The URL can be used to link to this page

Home My WebLink AboutENCLAVE AT REDWOOD - FDP220014 - SUBMITTAL DOCUMENTS - ROUND 2 - DRAINAGE RELATED DOCUMENTProject Name: Review Start Date: 4/18/2023 Project Reviewer: Matt Simpson Item Yes/ No/ N.A. Plans Coversheet - Project name, date, vicinity map, scale, north arrow, general notes, section YES - Vertical control benchmarks YES - Ditch company, other utility signature blocks YES - Check standard notes YES Plat - All existing easements & ROWs with size & type Yes - All proposed easements & ROWs with size & type Yes - Property boundaries with accurate bearings & distances Yes - Streets shown with names & ROW dimensions Yes - Cross lot drainage easements (check grading & drainage plans) N.A. - Floodplain & floodway boundaries shown N.A. Utility Plan - Alignment, size, & type of all existing drainage facilities Yes - Alignment, size, & type of all proposed drainage facilities Yes - 10’ horizontal separation from other utilities at all points Yes - Any existing utilities being removed/abandoned called out Yes *Please note that these items could be shown on the grading and/or drainage plans Grading Plan - Existing contours not more that 2’ intervals, grading shown 50’ off property boundary on all sides, grading of entire area that flows onto site (offsite area can also be shown in report) Yes - Proposed contours (max 2’, 1’ preferred) Yes - Detailed grading showing flow around buildings (side'-lot swales, high points, etc…) Yes - Building footprints with F.F. or lowest opening elevation Yes - Corner lot elevations for all lots N.A. - Tie'-ins with existing contour lines Yes - Flowline, high points, & other spot elevations to define flow patterns Yes Enclave at Redwood ***If new submittal, pull Conceptual Review comments. If resubmittal, pull old set of comments to see if there was any correspondence since the last submittal*** Instructions: mark YES if all components are present; mark NO and mark or note all components not present CITY OF FORT COLLINS Drainage Plans Checklist - *Swale X'-sections (side slopes, WSEL, longitudinal slope) Yes - *All swales should have slope called out, 2% slope or pan? - *Floodplain & floodway boundaries N.A. - Sidewalk location (check for conflicts with swales, check for culverts) Yes - Spillway & berm spot elevations denoted (1 foot of freeboard) Yes - Check maximum 4:1 slopes (3:1 with variance) & slopes labeled for ponds, channels, etc… Yes - Spill locations for sump inlets Yes - LID techniques shown & labeled Yes Drainage Plan - Basins coincide with grading plan Yes - Off'-site areas draining to site delineated Yes - Basin labels (preferably with runoff coefficient & area) Yes - Concentration points Yes - *Flow arrows to show direction of flow Yes - Basin summary table (basin, area, C, Q2, Q100) Yes - Detention pond summary (WSEL100, release rates, volume) Yes - Alignment, size, & type of all existing & proposed drainage facilities Yes - *Floodplain & floodway boundaries N.A. - Water quality (is it provided?) Yes - No back lot swales Yes - LID techniques shown and labeled Yes - Maximum of 3 lots draining onto a swale in the back of another lot N.A. - Drainage easements for lots that require an easement N.A. - Buried riprap placement where required (called out with reference to detail) Yes - *Delineation of wetland areas N.A. - *Spillway location(s) shown with cross'-section provided Yes - *Detention pond depth markers (if deeper than 4 feet) Yes Street Plan - Utility alignments including storm sewer & inlet locations Yes - Intersection details with spot elevations, crosspans, & inlets (Be sure to spot elevations indicate flows will go where drainage plan intends) Yes - FL'-Fl width of each street Yes - Proposed & existing contours Yes Street Profiles - Left & right flowline profiles with slope at inlet locations Yes - Alignment, size, & depth of storm sewers & inlets Yes - Inlet locations Yes Storm Sewer Plan - Alignment, size, type (if RCP, state class), length, slope Yes - 10’ horizontal separation from other utilities at all points Yes - Note stating that all sewer lines will be inspected by City Yes - Proposed & existing storm sewers Yes Storm Sewer Profiles - Alignment, size, type (if RCP, state class), length, slope, of all pipes, manhole, Inlets, & culverts Yes - Inverts & rim or profile elevations for all storm sewer structures Yes - Existing & proposed ground elevations Yes - Concrete encased water main crossings Yes - Buried riprap at outfalls with dimensions called out Yes - WSEL at pond or channel outfall locations Yes - 100 yr HGL Yes - Call out cover for all lines & vertical separation between other utilities Yes - Are FES or other outlet configurations provided Yes - Minimum cover of 1'-foot Yes - Can the pond backflow through proposed or existing storm sewers Yes - Designate public or private storm sewers Yes Details - Manholes, inlets, cross pans, riprap design, detention pond outlets Yes - Storm sewer & riprap bedding Yes - Water quality structure Yes - Detention pond depth marker - All LID construction details included Yes - Buried riprap detail with temporary erosion control included Yes - Verify all current details applicable to the specific site are included Yes Low Impact Development (LID) - Verify LID table is on the drainage plan Yes - Verify all applicable LID construction details are on Utility Plans Yes - Verify all applicable LID specifications are on Utility Plans Yes Phasing Plan - Phasing delineations with each phase labeled N.A. - Utility alignments shown N.A. - All detention ponds shown – Make sure all ponds that will be needed in the initial phases will be built in those phases N.A. N.A. - All flows going off the end of unfinished roads have erosion protection N.A. Offsite Road Improvements - Street X'-sections need to show new culverts if old ones are filled in when roads are widened/altered '- Make sure flows have conveyance. N.A. N.A. - CMP’s replaced N.A. - Side slopes of roads 4:1 or at least matching existing N.A. Miscellaneous - Gas spill containment N.A. - Concrete sidewalk culverts in street (instead of curb cuts) N.A. - Check to make sure that the site plan and landscape plan match N.A. Notes: On overall coversheet Ditch company Storm notes ave at Redwood Drainage easements shown, but no "cross-lot drainage easements" (other than in areas as previously discussed/determined) ld set of comments to see if there was or note all components not present LID Map See Design Points See Water Quality Map One swale on west PL See LID Map TRM in some cases Easements for storm and drainage infrastructure provided, but not for "single-family lots" Existing non-JD wetlands labeled in Redwood pond Note added to plans to include Shown on Street Plans & Detailed Grading Plans Forebays in some cases Existing ground is shown Details are included See spillway details Pipes outlet lower than 100-yr, major events will back into proposed sewers Notes are made on storm sewer P&P Sheets Structures detiailed, WQ orifice plate details wil be included after FDP R2 Stormtech and rain garden details are included in the plan Included details are current Separate LID plan with Table Stormtech and rain garden details are included in the plan Stormtech and rain garden construction specifications