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HomeMy WebLinkAboutWPO201400069 Plan - Stormwater Stormwater Management Plan 2014-12-12IVANNA WATER & SEWER AUTHORITY CHARLOTTESVILLE, VIRGINIA •� � 1 1 1 � � 1 � 1 SHEET INDEX Cl OVERALL SITE PLAN C3300 EXISTING CONDITIONS & DEMOLITION PLAN C3301 EROSION CONTROL PLAN C3302 GRADING AND DRAINAGE PLAN 03303 STORM DRAIN PLAN & PROFILE C3304 BIORETENTION DETAIL PLAN D2 SITE DETAILS D3 SITE DETAILS PROPOSED SITE MODIFICATIONS 1. CONSTRUCTION OF A NEW GAC FACILITY 2. ROADWAY IMPROVEMENTS 3. STORMWATER IMPROVEMENTS GAC UPGRADES WPO EROSION CONTROL/ STORMWATER MANAGEMENT PLAN NOVEMBER 2014 NORTH RIVANNA WTP VICINITY MAP RAZEN AND SAWYER ASF Environmental Engineers & Scientists 4011 WestChase Boulevard, Suite 500 SANI'OWASSO Raleigh, North Carolina 27607 Lic. No.045376 W� NC License C-0381 �SIONAL by la i4beffiAlle caufAly ., mmly D v l-rp -exit D r Date _ Ez— -- File w i�, , o i Lt c o c, APPROVALS LATE DEPARTlJENT OF COMNfUNITY DEVELOPMENT PLANNER,fZONINC ENGINEER INSPECTIONS ARB DEPARTI,4ENT OF FIRE RESCUE ALBEMARLE COLNTY SERVICE AUTHORITY VIRGINIA DEPAR RENT OF TRANSPORTATION HEALTH DEPARTNvENT �'Q PRELIMINARY DRAWING NOT FOR CONSTRUCTION �co L DESIGNED BTE � �ALTH onp, oo y RIVANNA WATER AND SEWER AUTHORITY NORTH RIVANNA J BTE ffiZENANDSAWYER CHARLOTTESVILLE, VIRGINIA o DRAWN /l f n 1 C-1, ' Environmental Engineers & Scientists 0 o CHECKED ��°i' SANTO )SO CIVIL Lc4 11/14 ALBEMARLE COUNTY RESUBMITTAL #2 LMS Lic. No.045376 4011 WestChase Boulevard, Suite 500 3 10/14 ALBEMARLE COUNTY RESUBMITTAL #1 LMS PROJ.ENGR. DSB O� �i �� Raleigh, North Carolina 27607 WATER TREATMENT PLANT OVERALL SITE PLAN 2 08/14 ALBEMARLE COUNTY SUBMITTAL LMS �'S�Zt7 ��ti NC License C-0381 GAC UPGRADES V) w 1 08/14 FINAL DESIGN DSB NAL ED � z REV DATE ISSUED FOR BY I APPROVED N X - NOTES: OWNER: RIVANNA WATER & SEWER AUTHORITY PROPERTY SIZE: 6.5 ACRES PROPERTY INFO: DB 1049-098 (COUNTY) 14E DB -464-473. PLAT 19C TAX MAP 32E, PARCEL 1A ZONING: RURAL AREA COUNTY: ALBEMARLE STATE: VIRGINIA WATERSHED: NORTH FORK RIVANNA RIVER ENGINEER: HAZEN AND SAWYER, PC 4011 WESTCHASE BLVD. SUITE 500 RALEIGH, NC 27540 SURVEYOR: DRAPER ADEN ASSOCIATES 700 HARRIS STREET, SUITE E CHARLOTTESVILLE, VA 22902 (434) 295-0700 DATUM: HORIZ: NAD -83 VIRGINIA SOUTH ZONE VERT: NAVD-88 EXISTING TOPOGRAPHY PER SURVEY PROVIDED BY DRAPER ADEN ON 9/26/2011. PROPOSED LIMITS OF DISTURBANCE: 0.90 AC SWPPP: QUALIFIED PERSONNEL: TO BE DETERMINED DELEGATION OF AUTHORITY: TO BE DETERMINED SOIL TYPE LEGEND 14D CHESTER LOAM 14E CHESTER LOAM 19C CULLEN LOAM 76 RIVERVIEW LOAM W WATER SITE LEGEND EXISTING FENCE X MANAGED STEEP SLOPES EXISTING CONTOURS PROPERTY LINE FINAL DESIGN DATE OCTOBER 2014 THE SCALE BAR SHOWN BELOW H & S JOB MEASURES ONE NUMBER 32135-011 INCH LONG ON THE ORIGINAL CONTRACT DRAWING DRAWING. NUMBER NUMBER 1 C1 FLAT FILE . ca - 0 ter, Ca - L i I 0 U w Q w m Q U W i z , O U z J O U > T L M 6 d J C� 0 > 0 O �o �z J >o U �00 Ln -a U o� N � z J Q LOU 2 J N 0� O O Ln r) L u� U)W L- U w Q o >Z DESIGNED BTE EXISTING CONDITIONS AND DEMOLITION PLAN 1 "=20' -LTH tion l�, S NTO VITASSO Lic. No.04537616 fWEN AND SAMER Environmental Engineers & Scientists 4011 WestChase Boulevard, Suite 500 Raleigh, North Carolina 27607 NC License C-038"1 RIVANNA WATER AND SEWER AUTHORITY CHARLOTTESVILLE, VIRGINIA WATER TREATMENT PLANT GAC UPGRADES 20 1(0 0 20' 1 "=20'-0" 1 111 NOTES: 1. FLOODPLAIN ELEVATIONS TAKEN FROM FEDERAL EMERGENCY MANAGEMENT AGENCY (FEMA) FLOOD INSURANCE STUDY (FIS) PROFILES. MAP NUMBER:51003CO145D DATE: FEB. 4, 2005 2. ACTUAL SITE CONDITIONS MAY DIFFER FROM THE CONTRACT DRAWINGS. CONTRACTOR SHALL CONTACT THE ENGINEER IF A DISCREPANCY IF FOUND. 3. PRIOR TO EXCAVATION WORK, THE CONTRACTOR SHALL DETERMINE IF ANY CONFLICTS OR INTERFERENCES BETWEEN EXISTING AND NEW UTILITIES EXIST. IF A CONFLICT EXISTS, ' THE CONTRACTOR SHALL BRING IT TO THE ATTENTION OF THE ENGINEER TO DETERMINE HOW TO PROCEED. 4. DEMOLITION CONTRACTOR SHALL COORDINATE ALL ACTIVITIES IF DAMAGES OCCUR DURING CONSTRUCTION ACTIVITIES. 5. CONTRACTOR SHALL HAVE LICENSED SURVEYOR REPLACE EXISTING SURVEY MONUMENTS IF DAMAGED DURING CONSTRUCTION ACTIVITIES. 6. DAMAGE TO EXISTING FACILITIES, THAT ARE NOT TO BE REMOVED, SHALL BE REPAIRED TO ORIGINAL OR BETTER CONDITIONS, AS DETERMINED BY THE ENGINEER, AT NO ADDITIONAL COST. 7. ALL DEMOLISHED MATERIAL SHALL BE PROPERLY DISPOSED OF AT A PERMITTED FACILITY. 8. CONTRACTOR SHALL REMOVE AND REPLACE ANY DAMAGED PAVEMENT AT NO ADDITIONAL COST. WHERE NEW PAVEMENT JOINS EXISTING PAVEMENT, CONTRACTOR SHALL SAWCUT AND TREAT EDGES, AS SPECIFIED. 9. CONTRACTOR SHALL PROVIDE EXCAVATION SUPPORT, AS REQUIRED, DURING CONSTRUCTION TO MAINTAIN THE INTEGRITY OF EXISTING UTILITIES, ROADS, AND STRUCTURES. EXCAVATION SUPPORT SHALL BE DESIGNED BY ENGINEER REGISTERED IN VA, AND SUBMITTED TO ENGINEER FOR REVIEW. 10. CONTRACTOR SHALL PROVIDE TEMPORARY FENCING AROUND PROJECT AREA FOR SITE SECURITY THROUGHOUT THE DURATION OF THE PROJECT. TEMPORARY FENCING SHALL TIE INTO EXISTING FENCING TO PROVIDE A CONTINUOUS BARRIER. SITE DATA OWNER: DRAWN CHECKED PROJ.ENGR. BTE DSB 6.5 ACRES PROPERTY INFO: DB 1049-098 (COUNTY) 4 11/14 ALBEMARLE COUNTY RESUBMITTAL #2 LMS 3 10/14 ALBEMARLE COUNTY RESUBMITTAL #1 LMS 2 08/14 ALBEMARLE COUNTY SUBMITTAL LMS 1 08/14 FINAL DESIGN DSB =V DATE ISSUED FOR BY I APPROVED SUITE 500 EXISTING CONDITIONS AND DEMOLITION PLAN 1 "=20' -LTH tion l�, S NTO VITASSO Lic. No.04537616 fWEN AND SAMER Environmental Engineers & Scientists 4011 WestChase Boulevard, Suite 500 Raleigh, North Carolina 27607 NC License C-038"1 RIVANNA WATER AND SEWER AUTHORITY CHARLOTTESVILLE, VIRGINIA WATER TREATMENT PLANT GAC UPGRADES 20 1(0 0 20' 1 "=20'-0" 1 111 NOTES: 1. FLOODPLAIN ELEVATIONS TAKEN FROM FEDERAL EMERGENCY MANAGEMENT AGENCY (FEMA) FLOOD INSURANCE STUDY (FIS) PROFILES. MAP NUMBER:51003CO145D DATE: FEB. 4, 2005 2. ACTUAL SITE CONDITIONS MAY DIFFER FROM THE CONTRACT DRAWINGS. CONTRACTOR SHALL CONTACT THE ENGINEER IF A DISCREPANCY IF FOUND. 3. PRIOR TO EXCAVATION WORK, THE CONTRACTOR SHALL DETERMINE IF ANY CONFLICTS OR INTERFERENCES BETWEEN EXISTING AND NEW UTILITIES EXIST. IF A CONFLICT EXISTS, ' THE CONTRACTOR SHALL BRING IT TO THE ATTENTION OF THE ENGINEER TO DETERMINE HOW TO PROCEED. 4. DEMOLITION CONTRACTOR SHALL COORDINATE ALL ACTIVITIES IF DAMAGES OCCUR DURING CONSTRUCTION ACTIVITIES. 5. CONTRACTOR SHALL HAVE LICENSED SURVEYOR REPLACE EXISTING SURVEY MONUMENTS IF DAMAGED DURING CONSTRUCTION ACTIVITIES. 6. DAMAGE TO EXISTING FACILITIES, THAT ARE NOT TO BE REMOVED, SHALL BE REPAIRED TO ORIGINAL OR BETTER CONDITIONS, AS DETERMINED BY THE ENGINEER, AT NO ADDITIONAL COST. 7. ALL DEMOLISHED MATERIAL SHALL BE PROPERLY DISPOSED OF AT A PERMITTED FACILITY. 8. CONTRACTOR SHALL REMOVE AND REPLACE ANY DAMAGED PAVEMENT AT NO ADDITIONAL COST. WHERE NEW PAVEMENT JOINS EXISTING PAVEMENT, CONTRACTOR SHALL SAWCUT AND TREAT EDGES, AS SPECIFIED. 9. CONTRACTOR SHALL PROVIDE EXCAVATION SUPPORT, AS REQUIRED, DURING CONSTRUCTION TO MAINTAIN THE INTEGRITY OF EXISTING UTILITIES, ROADS, AND STRUCTURES. EXCAVATION SUPPORT SHALL BE DESIGNED BY ENGINEER REGISTERED IN VA, AND SUBMITTED TO ENGINEER FOR REVIEW. 10. CONTRACTOR SHALL PROVIDE TEMPORARY FENCING AROUND PROJECT AREA FOR SITE SECURITY THROUGHOUT THE DURATION OF THE PROJECT. TEMPORARY FENCING SHALL TIE INTO EXISTING FENCING TO PROVIDE A CONTINUOUS BARRIER. NORTH RIVANNA WTP CIVIL EXISTING CONDITIONS AND DEMOLITION PLAN VERT: NAVD-88 LEGEND LIMITS OF DISTURBANCE TPF TREE PROTECTION FENCE FLOODWAY PROPERTY LINE 100 YR FLOODPLAIN 100' STREAM BUFFER PROPOSED BORING BENCHMARK AREA TO BE DEMOLISHED CLEARING AND GRUBBING FINAL DESIGN DATE OCTOBER 2014 THE SCALE BAR SHOWN BELOW H & S JOB MEASURES ONE NUMBER 32135-011 INCH LONG ON THE ORIGINAL CONTRACT DRAWING DRAWING. NUMBER NUMBER 1 C3300 FLAT FILE . SITE DATA OWNER: RIVANNA WATER & SEWER AUTHORITY PROPERTY SIZE: 6.5 ACRES PROPERTY INFO: DB 1049-098 (COUNTY) TAX MAP 32E, PARCEL 1A ZONING: RURAL AREA COUNTY: ALBEMARLE STATE: VIRGINIA ENGINEER: HAZEN AND SAWYER, PC 4011 WESTCHASE BLVD. SUITE 500 RALEIGH, NC 27607 SURVEY: DRAPER ADEN ASSOCIATES 700 HARRIS STREET, SUITE E CHARLOTTESVILLE, VA 22903 (434) 295-0700 DATUM: HORIZ: NAD -83 (VIRGINIA SOUTH ZONE) NORTH RIVANNA WTP CIVIL EXISTING CONDITIONS AND DEMOLITION PLAN VERT: NAVD-88 LEGEND LIMITS OF DISTURBANCE TPF TREE PROTECTION FENCE FLOODWAY PROPERTY LINE 100 YR FLOODPLAIN 100' STREAM BUFFER PROPOSED BORING BENCHMARK AREA TO BE DEMOLISHED CLEARING AND GRUBBING FINAL DESIGN DATE OCTOBER 2014 THE SCALE BAR SHOWN BELOW H & S JOB MEASURES ONE NUMBER 32135-011 INCH LONG ON THE ORIGINAL CONTRACT DRAWING DRAWING. NUMBER NUMBER 1 C3300 FLAT FILE . Q 0 U) OLN cn 0 U w Q w M Q CD i z i I z w i z � 0 ft� J z o T U N i U) o� N Zi J o c 0 3 � o Uj0 Z J cy, 00 � U Ln o U) I Lf)� �U� N � CL z Q "' o �2 J N m 0 0 4 3 2 u) Li CD � Q REV N X — ' J i i 1; � � � f J T �' � � i ! { � i ,✓ � � ....__•.•_.-. tip► � _-•_._..,, ^�....",.,,,.....�`.'„„„--•-_...,_ ___ _ f NOTES. 1. THE COUNTY INS PECTOR MUST BE NOTIFIED ONE WEEK PRIOR TO THE fff r t %`L PRE—CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT 2g —• OF LAND DISTURBING ACTIVITIES AND ONE WEEK PRIOR TO THE FIN ( AL INSPECTION. 2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONS _. ' °e � ``�-__w..� ,,,,,,.�-- - . TRUCTED AND __... _._...._.._._.,, __. _ MAIN 1 � --~�.�~ _.._. , MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE J ..._..._,..,.._,_. VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA JREGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. t r l� p� 3. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING. r i _.. __#' i# ��� � , I � ,,,-�~_ � 4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE f� MAINTAINED ON THE SITE AT ALL TIMES. 5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN f/ ALBEMARLE COUNTY ' _ I r MANAGED SLOPES - i' I', ~, "} 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 /i ALBEMARLE COUNTY; APPROVAL BY THE COUNTY OF ALBEMARLE. THE CONTRACTOR IS RESPONSIBLE PRESERVED SLOPES f t �., � FOR OBTAINING AN APPROVED VSMP PLAN OR PERMITS FOR ALL BORROW i AND/OR WASTE AREAS ' Po - 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 '�P; FILTER BLDG 340 MEASURE AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE 100 Y !% OD RSI ; / //, , ,, " ( ) ANP""l DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. f: r,r 1 ��• ` e ` 03 8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED ✓`� ` r % '�� / t'`� �" - "~ FILTERING DEVICE BEFORE DISCHARGE. 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 100 STREAM BUFFER EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. "rte 10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED, AND �� �� � J t� -�- • �� �` `'� � ____,~ ,,� PROPERTY PERMITTED BORROW AREA. _ 11. ALL WASTE MATERIAL SHALL BE TAKEN TO AN APPROVED AND PERMITTED f / PROPOSED MANHOLE TYP WASTE AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, OF 5, SEE SHEET M3100 STUMPS WOOD RUBBISH AND OTHER DEBRIS. .. .'i IhL.. r �.. CURB AND GUTTER TYP j ; f f 3���� BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING ORDINANCE ................. . t `�,.� � " � r, e. CE SECTION 5.1.28. .................. .................. i r s . .:. . "� � ✓' � �; ............................... � 13. ALL INERT MATERIAL SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION - LIMITS OF DISTURBANCE, TYP ............... 13-301 OF THE CODE OF ALBEMARLE. �, SETTLI G ASINS e _ Ijf�1- t.......... `/ z ?S 14. BORROW FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER _ THAT MAINTAINS LATERAL SUPPORT IN ORDER TO MINIMIZE ANY HAZARD TO .................... S r 05 PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND SILT FENCE TYP'' gg - CONTRACTOR GEN OR �°� eon �,o'~~x°" mv`m DAMAGE TO ANY PUBLIC STREET BECAUSE OF SLIDES SINKING OR COLLAPSE. 0227000 FLOC STOCKPILE/ ' r BASINS 15. TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. - LAYDOWN AREA / ff �° e e~ r i SEEDING IS TO BE AT 75Ib/acres, AN `•• y d YARD INLET _ ' 1.� \ /:� DIN THE MONTHS OF SEPTEMBER TO - - ;4 PROTECTION TYP. EXISTING "12" TORM DRAIN'j ,- FEBRUARY TO CONSIST OF 50/50 OF ANNUAL RYEGRASS AND CEREAL WINTER ;� _ _ - ✓ - RYE, OR IN MARCH AND APRIL TO CONSIST OF ANNUAL RYE OR MAY MODIFIED MJDx.. i - 0227001 THROUGH AUGUST TO CONSIST OF GERMAN MILLET. STRAW MULCH IS TO BE TRAP, TYP ALBEMARLE COUNTY ✓ APPLIED TO 80lbs/100sf. ALTERNATIVES ARE SUBJECT TO APPROVAL BY THE ALI z o ' 717- `- -~ - — PROPOSED STORM NETWORK �= `' / �' PRESERVED SLOPES SEE SHEET C3 -' COUNTY EROSION CONTROL INSPECTOR. F 303 1 ,-' " , , DV ,o � �., ' � - -� r� '""/ '� -�-------..,_� � 16. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT ` ., o " �"- - --_____•_ SEEDING AND MULCH. AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED STRU"C TION -- TEMPORARY DIVERSION D 3� Q/O. / ENTRANCE, EYP AT 90lbs/1000sf, INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. r w___._ e DIKE, TYP _ ,t ' /,' FERTILIZER SHALL BE APPLIED AT 1000Ibs/acres AND CONSIST OF A 0257701 EROSION CONTROL LEGEND TPF TREE PROTECTION FENCE 141414 SF SILT FENCE N G TEMPORARY DIVERSION DIKE LIMITS OF DISTURBANCE ROCK CHECK DAM INLET PROTECTION GRAVEL CONSTRUCTION ENTRANCE/EXIT MODIFIED MUD TRAP STOCK PILE/LAYDOWN AREA RIPRAP ROLLED EROSION CONTROL MATTING 11/14 ALBEMARLE COUNTY RESUBMITTAL #2 LMS 10/14 ALBEMARLE COUNTY RESUBMITTAL #1 LMS 08/14 ALBEMARLE COUNTY SUBMITTAL LMS 08/14 FINAL DESIGN DSB DATE ISSUED FOR I BY DESIGNED BTE DRAWN BTE CHECKED ___Ltr-Z�', PROJ.ENGR. DSB APPROVED 022700 ROCK CHECK DAM, TYP 0227003 `,"� ROLLED EROSION CONTROL MATTING TYP CURB INILET PROTECTION, TYP. 0227002 f ALBEMARLE COUNTY PRESERVED SLOPES H rm I TH 6;7 P, SANTO WA SO Lie. No.045376 &ONAL' `-~ 10-20-10 NUTRIENT MIX. PERMANENT SEEDING SHALL BE APPLIED AT boSFf 180lbs/acres AND CONSIST OF 95% KENTUCKY 31 OR TALL FESCUE AND 0-5% r PERENNIAL RYEGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS TO BE APPLIED AT 80lb/100sf. ALTERNATIVES ARE SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR. IPI " 17 MAINTENANCE. ALL MEASURES ARE TO BEINSPECTED WEEKLY AND AFTER " "~ A E EACH RAINFALL. ANY DAMAGE OR CLOGGING TO STRUCTURAL MEASURES IS rn ,_ ,,,�"' ,,�c' TO BE REPAIRED IMMEDIATELY SILT TRAPS ARE TO BE CLEANED WHEN 50% -� — �" ✓` "� ��� �bqy, OF THE WET STORAGE VOLUME IS FILLED WITH SEDIMENT. ALL SEEDED AREAS ..�....._._..,_. ",✓' � ROLLED EROSION CONTROL • kw -" - -• - ARE TO BE RESEEDED WHEN NECESSARY TO ACHIEVE A GOOD STAND OF TPF` MATTING (RECM) TYP 400, ., GRASS. SILT FENCE AND DIVERSION DYKES WHICH ARE COLLECTING SEDIMENT 1022014 1 TO HALF THEIR HEIGHT MUST BE CLEANED AND REPAIRED IMMEDIATELY. _ ...._ - TREE PROTECTION _ µ _ __ /�� ,✓ 18. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE -- - - FENCE TYP REMOVED WITHIN 30 DAYS OF FINAL SITE STABILIZATION, WHEN MEASURES ARE NO LONGER NEEDED SUBJECT TO APPROVAL BY THE COUNTY EROSION -"~�„ �., �.� �,,r _____..w.�• ,✓'" - \ CONTROL INSPECTOR. 19. THIS PLAN SHALL BE VOID IF THE OWNER DOES NOT OBTAIN A PERMIT WITHIN DATE OF APPROVAL. (WATER PROTECTION ORDINANCE SECTION 17-424) i� ' 1 YEAR OF THE DA W w. =901 OO YEAR .FLOODPLAIN;,_ .__.._ �._. APPROXIMATE BFE 396' ��� ""��� `� �� 20. PERMANENT VEGETATION SHALL BE INSTALLED ON ALL DENUDED AREAS WITHIN ""•.. ^,.,, �.,,� ``-'-.-_,_� ..-._....._.mew .,_.__............._...._. _._._._..---.^.`""". tl { ._..._,....... NINE (9) MONTHS AFTER THE DATE OF LAND DISTURBING ACTIVITY COMMENCED. ATER PROTECTION ORDINANCE SECTION 17-808 —385 21. A VIRGINIA STORMWATER MANAGEMENT PROGRAM (VSMP) PERMIT FOR THE DISCHARGE OF STORMWATER FROM CONSTRUCTION ACTIVITIES WILL BE FLOODWAY*. ;` REQUIRED FOR THIS PROJECT. VISIT VA DEQ'S VSMP PERMIT WEB PAGE AT f ��t HTTP: //WWW.DEQ.VIRGINIA.GOV/PROGRAMS/WATER/STORMWATERMANAGEMENT/ .__ VSMPPERMITS.ASPX FOR MORE INFORMATION. EROSION CONTROL PLAN 1"=20' RVENAND SAWER Environmental Engineers & Scientists 4011 WestChase Boulevard, Suite 500 Raleigh, North Carolina 27607 NC License C-0381 RIVANNA WATER AND SEWER AUTHORITY CHARLOTTESVILLE, VIRGINIA WATER TREATMENT PLANT GAC UPGRADES 20 110 0 20' 11=20'-O' I TOTAL AREA DISTURBED = 0.80 AC FINAL DESIGN NORTH RIVANNA WTP CIVIL EROSION CONTROL PLAN DATE OCTOBER 2014 THE SCALE BAR SHOWN BELOW H & S JOB MEASURES ONE NUMBER 32135-011 INCH LONG ON THE ORIGINAL CONTRACT DRAWING DRAWING. NUMBER NUMBER 1 1 C3301 FLAT FILE . DESIGNED DRAWN BTE CHECKED+ 11/14 ALBEMARLE COUNTY RESUBMITTAL 42 LMS 10/14 ALBEMARLE COUNTY RESUBMITTAL 41 LMS PROJ.ENGR. DSB 08/14 ALBEMARLE COUNTY SUBMITTAL LMS 08/14 FINAL DESIGN DSB DATE ISSUED FOR BY APPROVED �1 ONL H O� A'o" SANTOWASSO Lie. No.045376 ANAL 20 110 0 20' GRADING AND DRAINAGE PLAN 1"=20'-0" 111 = 20' ffiZENffiD SAMER Environmental Engineers & Scientists 4011 WestChase Boulevard, Suite 500 Raleigh, North Carolina 27607 NC License C-0381 RIVANNA WATER AND SEWER AUTHORITY CHARLOTTESVILLE, VIRGINIA WATER TREATMENT PLANT GAC UPGRADES 01 Eel Owl 1001an] 1ilk 101ray,TA19 NOTES: 1. FINAL DESIGN DATE OCTOBER 2014 THE SCALE BAR SHOWN BELOW H & S JOB MEASURES ONE NUMBER 32135-011 INCH LONG ON THE ORIGINAL CONTRACT DRAWING DRAWING. NUMBER NUMBER 1 C3302 FLAT FILE T y,. ............ . i {4 f DESIGNED DRAWN BTE CHECKED+ 11/14 ALBEMARLE COUNTY RESUBMITTAL 42 LMS 10/14 ALBEMARLE COUNTY RESUBMITTAL 41 LMS PROJ.ENGR. DSB 08/14 ALBEMARLE COUNTY SUBMITTAL LMS 08/14 FINAL DESIGN DSB DATE ISSUED FOR BY APPROVED �1 ONL H O� A'o" SANTOWASSO Lie. No.045376 ANAL 20 110 0 20' GRADING AND DRAINAGE PLAN 1"=20'-0" 111 = 20' ffiZENffiD SAMER Environmental Engineers & Scientists 4011 WestChase Boulevard, Suite 500 Raleigh, North Carolina 27607 NC License C-0381 RIVANNA WATER AND SEWER AUTHORITY CHARLOTTESVILLE, VIRGINIA WATER TREATMENT PLANT GAC UPGRADES 01 Eel Owl 1001an] 1ilk 101ray,TA19 NOTES: 1. FINAL DESIGN DATE OCTOBER 2014 THE SCALE BAR SHOWN BELOW H & S JOB MEASURES ONE NUMBER 32135-011 INCH LONG ON THE ORIGINAL CONTRACT DRAWING DRAWING. NUMBER NUMBER 1 C3302 FLAT FILE J J W U O m I W CO Cl - :77 W O Z W Z I 5 W O W Cn W z (- I W I Ln I CC z ol a rfj O U J U c 6 O I C`J J Q CC LO (`J N. D w w U O I I z I I L Ul LL' z z L o� G � U � T O z o, o U 400 CD i � i ~ N I �L U) s I CD Cf) I �L �2 u-) N J Q 12 o 0 0 4 3 U)L oLLJQ REV N X� 5' GRASS FILTER STRIP (WHERE SHOWN ON PLAN) 20:1 MAX SLOPE GRASSED BIORETENTION CELL PLAN VIEW DETAIL 1 _] 111 = 51 C3304 OBSERVATION WELL/CLEANOUT 4° PVC PIPE WITH THREADED, WATERTIGHT CAP THAT IS TO IBE INSTALLED WITH CLEANOUT EXTENDING 8° ABOVE GRADE VL W"INLET CREST 6° MAX PONDING Y z DEPTH 1 wv 3 6° NON -PERFORATED PVC PIPE © 1% SLOPE MIN 6° PERFORATED SCHEDULE 40 PVC © 1% SLOPE (MIN) MIN. 12° THICK WASHED #57 STONE BELOW INVERT OF LOWEST POINT OF PVC PIPE BOTTOM OF BIORETENTION CELL ELEV. = 396.50 GRASSED BIORETENTION CELL STONE PRETREATMENT CELL GRASS FILTER STRIP BIORETENTION GROUND COVER. SEE NOTE 1 36° THICK BIORETENTION FILL MEDIA. SEE SPECIFICATIONS FOR SOIL CRITERIA 12" THICK WASHED FII -r n -Annan EX 1 6 PERMANENT DIVERSION SWALE STONE PRETREATMENT CELL DETAIL 2 NTS C3304 \�/� \� �\\�Lq O 41 TYPICAL DIVERSION BERM SECTION DETAIL 3 1" = 2' C3304 SAND LAYER 6°.THICK• WASHED 1/4 -INCH PEA -GRAVEL t r IIo 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (c 0 0 0 0 0 O O O O O O O O 0 0 0 O 0 0 0 0 0 0 o O O O O O O O O O O O O O O 9I_ DESIGNED BTE DRAWN BTE CHECKED 11/14 ALBEMARLE COUNTY RESUBMITTAL #2 LMS 10/14 ALBEMARLE COUNTY RESUBMITTAL #1 LMS PROJ.ENGR. DSB 08/14 ALBEMARLE COUNTY SUBMITTAL LMS 08/14 FINAL DESIGN DSB DATE ISSUED FOR BY I APPROVED i'...... :: /.. 1 ' / GRASSED BIORETENTION CELL TYPICAL SECTION DETAIL __1 -] 1it = 21 C3304 Cy ISANTOWASSO Lic. No.045376 00;. IVAL 7 24° f ffiZEN AND SAWYER Environmental Engineers & Scientists 4011 WestChase Boulevard, Suite 500 Raleigh, Borth Carolina 27607 NC License C-0381 TO ip NOTES: 1. BIORETENTION CELLS SHALL CONFORM WITH ALL STANDARDS AND SPECIFICATIONS IN SECTION 3.11 BIORETENTION BASINS OF THE VIRGINIA STORMWATER MANAGEMENT HANDBOODK (VSMH). 2. GROUND COVER SHALL BE ESTABLISHED TO ENSURE AN 80% GROUND COVER IN THE PLANTING AREA WITHIN A THREE-YEAR PERIOD. GROUND COVER SHALL CONSIST OF A MIXTURE OF THE FOLLOWING PLUGS, PLANTED AT 12-18° ON CENTER: PANICUM VIRGATUM (SWITCHGRASS) LOBELIA CARDINALIS (CARDINAL FLOWER) SCIRPUS CYPERNINUS (WOOLGRASS) EUPATORIUM PURPUREUM (JOE PYE WEED) 3. SHRUBS SHALL BE PLANTED AT 10' ON CENTER. ONE TREE SHALL BE PLANTED FOR EVERY 250 SQUARE FEET OF BIORETENTION CELL SURFACE AREA. 4. OVERFLOW WEIR TO BE CONSTRUCTED AT PONDING DEPTH TO ALLOW FOR SHEET FLOW OF EXCESS RUNOFF. BIORETENTION CONSTRUCTION NOTES 1. INSTALL PHASE 1 EROSION CONTROL AND SEDIMENT CONTROL MEASURES FOR THE SITE. 2. GRADE EACH BIORETENTION CELL TO ELEVATION SHOWN ON PLANS. INITIALLY, THE BASIN FLOOR MAY BE EXCAVATED TO WITHIN ONE FOOT OF ITS FINAL ELEVATION. EXCAVATION TO FINISHED GRADE SHALL BE DEFERRED UNTIL ALL DISTURBED AREAS WITHIN THE WATERSHED HAVE BEEN STABILIZED AND PROTECTED. 3. COMPLETE CONSTRUCTION ON THE WATERSHED AND STABILIZE ALL AREAS DRAINING TO THE BIORETENTION BASIN. 4. REMOVE ALL ACCUMULATED SEDIMENT AND EXCAVATE BIORETENTION AREA TO PROPOSED DEPTH. USE LIGHT, TRACKED EQUIPMENT, LGP IF POSSIBLE, TO AVOID COMPACTION ON THE BASIN FLOOR. AFTER FINAL GRADING IS COMPLETED, DEEPLY TILL THE BASIN FLOOR WITH ROTARY TILLER OR DISC HARROWS TO PROVIDE A WELL-AERATED, HIGHLY POROUS SURFACE TEXTURE. 5. INSTALL THE PIPING, DRAINS, VENTS, AND INFILTRATION STONE IN ACCORDANCE WITH THE SPECIFICATIONS (VSMH SECTION 3.11). INSTALL A SIX-INCH LAYER OF WASHED, 1/4 -INCH PEA GRAVEL ABOVE THE STONE. INSTALL A 1 -FOOT LAYER OF ASTM C-33 CONCRETE SAND ON TOP OF THE PEA GRAVEL. LIGHTLY COMPACT WITH A LANDSCAPING ROLLER. 6. AFTER CONFIRMATION THAT SOIL MEETS SPECIFICATIONS (VSMH SECTION 3.11) BY PERFORMING THE REQUISITE GRADATION AND CHEMICAL TEST, FILL BIORETENTION AREA WITH PLANTING SOIL AND SAND, AS SHOWN ON THE PLANS AND DETAILED IN THE SPECIFICATIONS. 7. INSTALL VEGETATION AND GROUND COVER SPECIFIED IN THE LANDSCAPING PLAN AND THE NOTES ON THIS PAGE FOR THE BIORETENTION AREA AS WELL AS THE VSHM SECTION 3.11. 8. PLACE SOD, EC FABRIC, OR NON EROSIVE LINING (DEPENDING ON INFLOW VELOCITIES) IN THE INLET CHANNEL AND/OR FILTER STRIPS. 9. UPON AUTHORIZATION FROM DESIGNATED INSPECTOR, REMOVE ALL SEDIMENT CONTROL AND STABILIZE ALL DISTURBED AREAS. UNBLOCK CURB OPENINGS, AND PROVIDE DRAINAGE TO THE BIORETENTION AREAS. ALBEMARLE COUNTY GENERAL CONSTRUCTION NOTES FOR STORMWATER MANAGEMENT PLANS 1. ALL DAMS AND CONSTRUCTED FILL TO BE WITHIN 95% OF MAXIMUM DRY DENSITY AND 2% OF OPTIMUM MOISTURE CONTENT. ALL FILL MATERIAL TO BE APPROVED BY A GEOTECHNICAL ENGINEER. A GEOTECHNICAL ENGINEER IS TO BE PRESENT DURING CONSTRUCTION OF DAMS. 2. PIPE AND RISER JOINTS ARE TO BE WATERTIGHT WITHIN STORMWATER MANAGEMENT FACILITIES. 3. FOR TEMPORARY SEDIMENT TRAPS OR BASINS WHICH ARE TO BE CONVERTED TO PERMANENT STORMWATER MANAGEMENT FACILITIES; CONVERSION IS NOT TO TAKE PLACE UNTIL THE SITE IS STABILIZED, AND PERMISSION HAS BEEN OBTAINED FROM THE COUNTY EROSION CONTROL INSPECTOR. PLANTING LEGEND: NUMBER BOTANICAL NAME COMMON NAME SIZE TYPE 4 AMELANCHIIER CANADENSIS & CVS SHADBLOW SERVICEBERRY (WHITE PILLAR 51-61 TREE 3 HAMAMIELIS VIRGINIANA WITCH—HAZEL 4'-6' SHRUB 3 VIBURNUM DENTATUM CHICAGO LUSTREE VIBURNUM 2'-3° SHRUB 3 ILEX GLABRA INKBERRY 6'—g' SHRUB RIVANNA WATER AND SEWER AUTHORITY CHARLOTTESVILLE, VIRGINIA WATER TREATMENT PLANT GAC UPGRADES NORTH RIVANNA WTP CIVIL BIORETENTION DETAIL PLAN FINAL DESIGN DATE OCTOBER 2014 THE SCALE BAR SHOWN BELOW H & S JOB MEASURES ONE NUMBER 32135-011 INCH LONG ON THE ORIGINAL CONTRACT DRAWING DRAWING. NUMBER NUMBER 1 1 C3304 FLAT FILE . z 0 0 T C -J M CD 0 C"J N J o 0 �o z � C�; N o O 0 CD o� � N � N O �o 30 aN � CEJ O O I CO L r2 N N r,, N J � Q J "' o J 6 0 I Ln � N �w WQ o N Y :�: 01 IDD IK11 CT PERSPECTIVE VIEW RUNOFF WATER OVERFLOW WITH SEDIMENT SEDIMENT -� WIRE SCREEN 2 x 4" WOOD STUD SPECIAL APPLICATION _OCK ��LL �R FILTERED WATER $0m. 9111 CURB INLET THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS WHERE AN OVERFLOW CAPABILITY IS NECESSARY TO PREVENT EXCESSIVE PONDING IN FRONT OF THE STRUCTURE. * GRAVEL SHALL BE VDOT #3, #357 OR 4t5 COARSE AGGREGATE 0227002 CONSTRUCTION OF A SILT FENCE sF (WITHOUT WIRE SUPPORT) 1. SET THE STAKES. 2. EXCAVATE A 4"x4°° TRENCH UPSLOPE ALONG THE LINE OF STAKES 6°MAX J 1 FLOW i✓ /\�� // 4" 3. STAPLE FILTER MATERIAL TO STAKES 4. BACKFILL AND COMPACT AND EXTEND IT INTO THE TRENCH. THE EXCAVATED SOIL. FLOW SHEET FLOW INSTALLATION (PERSPECTIVE VIEW) POINTS A SHOULD BE HIGHER THAN POINT B. DRAINAGEWAY INSTALLATION (FRONT ELEVATION) 0227000 SILT FENCE BLOCK AND GRAVEL DROP INLET iP SEDIMENT FILTER WIRE SCREEN GRAVEL* FILTER r r'"'(;RETE BLOCK PERSPECTIVE VIEW OVERFLOW RUNOFF WATER WITH SEDIMENT Jn ._A SEDIMENT ELEVATION WIRE SCREEN FILTERED WATER �L ORIGINAL GROUND ELEV. *SEE PLATE 3.13-1 DROP INLET WITH GATE SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE HEAVY FLOWS ARE EXPECTED AND WHERE AN OVERFLOW CAPACITY IS NECESSARY TO PREVENT EXCESSIVE PONDING AROUND THE STRUCTURE. * GRAVEL SHALL BE VDOT #3, 4t357 OR #5 COARSE AGGREGATE. 21_011 NOTES: STONE WEIR ABOVE #357 OR #5 STONE \`- CLASS II RIP RAP 1. WIRE FENCE REINFORCEMENT FOR SILT FENCE SHALL BE A MINIMUM OF 14 GAUGE AND SHALL HAVE A MAXIMUM MESH SPACING OF 6 INCHES. 2. THE WIRE SHALL EXTEND A MINIMUM 4 INCHES INTO THE GROUND AND MUST BE FASTENED SECURELY TO THE UPSLOPE SIDE OF THE POSTS USING HEAVY DUTY WIRE STAPLES AT LEAST ONE INCH LONG, TYE WIRES OR HOG RINGS. 3. STEEL POSTS (STANDARD "U°° OR "T" SECTION) MUST HAVE A MINIMUM WEIGHT OF 1.33 POUNDS PER LINEAR FOOT AND SHALL HAVE A MINIMUM LENGTH OF 5 FEET. 4. SUPPORT POSTS OR STAKES FOR THIS TYPE OF APPLICATION SHALL BE PLACED A MAXIMUM 10 -FEET APART (SEE PLATE 3.05-1) EXCEPT WITHIN THE WET STORAGE AREA. THE WET STORAGE AREA SHALL HAVE THE POSTS OR STAKES PLACED A MAXIMUM 3 -FEET APART FOR ADDED SUPPORT. 5. SILT FENCE SHALL CONFORM TO THE CONSTRUCTION SPECIFICATIONS FOR "EXTRA STRENGTH" FOUND IN TABLE 3.05-13 AND SHALL BE CUT FROM A CONTINUOUS ROLL TO AVOID JOINTS. 6. THE FABRIC SHALL BE ENTRENCHED A MINIMUM 8" IN DEPTH AND BACK FILLED WITH CLEAN SOIL. THE SOIL SHALL BE COMPACTED TO 95 % OVER THE FILTER FABRIC. 7. THE HEIGHT OF THE SILT FENCE SHALL BE A MINIMUM OF 34 INCHES ABOVE THE ORIGINAL GROUND AND SHALL NOT EXCEED 48 INCHES ABOVE GROUND ELEVATION. 8. THE OUTLET FOR THE MODIFIED MUD TRAP SHALL CONSIST OF A STONE SECTION OF THE WIRE -SUPPORTED SILT FENCE LOCATED AT THE LOW POINT OR POINT OF CONCENTRATION FOR STORM FLOWS. FOR DRAINAGE AREAS LESS THAN ONE ACRES, THE MEASURE SHALL CONSIST OF WIRE -SUPPORTED SILT FENCE INSTALLED AS A CONTINUOUS STRUCTURE WITH CLASS Al STONE CAREFULLY PLACED ON EITHER SIDE OF THE FENCE FOR OUTLET STABILITY, NO FILTER STONE REQUIRED. FOR DRAINAGE AREAS FROM 1 TO 3 ACRES, THE MEASURE SHALL CONSIST OF THE WIRE -SUPPORTED SILT FENCE INSTALLED WITH AN OPENING FROM 4 TO 8 FEET WIDE LOCATED IN THE LOW POINT OR POINT OF CONCENTRATION FOR STORM FLOWS. THE OPENING SHALL HAVE A COMBINATION OF COURSE AGGREGATE AND RIPRAP INSTALLED TO PROVIDE FOR FILTERING/DETENTION AS WELL AS OUTLET STABILITY. THE SMALLER STONE SHALL BE VDOT #3, #357 OR #5 COURSE AGGREGATE (SMALLER STONE SIZES WILL ENHANCE FILTER EFFICIENCY) AND RIPRAP SHALL BE "CLASS L" FILTER CLOTH WHICH MEETS THE PHYSICAL REQUIREMENTS NOTED IN STD. & SPEC. 3.19, RIPRAP SHALL BE PLACED AT THE STONE -SOIL INTERFACE TO ACT AS A "SEPARATOR." THE CREST OF THE STONE OUTLET MUST BE AT LEAST 1.0 FOOT BELOW THE TOP OF THE WIRE -SUPPORTED SILT FENCE TO ENSURE THAT THE FLOW WILL TRAVEL OVER THE STONE AND NOT OVER THE FENCE. THE OUTLET SHALL BE CONFIGURED AS NOTED IN PLATE 3.13-2. 9. MAINTENANCE: A. SILT FENCE SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND AT LEAST DAILY DURING PROLONGED RAINFALL. ANY REQUIRED REPAIRS SHALL BE MADE IMMEDIATELY. B. CLOSE ATTENTION SHALL BE PAID TO THE REPAIR OF DAMAGED SILT FENCE RESULTING FROM END RUNS AND UNDERCUTTING. C. SHOULD THE FABRIC ON A SILT FENCE DECOMPOSE OR BECOME INEFFECTIVE PRIOR TO THE END OF THE EXPECTED USABLE LIFE AND THE BARRIER IS STILL NECESSARY, THE FABRIC SHALL BE REPLACED PROMPTLY. D. SEDIMENT SHALL BE REMOVED AND THE TRAP RESTORED TO ITS ORIGINAL DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED TO ONE HALF OF THE DESIGN VOLUME OF THE WET STORAGE OR EMINENT FAILURE IS EVIDENT. SEDIMENT REMOVAL FROM THE AREA SHALL BE DEPOSITED IN A SUITABLE AREA AND IN SUCH A MANNER THAT IT WILL NOT ERODE AND CAUSE SEDIMENTATION PROBLEMS. E. STONE SHALL BE REGULARLY CHECKED TO ENSURE THAT FILTRATION PERFORMANCE IS MAINTAINED. STONE CHOKED WITH SEDIMENT SHALL BE REMOVED AND CLEANED OR REPLACED. F. THE STRUCTURE SHALL BE CHECKED REGULARLY TO ENSURE THAT IT IS STRUCTURALLY SOUND AND HAS NOT BEEN DAMAGED BY EROSION OR CONSTRUCTION EQUIPMENT. THE HEIGHT OF THE STONE OUTLET SHALL BE CHECKED TO ENSURE THAT ITS CENTER IS AT LEAST 1 FOOT BELOW THE TOP OF THE FENCE. G. TEMPORARY STRUCTURES SHALL BE REMOVED WHEN THEY HAVE SERVED THEIR USEFUL PURPOSE, BUT NOT BEFORE UPSLOPE AREA HAS BEEN PERMANENTLY STABILIZED. MODIFIED MUD TRAP DETAIL NTS D2 o�ALTH OP To CG SANTOWASSO Lic. No.045376 ffiZENAND A WYER Environmental Engineers & Scientists 4011 WestChase Boulevard, Suite 500 Raleigh, North Carolina 27607 NC License C-0381 0227001 TEMPORARY SEDIMENT TRAP sT 1' VARIABLE* VARIABLE* 67 CU. YD./ACRE ni VARIABLE* 67 CU. YD./ACRE (EXCAVATED) 4° MAX. FILTER CLOTHORIGINAL GROUND ELEV. ** COARSE AGGREGATE CLASS I RIPRAP CROSS SECTION OF OUTLET CLASS I RIPRAP LEN f I NX GTH (IN FEET = ADR AREA DIVERSION DIKE COARSE AGGREGATE / \� j_ EXCAVATED AREA FILTER CLOTH / ** COARSE AGGREGATE SHALL BE VDOT #3, #357 OR 45 OUTLET (PERSPECTIVE VIEW) 0227004 PROPOSED PIPELINE OVER EXIST PIPE RIVANNA WATER AND SEWER AUTHORITY CHARLOTTESVILLE, VIRGINIA WATER TREATMENT PLANT GAC UPGRADES FLOWABLE FILL FULL TRENCH WIDTH 61_1 I PIPE 6" (NO ENCASEMENT REQUIRED FOR O.D. SPACE GREATER THAN 12")—\ PROPOSED �' EXIST PIPELINE \\., PIPE ° MIN �.. 6" MIN 6 12" MAX 12" MAX EXIST PROPOSED _ PIPE PIPELINE / 1" THICK COMPRESSIBLE JOINT FILLER MATERIAL - 0222118 WATER TREATMENT PLANTS MISCELLANEOUS STANDARD DETAILS SHEET 2 PROPOSED PIPELINE UNDER EXIST PIPE FINAL DESIGN DATE OCTOBER 2014 THE SCALE BAR SHOWN BELOW H & S JOB MEASURES ONE NUMBER 32135-011 INCH LONG ON THE ORIGINAL CONTRACT DRAWING DRAWING. NUMBER NUMBER 1 D2 FLAT FILE DESIGNED DSB DRAWN H & S CHECKED i41 PROJ.ENGR. DSB 4 11/14 ALBEMARLE COUNTY RESUBMITTAL #2 LMS 3 10/14 ALBEMARLE COUNTY RESUBMITTAL #1 LMS 2 08/14 ALBEMARLE COUNTY SUBMITTAL LMS 1 08/14 FINAL DESIGN DSB EV DATEISSUED FOR BY APPROVED o�ALTH OP To CG SANTOWASSO Lic. No.045376 ffiZENAND A WYER Environmental Engineers & Scientists 4011 WestChase Boulevard, Suite 500 Raleigh, North Carolina 27607 NC License C-0381 0227001 TEMPORARY SEDIMENT TRAP sT 1' VARIABLE* VARIABLE* 67 CU. YD./ACRE ni VARIABLE* 67 CU. YD./ACRE (EXCAVATED) 4° MAX. FILTER CLOTHORIGINAL GROUND ELEV. ** COARSE AGGREGATE CLASS I RIPRAP CROSS SECTION OF OUTLET CLASS I RIPRAP LEN f I NX GTH (IN FEET = ADR AREA DIVERSION DIKE COARSE AGGREGATE / \� j_ EXCAVATED AREA FILTER CLOTH / ** COARSE AGGREGATE SHALL BE VDOT #3, #357 OR 45 OUTLET (PERSPECTIVE VIEW) 0227004 PROPOSED PIPELINE OVER EXIST PIPE RIVANNA WATER AND SEWER AUTHORITY CHARLOTTESVILLE, VIRGINIA WATER TREATMENT PLANT GAC UPGRADES FLOWABLE FILL FULL TRENCH WIDTH 61_1 I PIPE 6" (NO ENCASEMENT REQUIRED FOR O.D. SPACE GREATER THAN 12")—\ PROPOSED �' EXIST PIPELINE \\., PIPE ° MIN �.. 6" MIN 6 12" MAX 12" MAX EXIST PROPOSED _ PIPE PIPELINE / 1" THICK COMPRESSIBLE JOINT FILLER MATERIAL - 0222118 WATER TREATMENT PLANTS MISCELLANEOUS STANDARD DETAILS SHEET 2 PROPOSED PIPELINE UNDER EXIST PIPE FINAL DESIGN DATE OCTOBER 2014 THE SCALE BAR SHOWN BELOW H & S JOB MEASURES ONE NUMBER 32135-011 INCH LONG ON THE ORIGINAL CONTRACT DRAWING DRAWING. NUMBER NUMBER 1 D2 FLAT FILE EXISTING GROUND FILTER CLOTH STONE CONSTRUCTION ENTRANCE CE EXISTING PAVEMENT 701 MIN rPAVEMENT 121 MIN* VDOT #1 COURSE AGGREGATE \` * MUST EXTEND FULL WIDTH OF INGRESS AND EGRESS OPERATION Al -3 I /-5:1 6" MIN.' A ELEVATION 701 MIN WASHRACK (OPTIONAL) B 1. POSITIVE DRAINAGE TO SEDIMENT TRAPPING DEVICE PLAN VIEW 121 MIN. MOUNTABLE BERM (OPTIONAL,') 101 MIN. 101 EXISTING MIN. PAVEMENT - 10' MIN. FILILR ULV M SECTION "A -A° REIoii \ji VVIV VI\L IL 10% SETTLEMENT 0.31 FREE BOARD DIVERSIONS �v TYPICAL PARABOLIC DIVERSION 10% SETTLEMENT 0.31 FREE BOARD - TYPICAL TRAPEZOIDAL DIVERSION 10% SETTLEMENTS 0.31 FREE BOARD J. J, SIGN FLOW DEPTH SECTION "B—B­ 0257701 vnnuv JI n�.L GRASS LINED CHANNEL (PERMANENT) STRAW W/ NETTING STRAW W/ NETTING (TEMPORARY) 3 3 TYPE 1 DITCH EROSION RETENTION BLANKET, GRASS LINED CHANNEL (PERMANENT) SEE DETAIL 0227014 DITCH EROSION RETENTION BLANKET (TEMPORARY) O O �I �I o CD 1 /CN, Cl 3 3 0 TYP E 2 C`J N 0 / 3 3 \ o_/_7�77__7 7 �J o N � - U N _ T J �Q w MAINTENANCE REQUIREMENTS: 1. PLACE CONTINUOUS RUN OF FENCE MATERIAL ON BOTH SIDES OF `� '� INSPECT WEEKLY AND AFTER EACH RAINFALL CLASS B STONE LINING PRODUCING INCH OR MORE OF RAIN. PLANS. DO NOT ATTACH FENCE MATERIAL TO TREES. J Q REPAIR OR RELACE DAMAGED FENCING IMMEDIATELY. 2. TREE PROTECTION FENCING FABRIC TO BE PLACED IN A RADIUS 12" (MIN) OF A MINIMUM OF 11.51 FROM THE TRUNK FOR EACH INCH OF 3. REPLACE ANY DAMAGED SIGNAGE IMMEDIATELY AS DBH (DIAMETER AT BREAST HEIGHT). AREA INSIDE OF FENCING NEEDED. SHOULD BE A NO ACCESS, NO ENCROACHMENT ZONE THAT z SHALL HAVE NO PARKING OF EQUIPMENT OR STOCKPILING OF TYPE 3 IF ROOTS ARE DAMAGED, CUT OFF DAMAGED AREAS TYPE II GEOTEXTILE CLEANLY AND KEEP EXPOSED ROOTS MOIST BY SPREAD PEAT MOSS, MOIST TOPSOIL, OR MOIST MULCH, NO SEPARATOR �w PAINT IS NEEDED. CONSTRUCTION PRODUCTS, PENDERGRASS, GEORGIA. TYPICAL DITCH DETAIL 5. FENCING SHALL BE INSTALLED SUCH THAT NO TREE 4. ONE SIGN PER 501 OF TREE PROTECTION FENCING SHALL READ: BARK DAMAGE OCCURS. IF SUCH DAMAGE DOES II TREE PROTECTION AREA/DO NOT ENTER AREA/PARA o o� OCCUR ONLY A CERTIFIED ARBORIST SHOULD DO ANY BARK TRACING. NO PAINT IS NEEDED. (SEE DETAIL 0227021) Nm o 3 ,W 0227011 0 I �o DESIGNED DSB � o L o DRAWN H&S iJ m G o CHECKED 01, 4 11/14 ALBEMARLE COUNTY RESUBMITTAL #2 LMS L 3 10/14 ALBEMARLE COUNTY RESUBMITTAL #1 LMS PROJ.ENGR. DSB 11 2 08/14 ALBEMARLE COUNTY SUBMITTAL LMS W 1 08/14 FINAL DESIGN DSB Lw C w < o 01Q cel x z REV DATE ISSUED FOR BY APPROVED TYPICAL VEE—SHAPED DIVERSION 211 INSTALLATION CRITERIA FOR SOIL STABILIZATION BLANKET B/M ANCHOR SLOT NOTES APPROXIMATELY 200 STAPLES REQUIRED PER 100 SQ. YDS. OF MATERIAL ROLL. ANCHOR SLOTS JUNCTION SLOTS & CHECK SLOTS f0 BE BURIED 6 TO 1211. 12° MAX. 4:1 OR FLATTER l 60 MAX. STEEPER THAN 4:11 l JUNCTION SLOT Z EDGE AND END JOINTS CHECK SLOT* TO BE SNUGLY ABUTTED (JUTE MESH WILL HAVE - _ TERMINAL FOLD STAPLED LAP JOIN TI - _ - — - LIEU OF EDGE JOINT) LAP JOINT 2° MIN. TAMP FIRMLY (JUTE MESH ONLY) ANCHOR SLOT 51 MAX. 4:1 OR FLATTER 31 MAX. STEEPER THAN 4:1 =El I =- m=-11 isT== 117 0111111 o TO 12" -i --i 177 *CHECK SLOT El i 2f. TAMP CHECK SLOT —''� 1" To 2" [FIRMLY • TR _II- I VAR. I VAR, -1 ,��ILMI-111 6" TO 12" 6" TO 8" MIN. PLAN VIEW =iii=ii=iii' =iii_ u= ii T=i p i i=i i t=] 1 -iii -i -iTu _iTi�Ti=iTi-iii-i n: =iii -iii -iii STAPLING DIAGRAM *CHECK SLOTS AT MIN. STAPLE FORMED FROM NO.11 STEEL WIRE.501 C -C INTERVALS; 8;; STAPLE MIN. LENGTH FOR SANDY SOIL -NOT REQ.ID WITH ALL G OTADI C AAIAI I CKInTU E-r)D (1T1 C7D C(lll u.,.,,r.,.,.-r...n, ,.,.�T.. JUNCTION SLOT TA1AD MAINTENANCE REQUIREMENTS: 1. INSPECT MATTING WEEKLY AND AFTER EACH RAINFALL EVEN THAT PRODUCES INCH OR MORE OF RAIN. REPAIR OR REPLACE IMMEDIATELY AS NECESSARY. 2. GOOD CONTACT WITH THE GROUND MUST BE MAINTAINED, AND EROSION MUST NOT OCCUR BENEATH THE MATTING. 3. ANY AREAS OF THE MATTING THAT ARE DAMAGED OR NOT IN GOOD CONTACT WITH THE GROUND SHALL BE REPAIRED OR REPLACED AND STAPLED IMMEDIATELY. 4. IF EROSION DOES OCCUR, THE PROBLEM SHALL BE FIXED AND ERODED AREA REPAIRED AND PROTECTED FROM FURTHER DAMAGE. 5. CONTINUE MONITORING MATTED AREAS UNTIL PERMANENT GROUND COVER HAS BEEN ESTABLISHED. ROLLED EROSION CONTROL MATTING (RECM) DETAIL NTS D3 NLTH OF SANTOWASSO Lic. No.045376 �T � O ..sONAL �. 6" TO 12" 27014 TERMINAL FOLD .00 TAAAn MDAAI Y 2" CONSTRUCTION SPECIFICATIONS 1. AREA SHALL BE CLEARED AND GRUBBED ACCORDING TO SPECIFICATIONS. 2. SEED BANK ACCORDING TO PLAN SPECIFICATIONS. 3. SECURE MATS AT THE TOP OF THE SLOPE BY TOEING IT IN AND REINFORCING IT WITH A ROW OF AT LEAST FIVE (5) STAPLES, SPACING EACH ONE APPROXIMATELY 811 APART. 4. PLACE STAPLES C-8° APART ALONG LENGTH OF MAT BLANKET TO SECURE TO THE SOIL SURFACE. ALL STAPLES MUST BE FLUSH TO THE SURFACE. MZEN AND SAWYER Environmental Engineers & Scientists 4011 WestChase Boulevard, Suite 500 Raleigh, North Carolina 27607 NC License C-0381 FIL (Of I V J I I V I V J I EXISTING TREE METAL °T 11 POST —OR WOODEN 2X4 FENCING FABRIC ORANGE MIRASAFE 4.21' EXISTINGC::1 CD=8 GRADE TC MIRAFI MIRASAFE OR AN APPROVED EQUAL. STAPLE TO VERTICAL 2X4 OR TIE TO METAL °T° POSTS. NOTES: MAINTENANCE REQUIREMENTS: 1. PLACE CONTINUOUS RUN OF FENCE MATERIAL ON BOTH SIDES OF 1. INSPECT WEEKLY AND AFTER EACH RAINFALL IMMEDIATE WORK ZONE IN WOODED AREAS AS SHOWN ON THE PRODUCING INCH OR MORE OF RAIN. PLANS. DO NOT ATTACH FENCE MATERIAL TO TREES. 2. REPAIR OR RELACE DAMAGED FENCING IMMEDIATELY. 2. TREE PROTECTION FENCING FABRIC TO BE PLACED IN A RADIUS OF A MINIMUM OF 11.51 FROM THE TRUNK FOR EACH INCH OF 3. REPLACE ANY DAMAGED SIGNAGE IMMEDIATELY AS DBH (DIAMETER AT BREAST HEIGHT). AREA INSIDE OF FENCING NEEDED. SHOULD BE A NO ACCESS, NO ENCROACHMENT ZONE THAT SHALL HAVE NO PARKING OF EQUIPMENT OR STOCKPILING OF 4. IF ROOTS ARE DAMAGED, CUT OFF DAMAGED AREAS SUPPLIES. CLEANLY AND KEEP EXPOSED ROOTS MOIST BY SPREAD PEAT MOSS, MOIST TOPSOIL, OR MOIST MULCH, NO 3. "MIRASAFE" HIGH STRENGTH POLYMER GEOGRID FABRIC BY MIRAFI PAINT IS NEEDED. CONSTRUCTION PRODUCTS, PENDERGRASS, GEORGIA. 5. FENCING SHALL BE INSTALLED SUCH THAT NO TREE 4. ONE SIGN PER 501 OF TREE PROTECTION FENCING SHALL READ: BARK DAMAGE OCCURS. IF SUCH DAMAGE DOES II TREE PROTECTION AREA/DO NOT ENTER AREA/PARA OCCUR ONLY A CERTIFIED ARBORIST SHOULD DO ANY BARK TRACING. NO PAINT IS NEEDED. PROTECCION DE LOS ARBOLES/PROHIBIDO ENTRAR TREE PROTECTION BARRIER FENCE 0227033R ROCK CHECK DAM co 2 ACRES OR LESS OF DRAINAGE AREA: VDOT #1 Ca. --------- FL( - .-- FL( FIL (Of (DOWNSTREAM VIEW) 2-10 ACRES OF DRAINAGE AREA: VDOT #1 GOAMOF AnnnrnATr FL( (DOWNSTREAM VIEW) RIVANNA WATER AND SEWER AUTHORITY CHARLOTTESVILLE, VIRGINIA WATER TREATMENT PLANT GAC UPGRADES 0227003 1�L!'1JJ I I\If I\/1f I_�14,�i1 21In '',1.r';.� {�E l ND, FULL, I ,114 r I ar,f fr�l , r SO,^Fr E31vR�-u`_'`�.-s ANID ECES E.._..]. �N IMI SETIONA—A A iiiln i mi t Nvattn° tap of 1 melt nms[ be lashed k6th a a6mm tt 1 i h balkodc 111(off vah -e i�,q)pl;> hlg a i l ho e with ,I (f ameta of 1.5 tiidke;� for a6gtvgte tt tAtcttt fat sgtue_ Was4k watet°imist be c.wtied r, way fjom tate evtt°auce to au apprwved >-,ettbis; ar, i to reniuve sed ment.. A11, ec6ient �&oll tic piev ented. front PAVED WASH RACK iNO ^:.. PAVED CONSTRUCTION ENTRANCE 0257701 WATER TREATMENT PLANTS MISCELLANEOUS STANDARD DETAILS SHEET 3 FINAL DESIGN DATE OCTOBER 2014 THE SCALE BAR SHOWN BELOW H & S JOB MEASURES ONE NUMBER 32135-011 INCH LONG ON THE ORIGINAL CONTRACT DRAWING DRAWING. NUMBER NUMBER 1 D3 FLAT FILE PFIL.E I_�14,�i1 21In '',1.r';.� {�E l ND, FULL, I ,114 r I ar,f fr�l , r SO,^Fr E31vR�-u`_'`�.-s ANID ECES E.._..]. �N IMI SETIONA—A A iiiln i mi t Nvattn° tap of 1 melt nms[ be lashed k6th a a6mm tt 1 i h balkodc 111(off vah -e i�,q)pl;> hlg a i l ho e with ,I (f ameta of 1.5 tiidke;� for a6gtvgte tt tAtcttt fat sgtue_ Was4k watet°imist be c.wtied r, way fjom tate evtt°auce to au apprwved >-,ettbis; ar, i to reniuve sed ment.. A11, ec6ient �&oll tic piev ented. front PAVED WASH RACK iNO ^:.. PAVED CONSTRUCTION ENTRANCE 0257701 WATER TREATMENT PLANTS MISCELLANEOUS STANDARD DETAILS SHEET 3 FINAL DESIGN DATE OCTOBER 2014 THE SCALE BAR SHOWN BELOW H & S JOB MEASURES ONE NUMBER 32135-011 INCH LONG ON THE ORIGINAL CONTRACT DRAWING DRAWING. NUMBER NUMBER 1 D3 FLAT FILE