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HomeMy WebLinkAboutWPO201400004 Plan - Approved 2014-02-03D a JA V m=A ��l ...... piuupplq. uliln � NI III IIII i Illidl � 911tl111 I II, I II I I I II II li 'V" �. I I i II I. II I I. b I I III II'. I i II VIII IIIA I , �,III III III b i p IIII , Il�llumul;l'� i I I I � �III'�II wilq Illuwl„ qI, III I ul ole '�;I'II P I � III III III ull, I I' Ilial IIIiIILIP'l , l�.11lllib !III' .III m ill I'II IIIiIIL.l0llll. ,III I III tl,pl I i III. ,III !!tlllill . LIII III lnllll , I, ,-IIII '. V.il.11llllal.11li IILIII.II'.IIIJp,II IIJII , i Illli llt i i ,III � 111111,, IIII � i IIID G�IIIIIII:O'lll,lll.11lll Illi i '.I. II III Illi,. 'GIII11Ill.11l�ll.pl I! 6 IIuiluulilRutl III IIII IILIIJII VIII IILII IIJILIII 11!11111 llplll,l GENERAL NOTES: OWNER/DEVELOPER: MARCH MOUNTAIN PROPERTIES LLC CONTACT. DAVE BROCKMAN PLANNING / ZONNING 1005 Heathercroft Circle, Suite 100 OLD TRAIL VILLAGE ------------- Crozet, VA 22932 CELL: (702)-985-9088 r� V da veftld trail village. com PLAN PREPARER: ROUDABUSH, GALE, & ASSOCIATES W 914 MONTICELLO ROAD i 00 J CSI CHARLOTTESVILLE, VA. 22902 TAX MAP PARCEL No: A PORTION OF 055EO-01-00-000A1 ZONING: NEIGHBORHOOD MODEL DISTRICT IN ACCORDANCE WITH PROFFERS 0� OF ZMA-04-024 APPROVED ON SEPTEMBER 14, 2005 USE: BLOCK 28 — 9 SINGLE FAMILY DETACHED UNITS o� 6 SINGLE FAMILY DUPLEX UNITS Z BLOCK 298 — 12 SINGLE FAMILY DETACHED UNITS NQ 4 SINGLE FAMILY DUPLEX UNITS BLOCK 35A — 2 SINGLE FAMILY DETACHED UNITS BUILDING HEIGHT: NOT TO EXCEED 2.5 STORIES DRAINAGE DISTRICT. LICKINGHOLE CREEK WATERSHED: LICKINGHOLE CREEK TOPOGRAPHY. LOUISA AERIAL SURVEYS, AUGUST 2012 DATUM: VERTICAL NAV9 88, HORIZONTAL NAD 8.3 CRITICAL SLOPES: NO CRITICAL SLOPES EXIST WITHIN THE PROJECT LIMITS FLOODPLAIN: THIS PROJECT IS NOT LOCATED WITHIN FLOODPLAIN LIMITS AS SHOWN ON FLOOD q INSURANCE RATE MAP COMMMUNITY PANEL NUMBER 510006.0237 D. JZ EFFECTIVE DATE: FEBRUARY 4, 2005. LANDSCAPING: L NTINGS SCHEDULE AND SPECIFICATIONS NOTES SEE LANDSCAPING PLAN FOR P A , W C rLu AND DETAILS. LOTS 1 THRU 15 OF BLOCK 28, 6 THRU 21 OF BLOCK 29B, AND 8 AND 9 OF BLOCK', 35A EACH CONTAIN A BUILDING SITE THAT COMPLIES WITH SECTION 4.2.1OFTHE ALBEMARLE COUNTY ZONING ORDINANCE. NO EVIDENCE OF A BURIAL SITE WAS FOUND ON THIS PORTION OF PARCEL Al. THIS SITE IS NOT LOCATED WITHIN AN AGRICULTURAL—FORESTAL DISTRICT. THERE WILL BE NO OUTDOOR LIGHTING ABOVE 3,000 LUMENS. STORMWATER MANAGEMENT PLANS 1. 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. 2. PIPE AND RISER JOINTS ARE TO BE WATERTIGHT WITHIN STORMWATER MANAGEMENT FACILITIES. 3. FOR TEMPORARY SEDIMENT TRAPS OR BASINS WHICH ARE TO BE CONVERTED .TO PERMANENT STORMWATER MANAGEMENT FACILITIES; CONVERSION IS NOT TO TAKE PLACE UNTIL THE SITE IS STABILIZED, AND PERMISSION HAS BEEN OBTAINED FROM THE COUNTY EROSION CONTROL INSPECTOR. GENERAL EROSION AND SEDIMENT 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 SPECIFICATIONS OF THE "VIRGINIA EROSION AND SEDIEMNT CONTROL HANDBOOK" AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. ES -2: THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION 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 ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED 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 REVIEWING AUTHORITY. ES -6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN REVIEWING AUTHORITY. ES -7: ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION HAS BEEN ACHIEVED. ES -8: DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE. ES -9: THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH FUNOFF-PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. r i , I ' ! \..• ...:.�\\.,r:� = L `t 'w� / ``f ,( r J• ! /- �':" h/ 7, /it Y.. •" ,r\ %/ �� I ,•\ s ��ys1'€ ._.._-_.._.._.._. _._ \!ir\��\rsr\ t\��\ / 'a�,! � / f� '�£,, 1 , � J/ �,�` i. rim / r / \- tt. l :j°' �l I`•,.,,.,Y�� I�� i''"""".;_ �.,,,1: 1'`r,, i.. /,-\.,� �\\<� `< /\ ...,.? *� 'J /F/ L,;,�� / f,.�f'. \ \ 11•x, ,. ,z"..... ••� - __._'- � � // /: !! i � � u>=; h.•,• .r x.., it .... 1,.,� lµi rl r. �\ / � ` / �' M .J•� ,,€.,,p .� y --1' _�,..t ,i. r... r.•' .., .,r„ �,r.....� •:� t `\; �` � / 1 ,.1.. f l -� , �� �-Jul � •�!: , m., r.. '`1 rz..� s:.,, "'i '"; \ /'�\ Y�`5,...,1 ._J�..._...y � I,. '•r ,,c `✓'`.�K 4 _..� �'�! � I i i i` 1 `tit•_., .._ a,.,..(.,,_.a -..'.. •{ I t `� � , ,...>C�. J>'_..._ �~_.._,. „~,: %.3;=a ). 1 !1� ff/ f f f: "'_--' .—. \, t / \ .,r — •a?....'rf", p �., I,z` •..I...1y.. 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(jo i \' t j x' 1_ \ t \\ i j �..... ......... \ \ i ,-- 1 i , i �€ Rte 250 .� t f _...w III -------- -_- _._...... i;. t t f t— ,.__"cr�c ..ter, ..� -,. t «�", ..,• ,::- l ..,.�___ � ',t .....�_._- —..f ,i3€ € :t VICINITY MAP SCALE: 1 ”=1000 FEET SHEET INDEX SHEET 1 ---------- COVER SHEET SHEET 2 ---------- EXISTING CONDITIONS PLAN SHEET 3 ---------- OVERVIEW & PHASING PLAN SHEET 4 ---------- EROSION CONTROL PLAN PHASE 1 •SHEET 5 ---------- BULK GRADING & STABILIZATION PLAN SHEET 6 ---------- EROSION CONTROL PLAN PHASE 2 SHEET 7 ---------- EROSION CONTROL NOTES & DETAILS SHEET 8 ---------- EC NARRATIVE & OUTFALL PROFILE SHEET 9 ---------- UPPER BALLARD DRAINAGE MAP SHEET 10 -------- UPPER BALLARD POND BMP CONVERSION SHEET 11 -------- TEMPORARY ',SEDIMENT BASIN OUTFALL PROFILE SHEET 12 -------- POND ROUTING & OUTFALL CONDITIONS GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIMENT CONTROL PLANS 1. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. 2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGUCATIONS yr 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. 3. 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 PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES. 5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED 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 AUTHORITY. 6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. 7, ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. B. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE. 9. THE 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 THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. 10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA. 1.1. ALL WASTEMATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS. 12. BORROW OR.WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING ORDINANCE SECTION 5.1.28. 13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 OF THE CODE OF ALBEMARLE. 14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO THE HOURS OF 7:00 AM TO 9:00 PM. 15. BORROW, FILL OR,.WASTE ACTIVITY SHALL BE CONDUCTED IN A'SAFE'MANNER THAT 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 OF SLIDES, SINKING, OR COLLAPSE. 16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR CONVERT TO PERMANENT ';STORMWATER MANAGEMENT FACILITIES, WHERE APPLICABLE, ALL EROSION CONTROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF THE SALE OF ANY LOT, UNIT, BUILDING, OR OTHER PORTION OF THE PROPERTY. 17. TEMPORARY STABILIZATION SHALL, BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE AT 75 LBS/ACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY TO CONSIST A 50/50 MIX OF ANNUAL RYEGRASS AND CEREAL WINTER 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 80 LBS/100SF. ALTERNATIVES ARE SUBJECT TO BE APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR. 18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH. AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED AT 90 LBS/1000SF. INCORPORATED INTO THE TOP 4-6 INCHES OF'SOIL.'FERTILIZER SHALL BE APPLIED AT 1000 LBS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT MIX. PERMANENT SEEDING SHALL BE APPLIED AT 160 LBS/ACRE AND CONSIST'OF 95% KENTUCKY 31 OR TALL FESCUE AND 0-5% PERENNIAL RYEGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS TO BE APPLIED AT 80 LBS/1000 S.F.. ALTERNATIVES ARE'SUBJECT TO BE APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR. 19. MAINTENANCE: ALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH RAINFALL. ANY DAMAGE OR CLOGGING TO STRUCTURAL MEASURES IS TO BE REPAIRED IMMEDIATELY. SILT TRAPS ARE TO _BE CLEANED WHEN 50% 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 DIVERSION DYKES WHICH ARE COLLECTING SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED AND REPAIRED IMMEDIATELY. 20. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE REMOVED WITHIN 30 DAYS OF FINAL SITE STABILIZATION, WHEN MEASURES ARE NO LONGER NEEDED, SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR. 21. THIS PLAN SHALL BE VOID IF THE OWNER DOES NOT OBTAIN A PERMIT WITHIN 1 YEAR OF THE DATE OF APPROVAL. (WATER PROTECTION ORDINANCE SECTION 17-204G). 22. PERMANENT VEGETATION SHALL BE INSTALLED ON ALL DENUDED AREAS WITHIN NINE (9) MONTHS AFTER THE DATE THE LAND DISTURBING ACTIVITY COMMENCED. (WATER PROTECTION ORDINANCE SECTION 17-207B). APPROVED by the Albemarle County Community Dev la ment Ilepartment Date _ `�b� OF vr� _ Zo ly Christopher C. Mul igan Lic. No. 031672 o��SSIONAL I APPROVALS DATE DEPARTMENT OF COMMUNITY DEVELOPMENT PLANNING / ZONNING W ------------- ENGINEERING r� V �w INSPECTIONS N J_ O6 W ARCHITECTUAL REVIEW BOARD i 00 J CSI W �F- FIRE RESCUE Y �8 W� ALBEMARLE COUNTY SERVICE AUTHORITY 0� O U� VA. DEPARTMENT OF TRANSPORTATION z o� A REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments DATE JAN. 31, 2014 W ------------- r� V �w N J_ O6 W 4(0<*O i 00 J CSI W �F- Y �8 W� 0� O U� w z o� W Z to NQ r Q (9at: U °CW;o 0 Z 1130 LL LL q Q.Z JZ T�►�/� J � W C rLu Q � `0c;�(z a LO 0 ZQ vN W O� Q4 0 (� (�} Lu O LL L Lu Wrc cc a LU oN , �!W •R� V W Z C 2 W :r a. REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments DATE JAN. 31, 2014 FILE NUMBER 8053 SHEET 1 of 12 W ------------- r� V N J_ O6 W z i 00 J CSI W �F- Y �8 W� 0� O U� w JJ 000 FILE NUMBER 8053 SHEET 1 of 12 - - \\ \\ \\ 'sr .� t\ \ \\ `\ \ (/ ( /`_'1_ -___-.__ a i //, _- '\ l I 1 l� I 1 \ / \ \--,--- - \ I \\ \\ \____ l � .t `\\ \\ \\\ \, \, ' ` // /-- - __ .._-....-_• "" 1/ / .�---\ i } I / / I % /} ) \ - } I PI 1 1 `I \ \ `\ 1 \ •._....a ( r / // I / // // / / // �_ �_- _._ _ __--'/ I // 7l 1 \ \ - \\ \\� _.� -, \\ ` _ � � �- f I j\ j f !/ /// �/ % /t / I // / `" _.-.------ ,,,�� _ --- -.._- - _.- _- -J ------'--'-'-- - -I'�__ _---'--- %B --\`� } �� /'-- �//\`_-S / / / i _._ __-.__---- - -._ -•� _ ` `"~ \ 1 "�f i= - �-� �-� 1 // / 1 r _.-. _ . ~ _. �. r - ---.,-_ ____-_..__ ---` -- _- --' `^ _.. _ 1 �ti_ --fir /� / �. 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L� IN THIS AREA � i/ 1 If i; a '_ '/ , // /' / i /t t / / / l.. 1 %t-- ( i iii / / // 1 / -- ( / /// / '"''l_-1 ---\ I / / �� / / / I \ /_ _ ----\ \ I j l { I I / 1 - _ _ _ - `EASEE�MIENT \ v \( S � ' WT55 \ I t j/�-tel.} \ \� , ``- - `, \, r /- // - - _ ' �` / \ -_ .._.. _ r _ '` �' 4 \ \ / / % 1/I, ,,,, __ L J .'�•/%"_666—...668- .__.-_._..._._ . ( I _ t \ \ } \\\ I t / l _-----=�-'-�::=-.�___ - - 676 -.-_ --�" --- ,-__-'__'-_- \�\ \,\. 2W ACCES &UIILITTYYffESUf �.---� _'" '-._.__.__�—___�.�-� '_^'_._._-_ \ \ \ D.D. 2886 P. 13t- _ _,-._ �•^' .-'� ..-- "� , \ �\ - _!, DIL TYPE 37D3 ,. <; - L TYi�E -� ;- \ `\,�`"\ _ 7 \ \\\Fz \ \ / \ 4 -- D \ \\\ `~�"_� -/ `682_.,/ / \ \\\\\ i / �- � j! _ 111 __ - 1 \ / II � I ` ~- -I.__ `'\ - _•_ \ `'\ l t ! \ \\ f J ``• — /�----_'_`-.'_\—, '\ '\ \\ \, \ \ \t \l �, ` ~\ \\\ \\\ \se- \-1'4 ._._ r , �_ l", �/! 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OPEN SPACE \\ \ ---` l /%i% :=:.' - - +.� -\ MARCH MOUNTAIN PROPERTIES, LLC \ \\ \ \\ \\ J JlI M-A O U //D.B. 2886 134(plat) / r%r/ / / / / p j'- \ \ / / / (Itf COUN-LBEMAR '\ / // ZONED: R1 I I i \ / I _ '\ TMP 55E -1-3C-1 BRIAN OR JOCELYN CABLE D.B. 4064 685 P TMP 5 5E -1-3C-2 STANLEY OR KEPHANY POWELL D.B. 3959 305 P _ + � -� ~� \ 1 / / / PRESENT USE OPEN SPACE � ( �- �-=-- �-� \ / '�� ` ! / ! / // _ ,1 \ \ / ) jlll --� X955 : tiQ la€ -` +' \ , ' %• ` ` j \ _ / / i ) t I \\ \\ I ( } fr Il\'�I - --- �/ ► /i / / i/ / I I \ \ I 1 1 t_ - pp- ------------_ __ -- \ 1 � / _/ / / / / // ! \ \ I -..%.- ..� ZONED: - \ ' --' / ' pRCy$E T SSE =COUNTY PARK - ZONED: NMD ZMA 04-024 ZONED: NMD, ZMA 04-024 FAMILY RESIDENCE \ - / -- -_�`' --I -'-- `- \\ \ PRESENT USE -SINGLE FAMILY RESIDENCE PRESENT USE SINGLE ___-- ; VQ [:W O o - �, \ `` / •' / / � 1 l -(�"`- r \ i i ! I loll \( ti_ �� L J Z� o cc: CCI U04 p / \ �~ \ PPPPQ tet. _._.. ��~ OF TMP 55E -11 -Al", \ `1t \\\\\\\ . _ \ ` \ .• ``" \ .+\ TMP 55E -1-3C-3 KENNETH OR VIRGINIA MACINTOSH D.B. 3969 473 p TMP 55E-1-3C-4_� NICHOLAS OR KIMBERLY TUSTISON D.B. 3956 p. 596 ' 55E CE ESV _ _ ~ �_ �\ 1N14RCHr/MouNTAIN PROPER ES,`LLG�i� / �/ �p / 'r "- \ \` jMP� NVA ROpER� roti ��-- 1` \\`�__`�..,-D.B. 2233 -p._389,_ --'ter r/ -� > \ \� �\ \\`D.B. 203pP T26 736 Apla#) r / / / `I \ 0� MpVNgA3� p' deg �~\l .' ZON RA ' \ -' / / / P % _ \� \ \ ::- - . ~ _\\\`�\\������ G \• _ / J j I) - ~ } \\ '' - / __..__ yMS ~~ :�////f \ 1 1 4 �` \ ZONED: NMD, ZMA 04-024 ZONED: NMD, ZMA 04-024 \ \ r r ) \ 00, 08 2233 Mp X03 /\ I \ \ } r \ -PRF�iT US GOLF -COURSE' / / t / 0 / \\ ` p 0• CEO; N PRK�NG _....ti' I / I ti P - '�1 - 11 //i \ } ! I -\ \ \ t I } I t l t PRESENT USE -SINGLE FAMILY RESIDENCE PRESENT USE - SINGLE FAMILY RESIDENCE ; j/} \ // _._- -' �� / Q� j / /' //�...\ \ \ ` V ;l_.__� `. Al Lt T CL UjT_ p /1 \ RE`"kNZ / ON OF-T.MP 0w I �)/'/'/ o) Lu z __ \; MARCH MOUNTAIN PRQ� D.B. 22~33-p - TMP 55E -1-3C-5 KEVIN LEY TMP 55E -1-3C-6 CHRISTOPHER OR TANYA WAITE • \ \ \ \ i / � I \ r .,'' ,389 \ \ \ \ \ 1 / \ -' D�� 2035p 736�73� (pl` J/i 0 \`\\\\\ r ~'\ ' r K \ \ \ ^ `i - D.B. 4166 412 D.B. 4336 066 \ \ , , \ rZl_ 04-024 i .. / \ \ \ \ �' ` ` ZONED: NMD, ZMA 04- 024 ZONED: NMD, ZMA 04- 024 \ \ \ \ \ `,._ _ \ / ,SE -VACANT SID ' TIAL LAND \\ /% • -' \ \ / / } PRESENT U `\ PRESENT USE - SINGLE FAMILY RESIDENCE PRESENT USE - SINGLE FAMILY RESIDENCE } I \\ \ \ \ \ \ \ \ r r }1\\\\ 2 PHASE TMP 55E -1-3C-7 TMP 55E -4-G-8 SAMUEL D. CRAIG 111 MARCH MOUNTAIN PROPERTIES I LLC I I } \ ~ -------- - -- - --__ ~ ` D. B. 4218 p. 243 ZONED: NMD, ZMA 04-024 SINGLE FAMILY RESIDENCE D.B. 4009 p. 364 ZONED: NMD, ZMA 04-024 PRESENT USE - VACANT MIXED USE LAND i \`; \\ -- - -r t/ "� \� - /A\ __._ _ ___-.�! _ _ / , \\\\\ 1;�/ \\\\\-_' - - - / PRESENT USE - _^ ( 0 MUM TMP 55E -4-G-32 TMP 55E-1-23-13 \ \ \ -- •, \ .. ` \ \ ` `t - r FUTURE \ \ \ \ \ t \ \ l 1 / / / %-' r�~ / "�% `'' \ / % T = r r •'•'•'•'•'•'•'•'�' JOHN W. WALKER 1 D. B. 4222 p. 168 ZONED: NMD, ZMA 04- 024 CRAIG ENTERPRISES INC. D.B. 4356 p. 310 ZONED: NMD, ZMA 04-024 � T \ } � ) - � � ,-� i ) I l 1 i { \\ / / } '' :: 1 / . ' / PRESENT USE - SINGLE FAMILY RESIDENCE PRESENT USE - SINGLE FAMILY RESIDENCE\.� PR i ,;_...,,!' .('! / r�-ice\ ��, ! 1 ! } , r. , / r / t / 1 / / I I I / i I .: / I \ \ / /` . ' \ \ / \ / / Jl \ 1 \ \ j \ -LOCK 2 /� TMP 55E-1-23-1 BENJI OR FLORA WYATT D.B. 4354 395 I } i \ i 1 1 I � \ \ \ i t \ . p - ZONED: NMD, ZMA 04 024 SINGLE FAMILY RESIDENCE PRE SENT USE SIN } i\ \ } 1 1 t ,� 1 \ - \ \\ \ \ ^; j \\, BLOCK 1 \ \ t 1 \ 1 } ! } I `\ ` \ \ ��: \ ` ,-� f . " rr, \ \ I :.. .. ... .. ." ...... ...... `\ / , ..... ...... .. \ \ f \ i R 1 OI PO OF TM 55 -1-11 \ } I _ \ i MOCH MOUNTAINPROPjERTIE�, LLO'Q \ \ t' B. 223 p. X89 /"\\ , . _ ... :::..::::'Y.::::':.. • .:::::. �.B. 235 pp. 726-1136 (plat) 1 � /�� } / / ... . .................... ....... r..... ............. 1 ZON�D: RA / 1\ d/ x.._..:. ...'.:........:.. _. I � \ \ \ /PRE SVT USE,- GOLF CO��tIIRSE --` \\, ,� :•:•:•:•:•:•:•:•:•:•:':':':•:•:•.•.•::''•'•:•:•:'::.....�..:.� ••:•::: '•': • ..•:•:': •••`:.•.•.•:•:•:•:•:':•:'.'•:•::•:•:•:•:':':::•.: •. ••::'::•..>. \ . \ J1 r ................... / .::.......'.'.. ,.. '.:::........................................... , ,,.--' .._ ,_/ \ / t 1 / • ". :. . 1�.,':::'::::::::::::::.::'::::::::: ':. ::'..::::::::: ' : ; / ` I I l 1 t \ } P 55E - 1-C *\ OLD TR LLA CENTER / I - �.......... , rl \ \ II t j 1\ \ `\ t\ \ MARCH MOUNTAI OPERTIES, LLC / t } ) / I \\ \ `} ` `� / l / ! \ D.B. 3596 pP.444-453 (plat) ZONED: NMD, ZMA 04-024 /U- ,; ( : P... • ,/;.. ,- � ,� � : I � / / FUME } \\ \ \, 6 t \ pL�JV/� i / \ PRESENT USE -MIXED RETAIL RESIDENTIAL UNITS j \ PHASING NOTES. l\ i ,,,,,.....PHASE` l--'""'�. PHASE 1 \\ \\ ;r--�=_ -- 11COM� � j Q o --t , : "_":., \\ , PHASE 1 WILL CONSIST OF THE ROUGH GRADING OF THE ENTIRE SITE \ Il //�... `'•-`,_____., \ ! ....'-r".... ,� i i \ r._ ....' I 1, r'~~- \\ �� / // %-•-. t.% .-- %,...,%.�'" _ f:. ' L 4 AS WELL AS THE CONSTUCTION OF ALL ROADS, UTILITIES AND VI� \I I /: " P�ASw_ a _- _En«ls_. MARCH:MOUPROPERTIES, �%,"...... NTAIN LLC INFRASTRUCTURE FOR BLOCK 35B LOTS 8 AND 9, AND ALL OF t I / -`" - - tDe.-2233 p_389 \ .. _....,, / 1 / / / BLQCIC�9B-• '~ - l D.B 2035 p. 7,26 y'�` , lat) � - s `.,1 • / - G ZIEDS/NMDA BLOCK 298. \ ' ,./, / .... -• ZMA. 04-0 4'"\ `\ , 1 I I / ' 1\ �\ _ _� \ \ \. t / PRESENT USE VACANT -'RESIDENTIAL LA,ND'� PHASE 2 / _ - ......:.... PHASE 2 WILL CONSIST OF THE CONSTUCTION OF ALL ROADS, UTILITIES TIES , I \, \o \•\ � ) / \\ \ \\ '`\ �('} \\ \ 1 -'', OC 2 8. AND INFRASTRUCTURE BLOCK FOR R,> _ Ham' \ � ./ ( / !/ / � /i � } �\ �. _...--- -_ `_ \ \ .\ \ DRIVEWAY: Vii.;....:;. t 1 1 \ \ r } t / l � LDC TIONS ) OCATIONS \ I / \ 1 } \ \ \ 1 / i \ I PHASE 3,-- t PHASE 3 WILL CONSIST OF THE CONSTUCTION OF THE PORTION OF ASHLAR l i ' \ ` AVENUE BETWEEN PHASE 2 AND OLD TRAIL DRIVE. ;ii`~ N\ - - + — y� . ----=-' 60LF DRIVE / ._ --_- �1i _ ,,--_--- \ l \ \ \ \ \ \ - /- PORTION OF TMP 55E -1 -Al _ i \ \\ TH 0 = =�� MARCW MOUNTAIN PROPERTIES, LLC \\ \\\\ \ \ \\\\\ \\� \ \\ \ _' ----- iJlll 4 - _ R_.. ----_ ---- _ - O.B. 22\3 p,\389 _D:B-2Q35 p. 26-�36 (plat)_. } \ \� \\ \ \\\ \\\\\\ \ \ \ --_- - - - -_ Z+ NED: NMD- \\\ \\\ \ \ \ \ I \ \ \ ✓� Il( \ t/ - y _ \ �� - ZMA-04-024 \ \ \\\� \\\\\ ,--- �t�\ —_ — 5 \\ \ \\ - \ l\ \-. J \, t / / ` \ ��` PRESENT USE --•--VACANT RESIDENTIAL LAND \\ \ } 1 \ \ \ �� \ \�""` `'• C A4L, \ \i \ Christopher C. Mulligan Lic. No. vo 031672 w � sv � ----- ---- - \,\ \--...__------- \\ \\ l~\,\ \i \\\�\\� ` / °�4SSI _ rte\ _____ - --. _'`-------}I \\ -- ..�+� � 1/ I I \ S��1� _ J_.. SCALE \\\ll \ \ 11 — _ _ __�`�., 1"=100' 100 0 100 200 IN SCALE IN FEET REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments DATE JAN. 31, 2014 Scale 1"=100' CONTOUR INTERVAL 2 FOOT z a z g Z w U F--� N !^ W i Q. 0 d U n W w N f!i w to cmp Q J Q. � Q ZO E.. Qr ('3 OC U Z Cc Ww 0U @j >o 0 g aZ L9 Lu "C� VQ [:W O o J Z� o cc: CCI U04 p 0 A VJ rn � Z O U. W t0 M� 4 tU Lt T CL UjT_ p 9Z o) Lu z W 0 = W a REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments DATE JAN. 31, 2014 Scale 1"=100' CONTOUR INTERVAL 2 FOOT FILE NUMBER 8053 SHEET 3of12 z �rrRR ncm IL V g Z _jC)6 > 00 LL, N !^ W i Q. 0 d U ® L w O w O FILE NUMBER 8053 SHEET 3of12 `1 23C ,Y.E: I• IPAFi ,''1 M`i' 18,," MIN �.•D,EPTH r'f •r opi r,h • (/UNDERLYING;-,.r-F1•.r� , i APRON LENGTH = 25 \ \ \�ti •--�•. / ,�; ^, __. __ ref e'Y // ! S / / C I F I CATI O N S EROSION AND SEDIMENT CONTROL LEGEND \ \, - J - -- ! •--t 1 / I J / #� CONSTRUCTION `\ \� �) �, _._ 'r ./ ,I / l BASIN RT CULVE CE ENTRANCE OUTFLOW 36 X" �\ / • .._ _ _ �/ tJ Q = 54.1 cfs CRS 3.03 CONSTRUCTION ROAD 10 STABILIZATION nSF 3.05 SILT FENCE SEDIMENT BASIN S CHEMA TI C ELE VA. TIONS CREST OF EME SPILLWA DESIGN HIGH WATER MIN. REV (25 YR. STORM ELEV.) EL=683.35 EL=680.35 I MIN. 1.0' RL=ISER CREST ...�:. E676.75 67 C.Y./ AC. ;; DEWATERING " DRY " STORAGE DEVICE 67 C.Y./ AC. ........... :'.............................. ?...... i'`.....:....:.` : 'r'r';i " WET STORAGE z:.�...upasr....: ...3.� SEDIMENT CLEANOUT POINT WET - STORAGE (" O 34 C.Y./ ACRE)DUCED DESIGN ELEVATIONS WITH EMERGENCY SPILLWAY DESIGN HIGH WATER T (25 -YR. STORM ELEV.) MIN. 3.0' MIN, 0.5'1 MIN. 1.0' j 67 C.Y./ AC. :.._.�.. " DRY " STORAGE RISER CREST 67 C.Y. AC. " / DEWATERING WET STORAGE DEVICE SEDIMENT CLEANOUT POINT " I J DESIGN ELEVATIONS WITHOUT EMERGENCY SPILLWAY (RISER PASSES 25 -YR. EVENT) 'OURCE: VA. DSWC \\\\\ \ SEE D.B. 4003 p 77 FOR \ \\ \ ADDITIONAL DRAINAGE ESMT. \ IN THIS AREA--,- D \ ` ; s V 3.09 DIVERSION DIKE 9g-_� ST 3.13 SEDIMENT TRAP `__- ` ss /'%/= " -- `•- / / / / // SB 3.13 SEDIMENT BASIN PREVENT RUNOFF FROM S(;C 3.17 STORMWATER CONVEYANCE} j II \ // I\ ••. ____ "� / ENTERING UPPER BALLARD CHANNEL / \ �} \ 1. __// e� CONSTRUCT 12' WIDE MINIMUM GRADED FILL TO PROTECT POND 1 TI BUL G AD \ e DURING INI AL K R ING CDI ,,,.•-' MIN. TOP ELEV.=683.25 3.20 -► ROCK CHECK DAMS { /j �- ` (PH 2, RAISE TO 684.00 TC 3.27 TURBIDITY CURTAIN TS 3.31 TS TEMPORARY SEEDING I� \� •,\ _�` '"-.. �-- �`\ .�.� `� Nom_-��• JJ / P S 3.32 PS PERMANENT SEEDING 0 01 nTpTREE PROTECTION \` \ - ~ _ ~`! ~ f -- _ _ V \\` \� \ / 3.38 \ \� - �._. _ -QV\\6) J \\ l AINAGE EASEMENT \�--pp: __134 -1 jf//l \ _ \ \ - \ 2r0i\ACC sss�� t \ .6.1 282 6 op./134 �J , ' \\\\ 111 l SF \ \\\\\\\\ \ C \ � _ TS53 F / \\ 20' DRAINAGE EASEMENT- ~' D.B. 2886 pp. 134-1555 f � _ 1 \ � J •l I f EX. INV. 6�2 \ \ \ `_� �,, /,,.. \ Remove Exist-_427,_ES-1 Install- 60-'Mbnhole t` %� --.Connection to be -water 20' SANITARY SEWER ESMY / /� OP1 fTighfio-E- st: 42" t3CP / D.B.Sfr'pp. 134-155/1/ t / leer Top = 676.75` I 1 t N -���See``WPO'Plan rC Specs:) _-VARIABLE-WIDTH aOPE ES9T. D.B. 2886 pp, 134-15>' 156 /// �Q-�p��// ..• ,I-__�---_•.� `r.,' J/ /•,• f \ I \ NSG D C 3.39 DUST CONTROL �� '--~.._'__ _ \\\ ;e \ ! / is 155 \\ > \ m r \ I ......� ```\ '•\ `� ._ �r- , \ j / T.~.. 154 OLD TRAIL WESTERN SE VA -Albemarle County 25 -Year Duration=330 min, Inten=0.86 inlhr Prepared by Hewlett-Packard Company Printed 6/3/2014 HydroCAD®10.00 s/n 08126 © 2013 HydroCAD Software Solutions LLC ! I /I I 4 I t � / / � F F �q� FS�Q1- �.. 183 • / � .--�.._--,.... 4 Stage -Area -Storage for Pond 5P: Sediment Basin (Western Side Prior to Bulk Grading) J Elevation Surface Storage Elevation Surface Storage / (feet) (sq -ft) (cubic -feet) (feet) (sq -ft) (cubic -feet) [ ! I I F,r/ `�G` 4✓✓ / \ /% 670.00 122 0 677.95 75,640 207,361 /I \} I I 670.15 819 71 678.10 78,284 218,909 I \ 9/ } 670.30 1,515 246 678.25 80,862 230,845 ; \I tN�C(F PLATE. 3,14-2 670.45 2,212 525 678.40 83,440 243,167 67060 2 909 909 67855 86 017 255 876 SPACING BETWEEN CHECK DAYS L = THE DISTANCE SUCH THAT POINTS A AND B ARE OF. EQUAL ELEVATION SOURCE: VA. DSWC EXISTING GRADE SEDIMENT BASIN SPECIFICATIONS J VARIABLE WID" DRAINAGE EASEMEI -' �• �. ':' D.B. 2886 pp. 134-11 SIF STOCKPILE AREA \\ I e^, l� l sss / r t 0 \ t 670.75 3,606 1,398 678.70 88,595 268,972\ 670.90 4,302 1,991 678.85 91,172 282,455 671.05 4,999 2,689 679.00 93,750 296,324 I I I j �Fl 671.20 5,696 3,491 679,15 96,328. 310,580 l I i o O I ! 1 1`� TS 671.35 6,393 4,397 679.30 98,905 325,222 ! J g 671.50 7,090 5,409 679.45 101,483 340,251 671.65 7,786 61524 679.60 104,060 355,667 F e I 671.80 8,483 7,744 679.75 106,638 371,470 671.95 9,180 9,069 679.90 109,216 387,659 / [ [ ? _ �/ '��/ // \ \ \ \ I % i \ , i 672.10 9,857 10,497 680.05 111,510 404,227 672.25 10,524 12,026 680.20 113,240 421,083 672.40 11,191 13,655 680.35 114,969 438,199 672.5511 858 15 383 680.50 116,698 455,574 t, 672.70 12,526 17,212 680.65 118,427 473,208 / /5� ! SF I 1, 672.85 13,193 19,141 680.80 120,156 491,102 673.00 13,860 21,170 680.95 121,886 509,255 673.15 14,527 23,299 681.10 123,615 527,668 OCK 28 ' / ! /� \1 - 1 673.30 15,194 25,528 681.25 125,344 546,340 673.45 15,862 27,857 681.40 127,073 565,271 I I I ! / SF 673.60 16,529 30,287 681.55 128,802 584,462 I J 1 \ \ 673.75 17,196 32,816 681.70 130,532 603,912 I �/ i \ l 1:' % / F I t \ / / ! VARIABLE WIDTH SLOPE\ ESMT. \ VARIABLE 6 pp. 134-155 S' 673.90 17,863 35,445 681.85 132,261 623,621 // / ; __ 674.05 18,838 38,183 682.00 133,990 643,590 674.20 20,429 41,128 682.15 133,990 643,590 674.35 22,020 44,311 682.30 133,990 643,590 �� I I . /r 67450 23 611 47 734 68245 133 990 643590 / (/ PLATE 5.20-1 \ I [ .'/ f f 69 /SIFI ��� e �/ lr / \ 674.65 25,202 51,395 ,-` 1 //�� \ /// / / f / /a 674.80 .26,792 55,294 674.95 28,383 59,432\�-- 675.10 29,974 63,809 \\ i I /: OSq �Tq�� \TS l 675.25 31,565 68,425 ,8 5/y0 j __ - .---- , - - X11 _ - _._/ j 10, 42APE SME A 675.40 33,156 73,279 / 1 I I ;.' ; / ` \ 6 F e! pp I 1 675.55 34,747 78,371 675.70 36,337 83,703 675.85 37,928 89,272/.' 676.00 39,519 95,081 ay \� I /, /.� \ \ \\ TP 676.15 42,298 101,217 VARIABLE\WIDTH 676.30 45,076 107,770 J� 676.45 47,855 114,740 __ ( 1 \ \ �-.,_--� ,�- -_ NI DRAINAGE EASEMENT 676.60 50,633 122,127 \\ \ --fir-- __ 69" e�� `" �`l D.B. 3442 188 194 676.75 53,412 129,930 1 1 / F `."€! F.00K-29B �, -- ~ `_-_ P_1? __ _ SF,r�- 676.90 56,190 138,150-_ _ - 677.05 58,969 146,787 I \' T - _-__ __ �- - UTILITY _EASEMENT r' // J -- _6g8- \ \ v z 1 _ -�- _D.B. 3442 -pp -11 -bb- -lost - 677.20 442 -pp --188- 677.20 61,747 155,841 \ F / >� 677.35 64,526 165,311 / ! � ,A �. � l SF ''� ` � �r \\ � � -o \ --`" --�--- \ %� jl/ / •'`\ �\ 677.50 67,304 175,198 677.65 70,083 185,502 _ 677.80 72,861 196,223 / / / \ \ G, \ ------- L ----- TOP OF DAM(AFTER BULKGRADE)=684.00 TOE OF DAM(AFTER BULKGRADE)=672.00 DESIGN HIGH WATER=680.25 (25 -YEAR) 60" RISER TOP=676.75 EX. 42" BARREL INV.=669.27 12" DEWATERING ORIFICE=676.75 CLEANOUT ELEV.-674.75 NOTE: EXIST. GRADES PROVIDE EXCESSIVE SEDIMENT BASIN STORAGE W/ CONSTRUCTED BERM - MIN. TOP OF BERM = 683.25. SEDIMENT BASIN DA = 35.6 ACRES C = 0.60 (Graded) Sed. Basin Volume = 134 cy/ac V = 4,770 cy/aC V = 4,771 cy/ac @ Elev. = 676.70 / ! 1 .� i ��/./ / /l -' a2 --___ _ � - "- sass= _ '\ �• ``. \ \ \ \ LANDSCAPE EASMEN`l 3442 pp. 188 194X, 1 V \\ / ( �/ 1 :' = ' __ V 'THIS-EASEME 1:11QCATION` '\ \ {SIF �! / D. UJOT S`EI T1) �0�1\ \� _- ~ _y IS APP X. EED G P1rAT \ \ \ \ \ l V I SF '� l 4 ' 1 l � J pp• � �4\a, ('\\,� b FROM CLERKS OFFICE ""j /. �SF \\ FI .-___ ./ i / f \\ \\ \\ \ I\ VAS - ---- = -} - ` /r "_ \\ \ \ \ \ \ \ \\ \\\\\\ \\ s { _ ..__ F.H.\ASS'Y\ \ l\ \ `\ 4~ I IV % TH 0 I lM T f/^ssz - ---_ - -_-- _=-_-_ - _: n�� 20'-UJILITY-EA�SEMEN-T` ^ \ \ \ \ \ \\ \ \\ \ \ \ \ It L F 1'1 _ 188 194 - -_- T. BE VACRTED - --------- x \i'` \ \ \ \ \ \ \ \\ ✓ ,-------.._-- _..... -, - "`( Q-.� - 20 UTILITYA-9EMENT._ D.B,/S442 pp. 188-194• __-_ _ t.1 ` 1\\\\ti\\\�\\ `------------- � - _/ \ \\ Christopher C. Mulligan `~ 031672 w� J `• �"..=:- l l l lI I i \` \•�• `` (� ��, \``, _- ~ � __..__-._----•____ -- --- -- t \ \\\�\\\ `�\\\\ SSIONAL Ell 666 SCALE 1"=100' f/J j 100 0 100 200 \\OU--/ ! 1 C ` // ,/I /j % l j l 1 `__ --\_ ____=~�1k`; SCALE IN FEET REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments ----------------------------- DATE January 31, 2014 Scale 1"=100' CONTOUR INTERVAL 2 FOOT j�� W rW VJ W N O z LU a. 5 .� LU 2 (o _ 1 CID 8 m W 2 0�, �o w JJ p� �r UQ V, O lzw;@ Chit �IT W -° r w J801 �. �z arj_, W Q Z� Q lA Urn N n� J '^ VJ W c LL O J I ' w Vjw hn Lu IZ OC O O;• W w Z = a REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments ----------------------------- DATE January 31, 2014 Scale 1"=100' CONTOUR INTERVAL 2 FOOT FILE NUMBER 8053 :SHEET 4of12 j�� W rW VJ N CL z z ® a. 5 >CD J N J 0 'o I�V ®O p v w JJ p� Z O V, O �IT W FILE NUMBER 8053 :SHEET 4of12 REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments DATE January 31, 2014 Scale 1" = you CONTOUR INTERVAL 2 FOOT N z SUPER SILT FENCE U F -I N j 06 z g z ow \ LU Z� N = 6 U ®®v O w � CL CONSTRUCTION ( U OF A SILT FENCE 0 0 V (WITH WIRE S UPPOR T� // ,, , / , / \, t" - ,�\ \ .6_ W¢ 2 Ua �w _= _ 1. SET POSTS AND EXCAVATE A 4"X4" TRENCH UPSLOPE ALONG THE UNE 2. STAPLE WIRE FENCING TO THE POSTS. GENERAL EROSION AND SEDIMENT CONTROL NOTES �> Q OF POSTS. J ,. O LL t1! ES 1: UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND _ _ \� :,~"` L `' ~ \�\•\ \\ ~ \ W T. CC CL Uj O[z SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA ,,,• ' - .., � / � \ \ `-_.,;�'--'..`_ --- __ � % / / / .'\ `'� \ - -- / `, `' / / �/ �� \ ! / Of l •�., y,,�- sss--- - -- - - - __ __, -- \ \ ° /- /�- �� I' EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR EROSION AND SEDIMENT CONTROL REGULATIONS. - _f-�r-/--' I 'JI! / // /i '�'•, \` `e\ """""``'• / r// 6/2/P`rr/ "_ /"`- fl I1\ � J ..-- --'--'._"-_--6- _7-6- =--- - --�--_-- - l- ._..--625-02-00 / /t \ O \! \\ -� t( (t _• G '.•-- -I I I I //�,. ES2: THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE //// \` ~�_, `"�` ` \�� �'- ��---- "r / / , r / / / // �• J{ ___.l.-- :,,. -'�'i� \ 1 i( i i \ t_ -%- __. �'~\�'���s� \\\\\1�.,�,`•. PRE -CONSTRUCTION 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.FLOW �`-�-_. ---;-_ - \ '' --- -�- s -094 r-` / I• _ \\1 Ili/(/r-,-.�.`�" IP I Ill � 4" 111111 ES 4: A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE t \ \ \, �'" _- �- '' %�. / / \ \ \\\ \ _ ? r _. _ / 6/ I 1 \ / - IPS \ \•-: - MAINTAINED ON THE SITE AT ALL TIMES. ( \ \\ _._ �- ``--/ �� 0� // °\ lip 1 I 1 � � i / \ \� �-� -�-'"�� ' _ /r // � / I ! i SF / ".,^ \ �\` � f�----.,•__•_� \4 -\\� _ �` � 1. 3. ATTACH THE FILTER FABRIC TO THE WIRE TRENCH. 4, BACKFILL AND COMPACT THE EXCAVATED SOIL. ES -5: PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON /) __ `` FENCE AND EXTEND IT INTO THE THESE PLANS INCLUDING, BUT NOT LIMITED 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 PLAN1 ` \\ \\\ •'� j \\ ~ "- //r, / � \\ � ( /��' \ � \ \ '�� '' .-- �--. �, '' ~ `� REVIEWING AUTHORITY. TC i' ' i z � ES -6: THE CONTRACTOR IS RESPONSIBLE INSTALLATION OF ANY ADDITIONAL EROSION \ \ \ \ \ \ \ \ \ \ J OP2 / � \•-� � \ X \ � ,tf•�,y .FOR CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN REVIEWING AUTHORITY. \ \\\ \ \ ( \ \ \\\ \\ I t\ \\ \ \ r -� \� _ _ _ _ 'I /'` TS TS z'• i�T( ES -7: ALL DISTURBED ARES ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE / DC FLOG IIIIII- DEVELOPMENT UNTIL FINAL STABILIZATION HAS BEEN ACHIEVED I Iii I I / l / / 1 ( " \ \~ --\ter - 111 VIII ES -8: DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED \ 4 \`` _ _ ^�_ " _ \ t I `({ { i i ` \ ` ` -- ~ / ! - - 0 2 , --- - / / i Proceed with diment Basin EXTENSION OF FABRIC AND HARE INTO THE TRENCH. FILTERING DEVICE. ES -9: THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY ' (� \ N \° \ \ `' -' ~"i'-- . -" ,` \ t"\ ! \ \ PS / �' �' % // _­-Gradingas ' I b er tions % I`TS. A roach- a BasrrPerirneter \ \ // PP• I 166 //--_-Mawmu Side ,Slopes afe \ FILTER FABRIC AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES \ \ __ _ \ \ \ \ \ ------- - __- • \._ _ \ \\ \ \ \ t \\ \ \ - ~ " ~ _-_ ` \\\• \\\\\\ / / \ \ \ \ \\ \ \ \ `_ ` x / / / Maxim waded EI VOti I J IP s �- i" -- • %� 1 0 / Shall emain BELOW% 7� \ SHALL BE MADE IMMEDIATELY. ` ~ \ / ` \\\\` (, !� \\ /$SRA WIRE I I \\ \�� \\ _-- •-' �1 \ . _ ._� -, % NSEp Ao \ I \\ \ \\\\ r \ \ / 1 166 ITCH D'FPI _...._ SOURCE:Adapted from o Straw Fabric Filter •e Sediment Co PLATE. 3.05-1 / \ 1 1 S / GRASS LININ CHANNE // / SB TO A 3+34 MP.ION NNL 69 IP I �j�.\.,`✓�` ,� !j r ' �\ TS.01 / \1 � - .- ---\� ,1 ~ ` 130 \ \ \ •, � �, J / ! / / \ INLET & #146 / 1 29 - P - \ \ #144 \ ( \ SHALL BE BLOCKED P \ \ TO PREVENT ANY / i \ (\ ( III \I I \\ ; ,n \ \ RUNOFF FROM ENTERING. } \\\ Inten=0.86 in/hr I I \ \\ l\ II 128 y C s �\ \ \\ \\ SF ° 1401 TS O OLD TRAIL WESTERN SE VA -Albemarle County 25 -Year Duration=330 min, Prepared by Hewlett-Packard Company Hydroi 10.00 s/n 08126 © 2013 HydroCAD Software Solutions LLC Printed 6/3/2014 I I' '\ \ Il t �f c s DC I j / \ \\ \\ �\\�•' ___-_sF_''�/ 1 � / ` \\ IP ` I\ / - } Stage -Area -Storage for Pond 4P: Sediment Basin Western Side After Bulk Grading) r ( 1 / I \\ \ � � I Elevation (feet) 670.00 Surface (sq -ft) 122 Storage (cubic -feet) 0 Elevation (feet) 677.95 Surface (sq -ft) 18,528 Storage (cubic -feet) 93,537 SEDIMENT BASIN ! 1 \ 1 / ( ( d/��' I J� / ,/ \ /J ( ( ( / 1 / \ /1 TS �/ l / \\ 3 sem, `''\ Rs IP �5F \ \ \ TS 0 670.15 852 73 678.10 18,775 96,334 ( 670.30 670.45 1,582 2,312 3,043 256 548 949 678.25 678,40 678.55 19,028 19,281 19,533 99,169 102,043 104,954 DA = 35.6 ACRES C = 0.60 Graded `•----- / ) I �// I ;' ,ti ,- �'� TS IP 670.60 670.75 3,773 1,460 678.70 19,786 107,902. Sed. Basin Volume - 134 670.90 671.05 4,503 5,233 2,081 2,811 678.85 679.00 20,038 20,291 110,889 113,914 _ c ac �/ V = 4,770 Cy/aC `- -' l l l / j '' �' r/ ' I ,' / 1 / ( 1 \ 6 - 12bP I I I I ( \ IR s 141 671.20 5,963 3,651 679.15 20,544 116,977 I DC IP 671.35 6,693 4,600 679.30 20,796 120,077 V = 4,771 cy/ac / / ( ( 101 cR 114 1 i 671.50 671.65 671.80 7,423 8,153 8,883 .5,659 6,827 8,105 679.45 679.60 679.75 21,049 21,301 21,554 123,215 126,392 129,606 Elev. = 679.85' /I / S 102 % I // t ) ) // \ 1 SF / ( f\ \\ O / /` 671.95 9,614 9,492 679.90 21,807 132,858 136,149 I / I i j l \ 1 / / I 672.10 672.25 9,992 10,193 10,971 12,485 680.05 680.20 22,104 22,490 139,494 BULK -GRADED SEDIMENT BASIN SPECIFICATIONS �� ► (:-/ / t ( / ` IP .• / IP 672.40 672.55 672.70 10,395 10,597 10,799 14,029 15,604 17,208 680.35 680.50 680.65 22,877 23,263 23,649 142,896 146,357 149,875 TOP OF DAM (AFTER B U L K G R A D E) = 6 8 4.0 0 '\ TP / / [ / / / " / i \` Ts 672.85 673.00 11,000 11,202 18,843 20,509 680.80 680.95 24,036 24,422 153,451 157,086 - TOE O F DAM (AFTER B U L K G R A D E) - 672.00 / \\ I / `- _ 1 `� / \ �) „ -� - -- -- _ _ _ - // /I ( \.\ J 673.15 673.30 11,404 11,605 22,204 23,930 681.10 681.25 24,809 25,195 160,778 1 64 528 DESIGN HIGH WATER=681.00 (25 -YEAR ) % I ( 1 673.45 673.60 673.75 11,807 12,009 12,211 25,686 27,472 29,288 681.40 681.55 681.70 25,581 25,968 26;354 168,336 172,203 176,127 60"RISER TOP = 6 76.7.5 " \ �• I / \ 1 \ / 673.90 674.05 12,412 12,620 31,135 33,012 681.85 682.00 26,741 27 127 180,109 184 149 EX. 42 BARREL INV.=669.27 » \ �.\ { /-.. \ - �..\ \ I / / / �'ti / SF \ \ �' _ . ` 04 1-.. v "� - TS \ -,s 111 ` ( DC 0 E \ 674.20 674.35 12,839 13,057 34,922 36,864 682.15 682.30 27,297 27,467 188,231 192,338 12 DEWATERING ORIFICE = 6 7 6.7 5 1 _ \ \ - 694 27,636 196,471 - CLEANOUT E L E V. = 6 7 4. 7 5 ,,., ...� 1 I / \� 'B�.00K-2qg- �' -- - - - 674.50 674.65 674.80 13,276 13,495 13,714 38839 40,847 42,887 682.45 682.60 682.75 27,806 27,976 200,629 204,813/ NOTE: EXIST. GRADES PROVIDE EXCESSIVE � 1 - ` ' ' 708 / I _.~1 _"_TP / r' / - \ - _ 6--- F _i' 674.95 675.10 13,933 14,151 44961 47,067 682.90 683.05 28,146 28,316 209,022 213,256 SEDIMENT. BASIN STORAGE W/ CONSTRUCTED - y 69 \ ; i 675.25 675.40 675.55 14,370 14,589 14,808 49,206 51,378 53,583 683.20 683,35 683.50 8 85 2 ,4 28,655 28,825 217516 221,802 226,113 - _/ BERM MIN. TOP OF BERM 684.00. ( / I j / 675.70 15,026 55,820 683.65 28,995 230,449 ( ) / / I/ _ - 675.85 676.00 15,245 15,464 58,091 60,394 683.80 683.95 29,165 29,334 234,811 239,199 I j // / l / SF s \ IP / l = 676.15 676.30 676.45 15,700 15,935 16,171 62,731 65,104 67,512 I \. \� ///J I l f / ,� 1 � `' SF \ � SF \ C� �%f / / ( � /, / \,.�s� � ' '' _. `� '` \ \` \ `\ \ \ \ \•\ \ \ \ 676.60 676.75 676.90 16,407 16,643 16,878 69,955SF 72,434 74,948 �' l � •� 677.05 17,114 77,497 \ 677.20 677.35 677.65 677.80 17,350 17,586 17,821 18,057 18,293 80,082 82,702 85,358 88,049677.50 90,775 / c I { / / / / // ) c\ ^' '' "•\' /-\ I\ \ \ \ \ (1 {I i _1 /. \ 1\ I (t} l \ \ \ \ \ \ \ \ \ \ \ \ \ \ \\ \ .. -- \ '° \ / ,, _ -- \ ) ( � / fir.--�'-•. � � •••�-��--�-.--.•�_ � _--•---- / � '•'.,�+".� - '\ \ %/ / \ ? \ \\ \ \\ J r„"- \• \ \ \ \ \ \ \ ,. ( t // \\� \ \\\ \ \ \\\ I\\ `l _- t /' '� \`\ I � / _-i...,.. /)/� �:\ �- � -I-! __ _-_ lC \ �� \ / /�\ 1 r _ _- _ _ __._. ,^- ___ \\ \ \\\\ \sem\ \ 1 --- \ \ \\ \\ \•\\\ \\ \ \ \ LTH OF \\ ��, PERMANENT UPPER BALLARD OUTLET PROTECTION '� '/ �,'/ , - - _ _ -- -� ,A r-�_'� - -- _ ,, \ \`\\ \\\\\\\\ \� \ \ v p o� �'".. }�'` t`'J- ,/• T; BASIN 1 ;..., r' • CU LVE ## RT `24 z..).,,{, ' \, \ !�`- t `� / l % , 1 s\\ \\\ _ - / / I _,meg \\ \\ ~` _ ------"l �\ �` f ---------- ---- Christopher C. Mulligan --ssa ` \\ \\ \\\ \\\\ \ �0,p 031672 - - l \ \ w 1 i C,YL� IIP AP LOW ' i o ,I, '� i � 1 �" ,MIN?. ;DEPTH.�'� `,< .i, �,, � E-- 42 0P }` I k. /' r/� \ l/i // \ �\ \ t \ \\t \\ �S SIo v E� NA WfUNDERLYINGI"F,.F - ,.i i i 1 Q10 73.2 cfs \ j (� ` r fl1 I ` J / // / l �\ /^� \ \\ �•,� \ \ \\_ -\ _ - -_ sae - `-` _- ------ ,_ ` _ 686 _ - �/ \ \ \ GALE 1 "=10�' APRON LENGTH = 20.5' \\ \\\�� \\ \\\ �_ / ( j \ \ \ \ I // / // / t 1 \ >\ \ \\ } { \ _ 6;18 __... __ _.._ .._-_- �.._-_ _., -" - __.-_� ; , - -- -- -r 100 0 200 -..\-_.=^-_" _ SCALE IN FEET '. `r,,.'� -'-_.__.-.. \\ /,/ J f !! / // 1 l/\ 1 \ (690`• .-1 / I I //�.'_``'" `\` .r / _„-•-'�� _ \. -,_`_.__ -. _-_ -- r -- REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments DATE January 31, 2014 Scale 1" = you CONTOUR INTERVAL 2 FOOT N z w U F -I N j 06 z g z ow ® J N® LU Z� N = 6 U ®®v O w � CL O ( U 0) O 0 0 V >O ui LL 0 �0 W¢ 2 Ua �w ZO U N 8 V �> Q .. J ,. O LL t1! 0> W z4 W T. CC CL Uj O[z � W C) Z Wd O Fil REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments DATE January 31, 2014 Scale 1" = you CONTOUR INTERVAL 2 FOOT FILE NUMBER 8053 SHEET 6of12 N w O Q 2 a. N j 06 z g z ow ® J N® a- 5 00 U ®®v O w � jz 0 I O 0) O Ir w FILE NUMBER 8053 SHEET 6of12 PERMANENT SEEDING MIXTURES � Ps PIPE OUTLET CONDITIONS � �' TEMPORARY SEEDING MIXTURES FOR THE PIEDMONT AREA oP U 2 FOR THE PIEDMONT AREA TS TABLE 25 TOTAL LBS. PER ACRE OUTLET PROTECTION v A A MINIMUM CARE LAWN -COMMERCIAL OR RESIDENTIAL 175-200 LBS. ANTI - VORTEX DEVICE SPECIFICATION 04 W z o TABLE 26 - KENTUCKY 31 OR TURF -TYPE TALL FESCUE %95-100% -`� (0 rn = TEMPORARY SEEDINGS BY RATES, DEPTHS, AND DATES Cj - IMPROVED PERENNIAL RYE GRASS 0-5% - W Z N Q Planting Seedingzones 37 and SeedingDate 38 - KENTUCKY BLUEGRASS 0-5/ fi- J1 L-� OI a Seeding Rate depth 36 1 g ' 3do do -?• .�- I Species3/ Per Lbs/1000 7a and 7b 6b 6a and 5b� Z r � acre Sq. ft (Inches) 2/1- 5/1 8/15- 3/1- 5/1- 18/15- 3/15- 6/1- 8/1-y PIPE OUTLET TO FLAT 4/30 8/14 11/3o 4/30 8/14 11/15 5/31 7/31 10/31 HIGH MAINTENANCE LAWN 200-250 LBS. �? t AREA RHANNELH NO DEFINED -� 90" ANTI -VORTEX � � � � > LL Choose one: BY BY BY c PLAN VIEW f O w KENTUCKY 31 OR TURF -TYPE TALL FESCUE 100/- 3/4"X8" BOLT A Z ` ° NUT, WASHER & ` J - CCC LOCK WASHER. J Barley 2.5 bu. 2.80 1-2 X - 10/15 X - 10/15 X - 10f1 Oats 3 bu. 2.21 1-2 x - x - x GENERAL SLOPE (3:1 OR LESS) Rye39 2.5 bu. 3.22 1-2 x - x x x x - x - KENTUCKY 31 FESCUE 128 LBS. USE 3"X3"x1/8" L GALVANIZED PLATE Barley or a FOR ATTACHING A W Rye Plus 150 lbs. 3.45 1 X X 10/15 X X 10/15 x x 10/1 - RED TOP GRASS 2 LBS. PIPE OiJTLEI PLATES TO FRAME " f1� �jJ Foxtail X X X X X X X X x SEASONAL NURSE CROP* 20 LBS. 0 % 18" LOWER ANCHOR TABS 60 RCP RISER Q O millet40 s x BOLT TO RCP RISER TOTAL 150 LBS. � d (4) 1.5"X1.5"X8" ANGLE V, Weeping 4 lbs. 0.09 1/4-1/2 - X - - X - - X -�iX� i [ (4) 3/8"X2" GALVANIZED BOLTS Q L1i lovegross4l LOW -MAINTENANCE SLOPE (STEEPER THAN 3:1) �- (8) 3/8" WASHERS W Q = ev Annual 50 lbs. 1.15 1/4-1/2 x 11/1 x - 11/1 x - 8/15 - KENTUCKY 31 FESCUE 108 LBS. FOR THE ENTIRE WRAP PFRi1WOR 1 N AnnuryegralSECTION A -A FILTER CLOTH KEY IN a"-9"; RECOMMENDED MINIMUM PLAN VIEW O p OC U rn SUPPORT ANGLES o 4 WELDED ATTACHMENT L 90" ANTI -VORTEX Q Millet42 50 lbs. 1.15 1/2 - x - - x - - x - RED TOP GRASS 2 LBS. A '� `"I{ . 8" UPPER ANCHOR TABS 1-� �' I V� O T PI E OUTLET XX w � , I ALL ROUND 'cc '"' Q r flatter A n I of 3:1 o tte Applicable o slopes es A * �L _ PP P S P 0 LBS O LL SEASONAL NURSE CRO 2 0 WELL r WE 199 -y r' ur 0 J 5 Jana ,�• i I s Publication 147 - sce aneou from USDA ARS M I••�- "� ' ure Adopted� Refer to fl A�--� 12" OWER A CHOR 37Y L N TABS 9 P ii -• < 29" W P r' DEFINED L ed t� 1. DEF E CHANNEL F+y J when haw t ground frozen and reseed w t dates, use mulch only if and Is I spring seeding to e ee fell and Lti Between f , 9 Y �,. 9 t< 38 P 9 .� W * `x CROWN VETCH 2 0 LBS o o , � r add 6 lbs c. e di s a 5 �.M permanent s e n urs r for late fall earl winter e edasan eco t/ , Ma be us< -:�` . `ter /P P YU 39L. N D< d MIA A+ N.ma eedin mixture A 50 LBSto the er Hent s TOT L 1� P 9 y. O "a 5" " 5' O F" F 1. X1.5 7. STEEL ANGLE T Seed X E Temporary Mix • waAdministration r r and tate HI h z. Ma S P '" "0 9 YY >"NURSE CROP ACCORDANCE W SEED D AS TED BELOW: h USE SEASONAL AL R E R P IN A R N E LTH LNG RTES TA W. �` •• � ' A N N ®90 P r H 1 Z € 2 A AR NOTC ®CENTER & 40 k� ( - lbs ac S j (f permanent seedi s Add 2 „�k' for mi summer m nt n 0 E VA IZ May beuedasan nurse crop d 80LT T GETH W G N E M s / Y P P 9 g v �r W r 8" 80 41 3 X3 4 BOLTS) CD en seed mix. / q o permanent / ) M� r W I L U 16 THROUGH APRIL 30TANNUAL RYE edi Add 10 lbs ac. FEBRUARY 16TH THRO G RI H. W -spermanentse n s. � r for i mid -summer d a use crop m d May be use San M/ �,. Y P 1 M. P VIEW ..� .J an seeding mix LAN o he permanent s t t P 9 AY ST THROUGH AUGUST 15TH FOXTAIL MILLET r M 1 42 V-- - i C i LO ATION OF 16TH THROUGH OCTOBER 31S ANNUAL RYE AUGUST 16 TH H R T .A P G R SUPPORT T A LE R N W { L �I� a 2 1.5"X1.5"X7.0' V 1 S THROUGH FEBRUARY 5 H ANNUAL RYE O Z NOVEMBER T TH H1 T STEEL ANGLE O 60" RCP••RISER': r? ** SUBSTITUTE SERICEA LESPEDEZA FOR CROWNVETCH EAST OF FARMVILLE, VA (MAY 0 % 1111,11111 O O W a THROUGH SEPTEMBER USE HULLED SERICEA ALL OTHER PERIODS USE UNHULLED SERICEA.) ;1r`x>t PHI SILT FENCE OUTLET DETAIL oP IF FLATPEA IS USED IN LIEU OF CROWNVETCH, INCREASE RATE TO 30 LBS./ACRE. ALL ` .� � � d �AtiTH 111111111 i of y o 0 •� r� SECTION A -A LEGUME SEED MUST BE PROPERLY INNOCULATED. WEEPING LOVEGRASS MAY BE ADDED SECTION A -A (SPECIAL DESIGN) SILT FILTER CLOTH KEY IN 6"-9"; RECOMMENDED FOR ENTIRE PERDIETER TO ANY SLOPE OR LOW MAINTENANCE MIX DURING WARMER SEEDING PERIODS; ADD 10- o 0 FENCE NOTES. 1, APRON LINING MAY BE RIPRAP, GROUTED RIPRAP. GABION O ,-+ 20 LBS./ACRE IN MIXES. BASKET, OR CONCRETE. u /� '� REVISIONS \t // ���� C i1 +- 12" u � Alm TOP IS 12 GAGE CORRUGATED T 2. La I3 THE LENGTH OF THE RIPRAP APRON A3 CALCULATED tl USING PLATES 3.18-3 AND 3.18-4. O Christopher C. Mulligan PRESSURE RELIEF METAL OR 1/8" STEEL PLATE. 3. d = 1.6' MINIMUM CLASS I STONE DEPTH P g HOLES 1/2" DIA. O June 06, 2014 EXIST. � Lic. No. PRESSURE RELIEF HOLES MAY '� EXIST, BE OMMITTED, IF ENDS OF PER COUNTY GROUND '� GROUND ,fo 031672 ��� CORRUGATIONS ARE LEFT FULLY ELEV. ELEV. Source: Va. DSWC Plate 3.18-1 4, E��� OPEN WHEN THE TOP IS COMMENTS IONAL ATTACHED. 10' OUTLET CROSS SECTOIN July 29, 2014 MAINTENANCELOG. so TED CYLINDER IS 14 GAGE CORRUGATED Comments METAL PIPE OR FABRICATED FROM a at i x PERMANENT SEEDING PS 1/8" STEEL PLATE. a.t 12e MAJOR GRADING ACTIVITIES DATE STAB/LIZIZED CONSTRUCTION AREAS DATE MAINTENANCE OF CONTROLS ADDITIONS DATE RAINFALL WEEKLY INSPECTIONS FERTILIZATION & MAINTENANCE August 20, 2014 31 I • Comments TABLE 24 NOTES wv_r �v- 1. THE CYLINDER MUST BE FIRMLY FASTENED TO THE Maintenance Fertilization for Permanent Seedings TOP OF THE RISER. =I I Use Soil Test Recommendation or Rates Shown Below Mowing in Mixture Formulation Lbs. per Lbs. per Mo In Seed p p 9 VIEW 9 Time 2. SUPPORT BARS ARE WELDED PERSPECTIVEV Acre 1000 sf TO 0 THE TOP OF THE RISER I 500 11 5 Not closer than 3 " ' ` OR ATTACHED BY STRAPS Tall fescue makes 10-10-10 Yearly, or as needed .:;: >`` ::> ; P 70% or more or if occasional mowing BOLTED TO TOP OF RISER. of cover. 30-10-10 400 9.2 fall is desired. DATE CONSTIGT" January 31, 2014 AdGri 3',�4( 2A AS#'��CALI lite Spring the year Do not mow L (1lJfiS rownvetchp fallowing establish- IS METRIC �ISfIB.f? Service les edeza 0-20-0 400 9.2 ment and a crownvetch ver 4-5 F?, rEhiVAT ears thereafter. Birdsfoot trefoil r Fairly uniform Not required. not Fall the year closer than 4" if stand of tall following establish- occasional mowing is PROFIL fescue & service 5-10-10 500 11.5 ment and every 4-5 desired, and then in lespedeza, or years thereafter. fall after seed has birdsfoot trefoil. matured. ,f)1f:°°; AePHf P Not required. not weeping lovegrass Spring the year Ati }'e1Hl$iifS & serice lespedeza following establish- closer than 4' if 9 occasionalmowingis -10-10 500 11.5 -4 desired, and fall fairly uniform 5 ment and every 3 e plant distribution years thereafter, after sericea has PAVEMILNC, matured. Mow no closer than 20-10-10 250 5.8 September, 2" for red fescue Red &. chewings 30 days later co FENCING AND ARMORING J fescue, Kentucky and Ky bluegrass; bluegrass, hard December, and closer than 3" SUPER SIL T FENCE CONSISTS OF 2 ADJACENT FENCE SECTIONS SEPARA TED 1-1.5 FEET. � � � P9, 171YF f hlA l fescue mixture: 20-10-10 100 2.3 May 20 -June -30, for fescue. ..... _ ....__--..-__. MUST EXfU,I� FULL 4�11Dj1�, - •L�1 0� i►tE� �1 if needed. CONSTRUCTION OF A SILT FENCE I 7 YPI CAI, SVA TER PrA Y W :' (WITHOUT WIRE SUPPORT) CROSS-SECTIONS � 1. SET THE STAKES. 2. EXCAVATE A 4 X 4 TRENCH UPSLOPE ALONG THE LINE OF COMPACTED SOIL 06 3tl �k Itk�1( STAKES ^' Z T�} aF I sE CO WMAX. `V _ CRA;ki�(N i`I+ INFORMATION FROM TABLE 3.32-C OF THE VA ESC HANDBOOK W a i. :.: r / DRIP LINE at IS PROVIDED BELOW FOR SEEDING SELECTION TOTAL LBS. PER ACREIII l �� M FIT IF Ti I, i-"- / w O 200-250 LBS li TYPICAL CONCRETE LINED DITCH TYPICAL GRASS LINED DITCH N Z SECTICiN AA. MINIMUM CARE LAWN I: COMMERCIAL OR RESIDENTIAL _ I3 �" I / /�- ' :-;.J�����, � - � jlir� ' '1.'YPICAL VEE CROSS-SECTIONS 90-100% / a� 1, E SNOW FENCE J 0 A iiillHluil "� 1tlr< T ++1,1;:-ulclt.it>I1 tie.ua tall cl ultll,?:IIm1u11_6il..uxcil,6;IUc:.t irt>;; KENTUCKY 31 OR TURF TYPE TALL FESCUE 0 10% FLOW ;.:,E:_. I l:l i I.I. T V� z 1 1t1I t' i7 -a1C ' t Ui1I IMPROVED PERENNIAL RYEGRASS 0-10% ..°►1 .. tl a lilt.•;1 E��li:l?`IYlk... ±.I c. �..1 .t1. ¢ t. _.._a�,�..� -_ --- ------ -'r f.4�b�„ "`�r 11 ;�. �-.tF..� ,... °�i 7". .� ;.FS<... � .,,..... ..:,, ..T .,. I:... ::� r4:'"'• - ;x;-'li�::� _- / t I I W ; KENTUCKY BLUEGRASS --1(l r75_4 i- t ?1 L a4111d � iI 14I t. d1}tl l f� Ci1111f'C : i11Y1� `Qlil t11E' '1I 1 i11IC tC1 �I}I. :.." „ D 6L� _.. ; I 4 - _ 1 IrV,0' ct �rttWl {II c< to lu�rOt,lItllClt aCclulixA.ltli�t11, fe, �1 C elitO±! f O1ki:: _ f k' ;: ,, I ,..:, GENERAL SLOPE (3:1 OR LESS) 128 LBS _ _ LL IITd'Ill a1Ptill C11`i1x1S,,CI1tliy QC"1?Itk'1C111�0 ::; „r<-.• 1�' W KENTUCKY 31 FESCUE 2 LBS J. STAPLE FILTER MATERIAL 4. BACKFILL AND COMPACT TO STAKES AND EXTEND THE EXCAVATED SOIL. PARABOLIC WATERWAY CROSS. -SECTION q Y p�f amu�++ RED TOP GRASS. 20 LBS IT INTO THE TRENCH. I Iga ® O ;A i 111AS•H R, SAEASONAL NURSE CROP ** l I., i TYPICAL RIRRAP CHANNEL ** USE SEASONAL NURSE CROP IN ACCORDANCE WITH SEEDING DATES AS STATED BELOW: D < BOARD FENCE MARCH, APRIL THROUGH MAY 15TH ANNUAL RYE ROCK CHECK DAM co MAY 16TH THROUGH AUGUST 15TH FOXTAIL MILLET / I`csY t" "ores) I� AUGUST 16TH THROUGH SEPTEMBER, OCTOBER ANNUAL RYE _ / t' �/ CORD FENCE O NOVEMBER THROUGH FEBRUARY WINTER RYE � IjIII +'g:,=; kI!i �� II! ���ll'e� I ���i, STD. &SPEC. #3.20 / A � '•"=`-! � ���� PLASTIC FENCE N.T,S FILTER CLOTH NOTE: ALTHOUGH FILTER CLOTH IS FERTILIZER 10-20-10 OR EQ SHALL BE APPLIED AT THE RATE OF 1000 LBS ACRE. ('w {t PREFERED, A GRANULAR FILTER MAY BE SUBSTITUTED FOR CORRECT METH0DS OF TREE FENCING O ( ) / , I 13' FLOW /1!!II FILTER CLOTH. FOR PHYSICAL REQUIREMENTS, SEE STD. & 1 AGRICULTURAL LIME SHALL BE APPLIED TO SEEDBEDS AT TTHE RATE OF 90 LBS 1000 SQ. FT. �Ilil_ // 6 jlIi11-ll Cc SPEC. 3,19, RIPRAP) SUGGESTED TEMPORARY SEEDING MIXTURE --- .I = II!' TYPICAL CONCRETE CHANNEL OOH Q� SHEET FLOW INSTALLATION -- O O FERTILIZER: 10-20-10 1,000 LBS/ACRE (PERSPECTIVE VIEW) EXPANSION JOINT > A FILTER CLOTH SEPTEMBER -FEBRUARY 15: 50% ANNUAL_ RYE & 50% WINTER RYE 100 LBS/ACRE (90' SPACING) (OPTIONAL FEBRUARY 16 -APRIL 30: ANNUAL RYE 100 LBS/ACRE 1 MAY -AUGUST: GERMAN MILLET 50 LBS/ACRE FLOW _ . ._. DO#'NSTREAff !VIEW SMAX OTHER OPTIONS EXIST, SEE VA EROSION AND SEDIMENT CONTROL HANDBOOK. A B A FILE NUMBER VDOT #1 SUGGESTED PERMANENT SEEDING MIXTURE ,,., �� .,- NOT TO SCALE A COARSE � 6"I4- #4-18" DOWEL %f��/\\ ° \, \i�• LOCATED AT JOINTS / 8053 AGGREGATE LIME: 2 TONS/ACRE '' ' ✓ 6X6 WELDED WIRE FABRIC / AS REQUIRED I( FLOW O FERTILIZER: 10-20-10 1,000 LBS/ACRE ` - 1 . �. € ea3i s - ---- -- CD D W POINTS A SHOULD BE HIGHER THAN POINT B. - - - 3" DIA' WEEP MARCH -MAY 15: KENTUCKY 31 FESCUE 200 LBS/ACRE, ANNUAL RYE 20 LBS/ACRE HOLE, 8' o.c. I' O MAY 16 -AUGUST 15: KENTUCKY 31 FESCUE 200 LBS/ACRE, FOXTAIL MILLET 20 LBS ACRE DRAINAGEWAY INSTALLATION1 1 a CORRECT TRUNK ARMORING AUGUST 16 -OCTOBER: KENTUCKY 31 FESCUE 200 LBS ACRE, ANNUAL RYE 20 LBS ACRE SECTION A -A / (FRONT ELEVATION) PLATE 3.05-2 � 0'� RIPRAPCLASS I NOVEMBER -FEBRUARY: KENTUCKY 31 FESCUE 200 LBS/ACRE, WINTER RYE 20 LBS/ACRE YRAPEZOIDAL WATERWAY caoss-sEcrloNs TRIANGULAR BOARD FENCE SHEET SOURCE. Adapted from Installation af_Straw and Fabric Filt r Barriers for Sediment ControLVA. DSWC Sherwood and Wyant SOURCE: VA. DSWC PLATE 3.17-1 Source: Va. DSCW Plate 3.38-2 7 Of 12 I, EROSION AND SEDIMENT CONTROL MINIMUM STANDARDS 1. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT FOR LONGER THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANTFORMORE THAN ONE YEAR. R SEDIMENT NT TO EXIT. A EROSION 0 M I SITE AND NOT ALLOW ANY E A STABILIZED CONTRACTOR SHALL ESTABLISH, 2. DURING CONSTRUCTION OF THE PROJECT, SOIL STOCKPILES AND BORROW AREAS SHALL BE STABILIZED OR PROTECTED WITH SEDIMENT TRAPPING. MEASURES. THE APPLICANT IS RESPONSIBLE FOR THE TEMPORARY PROTECTION AND PERMANENT STABILIZATION OF ALL SOIL STOCKPILES ON SITE AS WELL AS BORROW AREAS AND SOIL INTENTIONALLY TRANSPORTED FROM THE PROJECT SITE. THERE ARE NO PERMANENT SOIL STOCKPILES TO BE LOCATED ONSITE. ALL EXCESS MATERIAL TO BE HAULED TO AN APPROVED SITE WITH ADEQUATE EROSION CONTROL PROTECTION. 3. A PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED AREAS NOT OTHERWISE PERMANENTLY STABILIZED. PERMANENT VEGETATION SHALL NOT BE CONSIDERED ESTABLISHED UNTIL A CONTRACTOR SHALLESTABLISHA VEGETATIVENCOVER' ON ALL DENUDED ARESURVIVE AND WILL INHIBIT EROSION. 4. SEDIMENT BASINS AND TRAPS, PERIMETER DIKES, SEDIMENT BARRIERS AND OTHER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP 1N ANY LAND -DISTURBING - ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOP E LAND DISTURBANCE TAKES PLACE. SEDIMENT BASIN IS LOCATED TO ACCEPT THE ENTIRE WESTERN DEVELOPMENT AREA. 5. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION. CONTRACTOR SHALL INSPECT EROSION CONTROL MEASURES AFTER EACH RAINFALL EVENT. 6. SEDIMENT TRAPS AND SEDIMENT BASINS SHALL BE DESIGNED AND CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE SERVED BY THE TRAP OR BASIN. THE SEDIMENT BASIN IS SIZED FOR THE ENTIRE CONTRIBUTING AREA. A. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT TRAP SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA AND THE TRAP SHALL ONLY CONTROL DRAINAGE AREAS LESS THAN THREE(3.0) ACRES. SEE SIZING TABLE FOR DIMENSIONS. B. SURFACE RUNOFF FROM DISTURBED AREAS THAT IS COMPRISED OF FLOW FROM DRAINAGE AREAS GREATER THAN OR EQUAL TO THREE ACRES SHALL BE CONTROLLED BY A SEDIMENT BASIN. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT BASIN SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA. THE OUTFALL SYSTEM SHALL, AT A MINIMUM, MAINTAIN. THE STRUCTURAL INTEGRITY OF THE BASIN DURING A TWENTY-FIVE YEAR STORM OF 24-HOUR DURATION. RUNOFF COEFFICIENTS USED IN RUNOFF CALCULATIONS SHALL CORRESPOND TO A BARE EARTH CONDITION OR THOSE CONDITIONS EXPECTED TO EXIST WHILE THE SEDIMENT BASIN IS UTILIZED. R SEDIMENT BASIN IS SIZED BASED ON BARE SOIL CONDITIONS. DIVERT UN DISTURBED AREAS FROM ENTERING TE ING POND. 7. CUT AND FILL SLOPES SHALL BE DESIGNED AND CONSTRUCTED IN A MANNER THAT WILL MINIMIZE EROSION. SLOPES THAT ARE FOUND TO BE ERODING EXCESSIVELY WITHIN ONE YEAR OF PERMANENT STABILIZATION SHALL BE PROVIDED WITH ADDITIONAL SLOPE STABILIZING MEASURES UNTIL THE PROBLEM IS CORRECTED. THIS APPLIES TO THE PROPOSED CUTSLOPE AND IMPROVEMENTS ALONG UPPER BALLARD POND. 8. CONCENTRATED RUNOFF SHALL NOT FLOW DOWN CUT OR FILL SLOPES UNLESS CONTAINED WITHIN AN ADEQUATE TEMPORARY OR PERMANENT CHANNEL, FLUME OR SLOPE DRAIN STRUCTURE. SITE RUN-OFF WILL BE PICKED & CONVEYED W/ MAN-MADE DITCHES, CONVEYED TO APPROVED E&S MEASURES. 9. WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED. THERE ARE NO CRITICAL AREAS ONSITE. 10. ALL STORM SEWER INLETS THAT ARE MADE DURING CONSTRUCTION SHALL BE PROTECTED SO THAT SEDIMENT -LADEN WATER CANNOT ENTER THE CONVEYANCE SYSTEM WITHOUT FIRST BEING FILTERED OR OTHERWISE TREATED TO REMOVE SEDIMENT. INLET SHALL BE PROTECTED WITH INLET PROTECTION TO PREVENT SEDIMENT FROM ENTERING THE PIPES.. 11. BEFORE NEWLY CONSTRUCTED STORM WATER CONVEYANCE CHANNELS OR PIPES ARE MADE OPERATIONAL, ADEQUATE OUTLET PROTECTION AND ANY REQUIRED TEMPORARY OR PERMANENT CHANNEL LINING SHALL BE INSTALLED IN BOTH THE CONVEYANCE CHANNEL AND RECEIVING CHANNEL. APPLICABLE TO THE CLEANWATER DIVERSION .AND THE CONVEYANCE CHANNEL TO THE EXIST. POND. 12. WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED, PRECAUTIONS SHALL BE TAKEN TO MINIMIZE ENCROACHMENT, CONTROL SEDIMENT TRANSPORT AND STABILIZE THE WORK AREA TO THE GREATEST EXTENT POSSIBLE DURING CONSTRUCTION. NONERODIBLE MATERIAL SHALL BE USED FOR THE CONSTRUCTION OF CAUSEWAYS AND COFFERDAMS. EARTHEN FILL MAY BE USED FOR THESE STRUCTURES IF ARMORED BY NONERODIBLE COVER MATERIALS. THERE ARE NO CRITICAL AREAS ONSITE. 13. WHEN A LIVE WATERCOURSE MUST BE CROSSED BY CONSTRUCTION VEHICLES MORE THAN TWICE IN ANY SIX-MONTH PERIOD, A TEMPORARY VEHICULAR STREAM CROSSING CONSTRUCTED OF NONERODIBLE MATERIAL SHALL BE PROVIDED. THERE ARE NO CRITICAL AREAS ONSITE. 14. ALL APPLICABLE FEDERAL, STATE AND LOCAL REGULATIONS PERTAINING TO WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE MET. THERE ARE NO CRITICAL AREAS ONSITE. 15. THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER WORK IN THE WATERCOURSE IS COMPLETED. THERE ARE NO CRITICAL AREAS ONSITE. 16. UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS IN ADDITION TO OTHER APPLICABLE CRITERIA: A. NO MORE THAN 500 LINEAR FEET OF TRENCH MAY BE OPENED AT ONE TIME. B. EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF TRENCHES. C. EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED THROUGH AN APPROVED SEDIMENT TRAPPING DEVICE, OR BOTH, AND DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT FLOWING STREAMS OR OFF-SITE PROPERTY. D. MATERIAL USED FOR BACK FILLING TRENCHES SHALL BE PROPERLY COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE STABILIZATION. E. RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULATIONS. F. APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH. THIS APPLIES TO ALL UTILITY INSTALLATION OPERATIIONS INCLUDING WATER, SEWER, POWER, CABLE OR GAS. 17, WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED OR PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY VEHICULAR TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PAVED OR PUBLIC ROAD SURFACE, THE ROAD SURFACE SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPORTED TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER. THIS PROVISION SHALL APPLY TO INDIVIDUAL DEVELOPMENT LOTS AS WELL AS TO LARGER LAND -DISTURBING ACTIVITIES, CONTRACTOR SHALL MAKE PROVISIONS TO KEEP ADJACENT ROADS CLEAN FROM SOIL BUILD-UP. 18. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM AUTHORITY. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. CONTRACTOR SHALL STABILIZE SITE, AND OBTAIN INSPECTOR APPROVAL PRIOR TO REMOVING ANY EC MEASURES. 19. PROPERTIES AND WATERWAYS DOWNSTREAM FROM DEVELOPMENT SITES SHALL BE PROTECTED FROM SEDIMENT DEPOSITION, EROSION AND DAMAGE DUE TO INCREASES IN VOLUME, VELOCITY AND PEAK FLOW RATE OF STORM WATER RUNOFF FOR THE STATED FREQUENCY STORM OF 24-HOUR DURATION IN ACCORDANCE WITH THE FOLLOWING STANDARDS AND CRITERIA: ALL CONCENTRATED RUN-OFF IS DIRECTED TO DRAINAGE DITCHES OR INLETS AND OUTFALLS INTO A TEMPORARY SEDIMENT BASIN. THERE IS ALSO AN EXISTING WET POND LOCATED AT THE PERMANENT OUTFALL. A. CONCENTRATED STORM WATER RUNOFF LEAVING A DEVELOPMENT SITE SHALL BE DISCHARGED DIRECTLY INTO AN ADEQUATE NATURAL OR MAN-MADE RECEIVING CHANNEL, PIPE OR STORM SEWER SYSTEM. FOR THOSE SITES WHERE RUNOFF IS DISCHARGED INTO A PIPE OR PIPE SYSTEM, DOWNSTREAM STABILITY ANALYSES AT THE OUTFALL OF THE PIPE OR PIPE SYSTEM SHALL BE PERFORMED. ALL RUN-OFF IS CONVEYED TO UPPER BALLARD POND, ULTIMATELY THE ORIGINAL OUTFALL LOCATION OF LICKINGHOLE CREEK, ADDITIONAL OFFSITE AND DEVELOPED ONSITE RUNOFF IS BEING DIVERTED THROUGH UPPER BALLARD POND FOR WATER QUALITY TREATMENT AND DETENTION. B. ADEQUACY OF ALL CHANNELS AND PIPES SHALL BE VERIFIED IN THE FOLLOWING MANNER: (1) THE APPLICANT SHALL DEMONSTRATE THAT THE TOTAL DRAINAGE AREA TO THE POINT OF ANALYSIS WITHIN THE CHANNEL IS ONE HUNDRED TIMES GREATER THAN THE CONTRIBUTING DRAINAGE AREA OF THE PROJECT IN QUESTION; OR (2) (a) NATURAL CHANNELS SHALL BE ANALYZED BY THE USE OF A TWO-YEAR STORM TO VERIFY THAT STORM WATER WILL NOT OVERTOP THE CHANNEL BANKS NOR CAUSE EROSION OF CHANNEL BED OR BANKS; AND THE CHANGES IN RUN -.OFF ASSOCIATED WITH THE DEVELOPMENT ARE QUANTIFIED IN THE HYDROLOGIC ANALYSIS AND SUMMARIZED IN THE NARRATIVE. DRAINAGE CHANGES GREATLY REDUCES THE COMMON STORM PEAKS, SINCE MUCH OF THE DA CURRENTLY BYPASSES THE POND WITHOUT ATTENUATION THROUGH AN EXISTING FOR THIS PORTIIONLOFTRTHHE DEVELOPMENTRAND SgAL L ALSO PROVIDE SHALL LTHE0100YEAR PRE -POST DETENTION ME ASSOCIATED WITH THE SAME IMPROVEMENT AREA. SEE UPPER BALLARD DRAINAGE MAP, INCLUDING THE POND ROUTING SUMMARY AND DETAILS. EROSION AND SEDIMENT CONTROL NARRATIVE PRIOR TO CONSTRUCTION 1.) CONTRACTOR SHALL OBTAIN PERMITS TO WORK WITHIN STATE RIGHT-OF-WAY (VDOT LAND -USE PERMIT). 2.) CONTRACTOR SHALL COORDINATE WITH OWNER TO OBTAIN VSMP OFCONSERVATION D B THE ST PERMITS, AS REQUIRED Y TE DEPARTMENT A Q AND RECREATION(DCR). 3.) CONTRACTOR SHALL OBTAIN LAND DISTURBANCE PERMIT FROM THE COUNTY OF ALBEMARLE PRIOR TO BEGINNING CONSTRUCTION. A PRECONSTRUCTION MEETING WITH THE ENGINEER, THE CERTIFIED LAND DISTURBER, AND THE ENVIRONMENTAL INSPECTOR MAY ALSO BE REQUIRED. ALLOW 72 HOURS FOR COORDINATION AND SCHEDULING OF PRE -CONSTRUCTION MEETING. PROJECT DESCRIPTION THE PURPOSE OF THIS PROJECT IS TO CONSTRUCT TWENTY-ONE SINGLE FAMILY DETACHED DWELLINGS, 10 SINGLE FAMILY DUPLEX UNITS, UTILITY SERVICES AND ROAD FRONTAGE AND SUBSEQUENT INFRASTRUCTURE. ALL EXISTING AND PROPOSED RUNOFF FROM THE DEVELOPMENT WITHIN THIS SECTION WILL OUTFALL TO THE PROPOSED TEMPORARY SEDIMENT BASIN. THE SEDIMENT BASIN WAS SIZED TO ACCOMODATE ALL OF THE WESTERN AREA DEVELOPMENT. ADDITIONAL DIVERSIONS SHALL BE INTRODUCED TO DIRECT AND CAPTURE ALL RUNOFF FROM ALL DENUDED AREAS. THE CONSTRUCTION ENTRANCE AND SEDIMENT BASIN SHALL BE INSTALLED PRIOR TO ANY GRUBBING ACTIVITIES, AS SHOWN. THE EXISTING TEMPORARY STORM SEWER OUTFALL LOCATION SHALL REMAIN UNTIL REMOVAL IS APPROVED BY THE ENVIRONMENTAL INSPECTOR. THE LIMITS OF DISTURBANCE INCLUDES APPROXIMATELY 35.6 ACRES OF LAND DISTURBING ACTIVITIES. EXISTING SITE CONDITIONS CURRENTLY THE DISTURBED AREA IS MOSTLY OPEN AND GRASS COVERED. THE SEDIMENT BASIN, LOCATED WITHIN THE CURRENT LOW AREA WILL RECEIVE ALL THE STORMWATER RUNOFF FROM THE WESTERN PORTION OF THE DEVELOPMENT AND A FILL DIVERSION SHALL BE INSTALLED TO PREVENT ANY RUN-OFF FROM ENTERING UPPER BALLARD POND. THE INSTALLATION AND MAINTENANCE OF THE DIVERSION ALONG THE POND IS CRUCIAL FOR CONTROLLING RUNOFF DURING GRADING OPERATIONS. THERE ARE ALSO SMALL PORTIONS OF THE ADJACENTLY GRADED AREA THAT DRAINS TO THE EXISTING AND PROPOSED SEDIMENT TRAPS. THERE IS A LARGE EXISTING WET POND LOCATED AT THE OUTFALL OF THIS WATERSHED. ULTIMATELY, IT WILL BECOME THE FUNCTIONAL BMP FOR THE ENTIRE DEVELOPMENT WITH IN THIS WATERSHED. ADJACENT AREAS OLD TRAIL DRIVE FORMS THE WESTERN BORDER, TRIBUTARIES OF THE LICKINGHOLE CREEK LIE TO THE NORTH, AND EAST. BLOCKS 28, AND 29B OF OLD TRAIL SUBDIVISION LIE UPLAND TO THE SOUTH: OFF-SITE AREAS NO CONSTRUCTION OUTSIDE THE LIMITS OF CLEARING AND GRADING SHOWN IS REQUIRED. ANY SURPLUS OR SHORTAGE SHALL BE BROUGHT TO OR OBTAINED FROM A SITE WITH APPROVED E&S MEASURES IN PLACE. ALL EXCESS MATERIAL SHALL BE HAULED TO AN APPROVED SITE WITH ADEQUATE EROSION CONTROL PROTECTION. SOILS 4D - ASHE LOAM - 15% TO 25% SOIL IS RELATIVELY DEEP, HEAVILY SLOPING AND SOMEWHAT EXCESSIVELY DRAINED, AND IS IN HYDROLOGIC GROUP B. PERMEABILITY IS VERY LOW TO HIGH AND WATER CAPACITY IS LOW. SURFACE RUNOFF AND EROSION HAZARD ARE MEDIUM. 513 - BELVOIR LOAM - 2% TO 7% SOIL IS DEEP, GENTLY SLOPING AND SOMEWHAT POORLY DRAINED, AND HAS A SEASONABLY HIGH WATER TABLE. SLOW PERMEABILITY WITH A LOW -MODERATE WATER CAPACITY. GENERALLY SUITABLE FOR ROAD FILL MATERIAL. SURFACE RUNOFF POTENTIAL IS MEDIUM AND EROSION HAZARD IS MODERATE, WITH SOILS HAVING SHRINK -SWELL POTENTIAL 25B - DYKE SILT LOAM - 2% TO 7% SOIL IS DEEP, MODERATELY SLOPING AND WELL -DRAINED, AND IS IN HYDROLOGIC GROUP B. PERMEABILITY AND WATER CAPACITY ARE MODERATE. SURFACE RUNOFF AND EROSION HAZARD ARE MEDIUM. 26B3 -DYKE CLAY LOAM - 2% TO 77, SEVERELY ERODED SOIL IS DEEP, MODERATELY SLOPING AND WELL -DRAINED, AND IS IN HYDROLOGIC GROUP B. PERMEABILITY IS MODERATELY HIGH TO HIGH AND WATER CAPACITY IS HIGH. SURFACE RUNOFF AND EROSION HAZARD ARE MEDIUM. 26C3 -DYKE CLAY LOAM - 7% TO 15%, SEVERELY ERODED SOIL IS DEEP, MODERATELY SLOPING AND WELL -DRAINED, AND IS IN HYDROLOGIC GROUP B. PERMEABILITY IS MODERATELY HIGH TO HIGH AND WATER CAPACITY IS HIGH. SURFACE RUNOFF AND EROSION HAZARD ARE MEDIUM. 36C - HAYESVILLE LOAM - 7% TO 15% SOIL IS DEEP, MODERATELY SLOPING AND WELL -DRAINED, AND IS IN HYDROLOGIC GROUP B. PERMEABILITY IS MODERATELY HIGH TO HIGH AND WATER CAPACITY IS HIGH. SURFACE RUNOFF AND EROSION HAZARD ARE MEDIUM. 36D - HAYESVILLE LOAM - 15% TO 25% SOIL IS DEEP, HEAVILY SLOPING AND WELL -DRAINED, AND IS IN HYDROLOGIC GROUP B. PERMEABILITY IS MODERATELY HIGH TO HIGH AND WATER CAPACITY IS HIGH. SURFACE RUNOFF AND EROSION HAZARD ARE MEDIUM. 37D3 - HAYESVILLE CLAY LOAM - 15% TO 25%, SEVERELY ERODED SOIL IS DEEP, HEAVILY SLOPING AND WELL -DRAINED, AND IS IN HYDROLOGIC GROUP B. PERMEABILITY IS MODERATELY HIGH TO HIGH AND WATER CAPACITY IS HIGH. SURFACE RUNOFF AND EROSION HAZARD ARE MEDIUM. CRITICAL EROSION AREAS CRITICAL EROSION AREAS EXIST ON THIS SITE. PARTICULAR CARE SHALL BE TAKEN ON THE FILL SLOPES AND DITCHES TO ENSURE ADEQUATE VEGETATION IS ESTABLISHED AND ALL DENUDED AREAS ARE PREVENTED FROM RUNNING OFF INTO UPPER BALLARD FARM POND. EROSION AND SEDIMENT CONTROL MEASURES UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK, LATEST EDITION. THE MINIMUM STANDARDS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL REGULATIONS SHALL BE ADHERED TO UNLESS OTHERWISE WAIVED OR APPROVED BY A VARIANCE STRUCTURAL PRACTICES 1. TEMPORARY CONSTRUCTION ENTRANCE (3.02) - A TEMPORARY CONSTRUCTION ENTRANCE SHALL BE INSTALLED WHERE THE ACCESS ROAD INTERSECTS WITH CLAREMONT LANE. 2. CONSTRUCTION ROAD STABILIZATION (3.03) - ACCESS ROADS, PARKING AREAS, AND OTHER ON-SITE VEHICLE TRANSPORTATION ROUTES SHALL BE STABILIZED WITH STONE IMMEDIATELY AFTER GRADING. 3. SILT FENCE BARRIER (3.05) - SILT FENCE BARRIERS WILL BE INSTALLED DOWNSLIDE OF AREAS WITH MINIMAL GRADES TO FILTER RUNOFF FROM SHEET FLOW AS INDICATED ON THE ATTACHED SITE PLAN. 4. TEMPORARY DIVERSION DIKES (3.09) - A SYSTEM OF DIVERSION DIKES TO DIRECT FLOW INTO THE SEDIMENT BASIN WILL BE INSTALLED AS SHOWN ON THE PLAN. 5. TEMPORARY SEDIMENT BASINS (3.14) - THE TEMPORARY SEDIMENT BASIN SHALL BE CONSTRUCTED UTILIZING THE EXISTING 42" RCP PIPE UNDER OLD TRAIL DRIVE AS THE OUTFALL. SEE THE BASINS DETAILS AND DESIGN SPECIFICATIONS FOR CONSTRUCTION. THE BASIN IS ADEQUATELY SIZED TO ACCOMMODATE THE ENTIRE AREA, DRAINAGE AR BOTH PRIOR TO AND AFTER GRADING OPERATIONS. 6. STORMWATER CONVEYANCE CHANNEL (3.17) - A SERIES OF CHANNELS SHALL BE CONSTRUCTED TO PROVIDE FOR THE CONVEYANCE OF CONCENTRATED RUNOFF TO A RECEIVING CHANNEL WITHOUT DAMAGE FROM EROSION. TYPICAL DITCH SECTIONS & CALCULATIONS ARE SHOWN ON THE PLAN. 7. CHECK DAM (3.20) - SEVERAL ROCK CHECK DAMS WILL BE INSTALLED UPSLOPE OF THE SEDIMENT BASINS TO REDUCE THE VELOCITY OF CONCENTRATED FLOWS WHICH WILL HELP INCREASE THE EFFECTIVENESS OF THE SEDIMENT BASINS. WHEN THE SEDIMENT REACHES THE CLEANOUT LEVEL, IT SHALL BE REMOVED AND PROPERLY DISPOSED OF. 8. STORMWATER CONVEYANCE CHANNELS: 1.1. GRASS LINED CHANNELS - DURING THE INITIAL ESTABLISHMENT, GRASS LINED CHANNELS SHOULD BE REPAIRED IMMEDIATELY AND RE-ESTABLISHED IF NECESSARY. AFTER GRASS HAS BECOME ESTABLISHED, THE CHANNEL SHOULD BE CHECKED PERIODICALLY TO DETERMINE IF THE GRASS IS WITHSTANDING FLOW VELOCITIES WITHOUT DAMAGE. IF THE CHANNEL IS TO BE MOWED, IT SHOULD BE DONE IN A MANNER THAT IT WILL NOT DAMAGE THE GRASS. 1.2. RIPRAP-LINED CHANNELS - RIPRAP LINED CHANNELS SHOULD BE CHECKED PERIODICALLY TO ENSURE THE SCOUR IS NOT OCCURRING BENEATH FABRIC UNDERLINING OF THE RIPRAP LAYER. THE CHANNEL SHOULD ALSO BE CHECKED TO DETERMINE THE STONES ARE NOT DISLODGED BY LARGE FLOWS. 1.3. IF SEDIMENT IS DEPOSITED IN A GRASS -LINED CHANNEL, IT SHOULD BE REMOVED PROMPTLY TO PREVENT DAMAGE TO THE GRASS. SEDIMENT DEPOSITED IN A RIPRAP CHANNEL SHOULD BE REMOVED WHEN IT REDUCES THE CAPACITY OF THE CHANNEL. 9. CHECK DAMS SHALL BE CHECKED FOR SEDIMENT ACCUMULATION AFTER EVERY RUNOFF PRODUCING STORM EVENT. SEDIMENT SHOULD BE REMOVED WHEN IT REACHES ONE-HALF OF THE ORIGINAL HEIGHT OF THE MEASURE. REGULAR INSPECTIONS SHALL BE MADE TO INSURE TECH CENTER OF TECH DAM IS LOWER THAN THE EDGES. EROSION CAUSED BY HUGH FLOWS AROUND THE EDGES OF THE DAM SHOULD BE CORRECTED IMMEDIATELY. 10. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO ENSURE THAT. A GOOD STAND IS MAINTAINED. AREAS SHOULD BE FERTILIZED AND RESEEDED AS NEEDED, 11., THE STORMWATER MANAGEMENT FACILITIES SHOULD BE CHECKED REGULARLY BY THE OWNER TO ENSURE THAT IT IS STRUCTURALLY SOUND AND HAS NOT BEEN DAMAGED BY EROSION, THE EMERGENCY SPILLWAY SHALL BE CHECKED REGULARLY TO ENSURE THAT ITS LINING IS WELL ESTABLISHED AND EROSION RESISTANT. GRASS SHALL BE KEPT MOWN BELOW A HEIGHT OF 15" AND THE OUTLET SHOULD BE CHECKED FOR CLOGGING. VEGETATIVE PRACTICES 1. SURFACE ROUGHENING (3.29 - ALL AREAS WITH A GRADE STEEPER THAN 3:1 SHALL BE STAIR -STEP GRADED OR GROOVED (PLATE 3,29-4) TO AID IN GRASS ESTABLISHMENT, INCREASE INFILTRATION, AND TO SLOW' RUNOFF VELOCITIES. 2. TOPSOILING & STOCKPILING (3.30) - TOPSOIL WILL BE STRIPPED FROM AREAS TO BE GRADED AND STOCKPILED FOR LATER USE. STOCKPILES ARE TO BE STABILIZED WITH TEMPORARY VEGETATION OR TO HAVE SILT FENCE INSTALLED ALONG THE LOWER PERIMETER TO PROTECT DOWNSTREAM AREAS. 3. TEMPORARY :SEEDING X311 - AREAS NOT BROUGHT TO FINAL GRADE FOR .A PERIOD OF MORE THAN 30 DAYS SHALL BE STABILIZED WITH A TEMPORARY SEED MIXTURE ACCEPTABLE FOR THAT TIME OF YEAR. CRIMPING, PUNCH ROLLER -TYPE ROLLERS, OR TRACK WALKING MAY BE USED TO INCORPORATE STRAW MULCH INTO THE SOIL ON SLOPES IF STRAW IS TO BE USED, 4. MULCH (3.35) - PLANT RESIDUES OR OTHER SUITABLE MATERIALS SHALL BE APPLIED TO DISTURBED SURFACES TO PREVENT EROSION AND REDUCE OVERLAND FLOW VELOCITIES. THIS PRACTICE SHOULD BE APPLIED TO ALL SEEDING OPERATIONS, OTHER PLANTER MATERIALS WHICH DO NOT PROVIDE ADEQUATE SOIL PROTECTION BY THEMSELVES, AND BARE AREAS WHICH CANNOT BE SEEDED DUE TO THE SEASON BUT WHICH STILL NEED PROTECTION TO PREVENT SOIL LOSS. CRIMPING, PUNCH ROLLER -TYPE ROLLERS, OR TRACK WALKING MAY BE USED TO INCORPORATE STRAW MULCH INTO THE SOIL ON SLOPES IF STRAW IS TO BE USED. 5. EROSION CONTROL BLANKETS (3.36) - EROSION CONTROL BLANKETS WILL BE INSTALLED ON FILL SLOPES WITH A SLOPE GREATER THAN 2:1 FOLLOWING FINAL GRADING AND SEEDING. EROSION CONTROL BLANKETS WILL ALSO BE INSTALLED IN DITCHES WHERE POTENTIAL EROSIVE VELOCITIES MAY EXIST AS DETERMINED BY ENGINEERING CALCULATIONS. THIS WILL PROTECT FROM RILL AND GULLY EROSION. MANAGEMENT STRATEGIES 1. CONSTRUCTION WILL BE SEQUENCED SO THAT GRADING OPERATIONS CAN BEGIN AND END AS QUICKLY AS POSSIBLE. 2. SEDIMENT TRAPPING MEASURES WILL BE INSTALLED AS THE FIRST STEP IN GRADING AND WILL BE SEEDED AND MULCHED IMMEDIATELY FOLLOWING INSTALLATION. 3. TEMPORARY SEEDING OR OTHER STABILIZATION WILL FOLLOW IMMEDIATELY AFTER GRADING. 4. THE JOB SUPERINTENDENT SHALL BE RESPONSIBLE -FOR THE INSTALLATION AND MAINTENANCE OF ALL EROSION AND SEDIMENT CONTROL PRACTICES. 5. WITHIN 30 DAYS AFTER BEING NOTIFIED BY THE EROSION AND SEDIMENT CONTROL ADMINISTRATOR, THE TEMPORARY EROSION AND SEDIMENT CONTROLS CAN BE CLEANED UP OR REMOVED, AND ANY SEDIMENT TRAPS OR SEDIMENT BASINS CANL BE CLEANED OUT OR CONVERTED TO PERMANENT STORMWATER MANAGEMENT BASINS. PERMANENT STABILIZATION SEQUENCE OF CONSTRUCTION o BEGIN CONSTRUCTION ALL AREAS DISTURBED BY CONSTRUCTION SHALL BE STABILIZED WITH STRAW & � gas Q SEEDING IMMEDIATELY FOLLOWING FINISH GRADING. SEEDING SHALL BE DONE 1.) CONTRACTOR SHALL INSTALL CONSTRUCTION ENTRANCE, SILT FENCE AND PROTECTION AS WITH KENTUCKY 31 TALL FESCUE IN ACCORDANCE TO STANDARD AND c0 M FIRST STEP IN CONSTRUCTION. SPECIFICATION 3.32, PERMANENT SEEDING, OF THE VIRGINIA EROSION AND 2,) INSTALL SEDIMENT BASIN RISER AND ANTI -VORTEX PER SPECIFICATIONS AND DETAILS. SEDIMENT CONTROL HANDBOOK. ANY FERTILIZER AND LIME APPLICATIONS 3.) CONTRACTOR SHALL COORDINATE INSPECTIONS, AS REQUIRED BY THE COUNTY OF ALBEMARLE. SHALL IN ACCORDANCE WITH SOIL TEST RESULTS. ALL SEEDED AREAS WILL 4. AFTER RECEIVING ENVIRONMENTAL ENGINEERNG APPROVAL, CONSTRUCT THE STORM SEWER FROM BE STRAW MULCHED TO PROTECT T 0 AND TO PRESERVE AGAINST RILL EROSION R A Il p rri SOIL MOISTURE THAT WILL ENHANCE SEED GERMINATION. CRIMPING, PUNCH Nib N Q STR#154 TO STR#126, AND INSTALL THE TEMPORARY STORM PIPE TO THE NEWLY CONSTRUCTED ROLLER -TYPE ROLLERS, OR TRACK WALKING MAY BE USED TO INCORPORATE r - SEDIMENT BASIN. UPON FUNCTIONALITY OF TEMPORARY OUTFALL, REMOVE THE ABANDONED STRAW MULCH INTO THE SOIL ON SLOPES IF STRAW IS TO BE USED. w(D PORTION OF THE EXISTING 30" HPDE AS WELL AS THE EXISTING SEDIMENT TRAPS INSTALLED WITH C3� /GFADE BLOCK 29/35 STORMWATER RUNOFF CONSIDERATIONS 5.) BEGIN CLEARING, GRUBBING AND FINE GRADING OPERATIONS AS NECESSARY TO ACHIEVE FINAL Z V GRADES. CALCULATIONS OF RUNOFF BEFORE AND AFTER DEVELOPMENT INDICATE THAT 6.) AFTER SITE HAS REACHED SUBGRADE CONDITIONS, INSTALL UTILITIES, STORM SEWER AND BEGIN THERE WILL BE A NET INCREASE IN RUNOFF VOLUME AS A RESULT OF THE cn - ROAD CONSTRUCTION. INCREASE IN THE IMPERVIOUS SURFACES FOR THE DEVELOPMENT. THE 7.) PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO ALL DENUDED AREAS EXISTING STORMWATER MANAGEMENT POND SHALL BE CONVERTED TO A BMP V Q WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. FOR THE DEVELOPMENT WITHIN THIS WATERSHED, AND IT HAS BEEN DESIGNED TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT TO TREAT AND RELEASE THE RUNOFF AT REDUCED RATES. REFER TO THE W MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT FOR LONGER THAN 30 DAYS. UPPER BALLARD BMP CONVERSION PLAN FOR BMP LOADING, DESIGN SIZING, Q Lo � (° I N PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR CALCULATIONS, AND DESIGN DETAILS. CO ."�- MORE THAN ONE YEAR. all 8.) AFTER SITE IS STABILIZED AND PERMISSION IS OBTAINED FROM THE EROSION CONTROL INSPECTOR, MAINTENANCE I=i REMOVE SILT FENCING, INLET PROTECTION AND OTHER EC MEASURES. LZ GENERAL CONSTRUCTION NOTES FOR IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE 0 > E= 4 Z FOLLOWING CHECKED DAILY AND AFTER EACH SIGNIFICANT RAINFALL. THE LLOW EROSION AND SEDIMENT CONTROL PLANS ITEMS WILL BE CHECKED IN PARTICULAR: 1. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE " Q PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND 1. THE CONSTRUCTION ENTRANCE SHALL BE CHECKED DAILY FOR SOIL ,-- DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. BUILDUP. IF THE ENTRANCE BECOMES CLOGGED WITH SOIL AND FAILS TO 2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND PREVENT TRANSPORTATION OF SOIL ONTO THE ROADWAY, ADDITIONAL W MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE STONE, REPLACEMENT OF STONE, OR A WASH -RACK MAY BE REQUIRED. VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. 2. SILT FENCE SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND 3. ALL EROSION AND SEDIMENT. CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AT LEAST DAILY DURING PROLONGED RAINFALL. CLOSE ATTENTION SHALL 4. AS THE FIRST STEP IN CLEARING. THE APPROVED EROSION AND SEDIMENT CONTROL PLAN LL BE A COPY 0 F H SHALL BE PAID TO THE REPAIR OF DAMAGED SILT FENCE RESULTING FROM END MAINTAINED ON THE SITE AT ALL TIMES. RUNS AND UNDERCUTTING. SHOULD THE FABRIC ON A SILT FENCE 5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN DECOMPOSE OR BECOME INEFFECTIVE PRIOR TO THE END OF THE INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF-SITE BORROW OR EXPECTED USABLE LIFE AND THE BARRIER STILL BE NECESSARY, THE NORMAL WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION FABRIC SHALL BE REPLACED PROMPTLY. SEDIMENT DEPOSITS SHOULD BE CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING REMOVED AFTER EACH STORM EVENT. THEY MUST BE REMOVED WHEN 3a '11.11 ". AUTHORITY. DEPOSITS REACH APPROXIMATELY ONE-HALF THE HEIGHT OF THE BARRIER. 6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION ANY SEDIMENT DEPOSITS REMAINING IN PLACE AFTER THE SILT FENCE IS 42 CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS NO LONGER REQUIRED SHALL BE DRESSED TO CONFORM WITH THE EXISTING DETERMINED BY THE PLAN APPROVING AUTHORITY. GRADE, PREPARED, AND SEEDED. 7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES 0.77% AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. 3. DIVERSION DIKES SHALL BE INSPECTED AFTER EVERY STORM AND REPAIRS 8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED MADE TO THE DIKE, FLOW CHANNEL, OUTLET, OR SEDIMENT TRAPPING FILTERING DEVICE. FACILITY AS NECESSARY. ONCE EVERY TWO WEEKS, WHETHER A STORM 9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY EVENT HAS OCCURRED OR NOT, THE MEASURE SHALL BE INSPECTED AND f CI. I Rip - AND AFTER EACH RUNOFF PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR REPAIRS MADE IF NEEDED. DAMAGES CAUSED BY CONSTRUCTION TRAFFIC CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL OR OTHER ACTIVITY MUST BE REPAIRED BEFORE THE END OF EACH W/ Udder BE MADE IMMEDIATELY. WORKING DAY. 10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA. 11. ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL Depth=1 SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND 4. STORMWATER CONVEYANCE CHANNELS: OTHER DEBRIS. 4.1. GRASS LINED CHANNELS - DURING THE INITIAL ESTABLISHMENT, 12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION GRASS LINED CHANNELS SHOULD BE REPAIRED IMMEDIATELY AND I PER ZONING ORDINANCE SECTION 5.1.28. RE-ESTABLISHED IF NECESSARY. AFTER GRASS HAS BECOME 13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 ESTABLISHED, THE CHANNEL SHOULD BE CHECKED PERIODICALLY TO co OF THE CODE OF ALBEMARLE. DETERMINE IF THE GRASS IS WITHSTANDING FLOW VELOCITIES WITHOUT 14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT DAMAGE. IF THE CHANNEL IS TO BE MOWED, IT SHOULD BE DONE IN A SHALL BE LIMITED TO THE HOURS OF 7:OOAM TO 9:OOPM. MANNER THAT IT WILL NOT DAMAGE THE GRASS. 15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAN 4.2. RIPRAP-LINED CHANNELS -RIPRAP LINED CHANNELS SHOULD BE MAINTAINS LATERAL SUPPORT, OR ORDER TO MINIMIZE ANY HAZARD TO PERSONS, II ALL STORM SEWER INLETS. PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY CHECKED PERIODICALLY TO ENSURE THE SCOUR IS NOT OCCURRING PUBLIC STREET BECAUSE 0 SLIDES, SINKING, OR COLLAPSE. BENEATH FABRIC UNDERLINING OF THE RIPRAP LAYER. THE CHANNEL 16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR SHOULD ALSO BE CHECKED TO DETERMINE THE STONES ARE NOT CONVERT TO PERMANENT STORMWATER MANAGEMENT FACILITIES WHERE APPLICABLE DISLODGED BY LARGE FLOWS. > ALL EROSION CONTROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF THE SALE 4.3. IF SEDIMENT IS DEPOSITED IN A GRASS -LINED CHANNEL, IT SHOULD > z OF ANY LOT, UNIT, BUILDING OR OTHER PORTION OF THE PROPERTY. BE REMOVED PROMPTLY TO PREVENT DAMAGE TO THE GRASS.. 17. TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS SEDIMENT DEPOSITED IN A RIPRAP CHANNEL SHOULD BE REMOVED TO BE AT 75 LBS/ACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY TO WHEN IT REDUCES THE CAPACITY OF THE CHANNEL. CONSIST A 50/50 MIX OF ANNUAL RYEGRASS AND CEREAL WINTER RYE, OR IN MARCH AND APRIL TO CONSIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO 5. CHECK DAMS SHALL BE CHECKED FOR SEDIMENT ACCUMULATION AFTER CONSIST OF GERMAN MILLET. STRAW MULCH IS TO BE APPLIED AT 80LBS/100SF. EVERY RUNOFF PRODUCING STORM EVENT. SEDIMENT SHOULD BE REMOVED ALTERNATIVES ARE SUBJECT TO APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR. WHEN IT REACHES ONE-HALF OF THE ORIGINAL HEIGHT OF THE MEASURE. 18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND REGULAR INSPECTIONS SHALL BE MADE TO INSURE TECH CENTER ,OF TECH MULCH. AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED AT 90LBS/1000SF, DAM IS LOWER THAN THE EDGES. EROSION CAUSED BY HIGH FLOWS INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. FERTILIZER SHALL BE APPLIED AT AROUND THE EDGES OF THE DAM SHOULD BE CORRECTED IMMEDIATELY. 1000LBS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT PERMANENT SEEDING SHALL 6. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO ENSURE THAT A BE APPLIED AT 180LBS/ACRE AND CONSIST OF 95% KENTUCKY 31 OR TALL FESCUE GOOD STAND IS MAINTAINED. AREAS SHOULD BE FERTILIZED AND RESEEDED AND 0-5% PERENNIAL RYEGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS TO BE AS NEEDED. APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR. CALCULATIONS 19. MAINTENANCE: ALL 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 50% OF THE WET STORAGE PLEASE REFER TO THE DETAILS, STORM SEWER AND HYDRAULIC CALCULATIONSALL VOLUME IS FILLED WITH SEDIMENT. ED SEED AREAS ARE TO BE RESEEDED WHEN FOR THE PERFORMANCE OF THE STORM SEWER, DITCHES, AND SEDIMENT BASIN, NECESSARY TO ACHIEVE A GOOD STAND OF GRASS, SILT FENCE AND DIVERSION ALSO REFER TO THE WATER QUALITY CALCULATIONS FOR COMPLIANCE WITH DYKES WHICH ARE COLLECTING SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED THE CBPA REGULATIONS AND THE CORRESPONDING EXTENDED RETENTION POND 20. AND REPAIRED IMMEDIATELY. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE REMOVED SPECIFICATIONS 4*WQV , SIZING AND PLANTING SCHEDULE. ( ) WITHIN 30 DAYS OF FINAL SITE STABILIZATION, WHEN MEASURES ARE NO LONGER NEEDED, SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR. STORM SEWER PROFILE #154 -UPPER BALLARD POND DI-4AA, L=2.5' 42" ES -1 690 1 > l� TOP = 683.05 OUiFA JL 690 C -YL -i r-YI-17 665 660 1'=5' • �x U) _ W o Ln w J � gas Q o Iq >> 000 - c0 M (0 r- � to �o (0 0) co CD C cD L0 14- ' 114 II 4 II 4 II rri Il p rri J Q Nib N Q P OPOSED r - Z w(0 w(D LU(.0 C3� /GFADE 0 °C w -j 0 Z V wLL V) g a Z m a cn - O cc `. OCO J w 2 z Q V Q �10 -1Z 00 cc W p Q '` 0cc Q Lo � (° I N T�¢V V � CO ."�- 0 all cc 00 W �W I=i EXISTING LZ wLO Q) (t 0 > E= 4 Z GRADE ct cc a. LU .� " Q ;tlT i CD 90 ,-- t .y M, S 6'�-���- 0 Z W e W � zz,� I .aaI \ y�x 3F4 .�, , } .11 M,� -- x y ,. y, ! , h YFx r NORMAL CONNECTS 0 STR#155 167 3a '11.11 ". WSE=672.60 150 L.. H.P.D. F. OF 36" @ 0.69% 208 L.F. 0 42 f -I , ; . H.P.D.E. @ 0.77% EXISTING POND 24 .y. f CI. I Rip - W/ Udder yiing Filter F Min. Stone Depth=1 oIq See �et it Specificati O o .: NOTE: co in (O PROVIDE VDOT IS -1 FOR n in CO as II ALL STORM SEWER INLETS. 11 !! z D o D O 1.I > > -7 Fz z > z • �x U) Ln o Ln w J � n o Iq w 000 - c0 M (0 r- � to O (0 0) co CD c0 N cD L0 14- ' 114 II 4 II 4 II rri Il p rri 0'^ 0 to Nib N Q co0 � 00 r - w(0 w(0 w(D LU(.0 C3� tri Ire"� 1��i o l 675 670 ap bric ms o�4��LTH OF 1",P 0 �f �" 660 V `� �`4`--' Christopher C. Mulligan Lic. No. � 031672 w4 �IV ol�ss I ANAL E�6l� 12+50 13+00 O REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments DATE JAN. 23, 2014 w J a UU� w a J z 0 J Q O 0 M--�I �- S S (D 9 �e ^� W Z Z N= 04U) i w Z 0'^ 0 to Nib N Q co0 � a. cr Qr C3� U 0 °C w it 0 Z OU wLL V) g a Z J z cn - O cc `. OCO J w 2 z Q V Q r -1Z 00 cc W p Q '` 0cc Q Lo � (° I N T�¢V V � CO ."�- 0 all cc 00 W 0� J ' I=i Q) LZ wLO Q) (t 0 > E= 4 Z W ct cc a. LU h m9 " Q ;tlT i CD 90 w z 0 Z W 0 a W REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments DATE JAN. 23, 2014 FILE NUMBER 8053 SHEET 8of12 w J w L O it Vc � N a J g J06 ® J Q z Ir S MM W JN �- S S (D 9 �e O 06 U � ♦, �. L) ®® W > P� i w J co0 � cr z U III FILE NUMBER 8053 SHEET 8of12 REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments DATE January 31, 2013 SCALE 1 "= 300' CONTOUR INTERVAL 2 FOOT CL a ' v w rU O a.<3 06 Z5; .. Z t0 04 C 15� j 12U Z toN Oo N m J J � Q_ W(LO Vo°CW>0 O CL J Z O� w VQ �W a n 0 Q� Z E5 00) LU 0 cv coo LU o J LL z W U N U U 0) ? � �meW Z O 0 W d F-�-I REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments DATE January 31, 2013 SCALE 1 "= 300' CONTOUR INTERVAL 2 FOOT FILE NUMBER 8053 SHEET 9of12 CL co < LU MO(DA C\l a.<3 06 Z5; .. • j 12U '. -w • W(LO FILE NUMBER 8053 SHEET 9of12 .• -=no \/-� / 4��/ / V --_ ,G - 30 680 684 682 _ keshape Edge of Existing/ I / \ Buffer for Future Lots\ C(D � n_S to Stabiliz tion,— Install Perma-nA t " nil into Upper Ballard Pond & Remove — 56 Sediment Basin\& Pipe-Strf'1684 0- � �A �G- z A \ \ --1 /g 6 , J f \ \ \ EX INV.=669.27 Pro osE �Sediment E 686 \ < Existing Runoff into Lickinghole Creek Development Area & 15 Ac. Offsite ' \ i Golf Course Runoff to be Redirected �rto i-Ue� r -B and Field Pond ~ \ pp_ 688 i �/ / I I 1 � \ \��\ W.=657.01 !� \\ \ \ \ YH op C ristopher C. Mulligan \\ \ \ \ \ \ 10 031672 �� \ \ 1 \ �SSONAL �GExisting Drainage Areas Bypassing Upper Ballard Farm Pond DA = 15 acres DA = 31.6 acres AREA 1 CN = 61 CN = 65 Pre -Developed Drainage Areas Draining into Upper Ballard Farm Pond DA = 57.2 acres DA = 37.9 acres CN = 55 CN = 58 AREA 2 DA = 1.84 acres CN = 92 OT Drive Blk. 1 DA = 4.0 acres CN=65 (Pond & WPO Buffer) Post -Developed Drainage Areas J Draining into Upper Ballard Farm Pond DA = 110.1 acres - \ �, o & DA o 42.54 acres AREAS 1 +2 _ 6.4 /o Impervious 54.7 /o Impervious \ Offsite Onsite ** ASBUILT POND TOPO BY ROUDABUSH, DEC. -2013 REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments DATE Jnauary 31, 2013 SCALE 1"=50' CONTOUR INTERVAL 1 FOOT 0Z ` J a T Uw w UL C3 mZ N '' ®v� J_ oZ5 > co O cr� JW8 U <>J Q U COW 0'4' Z tp C%1 55 rno � W 010 No g10, ^ g s z F—j CL Q 0 U 0 Z 00 a Z Wo Z v� g w J Z o W UQ r W a� 0 Q� Z� UN O� QCt) Vj O 1-+-1 Cr �h~0>0o LU Z W �� Z Uj CL LU 0 (t 4 ` wt co T co W Z O O w REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments DATE Jnauary 31, 2013 SCALE 1"=50' CONTOUR INTERVAL 1 FOOT FILE NUMBER 8053 ---------------------------------- SHE". 10 of 12 0Z J Wo. w UL C3 mZ N '' ®v� J_ oZ5 > co J Y cr� JW8 U <>J Q 00 m COW 0'4' p cr WO (IQ. FILE NUMBER 8053 ---------------------------------- SHE". 10 of 12 REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments DATE January 31, 2013 SCALE V=51 CONTOUR INTERVAL 1 FOOT z vi � w � ZJ O W uL Q Z N ®� U . Z W Z t0 o cn rn :5 w 0 O 61 ��m �a O® CL 2w j0 OZ O U w ILL Q DI -213, L=8' W DI -313, L=8' UQ D1-41313, L=8' Q Oo ccQ� Cl 0 �� U N a4 00 �? U N CO PL4 CC W c Z Orn Q. 4.11 ��� 0 TOP = 685.91 ,2b TOP = 685.1 �� TOP = 684.25 - �� 700 DI-4AA, m <11.111.1 z g 0 Z o 6 TOP = 68 0 .07 o Ln NOTE: N w CL N Z W '� It L o 'n PROVIDE INSULATION ALONG WATER SERVICES WHEN & OF __:1 00 Ki o M n f- a Q + Z C r 1 ± + r i COVER CANNOT BE MAINTAINED. N 66 695 ~ r H m w h + T- 0 N Q �- N w N ~ J N J w PROVIDE VDOT IS -1 FOR ALL j II TIE TO EX. 8 D.I. /L X¢ UJ LU N o 1111. H 0 UU Nw STORM SEWER INLETS. D • REMOVE'EX. 8" VALE OFF z w I � W + N m Z W > n- > n- CL CL °- °- SHEET 13 OF 21 OF THE SITE PLAN J & BLO ASSEMBLY 0>w 0 ow Z N9F- r 111 FOR PERMANENT OUTFALL INTO 690 J F,: + J 2474 94SD I -- LU UPPER BALLARD POND. U 2 1 1104.813K -Val D -- - - - - FIRE HYDRANT 8" 3)8 ( 8"CTEE G.V. FUTURE DEVELOPMENT O ASSEMB IN. 685 II COVER CD -1 _ _ - _ OJ 0 CL 5�g w S1 0.9' C 0.9, EAR , CL AR L �..:..::.... PLUG FUTRE CD- 25 YR. WSE i _ N121 L.F. OF EX. 0" �8' - 680 H. _u0.9' — CLEAR SAG STA 22+45.17 BULK GRADE 1 nE SAG EL V.682.98 226 L.F. OF T » 6 HPDE. @ MPORARY 0.77% 60 RCP RISER 5" H.P.D.E. 92 OF 30" .:s �.����.� &���� _ _��`� ' ° TOP=6 6.75 H.P.D.E. .F. @ 0.917,92 L. <:�x OF 30" � ,�� � �� �, a� �� ��.. �. �° � �j ` �:�,--arc y H.P.D. ©0.91 %° 150 L.F. OF 3y.. PROPOSED SEDIME14T BASIN 675 (SEE VOLUMES, EC. PH 1 & 2) H.P.D.E. @ 0.69%az},' 15" H.P.D.E. 3 H.P.D.E. lb7 208 L.F. OF � � � ifs OP1 N — � .. 2» 12 CLEAR;=?� 0 `v LO 8" PVC SAN. SEWER r- r iin �- (EX MH 1-18 TO MH 15) (U.B. PERM. UTFALL) 23 c. y. of Cl. I Rip -Ra -�- — — _ 670 r F 8" PVC S L INV. 672.06 w Underlying Filter Fal; is II x � � � (EX. MH 1 18 TO EX. MH 1-17) Min. Ston See Detail Depth=18 Specification � w .. o_ 04 `° V) °�° � n 249.6 L.F. OF — \ z EXISTING 42" 665 co co RCP @ 1.68% -- PROFILE OFFSET -3,' PROFILE PROFILE OFFSET 35 CL w o j z_ o 0 j 0 j o > r` 01 \ > j > (01 GOLFVIEW DESIGN EX TD z z Z? Z z z (0 660 EXISTIM3 GROUND PROFILE CL Z 151.2 L.F. OF 1�I I EXISTING & TEMPORARY rn 00 M > EXISTING 42" \ SEDIMENT BAS N OUTFALL (3 0) (6 f) Uri 00 6 N 41-, d rico cli c� r7 00 d= N 4 O _ 0'i O Z RCP @ 5.3% � 00 ,.r) 00 � 0o � cfl 00 � 04 � � � � 00 0o ao 00 00 � 0) co — 00 � � 00 � O IIS x IIO CO xCO 11 x L0 ]I L0 00 II x00 d' II x 11� x 00 IIS x00 II 11 x00 eq IIS x 1itn 00 x00 IIdt x X W CO W CO Ld C0 O C WLLJ CO L'i CLd Cfl WC Ld WCr +50 18+00 18+60 19+00 19+60 20+00 20+50 21+00 21+0 22+0 22+50 23+00 23+60 24+00 24+50 25+50 26+00 a\\ �L,r 1i op `\ SEDIMENT BASIN SPECIFICATIONS w \ ✓ TOP OF DAM(AFTER BULKGRADE)=684.00 660 \ 650 o � C TOE OF DAM(AFTER BULKGRADE)=672.00U. DESIGN HIGH WATER=680.93 (25 -YEAR) C) hristopher C. Mulligan 60" RISER TOP=679.85 - ,� � o z Lic. No. EX. 42 BARREL INV.=669.27 o -4- � c v \ 031672 �4�12" o�FS DEWATERING ORIFICE=676.75 645 ( .I -I. o J - `-- _ N� S/oNALNOTE: CLEANOUT ELEV.=674.75 � a o- EXIST. GRADES PROVIDE �Z EXCESSIVE SEDIMENT BASIN STORAGE W/ z 'z z o Z CONSTRUCTED BERM - TOP OF BERM = ,_ z 682.50.(SEE STAGE -STORAGE TABLES)"' SQ N Ln a TEMPORARY SEDIMENT BASIN OUTFALL boo 26+50.... w w w wo 27+00 27+50 28+00 28+50 29+00 29+50 30+00 30+50 .31+00 31+50 32+00 32+50 33+00 OLD TRAIL -80 \BLOCK 3:1UPPER BALLARD WPO.DWG REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments DATE January 31, 2013 SCALE V=51 CONTOUR INTERVAL 1 FOOT z vi � w � ZJ O W uL Q Z N ®� U . Z W Z t0 o cn rn :5 w 0 O 61 ��m �a O® CL 2w j0 OZ O U w ILL Q O� W Z UQ r Q Oo ccQ� Cl 0 �� U N a4 00 �? U N CO PL4 CC W c Z Orn Q. 4.11 g LU 0 Z W O REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments DATE January 31, 2013 SCALE V=51 CONTOUR INTERVAL 1 FOOT FILE NUMBER 8053 SHEET 11 of 12 z vi ZJ w oo W uL Q Z N ®� .1 06 00 . Z ..I N W 5 Y w 0 O M p W ��m �a O® CL 2w FILE NUMBER 8053 SHEET 11 of 12 REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments DATE January 31, 2013 SCALE 1 " = 501 CONTOUR INTERVAL 1 FOOT V, ` Z a U w W Co P� 0 Q v Co cm F_�O Z ®� 0 }_ >N F - D2. U ® O Irv" OW OLD TRAIL EXISTING BALLARD FIELD BMP Type 1124 -hr 10-YearRainfall=5.55 OLD TRAIL EXISTING BALLARD FIELD BMP Type 1124 -hr 10-YearRainfall=5.55" 2 04 Cf) W E-� Z o N m CQ Q g!:. Prepared by Hewlett-Packard Company Printed 6/5/2014 Prepared by Hewlett-Packard Company Printed 6/5/2014 D k Q Existing Concrete Spillway -Primary Outfall Ua cW;@) HydroCAD010.00 s/n 08126 02013 HydroCAD Software Solutions LLC HydroCAD®10.00 s/n 08126 @2013 HydroCAD Software Solutions LLC Z 00 w o Cn �� JZ J Q 0( wzc RAISE DAM RAISE DAM VQ r ►� Summary for Subcatchment 4S: Pre Developed Drainage -UB Pond AREA 721 Summa for Pond 2P: Existing Pond g J0 04 4-6t INCHES 4-6t INCHES MINIMUM MINIMUM TOP=380.45 TOP=380.45 Qu r W Existing Farm Pond ignored in computations. Results are conservative Inflow Area = 100.940 ac, Inflow Depth > 1.38" for 10 -Year event Short Version BMP computations �0 O Inflow = 68.41 cfs @ 12.63 hrs, Volume= 11.600 of Vl� U ? LLI 's `O�F� AlIbemadeCountyWaterProtection ordinance Modified 'Simp4e Method V N P o Runoff = 68.41 cfs @ 12.63 hrs, Volume= 11.600 af, Depth> 1.38" Outflow = 18.62 cfs @ 13.90 hrs, Volume= 9.930 af, Atten= 73%, Lag= 76.5 min W �i L=25.65' L=25.65' ^5�O �W _ = Primary 18.62 cfs @ 13.90 hrs, Volume 9.930 of Z 0 W Inv = 679.05 Inv = 679.05 � 0 Plan old Trail vtltagetupper Ballard) Water Resources Area Lickinghole Basin Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 5.00-24.00 hrs, dt= 0.05 hrs Routing by Stor-Ind method, Time Span= 5.00-24.00 hrs, dt= 0.05 hrs / 2 '4 __._.___.�___._..__ Preparer: Date06-Jun-14 ________ Type II 24 -hr 10 -Year Rainfall=5.55" Starting Elev= 672.62' Surf.Area= 161,964 sf Storage= 1,027,001 cf g g I L� L=6.0' NWSE Inv = 672.60 - __._-.------,__-_ Area (ac) CN Description Peak Elev= 673.73' @ 13.90 hrs Surf.Area= 198,095 sf Storage= 1,223,664 cf (196,663 cf above start) Flood Elev= 679.50 Surf.Area= 272,368 sf Storage= 2,567,946 cf (1,540,945 cf above start) Project Drainage Area Designation > Western Bulkgrade & Portion of Blk. 113 57.200 55 Woods, Good, HSG B -- _---------- 37.900 58 Meadow, non -grazed, HSG B * 1.840 92 Old Trail Drive Plug -Flow detention time= (not calculated: initial storage exceeds outflow) OLD TRAIL POST -MODIFIED BALLARD FIELD BMF 100- Year Rainfall= 13. L storm pollutant ex 0 in unds, L = P Pj)RvM2 j [ C(A)2.72 )' pa ((, f3Y mean runof(coefficent, Rv= 0 05 + 4;aae(I), .4.000 65 (Westside currently to Ballard Pond Center -of -Mass det. time= 112.0 min (1,019.6 - 907.6) Prepared b Hewlett-Packard Company Printed 6/5/2 P Y P Y Pi l small storm correction factor, 0.8 100.940 57 Weighted Average 9 9 Volume Invert AvaiLStorage Storage Description HydroCAD®10.00 s/n 08126 © 2013 HydroCAD Software Solutions LLC I percent imperviousness P annual precipitation; 43 inAibemarle z Tc Length Slope Velocity Capacity Description #1 656.00' 2,707,013 cf Custom Stage Data (Prismatic)Listed below (Recalc) Stage a for Pond 2P: Upper Ballard Pond g 9 pp A project area €n ages in subject draihage area, A 4254;;;1 C pollutant concentration, mgt/ or ppm target phosphorus (min) (feet) (ft/ft) (ft/sec) (cfs) Elevation Surf.Area Inc.Store Cum.Store ULT. RO UTI N t factor applied to RR 26.9 250 0.0350 0.16 Sheet Flow, Elevation Discharge Primary Storage Elevation Discharge Primary Storage v required treatment volume in cy, 0.5' over impery. area = A(1)43560(0.5112)127 Grass: Dense n= 0.240 P2= 2.50" (feet) (sq -ft) (cubic -feet) (cubic -feet) (feet) (cfs) (cfs) (cubic -feet) (feet) (cfs) (cfs) (cubic -feet) RR required removal , t.(post) - f x L(pre)656.00 12.1 680 0.0350 0.94 Shallow Concentrated Flow, 95 0 0 657.00 3,640 1,868 1,868 656.00 656.25 0.00 0.00 0.00 0.00 0 669.25 0.00 0.00 566,718 135 669.50 0.00 0.00 594,058 %RR removal efficiency, RR1001IL(post) Woodland 5. fps 658.00 8,868 6,254 8,122 656.50 0.00 0.00 491 669.75 0.00 0.00 622,701 Impervious cover GompuYation (values m feet s, square teet) Fl _,,, _ _ .,,,_. ha l 0 0 2 75 3.67 Parabolic Channel 16.2 2,68 0.025 I 659.00 14,615 11,742 19,863 656.75 0.00 0.00 1,068 670.00 0.00 0.00 652,648 ;item - W=4.DD D=0.50 Area=1.3 sf Perim=4.2 n- 0.040 660.00 22,747 18,681 38,544 657.00 0.00 0.00 1,868 670.25 0.00 0.00 683,768 pre development _ Area post development _ _ - Area - - -- 3 610 55.2 Total 661 00 32 391 27 569 66 113 657 25 0 00 0 00 • 2,941 670 50 0 00 0 00 715,932 ;Roads Length Width subtotal Length, width subtotal ... a o .. 0; o a o= 662.00 38,832 35,612 101,725 657.50 0 00 0 00 4,341 670.75 0.00 0.00 749,139 0 o o7 a1. o Q OLD TRAIL EXISTING BALLARD FIELD BMP Type 1124 -hr 100-YearRainfall=13.64" 663.00 45,132 41,982 143,707 657.75 0.00 0.00 6,068 671.00 0.00 0.00 783,391 . . -- __ "°i Prepared by Hewlett-Packard Company Printed 6/5/2014 664.00 50,397 47,765 191,471 658.00 0.00 o.Qo 8,122 671.25 0.00 0.00 818,595 riT� -~~ _.:_ 0 0' __-.___.-._..__... ___ �_ ___. ° °' _ _. __.�.. __ __-_-.___ Driveways Length width no suhtotal Length "" rWidth no subtotal - ( andwa,iks- a ° 0 �)0 --0 o. of o o o 0, - o� o o o o, o .. 0 R W� -� HydroCAD®10.00 s/n 08126 ©2013 HydroCAD Software Solutions LLC Events for Subcatchment 4S: Pre Developed Drainage -UB Pond 665.00 56,040 53,219 244,690 666.00 60,412 58,226 302,916 667.00 70,469 65,441 368,356 668.00 86 321 78 395 446 751 658.25 658.50 658.75 659.00 659.25 0.00 0.00 0,00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 10,518 671.50 0.00 0.00 854,664 13,274 671.75 0.00 0.00 891,595 16,389 672.00 0.00 0.00 929,391 19,863 672.25 0.00 0.00 968,074 23,771 672.50 0.00 0.00 1,007,670 ' "" "�`" `- -"" - Parking Lots. 1 2' 3 4' ° .... ° .. ......... ° .. _....... °' Event un ff e h R o Volum Dept 669.00 101,540 93,931 540,682 659.50 0.00 0.00 28,187 672.75 1.14 1.14 1,048,179 ....... . o, ( 0 0 o P (cfs) (acre-feet) (inches) 670.00 122,393 111,967 652,648 659.75 0.00 0.00 33,111 673.00 4.96 4.96 1,089 602 Gravel areas Area Area 'e' 671.00 139,092 130,743 783,391 660.00 0.00 0.00 38,544 673.25 10.28 10.28 1,132 783 �.__ x o 70 0 x 0.70 „ o; 2 -Year 6.40 2.017 0.24 672.00 152,908 146,000 929,391 660.25 0.00 0.00 44,532 673.50 16.75 16.75 1,178,571 b I Structures Ates na sybtotal Area no su tato ° 0 0 o 0 .. 0 0 5 -Year 23.00 4.891 0.58 10 -Year 68.41 11.600 1.38 673.00 167,514 160,211 1,089,602 674.00 209,213 188,364 1,277,965 660.50 660.75 0.00 0.00 0.00 0.00 51,123 673.75 24.20 24.20 1,226,965 58,317 674.00 32.50 32.50 1,277,965 o o _Q _y 0 0 25 -Year 158.54 24.197 2.88 675.00 214 034 211,624 1,489,589 661.00 661.25 0.00 0.00 0.00 0.00 66,113 674.25 41.58 41.58 1,330,419 74,412 674.50 51.38 51.38 1,383,174 Actively -grazed pasture & Area Area aids and cultivated turf x 4.08 = D: x a:a8 = yµ" ° 50 -Year 256.73 37.940 4.51 678.00 246,794 691 242 2 180 831 679.00 260,835 253,815 2,434,645 661.50 0.00 0.00 83,114 674.75 61.85 61.85 1,436,231 ._ "_ __"" ._ W "` Area Active crop land: Area J 4.25 __. l 100 -Year 427.21 62.027 7.37 680.00 283,900 272,368 2,707,013 661.75 662.00 0.00 0.00 0.00 0.00 92,218 675.00 72.95 72.95 1,489,589 101,725 675.25 84.64 84.64 1,543,438 025 ... _ ._.. _. Q :Other lmperuious Areas 662.25 0.00 0.00 111,629 675.50 96.89 96.89 1,597,971 OLD TRAIL EXISTING BALLARD FIELD BMP Type 1124 -hr 10-YearRainfall=5.55 Device Routing Invert Outlet Devices 662.50 0.00 0.00 121,928 675.75 109.69 109.69 1,653,185 ._ . _ _.."..".� __w_.._....,.� _._._........ „Qa°_ _...._ _m .._...____.._ us Cover / ro� n,r Prepared b Hewlett-Packard Company Printed 6/5/2014 , P Y P Y #1 Primary 672.62 6.0 long x 19.0 breadth Broad -Crested Rectangular Weir 662.75 0,00 0.00 132,620 676.00 123.00 123.00 1,709,083 I(pre) """"" 1 ost (p ! HydroCAD®10.00 s/n 08126 ©2013 HydroCAD Software Solutions LLC Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 663.00 0.00 0.00 143,707 676.25 136.82 136.82 1,765,662 Rv(post) i v Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 663.25 0.00 0.00 155,154 676.50 151.11 151.11 1,822,925 Das �za 6 Summary for Subcatchment 8S: Pre -Developed - Lickinghole Runoff (Redirect to Ballard Pon 663.50 0.00 0.00 166,931 676.75 165.87 165.87 1,880,869 New Development (Far Development Areas, existing imperulous cover<- 20%) _ __ _.._. _ Y x� - - - Primary OutFlow Max=18.58 cfs @ 13.90 hrs HW=673,73' TW=65.6.00' (Fixed TW E(ev= 656.00') L1=Broad-crestied Rectangular Weir Weir Controls 18.58 cfs 2.78 fps) g ( @ 663.75 664.00 0.00 0.00 0.00 0.00 179,036 677.00 181.08 181.08 1,939,497 191,471 677.25 196.73 196.73 1,998,806 yc f I (pre)' Rv(pre) L(pre} L(post) ' RR °r°RR Area Type a 23 58 6$ 118 a1 58 36 4g°!o j Deyelopmen# Area Q.g:: o) o:3z aa1 4ss4: Drinkin WaterWatersheds 1 5 - Runoff = 84.03 cfs @ 12.20 hrs, Volume= 7.502 af, Depth> 1.93" _ _ = by SCS TR 20 UH SCS, Weighted CN, Time Span 5.00 24.00 hrs, dt 0.05 hrs _ OLD TRAIL EXISTING BALLARD FIELD BMP T e 1124 -hr 100-YearRainfall ?3.64 yp 664.25 664.50 664 75 0.00 0.00 0.00 0.00 0.00 o.o0 204,247 677.50 212.81 212.81 2,058,799 217,375 677.75 229.30 229.30 2,119,473 230 856 678:00 246.20 246.20 2,180,831 ��s., 1 pn 37R 4.;,.,„",82PCa g .. ......... .. _ ...._... ooh 874 6744_5s.6wraa°ra otheeRurarLaria _... Runoff _ method, _ _ Prepared by Hewlett-Packard Company Printed 6/5/2014 665.00 0.00 0.00 244,690 678.25 263.49 263.49 2,242,968 qet ��1:j _^ Type [124 -hr 10 -Year Rainfall=5.55" • min. values HydroCAD®10.00 slln 08126 ©2013 HydroCAD Software Solutions LLC 665.25 0.00 0.00 258,836 678.50 281.18 281.18 2,305,983 Area (ac) CN Description AREA 665.50 0.00 0.00 273,256 678.75 299.23 299.23 2,369,875 Redevelopment Development Areas, existing [mpervlous cover> 24°14 p _.".__e ___ .,.tA i .,,.,.-,_ .�._ 0, },....," _.."...,..._._.,._".____._ C ( f i I:(pre) * Rv(pre) L(prey C(post) . RR %RR Area Type s 0.23 59.65 118.01 64 32 S5°(°€ Development Area . ...... * 15.000 61 Golf Course * 31.600 65 Future Westside Events for Pond 2P: Existing Pond AREA 2 Pre 665.75 666.00 666 25 0.00 0.00 0 00 0.00 0,00 0 00 287,949 679.00 317.66 317.66 2,434,645 302,916 679.25 345.13 345,13 2,500,575 318,333 679 50 393 88 393 88 2,567,946 a:a5.: 6.48 5s Ot. i 53 49 ;: g19u Dunking Water Vlatersheds p . 1 Wo 06 . -_- a.-, 67"ga µ so as :', ., , , a°a Other Rural. Land. W_ _____. _ . 46.600 64 Weighted Average Event InfloHv Primary Elevation Storage -development (cfs) (cfs) (feet) (cubic -feet) U e r B a I I a rd Routing 666.50 666.75 0.00 0.00 0.00 0.00 334,379 679.75 455.41 455.41 2,636,758 351,053 680.00 527.46 527.46 2,707,013 Ballard Pond Tc Length Slope Velocity Capacity Description pp 2 -Year 6.40 1.70 672.84 1,062,469 667.00 0.00 0.00 0.00 0.00 368,356 680,25 597.99 597.99 2,778,369 680.50 ,Upper (min) (feet) (ft/ft) (ft/sec) (cfs) 667.25 386,469 651.04 651.04 2,850,488 25.0 Direct Entry, 5 -Year 23.00 5.63 673.11 1,108,463 667.50 0.00 0.00 405,572 10 -Year 68.411 18.62 673.73 1,223,783 667.75 0.00 0.00 425,666 STEP 4:coMRUTEPHOSPHOROUS LOADING FOR ONSITEIOFFSITE DRAINAGEAREAsOLD TRAIL EXISTING BALLARD FIELD BMP Type 1124 -hr 100-YearRainfall=13.64" 25 -Year 158.54 50.21 674.78 1,443,076 668.00 668.25 0.00 0.00 0.00 0.00 446,751 468,807 Prepared by Hewlett-Packard Company Printed 6/5/2014 50 -Year 256.73 91.47 675.85 1,674,619 668.50 0.00 0.00 491,814 The phosphorous loading factor (Fpost) for onsite areas is based upon the post developed percent p p (p ) - p HydroCAD®10.00 s/n 08126 © 2013 HydroCAD Software Solutions LLC 100 -Year 427.2 7 171.19 677.52 2,063,684 668.75 000 0.00 51.5,772 impervious cover even When those areas are opted out of the RMA (use Table 1) 669.00 0. 00 0.00 540,682 Events for Pond 2P: Upper Ballard Pond Events for Subcatchment 8S: Pre -Developed - Lickinghole Runoff (Redirect to Ballard Pond) " Lpost m A Fpost QQ AREASS Elevon Storage Event In(Primary Event Runoff Volume Depth Oct (afss) ) (feet) (cubic -feet) A(acres) 1(%) Fpost ,Lpost. (cfs) (acre-feet) (inches) 2 -Year 81.22 12.23 673.33 1,146,553 4.572 Old Trail Drive & Portion Block 1 2 -Year 14.91 1.812 0.47 5 -Year 126.08 26.08 673.81 1,238,496 5 -Year 36.76 3.635 0.94 10 -Year 211.07 60.59 674.72 1,429,666 015; Q.00.0 10 -Year 84.03 7.502 1.93 25 -Year 351.82 132.01 676.16 1,745,995 €i 15 0.000 25 -Year 165.79 14.265 3.67 50 -Year 493.61 213.24 677.51 2,060,323 Q 1a 0:000 50 -Year 249.84 21.331 5.49 100 -Year 727.42 382.82 679.44 2,552,429 W.Blot l�°96/3C 01v Q000 : 100 -Year 389.84 33.347 8.59 Block 3A 5 1E1 80 1 8Q 9:173 RevisedlASBUILT 40 o:Qoo {portion'fo Ballartl} - ype - r -ear am a = . OLD TRAIL POST -MODIFIED BALLARD FIELD BMP WType 1124 -hr 10 -Year Rainfall=5.55" Future uuet 350 5€� 152 54.263 (includes 291.35) Prepared by Hewlett-Packard Company Printed 6/5/2014 Prepared by Hewlett-Packard Company Printed 6/5/2014 HydroCAD®10.00 s/n 08126 © 2013 HydroCAD Software Solutions LLC H droCAD® HydroCAD Software Solutions LLC 10.00 s/n 08126 © 2013 Y _ TOTAL 68.008 The phosphorous loading factor (Fexist) for offsite areas is based upon'.the existing percent Summary for Subcatchment 3S: Offsite Drainage Summary for Pond 2P: Upper Ballard Pond impervious cover (use Table 1A). Events for Subcatchment 3S: Offsite Drainage Existing Farm Pond ignored in computations. Results are conservative and include addition of offsite Inflow Area - 1.56.640 ac, Inflow Depth= 2.05" for 10 -Year event golf course drainage. (Currently drains to Lickinghole Creek) Event Runoff Volume Depth Inflow = 211.07 cfs @ 12.07 hrs Volume= 26.701 of Lexist = A * FexistRunoff = 78.34 cfs @ 12.63 hrs, Volume= 13.526 af, Depth '= 1.42" (cfs) (acre-feet) (inches) Outflow = 60.59 cfs @ 13.13 hrs, Volume= 26.641 af, Atten= 71%, Lag= 63.3 min 2 -Year 7.83 2.439 0.26 Primary = 60.59 cfs @ 13.13 hrs, Volume= 26.641 of A(acres) I(°Jo) Fpost Lpost 36 t0 3 33 0 24 8,841 Offsite Runoff by SCS TR -20 method, UH=SCS, Weighted -Q, Time Span= 1.00-48.00 hrs, dt= 0.05 hrs 5 -Year 26.86 5.781 0.61 STEP 5 0 3 33 (124 0:122 offsite Type 11 24 -hr 10 -Year Rainfall=5.55" 10 -Year 78.34 13.526 1.42 Routing by Stor-Ind method, Time Span= 1.00-48.00 hrs dt= 0.05 hrs / 2 1 3tf 3 33 €1240.317 Offsite 25 -Year 180.27 28.002 2.94 Starting Elev= 672.60' Surf.Area= 161,672 sf Storage= 1,023,764 of 15 alt 8 €13 5,579 Qolf Course Redirect Area (ac) CN Description 50 -Year 291.27 43.755 4.60 Peak Elev= 674.72' @ 13.13 hrs Surf.Area= 212,679 sf Storage= 1,429,631 cf (405,867 cf above start) 57 �A 8 2'1.274 Current GolfCourse, Drainage 200 55 Woods, HSG B 57.00s, Good, 00 -Year 483.87. 71.321 7.50. d Elev= 680.00' Surf.Area= 283 900 sf Storage= 2 707 013 cf (1 683 Flood ,248 cf above start) .............€til 36'09 37.900 58 Meadow, non -grazed, HSG B TOTAL 15.000 61 >75% Grass cover, Good, HSG B Plug -Flow detention time= 943.1 min calculated for 3.139 of (12% of inflow) SELECT BMP (from. Table 4) FOR EACH DRAINAGE AREA WHICH IS ,SERVED BY A * 4.000 65 Adjacent Buffer Area 114.100 57 Weighted Average �+ QQ AREAS � Center -of -Mass det. time= 145.5 min ( 1,011.2 - 865.7 ) 'BMP AND CALCULATE THE LOAD REMQVED, Lr: oc2 Tc .Length Slope Velocity Capacity Description Volume Invert AvaiLStorage Storage Description Onsite (kom step 4) (min) (feet) (ft/ft) (ft/sec) (cfs) #1 656.00' 2,850,488 cf Custom Stage Data (Prismatic)Listed below (Recalc) 26.9 250 0.0350 0.16 Sheet Flow, Lpost BMFEFF(°%) DMIGl Lrp Grass: Dense n=0.240 P2=2.50" Elevation Surf.Area Inc.Store Cum.Store 68:01 50 RI"T 11. 34.004 12.1 680 0.0350 0.94 Shallow Concentrated Flow, (feet) (sq -ft) (cubic -feet) (cubic -feet) 0.00 SQ RET It 0.000 Woodland Kv= 5.0 fps 656.00 95 0 0 0.00 a0 RET'It ' 0.000 Lrp'; Lpost *!BMP EFF1150 16.2 2,680 0.0250 2.75 3.67 Parabolic Channel, 657.00 3 640 1,868 1,868 0, 100 W=4.00' D=0.50' Area=1.3 sf Perim=4.2' n= 0.040 658.00 8,868 6,254 8,122 >: 0.000 55.2 3,610 Total 659.00 14,615 11,742 19,863 TOTAL 34.004 660.00 22,747 18,681 38,544 Offsite (from Step 4) OLD TRAIL POST -MODIFIED BALLARD FIELD BMP WType 1124 -hr 10- Year Rainfall=5.55" 661.00 32,391 27,569 66,113 Prepared by Hewlett-Packard Company Printed 6/5/2014 662.00 38,832 35,612 101,725 Lexist BMP EFF (%) DESIGN Lre HydroCAD®10.00 s/n 08126 02013 HydroCAD Software Solutions LLC 663.00 45,132 41,982 143 707 36.09 5o RET sl 18.046 664.00 50,397 47,765 191,471 0:00 0.000 Summary for Subcatchment 4S: Post Developed Drainage 665.00 56,040 53,219 244,690 0.32 0,000 Lie= Lexist' BMP EFF/104 Events for Subcatchment 4S: Post Developed Drainage 666.00 60,412 58,226 302,916 5:58 o.00Q Existing Farm Pond ignored in computations. Results are conservative 667.00 70 469 65,441 368 356 2j<27 0;090 Event Runoff Volume Depth 6168.00 86,321 78,395 446,751 TOTAL 18.046 Runoff = 199.32 cfs @ 12.07 hrs, Volume= 13.175 af, Depth= 3.72 (cfs) (acre-feet) (inches)6169.00 (inches)Post-Developed 101,540 93,931 540;682 If total Lr (summation of Lrp from onsite and Lpre from offsite areas) is "greater than or equal to RR; Runoff by SCS TR720 UH=SCS, Weighted -Q, Time Span= 1.00-48.00 hrs, dt= 0.05 hrs 2 -Year 80.89 5.292 1.49 D Drainage i n a e th through u h g g 670.00 122,393 111,967 652, 648 selected BMP (s),are adequate. method, 5 -Year 123.85 8.103 2.29 671.00 139,092 130,743 783,391 Type II 24 -hr 10 -Year Rainfall=5.55" 10 Upper Ballard. Pond 199.32 13.175 3.72 pp 672.00 152,908 146,000 929,391 REMOVAL SUMMARIES.& BMP DESIGN OPTION VOLUME Area (ac) CN Description -Year 25 -Year 311:83 20.985 5:92 673.00 167,514 160,211 1,089,602 674.00 209,213 188,364 1,277,965 Lr=.Lrp t':Lre 1.840 92 Urban commercial, 85% imp, HSG B 50 -Year 417.86 28.542 8.05 675.00 214,034 211,624 1,489,589 21.800 80 Future 38% avg. imp, HSG B * 100 -Year 585.55 40.760 11.50 678.00 246 794 691,242 2 180,831 13.800 85 Future 1/8 acre lots & Commercial 65% imp, HSG B Lr = 52.05 * 5.100 90 1/8 acre lots & Commercial 65% imp, HSG B 679.00 260,835 253,815 2,434,645 42.540 83 Weighted Average ��tiTH OF yl� 680.00 283,900 272,368 2,707,013 �✓ 680.50 290,000 143,475 2,850,488 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Storm Sewer outfall a Device Routing Invert Outlet Devices 91 Primary 672.60' Asymmetrical Weir, C= 3.27 Offset (feet) -28.65 -25,65 -3.00 -3.00 3.00 3.00 25.65 28.65 hristopher C. Mulligan Height (feet) 7.50 6.50 6.50 0.00 0.00 6.50 6.50 7.50 Lic. No. �031672 o� � Primary OutFlow Max=60.50 cfs @ 13.13 hrs HW=674.72' (Free Discharge) Fss �o \ 't-1 =Asymmetrical Weir (Weir Controls 60.50 cfs @ 4.76 fps) I oNAL OLD TRAIL-8053\BLOCK 351UPPER BALLARD WPO.DWG REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments DATE January 31, 2013 SCALE 1 " = 501 CONTOUR INTERVAL 1 FOOT V, ` Z a U w W Co P� 0 Q v Co cm F_�O Z ®� 0 }_ >N F - D2. U ® O Irv" OW W `0 2 04 Cf) W E-� Z o N m CQ Q g!:. ~ D k Q C3 cc Ua cW;@) 0 Z 00 w o Cn �� JZ J Q 0( wzc VQ r ►� Q J0 04 Q� Qu r W 0rc �0 O Vl� U ? LLI 0� V N P o W W �i �W Z 0 W 0 - REVISIONS June 06, 2014 PER COUNTY COMMENTS July 29, 2014 Comments August 20, 2014 Comments DATE January 31, 2013 SCALE 1 " = 501 CONTOUR INTERVAL 1 FOOT FILE NUMBER 8053 ------------------------------------------ SHEET 12 of 12 V, Z O � W Co P� 0 Q v Co cm F_�O Z ®� J 06 }_ >N F - D2. J Cn V ® O Irv" OW �- U J (, a 00LLI J mJm O �Ja O< U. CL D ------------------------------- O FILE NUMBER 8053 ------------------------------------------ SHEET 12 of 12