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Home My WebLink AboutWPO201700020 Plan - Submittal (First) 2020-10-27GENERAL NOTES OWNERS: TMP056Ko-oo-oo-000A2 GLENBROOK, LLC PO BOX 1467 CHARLOTTESVILLE, VA 22902 TOTAL ACREAGE: 4.7o AC ZONING: R-6 DB-S075, PG. 672 TMP 05600-oo-oo-o57B2 GLENBROOK, LLC PO BOX 1467 CHARLOTTESVILLE, VA 22902 ACREAGE: 8.17Z AC ZONING: R-6 DB.5075, PG.672 DEVELOPER: RIVERBEND DEVELOPMENT, INC. 455 SECOND STREET SE, SUITE 400 CHARLOTTESVILLE, VA 22903 ENGINEER: COLLINS ENGINEERING Zoo GARRETT ST, SUITE K CHARLOTTESVILLE, VA 22902 TOTAL PROJECT AREA: TMPo56Ko-oo-oo-000A2: 4.7o AC (PORTION OF) ORIGINAL PARCEL: 6.3 ACRES SUBTRACT EASTERN AVENUE R/W (3.055) & PHASE IIA (0.545 AC) TMP 05600-oo-oo-o57B2: 8.18 AC (PORTION OF) ORIGINAL PARCEL: B.S02 ACRES SUBTRACT PHASE IIA (o.33 AC) TOTAL ACREAGE: 12.88 AC PROPOSED ZONING: R-6 ZONING WITH PROFFERS (ZMA 2016-05) & PRESERVED SLOPES OVERLAY DISTRICT. (PARCELS SUBJECTTO PROFFERS) PROPOSED USE: 48 SINGLE FAMILY DETACHED UNITS TOPOGRAPHY: TOPOGRAPHY PROVIDED BY ROUDABUSH, GALE & ASSOCIATES, JANUARY 2020. BOUNDARY INFORMATION PROVIDED BY ROUDABUSH, GALE & ASSOCIATES FROM RECORDED PLATS AND SURVEYS, AUGUST 2020. TOPO FIELD VERIFIED MAY, 2020. DATUM: NAVD 1988 EXISTING VEGETATION: MOSTLY WOODED PRESERVED/MANAGED SLOPES: PRESERVED SLOPES ARE SHOWN WITHIN THE LIMITS OF THE PROPERTY. SEE EXISTING CONDITIONS SHEET FOR LOCATIONS. THERE ARE NO MANAGED SLOPES ON THE PROPERTY. FLOODPLAIN: THERE IS NO FLOODPLAIN LOCATED ON THIS SITE. FEMA MAP ID 51003Co229D DATED FEBRUARY 4, 2005. WPO STREAM BUFFER: THE ioo' STREAM BUFFERS ARE SHOWN ON THE PROPERTY. NO PROPOSED DEVELOPMENT SHALL BE LOCATED WITHIN THE ioo' STREAM BUFFER AREA. WATERSHED: LICKINGHOLE CREEK WATER SUPPLY WATERSHED AGRICULTURAL/FORESTAL DISTRICT: NONE BURIALSITES: NONE DENSITY: 48 UNITS / 12.88 ACRES = 3.73 UNITS /ACRE OVERALL ALLOWABLE DENSITY FOR PARCELS PER REZONING =18o UNITS PHASE 1=8 UNITS (23.887 ACRES - NOTE: io UNITS OUTSIDE REZONING LIMITS 4 (3 �/ ) PHASE IIA = 7 UNITS (0.875 ACRES) PHASE IIB = 48 UNITS (1Z.88 ACRES) TOTAL DENSITY: 1 UNITS .6 ACRES = 6 UNITS ACRE 49 137 42 3 9 / TOTAL REZONING UNITS TO -DATE 1 UNITS ( ) = 39 BUILDING TYPE: AMINIMUM OF 5o% OF THE PROPOSED LOTS WILL BE SINGLE FAMILY DETACHED HOUSES. SINGLE FAMILY ATTACHED(SFA) UNITS AND TOWN HOUSES MAYBE CONSTRUCTED IN THE AREAS ADJACENT TO PARK RIDGE DRIVE AND THE EASTERN CONNECTOR ROADWAY. A MINIMUM OFio%OFTHE UNITS SHALL BE SFA OR TOWNHOUSE UNITS. PHASE I: (84 UNITS)18 SFD UNITS & 66 SFA UNITS & (ioBY-RIGHTR-6 SFD UNITS) PHASE IIA: (7 UNITS) 7 SFD UNITS PHASE IIB: (48 UNITS) 48 SFD UNITS TOTAL (TO -DATE): i3g UNITS (R-6 REZONING) & io UNITS (BY -RIGHT R-6 ZONING) SINGLE FAMILY ATTACHED UNITS: 66 TOTAL % (47 5 ) SINGLE FAMILY DETACHED UNITS:73 TOTAL (52.5%) AFFORDABLE HOUSING: TO BE ACCOMMODATED AS NOTED IN THE PROFFERS. SEE SHEET 8 FOR ADDITIONAL DETAILS. BUILDING SITES: EACH LOT CONTAINS A BUILDING SITE THAT COMPLIES WITH THE REQUIREMENTS OF SECTION 4.2.1 OFTHE ALBEMARLE COUNTY ZONING ORDINANCE. SUBDIVISION STREETS: CURB & GUTTER UTILITIES: COUNTY WATER AND SEWER SETBACKS: FRONT - 5' MIN AND 25' MAX (i8' MIN. FROM R/W FOR FRONT LOADED GARAGES) SIDE - 5' MIN REAR - 20' MIN NOTE: SINGLE FAMILY DETACHED UNIT GARAGES - MINIMUM 3' STEP BACK FROM THE FRONT OF THE PRIMARY RESIDENCE. BUILDING HEIGHT: MAXIMUM BUILDING HEIGHTSHALL NOT EXCEED 35' CIVIC AREA/RECREATION: NO CIVIC OR RECREATION SPACE 15 PROPOSED WITHIN THIS PHASE OFTHE PROJECT. OPEN SPACE: OVERALL REQUIRED OPEN SPACE (25%) = 37.642 AC * 25%= 9.411 ACRES TOTAL OPEN SPACE PROVIDED PHASE L 5.8 ACRES PHASE IIA: o.o ACRES PHASE 11B: o.947 ACRES (THIS PHASE) OPEN SPACE "A" = 0.064 ACRES OPEN SPACE "B" = 0.198 ACRES OPEN SPACE "C" = 0.685 ACRES GREENWAY DEDICATION AREA: 2.7o ACRES TOTAL OPEN SPACE PROVIDED: 9.447 ACRES OPEN SPACE SHALL BE DEDICATED TO THE HOA, WITH EXCEPTION OF THE GREENWAY OPEN SPACE, WHICH WILL BE DEDICATED TO ALBEMARLE COUNTY FOR THE EXTENSION OF THE GREENWAY TRAIL THROUGH THE PROPERTY. PARKING: 2 OFF-STREET PARKING SPACES SHALL BE PROVIDED FOR EACH DWELLING UNIT .ADDITIONAL ON -STREET PARKING SHALL ALSO BE PROVIDED ALONG THE ROADWAYS AS SHOWN ON THE PLAN. GUEST PARKING REQUIRED: 48 SFD UNITS x i SPACE/4 UNITS =12 SPACES GUEST PARKING PROVIDED: 1g SPACES LANDSCAPING: STREETTREES ARE PROPOSED ALONG THE NEIGHBORHOOD STREETS IN ACCORDANCE WITH ALBEMARLE COUNTY LANDSCAPING REQUIREMENTS WITHIN SECION 32.7.9 OFTHE COUNTY CODE. LIGHTING: NO LIGHTING IS PROPOSED WITH THIS DEVELOPMENT. TRASH: EACH LOT SHALL HAVE AN INDIVIDUAL TRASH CONTAINER. RETAINING WALLS: THERE ARE NO RETAINING WALLS PROPOSED WITH THIS PLAN. OFFSITE DISTURBANCE: NO OFFSITE DISTURBANCES AREA PROPOSED WITH THIS PLAN. TRAFFIC GENERATION: TRIP GENERATION BASED ON THE ITE TRIP GENERATION MANUAL (loTH EDITION) SEE SHEET 6 FOR TRAFFIC INFORMATION. GREENWAY: PROPOSED OPEN SPACE(2.7o ACRES) TO BE DEDICATED TO ALBEMARLE COUNTY AS PART OF THE GREENWAY EXTENSION. SEE PROFFERS FOR FURTHER DETAILS, AND SHEET 2. LAND AREAS: OPEN SPACE=158.870 SF (3.647 AC) LOTS = 295,io7 SF (6.77 AC) ROW DEDICATION=107,290 SF (2.463 AC) IMPERVIOUS AREAS: ROADWAYS 66,702SF(1.53AC) SIDEWALKS 18,308SF(0.42AC) BUILDINGS & PATIOS/DECKS 91,296 SF (2.og AC) DRIVEWAYS 18,537SF(o.43AC) TOTAL 194,843 (4.47 AC) FOOTHILL CROSSING II VSMP PLAN AMENDMENT #5 AMENDMENT TO WP02017-00020 WHITEHALL DISTRICT ALBEMARLE COUNTY, VIRGINIA TMP: 05600-00-00-057B1 OWNER: GLENBROOK, LLC ACREAGE: 9.32 AC ZONING: R-6 DB/PG: 5039,75 \, GLENBROOK AT FOOTHILLS , PHASE IF lHdiiFld .:. 1 , I 1 ( :•tom, Ell I t y ;LENBROOKATFOOLLS \ / /, • / PHASE IIA / i , _ I TMP: 05A�0-00-00- 5768 OWNER: I GLEN PROO LLC �; 1 ACREAGE,: 8.112AP ZONING: R-6 DB/PG 5075/672! 1 I V - v♦ �� __� -_j I �Ial T I'. I+ II I I I i♦♦♦ j • ♦ / \ 81-14BR PIIB K Ai TMPOIT ILLS_ TMP: 05600-00-00-05500 ♦ \ / \ / _ OWNER: COLIMOFALBEMARLE ACREAGE: 2.19AC ZONING: R-4 DBIPG: M971431 EP 4 ep G �0 9 � � •Mass i�° es°bye r°'i 4 \ , , Lj �4 , x_ \ TMP 0560-OMME200 1 OWNER F R, GEORGE B OR JANIEE 1 ACREAGE; .81 A - \♦ ZONING ,R-4 \ DBIPG M1017 �'�� V \ L♦.♦� - TY O TMP. 0560"(Fw_04800 OWNER: HEVENEF, RICHARD LLOYD II ACREAGE: 14.94 AC ZONING: R-6 / DBIPG: 860210 I i )5 ,0-000-00-066A2 2LENBRObK. LLC AOREA E:_ 4.70 AC --,Z�L_R-6 _ o�iw II mr i AC D IZONING. PRO I IDWPG: 4081/081 I �. lil I- -_-------- \��__ 2(Y TEMFGRAAY GRAGINI _ I ONSTRUCTIONG EASTE I VENNECT RTGI MATEG WHEDWHEN NAV INCGNSTRUG I I I lil I I I OR 40'T/, Pc. Ts I I I II I I I I - croCE e i osgyZFyw.. °2°OFo9�T°off \ sF 90 GTq � osGyv ep \\ y pnk �tiG f G Zfp I >0G� R pss \ GSS/W i \ TMP: 0561<0.00-04 90O OWNER FOOTHILL CROSSING INC ACREAGE: 046 AC ZONING: R-1 DBIPG. / OWNER: FOOTHILLC� $SING INC -----' ACREAGE' 2.78 AC• - ZONING : R-0 p._ Po t f ! SITE VICINITY MAP SCALE: 1" = 2000' Sheet Number Sheet Title 1 COVER �- EXISTING CONDITIONS i GRADING 8 MITIGATION PLAN 3,4 GRADING &DRAINAGE PLAN 28 CONNECTOR ROAD GRADING &DRAINAGE PLAN 3C GLENBROOK PHASE 2 GRADING &DRAINAGE PLAN PRE 8PQST-DEVELOPMENT STORMWATER MANAGEMENT PLAN 5 PRE & POST -DEVELOPMENT STORMWATER MANAGEMENT PLAN _&_ STORMWATER MANAGEMENT DETAILS &CALCULATIONS 4- STORMWATER MANAGEMENT DETAILS &CALCULATIONS %14 STORMWATER MANAGEMENT DETAILS 8 EROSION &SEDIMENT CONTROL NARRATIVE &DETAILS 1J- EROSION &SEDIMENT CONTROL PLAN PHASE I �6 EROSION &SEDIMENT CONTROL PLAN PHASE II H'9A EROSION &SEDIMENT CONTROL PLAN PHASE III � EROSION &SEDIMENT CONTROL CALCULATIONS s 4 EROSION &SEDIMENT CONTROL CALCULATIONS 13 EROSION &SEDIMENT CONTROL PLAN PHASE IV 14 EROSION &SEDIMENT CONTROL PLAN PHASE V 15 EROSION &SEDIMENT CONTROL PLAN PHASE VI 16 EROSION &SEDIMENT CONTROL CALCULATIONS WPO PLAN SHEET LIST TOTAL BPAGES PLAN AMENDMENT PROPOSED CHANGES: 1. UPDATED AMENDMENT PLAN TO ADD IN THE CONSTRUCTION OF GLENBROOK PHASE 2. SCOTT/R. ('bLLINSZ Lie. No. 035791,'n P 10/21/204 o�slnnrnT. E�Gl Z O_ DO Z w =)Z In O Z J O Q H c ~ w Z W ce 0 l' J Ln z cy") O N - � z I w N O Q N W w / z __J Q > _I LU 0 O W U � O WY --I Lu (I V Lu Ul U) V LLJ Z O I I � � � U J�yJ Il �� JQ� (D p C) O O 0 U_ ULU F JOB NO. SHEET LAYOUT 112066 SCALE: 1" = 100' SCALE N/A SHEET NO. 1 y % GLENBROOK ATE FOOTHILLS - iA v r l �� _ _ /. \ � � �- - � � LOT 101 E STIN BROOK AT o �� UC / 66 -� I- '- '> y / F00 PH SE I STOR PHASE I / \ xh O� �� i / l I` ti 4 . / --- - - - _ v LOT loz v J` gyp, SEWER v / h 5 / p6� �\ / h _ \ v / A , '' COTT R. LLINS OT �� G / v < Lia No. 035791 a �x �° 10/19/20 x162 EXISTING �� EXISTING LOT 118GLENBROOK AT LOT 103FIFE: 666. ON SPACE A I� \ / OPEN SPACE AR: 666.i y : / � I FOOTHILLS - � � �/ ,. LOT 112 LOT ill PHASE I / 1 V A a'i' �� I_ LOT 110 / \ LOT 104 / 6 FIFE: 663. LOT 109 �\ 16 3 V . LOT 108 LOT 107 L 1 \ b I I 6 R:66z.5o �__ -- A LOT105 �- j/ /�// %- A -OT 17 \ - _ \ 1 I \ LOT \ ,-^. ,// / '\ x_,.._ '6 \ _ �.I - I_ ' --II I I. �. /e__. \P\_._, /-'_ / //`O6 LOT 106 LOT 116 A / /� i / I I / I HEAT �/ w __ , HERFIE�D LANE �� a a 'j ytix Job LOT 155 / r _� 11 -�. � � I _ 54 PUBLIC 7>? � �-•�-.'' I :` S � / / / +y .� V �/ A A / / / / .Vi/ �0 FFE:657. o �/� L� oeOSQOO / V �� ' �.A / y T OT 1 65 / 4� / \ V LO 115 / a -- / �„ , \ 1 �� / -.- �A \ ., - / /"i`/OTL156 ,� �, / Lr / � � I -----' I � .-11- --- I�_ ` - I -- - F r '= ., �_ +, � -=-= ✓ �L / / / � \ \ V \ - / � � / i - U)wo wmOT OT157 15 LOT 158 • r ` 1 / / Ln LOT I l LOT 159 / h,, - -- ` / \ GLENBROOK AT / / w s/ � 57 1 LOT 160 LOT 6+; GLENBROOK AT I , i / /\ / 6� - F � i 11 � 11; � � � � / FOOTHILLS �•,,. GAR: 655.gz j a ° 5 j 6 �`, / FOOTHILLS V �/ ---_° PHASE II6 PHASE I �; V A 113 LO LOT �' LOT i61 i k �' v / W S-------- 1 .'�Ur 67 EXISTING Fx� k FF . 655.83 � 54 75 - / 654.25 T S2 / - \ i OPEN SPACE / LO/ / � �� % l �� / EXISTING \ / / OPEN SPACE- F.. FOOTIHILLS PHASE IIOSTORM I / _ SEWER 652.58 LOT LOT J l ,`- B T:6453 6� 70 / e / - / a q 8 5 : \ _ - �`��. �` �: "A� , 0^ ` Vi 0 ,�� ,. �' r FE Sz 5 i 1 LOT / . i i I ---- - 6 V / L o LOT / ----- s� ! / r am, FFE:6 z FIFE6S4,i7 3 I i GAR: 654.4 r GA 653.67' / FF . 654J5 LOT / B T.64 I ', ,, , ;>,,•: �� . : - G R / �� • s; y FF . 655.00 FE: I •� < 176 2 y i...- _ ��,'__� GA :654J5 � I i FFE6S5.z5 1� , �,, , , , i� >; ' • ', ;, �.: - ,• \ \ i T:64 5 0 % LO _\� �, /- - - - � Ja �' I-_ GA : 6 I I, FFE: 6S5.5o r h � / / / 204 �' , • S \ FFE: 65i.00 / ---------- - - _--'I - + r � '� I , ,�, •., . ° > .: ' � - "� � ,' -- / � - _ -v,� P LEDA DRIVE - - - - - - / � I PUBLIC - -_-_ -__- _-___ - L9 ROAD -_ / / / I` ' ^ 54' PUBLIC R/W / M 1..t 7 T r - r _ s OT I. 19 - �50 - - _ „ / rn / 5 / S � i Alr FFE: 0.0o 6 1. \ 5 GAR:649.5 _ a LOT -- --- -- / _ 5 �94 Q OT / /- GA . 65a.o I CL o \ ----- ---- / II / % 04 0 FIFE: i.00 LOT � li � �_ � �.� S /a i 1 - --- I - LOT W J� o \ i - 18o \ GAR 650-50 , , Q � 1 - _ W T:64i.o p 3 5 v I ---= S I '' 79 I 78 OT U..� FFE:6 S.os GAR: 6 o. o i' I FFE: 654.00 Q ` I/ I „ \ GREENWAY - - O� a m _ L0 GAR: 653.5 ' GAR: 653.8 I `I FIFE: 654 75 z DEDICATION - ��o w -I _ _ - I i93 i - --- GAR:654.z 1545 �, W > I -I AREA �`� I FFE:65i.5o _i_ - --- GAR:654.0 �•� � Lli OT a LOT _ _ s _ \�70 ACRES � � - - -� ' _ --= i1 L � - � _j � Q FFE 6 0 \ / _- _ - T - - ___ _ 5_- '! PROPOSED GLENBROOK PHASE a f lr i FFE.549.00 _I T .• 49-5. � \� / ;STORM SEWER TO TIE INTOz < � EXISTING CROZET ` \ I \ �l \ BGA .64SMT:6g-o o ` y / \\ GAR: 648:5o I LO _ -1-- EXISTING CONNECTOR ROADWAY X DOG PARK > - �. - STORM AND SHALL CONVEY Lli F� TO WET POND zBONTHE ..'� - �1 •� ' i`-- -;. f ` \ 19 I'Ii 11 1� FOOTHILLS CROSSING PHASE IV ii FIFE: 8. 0 I _ - PROPERTY �8. o 108 GAR: 648 00 �� \ _ Q � - -- _ �I �� LOT LOTL9 0. GAR- 648 .00 LOT 9- , / Of FFE:6 00 S 181 182 - / - - FOOTHILLS Q MT:6 I GAR: 6 8. _ 1----- C FFE:6 0o I FE:6 0o r / 37- 199 4 5 - o Z 4 45 A 1 I / FFE 6 8. SMT:6 L T GAR:6 - GAR:6 4.50 ' / T CROSSING - / U CV I �8 F 6 -50 4 0o I I _ 0p3 - I \ \ PHASE IV / /I � � p ✓ I 1 �1 r C C1 1 18 ' _ 1 (-� 37-5 FIFE: 6 6- o n ° FFE: 6 LV BSMT:6 4 s �\ �/r / - - / / W H�Ln LIT GAR:646.00 - n A / Q ----- 4 1 I ioO,STREAM BUFFER x _S - _ A �� OT � S S �-- + 1 p 11181+ \ - - ' FFE:644.50 3:00 LLI 630 GAR:6 FFE: _ T_ -W LL z.5o \ \ O m \ - PROPOSED A _ 1'i �•.. ,V<`. ih\ - �_- ---- - //� �/ U \ \ - LOT LINE (TYP.) - - 2�. _ \ - - OPEN / 4pt , , - // / _ J rr - SPACE J 44 � � LOT I � �� W v \ FFE. 6 00 �_ , _ V GAR: 643.50 / j v 18 �� / � �644.0o ' , s ) 1 - - 50 1 � u - _. GAR: 643.00 1_ . I '--..OT _. � 186 3� // / . _ N Iv1T:633. 187 F : 642.50 POND 2113 > .00 _� -- GAR�62i5o GSMT.6�00 A� PROP SEDGLENBROOKPHASEz' -I BSMT: 3z. 3 3 / I I1� - u STOR SEWER TO TIE INTO ` 3� EXISTIN� CONNECTOR ROADWAY 6' AQUATIC B w 7` ^ _ 1 / STORM AND SHALL CONVEY 8' SAFETY B _ --- 1 b' J �- s / O TO WET ONDzBONTHE I I \ a cn SPACE FOOTHILL CROSSING PHASE IV I JOB NO. s / / PROPERT I I 112066 Is B i'GRAPHIC SCALE _ _ SCALE 40 0 -/ 20 i \40 80 180 I 7� I SC' ACSA - -. I 7 I I j °=Q0' SEWER - - , D _ ' ✓' SHEET NO. IN FEET) ..� _ • �' J�z- _ - < EASEMENT x � - - - 5355 PC - - �'" I 3C I inch - ,40 ft. GB . - - -� - �`S - -- I �i/ ,� r Watershed Summary for DA lA: Outflow Summary: (2-Year Storm Event) APPROVED _ OVERALL SWM PLAN FINAL FUTURE BUILDOUT 1-yr, cfs z-yr, cfs 10-yr, cfs Pre -Development Post -Development - \ � � � - Approved Pre -Development 6.86 8.49 25.44 - \ SCALE 1"=200' Approved Post- Deve to pment Routings 1.48 1.61 2.39 Full Buildout Proposed Post-Dev. Routings 0.94 0.98 7.58 APPROVED Note: Per the approved 9VAC25-870-66 calculations, this development meets channel DA'1A' 8.49 cfs DA'1A' 0.98 cfs DA'26' 1.89 cfS DA'2B' 6.97 cfs DA'3C' 1.81 cfs DA'4D' 2.25 cfs protection compliance by having a post -development 1-year peak SCS design storm outflow Total= 15.46 cfs 6.93 cfs less than or equal to 1.48 cfs. �� /APPROVED FINAL BUILD OUT NOTES: ( ) _ .�� 41 aDA#lAF� nil -Roadways euildout Impervious Area Summary1. THE LAYOUT SHOWN INCLUDES THE - Outflow Summary:tD-YearStorm Event APPROVED �' *Roadways 188,477 If ^?�.. r �- GURRENTLY NDERRFOOTVIE SUBDIVISION Pre -Development Post -Development \ `Sidewalks&700 Driveways 102,924 If CURRENTLY UNDER REVIEW. AFINAL ( 5Attached Lots where Half is Captured 4,600 If SUBDIVISION PLAN IS REQUIRED FOR THE 6 Detached Lots where Half is Captured 6,000 If DEVELOPMENT OF THESE LOTS. ( 61 Attached Lots where Most or All is Captured 112,240 If 2. AMENDED SWM FACILITY #1A (LEVEL II WET - POND) WAS SIZED FOR A MINIMUM DESIGN 22 Detached Lots where Most or All is Captured 44,000 If TREATMENT VOLUME OF 68,039 cf. THIS Approved Foothill IV Impervious Area 16,085 If VOLUME WAS CALCULATED USING THE 474,326 If VRRM AND ASSUMES THE FULL BUILD OUT WATERSHED - SCALE 1"=1000' . APPROVED FINAL BUILDOUT DA #1A- �- 21.64/ac. \ \ \ \ CN=80 & Tc 0.23 hrs. \ / 'Includes Park Ridge or, Glenbrook Subdivision, Eastern Connector SUBAREA CONSISTING OF 0. 5 ac. ac. / ,. _ W -Road Ext.) IMPERVIOUS AREAS&10.75 ac. Total= 53.23 cfs 32.63 cfs - __ / /,..: \: ". \ \,.; =,/,e g�I ,`.` MANAGEDTURF. THE CAPACITY OFTHE --._- -. �- r ,`�Nea _ -... 11 }y OA#28 UPOATEO FOR GLENBROOK 2 Final BURtlm# Imperl Area Summary APPROVED FACILITY EXCEEDS THIS DESIGN IFor Water Qua ntity& Qoarty Calculations) REQUIREMENT. - +_ry /, '. �"'. ♦ / - 1'r \ ' % - \\ �` ;.(Water Quality and Quantity Calculations) .THE PROPOSED GLENBROOK PHASE II -\� // \ --/ / `,� < J' \ ]Approved BUILDOUT WILL UTILIZE SWM FACILITY#2B,�Roadways 97,477 sf WITHIN THE FOOTHILL PHASE IV/V PROJECT.Sidewalks & 15 Driveways 27,948 sf <. i �_-�� THE EXISTING DETENTION BASIN WILL BE , // / - _ \s_ \ _ /\,v36 Detached Lots where Most or Al l is Captured (1767 sf 63,612 sf UPGRADED TO A LEVEL I WET POND. % \ ' -- "' - Foothill IV Impervious Area 49,658 If .THE OVERALL PROJECT SITE WATER QUALITY MEASURES .. .' .' "..' - .- 1..,1 ! 1. tl . -� , � \ y; ,. :?: �.,. .< �. - ��_- I I I • \ Proposed DA #28Total Impervious Area 238,695 If A 1.71 LB YR PHOSPHOROUS REMOVAL BE Approved DA #2B Total Impervious Area 245179 If / PP P MET PER THE VRRM. THIS LOAD WILL BE DA #3CUPoATEO FOR GLENBROOK 2 Final Bmldout Im rvious Area Summary . .'.. 1. .' ' - :' / J '� J / ° r -,/� v U:/ �. '�' . � • : \ / " '(� I_ � / • \ pe ry TREATED BY PAYMENT INTO THE (For Water Qua nn ty&Quality Calculations) LICKINGHOLE PRO RATA SHARE WHICH WILL .. / ♦ �' / i }" - _'�, � , � ` .� :/ ;/'- � � "' ---- ----- \ For Glenbrook at Foothills Water Quality & Quantity Calculations REMOVE 30%OF THE 7.89 LB RREMAINING Bunion Drive (portion) & Road A 10,449 If LOAD FROM SWM FACILITY#2B (2.37 LB/YR), ... ,y / \. -. - (✓ , � �. / ,,,, , ,,,,. ,. � ', <. � � � e '-�. ;? I. _, / \ i,. EXCEEDING WATER QUALITY -.P ♦' / t _ - ..:Sidewalks &4Drivewas 5247 sf Q ,...r ), r,. _ _ ::// / \`� t I•:/ r• /I' �. �.., ', / »•i +, /� ,. / �� - r:: I', /' \ \. v „ ; D Fw/AELEV. 1 & REQUIREMENTS. .'.' p ..f { :- A � y7 � � ..✓ „/ < .,'� .. �- :.'. � ') (; ` I I , � \ , 1Detached Lots where Half is Captured 1,000 sf \ ._s lr /-- _ I ( ' _ / /:y / �q. , ::: \ r �/ �' �'. ' -•\ .DRAINAGE AREA #3C AND #4D SHALL .y / T,. j j �.� 1- , 9.' CFW LEY. 1 ,._ / '�� <. ram.^. r 'Y > '� 2. ,, :. ✓ 3 Detached Lots where Most or All is Captured 6,000 sf RELEASE STORMWATER DISCHARGE TO THE \ :`. Y, f. / U _� / / ' > i - / \ > - '' \ ♦ \ '`q: r t \ Proposed DA #3CTotal lmperviousArea 22,6%sf CREEK. THE OVERALL CONTRIBUTING <.`APProved DA #3C Total ImperviousArea 21,696sf DRAINAGE AREA TO THE CREEK AT THIS SITE ",- L ./. /,' III. / :'.; - v,/ _ ,/ // -. ��\ ,,, ,i" / ' .. s .; ,' '", `•\'P � IS 134 ACRES. THE PROPOSED DRAINAGE , OA#W UPDATED FOR GIENBROOK 2 Final Bullelout Impervious Area Summary AREAS #3C AND #4D ARE 1.22 ACRES AND =1 \ _ ; .� ' / _ _ • ' - \ : IFor Water Qua ncity& quality calculations) 1.04 ACRES, RESPECTIVELY, WHICH ARE LESS - i I( b \ ♦, e ry.>". '' - (For Glenbrook at Foothills Water Quality& Quantity Calculations) THAN I% OF THE TOTAL CONTRIBUTING - o-Il .- -.� . / 100-OF OLF w/AELEV•-_ 1► Binion Drive (portion) 5,854 If DRAINAGE HENCE T THE STREAM AT EACH 165' OF CF OUTFACE, HENCE THE I%RULE APPLIES AND - - Sidewalks&SDriveways 5,854 sf _ '\ ♦. �\� v-./ _...,...,�- '•,v /��\ �\ .. Y.,,. �- - _J / `\ •�\ THE OUTLETS MEET CHANNEL ADEQUACY ' "w \ 6 Detached Lots where Most or Allis Captured 12,000 If _ / ♦ ^\ 4 ,/ ,I ,,j .� .. /' \ \ \, '.e REQUIREMENTS. L - FUTURE Proposed DA #4DTotalimpervious Area 25662 If �,:.,.n, I -- �� \` ♦ / - I` -'' ,' -' / `. � /.'' PP TotallmperviousArea z3,uzsf `''v, \ APPROVE FINAL PHASE ♦ /'- `, Approved DA#4D / yz:,. RIIII f)f)I�C� DA'1A' 25.44 cfs DA'1A' 7.58 cfs DA'2B' 16.50 cfs DA'2B' 27.79 cfs DA'3C' 4.01 cfs DA '4D' 4.54 cfs SCOTT&LLINJ Lic. No. 035791 !� p 10/19/20 ��&JONAL tllG Z O d Z cc w ::) O to Z J o a u Ln H Vi LU CII W -'--- I •,, 'APPROVED FIN L - - \.. .♦.. j:; �oJQrJe� ----------- --- ---- _ ,-\ / /' //� _.:.,',.. - - BUILDOUT DA # fig} Ss / /♦� \ c & Tc-h0.19 s. A PROPOSED FINAL� •� / /, \i �� A BUILDOUTDA#4Dv�', , L9 \ 27 ac.Cl . / ♦ V i / / v� Oi cs, V? 00'\FLF w/AELEV.=T r j ` \ ' •.'e /. X' / _- SJ' PUBLICR,L4Nff \ V'.`1'e /:/ �• - -t� i // s" / ' ♦ � "� c ,% /�/ r' N6ATNff27ff� v�ii� i 7 8 Of CF w/ A ELEV.=14' ♦�� N y 7 /•�� _ /� �i �� / air W .v �1 \ v / / I,' : toTtse I ` � � ♦ / � w LOT v6o . 11 y 1 ,.�� / � >, ;� ,•__^ GLENBROOKC� N / ',w' `•. '-\ `i ;� - %, - PHASE2 __� ��' �5 e1 �i� h N LU V IF , , Y s_ - , IF Q F z r. I / J , LU PROVED FOOTHILL PHA S� IV L� ` ' APPROVED M T U ^ / THE SW PLAN FROM HE 0_ I�`� APPROVED FOOTHILL CROSSING I VSM APPROVED DA2B ❑ i s- PLAN AMENDMENT _ S ` APPRO ED FACILITY \ -� - I I _ I � "� r r � H� O # IS UPDATED WITH PRE -DEVELOPMENT SCALE 1A THE GLENBROOK PHASE 2 PROPOSED _- 1"=200'�� j ��, j - s ' -(I ;I PPROVED FINAL BUILDOUT DA#2B i / ' / / ' �M APPROVED Tc=0.37 hrs, �� Tc=0.29Firs. 100'OFOVERLANDFLOWATI% i -_' ' % 13.46 ;!' f1 LAYOUT. PROPOSED DA #2B DRAINAGE 2 ( �1 -I _ I I _ _r; I� = Tc 0 24 hrs. ! f.; / /, Tc=0.08 hrs. (952'OF CHANNEL FLOW AT 4%) \\ - - "' I PROP05'Ep INALBUILDOUTDA#2B ;,♦ AREA AND IMPERVIOUS COVER ARE O ♦ 100 - 1 _ A, - - - ' -13.38 ac. Ay H �� - CN=76 & --0.24 hrs. `� Y z REDUCED IN THE PROPOSED PLAN THE APPROVED v --_- I� �' i� 1 �� PROPOSED DRAINAGE AREA IS 13.38 ac. w (j w P E-DEVELOPMENT ,�; ♦ VERSUS THE APPROVED DRAINAGE AREA Z _ � p 16.91 ac.OF 13.46 ac. THE PROPOSED IMPERVIOUS Ul � (n 0 CNI=,61 & Tc=0.37 hrs / �' ;% -. 0100 v ,�\� - � �,y_ - � J �,' , j/ COVER IS 238 695 sf WHICH IS REDUCED (n y APPROVED - = ' FROM THE z45�179 sf. LU i N i LU \� \ cn EXISTINGTREELINE r / i I I s i/�vv Vv-� / V \� / F(TYP.) �� iLU 'V f ��Z �, " I IA '- H1 0100 \ v v-� ■ o� V A ( APPROVED I W PRE -DEVELOPMENT DA #2B ` •^ � I ® CN=57 & Tc=0.29 hrs. / -...' • ..'. •:' /4 - \. -,...•.•. •.•'•'.h \✓ \ '»-:. �'�~ - I I . TOP OF MH=F096 G ARHIC SCAL , =618.1 �_ .' .' �I ,: I w Bo a � aw TOP OF PH oUJ Ny \ \ \ i III •�, 1. '�: ;t,-•`•'" �� i --_-_ y Ih" ET JOB N. 1 inc = ft. �• 112066 l EXISTING TREE LINE SCALE APPROVED TO hrs �� \ AV /- _I A ^ - _ _ _ `.�. �� • S SHOW ' A N -•: _ SHEET NO. Tc-0.25 hrs. (100 OF OVERLAND FLOW AT 4/ \ _ PROPOSED FACILITY �;� A v - - - - - zo'TEmPORnRV GuoING �- - - - - - - .�_ - V .v AV A Tc=0.04 hrs. (500' OF CHANNEL FLOW AT 6% . - ��" V / _ _ -- - �SEMENTfaR-FUTU - � � o - - - � // _- - A \ \ \ ) - \ i /'2B' / \ / ONSTRUCTION OFEASTERN \ \� _ EROSION &SEDIMENT CONTROL MEASURES: STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE IN ACCORDANCE WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. STRUCTURAL PRAC7CES USED IN THIS SECTION CONSIST OF THE FOLLOWING. 3.01 SAFETY FENCE. A PROTECTIVE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONTROL MEASURE. TO PROHIBIT THE UNDESIRABLE USE OF AN EROSION CONTROL MEASURE BY THE PUBLIC. APPLICABLE TO ANY CONTROL MEASURE OR SERIES OF MEASURES WHICH CAN BE CONSIDERED UNSAFE BY VIRTUE OF POTENTIAL ACCESS BY 7HE PUBLIC. 3.02 CONSTRUCTION ENTRANCE.' A STABILIZED PAVED CONSTRUCTION ENTRANCE WITH A WASH RACK LOCATED AT POINTS OF VEHICULAR INGRESS AND EGRESS ON A CONSTRUCTION SITE TO REDUCE THE AMOUNT OF MUD 7RANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF. CONSTRUCTION EN7RANCES SHALL BE INSTALLED AS SHOWN ON THE PLANS TO REDUCE THE AMOUNT SEDIMENT TRANSPORTED ONTO PUBLIC ROADWAYS. 3.05 SILT FENCE: A TEMPORARY SEDIMENT BARRIER CONSISTING OF A SYNTHETIC FILTER FABRIC S7RETCHED ACROSS AND ATTACHED TO SUPPORTING POSTS AND ENTRENCHED, TO INTERCEPT AND DETAIN SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTRUC77ON OPERATIONS IN ORDER TO PREVENT SEDIMENT FROM LEAVING THE SITE, AND TO DECREASE THE VELOCITY OF SHEET FLOWS AND LOW -TO -MODERATE LEVEL CHANNEL FLOWS. THE SILT FENCE BARRIERS SHALL BE INSTALLED DOWN SLOPE OF AREAS WITH MINIMAL GRADES TO FILTER SEDIMENT LADEN RUNOFF FROM SHEET FLOW AS INDICATED. THEY SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND MAINTAINED IN ACCORDANCE WITH THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK (VESCH). 3.07 STORM DRAIN INLET PRO7EC770N: A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM DRAIN DROP INLET OR CURB INLET. TO PREVENT SEDIMENT FROM ENTERING STORM DRAINAGE SYSTEMS PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA. INLET PROTEC7ON APPLIES WHERE STORM DRAIN INLETS ARE TO BE MADE OPERATIONAL BEFORE PERMANENT STABILIZATION OF THE CORRESPONDING DISTURBED DRAINAGE AREA. 3.09 TEMPORARY DIVERSION DIKE., A TEMPORARY RIDGE OF COMPACTED SOIL CONSTRUCTED AT 7HE TOP OR BASE OF A SLOPING DISTURBED AREA. TO DIVERT STORM RUNOFF FROM UPSLOPE DRAINAGE AREAS AWAY FROM UNPROTECTED DISTURBED AREAS AND SLOPES TO A STABILIZED OUTLET. TO DIVERT SEDIMENT -LADEN RUNOFF FROM A DISTURBED AREA TO A SEDIMENT -TRAPPING FACILITY SUCH AS A SEDIMENT TRAP OR SEDIMENT BASIN. USE WHEREVER STORMWATER RUNOFF MUST BE TEMPORARILY DIVERTED TO PR07ECT DISTURBED AREAS AND SLOPES OR RETAIN SEDIMENT ON SITE DURING CONSTRUCTION. THESE STRUCTURES GENERALLY HAVE A LIFE EXPECTANCY OF 18 MONTHS OR LESS, WHICH CAN BE PROLONGED WITH PROPER MAINTENANCE. 3.11 TEMPORARY RIGHT-OF-WAY DIVERSION: A RIDGE OF COMPACTED SOIL OR LOOSE ROCK OR GRAVEL CONSTRUCTED ACROSS DISTURBED RIGHTS -OF -WAY AND SIMILAR SLOPING AREAS. TO SHORTEN THE FLOW LENG7H WITHIN A SLOPING RIGHT-OF-WAY 7HEREBY REDUCING THE EROSION P07EN77AL BY DIVERTING STORM RUNOFF TO A STABILIZED OUTLET. GENERALLY EARTHEN DIVERSIONS ARE APPLICABLE WHERE THERE WILL BE LITTLE OR NO CONSTRUCTION TRAFFIC W17HIN THE RIGHT-OF-WAY. GRAVEL STRUCTURES ARE MORE APPLICABLE TO ROADS AND OTHER RIGHTS -OF -WAY WHICH ACCOMMODATE VEHICULAR 7RAFFIC. A TEMPORARY BARRIER OR DAM WITH A CONTROLLED STORMWATER RELEASE S7RUCTURE FORMED BY CONSTRUCTING AN EMBANKMENT OF COMPACTED SOIL ACROSS A DRAINAGEWAY. TO DETAIN SEDIMENT -LADEN RUNOFF FROM DISTURBED AREAS IN "WET" AND "DRY" STORAGE LONG ENOUGH FOR THE MAJORITY OF THE SEDIMENT TO SETTLE OUT. APPLIES BELOW DISTURBED AREAS WHERE THE TOTAL CONTRIBU77NG DRAINAGE AREA IS EQUAL TO OR GREATER THAN THREE ACRES THERE MUST BE SUFFICIENT SPACE AND APPROPRIATE TOPOGRAPHY FOR THE CONSTRUCTION OF A TEMPORARY IMPOUNDMENT. STRUCTURALLY LINED APRONS OR OTHER ACCEPTABLE ENERGY DISSIPA77NG DEVICES PLACED AT THE OUTLETS OF PIPES OR PAVED CHANNEL SECTIONS. TO PREVENT SCOUR AT STORMW47ER OUTLETS, TO PROTECT 7HE OUTLET STRUCTURE, AND TO MINIMIZE THE P07EN77AL FOR DOWNSTREAM EROSION BY REDUCING THE VELOCITY AND ENERGY OF CONCENTRATED STORMW47ER FLOWS APPLICABLE TO 7HE OU7LETS OF ALL PIPES AND ENGINEERED CHANNEL SECTIONS. J. 19 RIPRAP: A PERMANENT EROSION -RESISTANT GROUND COVER OF LARGE LOOSE ANGULAR STONE WITH FILTER FABRIC OR GRANULAR UNDERLINING. TO PROTECT THE SOIL FROM THE EROSIVE FORCES OF CONCENTRATED RUNOFF, SLOW THE VELOCITY OF CONCENTRATED RUNOFF WHILE ENHANCING THE P07EN77AL FOR INFIL7RATION, AND TO STABILIZE SLOPES WITH SEEPAGE PROBLEMS, AND/OR NON -COHESIVE SOILS. USE WHEREVER SOIL AND WATER INTERFACE AND THE SOIL CONDITIONS, WATER TURBULENCE AND VELOCITY, EXPECTED VEGETA7VE COVER, ETC., ARE SUCH THAT THE SOIL MAY ERODE UNDER 7HE DESIGN FLOW CONDITIONS. 3.31 TEMPORARY SEEDING THE ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY SEEDING WITH APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS TO REDUCE EROSION AND SEDIMENTATION BY STABILIZING DISTURBED AREAS THAT WILL NOT BE BROUGHT TO FINAL GRADE FOR A PERIOD OF MORE THAN 30 DAYS. TO REDUCE DAMAGE FROM SEDIMENT AND RUNOFF TO DOWNSTREAM OR OFF -SITE AREAS, AND TO PROVIDE PROTECTION TO BARE SOILS EXPOSED DURING CONSTRUCTION UNTIL PERMANENT VEGETATION OR 07HER EROSION CONTROL MEASURES CAN BE ESTABLISHED. 3.32 PERMANENT STABILIZATION: THE ESTABLISHMENT OF PERENNIAL VEGETATIVE COVER ON DISTURBED AREAS BY PLANTING SEED. TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM DISTURBED AREAS TO PERMANENTLY STABILIZE DISTURBED AREAS IN A MANNER THAT IS ECONOMICAL, ADAPTABLE TO SITE CONDITIONS, AND ALLOWS SELECTION OF 7HE MOST APPROPRIA7E PLANT MATERIALS TO IMPROVE WILDLIFE HABITAT. TO ENHANCE NATURAL BEAUTY. UPON COMPLETION OF CONSTRUCTION ACTIVITIES, ALL AREAS WILL RECEIVE A PERMANENT VEGETA7VE COVER. 3.38 TREE PRESERVATION AND PROTECTION: PR07ECT70N OF DESIRABLE TREES FROM MECHANICAL OR OTHER INJURY DURING LAND DISTURBING AND CONSTRUCTION ACTIVITY. TO ENSURE THE SURVIVAL OF DESIRABLE TREES WHERE THEY WILL BE EFFECTIVE FOR EROSION AND SEDIMENT CONTROL, WATERSHED PROTECTION, LANDSCAPE BEAUTIFICATION, DUST AND POLLUTION CON7ROL, NOISE REDUCTION, SHADE AND 07HER ENVIRONMENTAL BENEFITS WHILE THE LAND IS BEING CONVERTED FROM FOREST TO URBAN -TYPE USES. APPLIES IN TREE -INHABITED AREAS SUBJECT TO LAND DISTURBING ACTIVITIES. 3.39 DUST CONTROL: REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING, DEMOLITION AND CONSTRUCTION ACTIVITIES. TO PREVENT SURFACE AND AIR MOVEMENT OF DUST FROM EXPOSED SOIL SURFACES AND REDUCE THE PRESENCE OF AIRBORNE SUBSTANCES WHICH MAY DOCCECONTI MEASURES SHALL B1 E EMPLOYED R�O PREVENT SURFACE AND AIR DUSTMOVEMENT OF SOIL DESCRIPTION DUST DURING CONSTRUCTION. MEASURES EMPLOYED SHALL BE IN ACCORDANCE WITH 7HE VESCH. 4E - ASHE LOAM, 257 TO 45% SLOPES. SOIL IS SOMEWHAT EXCESSIVELY DRAINED, WITH MORE THAN 80 IN. DEPTH TO THE WATER TABLE. MADE FROM RESIDUUM WEATHERED FROM GRANITE AND GNEISS, THIS SOIL HAS CONVEX DOWN AND ACROSS -SLOPE SHAPE. 7H1S SOIL HAS NO FREQUENCY OF BONDING OR FLOODING AND A VERY LOW TO HIGH KSAT WITH MODERATE LOW WATER CAPACITY. 5B - BELVOIR LOAM-27 TO 7% SLOPES. SOIL IS SOMEWHAT POORLY DRAINED, WITH 12 TO 24 INCHES TO THE WATER TABLE. MADE FROM RESIDUUM WEATHERED FROM GRANITE AND GNEISS, THIS SOIL HAS CONCAVE DOWN -SLOPE AND CONCAVE ACROSS -SLOPE SHAPE. NO FREQUENCY OF PONDING OR FLOODING, AND MODERATELY LOW TO MODERATELY HIGH KSA T. 7B - BRA DD0CK CLAY LOAM-2% TO 77. SLOPES. SOIL /S WELL DRAINED, WITH MORE THAN 80 INCHES TO THE WATER TABLE. MADE FROM ALLUVIUM AND COLLUWUM DERIVED FROM ACID CRYSTALLINE ROCKS, THIS SOIL HAS CONVEX DOWN -SLOPE AND LINEAR ACROSS -SLOPE SHAPE. NO FREQUENCY OF BONDING OR FLOODING, HIGH WATER CAPACITY, AND MODERATELY HIGH TO HIGH KSAT 37C3 - HAYESVILLE CLAY LOAM-7% TO 151w SLOPES. SOIL IS WELL DRAINED, WI7H MORE THAN 80 INCHES TO 7HE WATER TABLE. MADE FROM RESIDUUM WEATHERED FROM GRAN17F AND GNEISS, THIS SOIL HAS CONVEX DOWN -SLOPE AND CONVEX ACROSS -SLOPE SHAPE. NO FREQUENCY OF BONDING OR FLOODING, HIGH WATER CAPACITY, AND MODERATELY HIGH TO HIGH KSAT REFERENCE: WEB SOIL SURVEY ONLINE DATABASE, FOUND AT h t tp: //web soilsurvey.nres. usdo. go vloppIWebSoilSurvey.ospx EROSION CONTROL NOTES ES-1: UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATONS. ES-2: THE PLAN APPROVING AUTHORITY MUST BE N077FIED ONE WEEK PRIOR TO THE PRE-CONS7RUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY; AND ONE WEEK PRIOR TO THE FINAL INSPECTION. ES-J.-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 SI7F AT ALL TIMES. ES-5.-PRIOR TO COMMENCING LAND DISTURBING ACTIO77ES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING BUT NOT LIM17ED TO, OFF-S17E 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. ES-6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDIT70NAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTAT70N AS DETERMINED BY THE PLAN APPROVING 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 /S ACHIEVED. ES-8: DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED WATER FILTERING DEVICE. ES-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. EROSION CONTROL NOTES 1. THE PLAN APPROVING AUTHORITY MUST BE N077FIED ONE WEEK PRIOR TO THE PRE-CONS7RUC77ON CONFERENCE, ONE WEEK PRIOR TO 7HE 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 NRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. J. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING. 4. A COPY OF THE APPROVED EROSION AND SEDIMENT CON7ROL PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES. 5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES /N 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 7HE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AU7HORITY. 6. 774E CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY 7HE PLAN APPROVING AUTHORITY. 7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING S17E DEVELOPMENT UN77L FINAL STABILIZATION IS ACHIEVED. 8. 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 EFFEC77VENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. 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 SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS. 12. BORROW OR WAS7E AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING ORDINANCE SECT70N 5.1.26.. 13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WI7H SECTION 13-301 OF 7HE CODE OF ALBEMARLE. 14. BORROW FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO THE HOURS OF 7.•OOAM TO 9:OOPM. 15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAN MAINTAINS LATERAL SUPPORT, OR ORDER TO MINIMIZE ANY HAZARD TO PERSONS PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC STREET BECAUSE 0 SLIDES SINKING OR COLLAPSE. 16. 7HE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR CONVERT TO PERMANENT STORMWATER MANAGEMENT FACIL177ES WHERE APPLICABLE ALL EROSION CONTROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF THE SALE OF ANY LOT, UNIT BUILDING OR OTHER PORTION OF 7HE PROPERTY. 17. TEMPORARY STABILIZAT70N 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 S7RAW MULCH IS TO BE APPLIED AT BOLBS/10OSF. ALTERNATIVES ARE SUBJECT TO APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR. 18. PERMANENT STABILIZA7ON SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH. AGRICUL7URAL GRADE LIMESTONE SHALL BE APPLIED AT 90LBS 1000SF INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. FERTILIZER SHALL BE APPLIED AT 1000LBS ACRE AND CONSIST OF A 10-20-10 NU7RIENT MIX. PERMANENT SEEDING SHALL BE APPLIED AT 180LBS/ACRE AND CONSIST OF 95% KENTUCKY 31 OR TALL FESCUE AND 0-5% PERENNIAL RYECRASS OR KENTUCKY BLUEGRASS. S7RAW MULCH IS TO BE APPLIED AT 80LB5110OSF. ALTERNATIVES ARE SUBJECT TO 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 REPAIR 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 CON7ROL 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 VEGETATON SHALL BE INSTALLED ON ALL DENUDED AREAS WITHIN NINE (9) MONTHS AFTER THE DA7E 7HE LAND DISTURBING ACT70TY COMMENCED. (WATER PR07ECT70N ORDINANCE SECTION 17-2078) DESCRIPTION OF EROSION & SEDIMENT EROSION CONTROL NOTES & NARRATIVE CONTROL MEASURES: PURPOSE., THE PURPOSE OF THIS LAND -DISTURBING ACTIVITY IS TO CREATE THE ROADWAY AND LOTS FOR GLENBROOK EROSION AND SEDIMENT CONTROL MEASURES, PHASE ll. THE TOTAL ACREAGE TO BE DISTURBED IS 70.93 ACRES. IT /S ANT7CIPATED THAT A SEDIMENT BASIN, CONSTRUCTION ENTRANCE, EXIS77NG SITE CONDITIONS. CONSTRUC7ION ROAD STABILIZATION, RIGHT OF WAY DIVERSION, DIVERSION DIKE, THE EXISTING PARCEL IS VACANT AND HILLY. THERE IS AN EXISTING STREAM THAT RUNS ALONG THE OUTLET PROTECTION, INLET PROTECTION, TREE PROTECTION AND SILT FENCE WILL SOUTHERN SIDE OF 7HE PARCEL. THE S7REAM FLOWS WEST TO EAST ALONG 7HE PROPERTY LINE. THE SITE IS GENERALLY WELL DRAINED AND SLOPES FROM THE NORTH TO THE SOUTH. EROSION AND SEDIMENT CONTROL BE INSTALLED TO CONTROL SURFACE DRAINAGE. TEMPORARY SEEDING WILL BE MEASURES HAVE BEEN DESIGNED TO CONFORM TO THE EXIS77NG SI7F SLOPE AND PROTECT THE PERIMETER USED IMMEDIATELY FOLLOWING ALL LAND DISTURBANCE ACTIVITIES. TEMPORARY STREAMS AND ADJACENT PROPERTIES. STOCKPILE AREAS WILL BE MAINTAINED FROM TOPSOIL THAT WILL BE STRIPPED ADJACENT AREAS,• FROM AREAS TO BE GRADED AND STORED FOR LATER SPREADING. STOCKPILE 7HE SITE /S POSITIONED BETWEEN GLENBROOK AT FOOTHILLS PHASE I SUBDIVISION TO THE NORTH, FOOTHILL LOCA77ONS SHALL BE ON SITE AND SHALL BE STABILIZED WITH A TEMPORARY CROSSING ll TO THE WEST, THE CONNECTOR ROAD/EASTERN AVENUE AND FOOTHILL CROSSING SUBDIVISION TO VEGETATVE COVER. PERMANENT SEEDING WILL BE PERFORMED FOR ALL AREAS THE EAST, AND WESTLAKE HILLS TO 7HE SOUTH. THE GLENBROOK AT FOOTHILLS SUBDIVISION IS CURRENTLY WHICH WILL NO LONGER BE EXCAVATED AND WHERE CONSTRUC770N ACTIV177ES UNDER CONS7RUCT7ON. 7HE FOOTHILL CROSSING SUBDIVISION AND THE LOTS LOCATED ALONG JONNA STREET ARE OCCUPIED. HAVE CEASED. PERMANENT SEEDING SHALL ALSO BE PERFORMED FOR ALL OFFSITE LAND DISTURBANCE.• DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR A YEAR OR MORE. THERE IS NO OFFSITE LAND DISTURBANCE REQUIRED WITH THIS PLAN. SELECTION OF SEED MIXTURE WILL DEPEND ON THE 77ME OF YEAR APPLIED. CRI77CAL AREAS: TEMPORARY SEEDING WILL BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL NO PRESERVED STEEP SLOPES ARE PROPOSED TO BE IMPACTED. STREAMS, STREAM BUFFERS, SWM FOREST & BE LEFT DORMANT FOR MORE THAN SEVEN DAYS. THESE AREAS SHALL BE OPEN SPACE EASEMENTS AND OCCUPIED RESIDENTIAL LOTS ARE TO BE PROTECTED. SILT FENCE SHALL SEEDED WITH FAST GERMINATING VEGETATION IMMEDIATELY FOLLOWING GRADING PROTECT EXISTING HEATHERFIELD LANE. OF THOSE AREAS SELECTION OF SEED MIXTURE WILL DEPEND ON THE TIME OF OIL YEAR APPLIED. SEES BOUNDARIES AND NAMES ON THE PHASE I EROSION AND SEDIMENT CONTROL PLAN, AND THIS SHEET FOR THE SOIL DESCRIP77ONS. 3.01 SAFETY FENCE - SAFETY FENCE WILL BE INSTALLED AROUND THE SEQUENCE OF CONSTRUCTION: PROPOSED SEDIMENT BASIN. 1. NOTIFY ALBEMARLE COUNTY TO SCHEDULE A PRE-CONSTRUC77ON MEETING AS REQUIRED. 3.02 CONSTRUC7ION ENTRANCE - ONE CONSTRUCTION ENTRANCE SHALL BE 2. NO EROSION CONTROL MEASURES MAY BE REMOVED DURING THE CONSTRUCTION PROCESS WITHOUT THE INSTALLED. THIS WILL BE THE ONLY POINT OF INGRESS AND EGRESS TO THE APPROVAL FROM THE ESC INSPECTOR ON THE PROJECT. SITE CARE WILL BE TAKEN TO PROTECT ADJACENT ROADWAYS FROM TRANSFER J. CONTRACTOR SHALL IDEN77FY THE LIMITS OF DISTURBANCE AND THE SWM FOREST AND OPEN SPACE OF SEDIMENT EASEMENTS AND INSTALL TREE PROTECTION TAPE ALONG THE BOUNDARIES AS SHOWN ON THE ESC PHASE IV PLAN. THE CONTRACTOR SHALL INSTALL TREE PR07EC77ON FENCING WHERE INDICATED ON THE PLANS 3.05 SILT FENCE- SILT FENCE WILL BE PLACED ON THE DOWNSTREAM SIDE OF BEFORE ANY S17E DISTURBANCE SHALL TAKE PLACE. CONTRACTOR SHALL ENSURE 7HAT TREES TO BE DISTURBANCE WHERE NOTED ON THE PLANS. SAVED ARE FLAGGED ALONG THE LIMITS OF CLEARING. 307 STORM DRAIN INLET PROTECTION- /P WILL BE INSTALLED ON EACH 4. INSTALL THE PAVED CONSTRUCTION ENTRANCE WITH WASH RACK AS SHOWN ON THE PLANS. PROPOSED INLET AS SHOWN ON THE PLANS CONSTRUCTION ENTRANCE TO BE INSTALLED WHERE CONSTRUCTION VEHICLE ROUTES INTERSECT PAVED 3.09 TEMPORARY DIVERSION DIKE- A DIVERSION DIKE WILL BE USED AROUND PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIM1ZE THE TRANSPORT OF SEDIMENT BY (VEHICULAR) THE PERIMETER OF S17E DISTURBANCE WHERE SHOWN ON 7HE PLANS TO DIRECT TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD THE ROAD SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE RUNOFF TO ON-S/7E SEDIMENT CONTROL FACILITIES.SURFACE, REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPOR77NG TO A SEDIMENT CONTROL 311 TEMPORARY RIGHT-OF-WAY DIVERSION- A TEMPORARY RIGHT-OF-WAY DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS DIVERSION IS PROPOSED AT THE CONSTRUCT70N ENTRANCE, LOCATED ON THE MANNER. INSTALL THE WASH RACK UPHILL FROM THE PROPOSED SEDIMENT BASIN LOCATION. A DIVERSION CONNECTOR ROAD. SHALL BE INSTALLED WHERE SHOWN ON THE PLANS, DIREC77NG RUNOFF FROM THE SIT[, WASH RACK, 314 TEMPORARY SEDIMENT BASIN -TEMPORARY SEDIMENT BASIN WILL BE CONSTRUCTION ENTRANCE AND RIGHT-OF-WAY DIVERSION TO THE SEDIMENT BASIN. ACSA WILL DETERMINE INSTALLED WHERE SHOWN ON THE PLANS. THE APPROPRIATE METHOD OF SUPPLYING WATER TO THE WASH RACK. PARKING AND CONSTRUCTI0N ENTRANCE AREAS SHALL BE CLEARED OF ALL VEGETATION R0075 OR OTHER OBJEC770NABLE MATERIALS 3.18 OUTLET PROTECTION- TO BE PROVIDED AT THE OU7FALL OF DRAINAGE BEFORE CONSTRUCTION ROAD STABILIZAT70N IS INSTALLED. PIPES WHERE SHOWN ON PLANS. 5. INSTALL THE REMAINING INITIAL CONSTRUC770N MEASURES AS SHOWN ON THE PHASE l EROSION CONTROL 3.19 RIPRAP- RIPRAP SHALL BE INSTALLED AS OUTLET PROTECTION WHERE PLAN SHEETS. THIS INCLUDES THE SEDIMENT BASIN SILT FENCE WITH WIRE BACKING AND THE DIVERSION SHOWN ON THE PLANS, AS WELL AS AT THE UTILITY STREAM CROSSING BERMS STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS BERMS TRANSITIONS. AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION. MEASURES INTENDED TO TRAP SEDIMENT SHALL BE 331 TEMPORARY SEEDING- TEMPORARY SEEDING SHALL BE APPLIED WHERE CONSTRUCTED AS A FIRST STEP WITH ANY LAND DISTURBANCE ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. SHOWN ON THE PLANS. 6. ONCE ALL THE EROSION CONTROL ITEMS HAVE BEEN INSTALLED AS SHOWN ON THE PHASE l EROSION 3.32 PERMANENT SEEDING- PERMANENTLY SEEDING SHALL BE APPLIED WHERE CONTROL PLAN AND THE INSPECTOR HAS APPROVED THE EROSION CONTROL MEASURES, THE CONTRACTOR SHOWN ON THE PLANS CAN BEGIN GRADING OPERATIONS. THE CONTRACTOR SHALL ENSURE THE EROSION & SEDIMENT CONTROL 338 TREE PRESERVA77ON AND PROTECTION- TREE PRESERVA77ON FENCING MEASURES SHOWN ON THE PHASE H EROSION CONTROL PLAN SHEETS ARE INSTALLED. MEASURES SHALL BE INSTALLED WHERE SHOWN ON THE PLANS NO TREES SHALL BE INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP WITH ANY LAND DISTURBANCE ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. HARMED OUTSIDE OF THE LIMITS OF TREE PROTECTION FENCING. 7. THE CONTRACTOR SHALL ROUGH GRADE THE ROAD AND ITS 77E-IN SLOPES TO THE CONTOURS SHOWN ON 3.39 DUST CONTROL- DUST CON7ROL SHALL BE APPLIED THROUGHOUT THE SITE THE ESC PHASE V PLAN. WHERE SHOWN ON THE PLANS. 8. 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 STORMWATER MANAGEMENT.- SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL STORMWA7ER QUANTITY AND UTILITY COMPLIANCE IS MET THROUGH THE USE OF Q Q REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS. PERMANENT STABILIZAT70N SHALL E B B ( ) SWM FOREST & OPEN SPACE EASEMENTS AND WET PONDS. SEE APPROVED APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. 9. THE CONTRACTOR CAN THEN BEGIN INSTALLING THE PROPOSED UTILITIES, CURB AND GUTTER, STORM FOOTHILL CROSSING AMENDMENT /fr3 VSMP PLANS AND CALCULATIONS SEWER AND THE CONNECTOR ROAD. IMMEDIATELY FOLLOWING THE INSTALLATION OF THE DROP INLETS, INLET PROTECTION SHALL BE INSTALLED. INLET PROTEC7ON SHALL BE INSPECTED AFTER EACH RAINFALL MAINTENANCE.- EVENT AND REPAIRS SHALL BE MADE AS NEEDED. IF THE STONE FILTER BECOMES CLOGGED WITH SEDIMENT SO THAT IT NO LONGER ADEQUATELY PERFORMS ITS FUNCTION, 7HE STONE MUST BE PULLED IN GENERAL, DURING CONSTRUCTION THE RLD OR CONTRACTOR ON -SITE WILL CHECK AWAY AND CLEANED AND/OR REPLACED. INSTALL ANY REMAINING EROSION CONTROL ITEMS AS SHOWN ALL EROSION AND SEDIMENT CONTROL MEASURES DAILY AND AFTER EACH ON THE ESC PHASE Vl PLAN. SIGNIFICANT RAINFALL. MONITORING REPORTS WILL BE REQUIRED FROM THE RLD IF 10. NO ITEM SHALL BE REMOVED UNLESS THE UPSTREAM AREAS ARE STABILIZED AND THE INSPECTOR GIVES NEEDED. SPECIFIC ATTENTION WILL BE GIVEN TO THE FOLLOWING ITEMS:PERMISSION. a. SEDIMENT BASINS WILL BE CLEANED AND MAINTAINED IN ACCORDANCE WITH THE VIRGINIA EROSION &SEDIMENT CONTROL HANDBOOK. 11. MAINTAIN ALL EROSION CONTROL MEASURES AS SPECIFIED IN THE VIRGINIA EROSION AND SEDIMENT ET PROTECTION AND GRAVEL OUTLETS WILL CHECKED REGULARLY FOR b. INLET NLDIMENT CONTROL HANDBOOK, REMOVING ONLY WHEN APPROVED BY THE LOCAL PROGRAM ADMINISTRATOR IN SEBUILDUP THAT WILL PREVENT PROPER DRAINAGE. IF THE GRAVEL IS SE A ACCORDANCE WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. CLOGGED BY SEDIMENT, THE GRAVEL WILL BE REMOVED AND CLEANED, OR IT WILL 12. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER BE REPLACED. FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS c.ALL SILT FENCE BARRIERS WILL BE CHECKED REGULARLY FOR UNDERMINING OR 07HERWSE AUTHORIZED BY THE LOCAL PROGRAM ADMINISTRATOR. TRAPPED SEDIMENT AND 7HE DISTURBED DETERIORAT70N OF THE FABRIC AND REPAIRED AS REQUIRED. SEDIMENT SHALL SOIL AREAS RESULTING FROM THE DISPOS177ON OF TEMPORARY MEASURES SHALL BE PERMANENTLY BE REMOVED WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHED HALF WAY TO STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. THE TOP OF THE BARRIER. d. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO SEE THAT A GOOD STAND IS MAINTAINED. AREAS SHOULD BE FER77LIZED AND RESEEDED AS NEEDED. IN CASE OF EMERGENCY, THE PRIMARY CONTACT FOR THE PROJECT WILL BE THE RLD OR CONTRACTOR ON -SITE THE CONTRACTOR WILL BE DETERMINED AT 774E TIME THE CONTRACT IS AWARDED. IN ADDITION THE OWNER MAY BE CONTACTED, MR. ALAN TAYLOR. UPON COMPLETION OF THE PROJECT THE OWNER WILL BE RESPONSIBLE FOR SITE MAINTENANCE. TABLE 331-B ACCEPTABLE TEMPORARY SEEDING PLANT MATERIALS -QUICK REFERENCE FOR ALL REGIONS" Rate Planting Dates SKcies lbs. acre Sept. 1 - Feb. 15 50/50 Mu of Annual Ryegrass multi-flomm)multi-flommm) (Lolium & 50 - 100 Cereal (Winter) Rye (Secale ttre {Sec l ile ttre;Ve) Feb. 16 - Apr. 30 Annual Ryegrass (Inlium multi-flomm) 60 - 100 May 1 - Aug 31 German Millet (&lar'a italim) 50 Source: Va. DSWC TABLE 3.39-A ADHESIVES USED FOR DUST CONTROL Water Application Dilution Type of Rate Adhesive (Adhesive: Water) Nozzle Gallons/Acre Anionic Asphalt Emulsion 7:1 Coarse Spray 1,200 Latex Emulsion 125:1 Fine Spray 235 Resin in Water 4:1 Fine Spray 300 Acrylic Emulsion (Non -Traffic) 7:1 Coarse Spray 450 Acrylic Emulsion (Traffic) 35:1 Coarse Spray 350 Source: Va. DSWC La i T d , L SECTION A -A PIPE OUTLET TO FLAT AREA W17H NO DEFINED CHANNEL d PLAN SECTION A -A OP PIPE OUTLET CONDITIONS NO SCALE MTER FABRIC ENTRENCHED a• COMPACTED SOIL h 9 IDNBt01E •I - I� IJ �TLI- uIm-II I -Lr�I=11 lF I- II=I-I I T1-I�I 1m II� IlT L�II 1�1�1111�11�11=IIIJ1= - e• 1@t�OY �~ Bo TEMPORARY 24" DIVERSION BERM 1. SET POSTS AND EXCAVATE A 4"X4" TRENCH UPSLOPE ALONG THE LINE OF POSTS. 2. STAPLE WIRE FENCING TO THE POSTS. SILT FENCE sF (WITH WIRE SUPPORT) NO SCALE Paved camtruction entrance for erosion control plans IsT9UOd1 '. ESS 3 SM-1A ASv"4Iax '0- CIX _F. ]S : AccREu PROFILE 70• MIN. �TIV :➢M'.-. e. "i-'. ASP y PAVED wwSMaACR €nsn"D It 2x PAVEVI NI � 12'Ma•• •MUS' ENIENJ FA_ arDtN L-0 !-TOSEDIITME ONNWIGC 0 ENMENT AND a INCRI [CRESS TRAP"w. DEVICE IWERATgN PJBN IY MN. H a% TO rRA SECTION A -A a oral t L't Ilr wi NI ssaa ! tl A Rluwl wt rr tap of 1 ewN I u P ae , ummwwl 1 ekq bako AuNoH rah-r mipplym a wa 11 II Hitha ,6awdo, of 1 ' wataw for adequMe tol69blll pleAaue Wall watt" uaw br ,aalwd ao'aN hwu the 01"Mre to an applocN eetdug as to Ianorr snlanal as .r+Wnnll •ha0 be yln'mlal buw alnwa stww AIAum, CII of walnrnmsrs PAVED WASH RACK I I II _I k f: Cat•. I r�.. Jill/ •iY'i I'i'i'i •ti '.�i : �.•� :•>ll -_� 1 Y_- i i sue`-.-.�9y�,.•r. •hw i7 i is I I I1� W Source: Adapted from Comed Plastics and Plate 3.01-1 DO REsjLjERsU3IiillIn TOTAL LBS GENERAL SLOPE (3:1 OR LESS) PER ACRE KENTUCKY 31 fL' 1- 128 LBS. RED TOP GRASS 2 LBS. SEASONAL NURSE CROP 20 LBS. SEASONAL NURSE CROP 150 LBS FEBRUARY 16 THROUGH APRIL ANNUAL RYE MAY 1 THROUGH AUGUST 15 FOXIAIL MILLET AUGUST 16 THROUGH OCTOBER ANNUAL RYE NOVEMBER THROUGH FEBRUARY 15 WINTER RYE NOTES: 1. LIME AND FERTILIZER NEEDS SHALL BE DETERMINED BY SOIL TESTS AND APPLIED IN ACCORDANCE WITH VESCH STD. 3.32. 2. SEEDINGS TO BE MULCHED IMMEDIATELY UPON COMPLETION OF SEED APPLICATION, IN ,ACCORDANCE W/ VESCH STD 3.35. PS PERMANENT SEEDING SCHEDULE NO SCALE (STD. & SPEC. 3.32 OF VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK, 3RD ED.) CURB INLET BLOCK WIRE SCREE CRAWL• FILTER OR #5 COARSE AGGREGATE. OBLOCK & GRAVEL CURB INLET 07-$ IP SEDIMENT FILTER NO SCALE 3 ATTACH THE FILTER FABRIC TO THE WIRE FENCE AND EXTEND IT INTO THE TRENCH. I i H lam/ r�� _ I I � r- 4. BACKFILL AND COMPACT THE EXCAVATED SOIL. FLOW 1 1 1-1 I' - if � T I I- EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. SCOTT/R. CITLLINSZ Lic. No. 035791,E pow 10/19/20 ti S 1 s NA 11 C. r o L E z O a r U Z w o to O z J o a H Ln t7. Z LU H LU / IIIIi 0 N Q � o CD �-_1(14 w w J J U ti M C'7 N M 1 N O N N L J J CO LU U 1 i D U) LU U)ll�^ LU L.L rQ V O N J Q LU 0 W LU Q z O O v LU _2 0 LLJ , �,) W z O O W w F F w a in JOB NO. 112066 SCALE N/A SHEET NO. 8 / ♦ 4 I f / g / / / /Y 1 OF�j LIMITS OF DISTURBANCE, I / / TOTAL AREA=10. ac. ♦ 6 SCOTT R. LLINSZ 67 ---- / / a "'ALI _ -_ ! /A. , / / �� / �� o / Lic. No. 035791 � ♦� �O /, � �/ � �- -_- x - e-� �� i � /i _ / / - pow 10/19/20 0 � / — - -- IE D w / ® i �� ♦ `f�. - x -- _ x —._ _ '�' gg,F r L lv 1— r /. - _ - H 4 --.__ w/ WIRE �5 wL',-� 1 1 PROPERTY BOUNDARY (TYP.) a -AC 41F go to _ � _� �, x_ _ � ,� �• • • ��; / � • •" j Syr _ � � a w/ WIRE SF , - - - I, _ - -u- _ _ \ BACKING � i � A - I Ift ft loss - , W 0 m DRAINAGE DIVIDE (T1)P.) Z J m w CONTRACTOR SHALLINSTALLA R/W t FLOW DIRECTIbN ARROW (TYP.) / -' _ / o DIVERSION ENTRANCE ANDACROSDIVERT CEO OE RUNOFFIOTO RwD �� I �� w THE C w t7. a VI BASIN. THE PROPOSED SEDIMENT PROPOSED PAVEDIP ` H • -- , W TS / CONSTRUCTION ENTRANCE CE j ■ 6 y (12 x70 MIN,) w/ WASH RACK - 6 CRS / o SOILTYPE, 658 �76 L- ,� nn PROPOSED PHASE ACTOR STAGING ' OF ES I LOCATION ION l -IES N o Sp -\ CD PHASES I LOCATION _ o 0 PROPOSED 18" DIVERSION. \ 65 SES I LOCATIONl 0 CONTRACTOR SHALL ENSURE PHASE I DRAINAGE AREA \THE FUELING TANK SHALL BE COMPLETELY o DID POSITIVE SLOPE IS MAINTAINED. DIME T SURROUNDERM WITH A HEAVY MIL PIDE EARTHEN OFA 5cy D MPSTER TO SEDIMENT BASIN BERM SHALL BE STABILIZED AS A _ 640 E FIRST STEP IN DISTURBANCE. SOIL TYPE _ LINING, OR BE PLACED IN AN IMPERVIOUS PHASES I LOCATION O . PROPOSED STOCKPILE OPEN TOP DUMPSTERTHE PROPOSED BERM z o 0 OF FUELING AREA 37C3 OR DUMPSTER SHALL CONTAIN FUEL IN THE l' EVENT OF A SPILL. CONTRACTOR SHALL \ C7) -� SURROUNDED BY SILT FENCE 638 i > ENSURE VOLUME CAPACITY IS 10% LARGER � EXISTING STORI�1WATER � �✓ / � �, \(� - THAN THE MAXIMUM VOLUME OF STORED FUEL. MANAGEMENT FACILITY M u') - V TS --- 1 SF - WIRE / _ - �N} o w/ — \ \ 3 \ BACKING TS \ - - CM .� #� .� PROPOSED 18" DIVERSION. ��,- z, % o - + \ CONTRACTOR SHALL ENSURE h �..� \ �� POSITIVE SLOPE IS MAINTAINED. DID \ W BERM SHALL BE STABILIZED AS A '`" / - CV 0 C FIRST STEP IN DISTURBANCE. �� '� O / CONTRACTOR SHALLENSURE DURING- IP 04 w ESC PHASES I & II, WHEN THE BULK OF - EXISTING TREELINE (TYP.) � `• � ,/ /' � ; , a- \ _ - THE CLEARING & GRADING OPERATIONS Q 64� - -— -- - - - - OCCUW R, THAT THE DOWNSTREAM DG __ i \ DIVERSION IS IN PLACE &FUNCTIONAL '� - Q V \ AT THE END OF EACH DAY. _ / �1 _ SOIL TYPE o - -- -- _ DRAINAGE DIVIDE TYP. \ �� , Q ROPOSED 18" DIVERSION. - - - - - i \ W a � TOR SHALL ENSURE \ \ \ EEG P N - SOILTYPE DDBOS T VE SLOPE BE SS MAINTAINED, AS A / , 1 /' r , POOPt�Og�NCN GR 110 5 PROPOSED SAFETY FENCE, INSTALL SIGNS \ OE�PROP TS FIRST STEP IN DISTURBANCE. I WARNING QUICK SAND, KEEP OUT , I P \\ 68 SPFE� eE O z PROPOSED 30" , w WIRE +\ \ 0 _j O - DRAINAGE AREA TO _ RCP STANDPIPE / \ Q SILT _ �� SF ACKING� '1 r� 1 -moo FENCE = 0.7E AC. _ - - � PROPOSED BAFFLES Nv ,/ � - � . ` � � , , U oI Li \ \ , X W �. _ A > SF w/ WIRE. _ - 0 �� „� x PROPOSED FLAT VDOT CLASSAI E O 63 N \ — O ' � cis ��x' X uj BACKING / - - , � j - A zu `° OUTLET PROTECTION w/ - (n o g30 x I, GEOTEXTILE FILTER FABRIC 06 0 \ / UNDERLAYMENT & VDOT STD. EW-1PC V / z LIMITS OF DISTURBANCE, ��/ 6z/ (_ - ' - ' Mw.. \ _ \ LL1 O z W TOTAL AREA=io.93 ac. W/ WIRE SF �� ,, IZ w �/ _L , - - - / � ` L 14', W1-6, W2-16', D-1 5 i .. �-�'� � � LL / BACKING + 630 � m m . _ V) w - O 6>u TREE o • \ I / ' TREE x TP PROTECTION - - s '� \ PROTECTION TP �' � PR`f — Lu 6 RCP BARREL v , _s-- — - _---- WIRE _ BACKING a _ / \ O ------_ s s s_ ---------- - _ _ _ _ S x PROPOSED TREELINE (TYP.) \ w u ---:-..-- - - -.,. w E SOIL TYPE \ \ \ % 0- = o 4E V a 1 ' d to J I �_ PROPERTY BOUNDARY TYP. / \ _\ � JOB No , J 112066 0 GRAPHIC SCALE (TYP.) - - - N - \ N O SCALE 4/ 0 20 40 80 1� ♦ O �f _ _ _ - e _ n i — — ( IN FEET) _ SHEET NO, I-- - V � 1 inch = 40 ft. ) I n LIMITS OF DISTURBANCE, ; / //� / 4 i // / /g r / /�I / /� OBIT / � //.." )� I /.��" TOTAL AREA=io.93 ac. / - �_ I � O / �\// �pl✓ 6T0 ---` 611 -- I /// i/q��ti\\\v�� OSCOTT R. LLINS __-- _ _—� �-_ `O 10/19/20 C`so � w _ - ' T IELyw _ w� "i� W �_� w/ WIRE �5„O �,�- r PROPERTY BOUNDARY (TYP.) _ w _ g10 _ 10 w WIRE BACKING SF ift � 1000 s go sp on w lots �J w M 54 CONTRACTOR SHALL INSTALL A R/W / O z _ - / o <r S4\ / DIVERSION ACROSS THE CONSTRUCTION n , z 3 6 ENTRANCE AND DIVERT CE RUNOFF TOWD I ''~AA W 6 ss THE PROPOSED SEDIMENT BASIN. V l a o -- - `� TS _ 5 Ip - MINI) WASH RACK - j _ PROPOSED PAVED I ` i -- W - — i ` - TS CONSTRUCTION N ENTRANCE CE 66 � 0 12x70 ` PHASE II DRAINAGE AREA CRS --- ^ \ - _ - 58- TO SEDIMENT BASIN M 9.60 ac. i PROPOSED PHASE I 54 CONTRACTOR DC .' a STAGING AREA CD — — — — b;g� / PHASES I LOCATION w OF'PORTA-POTTIES -gyp o 0 S PROPOSED 18" DIVERSION. — n - o CONTRACTOR SHALL ENSURE SURROUNDED BY A 2 DEEP, 2' WIDE EARTHEN OF 15cy DUMPSTER THE FUELING TANK SHALL BE COMPLETELY I PHASES I LOCATION � 6S0_I / f S OSITIVE SLOPE IS MAINTAINED. - D 40 BERM WITH A HEAVY MIL POLYETHYLENE ERM SHALL BE STABILIZED AS A I 640 E ' -� � IR T STE IN DIST4RB�4NCE. 5ry --6 LINING, OR BE PLACED IN AN IMPERVIOUS PHASES I LOCATION S = ° — -' OPEN -TOP \ DUMPSTER. THE PROPOSED BERM OF FUELING AREA OR DUMPSTER SHALL CONTAIN FUEL IN THE I' \ \ FLOW DIRECTION ARROW (TYP.) PROPOSED STOCKPILE 52 5 EVENT OF A SPILL. CONTRACTOR SHALL \ � 0')42 -� SURROUNDED BY SILT FENCE ENSURE VOLUME CAPACITY IS 10% LARGER , EXISTING STORMWATER � �4/ - TH N THE MAXIM M VOLUME OF STORED FU L. 5 MANAGEMENT FACILITY L9 M � + 4 - -- - - rn — -- N o V -w/ WIRE + / - - - t � SF -BACKING 646 M 3 4PROPOSED 18' DIVERSION. o CONTRACTOR SHALL ENSURE- - POSITIVE SLOPE IS MAINTAINED. DID - LLI a \ +� qs + / � BERM SHALL BE STABILIZED AS A / \1 U N (n 0 �� FIRST RTEP IN DISTURBANCE. - Q CONT CTOR SHALL E — — - o — / NSU E DURING _ IP / G/ W w \ ESC PHASES I & II, WHEN THE BULK OF - EXISTING TREELINE (TYP.) THE CLEARING & GRADING OPERATIONS / . / Q - 64ft - — — OCCUR, THAT THE DOWNSTREAM DC Z 9 DIVERSION IS IN PLACE & FUNCTIONAL 1 - Q ° AT THE END OF EACH DAY. _ % / z Q J DRAINAGE DI D (TYP.)- PROPOSED 18" DIVERS ON. - - - �� LLICONTn GR��GP� �N - TOR SHALL ENSURE D BERM VE SLOPE L BE SS MAINTAINED, AS A PROPOSED SAFETY FENCE, INSTALL SIGNS O, • Pa �� g� oN O "WARNING QUICK SAND, KEEP OUT" ` z QE 'PFLEP S FIRST STEP IN DISTURBANCE. , ` s sP _I L U) 3 4 PROPOSED 30 w/ WIR = V " A RCP STANDPIPE SF ACKING 1 0 1 � R POSED BAFFLES 1 v , 8 ^� 3 � � LIJ \ c� /// — \ DC 6 �� 7 �� /vPOR�NPCE EP E w 0 ti \7 w/ WIRE — 63° �, 1�--1 Lu �- - SF BACKING ' ,'-- - - _ 2U 'b k PROPOSED FLAT VDOT CLASS AI�A \, AGGREGATE OUTLET PROTECTION w/ - —� �_ U) wx GEOTEXTILE FILTER FABRIC �� W �. LIMITS OF DISTURBANCE (L-14', W1-6, W2-16', p-1 D. EW-1PC V / L I 0 / 7 b,r - - ' - MIN.. _ LLI O Z w W TOTAL AREA=1o.93 ac. w/ WIRE \, ��'N �` ` _ Q L _ ,/ UNDERLAYMENT VDOT STD. / '_s \ � � — z / ♦ _ _ BACKING SF 3 \ ' 40 MR —� :!�/ \ U O U J ' k TREE (i o r \ PROTECTION TREE TIP�'� PRRCP BARREL TP PROTECTION E _ 9 --5 _ LLI n y E. -- ---- — — - w/ WIRE '- o \ - -- — --- __ — SF s \ - i 1 \ PROPOSED TREELINE (TYP.) i \\ / w v i \ - U vPR\P NAVF w E w v, 1 o JOB NO. gM #, MN,6 _ -- _ i 112066 0 GRAPHIC SCALE �_ PROPERTY BOUNDARY (TYP.) oP of �— —\ 1 m m .00 4/ 0 20 40 80 ,� ♦ �-j r / SCALE o 40 ( IN FEET) - \ SHEET NO. 1 inch = 40 ft. � N NG n i� 14 �GRP�R� LIMITS OF DISTURBANCE, TOTAL AREA=10.93 ac. � // � ,� ��/� `� �� I � I 1 �I _---� I � / // ,_ /�c, . �•� ��`// / '�O - �� , �, � � A- // / �w r �/ / / / / �ti SC( R. LLINS� 670 - I6, / / / �� ti i O n � I I -'- � , , / / // � �o / .\ Lic. No. 035791,'� 10/19/20 w F•�0 r - , I w � ELF —1 _ ' -. �- � _v / / � '•;' 1 � � i' z Y O PROPERTY BOUNDARY (TYP.) , / /' w — — ACgo- w I w WIRE i BA ro� i► / — _ --- _ 1 - 1 �. , , � CKING SF U E o w Co 1 „ Ln H 3 w o' y .. 1 i I > _ > IP ; --r -- — — — — - - P CONSTRUCTION E OPOS D PAVE - __---, Ip 1'1 Lu - 7 ',(12'x70' MIN.) w/ WASH RACK z _ I o I i IP ---A-`o �� IP s - - IP 1Lu m• 1 4 'PROP SE 1 " D) ERSI - IP IP DD COS TRA SOLOPE IS ENSURE D. IP - S - IP 5 _ , 6w IWIR , � " > _ I 1 1 SHALL BE STABILIZED AS A _ BA(�KIN 640 E IRST STEP I DISTUY %CE. ARROW (TYP.) - PHASE II LOCATION - I 5L9 O COG NGAROA s , �� EXISTING'STORMWATER �� I � 1 1 / \ \-- MANAGEMENT FACILITY julg PHASES III L s - - -------- WIRE44 = y % _ Z \ \ , _ OF 15cy DUMPSTER \ N I� — -- _ ° - _ _ -- — -- _ z t \\.S SF BACKING ., T' - ,-. i"-- �._- - --- � ----1 '1 I � � � �� \��, � 6b0 % \ \ � � M 3 \ - - ^.- I I , PHASES III LOCATION PHASE III �', OF PO_ RTA-POTTIES PROPOSED 18' DIVERSION. _ - W y IP \ CONTRACTOR SHALL ENSUR� Q _ _ o s\\ % n LOCATION OF POSITIVE SLOPE IS MAINTAINED. DID FUELI G ARE � n HE FUEL G TANR SHALL B MPLETEL S 0 NDED BY A 2' - - e \ BERM SHALL BE STABILIZED AS A / / \. N Q — --DEEP, 2' WIDE EARTHEN BERM WITH A HEAVY MIL POLYETHYLENE FIRST ST P I DISTURBAN , \ ' ' s ---; 05 _--- LINING OR BE PLACED IN AN IMPERVIOUS OPEN -TOP DUMPSTER. O � z o - /CN -THE PROPOSED BERM OR DUMPSTER SHALL CONTAIN FUEL IN THE _ IP N Z ll EVENT OF A SPILL. CONTRACTOR SHALL ENSURE VOLUME CAPACITY / N ° H N,T E M I VO- U E F T R D FUEL ��, � ' - t z ',,IS 1 /0 LARGER T / / 1 _-•� , _ _ �� '� o I _I - PHASE III DRAINAGE - ��` LU J = AREA TO SEDIMENT BASI IP ; % � �� '�" J IP / \CONTRACTOR SHALL ENSURE — - - , , LLL.I O INAGE a RAD (TYP.)- I / \ POSITIVE SLOPE IS MAINTAINED, S\ceENCH GR �10N , PROP SED SAFETY FENCE, INSTALL SIGNS OP NCN F- o P BERM SHALL BE STABILIZED AS A 0 " 6 P° Evy BE WARNING QUICK SAND, KEEP OUT F p z Q REP \ / FIRST STEP IN PIS URB E - s sP ___I o E RCP STANDPI P �� Q k a PROPOS w�WI r �� 40— BAFFLES R� \ U z o • X,.' �_ _ �VP�R�N6p,GC - wACKI V — — — — 63° R �^ AI�Auj k S - _ �� x PROPOSEDFLATVDOTCLASS S'� \ % \ - / / OP AGGREGATE OUTLET PROTECTION w/ - \ ul U) I A �x / GEOTEXTILE FILTER FABRIC �/ W U LIMITS OF DISTURBANCE \ / (L=14', W1=6% W2=16', D=1 D. AIN.). ` Lu (%) L / � \ ®� 'MIN.. �\ LLI O z z O z TOTAL AREA=10.93 dC. � . / � / UNDERLAYMENT & VDOT ST \ �N �` j' � l = = LL1 w w/ WIRE - �_ i _ _ w BACKING z f; � b-- S � _- _ - TREE - .-- � � TREE TP PROTECTION e TIP � ; _— - '!—'— - PROPOSED 2q' S � � � ' ; w Hi LJJ o _ � J \ PROTECTION x N, '� RCP BARREL $ I oy t w/ WIRE - - — — -_ — _— -- — -- 5 F s BACKING - �- \ - s -- - - ---- — —% s ---- --s - ` -_- - - -----� s S __ _ _ v - - -- --- , / \ �------- - s s � � N LL_ PROPOSED TREELINE (TYP.) \ Lu Lu O w E w -tom -- - a q JOB NO. J gM _ i 112066 0 0 GRAPHIC SCALE j PROPERTY BOUNDARY (TYP.) joP of N N 4/ 0 20 40 80 ,� ♦ � i , � / SCALE C ( IN FEET) SHEET NO. 1 inch = 40 ft. NG n ��GRpORE / �5 PROPOSED SEDIMENT BASIN SCALE: 1"=20' PROPOSED SAFETY FENCE, INSTALL SIGNS "WARNING QUICK SAND, KEEP OUT"� 640_-- - PROPOSED BAFFLES i / /630 Xs X - now x�x � x Sediment Basin Design drainage area (acres) basin volumes: (using 2' contour intervals) elevation (ft) contour area (sf) 624.00 3238.0 626.00 5016.0 628.00 6956.0 630.00 8970.0 632.00 11084.0 633.00 12179.0 storage required (cy) (67*DA) atering orifice elevation (ft) storage provided at this elevation (cy) able volume before cleanout (cy) (34*DA) Inout elevation (ft) ance from cleanout to orifice (ft) (> V) storage required (cy) (67*DA) ciple spillway crest (ft) storage provided at this elevation (cy) neter of dewatering orifice (in) neter of flexible tubing (in) (orifice+2") C (use 0.45 for bare earth) tc (min) 12yr 3.60 1 25yr 5.30 ble head (ft) Iter riser (in) By capacity, Qp (cfs) :ter trash rack (in) length (ft) on barrel through embankment (ft) Iter of barrel (in) Q 2yr Q 25yr PPV �\P�R\OPO NV IN$ 624 00';INV OUTA623.67 ) ' \ qV ffSC 0TT R. LLINSZ Lic. No. 03579111, 636- ao 10/19/20 �� 1 _ � 634 1 \ / PROPOSED 024" CMP STANDPIPE w/ / TRASH RACK SHALL SERVE AS THE l / RISER STRUCTURE. RISER STRUCTURE SHALL HAVE A RIM ELEVATION=629.92'. / TO PREVENT FLOTATION THE RISER BASE AND BARREL CONNECTION SHALL BE FIRMLY EMBEDDED 6" INTO AN 3.8" THICK CONCRETE FOUNDATION THAT IS 6'x6' AND BURIED BELOW GROUND 6j0 / ROPOSED Vl� / TD. ES-i PROPOSED FLAT VDOT CLASS AI COARSE Mw, T WISPILLWAY CREST OF EMERGENC 2' WITHOUT SPILLWAY 9.60 DESIGN HIGH WATER 'RS-YR. STORM ELEV.) volume (cy) D.,• 0 MIN. 1.0' ------ 303.3 R5� CREST DRY • SrOWE DEWATENNG 744.8� 1333.0 • wEr • "RAG 2074.4 RN 2505.0 SEDIMENT CI.FANOUT POINT V WET • STORAGE REDUCED TO 34 CY./ ACRE] 643.2 design high water (ft) 630.92 627.58 top of dam (t) 633.00 643.2 top width of dam (ft) 10.0 321.6 bottom of basin (ft) 624.00 626.08 approx. bottom dimensions: 18k190' 1.5 upstream face slope: 2:1 downstream face slope: 3:1 643.2 baffles: YES 629.92 length of flow, L (it) 54 667.3 effective width, We (ft) 165 6.0 L I We (baffles not required if> 2) 0.3 8.0 collars: YES depth of water at spillway crest (fl) 5.92 0.45 slope of upstream face (Z1) 2:1 14 slope of barrel (Sb) 0.67 % 15.55 length of barrel in saturated zone (Ls) 36.51 22.90 number collars required 2 dimension of collars 3.Sk3.8' 1.00 emergency spillway: NO 30 required capacity (Q25-Qp) (cis) WA 22.90 bottom width (ft) WA 42 slope of exist channel (ft/ft) WA % 48.92 minimun length of exit channel (ft) N/A 7.25 crest of spillway (ft) N/A 24 AGGREGATE OUTLET PROTECTION w/ GEOTEXTILE FILTER FABRIC UNDERLAYMENT (L-14'W 1=6% W2=16', D=1.5' MIN.). z O a Z N = O 0 N Z J o a �..� Lnn j z w W W M 0') ON V M O W CA N N W W CO O J U 1 W I- w U ~ L w O w a U) JOB NO. 112066 SCALE 1" = 20' SHEET NO. 16