ft) diameter riser (in) spillway capacity, Qp (cfs) diameter trash rack (in) barrel length (ft) head on barrel through embankment (ft) diameter of barrel (in) Sediment Trap 2 design drainage area (acres) (<3) trap volumesl I 492.00 494.00 496,00 497.00 bottom of stone weir (ft) 7'95 DESIGN NIG}i WATER (26-YF2. STORM ELEV,} volume (cy) ; 0 MIN 1.01 178.0- • 431.2 DRY " STORAGE .... 770.0 ` WET ' STORAGE 1204.8 : 1600.1 SEDIMENT CLEANOLR POINT C WET " STORAGE REDUCED TO 34 C.Y. ACRE) MIN.1'WISPILLLWAY CREST OF EMERGENCY 2' WITHOUT SPILLWAY RISER CREST CCEACEERING. 532.7 design high water (ft) 496.33 492,60 top of dam (ft) 497.50 532.7 top width of dam (ft) 10.0' 270.3 bottom of basin.(ft) 488.00 490.73 approx. bottom dimensions: 31'x70' 1.87 upstream face slope: 2:1 downstream face slope: 3A 532.7 baffles: NO 495.33 length of flow, L (ft) 120 532.7 effective width, We (ft) 33 5.0 L / We (baffles not required if > 2) 3.60 7.0 collars: YES depth of water at spillway crest (ft) 7,33 0.75 slope of upstream face (ZA) 2:1 12.6 slope of barrel (Sb) 0.50% 22.1 length of barrel in saturated zone (Ls) 44.88 3,6.1 number collars required 2 dimension of collars 4.2`x4.2' 1.00 emergency spillway: YES 48 required capacity (025-0p) (cfs) 21.1. 15-00 bottom width (ft) 55 72 slope of exist channel (ft/ft) 33%Q 88 minimum length of exit channel (ft) 16 8.33 crest of spillway (ft) 496.33 18 431 area (sr)I..._volume(c ... v. ..» 335 0i 8.91 783.01 49.1 .w. 1344.0j 127.0 1662 01 182.5 20056 I` 25041.. ..... ..... .... ( f.. .. I 87 4SEE PLATE CREST OF STONE DRY STORAGE WET STORAGE (EXCAVATED). wet storage provided at this elevation (cy) 91.1 ; slope of wet storage sides ( y µ 21 i 1weir length (ft) (6xD) dry storage 'b P dry storage required (cy) (67*DA) I 87.8 ..__.. , _ .. bottom trap dimensi crest of stone weir i 497.0 Itop of dam elevation dry storage provided at this elevation (cy) 91 1 I6p width of dam (ft) slope of dry storage sides 1 2:1; itop trap dimensions HEN FIL ER'CLOTH \ %L CLEY; AGGREGATE~ -CLASS T R1PRAf' 7. 4 , SCO T R. COLLINSZ� > No. 35791 jONAL H z w Z E 0 LU o � o Z 0 o w m � w C)Z o `_ o W Z En a- LLI 1 Z o w LU �°'■� LU W W I`*. --I M h 5 (-5