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HomeMy WebLinkAboutSDP201200032 Plan - Approved 2014-06-09SHEET INDEX SHEET 1.0 - COVER SHEET 2.0 -ENTRANCE IMPROVEMENTS & SIGHT DISTANCES PLAN SHEET 2.1 -ROAD PLAN (STATION 10+71.91 TO 17+51.61) s SHEET 2.2 -ROAD PLAN (STATION 17+51.91 TO 38+29,76) SHEET 3.0 - ROAD PROFILE (STATION 10+00 TO 18+50) SHEET 3.1 - ROAD PROFILE (STATION 18+50 TO 27+50) SHEET 3.2 - ROAD PROFILE (STATION 27+50 TO 38+29.76) SHEET 3.3 - CONNECTOR ROADS - PROFILES SHEET 4.0 - CULVERT PROFILES SHEET 4.1 - CULVERT PROFILES SHEET 5.0 - CRITICAL SLOPES PLAN SHEET 6.0 -STREAM BUFFER DISTURBANCE PLAN SHEET 6.1 - MITIGATION PLAN SHEET 7.0 -EROSION & SEDIMENT CONTROL PLAN (STATION 10+00 TO 17+51.91) SHEET 7.1 - EROSION & SEDIMENT CONTROL PLAN (STATION 17+51.91 TO 38+29.76) SHEET 7.2 - EROSION & SEDIMENT CONTROL NOTES & DETAILS SHEET 7.3 - EROSION & SEDIMENT CONTROL DETAILS SHEET 7.4 -EROSION & SEDIMENT CONTROL NARRATIVE SHEET 8.0 - DRAINAGE AREA MAP - CULVERTS SHEET 8.1 - DRAINAGE AREA MAP - SEDIMENT TRAPS SHEET 9.0 - IMPERVIOUS AREAS SHEET 9.1 - STORMWATER MANAGEMENT PLAN SHEET 9.2 - STORMWATER MANAGEMENT DETAILS SHEET 10.0 - ROADWAY LIGHTING PROJECT/SITE DATA Name of Development: The Miller School - New Entrance Name of Owner: The Miller School of Albemarle Tax Map/Parcel Number: TMP 72-32 Zoning: Rural Areas, RA Waivers requested: stream buffer, critical slopes, curb and gutter Magisterial District: Samuel Miller County/State: Albemarle County, Virginia Source of Topography: County GISand field run Source of Survey: Roger W. Ray 6 Associates, Inc. The site is located within a reservoir watershed Traffic information (from school letter dated April 6, 2012) Weekdays - 136 vtpd Weekends - 50 vtpd LEGEND Ex. - Existing T.B.R. - To Be Removed dbl. - double _...... i rw�aw farm ----- _ h'eaekaw r - �° CArr . Alnr�tain � Opd !?xflard INSPECTIONS ARB DEPARTMENT OF FIRE RESCUE ALBEMARLE COUNTY SERVICE AUTHORITY Farm VIRGINIA DEPARMENT OF TRANSPORTATION HEALTH DEPARTMENT Acreskl Western "� '�' ' R iNestrwi CandE Crozet GaRrsSr n drIlelgyri QW Trail "' Wesall Hwy Rtd �`� Lott st ; Rid NEO NrxTh r" Vlllar�e C3� 't,!ectnims�^!W�'rda � sryka,.;: �rowmville VICINITY MAP MITIGATION AREA - SEE SHEET C6.1 / Mechums River / _-!X, / Miller School Property Line PROPOSED NEW ENTRANCE Approx. 0.70 miles 4w 44- ww4�w�1 w .I Mil ler Schoo 1 Road State Rt. 635 \k � 123 \1 l� HEADMASTER'S / HOUSE � r Miller School Road � State Rt. 635 � � r CATON HALL OLD MAIN Ex. service road \\ i/ / I II �_ Existing South Entrance ; Existing North Entrance I I� Nz�� Nz�� Dick Woods Road i by the Albers rhe Cotmi°; Community Development DcpsdMenf Dete [6:_j _- !`t FileSip 20 La o on32 1_ APPROVALS DATE DEPARTMENT OF COMMUNITY DEVELOPMENT PLANNER/ZONING ENGINEER INSPECTIONS ARB DEPARTMENT OF FIRE RESCUE ALBEMARLE COUNTY SERVICE AUTHORITY VIRGINIA DEPARMENT OF TRANSPORTATION HEALTH DEPARTMENT DATE Nov, 18, 2009 REVISIONS Jan. 11, 2010 July 7, 2010 February 6, 2012 April 30, 2012 November 30, 2012 January 9, 2013 January 23, 2013 April 15.2013 May 30, 2013 June 10, 2013 June 9, 2014 w w SCALE K1_1 o,,.Aj,TH op -N a � � S M ff H a CERTIFICATE No. .off 14c�511,(� %I IDNAL � N P. SMITH, PE ENGINEERING, INC, @@LF C CME 000H M DOC - Lao D Ff MMM 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embargmail.com DWG. NAME Miller School 2.pro SHEEP C1.0 NEW STOP/STREET SIGN NEW 20' WIDE DRAINAGE EASEMENT (DB 4498, PG 440; PLAT 433) NEW JUNCTION BOX - (SEE DETAIL BELOW) 390 LF OF SIGHT DISTANCE REQUIRED 6 SHOWN TRAFFIC STUDY PERFORMED - 65% OF TRAFFIC TRAVELS 30 MPH OR LESS. SPEED LIMIT 35 MPF DB 4498, PG 446; PLAT 433 PROPOSED SIGHT EASEMENT ALL TREES WITHIN THIS AREA TO BE CUT 6" ABOVE GROUND. STUMPS TO REMAIN. ALL VEGETATION TO BE CUT AND MAINTAINED NO HIGHER THAN THE EDGE OF PAVEMENT. LIMBS HANGING OVER THE SIGHT DISTANCE SHALL BE CUT. ONLY SIGNIFICANT TREES ARE SHOWN. SOME MAY REMAIN AT THE DISCRETION OF VDOT. EXTEND EXISTING BOX CULVERT Ex. 48"x 48" concrete box culvert£ inv in=601.73 inv out=599.7 / Ex. 15" poplar ZZ/ 14. Ex. 21" poplar / TO BE CUT/ / / o Ex. 15" dbl. oplar TO BE CUT /� L. -61 Ex. 18" dbl. poplar TO BE CUT Ex. 12" hickory ALL 3 TO BE CUT Ex. 15 " maple Ex. 12" maple 0 Ex. 15" ma le TO BE CUT Ex. 15" maple TO BE CUT �} o Ex. 2" oaulownia TO BE CUT Ex. 9" walnut TO BE CUT Ex. paved shoulder / d/ Ijl� �f }r III Ex. 18" concrete pipe I l,r I I / inv in=590.56 } I } } } I1,1 inv out=587.48 III II 111.11 I �,�,� SII \11 \11 ' 111 C STA 10+71.91 MATCHLINE - SEE SHEET C2.1 r7f Two e ing str ms converging 4.00 % - / - x. 15' hickory 10 - • i / - 2 TO 1 -SLOPE - - - i-- 620 --------- --- - - - �- - - -620 - - - \ N I .. Ex. 30' Prescriptive easement Ex. 18 .. _:Z__ bbl.--pop�r - �- �, a e Rout NEW ENTRAN E J 11 35 �a \ / i `40= _ _.� Schdol Road Ex. 15" poplar Ex. 12dbl. poplar I/ // - - - - - - / Ex. 12' poplar Esc. 24" beech- - - Ex. 18" poplar NEW 100' TAPER --------- ---- ___ SEE TYPICAL ROAD- - - - - ----------- Ex. 12" poplars (2) SECTION ON C2.1 - - - - - - - - - - - - - - /.I- %f 1 "--Ex. 21" maple Ex. 12" hickorys (2) Ex. 12" dbl. maple Ex. 12" dbl. poplar Ex. 21" maple TO BE CUT Ex. 18" quad beech -" Ex. 18" white oak '--Ex. 15" maple Ex. 18" sycamore Ex. 15" white oak Ex. 18" maple snag TO BE CUT Ex. 15" red oak Ex. 12" poplar �\A 111 �- � II 11 /11) I I� ' 1 \ ' Ex. 21" poplar I I I E� Isign Z /Id / / J \ x End of field run survey 4n / Ex. 24'� \ \ sycamore ILINE OF SIGHTI NEW GR -9 - 650 - END SECTION - - NEW GR -2 GUARDRAIL STA 10+40.43 End of field run survey NEW 48" x 48" RCP BOX CULVERT LINE OF SIGHT WITH HEADWALL NEW GR -9 END SECTION NEW JUNCTION BOX Scale: 1'=114" 198 °24'01"te1= 48" BOX( CULVERT 602.00 6011.33 11 11 11 � 11 11 II PLAN VIEW NEW DI -7 TYPE IB GRATE TOP ELEV=613.50 NEW PRE -CAST REINFORCED CONCRETE STRUCTURE -613.50 -612.92 -611.92 NEW PRE -CAST REINFORCED CONCRETE STRUCTURE -608.04 48" BUX CULVEHI 600.67 ` 600.00 NEW FOOTER PROFILE VIEW """-NEW STONE BASE The! final design of this structure, including exact dimensions, shall be prepared by the pre -cast manufacturer. It shall be designed and installed in accordance to VDOT specifications. TRAFFIC SIGNS: STOP SIGNS (7): 18" x 18" RI -1 12'-15' FROM EP OF INTERSECTING ROAD 4' FROM EDGE OF PAVEMENT POSTS (7): 2" x 2" x 9' -14 GA. SQUARE GALV. QUICK PUNCH BREAK -AWAY POST IN LARGE SLEEVE SUPPORTED IN CONCRETE 7/16" HOLES; NO HOLES 18" ABOVE SUPPORT STREET SIGN (1): MILLER SCHOOL ALBEMARLE COUNTY FINAL PLAN GENERAL NOTES General Construction Notes 1. Prior to any construction within any existing public right-of-way, including connection to any existing road, a permit shall be obtained from the Virginia Department of Transportation (VDOT). This plan as drawn may not accurately reflect the requirements of the permit. Where any discrepancies occur the requirements of the permit shall govern. 2. All materials and construction methods shall conform to current specifications and standards of VDOT- unless otherwise noted. 3. Erosion and siltation control measures shall be provided in accordance with the approved erosion control plan and shall be installed prior to any clearing, grading or other construction. 4. All slopes and disturbed areas are to be fertilized, seeded and mulched. 5. The maximum allowable slope is 2:1 (horizontal:vertical). Where reasonably obtainable, lesser ;slopes of 3:1 or better are to be achieved. 6. Paved, trip -rap or stabilization mat lined ditch may be required when in the opinion of the County Engineer, or designee, it is deemed necessary in order to stabilize a drainage channel. 7. All traffic control signs shall conform with the Virginia Manual for Uniform Traffic Control Devices. B. Unless otherwise noted all concrete pipe shall be reinforced concrete pipe Class III. 9. All excavation for underground pipe installation must comply with OSHA Standards for the Construction Industry (29 CFR Part 1926). General Construction Notes for Streets (This list is in addition to the General Construction Notes) 1. All materials and construction must be tested and documented according to VDOT standards and specifications. 2. Surface drainage and pipe discharge must be retained within the public right-of-way or within easements prior to acceptance. All drainage outfall easements are to be extended to a boundary line or a natural watercourse. 3. Guardrail locations are approximate. Exact length, location and appropriate end treatments will be field verified at the time of construction. Additional guardrail may be required at locations not shown when, in the opinion of VDOT (for public roads) or the County Engineer (for private roads), or designee, it is deemed necessary. When guardrail is required, it shall be installed four (4) feet offset from the edge of pavement to the face of guardrail, and roadway shoulder widths shall be increased to seven (7) feet. 4. Where urban cross sections are installed, all residential driveway entrances shall conform to VDOT CG -9 (A, B or Q. 5. Where rural cross sections are installed, all residential driveway entrances shall conform to VDOT standard PE -1. 6. Compliance with the minimum pavement width, shoulder width and ditch sections, as shown on the typical pavement section detail, shall be strictly adhered to. 7. Road plan approval for subdivisions is subject to final subdivision plat validation. Should the final plat for this project expire prior to signing and recordation, then approval of these plans shall be null and void. B. All signs or other regulatory devices shall conform with the Virginia Manual for Uniform Traffic Control Devices and the Albemarle County Road Naming and Property Numbering Ordinance and Manual., 9. Traffic control or other regulatory signs or barricades shall be installed by the developer when, in the opinion of the County Engineer, or designee, they are deemed necessary in order to provide safe and convenient access. 10. The speed limits to be posted on speed limit signs are 5 mph below the design speed, or as determined by VDOT for public roads. 11. VDOT standard CD -1 or CD -2 cross -drains are to be installed under the subbase material at all cut and fill transitions and grade sag points as shown on the road profiles. 12. A video camera inspection is required for all storm sewers and culverts that are deemed inaccessible to VDOT or County inspections. The video inspection shall be conducted in accordaince with VDOT's video camera inspection procedure. DATE February 6, 2012 REVISIONS April 30, 2012 November 30, 2012 January 9, 2013 June 9, 2014 J O OV W Cn < ry W J W J �n G W W � N SCALE 1'=30' A1,TH OF Df BRIAN P. SMITH a CERTIFICATE No. .ate 14591 w� ONAL E��1 RIA'I,N P. SMITH, PE IVIL ENGINEERING, INC. VE BWffl o ISD FLMH aRg 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embargmail.com JOB NUMBER 09-011-00 DWG. NAME Miller School 2.pro SHEET C2.0 U.Jw wU w= U� z �n UJ SCALE 1'=30' A1,TH OF Df BRIAN P. SMITH a CERTIFICATE No. .ate 14591 w� ONAL E��1 RIA'I,N P. SMITH, PE IVIL ENGINEERING, INC. VE BWffl o ISD FLMH aRg 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embargmail.com JOB NUMBER 09-011-00 DWG. NAME Miller School 2.pro SHEET C2.0 County of Albemarle Conservation Plan Checklist — To be placed on Landscape Pians (Handbook, pp III -284-111-297 for complete specMeations) 1. The following items shall be shown on the pian: ® Trees to be saved; ® Limits of clearing (outside dripline of trees to be saved); ® Location and type of protective fencing; ® Grade changes requiring tree wells or walls; ® Proposed trenching or tunneling beyond the limits of clearing. 2 Markings: ® All trees to be saved shall be marked with print or ribbon at a height clearly visible to equipment operators. ® No grading shall begin until the tree marking has been inspected and approved by a County Inspector. 3. Pre -Construction Conference: ® Tree preservation and protection measures shall be reviewed with the contractor on site. 4. Equipment Operation and Storage: ® Heavy equipment, vehicular traffic and storage of construction materials including soil shall not be permitted within the driplines of trees to be saved. 5. Soil Erosion and Stormwater Detention Devices: ® Such devices shall not adversely affect trees to be saved. 6. Fires: ® Fires are not permitted within 100 feet of the dripline of trees to be saved. 7. Toxic Materials- ® Toxic materials shall not be stored within 100 feet of the dripline of trees to be saved. 8. Protective Fencing; Trees to be retained within 40 feet of a proposed building or grading activity shall be protected by fencing. ® Fencing shall be in place and shall be inspected and approved by a County Inspector prior to grading or construction. 9. Tree Wells: ® When the ground level must be raised within the dripline of a tree to be saved, a tree well shall be provided and a construction detail submitted for approval. lo. Tree Walls: ® When the grand level must be lowered within the dripline a tree to be saved, a tree wall shall be provided; and a construction detail submitted for approval. 11. TreneVeR and Tunneling: ® When trenching is required within the limits of clearing, it shall be done as far away from the trunks of trees as possible. Tunneling under a large tree shall be considered as an alternative when it is anticipated that necessary trenching will destroy feeder roots. 12 Cleanup: ® Protective fencing shall be the last items removed during the final cleanup. 13. Damaged Trap: ® Damaged trees shall be treated immediately by priming, fertilization or other methods recommended by a tree specialist. NOTE: IT IS THE DEVELOPER'S RESPONSIBILITY TO CONFER WITH THE CONTRACTOR ON TREE CONSERVATION REQUIREMENTS. CONTRACT (DATE) NEW STORMWATER MANAGEMENT ACCESS EASEMENT DB 4498, PG 450; PLAT 433 STA 16+95 NEW 15" HDPE STORM PIPE 67.69 LF @ 15.51% INCLUDING END SECTIONS INV IN=655.50 INV OUT=645.00 OUTLET PROTECTION (SEE DETAILS & TABLE) N W E S Ex. 4" plastic pipe inv. out=660.5 CONNECT TO NEW DITCH Existing rip -rapes T.B.R. �Ge + USE EC -2, LINING--��� E s' Cq H Old roadbed N U — t -u LU i `Q .. Cn - W LU O .. _ Q w �Z —.'.'.'..� .......... - C/) J _ A. T.M. 72-32 T.B.R. THE MILLER SCHOOL OF ALBEMARLE D.B. 68-754 D.B. 45-504 DESC . CHANGE GRADING ON CUT` D.B. 24-66 DESC . SLOPE FROM 1.5/1 TO 2/ 1. i CONTRACTOR TO CONSTRUCT A PERMANENT DIVERSION DITCH ABOVE THE 1,5 TO 1 SLOPES. 5/1/06 Page 1 of 1 Ex. baseball field FROM THE GRATE TO STA 10+90 FROM STA 10+90 TO STA 16+70 1.5 TO 1 SLOPE ! / .. - CONSTRUCT A 2' WIDE TRAPEZODAL DITCH, USE EC -3, TYPE A LINING / j / / ......i 12" MIN. DEPTH, 2 TO 1 BACK SLOPE, +, / / / %, ..'.' 4 TO 1 FRONT SLOPE. Old roadbed / / / / / / USE EC -3, TYPE A LINING ,fierce � � / / / / f / • / / � / �� � // 12 CHANGE GRADING ON CUT SLOPE FROM 2/1 TO 1.5/1. / TO i /SLOPE/ O b —66 Old roadbed // ,� Ex. woo'ds Ex. 12" hickory \ \ \ \ \ \ Woods 2 TO 1 SLOPE _ — — — — — — — — _ - . r. ' 64Q' — — — — — — — — — — — y ::1: / /,' / , Well established area of ground cover, understory ////,(o & canopy trees on both side of the stream o \ _ `'. .. j-'�. : / 6 q Uj 0, .. C/5 ............1 ... c,•1..'..'........ ......... _ — ...- -- � _._. / / LU -� �_ �� ------ X / Z--- • — — _ _'� ------ // :)J am NEW GR -9 END SECTION 18" poplar x NEW GR -e o GUARDRAIL G a 7 ro CUT SLOPE VARIES LININGS VARIES REFER TO PLANS DITCH 1.33' 3 TO 1 SLOPE MAXIMUM SHLDR ROAD WIDTH -4.00' VARIES FROM 20' TO 24' 2' SM -9.5A SUPERPAVE SLOPE 114, PER FT. SHLDR* * 7' WITH GR 4.00'--] 2 TO 1 SLOPE MAXIMUM UNLESS NOTED DIFFERENTLY 1' PER FT. 8' #221A COMPACTED SUBGRADE SLOPE BASESTONE C.B.R. FIELD TESTS OF 10 OR BETTER TYPICAL ROAD SECTION From Sta 10+00 to 38+04.07 Including Rt. 635 taper and connector roads A, B, C & D DATE February 6, 2012 REVISIONS March 30, 2012 April 30.2012 November 30, 2012 June 9, 2014 lannnm r L0 H SCALE 1'=30' ALTH o- Dr BRIAN P. SMITH a CERTIFICATE No. .off 14591 or -1�ssl CNAL E��l ZIAN P. SMITH, PE VIL ENGINEERING, INC. COV =W 9Mffl rEE o IUO PLURIN 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embargmail.com JOB NUMBER �0LA Miller School 2.pro SHEEP C2.1 CU USE EC -2, LINING NEW STOP SIGN oEx. cable guardrail X - 25'R � / 0 9 5 R KELOCATE OLD MAIN Ex . bench T.B.R.Q? / E / \ \ o ' -' x. light pole 3 +' #1000 r` ::.(D:- :;: / I_- CD O o / >.;.;.,. °f3c rT -1 Ex, 6" PVC pipe 07.1 �, r ; . ; ; RELOCATE / o CONNECTOR B' .1 _ �' inv out=702.68 m o xo 706 J - , X n :n SpA Ex. water meter / Ex. 30" \ n - _ x w . o o ��J :: :::....x : Ex . park i - Whits oak 1 r ` / _ w - �-- CU Cv r' CD �O T- Cfi ::::: O. In SAW -CUT x r� o v r� ----------- / Cv ; ; ... :.:: :. EXISTING W rn ✓Cv cfl�,�' o o �' «! _ �n _ ( ; :x ::::.: ' x ' : '� :an:. USE EC -2, L I G �y X o N �� v o m r x ,v r, �n rn Ix m X. rT PAVEMENTLn m Fk. cfl cq r, o x x x.. ::::::. . ::. - . ; :: ,c x v CONNECTOR C ' O c v / to -- --- - --- _ m r, i "� i 0o o U c b cn o CURB b o - . ,; ... \ Ex. sig ( �` o in � ' T d M LLQ m I E O C W a� O CDCU CU " ' i / ; : . : :::\ L (D U LL r- I N x CD �c D Z .00 x O� 0 ..;._ Xi n U x I I lin w > cD oo �, errs t7 <- N .... ::. - . . / SAW -CUT X �, w I� ) '- x �! f = - : _.. cD : - 700- ` f:: x . cel �` i m Miller Looe a�rn a o .:: ;:o:;: �.\ o..;. q, o� EXISTING r, vSam�el t _ w �" w o00 0. . ... :. ; . ; ; ::::-�::::.. ... _ o' , In Or° .. c� ,� Cn PAVEMENT \ a '1 r; ...;. . m� '�� °° o \ x oco a' :: ::..:::::: r : :: `:: 1 lac I \ co �` a t -.o - - oi� :: rn . NEW STOP SIGN Rric� �1 a tti - r - , . - - - - - _ _ \� \� 95.1 ' r'sY - / - r, / c cEi"::. EXISTING PAVEMENT TO BE REMOVED. t - c ,. v en ? 'fix. a � ' � GRADE TO DRAIN. TOPSOILED ::=tv :=::_-�lillow oak x - -. &MULCHED - FERTILIZED SEEDED USE L o LINING - , `� Ex. for f � stl Ex. sign W RE NOT FERTILIZED, NEW PAVEMENT. 1711.28 T.B. _ - - - Ex. bench / / ` _04 18p yx t Ex . b h ° / / - - 18 702 -� \ �6 R E 18" / / E . ma �' l - T. l4%. �' 690.4 �,ed %oak / / / / p • -F" - - / -'� Ex . 42 ., �Ex . Ex. forsythia r '� i ' Al E 40 ' 9� 102 - - ? 252q White oak k �x. 42" E 0 1 white` oak- -DROP-OFF ak - ° - R •`� o -BRZSP OFF 'S - - x. 6" PVC i e � Ex. 00 - P 0 62 22 6 A Inv out=698.87 T. FUSE EC 2, LINING �w e o _ I' --- - R, x o - S - Ex. fir -, e h dran D o ap assemb y- o0 9, wod • -- _ - NEW GR -9 J1� "695.0 >�` ,-END SECTION - 2621 Ex. 2" \ ` o B.R. NEW STOP �3G - \ - - - - 5 'p � : � � / - -- 1�J 6 - Ex. speed 52� U whi nak 90\ NEW STOP, SIGN �- limit sign Ex. pavement � ::� : _'� : � _ ::: _ ✓ v N i � �� 1-y1►1..� R Ab Ex . 27 " � ;::_.:. $ QHS ,Zg,A2 Ex. 2 white oak 5.14 "695.5 HATCHED AREA \ / / / / �::.•�<. R 1 gu b USE EC -2, LINING '� \ T.B.R. x`Y' / 2 D ;.;.;692 X co \ o / :: �:::. ::: , / / L DA �-T•- `: ; : , : _ : ' :::: \ CONNECTOR CU Ex. 12" ° ... beech / / / / x: / / / / 0' white oak _ \�hito oak Ex.grass grass o �� \ STA 29+44 . / : /_ / / cy�` NEW 15" HDPE STORM PIPE o% g 6 STA 5+28 STA 26+61 57.23 LF @ 7.86/ Ex . 27' F` 6 4.25 dead ous :�:.; ;: / / ��•�O. NEW 15" HDPE STORM PIPE NEW 18" HDPE STORM PIPE INCLUDING END SECTIONS + X N ag oli� 1 / �� 1 '� 52.29 LF @ 1.91% 67.04 LF @ 13.42% INV IN=703.50 ' ` willow oak X� T.B7R.I 1 / ♦ 1 INCLUDING END SECTIONS INCLUDING END SECTIONS INV OUT=699.00 - ::: x. 18 oa d� I ( I �• ��� INV IN -703.0 INV IN -699.00 OUTLET PROTECTION \ Ex. concrete wall ... v �i INV OUT=702.00 INV OUT=690.00 (SEE DETAILS TABLE) \ T .B .R / f :I / / OUTLET PROTECTION i - Ex. pa er X �, I , ` 1: ( / (SEE DETAILS 6 TABLE) i 1 / T.M. 72-32 �. ::: \ box THE MILLER SCHOOL OF ALBEMARLE / / , o SE EC -2, LINING Ex. soccer field x ao `a \ \ _ o� ( i D.B. 68-754 i i STA 0+ 18' -- CU \ \ 1 ( D.B. 45-504 DESC . NEW 15" HDDDPE` STORM`F TPE Ex . grass � \ \ \ : ■ \ I I ( D.B. 24-66 DESC . ' ' 42.50` F @ 2.35% Ex • 42"_ \ i' i' �' 24 INCLUDING END SECTIONS �` ed oak \ :Ex ex. le IN IN=690 0 sawtoot � � �L1SE EC -2, LINING I I \\ \ 3 Ext 36" I I INV O T=689 0(� . i i oak 1 , shOUTLET �ROTECTMN, ° �C TB .R . (S E DETAILS 6 TABLE) 6 ` NEW G\R_9 ' \ ! ' D SECT \ 1lN \ , \ \ o ' ,\ i\ `� ` \ \ ` STA 33+5� END EC -2, LININ \ \ \:: �\ \ \ \ 1 \ / \ ` S$p BEGIN EC -3, TYPE A LINING .. I \ i ° \ : \ NEW GR -2 \ I I I I � ) ' ' � � � � � � EX 9 I I I I i I I I \ '' � � \ E• \27 i \ \, \ SUARDRAgL \ I I ( I I I I I / \ r�d oak \ \ i / ` \ \ iseech E 24" Ex. 9" \ \ \ \::1.. , \ ` \ I I I I I I I I I 1 \ \ calpa dblP as STA 1+25 xi ra _. NEW 15" HDPE STORM PIPE I I I I I I I I I I I (I \ \ \ \ • // X �\ \ \ \ :: :: , \ \ \ 47.92 LF @ 2.09%in I I I I I I I I I I I / / ( r 2' a i p': ' _ Ex. i \ A \ \ INCLUDING END SECTIONS I ( I I I L I I I I I I / / in 9 5 Ex B 6� Ex.' Q~� v \\ \ o \ .. \ \ \ \ / f rked dog d \ \\: \ \ Ex . grass INV IN=702.00 I I I I I / / / E 1 p sic!V ti \ \ g INV OUT=701.00 I I I ( i I I I / // ` dbl.. g o \ / / /inv off 6 4 5 i .� � c,�estnut�k c,, . \ �\ m \ \ �• \ ..... \ \ \ \ OUTLET PROTECTION I I I I I Exi tin Li y P nd I ( I / / / / / E 1 ` , \�.B.R • v V w'' \ \ joi \ \\ \ \ . X \„ \ :::� `� \ \ STA 22+14 I I I I I I I I I I I / / ( (/ 1 \ ::\ \ white \ \ \_� \ \ o \ Idea Lo / \ NEW 15" HDPE STORM PIPE I I I I I I I I I I I I I I I I I I I / // \ I' II i :. 53.66 LF @ 7.63/ \ wEx. 3� INCLUDING END SECTIONS I I I I I I I I I STA 1 +36/.5 35+30.13 \ ` e o NEW DPE �f0 PIP \ INV IN=700.50 I I I I I I I I � \ T\B . \ INV OUT=696.50 I I 54 LF @ 4 1% \ I \ x . ■ \ 1 ♦ OUTLET PROTECTION IN LUDI�G Ef�D S CTiO T & T IO -F _ \ 611 \ �P1EW GR-� / \ \ NEV� STOP IK V IN 667M 1 ` \ \ EN SECT ION' x grass \ \SIGN (SEE DETAILS G TABLE) A : h� �\ CNV OUfi=664/.50 1 coo. \ \ \ \ .\:.. _ � \ \ \ � \ \ \ E� 9" \ /OUTLET PROTECT Ex. r- as Ex. telephone pedestal / (SEE ETAI S TA L \ \ \ \ 1 \ o \ Nb( GR -2 \ USE EC -2, LINING \ \ \ \db1 rdbud NEW GR -9 p \ \ \ \ I \ \ GUARDRAIL \ CD \ \ \ \ . T.B`.RR END SECTION / \ \ \ Ex. \ \ � BETWEEN CONN TOR Ex . 36 " \ \ :: ::::\: \ \ \ I \ \ \ ROADS ash \ \ o \ o T .B \ ( ° / ° \\ .kip \ \ \ \ \ tea ak \ \ 690 \ / \ \ T .�. t . Ole' Ex\ 12 " \ \ \ \ \ - - - \ / Ex. 1�" \ \ \30" hi or \ \ \ o f \ \ Ex \ Ex. oc ap le \ \ \ \ \ \ / \ dogw d \ \ TOEx. 36" \ �: .. cab wood \ \ Ex. 48� \ hem #ock \ \ \ \ d I 1 24 \ stump - o\ white oaks \ \ \ \\ P cry 1 \ w \ \ \ \ I tco�lar T.B.R. ` .. �Ex. 12" ' °� wit p' Ex. 36" 5': x/aut olive \ r ash � `� / /E \ \ � \ wat oa T.B.R. `'� ° \ `O �: :' x. g7' `� `�j2 `� ` ., //// / ' mo nt \ \ 1 . LSI I I \ \ \. TREES WITH WELLS. Ex. 6" ickor �9 x 1 \ Ex. 12" ' I \ I , \ \ PRIOR TO CONSTRUCTION AND AFTER I redbud SAVE / / / Ex. 39" \ \ 1 I I - ` a I I lar o \ \ a le _ , \ I \ \ ROAD STAKEOUT, THE CONTRACTOR T.B.R. Aj = :: 23, I I \ \ I o o d I . 5 : �` * \ \ \ SHALL CONTACT THE OWNER/ENGINEER . 27 1 \ \ I ' 1 \ \ \ \ \ THEY WILL CONTACT A LANDSCAPE \ Ex. 6" 9 \::::: \ h mlocl� I \ I { � � \ � i \ I I ESC. 4'1 , � � �:� :: \ \ ARCHITECT AND/OR ARBORIST TO \ \ ° ua ka ra \ DETERMINE IF A TREE WELL CAN redbud :\: _ : I I 1 T.B.R. �::: Ex. 1 " \ I I Ex . 2 ' \ I I 2 \� (::::::: \ PROTECT THE INTENDED TREES. \ orad ise � I I � Ex .\woods J o , . - \, SE EC -a TYPEg LINING I I i \ D= 4015 19 �x \ \.. \ B.R.\ \ \ 3�_ \ La , I AL T.q.R. \ I ` \ \ \ R= 100.00 �f:;:::;. Ex. 12\ \ T.B. I \ qx. 9p, tri�le p plari \ I \ � - � ,: NEW GR -2 L= 70.26 • cS \ :: ; :: ; ::: ; :� :::::.:. flog od \ - N \ Ex .112 6„ pope P lar I �, ♦ GUARDRAIL \ T = 36.65 nr Ex. 15' \ .:: ; \ ::::.. \ i\ .B . . T .B \ a n E�1D TION I quid a�h \ Ix ♦ \;i \ \ \ \ holl ...:. Ex. ` walnut -I T.B.R. \ quadalnu \ \ _ \ Ex. 36" \ _ sPrwe:;:; �< <�::::�::�::.::::...:.....:.::::::::k �::1:::::.. I �-.,... I T.B.F. USE EC-R,LINING I:::::::I:: _�:::: :_,.�1 ....:.: \;.......... civ :::: ,..:.. \:..:; O dead oak \ \ \ l(.., 1��;..;...,... (: :�.Q.:::;:;:: ( Ex. T.B.R. :: \ \ \ �2+ \ � :-:::::::. ; .. I :: � ::: :::. ley la � � •I /♦ � w \ 13,4 \ � :: .: ........:. :.:.:.:..:..:I;..:.;.; ;:::::1 ::::::.::. \ \ 1 ::::::::.::::::... re \ \ �` \; ... i .:(:.;.... �, EYP b N r \ \ triple I \ \ ��' \ \ \ \ \ \ \ \ ` STA 36+84 2f,�• \� hornbeam. \ \ \ \ \ \ \ NEW 24" RCP III STORM PIPE CONNECTOR 'A' topo is approx. \ T.B.R. Ex. 6" Ex. 24" R. \ \ \ \ \ \ \ ° \ dogwood red oak Ex. 4" \ \ \ \Ex. 18� Ex. T.B.R. \ \ SAVE dbl hickory \ \ \ �eodarT. \ 1 \ \ dar NEW TREE WELL \ x .B 18 " \ TT..B R . \ L\x . 3" \ (SEE NOTE ON RIGHT) pine evergreen \ \ Ex. 12' T.B.R. dbl redbud FROM STA 16+95 TO STA 21+00 T.B.R. _ USE EC -3, TYPE A LINING \ 138.48 LF @ 9.32% INCLUDING END SECTIONS o\ \ \: �:::::: ; \: \► I \ _, - _ INV IN=648.50 Ex. 60' \ .::::\: t,. \ poplar / ra /•; INV OUT=635.60 \ \::.: \ \ / � � � OUTLET PROTECTION \ ( 23 9 \ 9'\ N� STOP, SIGN \ \\Q (SEE DETAILS iy TABLE) R so kora \ \ ....... _ .... \ \\ 126 T.B.R. fix. 12" I u \ ° , \. \ \\ \\ �s►�, \;;:...\ \ \\s \ \ : \ ::` : \ \ \ \• \ I STA 17+51.61 MATCHLINE - SEE SHEET C2.1 M DATE February 6, 2012 REVISIONS April 30, 2012 November 30, 2012 January 9. 2013 June 10, 2013 J O w Ov UZ Q� wW J J W W Z Q r� O SCALE 1'=30' p,L&��11 TH op pj 0 2, BRIAN P. SMITH CERTIFICATE No. 14591 w� ��ss10NAL E��ti ZIAN P. SMITH, PE VIL ENGINEERING, INC. My @W= 9MUN rE Dmffl - Lao FLURN9 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embargmail.com 09-011 00 DWG. NAME Miller School 2.pro SHEET C2.2 ROAD PROFILE STATION 10+00 TO 18+50 .., K 40.0 LC 200.00 � Ld coo � 1'O o. II w ow II V U2: ap <roo, LU - w J W O� G ��� II W W z o. w / g Mu 0 n II STA 18+36.5 II / N M NEW 15' HDP STORM PIPE g°° �i,w 54.19LF04. 196 a $ + II INCLUDING E D SECTIONS / O ^ u INV IN=667. 650 g � o a '000 INV OUT=664 X50 LO 1.0 � n r - NEW GRADE c�i w + STA 16+95 ^ ° NEW 15' HDPE STORM PIPE + 5 67.69 LF 0 15.5196 Ex, grade a w INCLUDING END SECTIONS INV IN=655.50 w INV OUT=645.00 640 go v / %0'.09w II �? meq, a $c,� tW �. a W 169. 8' VC / v 150.00' VC LOW PT Sta 10+50,07 ^ v J C 150.00 0 LOW PT E LEV 617.28 �� g U w K 17.0 + ,o LC 169.98 ^ °° �/ CO CO ON 5W / S o� .Go orCt .10 CO_ }+ O� O� �� II II II iv- U 3 W J___ �/ 9 f w LU aw O w � 620 J N u Q }- // U � vJ w 200 N OEM . 8'i A,1 N II g� iri�iw ap n II gN O •tom Z o W LO 77 ww II w STA 10+40.43 I_ NEW 48' x 48' BOX CULVERT 96 LF 0 1.41 % 21.60' INV IN=605.00 Miller School Road INV OUT=604.04 St. Rt. 635 EP EP 10+00 11+00 12+00 13+00 14+00 15+00 16+00 17+00 18+00 U LU LU w W W Z J DATE February 6, 2012 REVISIONS April 30, 2012 November 30, 2012 J O ow V U2: Cn <roo, w J W J G W W z SCALE HORIZ: 1'=30' VERT: 1'=5' off` 1'Nj,T H 0p Lt Gz BRIAN P. SMITH a CERTIFICATE No. ,,t 14591 w� O r0If L BRIAN P. SMITH, PE CIVIL ENGINEERING, INC, C OO M ° E 9009 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embarqmail.com JOB NUMBER 00 it DWG. NAME Miller School 2.pro SHEET L—C3,0 CV) U LU LU W w W W Z J CQ G DATE February 6, 2012 REVISIONS April 30, 2012 November 30, 2012 J 0 O O w V Uz C� Cn < 00 Ce Z J J G 3: L1.J W z H SCALE HORIZ: 1'=30' VERT: 1'=5' p,LTH op L,t o � BRIAN P. SMITH y CERTIFICATE No. BRIAN P. SMITH, PE CIVIL ENGINEERING, INC. MUMPMPORH %MM 000H o L MD paaif 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embargmail.com weNI-, DWG. NAME Miller School 2.pro SHEEP C3. 1 0 J C� 00 Q� �O DLf) O�ry SCALE HORIZ: 1'=30' VERT: 1'=5' p,LTH op L,t o � BRIAN P. SMITH y CERTIFICATE No. BRIAN P. SMITH, PE CIVIL ENGINEERING, INC. MUMPMPORH %MM 000H o L MD paaif 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embargmail.com weNI-, DWG. NAME Miller School 2.pro SHEEP C3. 1 U 17W C0 W W W J DATE February 6, 2012 REVISIONS April 30, 2012 November 30, 2012 0 LO J CIO LL Q� 00 0 LO0 CNC SCALE HORIZ: 1'=30' VERT: 1'=5' pj,TH of Gf o � BRIAN P. SMITH a CERTIFICATE No. X06 1�1 �� o ,�w ��s`51I0NAL Elul IAN P. SMITH, PE 'IL ENGINEERING, INC, GOLF COURSE DESIGN DESIGN LAND PLANNING 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embargmail.com JOB NUMBER X: $ 9 DWG. NAME Miler School 2.pro SHEET ROAD PROFILE STATION 27+50 TO 36+50 CENTER OF DROPOFF I STA 28+61.89 720 ELEV=706.65 C0 8� CV)� i i i I I + zg 00 $a II II II ♦1��,, N a N OLD MAIN Z5� II a W o� ! $ co 710 Porte Cochere Uj C0 II v $ U N 0.00% 'w C? o�N � 'll 14 M 11 C N W US�nw $•o $ p +O O �p +O _ II $ p OO vLQ W cM �O53n 11 � co � N N 11 Ng k � p1 -4 h N cy N ^ �� N w WWW W �j 60.00' VC a. W + p I) J ° $ v W II a n 70.00 VC HI PT Sta 28+98.13 w 'o M r �4.Q0 w K13.4 LC 70. HI PT ELEV 706.65 K W CO %0—\ $ STA NEW 15' HDPE STORM PIPE 19.1 LC 60.00 �„ `� �" 9 °' $ 57.23 LF @ 7.86% i10 c °ND690 o Itou � INCLUDING END SECTIONS v 7 ,oto u a w INV IN=703.50 w0 N •o ° INV OUT=699.00 C" � a ! 200.00' VC Uu $ ^ \ NEW GRADE LbwPT Sta 37+16.77 K 159.5 0 STA 30+86 LC 200.00 � °' l LOW PT ELEV 661.58 7.0 NEW 15' HDPE STORM PIPE 63 LF 0 12.7% + o, 'Q ch Ex. grade 204 .00 124 g3 v � 680 INCLUDING END SECTIONS m 0 w , 204.00 VC INV OUT=691.00 W ^ $ .p LU $ U 150.00' VC - 'O a w K 26.8 u LC 150.00 v g 670 u' n $ V f*-. + i0 CID t W 'O U II 0% W -17 co 660 uriw $ U? W co z }v G� W =, = �2 \�p II y a. w 650 640 i i 28 29 30 31 32 33'00 34 DATE February 6, 2012 REVISIONS April 30, 2012 November 30, 2012 0 LO J CIO LL Q� 00 0 LO0 CNC SCALE HORIZ: 1'=30' VERT: 1'=5' pj,TH of Gf o � BRIAN P. SMITH a CERTIFICATE No. X06 1�1 �� o ,�w ��s`51I0NAL Elul IAN P. SMITH, PE 'IL ENGINEERING, INC, GOLF COURSE DESIGN DESIGN LAND PLANNING 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embargmail.com JOB NUMBER X: $ 9 DWG. NAME Miler School 2.pro SHEET ROAD PROFILE STATION 36¢50 TO 38¢04.07 CONNECTOR STATION 1+00 'A' - TO PROFILE 2+66.00 CONNECTOR 'B' STATION 5¢00 - TO PROFILE 6¢64.68 UZ Cf) 01% 0: C6 + II $v 204. ' VC 680 OD �0 °^a N 'o ^ � O' o N670 II II M $ II Q a w 2.00 % NEW GRADE 660 g 0 Ex. grade gg� � ZO co II �II +II CO?? tW pLUL ti w 650 STA 36+84 720 0 tl�� CV g 720 ' 50.00' VC %0 K 8.3 LO n �j LC 50.00 co w o^ jw g ° NEW GRADE II _._._ — 710 as Lu 710 00 2,00 $0 N Q ^ 11 Ex. grade / Lug^ i � p n M 0- s � -j 8LU 0 II W UU 700 n ' r $ II > � 700 o,$ nn .260. 'VC w G �� a Ew K 8. _ ? LC 40. STA 5+28 NEW 15' HDPE STORM PIPE 52.29 LF @ 1.91 % INCLUDING END SECTIONS INV IN=703.00 INV OUT=702.00 5+00 6+00 7+00 NEW 18' RCP III STORM PIPE 138.48 LF 0 9.32% INCLUDING END SECTIONS 640 INV IN=648.50 INV OUT=635.60 37 38-00 DATE February 6, 2012 REVISIONS April 30, 2012 November 30, 2012 J O 80 W LL 720 UZ Cf) 01% 0: C6 + II $v 720 wW J 0H 5 ^ D11 G C 40.00' VC NEW GRADE --\ W z 9 H $co 01) K=5.0 $ co u' 09 + Ex. grade a S $7 LU 710 z 710 / ddb co � $ 04 R N II ^ 0 �y Cj 11 N� +" ±�� = w �w U?? c^° a W N II ? 700 n W 700 o $ Cs 1 'V ff n K=6.6 W C� F?L STA 1+23 NEW 15' HDPE STORM PIPE 47.92 LF @ 2.09% INCLUDING END SECTIONS INV IN=702.00 INV OUT=701.00 1+00 2+00 3+00 720 0 tl�� CV g 720 ' 50.00' VC %0 K 8.3 LO n �j LC 50.00 co w o^ jw g ° NEW GRADE II _._._ — 710 as Lu 710 00 2,00 $0 N Q ^ 11 Ex. grade / Lug^ i � p n M 0- s � -j 8LU 0 II W UU 700 n ' r $ II > � 700 o,$ nn .260. 'VC w G �� a Ew K 8. _ ? LC 40. STA 5+28 NEW 15' HDPE STORM PIPE 52.29 LF @ 1.91 % INCLUDING END SECTIONS INV IN=703.00 INV OUT=702.00 5+00 6+00 7+00 NEW 18' RCP III STORM PIPE 138.48 LF 0 9.32% INCLUDING END SECTIONS 640 INV IN=648.50 INV OUT=635.60 37 38-00 DATE February 6, 2012 REVISIONS April 30, 2012 November 30, 2012 J O O W LL V UZ Cf) 01% W wW J 0H J G C W W z H Cn W J LL 0 Cf) � W 0H 0 C SCALE HORIZ: 1'=30' VERT: 1'=5' BRIAN 1P. SMITH, PE CIVIL ENGINEERING, INC. 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embarqmail.com O. NUMBER 09-011-00 DWG. NAME Miller School 2.pro SHEET C3.3 DATE February 6, 2012 REVISIONS April 30, 2012 November 30, 2012 W J 0 LL C CL SCALE HORIZ: 1'=10' VERT: 1'=5' pT,TH of Lj o BRIAN P. SMRFi y CERTIFICATE No. •a� 14591 �lSs-tONAL E��l PIAN P. SMITH, PE VIL ENGINEERING, INC, rE =0 o LMD PLaRN 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embargmail.com JOB NUMBER 09-011-00 DWG. NAME Miller School 2.pro SHEET C4 ■ DATE February 6, 2012 REVISIONS April 30, 2012 November 30, 2012 April 15, 2013 J O OU w oz Cn < J WW J W LJJ z H SCALE HORIZ: 1'=10' VERT: 1'=5' p,I,TH 0p Gr o x BRIAN P. SMITH a CERTIFICATE No. .off 14591 w� OA Sl � BRIAN P. SMITH, PE CIVIL ENGINEERING, INC. Mr =W 002K ofm 009H - LaD pLaRN 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embargmail.com JOB NUMBER 09-011-00 DWG. NAME Miller School 2.pro SHEET t --C4, I--- \.... i-- ...... \ .. ... V, ....... ...... ...... ............... . . . ... .. . ,F / �..... _..� ..........�.... /../... r�......... ..... :eAo ... . L.. ......... ......... .... ..... .. . ....... ........ ....... .... ..... .... ./.......-......... :....:.j.: j .;.: .'.'�- .. ................. ' ::::�:-.T.:.....�:.... '......... _ .. _ �. •"� •".'.I /'.'/.''/'•''.'. .. �•. •. •'_moi._•. . . . . ... .rr".' . .'.'.'.'.'.'.'•'•�_�_ '�-�'•--•-�•'• 2... .... . ........ .......... N , � 40\ I/ / / / S � � c I I00 / / / - = I �I LD � / � � \ / � ... ---� ,' �•,•.�.• '-� ...'�•...• .\.\.\ � .,.-. / 696 / / � -� 5 � � I ` - - - - - - - - � I \ ��N 01 ....y•�...��.\..�.. �..\ ....\• \/ \ \� / �6�6 /' / / \ sD ism \ \ \ \ \ \ ;.. .\ . \ ... .....\..' '�.' \ i CRITICAL SLOP \ / /� / ,-- ' , / \ .... ...'�.. `�. .. \ / ES AS DEFINED .. '.'.'.'.:.. .. • ' ... ..�.:'�'.. \ / / / BY ALBEMARLE COUNTY \..'�..... .... \'.'1�... \ 25% (4H TO 1V) OR STEEPER / ' . '.. � ' ' ' ' \ '� ' ' '� f �' ' \ AREA OF TMP 72-32=1,047 ACRES ... ':�.'�.'.'.'�.'.'.'�".'.mss.'.'.'."�'.'.'.'�'.'.�.'.'.. '.'�;. � .'.' � '. '.'�'. .J AREA OF CRITICAL SLOPES ON PARCEL: UNKNOWN / ........ oo..\ .... ......... .. . �... \ PERCENTAGE 0 \'\ '� ' ' ' �' AREA OF CR F CRITICAL SLOPES ON PROPERTY: UNKNOWN \ . ... ,.... . ... .�.'� .... �.' �.. , \ CRITICAL SLOPES DISTURBED: 1.24 ACRES ,�, \•\ • • • • • _ ••.•�••`• • • • • •••\••••�.••••�•--- • \ • • • • • \ PERCENTAGE OF CRITICAL SLOPES DISTURBED ON PROPERTY j0.1% �,; . ;> \\' til \ . .\ . \ . .\\ /000 �• 10 \. �. .1. . '�. ..-. \ —� / _ --- --- ' 4 1 65r i �, / TEMPORARY/SEDIMENT TRAP '/ �60q. ..\ . \ ��v. \ \ - 652 ,'`; TE�R�QRRARY SEDIMENT • • • • 08.. .. \ \ ♦ n TRAP / _ T,. . ., .__ \ \ 6�6 \ ` �� • / / o \ ,/, / Cri�ical sl es a designat by . . . + . . . �— /� ty of bema e GIS m (n Lo / / / TEMPORARY SEDIMENT TRAP, '' DOLDURBE CRI ICA SLOPS OUT INE / t / /� P '�`' o- /1ACRES ` / REA=1.2 ACRE I / �_ .� .. yam...:- .............._ --'.'.'.'.'.... --� / ... / _ _ J-.- '.......... l:'. ... \ l l / / -7 ,-.............--..-...........................' /z z\ DATE February 6, 2012 REVISIONS April 30, 2012 November 30, 2012 SCALE 1'=50' W D. 0 J F -- C U ALTH of L.t 1 z' BRIAN P. SMITH CERTIFICATE No. 14591 a � ��ss1�NAL E��l BRIAN P. SMITH, PE CIVIL ENGINEERING, INC. ONE E OMEN - (UD FLMZF@ 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embargmail.com JOB NUMBER 09-011-00 DWG. NAME Miller School 2.pro SHEEP C5s0 DATE February 6, 2012 REVISIONS April 30, 2012 J O OV W Uz co < ww J J G W W z mrH SCALE 1'=50' 4-q* Nj,TH op Lj o� �x BRIAN P. SMITH y CERTIFICATE No. .off 14581 o ,�v SSI0NAL Vl � BRIAN P. SMITH, PE CIVIL ENGINEERING, INC. NUMMEMN 0 utaD ma(mD ° s aim 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embarqmail.com DWG. NAME Miller School 2.pro SHEET C6,0 Ex. I *,ear fl� plain as d4signated by the County -- s cc / of Alb marls GIS�ii ceps. E ,r I \ Ex. 100- ear floodplain as desi n ed -b the County I � � E�dsling open field � \ / .� , Y P 9 � Y NEW MiTiGATION1 AREA 1 -� \�\ / of Albemarle GIS maps. J 1 Hatched area (� prox. 62.5 wide x 1,680' long \\ \ t \ - \ Hatched =2.41 ACRES � /p � \\\ Tbee sstream buffer along the Mechum s Iver is 100 -feet from, I ' \ / the banks of v�aterway or the limits o tt�ie floodplain, \ � whichever Is realer.` 10 Mechums River 7 Existing open field t \� iWEW MITIGATIOt4AREA 2 Hatched area approo.. .5' wide x 1,659' long ' / % =2.38 acres �' r" Total area planted -4.79 � res \ •/ -- Ex. 100- -" � ( _ year fl�dplain as designated by the County _ J r - - - \ \�\ -�. ``� _ of Albemarle GIS mos -4 \\ 1 I, �I� MITIGATION CALCULATIONS: Total limits of disturbance within the stream buffer=104x302 Sq. Ft. Mitigation area required= 2 x 104,302 Sq. Ft.=208,604 Sq. Ft.=4.79 acres From the Design Manual using Option l.c. For every acre, plant 600 hardwood and/or pine seedlings on approximately 8' x 8' centers with tree tubes and mats. Number of seedlings required=4.79 x 600=2,873 hardwood and/or pine seedlings The type of seedlings shall be chosen from the CBLAD manual. MAINTENANCE AND PLANTING SCHEDULE: 1. The plants shall be maintained in a healthy condition and replaced within the first year if not. 2. The planting schedule Is anticipated to occur during the spring of 2012. Appendfx C - Planting Details Appendix C - Plaritirg DetaiIs Appendix C -Planting Details FARE ROOT SEEDLINGS AND YEAR TRANSPLANTS (Taken from Section VII of Ae Chesapeake Bay Raoarian Handbook. Palone, Roxanne S, and Albert H Codd, eds.1998) > � Taken from A >✓'ase Srtdy of The Diculf Rust Riparian Project: Generally, seedlings andyearnnsplants shouldhavethe following chameteeristicswhenplanted:3' AGuide for.RipariaiiRestoratrotiPmjects. (December 1998) JudithA.Okay. Virginia 1. They should be at the some level that they were grown atthe nursery. Look for the root collar to detesminedeptl. w` `� ..\"`'�L� °'-x �° ;;,�',+�-,. •i}}1 'l\�'�`.�., �'• ���•'` �, De artm ent of Fores �APP endix Ca P16. to doubled 2. The roots should be straight doen or spread out but not "curved, ben or " "J" U„ or sha e form a �ir�rs"n°c' �\ 3. The plant hbefillml tampedinremovin any air octetsaroundtheroots-, �I Inz�t.ert li°t4°at arigglr �Wt�t"p �i 3. insert bar 2 firs't1es 1.rietatli ag Tf7CG i'i'titiCtOf'!► 4. The plant should beimanuprightposition, evenwiththe ground, notinahole oronamound ehnwn and piph fnrwarti Pgat ",am yourself ofsoil. to upright pxtitirval oftx ling- ]i The iftmd old a(O'daaI tr 04 tar GI }fun* ttw '"audio dSl'" first at ftaaml. majac 1 i lvta der rake M wt Installing Protective Net RPaa:Ic RC1 /a:Pa.#xat e"l1P1 YCet! " '�'��',ySTw, t, .' k Y. 1. t e '-i S; Y:•e i . a °'�.Cr; °� k ,,,"•`" \ .' 1, &�,lrzrn mem }tt. s;rt6irrtsa'td';.apet^act+�s.5 c2'ADS t'at9ixrutm�1r'J� ��S �a9�11.1SCdRl exit •:tL1l'� ir1: C35yz+. ro.. *i' tie "i't' '`"tl'y14'L _,•.'+q:'h n.'*. w, , 4 .'yy. ''5. , ;,' is '4'L. ll, ' .�N" w ` hainm }�azryr aRatsr asacars r1#hPsr. .r �,D ,.,, x a'Y `',`,. . A"ti\ '.`+w'•::�%' "R a. .'a,. \,•,spa ' \ ° �`^i,. s �iw L �,ftd' � AWMA smd d" tWa Of 0. how s,tw • - 3- ra urr Tate ratz t tr*s n �.vc Is mwtas w {t 3a dMPIA Lb L"S6' beds YD s"" r y r' 1 \ '"°' r '1 �' i �:.r. "+t +.'%, '1 h�" ' w ` ` a` - a. •:• �;. �.�"l roy;;;*.,;��, .-.. �V,a, L: �\�'e�.'i y ` ; ;' ,aa;`ti e : �w`iy • :`. *, _, ,�w..4\s<*t�-A'. ':'i\,'�`,ti;', '"`it \ w •, � v \, �^�: ti w �\\'''�'` a' a. '41 i'. y�, '14.1�iY. \`a+\� � � i' 3dL gt w tt7A I" or, the FA:"S. tlmt Moa rat a4 -y4 r �°• `e�+ Pa •c �'•,'�.°i s!',s•"., \tom v",�'" \rti\"."'-.'., � ti1L4:ti i•o'4'v,i �:. L . �sy�`sae''\' \',• �`*\1, S�\i.°+'1�M1.'4'a1°t i tw rot t +9test at as not �dS satgw met. $�CC }k".tlt tii1 '. f ':�7Piwi. 'G "W "a t; 1 4. Pull iiriTMttl � of bar 1.ik.8t1 118.RelIC t1S t'la1t fvxtwa+d to firm fj, ltsttettt 2tkt1:lva� gima+m� tNW t • . �,\'� ,v � �\\\ � �',w• �L La'*\;`'e\ M1, �a°\w, L�. �, '+q'e ♦* .:_�� \`"•�\ "4ti\ }`^'. .�_ \ \`w^ "L `� T, � ',\ a \'�,y- \ toward year if to flrta daoil gst hattc an 1 f rift, ^. Otii fit top ttf M,5tx. _ ,-� + � � i'� .•,, ♦ F frtmv taut hole. t.. ZWP . t, a tit ire AtP tt iP tfta czti tr adar:►ot �s+tlw. m�' rt,�' r P.mx ;v b?eud •raa'o-rp a1 ims th kott harite�vrtew t it acct exon is , t.R..rtW cl�cita>r e,�'19� t6 E.y�le! t3ee #bmcaat or('atut aat, ,.°\'"t�\`q\ \• -°:'' \,,\,\ '*" y\"\ '�``v..\\;•..,. '^ �• .� "��L.' �, 4L \w `''\ \r\4, .yrs@ '1••w 1 rr'm'q" y�}' hXt,,,:- 9ryta7.i dt?' iq� BAR tbt' ffiC �4 futtltt t�a't+ddLt M' :'F F'LL".f L^..� ikfi '": R'*P»n i9ec :S,upCmYttta2 t ?y'•:�.\i" '. �. w\•: �.\.'w `!\' a4 \ v "'•.''`...��'a.',`' i t t r' x"�',,'" ^' , ';, the Sepperrltlic Si ' 1iwo ttr+r !l elf `4 S:'�9 fCt tit it%L"RQS PC L`e`i PP"_l Aft 100 t���nc 1, rive grub hoe into 2 Place seedling against � rill bottom of hale p_a &I,,',ti -��'-��.� �^ � er'1.,• _ ��"�`,' x`.w,'��,, ,.5�.::y •t:•x � x^�;',",:t�`.�',�'.''�"��`-��\ ;,,��k'. � owl it n tft t.P1tt evt '�' �ifx!' iM rA'NiI .i r �q.n d�,ttppggfift hander 81•":I'`$Dgh�� rnile at �iACi pack #&.Fki3 °�ii,dd rack. correct depth.est roots � '"� f .• y\°'°ti`\w;\ �; �,++���` '\\�'% .`••'jti• \'�, ,^�"' � �\e ;�, '.5��<:';."" '.y"'.a\w\�,`'"yq �.`yr°�e�,:` �\�'� tie. 7RMti'�t54 #CQ e *wr > `:' `. t:',`.1t;t ,,4 4.S ,y'Si, 4�• ..}y�\.Lk,.,w.,*.,,L.\'��-\•y�"`Z`'y'�`. ,, \\\ a � ..,..;!: ' w, � . -'. \1 •.4� •�, \"4 'L '.•t•.•'°4tieSx\\'i L.\�+y .1': 4'x.•'14t't', i ^s a. \� w • , a `„^.`. a�. +. ♦ ^�, °`.. ,. �. �� �L�*y"\\%�,.\a.�'iy.'•�• 'ti Ali �"tifr$� It,*tilt No9.1. +r,,..,e,ty",;.','ti'ti'+'Sy�WL. :w::41"S 4`s1 ,.. -; :+.'ta\h••'."�. .L'.'.v'k \'4`a, i't. `.`;; '..`'L'+.1L.h\''t a'a 1'+.♦.�'"t^**1°.a` `1, 'Pwh fclrwam a. f111t in IDA i•.ole 19. Firm w4l ihrta pull backward by xtA-roping mead attII as to f31@ hole. with heA. with the fsxt ' \ vk Vigo re ry - *, Slit Nirthod. St,pv in !hr lit t(,!;Yrttr«i±icrtl.) w -it s'i'dle -lit tneth-d of riantiteg s"iflinp in sandN soli. iSketch �'yzl°�gw�yr,,V�y'4y,'�i '�♦4 y'i '!�,+y, �..,h.,`rl9Y+, y,`q� \`450'4,h1.0Y��'xs,•'L\\, �1v~�. S 4, Fmi5b filling in 5. Firm around ovvil and wk, Seedling with it With heeL the rMt Vigsre, 7 - 8. 'lite Sidi -11i4t Nl emelt of PlAntlrtg. (Sketch Adapted from if..s. rartit :semis tt and "lite Prae'- il�^e:C„�liyirnlrnrc.Srnittt. Riparian Buffers Guidance Manual Riparian Buffers Guidance Manual Riparian Buffers Guidance Manual G2 C 3 C 4 DATE Nov. 18, 2009 REVISIONS Jan. 11, 2010 July 7, 2010 April 13, 2011 February 6, 2012 April 30, 2012 J O W 00 UZ co < ry J Ljj J G LJ.1 W z SCALE 1'=100' .J o�,t,NtiTH t7F Gt O BRIAN P. SMMr I CERTIFICATE No. 14591 w� OV 4 eSSIDNAL N P. SMiTH, PE ENGINEERING, INC. GOLF COWRSE DESIGN DESIGN • LAND PLANNING 4835 Three Chopt Road Troy, 'VA 22974 434.296.3644 bpspe@embargmail.com JOB NUMBER 1 r Me DWG. NAME Miler School 2.pro SHEEP C6. 1 LIST OF SOIL TYPES 27B ELIOAK LOAM, 2-7% SLOPES 27C ELIOAK LOAM, 7-15% SLOPES 27D ELIOAK LOAM, 15-25% SLOPES 34E GLENELG LOAM, 25-45% SLOPES \\\\ TEMP. SILT TRAP 01 Scale: 1'=20' T SLOPE WEIR 638 +6'4.2 62 030 -6-12 612 610 8 1 'Ril--615 618 1 'I \ —�— STA 10+00 TO STA 17+00 USE EC -2 SOIL STABILIZATION MATTING FROM THE ROAD SHOULDER TO THE LIMITS OF DISTURBANCE THE GRADING FOR THE TRAVELWAY FROM STA 11+50 TO STA 17+00 CANNOT BEGIN UNTIL THE CULVERT IS INSTALLED AND SEDIMENT TRAP #1 IS GRADED. \� > ai > rn 0 LIMITS OF DISTURBANCE CD TEMP. SILT TRAP 01 \\ \♦ \ \ \ \ \ co (SEE ENLARGEMENT ABOVE IP AND DETAILS ON C7.2) x CHANGE GRADING ON CUT SLOPE FROM 2/1 TO 1.5/1. 2 TO 1 SL \\ \ \ \,, \1�i 1- 0 E S Ex. 4" plastic pipe inv. out=660.5 DNNECT TO NEW DITCH Existing rip-rap— T.B.R. 27C / ce + 27D Ex. silt fence` T.B.R. / // j/ // CHANGE GRADING ON CUT` SLOPE FROM 1.5/ 1 TO 2/ 1. CONTRACTOR TO CONSTRUCT A/�' PERMANENT DIVERSION DITCHABOVE THE 1,5 TO 1 SLOPES.i Ex. baseball field / 1.5 TO 1 SLOPE /// / / / / � / �/� ,•eat B/M i i'// / / / , LIMITS OF DISTURBANCE ' ' ' / /' 6 O TEY P. $JLT TRAP�`$�� • i/ / W ' / (§EE DETAILS/O . //'z TO 1/SLOPE/ //� // $F 34E, 5 • EVERY 100 LF = ; ' ' i - ' �' /' o ' '`�' /' '' / ,'' /'' /l i1V1wl < � / O 5f�, qb CD0-, vo PS 8c nmu g1p - ol -.-_ R -- goo dpow / LIMITS OF DISTURBANCE \ \ \\\`N11 \, i aoao ��, \•�\ \ \\\\ �� 640'— ------ — _ "'' /' '' SEE NARRATIVE \\ ��l ��., / \\` _ — — — _ _ _ — - — — '/ f/ INA: P IC)NI MUST REMAIN IN PLACE DIRECTING O CE PHASE 2 12' x 70' min. ,AFF TO TRAP 2 UNTIL THE CONTRACTOR 620 //,/I READY TO APPLY ASPHALT PAVING TO THE /MAVELWAY. AS AN ALTERNATIVE, A TEMPORARY CULVERT CAN BE USED. n ti ell SICT TRAP '—'-- ,--�1 SEE DETAILS ON C _ _ { / III ' \� "��-�J ` - -- � _ = -='• -�_ - - = = = ; • � _ -- � �° �"" L I \ ° c' SF 2 T 1 SLOPE TS & MU \ T �}��} I\ \ 1\ C- 1 SF °a I o \ \ $F N U I E E ~ } I (D 34E Iw I +' 11 I l I I� I I m l x I I Iw >- I X ; 3 SF SOILS DELINEATION LINE (TYPICAL) DATE February 6, 2012 REVISIONS March 30, 2012 April 30, 2012 November 30, 2012 J O OV W L0 U Z J � 0 H O wW J H J Un W Wz z o ll`� SCALE 1'=30' Ar4o p LTH 0A, pt O L) BRIAN P. SMITH y CERTIFICATE No. 14591 ��SSICNAL E��l BRIAN P. SMITH, PE CIVIL ENGINEERING, INC. %MM DORM - LUD ° s MEMI 4835 Three Chopt Road Troy, VA 22974 434.296.3644 I bpspe@embargmail.com JOB NUMBER 09-011-00 DWG. NAME Miller School 2.pro SHEET C� g° L0 J � 0 H O H 00 Un cn o ll`� SCALE 1'=30' Ar4o p LTH 0A, pt O L) BRIAN P. SMITH y CERTIFICATE No. 14591 ��SSICNAL E��l BRIAN P. SMITH, PE CIVIL ENGINEERING, INC. %MM DORM - LUD ° s MEMI 4835 Three Chopt Road Troy, VA 22974 434.296.3644 I bpspe@embargmail.com JOB NUMBER 09-011-00 DWG. NAME Miller School 2.pro SHEET C� DATE February 6, 2012 REVISIONS April 30, 2012 November 30, 2012 April 15, 2013 SCALE 1'=30' o�,$ALTH op k z BRIAN P. SMITH y CERTIFICATE No. 14581 o, ��SSIONAL PIAN P. SMITH, PE ;IVIL ENGINEERING, INC. NO MW PIENK in DmaR o Wo PLMNEQ 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embargmail.com O. NUMBER 09-011-00 DWG. NAME Miller School 2.pro SHEET C7z blA 1/+01.01 MATCHLINE - SEE SHEET C7.0 Sediment Trap 41 Design drainage area (acres) weir length (ft)(6 x DA): 3.9 638.0 trap volumes: 622.0 115.9 bottom trap dimensions: Elevation (ft) Areas Volume (cv) This trap is smaller than normally 608.0 592 3.0 required by regulations. Because of this, 612.0 1,060 122.4 it will require more monitoring 615.0 2,112 298.6 and maintenance. wet storage: wet storage required (cy)(67 x DA): 259.3 bottom of stone weir (ft) 612.0 wet storage provided at this elevation (cy) 122.4 slope of wet storage sides 1 to 1 dry storage dry storage required (cy)(67 x DA): crest of stone weir (ft) dry storage provided at this elevation (cy) slope of dry storage sides weir length (ft) modified: bottom of trap elevation (fl) 259.3 bottom trap dimensions: 615.0 top of dam elevation (ft): 176.2 top width of dam (ft): W 2 to 1 top trap dimensions: 6.0 608.0 free -form, 616.0 3.0 freeform The contractor shall install and maintain a safety fence around each silt trap with excavated storage until such time the trap is removed from service. Sediment Trap #2 Design drainage area (acres) (<3) 1.7 trap volumes: Elevation (ft) Areas Volume (cy) 622.0 480 626.0 1,536 149.3 628.0 2,720 307.0 wet storage: wet storage required (cy)(67 x DA): 115.9 bottom of stone weir (ft) 626.0 wet storage provided at this elevation (cy) 149.3 slope of wet storage sides 1 to 1 dry storage dry storage required (cy)(67 x DA): crest of stone weir (ft) dry storage provided at this elevation (cy) slope of dry storage sides The contractor shall install and maintain a safety fence around each silt trap with excavated storage until such time the trap is removed from service. Sediment Trap 93 Design drainage area (acres) (<3) trap volumes: Elevation (ft) Area s 634.0 240 638.0 816 640.0 1,520 wet storage: wet storage required (cy)(67 x DA): bottom of stone weir (ft) wet storage provided at this elevation (cy) slope of wet storage sides dry storage dry storage required (cy)(67 x DA): crest of stone weir (ft) dry storage provided at this elevation (cy) slope of drystorage sides 1.1 Volume (cy) 78.2 164.7 73.7 weir length (ft)(6 x DA): 10.4 638.0 bottom of trap elevation (ft): 622.0 115.9 bottom trap dimensions: 4' x 120'', 628.0 top of dam elevation (ft): 629.0 157.6 top width of dam (fl): W 3.0 2 to 1 top trap dimensions: !20' x`136', The contractor shall install and maintain a safety fence around each silt trap with excavated storage until such time the trap is removed from service. Sediment Trap 93 Design drainage area (acres) (<3) trap volumes: Elevation (ft) Area s 634.0 240 638.0 816 640.0 1,520 wet storage: wet storage required (cy)(67 x DA): bottom of stone weir (ft) wet storage provided at this elevation (cy) slope of wet storage sides dry storage dry storage required (cy)(67 x DA): crest of stone weir (ft) dry storage provided at this elevation (cy) slope of drystorage sides 1.1 Volume (cy) 78.2 164.7 73.7 638.0 Sediment Trap #4 Design 78.2 1 to 1 Diameter Q2. 2 -yr TW2, 2 -yr tailwater depth weir length (ft)(6 x DA): 6.6 drainage area (acres) (<3) bottom of trap elevation (ft): 634.0„ 73.7 bottom trap dimensions: 4' x 60''', 640.0 top of dam elevation (ft): 641.0 86.5 top width of darn (ft): W 3.0: 2 to 1 top trap dimensions: 20'.x 76', The contractor shall install and maintain a safety fence around each silt trap with excavated storage until such time the trap is removed from service. DRY 5TORA6E - Al+A V= 2 2D2 NET 5TORA&E Oi�= EXGAVATED 5T0RA6E V,= A+A' xD� A2=WxL ° 0°0° °°°°° ? Hu 000.00 °° o °°°A,WxL D2 D 2\ A= W x L#3 STONE GLA55 I RIPRAP TYPICAL SEDIMENT TRAP SOIL EROSION & SEDIMENT CONTROL SYMBOLS NO. TITLE KEY SYMBOL 3.02 CONSTRUCTION ENTRANCE CE I 3.03 CONSTRUCTION ROAD STABILIZATION 3.05 SILT FENCE SF X_x__*--- X 3.07 INLET PROTECTION IP --- 3.08 CULVERT INLET PROTECTION CIP 3.09 TEMPORARY DIVERSION DIKE DD DD 3.11 TEMPORARY RIGHT OF WAY DIVERSION RWD 3.13 TEMPORARY SEDIMENT TRAP O 3.18 OUTLET PROTECTION OP 3.20 ROCK CHECK DAM CD ,.�� --t► �� 3.25 UTILITY STREAM CROSSING 3.30 TOPSOILING TO TO 3.31 TEMPORARY SEEDING O �---Q- 3.32 PERMANENT SEEDING O �-Q-- 3.35 MULCH MU �---�- 3.39 DUST CONTROL DC �---�- wet storage: wet storage required (cy)(67 x DA): 157.5 bottom of stone weir (ft) 637.5 'vet storage provided at this elevation (cy) 162.4 slope of wet storage sides Ito 1 dry storage dry storage required (cy)(67 x DA): crest of stone weir (ft) dry storage provided at this elevation (cy) slope of dry storage sides wet storage: wet storage required (cy)(67 x DA): bottom of stone weir (ft) wet storage provided at this elevation (cy) slope of wet storage sides weir length (ft)(6 x DA): 14.1 bottom of trap elevation (ft): 633.5 dry storage 157.5 bottom trap dimensions: I6' x 50''j dry storage required (cy)(67 x DA): 640.0 top of dam elevation (ft): 641.0 crest of stone weir (ft) 171.5 top width of dans (ft): W 3.0 dry storage provided at this elevation (cy) 2 to 1 top trap dimensions: 34` x 68' slope of dry storage sides 1.5 Volume (cy) 114.4 216.6 100.5 Sediment. Trap #5 Design Sediment Trap #4 Design 114.4 1 to 1 Diameter Q2. 2 -yr TW2, 2 -yr tailwater depth drainage area (acres) (<3) 9.0 drainage area (acres) (<3) bottom of trap elevation (ft): 2.4 trap volumes: bottom trap dimensions: trap volumes: 655.0 top of dam elevation (Et): Elevation (ft) Area s Elevation (ft) Areas Volume (cy) 649.0 500 633.5 800 3.75 653.0 1,044 637.5 1,392 162.4 655.0 1,716 640.0 2,312 333.9 13.75 Class I wet storage: wet storage required (cy)(67 x DA): 157.5 bottom of stone weir (ft) 637.5 'vet storage provided at this elevation (cy) 162.4 slope of wet storage sides Ito 1 dry storage dry storage required (cy)(67 x DA): crest of stone weir (ft) dry storage provided at this elevation (cy) slope of dry storage sides wet storage: wet storage required (cy)(67 x DA): bottom of stone weir (ft) wet storage provided at this elevation (cy) slope of wet storage sides weir length (ft)(6 x DA): 14.1 bottom of trap elevation (ft): 633.5 dry storage 157.5 bottom trap dimensions: I6' x 50''j dry storage required (cy)(67 x DA): 640.0 top of dam elevation (ft): 641.0 crest of stone weir (ft) 171.5 top width of dans (ft): W 3.0 dry storage provided at this elevation (cy) 2 to 1 top trap dimensions: 34` x 68' slope of dry storage sides 1.5 Volume (cy) 114.4 216.6 100.5 653.0 114.4 1 to 1 Diameter Q2. 2 -yr TW2, 2 -yr tailwater depth weir length (ft)(6 x DA): 9.0 La. Length of Apron bottom of trap elevation (ft): 649.0 100.5 bottom trap dimensions: 10' x 50' 655.0 top of dam elevation (Et): 656.0 102.2 top width of dam (ft): W 3.0 2 to 1 top trap dimensions: 26' x 66'' The total amount of disturbed area Is 6.92 acres GENERAL EROSION & SEDIMENT CONTROL NOTES 1. The plan approving authority must be notified one week prior to the pre -construction conference, one week prior to the commencement of land disturbing activity, and one week prior to the final inspection. 2. All erosion and sediment control measures will be constructed and maintained according to minimum standards and specifications of the Virginia Erosion and Sediment Control Handbook and Virginia Regulations VR 625-02-00 Erosion and Sediment Control Regulations. 3. All erosion and sediment control measures are to be placed prior to or as the first step in clearing. 4. A copy of the approved erosion and sediment control plan shall be maintained on the site at all times. 5. Prior to commencing land disturbing activities in areas other than indicated on these plans (including, but not limited to, off-site borrow or waste areas), the contractor shall submit a supplementary erosion control plan to the owner for review and approval by the plan approving authority. 6. The contractor is responsible for installation of any additional erosion control measures necessary to prevent erosion and sedimentation as determined by the plan approving authority. 7. All disturbed areas are to drain to approved sediment control measures at all times during land disturbing activities and during site development until final stabilization is achieved. 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 effectiveness 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 waste areas are to be reclaimed within 7 days of completion per Zoning Ordinance section 5.1.28. 13. All inert materials shall be transported in compliance with section 13-301 of the Code of Albemarle. 14. Borrow, fill or waste activity involving industrial -type power equipment shall be limited to the hours of 7:00am to 9:00pm. 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 o slides, sinking, or collapse. 16. The developer shall reserve the right to install, maintain, remove or convert to permanent stormwater management facilities where applicable all erosion control measures required by this plan regardless of the sale of any lot, unit, building or other portion of the property. 17. Temporary stabilization shall be temporary seeding and mulching. Seeding is to be at 75 lbs/acre, and in the months of September to February to consist a 50/50 mix of Annual Ryegrass and Cereal Winter Rye, or in March and April to consist of Annual Rye, or May through August to consist of German Millet. Straw mulch is to be applied at 801bs/100sf. Alternatives are subject to approved by the County erosion control inspector. 18. Permanent stabilization shall be lime and fertilizer, permanent seeding, and mulch. Agricultural grade limestone shall be applied at 90lbs/ 1000s f, incorporated into the top 4-6 inches of soil. Fertilizer shall be applied at 1000lbs/acre and consist of a 10-20-10 nutrient mix. Permanent seeding shall be applied at 1801bs/acre and consist of 95% Kentucky 31 or Tall Fescue and 0-5% Perennial Ryegrass or Kentucky Bluegrass. Straw mulch is to be applied at 801bs/100sf. 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 control measures are to be removed within 30 days of final site stabilization, when measures are no longer needed, subject to approval by the County erosion control inspector. 21. This plan shall be void if the owner does not obtain a permit within 1 year of the date of approval. (Water Protection Ordinance section 17-204G.) 22. Permanent vegetation shall be installed on all denuded areas within nine (9) months after the date the land disturbing activity commenced (Water Protection Ordinance section 17-2078) OTHER NOTES 1. This plan is provided for the implementation of erosion and sediment control measures only. 2. The existing vegetation at the site is grass and woods. 3. The earthwork quantities have not been calculated. 4. All excavation for underground pipe installation must comply with OSHA Standards for the Construction Industry (29 CFR Part 1926). 5. The location of existing utilities across or along the line of the proposed work are not necessarily shown on the plans and where shown are only approximately correct. The contractor shall on his own initiative locate all underground lines and structures as necessary. 6. The contractor shall verify the locations of all boundaries, buildings, vegetation and other pertinent site elements. 7. The contractor shall be responsible for notifying "MISS UTILITY" - 811. 8. Any damage to existing utilities caused by the contractor or its subcontractors shall be the contractor's sole responsibility to repair. This expense is the contractor's responsibility. 9. All paving, drainage related materials and construction methods shall conform to current specifications and standards of VDOT unless otherwise noted. 10. Erosion and siltation control measures shall be provided in accordance with the approved erosion control plan and shall be installed prior to any clearing, grading or other construction. 11. A11 slopes and disturbed areas are to be fertilized, seeded and mulched. The maximum allowable slope is 2:1. Where it is reasonably obtainable, lesser slopes of 3:1 or better are to be achieved. 12. Paved, rip -rap or stabilization mat lined ditch may be required when in the opinion of the Engineer it is deemed necessary in order to stabilize a drainage channel. 13. All traffic control signs shall conform to the Virginia Manual for Uniform Traffic Control Devices. 14. Unless otherwise noted all concrete pipe shall be reinforced concrete pipe - Class III. 15. Concrete and asphalt shall not be placed unless the air temperature is at least 40 degrees in the shade and rising. Material shall not be placed on frozen subgrade. 16. Existing asphalt pavement shall be saw cut and removed as per the specifications. Removal shall be done in such a manner as to not tear, bulge or displace adjacent pavement. Edges shall be clean and vertical. All cuts shall be parallel or perpendicular to the direction of traffic. GROUNDCOVER FOR SLOPES STEEPER THAN 3 TO 1 1. For slopes steeper than 3 to 1, a low -maintenance groundcover seed mixture shall be used. An acceptable one from the erosion control manual is 108 lbs/acre of Kentucky Fescue, 2 lbs/acre of Red Top grass, 20 lbs/acre of season nurse crop (see III -303 of the manual for options), 20 lbs/acre of crownvetch. Depending on the seeding season, variations may be used in accordance with the manual. 2. For slopes steeper than 3 to 1, soil stabilization blankets shall be used. The type and method of installation shall be chosen by a contractor/manufacturer experienced in this type of work and shall be in accordance with the manual. Outlet Protection Design Table Apron assumed to be on level ground Outlet Hydraulics Apron Name Diameter Q2. 2 -yr TW2, 2 -yr tailwater depth V2, 2 -yr velocity Upstream width La. Length of Apron Downstream width VDOT rip -rap size (ft) (cfs) (ft) (fps) (ft) (ft) (ft) Sta 16+95 1.25 1.08 0 11.9 3.75 10.00 13.75 Class I Sta 18+36.5 1.25 2.19 0 9.5 3.75 10.00 13.75 Class I Connector'A' 1.25 1.21 0 6.1 3.75 10.00 13.75 Class I Sta 22+14 1.25 1.42 0 10.1 3.75 10.00 13.75 Class I Connector'B' 1.25 1.25 0 5.9 3.75 10.00 13.75 Class I Sta 26+61 1.50 3.43 0 15.6 4.50 10.00 14.50 Class I Sta 29+44 1.25 0.57 0 7.7 3.75 10.00 13.75 Class I Connector'D' 1.25 0.96 0 5.4 3.75 10.00 13.75 Class I Sta 36+84 2.00 13.58 0 19.8 6.00 12.00 18.00 Class I DATE February 6, 2012 REVISIONS April 30, 2012 November 30, 2012 April 15, 2013 SCALE AS NOTED p,LTH OF Gj 0"Z BRIAN P. SMffH � CERTIFICATE No. .off 14591 w� o ,�v ��s`sIONAL E��l RIAN P. SMITH, PE IVIL ENGINEERING, INC, @0LF C ° M pffl a 'M DONE - Lao FLMAW 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embargmail.com JOB NUMBER 09-011-00 DWG. NAME Miller School 2.pro SHEET The contractor shall install and maintain a safety fence around each silt trap with excavated storage until such The contractor shall install and maintain a safety fence around each silt trap with excavated storage until such time the trap is removed from service. CT2 time the trap is removed from service. DATE February 6, 2012 1992 3.02 1992 3.18 CONS TR UC TION OF A SILT FENCE SILT FENCE CULVERT INLET, REVISIONS STONE CONSTRUCTION ENTRANCE (WITHOUT WIRE SUPPORT) PIPE OUTLET CONDITIONS April 30,2012 1. SET THE STAKES. 2. EXCAVATE A 4"X 4" TRENCH PROTECTION November 30, 2012 UPSLOPE ALONG THE LINE OF A A 70' MIN, EXISTING STAKES, ENOMAU. Aj .3PAVEMENT ,5:1 6'MAX. —r .► ^f MOUNTABLE BERM / i' 3do _____________ FILTER CLOTH G MIN. A _/ ^ �- �'� '�� ._-_ ..__«......».- ___;..-�. _-t-____._................. ....., d .. - S I D E ELEVATION _ S �r�• �,,� T° OF FlLL i ` "'-- CULVERT -_---------- APIPE REA WITH NO DEFINED EXISTING GROUND / -'� . Ii11 1 { CHANNEL PLAN VIEW iiiiiiiiiijlllllllll 70' MIN. F FLOW 13 WASHRACK 10' MIN, 1 � (OPTIONAL) L 12' * IN. 4M MIN.--- N EXISTING a PAVEMENT 3. STAPLE FILTER MATERIAL 4. BACKFILL AND COMPACT _° -- `-� d TO STAKES AND EXTEND THE EXCAVATED SOIL. FILTER CLOTH KEY IN 6"-S"; RECOMMENDED FOR ENTIRE PERIMETER I IT INTO THE TRENCH. � TOE Or Fit SECTION A-A J VDOT kl I �� POSITIVE DRAINAGE IN, COURSE AGGREGATE B TO SEDIMENT O TRAPPING DE V FCE S) • O SILT FENM A • MUST EXTEND FULL WIDTH K * DISTANCE IS 6` RQIPIfMUAA IF FLOW 3d MIN. LU 0 OF INGRESS AND EGRESS / u OPERATTON PLAN VIEW . / -•' � �+T -------------- ( ) 12' M1N.L FLOW ' U ✓ v . II11 -J.,I a.• III 4do 1 i — z 3 MIN. - V T ��,.1,t �` .L'�, L S T O '� l� C OMB1`l IN.�'"1 T O N FFI IPE OUTLET TO WELL 0 FLOW � EFINED CHANNEL 0 < LLJ .3 FILTER CLOTH ---/// PLAN VIEW i n/ SECTION w- fA—A L III = — III 8 _ 1.0' 1 s+ 2 SHEET FLOW INSTALLATION Q W i (PERSPECTIVE VIEW) 0 %ram - UU LU d j LU ` I I FLOW {11 SECTION A-A TT FILTER CLOTH KEY IN S"-S ; RECOMMENDED FOR ENTIRE PERIMETER AVIA I B I A \\ NOTES: 1. APRON LINING MAY BE RIPRAP, GROUTED RIPRAP, GABION REINFORCED CONCRETE DRAIN SPACE ' ,. FLOW BASKET, OR CONCRETE. B pp 2. La IS THE LENGTH OF THE RIPRAP APRON AS CALCULATED ��"�V / SECTION C7 — D USING PLATES 3.18-3 AND 3.18-4. � ? \ 3. d = 1.5 TIMES THE MA%LHON STONE DIAMETER, BUT NOT � CLASS I RIPRAP LESS THAN 6 INCHES. z ' VDOT #3. #357 OR #5 COARSE AGGREGATE Source: Adapted from 1983 Maryland Standards for Soil Plate 3.02-1 / IIIIIi \ TO REPLACE SILT FENCE IN " HORSESHOE - WHM Erosion and Sediment -Control, and Va. DSWC HIGH VELOCITY OF FLOW IS EXPECTED Source: Va Plate 3.18-1 O POINTS A SHOULD HE HIGHER THAN POINT H. . DRAINAGEWAY INSTALLATION Source: Adapted from VDOT Standard 111-9 (FRONT ELEVATION) Sheets and Va. DSWC Plate 3.08-� III - 157 O 1992 3.13 1992 3.11 TEMPOR.AR Y SEDIMENT TRA.I-' R O CFS CHECK DAM W TEMPORARY RIGHT-OF-WAY 1VARABLE" 2 ACRES OR LESS OF DRAINAGE AREA: DIVERSIONS GRIOOUND VARIABLE EV.VDOT # 1 ---"`----�' SCALE - - 1.0 6" COARSE AGGREGATE __ i8' 1d[iN• N.T.S. 67 CU. YDJACRE VARIABLE N � 3' FILTER CLOTH (OPTIONAL) 1 67 CU. YD./ACRE (EXCAVATED) 4' FILTER CLOTH ORIGINAL (DOWNSTREAM VIEW) __--- p,LTH op D� GROUND VDOT # 1 g' 2diINIM131�t *SEE PLATE 3.13-1 COARSE AGGREGATE CLASS I RIPRAP COARSE AGGREGATE U BRIAN P. SMITH a CERTIFICATE No. .off 145611 CROSS SECTION OF OUTLETFlow _ ?'J s' com aded Soil TYPICAL GRAVEL STRUCTURE o��sslONAL CLASS I RIPRAP �•`` `y..-, LENGTH (IN FEET) _ B X DRAINAGE AREA eL (IN AC.) DIVERSION 2-10 ACRES OF DRAINAGE AREA: COMPACTED SOIL i!{►141}{�!'i'r{alit#lgak{,{ �. DIKE IAN P. SMITH, PE III !i �{f���sl�t�i�I�I�4�I!�1�I�4,lI��CI{i�c'tI��..•-.-� � � _t �'+'�'�'►',�+`�I�'��I�!'R�1,i�#'i'1`�;Itrt �,�`-�`-�-.��,,- �. _ ------ - - --------------- CIVIL ENGINEERING, INC. I111l1�I.tj_111i 1L1 ► �.� 11-- t E j t l i 1 t i1 i 1 IIIc I I 1 I 1 6.. t N- ! t I l.1.1 #!1! lift ME DLSM D LUD IYLSGJtNflffl !I'I[�I�111�t)lI9I�t1III11J� ``-�..._� .,���.,.__ •T __._._ I o 1'' FILTER CLOTH Troy, VA 22974 .. "or/ �` 434.296.3644 f )/ (OPTIONAL) 1 COARSE AGGREGATE �� bpspe@embargmail.com .•--'�f�.- ,,` M `•D EXCAVATED FILTER CLOTH (DOWNSTREAM VIEW) 6' MAI -- AREA VDOT #I COARSE AGGREGATE COARSE AGGREGATE SHALL BE VDOT #3, #357 OR #s TYPICAL EARTHEN STRUCTURE JOB NUMBER OUTLET (PERSPECTIVE VIEW) FLOW �r 3t 09-011-00 4 5 # Source: Va. DSWC Plate 3.131-2 Source: Va. DSWC Plate 3.11-1 DWG. NAME CLASS I RIPRAP 111-62 Miller School 2.pro III-76 SHEEP CT3 A. Minimum Standards: Minimum Standards 4(1): Permanent or temporary soil stabilization must be applied to denuded areas within 7 days after final grade is reached on any portion of the site. Temporary soil stabilization shall be applied within 7 days to denuded areas which may not be at final grade but will remain dormant (undisturbed) for longer than 30 days. Permanent stabilization shall be applied to areas that are to be left donnant for more than one year. Soil stabilization refers to measures which protect soil from the erosive forces of raindrop impact and flowing water. Applicable practices include vegetative establishment, mulching, soil stabilization blankets and the early application of gravel base on areas to be paved. Soil stabilization measures should be selected to be appropriate for the time of year, site conditions and estimated duration of use. Minimum Standards 4(2): During construction of the project, soil stock piles shall be stabilized or protected with sediment trapping measures. The applicant is responsible for the temporary protection and permanent stabilization of all soil stockpiles on site as well as soil intentionally transported from the project area. Minimum Standards 4(3): A permanent vegetative cover shall be established on denuded areas not otherwise permanently stabilized. Permanent vegetation shall not be considered established until a ground cover is achieved that, in the opinion of the local program administrator or his designated agent, is uniform, mature enough to survive and will inhibit erosion. Minimum Standards 4(4): Sediment basins and traps, perimeter dikes, Sediment barriers and other measures intended to trap sediment shall be constructed as a first step in any land disturbing activity and shall be made functional before cup slope land disturbance takes place. Minimum Standards 4(5): Stabilization measures shall be applied to earthen structures such as dams, dikes, and diversions immediately after installation. Minimum Standards 4(6): Sediment traps and sediment basins shall be designed and constructed based upon the total drainage area to be served by the trap or basin. a. The minimum storage capacity of a sediment trap shall be 134 cubic yards per acre of drainage area and the trap shall only control drainage areas less than three acres. SOIL EROSION CONTROL 02020-1 It has a moderate permeability rate and an erodibility factor (K) of 0.28. The hydrological group is C. 27C — Elioak Loam, 7-1501/0 slopes. This deep, strongly sloping, well drained soil is on convex ridge tops and side slopes. Generally, the surface layer is dark brown and reddish brown loam about 8 inches thick. The subsoil is about 41 inches thick The upper part is yellowish red silty clay loam and red silty clay and red silty clay loam and silt loans in the lower part. It has a moderate permeability rate and an erodibility factor (K) of 0.28,. The hydrological group is C. 27D — Elioak Loam, 15-25% slopes. This deep, moderately steep, well drained soia is on side slopes. Generally, the surface layer is dark brown and reddish brown loam about 8 inches thick. The subsoil is about 41 inches thick. The upper part is yellowish red silty clay loam and red silty clay and red silty clay loam and silt loam in the lower part. It has a moderate permeability rate and am erodibility factor (K) of 0.28. The hydrological igroup is C. 34E — Glenelg loam, 25-45% slopes. This deep, steep, well drained soil is on side slopes leading down to drainage ways. Generally, the surface layer is dark brown and dark yellowish brown loam about 8 inches thick. The subsoil is about 20 inches thick Iit is mostly strong brown and yellowish red silty clay loam. It has a moderate permeability rate and an erodibility factor (K) of 0.43. The hydrological group is B. 6. Critical areas: Care should be taken on a daily basis to maintain the erosion control structures throughout the site to prevent silt from leaving the construction area. This shall be especially true for the steep area that drains towards the roadside ditch. 7. Erosion and sediment control measures: Measures on the accompanying drawings are to be installed in accordance with the specifications and standards of the "Virginia Erosion and Sedimentation Control Handbook", Third Edition, 1992. The measures named below should be installed in accordance with this handbook as noted below. Special E & S Control Instructions Concerning the Stream Crossing Near Statiorn 10+40: a. Due to the limited work area and close proximity to the state road, construction of the stream crossing will require special awareness and attention during the clearing, storm installations, and grading operations. The following is one acceptable method to minimize potential erosion, protect the stream and to minimize interference iwith traffic on the state road. b. The contractor shall construct a temporary construction entrance (CE) in the level area just to the north of the existing box culvert. This will allow initial equipment arnd supply access. Just upstream of the junction box, the contractor can temporarily block the stream with sand bags and install an overflow pipe that drains to the existing biox culvert. This should keep the work area relatively dry. A coir log shall be securely SOIL EROSION CONTROL 02020-5 b. Surface runoff from disturbed areas that is comprised of flow form drainage areas greater than or equal to three acres shall be controlled by a sediment basin. The minimum storage capacity of a sediment basin shall be 134 cubic yards per acre of drainage area. The outfall system shall, 'at a minimum, maintain the structural integrity of the basin during a twenty-five year storm of 24-hour duration. Runoff coefficients used in runoff calculations shall correspond to a bare earth condition or those conditions expected to exist while the sediment basin is utilized. Minimum Standards 4(7): Cut and fill slopes shall be designed and constructed in a manner that will minimize erosion. Slopes that are found to be eroding excessively within one year of permanent stabilization shall be provided with additional slope stabilizing measures until the problem is corrected. Minimum Standards 4(8): Concentrated runoff shall not flow down cut or fill slopes unless contained within an adequate temporary or pernanent channel, flume or slope drain stricture. Minimum Standards 4(9): Whenever water seeps from a slope face, adequate drainage or other protection shall be provided. Minimum Standards 4(10): All storm sewer inlets that are made operable during construction shall be protected so that sediment -laden water cannot enter the conveyance system without first being filtered or otherwise treated to remove sediment. Minimum Standards 4(11): Before newly constructed stormwater conveyance channels or pipes are made operational, adequate outlet protection and any required temporary or permanent channel lining shall be installed in both the conveyance channel and receiving channel. Minimum Standards 4(12): When work in a live watercourse is performed, precautions shall be taken to minimize encroachment, control sediment transport and stabilize the work area to the greatest extent possible during construction. Non -erodible material shall be used for the constnuction of causeways and cofferdams. Earthen fill may be used for these structures if armored by non - erodible cover materials. Minimum Standards 4(13): When a live watercourse must be crossed by construction vehicles more than twice in any six-month period, a temporary vehicular stream crossing constructed of non -erodible material SOIL EROSION CONTROL 02020-2 placed at the inlet of the existing box culvert. At this point, the contractor can perform the initial clearing of the stream banks, prepare the base grade and install the culvert extension and junction box. c. Whenever possible, all materials and equipment shall enter from the school side of this stream. Minimal activity shall occur along the state road. d. The new road just to the east of the stream can serve as a staging area for the construction of the stream crossing. e. The next stage of work will be the installation of the new box culvert. Relocate the sand bags and overflow pipe upstream of the box culvert inlet. Perform the initial clearing of the stream banks as before. Prepare the base and install the culvert. Continue to move the coir log upstream and place at the inlet of the most recently installed section of culvert. Clear and excavate only the minimum area necessary to install each stage. Do not clear the entire length of stream bank. f. Backfilling can occur after each stage, but only to a point just above the box culvert. Once the entire length of storm items have been installed, the remainder of the fill can be placed. The stream shall be protected during the next filling and compaction process with the noted Silt Fencing (SF) and Silt Trap (ST). g. At this point, the temporary construction entrance (CE) can be relocated over the new entrance. General Proiect Instructions: a. All E & S Control measures for each drainage area shall be installed according to the attached plans and approved by the inspector from Albemarle County prior to any clearing and grading. b. Begin clearing and grading. c. Apply dust control (DC) measures as needed. d. Apply construction road stabilization (CRS) as soon as possible. e. Apply inlet protection (IP) soon after the installation of the new inlet. f Apply permanent seeding (PS) and mulch (MU) to areas as indicated on the plans. g. All temporary sediment control structures are to remain in place and will be removed only when a satisfactory stand of permanent grass is present. STRUCTURAL METHODS CE = CONSTRUCTION ENTRANCE A temporary construction entrance, without a wash rack, shall be installed where the access are intersects with the state road. CRS= CONSTRUCTION ROAD STABILIZATION Construction road stabilization, or stone, shall be placed along on-site vehicle transportation routes immediately after grading to minimize erosion during wet weather. DC = DUST CONTROL A variety of dust control methods can be chosen to reduce surface and air movement of dust during land disturbing, demolition, and construction activities. Some of the more common methods are water sprinkling, spray -on adhesives, vegetative cover, mulch, stone, or calcium chloride. SOIL EROSION CONTROL 02020-6 shall be provided. Minimum Standards 414 All applicable federal, state and local regulations pertaining to working in of crossing live watercourses shall be met. Minimum Standards 4(15): The bed and banks of a watercourse shall be stabilized immediately after work in the watercourse is completed. Minimum Standards 4(16): Underground utility lines shall be installed in accordance with the following standards in addition to other applicable criteria: a. No more than 500 linear feet of trench may be opened at one time. b. Excavated material shall be placed on the uphill side of trenches. c. Effluent from dewatering operations shall be filtered or passed through an approved sediment trapping device, or both, and discharged in a manner that does not adversely affect flowing streams or off-site property. d. Material used for backfilling trenches shall be properly compacted in order to minimize erosion and promote stabilization. e. Re -stabilization shall be accomplished in accordance with these regulations. f Applicable safety regulations shall be complied with. Minimum Standards 4(17): Where construction vehicle access routes intersect paved public roads, provisions shall be made to minimize the transport of sediment by vehicular tracking onto the paved surface. Where sediment is transported onto a public road surface, the road shall be cleaned thoroughly at the end of each day. Sediment shall be removed from the roads by shoveling or sweeping and transported to a sediment control disposal area. Street washing shall be allowed only after sediment is removed in this manner. This provision shall apply to individual subdivision lots as well as to larger land -disturbing activities. Minimum Standards 4(18): All temporary erosion and sediment control measures shall be removed within 30 days after final site stabilization or after the temporary measures are no longer needed, unless otherwise authorized by the local program administrator. Trapped sediment and the disturbed soil areas resulting from the disposition of temporary measures shall be permanently stabilized to prevent fiurther erosion and sedimentation. Minimum Standards 4(19) Properties and waterways downstream from development sites shall be protected from sediment deposition, erosion and damage due to increases in volume, velocity and peak flow SOIL EROSION CONTROL 02020-3 IP = INLET PROTECTION All storm sewer inlets shall be protected during construction. Sediment -laden water shall be filtered before entering the storm sewer inlets. SF = SILT FENCE Silt fence sediment barriers will be installed down slope of areas with minimal grades to filter sediment -laden runoff from sheet flow as indicated on the plans. VEGETATIVE METHODS: PS = PERMANENT SEEDING All areas disturbed by construction shall be stabilized with permanent seeding or a vegetative cover immediately following finished grading. TO = TOPSOILING Topsoil will be stripped from areas to be graded and stockpiled for later use. Stockpile locations shall be located off-site and area to be stabilized with temporary vegetation. TS = TEMPORARY SEEDING All denuded areas which will be let dormant for extended periods of time shall be seeded with fast germinating ternporary vegetation immediately following grading. Selection of the seed mixture will depend on the time of the year it is applied. MU = MULCH EROSION CONTROL BLANKETS Mulch or erosion control blankets will be installed over fill slopes which have been brought to final grade and have been seeded to protect the slopes from rill and gully erosion and to allow seed to germinate properly. 8. Permanent and temporary stabilization: Permanent: All areas disturbed by construction shall be stabilized with permanent seeding or a vegetative cover immediately following finished grading. Generally, if the soil is too red it should be replaced with good brown topsoil. Lime shall be applied at a rate of 2 tons per acre of pulverized agricultural grade limestone (90 lbs. /1,000 ft2) depending on the soil pH. In addition, 10-20-10 fertilizer shall be applied at a rate of 1,000 lbs./acre (23-lbs./1,000 ft2). Both the lime and fertilizer shall be uniformly incorporated into the top 4 to 6 inches of loose soil and worked in by hand with a steel rake. Grass seed shall be uniformly planted with 1/4" to 1/2" soil cover. The grass seed for the shoulders should be different than on the steep slopes. In either case the seed should be certified and indicated on the tag that it has been tested within the past 12 months. Follow the seeding specifications (types and rates) as indicated for a contractors mix (sunny locations) from Southern States. If a hydro -seeder is to be used, the seed shall not be left in the tank for more than 30 minutes. Any longer may damage the seed and result in a poor germination production. SOIL EROSION CONTROL 02020-7 rate of stormwater runoff for the stated frequency storm of 24-hour duration in accordance with the standards and criteria outlined in the regulations. B. Narrative: 1. Project description: This project is involves the construction of a new entrance to the Miller School in western Albemarle County. This project is on a large tract of land in the Samuel Miller District described as TMP 72-32. Approximately 6.92 acres will be disturbed. 2. Existine site conditions: The existing topography for the proposed road varies throughout the project. There is an abandoned roadbed from the proposed entrance to the approximately station 17+00 where it disappears into an open field. Up to station 17+00 the area has well established deciduous canopy trees, understory trees and ground vegetation on either side of the roadbed. The terrain gently slopes within this area and minimizes contact with critical slopes. Beyond station 17+00 the land is more open with scattered trees on moderate slopes. The drainage basin is bowl shaped and drains to an existing small pond in front of the campus. 3. Adjacent areas: The E & S manual requests this section to describe adjacent areas which might be affected by this land disturbance project. There should not be any effect on adjoining properties as the Miller School property is so vast and encompasses hundreds of acres p p y p .This being said, runoff from this project will traverse a short reach of stream prior to entering the Mechum's River. It is still important to minimize the stream impact. 4. Off-site areas: This plan does not address cut and fill quantities of soil or whether a waste or borrow site is needed. When known, it must have an approved soil erosion control plan for that jurisdiction. In no case shall the contractor haul material to or from an off-site area that does not already have a soil erosion control plan approved by the Local Program Administrator. 5. Soil description: The soils that may be found at this site are described below. Additional information of these soils can be found in the "Soil Survey of Albemarle County, Virginia" published by the USDA — Soil Conservation Service. 27B — Elioak Loam, 2-7% slopes. This deep, gently sloping, well drained soil is on broad to narrow convex ridge tops. Generally, the surface layer is dark brown and reddish brown loam about 8 inches thick. The subsoil is about 41 inches thick. The upper part is yellowish red silty clay loam and red silty clay and red silty clay loam and silt loam in the lower part. SOIL EROSION CONTROL 02020-4 The seed sliall be covered with an appropriate amount and type of mulch in accordance with section 3.35 of the handbook Straw or hay mulch shall be applied at a rate of 1.5 to 2 tons per acre. Please refer to the handbook for proper application rates if other types of mulches are used. A final sealant tack coat shall be sprayed over the mulch to deter dispersion. In all seeding operations, seed, fertilizer and lime will be applied prior to mulching. Permanent vegetation shall not be considered established until a ground cover is achieved that, in the opinion of the local program administrator or his designated agent, is uniform, mature enough to survive and will inhibit erosion. Straw mulching is probably the best way to protect the soil and contain moisture within the seedbed on fairly level areas. To stabilize the straw on the slopes or in open areas that may blow use a jute mesh or matting. Temporary: Temporary seeding shall be applied 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. These areas may include denuded areas, soil stockpiles, dikes, dams, and sides of sediment basins and temporary road banks. A permanent vegetative cover shall be applied to areas that will be left donnant for a period of more than 1 year. Seedbeds shall be properly prepared and quality seed shall be used. The soil to be seeded shall be loosened by discing, raking or harrowing. It shall not be compacted, crusted or hard. If the area to be seeded will be left undisturbed for more than 1 year follow the directions above for establishing permanent vegetation. 9. Stormwater Considerations: Stormwater quality measures are not required as the amount of imperious cover on this tract of land is less than 16%. The quantity of the storm water runoff will increase slightly due to the increase in impervious road cover. However, an equal or greater amount of existing impervious areas are being converted to grass. 10. Maintenance and Inspections: In general, all erosion and sediment control measures will be checked weekly and after every rainfall. The following items will be checked in particular: a. The sediment traps will be checked regularly for sediment cleanout. As a minimum, the traps shall be cleaned out when they a half full of sediment. b. The gravel outlets will be checked regularly for sediment buildup that will prevent drainage. If the gravel is clogged by sediment, it shall be removed and cleaned or replaced. c. The seeded areas will be checked regularly to ensure that a good stand is maintained. Areas should be fertilized and reseeded as needed. SOIL EROSION CONTROL 02020 -8 DATE February 6, 2012 REVISIONS April 30, 2012 November 30, 2012 0 0 C W SCALE N.T.S. hLTH o.F� Df BRIAN P. SMITH CERTIFICATE No. 145,11 w� ��s`SIONAL E��1 ZIAN P. SMITH, PE VIL ENGINEERING, INC. MF MEN DFARK F. D[�Ca [D paDaC� 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embargmail.com DWG. NAME Miller School 2.pro SHEET s� J 1 �►`�'ANEW- sTeR E � `�-� . = / _ — \ \ \ \ \ -X' \ \ \ --� ACRES I 1 \ \ /� .05 G' NEW N,SORM IPE \ \ \\ \ \ ✓ \ \\v� 0//( \-�, --CONfaECTOR 'D'~\ \\ / I 0 er andl �26,w� JEW STORM PPE _ \ DA=0.03' acr \ \ \ -�� \ \ J (((( Ys L �,0)NNECTOR \\_ \/ /I $�7.J =0.76 acre / 0.9 A RESP— `' \ \ _ / \ \ / / _ I /j I I I O rla d fl w / \\ \ \ — // i — \ — lc>?ach / ✓ / / / / / t ( \ \ 785 \ / -L=1 6' Somb�71, nati o Tc=�2. ink. A / / .^,` \ � � � Ta��m 'IX \\ ' 711 - B p \ / �/ -� / / ` \ /`' �� / / / Sha1'i�M o c�ryt "" pow / < 70 76-) \\ III I /\ Wve 1 I I I �uJ aT IB \ ,�,, \ — _ -\ \ c i fin. ( \ \ E � � / 21\5 ✓ I \ \ 1� ': I iri. 0. 7 18 ACES\ \ ` \ \ `� l i 6 ` \ \ \ �� \ \ `� \ \ \ — / /Z- \ \ \\ \ \\��� < �/ �___ _ \ \ \--__-�\-� III I L \c �� 130' \ \ \ —`\\ \` ` \ \/X \ ` .•\ \ \ _ \'� / I I \ \ \ \ PPE \ -� _ �\ \ — -_._ _ NEI�''S�OR�M, PIPE= \\ \ \ \ \ \ / \ \ � �' ��` � --_ --_.•. ` ` \ \ _- -- I I \ \ \ \ .\ \ \ D*. (outer Io p DA -7-00 timed opp�\ \ \ 'TOTAL=11-40.-acres STA +14�7=\O.�l \ \ \ \ . \682D O . I +q.acr s \ \ 1.57\ AC E b rl�nd f9 0 �� a RAS ,L=2190 ' \ \ �! S-10.5 \ \ 16 Z� \ - w\ \ �� \ \ � \ \ \ \ / \ \\ \ � �\ � 11 � � \ \ � / , , , � \ \ � ', \ \ Shallow �nc�F-trammed f l� — 4 It 1,AGE A EA � % -Tc 0.�mrn\ \ \\N� ST(Q RNT IP� \/ / �- , \ \ \ \ ` ( r .5$i CE / — Ehenrre w -�\ \ \ \ -A\ +�6.5�-J� / / / \ / / �� \ 1 I 1 1 i Tao\ �\ `\ \ \ \ \\ \\ \ - /f / 682 3.46 ACRES I� _ /i >D�er 1 ,n� flow \ \ \ / / �/ I I 1 I I I ` / l \ \ \ _ _ _ / / L-20 11 /Tc=1N min. \ \\ \ C Sha llo 4 I 6 L=189 / / -�� \ \ \NEW�STb WIPE s-18,6 / \ \ \\ ` \ STA +93' Tc-o.�mif�. / \ \ _� WEA acr / • , I � I , i // � \� \ — :� � I 1 �, � I \� / � / / \Total -116 fiin�/ / and �1�w> / =58 ) 1 I %/�� �,� E _�_ ���____�- /%ter- �/� // \ l 1 I (I ,— /�aih'f,��WI I I � � \\ / / / / // / ��--- �� • �`---- .—.�,_-- �- �- � -- -- �f �// / \ / NSW STORM -PSE— — — ^ / / � � � / � _ — _ _ /j \ \ StA 1 +40.4 / l \ \\ \\�</ i \ — / / \ \ \\ \\ \ / /� //� / / // , DA=57 58 acr s / \ �` \ \\\\ \ // / ///////( ` Tc=27 run ZZ ` \ —1till _—�- \\\ / ul DATE April 13, 2011 REVISIONS February 6, 2012 April 30, 2012 November 30, 2012 J O Ow U U 7 c') < wW J J G W W 7 H F SCALE 1'=100' NI,Tii OF Gr BRIAN P. SMfTH CERTIFICATE No. 14511 4i L�%IOXAL S�cti� ZIAN P. SMITH, PE VIL ENGINEERING, INC. @0LF AMM pmffl E D[ 52H ° LaD PWROM 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embargmail.com JOB NUMBER DWG. NAME Miller School 2.pro SHEET \ \ \ \ \ CIP-D.A.= \ \ -\ / / / 41635.8 SQ FT (0.96 ACRES) i /,,-/ / LLI 660 .-- -__- Sidi Arl R7 �' 2 SQ FTFTU 1+.02 ACRES / POST-CONSTRUItTION D.A. / /654 .9 SQ FT .50 ACRES) 1st temis courts / / SIL W #3 -PRON UCnON D A.= oa / 44082.9 -,SQ FT (a,Ql A ES� ----POST-CONSTRUCTION, D.A.- 47671.2 SF�'( 1 .M \ACRES) / 660E - \ \ \ \ \27B L OAK L1 7% SLOP E\ \ \ 270 ELI K LOAM; '-.,2-25%% 7-!�% SLOPS \4E ELIO ENELGLOLD\M.-SL'OPES— J \\ \ 6y0 SILT TRAP #2 LARGER D.A. IS \ \\ \ \ \ = \ \ \ \ \ \ \ \ PRE -CONSTRUCTION D.A.= / 75559.0 SQ FT (1.73 ACRES STA +00 TO STA 17 62p _` \ \ \ \ \ \ —� WSE SOIL \STABILWATION MATTING F�IOM ROAD S OULD TO THE \ , LIMITS \T�� SILT TRAP #1 \� \ N Fo TIiE�TRAV€LWAY FROM 11�,5� ToS�A 17+O c"OT \ \ LARGER D.A. IS S9 \ \ �. NTTRAP a CIP D.A.= 26462.9 SQ FT (0..61 JU Hd5 cnL, U z L N I ARTS & SCIENCE BUILDING 6_' \ \ \ \ \ $ off/ \ \ \ \ \ I o / �' \ \ \ \ \ \ \ \ > } C do o / 1) n � � S9 FT (0.97 /'(CRES) �r � II J cn o _ ----_ � - ♦ ` IN U L C VE IS INSTALLED AND .4--UIME #1 GRADED. POST-CONSTRUCTI D.A.= ' � \ � \ \ \ \168,505.8 SQ FT (3.87ACQE3) - -592 —_, \ \ �— \ \ \ �\ / / �C�/� ` ' /'�� oo, _ \ LIMITS OF R \ LTM OF -� / / TNM.9a.TTRAM / �-// /f / _(SEE DETAILS ON 7.2) � ---- — \ � �' ♦ \� \ \ ` -\ '-- � 6 6 I�Y tF- � � � �h/ SILT #`4 / \ \ 60 \ \ \ \ 664 / Zf°0 — \ \ �\\ s\ \ \ \ \ \ \ TR P #t(SEE IMV 1 EECom\ 656 66p �' LAR R D.A. IS _ L / \ \ \ ` DETAI�s ON � ` — - �u / / ; . / / / / POST CONST SCG ON D.� Z. / $ / \ \ _&__ _ / / / 102226.4 SQ T(2.35 ACRES) / _ _ \ 60 \ \ < �\ \ D / / \ \� \v � off` / / �Tf�'bF�TU�BANCE —, 664° \ \ CE \ o \"_- THIS DIVERSI©N �MAJN( IN F�LAC�E DIRECI�NG / \ \ \\ \ \ \ ✓. � \ a aFoa FF T TRq�2 U L THE sp \ \ \ \ / ' e a / / Y O APPLY �T PI4►VINGJO THE / — VEL AY. �4S AN AL,TERNAT�/E. A TEMPORARI? / / 6q \ Q / �UL CAN BE USED n Q ) / / / / \ \ / °. � / aaa aoa oah - } C / 'atT orf I u c 64p \ \ Q�d6o aaQ aQaa \ ` ✓ • J.LI�AM 7i ! �ry �� / / / / / // / / (SEE DEWLS ON C7.2� °° . I � — — 2 TO 1SLOPE- / - _ ur �F ci Z LID Z I I /X DATE April 13, 2011 REVISIONS February 6, 2012 April 30, 2012 ACRES) SCALE 1'=50, NI,TH of Df BRIAN P. SMITH CERTIFICATE No. .off 14591 O �y ��s`SIDNAL F,��'ti BRIAN P. SMITH PE CIVIL ENGINEERING, INC. 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embargmail.com JOB NUMBE 09-011-00 DWG. NAME Msller School 2.pro SHEET C811 DATE April 13, 2011 REVISIONS February 6, 2012 April 30, 2012 November 30, 2012 SCALE 1'=50• W Lv v �t,T,TFi Op P 0 7, BRIAN P. SMITH a CERTIFICATE No. kks�"sl-tOXAL 14511 ZIAN P. SMITH, PE VIL ENGINEERING, INC. R PORM a LAID ° d a0f 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embargmail.com JOB NUMBER 09-011-00 DWG. NAME Miller School 2.pro SHEET NEW WEST BIO -FILTER 18' WIDE, 100 ' LONG (SEE DETAILS C9.2) TRAP. WEIR THROUGH BERM 2' WIDE BASE, 2' DEEP CLASS I RIP—RAP WITH FILTER FABRIC BASE ELEV=654.00 2:1 SIDE SLOPES 6" PERFORATED PVC PIPE 4' WIDE BERM (HATCHED AREA) TOP ELEV=656.00 6" NON—PERFORATED PVC PIPE L=43'; INV. IN=649.50; INV. OUT=648.50 SLOPE=2.32% TREES BOTANICAL NAME BIO -FILTERS LANDSCAPE SCHEDULE BIO -FILTER LANDSCAPING REQUIREMENTS 1,000 TREES AND SHRUBS PER ACRE EAST BIO -FILTER (1,000 / 43,560) x 1,050 SF = 24 17 shrubs and 7 trees (2.4 to 1 ratio) WEST BIO -FILTER x (1,000 / 43,560) x 1,800 SF = 41 29 shrubs and 12 trees (2.4 to 1 ratio) EAST WEST COMMON NAME SIZE REMARKS QUANT.QUANT. SYMBOL Juniperu5 virginiana Eastern red cedar 3-4' HEIGHT B$B, OAK MULGH BASE 3 4 TI Magnolia virginiana Sweetbay magnolia 6-71 HEIGHT B$B, OAK MULCH BASE 2 4 T2 Quercus phello5 Willow Oak 2" cal. B$B, OAK MULGH BASE 2 4 T3 SHRUBS / BOTANICAL NAME --- ..x::.680 — — — — — — I / TOTALS = -7 12 EAST WEST COMMON NAME SIZE REMARKS „I 1 A AIT nl I A AIT SYMBOL Hydrangea arborescens Wild hydrangea 1511-1811 OAK MULCH BASE 6 10 51 Hamamelis virginiana Witch -hazel 5-4' OAK MULCH BASE 6 10 52 Viburnum prunifolium Black -haw viburnum 1511-1811 OAK MULGH BASE 5 q 53 \ \ \ \\ \ NEW STORMWATER MANAGEMENT ACCESS EASEMENT _ _ _ _ / -> DB -4A98 P -G - \ \ \ --450; FLAT 433 \ \ \ 66 \ I ! �.....TI 1 .'.-- ----- IODTI �0 ,� .........5� --'° NE EAST /BIO-FIL ER -T - % / 1(Q�� WIDE / 105' LANG (SEE DE'�AILS 9.2 5 T3 T2 , /.......J;..... / 65 _ 52 ..... /. / / TI 5152-53 ...`.. .i. — — T2 TI 53 , " . ,........... /... i..... / T3 5152 / .�.. �............ 5251 T2 65 , / / / / / �o� P S 1 / / / PERFORATED PVC// PIPE ... ..... — _� — ..... „ _ \ / / / / soh ,co I �°f I / v`I / / 4 WIDL BERM (MATCHED AREA) / :::: r , / / / TOP /ELEV=656. 0 51 / / 51 / / / TRW. WEIR /THROUGH BERM ' ,,� ," / / , / 2' WIDE BASE, 2' DEEP \ _ -� \ / / �m / / / / / C�LLASS I RIP—RAP WITH FILT�EI� FABRIC / ' i ♦ 650 / \ / / SASE EL V=654.00/ / ♦ / 6 / / 2:1 SIP SLOPES / i —1 :::..:. :. ::::: " 6" NON-PERFOATED Py /PIPE SLOPE INV =1 �6%-./ / '6 L / / ,-- � ........ .. -- • • / 1/660 / � / / � / WITH TER FABRIC CHANNEL /I/ / / / , 660 / / / / / / THR�� THE BTO—FILTER :_ ;:.:. ♦ ` .. ....... .. i:- / / / / �` 2 'WIDE BASE 1 DEEP — _ — / • / / / / _:"i SIDE SLOPES '�'�.-.. /..�... ?----_ /a � / WITMILTEFX FABRIC / :: / / �i�...... / ...... \ C ............ / / TOTAL / /.. / ........ �........ , / / / �...... i ........ . ....... • �...... ........ / ......... ......... / • / / / / ✓. /.... . . .....j.. /............ /...... l �... / / r kD.....f.... / ... ...... �.... ..... , �. / NEW STORM STRUCTURE (SEE DETAILS C9.2) TOTALS = 1-7 2q DATE April 15, 2013 REVISIONS May 6, 2013 May 30, 2013 June 10, 2013 June 9, 2014 SCALE 1'=20' o� �tj}TH OF Lt o x BRIAN P. SMffH a CERTIFICATE No. .off 145g1 o ��ssI`ONAL ETS�'ti PIAN P. SMITH, PE A ENGINEERING, INC. C�O� C�MMOMpp°����� DC�D�aryM� MM(� 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embarqmail.com JOB NUMBER DWG. NAME Miller School 2.pro SHEET C9.1 THE TOTAL NEW IMPERVIOUS AREA FROM THE NEW ENTERNCE=71,625 SF THE EXISTING IMPERVIOUS AREA SLATED TO BE REMOVED=30,595 SF NET NEW IMPERVIOUS AREA TO TREAT=41,030 SF TOTAL BASE AREA REQUIRED FOR BIO-FILTERS=2.5% x 41,030 SF=1,025 SF TOTAL RUNOFF VOLUME REQUIRED TO RETAINED THE FIRST 1"=41,030/12=3,419 CF TWO BIO -FILTERS ARE PROPOSED ON EITHER SIDE OF THE STREAM JUST BELOW THE EXISTING LILLY POND. EACH BIO -FILTER TO BE SIZED IN PROPORTION TO IT'S TOTAL DRAINAGE AREA. THE TOTAL DRAINAGE AREA OF THE BASIN (AS MEASURED FROM AT INLET TO THE CULVERT CROSSING UNDER THE LOOP ROAD AT STATION 36+84=111.40 ACRES THE AREA EAST OF THE STREAM ABOVE THE CULVERT IS 41% OF THE TOTAL 11.40 ACRES. THE AREA WEST OF THE STREAM ABOVE THE CULVERT IS 59% OF THE TOTAL 11.40 ACRES. WEST BIO -FILTER THE REQUIRED BASE AREA OF THE WEST BIO -FILTER IS 59% OF 1,025 SF=605 SF. THE PROVIDED BASE AREA=100 ' x 18' =1,800 SF THE REQUIRED VOLUME OF THE WEST BIO -FILTER IS 59% OF 3,419 CF=2,017 CF. THE PROVIDED VOLUME=2,172 CF AT ELEVATION 654.00. EAST BIO -FILTER THE REQUIRED BASE AREA OF THE EAST BIO -FILTER IS 41% OF 1,025 SF=420 SF. THE PROVIDED BASE AREA=105 ' x 10 '=1,050 SF. THE REQUIRED VOLUME OF THE EAST BIO -FILTER IS 41% OF 3,419 CF=1,402 CF. THE PROVIDED VOLUME=1,413 CF AT ELEVATION 654.00. Dim A Dim B West Bio -filter Volume Calculations East Bio -filter Volume Calculations Min ODI RS -24 17 3: 14% April 15, 2013 April 15, 2013 Length Width Elevation Areas Incremental Volume (cD Accumulated Volume (cD 100 18 653 1,800 1,050 54 48 57 RS -60 27 34 2,172 2,172 106 24 F6-5-41 2,544 1,776 2,952 5,124 112 30 655 3,360 2,574 3,804 8,928 118 36 656 4,248 3,444 EAST BIO -FILTER THE REQUIRED BASE AREA OF THE EAST BIO -FILTER IS 41% OF 1,025 SF=420 SF. THE PROVIDED BASE AREA=105 ' x 10 '=1,050 SF. THE REQUIRED VOLUME OF THE EAST BIO -FILTER IS 41% OF 3,419 CF=1,402 CF. THE PROVIDED VOLUME=1,413 CF AT ELEVATION 654.00. OUTLET 5' NON RFOItATECs ` PROTECnON PVC PIPE 70 ON/- OVERFLOW DAYUC;H------ I Ptto7ECTIO a ` STONE WEIR REBUT A5 NECESS'ARY BERM BERM 3!1SIDE SLOPES (KAx) r 9 ` ° 4" • PERP'OAA-to PVC PIPE SCHEDULE 40 OR Alm OVVED p+ e I I EQUIVALENT PLACED 20 ft, C>.C, Ir rrl ,, fl , I �r tl U II OL"117 r l N I 1 1 PROTECTION/ II w ENERGY PLAN BLEW . OP 056.00 ELEV =654.00 SIDE R Eco oEa ELEV.�53.00-� BERK --\ w Ta 1 TO3;t (MAX) --,, Nom! THE DISTANCE BETWEEN CLEF <XITS WILL NOT EXCEED so FEET. 610FILTER MIX PER (MAN) =rSTATE STANDARDS i"-01 ORIGINAL SILT -J TRAP SIDESLOPE PRCVIDE PIPES ACROSS ENTTREWIDTH , AT 24 FT O.C, UNDERE5RMM GRAVEL (AASHTO M43, 1iZ"-I) WRAPPED IN FILTER FABRIC R040W SILT AND SED:HENT AFTER FIC P%L STABILIZATION. REPLACE WIr'i LOAM OR GM&4ULAR EAKIM FILL. TOP Of BERM iCLEAN<W F=ta 7' WIW.ATERTIGi T VIEIR-1'4w2-w4 0 kv/ - %1j, CAP wii b" iucPub-PERFORATE01 P'b'C PIPE 0 1% MIN. SLOPE �� 20 ft, O C„ LOAm OR GRANULAR 6PERr6RATSID PVC tAkl"ILL PIK a1%MITI,SLOPE CROSS SECTION SILT TRAP RETROFIT TO B10 -FILTER NO SCALE ELEVATIONS SHOWN CAN BE USED FOR BOTH EAST AND WEST BIO -FILTERS The contractor shall rake 8-12" of the biofilter bed before placing the gravel to increase infiltration StormRaxw ROUND SERIES TRASH RACK CONCRETE MANHOLE STANDARD 48 INCH RACK SHOWN DIMENSIONS IN INCHES Tom" 2L tt�P Z4tt s HOPE STRUCTURAL PLASTIC BY PLASTIC SOLUTIONS. INC. TOP ELEVATION=656.02 QUARTER SECTION REMOVABLE FOR ACCESS �V\ PLAN (.0+t py , r.00xt. SIDE VIEW IE s ''Ula,- F+L-im 1mr. IA4 _ (04915,10 StormRaxTm Round Series for Concrete Manhole Part No. Dim A Dim B Dim C East Bio -filter Volume Calculations Min ODI RS -24 17 3: 14% 28 „ April 15, 2013 30 Length Width Elevation Areas Incremental Volume (cf) Accumulated Volume (cf) 105 10 653 1,050 54 48 57 RS -60 27 34 18 3'4 1,413 1,413 111 16 654 1,776 2,175 3,588 117 22 655 2,574 3,009 6,597 123 28 656 3,444 OUTLET 5' NON RFOItATECs ` PROTECnON PVC PIPE 70 ON/- OVERFLOW DAYUC;H------ I Ptto7ECTIO a ` STONE WEIR REBUT A5 NECESS'ARY BERM BERM 3!1SIDE SLOPES (KAx) r 9 ` ° 4" • PERP'OAA-to PVC PIPE SCHEDULE 40 OR Alm OVVED p+ e I I EQUIVALENT PLACED 20 ft, C>.C, Ir rrl ,, fl , I �r tl U II OL"117 r l N I 1 1 PROTECTION/ II w ENERGY PLAN BLEW . OP 056.00 ELEV =654.00 SIDE R Eco oEa ELEV.�53.00-� BERK --\ w Ta 1 TO3;t (MAX) --,, Nom! THE DISTANCE BETWEEN CLEF <XITS WILL NOT EXCEED so FEET. 610FILTER MIX PER (MAN) =rSTATE STANDARDS i"-01 ORIGINAL SILT -J TRAP SIDESLOPE PRCVIDE PIPES ACROSS ENTTREWIDTH , AT 24 FT O.C, UNDERE5RMM GRAVEL (AASHTO M43, 1iZ"-I) WRAPPED IN FILTER FABRIC R040W SILT AND SED:HENT AFTER FIC P%L STABILIZATION. REPLACE WIr'i LOAM OR GM&4ULAR EAKIM FILL. TOP Of BERM iCLEAN<W F=ta 7' WIW.ATERTIGi T VIEIR-1'4w2-w4 0 kv/ - %1j, CAP wii b" iucPub-PERFORATE01 P'b'C PIPE 0 1% MIN. SLOPE �� 20 ft, O C„ LOAm OR GRANULAR 6PERr6RATSID PVC tAkl"ILL PIK a1%MITI,SLOPE CROSS SECTION SILT TRAP RETROFIT TO B10 -FILTER NO SCALE ELEVATIONS SHOWN CAN BE USED FOR BOTH EAST AND WEST BIO -FILTERS The contractor shall rake 8-12" of the biofilter bed before placing the gravel to increase infiltration StormRaxw ROUND SERIES TRASH RACK CONCRETE MANHOLE STANDARD 48 INCH RACK SHOWN DIMENSIONS IN INCHES Tom" 2L tt�P Z4tt s HOPE STRUCTURAL PLASTIC BY PLASTIC SOLUTIONS. INC. TOP ELEVATION=656.02 QUARTER SECTION REMOVABLE FOR ACCESS �V\ PLAN (.0+t py , r.00xt. SIDE VIEW IE s ''Ula,- F+L-im 1mr. IA4 _ (04915,10 StormRaxTm Round Series for Concrete Manhole Part No. Dim A Dim B Dim C Min ID Min ODI RS -24 17 3: 14% 28 „ 24 30 RS -36 213'4 14% 40% 36 43 PS -48 27 3/ 18 54 48 57 RS -60 27 34 18 3'4 66 3i 60 70 Plastic Solutions, Inc. I CUSTOMER: PO Box 4386, Wndte dw, VA 22604 238 McGhee Rd, Whxhesow, VA 22603 �- """'" "- (877) 877-5727 owe ! PROJECT. (540) 72Z-2219 fax httpc//www.plmtic-sohidon.mm I( ISOMETRIC CONCRETE STRUCTURE DIMENSMS INSIDE STRUCTURE DIMENSION OUTSIDE STRUCTURE DIMENSION AVAILABLE OPTIONS ' CROSS BRACING FOR OVERHANG HDPE ANTI -VORTEX PLATE DATE: DRAWN BY: APP'D BY: DETAIL: STORMWATER DETENTION MANHOLE STRUCTURE DATE April 15, 2013 REVISIONS May 30, 2013 J 0 OV =() Z Cn < rvo wW J J W W Z H SCALE AS NOTED A1,TH D,,�, Lj BRIAN P. SMITH a CERTIFICATE No. .a� 14591 ��ssIONAL PIAN P. SMITH, PE AL ENGINEERING, INC. @V��If (����lhMMI�JL�J�pw�� L'9L5�1RH MM 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embargmail.com JOB NUMBER 09-011-00 DWG. NAME Mi'Iler School 2.pro SHEET C9.2 DATE April 30, 2012 REVISIONS November 30, 2012 January 23, 2013 SCALE 1'=50' Q� �NLTH op P o ", BRIAN P. SMITH y CERTIFICATE No. .a� 14591 w� ov 4I0NAL 'S IAN P. SMITH, PE IL ENGINEERING, INC, GOLF COURSE DESIGN DESIGN N R V N I N PLANNING 4835 Three Chopt Road Troy, VA 22974 434.296.3644 bpspe@embargmail.com JOB NUMBER DWG. NAME Miller School 2.pro SHEEP C1010