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WPO202000038 Plan - Revision WPO VSMP 2020-09-21
GENERAL NOTES OWNER. 06100-00-00-134AO ALBEMARLE BANK & TRUST % BB&T PROPERTY TAX COMPLIANCE PO BOX 167 WINSTON-SALEM, NC 27102 APPLICANT- SOUTHEASTERN RETAIL DEVELOPMENT, LLC 2050 CIRCLE HWY. 30A WEST BLDG. M-1 UNIT 231 SANTA ROSA BEACH, FL 32459 ENGINEER: COLLINS ENGINEERING 200 GARRETT ST. SUITE K, CHARLOTTESVILLE, VA 22902 TELEPHONE (434)293-3719 FAX (434)293-2813 CONTACT. MR. SCOTT COLLINS, P.E. scott@collins-engineering.com TAX MAP NO. 06100-00-00-134AO (D.B. 646/ PG. 508) AREA 0.93 AC ZONING PLANNED DEVELOPMENT SHOPPING CENTER (PD-SC) WITH OVERLAY DISTRICTS (ENTRANCE CORRIDOR (EC), AIRPORT IMPACT AREA (AIA), AND MANAGED SLOPES) ZMA (ZMA2019-00014) APPROVED BY THE BOS ON APRIL 15, 2020 SETBACKS FRONT BUILDING SETBACK: 10' MINIMUM & 30' MAXIMUM SETBACK FROM ROUTE 29 SIDE BUILDING SETBACK: NONE REAR BUILDING SETBACK: NONE PARKING SETBACK: 10' PARKING SETBACK FROM ROUTE 29 BUILDING HEIGHT MAXIMUM BUILDING HEIGHT.- 65' PROPOSED BUILDING HEIGHT. 27'-4" NOTE: ANY STRUCTURE EXCEEDING 35' IN HEIGHT SHALL BE SET BACK FROM ANY STREET R/W. IN ADDITION TO THE MINIMUM YARD REQUIREMENT A DISTANCE OF 2' FOR EACH 1' IN BUILDING HEIGHT. PROPOSED USE PROPOSED 3,000 SF COMMERCIAL RETAIL / FURNITURE BUILDING IN PHASE L PROPOSED SUBDIVISION: NEW PARCEL: 0.28 ACRES RESIDUE PARCEL (TMP61-134A): 0.61 ACRES R/W DEDICATION AREA: 0.04 ACRES TOPO & SURVEY SURVEY AND BOUNDARY INFORMATION PROVIDED BY ROUDABUSH, GALE & ASSOCIATES, INC. AND FIELD SURVEY DONE IN OCTOBER, 2019. DATUM SET BY SURVEYOR. DATUM NAD 83 DATUM ADJACENT PROPERTY OWNERS- SEE EXISTING CONDITIONS, SHEET 2. EXISTING VEGETATION THE SITE IS FORESTED. CRITICAL SLOPES IN ACCORDANCE WITH THE ALBEMARLE COUNTY CRITICAL SLOPES COUNTY MAPPING, MANAGED' CRITICAL SLOPES EXIST ON THE PARCEL. THE MANAGED SLOPES ARE SHOWN ON THE EXISTING CONDITIONS SHEETS AND GRADING AND DRAINAGE PLAN SHEET. WATERSHED THIS DEVELOPMENT LIES WITHIN THE MOORES CREEK WATERSHED. THE SI7E IS NOT LOCATED WITHIN A PUBLIC WATER SUPPLY RESERVOIR WATERSHED, IT IS LOCATED DOWNSLOPE FROM THE SOUTH FORK RIVANNA WATER SUPPLY WATERSHED. FLOODPLAIN/WPO BUFFERS THERE ARE NO 100-YEAR FLOODPLAINS OR WPO BUFFERS LOCATED ON THIS SI7F PER FEMA MAP PANEL #51003CO2880 DATED FEBRUARY 4, 2005 & COUNTY GIS, RESPECTFULLY. ALSO NOTE THE PARCEL IS OUTSIDE THE LIMITS OF THE FEDERAL & STATE DAM BREAK INUNDAT70N ZONES PER COUNTY GIS DATA. SITE ACCESS: THE SI7E ACCESS FOR THE PARCEL IS PROVIDED VIA ROUTE 29 SEMINOLE 7RAIL. A PARKING AND ACCESS EASEMENT WILL BE RECORDED ACROSS THE RESIDUE PARCEL 7MP61-134A FOR THE BENEFIT OF THE NEW PARCEL CREATED WITH A SUBDIVISION PLAT. RETAINING WALLS: RETAINING WALLS ARE PROPOSED WITH THIS SI7E PLAN, SEE GRADING SHEET 5. RETAINING WALLS SHALL NOT EXCEED 6 FEET IN HEIGHT NOTE: RETAINING WALLS ABOVE 3 FT WILL REQUIRE A BUILDING PERMIT AND RETAINING WALLS ABOVE 4 FT WILL REQUIRE STAMPED ENGINEERING PLANS. LIGHTING: THE PROPOSED LIGHTING PLAN HAS BEEN INCLUDED, SEE SHEET 9. EACH OUTDOOR LUMINAIRE EQUIPPED WITH A LAMP THAT EMITS 3,000 OR MORE 1NI77AL LUMENS SHALL BE A FULL CUTOFF LUMINAIRE AND SHALL BE ARRANGED OR SHIELDED TO REFLECT LIGHT AWAY FROM ADJOINING PROPER77ES AND AWAY FROM ADJACENT ROADS. THE SPILLOVER OF LIGHTING FROM LUMINAIRES ONTO PUBLIC ROADS AND ADJACENT PROPERTIES SHALL NOT EXCEED ONE-HALF FOOTCANDLEE, LANDSCAPING: A LANDSCAPING PLAN HAS BEEN INCLUDED IN ACCORDANCE WITH ALBEMARLE COUNTY ORDINANCE SECTION 32.7.9, SEE SHEET 8. STREET TREES HAVE BEEN PROVIDED WITH THE LANDSCAPING DESIGN ALONG THE FRONTAGE OF THE PROPERTY EVERY 40' O.C. TRASH COLLECTION: AN ENCLOSED DUMPSTER SCREENED WITH LANDSCAPING IS PROVIDED ON THE PLANS. DUMPSTER ENCLOSURE MATERIAL SHALL BE A WOODEN TRASH ENCLOSURE LOCATED BEHIND THE BUILDING. SEE SHEET 6 FOR DETAILS UTILITIES: PUBLIC WATER AND SANITARY SEWER UTILITIES WILL BE EXTENDED TO THE PROPERTY FOR CONNECTIONS TO THE PUBLIC UTILITIES. STORMWATER MANAGEMENT FACILITY: STORMWATER MANAGEMENT WILL BE ACHIEVED FOR THE SI7E WITH AN UNDERGROUND DETENTION FACILITY AND A DETENTION BASIN FOR WATER QUAN77TY CONTROL AND PURCHASE OF NUTRIENT CREDITS FOR THE WATER QUALITY. ESTIMATED EMPLOYEES IT IS ANTICIPATED THAT APPROXIMATELY 2 EMPLOYEES WILL BE NEEDED AT THE LARGEST SHIFT. PARKING LOT/TRAVELWAYS: CURB & GUTTER UTILITIES (WATER AND SEWER): COUNTY PUBLIC WATER AND SANITARY SEWER AGRICULTURAL/ FORESTAL DISTRICT: NONE IMPERVIOUS AREAS: BUILDING - PHASE I = 3,000 SF, PAVEMENT -5,100 SF SIDEWALK -800 SF OPEN SPACE: NONE UNDEVELOPED AREA: 20,800 SF - FUTURE PHASE lI DEVELOPMENT AREA PARKING REQUIRED: 1 SPACE/400sf FOR RETAIL SALES AREA = 1 SP/400sf x 3,000sf = 8 SPACES 1 LOADING SPACE / 8,000 SF = 1 LOAD SPACE REQUIRED PROVIDED: 10 PARKING SPACES (THIS INCLUDES 1 HANDICAP SPACE) & (1) LOADING SPACE BURIAL SITE.- NO CEMETERIES WERE FOUND DURING FIELD INVESTIGATION OF THE SITE. IMPERVIOUS AREAS: 8,900 SF (0.20 AC) TOTAL PAVED PARKING AND CIRCULATION AREA: 5,100 SF FIRE FLOW: AN EXIS77NG FIRE HYDRANT IS LOCATED ON THE ADJACENT PROPERTY, AS SHOWN AND LABELED ON SHEET 4. THIS FIRE HYDRANT WILL PROVIDE FIRE PROTECTION FOR THE PROPOSED BUILDING. SLEEP NUMBER - CHARLOTTESVILLE VSMP PLAN RIO MAGISTERIAL DISTRICT ALBEMARLE COUNTY, VIRGINIA G5 SEMINOLE TRAIL — ROUTE 29 VAR. WIDTH PUBLIC RIGHT-OF-WAY HIGHWAY PLAT BOOK I PAGE 227) 950'+/- TO BRANCHLANDS BLVD N RJW DEDTCATi0 9 ) 4 ACRES — Ir ` NEW PARCEL TOTAL AREA: 0.28 ACRES u TMP 61-134 N/F CAVALIER COUNTRY BANK ZONING - COMMERCIAL OFFICE USE - BANK DB 527 PG 43 DB 327 PG 228 (PLAT) DB 68 PG 456 (PLAT) NJ 0 TMP 61-129 N/F J.C. PENNENNEY PROPERTIES, INC ZONING - PLO E - SHOPPING CENTER DB 1908 PG 726 DB 4355 PG 625 DESCRIPTION IN DEED OF TRUST) NOTES: CONTRACTOR SHALL VERIFY LOCATION AND ELEVATION OF ALL UNDERGROUND UTILITIES SHOWN ON PLANS IN AREAS OF CONSTRUCTION PRIOR TO STARTING WORK. CONTACT ENGINEER IMMEDIATELY IF LOCATION OR ELEVATION IS DIFFERENT FROM THAT SHOWN ON THE PLANS, IF THERE APPEARS TO BE A CONFLICT, AND UPON DISCOVERY OF ANY UTILITY NOT SHOWN ON THE PLANS. THE CONTRACTOR MUST LOCATE ALL SURFACE AND SUB -SURFACE UTILITIES PRIOR TO ANY WORK ONSITE. ANY SIDEWALK AND/OR CURB DAMAGE IDENTIFIED IN THE SITE VICINITY DUE TO PROJECT CONSTRUCTION ACTIVITIES AS DETERMINED BY THE VDOT INSPECTOR SHALL BE REPAIRED AT THE CONTRACTOR'S EXPENSE. SIDEWALK WILL BE REPLACED AT THE DIRECTION OF THE VDOT INSPECTOR. ANY EXISTING SIDEWALK THAT IS CURRENTLY DAMAGED AND IN NEED OF REPAIR OR NOT IN COMPLIANCE WITH CURRENT STANDARDS SHOULD BE REPLACED AS PART OF THIS PROJECT AS WELL. IN ADDITION, ANY EXISTING CG-12S ALONG THE PERIMETER OF THE SITE SHOULD BE UPGRADED TO MEET CURRENT STANDARD IF NEEDED. ALL SIGNING AND PAVEMENT MARKINGS SHALL BE CONSISTENT WITH THE MUTCD. ALL WATER LINES, SEWER LINES, AND FIRE LINES FROM THE MAIN TO THE STRUCTURE MUST HAVE A VISUAL INSPECTION PERFORMED BY THE BUILDING DEPARTMENT. TMP 61-134A N/F ALBEMARLE BANK AND TRUST COMPANY 0.908 ACRES ZONING - POSC RESIDUE PARCEL TMP 61-134A TOTAL AREA: 0.61 ACRES SHEET LAYOUT SCALE: 1" = 30' TRAFFIC GENERATION CALCULATIONS: TRIP GENERATION BASED ON ITE TRIP GENERATION MANUAL 10TH EDITION PROPOSED 3,000 SF RETAIL STORE (FURNITURE STORE) (CODE 890) ADT: 19 VPD (10 ENTER/9 EXIT) AM PEAK: 1 VEHICLES PER HOUR PM PEAK: 2 VEHICLES PER HOUR ENTRANCE CORRIDOR NOTES AND REQUIREMENTS: 1. VISIBILITY OF ALL MECHANICAL EQUIPMENT FROM THE ENTRANCE CORRIDOR SHALL BE ELIMINATED. 2. ALL SIGNS FOR THE SITE SHALL BE REVIEWED AND APPROVED BY ARB UNDER A SEPARATE SIGN APPLICATION. BUILDING NOTES: 1. PROPOSED BUILDING HEIGHT (PHASE 1): MINIMUM HT.=20' 2. PHASE I BUILDING FOUNDATION TO BE CONSTRUCTED TO SUPPORT MULTIPLE STORIES. 0 E P El TMP 61-129 N/F J.C. PENNEY PROPERTIES, INC ZONING - PUD USE - SHOPPING. DB 1908 PG 726 DB 4355 PG 625 DESCRIPTION IN DEED OF TRUST) I10 PROJECT SITE VICINITY MAP Sheet List Table - SITE PLAN Sheet Number Sheet Title 1 COVER 2 EXISTING CONDITIONS & DEMOLITION PLAN 3 EROSION & SEDIMENT CONTROL PLAN NARRATIVE & DETAILS 4 PHASE I EROSION & SEDIMENT CONTROL PLAN 5 PHASE II EROSION & SEDIMENT CONTROL PLAN 6 PHASE III EROSION & SEDIMENT CONTROL PLAN 7 STORMWATER MANAGEMENT PLAN 8 STORMWATER MANAGEMENT DETAILS R LEGEND I TOTAL NUMBER OF SHEETS L_ EXISTING CULVERT CUL VERT u Q DROP INLET & S7RUCTURE NO. CURB CURB & GUTTER PROPOSED PAVEMENT EC-3A DITCH 6.. DEPTH OF EC-3A DITCH EC-2 DITCH 6" DEPTH OF EC-2 DITCH EARTH DITCH DRIVEWAY CULVERT BENCH MARK CLEARING LIMITS T VDOT STANDARD STOP SIGN 200- - - - EXISTING CONTOUR zoo PROPOSED CONTOUR 240.55 PROPOSED SPOT ELEVATION IBC DENOTES TOP/BACK OF CURB T/B DENOTES TOP OF BOX 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 SCOTT fR. 01n-LNNS Z Lic. No. 035791 . SS 9/18/20 - O` SrONAL ` sv p zwf u z0 m z AV / Ln 0 Z n Luin z ZLug d a wOU) CO. LuzaoH w cecr A r ON WWII SCALE AS SHOWN SHEET NO. 1 7/ STRM MH TOP=464.63 INV IN (24")=458.43 INV IN (18")=458.33 INV OUT=458.23 o 3 ST -'ST ST, 2.2-/-L.F. 1 8" RCP STRM DI 10P-466 13 _ r - INV OUT=460.38 0 /TH Oft SCOTT R. LLINSIS17 ` I' i',F _,T °,T_". ROUTE 29 I 0 I U Lic. No. 035791 o v'EvF. WIDTH E'UPuC RIGHT-OF-WAY I 7/17/20 I-IIGHWAY PLAT/BOOK PAGE 227) SIRM MH I / STRM MHI TONAL V, TOP=466.85 13.34 L.F. 78' RCP cs 0 TOP-476I.76 / 8 77% P PORTION OF EXISTING FX 1 (ST M DI) O J INV IN=470.21 INV IN (18"x2)=460.75 STRM MH SIDEWALK TO BE TOP=471.9 / _ / NV OUT 470.26 I / INV IN (24")-460.70 ' TOP=469.64 REMOVED \ INV IN-456.34 INV OUT=460.65 STRM DI / Y •,INV IN=464.09 950 +/- T0- \ INV OUT=466.09- j F TOP=466.42.. NV.,OUT=464.09 BRANCHLANDS BLVD \I W YW 0 INV OUT=461 :92 \ \ W v R> S - 39% , - 5 7 64.32 RCST 4 4, s Sr T ST ST ST .ST ST _ .- , Si . 4 /_I: 24 " RCP 2.4% -- . • l J 8.os L.F. 24" RCS-v 2.8 IRS _ N 00" E 125.56'- - - - - o a 35` 00' Z G S M D m 0 % IF © - ' 1 r TOP=478.75 / M W - - - - I, 7 .17 L.F. 24" RCP . U z 0 ---- w EXISTING SIDEWALK TO F @ 2.58% Z o gEX. VDOT R/W - BE REMOVED 6'1 Y T=472.10 oEXISTINGWATERLINE Y TW-74.5 T 1 29 / O AP STRM GRATE, EP-70. -- I/F J.C. PENNEY / / J " TOP-46F'.86 OP RT < 1 NNE O-UT=463.59 _ NI / PR E IEs,TN-C / / 70 NG PUD z EXISTING FIRE HYDRANT / .-- - i % USES= SHOPPING CENTER ti 58 L.F. 18" / = EP-71.2 BLOCK - / - C DB 1908 PG 726 W DB 435 PG -6.25@s.2y, i wALL Y I , , E,u / 4 / _ 1 -(DESCRIPTION IN / EXISTING CURB AND - GUTTER TO BE REMOVED / / - - m. DEED OF TRUST / EP-71.7 / EXISTING BLOCK WALL EX. P/L `•", II u / / TO REMOVED a > / - CD 7` ! V - --_ - / Il N - _rl w- -- - - EP-72. 1 o / ctw00 TMP 61-134 SYMBOL LEGEND / N/ F CAVALIER COUNTRY RYBANK ( _ _MANAGED SLOPES IRS IRON SIGN ZONING SET ZONING - COMMERCIAL OFFICE UTILITY 156LE USE - BANK j LIGHT POLE DB 527 PG 43 Y 4 -- - --- - -- - - / / GUY WIRE i DB 327 PG 228 STORMMH (PLAT) ELECTRIC VAULT DB 468 PG 456 (PLAT) RCP REINFORCED CONCRETE PIPE U-49 CC& c CONCRETE CURB &GUTTER h r p _ I Q / \ M Z FENCE II I Tmp l TL-4-A- - _ a > / / / L OVERHEAD ELECTRIC UTILITY / N%F AL$EMA LE _ANK fTl I -- - - d / / /r / - \ \ WATERLINE NIl TRUST COMPANY Al- T ` MANAGED- -- SLOPES -- _ - W 0.908 ACRE-S - J 0CN llllll - zaN+NG=PDsc / / / / / / - - - - - - - J O it -- U' - - / / / / / - F- NOTES: / o THIS PLAT HAS BEEN PREPARED WITH THE BENEFIT OF A TITLE REPORT BY STEWART TITLE GUARANTY COMPANY, COMMITMENT NUMBER 19000090147, - MANAGED SLOPES - 2. ALL DEED AND PLAT REFERENCES SHOWN ARE RECORDED IN THE ALBEMARLE 1 EFFECTIVE DATE AUGUST 19, 2019 8:00 A.M. w W COUNTY COURTHOUSE. / i 0 3 FOR ACTUALLFELDCELSSHOWN SURVEY DONEASN, THIS PLAT HAS OR ALL PARCELS BEEN HOWNPREPARED THISFROMPLAT -= _ - '06 HAS BEEN PREPARED FROM AN ACTUAL FIELD SURVEY DONE AS PER THE DATE OF THIS PLAT USING MONUMENTS FOUND TO EXIST AT THE TIME OF THIS SURVEY, IRON ROD J THERE ARE NO VISIBLE EASEMENTS OR ENCROACHMENTS EXCEPT AS SHOWN, - UND__ _ SUBJECT TO NOTE 1. (OLD) / o Q Q O 4. THETOPOGRAPHYBYRGASHOWNISBASEDONAFIELDSURVEYCOMPLETEDBYOCTOBER17, 2019. U T H 5. THE AREA SHOWN HEREON APPEARS TO BE LOCATED WITHIN FLOOD ZONE X - ` ' 2 UNSHADED), WHICH IS AN AREA OF MINIMAL FLOOD HAZARD AS SHOWN ON FEMA / '1 1 ` W U NFIP COMMUNITY MAP PANEL NO. 51003CO278D, EFFECTIVE FEBRUARY 4, 2005. J z THIS DETERMINATION HAS BEEN MADE BY GRAPHIC METHODS ONLY. AN ELEVATION / STUDY HAS NOT BEEN PERFORMED AS A PORTION OF THIS PROJECT. / % 1 1 \ W u 6. SUBJECT PROPERTY IS ZONED PD-SC (PLANNED DEVELOPMENT SHOPPING CENTER). PER ALBEMARLE COUNTY CIS, SUBJECT PROPERTY LIES WITHIN THE \LJJ FOLLOWING OVERLAY DISTRICTS: AIRPORT IMPACT, ENTRANCE CORRIDOR, AND I V A \ TVP 61 -129 610 ul Z MANAGED STEEP SLOPES \ 2 - AN/F J.G. PENNEY 7. THE PARCEL SHOWN WILL BE SERVICED BY PUBLIC WATER AND SEWER. \ PROPERTIES, INC 8. THERE ARENOKNOWNIDENTIFICATIONSOFGRAVES, OBJECTS, OR STRUCTURES I \ / V \ _ /. '.. ' O A ' // / D x MARKING A PLACE OF HUMAN BURIAL ON THE SUBJECT PROPERTY. \ \ ZOO I. C PU6 _ \ F4 I 7 9. THE MINIMUM BUILDING SETBACKS ARE PER ALBEMARLE COUNTY CODE. US - S 0\PPING CENTER - - -' 811 \ _ ! /j/ f z x 9 , 10. THE SUBJECT PARCEL HAS LEGAL ACCESS TO U.S. ROUTE 29 (SEMINOLE TRAIL). \ Utz \1 908 PG 726 // W L PAT OF RECORD FOR SUBJECT PARCEL SHOWS THE NORTHWEST AND SOUTHEAST \ DB 4 55 PG\625 SIDE LINES BEING 214.5' AND 307.5' RESPECTIVELY. FIELD FOUND EVIDENCE OF a DESC IPTION N / / / W W ADJOINING PARCELS APPEARToREFLECTA5' RIGHT-OF-WAY TAKE ALONG - _ \ \ V DEED OF TRUST / / P'uj OF THIS SURVEY, PARCEL AREAS AND LEGAL DESCRIPTION INCLUDES THE 5' STRIP T I \ \ \ SEMINOLE TRAIL - U. S. ROUTE 29 BUT A RIGHT-OF-WAY TAKE WAS NOT FOUND IN THE TITLE REPORT OR IN A SEARCH OF COUNTY RECORDS. FOR THE PURPOSE AS A PORTION OF THE SUBJECT PROPERTY. A / LEGEND: _ METAL ARROW MF IF N PIN FOUND METES AND BOUNDS DESCRIPTION: _---- \ / IRON - 0 MF MONUMENT FOUND BEGINNING AT A POINT (MARKED P.O.B.), SAID POINT BEING SITUATED IN THE \ / WITH FENCE CID CONCRETE PAD EASTERN RIGHT-OF-WAY OF U.S. ROUTE 29, SEMINOLE TRAIL. THENCE, ALONG THE \ \ \ \ / / POST CW CONCRETE WALK EASTERN RIGHT-OF-WAY OF SEMINOLE TRAIL N 35°00'00" E FOR A DISTANCE OF T (0.77' WEST OF DI STORM SEWER DROP INLET 125.56 FEET TO POINT. THENCE LEAVING SAID SEMINOLE TRAIL S 55°11'57" E FOR \ \ _ _ \ CORNER) bi GUY GUY WIRE AND ANCHOR A DISTANCE OF 307.50 FEET, PASSING AN IRON PIN FOUND (IF) AT 5.45 FEET, A \ \ - _ STRM DI ' ' % _ u LP LAMP POST CORNER OF TMP 61-129, N/F J.C. PENNEY PROPERTIES, INC. AND CONTINUING \ \ TOP=505.57 G c _ MH MANHOLE WITH SAID J.C. PENNEY PROPERTIES, INC. TO A METAL ARROW FOUND ON \ OH OVERHEAD UTILITIES 64°38'24' W FOR A DISTANCE OF 197.84 FEET TO AN IRON PIN FOUND IF SAID \1 \ PhOR,IZONTAL GRAPHIC SCALE NV=500.98 GTa SL SIGNAL POLE & BASE MONUMENT MF . THENCE CONTINUING WITH SAID J.C. PENNEY PROPERTIES, INC. S \ \ \ JOB NO. O v A 192036 SN SIGN WIDN PIN TH LIMP 6EING34 COMMON AVAOERECOONTRYI BANK. PENNEYPROPERTIES, LEAOVNGTSAIDIN C AND \ \ 25.4 L. 15' R P 5 FE:F' SS SANITARY SEWER \ \ \\ zo o \ 0 20 ao as SCALE ST UTILITY POLE PENNEY PROPERTIES, INC.AND CONTINUING WITH SAID CAVALIER COUNTRY BANK N \ \ \ \ V A = / 7 UP UTILITY POLE \ 1 ' 1"=20' 42°48'10" W FOR A DISTANCE OF 214.50 FEET, PASSING A COMMON CORNER WITH \ \ \ / VLT UTILITY VAULTV \ 1 WL MARK WATERLINE SAID CAVALIER COUNTRY BANK AT 209.56', AND LEAVING SAID CAVALIER COUNTRY \ \ \ \ ( IN FEET) STRM H YH YARD HYDRANT BANK TO THE POINT AND PLACE OF BEGINNING, HAVING A TOTAL AREA OF 0.908 \ \ \ 1 inches 20 ft. OP=504. STRM / SHEET No. v v Y 50'/ J ACRES OR 39,547 SQUARE FEET, MORE OR LESS. \ \ NV IN=49 1 2 INJ-5.0. 90 C; EROSION & SEDIMENT CONTROL EROSION CONTROL NOTES DESCRIPTION OF EROSION & SEDIMENT EROSION CONTROL NOTES & NARRATIVE MEASURES. 1. THE PLAN APPROVING AUTHORITY MUST BE NOTRED ONE WEEK PRIOR TO THE CONTROL MEASURES: PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND PROJECT DESCRIPTION. STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE IN DISTURBING ACTIVITY, AND ONE WEEK PRIOR To THE FINAL INSPECTION. THE PURPOSE OF THIS LAND DISTURBANCE ACTIVITY IS FOR THE CONSTRUCTION OF A PARKING LOT AND A 3,000 ACCORDANCE WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. 2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND EROSION AND SEDIMENT CONTROL MEASURES: SF RETAIL BUILDING. THIS PROJECT PROPOSES TO DISTURB 1.74 cc. OF LAND. THE PROJECT WILL BEGIN ITSSTRUCTURALPRAC7CESUSEDINTHISSECTIONCONSISTOFTHEFOLLOWINGMAINTAINEDACCORDINGTOMINIMUMSTANDARDSANDSPECIFICATIONSOFTHEVIRGINIAITISANTICIPATEDTOUSEACONSTRUCTIONENTRANCE, RIPRAP, OUTLET PROTECTION, CONSTRUCTION WITH THE PROPOSED ESC MEASURES IMMEDIATELY FOLLOWING PLAN APPROVAL, WHICH IS Jot SAFETY FENCE., EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR DIVERSIONS, SEDIMENT TRAPS, AND SILT FENCES TO CONTROL SURFACE DRAINAGE. ANTICIPATED TO BE IN THE FALL OF 2020. THE WORK IS ANTICIPATED TO BE COMPLETED WITHIN 12 MONTHS AND A PR07EC77VE BARRIER INSTALLED TO PREVENT URE. TO AN EROSION CONTTOLCONTROL 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. TEMPORARY SEEDING WILL BE USED IMMEDIATELY FOLLOWING ALL LAND DISTURBANCE TO CONCLUDE IN 174E FALL OF 2021. TO PROHIBIT 7HE UNDESIRABLE USE OF AN EROSIONESS MEASURE BY THE p BLIC J. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR ACTIVITIES. TEMPORARY STOCKPILE AREAS ARE NOT BE REQUIRED WITH THIS PROPOSED APPLICABLE TO ANY CONTROL MEASURE OR SERIES OF MEASURES WHICH CAN BE 4. AS THE FIRST STEP IN CLEARING. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE DESIGN. SHOULD FIELD ADJUSTMENTS NECESSITATE A SMALL STOCKPILE AREA, IT SHALL EXIS77NG S17E COND/77ONS.• 774E AREA OF THE PROPOSED DEVELOPMENT IS VACANT LOT MOSTLY COVERED BY DENSE VEGETATION. THE SITECONSIDEREDUNSAFEBYVIRTUEOFPOTENTIALACCESSBYTHEPUBLIC. MAINTAINED ON THE SITE AT ALL TIMES. BE DISCUSSED WITH THE ESC INSPECTOR AHEAD OF TIME. THE STOCKPILE WLLL NEED TO GENERALLY SLOPES FROM THE SOUTHEAST TO THE NORTHWEST TOWARDS SEMINOLE TRAIL ROUTE 29, 3.02 CONSTRUCTION ENTRANCE 5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS 07HER THAN BE MAINTAINED AND STORED FOR LATER SPREADING. STOCKPILE LOCATIONS SHALL BE ON ADJACENT AREAS: A STABILIZED CONSTRUCTION EN7RANCE LOCATED AT POINTS OF VEHICULAR INGRESS AND INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF -SITE BORROW OR SITE AND SHALL BE STABILIZED WITH A TEMPORARY VEGETATIVE COVER. PERMANENT THIS SITE 1S BORDERED TO THE NORTH AND WEST BY THE FASHION SQUARE MALL ENTRANCE AND PARKING LOT. EGRESS ON A CONSTRUCTION SITE. TO REDUCE THE AMOUNT OF MUD TRANSPORTED ONTO WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION SEEDING WILL BE PERFORMED FOR ALL AREAS WHICH WILL NO LONGER BE EXCAVATED TO THE SOUTH IS THE BRANCH, BANKING & TRUST BUILDING AND TO THE EAST !S SEMINOLE TRAIL ROUTE 29PAVEDPUBLICROADSBYMOTORVEHICLESORRUNOFF. CONSTRUCTION ENTRANCES SHALL BE INSTALLED AS SHOWN ON THE PLANS TO REDUCE 7HE AMOUNT SEDIMENT TRANSPORTED CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AND WHERE CONSTRUCTION ACTNTIES HAVE CEASED. PERMANENT SEEDING SHALL ALSO NORTHBOUND LANES. SILT FENCE, DIVERSIONS, SEDIMENT TRAPS, INLET CONTROLS AND VARIOUS OTHER ESC ONTO PUBLIC ROADWAYS. 6. AUTHORITY. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR A YEAR OR MEASURES ARE PROPOSED TO LIMIT THE P07EN77AL FOR CONTAMINATION OF THESE ADJACENT PROPERTIES. 303 CONS77?UC77ON ROAD STABILIZATION. CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS MORE. SELECTION OF SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR APPLIED, OFFS17E LAND DISTURBANCE.• THE TEMPORARY STABILIZATION OF ACCESS ROADS, SUBDIVISION ROADS, PARKING AREAS, DETERMINED BY 7HE PLAN APPROVING AUTHORITY. TEMPORARY SEEDING WILL BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE LEFT OFFSITE LAND DISTURBANCE IS LIMITED TO PUBLIC RIGHT-OF-WAY. AND OTHER SITE VEHICLE TRANSPORTATION ROUTES WITH STONE IMMEDIATELY AFTER 7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES DORMANT FOR MORE THAN SEVEN DAYS. THESE AREAS SHALL BE SEEDED WITH FAST SOILS: GRADING. TO REDUCE EROSION OF TEMPORARY ROADBEDS BY CONSTRUCTION 7RAFFIC AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT GERMINATING VEGETAT70N IMMEDIATELY FOLLOWING GRADING OF THOSE AREAS. SELECTION SEE SOIL DESCRIPTIONS ON THIS PAGE AND THE PHASE l EROSION & SEDIMENT CONTROL PLAN FOR SOIL DURING WET WEATHER AND TO REDUCE EROSION AND SUBSEQUENT REGARDING OF UNTIL FINAL STABILIZATION IS ACHIEVED. OF SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR APPLIED. BOUNDARIES. PERMANENT ROADBEDS BETWEEN 7HE THE OF INITIAL GRADING AND FINAL STABILIZATION 8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED USE WHEREVER STONE -BASE ROADS OR PARKING AREAS ARE CON.S7RUCTED, WHETHER FILTERING DEVICE CRI77CAL AREAS.• PERMANENT OR TEMPORARY, FOR USE BY CONSTRUCTION TRAFFIC. 9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY 3.01 SAFETY FENCE- TO DISCOURAGE ACCESS To A PARTICULAR AREA. THE MANAGED STEEP SLOPES AT THE SOUTHERN PORTION OF THE SITE ARE CONSIDERED TO BE CRITICAL. THE 305 SILT FENCE., AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR 3.02 CONSTRUCTION ENTRANCE - TO REDUCE THE AMOUNT OF MUD 7RANSPORTED ONTO CONTRACTOR SHALL GIVE EXTRA ATTENTION AND CAUTION IN AND AROUND THESE AREAS TO ENSURE A TEMPORARY SEDIMENT BARRIER CONSIS77NG OF A SM7HET7C FILTER FABRIC STRETCHED CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF. CONSTRUCTION ACTIVITY DOES NOT DISTURB THESE EXIS77NG FEATURES TREE PROTECTION FENCING, SILT FENCING, ACROSS AND ATTACHED TO SUPPORTING POSTS AND EN7RENCHED, TO INTERCEPT AND 10. BE MADE IMMEDIATELY. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA. 3.03 CONSTRUCTION ROAD STABILIZATO- ON TO REDUCE THE EROSION OF TEMPORARY DIVERSIONS AND SEDIMENT TRAPPING DEVICES SHALL ALSO BE INSTALLED AS A FIRST STEP IN LAND DISTURBANCE DETAIN SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONS7RUCTON OPERATIONS IN ORDER TO PREVENT SEDIMENT FROM LEAVING THE SITE, AND TO DECREASE 11. ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL ROADBEDS BY CONSTRUCTION TRAFFIC AND TO REDUCE THE EROSION AND SUBSEQUENT TO ENSURE THESE CRITICAL AREAS ARE MAINTAINED. THE VELOCITY OF SHEET FLOWS AND LOW -TO -MODERATE LEVEL CHANNEL FLOWS. THE SILT SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND REGARDING OF PERMANENT ROADBEDS BETWEEN THE THE OF INITIAL GRADING AND FINAL SEQUENCE OF CONS77?UC770N: FENCE BARRIERS SHALL BE INSTALLED DOWN SLOPE OF AREAS WITH MINIMAL GRADES To OTHER DEBRIS. STABILIZATION. CONSTRUCTION ROAD STABILIZATION WILL BE APPLIED TO THE 1. CONTRACTOR SHALL NOTIFY THE ALBEMARLE COUNTY COMMUNITY DEVELOPMENT ENGINEERING DEPARTMENT TO FILTER SEDIMENT LADEN RUNOFF FROM SHEET FLOW AS INDICATED. 774EY SHALL BE 12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION CONTRACTOR PARKING &STAGING AREAS AS NEEDED. SCHEDULE A PRE -CONSTRUCTION MEETING. INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND MAINTAINED IN ACCORDANCE WITH THE PER ZONING ORDINANCE SECTION 5.1.28. 2. PRIOR TO DISTURBANCES, 7HE LIMITS OF DISTURBANCE SHALL BE FLAGGED AND THE TREE PROTECT70N VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK (VESCH). 13: ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 J..05 SILT FENCE- SILT FENCE IS PROPOSED, WHERE SHOWN ON THE PLANS. FENCING SHALL BE INSTALLED. 307 STORM DRAIN INLET PROTECTION' OF THE CODE OF ALBEMARLE. 3.07 STORM DRAIN INLET PROTECTION- INLET PROTECTION IS PROPOSED ON INLETS, J. NO EROSION CONTROL MEASURES MAY BE REMOVED DURING THE CONSTRUCTION PROCESS WITHOUT THE A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM DRAIN DROP 14. BORROW FILL OR WASTE AC770TY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT WHERE SHOWN ON THE PLANS APPROVAL FROM THE INSPECTOR ON THE PROJECT. INLET OR CURB INLET TO PREVENT SEDIMENT FROM ENTERING STORM DRAINAGE SYSTEMS 15. SHALL BE LIMITED TO THE HOURS OF 7. 00 AM TO 9: 00 PM. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAT 3.09 DIVERSION- PERIMETER DIVERSIONS ARE PROPOSED WHERE SHOWN ON THE PLANS 4. INSTALLATION OF THE PROPOSED CONSTRUCTION ENTRANCE SHALL OCCUR NEXT THE CONTRACTOR SHALL PRIOR TO PERMANENT STABILIZATION OF 774E DISTURBED AREA. INLET PR07EC77ON APPLIES MAINTAINS LATERAL SUPPORT, OR ORDER TO MINIMIZE ANY HAZARD TO PERSONS, TO DIRECT RUNOFF INTO A SEDIMENT 7RAPPING DEVICE. APPLY CONSTRUCTION ROAD STABILIZATION AS NEEDED. CONTRACTOR SHALL ENSURE THE CONSTRUCTIONWHERESTORMDRAININLETSARETOBEMADEOPERA777ONALBEFOREPERMANENT STABILIZA77ON OF 7HE CORRESPONDING DISTURBED DRAINAGE AREA. PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY 3.13 SEDIMENT TRAP- SEDIMENT TRAPS ARE PROPOSED WHERE SHOWN ON 774E PLANS. ENTRANCE DRAINS TO AN ADEQUATE E&S MEASURE. THE CONTRACTOR SHALL UTILIZE THE NEARBY SEDIMENT PUBLIC STREET BECAUSE OF SLIDES, SINKING, OR COLLAPSE. 3.18 OUTLET PROTECTION -OUTLET PROTECTION IS PROPOSED AT THE OUTLET OF PIPES. TRAP FOR VEHICULAR WASH OFF. CONSTRUCTION ENTRANCE TO BE INSTALLED WHERE CONSTRUCTION VEHICLE 309 TEMPORARY DIVERSION DIKE 16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR 3.19 RIPRAP- RIPRAP IS PROPOSED AROUND THE EXISTING Dl. ROUTES INTERSECT PAVED PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF A TEMPORARY RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A CONVERT TO PERMANENT STORMWATER MANAGEMENT FACILITIES WHERE APPLICABLE 3.32 PERMANENT SEEDING -PERMANENT SEEDING IS REQUIRED AND PROPOSED WITH THIS SEDIMENT BY (VEHICULAR) TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO ASLOPINGDISTURBEDAREA. TO DIVERT STORM RUNOFF FROM UPSLOPE DRAINAGE AREAS ALL EROSION CON7ROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF THE PLAN. AWAY FROM UNPROTECTED DISTURBED AREAS AND SLOPES TO A STABILIZED OUTLET TO SALE OF ANY LOT, UNIT, BUILDING OR OTHER PORTION OF THE PROPERTY. PUBLIC ROAD SURFACE, THE ROAD SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT DIVERT SEDIMENT -LADEN RUNOFF FROM A DISTURBED AREA TO A SEDIMENT-7RAPPING I7 TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING 3.38 TREE PRESERVATION AND PROTECTION- TREE PROTECTION IS PROPOSED WITH 7HIS SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPORTING TO A SEDIMENT FACILITY SUCH A SEDIMENT TRAP OR SEDIMENT BASIN. USE WHEREVER IS TO BE AT 75 LBS ACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY TO PLAN. SEE THE ESC PLAN FOR THE REQUIRED LOCATIONS CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THISEDSLOPESORUNOFFMUSTBETEMPORARILYDIVERTEDTOPROTECTDISTURBEDAREASANDSLOPESOR RETAIN SEDIMENT ON SITE DURING CONSTRUCTION. THESE STRUCTURES GENERALLY HAVE A CONSIST A 50/50 MIX OF ANNUAL RYGRASS AND CEREAL WINTER RYE, OR IN MARCH 3.39 DUST CONTROL -DUST CON7ROL IS REQUIRED AND PROPOSED WITH THIS PLAN. MANNER. LIFE EXPECTANCY OF 18 MON7HS OR LESS, WHICH CAN BE PROLONGED WITH PROPER AND APRIL TO CONSIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST OF 5. THE INITIAL ESC CONSTRUCTION MEASURES, AS SHOWN ON THE PHASE I EROSION & SEDIMENT CONTROL PLAN, MAINTENANCE. GERMAN MILLET. STRAW MULCH IS TO BE APPLIED AT 80LBS/1OOSF. AL7ERNATIVES MAINTENANCE: SHALL BE INSTALLED NEXT. THE CONTRACTOR SHALL BEGIN BY INSTALLING THE PERIMETER SILT FENCE AND 3.1 f TEMPORARY RIGHT--OF-WAY DIVERSION: ARE SUBJECT TO APPROVAL BY THE EROSION CONTROL INSPECTOR. IN GENERAL, DURING CONSTRUCTION 7HE RLD OR CONTRACTOR ON -SITE WILL CHECK ALL TREE PROTECTION. PERIMETER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST A RIDGE OF COMPACTED SOIL OR LOOSE ROCK OR GRAVEL CONSTRUCTED ACROSS 18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH. AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED AT 90LBS11000SF, EROSION AND SEDIMENT CONTROL MEASURES DAILY AND AFTER EACH SIGNIFICANT STEP WITH ANY LAND DISTURBANCE ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBED RIGHTS -OF -WAY AND SIMILAR SLOPING AREAS. TO SHORTEN 7HE FLOW LENG774 RAINFALL. MONITORING REPORTS WILL BE REQUIRED FROM THE RLD IF NEEDED. SPECIFIC DISTURBANCE TAKES PLACE. WITHIN A SLOPING RIGHT-OF-WAY, THEREBY REDUCING 774E EROSION POTENTIAL BY INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. FERTILIZER SHALL BE APPLIED AT ATTENTION WILL BE GIVEN TO THE FOLLOWING ITEMS. 6. ONCE THE PERIMETER EROSION CONTROL MEASURES HAVE BEEN INSTALLED, AND THE COUNTY INSPECTOR HASDIVERTINGSTORMRUNOFFTOASTABILIZEDOUTLET. GENERALLY, EARTHEN DIVERSIONS ARE 1000LBS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT MIX. PERMANENT SEEDING a. SEDIMENT BASINS AND/OR TRAPS W/LL BE CLEANED AND MAINTAINED IN ACCORDANCE APPLICABLE WHERE THERE WILL BE LITTLE OR NO CONSTRUCTION TRAFFIC WITHIN THE SHALL BE APPLIED AT 180LBS/ACRE AND CONSIST OF 95X KENTUCKY 31 OR TALL WITH THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK. APPROVED THESE MEASURES, THE CONTRACTOR SHALL BEGIN LIGHT CLEARING. THE CONTRACTOR SHALL BEGIN RIGHT-OF-WAY. GRAVEL STRUCTURES ARE MORE APPLICABLE TO ROADS AND OTHER FESCUE AND O-5% PERENNIAL RYGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS b.ALL GRAVEL OUTLETS WILL BE CHECKED REGULARLY FOR SEDIMENT BUILDUP THAT WILL BY CLEARING THE AREAS REQUIRED TO ACCESS THE LOCATION OF THE SEDIMENT TRAP. FOLLOWING THE RIGHTS -OF -WAY WHICH ACCOMMODATE VEHICULAR TRAFFIC. TO B l T 80 1005 . A RN S A SUBJECT 7 APPROVAL BY 7NETIPPLEDALBSFLIEATIVEREBECT0PPRL E PREVENT PROPER DRAINAGE. IF THE GRAVEL IS CLOGGED BY SEDIMENT THE GRAVEL INSTALLA170N OF THESE MEASURES THE CONTRACTOR SHALL INSTALL THE DIVERSIONS. ANY REMAINING 313 TEMPORARY SEDIMENT TRAP: EROSION CONTROL INSPECTOR. WILL BE REMOVED AND CLEANED OR IT WILL BE REPLACED. EROSION CONTROL ITEMS AS SHOWN ON THE PHASE l EROSION CONTROL PLAN SHALL ALSO BE CONSTRUCTED A TEMPORARY POND/NG AREA FORMED BY CONS7RUCTNG AN EAR7HEN EMBANKMENT WITH A 19. MAINTENANCE. ALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH c. ALL SILT FENCE BARRIERS WILL BE CHECKED REGULARLY FOR UNDERMINING OR AT THIS TIME STONE OUTLET TO DETAIN SEDIMENT -LADEN RUNOFF FROM SMALL DISTURBED AREAS LONG RAINFALL. ANY DAMAGE OR CLOGGING TO STRUCTURAL MEASURES IS TO BE REPAIRED DETERIORATION OF THE FABRIC AND REPAIRED AS REQUIRED. SEDIMENT SHALL BE 7 ONCE ALL THE PHASE I EROSION CONTROL ITEMS HAVE BEEN INSTALLED & ARE OPERATIONAL, DRAINAGE IS ENOUGH TO ALLOW THE MAJORITY OF THE SEDIMENT TO SETEE OUT. USE BELOW IMMEDIATELY. SILT TRAPS ARE TO BE CLEANED WHEN 50% OF THE WET STORAGE REMOVED WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHED HALF WAY TO THE TOP PROPERLY CONVEYED TO THESE MEASURES, AND THE ESC INSPECTOR HAS GRANTED APPROVAL, THE DISTURBED AREAS WHERE 7HE TOTAL CONTRIBUTING DRAINAGE AREA IS LESS THAN 3 ACRES, WHERE THE SEDIMENT TRAP WILL BE USED NO LONGER THAN 18 MON7HS, AND IT MAY BE 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 OF THE BARRIER. d.ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO SEE THAT A GOOD STAND 1S CONTRACTOR CAN BEGIN CLEARING THE REMAINDER OF THE SITE. TEMPORARY SEEDING, PERMANENT SEEDING CONSTRUCTED E17HER INDEPENDENTLY OR /N CONJUNCTION WITH A TEMPORARY DIVERSION DYKES WHICH ARE COLLECTING SEDIMENT TO HALF 7H£/R HEIGHT MUST BE CLEANED MAINTAINED. AREAS SHOULD BE FERTILIZED AND RESEEDED AS NEEDED. AND DUST CONTROL SHALL BE IMPLEMENTED AS REQUIRED. DIKE. AND REPAIRED IMMEDIATELY. IN CASE OF EMERGENCY, THE PRIMARY CONTACT FOR THE PROJECT WILL BE 774E RLD OR 8. AFTER CLEARING THE PROPOSED AREAS, THE CONTRACTOR CAN PROCEED TO PHASE 11 OF THE EROSION & 20. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE REMOVED CONTRACTOR ON -SITE IN ADDITION THE OWNER MAY BE CONTACTED. UPON COMPLETION SEDIMENT CONTROL PLAN. THE CONTRACTOR SHALL BEGIN ROUGH GRADING THE SITE TO THE CONTOURS318CURETPROTECTION STRUCTURALLY LINED APRONS OR OTHER ACCEPTABLE ENERGY DISSIPATING DEVICES PLACED WITHIN 30 DAYS OF FINAL S17E STABILIZATION, WHEN MEASURES ARE NO LONGER OF THE PROJECT 7HE OWNER WILL BE RESPONSIBLE FOR SITE MAINTENANCE. SHOWN ON THE PHASE ll EROSION &SEDIMENT CONTROL PLAN. MEASURES INTENDED TO TRAP SEDIMENT AT 174E R OF PIPES PAVED CHANNEL SECTIONS TO PREVENT SCOUR AT NEEDED, SUBJECT TO APPROVAL BY THE EROSION CONTROL INSPECTOR. SHALL BE CONSTRUCTED AS A FIRST STEP WITH ANY LAND DISTURBANCE ACTIVITY AND SHALL BE MADE OUTLETS, STORMWATEOUTLETS, TO PROTECT R CTTHEOUTLETSTRUCTURE, AND MINIMIZE 774E 21. THE E INSPECTOR HAS THE AUTHORITY TO ADD OR DELETE E&S CONTROLS FUNCTI0NAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. FOR DOWNSTREAM EROSION BY REDUCING THE VELOCITY AND ENERGY OF POTENTIFRY /N THE f7ELD AS SITE CONDITIONS CHANGE. /N ADD/TON, NO SEDIMENT NECESSARY 9. THE CONTRACTOR SHALL INSTALL ANY REMAINING EROSION CONTROL ITEMS AS SHOWN ON THE PHASE ll CONCEN7RATED STORMWATERFLOWS. APPLICABLE TO 7HE OUTLETS OF ALL PIPES AND BASIN OR TRAP CAN BE REMOVED WITHOUT WRITTEN AUTHORIZATION. ENGINEERED CHANNEL SECTIONS EROSION CONTROL PLAN. TEMPORARY SEEDING, PERMANENT SEEDING AND DUST CONTROL SHALL BE IMPLEMENTED AS REQUIRED. 31s RIPRAP A PERMANENT, EROSION -RESISTANT GROUND COVER OF LARGE, LOOSE, ANGULAR STONE W17H SOIL DESCRIPTION 10. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS FILTER FABRIC OR GRANULAR UNDERLINING TO PROTECT THE SOIL FROM THE EROSIVE AFTER FINAL GRADE IS REACHED ON ANY PORT70N OF THE SITE. TEMPORARY SOIL STABILIZA77ON SHALL BE FORCES OF CONCENTRATED RUNOFF, SLOW 7HE VELOCITY OF CONCENMA7ED RUNOFF WHILE 27B-£LIOAK LOAM-2 TO 7X SLOPES SOIL IS WELL DRAINED W77H A MEDIUM RUNOFF APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN ENHANCING THE POTENTIAL FOR INFIL7RA770N, AND TO STABILIZE SLOPES W9774 SEEPAGE CLASSIFICATION. SURFACE LAYER IS TYPICALLY LOAM AND ABOUT 0-8" THICK. THE DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS PERMANENT STABILIZA77ON SHALL BE APPLIED TO PROBLEMS, AND/ OR NON -COHESIVE SOILS. USE WHEREVER SOIL AND WATER INTERFACE DEPTH TO 171E WATER TABLE IS GENERALLY MORE THAN 80. AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. AND 7HESOILCONDITIONS, WATER TURBULENCE AND VELOCITY, EXPECTED VEGETATIVE 34C-GLENELG LOAM-7 TO 15X SLOPES SOIL IS WELL DRAINED WIN A MEDIUM RUNOFF 11. ONCE THE SITE IS ROUGH GRADED, THE CONTRACTOR SHALL BEGIN PHASE Ill OF THE EROSION & SEDIMENT COVER, ETC., ARE SUCH THAT THE SOIL MAY ERODE UNDER THE DESIGN FLOW CONDITIONS. CLASSIRCA770M SURFACE LAYER IS TYPICALLY LOAM AND ABOUT 0-8" THICK. THE DEPTH TO THE WATER TABLE IS GENERALLY MORE THAN 80". CONTROL PLAN. THE CONTRACTOR CAN BEGIN INSTALLATION OF THE UTILITIES, CURB AND GUTTER, AND ROADS. 3.31 TEMPORARY SEEDING., 774E ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY SEEDING 91 URBAN LAND-0 TO 25X SLOPES MEDIUM RUNOFF CLASSIFICATION. 10" DEPTH TO INLET PROTECTION SHALL ALSO INSTALLED AS THE STORM SEWER IS CONSTRUCTED. INLET PROTECTION SHALL W9774 APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS. TO REDUCE EROSION AND DENSIC MATERIAL. BE INSPECTED AFTER EACH RAINFALL EVENT AND REPAIRS SHALL BE MADE AS NEEDED. IF THE STONE FILTER SED/MENTATON BY STABILIZING DISTURBED AREAS THAT WILL NOT BE BROUGHT TO FINAL BECOMES CLOGGED WITH SEDIMENT SO THAT IT NO LONGER ADEQUATELY PERFORMS ITS FUNCTION, THE STONE GRADE FOR A PERIOD OF MORE THAN 30 DAYS TO REDUCE DAMAGE FROM SEDIMENT AND REFERENCEWEB SOIL SURVEY ONLINE DATABASE FOUND AT RUNOFF TO DOWNSTREAM OR OFF -SITE AREAS, AND TO PROVIDE PR07EC77ON TO BARE http://websoilsurvieynres.usda.govlappl'WebSoilSurvey.aspx SOILS EXPOSED DURINGCONSTRUCTIONUN7LPERMANENTVEGETATIONOROTHEREROSIONCONTROLMEASURESCAN BE ESTABLISHED. 332 PERMANENT STABILIZATION., EROSION CONTROL NOTES THE ESTABLISHMENT OF PERENNIAL VEGETATIVE COVER ON DISTURBED AREAS BY PLANTING UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION SEED. TO REDUCEEROSIONANDDECREASESEDIMENTYIELDFROMDISTURBEDAREAS. TO ES-1: AND SEDIMENT CONTROL PRACTICES WILL AT CONSTRUCTED AND MAINTAINED PERMANENTLY STABILIZE DISTURBEDAREASINAMANNERTHATISECONOMICAL, ADAPTABLE TO SITE CONDITIONS, AND ALLOWS SELEC7ON OF THE MOST APPROPRIA7E PLANT MA TERJALS ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA TO IMPROVE WILDLIFE HABITAT. TO ENHANCE NATURAL BEAUTY. UPON COMPLE7ON OF EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR CONSTRUCTION ACTIVITIES, ALL AREAS WILL RECEIVE A PERMANENT VEGETARVE COVER. 625-02-00 EROSION AND SEDIMENT CON7ROL REGULATIONS. ES-2. 7HE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO 338 7REE PRESERVATION AND PROTECTION: - THE PRE CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE PROTECTION OF DESIRABLE 7REES FROM MECHANICAL OR 07HER INJURY DURING LAND COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO DISTURBING AND CONSTRUCTION ACTIVITY. TO ENSURE 7HE SURVIVAL OF DESIRABLE TREES THE FINAL INSPECTION. WHERE THEY WILL BE EFFEC77VE FOR EROSION AND SEDIMENT CONTROL, WATERSHED ES-J. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR PROTECTION, LANDSCAPE BEAUTIFICATION, DUST AND POLLUTION CONTROL, NOISE REDUCTION, TO OR AS THE FIRST STEP IN CLEARING. MUST BE PULLED AWAY AND CLEANED AND/OR REPLACED. 12. ONCE PHASE III OF CONSTRUCT70N IS COMPLETE, THE SITE IS STABILIZED AND THE INSPECTOR HAS GIVEN APPROVAL, THE CONTRACTOR CAN THEN CONVERT THE SEDIMENT TRAP INTO THE PROPOSED SWM FACILITY. AT THIS TIME, THE CONTRACTOR CAN REMOVE THE REMAINDER OF THE EROSION & SEDIMENT CONTROL MEASURES. NO ITEM SHALL BE REMOVED, THROUGHOUT ALL PHASES OF CONSTRUCTION, UNLESS THE UPSTREAM AREAS ARE STABILIZED AND THE INSPECTOR GIVES PERMISSION. 13. THE CONTRACTOR SHALL MAINTAIN ALL EROSION CONTROL MEASURES AS SPECIFIED IN THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK, REMOVING ONLY WHEN APPROVED BY THE LOCAL PROGRAM ADMINISTRATOR IN ACCORDANCE WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. 14. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZAT70N OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED UNLESS 07HERWISE AUTHORIZED BY THE LOCAL PROGRAM ADMINISTRATOR. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOS177ON OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. SHADE AND OTHER ENVIRONMENTAL BENEFITS WHILE 7HE LAND IS BEING CONVERTED FROM ES-4: A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL FOREST TO URBAN - TYPE USES. APPLIES IN TREE -INHABITED AREAS SUBJECT TO LAND BE MAINTAINED ON THE SITE AT ALL TIMES. DISTURBING ACTIVITIES. ES- 5:PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS INCLUDING BUT NOT LIMITED TO, OFF -SITE 1992 3.39 DUST CONTROL: ( REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING, DEMOLITION AND BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A CONSTRUCTION AC77N77ES. TO PREVENT SURFACE AND AIR MOVEMENT OF DUST FROMSUPPLEMENTARY I N N T H R OR R W N EROSION CON7ROL PLANOTHEOWNSFORREVIEWANDEXPOSEDSOILSURFACES AND REDUCE 7HE PRESENCE OF AIRBORNE SUBSTANCES WHICH APPROVAL BY THE PLAN APPROVING AUTHORITY. MAY PRESENT HEALTH HAZARDS, TRAFFIC SAFETY PROBLEMS OR HARM ANIMAL OR PLANT ES-6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL LIFE DUST CONTROL MEASURES SHALL BE EMPLOYED TO PREVENT SURFACE AND AIR EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND MOVEMENT OF DUST DURING CONS7RUCTON. MEASURES EMPLOYED SHALL BE IN SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. ACCORDANCE W/7H THE VESCH. ES-7..ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DIS7URBING ACT7077ES AND DURING S17E DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. ES-8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED WATER FILTERING DEVICE. ES-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. GENERAL SLOPE (3: 1 OR LESS) KENTUCKY 31 FESCUE 128 LBS. TABLE 3.31- B RED TOP GRASS 2 LBS. TABLE 3.39-A ACCEPTABLE TEMPORARY SEEDING PLANT MATERIALS SEASONAL NURSE CROP 20 LBS. ADHESIVES USED FOR DUST CONTROL QUICK REFERENCE FOR A1,L REGIONS" SEASONAL NURSE CROP 150 LBS Water Application FEBRUARY 16 THROUGH APRIL ANNUAL RYE Dilution Type of Rate Planting Dates Species Rate lbs acre) MAY 1 THROUGH AUGUST 15 FOXTAIL MILLET Adhesive Adhesive: Water) Nozzle Gallons/Acre AUGUST 16 THROUGH OCTOBER ANNUAL RYE NOVEMBER THROUGH FEBRUARY 15 WINTER RYE Sept. 1- Feb. 15 50/50 Mix of Anionic Annual Ryegrass NOTES: Asphalt Emulsion 7:1 Coarse Spray 1,200 Lolium multi-florum) 1. LIME AND FERTILIZER NEEDS SHALL BE DETERMINED BY SOIL Latex Emulsion 125:1 Fine Spray 235 Cereal (Winter) Rye 50-100 TESTS AND APPLIED IN ACCORDANCE WITH VESCH STD. 3.32. Seeale cereale) 2. SEEDINGS TO BE MULCHED IMMEDIATELY UPON COMPLETION Resin in Water 4:1 Fine Spray 300 OF SEED APPLICATION, IN ACCORDANCE W/ VESCH STD 3.35. Acrylic Emulsion Feb. 16 -Apr. 30 Annual Ryegrass 60 - 100 PS PERMANENT SEEDING SCHEDULE Non -Traffic) 7:1 Coarse Spray 450 aah:ummulti-florlun) NOSCALE Acrylic Emulsion Traffic) 3.5: 1 Coarse Spray 350 May 1 -Aug 31 German Millet 50 STD. & SPEC. 3. 32 OF VIRGINIA EROSION & Setadaitalica) SEDIMENT CONTROL HANDBOOK, 3RD ED.) ource: Va. DSWC Paved construction entrance for erosion control plans VN CONSTRUCTION ACCESS 3" SM- 2A ASPHALT TOP COURSE 27L 2% 6' MIN. 21A AGGREGATE BASE PROFIL ACCESS -\0ASPIHALT PAVED y I ZR tax 12' MIN.- - I POSITIVE DRAINAGE MUST EXTEND FULL WIDTH A I TO SEDIMENT OF INGRESS AND EGRESS OPERATION /1 TRAPPING DEVICE PLM 12' MIN. 9. 1992 FILTER CLOTH) PAVEMENT- IIVL DRAINAGE SEDIMENT PIPING DEVICE A ammuuw wale tap of 1 inch tumt be niA. led with a uwwwwl t inch Wilcock Aiutoff vah-e . tlpphum a wash hose with a thvueta of 1 4 caches for adequate olvIallt pleIesive. Wash Wain inust be camel aw'a\' hwu the entlauce to at applo\'ed setlhtw_ ales to tauot•e sethluad Al _;cvluuetd Till be pre•aded how eutawg stores 14aw.< chtches of watacotrses PAVED WASH RACK FENCING AND I DRIP UNE SNOW FENCE J16 PO ORING Pal --A- CORRECT TRUNK ARMOR NG TRIANGULAR BOARD FENCE Source: Va. DSWC 3.05 1992 CONSTRUCTION OF A SILT FENCE WITH WIRE SUPPORT) UPSLOPE1. sEr POSTS ANDEXCAVATEACX47' TRENCH • 2. STAPLE WIRE FENCING TO THE POSTS. OF iaunl. 11N 1 I cFL W 3. ATTACH THE FILTER FABRIC TO THE WIRE FENCE • EXTEND IT INTO THE TRENCH. 4. SACKFILL AND COMPACT EXCAVATEDSO Y L, f" 4 I E• II, F i I 4 Nj itlltl' . Alltlr< FLOW EXTENSION . THETRENCH. II WIRE 4111M I Source: Adapted from Installation of Straw and Fabric Filter Barriers for Sediment Control, Sherwood and Wyant 3.38 Plate 3.38- 2 3.05 CONSTRUCTION OF A SILT FENCE WITHOUT WIRE SUPPORT) 1. SET THE STAKES. 2. EXCAVATE A 4"X 4" TRENCH UPSLOPE ALONG THE LINE OF STAKES. 6'MAX. / raow - 3. STAPLE FILTER MATERIAL TO STAKES AND EXTEND IT INTO THE TRENCH. 4. BACKFILL AND COMPACT THE EXCAVATED SOIL. SHEET FLOW INSTALLATION PERSPECTIVE VIEW) POINTS A SHOULD BE HIGHER THAN POINT B. DRAINAGEWAY INSTALLATION FRONT ELEVATION) Source: Adapted from Installation of Straw and Fabric Filter Plate 3.05- 1 Barriers for Sediment Control, Sherwood and Wyant Plate 3.05-2 SCOTTIR. CIILLINSt2!_ Lic. No. 035791,' n 7/17/20 i H Z w O zO d CDV1 O ZU W p ZZ3LU a CL 7: Q wo m Enm V' c Lij LLI wLU LUW o 1711 n co al r rn L9 J Z QQ m J F- ora_ in- LU N ^ z M V) QW o J W J ZwLU a n z w z Liu Q 0 J J Z ° oQ U O W U zLUZIx :: DLn C nF z C6 lttJ ' W O 24 IItJ ,w V) 00 LLI O N U w w a N JOB NO. 192036 SCALE 1"= 20' SHEET NO. 3 U.S. ROUTE 29 (NORTHBOUND) 3.2'x70' MIN. OF EXISTING ASPHALT PROPOSED TEMPORARY YARD PROPOSED ORANGE SAFETY FENCE TO ENCOMPASS / o SEMINOLE TRAIL CE DRAIN AND PIPE FROM OUTFALL SEDIMENT TRAP AND ITS OUTFALL AT ALL TIMES I ENTRANCE SHALL REMAIN AND PROPOSED 4.i' F - VARIABLE WIDTH PUBLIC R/W FUNCTION AS THE CONSTRUCTION WIDE STONE WEIR TO EXISTING STORM INLET. FOR SAFETY. INSTALL SIGNS AROUND TRAP THAT/ Z w - "' '- ENTRANCE FOR THE PHASE I & II ESC PLAN OUTFALL \ \ \ READ "DANGER, QUICK SAND, DO NOT ENTER" x W W ` ...W W - O SCOTT R. LINS V- €TY- ST - - - _ sr — n _ a _ O P i2 sr U Lic. No. 035791 g— s _ - pQ __ ST ST s"d— '". o . .. __ Sr — T — SL ST 6 SST \ Si On - Kl 9/10/20 10 sip ST— U') sF _ sr _ sT _ T ` _ r sr -- - _ / _ or \HE i'SS,I E yG G_ o S ' I ( o sr I ONAL aN N srO Sr O - O / - W . — W U IN ID Fo 0 PROPOSED LIMITS OF DISTURBANCE 1.14 ACRES o — — — — / \ / I- WD \ / LU 1 a A ( 0 TMP 61-129 ' o_ y I N/F J.C. PENNEY PROPERTIES, INC F. m z a 7DB1355PG725rDB4355 G-625 U U z U In w j + SILT / w g p FENCE TO - I\ O CL o CL w ENCOMPASS Co STOCKPILEE IP _ // w¢ Q DIVER I ED IN I U SEDIMEN I I RAP SIL I rtlVl.t LUINL-IutS VVI I N txu I NNO > r PERTY LINE - - - W Lu PRO 1-- 475 rr _ TO OUTFALL INTO L ' -' r LOCATION OF CAVALIERCOUNTRY3BANK 5P4SEDIMENT TRAP `\ - DUMPOSTER_(_s) PROPOSED WASH RACK DB DB 327 PG 228 (PLAT) TMP 61-134 _ DB 468 PG 456 (PLAT) I lI _ - - _ --- -4- 5 0 III l - - -- LOCA ON OF - - - / / / I — - -- _ PROPOSED 2 DEEP GRADED DEPRESSION CONTRACTOR PARKING _PORTA- POTTY STAGING AREA WITH A RUBBER MEMBRANE LINING TO ' - LOCATION OF • . - - - - - _ - _ _ - - - / / 1711 D C) PREVENTSOIL INFILTRATION, SHALL BE / - - _ - - - -- PROPOSED USED OR THE CONCRETE WASHOUT AREA. %/ - - // / I / RAIN GAUGEPHASE I DRAINAGE I -AI Sediment Trap Design AREA TO SEDIMENT drainage area (acres) (< 3) 0.69 1 1 WRIABE - -- TS - - - TRAP=O: E)9 ACRES - - C "SF trap volumes: cREsrorsroxewnR NEW oRauu rARLRiE• PROPOS D LIMITS OF DISTURBANCE elevation ft areas volume c volume(cy) GROUND --__ - - Lu 470.5 349 144 5.3 ti c -- , - --x • U ELEV. , ACRES DRY STORAGE ..+ YAR4Bl£ 471 481 351 13.0 472.5 626 1,178 43.6 Euj e Z) i — Z 473783 1, 530 56.7 WET STORAGE vox bl - - • / 1 - ¢ 473. 5 950 1,963 72.7 (E%GMED) TP f r dp~ / / / / 1 / -- - - - - M FLIER CLOTH ORIGINAL47411232, 480 91.9 1 o"E°L`c"o _ _ _ _ _ - - -- lll/ll i - - - --- /- - -- - - - - 474.5 1303 3,086 114.3 - - / / N CONTRACTOR SHALL INSTALL SILT FENCE & TREE O LU SEE PIAIE 3.13-1 COeRSE AGGREGATE" CU55 I RIPRAR 475 1489 3, 784 140.1 PROTECTION ALONG THE REAR OF THE PROPERTY, THE SILT 1 = m FENCE SHALL REMAIN IN PLACE UNTIL THE SEDIMENTTRAP - - ¢-¢ wet storage: - IS CONVERTED TO A PERMANENT SWM FACILITY & THE ESC w ¢ / / //' - - - - M Q wet storage required ( cy) (67*DA) 46.2 - - = - - -- - HAS GRANTED APPROVAL O ITS REMOVAL. > - - -- - bottom of stone weir (ft) 473.0 V: F 4g INSPECTOR a wet storage provided at this elevation (cy) 56.7 (V J I, slope ofwet storage sides 2:1 - - - - - - -- -- - - - : I _ 0O weir length ( ft) (6xDA) 4.1 - - - \ 01 N w c/ dry storage: bottom of trap elevation (ft) 470I- -- MANAGED - SV dry storage required (cy) ( 67*DA) 46.2 bottom trap dimensions: 34'x3' * STEEP SLOPES H crest of stone weir474.0 top of dam elevation (ft) 475 __ O dry storage provided at this elevation (cy) 91.9 top width of dam (ft) 4' U slope of dry storage sides 3:1 top trap dimensions 85x24' \ W DRAINAGE DIVIDE (TYP.) W w Lid W W W W W \`. W TMP 61-134A -- O W N/F ALBEMARLE BANK AND TRUST COMPANY Q O w 0.908 ACRES (39, 547 SF)0 E-+ DB 646 PG 508..._ - -`. J FLOW DIRECTION . } O ./ LU ARROW (TYP.) *. L.LMom/ ST ST W 5, — ST ST ST TMP 61 129 0 o s sr sr s — sT 1 v ° v° o _ o' ° o / \ \ \ N/F J.C. PENNEY PROPERTIES, INC •. I _ -- -- -- O DB 1908 PG 726 '- sp' DB 4355 PG625 .\ II - v U) GRAPHIC SCALE 473 V A A, 20 0 10 20 4 i% W W 475— \ G 475— _ A\ l v ( IN FEET) / i/ / 1 inch 20 ft. W W Q w / -- 475 — — — — — // // // // // / V C/. P- 4 a 4 kLU Z w W I - - - - - _ ST ST ST — ST ST ST ST ST S'I' - - - _ - VI - 3 ST — Si ST J x- -- -i- ax- x- - - - -- LLJ 473 vwi- L N DH O - - _ - -- cn - 0N o oN an_ -- - LLI U F p wi a _ _ - -- ss— _ _-- -- JOB NO. r a 192036 GRAPHIC SCALE \ \ SCALE 20 10 0 5 10ASSHOWNsC - / l- s SHEET NO. 1 ( IN FEET) 4z/ 1 inch = 10 ft. ry / J - / ss — ss br - - 4 U.S. ROUTE 29 (NORTHBOUND) 12'x70' MIN. OF THE EXISTING ASPHALT PROPOSED TEMPORARY YARD PROPOSED ORANGE SAFETY FENCE TO ENCOMPASS THJ / o SEMINOLE TRAIL CE SEDIMENT TRAP AND ITS % = J I dF I O ENTRANCE SHALL REMAIN AND PROPOSED 4 i DRAIN AND PIPE FROM OUTFACE VARIABLE WIDTH PUBLIC R/W FUNCTION AS THE CONSTRUCTION WIDE STONE WEIR \ TO EXISTING STORM INLET F ANG A AROUND TRAPENTER" liORSAFETYINSTALLSIGNSAUNDTHATi / O LLI_ ENTRANCE FOR THE PHASE I & II ESC PLAN OUTFACE READ "D ER, QUICK SAND, DO NOT G a 1 W W w W Z W l \ / - v SCOTT R. LINS lJ In U"T-- — sr s — - - - e o O P Rye o Lic. No. 035791,h A —sr— ST sr _ / IT sT ST / .. < . _ - - 4 5 IT . ST F ST \ - - _ - JY 116 9/18/20 Sy' W - I,. - 10 IT -- sr . - < _ . IT _ .' s ov. ASS lyC'1 lL} - - - - - - - -- _ - sr — sr — sr — sr _ Sr — IT — — s---r st sr s - - ° o" sOHE ZONAL F' a ON p0N H / ST n _ E r I uj I WD / - z g TMP 61 129 z o0I _ o m 4gQ / i N/F J.C. PENNEY PROPERTIES, INC a DB 1908 PG 726 ' lA O DB 4355 PG 625. - -- -- L w Lu PHASE II DRAINAGE * / / Z gi ' z CL a PROPOSED LIMITS OF DISTURBANCE \ AREATOSEDIMENT SILT FENCE TO _ O > JA ° ' %i ENCOMPASS > ¢ w i TRAP=O.6g ACRES STOCKPILE f _ ZulWCAVES ENTRANCE TO BLOCATION E \ \ _ __ ° ° J PROPOSED LOCATION INSTALLED OF FUEL STORAGE TO ENSURE RUN-OFF ISLn TS /' PROPOSED LIMITS OF DISTURBANCE & DIVERTED INTO SEDIMENT TRAP - - - - SILT FENCE COINCIDES WITH EXISTING / W w PROPERTYL _ 7LINE PROPOSED WASH RACK I _ ' - TMP61-134 4- -_, _- - - -- --- ROPOSEDCAVALIER 61-1Y BANK TO OUTFALL INTO I - Y - LOCATION OF DB 527 PG 43 SEDIMENTTRAP I DUMPSTER(s) DB 327 PG 228 (PLAT) I _ — — • V /------- - ---\ / / --- J - — i / / . DB 468 PG 456 (PLAT) \ PROPOSED / " O LOCATION OF CONTRACTOR PARKING - - A - POTTY PROPOSED 2' DEEP GRADED DEPRESSION WITH A RUBBER MEMBRANE LINING TO % '- - - STAGING RREA / _ o - _ - / j / / / \ No PREVENT SOIL INFILTRATION, SHALL BE - - _ _ / .•• / cO USED OR THE CONCRETE WASHOUT AREA. / - - - PROIOS D / LOCATION OF ---- - vAIN GAUGE - - PROPOS DLIMITSOFDISTURBANCE a --------- - - - - - - - - - - i - [ F} i. iyACRES l-------------------- - / // Lu\\ a// x --- -- I -- TPa / /- - J 496— -I ao ---- m n.. / / / / / / cry CONTRACTOR SHALL INSTALL SILT FENCE & TREE p w / / / N I PROTECTION ALONG THE REAR OF THE PROPERTY. THE SILT / = m Q FENCESHALLREMAININPLACEUNTILTHESEDIMENTTRAP _ Q - i / // // // / M 1S CONVERTED TO A PERMANENT SWM FACILITY & THE ESC a / / / - _ - d , ^ a APPROVAL- Vl HASGRANTEDOITS — - - Lu MANAGED wl N STEEP SLOPES : Z DRAINAGE DIVIDE (TYP.) d / o , w W J / / e TMP 61-134A N/ F ALBEMARLE BANK AND 0. 908 ACRES (39,547DST SF)COMPANY _ 0 I l I \ \ \ I. . DB 646 PG 508& W FLOW DIRECTION Lu G_ ARROW ( TYP.)06 TMP 61-129 1- —_\ I \ \ N/F J.C. PENNEY PROPERTIES, INC DB 1908 PG 726 DB 4355 PG 625 I _ _ / , cr- 01 0 I U- J W I m W LU w - - -__Lu 2 JLu Sr si sr — sr sr sr sr ITITsrsrsrsrITsrr — — " `T IT sr — mil; nI \ — x—x—x_ x—N_ x x—x x—x_x x x x x—x—x—x—x-3 x—x = x x—" -- --- -- —. x— x—x x—x =x x_x_.,— - Q ~-- U V/ Oloe ul EROSION & SEDIMENT CONTROL LEGEND F VIRG/NIA EROSION 8 SEDIMENT CONTROL HANDBOOK SPECIFICATION NUMBER CE CONSTRUCTION 3.02 SF ENTRANCE SILT FENCE 3.05 IxI CULVERT INLET 3.08 f Ul/aPROTECTION DD --— TEMPORARY 3.09 RW DIVERSION DIKE TEMPORARYRIGHT- 3.11 8O OF - WAY DIVERSION TEMPORARY 3.13 SEDIMENT TRAP RR RIPRAP 3.19 TS TS TEMPORARYSEEDING 3.31 PS PS PERMANENT SEEDING 3.32 Tp TREE PROTECTION 3.38 OC OC DUST CONTROL 3.39 NOTE: ALL DISTURBED AREAS NOT PAVED MUST HAVE A PERMANENT VEGETATIVE COVER AFTER FINAL GRADING IS COMPLETED. S_ -- --— - ---- nor+ U CH_ — OH LLI on --' O" — -j w 5 "" — s a DI ST: — JOB NO. 192036 GRAPHIC SCA E SCALE s IN FEET \ 4 I I ,,. - ° ft., s _ SHEET NO. V , o - 1 inch = 20 Is 5 I NOTE: CONTRACTOR SHALL ENSURE AN / / m I LTH 0 ADEQUATE GRAVEL OR PAVED CONSTRUCTION ENTRANCE IN ACCORDANCE WITH MINIMUM VESCH STANDARDS. CONSTRUCTION ENTRANCE / / SCOTT R. LINStZSHALLBEAMINIMUMOF '2'x7o' AND SHALL p — REMAINUNTILAPPROVALTOREMOVEDITHAS / \ I U Lic. No. 035791,E U.S. ROUTE 29 (NORTHBOUND) O BEEN GRANTED BY VDOT & THE ESC INSPECTOR \ \ / C ° 9/18/20SEMINOLETRAILCE O VARIABLE WIDTH PUBLIC R/W / / n / / / SS10 L E ll Z W W W W Win L G Iv Ur- — ST - Sr _ ST _ - - --- -- - - - I P x - r _. _t - _ -. 5T — sr s sr •> ' , .. ® .. r -- -- - - - — s,-_ > - -- ST r sr - _ l oN i R) Q T ST - - ST- - 0G \ ( W a — — 1 -__-_,-. ,,sT—sT sT sT--_ 3?—- _ r sT--'-_— oH. IT _ i ST o sT _ sr _ T _ . - - s o i tJNE r IT ST I I I D IT FFM a s DH o r MGM WM Mn "M M M M M I Z vv Lu f - I x U z o LuW3 o a c DETENTION BASIN 'B' I - -4 j O O CL aj TA PROP-O-&E"NDERGROlfND - - - I i = TMP 61-129 > aI / DETENTION SYSTEM 'A' N/F J.C. PENNEY PROPERTIES, INC w - DB 1908 PG 726 /' c. DB 4355 PG 625 / PHASE III DRAINAGE AREA TO SEDIMENT (\ WLu TRAP=o.69 ACRES PROPOSED 5' WIDE CURB CUTS WITH PEA GRAVEL & FILTER FABRIC UNDERLAYMENT TO DIRECT RUNOFF FROM PARKING LOT t / - FIRO OSED LOCATION- INTO DRY DETENTION BASIN'B' V O ST _ _ 478.BW PROPOSED LIMITS OF ISTURBANCE &' 478.0 BW _ SILT FENCE COINCIDES WITH EXISTING mU PROPERTY LINE PROPOSED 3.5' WIDE CURBj _ — CUT WITH PEA GRAVEL & TMP 61-134 FILTER FABRIC UNDERLAYMENT `___ r / !8 / / RO'OSED / Y - LOCATION O o 0CAVALIERCOUNTRYBANKTODIRECTRUNOFFFROM / DUMPSTEr/ `,, — — / / - cv cv DB 527 PG 43 PARKING LOT INTO DRY I _ . _;__: DB 327 PG 228 (PLAT) DETENTION BASIN 'B' - - - 478:0 7W DB 4-68 PG 456 (PLAT) _ ----- 477. BW - PROPOSED / , O 4@3.o LOCATION OF / El', 478:0 W ORTA-P TTY 1— G C / PROPOSED 2' DEEP GRADED DEPRESSION \ CONTRACTOR PARKI WITH A RUBBER MEMBRANE LINING TO1 &STAGIN AREA PREVENT SOIL INFILTRATION, SHALL BE — / USED OR THE CONCRETE WASHOUT AREA.; PROPOS — — — — A — TIONGOF / / < / — — — — — — Lu y! / SF --/ / / / / - Q h — m JPROPOSEDLIMITSOFDISTURBANCE -— --- ------- --- --------- — 4 - - -- - i / - . / i.i ACRES m W 0 G m / / / / V TP ¢ Z)Cy CONTRACTOR SHALL INSTALL SILT FENCE & TREE z w / PROTECTION ALONG THE REAR OF THE PROPERTY. THE SILT = m / ./ w FENCE SHALL REMAIN IN PLACE UNTIL THE SEDIMENTTRAP -- - a a J 95 a / z INSPECTOR HAS GRANTED APPROVAL OF ITS REMOVAL. IS CONVERTED TO A PERMANENT SWM FACILITY &THE ESC \ U w MANAGED W STEEP SLOPES J W DRAINAGE DIVIDE (TYP.) r, O z W W TMP 6 - - 1 134A Z Z N/F ALBEMARLE BANK AND TRUST COMPANY I O U O0.908 ACRES (39,547 SF) H DB 646 PG 508 _ FLOW DIRECTIONV A ' 1 V) ARROW (TYP.) W O w LLJ v TMP 61-129 A vN/F DB 1908 PG 726 J.C. DB 4355 PG0625TE5, INC - - W W n ------ --- / //// i / / W \ / _ i / W r Lu J Lu IT ST Si Si - _ i ST ST ST ST T St ST ST S4 ST Si — x—xx x—x—x—x—x>x, - -- — x—x—x—x—x <x_ x—x x x .. x—x x—.:x—z- x—x—x—x t Y = S W LIJ N --- ------ --- ------ H--oe- - ---- --- `\ w - DH —' OH u i r x // ' C„- cH- H(' _ - -- x _ Is,, Ci W 1 S W fH - O OHOHJOB NO. 192036 GRAPHIC SALE ' 4 r S 20 0 ' -10.- 20 40 / / / / / I I - SCALE tee" I \ 1.''t " - \=o + ( IN FEET ) _ / / / / / / I ' SHEET NO. 1 inch = 20 ft. / / 6 ss NOTE: THE FUELING TANK SHALL BE COMPLETELY SURROUNDED BY A 2' DEEP, 2' WIDE EARTHEN BERM WITH A HEAVY MIL POLYETHYLENE LINING. THE PROPOSED BERM SHALL CONTAIN FUEL SHOULD IT BE SPILLED, SPILLED FUEL SHALL NOT BE RELEASED OUTSIDE THE LIMITS OF THE CONTAINED FUEL STORAGE AREA. CONTRACTOR SHALL ENSURE THE BERM VOLUME IS io% LARGER THAN THE MAXIMUM VOLUME OF STORED FUEL. CONTRACTOR MAY ALSO ELECT TO PLACE THE STORED FUEL IN AN ACCESSIBLE DUMPSTER. PROPOSED LIMITS OF DISTURBANCE i. i4 ACRES L— 1 / / I — / a:+l.aria.aula aura:uPlv_va:aura r_aaulau•_un GRAPHIC SCALE Pre -Development Impervious Area Summary 30 o 15 30 so Izo Subarea A Parking Areas 125 sf 0 IN FEET 1 inch = 30 ft. U.S/ ROUTE 29(NORTHBOUND) SEMINOLE TRAIL \ VARIABLE WIDTH PUBLIC R/W ) li I I I W W R Q i El aN 0 Sr EJ w - yip r I, a ( DEFINING PRE-DEV.SUBAREAS A & B) IS o LOCATED. AT THE POST-DEVELOPMENT'e'I O CURB CUT (DEFINING POST-DEV. kk - i- SUBAREAS A & B) , \ 11:so I . PHASE I(PROPOSED WITH THIS PLAN) TO RECEIVE SWM TREATMENT VIA 0 7 •. \ UNDERGROUND DETENTION SYSTEM 'A' DETENTION BASIN'S' A SMALL PORTION OF THE EXISTING, OFFSITE \ \ `:_ • / - - - / IMPERVIOUS 9REA5 ASS CIATED WITH THE \ ! - - / / /. - ENTRANCE ARE RELEASE ONTO RTE. 29 IN A .,.\' - / - _ _ - / _ SHEET FLOW MANNER. THI OFFSITE DRAINAGE SEE THIS SHEET, BELOW FOR - _ _" WILL,CONTINUET IN THIS MANNER IN _ THE FULL DEPICTION OF THE - THE PO ESC LIMITS OF DISTURBANC- DEVELOPM NIT SCENARIO. \ E 1 1 SUBAREAS A & B CN=57 T Tc=0.16 hrs. _ _ - - - / \ \ PROPOS D BOUNDARY FOR THE ESC LIMITS - - - -- - --- OF DIS RBANCE (1,14 ac.) DEFINES THE ' ' - _ / / ' PROP SED BOUNDARY FOR THE VRRM - - I-_. _ _ _ - r WATE QUALITY REQUIREMENTS, TYP. ' I - - - - - . - - - - - / / /. 4-90 It COO 100' OF OLF w/ 0'' A ELEV.-16' & I / 150' OF SHALLOW ---4 a 4 / CONS. FLOW W/ / - _ - - o ELEV.=1s' 495 - DEVELOPED ° General Construction notes for Stormwater Management Plans \ \ . UNPORTION OF 1. All dams and constructed fill to be within 95% of maximum dry \ . THE SITE 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. \ ". I' 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 *AIA I "---- -- / to permanent stormwater management facilities; conversion is not to take lace until the site is stabilized, and permission has beenPP \ L I obtained from the County erosion control inspector. WATERSHED SUMMARY FOR SUBAREAS A & B Area, 1-year Flow, 2-year Flow, 10-year Flow, CN ac. cfs cis cfs / / DAA& B (Pre-Dev.) 57 0.78 0.13 0.34 1.33 / CN Area, 1-year Flow, 2-year Flow, 10-year Flow,- ac. cfs cfs cfs DA A (Post-Dev.) 66 0.54 0.04 0.10 1.26 / DA B (Post-Dev.) 76 0.24 j Total 69 0.78 NOTE: DA A is routed initially through UGD System'A', and then routed through Detention Basin'B' / COUNTY OF ALBEMARLE Department of Community Development viRaryN Construction Record Drawings (As -built) for VSMP Thefollowing is a list of information required on construction record drawings foreqg stormwater facilities (reference Water Protection Ordinance 17422). It is preferable that the construction record drawing be prepared by someone other than the designer. Please do not provide design drawings as construction record drawings. A. A signed and dated professional seal of the preparing engineer or surveyor. B. The name and address of the firm and individual preparing the drawings on the title sheet. C. The constricted location of all items associated with each facility, and the inspection records to verify proper dimensions, materials and installation. The items include, but are not limited to the following: 1. Inspection Records and photographs for pipe trenches and bedding, including underdrains. 2. Video Pipe Inspection for any pipes which are not accessible or viewable. 3. Updated Location with geo-coordinates of all facilities. 4. Verified Drainage Area maps for the drainage area treated, and for drainage to the facilities. 5. Current physical and topographic survey for all earthen structures. Ponds should include a survey of the pond bottom. Surveys should verify pond volumes are per design. Corrections may be required for alterations from the design. 6. Plants, location and type. 7. Plans and profiles for all culverts, Pipes, Risers, weirs and Drainage Structures - Display the installed of drainage structures, culvert/ i size weirs materials inlets or end treatment stypeP1?e O, inlet and outlet protection, alignment and invert elevations compared to design. 8. Computations: For significant deviations from design, provide sealed computations verifying that the as -built condition is equivalent or better than design. 9. Ditch Lines - Display the constructed location of all ditch lines and channels, including typical sections and linings. 10. Easements - Show all platted easements with dead book references labeled. Facilities and drainage must be within platted easements. Provide copies of recorded documents. 11. Guardrail, fences or other safety provisions - Display the constructed location of all safety provisions; fences, guardrail, including the type, length and applied end treatments, compared to design. 12. Materiel layers - bofilter media, stone layers, sand layers, keyways and cores must be verified as to material types and depths. Include inspection reports, boring or test pit reports and materials certifications. Biofilter media must be an approved state mix. 13. Access roads - show location of access roads, surface treatment, drainage, etc, as applicable. 14. Compaction reports are required to verify fill compaction in dams. 15. Manufacturers certifications for proprietary BMP's certifying proper installation and functioning. GENERAL SWM FACILITY NOTES: 1. CONTRACTOR SHALL CALL THE COUNTY INSPECTOR & ENGINEERING DEPARTMENT 24-HOURS BEFORE ANY ANTICIPATED CONSTRUCTION ACTIVITIES FOR THE BMPs. THIS IS INCLUSIVE OF WHEN THE UNDERGROUND DETENTION SYSTEM SUBGRADE IS READY FOR PIPE CONSTRUCTION, BUT BEFORE STONE BEDDING IS INSTALLED. 2. PROPOSED OUTLET PROTECTION BELOW THE UNDERGROUND DETENTION SYSTEM W OUTFALL TO CONSISTOF A so' WIDE, 4 LONG, is" DEEP VDOT CL. Al RIPRAP LINED APRON WITH FILTER FABRIC UNDERLAYMENT. APRON TO BE LOCATED BETWEEN THE PROPOSED ENDWALL AND THE BASIN FLOOR, AS SHOWN. OUTLET PROTECTION SHALL THEN TRANSITION TO A FLAT/ o% GRADE AT THE BASE OF THE EMBANKMENT& SHALL EXTEND TO THE DETENTION BASIN'B' RISER STRUCTURE TO REDUCE THE RISK OF SCOUR & ORIFICE CLOGGING. FILTER FABRIC UNDERLAYMENT SHALL BE KEYED INTO THE EXISTING GROUND A MINIMUM OF 9" AT THE ENDS & ALONG THE PERIMETER. EDGES OF FILTER FABRIC SHALL OVERLAP A MINIMUM OF 12". 3. THE DETENTION BASIN B EMBANKMENT SHALL BE CONSTRUCTED IN ACCORDANCE WITH THE DETAILS & DESIGNS SHOWN ON THIS PLAN. 4.. LOW -FLOW ORIFICE DIAMETERS LESS THAN 3" ARE REQUIRED TO MEET MINIMUM ENERGY BALANCE CALCULATIONS. TO REDUCE THE RISK OF CLOGGING, TRASHRACKS ARE PROPOSED ON ALL ORIFICES AND THE DETENTION BASIN 'B' RISER. ADDITIONALLY, THE RIPRAP OUTLET PROTECTION BELOW UNDERGROUND DETENTION SYSTEM 'A' WAS EXTENDED (AS DESCRIBED ABOVE IN #2) AT A o%SLOPE TO REDUCETHE RISK OF CLOGGING DETENTION BASIN B's LOW -FLOW ORIFICE. ALSO, PRIVATE DROP INLET STR. 41S PROPOSED TO HAVE A REBAR GRATE TRASH RACK ACROSS ITS THROAT's OPENING TO REDUCE THE RISK OF CLOGGING THE LOW -FLOW ORIFICE IN UNDERGROUND DETENTION SYSTEM A. STORMWATER MANAGEMENT NARRATIVE: OVERVIEW THIS PROJECT PROVIDES STORMWATER MANAGEMENT (SWM) PRACTICES TO MITIGATE THE IMPACTS FROM THE PROPOSED IMPROVEMENTS. THIS STORMWATER MANAGEMENT PLAN COMPLIES WITH PART IIB SWM REQUIREMENTS. WATER QUALITY SUMMARY THE STORMWATER QUALITY REQUIREMENTS FOR THIS DEVELOPMENT ARE MET THROUGH THE BEST MANAGEMENT PRACTICE OF PURCHASING NUTRIENT CREDITS. A MINIMUM PHOSPHOROUS REMOVAL RATE OF 1.03 Ibs/yr IS REQUIRED. THE DEVELOPER WILL PURCHASE NUTRIENT CREDITS PRIOR TO THE ISSUANCE OF A LAND DISTURBANCE PERMIT. PLEASE SEE THE ATTACHED CALCULATIONS PACKET AND THIS SHEET FOR ADDITIONAL DETAILS. WATER QUANTITY SUMMARY THE PROPOSED DEVELOPMENT HAS ONE CONCENTRATED OUTFALL. THIS QUTFALL IS DIRECTED INTO A MANMADE STORM SEWER INLET LOCATED ON SEMINOLE TRAIL. ITS DRAINAGE AREA (SUBAREAS A & B) MEETS MINIMUM CHANNEL AND FLOOD PROTECTION REQUIREMENTS SET FORTH IN 9 VAC 25-870-66. SUBAREA A RECEIVES ATTENUATION VIA UNDERGROUND DETENTION SYSTEM 'A' INITIALLY, AND IS THEN DIRECTED INTO DETENTION BASIN 'B'. SUBAREA B's INFLOWS AND SUBAREA A's ROUTED OUTFLOWS WERE SYNCHRONIZED. THE SYNCHRONIZED STORM EVENTS WERE THEN ROUTED THROUGH DETENTION BASIN 'B'. THE RESULTANT DETENTION BASIN 'B' ROUTED OUTFLOWS ARE COMPLIANT WITH MINIMUM COUNTY & STATE REQUIREMENTS. IN SUMMARY, CHANNEL PROTECTION FOR SUBAREAS A & B IS MET THROUGH 9VAC25-870-66 SECTION B.3.a (ENERGY BALANCE) AND FLOOD PROTECTION IS MET THROUGH 9VAC25-870-66 SECTION C.2.b. (10yr. POST FLOW < SO yr. PRE FLOW), COMPLIANCE WITH THESE SECTIONS IS ACHIEVED PRIMARILY THROUGH THE PROPOSED UNDERGROUND DETENTION SYSTEM 'A', THE PROPOSED DETENTION BASIN 'B' AND THE REDUCTION OF RUNOFF EXITING THE PROPERTY UNDETAINED. PLEASE SEE THE ATTACHED CALCULATIONS PACKET AND THIS SHEET FOR ADDITIONAL DETAILS. U51-ULVtLUNIvltIV 1 J 1 UKM WA I tK IvIAINAbt:lvlIzN I PLAIN, SCALE 1"=30' GRAPHIC SCALE 30 0 15 30 60 IN FEET ) 1 inch = 30 ft. 1 T_ U.S," ROUTE 29(NORTHBOUND) SEMINOLE TRAIL VARIABLE WIDTH PUBLIC R/W v /0 A W W W Post -Development Impervious Area Summary Subarea A Building 2,900 sf Parking Areas 1,100 sf Sidewalks & Concrete 1,000 sf 5,000 sf Subarea B Parking Areas 3,825 sf Sidewalks & Concrete 475 sf 4,300 sf I J or 5 I 0sr - sr - sr LLI 3 - J w2co LU POT-DEV. SUBAREA A ROUTED TO UGD SYSTEM A. THEN DETENTION BASIN B) - - i0.54 ac., CN=66, Tc=0.15 hrs. I I\ / - -- A SMALL PORTI HEET N OF THE OFFSITE 480 ENTRANCE CONTIES TO BE RELEASED \ / / /I / ONTORTE. 29 IN A FLOW MANNER, AS SHOWN. A PROPOSED THE BULK s RUNOFF r = -- -_-- - - -- 4a- POST-DEV. SUBAREA B ROUTED TO DETENTION BASIN B) 0.24 ac., CN=76, Tc=0.10 hrs. PROPOS D BOUNDARY FOR THE ESC LIMITS OF DI RBANCE (1.14 ac.) DEFINES THE PROP SED BOUNDARY FOR THE VRRM WATE QUALITY REQUIREMENTS, TYP. 4:: mom - 495 20' OFFSHALLOW CONC. FL& w/ A. ELEV.=7' & 180' OF CHANNEL FLOW IN PIPE DITCH _& I UNDEVELOPED--/"" PORTION OF THE SITE gyp© CHANNEL & FLOOD PROTECTION SUMMARY Pre- Dev. Post-Dev. Method of 9VAC25-870-66 Method of 9VAC25-870-66 Method of 9VAC25-870-66 Method of 9VAC25-870-66 Subarea Subarea Channel Protection Compliance Limits of Analysis for Channel Protection Flood Protection Compliance Limits of Analysis for Flood Protection A & B A & B ISection B.3.a (Energy Balance) I N/A (Energy Balance Satisified) ISection C.2.b (10-yr. Post Flow < Pre Flow) N/A (10-yr. Post Flow < Pre Flow Satisified) US I-ULVLLUPlVILIV 151 UKlvlVVA I tK MAINAGLIVILIN I PLAIN, SHUWING WA I tK UUAL11 Y L1MI I b, SCALE 1"=30' Impervious Areas within Limits of Disturbance Building 2,900 sf Parking Areas 18,525 sf D i _ - I ST sT-_ sr Sr ST RT Sidewalks & Concrete 3,550sf sT-- -:---- - x 6 24,975sf PROPOSED_ SANITARY c SEWER EXTENSION i TO THE DEVELOPMENT N Fr DISTURBED AREAS ASSOCIATED WITH OFFSITE c C' SANITARY SEWER EXTENSION TO BE RETURNED- i - TO THEIR PRE -DEVELOPMENT CONDITIONS, AS SHOWN. ADDITIONAL CONCENTRATED OUTFALLS p KSHALLNOTBECREATEDINTHESELOCATIONS. - - - LLY W co JPROPOSED BOUNDARY FOR THE ESC LIMITS = Q OF DISTURBANCE (1.14 ac.) DEFINES THE U LU T PROPOSEDBOUNDARYFORTHEVRRM ' / ~ U WATER QUALITY REQUIREMENTS, TYP. / U) s SCOTT/ R. CIILLINSt2!_ Lic. No. 035791,'n 9/ 18/20 i H- Zw0U z Oan y FimVI d O Z U LU o Z Z 3LU a Oa W ON UJ J tiall Q D! H z LIJ fa LUwW LU n W n Ch Z Q m J N M V W N > O w W J lZ Z V 1 1 LU Lu W LU O zJ ED xW U 1 Q W o lil lil J W w w O U) O N U W w a N JOB NO. 192036 SCALE 1 11=30' SHEET NO. 7 SECTIONAA; TITICAL GRA'1PMCAL DETARS HOrtlooawow nil i I y/ /' N4" RYR Cut off trench-4' baler suitable material SO or rock L-----------J TYPICAL HOMOGENEOUS EMBANKMENT Perforated a FOUNDATION DRAIN 020% Transition fill rRock or gravel I- Blonket drain BLANKET DRAIN don Send, 7p•tl or and dro, ou" Rock or grovel Rock 6a E drain P D IF tTrmrsiiion Rlter Transition filter CHIMNEY DRAIN TOE DRAIN Figure A-1a. Homogeneous Embankments Tf/ Seepage Controls EMBANKMENT NOTES: AFTER AN INVESTIGATION OF THE SITE's SOILS, SITE VISITS, AN ANALYSIS OFTHE SURVEYED TOPOGRAPHY AND AN EXAMINATION OF VA DEQ APPENDIX A: EARTHEN EMBANKMENT, THE APPLICANT HAS PROVIDED A COMPREHENSIVE EMBANKMENT DESIGN THAT DOES NOT NEED A GEOTECHNICAL STUDY AT THIS TIME. SUCH IS THE CASE DUE TO THE PRECAUTIONARY EMBANKMENT DESIGNS PROPOSED. A SUMMARY OF THE EMBANKMENT DESIGN REQUIREMENTS ARE LISTED BELOW, MANDATING THE CONTRACTOR MEET THESE REQUIREMENTS AT A MINIMUM. THE EMBANKMENTS SHALL HAVE A COMPACTED CLAY CORE WITH A CUTOFF TRENCH & BE IN ACCORDANCE WITH THE DETAILS SHOWN ON IN THIS PLAN. BERMS AND SPILLWAYS SHALL BE STABILIZED WITH EC-3 MATTING & THE REMAINING DISTURBED SLOPES SHALL BE STABILIZED WITH EC-2 MATTING. ALL BERM FILL MATERIAL SHALL CONSIST OF ME, CIE, SC OR GC SOILS & BE FREE OF WOOD, ROOTS, ROCKS OR ANY OTHER NON COMPACTING SOIL. COMPACTED FILL SHALL BE PROCTOR MAXIMUM DRY DENSITY ASTM D698 AND HAVE A MINIMUM OF 95% OF MAXIMUM DRY DENSITY AND 2%OF OPTIMUM MOISTURE CONTENT. ALL FILL MATERIALAND CONSTRUCTION SHALL BE APPROVED BY AN ONSITE GEOTECHNICAL ENGINEER PRESENT DURING THE CONSTRUCTION OF THE EMBANKMENTS AND FILL AREAS. F 1/ 2" zinc plated hook attached enth O/W fastener a e- I/H- Nn hole, 0 ( 0C®® P ® 0 ®® Isometric PU olate41/- HDPE unal PlPe P eulaert 1 P e.' HDPF, wlruclurnl plD.tic with O2-1/8- hole. and 1/4" plate aonuroctur. d by Ploatle OOOOO Eolutlom Inc. or equal 0000 3-- 1: .. iR.....yIYs?1py - • eilom nW aPlwnel Plate I- HDPF, alracL,c.I plastic rich 2- t/S' hole. and 1/4' Plate s("C lion monufeclured b7 Plazte Solu( i... Inc. or c,%I.1 5n' dia hole 0 0 o O o 00 o 0 RNP Elevation imyl TICCAGE rPL, StCzUTIl0NS P.O. Bev AMRT)FRRiS Reach. We, Ul U604 INC. 877- 1977-5727 neilmoc-,olAAm, ee StormRax- ROUND SERIES TRASH RACK CONCRETE MANHOLE STANDARD 60 INCH RACK SHOWN DIMENSIONS IN INCHES OR EQUIVALENT) PLAN SIDE VIEW StormllaxTM Round Series for Concrete Manhole ton Na MINA MIND Mac M6616 MITI MD 1&24 17M 14 SL 28 - 7A 30 115-36 21% 14)6 40 36 43 DS4B 17Y 18 64 . 48 s7 R460 27% 18K 6635 60 m Plastic Solutlons Inc. cusmNER PO em 4386. WM ch akS. VA 2}id zm 84901. M. aLJgau, VA 224N WM 877. 9727 phone PRO.EC'T. SS.40 722-2219 fix yN FIMneW LIRgN m ISOMETRIC CONCRETE SIRVGTYRE DimNMous INSIDE STRUCTURE DIMENSION OU781DE STRUCTURE D IMENSION AVAILABLE OPT1ONO GROSS BRACING FOR OVERHANG HOPE ANTI - VORTEX PLATE BATE DM MBY JIM 8Y: K I& UINUtKUKUUINU Ut I tIN 11UIN 5Y51 rIvI 'A' N Ut I tIN 11UIN bAJ11N 'bUt I AIL, SCALE 1"=20' PROPOSED 036" HDPE STANDPIPE (STR. 200) WITH TRASHRACK TO SERVE AS THE RISER STRUCTURE. SEE DETAIL ON THIS SHEET, OR -EQUIVALENT, FORTRASHRACK. RISER RIM ELEV.=470. 65. RISER TO HAVE ONE 1.25" LOW -FLOW ORIFICE INV=469.00). RISER INV OUT=467.00 (TO EXISTING DI).'TO PREVENT FLOTATION THE RISER BASE SHALL BE FIRMLY EMBEDDED 6" INTO AN A' THICK REINFORCED "I - CONCRETE FOUNDATION THAT IS 6'x6', AND BURIED BELOW GROUND. CONTRACTOR SHALL CONNECT I PROPOSED DETENTION BASIN B' s \ O = OUTFACE INTO EXISTING DI I - 1 ST sr- _ THE FLOOR OF DETENTION BASIN'B'SHALL BE SLOPED TO DRAIN TO THE _ I RISER (o.5o%MIN.). CONTRACTOR SHALL INSTALL GENTLY SLOPED CHANNEL " AT THE BASIN's LOW POINT TO ENSURE POSITIVE DRAINAGE THROUGHOUT. \ _ I I _ f M M M J 1L R \ i1 - --- 1N - 0 1 "\ // 472 i 472.65' RESTRICTIVE WEIR PLATE, AT LOW POINT, TO DRAIN THE SYSTEM. SEE - DETAIL ON THIS SHEET. i v , l x A a j:< l% d- 8 Ill IN a: - i PROPOSED ELEVATED 015 HP STORM PIPE ALLOWS MORE SIGNIFICANT & LESS FREQUENT STORM EV ENTS TO SAFELY BYPASS U/3, UNNjDDEER G,\ ROUNN/ DDDDETENNTIIIO/N SYSTEM - i U111111Vl\VIJl\L 11. L1.111V1\ U 1 U1LLY1 A FACILITY INSPECTIONS DURING CONSTRUCTION: CONSTRUCTION INSPECTIONS ARE CRITICAL TO ENSURE THE UNDERGROUND DETENTION SYSTEM IS PROPERLY BUILT. BECAUSETHE TIMING OF THE INSTALLATION IS DICTATED BY THE CONTRACTOR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER AND COUNTY INSPECTOR PRIOR TO INSTALLATION. MULTIPLE SITE VISITS AND INSPECTIONS ARE REQUIRED TO BE SCHEDULED BY THE CONTRACTOR, WITH THE ENGINEER AND COUNTY INSPECTOR, DURING THE FOLLOWING STAGES OF THE UNDERGROUND DETENTION SYSTEM CONSTRUCTION PROCESS: 1. PRE -CONSTRUCTION MEETING 2. INITIAL SITE PREPARATION ( INCLUDING INSTALLATION OF PROJECT E&S CONTROLS) 3. EXCAVATIONIGRADING(E.G., INTERIMIFINAL ELEVATIONS). 4. WHEN THE DETENTION PIPE SUBGRADE 15 READY FOR PIPE CONSTRUCTION, BUT BEFORE STONE BEDDING 15 INSTALLED, 5. AFTER STONE BEDDING IS PLACED AND COMPACTED, BUT PRIOR TO PIPE INSTALLATION. 6. AT THE TIME OFTHE PIPE INSTALLATION. 7. AFTER PIPE INSTALLATION, BUT PRIOR TO PLACING FILL OVER THE SYSTEM. S. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE) PLEASE ALSO SEE BELOW UNDER FACILITY MAINTENANCE FOR REQUIRED INSPECTIONS AFTER INSTALLATION IS COMPLETE. FACILITY INSPECTIONS & MAINTENANCE AFTER CONSTRUCTION: THE FOLLOWING MAINTENANCE TASKS SHALL BE PERFORMED BY THE CONTRACTOR IN THE FIRST YEAR FOLLOWING THE INSTALLATION OF THE UNDERGROUND DETENTION SYSTEM. x. FOR THE FIRSTYEAR FOLLOWING CONSTRUCTION, THE SITE SHALLBE INSPECTED BYTHE CONTRACTOR QUARTERLY AND AFTER STORM EVENTS THAT EXCEED t/z INCH OF RAINFALL. 2. THE CONTRACTOR SHALL LOOK FOR BARE OR ERODING AREAS IN THE CONTRIBUTING DRAINAGE AREA AND AROUND THE UNDERGROUND DETENTION SYSTEM AND MAKE SURE THEY ARE IMMEDIATELY STABILIZED. CONTRACTOR SHALL SPOT RESEED AS NECESSARY AND ENSURE ADEQUATE SITE COVERAGE IS PROVIDED WITHIN THE FIRST YEAR. ATTHE QUARTERLY INSPECTIONS, AND AFTER EACH RAINFALL EVENT IN EXCESS OFi", THE CONTRACTOR SHALL PERFORM THE ANNUAL MAINTENANCE TASKS DESCRIBED BELOW IN #3. AFTER THE FIRST YEAR THE OWNER SHALL PERFORM FOLLOW-UP INSPECTIONS ANNUALLY AND AFTER EACH SIGNIFICANT RAINFALL EVENT: 3. A SPRING MAINTENANCE INSPECTION AND CLEANUP SHALL BE CONDUCTED ANNUALLY. THE MAINTENANCE PROGRAM FOR THE UNDERGROUND DETENTION SYSTEM SHALL INCLUDE CLEANING IT ANNUALLY OF TRASH, DEBRIS & SEDIMENT AND ENSURING THE INTEGRITY OF THE WEIR PLATE, TRASH RACK AND OUTFALL & INFLOW PIPES. THE OWNER SHALL ENSURETHE SYSTEM IS OPERATING AS INTENDED AND 15 NOT CLOGGED OR DAMAGED. THE OWNER SHALL IMMEDIATELY CLEAN & REPAIR THE FACILITY AS NECESSARY AND SHALL PAY SPECIAL ATTENTION TO THE INLET AND OUTLET LOCATIONS. THE ACCESS MANHOLES SHALL BE USED FOR INSPECTION AND MAINTENANCE. UNDERGROUND DETENTION SYSTEM MINIMUM TRENCH & BACKFILL REQUIREMENTS: 1. THE TRENCH CONTAINING THE SINGLE RUN OF 36" HP STORM PIPE (STR. 5) SHALL HAVE A 64" WIDE TRENCH WIDTH. THE TRENCH CONTAINING THE 36" HP STORM PIPE, THE 15" HP STORM PIPE BYPASS AND THE JI HP STORM PIPE OUTFALLSHALL HAVE AN 112" WIDE TRENCH WIDTH. A 0 ri PROPOSED 20' WIDE GRADED SIDEWALK WITH A 2o/D - - AIXIMUM CROSS SLOPE TO SERVE AS TOP OF DAM- f' W W `W W SEE GENERAL SWM FACILITY NOTES #2 & sT _11-Si- 4 ON THE PREVIOUS SHEET FOR DESIGN -= h - OFOUTLETPROTECTION. - _ PROTECTION TO EXTEND TO RISER TO ^- REDUCETHE RISK OF CLOGGING. i - - Q o 47265 ti.^ r PROPOSEDV I ( WIDTH SWM S T. I I I F / / STORM PIPE, WITH STD. PRIVATE PARKING AREA & SIDEWAL I 2 EW-6, TO SERVE AS PRIMARY WITHIN SWM ESMT. TO SERVE AS IL UGD SYSTEM 'A' OUTFACE ACCESS TO SWM FACILITIES I' I ) 036" INV. I j 469. 25' SEE THIS SHEET FOR SCALED PROFILES I - OF THE SWM FACILITIES, TYP. PROPOSED UNDERGROUND DETENTION SYSTEM WTO 036" INV. ATTENUATE RUNOFF CAUSED 469.94' FROM THIS DEVELOPMENT. I a _ i I PROPOSEDSTRUCTURES z, 4, 6 & 8 SHALL BE 6I j 4 INSTALLED WITH STAIRS & SHALL SERVE AS ACCESS FOR INSPECTION &MAINTENANCE, TYP. ` 61 STIR. 4 SHALL HAVE A REBAR GRATETRASHRACK i ACROSS ITS THROAT'S OPENING TO REDUCE THE RISK OF CLOGGING IN UGD SYSTEM A. 5V I/ / 11 - U"J 1 UNDERGROUND DETENTION SYSTEM GENERAL NOTES: 1. TRASHRACKS SHALL BE INSTALLED ON ALL ORIFICES, INCLUDING THOSE LOCATED ALONG THE WEIR PLATE WITHIN THE UNDERGROUND DETENTION SYSTEM, IN ACCORDANCE w/ THE DETAIL SHOWN ON ON THIS SHEET (OR EQUIVALENT). 2. DETENTION SYSTEM's WEIR PLATETO BE PRE -MANUFACTURED AND DELIVERED TO THE SITE. WEIR PLATE SHALL BE SECURELY AFFIXED TO THE INSIDE WALLS OF THE MANHOLE STRUCTURE. WEIR PLATE'S MIDPOINTTO BE CENTERED ON THE MANHOLE, SPLITTING THE MH IN TWO TO OPTIMIZE AREA/ACCESS ON BOTH SIDES OF THE WEIR PLATE. 3. ANY RETAINING WALLS AND FOUNDATIONS CONSTRUCTED IN THE VICINITY OF THE UNDERGROUND DETENTION SYSTEM SHALL BE REVIEWED AND APPROVED BYTHE ARCHITECT AND A GEOTECHNICAL ENGINEER. UNDER NO CIRCUMSTANCES SHALL ANY PORTION OF THE UNDERGROUND DETENTION SYSTEM BE INSTALLED WITHIN THE PROPOSED BUILDING AND PARKING STRUCTURES, OR ON AN ADJACENT PROPERTY. 4. PUBLIC SEMINOLE TRAIL RIGHT- OF-WAY & SIDEWALK, AND THE PRIVATE SIDEWALK & PARKING AREA LOCATED WITHIN THE SWM EASEMENT, SHALL SERVE AS ACCESS TO THE PROPOSED UNDERGROUND DETENTION SYSTEM. S. CONTACT COLLINS ENGINEERING (434. 293.3719) REGARDING ANY QUESTIONS CONCERNING THE UNDERGROUND DETENTION SYSTEM. 6, ALL FILL EMBANKMENT MATERIAL SHALL CONSIST PREDOMINANTLY OF SOIL AND BE PLACED IN SUCCESSIVE UNIFORM LAYERS NOT MORE THAN 8 INCHES IN THICKNESS BEFORE COMPACTION OVER THE ENTIRE AREA IN ACCORDANCE WITH CURRENT VDOT ROAD AND BRIDGE SPECIFICATIONS, OR THE FILL EMBANKMENT MATERIAL SHALL MEET THE PIPE MANUFACTURER'S SPECIFICATIONS OUTLINED BELOW WHICHEVER IS MORE STRINGENT). 7. ALL FILL SHALL BE PLACED AT 95% COMPACTION AND TESTED BY A GEOTECHNICAL ENGINEER TO ENSURE COMPACTION IS REACHED AND MAINTAINED, OR THE FILL SHALL MEET THE PIPE MANUFACTURER'S SPECIFICATIONS OUTLINED BELOW WHICHEVER IS MORE STRINGENT). B. VDOT STD. IS-1 & ST-1 ARE REQUIRED ON ALL PROPOSED PUBLIC STRUCTURES AND THE UNDERGROUND DETENTION SYSTEM's JUNCTIONS. 9. PRIOR TO CONSTRUCTION THE CONTRACTOR SHALL TEST -DIG AT THE EXISTING INLET & OUTFALL TO CONFIRM THE INVERTS AND TO ENSURE THE PROPOSED GRADES CAN BE ACHIEVED. CONTRACTOR SHALL CONTACT COLLINS ENGINEERING OF ANY DISCREPANCIES IN THE HORIZONTAL OR VERTICAL ALIGNMENT PRIOR TO ORDERING AND CONSTRUCTION. IN THE EVENT THE EXISTING STORM DROP INLET CANNOT BE PRESERVED WITH THE INSTALLATION OF THE NEW OUTFALL, THE DI WILL NEED TO BE REPLACED. 10.ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR CONSTRUCTION INDUSTRY 29 CFR PART 1926). 11.PENDING PRIOR APPROVAL BY COLLINS ENGINEERING, THE DRAINAGE PIPE MATERIALS MAY BE SUBSTITUTED. ALL DRAINAGE PIPE INSTALLATION PRACTICES SHALL BE IN ACCORDANCE WITH CURRENT VDOT STANDARDS AND REQUIREMENTS. CONTRACTOR SHALL ENSURE MINIMUM COVER REQUIREMENTS ARE MET WITH ANY PIPE SUBSTITUTION. 2. CONTRACTOR SHALL WRAP THE EXCAVATED TRENCHES WITH A 6 OUNCE FILTER FABRIC CLOTH. A SUITABLE FOUNDATION SHALL BE BENEATH THE TRENCHES' FILTER FABRIC CLOTHS. 3. TRENCHES TO INCLUDE A 6" #57 STONE BED AT 95% COMPACTION BENEATH THE HP STORM PIPES. 0 4. TRENCHES SHALL BE BACKFILLEDWITH #57 STONE AT 95k COMPACTION AND SHALL EXTEND A MINIMUM OF 6 VERTICALLY ABOVE THE CROWN OF THE HP STORM PIPES. I 5. THE TOP OF THE # 57 STONE SHALL BE COVERED WITH A 6 OUNCE FILTER FABRIC CLOTH OVERLAPPING THE PREVIOUSLY INSTALLED CLOTH THAT SURROUNDS THE BOTTOM AND SIDES OF THE TRENCHES. N N 00 N 00 't 6. SUITABLE FILL REACHING THEFINISHEDGRADESSHALLBEAPPLIEDABOVETHETOPLAYER'S FILTER CLOTH, I- O O MEETING MINIMUM PIPE MANUFACTURER'S REQUIREMENTS TO PREVENT FLOATATION AND ENSURE PIPE O O O O O INTEGRITY IS MAINTAINED. j O O~~ D 0 0 0~ 7. A MINIMUM COVER OF I2" IS REQUIRED ABOVE THE CROWN OF THE HP STORM PIPES. O O d: `n T- d- 8. SEETHE'HP STORM TRENCH INSTALLATION DETAIL'ON THIS SHEET FOR ADDITIONAL UNDERGROUND cD r3 CD DETENTION SYSTEM PIPE REQUIREMENTS. r? ` n 01 , STR:2 MODIFIED C) O sC) r- Coo 4 L t- VDOT MH-1 O -j oN o r n STA. 0+61.62t 1 n - » tzzoo Lsi r zzo TP 474. 00 co INVIN: 469.25 TO 41 Y E- i II la-»» ZZZ E- E- IIInwI nI IT'. hen 4c T-n 1 n 5 m - n n- ZZZ PROPOSED AC FOR INSPECTI PROPOSED LOWER 012" HP STO EW-6 (OUTFALL INVE UNDERGROUND DETENTION SYS 100-yr PEAK DESIGN WSE 10-yr PEAK DESIGN WSE 2-yr PEAK DESIGN WSE 1-yr PEAK DESIGN WSE PROPOSED 036" HDPE STANDPIPE (STR. 2 TRASHRACK TO SERVE ASTHE RISER STRUCTURE. SE ON THIS SHEET, OR EQUIVALENT, FORTRASHRACK. P ELEV =470.65. RISERTO HAVE ONE 1.25" LOW-FLON INV. 469.00). RISER INV OUT467.00 (TO EXISTIN PREVENT FLOTATION THE RISER BASE SHALL BI EMBEDDED 6" INTO AN 38" THICK REINFORCED CC FOUNDATION THAT IS 6'x6', AND BURIED BELOW C STR: EX 1 EXIS III STA. 0+i TP=4 INV IN: 466. 19 TIC NV IN: 466.34 (TO RE NV IN: 466.09 (TO REI MAIN) 0+50 1+00 1+ 50 2+00 WEIR PLATE DETAIL SCALI 84' SIMULATION OFPIPEOUTFALL OVERFLOW WEIR IS HYDRAULICALLY 2IMMEDIATELY UPLAND OF EQUIVALENTTO AN ORIFICE WITH AN WEIR PLATE WITHIN MH APPROX. DIAMETER OF 09.86" ELEV= 472.25' TOP OF PIPE INSTALLTRASH RACKS ON ALL ELEV.-- a, z ' ORIFICES, TYP. SEE THIS SHEET 0 FOR DETAIL, OR EQUIVALENT. ELEV.=469z5" o VD BOTTOM ( F PIPE) N MANUFACTURE/INSTALL( i)ONE 0z" ENFORCED zz GA.STEELWEIR PLATE, LOW - FLOW ORIFICE IN THE WEIR PLATE OR EQUIVALENT MATERIAL STRENGTH- ATTHELOW POINT OFTHE DETENTION SEE'UNDERGROUND DETENTION SYSTEM SYSTEM (INVERT ELEVATION 469.25'). GENERAL NOTE, #2 ON THIS SHEET. SEE GENERAL SWM FACILITY NOTE #4 ON THE PREVIOUS SHEET- 4r STR: 8 MODIFIED VDOT MH- 1 STA. 0+54.80 TP=474. 79 INV IN: 470. 55 TO 4 INV OUT: 470.45 TO 15" HP STORM PIPE 47.54 LF ® 3.057. D SERIES OF 36" HP STORM PIPES WITH STREAM RESTRICTIVE WEIR PLATE TO PROPOSED UNDERGROUND DETENTION 470 A'- 30" HP STORM PIPES TO HAVE 0.50% NITH A TOTAL LENGTH OF 117. 5' PIPE SEE GENERAL SWM FACILITY NOTES 2 & ON THE PREVIOUS SHEET FOR C( 4 DESIGN OF OUTLET PROTECTION. N465 25'. TO ET FOR DESIGN OFOUTLET PROTECTION. UGD SYSTEM AND DETENTION BASIN L. e GRADE DETENTION BASIN U CONSTRUCTION NOTES: I' TH o FACILITY PLANTING SPECIFICATIONS: F T 1. THE DETENTION BASIN SHALL HAVE A TURF GROUND COVER, SUCH AS GRASS OR SOME OTHER FORM OF A VEGETATIVE GROUNDCOVER. LANDSCAPING BEYOND THIS IS OPTIONAL Q `P_ AND IS NOT REQUIRED FROM A STORMWATER MANAGEMENT STANDPOINT. HOWEVER LANDSCAPING MAY BE PROPOSED WITHIN THE FACILITY. SEE LANDSCAPING PLAN FOR ADDITIONAL DETAILS PERTAINING TO THE SITE' s OVERALL LANDSCAPING REQUIREMENTS. SCOTT R. LINSt2 2. THE PROPOSED INTERIOR SIDE SLOPES OF THE BASIN SHALL BE A MAXIMUM OF 3:1 TO REDUCE THE RISK OF EROSION. THE PROPOSED FLOOR SLOPES SHALL BE GRADED TO PROVIDE O POSITIVE DRAINAGE AT ALLTIMES TO THE RISER STRUCTURE. Li Lic. No. 035791,'D 3. WOODY VEGETATION SHALL NOT BE PLANTED OR ALLOWED TO GROW WITHIN 15 FEET OF THE TOE OF THE EMBANKMENT NOR WITHIN 25 FEET OF THE PRINCIPAL SPILLWAY 110 9 18 ZO Q'I STRUCTURE. :V/ 4. THE SOILS IN THE STORMWATER BUFFER AREA ARE OFTEN SEVERELY COMPACTED DURING THE CONSTRUCTION PROCESS TO ENSURE STABILITY THE DENSITY OF THESE COMPACTED O YS'1% SOILS CAN BE SO GREAT THATITEFFECTIVELYPREVENTSROOTPENETRATIONAND, THEREFORE, MAY LEAD TO PREMATURE MORTALITY OR LOSS OF VIGOR. AS A RULE OF THUMB, PLANTING HOLES SHOULD BETHREETIMES DEEPER AND WIDER THAN THE DIAMETER OFTHE ROOTBALL FOR BALL -AND -BURLAP STOCK, AND FIVE TIMES DEEPER AND WIDER FOR CONTAINER -GROWN STOCK. 5. EXTRA MULCHING AROUND THE BASE OF TREES AND SHRUBS IS STRONGLY RECOMMENDED AS A MEANS OF CONSERVING MOISTURE AND SUPPRESSING WEEDS. CONTRACTOR REQUIREMENTS: 1. THE CONTRACTOR SHALL BE RESPONSIBLE FOR LAYOUT OF ALL WORK COVERED UNDER THESE PLANS. 2. LANDSCAPE CONTRACTOR SHALL REFER TO THE STANDARDIZED LANDSCAPE SPECIFICATIONS FOR THE STATE OF VIRGINIA FOR ADDITIONAL INFORMATION. THE CONTRACTOR SHALL ABIDE BY ITS CONTENTS; HOWEVER ANY NOTES OR SPECIFICATIONS ON THE PLANS SHALL SUPERSEDE THOSE OUTLINED IN THE SPECIFICATIONS MANUAL (COPIES ARE AVAILABLE FOR A FEE FROM THE VIRGINIA CHAPTER OF THEAMERICAN SOCIETY OF LANDSCAPE ARCHITECTS VIRGINIA NURSERYMEN'S ASSOCIATION INC. ANDTHE VIRGINIASOCIETY OF LANDSCAPE DESIGNERS). ALL DISCREPANCIES SHALL BE BROUGHT TO THE ATTENTION OF COLLINS ENGINEERING PRIOR TO THE CORRESPONDING CONSTRUCTION ACTIVITY. 3. ALL PLANT MATERIAL SHALL MEET THE MINIMUM SPECIFICATIONS AND STANDARDS DESCRIBED IN THE CURRENT ISSUE OF THE AMERICAN STANDARD FOR NURSERY STOCK PUBLISHED BYTHE AMERICAN ASSOCIATION OF NURSERYMEN, 1250 STREET, NW, SUITE 500, WASHINGTON, DC 20005. 4. THE CONTRACTOR SHALL VERIFY ALL DIMENSIONS IN THE FIELD AND NOTIFY THE DESIGNER OF ANY VARIANCE FROM THE PLAN. FN- 5. THE LANDSCAPE CONTRACTOR IS RESPONSIBLE FOR VERIFYING THE LOCATION OF ANY ONSITE UTILITIES (CALL MISS UTILITY 1-800-552-7001 BEFORE ANY EXCAVATION). W 6. REFER TO THE APPROVED FINAL SITE PLANS FOR ANY DETAILED SITE INFORMATION. m: 7. ALL WORK SHALL BE COORDINATED WITH OTHER PARTIES. p 8. PLANTS WILL BE PREPARED FORSHIPMENTINAMANNERTHATWILLNOTCAUSEDAMAGETOTHEBARK, BUDS, BRANCHES, STEMS, OR OVERALL SHAPE OF THE STOCK. CONTAINER U GROWN PLANTS WILL BE TRANSPORTED IN THE CONTAINERS IN WHICH THEY HAVE GROWN, z 9. ALL PLANT MATERIAL, UNLESS OTHERWISE SPECIFIED, SHALL BE UNIFORMLY BRANCHED AND HAVE A VIGOROUS ROOT SYSTEM. PLANT MATERIAL SHALL BE HEALTHY, VIGOROUS, AND FREE FROM DEFECTS, DECAY, DISEASES, INSECT PEST EGGS, AND ALL FORMS OF INFESTATION. ALL PLANT MATERIALSHALL BE FRESH, FREE FROM TRANSPLANT SHOCK OR VISIBLE a m 0 WILT. PLANTS DEEMED UNHEALTHY WILL BE REJECTED. 10. ALL CONTAINER STOCK SHALL HAVE BEEN PROPAGATED IN A CONTAINER LONG ENOUGH FOR THE ROOT SYSTEM TO HAVE DEVELOPED SUFFICIENTLY TO HOLD ITS SOIL. CONTAINER Z g STOCK WITH POORLY DEVELOPED ROOT SYSTEMSWILLNOTBEACCEPTED. LU K 11. PLANTS NOT INSTALLED ON THE DAY OF ARRIVAL ON SITE SHALL BE STORED AND PROTECTED BY THE CONTAINER. OUTSIDE STORAGE AREAS WILL BE SHADED AND PROTECTED FROM THE WIND AND SUN. PLANTS STORED ON SITE SHALL BE PROTECTED FROM ANY DRYING ATALL TIMES BY COVERING THE BALLS OR ROOTS WITH MOIST SAWDUST, WET BURLAP, O p U) W WOOD CHIPS, SHREDDED BARK, PEAT MOSS, OR OTHER SIMILAR MULCHING MATERIAL. in m J 12. THE OWNER RESERVES THE RIGHTTO SUBSTITUTE PLANT MATERIAL TYPE, SIZE AND/OR QUANTITY. ANY SUBSTITUTIONS MUST BE APPROVED BY THE INSPECTOR INITIALLY, AND THEN Q THE DESIGNER. W a", w 13. MINOR FIELD ADJUSTMENTS MAY BE NECESSARYDUETOSITECONDITIONS (EX: FOOTBALL AND UTILITY CONFLICT). MAJOR ADJUSTMENTS MUST BE APPROVED BY THE DESIGNER. Z a 14. NO PLANTING SHALL OCCUR WHEN THESOILISFROZEN. 15. PLANT MATERIAL SHALL BE PLACED IN EXISTING SOIL WITH EACH PLANTING PIT EXCAVATED TO A SIZE SUFFICIENT TO CONTAIN THE ENTIRE ROOT BALL OR ROOT MASS, WITHOUT N CRAMPING ROOTSTOCK. 16. THE CONTRACTOR SHALL MAINTAINAONE 1 CALENDAR YEAR 90%CARE AND REPLACEMENT WARRANTY FOR ALL PLANTINGS. THE PERIOD OF CARE AND REPLACEMENT SHALL BEGIN O W w AFTER INSPECTION AND APPROVALOF THE COMPLETE INSTALLATION OF ALL PLANTS AND CONTINUE FOR ONE CALENDAR YEAR.CC 17. THE CONTRACTOR IS RESPONSIBLE FOR REMOVALAND DISPOSAL OF TRASH AND DEBRIS WITHIN THE LIMITS OF THE PLANTING ON A DAILY BASIS. 18. THE CONTRACTOR WILL NOT BE RESPONSIBLE FOR PLANT MATERIALTHAT HAS BEEN DAMAGED BY VANDALISM, FIRE, OR OTHER ACTIVITIES BEYOND THE CONTRACTOR's CONTROL. FACILITY CONSTRUCTION 1. THE DETENTION BASIN MAY SERVE AS A SEDIMENT BASIN AND/OR TRAP DURING PROJECT CONSTRUCTION. IF THIS IS DONE THE VOLUME SHALL BE BASED ON THE MORE STRINGENT SIZING RULE EROSION AND SEDIMENT CONTROL REQUIREMENTS VS. STORMWATER TREATMENT REQUIREMENTS). INSTALLATION OF THE PERMANENT RISER SHALL BE INITIATED Q DURING THE CONSTRUCTION PHASE, AND DESIGNELEVATIONS SHALL BE SET WITH FINAL CLEANOUT OF THE SEDIMENT BASIN AND CONVERSION TO THE POST -CONSTRUCTION FACILITY IN MIND. APPROPRIATE PROCEDURES SHALL BE IMPLEMENTED TO PREVENT DISCHARGE OF TURBULENT WATERS WHEN THE BASIN IS BEING CONVERTED TO AN DETENTION BASIN. 2. THE DETENTION BASIN SHALL ONLY BE CONSTRUCTED AFTER THE CONTRIBUTING DRAINAGE AREA TO THE FACILITY IS COMPLETELY STABILIZED. IF THE SITE OF THE PROPOSED SWM FACILITY WILL BE USED AS A SEDIMENT TRAP OR BASIN DURING THE CONSTRUCTION PHASE, THEN THE FACILITY WILL BE DEWATERED, DREDGED AND RE -GRADED TO DESIGN DIMENSIONS AFTER THE ORIGINAL SITE CONSTRUCTION IS COMPLETE. MODIFICATIONS SHALL BE MADE TO THE RISER, ORIFICES AND BARRELS AS REQUIRED SO THAT THEY ARE CONSISTENT WITH THE FINAL CONSTRUCTION SPECIFICATIONS. rrN No 3. THE CONTRACTOR SHALLASSEMBLE CONSTRUCTION MATERIALS ON - SITE, MAKING SURE THEY MEET DESIGN SPECIFICATIONS AND ARE PREPARED AT STAGING AREAS WHEN POSSIBLE. iz 6 4. THE CONTRACTOR SHALL CLEAR AND STRIP THE PROJECT AREA IF REQUIRED TO THE DESIRED SUB -GRADE. 1 5. INSTALL E&S CONTROLS PRIOR TO CONSTRUCTION OF THE BASIN INCLUDING TEMPORARY DE -WATERING DEVICES AND STORMWATER DIVERSION PRACTICES. ALL AREAS II a6 SURROUNDING THE BASIN THAT ARE GRADED OR DENUDED DURING CONSTRUCTION SHALL BE PLANTED WITH TURF GRASS, NATIVE PLANTINGS, OR OTHER APPROVED METHODS OF SOIL STABILIZATION. 6. CONTRACTOR SHALL EXCAVATETHE CORE TRENCH AND INSTALLTHE SPILLWAY PIPE DURING THE ESC PHASE. 7. CONTRACTOR SHALLALSO INSTALL THE RISER, OUTFLOW STRUCTURE AND/OR THE BARREL(s) WITH PERMANENT COLLARS DURING THE ESC PHASE TO ENSURE THE TOP INVERT OF THE OVERFLOW WEIR IS CONSTRUCTED LEVEL AT THE DESIGN ELEVATION. 8. THE CONTRACTOR SHALL CONSTRUCT THE EMBANKMENT AND ANY INTERNAL BERMS IN 8-TO 12-INCH LIFTS, COMPACTION SHALL BE COMPLETED IN LIFTS WITH APPROPRIATE EQU I PMENT, TI lE GONTRAUTGR SI ' ALL ALSO AD! I ERE TO TI 1 E CLAY LINER SPEC' F1 CATIONS UTLINED IN TABLE 14.4 BELOW: Table 14.4. Clay Liner Soecmcadorts Property Test Method UnR Specification Permeability ASTM D-2434 Cm/sec 1 X W PlasIciityr Index of Gay ASTM D423/424 I Not less than 15 Liquid Limit of Clay ASTM D-2216 I Not less than 30 ClayParticles Pass 111Q ASTM D-422 Not less than 30 Gla Cqm ction ASTM o-2216 Ye 95% of standard ckn dens Source: Virginia S3ormwater ManagBment HanaDDOR I1999) 9. UPON COMPLETION OF THE EMBANKMENT GRADING, THE CONTRACTOR SHALL EXCAVATE/GRADE UNTIL THE APPROPRIATE ELEVATION AND DESIRED CONTOURS ARE ACHIEVED FOR THE BOTTOM AND SIDE SLOPES OF THE BASIN. 10. CONTRACTOR SHALL THEN CONSTRUCT THE EMERGENCY SPILLWAY IN CUT OR STRUCTURALLY STABILIZED SOILS. 11. THE CONTRACTOR SHALL THEN FINISH CONSTRUCTION OF ALL OUTLET STRUCTURES INCLUDING DOWNSTREAM RIP -RAP APRON PROTECTION. 12. THE CONTRACTOR SHALL NEXT STABILIZE EXPOSED SOILS BY HYDROSEEDING OR SEEDING OVER STRAW. 13. THE CONTRACTOR SHALL THEN INSTALLTHE APPROPRIATE BASIN LANDSCAPING IN ACCORDANCE WITH THE APPROVED PLANS. FACILITY MAINTENANCE: MAINTENANCE OFTHE DETENTION BASIN IS DRIVEN BY ANNUAL INSPECTIONS THAT EVALUATE THE CONDITION AND PERFORMANCE OF THE FACILITIES. DURING THESE INSPECTIONS THE FOLLOWING TASKS SHALL BE PERFORMED BYTHE CONTRACTOR IN THE FIRST YEAR FOLLOWING INSTALLATION, AND THE OWNER THEREAFTER: 1- MEASURE SEDIMENT ACCUMULATION LEVELS IN THE BASIN. 2. MONITOR THE GROWTH OF THE GROUNDCOVER AND ANYTREES AND SHRUBS PLANTED AS APPLICABLE. RECORD THE SPECIES AND THEIR APPROXIMATE COVERAGE AND NOTE THE PRESENCE OF ANY INVASIVE PLANT SPECIES, AS APPLICABLE. 3. INSPECT THE CONDITION OF STORMWATER INLETS TO THE BASIN FOR MATERIAL DAMAGE, EROSION OR UNDERCUTTING. 4. INSPECT THE BANKS OF UPSTREAM AND DOWNSTREAM CHANNELS, IF APPLICABLE, FOR EVIDENCE OF SLOUGHING, ANIMAL BURROWS, BOGGY AREAS, WOODY GROWTH, OR GULLY EROSION THAT MAY UNDERMINE EMBANKMENT INTEGRITY. 5. INSPECT BASIN OUTFALL CHANNEL, IF APPLICABLE, FOR EROSION., UNDERCUTTING, RIP -RAP DISPLACEMENT, WOODY GROWTH, etc. 6. INSPECT CONDITION OF PRINCIPAL SPILLWAY AND RISER FOR EVIDENCE OF SPALLING JOINT FAILURE LEAKAGE CORROSION OR OTHER FAILURES. 7. INSPECT CONDITION OF ALLTRASH RACKS REVERSE SLOPED PIPES OR FLASHBOARD RISERS FOR EVIDENCE OF CLOGGING LEAKAGE DEBRIS ACCUMULATION OR OTHER FAILURES. B. INSPECT MAINTENANCE ACCESS TO ENSURE IT IS FREE OF WOODY VEGETATION AND CHECKTO SEE WHETHER VALVES MANHOLES AND LOCKS CAN BE OPENED AND OPERATED. 9. INSPECT INTERNAL AND EXTERNAL SIDE SLOPES OF THE BASIN FOR EVIDENCE OF SPARSE VEGETATIVE COVER, EROSION, OR SLUMPING. 10. OWNER OR CONTRACTOR SHALL MAKE NEEDED REPAIRS IMMEDIATELY. FACILITY INSPECTION: MULTIPLE INSPECTIONS ARE CRITICALTO ENSURE THE BASIN s ARE PROPERLY CONSTRUCTED. BECAUSE THE TIMING OFTHE INSTALLATION IS DICTATED BY THE CONTRACTOR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER AND INSPECTOR PRIOR TO INSTALLATION. MULTIPLE SITE VISITS AND INSPECTIONS ARE REQUIRED TO BE SCHEDULED BYTHE CONTRACTOR WITH THE ENGINEER AND INSPECTOR DURING THE FOLLOWING STAGES OFTHE DETENTION BASIN's CONSTRUCTION PROCESS: 1. PRE -CONSTRUCTION MEETING 2. INITIAL SITE PREPARATION (INCLUDING INSTALLATION OF PROJECT E&S CONTROLS) 3. EXCAVATION/GRADING (e.g., INTERIM/FINAL ELEVATIONS) 4. DETENTION BASIN INSTALLATION (e.g., INTERIM AND FINAL ELEVATIONS) 5. INSTALLATION OF THE EMBANKMENT, THE RISER/ PRIMARY SPILLWAY, AND THE OUTLET STRUCTURE(s). 6. PLANTING PHASE (WITH AN EXPERIENCED LANDSCAPE ARCHITECT PRESENT/DIRECTING IF APPLICABLE) 7. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE) 475 STR:4 MODIFIED VDOT DI-3B, L=6' 7 STA. 1+ 03.97 TP=475, 20 INV IN: 469.56 TO 6 INV IN: 471.56 TO 102 470 INV OUT: 469.46 TO 2 NV OUT: 47 . TO 8 11 36" HP STORM PIPES, PART OF UNDERGROUND DETENTION SYSTEM 'A' 15 HP STORM PIPE, 5.83 LF 0 1 EMERGENCY OVERFLOW/BYPASS) PROPOSED ELEVATED 015" HP STORM PIPES ALLOW MORE SIGNIFICANT & LESS FREQUENT STORM EVENTS TO SAFELY BYPASS UNDERGROUND DETENTION SYSTEM 'A' 4601 O i r II I It l PROFILE SCALES: 1"=5' (V) 1"= 50'( H) 0+ 50 0+75 BYPASS TABLE 1, RECOMMENDED MINIMUM TRENCH WIDTHS HP STORM TRENCH INSTALLATION DETAIL I MIN. COVER TO MIN. COVER TO RIGID PAVEMENT. H FLEXIBLE PAVEMENT, H FINAL 1 OAC BACKFILL SPRINGLINE -- INITIAL BACKFILL HAUNCHBEDDING4^ FOR 12"-24" PIPES""- 6" FOR1730'4K)'PIPE MIN TRENCHWIDTH _ SUITABLE NOTES: F (SEE TABLE) -1 FOUNDATION 1. ALL PIPE SYSTEMS SHALL BE INSTALLED IN ACCORDANCE Von H ASTM D2321,`STANDARD PRACTICE FOR UNDERGROUND INSTALLATION OF THERMOPLASTIC PIPE FOR SEWERS AND OTHER GRAVITY FLOW APPLICATIONS', LATEST ADDITION, WITH THE EXCEPTION THAT THE INITIAL BACKFILL MAY EMEND TO THE CROWN OF THE PIPE. SOIL CLASSIFICATIONS ARE PER THE LATEST VERSION OF ASTM D2321. CLASS NB MATERIALS (MH, CH) AS DEFINED IN PREVIOUS VERSIONS OF ASTM D2321 ARE NOT APPROPRIATE BACKFILL MATERIALS. 2. MEASURES SHOULD BE TAKEN TO PREVENT MIGRATION OF NATIVE FINES INTO BACKFILL MATERIAL, WHEN REQUIRED. 3. FOUNDATION: WHERE THE TRENCH BOTTOM IS UNSTABLE THE CONTRACTOR SHALL EXCAVATE TO A DEPTH REQUIRED BY THE ENGINEER AND REPLACE WITH SUITABLE MATERIAL AS SPECIFIED BY THE ENGINEER. AS AN ALTERNATIVE AND AT THE DISCRETION OF THE DESIGN ENGINEER, THE TRENCH BOTTOM MAY BE STABILIZED USING A GEOTEXTILE MATERIAL. 4. BEODING: SUITABLE MATERIAL SHALL BE CLASS I II IN, OR IV. THE CONTRACTOR SHALL PROVIDE DOCUMENTATION FOR MATERIAL SPECIFICATION TO ENGINEER. COMPACTION SHALL BE SPECIFIED BY THE ENGINEER IN ACCORDANCE WITH TABLE 3 FOR THE APPLICABLE FILL HEIGHTS LISTED. UNLESS OTHERWISE NOTED BY THE ENGINEER MINIMUM BEDDING THICKNESS SHALL BE 4^ 100mm FOR 12"- 2a` 300mm4WOmm DIAMETER PIPE; e' 151Nnm FOR 30'-0' SOYI500mm P DIAMETER PIPE. THE MIDDLE 1/4BENEATH THE PIPE INVERT SHALL BE LOOSELY PLACED. PLEASE NOTE, CLASS N MATERIAL HAS LIMITED APPLICATION AND CAN BE DIFFICULT TO PLACE AND COMPACT; USE ONLY WITH THE APPROVAL OF A 801E EXPERT. 5. INITIAL BACKFILL SUITABLE MATERIAL SHALL BE CLASS L II, III OR IV IN THE PIPE ZONE EXTENDING TO THE CROWN OF THE PIPE. THE CONTRACTOR SHALL PROVIDE DOCUMENTATION FOR MATERIAL SPECIFICATION TO ENGINEER. MATERIAL SHALL BE INSTALLED AS REQUIRED IN ASTM D2321. LATEST EDITION. COMPACTION SHALL BE SPECIFIED BYTHE ENGINEER IN ACCORDANCE WITH TABLE 3 FOR THE APPLICABLE FILL HEIGHTS LISTED. PLEASE NOTE, CLASS N MATERIAL HAS LIMITED APPLICATION AND CAN BE DIFFICULT TO PLACE AND COMPACT; USE ONLY WITH THEAPPROVAL OF A SOIL EXPERT. 6. MINIMUM COVER: MINIMUM COVER, H. IN NON -TRAFFIC APPLICATIONS (GRASS OR LANDSCAPE AREAS) IS 1Y (300mm) FROM THETOPOFPIPETOGROUNDSURFACE. ADDITIONAL COVER MAYBE REQUIRED TO PREVENT FLOTATION. FORTRAFFIC PIPE MAN. MIN. TRENCH WIDTH r 31r 300mm 82mm 5 34' 3] 1W 664, 18' 38' 450mm 91m 9m 24" BOOmm 1219mm SIT 58^ 7Nount422mm 36^ 64^ 900mm 1628mm 42' 72" 1050mm 1829mm 4 mm I203212W 1500mm 2438mm TABLE 2, MINIMUM RECOMMENDEDCOVERBASEDON VEHICLE LOADING CONDITIONS SURFACE WE LOADING CONDITION PIPE OIAM. H- 25 HEAW CONSTRUCTION 75T AXLE LOAD)' 17-48- 300mm-1200mm 1Y 305mm 1219mm fist 1500mm 24' 61omm 80' 1U,kem TABLE3. MAXIMUMCOVER FORADSHP STORM PIPE, ft IlAssl CLASS II CLASS IN CLASS V PIPE DIA COMPACTED 95% 90% 85% 1 95% 1 90% 95% 12" 41 28 21 16 20 16 16 30onSY) 125m) F&5m) 6.4m) 4. 9m) 6.1m) 4.9m) aE.) 15- 42 29 21 16 21 t6 16 375mm) 12.em) 8.8m) 6.4m) 4.9m) 6.4m) 4.9m) 4.9m) 18' a8 30 21 16 22 17 16 450mm) 13.4m) 9.1m) 6.4m) 4.9m) 6.7m) 5.2ra) 4.9m) 1st 1st1A 14 800mm 11.3m 7. 8m 1 ) 5. 5m 4.hR 1 5.8m 4.3m 4.3m l ) 3w 39 14 750mm) 11.9m) 8. 2m) 2 5. 6m) 8 4.3m) 36 S.Bm) 4.em) A3 4.3m) sr 28 2074 101411 10 90@mm) e.6m 6.1m) 4.3m) 3.0m) 4.3m) 3.4m) 3.0m) 42° 30 21 14 10 15 11 10 1050m re 9.1m) 6Mn) 4.3m) 3.0n) 4.Bm) 34m) 3.0m) 48^ 29 20 14 9 14 10 10 1200mm) 8.8m) 6.1m) 4.3m) 2.7m) 4.3m).(3.0m) 3.0,e) 60' 29 20 14 9 14 10 9 1500mm) 16.8m) 6.1m) 4.3m) 2.7m) a.Nel ISOm) 2.7m) FILL HEIGHT TABLE GENERATED USING AASHTO SECTION 12. LOAD APPLICATIONS: CLASS I OR II MATERIAL COMPACTED TO 90R1 SPD AND CLASS IN COMPACTED TO 95% SPD IS REQUIRED. RESISTANCE FACTOR DESIGN (LRFD) PROCEDURE WITH THE FOLLOWING FOR TRAFFIC APPLICATIONS. MINIMUM COVER, H,IS 12-( 300mm)UP TO 48'(120(kPm) DIAMETER PIPE AND 24'(600mm) OF ASSUMPTIONS: COVER FOR OW (I500mm) DIAMETER PIPE, MEASURED FROM TOP OF PIPE TO BOTTOM OF FLEXIBLE PAVEMENT NO HYDROSTATIC PRESSURE OR TO TOP OF RIGID PAVEMENT. UNIT WEIGHT OF SOIL (VS) =120 PCF 7. FOR ADDITIONAL INFORMATION SEE TECHNICAL NOTE 2. 04. 6 Rev. MAXIMLTI GO flemsEs Rea m111m Am,mz,mG REV. DESCR1z BY MMAO/YY CHMD ADVANCEDDRAINAGESYSTEMS, INC.("A)H45PREP MTITSCETAILBASEDONINFORMA PRO"DMTOAS, THISDRAWINGIS JAB INTENDEDTODEPI TMNECOMPONEMSASREOUEUED.A S HAS NOT PERFORMED ANY ENGINEERING OR DESIGN SERNCES FCRTHIS PROJECT. NOR HAS ADS INDEPENDENTLY VERIFIED TIE INFDRWnON SUPPLIED. THE INSTALLATION DUALS PRONGED HEREIN AREQENER>L RECCMMENDATONS AND ARE NOT SPECIFIC FOR THIS PROJECT. THE DESIGN ENGINEER SHCLLRENEW THESE DETAILS PRIORTO CONSTRUCTOIL RISTHEDESIGNENGINEERSREWP VSILT'TOENS MR EDETNLSPRONDEDHMMNMMORUX EMTHE APPLIDAINE NAnIX .STAT..ORLOCALPEQUIMMEN MDTOENSURETHATTEDETAILSPRONGEDHEREINAREACCEP,-,-., 9s Reco, >. 4S TI311EMMl BLVO Y XILLIMO.OM0430!S 6Y YI vaysncewwa,_I. a DIVANS TRBNCH IN3TALWTION BBI,, N.(BPMOM) NTG OF, DRAWINGNUMBER STD-1010 L9 1 m m 01NmWIN O III N W u Z WU Wh z44 W C/) E-4 J W Ix 94 III0 O N U Ill I' mf Tal 0- V / W ( n J J J Q II- 4 W V) W Z W W o Q Q[ z G cj U W 1QLL 01 W 6[ m 0 U / z W uji V) H LLI 'I W w a N JOB NO. 192036 SCALEAS SHOWN SHEET NO. 8