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Home My WebLink AboutZMA202100016 Correspondence 2022-12-15 (2)LL�u r � aem NOTE: / RECTANGULAR RAPID -FLASHING Q� O LEWISANoC THIS LAYOUT CONTAINS FIELD -RUN �� SURVEY INFORMATION ONLY< BEACONS LOCATED ON EACH RKD END OF CROSSWALK /7 D R > �� WooLLEY ENGINEERING Ab\\ Consulting Civil Engineers CROSSWALK SIGN 210 5th Street NE MTUCD STD. W 1 1 2 =Doa QUAIL RUN J AHEAD �� NYr'I VEHICULAR FLOW Charlottesvil Virginia gina 22902 973 0045 www.Woolley-Eng.com EXISTING f_J DIRECTION (TYP) POND \ AHEAD SIGN CROSSWALK SIGN I MTUCD STD. W16-9P MTUCD STD. W11-2 Owner: ® CROSSWALK LOCATION GRASSof Virginia Foundation LED INDICATOR One Boar's Head Pointe \ � WITH PEDESTRIAN ONC. Charlottesville, Virginia 22903 034) EXISTING 6' WIDTH ASPHALT PUSH BUTTON P: 982-3777 \ SURFACED WALKING PATH ® \ f �G ARROW SIGN F> ROAD MTUCD STD. W 16-7P ° ° / ,o gLFo PLAN 0 1,000 GRASS 6' AMENDMENT TO AIRPORT ROAD SCALE 1"= 1,000' 2.3 6 �1� 6P \ ,� \�sq4 2, 9.0 Icy EXISTING 5.54WIDTH ASPHALT SURFACED WALKING ICV PATH S� VDOT STANDARD CG-12 Q RAMP WITH DETECTABLE 49 ' / WARNING SURFACE (TYP) PEDESTRIAN CROSSING WITH HIGH VISIBILITY LONGITUDINAL LINE PAINT STRIPING Q O LJJ F� qle* 89 J 220' QP ` Ilk CROSSWALK SIGN MTUCD STD. W11-2 S LLJ O W CIO J 9�CFO? AHEAD SIGN MTUCD STD. W16-9P J Z ~ Q ,� Sy ILL �s4 �' �� \\ `,, `. GRASS 0 ONE WAY SIGN VDOT STANDARD QG-12 \ 0 RAMP WITH DETEC \ — WARNING SURFACE (TYPJ \\ \ \ \ J� U / TIE-IN NEW ASPHALT PATH WITH \ \ O EXISTING CONCRETE PATH \ \ EXISTING 5' WIDTH CONCRETE \ \ O QL SURFACED WALKING PATH \ O e a" ®ICV6 VEHICULAR FLOW �l \ � LAYOUT & DIRECTION (TYP) oe -� � \ \ \ ��' GRASS 8' \ \ _ RIGHT OF WAY LINE °° STORM WATER H PROPOSED 6' WIDTH � xw � _ — ARRAIL. _FO� 500 00 LINEAR FEET PLAN © \ \ Job Number: BRUSHY \ \ 22070 S� � FH \ V 0 10 Q JG / SCALE 1" = 10' J G� PLAN VIEW INSET EXISTING PRIMATIVE TRAIL �0 1"= 10' stormwater Management Narrative: DESIGN CALCULATION INFORMATION: Water Quantity: Date: THE POSTED SPEED LIMIT FOR LEWIS AND CLARK DRIVE Pre -Construction: October 28, 2022 IS 35 MPH. THE DESIGN SPEED IS 40 MPH. The work for this project takes place within the exisiting right-of-way. The site drains via overland Revision: THE AADT FOR LEWIS AND CLARK DRIVE IS 3,000 TRIPS flow. There are several existing ditches and culverts conveying the majority of flow to an existing \ \ \ PER DAY * on -site stormwater pond, known as Pond #2. \ \ • ADVANCED SIGNAGE IS PROPOSED TO ALERT DRIVERS OF POTENTIAL PEDESTRIANS AHEAD Post -Construction: \ Proposed runoff from the project area will convert to Sheet flow to meet VSMP regulations under Part II B, Water Quantity (9VAC25-870-66 D.) Drainage will remain unchanged from \ patterns * SOURCE: 2019 VDOT DAILY TRAFFIC VOLUME ESTIMATES INCLUDING pre -construction conditions. \ VEHICLE CLASSIFICATION ESTIMATES. VDOT PUBLISHED DAILY TRAFFIC \ 1 VOLUME ESTIMATE FOR 2020 IS 2,500 VEHICLE TRIPS PER DAY. Method of Analysis: \ The project area was defined as the area adjacent to the existing roadway and the edge of the Scale: APPROXIMATE LIMITS OF / existing treeline. This area was evaluated along the proposed walking path length and AS Noted EXISTING STORMWATER determined to total approximately 0. 10 acres. Existing and proposed conditions within the project MANAGEMENT POND #2 \ / area were entered into the VRRM spreadsheet to determine the required nutrient load removal l / vaues. Sheet No.: � NOTE: Water Quality: The majority of stormwater from the project area conveys into an existing stormwater pond, Pond THIS LAYOUT IS A COMPOSITE OF OLDER SURVEY INFORMATION, UPDATED FIELD -RUN #2. The Owner plans to purchase nutrient credits from a local nutrient credit bank for the small portion of drainage not entering Pond #2. The credit bank purchase shall be used to satisfyEXI 0 SURVEY INFORMATION, AND COUNTY GIS. 40 0 40 80 120 stormwater quality measures defined in the the state VSMP regulations, Part II B. • Drainage values were inserted into the DEQ VRRM spreadsheet to determine water quality values Scale: 1" = 40' (See VRRM Spreadsheet). The required Total Phosphorus removal determined using the VRRM spreadsheet, totals 0.04 Ib/yr for this project. 1 of 1 copyright © 2022 by Woolley Engineering