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HomeMy WebLinkAboutFDP201900006 Plan - Submittal (First) 2020-12-30GENERAL NOTES OWNER: STANLEY MAR77N COMPANIES LLC 11710 PLAZA AMERICA DRIVE, SUITE 1100 RESTON, VIRGINIA 20190 DEVELOPER: STANLEY MAR77N HOMES 404 PEOPLE PLACE, SUITE 303 CHARLOT7ESVILLE, VA 22911 ENGINEER: COLLINS ENGINEERING 200 GARRETT ST, SUITE K CHARLOT7ESWLL£, VA 22902 (434)293-3719 TOTAL AREA: 41.4 ACRES (NOT INCLUDING IMP 56-115) ZONING: R-6 RESIDENTIAL WATERSHED: LICKINGHOLE CREEK WATER SUPPLY WATERSHED AGRICULTURAL/ FORESTAL DISTRICT: NONE TOPO & SURVEY., THE BOUNDARY LINE, PARCEL INFORMAT70N AND TOPOGRAPHY WERE PROVIDED BY ROUDABUSH, GALE AND ASSOCIATES IN ✓ANUARY OF 2019. INFORMAT70N WAS FIELD VERIFIED BY COLLINS ENGINEERING IN JANUARY OF 2019. DATUM: NAD 83 EXISTING VEGETATION: PARTIALLY WOODED STREAM BUFFERS: THE 100' STREAM BUFFERS SHOWN HEREON SHALL BE MANAGED IN ACCORDANCE WITH 7HE ALBEMARLE COUNTY WATER PR07EC77ON ORDINANCE FLOODPLAIN: A POR77ON OF THE PROPERTY IS LOCATED WITHIN A FLOODPLAIN ZONE AS SHOWN ON FEMA MAP#51003CO229D, DATED FEBRUARY 4, 2005. Wrzm• XmmrrFrAl This amendment to the floodplain along Powell's Creek is a revision to the recently approved Conditional Letter of Map Revision. The previous case number is 17-03-1753R, and the CLOMR was approved on February 1, 2018, The box culvert and fill proposed for a road crossing approximately 1,896 feet downstream of Cling Land were approved but not installed. The property that was utilizing the crossing has been added to the adjacent property downstream of this crossing, and a new location for the stream crossing over Powell's Creek is being proposed with the development. This new stream crossing, which is a more direct crossing of Powell's Creek, reduces the floodplain and stream impacts. The new crossing is approximately Z856 feet downstream of Cling Lane along Powell's Creek. This amendment to the CLOMR is proposing 3 - New 10'Wx8'H Box Culverts and Fill for a road crossing over Powell's Creek. On September 16th, 2020 Albemarle County approved a Special Use permit for the relocation of the stream crossing on Powell's creek for the purpose of a road connection to Orchard Drive. An updated HEC-RAS model of Powell's Creek has been completed between Cross Sections F and M for the new location of the stream crossing with the box culverts and fill. The affected area is located on FEMA Map 51003C Panel 0229, effective date 214105. The datum for the FEMA study is NA VD 1988. The approved CLOMR and HEC-RA5 modeling from 2017 determined that the existing 615 topography along Po well's Creek in this section of the FEMA Mapping was not accurate. The approved CLOMR updated the modeling and topography between cross sections F and M on this portion of Powell's Creek, creating an effective model that used the FEMA-approved Hydrologic Model for peak flows and cross-section locations. The amendment to this approved modeling utilizes the same parameters (topography, cross -sections, and hydrologic model) as the 2017 approved study. The only revision with this study is the relocation of the box culvert and fill for the stream crossing approximately 960 feet downstream. As part of the approval of Special use permit (5P2019-00002) for the new stream crossing and box culverts, there must be a zero -rise in the 100-year floodplain elevation on all adjoining properties. As shown in the modeling, flood plain study, and reports, there is a zero -rise on all the adjoining properties. The floodplain is not increased on any of the adjoining properties. There is a maximum rise of2.59 feet in the 100-year flood elevation immediately upstream of the crossing and slight rise downstream; however, the floodplain is located completely on the subject properties in the location of the 100 year elevation rise. As shown on the modeling, the 100 year floodplain elevation with the new crossing matches the existing floodplain elevations approximately 192.7 feet upstream of the crossing and 404.6 feet downstream of the crossing. The floodplain is entirely on the subject properties for this portion of Powell's Creek. The fill associated with the road crossing occurs within the floodplain fringe only. There is a zero -rise in the BFE associated with the proposed fill. There is a nominal expansion of the floodway limits due to the fill on the fringes of the floodplain, but this does not impact the BFE. In addition, the new location for the road crossing has been permitted through the USA COE. FLOODPLAIN STUDY FOR POWELLS CREEK IN THE PLEASANT GREEN SUBDIVISION TMP 56-115, 56A1-01-30A1 56A1-01-28, 56A1-01-29R1 56A1-05-A, 56A1-01-25, AND 55C-03-A WHITEHALL DISTRICT ALBEMARLE COUNTY, VIRGINIA SHEET LAYOUT SCALE: 1" = 160' VICINITY MAP SCALE: 1" = 2000J' 0 S / GRAYROCK WAY WAYLANDS GRANT 1; •u,y arri s Old Trail Golf Club P LAUREL HILLS T rr4 k WAYLAND PARK" SIT Crozet 2� Start Hill Bseu R E A PARKSIDE VILLAGE 1 is PARK VIEW Sheet List Table Sheet Number Sheet Title i COVER SHEET 2 EFFECTIVE FLOODPLAIN OVERVIEW 3 FLOODPLAIN REVISED MODEL 4 STREAM CROSSING PLAN & PROFILE 5 STREAM CROSSING EROSION CONTROL PLAN 6 FLOODPLAIN SUMMARY TABLES 3 TOTAL NUMBER OF SHEETS ROADS LEGEND 0 EXISTING CULVERT EARTH DITCH O CULVERT DRIVEWAY CULVERT 0 DROP INLET & STRUCTURE NO. BENCH MARK a CURB CLEARING LIMITS 0 CURB &GUTTER PROPOSED PAVEMENT T EC-3A DITCH 200 EXIS77NG CONTOUR DEPTH OF EC-3A DITCH PROPOSED CONTOUR 240.55 VDOT STANDARD STOP SIGN EC-2 DITCH PROPOSED SPOT ELEVA77ON 6" DEP774 OF EC-2 DITCH 11 SCOTT/R. C'bLLINS'Z Lie. No. 035791 p_ 12/02/20 401 w F O U Z Z OC O 00 w LU U y U w L O w F 0 O > > g w m W LU IJi F z Ul Z J J 0 U Cn M M Cn N M d' N O (n Ld N N J J U7 LU 0 Q U Y LU Cl) LU LU IY U7 LU !Y Q O O N U) z 0L 0 O O 1 W LU LU O U z LU LU r� V z Q Q LU a — JOB NO. 112066 1" =200' 1 _ _ __ El 1 F \ --- \ _ -'�_--------- _\ _-- 1 O --1___ -----------'-----0,\ - - �i -- ---- 0 SCOTT R. LINS Z \ \ \ \ O I I 1 _- H t� L' N 035791 � 12/02/20 c4 \---------- IOATAL BUCKINGHAM BRANCH RAILROAD 6 w-7 - / SM CHAR L6TTESVILLE, LLC TMP 0S6A1-01-00-02S00 ' // =--'- � __ _ _ ! 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L 3994.41 100M Mid 1400 747.97 ].% 116.64 R NS9.W 1NYR Prcpw4d UN ]3].0 am 6.31 119.0 R 19NM 100YR Urd, 1410 ]3].K 631 119.N I 25NA8 103M Primaddl U30 72).)9 GM 7.35 23.17 1 2559.66 IM" FART, 1430 73739 7.35 15337 1 19M.11 Im" Pro 1450 714.43 O.W fis 1MA I 1%9.H 00 YR U.1 II50 114.43 65 103.6 H 2651.13 00M Pmpwd 146] 'NL4 GW 5.93 SMW H 11551.13 NO YR udd, UW ASA I.W 1N.N G6 1151.5 1WYR Propwed 14W N693 O.W 7.36 04,41 G6 1159.5 1W YR EAVir, 149 695.93 7.36 04,41 G9 NS]AS 00 YR P. 14W 694.67 1.51 6.07 315.61 05 107A1 1WYR F91M AW 69326 459 MR W I031.3 00" Pm I4.g1 N 6N 3s9 4.91 31a.] W 031.3 =YR Edgirg 14W 69213 436 SN.38 PRGPMEOOMING 966A wwr, 03 N6.45 1NYR Pmpw.d 141tI 69C.91 a.35 30.12 IN3 03 NB.K 1N YR ERRIN 14W 6N.K 3.91 3U.1 01 BK.K IMM "Radd 14N 60.45 n6I 3.12 15LO 33 135.16 IOD" U91 1440 M." AU 2UI G1 S62,]4 aW YR ",,odd IdW N3.57 PN G." .5.94 GI 512,34 IWYR Etlrtln 149C 69L9 6.67 n&N IWYR Propoe 131C 1 679.4 O.W 0.K 154.3] i 30239 IOD YR Elarting 131C 619A 4,K 1N.31 vv �iii'/ v/ v v v LU \PROPOSED CONNECTION ; / i ;;;' ' \ \ LU TO ORCHARD DRIVE p� W vv O \ y BENCH�}QRK #i ' \ ` "% \ vG �/ /// \ TOP ORSAN. MH - j/,:' %\ O � LLI - It r \ V \ b I \ ❑ O I \ / I I \ \ I \ \ I I \LU LL \\< Q z / \ 0 \ C:)\ O \ Q LEGEND / \ F-1 ioo-YEAR FLOODPLAIN w ' \ � FLOODWAY J \ / \ \ WETLANDS EXISTING POWELL' S CREEK STREAM o 3rw \ FLOODWAY (EFFECTIVE MODEL) "- V) A H ALE 0 Joe NO. _.. ioo-YEAR FLOODPLAIN (EFFECTIVE MODEL) 112066 100 \ 0 i 200 O 3 ' `\ .......... Soo-YR FLOODPLAIN (EFFECTIVE MODEL) SCALE \ 13>_ SUBJECT PROPERTY BOUNDARY 3.11 = 1001 IN FEET ) SHEET NO. \ \ \ \\ inch = 10 ft. \\ REVISED ioo-YEARFLOODPLAIN \ 3 RAMBLING BROOK LANE CENTER LINE DATA: - - - Tangent Data Description PT Station Northing Easting Start: 10+00.000 3913311.780 11422959.805 End: 11+55397 3913411.704 11423078.803 Tangent Data Parameter Value Parameter Value Length: 155387 Course: N 490 58' 45.5333" E Curve Point Data Description Station Northing Easting PC: 11+55.387 3913411.704 11423078.803 RP: 3914560.422 11422114206 PCC: 13+70.121 3913561.071 11423232.821 Circular Curve Data Parameter Value Parameter Value Delta: 080 12' 08.0848" Type: LEFT Radius: 1500.000 Length: 214.734 Tangent: 107.551 Mid -Ord: 3.941 External: 3.851 Chord: 214.551 Course: N 450 52' 41.4909" E Curve Point Data Description Station Northing Easting PCC: 13+70.121 3913561.071 11423232.821 RP: 3914060.747 11422673.513 PT: 14+65.165 3913635.767 11423291.488 Circular Curve Data Parameter Value Parameter Value Delta: 070 15' 38.9702" Type: LEFT Radius: 750.000 Length: 95.044 Tangent: 47.586 Mid -Ord: 1.505 External: 1.508 Chord: 94.980 Course: N 380 08' 47.9633" E Tangent Data Description PT Station Northing Easting Start: 14+65.165 3913635.767 11423291.488 End: 15+79.077 3913729.626 11423356.035 Tangent Data Parameter Value Parameter Vitae Length: 113-912 Course: N 340 3(Y 58.4782" E 1\ \ //i' / / \ CAMPBELL, GORDOf! R / // / / / VUE REALTY W1iiNERS LC \ \ \ \ \ & MADELINE i i % / // / / / / I TMP o56QE-oo-oo- o - - / / / / / / RESIDUE LAND FROM \\ o° \ \ \ \ \ \ \ \ \ \,' \ �TH �F \ \ \ TMP o55Co-oo-oCl-p6o� i T �/ / / / ti.854 a PLEASANT GREEN PHASE I SUBDIVISION \ \ \ \ 0.390 af,/ j i //' i / / Of 4�� 58z _ _ i' \ / / / TO BE COMBINED WITH \\ DB416,P CS 5i / ' �/' / ♦ 5 \ XISTING STREAM TYP. __ p TMP o 6Ai-oi-oo-oz600 j / 'i i % i i' i /' ♦ / - ) / \ _ \ \ \ O SCOTT R. LINSZ \t V / �/� / i / i i / ♦� v / _ - - - _ l - - V A A V U Lic. No. 035791 � ♦�� JORDAN,ROSE M ///�///�////i/� .� /�� ♦ 10,00000 CD \ \ w TMP o55Co-oo-oA-oo4o0 / / / / / A \ f \ \\ � / � � I FLOODWAY p.52p ac. �-- / SUM CHA�O ILL LL/C' / (EFFECTIVE MO_DEL), \ / `\ \ \ \ 4 37, V A o DB o PG ///TMP /5Cd- �_0 �00Ai /// ♦� ♦�--v-- �/ I� / II o AV A A 1 �V / / / �1oo-YEAR FLOOPLAIN �� / \ �� / � L (EFFECTIVE MODEL) e, / /TMP 5 o3-Az� Y 1 \ \ \ PRPPER YLIMITS /� / A V / �� Vo (REVISED D LAIN / PROPOSED VDOT SAD EC-1 I / I \ J �S / L g too -YEAR FLOOD ` \ \ MODEL) / WITH CLASS I RIPRAP I / - \ \ �✓ O a � z o \I 1 1V A\ \\\ V A PROPOSED (3) 8'x3.o' v ��\ N p W u w 0 \ \ \ \ \ \ \ BOX CULVERTS. 1 FaI p /I \o \ \\\\ \\ \\ \ \\ \ 694 �\ \ w r p o LOUNSBURY, KEVIN G \ \ \ \ \ \ \ \ 692 I \ +. `�.N N o O il... O < o OR ANN A \ \ \ \\ \\ r / ' ] TMP 055Co-oo-oA-00200 ' \ \ " \ \ / r / L C° o.56o ac. 700 \ ° o W _ 2 _DB 989, PG 389 N QQ 11+ p s+9° 5 iz+oo iSoo.-i -700 f I Y LUDWIG, DALE & CHRIS ANNE \ TMP 055Co-oo-oA-oo3.00 694 I 1 1 w' ° V o.600 ac. _ v DB 5232, PG 76o / o L N 0 too -YEAR FLOODPLAIN / (EFFECTIVE MODEL) PROPOSED VDOT STD. EC-1 WITH CLASS I RIPRAP / -' I \ AV �IL9 / A /QQ // 69 v % \ / / / • / V \ 1 x \ THE HOUSING LAB LLC TMP o55oo-oo-oo-o68Do \ _ ^ ✓ / // ' \ v v� IA I I 1 07 /y I / I ZD DB5o79�PG3o3 A,." � � /� - �� ,1 (/ ��i � A� \ 'l A\ \` V� / L I / I I� Z� ° p I CV FFLOODWAY \ % \ioo-YEAR FLOODPLAIN \ \\ \ �l * /`L _ W� (was - (EFFECTIVE MODEL) in _1001P (REVISED MODEL) ILL W CA J J ILL THE HOUSING LAB LLC A \ / S 6VA A \VA 1 \ _ v > - TMP055oo-oo-oo-o68Co ' \ / / \\ \�\\ r \\ O 0.53o ac. ' \ \ DB 5079, PG 303 vvi �> I A: 15+00.00 PVI ELEV: 7o6.22 7�5 K: 215.32 715 cn l� \ w' I Al I I \SANITARY SEWER PROPOSED VISH PLEASANT GREEN - PHASE I FINASITE ZA HALLOCK, SYLVIA M & ROSAJIMENEZ-VAZOUEZ J ~ \\ \ \\ \ I \ III I \\ \\ TMP o55oo-oo-oo-o68Bo 0.400 DB 4321, PG 364 // 7f S \ ROP SED CON T N O ISTING \ \\\\\ \\� \\\ \� \\\\� S\ / / 5 ME LK AL G A GAP ROAD\ \ \ \ \ \ \ \ \ \ CHAi1 TE\SVILLIEL'C\ \ \ \ \ \ \TMP 05bRO-00-09-00700 \ \ \ \ \ \ \ \ 1 3.igo ac. \ \ \ \ \ \ \ DB 5112XPG 348\ \ - G PHIC SGAIE PVI TA: 2+47.50 0.00 PVI ELE : 700.58 0 N 'o 0 K:8 .70 0 �0 o LVC:3 0.00 + ° + kD ° °710 o ° a uLij 710 LOW PT. ST:z+37.90 + + °. m m W / Hw ^ > �w ^ > 1, o% > C° > w o 705 \ m PROPOSED GRADE (TYP.) w a � � 705 _ p z Z PROPOSED 700 VDOT STD. CD-1 PROPOSED STD. CD-2 TIE -INTO ALSTON STREET ROUNDABOUT, PROPOSED WITH PLEASANT GREEN PHASE I FINAL SITE PLANT\ STA. 15+07, ELEV.=7o6.35 \ 700 TIE-IN TO EXISTING ORCHARD DRIVE VDOT STA. 1o+io, ELEV.=705.33 ��(T 6 95 P.) 6 95 RAMBLING BR DOK LANE C/L TA 1 + o ARD DRIVE AMBLING BRCOK LANE C/L S A 15+79 EXISTING ORC STREET C/L S ALSTON A 16+42 \ 690 690 PROPOSED (3) 8'(H)x1o'(W) BOX CULVERTS EXISTING GRADE (TYP.) 685 685 �!1 V1 ri M N In M W l0 Ll1 ll1 O lD Cl M N 00 N ri It N �- ri �D ri lD n V1 ri M N N O %D OH V1 N N V1 0 Lrt r\ 0 0 't 00 O cn M O 0 0) N 01 0 00 N M 0 00 N O 0 0l N N O 0)0 r;, rr1 0) .t .t O 0)0 to L!1 0) lD O 0 w r` tD r` ko r` kD r\ r` ko r` J _J Z J nnnnEN LLI a. L9 o z Q O Z Q M Q� WU > z z. Y � ® Ln LLI L/) CO Ul U) _ ur) V Z LLUu I I W Ln .J LI GRAPHIC SCALE J Q z 5 °VERTICAL 20 O O CV 0 ( IN FEET ) 1 inch = 5 1t. W U J HORIZONTAL GRAPHIC SCALE so 0 25 50 100 200 wtu- 0 w V) ( IN FEET ) 1 inch = 50 1t. JOB NO. / •.� \ 0 20 40 / e0 160/ 10+00 10+50 11+00 11+50 12+00 12+50 13+00 13+50 14+00 14+50 15+00 15+50 16+oo SCALE ' \ / RAMBLING BROOK LANE DESIGN SPEED: 25 MPH AS SHOWN \ / POSTED SPEED: 25 MPH SHEET NO. / /inch = 40 Lt,- i - - 4 i W 1I / - - — ` \ \ \ 325 1992 3.25 STREAM OW DIVERSION IEMBANKMENT NKMENT �SOfL TY� — — \ i — — — — — — — — BE EXISTING \ \ I \ OR NON -ERODIBLE, WATERTIGHT �e — �\ \ DIVERSION CHANNEL CROSSING _ moo— — — — �\ �\ _ DIVERSION CHANNEL CROSSING MATERIAL SOILTYPE - � ,— I I — — \ \ \ ACCEPTABLE LININGS SF sF / — — 36D' / / IA PROPOSED STOCKPILE / — — / ' ' i \ \ FLOW TRIPLE BOX PROPOSEDI6"DIVERSION (CROSS SECTION A —A OF PLATE 3 25-1) CULVERT ' \ / v fDRMtl 0O`70N SCOTT/R. Cb�LLINS'Z SURROUNDED BY SILT FENCE I \ / PLEASANT/ ' — — — — ' - \i / / \ / D PROPOSED WITH PLEASANT OF FLOW BARRIER GREENPROPHASE IOSED ICN STRUCTI N' / — — — — 1 \ / �` \ \ \ / GREEN PHASE I CONSTRUCTION SILT FIERCE su F1T+eE Posr PGss SILT FENCE O ~ / J / DC / A / EX. GROUND \� i \ \ 1 LU Lic. No. 035791,1, �� / �\/' / / I 1✓ / 1 \ I \ \ \ X. ` / / SEE PLATE, T.2S-2 DIVERTED STREAM "�A 12/02/20 \ I FOR CROW SECRDN TYPE A DIVERSION o A —A CHANNEL WITH TYPE C LINING (SEE DETAIL (LOOKING SOUTH) S'SIO VA L ECG POLYEfNYIENE 6 NIL. MIN PS ( \ \ / ` oR(� 3.25-2 THIS SHEET) N.T.S. / / VEHICULAR I --� GRA55 LNER STREAM DIVERSION DURING CULVERT INSTALLATION DETAILS EXISTING FENCE cegosslNc sm. f 1 TO BE REMOVED I \ ` � CSPB LOJCATED AT / PLecE �. x/ \ / WITH PLEASANT \ \ ORIGINAL SIRFAMBED - RIPRAP ExIsnNG eRWNU ExISTNG GROUND \ \ FOR INITIAL CROSSINGS) - / GREEN PHASE I \ \ \ \� AT TRANSITIDN '� -f ` TRIPLE CULVERT INSTALLATION NOTES: CONSTRUCTION I 1. CONTRACTOR SHALL INSTALL AND MAINTAIN A STREAM FLOW \/ \I\ DIVERSION PER DIVERSION CHANNEL CROSSING VESCH DETAIL X 3.25-1 AND 3.25-2 DURING ENTIRE TRIPLE CULVERT CONSTRUCTION OPERATION. 2. SILT FENCE SHALL BE INSTALLED ON BOTH SIDES OF THE X I I PROPOSED STREAM DIVERSION CHANNEL. THE CONTRACTOR SHALL . FLOW &wRlEa TYPE B DIVERSION INSTALL AND ADJUST SILT FENCE AS NECESSARY TO PREVENT A SOIL FROM ENTERING THE STREAM. STREAM DIVERSION TO BE A TRAPEZOIDAL DITCH WITH 2:1 SIDE SLOPES, A 5.5' DEPTH AND A RIPR4P FILTER CLOTH 6' WIDE CHANNEL BOTTOM. RIPRAP SHALL BE PROVIDED WITHIN / ORIGINALTHE EXISTING STREAM BED AT THE TRANSITION FROM THE Ia_ / STRFAM— a_ EXISTING STREAMBED TO THE PROPOSED DIVERSION CHANNEL, 3' WIDE TI VDOT CL. Al, E D STONE OUTLET BED Exlsn"c GROUND �' ExISIINC GROUND AND AT THE TRANSITION BACK FROM THE DIVERSION CHANNEL TO f X ' I PROTECTION PROPOSED WITH PLEASANT - �? THE EXISTING STREAMBED. AN APPROVED FLOW BARRIER O y GREEN PHASE I CONSTRUCTION I .. -� (SANDBAGS, PLYWOOD, JERSEY BARRIER, OR EQUIVALENT) SHALL U / SAFETY FENCE & SIGNS _ - - BE INSTALLED BEHIND THE RIPRAP TRANSITION. THE DIVERSION z ce SAF "WARNING QUICK SAND, KEEP SHALL BE A TYPE C DIVERSION (i.e. IT SHALL HAVE A ROCK OR Z O O0 / OUT" PROPOSED WITH PLEASANT 1 / SANDBAG LINER). O Q / / I SOILTYPE / GREEN PHASE ON / 3. THE DIVERSION CHANNEL CROSSING MUST BE OPERATIONAL � 7 / BEFORE WORK IS PERFORMED IN THE STREAM (CONSTRUCTION OF U LWi FLOW. TYPE C DIVERSION \ DIVERSION SHALL BE PERFORMED "IN THE DRY"). N w O / / SOIL BOUNDARY LINE (TYP.) / / / 4. UPON COMPLETION OF THE TRIPLE BOX CULVERT CONSTRUCTION, p PROPOSED BAFFLES I A (/ R,PRAP FILTER CLOTH / \+ AND WITH ESC AND VDOT INSPECTORS' APPROVALS, THE zz Q \ RxK oe s,wognc NECONTRACTOR SHALL REMOVE THE STREAM DIVERSION AND ALLOW � FBI / STREAM FLOW TO RESUME THROUGH THE EXISTING CHANNEL & / B1 \ ` TRIPLE BOX CULVERT. > > DO EwSTINC GROUND �'I ti' EXIS➢NG GROUND 5. ONCE THE STREAM RETURNS TO ITS NATURAL ALIGNMENT AND Z) \ \\ PASSES THROUGH THE TRIPLE BOX CULVERT, THE CONTRACTOR Lu / PROPOSED 1A" DIVERSION \ / / / - -' / SEDIMENT BASIN _ \� FLOW BARRIER SHALL REMOVE THE TYPE C DIVERSION (RIPRAP OR SANDBAGS), < DD PROPOSED WITH PLEASANT —' / PROPOSED WITH \� (RAP• SANDBAGS. ANY SEDIMENT LADEN MATERIAL LOCATED WITHIN THE TEMPORARY I- > / I / PLYWOOD, JERSEY .APPROACHING GREEN PHASE I COJVST UCTION / WPO 201900003 WPO 201900003 �� BARRIERS OR SHEET TRENCNINc Fr DIVERSION AND THE TEMPORARY DIVERSION'S EMBANKMENT z PID"G) OOER.noN I (INCLUSIVE OF A NON -ERODIBLE, WATERTIGHT MATERIAL IF k / / AMENDMENT #1 LIMITS AMENDMENT #1 FORMER LOCATION PLACE RIPRAP • g' MINIMUM OR WIDTH OF EXISTING STREAM WHICHEVER IS LESS APPLICABLE). THE CONTRACTOR SHALL REPLACE THE TEMPORARY OF DISTURBANCE _ _ __ Ov FEow aNIMIER AT TRANSITION •• DIVERSION WITH COMPACTED STRUCTURAL FILL PRIOR TO / INSTALLING THE ROAD'S EMBANKMENT. � � � / I / / SILT F NICE W/ WIRE -��- _ ENTRENCH SILT FENCE AND FILTER CLOTH IN SAVE FRENCH SILT FENCE w/ WIRE' I �\ / p BACKING PROPOSED r ` / - \ WITH PLC SANTGREEN �.J M PERSPECTIVE VIEW / \ BACKING PROPOSED ``�N / Source: Va. DSWC Plate 325-1 Source: Adapted from VDOT Standard Sheets Plate 3.25-2 / \ WITH PLEASANT GREEN PHASE I CO STRUL I1UW/,,/ / ' s VHASE I CONSTRUCTION S ' / `' / / / k SOILTYPE EXISTING FENCE TO BE REMOVED w/ WIR +v / CONTRACTOR SHALL INSTALL THE (3) 8'(H)x10'(W) CONCRETE \ '�C ACKI BOX CULVERTS PROPOSED WITH THE CONNECTOR ROAD PLAN I� V I J I "— ` AFTER THE DIVERSION CHANNEL HAS BEEN INSTALLED AND IS '1 ! I / Tp TR E PROTECTIO YC I /X Xl \/ — �I' \ WALLOPES, AIONAL. AFTER THE ND CULVERT RIPRAPOPOSED AVE BEENLVERTS, WING % INSTALLED AND PR�POSED WITH \ ll"" 100, WPO / PLEASANT GREEN PHASE I I i / �L THE ESC INSPECTOR HAS GIVEN APPROVAL, THE DIVERSION / ! / / BUFFER, TYP. / / \ / / \ — — _ — i / I CONSTRUCTION � I / � I / CHANNEL CAN BE REMOVED AND NORMAL FLOW CONDITIONS / / � ` \ I / / - — / / — — / / rq o LIMITS OF TREE (f I CAN RESUME THROUGH THE PROPOSED BOX CULVERTS. — — I I .. I PHASE II GRADING OPERATIONS FOR THE CONNECTOR ROAD I �� EXIST.(NG 100-YR FLOODPLAIN PER / / — - / — o \ BLEARING ASSOCIATED LIMITS OF TREE !� ♦ SHALL NOT BEGIN UNTIL THE PERIMETER ESC MEASURES AND HEC-RAS ANALYSIS PERFORMED BY \ TH WPO 201900003 I \ CLEARING (TYP.) PROPOSED WING WALL I THE PROPOSED BOX CULVERTS HAVE BEEN INSTALLED. COLLINS ENGINEERING IN APRIL 2019, TYP. PROPOSED TRIPLE I W/ WIRE Is L / ♦ / , BOX CULVERT I I ACKING \ / 100-YR FLOODPLAIN /WIRE I PROPOSED IN -STREAM RIPRAP \ ♦ _ (EFFECTIVE MODEL) / BACKIN I CONCRETE BOX I RR AT TRANSITIONS (BEGINNING \� �i �►- — — / I / % CULVERTS & ENDING) OF UTILITY STREAM \ \ \ / ' — — — — 5 Lu CROSSING DIVERSIONX Mo. will / — — — — _� r — ♦ _ / / / �-Y� _F- -r� - 684.0FLOODWAY \ / (EFFECTIVE MODEL S \ / PROPOSED WING WALL / / / ' / -' �— — — — — — — _ \ \ \ Cj Z PROPOSED VDOT STD. EC-1, CLASS I _ \ LIMITS OF l / / � � � � \ � � -C � � / SOILTYPE \ �' v STREAM, TYP. SOILTYPE / �/ 1 \� / / — _ A — !� (�J �,/ / RIPRAP WITH A TYPE B INSTALLATION TO \ \ �Zj / / _ \ — ` 17 \ BE INSTALLED BETWEEN THE PROPOSED RR /^ >< \ \ \\ \ 17 1 — \ WING WALLS FOR INLET PROTECTION PROPOSED VDOT STD. EC-1, \\ \ \ ! / / / /� \ �� \ _ I / C'7 z J WIRE �r RR CLASS I RIPRAP WITH A TYPE v A � � � �,gm � / / ' v V `\ ' \ \ \ I \ �\ B KING / B INSTALLATION TO SERVE \ /�m / — \ \ •.' O \ LIMITS OF ( \ \ �„ / / \_ — \ v v sso.o' S vv v / / A v / / �� / / / v v v v _ . N AS OUTLET PROTECTION \ \ \ STREAM, TYP. I / / A O V \ oTecnoN sue„ /�/WPO 20190 027 LIMITS OF / A v v v v A FL000wA v — / , — A v V A (EFFECTIVE MO�E� _ _� _ RR \ \ \ A / / j A I DISTURBANCE / / �LI ITS OF TREE 11-- V A v SILT FENCE w/ WIRE \4v\ / // / / I I II I / CLEARING (TYP.) V \ \ \ \ V A 1 - - S BACKING PROPOSED A \6, // / i\ I / I V - LL 0 PROPOSED FLOW BARRIER WITH PLEASANT GREEN \ \ SOIL TYP \ �- \ \ \ \ r — — _ j Z / PROPOSED IN -STREAM RIPRAP A / \ / I \ h v A (SANDBAGS, PLYWOOD, JERSEY AT TRANSITIONS (BEGINNING USC \ PHASE I CONSTRUCTION \ \ / / - / I I / / I I T E ) /� 37D3 \ \-f' S ,v/ WIRE\ \ \ J W _ BARRIERS, OR EQUIVALENT) & ENDING) OF UTILITY STREAM I l I AV A _ _ _ j // / / �� I / I / / / I I �ROTCT� / / A V / I V CROSSING DIVERSION � �- BAiSKING \ 1 \ / \� A ���IM M� /—/ /� // // / / / / I� �I I �/ \V- A\ \/ I� • \ PROPOSED ALIGNMENT IL \i Lu w �' ♦ � STREAM DIVERSION WHILE ' — — — _ _ � � °I / / / / I I I •'. 1 `V CULVERT IS INSTALLED. DETAILS / I /o / I / I / / V ` 1 v ♦ — / / / / / vim/ `� A �I ♦� I I ♦ I A & NOTES ON THISHEET. -- ��XyC -1 WOO 201900603 — AA V A \ I 4�� •�f�C�C / ' y / M� I _ \ r m � AMENDMENT #1 LIMITS / / O vv �`VA A V ♦ �f ♦ I I I � �V v TREE Tp i / �° / / OF ISTURBANCE / �i l H� p� \ \ \ \ \ \ ♦ PROTECTION 100-YR FLOODPLAIN C \I _ Q \ \ \ \\\ \\ \ ` \ \ \ \ `♦ ♦ �\ \ ` �,� SOILTYPE (EFFECTIVE MODEL) \y \ \ / / / / / - i / I j i / ' / / — _ — ` — \ \ I I ! v OZ'—/\ \ _ 7 \ \ \ \ \ \ \ UTILITY STREAM DIVERSION NOTE: 4v I / D \ / i cI� / / / \ L \ \\ / ♦ -- —3713 ----- —69z— - / \ \ / CONTRACTOR SHALL REMOVE PROPOSED MG / — — — — / / SILT F NCj w/ WIRE / I I T / / \ I \ \\ �� \ / ♦ �` _ , FLOW BARRIER &STREAM DIVERSION ONLY / ' _ — — — — _ — _ — STa / / SF BACKI G P)i0P65EDo I - I I I I / I ' / / / SOIL TYPE D \ \ �( • �j O AFTER THE TRIPLE BOX CULVERT - _ _ — WITH P EAS{'INTGREEN / / I / � / �58 / /� % INSTALLATION HAS BEEN COMPLETED, AND , ' " _ �— — — — �� _ _ _ PHASE IICONSTRUCTION / / / / / / / �- \ ! • C7 Y V / \ \ \ , ♦ `` \ \ THE ESC INSPECTOR GRANTS APPROVAL. I / — -- - - -, ► I - / -jC-C-9C-3(-CLLI \ w O \ \ \ - / r C J-;c ZD \\ \ \ \\ \ \\ \\ \\ ♦�� I / / /1 / / // / —/ / I I / I l w/wI \ ♦ ACKI � 'Y �Q � W �1 i I� �// // ( / �� I / / / k / / k ( — — — � \ v v v � v v V v A v v _ — — — — v A • � , / / AREA T BE CUT AND EC D J'� I — w/ IRE / ♦ y7 j / / l AS FILL FOR THE CONNECTOR Z ! — 4P PROTECTION V // / ' / I / / - H I BA IN /� ♦ v — // / / / / ROAD CONSTRUCTION. L u PROPOSED LIMITS OF DISTURBAN E EXPANSION - i / — — / A _ _ q NE / / // i ' S / / / l l // ASSOCIATED WITH THIS PLAN. TOTAL AREA=1.99 ac. ! / \ \ / / / / /// \ / / / / / // 1 BE REMOVE (n EXISTING STRUCTURES AND / LL.I 1 / off //// / i / �� i/ �,. U) PH PHASE I T1 6 / DRIVEIA�AY1 0 } LU O WBAREA=O1,9 ac/ / p A W LOCATION OF PORTA-POTTIES W / ///// / / / / / I 4 J/�� ' LOCATION OF FUELING AREA oR�y , // / / / / I �' \ / PROP ED Li1'x QQ / / LL.I SOILBOUNDARY LINE (TYP.)/// / / �� 'T \ CIP / LOCATION OF 15cy DUMPSTER M�RDQ / / I� \ / CONC. WA UT ARi! PROPOSED CONC. WASHOUT AREA S�-Ta'PE' i y� I I PROPOSEb CL. Al 17RAP OUTOALL '- 3 _ ��T / / I Xj \ \ / / 7 L (W1=3', W2�=T, L=6', D=2')—— /\OPOSED ,I CE PROPOS612'x7O' MINIMU AVEM� D v mow/ _ _ (;Rq 20 ay \ / / / / / CD / ) L.L.. — — — — _ � CONTRACTOR - CONSTRUCTION E NC ITH WASHRACK. /i � � /H '�\ \��'� � O � O `/�, _ PROPOSED TEMPORARY CULVERT / o — ',„� / TIS - /3 ® N ,^ /STAGING AREA ' INV. IN=705.0, INV. OUT=7o04.0 / / r / / \ \ \ \ N,a�$Q I \ / V / 12" CAP, L=16', 5=6.25 /o /\( C -- / Lu EXISTING FIRE HYDRANT \ �1 / EXISTING FIRE HYDRANT y0 o— — v /m / GRAPHIC 7l Al / / // / \ \ \ \' ' / ' / ' \ \' /PROPOSED CONSTRUCTION MINIMUM W I \ <<pFF JOB NO. i I I �brN PAVED CONSTRUCTION CE o zo ao ao \ .(go � � / \ � ENTRANCE WITH WASHRACK. 112066 \ ' ' I ' \ F \ SCALE IL / / --- 111=40' IN FEET) SHEET NO. 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