The URL can be used to link to this page

Home My WebLink AboutWPO200600066 Plan - E&S Control Plan 2010-03-05OSION & SEDIMENT CONTROL .NARRATIVE: PROJECT DESCRIPTION: The construction shown hereon proposes the construction of streets and utilities in support of 161 single family dwelling units in the Briarwood development. Approximately 49.3 acres will be disturbed as a result of this construction. EXISTING SITE COI DITIONS- The site is predol inantly wooded with 3% - 37% slopes. The treelines shown represent areas composed mostly of deciduous hardwoods with trunk diameters greater thlan or equal to six inches. The majority of the drainage from this phase of development flows to the southwest toward existing flows under Route 29. There is also a large drainage divide flowing to the northeast into the Rivanno River. Existing drainage patterns have been modified as detailed on the storm wo er management plan. ADJACENT PROPERTIES: The lots in this ection of the Briarwood development abut Albemarle County Service I Authority property, and Camelot Estates to the south, vacant property which may be developed in the future to the west and existing single family residential land within Briarwood to the north. EROSION AND SEDIIMENT CONTROL MEASURES: It is the intent of this plan to limit the amount of land disturbance and to maintain the existing ground an d tree cover conditions where possible. In those areas that are to be disturbed, construction shall be sequenced so that grading operations begin and end r; quickly as possible in order to minimize the length of time that these disturbed surfaces are exposed. Unless otherwise indicated, all vegetative and structural erosion and sediment control practices shall be constructed and maintained according to the minimum standards and specifications of he Virginia Erosion and Sediment Control Handbook. Prior to commencing land disturbing activities, tree protection barriers shall be installed outside the dripline of existing specimen trees that are to be preserved. Also, sediment trapping measures, such a^ a construction entrance, silt fence, rock check dam, diversion dike and sediment traps shh�all be constructed as a first order of construction in accordance with the details shown hereon and in the locations proposed on the Phase 1 Erosion Control Plan. Note that diversioIn dikes shall be seeded and mulched immediately following theiir installation in order to prevent further sedimentation. Cut and fill slope shall be seeded immediately so to prevent erosion. Concentrated runoff will be contained within an adequately sized, appropriately lined channel and discharged into existing wetland areas. Inlet protection shall be installed on all storm sewer inlets immediately following tlheir installation. Additionally, appropriate outlet protection shall shall be installed in accordance with the detail shown on this sheet. Topsoil shall be stripped from graded areas and stockpiled for use in final grading and permanent stabilization. Silt fence shall shall be installed around the perimeter off ail stockpiles. The stockpiles shall be kept clear of all construction activity. The stockpile must be stabilized with temporary vegetation to prevent soil loss and sediment transport from the stockpile!i itself until needed. The location of the stockpiles, if any, shall be coordinated with the Erosion and Sediment Inspector. Areas shown herein as 11 nontidal wetlands and tree save areas are to be considered as sensitive or critical erosion areas and measures as shown hereon shall be taken Y..e protect those areas. IVI/'\I V/'1V1_ MLI V 1 Erosion and sediment control devices shall remain in place at all times during construti'.;:.n until final stabilization is achieved. Provisions shall be made to minimize the trans1 J2' ;cf sediment onto paved public roadways by construction vehicles and to stabilize d is : ` _:. areas as quickly as possible. The controls shall be inspected daily and particularly each rainfall event. Any necessary repairs or cleanup required to maintain effec dvera r -.s 10i the controls shall be made by the end of the day. If additional erosion control :devices are deemed necessary,1 the contractor shall be responsible for the installation. 1 LI\IVt1n1XL.IV 1 Disturbed areas are to be replaced to grass. Disturbed areas shall have permanent and/or temporary soil stabilization applied within seven (7) days after final grade is reached. ",'Peding and selection of the seed mixture shall be in accordance with the Virginia Erosion Control Handbook. Permanent vegetat'on shall not be considered established until a ground cover is achieved that is uniform and mature enough to survive and that will inhibit erosion. If it Ibecornes necessary, seeded areas shall be fertilized and reseeded to insure a good stand of ground cover. Erosion corhtrols shall be removed only at the direction of a Albemarle Coounty inspector or, at the least, within 30 days of final site stabilization. Trapped sedirment resulting from the disposition of the erosion controls shall be disposed of properIV to prevent further sedimentation. S IURMWA I ER MANAULMLN I: 1 -he requirements for storm water management (SWM) and best management practiices (BMP) have been accounted for as follows: a SWM pond provides retention and water quamlity controls as shown on the -.WM/BMP Plans. Two large BMP's are being constructed in this 1phose to address water quality for stormwater that is being discharged without quantity reduaction to the North Fork of the Rivanna River. Properties and waterways downstream from this development site shall be protected from sediment deposition, erosion and damage due to increases in volume, velocity and Ipeak flow rate of storm watellr runoff for the stated frequency storm of 24-hour duration im accordance with the 19 minimum standards and criteria. When working in live watercourses, precautions shall be taken to minimize encroachiment, control sediment transport and stabilize the work area to the greatest extent possiible during construction. A temporary vehicular stream crossing shall be provided when a live wvatercourse must be crossed more than twice in a six month period. Ali work within a live watercourse must be in accordance with all federal, state, and local regulations pertaining to such work. The bed and banks of a watercourse shall be stabilized immediately after work in tl:he watercourse is completed. MAINTENANCE: In general, all erosion & sediment controls will be checked daily and after each sigrnificant rainfall. Specific attention will be given to the following items: A) Sediment shall be removed and the trap restored to its original dimensions whem the sediment has accumulated to one half the design volume of the wet storage. Seediment removal from the basin shall be deposited in a.suitable area and in such a monrner that it will not erode and cause sedimentation problems. B) The stone outlet of a sediment trap shall be checked regularly for sediment bu0ldup which will prevent proper drainage. If the stone is clogged by sediment, the stonee shall be removed and cleaned or the stone will be replaced. 1. The erosion and sediment control inspector has the authority to add or delet(e E&SC controls as necessary in the field as site conditions change. 2. No sediment basin or sediment trap can be removed without written authorizattion. This authorization rrl ay be in the form of a signed site report. 3. Before newly constructed storm water conveyance channels or pipes are made operational, adequate outlet protection and any required temporary or permanernt channel lining shall be 'nstalled in both the conveyance channel and receiving channel. 4. All temporary erosion and sediment control measures shall be removed within -,30 days after final site stabilization or after the temporary measures are no longer needed, unless otherwise authorized by the local program authority. 5. Trapped sediment and the disturbed soil areas resulting from the disposition off temporary mea:�ures shall be permanently stabilized to prevent further erosion sand CONTROL PLAN WJM PHASES 1A-1, 1B-1, 4 AND 8 NA MAGISTERIAL DISTRICT RIVAN ALBEMARLE COUNTY, `'IRGINI9 SPD -2006-00041 VICINITY MAP SCALE: 1" =2000' OWNER /APPLICANT: WOODBRIAR ASSOCIATES P.O. BOX 5548 CHARLOTTESVILLE, VIRGINIA 22905 (434) 975-3334 CONTACT: MR. WENDELL W. WOOD SHEET INDEX DEVELOPER: WENDEL WOOD P.O. B)X 5548 CHARLOTTESVILL=, VIRGINIA 22905 (434) <75-3334 CONTACT: MR. WENDELL W. WOOD 1. COVER SHEET-E&SC PLAN HYDROLOGIC SOIL NAME 2. NOTES AND DETAILS SYMBOL 7-20-07 2A. PROJECT OVERVIEW DESIGNER: TOP 3. EROSION AND SEDIMENT CONTROL PHASE 1 4. EROSION AND SEDIMENT CONTROL PHASE 1 5. EROSION AND SEDIMENT CONTROL PHASE 1 6. EROSION AND SEDIMENT CONTROL PHASE I 6A. EROSION AND SEDIMENT CONTROL PHASE 1 7. EROSION AND SEDIMENT CONTROL PHASE II 8. EROSION AND SEDIMENT CONTROL PHASE 11 9. EROSION AND SEDIMENT CONTROL PHASE 11 10. EROSION AND SEDIMENT CONTROL PHASE 11 10A EROSION AND SEDIMENT CONTROL PHASE II 11. EROSION AND SEDIMENT COMPUTATIONS 12. EROSION AND SEDIMENT COMPUTATIONS 12A. ADEQUATE OUTFALL ANALYSIS 8 94C SOILS MAP SCALE: 1" =1000' SELECTED 8aLS DATA FROM SQG: SURVEY - ALBEMAa.E COUNTY, yR(M MAP HYDRIC HYDROLOGIC SOIL NAME SHRINK- SLOPES K FACTOR SYMBOL 7-20-07 GROUP Fes-- SWELL DESIGNER: TOP SUB 10 N A-_7�8uncombe _ loam sand Low 0%2% 14C 1`� N B B Ghs:�.ec loom Low 77-15% .10 32 .10 .43 1 ` B :;hester loam Chester loam Low Low 15%25% 25%457o .32 .43 196 19C N N C Cullen loam Moderate 2%-7% .32 .37 .43 .24 340 N C B Cullen loam Moderate 7%-15% .37 .24 I__ 36C N3 Glenela loam Hay esville loam Low Low 15%25% 77-15% 32 .43 36D 47E N B Hovesville loam Low15 -25%20 .20 .24 .24 65B N N B i.._o!:+slur sand loam Low 25%45% 24 .24 65C N B B __._1_Psc ie` _,;and loam i I✓ �� jand loam Low 2%7% .20 8 94C N B ---��',vlc Twee sandv loom Low 15%-25% ---Low 73-15% .37 32 .28 4 GENERAL CONS r<; J(_,TION NOTES FOR EROSION AND )Ey�QENT CONTROL PLANS 1. The plan approving authority must be notified one week prior to tlhe pre-construcr ic--yc. conference, one week prior to the corimiencement of land disturbing activity, and one week prior to the final inspection. 2. All erosion and sediment control measures will be constructed and mainta'rz,d according to minimum standards and specifications of the Virginia Erosion and Sediment Control Handbook and Virginia Regulations VR 625-02-00 Erosion and Sediment Control Regulations. 3. All erosion and sediment control measures are to be placed prior to or as the first step in clearing. 4. A copy of the approved erosion and sediment control plan shall be maintained on the site at all times. 5. Prior to commencing land disturbing activities in areas other than indicated on these plans (including, but not limited to, off-site borrow or waste areas)), the contractor shall submit a supplementary, erosion control plan to the owner forr review and approval by the plan approving authority. 6. The contractor is responsible for installation of anv additional erosi(on control measures necessary to prevent erosion and sedimerrtati..on as determined by tlhe plan approving authority. 7. All disturbed areas are to drain to approved sediment control measuires at all times during land disturbing activities and during site development until final stabilization is achieved. 8. During dewatering operations, water will be pumped into an approved filtering device 9. The contractor shall inspect all erosion control measures periodicallyy and after each runoff -producing rainfall event. Any necessary repairs or cleanup t(o maintain the effectiveness of the erosion control devices c.,ihall be made inimediattely. 10. All fill material to be taken from an approveal,, designated borrow, arrea. 11. Alt waste materials shall be taken to an appn:rved waste area. Earth fill shall be inert materials only, free of roots, stumps, wood, nebbish, and other debriis. 12. Borrow or waste areas are to be reclaimed within 7 days of completiion per Zoning Ordinance section 5.1.28. 13. All inert materials shall be transported in compliance with section 1:3-301 of the Code of Albemarle. 14. Borrow, fill or waste activity involving industrial -type power equipiment shall be limited to the hours of 7:00am to 9:00bm. ESC C)k ttk COrrlrlurlib, ievnl..}�+'af'r=;lt 1.4. Borrow, fill or waste activity invoh-ing industrial -type power equipment shall be limited to the hours of 7:00am to 9:00pm. 15. Borrow, fill or waste activity shall be conducted in a safe manner than maintains lateral support, or order to minimize any hazard to persons, physical damage to adjacent land and improvements, and damage to any public street because o slides, sinking, or collapse. 16. The developer shall reserve the right to install, maintain, remove or convert to pennanent storinwater management facilities where applicable all erosion control I measures required by this plan regardless of the sale of any lot, unit, building or other portion of the property. 7. Temporary stabilization shall be temporary seeding and mulching. Seeding is to be at 75 lbs/acre, and in the months of September to February to consist a 50/50 mix of Annual. Ryegrass and Cereal. Winter Rye, or in March and April to consist of Annual Rye, or May through August to consist of German Millet. Straw mulch is to be applied at 801bs/100sf Alternatives are subiect to approved by the County erosion control inspector. 8. Permanent stabilization shall be lime and fertilizer; permanent seeding and mulch. Agricultural grade limestone shall be applied at 90lbs/1000sf, incorporated into the top 4-6 inches of soil. Fertilizer shall be applied at 1000lbs/acre and consist of a 10- 20-10 nutrient mix. Permanent seeding shall be applied at 180lbs/acre and consist of 95% Kentuckv 31 or Tall Fescue and 0-5% Perennial Ryegrass or Kentucky Bluegrass. Straw, mulch is to be applied at 80lbs/100sf Alternatives are subject to approved by the County erosion control inspector. 19. Maintenance: All measures are to be inspected weekly and after each rainfall. Any damage or clogging to structural measures is to be repair immediately. Silt traps are to be cleaned when .50% of the wet storage volume is filled with sediment. All seeded areas are to be reseeded when necessary to achieve a good stand of grass. Silt fence and diversion dikes which are collecting sediment to half their height must be cleaned and repaired immediately,, All temporary erosion and sediment control measures are to be removed within 30 dans of final site stabilization, when measures are no longer needed, subject to approval by the County erosion control inspector. RLD INFORMATION Name:_ Address: Telephone Number: Professional Registration: DCR Certification Valid Through: I'M 10, y00 10 JOHN SSIK 1-+ U tic. No. 19998 %..' IONAt ®11 �° DISTURBED AREA = 49.3 AC. ENGINEERING GROUPIE PROJECT STATUS � 014-18---07 L REVISED PER COUNTY COMMENTS SCALE: N/A 7-20-07 =Z Fes-- DESIGNER: � 4-18-07 REVISED PER COUNTY COMMENTS DRAFTSMAN: DJ 10-1-06 Z w ENERAL REVISIONS SP -027F W ACTION W OF 12 (n ild Z E W 0 �oC�o o W W Z z 7- J- d O U= 0 to Z Z V D D M=) ZQ 00Lf0 w Q L.Li vc�Qca�LoQQ 0:� n� ci� o- p 0 wu.iww U z z EL n a- n carte a Ci f) C) n o (n 0 CO (n ClJV) ca Q to Q w M V) w w w w w 0 Cl 0 r� CLcr_ 0:� of Q n a o I- oo p oo O oo C co o 0)0)CQ o O I 0 I I I 1[1, +. 10 6 LJ r r, j�_ N o <C � 1 I N � i` Co n(�I�.a Z 10, y00 10 JOHN SSIK 1-+ U tic. No. 19998 %..' IONAt ®11 �° DISTURBED AREA = 49.3 AC. ENGINEERING GROUPIE PROJECT STATUS DATE: 014-18---07 L REVISED PER COUNTY COMMENTS SCALE: N/A 7-20-07 =Z DESIGNER: ,1S 4-18-07 REVISED PER COUNTY COMMENTS DRAFTSMAN: DJ 10-1-06 GENERAL REVISIONS FILE NO. ENERAL REVISIONS SP -027F W ACTION W OF 12 E -+ ( Z E co 0 W W Z L) 10, y00 10 JOHN SSIK 1-+ U tic. No. 19998 %..' IONAt ®11 �° DISTURBED AREA = 49.3 AC. ENGINEERING GROUPIE PROJECT STATUS DATE: 014-18---07 2-4-10 REVISED PER COUNTY COMMENTS SCALE: N/A 7-20-07 REVISED PER COUNTY COMMENTS DESIGNER: ,1S 4-18-07 REVISED PER COUNTY COMMENTS DRAFTSMAN: DJ 10-1-06 GENERAL REVISIONS FILE NO. ENERAL REVISIONS SP -027F DATE ACTION SHEET 1 OF 12 FENCING AND ARMORING DRIP LINE SNOW FENCE BOARD FENCE 00 CORRECT TRUNK ARMORING 00 TRIANGULAR BOARD FENCE TYPICAL TREATMEN?' - 1 (SOIL STABILIZATION BLANKET) INSTALLATION CRITERIA 2" TAMP FIRMLY ANCHOR SLOT 2"rTAMP I FIRMLY ANCHOR SLOT NOTES APPROXIMATELY200 STAPLES REQUIRED PER 100 SQ. YDS. OF MATERIAL ROLL. ANCHOR SLOTS, JUNCTION SLOTS & CHECK SLOTS TO BE BURIED 6" TO 12". 12" MAX. 4.1 OR FLATTER 6" MAX, STEEPER THAN 4:1 JUNCTION SLOT EDGE AND END JOINTS c TO BE SNUGLY ABUTTED CHECK SLOT I (JUTE MESH WILL HAVE TERMINAL FOLD STAPLED LAP JOINT IN LIEU OF EDGE JOINT) - IAP JOINT 2" MIN. (JUTE MESH ONLY) I I I I I 5' MAX. 4:1 OR FLATTER 3' MAX. STEEPER THAN 4:1 I I I I I I V TO 12" I i t I I I I _T I I I I CHECK SLOT 6" TO 12' *CHECK SLOT - •►� 71'TO 2" I I I I i I I i I 1 i t VAR. I VAR. 6" TO 8" MIN. PLAN ,HN VIEW STAPLING DIAGRAM STAPLE FORMED FROM NO.11 STEEL WIRE. *CHECK SLOTS AT MIN. 50 C -C INTERVALS: 8" STAPLE MIN. LENGTHFOR SANDY SOIL. NOT REQ -'D WITH ALL JUNCTION SLOT TAMP .. 2" �-FIRMLY 6" TO 12" 12" TERMINAL FOLD TAMP FIRMLY 2' 4" Drip Line Protective I Maximum Limits of Clearing and Grading Proposed / Iwhere dripline Is less than 5' CONSTRUCTION OPERATIONS RELATIVE TO THE LOCATION OF PROTECTED TREES RACK CHECK DAM VDDT #1 COARSE AGGREGATE \ 6'- • Ig CLASS 1 RIP -RAP ARIE SIDE VIEW FILTER CLOTH (OPTIONAL) 1 VARIES ft -4116 E. 2 2 VDDT #1 COARSE AGGREGATE FRONT VIEW ado do C PIPE OUTLET CONDITIONS A ,-.(�3 A 'E OUTLET TO WELL =1NED CHANNEL SECTI rILItR KEY IN 6"-9" RECOMMENDED CLOTH FOR ENTIRE PERIMETER NOTES: 1. APRON LINING MAY BE RIP -RAP, GROUTED RIP -RAP, GABION BASKET OR CONCRETE. 2. La IS THE LENGTH OF THE RIP -RAP APRON AS CALCULATED USING PLATES 3.18-3 AND 3.18-4. 3. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER, BUT NOT LESS THAN 6 INCHES. • • *s motwol • THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE HEAVY FLOWS ARE EXPECTED AND WHERE AN OVERFLOW CAPACITY IS NECESSARY TO PREVENT EXCESSIVE PONDING AROUND THE STRUCTURE. * GRAVEL SHALL BE VDQT #3, #357 OR #5 COURSE AGGREGATE. TEMPORARY DIVERSION DIKE COMPACTED SOIL I�II11111'ill�l'I . I�IIIII111111 'IIII11111111 18" MIN. 11IIIII111III 11 i�llllll 1111It I'llll11111'Itllltlllll 11 ,11111 IIltllllili 11 11 -►- FLOW IIIIIIIII I111111111II .II (III III III ItIIII 111 Ill,Ilt11111111 illlllill •IILI,III t.l.l 111.1.111 .1.1.1.111 .1.1Il.LI.t , ---4.5" MIN DATE: PIPE OUTLET TO FLAT 7-27-06 AREA WITH NO PLAN VIEW DEFINED CHANNEL N A La i -n -u I .... - V4 SECTION A -A = d I cd L>R D.M.P. 7-20-07 FILTER KEY IN 6"-9" RECOMMENDED CLOTH FOR ENTIRE PERIMETER -•_�. ., vly.:�.✓. z �.�.i+ _T � r 1 � ado (MIN.) 'E OUTLET TO WELL =1NED CHANNEL SECTI rILItR KEY IN 6"-9" RECOMMENDED CLOTH FOR ENTIRE PERIMETER NOTES: 1. APRON LINING MAY BE RIP -RAP, GROUTED RIP -RAP, GABION BASKET OR CONCRETE. 2. La IS THE LENGTH OF THE RIP -RAP APRON AS CALCULATED USING PLATES 3.18-3 AND 3.18-4. 3. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER, BUT NOT LESS THAN 6 INCHES. • • *s motwol • THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE HEAVY FLOWS ARE EXPECTED AND WHERE AN OVERFLOW CAPACITY IS NECESSARY TO PREVENT EXCESSIVE PONDING AROUND THE STRUCTURE. * GRAVEL SHALL BE VDQT #3, #357 OR #5 COURSE AGGREGATE. TEMPORARY DIVERSION DIKE COMPACTED SOIL I�II11111'ill�l'I . I�IIIII111111 'IIII11111111 18" MIN. 11IIIII111III 11 i�llllll 1111It I'llll11111'Itllltlllll 11 ,11111 IIltllllili 11 11 -►- FLOW IIIIIIIII I111111111II .II (III III III ItIIII 111 Ill,Ilt11111111 illlllill •IILI,III t.l.l 111.1.111 .1.1.1.111 .1.1Il.LI.t , ---4.5" MIN ANTI- VORTEX DEVICE DESIGN TACKWELD ALL AROUND PLAN VIEW �.. D -� H SPACER _ SUPPORT BAR 12 BAR A SIZE #6 REBAR (TYPICAL) MIN.) RISER DIAMETER ISOMETRIC (OMETIRIC �I TOP -X - ANGLE REQUIRED) SECTION A -A TOP AND ORIENTED PER - PERPENDICULAR TO NOTES: CORRUGATIONS. 1. THE CYLINDER MUST BE TOP /S -_ GAGE CORRUGATED FIRMLY FASTENED TO THE METAL OR 1 8" STEEL PLATE. TOP OF THE RISER. PRESSURE RELIEF HOLES MAY BE OMITTED, IF ENDS OF 2. SUPPORT BARS ARE CORRUGATIONS ARE LEFT FULLY WELDED TO THE TOP OF OPEN WHEN THE TOP IS THE RISER OR ATTACHED ATTACHED. BY STRAPS BOLTED TO CYLINDER IS - GAGE TOP OF RISER. CORRUGATED METAL PILPE OR FABRICATED FROM 1/81" STEEL 11 PLA T. RECOMMENDED DEWATERING SYSTEM FOR SEDIMENT BASINS PROVIDE ADEQUATE STRAPPING YETHYLENE CTAP * DEPTH PERFORATED POLYETHYLENE VARIES A DRAINAGE TUBING, DIAMIETER REQUIRED VARIES (,SEE CALCULATIONS FOR DR IN APPENDIX 3.14-A) STORAGE "FERNCO-STYLE" WET COUPLING STORAGE DEWATERING ORIFICE, SCHEDULE 40 STEEL STUB 1-FOOTF MINIMUM CORRUGATED METAL DIAMETER VARIES (SEE (CALCULAT16NS OR RCP RISER IN APPENDIX 3.14-A) BASED ON PROVIDED DESIGN NOTE: WITH CONCRETE RISER, USE PVC SCHEDULE 40 STUB FOR DEWATERING ORIFICE DRAINAGE TUBING SHALL COMPLY WITH ASTM1 F667 AND AASHTO M294 CONSTRUCTION OF A SILT .FENCE (WITHOUT WIRE SUPPORT) 1. SET THE STAKES 2. EXCAVATE A 4'x 44" TRENCH UPSLOPE ALONG THE LINE OF STAKES FLOW�- I I 3. STAPLE FILTER MATERIAL TO STAKES 4. BACKFILL AND COMPACT AND EXTEND IT INTO THE TRENCH THE EXCAVATED SOIL. FLC SHEET FLOW INSTALLATION (PERSPECTIVE NEW) POINTS A SHOULD BE HIGHER THAN POINT B DRAINAGE WAY INSTALLATION (FRONT ELEVATION) MINIMUM TOP WIDTH (T / REQUIRED FOR SEDIMENT TRAP EMBANKMENTS ACCORDING TO HEIGHT OF EMBANKMENT (FEErn T) H HO W 1.5 0.5 2.0 H 2.0 1.0 2.0 N HO 2.5 1.5 2.5 3.0 2.0 2.5 3.5 2.5 3.0 4.0 3.0 3.0 b 4.5 3.5 4.0 EXCAVATED AREA I • 5.0 4.0 4.5 MAX. DEPTH = 4' ORIGINAL GROUND ELEV. EROSION & SEDIMENT CONTROL NOTES: 1. ALL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE CONSTRUCTED AND MAINTAINED IN ACCORDANCE WITH THE MINIMUM STANDARDS AND SPECIFICATIONS OF THE 1992 VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND COUNTY ORDINANCES, 2. THE OWNER/DEVELOPER GRANTS THE RIGHT OF ENTRY ONTO THIS PROPERTY TO THE DESIGNATED ALBEMARLE COUNTY PERSONNEL FOR THE PURPOSE OF INSPECTING AND MONITORING FOR COMPLIANCE WITH THE CODE OF VIRGINIA, EROSION AND SEDIMENT CONTROL LAW. 3. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ONSITE AT ALL TIMES. 4. PRIOR TO DEVELOPMENT, THE LIMITS OF CLEARING SHALL BE CLEARLY MARKED WITH PROTECTIVE BARRIERS. IN PARTICULAR, BARRIERS SHALL BE INSTALLED FIVE (5) FEET OUTSIDE THE DRIPLINE OF ANY TREE OR STAND OF TREES TO BE PRESERVED. THE BARRIERS SHALL REMAIN IN PLACE THROUGH ALL PHASES OF CONSTRUCTION. THE STORAGE OF EQUIPMENT, MATERIALS, DEBRIS OR FILL SHALL NOT BE ALLOWED WITHIN THE AREA PROTECTED BY THE BARRIER. 5. CONSTRUCTION SHOULD BE SEQUENCED SO THAT GRADING OPERATIONS CAN BEGIN AND END AS QUICKLY AS POSSIBLE. ALL EROSION AND SILTATION CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN GRADING. THE FIRST AREAS TO BE CLEARED ARE TO BE THOSE REQUIRED FOR THE PERIMETER CONTROLS. 6. ALL EROSION AND SEDIMENT CONTROLS SHALL BE MAINTAINED IN GOOD WORKING CONDITION AT ALL TIMES DURING CONSTRUCTION. REMOVAL OF SAID CONTROLS SHALL BE AUTHORIZED BY A COUNTY INSPECTOR BUT, AT THE LEAST, SHALL NOT BE REMOVED UNTIL PERMANENT VEGETATIVE COVER HAS BEEN ESTABLISHED ON, ALL DENUDED AREAS. 7. ALL SILTATION AND EROSION CONTROL MEASURES ARE TO BE INSPECTED DAILY BY THE RESPONSIBLE LAND DISTURBER OR HIS AGENT- ANY DAMAGED STRUCTURES ARE TO BE REPAIRED IMMEDIATELY. NO CONTROL DEVICES SHALL BE REMOVED WITHOUT THE APPROVAL OF THE COUNTY INSPECTOR. 8. PERMANENT AND TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN (7) DAYS AFTER FINAL GRADE IS REACHED. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN (7) DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN UNDISTURBED FOR LONGER THAN 30 DAYS. 9. ALL STORM AND SANITARY SEWER LINES NOT IN STREETS ARE TO BE MULCHED AND SEEDED WITHIN 7 DAYS AFTER BACKFILL, NO MORE THAN 500 FT. OF TRENCH IS TO BE OPEN AT ANY TIME. 10. ELECTRIC POWER, TELEPHONE AND GAS SUPPLY TRENCHES ARE TO BE COMPACTED, SEEDED, AND MULCHED WITHIN 7 DAYS. 11, ALL TEMPORARY TOPSOIL STOCKPILES ARE TO BE SEEDED AND MULCHED FOR TEMPORARY VEGETATIVE COVER IMMEDIATELY AFTER GRADING. STRAW OR HAY MULCH IS REQUIRED, 12. ANY DISTURBED AREA NOT PAVED, SODDED OR BUIL-f UPON BY NOVEMBER 1ST;., OR DISTURBED AFTER THAT DATE SHALL BE TEMPORARILY SEEDED AND MULCHED IMMEDIATELY WITH HAY OR STRAW MULCH AT THE RATE OF TWO TONS PER ACRE AND OVER -SEEDED NO LATER THAN MARCH 15TH. 13. IF THE MAXIMUM PERIOD FOR DENUDATION IS EXCEEDED AND ANY AREAS REMAIN EXPOSED WITHOUT COVER OR SURFACE, THE COUNTY MAY (IN THE EVENT THE DEVELOPER DOES NOT) INSTALL SUCH GROUND COVER OR OTHER NECESSARY STABILIZING DEVICES AND/OR MATERIAL TO THE MINIMUM EXTENT NECESSARY TO ACHIEVE EROSION AND SEDIMENT COVER SHOWN ON THE APPROVED PLAITS. THE COST OF ANY SUCH TEMPORARY MEASURES TAKEN BY THE COUNTY SHALL. BE BORNE BY THE CONTRACTOR, AND SHALL BE A CHARGE AGAINST THE CONSERVATION DEPOSIT. 14. EMBANKMENT MATERIAL SHALL BE TAKEN FROM APPROVED BORROW AREA WHICH SHALL BE FREE FROM ROOTS, WOODY VEGETATION AND OVERSIZED STONES OR ROCIK. 15. THE TOPS AND SIDES OF THE EMBANKMENT SHALL BE COVERED WITH TOPSOIL AND PROPERLY SEEDED, MULCHED AND FERTILIZED. 16. THE CONTRACTOR SHALL USE THE PROPER MIX OF SEED AND FERTILIZER THAT WILL ALLOW THE SEED TO GERMINATE IN ALL SOILS PRESENTLY ON SITE. 17. KENTUCKY BLUEGRASS OR EQUIVALENT SHALL BE INSTALLED AS DITCH LINING, UNLESS OTHERWISE NOTED. 18. WET STORAGE AREAS FOR SEDIMENT TRAPS SHALL BE EXCAVATED TO A DEPTH OF FOUR FEET (4') MAX. BELOW THE BASE OF THE STONE OUTLET STRUCTURE. 19. SEDIMENT SHALL BE REMOVED FROM SEDIMENT TRAPS WHEN THE SEDIMENT HAS ACCUMULATED TO ONE-HALF THE DESIGN VOLUME OF 'THE WET STORAGE. 20. THE STONE OUTLET OF A SEDIMENT TRAP SHALL BE CI--IECKED REGULARLY FOR SEDIMENT BUILDUP WHICH WILL PREVENT PROPER DRAINAGE. IF THE STONE IS CLOGGED BY SEDIMENT, THE STONE SHALL BE REMOVED AND CLEANED OR THE STONE WILIL BE REPLACED. 21. ACCUMULATED SILT SHALL NOT BE DISPOSED OF ON THE DOWNSTREAM SIDE OF THE SEDIMENT TRAP. 22. THE SILT FENCE BARRIER WILL BE CHECKED REGULARLY FOR UNDERMINING OR DETERIORATION OF THE FABRIC. SEDIMENT SHALL BE REMOVED WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHES HALF WAY TO THE TOP OF THE BARRIER. 23. DURING DEWATERING OPERATIONS, SEDIMENT LADEN WATER MUST BE PUMPED INTO AN APPROVED FILTERING DEVICE. 24. WHEN SEDIMENT IS TRANSPORTED ONTO A PAVED ROAD SURFACE, THE ROAD WILL BE CLEANED THOROUGHLY AT THE END OF EACH DAY ACCORDING TO THE FOLLOWING PROCEDURE. SEDIMENT SHALL BE REMOVED FROM THE ROAD SURFACE BY SHOVELING OR SWEEPING AND TRANSPORTED TO A SEDIMENT CONTROL DISPOSAL AREA, STREET WASHING WILL BE ALLOWED ONLY AFTEP. SEDIMENT IS REMOVED IN THIS MANNER. 25. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN 1NJDICATED ON THESE PLANS, A SUPPLEMENTARY EROSION CONTRt)I_ PLAN SHALL BE SUBMITTED AND APPROVED BY ALBEMARLE COUNTY AT THE DISCRETION OF THE INSPECTOR. 26. ALL CLEARING LIMITS WILL BE IDENTIFIED BY FLAGGING IN THE FIELD, INCLUDING PERIMETER AND INTERIOR SAVE AREAS. 27. ORANGE SAFETY FENCE MUST BE INSTALLED AROUND ALL SILT TRAPS AND SEDIMENT BASINS. 28. GEOTECHNICAL RECOMMENDATIONS ARE TO BE FOLLEWED FOR THE PHASE I EROSION AND SEDIMENT CONTROL PLANS. 29. A PRE -CONSTRUCTION MEETING IS TO BE USEL) PRIOR TO COMMENCEMENT OF CONSTRUCTION. 30. THE STORM WATER MANAGEMENT PONDS THAT ARE USED AS TEMPORARY SEDIMENT BASINS ARE TO BE DREDGED OF ALL. SILT AND DEBRIS PRIOR TO ITS USE AS A STORM WATER MANAGEMENT POND. DREDGED MATERIAL FROM THE POND IS TO BE DISPOSED OF IN SUITABLE: LOCATIONS. 31, ADDITIONAL EROSION AND SEDIMENT CONTROL MEASURES MAY BE NECESSARY TO BE INSTALLED UPON THE DISCEI,ETION OF THE EROSIION CONTROL INSPECTORS DURING CONSTRUCTION. 32. ALL EROSION AND SEDIMENT CONTROL MEASURE: ON PHASE] SHALL. REMAIN THROUGH THE DURATION OF PHASE 11 CONSTRUCTION. SEDIMENT CONTROLLING DEVICES MAY BE MODIFIED WITH A LESSER CAPACITY AS GRADING PROGRESSES WITH THE EROSION CONTROL INSPECTORS APPROVAL. 33. ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL ONLY BE (REMOVED WITH WRITTEN APPROVAL FROM EROSION CONTE�'OL INSPECTORS. CONSTRUCTION SEQUENCING PHASE 1 1. A PRE -CONSTRUCTION MEETING WILL BE SCHEDULED WITH THE DEVELOPER AND ALBEMARLE COUNTY PRIOR TO THE START OF CONSTRUCTION. 2. INSTALL THE WASH RACK AND THE TEMPORARY GRAVEL CONSTRUCTION ENTRANCE AS SHOWN ON THE PLAN. MUD AND DEBRIS SHALL BE WASHED FROM ALL CONSTRUCTION VEHICLES AND EQUIPMENT BEFORE LEAVING THE SITE. THE SEDIMENT -LADEN WATER WILL BE DIVERTED TO A NEARBY HOLDING AREA. WATER TANK TRUCKS WILL BE USED IF PUBLIC WATER IS NOT AVAILABLE. 3. BEGIN CLEARING AND GRUBBING ONLY TO INSTALL ALL PERIMETER SEDIMENT CONTROLS; TREE PROTECTION, SILT FENCES, INLET/OUTLET PROTECTION; SEDIMENT BASINS AS DESCRIBED BELOW AND AS SHOWN ON PLANS. 4. INSTALL THE SEDIMENT BASINS 1-6 AS SHOWN ON THE PHASE I PLANS. 5. GEOTECHNICAL ENGINEER SHALL BE PRESENT AT ALL TIMES DURING THE CONSTRUCTION OF DAM AND GRADING OF SLOPES AND WRITTEN CERTIFICATION SHALL BE PROVIDED THAT ALL WORK WAS PERFORMED TO THEIR SPECIFICATIONS. 6. APPLY TEMPORARY SEEDING AND MULCHING TO ALL EARTHENED PERIMETER CONTROLS IMMEDIATELY FOLLOWING GRADING. 7. BEGIN ROUGH GRADING. 8. REVEGETATE AREAS BROUGHT TO GRADE OR THAT STAND IDLE FOR MORE THAN SEVEN (7) DAYS. PHASE 2 1. ALL PERIMETER CONTROLS ON PHASE I WILL STAY IN PLACE FOR THE DURATION OF PHASE 11. 2. RELOCATE AND/OR INSTALL ALL UTILITIES AS REQUIRED. 3. FINISH ROUGH GRADING. 4. INSTALL BASECOAT PAVEMENT. 5. RE -INSTALL PERIMETER EROSION CONTROL DEVICES AND INLET PROTECTION AS NECESSARY PRIOR TO FINAL GRADING. 6. CONVERT SB -3 TO TEMPORARY SWM POND (FRONT OF SITE); 313-5 TO POND #3 (REAR OF SITE); SB -6 TO POND #4 (REAR OF SITE) 7. STABILIZE THE REMAINDER OF THE DISTURBED AREA WITH PERMANENT SEEDING. 8. WHEN SITE IS ESTABLISHED, REMOVE ALL STRUCTURAL PRACTICES AND APPLY PERMANENT SEEDING TO ALL DISTURBED AREAS UPON THE APPROVAL OF THE ALBEMARLE COUNTY INSPECTOR. STRUCTURAL PRACTICES TEMPORARY GRAVEL CONSTRUCTION ENTRANCE: 3.02 - A GRAVEL PAD LOCATED AT POINT OF VEHICULAR INGRESS AND EGRESS ON A CONSTRUCTION SITE, TO REDUCE THE MUD TRANSPORTED ONTO PUBLIC ROADS AND OTHER PAVED AREAS, SILT FENCE: 3.05 - A TEMPORARY SEDIMENT BARRIER CONSTRUCTED OF POST, FILTER FABRIC AND IN SOME CASES, A WIRE SUPPORT FENCE, PLACED ACROSS OR AT THE TOE OF A SLOPE OR IN A MINOR DRAINAGEWAY TO INTERCEPT AND DETAIN SEDIMENT AND DECREASE FLOW VELOCITIES FROM DRAINAGE AREAS OF LIMITED SIZE; APPLICABLE WHERE SHEET AND FILL EROSION OR SMALL CONCENTRATED FLOWS MAY BE A PROBLEM. MAXIMUM EFFECTIVE LIFE IS 6 MONTHS. STORM DRAIN INLET PROTECTION: 3.07 - THE INSTALLATION OF SEDIMENT TRAPPING MEASURES AROUND CURB OR DROP INLET STRUCTURES PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA; LIMITED TO DRAINAGE AREAS NOT EXCEEDING ONE ACRE AND NOT INTENDED TO CONTROL LARGE, CONCENTRATED STORMWATER FLOWS. TEMPORARY DIVERSION DIKE: 3.09 - A TEMPORARY RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPPING DISTURBED AREA TO DIVERT SEDIMENT LADEN RUNOFF FROM A DISTURBED AREA TO A SEDIMENT TRAPPING FACILITY SUCH AS A SEDIMENT TRAP OR BASIN. OUTLET PROTECTION: 3.18 - STRUCTURALLY LINED APRONS OR OTHER ACCEPTABLE ENERGY DISSIPATING DEVICES PLACED AT THE OUTLETS OF PIPES OR PAVED CHANNEL SECTIONS TO PREVENT SCOUR AT STORMWATER OUTLETS TO PROTECT THE OUTLET STRUCTURE AND TO MINIMIZE THE POTENTIAL FOR DOWNSTREAM EROSION BY REDUCING THE VELOCITY AND ENERGY OF CONSTRUCTED STORMWATER FLOWS. ROCK CHECK DAMS: 3.20 - SMALL TEMPORARY STONE DAMS CONSTRUCTED ACROSS A SWALE OR DRAINAGE DITCH TO REDUCE THE VELOCITY OF CONCENTRATED STORMWATER FLOW, THEREBY REDUCING EROSION OF THE SWALE OR DITCH. VEGETATIVE PRACTICES TEMPORARY SEEDING: 3.31 - ESTABLISHMENT OF TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY SEEDING AND MULCHING WITH FAST GERMINATING TEMPORARY VEGETATION. PERMANENT SEEDING: 3.32 - ESTABLISHMENT OF PERENNIAL VEGETATIVE COVER BY PLANTING SEED ON ROUGH GRADED AREAS THAT WILL BE BROUGHT TO FINAL GRADE FOR A YEAR OR MORE OR WHERE PERMANENT, LONGLIVED VEGETATIVE COVER IS NEEDED ON A FINE GRADED AREA. CERTIFIED SEED WILL BE USED FOR ALL PERMANENT SEEDING. THE SEED MUST MEET PUBLISHED STATE STANDARDS AND BEAR AN OFFICIAL "CERTIFIED SEED" LABEL. LEGUME SEED SHOULD BE APPROPRIATELY INOCULATED TO THE SPECIES. SEED OF LESPEDEZAS, THE CLOVERS AND CROWNVETCH SHOULD BE SCARIFIED TO PROMOTE UNIFORM GERMINATION. APPLY SEED UNIFORMLY WITH A BROADCAST SEEDER, DRILL, CULTI-PACKER SEEDER, OR HYDROSEEDER ON A FIRM, FRIABLE SEEDBED. SEEDING DEPTH SHOULD BE 1/4 TO 1/2 INCH. SODDING: 3.33 - STABILIZING FINE GRADED AREAS BY ESTABLISHING PERMANENT GRASS STANDS WITH SOD. PROVIDES IMMEDIATE PROTECTION AGAINST EROSION AND IS ESPECIALLY EFFECTIVE IN GRASSED SWALES AND WATERWAYS OR IN AREAS WHERE IMMEDIATE AESTHETIC EFFECT IS DESIRABLE. MULCHING: 3.35 - APPLICATION P I C ON OF PLANT RESIDUES OR OTHER SUITABLE MATERIALS TO DISTURBED SURFACES TO PREVENT EROSION AND REDUCE OVERLAND FLOW VELOCITIES. FOSTER PLANT GROWTH BY INCREASING AVAILABLE MOISTURE AND PROVIDING INSULATION AGAINST EXTREME HEAT OR COLD. APPLICABLE TO ALL SEEDING OPERATIONS, OTHER PLANT MATERIALS WHICH DO NOT PROVIDE ADEQUATE SOIL PROTECTION BY THEMSELVES, AND BARE AREAS WHICH CANNOT BE SEEDED DUE TO THE SEASON BUT WHICH STILL NEED SOIL PROTECTION. DATE: 04/18/07 7-27-06 GENERAL REVISIONS SCALE: N A 10-1-06 i -n -u I .... - V4 4-18-07 COUNTY COMMENTS I cd L>R D.M.P. 7-20-07 t A=4 Cn t 4 11:..'. -Y-. L -•_�. ., vly.:�.✓. z �.�.i+ CJS � 6-34 1 � 2 OF 12 ill N C Cq Q) U, � Q t U o 0 O 00 In • >w w a a • . . E- I z pm 0 r C • • O `!7•r >�� ilii � ,': r r ANTI- VORTEX DEVICE DESIGN TACKWELD ALL AROUND PLAN VIEW �.. D -� H SPACER _ SUPPORT BAR 12 BAR A SIZE #6 REBAR (TYPICAL) MIN.) RISER DIAMETER ISOMETRIC (OMETIRIC �I TOP -X - ANGLE REQUIRED) SECTION A -A TOP AND ORIENTED PER - PERPENDICULAR TO NOTES: CORRUGATIONS. 1. THE CYLINDER MUST BE TOP /S -_ GAGE CORRUGATED FIRMLY FASTENED TO THE METAL OR 1 8" STEEL PLATE. TOP OF THE RISER. PRESSURE RELIEF HOLES MAY BE OMITTED, IF ENDS OF 2. SUPPORT BARS ARE CORRUGATIONS ARE LEFT FULLY WELDED TO THE TOP OF OPEN WHEN THE TOP IS THE RISER OR ATTACHED ATTACHED. BY STRAPS BOLTED TO CYLINDER IS - GAGE TOP OF RISER. CORRUGATED METAL PILPE OR FABRICATED FROM 1/81" STEEL 11 PLA T. RECOMMENDED DEWATERING SYSTEM FOR SEDIMENT BASINS PROVIDE ADEQUATE STRAPPING YETHYLENE CTAP * DEPTH PERFORATED POLYETHYLENE VARIES A DRAINAGE TUBING, DIAMIETER REQUIRED VARIES (,SEE CALCULATIONS FOR DR IN APPENDIX 3.14-A) STORAGE "FERNCO-STYLE" WET COUPLING STORAGE DEWATERING ORIFICE, SCHEDULE 40 STEEL STUB 1-FOOTF MINIMUM CORRUGATED METAL DIAMETER VARIES (SEE (CALCULAT16NS OR RCP RISER IN APPENDIX 3.14-A) BASED ON PROVIDED DESIGN NOTE: WITH CONCRETE RISER, USE PVC SCHEDULE 40 STUB FOR DEWATERING ORIFICE DRAINAGE TUBING SHALL COMPLY WITH ASTM1 F667 AND AASHTO M294 CONSTRUCTION OF A SILT .FENCE (WITHOUT WIRE SUPPORT) 1. SET THE STAKES 2. EXCAVATE A 4'x 44" TRENCH UPSLOPE ALONG THE LINE OF STAKES FLOW�- I I 3. STAPLE FILTER MATERIAL TO STAKES 4. BACKFILL AND COMPACT AND EXTEND IT INTO THE TRENCH THE EXCAVATED SOIL. FLC SHEET FLOW INSTALLATION (PERSPECTIVE NEW) POINTS A SHOULD BE HIGHER THAN POINT B DRAINAGE WAY INSTALLATION (FRONT ELEVATION) MINIMUM TOP WIDTH (T / REQUIRED FOR SEDIMENT TRAP EMBANKMENTS ACCORDING TO HEIGHT OF EMBANKMENT (FEErn T) H HO W 1.5 0.5 2.0 H 2.0 1.0 2.0 N HO 2.5 1.5 2.5 3.0 2.0 2.5 3.5 2.5 3.0 4.0 3.0 3.0 b 4.5 3.5 4.0 EXCAVATED AREA I • 5.0 4.0 4.5 MAX. DEPTH = 4' ORIGINAL GROUND ELEV. EROSION & SEDIMENT CONTROL NOTES: 1. ALL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE CONSTRUCTED AND MAINTAINED IN ACCORDANCE WITH THE MINIMUM STANDARDS AND SPECIFICATIONS OF THE 1992 VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND COUNTY ORDINANCES, 2. THE OWNER/DEVELOPER GRANTS THE RIGHT OF ENTRY ONTO THIS PROPERTY TO THE DESIGNATED ALBEMARLE COUNTY PERSONNEL FOR THE PURPOSE OF INSPECTING AND MONITORING FOR COMPLIANCE WITH THE CODE OF VIRGINIA, EROSION AND SEDIMENT CONTROL LAW. 3. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ONSITE AT ALL TIMES. 4. PRIOR TO DEVELOPMENT, THE LIMITS OF CLEARING SHALL BE CLEARLY MARKED WITH PROTECTIVE BARRIERS. IN PARTICULAR, BARRIERS SHALL BE INSTALLED FIVE (5) FEET OUTSIDE THE DRIPLINE OF ANY TREE OR STAND OF TREES TO BE PRESERVED. THE BARRIERS SHALL REMAIN IN PLACE THROUGH ALL PHASES OF CONSTRUCTION. THE STORAGE OF EQUIPMENT, MATERIALS, DEBRIS OR FILL SHALL NOT BE ALLOWED WITHIN THE AREA PROTECTED BY THE BARRIER. 5. CONSTRUCTION SHOULD BE SEQUENCED SO THAT GRADING OPERATIONS CAN BEGIN AND END AS QUICKLY AS POSSIBLE. ALL EROSION AND SILTATION CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN GRADING. THE FIRST AREAS TO BE CLEARED ARE TO BE THOSE REQUIRED FOR THE PERIMETER CONTROLS. 6. ALL EROSION AND SEDIMENT CONTROLS SHALL BE MAINTAINED IN GOOD WORKING CONDITION AT ALL TIMES DURING CONSTRUCTION. REMOVAL OF SAID CONTROLS SHALL BE AUTHORIZED BY A COUNTY INSPECTOR BUT, AT THE LEAST, SHALL NOT BE REMOVED UNTIL PERMANENT VEGETATIVE COVER HAS BEEN ESTABLISHED ON, ALL DENUDED AREAS. 7. ALL SILTATION AND EROSION CONTROL MEASURES ARE TO BE INSPECTED DAILY BY THE RESPONSIBLE LAND DISTURBER OR HIS AGENT- ANY DAMAGED STRUCTURES ARE TO BE REPAIRED IMMEDIATELY. NO CONTROL DEVICES SHALL BE REMOVED WITHOUT THE APPROVAL OF THE COUNTY INSPECTOR. 8. PERMANENT AND TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN (7) DAYS AFTER FINAL GRADE IS REACHED. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN (7) DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN UNDISTURBED FOR LONGER THAN 30 DAYS. 9. ALL STORM AND SANITARY SEWER LINES NOT IN STREETS ARE TO BE MULCHED AND SEEDED WITHIN 7 DAYS AFTER BACKFILL, NO MORE THAN 500 FT. OF TRENCH IS TO BE OPEN AT ANY TIME. 10. ELECTRIC POWER, TELEPHONE AND GAS SUPPLY TRENCHES ARE TO BE COMPACTED, SEEDED, AND MULCHED WITHIN 7 DAYS. 11, ALL TEMPORARY TOPSOIL STOCKPILES ARE TO BE SEEDED AND MULCHED FOR TEMPORARY VEGETATIVE COVER IMMEDIATELY AFTER GRADING. STRAW OR HAY MULCH IS REQUIRED, 12. ANY DISTURBED AREA NOT PAVED, SODDED OR BUIL-f UPON BY NOVEMBER 1ST;., OR DISTURBED AFTER THAT DATE SHALL BE TEMPORARILY SEEDED AND MULCHED IMMEDIATELY WITH HAY OR STRAW MULCH AT THE RATE OF TWO TONS PER ACRE AND OVER -SEEDED NO LATER THAN MARCH 15TH. 13. IF THE MAXIMUM PERIOD FOR DENUDATION IS EXCEEDED AND ANY AREAS REMAIN EXPOSED WITHOUT COVER OR SURFACE, THE COUNTY MAY (IN THE EVENT THE DEVELOPER DOES NOT) INSTALL SUCH GROUND COVER OR OTHER NECESSARY STABILIZING DEVICES AND/OR MATERIAL TO THE MINIMUM EXTENT NECESSARY TO ACHIEVE EROSION AND SEDIMENT COVER SHOWN ON THE APPROVED PLAITS. THE COST OF ANY SUCH TEMPORARY MEASURES TAKEN BY THE COUNTY SHALL. BE BORNE BY THE CONTRACTOR, AND SHALL BE A CHARGE AGAINST THE CONSERVATION DEPOSIT. 14. EMBANKMENT MATERIAL SHALL BE TAKEN FROM APPROVED BORROW AREA WHICH SHALL BE FREE FROM ROOTS, WOODY VEGETATION AND OVERSIZED STONES OR ROCIK. 15. THE TOPS AND SIDES OF THE EMBANKMENT SHALL BE COVERED WITH TOPSOIL AND PROPERLY SEEDED, MULCHED AND FERTILIZED. 16. THE CONTRACTOR SHALL USE THE PROPER MIX OF SEED AND FERTILIZER THAT WILL ALLOW THE SEED TO GERMINATE IN ALL SOILS PRESENTLY ON SITE. 17. KENTUCKY BLUEGRASS OR EQUIVALENT SHALL BE INSTALLED AS DITCH LINING, UNLESS OTHERWISE NOTED. 18. WET STORAGE AREAS FOR SEDIMENT TRAPS SHALL BE EXCAVATED TO A DEPTH OF FOUR FEET (4') MAX. BELOW THE BASE OF THE STONE OUTLET STRUCTURE. 19. SEDIMENT SHALL BE REMOVED FROM SEDIMENT TRAPS WHEN THE SEDIMENT HAS ACCUMULATED TO ONE-HALF THE DESIGN VOLUME OF 'THE WET STORAGE. 20. THE STONE OUTLET OF A SEDIMENT TRAP SHALL BE CI--IECKED REGULARLY FOR SEDIMENT BUILDUP WHICH WILL PREVENT PROPER DRAINAGE. IF THE STONE IS CLOGGED BY SEDIMENT, THE STONE SHALL BE REMOVED AND CLEANED OR THE STONE WILIL BE REPLACED. 21. ACCUMULATED SILT SHALL NOT BE DISPOSED OF ON THE DOWNSTREAM SIDE OF THE SEDIMENT TRAP. 22. THE SILT FENCE BARRIER WILL BE CHECKED REGULARLY FOR UNDERMINING OR DETERIORATION OF THE FABRIC. SEDIMENT SHALL BE REMOVED WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHES HALF WAY TO THE TOP OF THE BARRIER. 23. DURING DEWATERING OPERATIONS, SEDIMENT LADEN WATER MUST BE PUMPED INTO AN APPROVED FILTERING DEVICE. 24. WHEN SEDIMENT IS TRANSPORTED ONTO A PAVED ROAD SURFACE, THE ROAD WILL BE CLEANED THOROUGHLY AT THE END OF EACH DAY ACCORDING TO THE FOLLOWING PROCEDURE. SEDIMENT SHALL BE REMOVED FROM THE ROAD SURFACE BY SHOVELING OR SWEEPING AND TRANSPORTED TO A SEDIMENT CONTROL DISPOSAL AREA, STREET WASHING WILL BE ALLOWED ONLY AFTEP. SEDIMENT IS REMOVED IN THIS MANNER. 25. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN 1NJDICATED ON THESE PLANS, A SUPPLEMENTARY EROSION CONTRt)I_ PLAN SHALL BE SUBMITTED AND APPROVED BY ALBEMARLE COUNTY AT THE DISCRETION OF THE INSPECTOR. 26. ALL CLEARING LIMITS WILL BE IDENTIFIED BY FLAGGING IN THE FIELD, INCLUDING PERIMETER AND INTERIOR SAVE AREAS. 27. ORANGE SAFETY FENCE MUST BE INSTALLED AROUND ALL SILT TRAPS AND SEDIMENT BASINS. 28. GEOTECHNICAL RECOMMENDATIONS ARE TO BE FOLLEWED FOR THE PHASE I EROSION AND SEDIMENT CONTROL PLANS. 29. A PRE -CONSTRUCTION MEETING IS TO BE USEL) PRIOR TO COMMENCEMENT OF CONSTRUCTION. 30. THE STORM WATER MANAGEMENT PONDS THAT ARE USED AS TEMPORARY SEDIMENT BASINS ARE TO BE DREDGED OF ALL. SILT AND DEBRIS PRIOR TO ITS USE AS A STORM WATER MANAGEMENT POND. DREDGED MATERIAL FROM THE POND IS TO BE DISPOSED OF IN SUITABLE: LOCATIONS. 31, ADDITIONAL EROSION AND SEDIMENT CONTROL MEASURES MAY BE NECESSARY TO BE INSTALLED UPON THE DISCEI,ETION OF THE EROSIION CONTROL INSPECTORS DURING CONSTRUCTION. 32. ALL EROSION AND SEDIMENT CONTROL MEASURE: ON PHASE] SHALL. REMAIN THROUGH THE DURATION OF PHASE 11 CONSTRUCTION. SEDIMENT CONTROLLING DEVICES MAY BE MODIFIED WITH A LESSER CAPACITY AS GRADING PROGRESSES WITH THE EROSION CONTROL INSPECTORS APPROVAL. 33. ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL ONLY BE (REMOVED WITH WRITTEN APPROVAL FROM EROSION CONTE�'OL INSPECTORS. CONSTRUCTION SEQUENCING PHASE 1 1. A PRE -CONSTRUCTION MEETING WILL BE SCHEDULED WITH THE DEVELOPER AND ALBEMARLE COUNTY PRIOR TO THE START OF CONSTRUCTION. 2. INSTALL THE WASH RACK AND THE TEMPORARY GRAVEL CONSTRUCTION ENTRANCE AS SHOWN ON THE PLAN. MUD AND DEBRIS SHALL BE WASHED FROM ALL CONSTRUCTION VEHICLES AND EQUIPMENT BEFORE LEAVING THE SITE. THE SEDIMENT -LADEN WATER WILL BE DIVERTED TO A NEARBY HOLDING AREA. WATER TANK TRUCKS WILL BE USED IF PUBLIC WATER IS NOT AVAILABLE. 3. BEGIN CLEARING AND GRUBBING ONLY TO INSTALL ALL PERIMETER SEDIMENT CONTROLS; TREE PROTECTION, SILT FENCES, INLET/OUTLET PROTECTION; SEDIMENT BASINS AS DESCRIBED BELOW AND AS SHOWN ON PLANS. 4. INSTALL THE SEDIMENT BASINS 1-6 AS SHOWN ON THE PHASE I PLANS. 5. GEOTECHNICAL ENGINEER SHALL BE PRESENT AT ALL TIMES DURING THE CONSTRUCTION OF DAM AND GRADING OF SLOPES AND WRITTEN CERTIFICATION SHALL BE PROVIDED THAT ALL WORK WAS PERFORMED TO THEIR SPECIFICATIONS. 6. APPLY TEMPORARY SEEDING AND MULCHING TO ALL EARTHENED PERIMETER CONTROLS IMMEDIATELY FOLLOWING GRADING. 7. BEGIN ROUGH GRADING. 8. REVEGETATE AREAS BROUGHT TO GRADE OR THAT STAND IDLE FOR MORE THAN SEVEN (7) DAYS. PHASE 2 1. ALL PERIMETER CONTROLS ON PHASE I WILL STAY IN PLACE FOR THE DURATION OF PHASE 11. 2. RELOCATE AND/OR INSTALL ALL UTILITIES AS REQUIRED. 3. FINISH ROUGH GRADING. 4. INSTALL BASECOAT PAVEMENT. 5. RE -INSTALL PERIMETER EROSION CONTROL DEVICES AND INLET PROTECTION AS NECESSARY PRIOR TO FINAL GRADING. 6. CONVERT SB -3 TO TEMPORARY SWM POND (FRONT OF SITE); 313-5 TO POND #3 (REAR OF SITE); SB -6 TO POND #4 (REAR OF SITE) 7. STABILIZE THE REMAINDER OF THE DISTURBED AREA WITH PERMANENT SEEDING. 8. WHEN SITE IS ESTABLISHED, REMOVE ALL STRUCTURAL PRACTICES AND APPLY PERMANENT SEEDING TO ALL DISTURBED AREAS UPON THE APPROVAL OF THE ALBEMARLE COUNTY INSPECTOR. STRUCTURAL PRACTICES TEMPORARY GRAVEL CONSTRUCTION ENTRANCE: 3.02 - A GRAVEL PAD LOCATED AT POINT OF VEHICULAR INGRESS AND EGRESS ON A CONSTRUCTION SITE, TO REDUCE THE MUD TRANSPORTED ONTO PUBLIC ROADS AND OTHER PAVED AREAS, SILT FENCE: 3.05 - A TEMPORARY SEDIMENT BARRIER CONSTRUCTED OF POST, FILTER FABRIC AND IN SOME CASES, A WIRE SUPPORT FENCE, PLACED ACROSS OR AT THE TOE OF A SLOPE OR IN A MINOR DRAINAGEWAY TO INTERCEPT AND DETAIN SEDIMENT AND DECREASE FLOW VELOCITIES FROM DRAINAGE AREAS OF LIMITED SIZE; APPLICABLE WHERE SHEET AND FILL EROSION OR SMALL CONCENTRATED FLOWS MAY BE A PROBLEM. MAXIMUM EFFECTIVE LIFE IS 6 MONTHS. STORM DRAIN INLET PROTECTION: 3.07 - THE INSTALLATION OF SEDIMENT TRAPPING MEASURES AROUND CURB OR DROP INLET STRUCTURES PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA; LIMITED TO DRAINAGE AREAS NOT EXCEEDING ONE ACRE AND NOT INTENDED TO CONTROL LARGE, CONCENTRATED STORMWATER FLOWS. TEMPORARY DIVERSION DIKE: 3.09 - A TEMPORARY RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPPING DISTURBED AREA TO DIVERT SEDIMENT LADEN RUNOFF FROM A DISTURBED AREA TO A SEDIMENT TRAPPING FACILITY SUCH AS A SEDIMENT TRAP OR BASIN. OUTLET PROTECTION: 3.18 - STRUCTURALLY LINED APRONS OR OTHER ACCEPTABLE ENERGY DISSIPATING DEVICES PLACED AT THE OUTLETS OF PIPES OR PAVED CHANNEL SECTIONS TO PREVENT SCOUR AT STORMWATER OUTLETS TO PROTECT THE OUTLET STRUCTURE AND TO MINIMIZE THE POTENTIAL FOR DOWNSTREAM EROSION BY REDUCING THE VELOCITY AND ENERGY OF CONSTRUCTED STORMWATER FLOWS. ROCK CHECK DAMS: 3.20 - SMALL TEMPORARY STONE DAMS CONSTRUCTED ACROSS A SWALE OR DRAINAGE DITCH TO REDUCE THE VELOCITY OF CONCENTRATED STORMWATER FLOW, THEREBY REDUCING EROSION OF THE SWALE OR DITCH. VEGETATIVE PRACTICES TEMPORARY SEEDING: 3.31 - ESTABLISHMENT OF TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY SEEDING AND MULCHING WITH FAST GERMINATING TEMPORARY VEGETATION. PERMANENT SEEDING: 3.32 - ESTABLISHMENT OF PERENNIAL VEGETATIVE COVER BY PLANTING SEED ON ROUGH GRADED AREAS THAT WILL BE BROUGHT TO FINAL GRADE FOR A YEAR OR MORE OR WHERE PERMANENT, LONGLIVED VEGETATIVE COVER IS NEEDED ON A FINE GRADED AREA. CERTIFIED SEED WILL BE USED FOR ALL PERMANENT SEEDING. THE SEED MUST MEET PUBLISHED STATE STANDARDS AND BEAR AN OFFICIAL "CERTIFIED SEED" LABEL. LEGUME SEED SHOULD BE APPROPRIATELY INOCULATED TO THE SPECIES. SEED OF LESPEDEZAS, THE CLOVERS AND CROWNVETCH SHOULD BE SCARIFIED TO PROMOTE UNIFORM GERMINATION. APPLY SEED UNIFORMLY WITH A BROADCAST SEEDER, DRILL, CULTI-PACKER SEEDER, OR HYDROSEEDER ON A FIRM, FRIABLE SEEDBED. SEEDING DEPTH SHOULD BE 1/4 TO 1/2 INCH. SODDING: 3.33 - STABILIZING FINE GRADED AREAS BY ESTABLISHING PERMANENT GRASS STANDS WITH SOD. PROVIDES IMMEDIATE PROTECTION AGAINST EROSION AND IS ESPECIALLY EFFECTIVE IN GRASSED SWALES AND WATERWAYS OR IN AREAS WHERE IMMEDIATE AESTHETIC EFFECT IS DESIRABLE. MULCHING: 3.35 - APPLICATION P I C ON OF PLANT RESIDUES OR OTHER SUITABLE MATERIALS TO DISTURBED SURFACES TO PREVENT EROSION AND REDUCE OVERLAND FLOW VELOCITIES. FOSTER PLANT GROWTH BY INCREASING AVAILABLE MOISTURE AND PROVIDING INSULATION AGAINST EXTREME HEAT OR COLD. APPLICABLE TO ALL SEEDING OPERATIONS, OTHER PLANT MATERIALS WHICH DO NOT PROVIDE ADEQUATE SOIL PROTECTION BY THEMSELVES, AND BARE AREAS WHICH CANNOT BE SEEDED DUE TO THE SEASON BUT WHICH STILL NEED SOIL PROTECTION. C/O DATE: 04/18/07 7-27-06 GENERAL REVISIONS SCALE: N A 10-1-06 • V4 4-18-07 COUNTY COMMENTS I cd L>R D.M.P. 7-20-07 t A=4 Cn t 4 aj O z FILE NO CJS � 6-34 1 � 2 OF 12 U N C Cq Q) U, � Q t U o 0 O 00 In >w C/O DATE: 04/18/07 7-27-06 GENERAL REVISIONS SCALE: N A 10-1-06 GENERAL REVISIONS 4-18-07 COUNTY COMMENTS DESIGNER: L>R D.M.P. 7-20-07 COUNTY COMMENTS DRAFTSMAN: L.R./D.M.P. z FILE NO SP --027F � 1 � 2 OF 12 U w w E- I z Q 0 C QLi O U U (n U Q �- z vT o 0 0 LIJ 0-1 W w c; 4--I � Q o o z U z w o>- a >- I- Olt U U F�-II fl O o wLU W o U 0 0 vI v} ¢ = v7 Li il LJ Cr- a-W L� U Ld L p Q 0� Q Q Q Q [� Q o r- 0 CO 0 of 0 0 0 0 0LLJ p I I I re co M Co I- N�) I I N I O I Q Q r- I N I I O 0 0 T LLL0 z C/O DATE: 04/18/07 7-27-06 GENERAL REVISIONS SCALE: N A 10-1-06 GENERAL REVISIONS 4-18-07 COUNTY COMMENTS DESIGNER: L>R D.M.P. 7-20-07 COUNTY COMMENTS DRAFTSMAN: L.R./D.M.P. l FILE NO SP --027F � 1 � 2 OF 12 z E- I Q 0 C ✓� L� U z Z W w 4--I � W 'r Olt F�-II fl W q, ;z o"Oo0 r 1 r JOHN S. M SIK r-+ Lic. No. 19998 ` 0000 a S �0® 0% 10NAL ENGINEERING GROUPE PROJECT STATUS DATE: 04/18/07 7-27-06 GENERAL REVISIONS SCALE: N A 10-1-06 GENERAL REVISIONS 4-18-07 COUNTY COMMENTS DESIGNER: L>R D.M.P. 7-20-07 COUNTY COMMENTS DRAFTSMAN: L.R./D.M.P. FILE NO SP --027F DATE ACTION SHEET 2 OF 12 G;\PROJECT\8riarwood\ENG\DWG�00-K4601,dwg, 1/8/2010 11:38:34 AM . - - - - - - -- - - - - \ / / ' / ' / ' »^ ` / / ' / \ ' \ 6L E41 /N, -------`_ `-`. .'~- � ' / \ ``-- _--- -' -'-1-' \ ---------- _. `~--` �. / � | ' `` / �~"yu /``` `-` ----- ----- ------- y / (� (� _ Z }fcK J b / / .'' / ' / / / ' / / ' ' �� '-' ^' / ' / / [ \ /' /' '''/ ~'' /' / / / . ' / CJ �-��S8-1 �� / ` ' Nu / | | / / '' ' � | � ` `--- - \ ` `-`` hr \ --`` ---- /- ~ AC. / ` -'- . -�� ~� / ' / / `` . ` \ ` ` \ `, ' 42 / ~�� / ,�� v��»-»/ / ,/' \ � / \\ \\ ``\ \,, \ �,__---------- --�//TRA�M\F�J�K-[.-------------------------- � ' / ' ' / ' / ' / / ' ~ ' \ lu REFER TO �� NARRATIVE AND VIRGINIA ��T�T� ��70�/(lN �� - - ' ' ' -- ' �- -�� STATE � � . _ __. `~`~.~. , �� 0k��NT /`/lNT�/l/ A�N��0[l�� k�/l�� jN��k��Tl(l� -' ----''''—'' --'''''-- '''''`~~--'' FOR .,~.^^_ INFORMATION. ADDITIONAL SILT FENCE SHALL BE INSTALLED AROUND INDIVIDUAL BUILDING «�|T�«| �lN/`� DD�� A|U SLOPES A�V� ��.�� .��...� �.�� ..�� ..., ...�� ..^��. ��.^ ."`,�� BEEN STABILIZED AS REQUIRED. GRAPHIC SCAU 50 0 25 50 100 < ov FEET ) 1inch =onft THIS SIHEET TO BE USED FOR EROSION AND SILTATION CONTROL ONLY!!NM DATE: cc 7-27-06 GENERAL REVISIONS cc 3.01 SAFETY FEN� E 1 "=50' 0-0-0— REVISED PER COUNTY COMMENTS TEMPORARY STONE DESIGNER: E—.R —M. P. 7-20-07 REVE-E—DPER COUNTY COMMENTS -DRAFTSMAN- 3.02 CONSTRUCTION — FILE NO. SP -027F ENTRANCE� ACTION SHEET 3 OF 12 3.05 SILT FENCE� X—X—X 3.07 STORM DRAII I q INLET PROTECTION Ld 108 CULVERT INLET PROTECTION� TEMPORARY� 3.09 DIVERSION DIKE �� TEMPORARY� [) 3.11 RIGHT-OF-WAY DIVERSION TEMPORARY� 3.14 SEDIMENT BASIN 3.18 OUTLET PROTECTION� TEMPORARY � OTS ' � . SEEDING w 3.37 TREES, SHRUBS, � IVINES AND GROUND COVER vm 3-38 TREE PRESERVA- FION AND PROTECT9N ` —0-0-0— lu REFER TO �� NARRATIVE AND VIRGINIA ��T�T� ��70�/(lN �� - - ' ' ' -- ' �- -�� STATE � � . _ __. `~`~.~. , �� 0k��NT /`/lNT�/l/ A�N��0[l�� k�/l�� jN��k��Tl(l� -' ----''''—'' --'''''-- '''''`~~--'' FOR .,~.^^_ INFORMATION. ADDITIONAL SILT FENCE SHALL BE INSTALLED AROUND INDIVIDUAL BUILDING «�|T�«| �lN/`� DD�� A|U SLOPES A�V� ��.�� .��...� �.�� ..�� ..., ...�� ..^��. ��.^ ."`,�� BEEN STABILIZED AS REQUIRED. GRAPHIC SCAU 50 0 25 50 100 < ov FEET ) 1inch =onft THIS SIHEET TO BE USED FOR EROSION AND SILTATION CONTROL ONLY!!NM ++ DATE: cc 7-27-06 GENERAL REVISIONS cc cc GENERAL REVISIONS SCALE: 1 "=50' 4-18-07 REVISED PER COUNTY COMMENTS DESIGNER: E—.R —M. P. 7-20-07 REVE-E—DPER COUNTY COMMENTS -DRAFTSMAN- --Irp- . L. R. /D. M. P. — FILE NO. SP -027F DATE ACTION SHEET 3 OF 12 Ld p+ �� ++ DATE: cc 7-27-06 GENERAL REVISIONS 10-1-06 GENERAL REVISIONS SCALE: 1 "=50' 4-18-07 REVISED PER COUNTY COMMENTS DESIGNER: E—.R —M. P. 7-20-07 REVE-E—DPER COUNTY COMMENTS -DRAFTSMAN- --Irp- . L. R. /D. M. P. — FILE NO. SP -027F DATE ACTION SHEET 3 OF 12 Ld p+ �� [) ' � . w 0] ` 0000000 ++ DATE: cc 7-27-06 GENERAL REVISIONS 10-1-06 GENERAL REVISIONS SCALE: 1 "=50' 4-18-07 REVISED PER COUNTY COMMENTS DESIGNER: E—.R —M. P. 7-20-07 REVE-E—DPER COUNTY COMMENTS -DRAFTSMAN- --Irp- . L. R. /D. M. P. — FILE NO. SP -027F DATE ACTION SHEET 3 OF 12 p+ �� [) ' � . w 0] ` ENGINEERING GROUPE PROJECT STATUS DATE: 04/18/07 7-27-06 GENERAL REVISIONS 10-1-06 GENERAL REVISIONS SCALE: 1 "=50' 4-18-07 REVISED PER COUNTY COMMENTS DESIGNER: E—.R —M. P. 7-20-07 REVE-E—DPER COUNTY COMMENTS -DRAFTSMAN- --Irp- . L. R. /D. M. P. — FILE NO. SP -027F DATE ACTION SHEET 3 OF 12 "ATCHLINE SEE THIS SHEET N, 'JZ'` K, x / / !`/ / :rte j. - _ - /,_`. p Z IL, INV -OUT / Z A_ Z Is, �A_ -4 k, 83NOR7-8 -4. %7- 43t %9AF x -7O . . . . . . . ........ L. -Z L tt ti w 'K > x L <j - K . . Pa D ........ . . ..... 4";1-7 --,: — ------ - ---- Is A:) 7 N_ % "'IAC. . .. . ... ..... Afx DA\ -7- 2" TQ; S13. 4 4 4 4' 4 t,t l S ,is % % Isi f Y' 0 Ir DD5 II I tf is fc t st . ...... J 'Z e DAi:F9'09 C. --,INV A .4T2:` O 0 TO S$7�3 Z 's, C DD 0 7 73 7; )T 7 rf s\ V, X_ ts _j yr f 7 SEDNNT AND EROSM 0ON7ROL LE43M NO. TIITLE KEY SYM130L 3.01 SAFETY FENCE 00 0-0-0— 3.02 TEMPORARY STONE CONSTRUCTION �A U Ln 0 as ENTRANCE IX —X—x 3.05 SILT FENCE C) 3.07 STORM DRAIN a?h INLET PROTECTION 3.08 CULVERT INLET PROTECTION z 3.09 TEMPORARY DIVERSION DIKE PI TEMPORARY 3.11 RIGHT—OF—WAY �W)D 121 DIVERSION 0 3.14TEMPORARY SEDIMENT BASIN 0 0 3.18 OUT PROTECTION E-- 75 O 3.31 TEMPORARY TOO � SEEDING V) 3.37 TREES, SHRUBS, VINES AND GROUND COVER 3.38 TREE PRESERVATION 7p —0-0-0— AND PROTECION 0 > FLOW ARROW < DRAINAGE DIVIDE 4 0, 4 1St f x X' 1,3 TO DRARY 0 "TEMP ED---TO- IV 4f C x L 0 _'�--C-ONTRACT . . .... SAF — — - -_ --- — -3. WA I rE x 10 ar ra • 'U-- I U' ZONSTR�l ORACCESE .LIMITED T "'DRIV 00 A, I Rl� KW C) 0 D S El- ET 6A -N-0 135 3 0O x. O d 4 1 r k_/0 I 0. N O 6f 0 0. NO T_ E:ti fY I. -1 r - 0� 7 REFER TO ESS NARRATIVE AND VIRGINIA STATE EROSION' . . . . . .. Ile & SEDIMENT CONTROL HANDBOOK FOR MORE INFORMATION., ALL WORK IN EXISTING '0 fVDOT RIGHT- F-:�-WAY- -CMP -SER--,-- SUBJECT TO SEPARATE -RA SQ ADDITIONAL SILT FENCE SHALL BE INSTALLED AROUND T7RA vv,/ K PERMIT. -6A---.OF --I INDIVIDUAL BUILDING SITES ONCE DOWN HILL SLOPES HAVE -s-Er'DETA x STABILIZED AS REQUIRED. Jf ry JOriu JJ Pf BEENfdf DD PLEAS s'29 ROW$ FOR ALL INTERSECTION IMPROVEMENTS WITHIN THE ROUTE E PREVIOUSLY APPROVED DESIGN BY COLLINS lu t TEM' �Y,SEDIMENT BASIN -87 X tr REPLACtb,'Vrttj ApI_ 'UNDERGROUNb-,_S*Aw-, ;tiSITE PLAN FOR'-70�--UNQERLYING COMMERCI&Q, IT -,OF -BA PROPERTY, HE 'PURPOSE -THIS SEDIMENT rq 1�!;, THIS SET. THESE INTERSECTION IMPROVEMENTS WILL BE ENG INE AS TO BE,�Mog ON'THE FUTURE APPROVAL OF -ERING� SIGNED XX/XX/XX, WHICH HAS BEEN ATTACHIED TO TO PROVIDE WATER 'CONTROL FOR THE GRAPHIC SCALE 50 0 25 50 100 200 CONVIEYED NNECTING STRUCTURES 38 _T0,J_Z'T0 `3�3 COMPLETED /10 WDETAINED PORTION 01`��'BRMW<�OD DRIVE THAT IS .I` THE BASIN VtA-SNRM 'SEWER PIPE CONSTRUCTED BY OTHERS AND IT IS ASSUMED THE WORK WILL B E THE TAP np- P I A P wo r) r) r) i \ /r:- /A I I THE n �pinP To U) (n m r. 00 00 O �A U Ln 0 as 0 C) C) 00 ,z, w ,I - Ln Z, P-4 LLJ ;amo E, z cq cq ON L -4 tu 0 121 0 00 Ln CC) 0 0 U) (n m LLJ LSI E, z 0 0 LLJ 0 E-- 75 O U U � a V) ;T4 0 > < 0 (:-) z vi z 0 Z F- (_) U5 :D m D z < > 00 � 0 Li o LLJ U c) < c) :2 < < mm�m> 0 ED C) Li L1I I I Ld 0 --E Q_ a- a_ a_ c� U) U) 0 C) ILL, 0 0 LJ LLLLJ w w( V) m IV) cn > > �> > Wo- Li I I Li ILL] Ld r-) 0� CY ry Iti � < L` 00 00 0 0 0 CD 0 0 O I I LLJ N n (0 0 0) cz) 1Cj O ,TH OF 1y1 17 . II I �( Of__/4JO�H'N� MIAys K Lic. No. 19198 '4 10 -0, F 1, __�i - _. -1, - �v RE UNDERGROUND SYSTEM vWL-L. PROVIDE. AT LtAti g.- , I ENGINEERING GROUPE PROJECT STATUS DATE: le- "- - - O -UT !�,PORMN OF Nk 04/18/07 7 8RIAf 7-27-06 T, X SCALE: ER FM GENERAL REVISIONS SLOPES MUST BE 2:1 OR FLATTER. ALL SLOPES STEEPER THAN 3:1 THE' r064 RI E7 COVERAGE FOR. INV -1-03 GENERAL REVISIONS x 1 Inch = 50 ft MUST BE PLANTED WITH A LOW MAINT NANC NO \ I I I -, 10 1$7=501 GROUNDCOV R. k, MATCHLINE !;FF THIq qH PPT 4-18-07 REVISED PER COUNTY COMMENTS DESIGNER: L. R. /D.M.P. 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSMAN-. L. R /D.M.P. 10-9-09 REVISED PER COUNTY COMMENTS FILE NO, SP -027F DATE ACTION SHEET' 4 OF 12 1 E, E- E-- � a ;T4 > 04 z 0 ,TH OF 1y1 17 . II I �( Of__/4JO�H'N� MIAys K Lic. No. 19198 '4 10 -0, F 1, __�i - _. -1, - �v RE UNDERGROUND SYSTEM vWL-L. PROVIDE. AT LtAti g.- , I ENGINEERING GROUPE PROJECT STATUS DATE: le- "- - - O -UT !�,PORMN OF Nk 04/18/07 7 8RIAf 7-27-06 T, X SCALE: ER FM GENERAL REVISIONS SLOPES MUST BE 2:1 OR FLATTER. ALL SLOPES STEEPER THAN 3:1 THE' r064 RI E7 COVERAGE FOR. INV -1-03 GENERAL REVISIONS x 1 Inch = 50 ft MUST BE PLANTED WITH A LOW MAINT NANC NO \ I I I -, 10 1$7=501 GROUNDCOV R. k, MATCHLINE !;FF THIq qH PPT 4-18-07 REVISED PER COUNTY COMMENTS DESIGNER: L. R. /D.M.P. 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSMAN-. L. R /D.M.P. 10-9-09 REVISED PER COUNTY COMMENTS FILE NO, SP -027F DATE ACTION SHEET' 4 OF 12 1 N 0 T. E: REFER TO E&S NARRATIVE AND VIRGINIA STATE EROSION & SEDIMENT CONTROL HANDBOOK FOR MORE INFORMATION. ADDITIONAL SILT FENCE SHALL BE INSTALLED AROUND INDIVIDUAL BUILDING SITES ONCE DOWN HILL SLOPES HAVE BEEN STABILIZED AS REQUIRED. -.4 fir- • fr z -V -V r. ti x X y it Il A � \ 1 II tI It CUNZ) I SSJt,--ALLO)A(E ell SHEET A is f. SEEGA 4 4 > LL 0 DjA=17.5 q .___-....-..._-,_T0 SB -5 7 — — — — — — — - — -- L ♦ Lj Lu Z --c . ... ... ... _F CAREFUL Tb DPARCELSISTURB/ADJACENT,�, DURING CONSTRUCTION'. FT < NO CONSTRUCTION-" Y, ACCESS ALLOWED 1,SEE SHEET SA;' 1> NOTE 4 0000, ---CONTRA _�UL CT6R TC`I3E CARE NOT T TO ;T)RB- ADJACENT` PARQE_L-S'_` . . ....... DUR P7 7/' ING CON r PA=;-1a8CLAC -TO _�631B-4 A < 7'.., Tp < AqCESS -ALLOWED WO CONSTRUC -10 T T E'SHEET 6A, _TOTE 4 .9 Qko 'SEE SH MATCHLINE F[= GRAPHIC SCAM so 0 25 50 100 200 ( IN 1m) 1 inch - 50 tL =CRITICAL SLOPES (;-1 257.) THIS SHEET TO BE USED FOR EROSION AND SILTATION CONTROL ONLY!MN! -5m SEDNWT AND EF1081ON OONTROL LX<*M NO. q TM -E KEY SYMBOL 3 . 01 GENERAL REVISIONS SAFETY FENCE 00 G1 CD 0-0-0 COUNTY COMMENTS TEMPORARY STONE REVISED PER O 0-01 u P-4 Ln 3.02 w CONSTRUCTION JIL 4 0 p uo Ln O.O �Co ENTRANCE 00YI et w Z 3.05 SILT FENCE x X—x 3.07 STORM DRAIN o z tr 1jALET PROTECTION E - z 3.08 CULVERT INLET 0 C) Lj 0 PROTECTION t 0 TEMPORARY it cn Cn (v 0 T u DIVERSION DIKE 0 Vold LLL4 TEMPORARY U3.1 3.11 RIGHT-OF-WAY r Ln DIVERSION > cf) 3.12 DIVERSION 0 0 TEMPORARY SEDIMENT BASIN DO z OUTLET =3q'r1i�_'fX 'ex NIP-, 15.18 PROTECTION D 3.31 Im TEMPORARY (TS) SEEDING 0 0 1-5 37 TREES, SHRUBS, VINES Q APUD GROUND COVER (_) < 3.38 TREE PRESERVATION PROTECTON —0-0-0 a- BAND a_- EL 0 Z w FLOW ARROW I i I LLJ DRAINAGE DIVIDE LJ N 0 T. E: REFER TO E&S NARRATIVE AND VIRGINIA STATE EROSION & SEDIMENT CONTROL HANDBOOK FOR MORE INFORMATION. ADDITIONAL SILT FENCE SHALL BE INSTALLED AROUND INDIVIDUAL BUILDING SITES ONCE DOWN HILL SLOPES HAVE BEEN STABILIZED AS REQUIRED. -.4 fir- • fr z -V -V r. ti x X y it Il A � \ 1 II tI It CUNZ) I SSJt,--ALLO)A(E ell SHEET A is f. SEEGA 4 4 > LL 0 DjA=17.5 q .___-....-..._-,_T0 SB -5 7 — — — — — — — - — -- L ♦ Lj Lu Z --c . ... ... ... _F CAREFUL Tb DPARCELSISTURB/ADJACENT,�, DURING CONSTRUCTION'. FT < NO CONSTRUCTION-" Y, ACCESS ALLOWED 1,SEE SHEET SA;' 1> NOTE 4 0000, ---CONTRA _�UL CT6R TC`I3E CARE NOT T TO ;T)RB- ADJACENT` PARQE_L-S'_` . . ....... DUR P7 7/' ING CON r PA=;-1a8CLAC -TO _�631B-4 A < 7'.., Tp < AqCESS -ALLOWED WO CONSTRUC -10 T T E'SHEET 6A, _TOTE 4 .9 Qko 'SEE SH MATCHLINE F[= GRAPHIC SCAM so 0 25 50 100 200 ( IN 1m) 1 inch - 50 tL =CRITICAL SLOPES (;-1 257.) THIS SHEET TO BE USED FOR EROSION AND SILTATION CONTROL ONLY!MN! -5m PROJECT STATUS cc q GENERAL REVISIONS SCALE: 00 GENERAL REVISIONS 00 G1 CD REVISED PER COUNTY COMMENTS DESIGNE 7-20-07 REVISED PER O 0-01 u P-4 Ln 7w w m 00 a, 4 0 p uo Ln O.O �Co CD r - i= 00YI et w Z Ln E 4 o z tr E - z E- 0 C) Lj 0 t 0 ON it cn Cn (v 0 T u Z 0 Vold LLL4 Ln U3.1 0 ri O r Ln 0 > cf) < 000 '0 2. JOHN S. MATO. K Uc. No. 19998 It /a X A 0000,1�� 000, � ONAL 0"' ENGINEERING GROUPE PROJECT STATUS cc 7-27-06 GENERAL REVISIONS SCALE: 10-1-06 GENERAL REVISIONS f__ REVISED PER COUNTY COMMENTS DESIGNE 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSN 10-9-09 REVISED PER COUNTY COMMENTS w V) LJ E. �Co E- Z E 4 z E - z E- 0 C) Lj 0 t 0 z C) Z 0 > < 0 0 DO z < D =) Im 5: 0 0 a_ 0 Lj Q LLJ C:� 0 (_) < z< a- � a_- EL 0 Z w < 0 I i I LLJ W LJ mm lad z =, D c) jc� Q co V) 0 0 Ld LLJ ILLJ L.Li LU V) V) < (n V) IV) (n V) 7 V) V) 5 WCL L'i Li LLJ L'i w C) 00: 0 r,- 00 co cc 00 0*1 0 to CD CD 0 C) C) 0 0 (c) 0) Lij t r- c::) 0 C co 0 0 L-T-FtT � 1 O I z 000 '0 2. JOHN S. MATO. K Uc. No. 19998 It /a X A 0000,1�� 000, � ONAL 0"' ENGINEERING GROUPE PROJECT STATUS cc 7-27-06 GENERAL REVISIONS SCALE: 10-1-06 GENERAL REVISIONS Vl REVISED PER COUNTY COMMENTS DESIGNE 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSN 10-9-09 REVISED PER COUNTY COMMENTS Z1, E. E- Z E 4 z E - z E- E-4 z 'VWAI� t z Z 0 000 '0 2. JOHN S. MATO. K Uc. No. 19998 It /a X A 0000,1�� 000, � ONAL 0"' ENGINEERING GROUPE PROJECT STATUS DATE: 7-27-06 GENERAL REVISIONS SCALE: 10-1-06 GENERAL REVISIONS 4-18-07 REVISED PER COUNTY COMMENTS DESIGNE 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSN 10-9-09 REVISED PER COUNTY COMMENTS 04/18/07 1"=50' FILL IINU. SP -027F DATE I ACTION I SHEET 5 OF 12 G:\PROJECT\Briarwood\ENG\DWG\E&SC Plan\00-K4800.dwg, 1/11/2010 11:20:55 AM ew!!r'&A emr. AND EAO" C 0WROL L NO. WLE KEY SYMBOL n 0.023 Q 18.2 CFS 3.01 SAFETY FENCE 0-0-0 C) TEMPORARY STONE Ln z z P__( z 3.02 CONSTRUCTION U) U-I L.Li LIJ Cn LLJ ENTRANCECE E -- z N F-- 3.05 SILT FENCE x 3.07 STORM DRAIN INLET PROTECTION E-4 3.08 I CULVERT INLET 0 U O 0 0 PROTECTION sir i TEMPORARY3.09 DIVER BION DIKE 0 pp, TEMPORARY E --4 3.11 RIGHT-OF-WAY DIVERSION 3.14SEDIMEPi�T TEMPORARY BASIN 3.18 Ot�ITLET 0 PROTECTION .4 3.31 I TEMPORARY OTS SEE -DING 3.37 TREES, SIJ AND UNUUNU RUBS, VINES COVERHCC VEQ \77 3.38 TREE PRESERVATION 0 -0 -0 - AND PROTECTION D m FLOW� ARROW DRAIN� E av� 04 T_ U_ 0 (O w 1?% SETTLEMENT to 0.3FREE BOARD\ 0.71' 2 2' 71VA DA = 5.1 Ac c = 0.50 1=7.27 n 0.023 Q 18.2 CFS MIN SLOPE = 3.6 depth = 0.71 fit NORTH FORK RIVANNA RWR ............ 01,; ..... ...... ..... .. IIIOTE: -S�DIIVIENT BAS I 'ANENT II0-OWERTED TO �PTA ISwm PON Ifr or 7 P6 r I!C J. IIIT ARE 7 IIII0 . .. ..... ---- IIIIIIIIIIIIIIIIIIIIIIIIIIIIVF 0 IIIxjwlO I ---------- F� ------ ------ rri A`7 1-5 .... . ... .. . .... zto 0 I0 III0 ID A=14 IIIII'To SE IIIIII----------- IL I+IIIIIIIIINiglio it I ---------- m. IIIIIF- IIIIIIIIIIIIIf 0-0 ----- IIIIIIIIIIIIIII7 IIIIIIIIIIIIIIII-am"II+ Ij IIIIA. IIIIA, I9- IIIII I I cf) ILI) Cn 00 00 O0,11 Go Q C) Q) Ln z z P__( z U) U-I L.Li LIJ Cn LLJ E -- z N F-- > E-4 0 U O 0 0 LL -j sir i 0 cf) ILI) Cn 71 z z U) L.Li LIJ Cn LLJ E -- z F-- > E-4 0 0 LL -j 0 0 E --4 0 > .4 < 0 z D m D z > av� 0 Li Ld < 0 :Eft� < ry ry n- CL 0 Lj z < 0 >- LJ LjJ W III 0:� _ n 5- In In z r-)0 r) r-) (0 C/.) 0 0 0 LLJ Ld Lli III Ld U) (f) UiU3=< - - ry V) co > > (-)W In LLj Lj LLJ L.Li Li o 0 0:: < 0 r- 00 00 00 00 0 0) 0 0) 0 01 0 CD 0 0 r 1, (10 01) N CD N I C) I < n I I I l l 0n (D t -N ro - 0 0 PIE= H OP 000 FO; 0 k 0.0 7 III401 JOHN S. MAT SI DA 1.60 Ac. Lic. No 19998 NOTE REQ. WET STORAGE = 67 cu. yds X 1.60 Ac. = 107.2 cu. ydsPROV. WET STORAGE = 0.85 X 3,834 sq. feet X 3.25 feet = 10,591 cu. feet = 392 cu. yds REQ. DRY STORAGE = 67 cu. yds X 1.60 Ac. = 107.2 cu. yds PROV. DRY STORAGE (3,834 sq. feet + 5,577 sq. feet)/2 X 2.3 feet 10,823 cu. feet = X00 cu. yds REQ. STONE/RIP-RAP SPILLWAY = 6 feet X 2.78 Ac. = 16.68 feet PROV. STONE/R14AP SPILLWAY = 18 feet I REFER TO EBBS NARRATIVE AND VIRGINIA STATE EROSION & SEDIMENT CONTROL HANDBOOK FOR MORE INFORMATION. ADDITIONAL SILT FENCE SHALL BE INSTALLED AROUND INDIVIDUAL BUILDING SITES ONCE DOWN HILL SLOPES HAVE BEEN STABILIZED AS REQUIRED. THIS SHEET TO BE USED FOR EROSION AND SILTATION CONTROL ONLY!!!!!!!! GRAPHIC SCALE 25 50 100 I I I 11110000000010111 ( IN Fm I inch = 50 it. I--cl00000 I 000 00 ENGINEERING GROUPIE PROJECT STATUS DATE: 04/18/07 7-27-0d GENERAL REVISIONS 10-1-06 GENERAL REVISIONSSCALE: 1)1=507 4-18-07 REVISED PER COUNTY COMMENTS DESIGNER: L. R. D. M 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSMAN: L. R. D. M 10-9-09 REVISED PER COUNTY COMMENTS FILE NO. SP -027F DATE I ACT`ION SHEET' 6 OF 12 I E -- E- > E-4 E- E --4 > .4 z H OP 000 FO; 0 k 0.0 7 III401 JOHN S. MAT SI DA 1.60 Ac. Lic. No 19998 NOTE REQ. WET STORAGE = 67 cu. yds X 1.60 Ac. = 107.2 cu. ydsPROV. WET STORAGE = 0.85 X 3,834 sq. feet X 3.25 feet = 10,591 cu. feet = 392 cu. yds REQ. DRY STORAGE = 67 cu. yds X 1.60 Ac. = 107.2 cu. yds PROV. DRY STORAGE (3,834 sq. feet + 5,577 sq. feet)/2 X 2.3 feet 10,823 cu. feet = X00 cu. yds REQ. STONE/RIP-RAP SPILLWAY = 6 feet X 2.78 Ac. = 16.68 feet PROV. STONE/R14AP SPILLWAY = 18 feet I REFER TO EBBS NARRATIVE AND VIRGINIA STATE EROSION & SEDIMENT CONTROL HANDBOOK FOR MORE INFORMATION. ADDITIONAL SILT FENCE SHALL BE INSTALLED AROUND INDIVIDUAL BUILDING SITES ONCE DOWN HILL SLOPES HAVE BEEN STABILIZED AS REQUIRED. THIS SHEET TO BE USED FOR EROSION AND SILTATION CONTROL ONLY!!!!!!!! GRAPHIC SCALE 25 50 100 I I I 11110000000010111 ( IN Fm I inch = 50 it. I--cl00000 I 000 00 ENGINEERING GROUPIE PROJECT STATUS DATE: 04/18/07 7-27-0d GENERAL REVISIONS 10-1-06 GENERAL REVISIONSSCALE: 1)1=507 4-18-07 REVISED PER COUNTY COMMENTS DESIGNER: L. R. D. M 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSMAN: L. R. D. M 10-9-09 REVISED PER COUNTY COMMENTS FILE NO. SP -027F DATE I ACT`ION SHEET' 6 OF 12 I STONE CONSTRUCTION ACCESS--\ STONE CONSTRUCTION ACCESS 2% 70' MIN. 3" SM -2A ASPHALT TOP COURSE 2% 2% *MUST EXTEND FULL WIDTH OF INGRESS AND OPERATION FILTER CLOTH 6 " MIN. 21A AGGREGATE BASE PROFILE 70' MIN. / — ASPHALT PAVED WASH RACK EXISTING I PAVEMENTI EXISTING j 2 PAVEMENT I2% 12' MIN.* I POSITIVE DRAINAGE TO SEDIMENT TRAPPING DEWCE 12' MIN.iPOSIlIVE DRAINAGE 2% -ITO SEDIMENT TRAPPING DEVICE SECTIDN A -A A MINIMUM WATER TAP OF 2" IS REQUIRED WITH A MINIMUM WASH HOSE DIA. OF 1.5" PAVED WASH RACK NO SCALE RISER PIFE BASF, CONDITIONS TYPICAL CONCRETE BASE NOTES TYPICAL STEEL BASE FOR RISERS 10 FEET OR LESS IN HEIGHlr, THE ANCHORING MAY BE DONE IN ONE OF THE TWO FOLLOWING WAYS: 1.) A CONCRETE BASE 18 INCHES THICK AND TWICE THE WIDTH OF RISER DIAMETER SHALL BE USED AND THE RISER EMBEDD)ED 6 INCHES INTO THE CONCRETE. 2.) A SQUARE STEEL PLATE, A MINIMUM OF 1/4—INCH THICK AND HAVING A WIDTH EQUAL TO TWICE THE DIAMETER OF THE RISER SHALL BE USED; IT SHALL BE COVERED WITH 2.5 FEET OF STONE, GRAVEL, OR COMPACTED SOIL TO PREVENT FLOTATION. RQM IF THE STEEL BASE IS USED, SPECIAL ATTENTION SHOULD BE GIVEN TO COMPACTION SO THAT 95% COMPACTION IS ACHIEVED OVER THE PLATE. ALSO, ADDED PRECAUTIONS SHOULD BE TAKEN TO ENSURE THAT MATERIAL OVER THE PLATE IS NOT REMOVED ACCIDENTALLY DURING REMOVAkL OF SEDIMENT FROM BASIN, SEEMBIT AM BV" CONTWIL LEM0 Na. TITLE my eywwL 3.01 SAFETY FENCE Z 0-0-0 TEMPORARY STONE CONTRACTOR SHALL RESTORE THE SEDIMENT BASIN AREA TO PRE -CONSTRUCTION CONDITIONS, INCLUDING MUCKING OUT THE SEDIMENT AND REGRAD'AG AND REMOVING THE EMBANKMENT AND OUTFALL PIPE IN ACCORDANCE WITH THE RESTC,'",ATION PLAN SHOWN ON 3.02 CONSTRUCTION P-4 ,NM 1 1111 IN THE EVENT THE SEDIMENT BASINS HAVE NOT BEEN REMOVED WITHIN 30 MONTHS OF THE COMMENCEMENT OF CONSTRUCTION, THE CONTRAtCTOR SHALL PROVIDE ADDITIONAL _c 00 ENTRANCE:.>:.1..,..--. P c SHEETS 53A -53D OF THE APPROVED SITE PLAN. ALL PLANTINGS LOCATED ON THE O 00 COMMERCIAL PROPERTY SHALL BE INSTALLED AT SUCH TIME THAT THE 30 MONTHS HAS 3.05 SILT FENCE 8F Ix. X 3.07 STORM DRAIN la� INLET PROTECTION Ld 3.08 CULVERT INLET PROTECTION 3.09 TEMPORARY %R C) C) DIVERSION DIKE TEMPORARY 890 3.11 RIGHT—OF—WAY U s DIVERSION o® 0[_ dr' 3.14 TEMPORARY Lno SEDIMENT BASIN P-� 3.18 OUTLET 0 PROTECTION < 3.151 TEMPORARY SEEDING • 3.37 TREES, SHRUBS, VINES AND GROUND COVER 3.38 TREE PRESERVATION TIP —0-0-0— :Dm AND PROTECTON z FLOW ARROW N I 0 DRAINAGE DIVIDE Q CD CONSTRUCTION PHASING NARRATIVE THERE ARE SIX SEDIMENT BASINS AND ONE SEDIMENT TRAP THAT ARE TO BE CONSTRUCTED IN ORDER TO PROVIDE EROSION AND SEDIMENT CONTROL IN ACCORDANCE WITH STATE STANDARDS AND THE APPROVED PLANS. THE SEDIMENT BASIN'S AND TRAP ARE LOCATED AS SHOWN ON PHASE 11 OF THE EROSION AND SEDIMENT CONTROL PLANS. FOR EASE OF REFERENCE, THE SEDIMENT BASINS AT THE FRONT PORTION OF THE SITE it (EAST SIDE) ARE DENOTED SB1, SB2, S83, AND SB4, LABELLED FROM SOUTH TO NORTH. j AT THE REAR OF THIE SITE (WEST SIDE), SEDIMENT BASINS 5 AND 6 AND SEDIMENT TRAP ��-"-='!� ' j j 1 PROVIDE E+S FOR THE SITE. ST -1 IS TEMPORARY WHILE SB -5 AND 6 SHALL REMAIN 41 f IN PLACE AS THEY ARE TO BE CONVERTED TO PERMANENT SWM FACILITIES FOLLOWING CONSTRUCTION. UPON COMPLETION OF CONSTRUCTION, SB1, 2 AND 4 WILL BE REMOVED-! AND THE AREA RESTORED TO ORGINIAL CONDITIONS AS SHOWN ON THE PLANS. SB3 WILL REMAIN IN PLACE UNTIL SUCH TIME IT IS REMOVED AS PER THE FUTURE COMMERCIAL SITE PLAN WHERE THE POND WILL BE REPLACED WITH AN UNDERGROUND FACILITY. Ar �z THE FOLLOWING SHALL SUMMARIZE THE PHASED CONSTRUCTOIN OF THE SEDIMENT BASINS ow AND TRAPS: _N4 7 7- - PRIOR TO MASS SITE CLEARING AND GRADING, THE SIX SEDIMENT BASINS AND SEDIMENT TRAP WILL PP INSTALLED. r7r) OK11 V THE "IMIKAHKA AkAr)HKIT OF CLEARING AKIM (IDAMIKIG WILL BE PERFORMED TO INSTALL THE SEDIMENT BASINS AND TRAPS AS SHOWN BY THE CLEARING LIMITS ON THE APPROVED PLANS. THE CLEARING LIMITS SHALL BE STAKED IN THE FIELD BY A LICENSED SURVEYOR. NO MORE CLEARING OF TREES WILL BE PERFORMED THAN AS SHOWN ON THE APPROVED PLANS. TREE PROTECTION FENCING WILL BE INSTALLED ALONG THE CLEARING LIMITS AS SHOWN ON THE APPROVED PLANS. 161 THE CONTRACTOR SHALL NOTIFY THE COUNTY INSPECTOR WHEN THE CLEARING IS TO BEGIN AND THIS DATE SHALL CONSTITUTE COMMENCEMENT OF CONSTRUCTION. THIS DATE IS IMPORTANT SINCE ADDITIONAL PLANTINGS WILL BE REQUIRD IF THE SEDIMENT BASIN AREAS HAVE NOT BEEN RESTORED WITHIN 30 MONTHS OF THIS DATE. FOLLOWING INSTALLATION OF THE SEDIMENT BASINS, THE CONTRACTOR SHALL FIRST 16, PERMANENTLY SEED ALL CLEARED AREAS EXCEPT FOR THE WET STORAGE AREA OF THE SEDIMENT BASINS. FOLLOWING SEEDING OPERATIONS, THE CONTRACTOR IS TO INSTALL INTERIM PLANTINGS OF DECIDUOUS AND EVERGREEN TREES AND SHRUBS AS SHOWN ON THE POND DETAIL PLANS ON SHEETS 53A -53D OF THE APPROVED SITE PLAN. REFER TO LANDSCAPE PLAN, SHEETS 52 AND 53 FOR PLANT SPECIFICATIONS. THE PURPOSE OF THE PLANTING IS TO PROVIDE A VISUAL SCREEN BETWEEN ROUTE 29 AND THE ONGOING CONSTRUCTION OPERATIONS. CLEARED AREAS SHALL BE SEEDED WITHIN 14 DAYS OF INITIAL CLEARING. PERMANENT SEEDING SHALL BE COMPLETED IN ACCORDANCE WITH THE 7 VIRGINIA EROSOIN AND SEDIMENT CONTROL HANDBOOK. SEEDING AND PLANTING SHALL BE COMPLETED WITHIN 90 DAYS OF COMMENCEMENT OF CONSTRUCTION. rjj FOLLOWING INSTALLATION OF THE SEDIMENT TRAPS, THE CONTRACTOR SHALL FIRST L& PERMANENTLY SEED ALL CLEARED AREAS EXCEPT FOR! THE WET STORAGE AREA OF THE -Alt" . ... ..... .......... .... . SEDIMENT TRAPS. THE SEDIMENT TRAPS ARE TO REMAIN IN PLACE UNTIL, SUCH TIME AS At. CONSTRUCTION IS READY TO BEGIN IN THE FUTURE PHASE THE TRAPS ARE LOCATEDJr 0 WITHIN. 0 bA AS CONSTRUCTOIN PROGRESSES, THE CONTRACTOR MAY RECEIVE TFIE AUTHOR >,2/ AUTHORIZATION OF 1,nxA THE COUNTY INSPECTOR TO REMOVE THE SEDIMENT BASINS. THIS WILL ONLY OCCUR IF (f) THE CONTRIBUTING UPSTREAM DRAINAGE AREA TO EACH INDIVIDUAL BASIN IS STABILIZED V) OR PIPED VIA STORM SEWER TO ONE OF TWO PERMANENT STORWA`ER MANAGEMENT FACILITIES. Z UPON AUTHORIZATION TO REMOVE THE SEDIMENT BASIN BY THE CI UNTY INSPECTOR, THE CONTRACTOR SHALL RESTORE THE SEDIMENT BASIN AREA TO PRE -CONSTRUCTION CONDITIONS, INCLUDING MUCKING OUT THE SEDIMENT AND REGRAD'AG AND REMOVING THE EMBANKMENT AND OUTFALL PIPE IN ACCORDANCE WITH THE RESTC,'",ATION PLAN SHOWN ON SHEETS 53A -53D OF THE SITE PLAN. P-4 u $ 0 IN THE EVENT THE SEDIMENT BASINS HAVE NOT BEEN REMOVED WITHIN 30 MONTHS OF THE COMMENCEMENT OF CONSTRUCTION, THE CONTRAtCTOR SHALL PROVIDE ADDITIONAL _c 00 PLANTINGS ON THE COMMERCIAL PROPERTY AS SHOWN ON THE POND DETAIL PLANS ON P c SHEETS 53A -53D OF THE APPROVED SITE PLAN. ALL PLANTINGS LOCATED ON THE O 00 COMMERCIAL PROPERTY SHALL BE INSTALLED AT SUCH TIME THAT THE 30 MONTHS HAS Ln EXPIRED. cn MAINTENANCE NOTES I., THE OWNER SHALL BE RESPONSIBLE TO MAINTAIN ALL LANDSCAPING THROUGHOUT CONSTRUCTION. THE OWNER SHALL PERIODICALLY INSPECT THE LANDSCAPNG AND REPLACE DEAD OR DYING MATERIAL WITH LIKE SPECIES IMMEDIATELY. THE OWNER SHALL PERMANENTLY SEED ALL DISTRUBED AREAS THAT REMAIN DISTURBED FOR MORE THAN 14 DAYS, INCLUDING SEDIMENT BASIN AREA (OUTSIDE OF THE WET STORAGE AREAS) AND UPLAND CUT SLOPES. THE OWNER SHALL MAKE EVERY ATTEMPT TO MAINTAIN THE AREA AROUND THE SEDIMENT BASINS IN A CLEAN, NEAT MANNER. NO STORAGE OF MATERIALS OR CONSTRUCTION VEHICLES WILL BE ALLOWED IN THE VICINITY OF THE SEDIMENT BASINS. IN THE EVENT DEAD OR DYING LANDSCAING MATERIAL IS NOT REPLACED EVEN FOLLOWING A WRITTEN NOTICE TO THE OWNER BY THE COUNTY INSPECTOR STATING THE NEED FOR REPLANTING, THE COUNTY MAY PROCEED WITH REPLANTING AT THE OWNER'S EXPENSE. A LANDSCAPE BOND SHALL BE POSTED FOR ALL LANDSCAPE MATERIALS. 'THE BOND SHALL BE RETURNED TO THE OWNER FOLLOWING INSPECTION BY THE COUNTY 12 MONTHS FOLLOWING COMPLETION OF CONSTRUCTION TO ENSURE VIABILITY OF PLANTINGS. ALL INSTALLATOIN AND MAINTENANCE OF EROSOIN AND SEDIMENT CONTROL DEVICES, INCLUDING TEMPORARY AND PERMANENT SEEDING SHALL BE IN COMPLIANCE WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. 1) REFER TO E&S NARRATIVE AND VIRGINIA STATE EROSION & SEDIMENT CONTROL HANDBOOK FOR MORE INFORMATION, 2) ADDITIONAL SILT FENCE SHALL BE INSTALLED AROUND INDIVIDUAL BUILDING SITES ONCE DOWN HILL SLOPES HAVE BEEN STABILIZED AS REQUIRED. 3) THE OULET OF POND 4 (SEDIMENT BASIN 6) IN THE FLOODPLAIN WILL BE MONITORED FOR EROSION BY COUNTY PERSONNEL DURING CONSTRUCTION, SHOULD THE COUNTY DETERMINE THAT THE AREA IS ERODING OR LIKELY TO ERODE WITH DEVELOPMENT, THE DEVELOPER WILL BE REQUIRED TO CONTINUE THE CHANNEL TO THE RIVER OR CONSTRUCT A LEVEL SPREADER TO THE SPECIFICATIONS APPROVED BY THE COUNTY. THE COUNTY WILL BOND THIS POTENTIAL DOWNSTREAM WORK WITH POND 4 IN THE STORMWATER BOND. 4) CONSTRUCTION ACCESS TO THE SITE IS PERMITTED ONLY AT THE ENTRANCE AT BRIARWOOD DRIVE AND RT. 29. ( UK FEET ) I inoh — 50 it, THIS SHEET TO BE USED FOR EROSION AND SILTATION CONTROL ONLY!!Illlll ENGINEERING GROUPIE PROJECT STATUS 1 2-4-10 1 REVISED PER COUNTY COMMENTS 0 (f) V) 00 00 uo u P-4 u $ 0 0 _c 00 P c 0 u O 00 Ln z cn 4-4 O Ld • (8) Np %R C) C) UO v�.n 890 u U s o® 0[_ dr' CD ®� 00 Lno P-� 0 (f) V) 1 V) Lu Li V) LLJ z Ld • 0 0 Lj C) 0 u it 0 < 0 • < _D :Dm z Ld 0 0 Q CD Lj V) CL 75 0 uzj cr:y> >- lil LLJ Ld lil C_) -5; n d- n a- => `t z =) CO LLJ 0 0 UJ Ld LLJ Ld < u� V) V) fy) = 0 LuLLcl) Ld Li Li Li Li ll� Q 0 0� cr- ry � Iz < 0 0 0 < < 0 r- 0 00 0 CO 0 00 0 co 0 (3) 0 0') 0 0 I I I I I I I wI (D c'll 01 T 0< I I r- oc) N N-) C, 0 z H OF0%0 00 fl JOHN S.MAT IK Lic. No. 19 98 /0 0 21 000. DATE: 04/18/07 SCALE: 1 50' 7-20-07 REVISED PER COUNTY COMMENTS DESIGNEf 4-18-07 REVISED PER COUNTY COMMENTS - DRAFTSM 10-1-06 GENERAL REVISIONS FILE NO. 7-27-06 GENERAL REVISIONS DATE ACTION SHEET SP -027F 6A OF 12 G:\PROJECT\Briarwood\ENG\DWG\E&SC PIan\0i0-K4800.dwg, 2/4/2010 9:47:34 AM • • it • H OF0%0 00 fl JOHN S.MAT IK Lic. No. 19 98 /0 0 21 000. DATE: 04/18/07 SCALE: 1 50' 7-20-07 REVISED PER COUNTY COMMENTS DESIGNEf 4-18-07 REVISED PER COUNTY COMMENTS - DRAFTSM 10-1-06 GENERAL REVISIONS FILE NO. 7-27-06 GENERAL REVISIONS DATE ACTION SHEET SP -027F 6A OF 12 G:\PROJECT\Briarwood\ENG\DWG\E&SC PIan\0i0-K4800.dwg, 2/4/2010 9:47:34 AM / / / / / z ,f` '_1 ,`I � / // IIIIIIIIIIIIIIIIIIIMM., � EX R.0 W. I V I f i l"'_1 - __ ------- " I �:_-�-""^-""`a--_ - ---.------- I ir I I it / 11 " i l' " "'� _— -� r __ __ I/ �-- - 11 \_ "', 1. 1.11111--,- i ___� 11 I / I I , , - s - � -1 f / _-7-- ; -"______ _� I , I I r -F 11 I i - " z I I 'i / ii 1 i / " / � / I- , '1-1 >__�' __ - _� 11 I / - I ? - -11 _1 ,------_-- -_ z ______ \ ' -_ i 11 / I I / / / z I - _'� """ - , l I ? . ___ -----/' \ I / - � / / j 0A - z f " I - -_ -' _/ -_ -1 r i , I r i - I I I I I I / - / - - Ill- -1 t -1 .. , - _.- _-_ \ "I, _� i ��:1! � - 11 I / I 1_/ / j / / I - - , ; s � � ) i , / / ,,, � I- /'/ s -e- '/ _� --,, I-- / I t , z , i , f � - , , , _----- -, / / - - f , / / / x ---" `/ - � ./ __1 ---,---- - I I ! I I - / I/ -_ � I / - 'I j / v / r 1 I - , ,,,, _" / z i -11 i I - z - __� )f ,,, I _ /_01 - i f , " j11 I �/"___ . __ __ � f / " - . I , � �' � � 1 1 J, I ' I/I //- " I -1 Ir "I . i i l_1 -A-4' ____ ____ - _______..'_"_ ,-,--,- ___'.______ I I I I 11 I 1p l 11 I x I 1 -17 / I/ / / � -1/1 ' / __1 j 1 f 1 1 , I " 11 , ,"Ir 1 1 / I / ir ! - 1� / i'' / - _� / ___11 _____-___ __� ��' ___________' _ \ \� % I I X/ /___ 11' � i ' F i I I . 11 / , \ I . - I , i - . � "I , I / , / I - / / / � - .1 I / _,-, __1__1 I---- - � _ ______ ---"-- - -_ -_ \ N \\ _1\1 11 11 11 11 � I '� , ir - If i I z A el ,, 1 " I'll I � "I", - / i 11 - 11 1�1 __ - - 11 11 I " " -_ I I iy I " !, / � J:' " ", ", ", / /" / / /1' . � ___` _41-1 _'__ ___'__' "I ------ __-, \ '� \ 11 I -F I 11 I lm_1 I xv I / I- � /,I/I, /" F° r , i 1z' / , 11 ", I -_ -- I I / / ,f / I / " / - I / 11 / "I __1 _"_1l ____ _�_ -1 11 11 l. i I I , " j f I P / I I / / "I / - _1`� / / -1 _1 11 -1 - '� -_ - - 11 I I - 11 - / I I � /_ - _" -- I I f / -1 - , - � " , I " ,b I I / I---- ----.-I--- � I � / ,` , 2 " 1, / / - I / / / / i I -1 \ / - I/ _/ , / J / 11 " 11 I I j �X' y / I " - I I ____ _j / / '/ " �� ---,-- __ - \ I i � / I I I /'' - - I IF / " I , j - / / 11 - ,11 1�1- I V, 11 __ _'1___-.___ -, % ' I It ) 4 i / I I / / ' / ' 11 � - I I/ / --I- "or I/ I iz � " .1�e 1 / 1. I - I I ,,, ! 11 l' 1 , " �f ---,-,--- \ \ � ) ( c I I x - I " ,' / - . ,I . s / , I 1 / " , / I 11 1. / 11 ___----I- __11 � f k � I i ; x 1 I / I f I .1 --,-"-, / I , , / I I I I I / , , c I , / I / 11 _ "----" / / 11 i I t I I " / / I I . -_ . Al i I .'�` I � � 11 ( . I I I c _'/ I I , I " - I - � i I ' i I I - / / I " , / / / 1 11 _/ '--� '�_ ' / / � / I " I " / , ,,, f "', , , j i / --- ___' - i I " / ; / F l , � �' I 1 // j I - -_ / ill / " �' I 11 I i I I I I y 11 / " . " l F , " I - l? I ! . I l " I _'_� I I . / I ; " , /it` 11 I � / , 'i �i I I : .1 - Ft , / I , I " I 1 I / __---- " / I l "I ____1_' I -I-,' . x � I I .- _�_ / j, / / / ", ", i, I / �__ , _ r f " � f , / / i / , i, / , , i? I I � I / - ! -_ / / .. I -- " __ '�' . --- i --..- I � I I e j il / I / i 11 -j I ir / , - , - , , / / ( I I 11 / / - 11 -_ " / I - / / - c I ' � I 1 / i>, I � I j I I 1, ` I / / / , ., , i f 1 1 I- - - 11 J, I I / __ - - - - I 11 I _-) 11 I / 1 Y / ; / - 11 " , � �� I I I l ) i, I J / / - - I _�" - i 11" \ I _1_1 � ll I` 1 "..' I � - , ! 'r- j " i / , I . - 11 11 - ll - I \ 11 / I I " � I f i " ! 1 , i . I I I If , I - I- / I - / / I j - . - _ . " - � . i '! , , if I �. f � i f 11 i � / I / ' 11 / _________"__ I / ' / - _ --""--\ - I/ I ( . ,. - 1 I I I / / I - . _'� . - 17- I I / / N I , I � , , f � - I / f'' -_ v i \1 P y / I/ Y s i I / _ I / / f i / - , f / j " j, / I f ji .r 11 "� "- 11 _____ z / I I I / / - i I - I i --- .t`' -----I __1 I / I 1 7 1 �' I ! I - I _ -117 I I i , - � i I . � / I" 11 f I - - I, . I - j / / - -11 I -_ I -? i � J, / / / 1� / / / \ " i / i / I / / , / - / - "! 1 / i / / / i x, ", '1 iii i / 11 I I / � I j i I - �__'__11111111 __ ___ __ �'z I \ I i I 11 11 ! / � I � I , , / , i °>{ / � 11 � 11 -_ - �' . I I �' i I I 11 / � I 1\ 'I- j / / " _� I " f i � � / / I . � 'I t - -I- �- 2 1 11 � I , e I i 11 / / � ! I ir 1� z , � I 1 / � - - I----- i � i ---,-- -__"-1."____ - -- - \ i f I � j ' 11 / I - \ \ * .,.-" I t 11 - / l " � � I j I / ;t I � ____ ____ I - � 11 - I i _-1 . I - � / , , - � __'/ j'__ - "_" -,-"--,--- --- I / i 1 1 ; � , I I / l I i / 'j I 1, 1 � t I I , I - - F , I �'/ / / / / I " / J r / .1-1 i i . -, - -- __'___' ---"- _____ d ,; ji / / .- \ i , - / . I I / / � I I f I �� I / / ; ------ / I - I I 1 I z . / '� � ; 1 I / / I 1 4 / I \ � f i l , i � ; /I i ! --,--,--, --- " � , i I I 11 f - I /_ _'__ ! � f I I I 11 I / I / . I I I . I " I , I 11 _'� / / :Fs'' 1 I I "I "I - -Z j, _/ i If \1 r`, "; " j I I ( i , , - I -) ; - "/ / / � , , / / , / " z t . I � g� ` / , / 1 / i . . I , l ,- I/ \ I z If " � , I 1 ., 1 1 I/ I Il' '_"_____,_'.1 _'___ _ 11 7 I I I I / 11 / / / . �11 J - I ......... ', ♦ ----__' ./ ; j I I I I I , , - I I ' , I I i 11 I / . 11 - I I I � . ! I 111� � / 11 I 11 I " / 11 .I I - / / � 0 _/ I "` _'-, I I I _-.1 __"'."". . .. . ..... _ _____1 ' f I ( f � �e l I / / \ A i " / / " - / I "Ill-," I . . - � � ' � / _ i . � i � 1 f z i ! / \_ __�' t � , '� / / - i - 11 - ! I ' " % 1, 0 / z / . I � __ ___ ,-"--" ,----"- p i - / " - I 11 � �! " � I i __ __'_ "_.__ ___'__'____.__"._ _Q - j I i I I / , I A__ I ", t P / / " , , , I �' . / k -- I J , " 11 " \ " '�.� / i, - 11 11 / I i I i � � , i I '_ ________1' __'__'_____'______ ,-,-----, � / i / I I ; � ; j I 11 I - / 11 �� i k I I/ _____ ___ - I ! I . / ,I 11 � I I I I I - 11 1\ � / I - �' 11 I i i , " I I / ' " ___� ------.---,-,-- 0) I j / j , - , � p � , _/ / / I / ' � 1 I i � 1 11 \ f � � I I L -- _"_______'_'__.__" _ - 11 i / �i ' 1 f f i \ - / I I , I 1 I 5, � / I i � -_ __ __' I _____' - ,-"--/-\ / I/ I t13 i � � j I / / . : I 1, 11111 i \ .. i / - _'_' -_ - - . i f "-/ j II m, \ ,( / r, / I I . I I . 11 _% y - I I II 1 f I I I i - ) i " I " ___ �_ 11 'r I "' 11, _" 11 - '_ --::X-- - ___'_�" q I 11 I ; ! t . 11 I I � 1� I I l . i - I . I 4 1 L I• I l f ---",-- ... I . 11 I - I r I I " I I \ _____ � -_ - I l f I 1j / " I I // t I 11 i I --"- --"--" � I I • - I--- - - ____ - __'__ I I � � t . \ �5 ----. ___' _ �'\ , t , i f! f / / "e�" " j� � � _ - _� _' --,-,----- -, " ,- __'� 11, I 11 f f j ! I _____ - _ -- _- .. i ; I - � I ; I \'• -.-, _ ____ ls, '__ r i�- I ( ! I1, - - I '. , � f -'."' '. ; -, "" I � - I- ( I - 1, I i ' I ,� T", I I I ___ , -_ .'��' I ""�� '. , x " I I I ----T __ ] - , - �" ". , I - ' I � I , I N __� - __ " ------ ____ ... '__'� '� i j i j " 11 � I i I I 11 - Jt -1 - - - j - , , �" " �' i I � \ I ____ --,-- � " , - — -1_s-"_, I s I , \ - I - _ __ . � , 'i - , j l' I 'I -, � --- --- ,____ _"__ I 11 I I -, I — __ _ ____1 I/ 4 ------ � \ \ \ _ __� _____ - I- j I I � \ -_ _____ ,_I -r"', f j ,- -_ - ; I c i F I i I �_? - i A I I . \ __ __ ___� — — ---_ - \ I r - - , I --F�, C! E,,,'\R�--,_.2'-_____ . _ _- _\ , . I -1 I ---- � --- I— 'Ii' , k--.' �/"' ,. � � -� LII Al S C) ______ __ ------- __'_ ___ __� \1 k, I I P \1 1 _'�--- ) -11 i - 11 � i - ---�g�.'.""� ... � - " - ____ 11-- N, 11 I \-.-- % --I ,--- - W_ '�\ -, - --, �-_ - ` \iL "- I ' - 3 i)"_'� i��i __ __- - I z , . ..' -- \`A\ ,\ i - ___ - -.U-- k� 11 " 1 -\\, " � ( >< __ � /_/ �___ _ -1 - -, -- _--'k - .1. -1 , .- __ - � - ,----,----- -, "I I-, ' \1 \ \I- - i ------ �� __� k�'." � . ." 1: ' - �--_ , .� .. , � ____"_� , C�' S'jaD � \ �' 11 i b" -1 -" _�� , " , t I - '_'__"___ ____ - ___w _ ------- I \ / ,\ ,,- / , -�6 ,�. i I �� 1\1 - - - I � " I ";/ I , - '' r''.:I-;t. �- '' 'iI_ - -- . \\ \ , - t .1 " . ,. , " ,i - -. Il' " '� . ,-,,,-, '- 1\ I I '\ "\t i ___ _____'__ - - __— --.-----, i C*u� " _ , . , . /'4 1 X", i, , m , � .1' I i �. � ii -v- � \�'_' - , , � " __ - - - , 'i \ �I I v '_' u ,-,4 ; , \ ' ' � 1 ? I., , (:�' _. "I 11 1, - - -"______ ---- � - I __ , i - 3� - . �' � / � _�'_- —�!' i j 11 . L \ - , I _';� — , " , '�_ -1 \ I\ \ , - N \ \ \1 , i ____ - � - " -i-A-32-'- pK' --,-- \ , �� ___ _��_� .. ... " . . - ��i'ii. \ \ \ , 1 \ I \ �' - - 1� I _-_ -, � '\1 I - .;X ; " _�,�� 1 - - , I �� .11 _' � - ll - I � �- - — i , I-, -_ ___ ��-— _!��'_!� I . � \ . I , , ." . ,_ --- - I �_ %..' ' I !f'i'&� �z"' --- _T-�_— ill x\ - .__L =7 - N : I.,. I N""', \ '\ , , " \ - -11 __ _'� -------- __� -_ - -,-_ � ; _' 'k'1____' -1 " 11 \ , 11 - - � -,--- 1, "- - i -1 ; .. .... - - .--- ___ _" __ _--- __ 1_' , - I- '.", '. �' \. i. ,Pll!r\-I--- _'_ " '�� _-Z' 11 _7'�- ,-_ ' - I ", I , - _�__ -_ _ -- - � -, I -_ I . I - -_ ___ ____ - ", -----I- -.-.I- ---' -------------- - -, . I � __ ..- 11 c ' - - I 7, '� AIC '. - - : I � - � \__' � I i t' i " _ I 1 "-f f ,*- -- I c I 11 i 1 i � I " - -- , _____ " ,- . _ ", � �q f i i �. mH-1 i I I f I I --—_----- - - ----,-,-,. __'__._'_.__' - �' __'__1 1� - - - -_ c I it ; i \ ir ! I 1. .. 1, 11 \' , - ___ - ; _._ I l . - ; . ___� "" ,`_ - I \\. ki -, 1 — I . I I 1 TOP-474.�l -, t I � , , " �y \ .. '�' ', ". �" ", 1. , I - - — - , - -1-1- -I--- '01'." lzx � b , ., -,___ -,-.-" i , , " � -1--:1 � 41 Itv. ,14-4 . I I I � . W-1 i _" 4-. _- E 'i , - ; 6 �� " f I r -4"!c -' i i.. � ... I \ -, ", " '� �_' -, _ _1 -1 �' - __ -I-.----- I., ',"'� ", '�_ � - -1 ... . ... - -L.-- --- j --.ts � I \ INV, IN=46§�70 ,'� A i � � � \ \' , - I ___ ____ I Z� _.- - ___ - __ - 1-11 � �� ! I I TO, Z7�141.61 ER \ �' , _ , ____ / I I _N _'-2��- $ Av. IN-wso-t' - _--l�_ __-, - - ----- 1. -+INV_-OUT�: 7'0P-480,�" I 11 .111 N. � . �-pfl� �. ".. ..' ,\\ � I � 11 I �' - I �' _11 I -_ I 1Ei)I3iEa I _ 1. :! : ; ;- i : �i I t' � I �_ 1. . _�_ . .- -1-1 I- X_ — ____ " . I 11 .' , � I . I _1 '_ . " __�' I � - i -__ I t tmv� ou-rlr-4�lu .11, � _4�8,5 __7 i " .1 "t? , 'i . , --- - I ___ -11 ... . �'__.'_ '�� , � \� i ,/ - _ j c I ' ' _O J � , \ \ _ - I'll __ --- , . ____ ' '_ " --- � I i , '��w I \ - '� _.__�_ _�'�.. _'___� '___� '__� I------ -1 -_ I 11 - I 24p-1, I i I � INV� IN -4 420 ip 1 1 1 f �U �' - -1 I _ I '1-__-_'_ "', � -, ,k� 1, AX - .-, \ - , I '"�-:_-Ii�n� '_ __ ; i � � - I � i -il" - I � - ' VUT�47401) - . 1. \ " '\ \ �'.lpq �- -,,-' ---I--- - - __�' :�� '� - , '� I - - i - ----.- I .'v' � - - .' �� _i�� ." . "N . I. - -, '. , " __ ___..' .. - --"-"-, , ; I ." I- -- .10 I -.,-" \ 1, . ." \ , , - � 1� I � _____ it __'. .� � I 1_._.' .. k- .- - !'�_ - __----i--7'- - �'�"'- -- -" ". �i .9 , . . . , _'z 7 _ \ I , " �_' - - - , 15 ,,,A*,, , � '_ - I , I -"-- *":� I I I i ! 1 4-1- _� � l' --fl, -.,- 7-A \ 2�\ -,.-": I -'-- - —� 17 �j "- - 1 "',�;'W-7, , = "i- -I-- - ��_'_� i . , , - �_ . - �"-'_ -- , --" ,-. - , .' _�. x A� \ 'I' \' . � '� - � 1 �t " , , .. ,- _L - --- � I I ., . __--- - ' m ... ! � Mt"7 \ i '_�"T k��_ __ -" , -1 - _'_-- ,,-- '� "'� ____' / I/ ___ I "`.�� ,I _jU . = / \ " , -I* mwh a .. 'w'F . . - ' - ' � 1, � I - - I � . ,' - __ - 'i 6w" --- ,:,--.! 1 - ' I, �_ -_ _�� , :_ L, '. "---,. _' -- - I - WKI"I "I I I i - - I " 'a _", 1. - . - I I I --- - - -1 I IE . I I " il - - - ;:7- 11_1_1.��__ =_ - , di_�_ - ' r^ . I _ " - I I " , - - . I, , - - - -_ ., - ,-\ ,. " \ '_"� - - __-1 ' -mulno- 44- - --- I , _ -- ... -- � -_ �_.__t - I 11 I , ., - "_ _ ____� '__ 11 -, ��' -_ 'N _ __.�' �_' - -- I -, --- - '2 'Lr ;�A� �' . I I I / z -7 I % '�'� '� " '�' - --- - , .- -1 ------- j.111____ - --- I I -, 11 I., ✓\ \ ".. I., __ i_-' --- ()Wt -u i � , -, - ,"', I .i , \ '� _ . i i - I �c i I ) 11 ir / / - � , I \ '. _k � __� 140__� 5 .__� - , � , - - - -_ � /4 I I � \' " , I ,- , I " '\� & � -",-. _� � I ' IeISE' 1�' I �' "� '.�\ ____"';�_' - --..- I _"� ____� -All- - - 'c '/' . -�i �_ "----L--T7 '�" �' I4'� IRU �v -1, ' \ \ - \ - ___� __ _ _t .. , , '_'t I � / ,-- 5�;'�T�-_m�'jc, sullp --- I c _ -.,. . � \ _�' __'_�-- �_ �111 �7 � --- ) -, �- --_;�' __1 ,,, - - - 'c A- \ - IMA ' YL?16�-4f04 40___ii� - . I _.." . 4 �'/ I � -1: -"I '��4.,. . I I j / - I i ��_ _20. % --� 4' wk ", ." " ;�__ _� .� __"'� � , \ � -- .__----- -77- �� - __P_11�7 P\k_" - �_�� ' ,I 11 � ---I'— ' -- i ---- ,,, -, "� 1511 � -4 ____ - I 11� 1� " , _ I f, _- - -_ - - --- -_ A / )". I w \ " , .\ , - - 1-1 ___1 Et� - - _ � `1 -z I . _" - , ��_ -_ I �_ ", 11 ,.", __ " ....... - ,,, -,-. - I I I I _� 11 e _1 --- 1, - I. f � J__ ... .. . � . ..... -_ " � _'�' "', - '� - - " ��--- `� , - _y I �' �1`�1L�'� � - i � C" , 7i� Loc , �_ f�_ _,` I I , � �� , , -, " I p ;�CAIZ' � , , " - '\' " ':�) "� -_ \. _.kmi� , __- 1,--' - I , . ...... . s_ � _ i___�L -- - ___ I - - I—_ I , __1 i� -_ ` " I _". ", - I 11 i : � . . - - , __ * . . I - . I a \ __\ ------- .. I SPAPE�111 �' ! ( j I "I-- /------- ---��..>l------ - - - I" �' - \:�� - '- - ' '11-.1 - - - - ____ ..� I " 11 " r r, k\ , -'--r,___,____ j .. . . ......... . . ..... � ...... . .... _ .. ... ... ___ -1 . - � -_ -11 - - 7:�-� - ---- i rL� �___�__�_w�� "�.rr _. _ -Vi, �' -_'�'�j'-r'_"_-'-t-. -�'-Ijw '.� , I z 1171,11, ., ., "I � , - ' I - _- ' -- , I _-, - - ----- -, I I . - 11 '. . - .'. - - - - - -_ �- ----x �� I .1 1, - �', i - 2::1�'� ;�.�' - - - I -1 - - - -- ' - Mp ��- -k, i�__" I j'\ I,- -_ __� - _- � _\�' - - '. �_ 'r . "� ' - , I 1 ��-71z:!7� �- - �_- - \ I- � --- ---"----,---- - ��7:;�jpF'r4 � / --- -- -,-- - __ -- / 1 1; — - ------- �__ L�1_ __ __-_ 11 - u/�'\ , - , ____`� '____� I �- jr-�� f<];�.�t"�";' " ,7c"'_' .1 \ ""r', . �' I \ _ _� "'___ :1 , ____ ,f----- _-)1 ------ /_------_/ " - _. , - - ___111 1 — � _--I- ____� (��__ � � - 1 - __ _fF L- - q ..... . ' _ _'_� j- A___- _'�/ '--z - - - --z / " / ` � , 0k;N ,... 11 :� ' tz' __ � - , , - v - - - �'<', ,.'� , �/_ - � - 1 \.' I \ -- !�� ------ " - _'_-1 - ��' I I i -1. '."'-"k--- - ;� -, � 11 *�' - I , � , -1 'r- -- ' \ \. " - _ _�: __ �' __ - -1 - - _' I., _� / __11 // " / --1 f , ,(\ � - _' _r_.1 ____'2.t ' �' I " \ � \ 1__1 --. � _".: -_ __'/ -,- "', - - -6, 1-1 , __ - , - - - - '. -1 \ . _1 - - ___:�_ __"--'s�-- -!'I �S _"; / _ �v -- I 1. - '_-�. - �\ __� - - , �d . -T _z , '< I—- , '_� _ , "..' j ; �' - I ,,-- ", -lfr�- _ FF 9_9 /' . - ,- _ __r" _ ?'� -, / , , " � 1--'� - -4 , . J- -- ..... _"� --,--,-,, 11 - - _/ - gldfm�_ " -3 --- / -_ _r-_' � -- -, -f �. _j __7 _ I ", I 11 I � T! �' � � "I � '� %. - - 7 __ __ >- " ♦ , .:- / \' I - ____ - I , 'r'a".�_'; __. 4_-�7-f , �' :_Z�'- --/-';'-- '�K'-.A - - - _:�' ' ' - _ , S .' r , C I � __-, ". , -, ), - - 0 - -1 j - -�A-' - . - -_ - - , � 11 " �' - - --- 1 L. lcj(��- - __ '--F'-j ----- ___ -,-.-/ - , - --, � �'5' � f " --- - - - - -'� 11 /� ...... I ....... . ...... - I " f'j.__.'__. __ --y I i ?<"-, . , � "� " '- --- I ., . i .' �" i., __ -, I - ( _'.� [�� \ L I ... , ----,I- - _j_ -I__ _1 I - - I �� _� - _ - _� _:� - /' _�' - �_. - - i �_ - -t' / ) P � >��Y/_ � �b , __ - � , " �44_�-_ --- ------ _- -,- - -_ 11 . _j - 4 ':��' '.- � ��_—_�'�- -pz -- -- --I- �� I "�_-[ .. . ... __ -_:�:-j I z I f- I t'� . f . � I ---- 1 � "',__ 6 I - I N_ �' Fg�--�-- --,-- __ - / -,-- " I /i , - t" �' N I" � i ,� I � j _'-i 11 - ___ I __�_�_�'WvT - � / / . i I . ..... . ......... _ - I - :1�1��$"___51� \ k\ i \� i I I I - � �� - ", Z �/ ( ii, , I I , I j I - \j' 1� __ _1 - i- � 11 . I -7 1 / ! I - i A I 'k I � 1 i' I i . �/ _!�� ' "'�' "" F �'l I � j _j ...... .. -,-- 11� I' I A r'-��-'- , I __' _" '__ ' �' /7 , / �- - - -K_ j ii 'r / ,,, I I - ' j l - ' ' - I ___ - / " ' ' / ' " � ' I I / / I I I I` " i, 11 ' I' ' ' / " / ' I I I I I " / 11 / I I ' ' II I " ' '' ' " ' ' I I " � ' ' \ I I I I I I I ' � � I � I I � � " I I I I � I I i I il I I I \ I __ I \ 11 11 I I ' _�i 11 /11 11 ' ' � I I I I I , I I , I 11 -1 � � I - I - I I __ ______ 'l , " , , - I , , , , , , " l , , , , - / , i , - - , - i __ - , I " �________'_ T_'______ _v___ _/'\ !m' - - " ' - - - '% 5�c- _1 -----�� 1 11� "I ' . ' ___ 1, . --'-' . -, 11 � ' I - T� ..... " '� �"� � Y � . U�� 2 - :!� " ' - . _- �_ / � - I I 1 , �in"A "T' ,,,, qN,'L .... .. ,". ,,%, 1:�� \' I '-� - i " ", - - .. _A'_� 11 -I,- -1 110�1 , - I I 'I, _'� f�'�i�m __�__ -1 ---- -- � �_ 7_1 � I - �' ' __ - '7 ' L' -'N 7.. � 4T �1 iz A "I., i . K" , - -1 ik� %�" .' �--�'T' 11 - / � Ili --mt 1 - , 44 1 7 -t 11 __� I j- it 11", -, - , - — _�' I- / " - - --." 'k 1, _7 _ - �.' � _.. '_.�5,, t .- __ -11- l - - 1 -2, f . , �' i 1, _,, I I I " __ .__ I i��' _; I , , , _� . ... �� . ...... L' 11 `11� __ - - � ... I-— I ' 1 1 � lt,'�' -� 7____ -1 I \ 1� �: - 1/ _ ,- 8 1 1 , /I I r. , I 1, . . i . . -11 - --,,%,r- �`Zi_' _,,;'.�! �;�!IjYj�;" - '�r - ' 1 ;� �i '-11 , I �` 1 � ,36i 1 '�j I 32 Ifi ,1-, - - - " �i �";i= - _'. IlL."_'-Ii, '� , i!��'L�" - " ? i , , r - 1 te ' �' �= s _'g� "'� - I'� , �l 2-i I 11 '-'��__- . . ____� * I " -ft I i `7� � 4-0 � Z71 1.11 1-11- __7S �' , I , I � % i �' _!�_'___ . _�--__� - _::r i t __1 � y__1 � /111 4'r._, - 122 . 4<0' r- 1 \ -'I �j - �-�- - ", ____ - -��'- i"-'..,.'j-kT j,,. ,2, - '."� I " - -"�'--�-�'./' "' I 1 li, I ( 1z I" r, . ��, ... � _--4-- . f ,p,,, ,- - " ;!:��l,iil",ii"i�ll',�'l,'I��"""�j,'�l� 1: 11 ", , '.'i 11�' 6 -, 1.1i � ,-- I . I� I -r y ,---- 11 / , , 28 1 ,29 � I 1 � - 'k , i .1 "Ir I �! ,-' � / I ' / /` � �'r 0 �" i -, > r_" /-f L l' VW'�'�"% I'll �.e ',' il __[_" _ I , , 4�4'0 N'1'100._'Ip .... - IIIZ ' '� " , ,.%, " " __f -12 � ! �11 i 'k, ! '/ - ) 1, I " - L, v � �- - '15, I � - y � I i I I I t ; 44 Ila p I __ I '�� ""HI, I I T i � _", . L E i I :� , .k , r _�� ili t - � I- , � , ; 4 � 11 kill I I '- p " 1 , , g�'Vmvi _ ' " 11., 1. k �'� I _�'- I - f I � I � i t i � � - � . - "\ �'-' 1.11,4:v f" 1� ',--" � " I _. I " -"' i ,� � / f IV ,," /I f,l' ,I _,�-' L _Z 1 11 , . . I . � I 1 14/ 1 ' ), 2 � � ____�__�,_ --S �_ �_ - ___ - - __ I �f_ � � ,Ti/ --I I," I / - - Ir 13, 1-1- - '_ '�', - _,,�r,' , " -1 i -, - , I 1 , "! ! 7! V'111 o I I i � -1 � � � _"'L I i I i 1_1 � ,. - -, -'I.,k) - _-, - ",". � IIJ � - _ , _'. I-) -,-r- .trl.'1 , I f"'r,"'. -11 ------- 7 ,s � I I j "i --,-I '��WiX'YEIA ' ..''/ .... ... � ... � • �� lt� _�- � . I I i Ill . ; ,';� V�I il", 1 I k, I I i ' � - i :. _,4"; ,7- 1. I _� -- �____ _ � _-- -) _'�_; ":'kI,,'2-l.':".-' �7 1. , " �--' , 'p - I f ", -I"-- _'___27�__ . ., I " � I � I i 11 , I z j I I ,_ � I I i ' j , 1rrr'_'_:;� I f U I I I I I I ...... �j 1 :�'___Ti� ! J I I I I � "'r � 1 "/ 1, It � / _i� - , . ", � 1 : If � " I ik� ; , ., I . � v � _Nl " i I i �_ ____ , - - _ - 11 ,7" � I I -h lri� ' I :j 1 v , i � , , � i I � li � � 'i --� i I . . - - '). '_ - , I ✓Z i I � I _1 ! L I i I I / I I /i I � 7 - - - - � i � ' - _1- I I I I i . - �111 ��_.'64��j__t_ — __�_'i --,, -_ - -_ - "'r I., I 1 �' - .- `1 c �e� i � I . -4 �� I ___ _'__ -1-1 - __ __ ... I I )___ " - � - , -X " " 71� 7 _'_' � I I 1 I � ('� 'I I � ! � ! � � I I . I I , t I - I _ '�, -_� - -- --L� - _- '-I'- - - - I- ___ - , , � . 'ab' 11 I "� __ I I 1 � � I � - 7 , � -, I �' I - , , � _._ - - ' % - -- - -� - I - __-, __ - i � .f'� I - I � , - _ - - - l /� j f 1, � I - I � I I ',"I _." � I __ I � - __ - ' . I - 7_vi �d I ti q- I • I I 4 . il P, "j . ... 11 . ... ��44 __ - , - -1 � - zr_ ____- , __ � 1_1�� " � � i - I XI - _L_Jlr f1f / H" 7- - � ff-56 ---I yl --4 1 / � " , � � li l.ii T I I ' . • '""_�___�� ---_-_ : . '-_ , / � _X 11, en ' I - ,, � '�' - il, z -, 7 �' I 1-.,-,-,' �r � "�' J_ -1 ! -1 X" I 11 __ I.. .110 � /I 4 " "/ 11 / ,,, 4 I , � : , �' - , , -A FN�' .2 "� i i r I , __ L T, I I I - ____ - - �--/ - Z'! ," .- 11 -.1, - _11'<' '_ I _ " ---_ ctz ____ _'_�' ,,,� I ' " . . i ,�CSA A'C'!'&'�, EISA41'�' 1,' -W-Al , �- _< 11 I - � I � i - Cz�Af '�z ,,-, - . r I _ ____ >" --_'� "I 3 1�41 11_�'i I ..r '-1 I,- Z - '�� Es� w 1/ , I- ' - - '>'� _�__ 4! QA - � ��s _'Ew ' ' - "I z/111 Z�� C�' , - 1 i . � 11 I ' �'A i. . � 4 i . - 1. � - - 11 "'.� "I, - � � I � " I - - - � - I ' " __ , I � - i tl -, ---- - ------_� ---,-, 2--Z'----- _1_ 1Y I I kil: �S', (- F ( �� Fi"J? T�� , "I ��/ e, - --'_ I- --- - I /l/ / c� I - ____ --,--- _____ __ /'�/ - I" � � "" i &': "" lu �'! [,� �,l` r." (J '--- �1_ I/ 11 EX ) . rr'� t --- - '----I--✓ - $E�1_11�0 ' ' I / � !/ 4f�_ , ( / i . � I 'Qq ,---------- -----'---,- ---' " It___ , I I I / - I , 11 �• I � � ! ------ 2 . - , - i , i/ k- I i 1. % V / / '_' .- 1---lf.,", '.'� ' , I I . I \ - / , / � I I A __ I . X. \' , �' * 1 / 11 \ / I " A/ I � I / — " - -;� i / .I . , Z. 1 f I C. I - , I , , // � . i j � ,il I — � / . ./ A'X" �' �' � � ; , A 11 t \ /_k___ // '/ // " / /. >' .� \ �'-_ i % 11 1, I I Ji j ll, / � I i 9 r.'' , , 'C'Q�" l/ . " 1 � I , 1 i I I I i 71.1 p � / � I I � / / .. I r -.1. I/ . .-. .� � I J , . , I f �%1, . ,I i I - // . . ' ' s oc ., ___ , 1, I � "�. . . I 11 "✓�... � r,-' �'. i ) I I c e J .1 ' � 'Es 1/I , . i 11 I 11 ___/'.y',:'" . I I I - r ! . ", �_'i i � I f if I I I .i , ' '�' "'" I , /, I I '77� � , T"'+.__--%` I _' 11 J, ill I 11 I / ! '!�S _t ,r,,_, , '�'�IJW � `_ I, it ,41( " -Ill , - 11 ! i •i ' �__;�, . \' � 4'" 2 'R� -/. / ,-� . , % � - � '� _1_.___'1� - __, , , � � 3, " I � - - I ,- I 3 T - , '4, ' " _ '� - 1� ll / . . , �. .1 i�i' r I �) I ,�T I � ^ - -1 11 1� '. ",_A /� . , '. ,r i'li:W' " 'i t J 2 f I _ I � - -, I , i I - , I I , I 11 �'_-'--- � 11 "'�" " \ % I " �"' T " " I j � 1 I l I I 11�r // , � t " / I. . , , , .� l�! 1 k k' \ , ,-, l i�� 'll � . . I I I v , - - , . ? '.� , , , is 1 I . , � " / 1� , 1, is - I i f � - \_ -1 � 'I , � I ��' I , "i ! i r I r, �(_� Q_m � , I , , " //, e , 2 - � f - L "`()�"w, _ "' � / "I " , ,�,.,r . \�(' i t , I i I - , I i I "" .S\ I .. 1,1 .' . /'; .1 M, 1� \ � " i � � � , - , , i "I"'f' i - / , 0, El"Da.- - , / " -1. � i I . / / . r '' I , _ 35�r' i"�6"Ufpq ',',C'�"', , , / /" '.4" � . ,� !\�' �. I 1 � i i f \ " , , A � ! � - , I- 2� - - IkI7 -------- -- / ", �'_'A' r.. '�-f 11 i�' i i" i 11 11 ' I .1 i I I . -- - - I "I 11 . ; I I '� 1 I ! . 11 .1 - 11 I 'I" 11 I � I i - ,3 �___�_ � � _,_ I " I i k I - --- ". / I 4/ - - r " ) , - A I I � I Ij __ ,- , , ',i�� -, / , I � -�" . i ��"� 11�' I i E f j 11 - __ f�, .7 1 IN- It I I,\ __�J , , '.4' 1 " ' � v IN - '\ Ill \ 'I � " 1, . , I I . i , I i i y1 ,;.3 " " _ 2 ; . I . i 2 2 r I - r l-, '� /1402"00 . I I I ! \ _ , - 11 , , : I � I " 2'E-I�m' I i,\ � -11 ------ , , - 1. It � �'� --- Y", \ i I l 1, I I - � n _ Pil&__ f , i _1 1, , I I '�_ �� . I . � I / 'i z_ '��" -- r ---- " ,I ) � I ' N '. q P, I --_,r _' I I " 1 1 � " "be -, 11"jF �111 i j, Il';p , 1�1 -,--.-,-. ____ _ __,_A ____ �' " " I I ' ,CMP,, RISER�, I 1, �P,' 'i - I a�' I�.&- '�t,'_Ij�'�'r I I/ I , �'_ . "'. __ - , . I . i I r " � _ ' e, � I . .- . I 1\ _1" , - , I i , � - I T � sig' ___ 11 I I ?i 11 I . -I Irl ? , , I - � I / 1, ; 42 i 'I', . .' -, -r,_,__: .' I / "I if . � " I! ', ,'_ . -, ' - -_ A _ I I , � /TRASH RACK 11, Ill � I -1 / I , I ___\'- __-' -�-- -,.-,- " "'L" � '. _ __ _jI j i I , . . _ " _ , _ i __ ,- _kr- , "I 11 � _ ----- --- - i ( � - , -- (�* ---- k� , , " _ I ". _____'_ --- A_ - '. i S�E DMIL 11 � __ _ _ i i I : '. 4 ---'-- '_'_"' �r - -_ _tl _ _'. --::-- - /- " ", " I ___ , - A. � __'_ - - - - H \' � � , : ll I /zE f ' .- , I � I I S � EET 0 F � \ ' _ . , _ - __ _'_�_,_. , _ - . " 1 / L/ . . � I - -J I r \1 \ \ 11 I ' Ii , -1, 0 1 - � I " . t I / r � I -1 11 � . - J I � 1�1 I . I 11% I I"I'L 0 .1 1 11 Ill , , I � � .11 1._' \ 11 - /j, - I I -_ ,,.- _-, � I / ' I � � - 7 _�. -, ' - F . I , --- - .:�\' " I 'i " 1, , . � r I , % ---I i 42�73 0 " G"m P @ \ 1 .19` ), , ':":�i I 11 i . � , I 1, 1- � � I �� \ \ \ / -----.j I � i ;it1 2 �i I - � 5 , I , _� I I I,---- � , , \ 'i \ -_ . _ 111 , ' -1 I I I , , " 11 \ _'� ___' I , - � - I __' ':�' I " ., - \ \ � �_ A , __ ..../ I __ '� , \/.\ i � - \ " :>�'� . ., - � i -1 \ L 11, - _1 ' i � -, - I \1 '4' . - I \'\1 i t ___ - ,-.-.--- __1" , , 1'1�' _i7�: ,_ _. \ I - � \ I I , 11, .. '11� I , I - - �' \ .\ I I I - - �_' ""', , I—. " - `______ , - 1% 111 . I I----.-- - '<' 111-/", I \ 1) - 11 No co - - - _�' '�""'.' - \ � 11 - I _'_'_ �' _ P 6p —, ". \ — f SCCESjNT' �" _, __ -c�V '� �J;'-- -, �N� A-�l' -,I- I -_ --1.. L; " o I_';�1m _ I -'"�__ I��'_11 ,�'--, ",F- v" .' � �' _�\ �"12 \_____ EE SH ' - � -,-"- J :�� 1� '.� , , I I ,, -, ,-�--�7 - . \ , .� " - - , �' � -'z� " -, I I I N07 -E-,,4 CET 6A I - , . �'_' � " " i �"-'��'_ � "'--_"A'N-j_"�"� \1. \ I'll ' I � I , . , I I I \. I , , 1\ --- '.� I I ' s,, /- -x„ ."C'.'4 i SEDNEW I�AND EROSM CONMOL LEG80 NO. TIITLE � KEY SYMBOL . TEMPORARY STONE � � Nr ; En u U CN � � ,_� (It .'� ;;i pq , Ln c 3.02 CONSTRUCTION (�� m 0 is 4 0 p_.I cn p7 al Qj -p CD � 0 U t-� 6 - ENTRANCE em"14 — Ln �vl " (n 1, I 3.05 SILT FEN��E __ XXX ;--q 0 � . SUPER SILT (ENCE (SA) x X X x 3.07 STORM DRA�IN INLET PROTECTION (�) _a 1 (D �5 V) '4 0 = V1601 3.08 CULVERT INLET LET 1 9 R95LN __::::39&XNJ _____Ew ON I -ID CD I- . PROTECTION — r__ CD 3.09 I TEMPORARY DIVERSION DIKE � .) fpIRRI � u I.r 1�4 3.11 TEMPORARY RIGHT -OF -'WAY (�) c� 6 " I r . DIVERSION U tLo Ln r:' ,J 00 � 3.14 I I TEMPORARY SEDIMENT BASIN 04 � — 118 OUTLET� (OP) ', 7�'�121 '_'mi:'141 13:�V"Q li,', U) - PROTECTION to � ,,- ,';� " 3.20 ROCK CHECK� DAM - F A . 3.24 � STREAM CROSSING . Ir (�� ;4 - - I1�A'J.0 Al .11 %1;$'=';t' � ,�'... �. .... '.,`i�' 1��.' �`��;:)�"�L�!"". 3.37�--- 1 TREES, SHRUB', VINES AND GROUND �COVER (�� @ . TREE PRESER�ATIONTOP C) U) 3.38 AND PROTECT I - 0-0-0— 3.31 - TEMPORARY St � F EDING s -@- 3.32 PERMANENT SE EDINGs � 8 -- 3.39 � DUST CONTI` � ROL ' (O(i -(D-- 44 I FLOW ARROW I I '___ `'_`_�_ -<------ . - DRAINAGE DIVIDE Ill " U8 ftLr '111� 29 _ 11�1 4 7 -1. 'l , , 11 1, \ I I . ---,I- I f i 1� ____ _ ___ _�! ! - \,� - \ i I I , \ - � 1 **LOW MAINTENANCE NON -GRASSED GROUND COVER REQUIRED PER VIRGNINA EROSION AND SEIDMENT CONTROL HANDBOOK TABLE 3.37C REFER TO E&S NARRATIVE AND VIRGINIA STATE EROSION & SEDIMENT CONTROL HANDBOOK FOR MORE INFORMATION. AIDDITIONAL SILT FENCE SHALL BE INSTALLED AROUND INIDIVIDUAL BUILDING SITES ONCE DOWN HILL SLOPES HAVE BEEN STABILIZED AS REQUIRED. p'p, M Mla. -Mal 0- I - I , \ \ . _ ___ I-,-- -1 ,--,– . '�' - � ------- I— � i� I ."I 7� 1� , ( � . , 13'F -"11 75`KP'1f,]'_� G .� � " I "PI'S'[111 . kIN -, '( 4,i3.1 � 4,1"S .-_�__ - L')�' i _---_'_' __� '" . _�:_��_ - - �' 4 ... - . - '�._ - __ ''�' -------- , - _ -1, , I I 'UD13P2.�; a . N . ss I .- , I �' zocg "18"" ��Z"�Z' i 'Is- 290 "PAR I �. P� 3'&� d ' " , '0";6 A, 1, - , '�"-- tA&" I ,-I-,- ft � - W.0 1�411 ':_ �u* ':�_ --/, 4,', GRAPHIC SCALE 50 0 25 50 100 200 1 1 1 1 1 1 - ( IN Im ) 1 inch = 50 ft, _ -, -, �. I r� - 1 r\- -.�E- . ,� � , 'T'_ I.- - , 1 - -,", 1 N. . 11 � z -,� � \1 � i - i 1 1 �' rz� 112o - . . - I I I � 11 ; "L _� I --- I I —, I I z . I I I " 1\4 I . 1I 1-0-r - -, 1,, � 1 123 4 . .1 I 1V'-� 126 12t '--U4-- F 1-2 - .111, --- ��_Z�� --- , "t�-'_ " dm;�" --- -Z�____ "I A17Zj "�e7-�,_ - --- --- -- ----- -- - ',- )_ '�� - AL 10c 1;' - ' - _ - - __ , .� - ' _._'___'_'_' _--- __ _ - ---,-- - 1, N 41j� ' Z' , Bl� - 02,2�l �-__'_" RELD �iI, ,_ D&E;' \-, - - ---' �_�'_�� NA 71�D A -i-'- - - I- _A �-' 7, '�-' _ �-�41� ",R aa - i i- _11_34 (f w VICQ - P-4 co � . ! I � ?=Mc" 00 00 I r-- Lq a, CD CD 0 � � Nr ; En u U CN � � ,_� (It .'� ;;i pq , Ln c (D 8 � U bb S 0, � , ' a 00 m� m 0 is 4 0 p_.I cn �" G-, t -, Ln 0. . CIO r, CD to Qj -p CD � 0 U t-� 6 00 4 4 -t em"14 — Ln �vl " (n 1, I a wmio' (n I � L00 -4 ;--q 0 GS- :E u u ::E P-4 = C 0-1 1 (D �5 V) '4 0 = CD I P� I-4 --!� 9 E-4 ON I -ID CD I- � - — r__ CD "� b 'IV, L'o U N - �5 ji N CD .) fpIRRI � u I.r 1�4 r - , '� �> � ,F ; "=41 p . u 0 c� 6 " I r . b U tLo Ln r:' ,J 00 � , ;4 U 0 ;6 '::� =1 04 � — (� y 1_1� L-_ z �> j CD � O U) P; to rri .4 C1 - PL, c`0 cn co co ! I � P4 � � F__ : : i ; i =-! Z z A., = C/� I- LIJ Li (n 1, I I 1 GS- :E :E F__ ::E P-4 = C 0-1 L1.1 �,� '4 0 = CD I P� I-4 --!� - �. E-4 T_.,I P:� 00 C) u LLI C) E- I. -I �cn 0 u E-4 z 0 T__� 1 c) 0 7 G — '!!� -.,!!4 04 � — 0 z �> j :E U) P; P4 .4 z >_ >_ 0 >_ 86 ;4 < 0 i-- F-- (-) 1— v) 0 C) U) z z = F-- c) 1. D D m => z 44 > 0 0 a_, C) Ill co 0 Li 121- � � < < L.LJ Ld Ld 1,11 (_) :2 E F_ z Q r-) 0 (-Ito U L'j 0 C) 0 Ld Ld Li LLI f ) cn < 0 vii (() LIJ I'l L'_j I'l c) Lr- o01 o 0 < < < rl_ 0Iw CD I I I I I 0) I !Q - r[\ "t I 1 1 n I I I I b r- CO I- NI n I r--0 0 I 6 1 z 04— lyti ofivpoIo — _z�-______ , - � �x 0 _'� .41k, �_ -':z��- !�n'* p 00. 'w �� 00 -I% 1%, --ti�� 121 " "� / --- a, )<---\, , "w v -1 / 11 -1 10, .9. JOHN .. MAW 11 11 �& ...'t 9 -.T� r_.) & -$- 16 & '& THIS SHEET TO BE USED FOR EROSION & Uc. No. 19 8 It, AND SILTATION CONTROL ONLY M.1!!11! I& S /1 /V IS, .IV I _�21 N 0 12, � -000-%.;s' !�� 00000 000w wk%N ENGINEERING GROUPE PROJECT STATUS DATE: 04/18/07 7-27-06 GENERAL REVISIONS SCALE: 1 "=50p 10-1-06 GENERAL REVISIONS — 4-18-07 REVISED PER COUNTY COMMENTS DESIGNER: L.R. D.M.P. 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSMAN...., L.R./D.M.P. 10-9-09 REVISED PER COUNTY COMMENTS FILE NO, SP -027F DATE - ACTION SHEET 7 OF 12 �MOJF_k, I XDI ICH VVrTJd'\F_I!u'\u"u+Mt, P131 i�00-Muuu.dvvy, tit 172-utu 1:51:13 co ! I � P4 ; ; ' M : : i ; i =-! 1 A., I i i I 1 - P4 ' �� P-4 = C 0-1 4- �,� '4 0 = CD I P� I-4 --!� - �. E-4 T_.,I P:� E --i Z C) u = E- I. -I �cn 0 u E-4 z T__� 1 �� pq �111 — '!!� -.,!!4 04 � . WI, = z �> j pq I-4 U) P; P4 .4 ul 86 ;4 z v -2 0 _<�0-4 M z c) 44 04— lyti ofivpoIo — _z�-______ , - � �x 0 _'� .41k, �_ -':z��- !�n'* p 00. 'w �� 00 -I% 1%, --ti�� 121 " "� / --- a, )<---\, , "w v -1 / 11 -1 10, .9. JOHN .. MAW 11 11 �& ...'t 9 -.T� r_.) & -$- 16 & '& THIS SHEET TO BE USED FOR EROSION & Uc. No. 19 8 It, AND SILTATION CONTROL ONLY M.1!!11! I& S /1 /V IS, .IV I _�21 N 0 12, � -000-%.;s' !�� 00000 000w wk%N ENGINEERING GROUPE PROJECT STATUS DATE: 04/18/07 7-27-06 GENERAL REVISIONS SCALE: 1 "=50p 10-1-06 GENERAL REVISIONS — 4-18-07 REVISED PER COUNTY COMMENTS DESIGNER: L.R. D.M.P. 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSMAN...., L.R./D.M.P. 10-9-09 REVISED PER COUNTY COMMENTS FILE NO, SP -027F DATE - ACTION SHEET 7 OF 12 �MOJF_k, I XDI ICH VVrTJd'\F_I!u'\u"u+Mt, P131 i�00-Muuu.dvvy, tit 172-utu 1:51:13 NOTE: p f FOR ALL INTER.-)ECTION IMPROVEMENTS WITHIN THE ROUTE 29 ROW, 4._ TO THE PREVIOUSLY APPROVED DESIGN BY COLLINS PLEASE REFER ENGINEERING, SIGNED XX/XX/XX, WHICH HAS BEEN ATTACHED TO x THIS SET. THE' E INTERSECTION IMPROVEMENTS WILL BE N CONSTRUCTED BY OTHERS AND IT IS ASSUMED THE WORK WILL BE SLOPES MUST BE 2:1 OR FLATTER. ALL SLOPES STEEPER THAN 3-1 COMPLETED PRIOR TO THE START OF BRIARWOOD DRIVE. ALL x MUST BE PLANTEED WITH A L.OW MAINTENANCE NON—GRASS __j �,q r- r)HNI 6 EX R.O.W. REFER TO E&S NARRATIVE AND VIRGINIA STATE x EROSION & SEDIMENT CONTROL HANDBOOK FOR 4;;� MORE INFORMATION. m 71 x ADDITIONAL SILT FENCE SHALL BE INSTALLED X, 7 -IS EXIST. CA164ELOT C�WE AROUND INDIVIDUAL BUILDING SITES ONCE R/W 7V DOWN HILL SLOPES HAVE BEEN STABILIZED AS j, v, -2- REQUIRED. . .... . . ..... N X. . ......... . . . Z A, 77777`� 411 f A TIL u- X_� if V 0 7 IV x 6 4w L _17 . Ar, A E" K OL L 4, :7.,m ....... 17 T_ k�. P, 1. 1 75 6 V SE32 00 v KX -q, Y' i", ji'll" 4"A �'�v 0-1 R j "'P '3 lw tx\,� \ - g 'pl if X, �5 ki, V t�W 84-� - 4 1 l a 4 4, .......... . . . . .. .. ... ... ... .. ... .... . 4 J , A AN, j SEMEW AM EF40" COMM LEMM NO. ME 11my FILML Ln TEMPORARY STONE 3.02 CONSTRUCTION C) cn CD -d r-� ILI C3 ENTRANCE z I V) LLJ LIJ 3.05 SILT FENCE cn -4 X—X—X z SUPER SILT FENCE xx—xx—xx 3.07 STORM DRAIN 0 INLET PROTEC_nON z 3. 08 CULVERT INLET E Z c) PROTECTION E, cr) 3.09 TEMPORARY LLJ CD CD t - DIVERSION DIKE z 0 TEMPORARY u 3.11 RIGHT—OF—WAY r - DIVERSION z 3.14 TEMPORARY SEDIMENT BASIN 3.18 OUTLET 0 C) PROTECTION 3.20 ROCK CHECK DAM 3.24 STREAM CROSSING cf) 0 3.37 TREES, SHRUBS, VINES AND GROUND COVER 3.3 8 TREE PRESERVATION 0-0-0 AND PROTECTON 3.31 TEMPORARY SEEDING ia� 3.32 PERMANENT SEEDING 3.39 DUST CONTROL U 0 < 0 V) n < 0, 36 DIAMEIER 0 'SEE **LOW MAINTENANCE /VA fo 115 NON—GRASSED GROUND COVER REQUIRED PER VIRGNINA EROSION AND SEIDMENT CONTROL j! fHANDBOOK TABLE 3.37C �_o >< F r A L T_- XL + 1p fTP p so in 'ONTk 7 w > -Fu L �TH A. lilt t itrip r woo V) co cn Ln r omn�! -IJ 00 C) cn CD -d r-� ILI C3 z I V) LLJ LIJ C/� Li cn -4 z z C/O 0 �4 z E Z c) E, cr) �D 0 00 LLJ CD CD t - z 0 u 2: u r - z 0 C) 0 co V) co cn z I V) LLJ LIJ C/� Li z z C/O 0 �4 z E Z c) E, cr) �D 0 00 LLJ 0 z 0 u 2: z 0 0 z cf) 0 00 ia� 0 LLJ Ld U 0 < 0 V) n < < Ld LLI Li III F- U) U) C-) Lj C) 0 LLJ Ld Id Ld Ld Cj,) V) < 0 Cj') co Ln a� V) = >_ ��; > > L) Ld Lij Ld Li n 0:� DE Lr_ Lr Lr 'Q, (D cy) Ld (N 14 0 I 0 u -, C) 100,_ C'A F-) — V A SEO k - L -Ti0N%AG- QE -SSS I -CON STRbr, A 0 -AW 'ENTRANCE LIMITEL)---I,q _e AJ BRIARW00D--QkVE''- t v 'SEE SHEET 6A, 4 X K, A *ALL --,WORK IN EXISTING 4( "ol VD& kIGHT—OF—WAY r� 4F i 4 woo up 14 3;� E_ SUBJECT TO SEPARATE PERM IT. x r PV 1-N < JOHN S. IK :3�, -,f;. -e- dc. No. 4v OT t 19 9 �V D, 2 -FULL,. LtRGTF+-,-- FOk %_ `2, . . . . ... ..... 11,6- Vf-, I Vc Tc 0 % 0000' x '0- 5, 2 0011 401% A _4 GRAPHIC SCALE x, 6 kTUS 7 N, ENGINEERING GROUPE PROJECT ST DATE: 04/18/0 50 N 0 25 50 100 200 7-27—Od GENERAL REVISIONS SCALE: 1 50' y—OUT 10-1-06 GENERAL REVISIONS -TF DIAV�E IN FEET b4 I inch 50 W/TRASH 4-18-07 REVISED PER COUNTY COMMENTS _ DESIGNER: L.R./D.M.P. 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSMAN: L. R. ZD. M. P 10-9-09 —REVISED PER COUNTY COMMENTS FILE NO. SP -027F SHFFT /A�, I I UN 8 Or 1z piapkgg 144999 dwy, 1,1114NWJ 1:50:37 co z E, z C/O 0 �4 z E Z c) E, cr) �D 0 E-1 z z z cf) 0 V A SEO k - L -Ti0N%AG- QE -SSS I -CON STRbr, A 0 -AW 'ENTRANCE LIMITEL)---I,q _e AJ BRIARW00D--QkVE''- t v 'SEE SHEET 6A, 4 X K, A *ALL --,WORK IN EXISTING 4( "ol VD& kIGHT—OF—WAY r� 4F i 4 woo up 14 3;� E_ SUBJECT TO SEPARATE PERM IT. x r PV 1-N < JOHN S. IK :3�, -,f;. -e- dc. No. 4v OT t 19 9 �V D, 2 -FULL,. LtRGTF+-,-- FOk %_ `2, . . . . ... ..... 11,6- Vf-, I Vc Tc 0 % 0000' x '0- 5, 2 0011 401% A _4 GRAPHIC SCALE x, 6 kTUS 7 N, ENGINEERING GROUPE PROJECT ST DATE: 04/18/0 50 N 0 25 50 100 200 7-27—Od GENERAL REVISIONS SCALE: 1 50' y—OUT 10-1-06 GENERAL REVISIONS -TF DIAV�E IN FEET b4 I inch 50 W/TRASH 4-18-07 REVISED PER COUNTY COMMENTS _ DESIGNER: L.R./D.M.P. 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSMAN: L. R. ZD. M. P 10-9-09 —REVISED PER COUNTY COMMENTS FILE NO. SP -027F SHFFT /A�, I I UN 8 Or 1z piapkgg 144999 dwy, 1,1114NWJ 1:50:37 8 EDNE14T AND EFKXNON CONTROL LEGEND NO. 04/18/07 TnLE KEY SYMBOL 3.02 TEMPORARY STONE ONSTRUCTION ENTRANCE CE u P-4 Ln 0 REVISED PER COUNTY COMMENTS cid t 10 3.05 0 u SILT FENCE 8F X—X—X REVISED PER COUNTY COMMENTS SU PER SILT FENCE XX X X x 3.07 ,STORM DRAIN INCET PROTECTION SP -027F 0 3.08 �ULVERT INLET PROTECTION V) Lj-j 3.09 �TEMPORARY DIVERSION DIKE uD 3.11 (TEMPORARY RIGHT—OF—WAY DIVERSION HY 1--- 3.14 TEMPORARY SEDIMENT BASIN 5 3.18 OUTLET PROTECTION :2 -�j -6 3.20 R?CK CHECK DAM CSD O 0 3.24 ST REAM CROSSING o o o 3.37 TREES, SHRUBS, VINES AND GROUND COVER CJ 3.3(9 TREE PRESERVATION ND PROTECTON (-) 0-0-0— 3.31 TEMPORARY SEEDING cn 3.32 PE MANENT SEEDING PS Ps 3.39 UST CONTROL z FLOW ARROW D RAINAG7E DIVIDE 0 > NOTE REFER TO E&S NARRATIVE AND VIRGINIA STATE EROSION SEDIMENT CONTROL HANDBOOK FOR MORE INFORMATION. ADDITIONAL SILT FENCE SHALL BE INSTALLED AROUND INDIVIDUAL� BUILDING SITES ONCE DOWN HILL SLOPES HAVE BEEN STABILIZED AS REQUIRED. Pfl# GRAPHIC SCALE 50 100 ( IN FEET ) I inch = 50 ft CV u- 0 F- uj Ld r V) w Ld V) I UJI z -j NIATCHLINE - SEE SHEET 8 OF 12 32C THIS SHEET TO BE USED FOR EROSION AND SILTATION CONTROL ONLY !!!1!!!! 17 EX. R.O.W. cf)U) DATE: 04/18/07 cn GENERAL REVISIONS 00 00 1"=50'- CD GENERAL REVISIONS u P-4 Ln 0 REVISED PER COUNTY COMMENTS cid t 10 D T. M. R. 0 u a, DRAFTSMAN: L. R. /D. M. 00 REVISED PER COUNTY COMMENTS Ln SP -027F 0 Ld Ld V) Lj-j uD 7; 1--- cq N 5 u U "..' .� > 0 :2 -�j -6 0 O O 0 '71 Ln o o cf)U) DATE: 04/18/07 cn GENERAL REVISIONS SCALE: 1"=50'- 10-1-06 GENERAL REVISIONS I-- 4-18-07 REVISED PER COUNTY COMMENTS DESIGNER: D T. M. R. 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSMAN: L. R. /D. M. 10-9-09 REVISED PER COUNTY COMMENTS • SP -027F DATE I Ld Ld V) Lj-j 7; 1--- Ld :2 ';7Ll '71 o o o CJ C-) :2 (-) cn 2 z 0 > < 0 F-- (n V) 0 cn Z F— < D D m D z 5: 0 0 cl" 0 V) m LLJ ry civ < V) n z < � (Y D' 0 Z LA < (D Ld Ld LLI ld of 7' roll E n D z n q Q w0 0 0 III LLJ LLj lil < 0 cn — cf) — unn — (n — co z: co cf) > > > > O w CL w L'i LLJ L'i L'i o 0 0 x < in 0 m < 00000000 I- 00 00 00 00 0) m 0C-4 LLJ N0— ro I o 1 T < 0 1 1 1 1 o r') 1-0 00 — N n `-0 , ---ITTIT X00®` 000" ENGINEERING GROUPE PROJECT STATUS DATE: 04/18/07 7-27-06 GENERAL REVISIONS SCALE: 1"=50'- 10-1-06 GENERAL REVISIONS 4-18-07 REVISED PER COUNTY COMMENTS DESIGNER: D T. M. R. 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSMAN: L. R. /D. M. 10-9-09 REVISED PER COUNTY COMMENTS • SP -027F DATE I ACTION SHEET 9 OF 12 X00®` 000" ENGINEERING GROUPE PROJECT STATUS DATE: 04/18/07 7-27-06 GENERAL REVISIONS SCALE: 1"=50'- 10-1-06 GENERAL REVISIONS 4-18-07 REVISED PER COUNTY COMMENTS DESIGNER: D T. M. R. 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSMAN: L. R. /D. M. 10-9-09 REVISED PER COUNTY COMMENTS FILE NO. SP -027F DATE I ACTION SHEET 9 OF 12 :22 SEDWN T AND EROSION OONTROIL LEOM cn ME KEY SWADOL co ON TEMPORARY� STONE REVISED PER COUNTY COMMENTS DRAFTSMAN: L.R./D.M.P. 1-u V) F -- 00 FILE NIO. 3.02 CONSTRUC TION 0 SP -027F 00 DATE ACTION ENTRANCE PL4 Li u 3.05 SILT FE CE X—X—X SUPER SIL� FENCE I 2 xx—xx—xx 3.07 STORM D RAIN PROTECTION _a INLET 1-4 u u U "J" 3.08 CULV ET 0 C) PROTECTION o TEMPORj I RY L j C) 3.09 DIVERSION DIKE pp, 3.11 TEMPOF�RY RIGHT-O�-WAY OFN - DIVERSI Oj 3.14 7 TEMPORARY SEDIMENT BASIN 3.181 I OUTLET PROTECTION R 3.20 ROCK CHE�',K DAM A 3.24 STREAM C OSSING < 0 3.37 TREES, SHRUBS, VINES AND GROUND COVER 3.38 TREE PRES�RVATION 0-0-0 AND PRO�ECTON 3.31 TEMPORARY SEEDING 3.32 PERMANENT SEEDING 3.39 DUST COI, TROL ft� 0 LLJ FLOW A DRAINAGE � DIVIDE_ -2 -z 7-- -ORK RIVANNA RIVER NoF1TH F -7 'V� -77- N I E: fSED)l 0 M E c 5 To ONYERTED ----------- A NENT + S�vm Pi of + - - - - - - - - - - D09 i92 ow r ----------------- 7- 6— -RESOUR( -;F PY47ECTM fINV" ffu u ffv— Rcp Ll - ----- �7, oof /* 0 . ......... /* . ...... . . . ..... . .......... 0 ....... . .. - — - - ----- --4 . .. ....... . . . . ...... ..... . . ........... .... F- :7 . ...... ... . . . ... .. . ........ uj D8!VF-, rn .......... . .. .. .... -------- rn v J 1, > 30* Rcp 3u- Rcp rn .. . .... ...... ... - - ----- - rn -Z-1 - --- Air, SMJ� btvv. W (o - ----------- - - - -7' 0 - - - - - - - - - - - 4:-ZZZ::L=:: 7c . .. .... --- - - ---- f .... .. .... ... . ..... cw- — - ------ -- .... ........ 7- .. . . .... ------ . ..... .. . . ...... .. . ... ....... . . .... . - - - -- ----- -- --- . .... .. ...... . I-- - — ----- - ...... - - -- - - - — - -------- --- ... . .. - - - - --------- . . .. . .... . .. . . ......... . . . . .......... . .... .. ..... . . .... ... ... . . ......... . . ..... .. . ...... . .. . - - - - --- ----- F L 11 r. . .. . ..... .... . . L --T 7 . ........ ........ . ..... .... .. 7 -------------- j LAW < ..... . . .... L11 L L '7 4et /0\ 91, X, v- 46" I ;> 4 (7) cn CIO - 00 L * R./D.M.P. co ON 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSMAN: L.R./D.M.P. 1-u V) F -- 00 FILE NIO. 0 SP -027F 00 DATE ACTION SHEET PL4 Li u V) Ld Qi) z I 2 ON :E Ll 1-4 u u U "J" 0 0 C) o o (7) cn REVISED PER COUNTY COMMENTS cn L * R./D.M.P. 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSMAN: L.R./D.M.P. F-- F -- REVISED PER COUNTY COMMENTS FILE NIO. SP -027F DATE ACTION SHEET 10 OF 12 Li V) Ld z I 2 :E Ll o o L j C) - (D V) 0 < 0 < 7' > 0 0 ft� 0 LLJ < -2 < n- Q�: :2i 0 < 0 W W 0 -2 n D- =) D n Q cn U) 0 U 0 C) Ld L.LJ — — LU < (f) cn co cn V) 0 5 Q LL1 L'i bi Li io Li ry cy < < < ,--,coo r- 00 w w o w 0 0 0 T 0 n ob N ro — /A \,v v 2, JOHN NO T- —E: y C REF 0 L & �3 N At-� N A rl Vt- ANU VI Ul I /A �) /A I LNU IUN & SEDIMENT CONTROL HANDBOOK FOR MORE INFORMATION. ADDITIONAL SILT FENCE SHALL BE INSTALLED AROUND INDIVIDUAL BUILDING SITES ONCE DOWN HILL SLOPES HAVE BEEN STABILIZED AS REQUIRED. GRAPHIC SCALE 50 0 25 50 100 200 IN Fm I Inch = 50 tL THIS SHEET TO BE USED FOR EROSION AND SILTATION CONTROL ONLYfl!M!! V-- 0 -000-�%;S� 00000 IONAL ENGINEERING GROUPIE PROJECT STATUS DATE: 04/18/07 7-27-06 GENERAL REVISIONS SCALE: 112=50) 10-1-06 GENERAL REVISIONS 02 4-18-07 REVISED PER COUNTY COMMENTS DESIGNER: L * R./D.M.P. 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSMAN: L.R./D.M.P. 10-9-09 REVISED PER COUNTY COMMENTS FILE NIO. SP -027F DATE ACTION SHEET 10 OF 12 02 SEDUENT AND EROSION CONTROL MEW NO. TnLE KEY SYMBOL TEMPORARY STONE ........ . 3.02 CONSTRUCTION ENTRANCE is 3.05 SILT FENCE X--X—X SUPER SILT FENCE xx--xx—xx 3.07 STORM DRAIN a INLET PROTECTION Lu yzlol - -- 08 CULVERT INLET ' PROTECTION 3.09 TEMPORARY DIVERSION DIKE 0 o TEMPORARY ou 3.11 RIGHT-OF-WAY flY DIVERSION cr) 3.14 TEORARY SEDIMEMPNT BASIN z 3.18 OUTLET PROTECTION 0 =Xal '$fir < 3.20 ROCK CHECK DAM ................ CD 0 3.24 STREAM CROSSING co U cn 3.37 TREES, SHRUBS, VINES AND GROUND COVER < 3.38 TREE PRESERVATION m AND PROTECTON 3.31 TEMPORARY SEEDING Q:� 3.32 PERMANENT SEEDING ps 3.39 DUST CONTROL. 0 0 < FLOW ARROW => DRAINAGE DIVIDIE **LOW MAINTENANCE NON -GRASSED GROUND COVER REQUIRED PER VIRGNINA EROSION AND SEIDMENT CONTROL HANDBOOK TABLE 3.37C 50 - - - - - - - - - - GRAPHIC SCALE ( IN FEET ) 1 inch = 50 !t. 44 + Ft 'z" 200 - -------------- 7__ ----------- NOTE T_ E_: REFER TO E&S NARRATIVE AND VIRGINIA STATE EROSION & SEDIMENT CONTROL HANDBOOK FOR MORE INFORMATION. ADDITIONAL SILT FENCE SHALL BE INSTALLED AROUND INDIVIDUAL BUILDING SITES ONCE DOWN HILL SLOPES HAVE BEEN STABILIZED AS REQUIRED. THIS SHEET TO BE USED FOR EROSION AND SILTATION CONTROL ONLY !!1!!!!! ENGINEERING GROUPE PROJECT STATUS 7-27-061 GENERAL REVISIONS 10-1-06 GENERAL REVISIONS 4-18-07 REVISED PER COUNTY COMMENTS 7-20-07 REVISED PER COUNTY COMMENTS 10-9-09 REVISED PER COUNTY COMMENTS Am ACTION Ili Lalp 0 Eli W, 0 0 00 op 00 X lll�l 4, Q) JOHN S. A SIK Lic. Nc. 1 998 sIr xx DATE: 04/18/07 SCALE: 1"=50' vim FILE NO. SP -027F SHEET 10A OF 12 0 Lu 0 0 o ou 0u cr) z 0 > < 0 0 co U cn < m > 00 Q:� 0 Li Li 0 0 < u => < a-- m S 5 W < >- W LJ W LJ 0 :2 cc) :07 H- n a- a- D z (2) C) 0 Q co U) U 0 0 LLJ W LJ l L.Li (A cn < U) U) (n U) � ") :r w 5; Ld CL LLJ L'i III L'i r-) ft� < 00000000 F_ 00 co 00 w m 0) I 0 I I I I I I I Lli — r- 0 -;I- - j!;7 N I I CD - I I I C) In CN ro. - 0 O I . ........ .... . z Ili Lalp 0 Eli W, 0 0 00 op 00 X lll�l 4, Q) JOHN S. A SIK Lic. Nc. 1 998 sIr xx DATE: 04/18/07 SCALE: 1"=50' vim FILE NO. SP -027F SHEET 10A OF 12 0 SEDIMENT BASIN SHEMAI ELEVATIONS Eiev.=40872 DESIGN HIGH WATER SEDIMENT CLrANOUT � POINT �� SCHEMATIC � r�� SEDIMENT �� /� �� /�� _E L_ E VA TIONS E(ev,=419.91 �� l� ��l�� l��l��l�� ]JL��l� ELEVATIONS WITHOUT EMERGENCY SPILLWAY � (RISER PASSES 35 -YR. EVENT) SEDIMENT BASIN 1 TEMPORARY SEDIMENT� BASIN DESIGN DATA SHEET DEWATERINGPROJECT E BASIN # TOTAL AREA DRAINING TO BASIN: 8.17 ACRES. WET STORAGE: 1. MINIMUM REQUIR�D VOLUME = 67 CU. YDS. X TOTAL DRAINAGE AREA (ACRES). 2. AVAILABLE 13ASIN VOLUME = 550 CU, YDS. AT ELEVATION 404.04 FT 3. EXCAVATE 550 CU. YDS. TO OBTAIN REQUIRED VOLUME*. * ELEVATION CORRESPONDING 'TO REQUIRED VOLUME = INVERT OF THE COLLARS4. AVAILABLE �OLUME BEFORE CLEANOUT REQUIRED. 5. ELEVATION CORRESPONDING TO CLEANOUT LEVEL = 403.04 FT. 6. DISTANCE FROM INVERT OF THE DIEWATERING ORIFICE TO CLEANOUT LEVEL = 1.00 FT. DRY STORAGE: 7. MINIMUM REQUIRED VOLUME = 67 CU. YDS. X TOTAL DRAINAGE AREA (ACRES). 8. TOTAL AVAILABLE BASIN VOLUME AT CREST OF RISER* = 1095 CU. YDS. AT ELEVATION 4 0572 *MINIMUM = 134 CU. YDS./ACRE OF TOTAL DRAINAGE AREA. 1095 CU. YDS, 9, DIAMETER OF DEWATERING ORIFICE = 4" 10. DIAMETER OF FLE -XIBLE TUBING = 6" PRELIMINARY DESIGN ELEVATIONS 11. CREST OF RISER�= 405.72 TOP OF DAM = 408,72 DESIGN OF HIGH WATER 406.72 UPSTREAM 'FOE OF DAM 402.00 BASIN SHAPE EFFECTIVE �IDTH W 101.2' BAFFLES REQUIRED. RUNOFF 15. WITHOUT EMERGENCY SPILLWAY, REQUIRED SPILLWAY DESIGN HIGH WATER ASSUMED AVAILABLE HEAD (h) = I FT. (USING Q25) cn h = DESIGN 'HIGH WATER ELEVATION - CREST OF RISER ELEVATION 17. RISER DIAMETER �(Dr) = 42 IN, ACTUAL HEAD (h) = 1 FT, co LD' MIN. 0.5 CD r - CD HEAD (H) OIN BARREL THROUGH EMBANKMENT 5.22 FT. 4-4 19. BARREL DIAMETER = 30 IN. CMP (FROM PLATE 3.14-B [METAL PIPE]. � m9 20. TRASH RACK AND ANTI -VORTEX DEVICE DIAMETER =� 54 INCHES. thi IDEWATERING o � w� EMERGENCY SPILLWAY�DESIGN - N/A DEVICE E. 22. BOTTOM WID�H (b) = 0 ft; THE SLOPE OF THE EXIT CHANNEL (s) .00 ft/ft.; 0�'� AND THE MINIMUM LENGTH OF THE EXIT CHANNEL (x) = 0 ft. Inv In=402,00 Inv Out=401,50 1 30' CMP @ 1,19% SEDIMENT CIL NOUT POINT �� l� ��l�� l��l��l�� ]JL��l� ELEVATIONS WITHOUT EMERGENCY SPILLWAY � (RISER PASSES 35 -YR. EVENT) SEDIMENT BASIN 1 TEMPORARY SEDIMENT� BASIN DESIGN DATA SHEET DEWATERINGPROJECT E BASIN # TOTAL AREA DRAINING TO BASIN: 8.17 ACRES. WET STORAGE: 1. MINIMUM REQUIR�D VOLUME = 67 CU. YDS. X TOTAL DRAINAGE AREA (ACRES). 2. AVAILABLE 13ASIN VOLUME = 550 CU, YDS. AT ELEVATION 404.04 FT 3. EXCAVATE 550 CU. YDS. TO OBTAIN REQUIRED VOLUME*. * ELEVATION CORRESPONDING 'TO REQUIRED VOLUME = INVERT OF THE COLLARS4. AVAILABLE �OLUME BEFORE CLEANOUT REQUIRED. 5. ELEVATION CORRESPONDING TO CLEANOUT LEVEL = 403.04 FT. 6. DISTANCE FROM INVERT OF THE DIEWATERING ORIFICE TO CLEANOUT LEVEL = 1.00 FT. DRY STORAGE: 7. MINIMUM REQUIRED VOLUME = 67 CU. YDS. X TOTAL DRAINAGE AREA (ACRES). 8. TOTAL AVAILABLE BASIN VOLUME AT CREST OF RISER* = 1095 CU. YDS. AT ELEVATION 4 0572 *MINIMUM = 134 CU. YDS./ACRE OF TOTAL DRAINAGE AREA. 1095 CU. YDS, 9, DIAMETER OF DEWATERING ORIFICE = 4" 10. DIAMETER OF FLE -XIBLE TUBING = 6" PRELIMINARY DESIGN ELEVATIONS 11. CREST OF RISER�= 405.72 TOP OF DAM = 408,72 DESIGN OF HIGH WATER 406.72 UPSTREAM 'FOE OF DAM 402.00 BASIN SHAPE EFFECTIVE �IDTH W 101.2' BAFFLES REQUIRED. RUNOFF 15. WITHOUT EMERGENCY SPILLWAY, REQUIRED SPILLWAY CAPACITY Qp = Q25 33.09 CFS. 16. ASSUMED AVAILABLE HEAD (h) = I FT. (USING Q25) cn h = DESIGN 'HIGH WATER ELEVATION - CREST OF RISER ELEVATION 17. RISER DIAMETER �(Dr) = 42 IN, ACTUAL HEAD (h) = 1 FT, co NOTE: AVOID ORIFICE FLOW CONDITIONS. CD r - CD HEAD (H) OIN BARREL THROUGH EMBANKMENT 5.22 FT. 4-4 19. BARREL DIAMETER = 30 IN. CMP (FROM PLATE 3.14-B [METAL PIPE]. � m9 20. TRASH RACK AND ANTI -VORTEX DEVICE DIAMETER =� 54 INCHES. thi HEIGHT = 117 INCHES. o � w� EMERGENCY SPILLWAY�DESIGN - N/A E. 22. BOTTOM WID�H (b) = 0 ft; THE SLOPE OF THE EXIT CHANNEL (s) .00 ft/ft.; 0�'� AND THE MINIMUM LENGTH OF THE EXIT CHANNEL (x) = 0 ft. . . � @ 3.0/ x 3.0' DESIGN HIGH WATER 406.72 EMERGENCY SPILLWAY N/A PRINCIPAL GIPILLWAY CREST 405.72 DIEWATERIN ORIFICE INVERT 404.04 CLEANOUT ELEVATION 403.04 UPSTREAM TCE OF DAM 402.00 SOURCE: VA EROSION AND SEDIMENT CONTROL HANDBOOK, 1992 MIN, J. 0, .91 Eiev/=414,81 -`---DEWATERING DEVICE Inv In=412.00 Inv Out=406.00 21^ CMP @ 10.0% ��7� ��l�� l��l�� ]JL��l� ELEVATIONS WITHOUT ��J��T �� EMERGENCY SPILLWAY (RISER PASSES 25 -TR' EVENT) SEDIM��[-F�|&�[�KJ7- [�^��|hJ '� ENT ��||n �� TEMPORARY SEDIMENT BASIN DESIGN DATA SHEET PROJECT BRAAIWD{DL BASIN # 2 TOTAL AREA DRAINING TO BASIN: 6.55 ACRES. BASIN VOLUME DESIGN WET STORAGE 1. MINIMUM REQUIRED VOLUME = 67 CU. YDS. X TOTAL DRAINAGE AREA (ACRES). 07 CU. YDS. X 6.55 ACRES = 438.85 CU. YD3, 2� AVAILABLE BASIN VOLUME = 440 CU. YDS. AT ELEVATION 414.81 FT, 3. EXCAVATE 800 CU. YDS. TO OBTAIN REQUIRED VOLUME*. * ELEVATION CORRESPONDING TO REQUIRED VOLUME = INVERT OF THE DEWATERING ORIFICE. 4. AVAILABLE VOLUME BEFORE CLEANOUT REQUIRED. 34 CU. YDS. X 8.55 ACRES ~~ 222.70 CU. YDS. 5. ELEVATION CORRESPONDING TO CLEANOUT LEVEL = 413.56 6. DISTANCE FROM INVERT OF THE DEWATERING ORIFICE TO CLEANOUT LEVEL = 1.25 FT DRY STORAGE: 7. MINIMUM REQUIRED VOLUME = 87 CU. YDS. X TOTAL DRAINAGE AREA (ACRES). 87 CU. YDS. X 8.55 ACRES ~~ 438.85 CU. YDS. 8. TOTAL AVAILABLE BASIN VOLUME AT CREST OF RISER* = 877.70 CU. YDS. AT ELEVATION 418.91 *MINIMUM = 134 CU. YDS./ACRE OF TOTAL DRAINAGE AREA. = 877.70 CU. YDS. Q. DIAMETER OF DEWATERING ORIFICE = 4" 10. DIAMETER OF FLEXIBLE TUBING ~~ 8" PRELIMINARY DESIGN ELEVATIONS 11. CREST OF RISER ~~ 418'91 TOP OF DAM = 418'91 DESIGN OF HIGH WATER = 417.91 UPSTREAM TOE OF DAM = 412.00 BASIN SHAPE 12. LENGTH OF FLOW L= {�3.5{' = 1.39 EFFECTIVE WIDTH VV 60.18' BAFFLES REQUIRED. RUNOFF 15, U2 = 18.01 CFS (Q=C|A~~O.5Ox5.5x8.55AC) 14. U25 = 26.53 CFS /Q=C|A-8.5Ux8.1x6.55AC\ PRINCIPAL SPILLWAY DESIGN 15. WITHOUT EMERGENCY SPILLWAY, REQUIRED SPILLWAY CAPACITY Qo = Q25 = 26.53 CFS 16. ASSUMED AVAILABLE H = 1 FT (USING Q25) h = DESIGN HIGH WATER ELEVATION - CREST OF RISER ELEVATION 17. RISER DIAMETER (Dr) = 38 IN. ACTUAL HEAD (h) = 1 FT. (FROM PLATE 3.14-8.) NOTE: AVOID ORIFICE FLOW CONDITIONS. 18. BARREL LENGTH (L) ~~ 60 F'[ HEAD (H) ON BARREL THROUGH EMBANKMENT = 11.91 FT. (FROM PLATE 3.14-7l 19. BARREL DIAMETER = 21 IN. CWP (FROM PLATE 3.14-A [METAL P|PE]. 20. TRASH RACK AND ANTI -VORTEX DEVICE: N/A DIAMETER = 54 INCHES. HEIGHT = 17 INCHES. EMERGENCY SPILLWAY DESIGN - N/A - 21. REQUIRED SPILLWAY CAPACITY Qo = Q25-Qp = O CFS 22. BOTTOM WIDTH (b) = O ft; THE SLOPE OF THE EXIT CHANNEL /s\ .00 ft/ft.; AND THE MINIMUM LENGTH OF THE EXIT CHANNEL (x) = O ft. /FROM TABLE 3.14-C\ FINAL DESIGN ELEVATION DESIGN HIGH WATER = 417.01 EMERGENCY SPILLWAY ~~ N/A PRINCIPAL SPILLWAY CREST = 418.81 DEWATERING ORIFICE INVERT 414.81 CLEANOUT ELEVATION = 413.59 UPSTREAM TOE OF DAM = 412.00 SOURCE: VA EROSION AND SEDIMENT CONTROL HANDBOOK, 1992 �� SCHEMATIC � SEDIMENT �[�r-� /�� / � _� �� / �� 0 � �-� �� /�/� �� "��, ��^��r��ELEVATIONS SEDIMENT CLEANOUT POINT FOLLOWING STABILIZATION OF UPSTREAM AREAS AND' AS ALLOWED BY ALBEMARLE COUNTY INSPECTOR, THE RISER STRUCTURE IS TO BE CONVERTED TO A PERMANENT SWM RISER IN ACCORDANCE WITH THE DETAIL ON SHEET 10B OF THE 3WW PLANS. Eiev.=412.08 MIN. �2, 0' _T i I/ 1MVIN. J. 0' Etev, =408.78 F�ISER_QRE�T Wet Vo(, DEWATERING DEVICE -linv In --- =404,00 Inv Ou�=396,49 ��J ELEVATIONS ��Tqp ��]��l� ��8^�� l�`] WITHOUT KZ��T��7 SPILLWAY �� 7 EMERGENCY �]� �� (RISER PASSES 25 -YR. EVENT) SEDIM��[�[�|K�[�KJ7- [��|KJ �� ENT ��rx.�||n �� TEMPORARY SEDIMENT BASIN DESIGN DATA SHEET SB #3 TO BE CONVERTED TO INTERIM SWM POND PROJECT BRIAJRVOOD BASIN # 3 - TOTAL AREA DRAINING TO BASIN: 9.09� ACRES. BASI.N.-VOLUME DESIGN WET STORAGE: 1. MINIMUM REQUIRED VOLUME = 87 CU. YDS. X TOTAL DRAINAGE AREA (ACRES). 67 CU. YDS. X 9.09 ACRES = 809,03 CU. YDS. ' ' 2. AVAILABLE BASIN VOLUME = 610 CU. YDS. AT ELEVATION 486.74 FT 3. EXCAVATE 610 CU, YDS, TO OBTAIN REQUIRED VOLUME*. * ELEVATION CORRESPONDING TO REQUIRED VOLUME ~~ INVERT OF THE DEWATERING ORIFICE. 4. AVAILABLE VOLUME BEFORE CLEANOUT REQUIRED. 34 CU. YDS. X 9.09 ACRES = 309.06 CU. YDS. 5. ELEVATION CORRESPONDING TO CLEANOUT LEVEL = 405.50 6. DISTANCE FROM INVERT OF THE DEWATERING ORIFICE TO CLEANOUT LEVEL = 1.24 F[ DRY STORAGE: 7. W|N|WUW REQUIRED VOLUME = 07 CU. YDS. X TOTAL DRAINAGE AREA (ACRES), 67 CU. YDS. X 9.09 ACRES = 609.03 CU. YDS. ` ' O. 'TOTAL AVAILABLE BASIN VOLUME AT CREST OF RISER* = 897-80 CU. YDS. AT ELEVATION 408.78 *MINIMUM = 134 CU. YDS. /ACRE OF TOTAL DRAINAGE AREA. = 1218'06 CU. YDS, 8. DIAMETER OF DEWATERING ORIFICE ~~ 4^ 10. DIAMETER OF FLEXIBLE TUBING ~~ G^ PRELIMINARY DES.IGN EL VATIONS 11. CREST OF RISER 408.78 TDP OF DAM = 412.00 DESIGN OF HIGH WATER = 409.78 UPSTREAM TOE OF DAM = 404.80 BASIN SHAPE 12. LENGTH OF FLOW L ~~ 102.20. ~~ 1.42 EFFECTIVE WIDTH VV 71-92' BAFFLES REQUIRED. RUNOFF 13. Q2 ~^ 25.00 CFS (O=C|A=O.50x5.5x0.O9AC) 14. Q25 = 36.81 CFS (Q=C|A-0.5Ox8.1x9.09AC) PRINCIPAL SPILLWAY DESIGN 15. WITHOUT EMERGENCY SPILLWAY, REQUIRED SPILLWAY CAPACITY Up = Q25 = 36.81 CFS. 16. ASSUMED AVAILABLE H = 1 F[ (USING Q25) h = DESIGN HIGH WATER ELEVATION - CREST OF RISER ELEVATION 17. RISER DIAMETER r) = 48 IN. ACTUAL HEAD /h\ = 1 FT. (FROM PLATE 3,14-8.) NOTE: AVOID ORIFICE FLOW CONDITIONS. lR. BARREL LENGTH /L\ = 65 F[ HEAD (H) ON BARREL THROUGH EMBANKMENT = 12.78 FT. (FROM PLATE 3.14-7). 19. BARREL DIAMETER = 24 IN. CWP (FROM PLATE 3.14-A[METAL P|PEl 20. TRASH RACK AND ANTI -VORTEX DEVICE DIAMETER = 72 INCHES. HEIGHT = 21 INCHES. EMERGENCY_SPILLWAY DESIGN - /v/^ 21. REQUIRED SPILLWAY CAPACITY Ue = Q25 -0p = O CFS 22. BOTTOM WIDTH (b) = 0 ft; THE SLOPE OF THE EXIT CHANNEL (n) .00 ft/ft.; AND THE MINIMUM LENGTH OF THE EXIT CHANNEL /xl = O ft. (FROM TABLE 3.14-C) FINAL DESIGN ELEVATIONS 21, TOP OF DAM = 412.00 [DESIGN HIGH WATER ~~ 400.78 EMERGENCY SPILLWAY = N/A PRINCIPAL SPILLWAY CREST 408.78 DEWATERING ORIFICE INVERT = 408,74 CLEANOUT ELEVATION = 405.50 UPSTREAM TOE OF DAM = 404.00 SOURCE: V4 EROSION AND SEDIMENT CONTROL HANDBOOK, 1992 �� SCHEMATIC � �� SEDIMENT _� �� /�� 0 � �� /�� z� � � � � ��~��` ��~��r��u.�ELE VA TIONS SEDIMENT 4MI)�20' MIN, J 0 V. Inv In= 482.00 Inv Out= 398.00 30" CMP @ 4.60% ��3 ELEVATIONS ��qP��T�� u��1� �� ±��JL��l��] WITHOUT ��J��7 SPILLWAY �� 7 EMERGENCY �� (RISER PASSES 25 -TB' EVENT) TEMPORARY SEDIMENT BASIN DESIGN DATA SHEET PROJECT BRIzARW}{DL BASIN # 4 TOTAL AREA DRAINING TO BASIN: 10.80 ACRES. BASIN VOLUME DESIGN WET STORAGE: 1, W|N|WUW REQUIRED VOLUME = 67 CU. YDS. X TOTAL DRAINAGE AREA (ACRES). 87 CU. YD3, X 10.80 ACRES = 723.80 CU. YDS. ` ' 2. AVAILABLE BASIN VOLUME = 723.60 CU. YDS. AT ELEVATION 409.05 FT 3. EXCAVATE 723.60 CU. YDS. TO OBTAIN REQUIRED VOLUME*. * ELEVATION CORRESPONDING TO REQUIRED VOLUME = INVERT OF THE DEWATERING ORIFICE. 4. AVAILABLE VOLUME BEFORE CLEANOUT REQUIRED. 34 CU. YDS. X 10.80 ACRES = 367.20 CU. YDS. 5. ELEVATION CORRESPONDING TO CLEANOUT LEVEL = 406.71 O. DISTANCE FROM INVERT OF THE DEWATERING ORIFICE TO CLEANOUT LEVEL = 2.34 FT DRY STORAGE: 7. MINIMUM REQUIRED VOLUME = 87 CU, YDS. X TOTAL DRAINAGE AREA (ACRES\ 67 CU. YDS. X 10.80 ACRES = 723.80 CU. YDS. (ACRES). 8. TOTAL AVAILABLE BASIN VOLUME AT CREST OF RISER* = 1447.20 CU YDS AT ELEVATION 409.05 � ' *MINIMUM = 134 CU. YDS./ACRE OF TOTAL DRAINAGE AREA, = 1447�28 CU YDS Q. D|AWETER OF DEWATERING ORIFICE ~~ 4'' � , 10. DIAMETER DFFLEX|BLE TUBING = S^ PRELIMINARY DESIGN ELEVATIONS 11. CREST OF RISER 412.32 TOP OF DAM = 415.32 DESIGN OF HIGH WATER = 413.32 UPSTREAM TOE OF DAM = 402.80 BASIN SHAPE /2 ' ' � = Q{� EFFECTIVE WIDTH VV 81.40' BAFFLES REQUIRED. RUNOFF 13. Q2 = 29.70 CFS U=C|A=0.5Ox5.5x10.80AC) PRINCIPAL SPILLWAY DESIGN 15. WITHOUT EMERGENCY SP|LLWAY, REQUIRED SPILLWAY CAPACITY Qp = Q25 = 43.74 CFS 16. ASSUMED AVAILABLE H = 1 FT l (USING �2�� h = DESIGN HIGH WATER ELEVATION - CREST' RISER ELEVATION 17. RISER DIMENSION ( = 54^ ) = 1 FT NOTE: AVOID ORIFICE FLOW CONDITIONS. 18. BARREL LENGTH (L) ~~ 87 FT. HEAD (H) ON BARREL THROUGH EMBANKMENT ~~ 15.32 F-[ (FROM PLATE 3.14-7). lA' BARREL DIAMETER = JO IN. CMP (FROM PLATE 3.14-8`'ETAL P|PEl 20. TRASH RACK AND ANTI -VORTEX DEVICE DIAMETER = 78 INCHES HEIGHT = 25 INCHES. EMERGENCY SPILLWAY_ DESIGN - N/A 21. REQUIRED SPILLWAY CAPACITY Qe = O25-Qp = O CFS 22. BOTTOM WIDTH /b\ = O ft; THE SLOPE OF THE EXIT CHANNEL�a) �OO ft/ft.; AND THE MINIMUM LENGTH OF THE EXIT CHANNEL (x) = D ft.` ' ' ` (FROM TABLE 3.14-C) ` ' FINAL DESIGN ELEVATIONS 2/� TOP OF u*w = 415.32 DESIGN HIGH WATER 413.32 EMERGENCY SPILLWAY = N/A PRINCIPAL SPILLWAY CREST ~^ 412.32 DEWATERING ORIFICE INVERT = 409.05 CLEANOUT ELEVATION = 486.71 UPSTREAM TOE OF DAM = 402.00 SOURCE: VA EROSION AND SEDIMENT CONTROL HANDBOOK. 1992 NOTE PLANS FOR FINAL SEDUM BASIN FISER DESKK ENGINEERING GROUPIE PROJECT STATUS DATE: 04/18/07 7-27-06 GENERAL REVISIONS SCALE: N/A NOTE- 10-1-06 GENERAL REVISIONS FEFr=R TO THE SWM PLANS FOR BMANKM�T 4-18-07 REVISED PER COUNTY COMMENTS DESIGNER: L.R. PROFL.ES WITH GEOTECH FEWMAENM. 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSMAN: L.R. FILE NO. SP -027F DATE ACTION SHEET 11 OF 12 00 00 CC) ON cn bz co 4-4 CD r - CD P-4 � 4-4 � m9 - thi o � w� � E. 0�'� � . . � CD 00 Ln Li on no NOTE PLANS FOR FINAL SEDUM BASIN FISER DESKK ENGINEERING GROUPIE PROJECT STATUS DATE: 04/18/07 7-27-06 GENERAL REVISIONS SCALE: N/A NOTE- 10-1-06 GENERAL REVISIONS FEFr=R TO THE SWM PLANS FOR BMANKM�T 4-18-07 REVISED PER COUNTY COMMENTS DESIGNER: L.R. PROFL.ES WITH GEOTECH FEWMAENM. 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSMAN: L.R. FILE NO. SP -027F DATE ACTION SHEET 11 OF 12 CC) cn E. � . . � Li on no ! w [4 C14 �� NOTE PLANS FOR FINAL SEDUM BASIN FISER DESKK ENGINEERING GROUPIE PROJECT STATUS DATE: 04/18/07 7-27-06 GENERAL REVISIONS SCALE: N/A NOTE- 10-1-06 GENERAL REVISIONS FEFr=R TO THE SWM PLANS FOR BMANKM�T 4-18-07 REVISED PER COUNTY COMMENTS DESIGNER: L.R. PROFL.ES WITH GEOTECH FEWMAENM. 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSMAN: L.R. FILE NO. SP -027F DATE ACTION SHEET 11 OF 12 CC) cn E. � . . � ! [4 �� NOTE PLANS FOR FINAL SEDUM BASIN FISER DESKK ENGINEERING GROUPIE PROJECT STATUS DATE: 04/18/07 7-27-06 GENERAL REVISIONS SCALE: N/A NOTE- 10-1-06 GENERAL REVISIONS FEFr=R TO THE SWM PLANS FOR BMANKM�T 4-18-07 REVISED PER COUNTY COMMENTS DESIGNER: L.R. PROFL.ES WITH GEOTECH FEWMAENM. 7-20-07 REVISED PER COUNTY COMMENTS DRAFTSMAN: L.R. FILE NO. SP -027F DATE ACTION SHEET 11 OF 12 SEDIMEN, T BASIN SCHEMA TIC ELE V.A.. TIONS ' DESIGN HIGH WATER (25 -YR. STORM ELEV.) V Etev,=406,9 .........MIN. Q.5'� _ 67 C.Y./ AC. DRY " STORAGE ,... _ Q 67 C.Y./ AC. WET STORAGE ...... SEDIMENT CLEANOUT POINT 4'x4' RISER STRUCTURE. SEE DETAIL FROM SWM PLANS SHEET 15. RISER TOP ELEV. TO BE LOWERED BY 2.0' FROM EL.=405.0 TO EL.=403.0 WITH CONVERSION OF SB#5 TO PERMANENT SWM POND #3. MIN. 1.0-' )KEME MIN. 1.0 "r -j ENCY SPILLWAY Etev,=406,2* -Dry Vot, Elev,=405,0 Wet Vol, Etev,=401,50 DEWATERING DEVICE Inv In=396,75 Inv ❑ut=396,50 30' RCP @ 0,5% * EMERGENCY SPILLWAY TO BE LOWERED BY 2.2' FROM EL=406.2 TO ELEV=404.0 AT SUCH TIME THE FACILITY IS CONVERTED TO A PERMANENT SWM POND #3, SHEET SHEET 15 OF SWM PLANS FOR POND #3 FINAL DESIGN, DESIGN ELEVATIONS WITH EMERGENCY SPILLWAY SEDIMENT BASIN 5 (PERMANENT SWM POND#3) TEMPORARY SEDIMENIT BASIN DES! GI'; DATA SHEET (SB #5 TO BE CONVERTED TO PERMANENT SWM POND #3) WITH EMERGENCY SPILLWAY, REQUIRED SPILLWAY CAPACITY Qp PROJECT BRIARWOOID 16, BASIN # 5 TOTAL AREA DRAINING TO BASIN: 17.50 ACRES. h = DESIGN HIGH WATER ELEVATION - CREST OF RISER ELEVATION BASIN VOLUME DESIGN RISER DIAMETER (Dr) = 54 IN*. ACTUAL HEAD (h) = 1.2 FT. WET STORAGE: 1. MINIMUM REQUIRED VOLUME = 67 CU. YDS. X TOTAL DRAINAGE AREA (ACRES). 67 CU. YDS. X 17.50 ACRES = 1173 CU. YDS. NOTE: AVOID ORIFICE FLOW CONDITIONS. 2, AVAILABLE BASIN VOLUME -= 1218 CU. YDS. AT ELEVATION 401.50 FT. 3. EXCAVATE 1370 CU, YDS, TO OBTAIN REQUIRED VOLUME*. BARREL LENGTH (L) = 51 FT. * ELEVATION CORRESPONDING TO REQUIRED VOLUME = INVERT OF THE DEWATERING ORIFICE. wLr) 4. AVAILABLE VOLUME BEFORE CLEANOUT REQUIRED. (FROM PLATE 3.14-7), 34 CU. YDS. X 17.50 AC! '.ES = 595.0 CU. YDS. 19. 5. ELEVATION CORRESPONDING TO CLEANOUT LEVEL = 399.50 6. DISTANCE FROM INVERT nF THE DEWATERING ORIFICE TO CLEANOUT LEVEL = 2.0 FT. DRY STORAGE: w 7. MINIMUM REQUIRED VOLUME = 67 CU. YDS. X TOTAL DRAINAGE AREA (ACRES). 67 CU. YDS. X 17.50 ACRES = 1173 CU. YDS. v 8, TOTAL AVAILABLE BASIN VOLUME AT CREST OF RISER* = 2576 CU. YDS. AT ELEVATION 405.0* I *MINIMUM = 134 CU. YDS./ACRE OF TOTAL DRAINAGE AREA. = 2345 CU. YDS, 9. DIAMETER OF DEWATERING ORIFICE = 6" 22. 10. DIAMETER OF FLEXIBLE TUBING = 8" (s) 3.4%; PRELIMINARY DESIGN ELEVATIONS AND THE MINIMUM LENGTH OF THE EXIT CHANNEL (x) = 41 ft. 11. CREST OF RISER = 405.0* *CONTRACTOR TO PROVIDE 2.0' TOP OF DAM = 408.10 CONCRETE RISER PIECE TO DESIGN OF HIGH WATER = 406.9 POND RISER STRUCTURE TO UPSTREAM TOE OF DAM = 397.00 RAISE THE DRY STORAGE ELEVATION TO 405.0 DURING BASIN SHAPE CONSTRUCTION. FOLLOWING 12. LENGTH OF FLOW L = 142' 2.05 SITE STABILIZATION, 2.0' RISER EFFECTIVE 'WIDTH W 69.33' PIECE IS TO BE REMOVED SO C� ° ro o ® a THAT THE ULTIMATE CREST OF BAFFLES NOT REQUIRED. RISER = 403.0 PER THE SWM PLANS. RUNOFF 13. Q2 55 CFS (Q=CIA=0.57x5.5xl7.50AC) 14. Q25 81 CFS (Q=CIA=0,57x8.1x17.50AC) PRINCIPAL SPILLWAY DESIGN 15. WITH EMERGENCY SPILLWAY, REQUIRED SPILLWAY CAPACITY Qp = Q2 = 55 CFS, 16, ASSUMED AVAILABLE HEAD (h) = 1 FT. (USING Q2) h = DESIGN HIGH WATER ELEVATION - CREST OF RISER ELEVATION 17. RISER DIAMETER (Dr) = 54 IN*. ACTUAL HEAD (h) = 1.2 FT. *54 IN. DIA IS (FROM PLATE 3.14-8.) EQUIVALENT IN AREA NOTE: AVOID ORIFICE FLOW CONDITIONS. TO A 4'x4' OPENING. 18. BARREL LENGTH (L) = 51 FT. Q I HEAD (H) ON BARREL THROUGH EMBANKMENT = 9.7 FT. wLr) cci (FROM PLATE 3.14-7), 19. BARREL DIAMETER = 30 IN. RCP cn v o (FROM PLATE 3.14-A [PIPE]. w 20. TRASH RACK AND ANTI -VORTEX DEVICE U) v REFER TO SHEET 15 OF 17 SWM PLANS FOR CONSTRUCTION OF PERMANENT TRASH RACK. EMERGENCY SPILLWAY DESIGN I 21. REQUIRED SPILLWAY CAPACITY Qe = Q25-Qp = 26 CFS q�j 22. BOTTOM WIDTH (b) = 24 ft; THE SLOPE OF THE EXIT CHANNEL (s) 3.4%; AND THE MINIMUM LENGTH OF THE EXIT CHANNEL (x) = 41 ft. r-rl (FROM TABLE 3.14-C) FINAL DESIGN ELEVATIONS 23, TOP OF DAM = 408.10 DESIGN HIGH WATER = 406.9 EMERGENCY SPILLWAY = 406.2 PRINCIPAL SPILLWAY CREST 405.0 DEWATERING ORIFICE INVERT 401.50 CLEANOUT ELEVATION = 399.50 UPSTREAM TOE OF DAM = 397.0 SOURCE: VA EROSION AND SEDIMENT CONTROL HANDBOOK, 1992 SEDIMENT BASIN SCHEMATIC ELEVATIONS DESIGN HIGH WATER Etev.=410,00 (25 -YR. STORM ELEV.) -�- Etev,=406,9 MIN. 1.Q' EMERGENCY SPILLWAY MIN. 0.5'� MIN. 1.0' Etev.=408,0* Dry Vot. 67 C.Y./ AC. Etev,=407,0 DRY STORAGE.. RISER CREST 67 C Y. AC. Wet Vol, / Etev,=404,50 " WET STORAGE DEWATERING Y...:f.Y..Y...: DEVICE 1'.'V.V�f��' =•!lfuY+P?YF/?Y '(f' Y,;�'tYr,?,iY{74frY�':4��F�'nc�71Yi7 ' � S, tutu} ff(lY �?? S Ul Y7' } u ......t' . SEDIMENT CL NOUT POINT Inv In=396,75 Inv Out=396,50 30' RCP @ 0,5% 4'x4' RISER STRUCTURE. SEE* EMERGENCY SPILLWAY TO BE LOWERED BY 0.5' FROM DETAIL FROM SWM PLANS SHEET 15.-----/ 5. EL=408.5 TO EL=407.5 AT SUCH TIME THE FACILITY IS RISER TOP ELEV. TO BE LOWERED CONVERTED TO A PERMANENT SWM POND #3. SHEET SHEET BY 1.0' FROM EL.=407.0 TO 17 OF SWM PLANS FOR POND #4 FINAL DESIGN EL.=406.0 WITH CONVERSION OF SB#5 TO PERMANENT SWM POND #3. DESIGN ELEVATIONS WITH EMERGENCY SPILLWAY SEDIMENT BASIN 6 (PERMANENT SWM POND#4) TEMPORARY SEDIMENT BASIN DESIGN DATA SHEET (SB #6 TO BE CONVERTED TO SWM POND #4) PROJECT BRIARWOOD BASIN # 6 TOTAL AREA DRAINING TO BASIN: 14.0 ACRES. BASIN VOLUME DESIGN WET STORAGE: 1. MINIMUM REQUI!ED VOLUME = 67 CU. YDS. X TOTAL DRAINAGE AREA (ACRES). 67 CU, YDS. X 14.0 ACRES = 938 CU. YDS. 2. AVAILABLE BASIN VOLUME = 1051 CU. YDS. AT ELEVATION 404.5 FT. 3. EXCAVATE PER POND 4 PROPOSED GRADING *DO NOT CONSIRUCTED POND 4 EMERGENCY SPILLWAY WITH THIS SEDIMENT BASIN. 4. AVAILABLE VOLIIME BEFORE CLEANOUT REQUIRED. 34 CU, YDS. X 14.0 ACRES = 476 CU. YDS. 5. ELEVATION CORRESPONDING TO CLEANOUT LEVEL = 402.5 FT. 6. DISTANCE FROM INVERT OF THE DEWATERING ORIFICE TO CLEANOUT LEVEL = 2.0 FT. DRY STORAGE: 7. MINIMUM REQUIRED VOLUME = 67 CU. YDS. X TOTAL DRAINAGE AREA (ACRES). 67 CU. YDS. X '14.0 ACRES = 938 Cu. YDS. 8. TOTAL AVAILABLE BASIN VOLUME AT CREST OF RISER* = 1911 CU. YDS. AT ELEVATION 407.0* *MINIMUM = 131 CU. YDS./ACRE OF TOTAL DRAINAGE AREA. = 1876 CU, YDS. 9. DIAMETER OF DEWATERING ORIFICE = 6" 10. DIAMETER OF FLEXIBLE TUBING = 8" PRELIMINARY DESIGN ELEVATIONS 11. CREST OF RISER = 407.0 *CONTRACTOR TO PROVIDE 1.0' TOP OF DAM = 410.0 CONCRETE RISER PIECE TO DESIGN OF HIGH WATER = 408.5 POND RISER STRUCTURE TO UPSTREAM TOE OF DAM = 400.0 RAISE THE DRY STORAGE ELEVATION TO 407.0 DURING BASIN SHAPE CONSTRUCTION, FOLLOWING 12. LENGTH OF FLOW L = 150' SITE STABILIZATION, 1.0' RISER EFFECTIVE WIDTH W = 50' PIECE IS TO BE REMOVED SO THAT THE ULTIMATE CREST OF NO BAFFLES REQUIRED. RISER = 406.0 PER THE SWM PLANS. RUINOFF 13. Q2 46.0 CFS (Q=C!A=0.6Ox5.5x14.OAC) 14. Q25 = 68.0 CFS (Q=CIA=0.6Ox8.1x14.OAC) PRIINCIPAL SPILLWAYDESIGN 15. WITH EMERGENCY SPILLWAY, REQUIRED SPILLWAY CAPACITY Qp = 46.0 CFS, 16. ASSUMED AVAILABLE HEAD (h) = 1 FT. h = DESIGN HIGH WATER ELEVATION - CREST OF RISER ELEVATION 17. RISER DIAMETER (Dr) = 5' X 5' ACTUAL HEAD (h) = 0.9 FT. (FROM PLATE 3.14-8�; USING 72" DIA. WEIR, EQUIVALENT TO A 5' X 5' RISER) NOTE: AVOID ORIFICE FLOW CONDITIONS, 18. BARREL LENGTH (L) = 42 FT. HEAD (H) ON BARREL THROUGH EMBANKMENT = 8.5 FT. (FROM PLATE 3.14-7.) 19. BARREL DIAMETER = 30 IN. RCP 20. TRASH RACK AND ANTI -VORTEX DEVICE SEE POND 4 RISER DETAILS EMERGENCY SPILLWAY DESIGN 21. REQUIRED SPILLWAY CAPACITY Qe = Q25-Qp = 22 CFS 22. BOTTOM WIDTH (b) = 26 ft; THE SLOPE OF THE EXIT CHANNEL (s) 3.6%; AND THE MINIMUM LENGTH OF THE EXIT CHANNEL (x) = 37 ft. (FROM TABLE 3.14-C) ANITI-SEEP COLLAR DESIGN 23. TO BE USED - 2 COLLARS Q 4.6' x 4.6' FINAL DESIGN ELEVATIONS 24, TOP OF DAM = 410.0 DESIGN HIGH WATER = 408.5 EMERGENCY SPILLWAY = 407.9 PRINCIPAL SPILLWAY CREST 407.0 DEWATERING ORIFICE INVERT 404.5 CLEANOUT ELEVATION = 402.5 UPSTREAM TOE OF DAM = 400.0 SOURCE VA EROSION AND SEDIMENT CONTROL HANDBOOK, 1992 ENGINEERING GROUPE PROJECT STATUS 7-27-06 GENERAL REVISIONS 10-1-06 GENERAL REVISIONS 4-18-07 REVISED PER COUNTY COMMENTS 7-20-07 REVISED PER COUNTY COMMENTS Rx 00 00 C\ I- Ln • O 0 c x V) � ' NCo Q I wLr) cci cn v o w I U) v I q�j V u r-rl W V W Q � � v Ln v N oc) 0 W C� ° ro o ® a oc Ln Rx • z w U) i� V W 0 0 W O W U) o 0 Imo- �, QW o > z o z o I �' z � ZD m� z rw Q Q 0 0 w 0 w z U Q 0 m w Z z W LLi W 0 `t j D D a a n 0 wO O � < U 0 n 0 Q Ld v' C (wi} LQ LQ z o > > > Lj w ° w w w w w o o p o 0 n,tr rr Q p p 0 p o o 0 0 0 0 00 co m co Fw- d- N O O Q O N Ki o nO O tb O O z Rx ©p jos., 0®0 00 JOHN S. MA SIK Lic. No. 1, 98 0i J %p t DATE: 04/18/07 SCALE: N A DESIGNER: L.R. DRAFTSMAN: L.R. D.M.P. FILE NO. SP -027F DATE ACTION SHEET 12 OF 12 • i� ©p jos., 0®0 00 JOHN S. MA SIK Lic. No. 1, 98 0i J %p t DATE: 04/18/07 SCALE: N A DESIGNER: L.R. DRAFTSMAN: L.R. D.M.P. FILE NO. SP -027F DATE ACTION SHEET 12 OF 12 l POND #1 POND #3 CAMELO BRIARWOOD DRIVE ROUTE 29 SB SUNSET DRIVE OUTFALL KEY MAP N TS m ADEQUATE OUTFALL NARRATIVE As shown on the above key map, this site drains directly to the North Fork of the Rivannia River along the western and southern boundaries and directly underneath Route 29 along the east side of the site. These hive outfalls were designed and analyzed in accordance with Albemarle County DSM standards for storm water conveyance. In compliance with the adequate outfall ordinance (MS -19), the site does comply since the site contributing drainage area is 0.07% of the overall area drainage area at the point of outfall. (50 acres / 74,240 ac. = 0.00067 = 0.7%) This is well below the 1% threshold. However, to ensure that site runoff is conveyed to the North Fork in accordance with County standards, the submitting engineer has provided computations on this sheet to indicate compliance as summarized here: Pond #1 Q2 = 17 cfs Q10 = 22 cfs The outfall ditch frc)m this pond is designed as a 4' wide riprap channel with 3h:1v side sllopes. Two cross sections are shown. A -A and Al -A1 represent a flatter longitudinal slope and sections A2 -A2 and B -B represent the steeper slope of the channel. Velocities and depths are provided in the table. Pond #2 Q2 = 22 cfs Q10 = 29 cfs The outfall ditch from this pond is designed as a 4' wide riprap channel with 3h:1 v side slopes. this channel will bel installed after SB -3 is removed. Runoff is conveyed from this ditch to an existing 361t culvert that conveys runoff underneath Route 29. There is also an approximate 16.5 acres of additional area that flows to this iculver# for a peak Q25 of 58 cfs total. Based on culvert computations on this sheet, the culvert pipe is adequately sized to convey the 25 -year peak runoff while maintaining a freeboard of at least 18(� below the edgof shoulder. The 2 -year velocity in the pipe is non-erosive. SB#3 The outfall to this temporary facility is via storm sewer pipe flow that connects to an underground storm sewer pipe system underneath Route 29. Computations on this sheet indicate that the existing storm sewer outfall pipe is adequately sized to convey the 10 -year design storm at a non-erosive 2 -year velocity. Pond #3 (rear of ite) Q2 = 21 cfs Q10 = 28 cfs The existing configuration of this outfall ditch from this pond is adequately sized to convey the 10 -year runoff within the bed and banks of the channel, Rip Rap will be added to the exiisting bed and bank confguration to mitigate potential erosive velocities. Pond #4 (rear of Ite) Q2 = 20 cfs Q10 = 27 cfs The outfall ditch from this pond (see sheet 20A) is designed as a 6' wide grouted Rip Rap channel with 2h:1 v side slopes. Velocities and depths are provided in the table below. No adverse impacts downstream are anticipated as a result of the 100 -year storm. Since the onsite runoff is conveyed per County standards to the North Fork and to the Route 29 storm sewer system and the site contributing drainage area to the overall drainage shed is less than 17., it is the ,opinion of the submitting engineer that the outfall is adequate. POND #1 OUTFALL NOTE: ALL OUTFALL DITCHES ARE VDOT STD, CL.I RIP -RAP WITH GEOTEXTILE FABRIC UNDERLAY Flow Control Type: Inlet Control, Submerged SECTION A -A NTS 1C OUTFALL DITCH COMPUTATIONS T SECTION C -C NTS Variable (Unit) POND #2 OUTFALL Pond #2 Pond #3 CULVERT COMPUTATIONS A -A Al -A1 A2 -A2 Existing 36" RCP culvert, n=0.013, ke = 0.05 E -E F -F Inverts Q2 (cfs) 17 Culvert Calculation 17 17 Inlet Invert Elevation: 92.00 ft Discharge: 58.0 cfs Outlet Invert E evation: 90.00 ft Headwater Elevation: 96.63 ft Length: 28 48.00 ft Edge of Shoulder = 98.20 5.00 Slope: 25.00 0.041667 ft/ft 25 -yr freeboard = '1.57 ft. 13.40 66.70 n F 0.035 Tailwater Elevation: 3.00 ft 0.035 0.035 0.035 0.035 Downstream Velocity 18.52 ft/s 4 4 4 4 Downstream Flow D epth:1.37 ft Flow Control Type: Inlet Control, Submerged SECTION A -A NTS 1C OUTFALL DITCH COMPUTATIONS T SECTION C -C NTS Variable (Unit) cc Pond #1 Pond #2 Pond #3 Pond; A -A Al -A1 A2 -A2 B -B C -C D -D E -E F -F G -G Q2 (cfs) 17 17 17 17 22 21 21 21 20 010 (cfs) 22 22 22 22 29 28 28 28 27 Slope(%) U 10.40 5.00 17.00 25.00 6.80 14.80 5.80 13.40 66.70 n F 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.03E Bottom Width (ft) 4 4 4 4 4 3 0 0 6 L Side slope KV 3:1 3:1 3:1 3:1 3:1 3:1 2:1 R Side slope H:V 3:1 3:1 3:1 3:1 3:1 3:1 2:1 d10 (ft) 0.53 0.56 0.46 0.41 0.69 0..62 1.16 1.52 0.29 Flow Area (sf) 2.95 3.18 2.49 2.18 3.43 2..44 3.27 2.11 1.91 dmax (ft) 1.00 1.00 1.00 1.0 1.33 1..00 5.00 8.00 1.00 Qmax (cfs) 74 51 95 115 106 73 1139 2331 232 V2 (fps) 6.89 5.34 8.85 9.32 6.40 8..60 6.41 9.93 12.71 J - n C, r, GRAPHIC SCALE 30 0 15 30 60 120 ( IN FEET ) 1 inch = 30 ft. t r � N OTE: ADD RIP -RAP TP;' CONFIGURATION OF ' EXISTING CH cc - r 00 00 C, r Lq cam® N � Cn P-4 LI) F�/10or rte+ 0 r� 0 r O Ln 4 a 3•-i t r � N OTE: ADD RIP -RAP TP;' CONFIGURATION OF ' EXISTING CH BED & BANKSr t zW O -Q-� V) j L 1 \� o� W 2 pFQ \� o = o -- - - s, \ ^. < o Q _..�_-----y C:_ 'I,MlTS 'OF iCLkAR;INC i &X OR O,,RAQIN'G t _� . IN = M0 �r NOTE: ALL SWM & STM EASEMENTS ;,\RE PUBLIC UNLESS OTHERWISE NOTED SECTION Al --Al N TS 1l .33' I SECTION D -D NTS J r1 All SECTION A2 -A2 NTS d10 = 1.16 SECTION E -E NTS D rY A4 1C SECTION B -B NTS d10 = 1.52 SECTION F -F NTS O Z cc 00 00 C, r Lq cam® N � Cn P-4 LI) rte+ 0 r� 0 r O Ln 4 a 3•-i U a E � � � F � rn o O rrn °'`nNo N N Z 00 W O o0 o rn o �� C) O m BED & BANKSr t zW O -Q-� V) j L 1 \� o� W 2 pFQ \� o = o -- - - s, \ ^. < o Q _..�_-----y C:_ 'I,MlTS 'OF iCLkAR;INC i &X OR O,,RAQIN'G t _� . IN = M0 �r NOTE: ALL SWM & STM EASEMENTS ;,\RE PUBLIC UNLESS OTHERWISE NOTED SECTION Al --Al N TS 1l .33' I SECTION D -D NTS J r1 All SECTION A2 -A2 NTS d10 = 1.16 SECTION E -E NTS D rY A4 1C SECTION B -B NTS d10 = 1.52 SECTION F -F NTS O Z 141 '0- 1�xYa � Q vo0. S13#3 OUTFALL COMPUTATIONS JOHN MA USS Lk. No. 199 THE PIPE OUTFALL TO SEDIMENT BASIN #3 (LOCATED TO THE NORTH OF THE g 0A_ �® I _�, BRIARWOOD DRIVE ENTRNACE OFF OF ROUTE 29) FLOWS DIRECTLY VIA STORM ��r� ��G�� SEWER PIPE 1 -HAT CONVEYS RUNOFF UNDERNEATH ROUTE 29. ss� AS SHOWN IN THE ; 000004w00�' STORM SEWER,! COMPUTATIONS ON SHEET 27 OF THE SITE PLAN, THIS PIPE ENGINEERING GROUPE PROJECT STATUS DATE: 4/18/07 OUTFALL HAS A CAPACITY OF 25 CFS, WHICH IS ADEQUATE TO CONVEY THE 2 4 10 REVISED PER COUNTY COMMENTS REFER TO GRADING PLAN FOR 10 -YEAR DESIGN FLOW OF 10.3 CFS, 12/03/07 REVISED PER COUNTY COMMENTS SCALE: 111=30' X -SECTION AND INSTALLATION 10/09/07 REVISED PER COUNTY COMMENTS DESIGNER: JDT OF RIP -RAP ARMORING OF 09/20/07 REVISED PER COUNTY COMMENTS DRAFTSMAN: JM JAC EXISTING SLOPE DOWNSTREAM 07/20/07 REVISED PER COUNTY COMMENTS FILE NO. FROM POND #4 04/18/071 REVISED PER COUNTY COMMENTS SP -028F DATE I ACTION SHEET 12A OF 12 G:\PROJECT�Briarwood\ENG\DWG\E&SC Plan\OQ-K6202 -ADEQUATE OUTFALL ANALYSiS.dwg, 2/4/2010 9:57:16 cc 4 a >" E-4 � � rn o N Z W 141 '0- 1�xYa � Q vo0. S13#3 OUTFALL COMPUTATIONS JOHN MA USS Lk. No. 199 THE PIPE OUTFALL TO SEDIMENT BASIN #3 (LOCATED TO THE NORTH OF THE g 0A_ �® I _�, BRIARWOOD DRIVE ENTRNACE OFF OF ROUTE 29) FLOWS DIRECTLY VIA STORM ��r� ��G�� SEWER PIPE 1 -HAT CONVEYS RUNOFF UNDERNEATH ROUTE 29. ss� AS SHOWN IN THE ; 000004w00�' STORM SEWER,! COMPUTATIONS ON SHEET 27 OF THE SITE PLAN, THIS PIPE ENGINEERING GROUPE PROJECT STATUS DATE: 4/18/07 OUTFALL HAS A CAPACITY OF 25 CFS, WHICH IS ADEQUATE TO CONVEY THE 2 4 10 REVISED PER COUNTY COMMENTS REFER TO GRADING PLAN FOR 10 -YEAR DESIGN FLOW OF 10.3 CFS, 12/03/07 REVISED PER COUNTY COMMENTS SCALE: 111=30' X -SECTION AND INSTALLATION 10/09/07 REVISED PER COUNTY COMMENTS DESIGNER: JDT OF RIP -RAP ARMORING OF 09/20/07 REVISED PER COUNTY COMMENTS DRAFTSMAN: JM JAC EXISTING SLOPE DOWNSTREAM 07/20/07 REVISED PER COUNTY COMMENTS FILE NO. FROM POND #4 04/18/071 REVISED PER COUNTY COMMENTS SP -028F DATE I ACTION SHEET 12A OF 12 G:\PROJECT�Briarwood\ENG\DWG\E&SC Plan\OQ-K6202 -ADEQUATE OUTFALL ANALYSiS.dwg, 2/4/2010 9:57:16