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HomeMy WebLinkAboutFDP201900006 Application 2021-03-29GENERAL NOTES OWNER: STANLEY MARTIN COMPANIES LLC 11710 PLAZA AMERICA DRIVE, SUITE 1100 RESTON, WRGINIA 20190 DEVELOPER., STANLEY MAR7N HOMES 404 PEOPLE PLACE, SUI7F 303 CHARLOTTESVILLE, VA 22911 ENGINEER. COLLINS ENGINEERING 200 GARRETT ST, SUITE K CHARLOTTESWLLE, 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 INFORMATION AND TOPOGRAPHY WERE PROVIDED BY ROUDABUSH, GALE AND ASSOCIATES IN ✓ANUARY OF 2019. INFORMATION 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 THE ALBEMARLE COUNTY WATER PROTECTION ORDINANCE FLOODPLAIN: A PORTION OF THE PROPERTY IS LOCATED WITHIN A FLOODPLAIN ZONE AS SHOWN ON FEMA MAP1151003CO229D, DATED FEBRUARY 4, 2005. FLOODPLAIN NARRATIVE This amendment to the FEMA 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 with the 2018 CLORM-F was for a road crossing approximately 1,896 feet downstream of Cling Lane. This crossing was approved but not installed. The property that was utilizing the crossing has been added to the adjacent property downstream of this crossing, and anew 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 2,856 feet downstream of Cling Lane along PoweN'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 Panel0229, effective date 214105. The datum for the FEMA study is NA VD 1988. The approved CLOMR and HEC-RAS modeling from 2017 determined that the existing GIS topography along Powell'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 approximately960 feet downstream. As part of the approval of Special use permit (SP2019-00002) 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, floodplain 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 of 2.59 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; therefore, there is a zero -rise in the BFE associated with the proposed fill and crossing on the adjacent properties. There area total of (5) properties effected by the rise of the BFE, which are TMP 56A1-01-26, 56A1-05-A, 56A1-01-30A, 56-7, and 56-115. In addition, the new location for the road crossing has been permitted through the USACOE. FLOODPLAIN STUDY FOR POWELLS CREEK IN THE PLEASANT GREEN SUBDIVISION (FDP201900006 -PLEASANT GREEN) TMP 56-115, 56A1-01-26,56A1-05-A, 56-7, 55C-03-A, & 56A1-01-30A WHITEHALL DISTRICT ALBEMARLE COUNTY, VIRGINIA SHEET LAYOUT SCALE: 1" = 160' VICINITY MAP J+ SCALE: 1" = 2000�' LAUREL HILLS c OSS' GRAYROCK�At. WAYLAND.`. WAYLAND PARK GRANT j -r- ~tart Hill Bteu 6" �J Crozet 2� REA PARKSIDE if— VILLAGE Old Trail Golf Club 9 ,m PARK VIEW .311 CZ0Z117 M111541 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 47 SCOTT/R. CtbLLINS'Z Lic. No. 035791,E A 03/29/21 w4i Z O LL �u) U z w O O�2: y U z "'� 0 0 U Z O a w a CO � W w D H 6 TOTAL NUMBER OF SHEETS CA Q M ® M ROADS LEGEND 0') (/) 4 0 EXISTING CULVERT J EARTH DITCH CY M 7 L O CULVERT DROP INLET & S7RUC7URE NO. DRIVEWAY CULVERT 0 e BENCH MARK CVO Q CURB CLEARING LIMITS J a CURB & GUTTER - - - - - N PROPOSED PAVEMENT W N Q EC-3A DITCH 100 EXIS77NG CONTOUR PROPOSED CONTOUR Q > O DEPTH OF EC-3A DITCH 200 WOT STANDARD STOP SIGN LU O EC-2 DITCH 240.55 PROPOSED SPOT ELEVA77ON J J 6" DEPTH OF EC-2 DITCH LU w Un o z O W Z J u" Q �1 /4 V / > W WU Y ~ C) O LU ED V ZD Ul CO V I— LULU z w w CO ��n''� (rV w LU Q z (D Q 0CD CD LU a— U JOB NO. 112066 SCALE 1" =200� SHEET NO. 1 Ll C:J ❑ U / ❑ / / / / / / SM CHARLOT ET SVILLE, LLC // / � / � � / / ❑ -�\ / / TM DB 522 oPG 3og 4y; / 1 u / / / ❑ \ /�� / / / . \ p86C CSD 4� L O < ❑ TMPo oAv-ov nbAo CHARL TOTO TESVI�LE, LLC � � � `�� ° o bILVEA, a 3 1 C /�X$\� MP 456Ai'oi' 0299O 1 i — I= O D 436.PG10 O DB 5i�PG 399- J� m � 2 ❑ .x- - — ^' C ITZER, DARNELL P OSbAx-ov ooaB o0 DB WB26;c n 0 t PI KEY IOS TM SAF / 0 � �/ 1 G / / / / / / / \ \ \ J ( ❑ �V � \\ DB A �o co 1v43, Pax 4 O / // �❑ / O __L—-��_..... �O__ — \ J / \ \ \ ` / / �/ ":�`."-M.`... z....;.,. t...,y" B MP MESLOR DELO�ROE51 TBxgE., PG,, GI FEMA FLOO KLAIN /�/* aA-b oo Yu�` J �— OT v S GEL4 / I \`\/' ' =a44ac BABER, JAM L RE51 AFFECTIVE MODEL)DB2P3,PGx M o_o3,eo / B22xo - af/ A �� / / xc B \ ❑ / / // // r 1� // �� J--) Ei4f? FEMA-FLOCSD W// \ / _ �i ��/ � � \ BABER,PIAMESLOROELORE51 00 _-- TM o56Ai o¢ 00 o3xB0 (EFFECTIVEMODEL) De2eoacas 30 ER MARKi#2 �/ — MD 2 ELEV. 76�49 S�zN 1 / SM�1-Il�tLOTTIIESV��LL ❑ _ / �- / ti \ _ / / 28 a TMP 056�-b 00-o26do / / / / zPG 309 ❑ `� 4 4ac �� VUE R AL ARTNERS LLC \/ ❑ / // / i� c / \ � / C \ � _ \ — Dd_5226,,Y� 3� /J — TMP oS o-00-00-11500 \ / / L \ 854 ac. ��V\ R PARTN€R CL --TM -o5 oboaa-oo-on-10� \ _ / ❑ / ��.2r8S4ar VAV�G6 SM CHARLOTTES V TMP o56A1 -o500 -/L D]B�-0L005,C5� C r� 4.24 DB 5226, PIG 309 T _ \ o i J — =� ❑ \ — �/ !/ FEMA FLOODWAY— \ L �� i \\ \ y❑ �� (EFFECTIVE MODEL) f — F - i,- 00 GI La -YEAR F MA FLOOD LAI y�YEAR FEMA FLOODPLAIN f� —� /4 ® (EFFECTI E MODEL)I]j u (EFFECTIVE MODEL) XIS I G CON R E D O O J �\ ` ( �/ �. SUBJ C PROPER B NDA \\ O S CH TMP o56AT 15 oI o oL p❑ B 2 G ❑ ❑ o L //� 6TT_00-0osv-00 0f O 30 PARCEL ID TAX PARCEL NUMBER OWNER Zoning Use C A 055CO-00-OC-02400 Joshua Pugh R-2Zoning Residential B 055CO-00-OC-02300 Cynthia Neilsdttr R-2Zoning Residential C 055CO-00-OC-02200 Carlton & Patricia Huff R-2 Zoning Residential D 055CO-00-OC-02100 RobertScottor Erin Lynch R-2Zoning Residential E 055CO-00-OC-02000 BarbaraCornejo R-2Zoning Residential F 055CO-00-OC-01900 Courtney5talnaker R-2Zoning Residential G 055CO-00-OC-01800 Kenneth Varner R-2Zoning Residential H 055CO-00-OC-01700 Helen Jones R-2Zoning Residential 055CO-00-OC-01600 Anthony Wells R-2Zoning Residential- 1 055CO-OD-OC-01500 Robert or Sharon Shifflett R-2Zoning Residential K 055CO-00-OC-01400 Larry or Henrietta Olson R-2 Zoning Residential L 055CO-00-OC-01300 Michael or Robin Walton R-2Zoning Residential M 055CO-00-OC-01200 Tony Lee or Lila Kaye Shifflett R-2 Zoning Residential N 055CO-00-OC-01100 Jackie or Ausin Jamison R-2Zoning Residential O 055CO-00-OC-01000 Glenys M Dix R-2 Zoning Residential P 055CO-00-OC-00900 Jason or Megan Shifflett R-2 Zoning Residential Q 055CO-00-OC-00800 Julie Rae Gibson R-2Zoning Residential R 055CO-00-OC-020700 William or Nellie Huppert R-2Zoning Residential S 055CO-00-OC-00600 Mitchell or Miranda Fitzgerald R-2Zoning Residential T 055CO-00-OC-00500 Jeff reyorFabienneSwanson R-2Zoning Residential U 055CO-00-OC-00400 Michael A Malone R-2Zoning Residential V 055CO-00-OC-00300 Brenda McDaniel R-2Zoning Residential W 055CO-00-OC-00200 Gordon & Madeline Campbell R-2Zoning Residential X 055CO-00-OC-00100 Gordon & Madeline Campbell R-2Zoning Residential u ❑ �� TOPCH SAN. MH O ❑ ❑ E .=688.44' -/ O ❑ C_-j ❑ LEGEND ❑ � ❑ \ / ❑ too -YEAR FLOODPLAIN i FLOODWAY ���JJJ OO WETLANDS EXISTING POWELL' S CREEK STREAM FLOODWAY (EFFECTIVE MODEL) A H ALE _ — too -YEAR FLOODPLAIN (EFFECTIVE MODEL) 100 0 1 200 O 3 _ Soo-YR FLOODPLAIN (EFFECTIVE MODEL) SUBJECT PROPERTY BOUNDARY FE ) meh = 10 ft. REVISED too -YEAR FLOODPLAIN iCOTT/R. CD•LLINS'Z Lic. No. 035791 � 03/29/21 ��Q1 z LL 0 UZ U U) In U O ~ U tL Z w z U Uu O0 Q k Lu W a CO cl 11J CO W W J , Lu W ce-j Q F N 001 0 N M L9 >— rn M C17 ZD ® Ch N M z W N rn Q J N LJJ w p L I LL] > U 1 O LU o Q III 01�I--I —i = C) U I�-I > O Y ,—I O � CO LL ::D > UlD U) U') F-: LU z U LL, I" I" I LL F- LU LL cj. L u J Q z — V LU J H U w w JOB NO. 112066 SCALE 111 = 1001 SHEET NO. 2 RAMBLING BROOK LANE CENTER LINE DATA: - - -\\ L \% i i / l / / / / CAMPBELL, GORDO / // / l / VUE REALTY P4K1 NERS LLC / / ! °\ Tangent Data \ \ \ \ \ & MADELINE fy i i // / / // // / / / TMP o56QO-oo-oo- oo / / / / l RESIDUE LAND FROM \\ 1 00 'TH 0 \ TMP o Co-oo-oC/021 0 ' T / / / // \ / 4i.854 a / I \ PLEASANT GREEN PHASE I SUBDIVISION \ \ \ \ \ \ \ \ \ Fhf Description PT Station Northing Eastmg \ \ \ \ / 55 i/ � �' / / / r \ I\ \ o.3go a / / / / 82 TO BE COMBINED WITH Start: 10+00.000 3913311.780 11422959.805 / \ f / / i y i / / 4 5 / \ \ DB 416 P�f z / / / / 40 / / TMP oS6Ai-01-00-02600 End: 11+55387 3913411.704 11423078.803 \ i /�/i / / / ♦ �XISTING STREAM�TYP. `SCOTT R. LINSZ Tangent Data \ \� / / % / / i j / / / i / / / �c \ \ / - _G I ! \ - 1 \ \ \ \ O -. Parameter Value Parameter Value / l / / \\ \ \ \ \ \\� Lic. No. 035791 n Len 155387 Course: N 490 58' 45.5333" E a 03/29/21 �4 ♦ I / r� / ) / \ \ \ \ \ \ \ \ 9 NA w Curve Point Data J -/// \/�/\// / /�� /// ♦ I \ \ \ �S I0 LEG w Description Station Northing Emdag JORDAN, ROSE M _ - / / ♦ ' \ / / / \ 11 \ \\ \ \ \ PC: 11+55.387 3913411.704 11423078.803 TMP o Co-oo-oA-oo 00 \ / �� / / // / / / / FLOODWAY \ \ \ \ \ w RP: 3914560.422 11422114.206 5 o.52o ac. 4 _tg/ 7 " CylAi 17 ILLE LLC / I (EFFECTIVE MODEL), \ \ \ o \\ \ \ \ \ PCC: 13+70.121 3913561.071 11423232.821 DB 4037, PG 683. \ / TMP 6g5C6,6-oq,6007h Circular Curve Data Parameter Value Parameter value \\I \ / //dU$i'z� �, G67j / ��/�` loo-YEARFLOODPLAIN J 11 \ 1 \\ I \ \ 1 I o Delta: 080 12' 08.0848" Type: LEFT�// \ 1 (EFFECTIVE MODEL) / / /TMP 5 -03-A= Radius: 1500.000 �_ A (� I I PRPPERTeLIMITS �� Length: 214.734 Tangent: 107.551 / ❑ \ j / I I I / / // / Mid -Ord: 3.841 External: 3.851 Chord: 214.551 Course: N 450 52' 41.4909" E CuryWITH {LASS I RI Point Data \ I ioo-YEAR FLOODPLAIN I / PROPOSED VDOT StD_�EC'' P i I / \ \ Description Station Northing Easting (REVISED MODEL) / F PCC: 13+70.121 3913561.071 11423232.821 z0 p t RP: 3914060.747 11422673.513 \ \ \ \ \ \ \ \ I , /l 1 / \ ' \ / I Q O PT: 14+65.165 3913635J67 11423291.488 I \ \\ 1 1\ \ \ \ \ \ \ \ \ ; PROPOSED (3) 8'xi0` I ( \ 1 \ \ \ I \ \ \\ N o I O Circular Curve Data \ \ \ \ \ \ \ BOX CULVERTS. \ 1 S 1 O � Parameter Value Parameter value / A o \\\\ A A \ V A\ 1 \ 694 A w o o O m Delta: 070 15' 38.9702" LEFT / \ \ \ \ \ \ \ \\ \ 5gz \ \\ 15+ N r H p k w o Type: LOUNSBURY KEVIN G Radius: 750.000 OR ANN A \ �' . \ \ \ \ \ 15+q0 1 I > p Length: 95.044 Tangent: 47.586 TMP 055Co-oo-oA-00200 - I \ \ \ \ ry (\ ti ' \ o o N o / LU o Mid -Ord: 1.505 External: 1.508 0.56o ac. - \ C12 700 \ O U > j -DB 989, PG 389 Chord: 94.980 Course: N 380 08' 47.9633" E \ + Tangent Data z 00 �° \ l' i +50 Description FT Station Northing Easting / J_ � 1+90 v- 3 zi+So iz+oo i5oo'R 1 +50 C7, + J f I l l z / c - / o Stag: 14+65.165 3913635.767 11423291.488 � \ � �x � g �°� l / I -+/I�� I I / Ja, � / Ir End: 15+79.077 3913729.626 11423356.035 Tangent Data Parameter Value Parameter Value700 / r \' ` \ o\ I/ / / / / '. Length: 113-912 Course: N 340 30' 58-4782" E LUDWIG, DALE & CHRIS ANNE / Jo° \ TMP 055Co-oo-oA-ooioo6e4U V 0.60o ac. DB5z32,PIG 76o \ w oW CD o o CD N E ioo-YEAR FLOODPLAIN (EFFECTIVE MODEL) I \\ r PROPOSED VDOT STD. EC-i / m / \ \ o WITH CLASS IRIPRAP L / \ THE HOUSING LAB LLC \\ \ \ QO�/ �c �90 ��* / \ / //- // ♦ / / / \\ \� �x I �� TMP o55oo-oo-oo-o68Do \ \ \ _ / / / / \ - / /l ! 1 / / \ \ o.67o ac. \ �LQ / \ / / I �/ \ / \ . \ ° I \ I I I I I 0 \vim / I / i \ �" \\ / 1 L; \ D6 5079, PG 303 o 1 I ✓ / / / / /� \ / I / CM Z o cj FLOODWAY \ioo-YEAR FLOODPLAIN \ - * M MODEL) \ (REVISED MODEL) \ \ / / / 1 +� N/ N L1J o �.� p J / \\ / \ \\ / / o / / CA 171 \ a. THE HOUSING LAB LLC O / / / / \\ , \\ \r - \ / > O w TMPo oo-oo-0o-o68Co � \ \ q\`\ \ Wx w 0.53o ac. DB 5079, PG 303 vvI �> I A: 15+00.00 PVI ELEV:7o6.22 / / \ N 715 K: 215.32 715 \ Al \ s SANITARY S$WER PROPOSED JI\TH PLIEA$ANT GREEN -PHASE I FINAL SITE PLIIA I \\ HALLOCK, SYLVIA M & ROSAJIMENEZ-VAZQUEZ TMP oSSoo-oo-oo-o6813o \ \ o \ \ \ \ \ \ I I \ 0.400 ac. DB 4321, PG 364 p RDP SED CON N TO ISTING \ \ \ \ \ \ \ \ \ \ \ S / / 5 ME LK AL A GAP ROAD\ S,M CHAX \ \ TMP 05bRO-00-09-00700 \ \ \ \ \ \ \ t \\\ \ \ \DB5112XPG348\\ \ \\ \ 1 \\ / -/ GPXPHIC SCALE / PVI TA: 2+47.50 0.00 PVI ELE : 700.58 O N L0 O O o O r`K:8.7o 0 N oLVC:3 , o a° It � >°710 710 LOW PT. ST: iz+37.90 + + m m W%\ N Lij m N Lll W Z. 0 U 705 _�L-2.OnV.\ m PROPOSED GRADE (TYP.) w % 705 1 2,2 PROPOSED 7N77\ 70o VDOT STD. CD-s \\ PROPOSED TIE -INTO ALSTON STREET WITH PLEASANT GREEN ROUNDABOUT, PROPOSED PHASE I FINAL SITE PLAN 700 TIE-IN TO EXISTING ORCHARD DRIVE VDOT STD. CD-2 STA. 15+07, ELEV.=6.35 7o0 0 0 STA. io+io, ELEV.=70� 3A 0 0 0 0 0 0 0 0 0 0 0 0 o 0 0 \ 0 0 0 0 0 0 oY FLO 0 0 0 0 0 AIN 0 0 0 0 0 0 695 FI L (T P. i 0 L I 695 A BIN B LA C/ Ai + o AMBLING BRCOK LANE C/L S A 15+79 EXISTING ORC ARD DRIVE STREET C/L S ALSTON A 16+42 \ 690 J LIP PROPOSED (3) 8'(H)xio'(W) BOX CULVERTS Ann EXISTING GRADE (TYP.) IL 685 685 M Ln M n Ln rl M N Ln M 00 lD L!) Ln O tD 0) M N 00 Ln 'i It N S '? LD rl LD 0) Ln H M N N O LD N Lf1 N N Ln O Ln r\ O O 00 O Dl M O O a) N Dl O 00 N D1 O 00 N O of N N O 0) M M 0)O O 't .t O 0) Ln L!t O 01 LD p O^ r` r` r\ r\ LD r\ to r, lD r, lD r' LD r, LO r` ID r\ to r\ lD r., tD n W J J z U_ ao 0 LU `o LU z Q o r o O Q c Q (%� � ~� � 0 0 m Y z 0 Q Ln E 0 Ul U) U z W Z W z C C Q t w w z " z 0/ w w w 1­ LU N n j ` u~ ^/ Li J o J w V Ln T o VERTICAL GRAPHIC SCALE J Q z a 0 s o z.s s ,o zo UI <�, O 0 ACV U X N ( IN FEET ) 1 inch = 5 ft.LU m J HORIZONTAL GRAPHIC SCALE 50 0 25 50 100 200 U 0 w 0 d Lu w m o ( IN FEET )� 0 JOB NO. 1 inch = 50 ft. o //- ) zo <o / ao / eo/ io+oo io+So ii+oo 21+50 12+00 s2+5o i3+oo 13+50 14+00 14+5o i5+oo i5+5o i6+oo 112066 o SCALE RAMBLING BROOK LANE DESIGN SPEED: 25MPH AS SHOWN n (_IN- FEET ) / POSTED SPEED: 25MPH SHEET NO. - / \ / •, \ \ /inch = 40 i / 4 F SOILTYPE — — — — 36D'— PROPOSED STOCKPILE- — SURROUNDED BY SILT FENCE / / I ' \ \ / \ DD PROPOSED WITH PLEASANT PROPOSED 18" DIVERSION PROPOSED WITH PLEASANT — — i — / �i / \ \ \ \/ / C STRUCT19N' DC GREEN PHASE I CONSTRUCTION GREEN PHASE I PS EXISTING FENCETO BE REMOVED 1 \ / /✓ , / / I / I / / WITH PLEASANT GREEN PHASE I \ \ \ CONSTRUCTION X / X T WIDE VDOT CL. Al, EC-1 STONE OUTLET / PROTECTION PROPOSED WITH PLEASANT y / / X GREEN PHASE I CONSTRUCTION / I SAFETY FENCE &SIGNS / SAF "WARNING QUICK SAND, KEEP SOI 1JYPE / GREENPHASE PROPOSED ITH PLEASANT I CONSTRUCTION /SOIL BOUNDARY LINE (TYP.) / / PROPOSED BAFFLES Bi 3.25 DIVERSION CHANNEL CROSSING ACCEPTABLE LININGS (CROSS SECTION A —A OF PLATE 3.25-1) SLT FENCE POST POST SILT FENCE TYPE A DIVERSION POLYETHYLENE (6 NIL MIN.) oR GRASS LINER STREAM FLOW DIVERSION EMBANKMENT TO BE EXISTING UNDISTURBED EARTH, OR NON -ERODIBLE, WATERTIGHT MATERIAL SF TRIPLE BOX SF CULVERT EX. GROUND �¢ DIVERTED STREAM CHANNEL WITH TYPE C LINING (SEE DETAIL (LOOKING SOUTH) 3.25-2 THIS SHEET) N.T.S. STREAM DIVERSION DURING CULVERT INSTALLATION DETAILS SCOTT/R. (71 L S v Lic. No. 035791,E 12/02/20 EXISTING GROUND " EXISTING GROUND TRIPLE CULVERT INSTALLATION NOTES: 1. CONTRACTOR SHALL INSTALL AND MAINTAIN A STREAM FLOW DIVERSION PER DIVERSION CHANNEL CROSSING VESCH DETAIL 3.25-1 AND 3.25-2 DURING ENTIRE TRIPLE CULVERT CONSTRUCTION OPERATION. 2. SILT FENCE SHALL BE INSTALLED ON BOTH SIDES OF THE PROPOSED STREAM DIVERSION CHANNEL. THE CONTRACTOR SHALL TYPE B DIVERSION INSTALL AND ADJUST SILT FENCE AS NECESSARY TO PREVENT SOIL FROM ENTERING THE STREAM. STREAM DIVERSION TO BE A TRAPEZOIDAL DITCH WITH 2:1 SIDE SLOPES, A 5.5' DEPTH AND A LRIPiA&PTER CLOT 6' WIDE CHANNEL BOTTOM. RIPRAP SHALL BE PROVIDED WITHIN THE EXISTING STREAM BED AT THE TRANSITION FROM THE LI_ N EXISTING STREAMBED TO THE PROPOSED DIVERSION CHANNEL,II EXISTING GR VND �' EXISTING GROUND AND AT THE TRANSITION BACK FROM THE DIVERSION CHANNEL TO f THE EXISTING STREAMBED. AN APPROVED FLOW BARRIER O (SANDBAGS, PLYWOOD, JERSEY BARRIER, OR EQUIVALENT) SHALL U BE INSTALLED BEHIND THE RIPRAP TRANSITION. THE DIVERSION z DC SHALL BE A TYPE C DIVERSION (i.e. IT SHALL HAVE A ROCK OR O 0 Z SANDBAG LINER). O 3. THE DIVERSION CHANNEL CROSSING MUST BE OPERATIONAL � TYPE C DIVERSION BEFORE WORK IS PERFORMED IN THE STREAM (CONSTRUCTION OF U Lu I.L. DIVERSION SHALL BE PERFORMED "IN THE DRY"). N w O 4. UPON COMPLETION OF THE TRIPLE BOX CULVERT CONSTRUCTION, p F- RIPR/J FlLTCR cLDrH AND WITH ESC AND VDOT INSPECTORS' APPROVALS, THE R� z J ROCK OR SMMEAG UNEA CONTRACTOR SHALL REMOVE THE STREAM DIVERSION AND ALLOW X1 O Iz RO STREAM FLOW TO RESUME THROUGH THE EXISTING CHANNEL & LA TRIPLE BOX CULVERT. > > ExlsnNc caouwD ?'T v EXISTING GROUND 5. ONCE THE STREAM RETURNS TO ITS NATURAL ALIGNMENT AND D ,� \ _ PASSES THROUGH THE TRIPLE BOX CULVERT, THE CONTRACTOR U) PROPOSED lA" DIVERSION \ / / / / / / SEDIMENT BASIN \ \ ; , FLOW BARRIER \ SHALL REMOVE THE TYPE C DIVERSION (RIPRAP OR SANDBAGS), /y Q m DD PROPOSED WITH PLEASANT / \ i PROPOSED WITH i <RPRAP• s^"oe"Gs, fr ► ANY SEDIMENT LADEN MATERIAL LOCATED WITHIN THE TEMPORARY i� F c > / I _ PLYWOOD. JERSEY GREEN PHASE I COJVST UCTION /'- / WPO 201900003 WPO 201900003 BARRIERS OR SHEET TP°��NG DIVERSION AND THE TEMPORARY DIVERSION's EMBANKMENT z o - PILING) OPERATION (INCLUSIVE OF A NON -ERODIBLE, WATERTIGHT MATERIAL IF AMENDMENT #1 LIMITS AME�MENT #1 FORMER LOCATION PLACE RIPRAP • 6' MININLIH OR WIDTH OF EXISTING STREAM WHICHEVER IS LESS APPLICABLE). THE CONTRACTOR SHALL REPLACE THE TEMPORARY OF DISTURBANCE — — OF FLOW GAMER AT TRANSITION •• ENTRENCH SILL FENCE AND FILLER CLOTH IN SAME TRENCH DIVERSION WITH COMPACTED STRUCTURAL FILL PRIOR TO SILT F NCE w/ WIRE ? INSTALLING THE ROAD's EMBANKMENT. a �c "'r __ _ �`� _ PERSPECTIVE VIEW SILT FENCE w/ WIRE'PILEgSANT GREEN `� M ♦ ♦ ♦ r (/ / \ \ BACKING PROPOSED / PHASE I CO STRUCTION�/P ` Source: Va. DI Source: Adapted from VDOT Standard Sheets Plate 3.25-2 E WITH PLEASANT GREEN / / / \ / VHASE I CONSTRUCTION SF' / F`-k I SOILTYPE / / / ♦ _ PI3t8 3.Z5-I %\ /X)t_ EXISTING FENCE ( X---> 1F--)E--)X-H TO BE REMOVED 'F w/ WIR +`-� O ( ) ( ) o CONTRACTOR SHALL INSTALL THE 3 8' H x10' W CONCRETE BOX CULVERTS PROPOSED WITH THE CONNECTOR ROAD PLAN 1 / �/ a J \/ � AFTER THE DIVERSION CHANNEL HAS BEEN INSTALLED AND IS / / �� \ / � 41 ROTE OPERATIONAL. AFTER THE PROPOSED CULVERTS, WING PR POSED WITH \ / \ -.I WALLS, AND CULVERT RIPRAP HAVE BEEN INSTALLED AND o 100, WPO / / PLEASANT GREEN PHASE I I i / -� �I THE ESC INSPECTOR HAS GIVEN APPROVAL, THE DIVERSION / / / �/ — — / BUFFER, TYP. / CHANNEL CAN BE REMOVED AND NORMAL FLOW CONDITIONS /cw -O CONSTRUCTION I m %/ I / CAN RESUME THROUGH THE PROPOSED BOX CULVERTS. \ / _ — / w C) — % LIMITS OF tREE ( I I I ,I. r I PHASE II GRADING OPERATIONS FOR THE CONNECTOR ROAD EXIS NG 100-YR FLOODPLAIN PER / o \ • BLEARING ASSOCIATED LIMITS OF TREE I I SHALL NOT BEGIN UNTIL THE PERIMETER ESC MEASURES AND HEC- ANALYSIS PERFORMED BY o \ \ TH WPO 201900003 I \ CLEARING (TYP.) / PROPOSED WING WALL I I THE PROPOSED BOX CULVERTS HAVE BEEN INSTALLED. COLLINS ENO�INEERING IN APRIL 2019, TYP. % \ \ NDIQENi.1 ♦ \ \ / I // r' r ♦ PROPOSED TRIPLE I ` W/ WIRE RAW \ r \ / • / 1 BOX CULVERT I I I ACKING � / _ / loci-YR FLOODPLAIN /WIRE -� I PROPOSED IN -STREAM RIPRAP _ — — — — — > I'W / (3) 8'(W)x10'(H) I / / / / / y \ _ — (EFFECTIVE MODEL) /BACKING I CONCRETE BOXY / I RR AT TRANSITIONS (BEGINNING �- _- — I CULVERTS & ENDING) OF UTILITY STREAM— / _ — — ♦ /� / �'.y�-' CROSSING DIVERSION / / X — — — — j� 6r — 684.0 v FLOODWAY /�� — — o (EF00 FECTIVE MODEL �� \ m PROPOSED VDOT STOPROPOSED BC-DWING l, CLASS IALL U \g `a \ \ / / \ \ C� L LI ITS OF� / SOILTYPE \ �°'�� vv�� vSTRAM, TYP. SOILTYPE // �/ \� / ///�/'\�� I I Ian 0') V / _ o RIPRAP WITH A TYPE B INSTALLATION TO \ \ / / — — — ` \ / \ 17 \ BE INSTALLED BETWEEN THE PROPOSED RR / \\ \ \ >.7 I ' \ / — \ \ \ / a' n v / w V A / / �- x / / / / — — �� V A , ) '4 n WING WALLS FOR INLET PROTECTION / PROPOSED VDOT STD. EC-1, AA V A / // A V / `ti / / — — v V A A v = M > WIRE / RR CLASS I RIPRAP WITH A TYPE v V A A / / / V �'� / / / v V A \ I o \ BACKING / B INSTALLATION TO SERVE V A LIMITS OF y ( \ V A / v \ ,� / / x_ A A O o \ \ �/ / 690.0' - AS OUTLET PROTECTION \ \ / / / \ I I / / �g / / \ \ _; " (V STREAM, TYP. I' I \/ / / \ \ \ \ / / / — — \ \ \ \ \ // I� \ A T TREE / (n— �OTECTION � \ \ \� / / \ \ \ \ l N o WPO 20190 027 LIMIT OF� v A F DODWAY — / / \ \ L / v (EFFECTIVE.MOIiE4 IV A\ \\\ \\\v/� \� 1 1 DISTURBANCEITS OF TREE\ \ O o v \ �v / /i / / k ` / CLEARING TYP. 1 / \V I 14 \ /` f \ \ \ 0 SILT FENCE w/ WIRE \ � � SF BACKING PROPOSED ( \ \ w O -o \ WITH PLEASANT GREEN \ ` — o PROPOSED FLO\IV BARRIER ( PLYWOOD, PROPOSETRANIN- T (BE INNING USC \ ) \ \ \ \ / /// / \ I I I I I I// / 1 I \ j SOIL TYP \ `-I- S \ \ + — w ` PHASE / I / / I TR E - 37D3 `W/ WIRE` \ \ J I SANDBAGS, PLYW OD, JERSEY + \ \ / / / / / / I I I I \ \ \ \ T _ j J BARRIERS, OR£?UIVALENT) &.ENDING) OF UTILITY STREAM \ l I �. I� \V A -- ` _ _ // I / I / I� I IROTCT� / /) A �{- BACKING \ / V A � n \ \ CROSSING DIVERSION ■ I \ / \.. \\n -_IM�►t� /�—.-- _-� / // / / / / / / I I I 1 1 I (l --\ \\ i- \ \1 a. \ Vl 'L �I I •N I \ \ PROPOSED ALIGNMENT OF --` I / I \ i w o "I r r \. .STREAM DIVERSION WHILE \ � \ T / / \ \ 1 \ m \ \ CULVERT IS INSTALLED. DETAILS ` r F- lI 11 / \ \ \ — - 7 W 3 \ - ♦ \ & NOTES ON THIS SHEET. �- / �,- \� \\ \ \ '• � � � � I I �'/ / / � WPO 201900603 / / Ts � � \ � I I \ #4� f A I �I y A v TEE I' �lii' �o} / / AMENDMENT #1 LIMITS 1 / / / /� / / A \ \ I v J o NowOF ISTURBANCE \ I I H p�j ° \ \ \\ \ \ \ \ ♦ '� C ♦ - 1.1 S \ PROTECTIONTP. 100-YR FLOODPLAIN \ \ \ \ \ \ \ ♦ ♦ \ \ i — — — — — — ` EFFECTIVE MODEL \\ \\ \ \ \\ \ \ \ \ \ , ♦ \♦ \ UTILITY STREAM DIVERSION NOTE: , X/, SOI LTD3 PE — — — \ \ — — — — — yC \ \ _ / / S o I/ / / / / I I I / / ' / \ \ I I I O \ _ �� Z n \ \\ \ \ \ \ / ♦ \�` �. CONTRACTOR SHALL REMOVE PROPOSED �` / — — i — — — 692— / / SILT F NC w/ WIRE / 'I I I I I I/ / / \ \ >( I 4 / U O m \ \\ �\ \ \ \ / , �\�♦ , I FLOW BARRIER & STREAM DIVERSION ONLY / / — _ — — — — — — — ST,�C�Y / / SF BACKI G P�OPOSEDo I I\ I I 1 // / / SOIL TYPE �I .AFTER THE TRIPLE BOX CULVERT , // / — — — - Chi WITH P -AS I GREEN / I / / / I I / 25B / / e• Lj' \ H� o INSTALLATION HAS BEEN COMPLETED, AND — �— — — _ _ PHASE IICONSTRUCTION / I/ / / _ — — \ 1 ♦ \ THE ESC INSPECTOR GRANTS APPROVAL. / / / — ' �' \ = /�CyCX / / / l l / / l / / \ \ I I w O \ \ \ \\ \ \ \ ♦ \ I ACKIN X / Ul 0 1 / 7' / k (� w \ \ ♦ � / / / cRs _ AREA T BE CUT AND US D 7 yR / % / / /' / AS FILL FOR THE CONNECTOR 1 1, w Z Z z \ \ \ \ \ \ \ \ \ \ \ \ ._ — — — _ \ \ \ \! L� ! ' / w/ IRE A PROTECTION / r / / - \ \ \\ \ \ \ \ \ \ \ \ ` — — \ \ \ \ BA IN ♦ \ \ / / " / //' I I / / ROAD CONSTRUCTION. X w// RE // / l / 5 / / / / j / EXISTING STRUCTURES AND W W PROPOSED LIMITS OF DISTURBAN E EXPANSION �/ _ ACKIN / / / / / / / ASSOCIATED WITH THIS PLAN. TOTAL AREA=1.99 ac. // / s \ \ / / // / /// 1 // // /// I BE REMOVE w (n z ' DRIVEN(AY 0 _ — \ \ \ \ \ U) ,�/ ESC PHASE I �T �l �/ o LOCATION OF PORTA-POTTIES _ W ' LOCATION OF FUELING AREA �"� R�'N / / / / � \ / PROP ED Li)'x Q' / /-'� --- � I,f,.l v SQI`BOUNDARY LINE (�) / // j / / /f \ I CIP / LOCATION OF 15cy DUMPSTER T , \ PROPOSED CONC. WASHOUT AREA / — — — _ _ \\ \ \ \ \ \ \ \ \ \ — — —_ / / / ( r PROPOSE6 CL. Al RirFRAP OU#ALL Q a o TA'PE-/ �/ / 1 ( (Wl-3, W2``-7,L�-6,DD=2') \/� / I 1 ( \ ' / \ fll m OPOSED ' CE PROPOSED 12'x70' MYNIMU AVEM� D _ — I g g e'� \ I \ / / — _ /\ \ -� `J w _-- - PfjRA J xm W„ // / �/ u \ �_ / CONTRACTOR \ CONSTRUCTION E NC ITH WASHRACK. %/ 4 M ` \ �g.� ` y O / / C) L.L.. m STAGING AREA - PROPOSED TEMPORARY CULVERT / / / \ \ �- o 115 / / (i t INV. IN=705.0, INV. 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