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HomeMy WebLinkAboutWPO201700065 Plan - VSMP WPO VSMP 2018-01-03' T.M. 78 PARCEL 14C t �6) Soils: (13E) Catoctin Silty Loam (2313) Davidson Clay Loam (71 E) Rabun Clay Loam (88) Udorthnets, loamy Note. The project area is entirely on imported fill and is considered Urban Land. PROPOSED STORMWATER DETENTION SYSTEM W/ 24'x83' STORMWATER MANAGEMENT FACILITY EASEMENT SEE DETAIL 3/C-1.3 LIMIT OF GRADING DISTURBED AREA: 1,375 SQ. FT. _ TEMPORARY SOIL STOCKPILE \ T.M. 78 PARCE \ gROAIQN \ - _ -"_- �= -D.. 39,473 S.F 35,389—S.F IMP. 1 i 9b/ RE—LINE EXISTING CHANNEL WITH CL. 1 RIPRAP ON FILTER FABRIC ` -., ` DRAINA� DIVIDE, TYP.--� ''�\ ' \ BUILDING y r 88 c\ \ \� / � f \ T.M. 78 PAR EL 14 PAVED PARKING AREA kN_\ \ �, \ --494— — \soo �. SWIM FOREST AND OPEN SPACE - \ \ \ ��' � yy \� \ NO FUTURE DEVELOPMENT \ \ \ \ �\ \ ^� ��� �', 23��=r \ \ — — -\ \ 3 ��\\ -7 F- \ O NDA \ � 7 L — �� \ 1 T.M. 78 PARCEL 14A \STORMWATER MANAGEMENT PLAN SCALE: I" = 40'-0" (BASEMAP & TOPOGRAPHY SOURCE: COMMONWEALTH LAND SURVEYING, LLC 08-16-16) WP0201700065 VIRGINIA'S FIRST FAMILY OF FINE CARS 960 HILTON HEIGHTS RD CHARLOTTESVILLE VA 22901 434-973-1351 TAX MAP 78, PARCELS 14 & 14E HUC: RIVANNA 02080204 BASEMAP SOURCE: COMMONWEALTH LAND SURVEYING, LLC 08-16-16 LAT: 37' 22' 56"N LONG: 77° 32' 24"W MAINTENANCE PROCEDURES DETENTION SYSTEM • AFTER SIGNIFICANT RAIN EVENTS, REMOVE DEBRIS FROM GRATE INLET. • PROVIDE QUARTERLY INSPECTIONS OF EACH MANHOLE, THE RISER AND ORIFICE FOR ACCUMULATED DEBRIS. FOREST AND OPEN SPACE AREA • PROVIDE ANNUAL INSPECTION OF CONSERVATION AREA FOR ILLEGALLY DUMPED TRASH. • PROVIDE ANNUAL INSPECTION FOR RE—GROWTH OF BAMBOO. • ANY ILLEGALLY DUMPED TRASH OR INVASIVE ARE FOUND DURING ANNUAL INSPECTIONS THEY WILL BE REMOVED SCALE: V-1000' LINETYPE & SYMBOL LEGEND SILT FENCE x x x GUARD RAIL EXISTING STORM PIPE Cu NEW STORM PIPE .. CD. N DRAINAGE DIVIDE — — =+� L Cu CONTOUR LINE — — PROPERTY BOUNDARY — — EASEMENT BOUNDARY — — SOIL TYPE BOUNDARY CD SOIL TYPE xxx )j,l v APPROVED by the Albemarle County Community Development Department Date_- FII _WfU,0_t70006.7. E O N U CNN Cu .. CD. N .\ .� =+� L Cu cu ui V z uJ � 00 CD v O B. CLARK GATHRIGHT -. U Lic No. 03 '3 if f �SY' 'IO A L W Q W D w W "45 a z W `Q W \ wC M G 06 0 Lu r cr) Q ON \ 0 . w \ cy.) +) 3: (' 6 p 0 ry (D CY) t 1— �...! U) REVISIONS: 09-07-17 10-05-17 12-05-17 12-13-17 01-03-18 DATE: 08-16-1 DRAWING NUMBER: C- 1 ,02 SHEET 1 OF CONSTRUCTION OF A SILT FENCE (WITS WIRD" SUPPORT) 1. SET POSTS AND EXCAVATE A 4"X4" 2. STAPLE WIPE FENCING TO THE POSTS. TRENCH UPSLOPE ALONG THE LINE OF POSTS. 17 FLOW 3. ATTACH THE FILTER FABRIC TO THE WIRE FENCE AND EXTEND IT INTO THE TRENCH. 4 FLOW 4. BACKFILL AND COMPACT THE EXCAVATED SOIL. EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. SOURCE: Adapted from Installation of Straw and Fabric filter Barriers for Sediment Control, Sherwood & Wyant SILT FENCE DETAIL -1 . SCALE: NONE I BLOCK AND GRAVEL DROP INLET SEDIMENT RIL TER JUN WIRE SCREEN F— FILTERED WATER OVERFLOW RUNOFF — —/ — — WATER \ WITH SEDIMENT .r DROP INLET WITH GATE SEDIMENT -7 -T-F SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE HEAVY FLOWS ARE EXPECTED AND WHERE AN OVERFLOW CAPACITY IS NECESSARY TO PREVENT EXCESSIVE PONDING AROUND THE STRUCTURE. * GRAVEL SHALL BE VDOT #3, #357 OR #5 COARSE AGGREGATE. PLATE. 3.05-1 SOURCE: VA. DSWC 2 INLET SEDIMENT FILTER DETAIL -1.3) SCALE: NONE RISER DETAILS HORIZ. SCALE: 2" = 1' 8" DIA.ORIFICE 24" HDPE REDUCER PLATE. 3.07-3 24" REDUCER 495 490 485 480 NEW DOGHOUSE MH TOP:489.3 IN IN:482.5 INV OUT:477.8 EXISTING STORM PIPE APPR OF _r -- OX LOCATION NEW 18" HDPE 0 6% NEW 4' DIA MH W/ ORIFICE & RISER O TOP: 489.9 INV IN: 482.71 INV OUT: 482.61 TWO—BARREL 36" DIA 60' STORM PIPING PLAN SCALE: 1" = 40'-0" NEW 4' DIA MH W/ FLAT TOP TOP: 488.5 INV IN: 483.13 INV OUT: 483.03 24"' REDUCER .5% mss; REMOVE EXISTING PIPE. PROVIDE FULL PATCH AT EACH CONNECTION cA , PROVIDE INLET PROTECTION \ �_\ PER DETAIL 2/C-1.3 EXISTING 2'x6' GRATE INLET EXISTING GRATE INLET TOP: 488.0 INV OUT: 483.4 a_ W� Of w > bi r�W of O��UJU- � � ISN co +07F, CC) 00 ¢ wrn�d 0c)00 0) c� Oc)-I- Od- EtZO I¢ -WO» (n Z I— Z Z 18" HDPE © 6% 18 CMP ® 5% O — Lu \� >> Z (n ZZ NEW 4' DIA MH W/ FLAT TOP TOP: 488.5 INV IN: 483.13 INV OUT: 483.03 24"' REDUCER .5% mss; REMOVE EXISTING PIPE. PROVIDE FULL PATCH AT EACH CONNECTION cA , PROVIDE INLET PROTECTION \ �_\ PER DETAIL 2/C-1.3 EXISTING 2'x6' GRATE INLET EXISTING GRATE INLET TOP: 488.0 INV OUT: 483.4 a_ w - 1- o� O NEW 2 SM -9.5 0 6 21A AFTER PfPE-AND-COMPACTED U.B-GRADE__AL-PI M2 J RISER & ORIFICE J HEADER PIPE Z TWO -B RREL 36" DIA HDPE DETENTION SYSTE ® 0.5% I 18" HDPE © 6% 18 CMP ® 5% HEADER PIPE r M prj 00 00 x 00 N <U?00 N O� r, 0 00 00 + O 00 i— d �-0 + O 001- �O O Ln O Ln O O N u) t` O O O O O HORIZ. SCALE: 1" = 10' VERT. SCALE: I"= 5' w - 1- o� NEW 2 SM -9.5 0 6 21A AFTER PfPE-AND-COMPACTED U.B-GRADE__AL-PI M2 J RISER & ORIFICE HEADER PIPE TWO -B RREL 36" DIA HDPE DETENTION SYSTE ® 0.5% I 18" HDPE © 6% 18 CMP ® 5% HEADER PIPE O Ln O Ln O O N u) t` O O O O O HORIZ. SCALE: 1" = 10' VERT. SCALE: I"= 5'