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HomeMy WebLinkAboutFDP201900016 Study 2020-03-30© 2020 - 30 SCALE, LLC ABBREVIATIONS SYMBOLS AC ACRE EXISTING PROPOSED ACSA ALBEMARLE COUNTY SERVICE AUTHORITY ADA AMERICANS WITH DISABILITIES ACT------- J GRASS DITCH LINING PER VESCH 3.32 ARV AIR RELEASE VALVE BF BASEMENT FLOOR 0 VDOT STD. EC-3 DITCH LINING BM BENCH MARK BW BOTTOM OF WALL (AT GROUND LEVEL) --498-- —12— CONTOUR LINE WITH ELEVATION CFS CUBIC FEET PER SECOND ,. CG-12 ADA ACCESSIBLE CURB RAMP (VDOT STANDARD) �, L-J 12 STORM SEWER STRUCTURE IDENTIFIER CL CLASS - CMP CORRUGATED METAL PIPE O5 SANITARY SEWER STRUCTURE IDENTIFIER CO SANITARY SEWER CLEANOUT BENCHMARK, TEST PIT CONC CONCRETE CY CUBIC YARDS DB/PG DEED BOOK/PAGE O MANHOLE WITH FRAME AND COVER DEQ VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY SPOT ELEVATION DIP DUCTILE IRON PIPE + 65EX + 65 DOM DOMESTIC E&S EROSION AND SEDIMENT CONTROL ADA PARKING SYMBOL EL, ELEV ELEVATION 0 WATER CROCK/METER EP, EOP EDGE OF PAVEMENT ESMT EASEMENT EW END WALL 4- FIRE HYDRANT EX EXISTING FF FIRST FLOOR o • WATER VALVE FH FIRE HYDRANT FM FORCE MAIN -- — WATERMAIN FPS FEET PER SECOND GSF GROSS SQUARE FEET SANITARY SEWER MAIN GW GUY WIRE HDPE HIGH -DENSITY POLYETHYLENE PIPE =3000= STORM SEWER HP HIGH POINT HT HEIGHT ---- PROPERTY LINE/RIGHT-OF-WAY LINE INV INVERT IRF IRON ROD FOUND --- CENTER LINE IRS IRON ROD SET L LENGTHS FENCE LINE LAT LATERAL LF LINEAR FEET ---- EASEMENT LINE LP LOW POINT LT LEFT MAX MAXIMUM MH MANHOLE MIN MINIMUM NSF NET SQUARE FEET NTS NOT TO SCALE OHE OVERHEAD ELECTRIC PC POINT OF CURVATURE PERF PERFORATED PL PROPERTY LINE PROP PROPOSED PSI POUNDS PER SQUARE INCH PT POINT OF TANGENCY PVC POINT OF VERTICAL CURVATURE PVC POLYVINYL CHLORIDE PIPE PVI POINT OF VERTICAL INTERSECTION PVT POINT OF VERTICAL TANGENCY R RADIUS R/W RIGHT-OF-WAY RCP REINFORCED CONCRETE PIPE RED REDUCER RT RIGHT RTE ROUTE RWSA RIVANNA WATER SERVICE AUTHORITY SAN SANITARY SEWER SD SIGHT DISTANCE SDR STANDARD DIMENSION RATIO STA STATION SVC SERVICE SW SIDEWALK SWM STORMWATER MANAGEMENT T TRANSFORMER TBR TO BE REMOVED TC TOP OF CURB TP TELEPHONE PEDESTAL TW TOP OF WALL UG UNDERGROUND UGE UNDERGROUND ELECTRIC UGT UNDERGROUND TELEPHONE/FIBER LINE UGU UNDERGROUND UTILITY VDOT VIRGINIA DEPARTMENT OF TRANSPORTATION VESCH VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK VSMP VIRGINIA STORMWATER MANAGEMENT PROGRAM WM WATER METER WTR WATER WV WATER VALVE JACOBS CREEK FLOOD STUDY TM P 104-14133 SCOTTSVILLE MAGISTERIAL DISTRICT ALBEMARLE COUNTY, VIRGINIA �O P 0 0 z rn N > 410' ACP 4051 JACOBS co `�' CREEK DRIVE PROPOSED BRIDGE CROSSING � s Gocoo� P JACOBS c� CREEK N VICINITY MAP SCALE: 1 "=2000' OWNER: TINA TAYLOR C/O STEVEN LOWE 4051 JACOBS CREEK DRIVE SCOTTSVILLE. VA 24590 SHEET INDEX # SHEET TITLE 1 COVER SHEET 2 SITE PLAN 3 MITIGATION PLAN 4 DRAINAGE PLAN 5 FLOODPLAIN PLAN 6 EXISTING CROSS -SECTIONS 7 PROPOSED CROSS -SECTIONS 540-325-6212 ATTN: STEVEN LOWE OWNER INFORMATION ENGINEER: CONTACT: SOURCE OF TITLE: PROPERTY INFORMATION 30 SCALE, LLC TAX MAP: SITE AREA: 871 JUSTIN DRIVE BOUNDARY SURVEY: TOPOGRAPHY: PALMYRA, VA 22963 MAGISTERIAL DISTRICT: ZONING: 434-242-2866 OVERLAY DISTRICT: EXISTING USE: ATTN: MICHAEL MYERS, PE, CFM PROPOSED USE: DISTURBED AREA = 11750 SF APPROVED by the Albemarle County Community Development Department Date 03/30/2020 File FDP201900016 Digitally signed by Frank V. Pohl, PE, CFM DN: C=US, E=fpo h I @albemarle. org, O=Albemarle County, Frank V. Pohl, PE, CFM OU=Engineering, CN="Frank V. Pohl, PE, CFM" Reason: I have reviewed this document Date: 2020.03.30 13:28:45-04'00' TINA TAYLOR C/O STEVEN LOWE 4051 JACOBS CREEK DRIVE SCOTTSVILLE, VA 24590 STEVEN LOWE DB 5101 PG 445 104-1463 32.1 ACRES ALBEMARLE COUNTY GIS OCTOBER 2019 SURVEY BY MERIDIAN PLANNING GROUP SCOTTSVILLE RURAL AREA SPECIAL FLOOD HAZARD AREA RESIDENTIAL RESIDENTIAL REVISIONS # DESCRIPTION DATE 1 MITIGATION PLAN COMMENTS 1/3/2020 2 FLOOD STUDY COMMENTS 3/29/2020 10 ,SCALE ENGINEERING owner: TINA TAYLOR C/O STEVEN LOWE 4051 JACOBS CREEK DRIVE SCOTTSVILLE, VA 24590 engineer: 30 SCALE, LLC 871 JUSTIN DRIVE PALMYRA, VA 22963 p: 434.242.2866 e: mike@30scale.com web: www.30scale.com r 1 0 Nil .L F. S Lic. No. 33028 03/30/2020 A1, � sheet title: COVER SHEET sheet # 1 oF7 scale: 111=10' date: 11/30/2019 F L7 z O U w J ac IC co J Q r n O U U0 © 2020 - 30 SCALE, LLC X 325.248 \ / l ` M4 �O \ �S Z � T �1 F \ �� Sao FS F�S'q O'I' TP / \ 'O0 ;114� X 324.89 325 X\\1 \ \ �, X 324.45\\\�X 324.80 M / x 325.524 \ \ XN\\\ \_ \ \\ \ EX. 10" CAL 15" CMP TREE (TBR INVERTS / (UPPER) \ Q \ \ OGY 1=322.05 / \ 2=321.41 / 1 \� - 321 x \ / \ \ 3=320.96 X 325.368 / — 324 — J 15" CMP \ 3 7 TB / INVERTS \ \ (LOWER)�- 1=321.38 2=320.70 _ 3=320.44 — � 21� B$— — - - \ �25 l\ X / Lx 3t C� 1 + 0 40 \\ \ 325.636 _Eo\ / FLOW �1 EX _ \ F FXT'�F EX, TWIN X 3 3.6TB \ \ \ \ \ 0 ��� /NF 12 /8 CAL. \ TREE (TBR) / J Qj \ / _�25 GAP EX. (3) CULVERTS AND \ STREAM CROSSING FILL TO \ BE REMOVED WITH THIS /,9 Ae'o �( PLAN 70, Sc \2 D� 6Q' FS0 \ / X 325.909 �( J N �� 00 EXISTING CONDITIONS PLAN 1"=10' 1992 T YPI C"A L TREATMENT- 2 FOIL STABILIZATION MA T TI.NG SLOPE INSTALLATION FILL SLOPE SECTION'-- SOIL STABILJWON WAITS SHOULD BE INSTALLED VERMCALLY 9�� �• T DOWNSLOPE FOR BEST RESULTS. 7 rlie ' 0 of 10 r A _tf• Y' 4y� TOE MAINTAIN SLOPE ANGLE SLOPE LINING (WET SLOPE} TREATMENT — 2�` POLYPROPELYENE NON--WOVEN(NEE�C GEOTT�E)MLE{ND FILE L) TER TREATMENT - 2') OF _IA SOIL �-> � BOTTOM OF FILL 3.36 &L[f_ SLOPE SURFACE SHALL BE S14400TH AND FREE OF ROCKS, LUMPS OF DST, CRASS AND STICKS. W SHALL BE PLACED FLAT ON SURFACE FOR PROPER SUIL `-CONTACT. DIRT SHALL BE TAMPERED PRIOR TO LAYING 70P LAP OVER BERM TRENCH INTO BERM AND PROGRESS DOWNSLOPE SLOPE LINING TOP OF GIFT OPE DRY SLOPE} TREATMENT - 2 BOTTOM OF CUT SLOPE BOTTOM OF CUT SLOPE BRER SHOU_LER 2' Source: VDOT Read and Bridge Standards Plate 3.36-5 VDOT STD. EC-3 DETAIL (TAKEN FROM VESCHB STD 3.36) 1992 TOE REQUIREMENT-i FOR BANK STABILIZATION FILTER CLOTH UNDERLINER (PREFERRED) GRANULAR FILTER Source: Adapted from VDOT Dras'Tia2e Manual 3.19 Plate 3.19-1 RIP -RAP BANK STABILIZATION (PLATE 3.19-1 FROM VESCHB STD 3.19) — 324 �A I �N9 /0. O� S FT p �0�f' � T�P q \ O� "0 PROVIDE SOIL \ \\ STABILIZATION BLANKETS / P \ 325 (VDOT STD EC-3 FORNEW SEE SHEET 3BFORS O� / Jw LIMITS OF \ REQUIRED BUFFER PLANTINGS o�P DISTURBANC =1,750 SF 4# - i 19, 1-1 AV P 2SUBMERGE OUTLET `�'Dv 20 DOWNSTREAM OF \� DISTURBANCE \ \ 321 f I 4T'�F F l�il,F GAP I / I CONCRETE ABUTMENT CL 1 RIP -RAP / 6X6 PRESSURE TREATED EDGE GUARDS (BOTH SIDES) SANDBAGS PUMP \ O SUCTION �0�, `°Q LINE Lob / T''o s �� F�NGE 1` NOTE: PRIOR TO BEGINNING CONSTRUCTION OF STREAM _ CROSSING, CONTRACTOR TO TEMPORARILY DIVERT UPSTREAM - 32� — FLOW BY PROVIDING SANDBAGS AND PUMP. SUCTION LINE TO DISCHARGE DOWNSTREAM OF STREAM CROSSING AS SHOWN. ALL CONSTRUCTION WORK TO BE PERFORMED IN DRY CONDITIONS. 100-YR WSE=326.99 0 10-YR WSE=326.16 0 2-YR WSE=325.36 0 o EX. GRADE NOTE: REFER TO SEPARATE PERMIT FOR BRIDGE CONSTRUCTION EL=326.0 X _ Q � — -EL- 2'1 67' LO ;I 3.0' *STABILIZE STREAM BANK WITH EC-3 FOR AREAS OUTSIDE OF BRIDGE CROSSING PROJECT NARRATIVE SITE PLAN 1"=10' 6X6 EDGE GUARDS BRIDGE DECK DECK EL=325.5 PROVIDE GRAVEL APRONS ON APPROACHES F OOti c o� 6r rso 60S �o PROVIDE SOIL ,s / o�oo P STABILIZATION BLANKETS �o� (VDOT STD EC-3 FOR 47���o��,�QoQc, NEW STREAMBANKS - vJ tiJ�� ooh SEE SHEET 7 FOR REQUIRED BUFFER / ��, 0 PLANTINGSA�x �0 W14X30 STEEL BEAM SUPPORTS 1-YR WSE=323.68 — — — BASE FLOW EL=321.5 CL 1 RIP -RAP @ 1' DEEP \L/— EX. (3) 15" CORRUGATED METAL WITH FILTER FABRIC PIPES (TO BE REMOVED) UNDERLAYMENT (SEE DETAIL)* STREAM INVERT=320.5 SECTION Z-Z N.T.S. CURRENTLY, THE ACCESS TO 4051 JACOBS CREEK DRIVE IS LIMITED DUE TO A LOW AND ERODING GRAVEL/DIRT ACCESS ROAD OVER THREE DETERIORATING CULVERTS. DURING MOST WET CONDITIONS, THE ACCESS IS IMPASSABLE. THE PROPOSAL IS TO REMOVE THE CULVERTS AND FILL, AND TO CONSTRUCT AN ALL-WEATHER BRIDGE CROSSING TO IMPROVE THE ACCESS TO THE PROPERTY. THE CONTRIBUTING DRAINAGE AREA TO THE STREAM CROSSING IS APPROXIMATELY 2.5 SQUARE MILES, WHICH IS BELOW THE 5 -MILE THRESHOLD AND THEREFORE NO ACOE PERMITTING IS REQUIRED. ALSO, THE CROSSING IS LOCATED IN THE ZONE SQUARE A FEMA FLOODPLAIN AND THE ALBEMARLE COUNTY WATER PROTECTION ORDINANCE STREAM BUFFER. WITH THE SIGNIFICANT UPSTREAM DRAINAGE AREA, THE SHALLOWNESS OF THE STREAM, AND THE CROSSING AREA BEING PRONE TO FLOODING, THE DESIGN OF THE PROPOSED BRIDGE CROSSING ELEVATES THE ACCESS APPROXIMATELY 18" ABOVE THE CURRENT GRADE, WHICH WILL PROVIDE DRY CROSSING CONDITIONS FOR THE MAJORITY OF STORM EVENTS. A MITIGATION PLAN IS ALSO REQUIRED AS PART OF THE CONSTRUCTION DUE TO THE DISTURBANCE WITHIN THE STREAM BUFFER, AND IS INCLUDED ON SHEET 3 OF THIS PLAN SET. FOLLOWING CONSTRUCTION, THE PROPOSED BRIDGE CROSSING WILL NOT BACK WATER UP ONTO ADJACENT PROPERTIES FOR THE 2, 10 OR 100-YEAR STORM EVENTS. REFER TO COMPUTATIONS ON SHEETS 6 AND 7 AND IN PROJECT COMPUTATIONS BOOKLET. 0 10 20 30 SCALE: 1 "=10' 1 PROP. GRADE (PROVIDE GRAVEL AT APPROACHES) CONCRETE ABUTMENTS - TYPICAL, BOTH SIDES -REFER TO STRUCTURAL PLANS BY OTHERS FOR CONSTRUCTION OF ABUTMENTS REVISIONS # DESCRIPTION DATE 1 MITIGATION PLAN COMMENTS 1/3/2020 2 FLOOD STUDY COMMENTS 3/29/2020 OFISCALE ENGINEERING owner: TINA TAYLOR C/O STEVEN LOWE 4051 JACOBS CREEK DRIVE SCOTTSVILLE, VA 24590 engineer: 30 SCALE, LLC 871 JUSTIN DRIVE PALMYRA, VA 22963 p: 434.242.2866 e: mike@30scale.com web: www.30scale.com a MM z W 3 z d' 0 0 0 LU J EY Q w m J � Q �T 0: �o `M l L F. S Lic. No. 33028 �� 03/30/2020 �SIONAL sheet title: SITE PLAN sheet # 2 OF scale: 1"=10' date: 11/30/201� © 2020 - 30 SCALE, LLC MITIGATION PLANTING SCHEDULE \ \ \ CANOPY TREES SAM II TOT COMMON NAME/ MIN CAL/ J� TEA \ SYM QTY BOTANICAL NAME MIN HT ROOT \ T�q 70. OX SCALE ", „ q ENGINEERING CIA 5 50URWDOD 1-1/2 - 2 B&B �,*` � \ \ � 07AOFJ OXYDENDRUM ARBOREUMy'', \ `AitS� \ BUFFER PLANTING \ � AREA=4,569 SF P owner: TA 4 RED MAPLE 1-1/21" - 21" B&B ACER RUBRUM TINA TAYLOR C/O STEVEN LOWE ,. INSERT DIBBLE AT ANGLE AND 2. REmOVE UIBRLE AND PLACE 3. INSERT INBEILE 2 INCHES \\ \ / 4051 JACOBS CREEK DRIVE PUSH FORWARD TO UP'RICH7 SEEDLING AT CORRECT DEPTH. TOWARD PLANTER FROM UNDERSTORY TREES POSITION. SCOTTSVILLE, VA 24590 \ \\ P AREA OF JBGE AND engineer: DRIVEWAYSF / 30 SCALE, LLC 10 9 AMERICAN HOLLY 4' HT B&B n \ \\\ / \5 HA �cr� / tijL� 871 JUSTIN DRIVE ILEX OPACA �; �— 3 \\\� 3(PM) ( ) / � / 5(10) \ / PALMYRA, VA 22963 2S 2(OA) 4(CC) \ p: 434.242.2866 CC 9 REDBUD 4' HT B&BPC / e: mike@30scale.com CERCIS CANADENSIS '� �\ ( ) \ web: www.30scale.com STA 0+46=BE1GIN— \ SHRUBS I i s�� I I I T�— i Ip STREAMBANK PLANTING + mac, 4- PULL HANDLE OF DIBBLE 5. PUSH HANDLE OF DIBBLE 8� INSERT DIBBLE 2 INCHES 7 PM \�\ �� \7(PC) 20— TOWARD PLg4TER FIRMING FI}RWARD MOM PLANTER FROM LAST HOLE ( � \ SOIL AT BOTTOM Of ROOTS. FIRMING SOIL AT TOP OF ( ) ��. �.\ � 7 PA �rP ( ) PM 15 BLACK CHOKEBERRY CUTTINGS ROt3T5. \ ` 7(PA) 5(PC) 5 PHOTINIA MELANOCARPA 5(CC) 5(PC) — Cb HA 14 WILD HYDRANGEA CUTTINGS — 324 — 20 3(HA) HYDRANGEAARBORESCENS lirr, A2(TA)REED zONE {'� t ``3 HA \ 05 5(PC) ;� \ PC 36 COMMON REED CLUMPS �— j�— — _ _T — ( 7 PA PHRAGMITES COMMUNIS 7. PUSH FORWARDI THEN PULL a. FILL IN LAST HOLE 9Y 9. T AROUND SEI=a�NG F-I'T�FF �\ — \ \ <co PA 28 REED CANARY GRASS CLUMPS BACKWARD FILLING HOLE. STAMPING WITH HEEL. WITH PHALARIS ARUNDINACAE 7(PC) \ DIBBLE PLANTING DETAIL 3(HA) 5(PM) \ \°`w�`r�;wP\,°° (PLATE 3.22-2 FROM VESCHB) x� J� Q \ O MITIGATION CALCULATIONS \ \ \ � J . METHODSOF ESTABLISHING � �,�?S \ \� P��SO � o� / � M z AMOUNT OF DISTURBANCE WITHIN STREAM BUFFER 1,750 SF \ \ u REED BANK VF F A TIO � � \ y �2 � � 4 \ \ 0 m REQUIRED BUFFER PLANTING (2X DISTURBED AREA) 3,500 SF \\1�y�P \ >_ PROPOSED BUFFER PLANTING AREA 4,569 SF / 'p, — \ O LESS STREAM CROSSING (BRIDGE/DRIVEWAY) -725 SF FENG� <c�' Z y Try�p \ \ 0 C� 0 \ 70.. PROVIDED BUFFER PLANTING 3,844 SF OK - — 2(TA) SF 0 Scp 2� m ` 00 F F w J a RESTORATION PLANTING REQUIRED PER CBLAD MANUAL TABLE A AC Jq` / �<c,� LL 03 # OF 400-SF UNITS 9 PLANTS REQUIRED PER UNIT REQUIRED PROVIDED PLANTING STEM SLIPS 1 CANOPY TREE 9 TREES 9 TREES OK / �' �h 2 UNDERSTORY TREES 18 TREES 18 TREES OK 3 SMALL SHRUBS 27 SHRUBS ail SHRUBS OK / 2� 3 i ° (C) MITIGATION PLANTING PLAN MAINTENANCE SCHEDULE 0 10 20 30 SCALE: 1 "=10' FIRST YEAR — PERFORM ROUTINE INSPECTIONS MONTHLY YEARS 2-5 — PERFORM ROUTINE INSPECTIONS QUARTERLY ROUTINE INSPECTION CHECKLIST: REVISIONS • INSPECT FOR THE NEED TO CONTROL INVASIVE SPECIES, GRASSES AND VINES # DESCRIPTION DATE • CONTROL INVASIVE SPECIES AS NEEDED USING MULCH, GEO—TEXTILE FABRIC OR MECHANICAL MEANS • ENSURE BUFFER AREA REMAINS UNMOWED 1 MITIGATION PLAN COMMENTS 1/3/2020 • PERFORM WATERING OF PLANT MATERIALS 2 FLOOD STUDY COMMENTS 3/29/2020 PLANTING CLUMPS REED ROLLS ANNUALLY — INSPECT FOR THE NEED TO THIN OUT BUFFER OF UNWANTED OR INVASIVE SPECIES METHODS OF ESTABLISHING REED BANK VEGETATION (PLATE 3.22-3 FROM VESCHB) o `J MI L F. S Lic. No. 33028 03/30/2020 TAIs �� GALVANIZED WIRE _6 er �s�ONAL TWISTE[7 FOR SUPPORT GARDEN Fio F y f Y�C> SURVEYOR'S TAPE DIA MIN RUBBER HOSE d UPRIGHT STAKES REMOVE BURLAP, TURN BUCKLE 'MIRE & ROPE FROM sheet title: TOP HALF OF BALL RElvlf]'VE BURLAP FROM TOPI'.,f3 OF ROUT E&L w w MITIGATION m o o 0 DOUBLE '57RAND, N I N a 12—GAUGE GALVANIZED w w SHRUB ZONE 2'—WIDE I � SHRUB ZONE 2'—WIDE w w PLAN a 1 /8 DEPTH OF WIRE, TWISTED 3" SHREDDED HAROW-000 MULCH � �— (VARIES 6 —12) REED REED (VARIES 6 —12 ) � m 2�_3„ AIII~FR MAX BA1-4 NK STREAM CL- BANK o 2°`— �' MULCH TAMP OR WATER TOPSOIL 3 EARTH 'BERM TO FORM SAUCER ZONE ZONE MIXTURE AT 6" INTERVALS: w Z WATER THOROUGHLY WHEN HOLE E r 2f 3 FULL 24X2" HARDWOOD STAKES I sheet # W 3 x X 3f" MIN LENGTH -. BAC K I I LL BACKF1 LL i - MIN 12" BEYC]NL1 " AKIN 3 " BEYOND SLOPE VARIES RODTBAI.L � �o � ..s ROCTRALIL (2:1 MAX) NORMl�L DEPTH 8"-12" ( ) OF 7 PLACE STAKES L�SEN S.UBsI}IL AT PARALLEL TO °�e� UPRIGHT STAKES � 6" MINIMUM BE : , _ �TTI?M OF EXCAVATION PROVIDE VDOT STD. EC-2 — o WALK'S & BUILDINGS Ei{Tf<NJ[3 TO FIRM BALL AND I�(JTTOkA OF To 5" MIN C+FPT�I, TAMP SOIL STABILIZATION MATTING � M BEARING EXCALVATION scale: 1"=10' u DECIDUOUS TREE PLANTING DETAIL EVERGREEN TREE PLANTING DETAIL TYPICAL MITIGATION PLANTING CROSS-SECTION date: V) M M (TAKEN FROM PRINCE WILLIAM COUNTY, VA DSM) (TAKEN FROM PRINCE WILLIAM COUNTY, VA DSM) 11/30/2019 @ 2020 - 30 SCALE, LLC 37, 5"ffN e .37'V2-TN Custom Soil Resource Report Soil Map 7 ITY10 T 1LIL 7 1J 3p 74" 71?NYI1 rw M Mm le: 1;24,7CO if p mA part-ak (8.5' x 11"sheet ) a Mcters ° N 0 350 700 1400 2100 Feet 0 M 4OX Mao f" ]e& for- Corner ° -tins; 4 5& Eage dos; t7T1 I Z 17N WGSM 0 N RCS SOILS MAP SUMMARY OF SOIL TYPES IN CONTRIBUTING DRAINAGE AREA DA= 1,506 AC SOIL GROUP SOIL # SOIL NAME ACRES % C 1 B MEADOWVILLE 2.0 0.1 % D 16 CODORUS 40.8 2.7% D 51B BUGLEY 157.3 10.4% D 51C BUGLEY 283.1 18.8%0 D 51 D BUGLEY 459.4 30.5% D 51E BUGLEY 26.7 1.8% D 52E BUGLEY 29.8 2.0% B 53B DANRIPPLE 7.6 0.5% C 55B DANRIPPLE 1.6 0.1 % B 62B BUFFSTAT 96.1 6.4% B 62C BUFFSTAT 126.7 8.4%® B 76 DAN RIVER LOAM 0.0 0.0% B 77 DAN RIVER - CODORUS 17.6 1.2%© B 80B LITTLEJOE 182.7 12.1 %n B 80C LITTLEJOE 4.2 0.3% D 95 HATBORO 68.5 4.5% D W WATER 2.1 0.1 %© TOTALS 1,506 AC 100.0% R a 37' 53`2r N HYDROLOGIC SUMMARY SOIL GROUP SUMMARY A B G D TOTALS LAND AREA 0 434.9 3.6 1067.7 1,506 AC 0% 29% 0% 71%0 100% NOTE: PREDOMINANT SOILS TYPE IS D COMPOSITE CN CALCULATIONS AREA (AC) GROUP CN CN*AREA OPEN SPACE/LAWNS (GOOD) 67 D 80 5,360 28 B 61 1,708 SUBTOTAL 95 7,068 WOODSIRURAL AREA (GOOD) 985 D 77 75,845 402 B 55 22,110 SUBTOTAL 1,387 97,955 IMPERVIOUS AREA ROADS/DRIVEWAYS HOUSES WAT E R TOTAL 18 BID 98 1,744 3 BID 98 294 3 BID 98 294 SUBTOTAL 24 2,332 1,506 AC 107,355 71 DRAINAGE MAP PRECIPITATION DATA AND TIME OF CONCENTRATION CALLS NOAA ATLAS 14 DATA 1-YR 2-YR 10-YR 50-YR 100-YR 24-HR PRE0PITATION (IN) 2.90 3.51 5.30 7.56 8.71 12-HR PRECIPITATION (IN) 2.44 2.92 4.31 6.07 6.96 TYPE OF FLOW L (FT) HI ELEV LO ELEV SLOPE TT SHEET FLOW 200 582 576 3% 12 MIN SHALLOW CONCENTRATED FLOW 342 576 558 5% 2 MIN CHANNEL FLOW 13624 558 320 2% 78 MIN TIME OF+ CONCENTRATION 92 MIN PEAK FLOW RATES FROM TR-55 ANALYSIS 1-YR 2-YR 10-YR 100-YR PEAK FLOW (CFS) 361 595 1414 3204 0 1000 2000 3000 SCALE: 1 "=1,000' REVISIONS # DESCRIPTION DATE 1 MITIGATION PLAN COMMENTS 1/3/2020 2 FLOOD STUDY COMMENTS 3/29/2020 F\ ET11SCALE ENGINEERING owner: TINA TAYLOR C/O STEVEN LOWE 4051 JACOBS CREEK DRIVE SCOTTSVILLE, VA 24590 engineer: 30 SCALE, LLC 871 JUSTIN DRIVE PALMYRA, VA 22963 p: 434.242.2866 e: mike@30scale.com web: www.30scale.com �4 W cc m O U o Nil .L F. S Lic. No. 33028 03/30/2020 i Q z z sheet title: DRAINAGE PLAN sheet # 4 OF scale: 1"=1,000' date: 11/30/2019 @ 2020 - 30 SCALE, LLC A 10 i 00 ` 10+00 11+Q0 -- - B I I I — 10+00 11 +00 C I 1 1-7 D 10 i 00 I 11 i 00 10+00 11 +00 F10+100 i � 11 +90_ 1 a+00 11 +00 G, STEEP SLOPES �s TMP 104-23 TMP 104-14B3 HADEN SCRUGGS TINA TAYLOR ZONE. RA ZONE. RA STEEP SLOPES �A USE. RESIDENTIAL USE. RESIDENTIAL 305 DB 641 PG 175 I EX PROPERTY DB 5101 PG 445 2 EX STREAM LINE EXISTING 100-YEAR CENTERLINE FLOODPLAIN BASED ON EXISTING 100-YEAR MODEL FLOODPLAIN BASED ON MODEL _ --- I I o0 12+00 3+00 01 +I OOI I I 15+I 00 I 16+I 00 I 17+I 00 I 18+I 00 i 19I 19+I 66 A PROP 19+0 19+BRIDGE 12+00 4+OP 15+00 16+00 17+00 18+00 66 B 12+00 13+0 114+do 15+00 \ 16+00 17+00 + i 1940 19+66 C 1 I I I 1 I .`1 I I I I I 1 I 12+00 13+0 \' X•�RAtEt-at- 15+00 17 18+00 / 9+00 19+66 � 18+�00 1 /19+I 00 I 9+6612+0 13+00 1 I 124oq i I 13400 i 14 I i � - tb66 - - I - 1� i OO - i - 174Q_Q - 18400 - -I 19 100 i 19466 E X. BLD I F - - 12 i 0 EI 13 100 I 14+ 0 I _ 15 i 00 I 16 i 00 I 17 i 00 18+00 19 i 00 119 i 66 G 9 TMP 104-14B JAMES C JUSTICE COMPA ZONE. RA _ - USE. VACANT PROPOSED FLOODPLAIN 965 P 0, cN AFTER CONSTRUCTION OF �X c BRIDGE CROSSING u� � oo 96- TMP 104-9C JAMES C JUSTICE COMPANIES C W \ ZONE RA I N X USE. VACANT 00 oo DB 3965 PG 005 I I cN o ZONE A 100—YEAR FLOODPLAIN AS PER FEMA EX STREAMS FIRM 51003CO450D, EFFECTIVE DATE 2/4/2005 I, GRAPHICAL TIE—IN TO FEMA ZONE A FLOODPLAIN CENTERLINE ICD � I o _ I t i 0 i I V I i � � I / I o GRAPHICAL TIE-IN TO FEMA ZONE A I FLOODPLAIN I 00 / I WATER PROTECTION I ORDINANCE BUFFER 0 50 100 150 SCALE: 1 "=50' REVISIONS # DESCRIPTION DATE 1 MITIGATION PLAN COMMENTS 1/3/2020 2 FLOOD STUDY COMMENTS 3/29/2020 DI SCALE ENGINEERING owner: TINA TAYLOR C/O STEVEN LOWE 4051 JACOBS CREEK DRIVE SCOTTSVILLE, VA 24590 engineer: 30 SCALE, LLC 871 JUSTIN DRIVE PALMYRA, VA 22963 p: 434.242.2866 e: mike@30scale.com web: www.30scale.com VT - 0 o ` MI L F. S Lic. No. 33028 03/30/2020 �s!ONAL sheet title: FLOODPLAIN PLAN sheet # OF scale: III=50' date: 11/30/201S 340 335 330 325 320 H 335 330 325 320 340 335 330 325 320 M 0 v c M _ 100-YR E=326.20 _ 10-YR WSE 325.26 u - 2-YR WSE 323.56 - 1-YR WSE= 22.77 N 00 eri N M r-i N � Tt N n" N Uri N nn c-I l6 N o rl ri n! -- 13+00 13+50 14+00 14+50 15+00 15+50 CROSS-SECTION A -A 10-YR WSE=3 6.16 1-YR WSE= 25.22 EX. RILL UPSTREAM FACE CRO S-SECTIONAL AREA=32 SF (3)15" PIPES o 0C m U. � M N o Ln N 13+00 13+50 14+00 14+50 15+00 15+50 CROSS-SECTION D-D - Ws -3 -1-0--YR- WSE=3 2-YR WSE=32 .97 -YR WSE=32 .29 O 00 N 0) Ll1 N d N N G U_3 N lD l6 N I� 0^ r C3 C m 13+00 13+50 14+00 14+50 15+00 15+50 CROSS-SECTION G-G 340 340 335 335 330 330 325 325 320 320 340 340 335 335 330 330 325 325 320 320 340 335 330 325 320 Oi N M M O M M - WSE 326.86 0-YR WSE=3 5.92 4-2--YR WSE=3 4.22 J 01 �o N n 00 4 N nn, OC N O N nn• r Lr N r 00 N M 13+00 13+50 14+00 14+50 15+00 15+50 CROSS-SECTION B-B 10 -YR WSE=327 92 10 YR WSE=326. 3 i \ 2 YR WSE=325.8 - 1 YR W E=325.01 Ln OC'' 00 Ln N c-I CV (Z U! N Ln N 00 N 01 N 13+00 13+50 14+00 14+50 15+00 15+50 CROSS-SECTION E-E 340 340 335 335 330 330 325 325 320 320 00 0i N M 340 340 335 335 330 330 325 325 320 320 N O M M 100-YR WSE= 27.22 _ WSE=3 6.35 _-TQ_-_YR - -WSE -32 .51 1-YR WSE 324.33 ,I EX. FILL DO CROSS- SECTI ONAL STREAM FACE AREA=95 SF 3 15" PIPES N r•� N m N - 0) N Uf N 11 fV o0 N m 13+00 13+50 14+00 14+50 15+00 15+50 CROSS-SECTION C-C - SE= 28.32 - 7.17 10-YR WSE=3 1-YR WS 325.14 10 00 N n N tZ N Lq N N n, O lD N 01 l0 O 00 N O O M M 13+00 13+50 14+00 14+50 15+00 15+50 CROSS-SECTION F-F SUMMARY OF WATER SURFACE PROFILE - EXISTING CONDITIONS NO -RISE IN WATER SURFACE ON ADJACENT PROPERTIES SECTION STA PROFILE Q (Cfs) INVERT (ft) WSE (ft) CRIT ES (ft) EG ELEV (ft) EG SLOPE (ft/ft) VEL (ft/s) FLOW A (sq ft) TOP WID (ft) G 1+30 100-YR 3204 321.80 3 28.72 328.72 329.63 0.01 10.13 511.00 257.09 F 1+Q9 100-YR 3204 321.40 328.32 328.32 329.23 0.01 10.13 511.00 257.09 E 0+99 100-YR 3204 321.20 327.92 327.92 328.92 0.01 11.16 479.32 233.50 D 0+84 100-YR 3204 320.96 327.25 327.25 328.25 0.01 10.89 450.35 217.35 0+73 Culvert C 0+63 100-YR 3204 320.40 327.22 327.85 0.01 8.07 594.01 251.72 B 0+45 100-YR 3204 320.26 326.86 326.86 327.71 0.01 9.90 523.25 267.81 A 0+10 100-YR 3204 319.60 320.20 326.20 327.05 0.01 9.90 523.24 267.81 0 50 100 150 HORIZ. SCALE: 1 "=50' 0 5 10 15 VERT. SCALE: 1 "=5' REVISIONS # DESCRIPTION DATE 1 MITIGATION PLAN COMMENTS 1/3/2020 2 FLOOD STUDY COMMENTS 3/29/2020 © 2020 - 30 SCALE, LLC 340 335 owner: TINA TAYLOR C/O STEVEN LOWE 330 4051 JACOBS CREEK DRIVE SCOTTSVILLE, VA 24590 engineer: 30 SCALE, LLC 871 JUSTIN DRIVE 325 PALMYRA, VA 22963 p: 434.242.2866 e: mike@30scale.com web: www.30scale.com 320 340 335 330 325 320 101 � � m N V o o 0 op a 0 � 0 V A 0 Nil -L F. S Lic. No. 33028 03/30/2020 /o\A1. � sheet title: EXISTING CROSS -SECTIONS sheet # 6 OF scale: H:1"=50' V: 1"=5' date: 11/30/2019 © 2020 - 30 SCALE, LLC m co v M N 0 m w Q Z 3 E1 335 330 325 320 R 335 330 325 320 100-YR E=326.20 _ 10-YR WSE 325.26 - 2-YR WSE 323.56 - 1-YR WSE= 22.77 i-I O m N m I Ln N M Ql rn N m 1-1 r_,� r1 N M N d �t N M 1- r I Ln N m Ln 1-1 kD N m 335 330 325 13+00 13+50 14+00 14+50 15+00 15+50 CROSS-SECTION A -A 340 340 335 335 330 330 325 325 320 320 M -1 t\ N m PROP. 6 6 PRESSURE IREATED LUMBER GUARD RAILS TOP OF 100--YR WSE= GUARD RAIL EL 27.42 326.0) - -7 0-YR WSE=326.51 - 1-YR WSE=32 .98 PROP. BRIDGE (UPSTREAM FACE) CROSS -SECTIONAL A EA=68 SF -i O O M M U) N 00 N M M Ln N M lD N N M O O Ln N m l0 O (Z N m d I� N m 320 13+00 13+50 14+00 14+50 15+00 15+50 CROSS-SECTION D-D 340 340 335 335 330 330 325 325 320 320 r-I 01 N m 2-YR WSE=32 5.97 1-YR WSE= 2 0 Ln rn m f'V m N O 00 fV m .--I rn Ln fV m N N m m O Ln fV m m l0 N m m 1_ 00 f'V m 13+00 13+50 14+00 14+50 15+00 15+50 CROSS-SECTION G-G 340 335 330 325 320 - -RINSE=3 l0 M rn N m d 01 QD N m l0 rl 'T N m N 00 m N cm O O Ln N cn N Ln N m m Vf 110 N m 13+00 13+50 14+00 14+50 15+00 15+50 CROSS-SECTION B-B 100- R WSE=327.9 - 2 R WSE=325.80 - 1-YR WS =324.83 N O M m Ln 00 fV cm 00 Ln N cm 1 -1 fJ M l0 Ln N cm Lq l0 N c» I N m 13+00 13+50 14+00 14+50 15+00 15+50 CROSS-SECTION E-E 340 340 335 335 330 330 325 325 320 320 r` t\ t\ N m 340 340 335 335 330 330 325 325 320 320 PROP. 6X6 PRESSURE TREATED LUMBER GUARD RAIL TOP OF GUARD RAIL E=326.99 EL=326.0 17 100-YR W - 10-YR WS =326.16 2-YR WSE 325.3� - 323.68 PROP. BRIDGE 1-YR WSE (DOWNSTREAM FACE) _PRO . BRIDGE (UPSTREAM FACE CROSS -SECTIONAL NREA=80 SF 00 1, m N m m r,� (- N m GY N m 00 N f V IN m 1_ 00 N m Ln N m 00 Cl l0 N m 13+00 13+50 14+00 14+50 15+00 15+50 CROSS-SECTION C-C 28.32 -Yf_WSE= _ 10-YR WSE=3 7.17 7-7 2-Y _WSE=325.73 1-YR WS -325.31 rl O m m LO 00 N m rl l0 N m QD : N N m 0 O lD N m C l l0 N cm O 00 N m 13+00 13+50 14+00 14+50 15+00 15+50 CROSS-SECTION F-F SUMMARY OF WATER SURFACE PROFILE - PROPOSED CONDITIONS NO -RISE IN WATER SURFACE /_ ON ADJACENT PROPERTIES SECTION STA PROFILE Q (CfS) INVERT (ft) WSE 4ft) XRITES (ft) EG ELEV (ft) EG SLOPE (ft/ft) VEL ft/s) FLOW A (sq ft) TOP WID (ft) G 1+30 100-YR 3204 321.80 11 328.72 328.72 329.63 0.01 10.13 511.00 257.09 F 1+09 100-YR 3204 321.40 3 2 8.3 2 328.32 329.23 0.01 10.13 511.00 257.09 E 0+99 100-YR 3204 321.20 3 2 7.9 2 327.92 328.92 0.01 11.16 479.32 233.50 D 0+84 100-YR 3204 320.50 327.67 327.27 328.36 0.01 9.48 571.18 238.94 0+73 Bridge C 0+63 100-YR 3204 320.50 326.99 326.94 327.89 0.01 10.78 504.50 239.41 B 0+45 100-YR 3204 320.26 326.86 326.86 327.71 0.01 9.90 52.3.25 267.81 A 0+10 100-YR 3204 319.60 326.20 326.2.0 327.05 0.01 9.90 523.24 267.81 0 50 100 150 HORIZ. SCALE: 1"=50' 0 5 10 15 VERT. SCALE: 1 "=5' 340 335 330 325 320 N In 00 N m I 335 330 325 320 QD 01 CT) N m REVISIONS # DESCRIPTION DATE 1 MITIGATION PLAN COMMENTS 1/3/2020 2 FLOOD STUDY COMMENTS 3/29/2020 J SCALE ENGINEERING owner: TINA TAYLOR C/O STEVEN LOWE 4051 JACOBS CREEK DRIVE SCOTTSVILLE, VA 24590 engineer: 30 SCALE, LLC 871 JUSTIN DRIVE PALMYRA, VA 22963 p: 434.242.2866 e: mike@30scale.com web: www.30scale.com � m N V o o 0 op a 0 � LL 0 V 1 o �11 -L F. S Lic. No. 33028 03/30/2020 /O\.\1. \ sheet title: PROPOSED CROSS -SECTIONS sheet # 7 OF7 scale: H:1"=50' V: 1"=5' date: 11/30/2019