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HomeMy WebLinkAboutWPO201400004 Checklist 2014-02-03 ',ere Nmeao° Albemarle County Engineering Erosion and Sediment Control Plan checklist for plan reviewers 5 Mar 2014 (Use the latest checklist from the Team Services engineering forms site) An erosion and sediment control plan is a document which illustrates the measures used to control erosion and sedimentation during construction. All measures follow the Virginia Erosions and Sediment Control Handbook. Reference key; [Square Brackets] are County Code references, {Curved Brackets; are policy references, and(regular parenthesis)are explanatory. Links to reference documents are provided where possible. ApyAcation information: Completed WPO application and fees, with owners signature [County Code 1 5-32.4.3.2, 18-32.19. 17-203, 17-303] Erosion Control plans require a Water Protection Ordinance (WPO) application and original owner's signature. No review is provided without application, owner signature and fees. This is true even for revisions. It is important that the owner be aware of comments and resubmittals, and this is the county assurance. ZCopies of federal and state permits for any wetland or stream disturbance. (Army Corps, VDEQ, etc) [17-312A,B, 17-319B,D, 17-320CD, 18-32.1.2, 14-311; Title information: n Project title. Titles should be appropriate. It should be an erosion control plan, not a stormwater plan, or site plan, etc. In some cases a WPO package will contain a stormwater plan and a mitigation plan,but they should be on separate sheets with keys and page titles. n Professional seal,with original signature and date for professionally prepared plans. Content: The erosion control plan must not contain information regarding permanent improvements that do not also appear on other plans. Erosion control plans are temporary documents that are discarded after projects are complete. Existing conditions plan view information: CD accurate current existing topography at the time of submittal, including all existing site features, and any recent disturbances, all at a legible scale 0 date and source of the topographic information: All topography should be at least visually field verified by the designer within the last year (9 WPO buffer limits; 100' from stream or wetland bank, 200' from reservoirs, or floodplain limit if greater. No huffier disturbances without WPO Program Authority approval and a mitigation / plan. floodplain limits, including 100yr flood limits for any channel with a drainage area of 50+acres. „/Floodplain undisturbed. Disturbances require a Special Use Permit or Floodplain Development Permit. all existing easements (access, drainage, sight, sanitary easements, etc.)with deed book references, locations and dimensions (� all critical slopes (typically shaded) , Zoning Ordinance buffers shown and protected undisturbed. Disturbances require Planning approval of a waiver. Nor' Albemarle County Engineering E&SC Plan Checklist Page 2 of 4 Proposed plan view information: Grading.• [18-32.6.2, 14-303] proposed topography at minimum 2' contour intervals—tied into existing contours, as well as all proposed site features. (Sites with less than 6' of grade change should consider using smaller contour intervals.) These should agree with other final plans. proposed slopes are all 2:1 (horizontal:vertical) or flatter ;Design Manual, section 81 proposed slopes steeper than 3:1 have low maintenance(not grass) ground cover specified on the plan {Design Manual, Section 8} existing critical slopes are not disturbed,unless a waiver or exemption has been granted for the disturbance. [18-4.2, 14-304] N Iw Retaining Wall Plans approved. Any walls supporting roads or necessary infrastructure require engineered plans (not generic manufacturer's details) and computations. {Design Manual, section 81 This will also be required where walls are close to property lines and there is the danger of affecting neighboring property, either during construction, with later failures, or with pedestrian or vehicle safety. final contour shapes and slopes ensure no undrained pockets or stagnant pools Narrative: narrative and project title (Narratives are now optional, and not reviewed by the County, other than noting whether they are not seriouly in error, like a boilerplate with another County's name on it.) Erosiyi and sediment control measures: limits of clearing and grading encompassing all disturbances, entrances, staging and parking areas, areas where sediment laden runoff will cross, or any construction related activities. This must match any landscaping and conservation plans submitted with site plans a construction entrance (CE) draining to a sediment trap or basin .. dust control symbols (DC) l' temporary and permanent seeding symbols (TS, PS) existing drainage divides iv64 existing vegetation, with trees to be saved located by drip lines. This must match any landscaping and conservation plans. _() protection provided for all stages/phase of construction,from initial land clearing to final grades and hardscapes. This is our most important item. Plans which show only N.►" Nose Albemarle County Engineering E&SC Plan Checklist Page 3 of 4 inlet protection on proposed drainage systems, which are only possible to install upon completion of grading, should be denied without further review. no erosion control measures in the way of construction access or grading. Diversion dikes or silt fence are not placed in the middle of the site, or through access or grading. Sediment traps are not under or on top of fill material or held up by retaining walls. Construction entrances are not on fill, etc.If the concept for site protection is not adequate in this regard,further review of the plan may not be possible. existing soil boundaries are shown with labels. Areas already disturbed are indicated, with constructed fill depth or cut noted. critical erosion areas are identified; areas of constructed slopes, areas near property lines 0 adjacent off-site disturbances are shown with erosion control facilities a stockpile location. where cut or fill balances have a 10,000 cubic yard deficit or more,plans should not be approved without a waste area identified. This must a on-site, or on another approved and permitted site. (Don't make the inspectors chase trucks to find the violation.) 0 a staging and parking area, or other construction related areas diversion dikes are used to direct drainage to traps and basins silt fence is not used across contours in place of diversion dikes. silt fence is limited to areas of sheet flow with 1/ acre per 100ft of level on-grade silt fence. Plans showing only silt fence, without sediment trapping measures, should not be approved unless they meet this criteria and fill dirt is minimal. all swales and low points at the perimeter of the site have a sediment trap or basin. Silt fence in swales is typically not adequate. Check dams do not substitute for traps. If the concept for site protection is not adequate in this regard,further review of the plan may not be possible. r! temporary slope drains (TSD) or diversions are provided to prevent discharge over disturbed or fill slopes / inlet protection(IP) on all inlets w(b culvert inlet protection (CIP) on all culvert inlets outlet protection(OP) on all outlets • all watercourses are protected and encroachments minimized r1115 stream crossing(USC,SC) and diversions are provided at all stream crossings. adequate channels (MS-19)provided for each outfall (see Design Manual for minimum content) / all traps and basins are shown with proposed contours. Simple boxes or symbols are not sufficient, in most cases, to determine layout or bond amounts. ,or each trap; ,�+ drainage area is 3 acres or less sized for total drainage area, including those for in-line upstream facilities wet storage is 67cy or more dry storage is 67cy or more wet storage is 4' deep or less wet storage side slope is 1:1 or flatter dry storage side slope is 2:1 or flatter stone weir is 6ft per acre of drainage area embankment and stone weir height is 5' maximum from outside toe embankment top width is adequate (see table 16 reference) 2:1 length:width ratio for flow path Albemarle County Engineering E&SC Plan Checklist Page 4 of 4 'or each basin; (GB 3.14) sized for total drainage area, including those for in-line upstream facilities wet storage is 67cy or more dry storage is 67yr or more A wet storage side slope is 1:1 or flatter dry storage side slope is 2:1 or flatter embankment 15' high or less from downstream toe principle and emergency spillways sized per handbook requirements embankment has 1' freeboard during 25yr storm with emergency spillway embankment has 2' freeboard during 25yr storm without emergency spillway trash rack/ anti-vortex device specified per handbook requirements riser anchor size specified per floatation computation dewatering device sized for 6+hr drawdown of dry storage: 3"dia. minimum safety fence and signs stating"danger, quick sand, do not enter"provided if near any residential properties, or public access structures and embankment match permanent design for facilities to be converted to permanent stormwater management facilities embankment top width is adequate (see Design Manual reference details) 2:1 length:width ratio for flow path. If necessary, baffles specified only on temporary structures (p.III-79) Details: / a paved construction entrance detail (see Design Manual reference details) for projects in the development areas over 10 acres a typical section for each temporary channel or diversion, referenced from the plan sheets. Existing ground should be shown at the maximum cross-slope on the plan. r\I( details and copies of Program Authority permissions for any variances. Mass or Early Grading: z mass grading Planning approval. (This is also called rough or early grading plans which contain only approximate finished grades and culverts necessary to grade) Mass grading can only be permitted within planned developments where a concept grading plan was approved with the rezoning. The agent (Director of Planning)needs to formally determine that the grading plan is in general conformity with the approved rezoning plan. Otherwise, an initial site plan needs to be approved prior to issuance of a grading permit. Issuance of a grading permit at the initial site plan stage, as apposed to after final plan approval, requires specific approval from the County Engineer. Albemarle County Engineering Drainage Plan checklist for plan reviewers 18 Feb 2014 (Use the latest checklist from the Team Services engineering forms site) A drainage plans is typically a component of a road plan, site plan,or stormwater management plan. It consists of the channel, ditch, culvert,or stormsewer design drawings, drainage maps, and computations for hydrology and hydraulics. Reference key; [Square Brackets] are County Code references, {Curved Brackets; are policy references, and(regular parenthesis) are explanatory. Links to reference documents are provided where possible. A professional seal should be provided for any computation packages where are separate from sealed plans. Drainage: [18-32.6.2d, 14-305, 311] ✓ drainage area maps (This is a basic element, and without this there is no review) drainage computations (usually in the form of tables from the VDOT Drainage Manual App. 9B-1 LD-2014, App.7B-1 LD-268,App., App.8B-1 LD-269, etc. -computations are a basic element, and without them there is no review) all proposed and existing storm sewer must be shown in plan view for residential development, principle access free of flooding during the 25yr storm [1.4- 41.0] C%' site runoff and entrances do not drain into streets (from VDOT Drainage Manual 9.4.5.2, 9.4.6.2) concentrated runoff(lcfs or greater) does not run across travelways/streets (as above' following VDOT design) /47/1 drainage does not run across,through, or backwater in dumpster areas [18-4,12.19] overland relief is provided for any drainage structure or inlet in case of clogging. The failure of any system will not cause structures, streets or yards to flood. {Policy} direction of flow change (or deflection angle) in each drainage structure is 90 degrees or greater(flow should not have to reverse direction) (from guide of VDOT Drainage Manual 9.4.9.3.2.3) / labels on all drainage structures provided (and should match the drainage computations and profiles) /Viol provisions and easements for drainage across 3 or more lots. Dense development where fencing, decking, etc is expected should provide yard inlets and pipes in easements, rather than ditches {Policy{ Drainage profiles: (applicable to site plans,road and drainage plans) [14-311, 18-32] drainage profiles for each pipe, structure or channel must contain: existing ground proposed ground N/4 any channel linings U all utility crossings a VDOT designation (MH-1, DI-3B, etc.) for each structure i throat length for each drop inlet ►v/gyp grate type for each grate inlet a label on each structure to correspond with the computations Nwe Albemarle County Engineering Drainage Plan Checklist Page 2 of 2 / material and strength class or gage of each pipe manhole access every 300' for 15"-42" or 800' for 48" or greater pipe slopes at 0.5%min. to 16%max. (per VDOT stnds for anchors over 16%) concrete inlet shaping(IS-1) specified on any structure with a 4' or greater drop safety slabs (SL-1) in any structure taller than 12'. / top or rim elevation for each structure all invert elevations for each structure(with positive flow drop between inverts). ,If end sections (ES-1) or endwalls (EW-1) on all pipe outlets. Endwalls for culverts 48"or taller scour outlet protection at all outlets, corresponding to computations (Green Brook, OP) Drainage computations: (applicable to any plan proposing pipes, channels, etc.) Pipe computations for all pipes All proposed systems are designed within open channel flow capacities. (HGL computations are not necessary, and should not be relied upon unless the entire system is to be watertight.) For systems within drainage easements, all proposed pipes are a minimum 15"in diameter ✓ There are no excessive outlet velocities (> 15fps) l Curb inlet computations for any curb inlets on grade 7 z / All spreads are less than 10' 4f 10 3 'NO 'S t o carryover is accounted for Q 100% capture at entrances so no flow runs out entrances into travel lanes 100% capture, or overland flow of capacity storm, to stormwater management facilities. Typically stormwater management is designed to the 1 Oyear storm, and inlets on grade cannot capture this. Curb inlet computations for any curb inlets in sump conditions All flow depths are below 6"in the capacity table ./ All spreads are less than 10' 100% capture to stormwater management facilities Ditch computations for any ditches ditch linings specified per plans meet velocity requirements N/0 Culvert computations for any culverts headwaters < 1.5 x culvert height, and 18"below shoulder elevation of streets. u In Outlet protection computations for all outlets dimensions and stone sizes for all outfalls Proposed pipe and inlet drainage area map limits of all areas and sub-areas draining to proposed structures, and existing structures or channels which will be impacted acreage of each drainage area as used in computations hydrologic coefficient for each drainage area as used in the computations time of concentration for each drainage area as used in the computations destination structure labeled for each drainage area(if not obvious) Albemarle County Engineering Road Plan checklist for plan reviewers 17 Feb 2014 (Use the latest checklist from the Team Services engineering forms site) A road plan is a document detailing the design and construction of a road, street or alley. Reference key; [Square Brackets] are County Code references, {Curved Brackets} are policy references, and(regular parenthesis)are explanatory. Links to reference documents are provided where possible. Application information: Completed application and fees. Road plans require a Subdivision application. No review is provided without applications and fees. Plans containing both public and private roads should pay the higher fee for private roads. -'/ Copies of federal and state permits for any wetland or stream disturbance. (Army Corps, VDEQ, etc) [17-312A,B, 17-31913,D, 17-320C.D. 18-32.1.2, 14-311] Title information: 0 Project title. Titles should be appropriate. It should be a road or street plan, not a site plan, subdivision plan, or erosion control plan, etc. Q Professional seal, with original signature and date. [18-32.6.1] Content: The road plan must contain, for each road/street/alley, at a minimum 1. a plan view, customarily at 1"=50' or better. 2. a profile view 3. a typical cross-section The plan should NOT contain vast areas of work outside the road section. Construction of a road should not be an excuse to mass grade, or install other utilities or improvements. VDOT approval is obtained for any plan affecting public right-of-way. For public road plans, VDOT review will supercede most detailed design items below. a FIRE/RESCUE DEPARTMENT approval is obtained. Plan View: [18-32.6.2, 14-304, Subdivision Ordinance Article IV Division 2, VDOT SSAR] D accurate current existing topography at the time of submittal, including all existing site features, and any recent disturbances, all at a legible scale [1 8-32.6.2] 1) date and source of the topographic information: [18-32.6.2] All topography should be at least visually field verified by the designer within the last year {Aerial topography is often noticeably inaccurate. Disturbances sometimes take place subsequent to the flown date. This can be a particularly recurring problem where early or mass grading plans have occurred previously. In these cases, the topography needs to be updated.} (; WPO buffer limits; 100' from stream or wetland bank, 200' from reservoirs, or floodplain limit if greater [17-31 T floodplain limits, including 100yr flood limits for any channel with a drainage area of 50+ acres [18-32.6.2d, 18-30.3] all existing easements (access, drainage, sight, sanitary easements, etc.) with deed book references, locations and dimensions [18-32.6.2] fte Albemarle County Engineering Road Plan Checklist Page 2 of 4 0 all existing streets included with labeled pavement and right-of-way widths,route numbers and street names C all proposed streets included, with right-of-way and street names ■ stationing at 50' minimum on all proposed streets, on plan and profile ,e," street horizontal curve start point, end points and radii labeled,meeting standards (see the Design Manual reference details) N turnarounds provided on all streets or alleys (see the Design Manual reference details) street edge of pavement or curb radii labeled at all intersections and turnarounds (see the r Design Manual reference details) N/A roundabouts designed per VDOT and ASHTO guidelines (VDOT Road Design Manual app.B-5.G) (vA guardrail over any slope steeper than 3:1, wall, or drop-off greater than 4', with start and end sections labeled, and VDOT designations (GR-2, GR-2a, etc.) (see the VDOT Road Design Manual. Guardrail placement is complicated and subject to a lot of judgement and variation. This is a quick rule-of-thumb summary from the Couty Engineer.) pavement markings dimensioned and labeled d signs for traffic control shown and labeled: speed limit on all streets, stop signs at all intersections 0 street name signs at every intersection, typically placed opposite stop signs [should reference County Road Naming and Property Numbering Ordinance and Manual] street tree locations, species and height or caliper(typically to be review by Planning) Grading: [18-32.6.2, 14-303] 0 proposed topography at minimum 2' contour intervals—tied into existing contours, as well as all proposed site features. (Sites with less than 6' of grade change should consider using smaller contour intervals.) proposed slopes are all 2:1 (horizontal:vertical) or flatter {Design Manual, section 8} 1\/4 proposed slopes steeper than 3:1 have low maintenance (not grass) ground cover specified on the plan {Design Manual, Section 8} Q existing critical slopes are not disturbed,unless a waiver or exemption has been granted for the disturbance. [18-4.2, 14-304] ('I I Retaining walls should be accurately shown on plans, reflecting material thickness and batter where such measurements may affect layout. Ai fq Retaining Wall Plans checklist. Any walls supporting roads or necessary infrastructure require engineered plans (not generic manufacturer's details) and computations. ;Design Manual, section 8} This will also be required where walls are close to property lines and there is the danger of affecting neighboring property, either during construction, with later failures, or with pedestrian or vehicle safety. These concerns can be alleviate with layout spacing also. In any case,retaining walls will require building permits at construction. Required Easements: [Zoning Ordinance 18-32.7.4, Subdivision Ordinance, Article IV, Div. 4] all proposed permanent easements, dimensioned and labeled Examples of easements are: sidewalk easements for sidewalks to be maintained with streets outside right-of- way.way. It is preferable that sidewalk be inside street right-of-way. drainage easements for any drainage passing through the site from off-site, or for drainage crossing proposed property lines. Name Albemarle County Engineering Road Plan Checklist Page 3 of 4 0/P stormwater management easements over all facilities and associated structures and access /VA interparcel access easements ? intersection or entrance sight easements all drainage easements are a minimum 20' wide. Required width: 10'+(pipe dia. or channel width) +2'+2(depth-5'). The pipe, channel or structure must be within the center third of the easement. {Design Manual, section 6} r—' no structures or trees within drainage easements {Design.Manual, section 6} Entrances and right-of-way improvements: [per VDOT Secondary Street Acceptance Requirements (SSAR), and VDOT Road and Bridge Standards] only approved entrances are shown. Placing entrances on road plans should not be a way of circumventing site plan review of entrance placement or number, or adequate review of traffic, spacing, turn lanes, etc. 0 all entrances have a VDOT designation [PE-1, CG-9a, etc). In the case of dense residential development, concrete entrance aprons are important to continue drainage on the street side, and to control fine grading of asphalt and sidewalks. / entrances do not exceed 4%grade for a distance of 40' from the intersected street, measured anywhere in the entrance [1 8-4.12.17] (7j unobstructed sight distance lines at entrances, less than 10' x Speed Limit of intersected streets,measured from a point 10' off the edge of pavement of the intersected street t✓ 12.5' minimum radii on entrances (or per VDOT requirements, typically 25'-35') [per VDOT Access Management Regulations and Standards] NiA turn and taper lanes where applicable with lengths and widths labeled (taper at 12:1 with 12' lane widths) Profile View: (applicable only to road or street plans) ✓ stationing at 50' minimum on all proposed streets, to match the plan view sheets ✓ proposed centerline existing ground centerline(Historically,the existing centerline was field surveyed,but this is happening much less with current aerial topography. This may be requested if inaccuracies are noted.) labeled existing and proposed grade at each 50ft station point vertical curves provided at all grade transitions 7 vertical curve start, vertex and end points labeled vertical curve length and K(or stopping sight distance) labeled at each vertex,meeting required design values 0 percent grades labeled for all road segments, meeting design values (VDOT Road Design Manual, App. B) rural street intersections continue the-2%intersected cross grade for a minimum of 20' from the edge of pavement of the intersected street. A low point is provided off the intersected street for drainage. [policy, following VDOT practice} /' street grade is less than 4% for a minimum of 40' from the edge of pavement of the intersected street. (This grade can be within the first road curve which transitions from he 2%intersected cross grade) {policy, follows ord. for travelways 18-4.12} pipe and utility crossings shown and labeled (ACSA has minimum clearances) cross drain locations shown and labeled with VDOT designations (CD-1,2) at every major cut and fill transition or sag curve ✓ ..r Albemarle County Engineering Road Plan Checklist Page 4 of 4 the station of intersections are shown and labeled with the street names N us grades are a maximum of 6%in turnarounds N A grades are a maximum of 4%through roundabouts Details and Sections: (reference VDOT Road Design Manual, or Sub. Ord.) j typical sections for each street, street segment, or alley p Albemarle County general construction notes for streets (reference) traffic generation and distribution summary(ADT's)with road networks / pavement designs per VDOT guides [2009 VDOT Pavement Design Guide for Subdivision and Secondary Roads in Virginia] 7 pavement widths meeting design standards / pavement crown at 1/4":1' slope pavement surface,base, and sub-base thicknesses and materials / curb and gutter where applicable with VDOT designation(CG-6), and stone base of 6" 21-A or better(CG-2 also acceptable if a gutter is not needed for drainage) &i() shoulder at 1":1' slope or flatter and 4' or greater width for rural sections t1' maximum slopes of 2:1 or flatter with guardrail shown where applicable. [Design Manual] N/a proposed slopes steeper than 3:1 have low maintenance (not grass) ground cover specified on the plan [Design Manual] A guardrail over all fill slopes and culverts, with 3' additional shoulder,using VDOT designations (GR-2, GR-2A, etc.) right-of-way/easement width, centered on street, meeting design standards sidewalk location and widths,minimum 5' width,4" concrete surface, 4"21-A stone base, with underdrains (UD-4, etc)per VDOT standards where applicable planting strip if applicable, 6' minimum width [14-422] lri ditches dimensioned at 3:1 slope from shoulder, 1' depth min., and 4' min. width from shoulder to ditch centerline, for rural sections alleys have 12' pavement width, with 14' wide stone base [14-410] transitioning detail (20' minimum) for roll-top curbing in front of any inlets I n. typical sections for proposed channels with locations referenced from the plan view sheets sidewalk detail or specification to be a minimum 4" stone base and 4" concrete of 3000psi at 28 days, or stronger. [VDOT App. B, Subdivision Street Design Guide, and 14-422] P13 retaining wall details referenced from plan, if detailed plans and comps were not required. This is only really applicable to standard VDOT gravity walls. Walls not affecting the road should not appear on road plans. ��� Rural section ditches may not be deep enough for 15"diameter culverts within the ditchline if the ditches are only 1' deep. This usually involves moving the ditchline away from the road at driveway locations, which may not be possible in denser development. Ditch plans will need to accommodate these situations. 6IS '1214 ' I1A-5 t 22,, 4 Albemarle County Engineering Final Site Plan checklist for plan reviewers 17 Feb 2014 (Use the latest checklist from the Team Services engineering forms site) A site plan is a zoning document,required according to the Zoning Ordinance,Code Chapter 18 section 32 that delineates the overall scheme of development of one or more lots. Reference key; [Square Brackets] are County Code references, {Curved Brackets} are policy references, and(regular parenthesis)are explanatory. Links to reference documents are provided where possible. Title information and overall content: Project title. Titles should be appropriate. It should be a final site plan, not a stormwater plan, or erosion control plan, a road plan, etc. Q Professional seal, with original signature and date. [18-32.6.1] Content: The site plan must not contain the erosion control plan, stormwater management plan,road/street plans, or mitigation plan. These must be separate documents, to be reviewed and bonded separately, and not part of zoning documents or zoning enforcement, or zoning letters of revision, or permanent land records, etc. If these are included, they must be removed. Existing conditions plan view information: (applicable to any type of plan) C'7 accurate current existing topography at the time of submittal, including all existing site features, and any recent disturbances, all at a legible scale [18-32.6.2] Q date and source of the topographic information: [18-32.6.2] All topography should be at least visually field verified by the designer within the last year {see road plan note} WPO buffer limits; 100' from stream or wetland bank, 200' from reservoirs, or floodplain limit if greater [17-317] floodplain limits, including 100yr flood limits for any channel with a drainage area of 50+ acres [18-32.6.2d, 18-30.3] all existing easements (access, drainage, sight, sanitary easements, etc.) with deed book references, locations and dimensions [18-32.6.2] 0 all critical slopes (typically shaded) [18-32.5.2] Proposed plan view information: (applicable to final site plans, road and drainage plans) Grading: [18-32.6.2, 14-303] c proposed topography at minimum 2' contour intervals—tied into existing contours, as well as all proposed site features. (Sites with less than 6' of grade change should consider using smaller contour intervals.) proposed slopes are all 2:1 (horizontal:vertical) or flatter {Design Manual, section 8} / proposed slopes steeper than 3:1 have low maintenance(not grass) ground cover specified on the plan {Design Manual, Section 8} 0 existing critical slopes are not disturbed, unless a waiver or exemption has been granted for the disturbance. [1.8-4.2, 14-304] Nd Retaining walls should be accurately shown on plans, reflecting material thickness and batter where such measurements may affect layout. NA Retaining Wall Plans checklist. Any walls supporting roads or necessary infrastructure require engineered plans (not generic manufacturer's details) and computations. {Design Noe "we Albemarle County Engineering Final Site Plan Checklist Page 2 of 3 Manual, section 81 This will also be required where walls are close to property lines and there is the danger of affecting neighboring property, either during construction, with later failures, or with pedestrian or vehicle safety. These concerns can be alleviate with layout spacing also. In any case, retaining walls will require building permits at construction. Easements: [Zoning Ordinance 18-32.7.4, Subdivision Ordinance, Article IV, Division 4] i7 all proposed permanent easements, dimensioned and labeled Examples of easements are: sidewalk easements for sidewalks to be maintained with streets outside right- ofway. It is preferable that sidewalk be inside street right-of-way. drainage easements for any drainage passing through the site from off-site, or for drainage crossing proposed property lines. stormwater management easements over all facilities and associated structures and access 7-and interparcel access easements ./ intersection or entrance sight easements all drainage easements are a minimum 20' wide. Required width: 10'+(pipe dia. or channel width) +2'+2(depth-5'). The pipe, channel or structure must be within the center third of the easement. ;Design Manual, section 6) no structures or trees within drainage easements ;Design Manual, section 6} Entrances and right-of-way improvements: [per VDOT Secondary Street Acceptance Requirements (SSAR), and VDOT Road and Bridge Standards] all entrances with a VDOT designation [PE-1, CG-9a, etc) entrances do not exceed 4% grade for a distance of 40' from the intersected street, measured anywhere in the entrance [18-4.12.17] unobstructed sight distance lines at entrances, less than 10' x Speed Limit of intersected streets,measured from a point 10' off the edge of pavement of the intersected street 12.5' minimum radii on entrances (or per VDOT requirements, typically 25'-35') [per VDOT Access Management Regulations and Standards] VDOT approval is obtained for any plan affecting public right-of-way N M turn and taper lanes with lengths and widths labeled (taper at 12:1 with 12' lane widths) Parking and circulation: [18-4.12] 100' on-site sight distance is maintained by use of curbed islands a minimum 6' off building corners or other site obstructions. curbing on all parking areas and travelways with VDOT designations (CG-2, CG-6) loading and dumpster areas should be accessible at all times (not behind parking) parking or loading spaces cannot double as travelways all parking rows should be protected by curbed islands ;Policy} minimum 3' width of curbed islands ;Policy; all edges of pavement labeled (where there is no curbing) 1 parking areas do not exceed 5% grade anywhere, in any direction T parking width x depth x aisle width is 9x18x24' or 10x18x20' (where a 2' grass overhang is possible parking spaces can be 16') [18-4.12.16] t parallel parking spaces are 9'x20' (with a minimum aisle/street width of 20') loading spaces are 12'x25' (with a minimum aisle width of 24') `'""'` Albemarle County Engineering Final Site Plan Checklist Page 3 of 3 travelways without parking are 20' wide measured from curb faces 'u parking places are separated from entrances and streets (to prevent queuing onto streets) a minimum 18' from back of the entrance radius [see VDOT Road Design Manual, app. F, throat length and corner clearance] pl V sidewalk abutting parking is 6' wide (exclusive of curb), or bumper blocks are provided (see reference details in the Design Manual) _ sidewalks are a minimum 5' wide, exclusive of curb. planting strips are a minimum of 6' wide on any street. [1.4-422] rr '14 one-way aisles have a 12' minimum width. (One-way circulation is only permitted when approved with a preliminary site plan) J dumpster pads are 10'xl0' with 8' in front for wheel bearing(total 18' depth) N!a dumpster pad detail or specification to be a minimum 4" stone base and 6" concrete of 3000psi at 28 days, or stronger, reinforced with a minimum grid of wire reinforcing or#� bars at 12" on center. {Policy Drainage: [18-32.6.2d, 14-305, 311] Drainage Plans approved. Drainage and stormsewer design can be reviewed with the site plan, or with the stormwater management plan. Where roads or streets are included, drainage from the road can be included with those plans. Roads, Streets, Alleys: [18-32, 14 Art. IV Div.2] O Road Plans approved. Road plans must be a separate stand-alone document, to be bonded and inspected and as-builts prepared. They should not be part of a site plan set. Water Protection Ordinance (WPO)Plans: [18-32.7] -77) WPO plans approved. The Water Protection Ordinance (Code Chapter 17)requires A Virginia Stormwatere Management Program (VSMP)permit, Stormwater Management Plans, Erosion Control Plans, Pollution Prevention Plans, Stormwater Pollution Prevention Plans, and for stream buffer disturbances a Mitigation Plan. These must be approved prior to final site plan approval. They have separate procedures and requirements and should not be part of the site plan set.