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HomeMy WebLinkAboutSite Certifications - 12/07/2023Page 1 OVERALL SITE and DRAINAGE CERTIFICATION Commercial, Multi-Family and Subdivision Certification Form and Checklist Project Name: Date: Building Permit Numbers: (Commercial or multi-family) Per the requirement in Fort Collins Stormwater Criteria Manual (FCSCM) Chapter 3, Section 3.0 to certify as- built construction to the approved drainage and grading plans, please fill in all applicable items in this Certification Form for Commercial, Multi-Family and Overall Single Family sites. NOTE: several items must be verified during construction. A copy of the approved grading plan must be submitted with the as-built grading plan. (As-built elevations must be written in red next to the approved elevations.) •Use “Yes” for items completed as described. •Use “N/A” for items that are not applicable to the site being certified. •If any blanks are “No,” attach an explanation referencing the item number below. Attach an explanation or description of the as-built condition for any items listed or for anything not listed but shown on the approved construction plans. Provide an as-built redline or Mylar drawing with the following: I.Water Quality and Quantity Detention Basin - FCSCM Ch. 6 and 7 For multiple detention basins on a site, provide the following for each basin separately: A. Volume: As-built topographic verification is attached at 1-foot (or less) contour intervals and volume verification calculations for the water quality capture volume and the 100-year detention storage volume. 1. Detention basin topography was prepared by a professional land surveyor registered in the state of Colorado. 2.Both proposed and as-built contours are shown on the same plan sheet (dashed lines for proposed and solid lines for as-built). 3.All critical spot elevations as shown on the approved construction plans have been verified and the as-built elevations are shown on the plan sheet. 4.Stage-storage-discharge tables are provided on a separate document. 5.Verification that designed drain time is in compliance with Colorado Revised Statute § 37-92- 602(8) is attached and has been uploaded to the Statewide Compliance Portal (tinyurl.com/COCompliancePortal) for approval. Uploaded documents must include: a.The cover sheet from the approved drainage report b.The stamped certification page from the approved drainage report c.As-built topographic survey d.Stamped certification page from the Overall Site & Drainage Certification e.PDF output from the Stormwater Detention and Infiltration Design Data Speadsheet 11/19 Wes Lamarque 12/7/2023 Page 2 B.Water Quality and Quantity Detention Basin Grading: Attached is as-built verification that there is a minimum 2% positive fall into the concrete trickle pans or flow-line(s) from all areas in the bottom of the detention pond. If there is a “soft pan” in the flow-line, all areas still must meet the minimum 2% grade requirement. 1.Low Flow: Choose one of the following detention basin low flow options as applicable: a. Turf swale for low flow path in detention basin. There is a minimum 2% grade in the flow-line(s) of the detention basin. The flattest as-built grade is . b.Concrete pan for low flow in detention basin. There is a concrete pan installed that meets the grades as shown on the approved construction plans. (Show as-built spot elevations.) c.Soft pan for low flow in detention basin. •Verify and document the soft pan material gradation, trench width and depth - to be verified during construction by engineer. Picture documentation is preferred or engineer’s statement of visual inspection and compliance. (Choose one below.) o There is a soft pan with an underdrain installed that meets the design on the approved construction plans. (Show the underdrain grades, bedding material, geotextile, spot elevations, bends, cleanouts, etc.) o There is soft pan installed without an underdrain but there is a type A or B soil. The soil type must be documented by supplying verification from a registered professional geotechnical engineer. NOTE: Spot elevations are to be within 0.2 ft. +/-. 2. Side Slopes: The as-built side slopes of the detention basin have been calculated and are shown. Indicate the side slope with an arrow and a numerical value (e.g., 6.25:1). The maximum slope allowed is 4:1. Small areas of 3:1 may be acceptable, but slopes steeper than 3:1 must be stabilized or re- graded. Provide documentation if a variance was granted for steeper slopes during the design process. 3.Spillway: The following items must be field verified: a.The location of the spillway is indicated on the as-built plan. b.The width of the spillway is indicated on the as-built plan. c.The elevation(s) of the spillway is shown on the as-built plan. d.A concrete ribbon defines the location and grade of the spillway. e.There is downstream scour protection in the spillway as per the construction plans. Indicate type: (riprap size “D50” gradation and bedding type, geotextile, buried riprap with inches of bury, etc.). f.There are no obstructions in the spillway, such as trees, bushes, sidewalks, landscape features, rocks, etc. 11/19 Detention pond's earthen berm was designed with the Fox Grove First Filing's Design and refined with the 2nd Filing. The pond provides 145% of the required detention volume. This earthern berm is the location of a future City Trail which will further define the spill path in the future with concrete improvements. No additional scour protection is provided as the pond is greatly oversized and the downstream path is well vegetated. The spill path matches the approved design. minimum observed grade in detention pond is 1.9%. No drainage issues observed Page 3 4.Outlet Structure: a.The orifice plate for the approved release rate is installed with the correct size and location of the orifice. b.The orifice plate for the water quality outlet is installed with the correct hole size, number of rows and columns of holes. c.The bottom hole on both the water quality and quantity outlets are at the bottom of the plate so no water ponds in front of the plate. d.The well screen is the correct material and is installed as shown on the construction plans. e.100-year overflow grate elevation is . (Elev. A on detail D-46) f.The top elevation of the water quality capture volume is . (Elev. B on detail D-46) g.Overflow grate is made of the correct material, has the correct bar spacing, is hinged at the top and bolted at the bottom. h.The bottom of the outlet box has no obstructions or misalignments that will cause it to retain runoff water and is sloped at 2% towards outlet. II.Channels/Swales - FCSCM Ch. 8, Sec. 2.0 and Ch. 9, Sec. 5.0 A. Capacity: The as-built capacity of all the major channels and swales has been verified. They meet or exceed capacity requirements shown in the approved drainage study for this project. 1.All swales are located within the drainage easements as shown on the construction plans. 2.Longitudinal slopes and side-slopes (cross-sections) have been verified. Design criteria requires longitudinal slopes of 2% min. (on vegetated swales) and side-slopes no steeper than 4:1. If these criteria are not met, the certification engineer will write a justification and propose mitigation for each instance or have the issues corrected. If variances to these criteria have previously been approved and are shown on the construction plans, no justification is needed. 3.As-built spot elevations on channels/swales are shown that correspond to spot elevations shown on the approved construction plans. 4.All permanent erosion control measures are installed as shown on the approved construction plans (e.g., drop structures, riprap, TRMs, etc.). (Include pictures and verification of the materials used as part of this verification.) 5.All pans, curbs, storm pipes or other appurtenances appropriately tie into each other in the system. (Pictures at tie-in points suggested.) 6.The minimum freeboard is provided for all channels and swales as shown on the approved construction plans or as identified in the approved drainage study. (Show the freeboard provided on the cross-sections as on the construction plan set or attached as separate documentation.) 7.The low flow portion of all channels or swales is clear of obstructions. (No landscaping, trees, shrubs, sod, etc. infringe on the low flow portion of channels or swales.) 11/19 Detention pond's outlet structure was designed and certified in Fox Grove First Filing's Design. A new 100-yr restrictor plate was installed. Otherwise the existing outlet structure has already been certified. No major swales/channels were designed with this project. All swales are intended to convey small amounts of flow and therefore were not designed to meet a certain freeboard/flow criteria. The stormwater runoff to these swales is from small areas of landscaping and is considered negligible. Elevation C AB WQCV: 4916.85 These items were certified with the 1st Filing and were not revised with the 2nd Filing. Minimum as-built slope in minor swale is 1.6%. We have no engineering concern, and the long. slope matches the design. Scour stop for small culvert under sidewalk was not installed. It was deemed unnecessary due to the limited flows expected. Scour stop on main pipeline was installed Page 4 III.Storm Pipes (aka storm drains) - FCSCM Ch. 9, Sec. 4.0 A. Storm Drain Pipe Capacity: The as-built capacity of all pipes installed on this project has been verified and meets or exceeds the capacity requirements shown in the approved drainage study for this project. 1.All storm drain pipe sizes and materials have been verified and are in conformance with the approved construction plans. (Indicate on the plan and profile sheets that they have been verified.) Material and size substitutions must be approved prior to installation. If a pipe size or material was changed during construction, the certification engineer must attach the approval documents or supply them with this certification. Approval documents must include a calculation documenting the capacity equivalency (equal or greater) of the substituted size. 2.The longitudinal slope of the pipe is as shown on the approved construction plans. The acceptable minimum slope is 0.4%. All slopes flatter than the designed slope on the construction plans must be justified with capacity calculations on an attached sheet. 3.The as-built invert elevations have been verified and are shown on the plan and profile sheets of the approved construction plans. B.Storm Drain Pipe Installation Requirements: All pipes are installed in accordance with the approved construction plans and construction specifications. 1.The minimum cover requirements for all pipes have been met as shown on the approved construction plans. These will be called out in critical locations. 2.All encasements and clearances as specified on the approved construction plans have been met. 3.Any specific joint types or construction methods specified on the approved construction plans have been met. (List on a separate sheet and attach to this certification.) IV.Concrete Pans - FCSCM Ch. 8, Sec. 2.0 A. Construction/Installation: All concrete pans have been constructed in accordance with the approved construction plans. 1.The concrete pans are the correct size/width as shown on the approved construction plans. 2.The longitudinal slopes of the pans are as shown on the approved construction plans. The certification engineer must justify or mitigate longitudinal slopes less than the minimum of 0.4% unless a flatter slope was approved and is shown on the approved construction plans. Provide mitigation or justification by separate document. 3.The cross-section of the pan is as shown on the construction plans. (Specifically, the pan cross- section is “V” shaped and meets the side slope shown on the detail.) 4.The concrete pans are a minimum of 6 inches thick without reinforcement and a minimum of 4 inches thick with a minimum of 6X6-W14xW14 reinforcement per detail D20B and D20C. (Provide documentation of the reinforcement used if different than shown on the details or on the approved construction plans.) 5.The spot elevations shown on the concrete pan(s) have been verified and are shown on the as- built drawings. 11/19 no changes to storm pipe size or material was proposed by engineer or is known by engineer. All improvements are assumed to be consistent with plans Stormlines flatter than 0.4% are consistent with the approved plans. Clearances are unable to be confirmed but we have no reason to believe they do not meet the approved plans Page 5 V. Storm Drain Inlets - FCSCM Ch. 9, Sec. 3.0 A. Construction/Installation: All storm drain inlets have been constructed in accordance with the approved construction plans and construction specifications. 1.The size and type of inlets are consistent with the inlets shown on the approved construction plan. Indicate by writing “Verified” on each inlet on the plan sheet or list on a separate document the inlet number(s), type and size (length). If the inlet installed is other than the one on the approved construction plan detail sheet, provide the name and source of the detail with justification for equal or better capacity. 2.The size of the inlet opening is consistent with the approved detail. (Check height and width.) 3.The elevation of the grate (if applicable) is at the elevation shown on the street profile or as indicated by a spot elevation on the construction plans. 4.The as-built invert elevations of all pipes entering and leaving the inlet are shown on the plan and profile sheets within construction tolerance of 0.2 feet. If substantially different, provide justification and capacity calculations to show the capacity is not affected or propose mitigation. 5.The as-built size of the inlet box is as shown on the construction plans or an explanation or justification is attached. 6.All Type C, R, 13 and 16 inlet covers are stenciled or stamped with the following designation (or an equivalent): NO DUMPING – DRAINS TO POUDRE RIVER. VI.Culverts - FCSCM Ch. 9, Sec. 4.0 A. Construction/Installation: All culverts have been constructed and/or installed in accordance with the approved construction plans and construction specifications. 1.All culvert sizes have been verified as indicated on the as-built construction plans as correct. 2.The culvert material type for all culverts installed is as on the approved construction plans and is indicated on the as-built plans. 3.The as-built invert “in and out” elevations have been verified and are indicated on the as-built construction plans. 4.The culvert headwalls or wing walls have been installed as shown on the approved construction plans. Headwalls or wing walls may be needed in the as-built conditions onsite if the slopes adjacent to the culvert are greater than 4:1. Please note areas needing stabilization in the certification narrative. An alternative to consider is a turf reinforcement mat (TRM). VII.Sub-Drains A. Construction/Installation: All sub-drains shown on the construction plans have been installed in accordance with those plans and the construction specifications. Sub-drains installed with the sanitary sewer are to be verified on the sanitary sewer plan and profile sheets of the construction plans. (NOTE: Indicate any sub-drains installed after the plans were approved on the as-built plans.) 1.The size of the sub-drains are as approved on the construction plans and are indicated on the as- built plans. 2.The type of sub-drain, in particular the perforated and non-perforated sections of the drain, are as indicated on the approved construction plans. 11/19 No deviations from the inlet detail are known. All inlets grates were observed from the surface to match the design. It is assumed all inlets boxes are consistent with the inlet detail. Rain Garden Subdrain was detailed in Contractor Checklist and pictures. Subdrain looks to be consistent with plans. Page 6 3.The cover requirements per the construction plans are provided. 4.The cleanouts have been installed at the locations shown on the construction plans and are accessible for cleaning. (Cleanouts can be buried a maximum of 6 inches deep with their locations marked.) 5.The backfill materials for sub-drains are as shown on the approved construction plans. (This includes the type, depth and width.) 6.The geo-textile liner completely wraps the sub-drain and the permeable backfill material unless shown otherwise on the approved construction plans. (Sub-drain pipe wrapped in a sock filter material is accepted only if approved prior to installation.) VIII.Curb Cuts A. Construction: All curb cut openings are constructed in accordance with the approved construction plans and construction specifications. 1.The size (width) of the curb cut opening is as shown on the approved construction plans. 2.The curb cut openings tie into a downstream swale, pipe, or other appurtenances with a smooth transition and there no obstructions such as riprap or sod impeding the flow downstream of the curb cut. IX.Sidewalk Culverts & Chases A. Construction/Installation: All sidewalk culverts have been installed at the locations shown on the approved construction plans. 1.The size (width and length) of the culverts are as shown on the approved construction plans. 2.The cover plate is a minimum 5/8-inch galvanized plate bolted to a galvanized angle iron per the detail shown on the approved construction plans or per the City’s detail. 3.The sidewalk culvert invert “in and out” elevations have been verified and are indicated on the as-built plans. 4.The sidewalk culvert opening is as shown on the approved construction plans or per the City’s detail. 5.There is a smooth transition both on the inlet and outlet ends of the sidewalk culvert with no obstructions such as riprap or sod impeding the flow into or out of the sidewalk culvert. X. Site Grading - FCSCM Ch. 8 A. Construction: All common open spaces have been graded in accordance with the approved construction plans. 1.The grading on all common open spaces bordering private lots has been verified as correct and the as-built rear lot corner elevations have been shown on the as-built plans. 11/19 Outlot C has been revised due to changes in backlot corner elevations approved during building permit. Revisions were approved by City. Construction is consistent with approved revisions. Page 7 2.The as-built contours for “overlot grading” are shown on the as-built construction plans for all common open spaces, tracts, outlots, etc. If not in compliance, please attach a narrative describing the situation for noncompliance and when it may be corrected. An escrow for overlot grading may be required. (NOTE: Residential Lot Grading Certification is a separate process from this Overall Site Certification. It is understood that residential lots will be brought to final grade once the foundation is backfilled so they may be lower than the plan shows at this Overall Site Certification stage.) 3.All turf reinforcement mats (TRMs) have been installed as shown on the approved construction plans and the slopes are stabilized. XI.Permanent Erosion Control BMPs - FCSCM Ch. 9, Sec. 7.0 A. Construction: All permanent erosion control BMPs have been installed per the approved construction plans. 1.All riprap has been installed in the locations and sizes indicated on the approved construction plans. 2.All fabric has been installed in the locations and sizes indicated on the approved construction plans. a.All fabric was installed per the details on the approved construction plans. XII.Post-Construction Site Cleanup - FCSCM Ch. 3, Sec. 2.0 A. Construction: All construction debris and obstructions of any kind have been removed from drainage paths. 1.All construction debris has been removed except in staging area(s). 2.All ruts have been smoothed out in all construction areas. 3.All areas needing reseeding have been identified and future stabilization goals have been coordinated with the Erosion Control Inspector and in accordance with FCSCM Vol.2 Chapter 12. Note the area needing stabilization in the narrative. XIII.Certification of LID and Water Quality Facilities - FCSCM Ch. 7 A.Attached are the During Construction Inspection Checklist for Low Impact Development (LID) and other items to be verified during construction, along with pictures and other required documentation. B.Attached is verification of the rain garden and/or sand filter flat surface area(s) and ponding volume(s). This verification includes survey of critical elevations. C.Attached is verification of the underground infiltration required volume(s), weir elevations, orifices, inspection ports and filtering fabric. This verification includes survey of critical elevations. D.All visible LID design features were verified as part of the engineer's site visit. 11/19 Permanent TRM for rain garden overflow was installed and observed in field. Detail of installation is detailing in contractor checklist. Permanent TRM for rain garden overflow was installed and observed in field. Detail of installation is detailing in contractor checklist. Seeded areas look to have grown in at the time of site visit. City to confirm and identify areas needing reseeding as a part of the EC permit. 11/19 Page 8 XIV.Certification of Other Permanent BMPs A.The construction of other permanent BMPs not specifically addressed in this certification is in accordance with the approved plan. This may include grade control structures, rundowns, bridges, stream access/improvements, etc. Please specify other permanent BMPs included on this site: XV. Certification and Erosion Control Measures - FCSCM Ch. 3 A. All temporary erosion control measures shall be removed upon stabilization. If at the time of preparing this certification there are any erosion control measures still remaining on the site, please note them in the narrative and verify that they need to remain at this time. If in doubt as to the need for any control measure, please consult with the Erosion Control Inspector at erosion@fcgov.com. XVI.Statement of Compliance - FCSCM Ch. 3 A. This certification is signed and stamped. By signing this form, the engineer(s) attests that he/she has visited and observed the site, and to the best of his/her knowledge, the as-built conditions of the drainage facilities are as described in the above form and in the enclosed as-built plans. B.Failure to properly disclose all known information could result in the rejection of this certification and prevent the release of any and all Stormwater Utility permit holds on Building Permits and/or Certificates of Occupancy within this development. XVII. Signature and Stamp by a Colorado-Registered Professional Engineer Engineer’s contact information: Name: Email: Phone: Company: Address: PE Stamp 07/27/23 UD UD W W W W W WWWWWW WW W W W W W W W W W W W W W W W W W W W W W W W W W W W W W S S S S S S S S S S S S S S S S S S S S S S S S S S SS S S S S S S S S S S S S S S SS E E E E EE EE EE EE EE E E EE E E E E E E E E E E EE EE E E E E E E E E SB SB SB SB SB SB SBSB E SB SB SB SB SB SB E SB E SB SB SB SB E SB SB SB SB SB E E SB E S W W W W S W S W WWW W VAULT ELEC FES FES FES H2O W S S S HYD VAULT ELEC S H2O W S HYD VAULT ELEC S VAULT ELEC WH2O SS S S D C.O. FES FES S S S S D D S D SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS ST ST ST ST ST ST ST ST ST ST ST ST ST D DSTSTSTSTSTSTST CS CS CS CS CSCSCS CS CS CS CS CS CS CS CS CS CS CS CS CS CS CS CS CS CS CS CS CS CS CSCSCSCS CS CS CS CS CS CS CS CS CS CS CSCS CS SSSS S S S S S S S S S S SSS S S S S S S S S S S S S S S S S S S S S S SSSS S S S HYD D S CONTROL IRR CONTROL IRR CONTROL IRR CONTROL IRR CONTROL IRR CONTROL IRR CS CS CS FES W W W W W W WW LO D LO D LOD LOD LO D LOD LOD SS SS SS SS SS SS SS SS SS SS SS SS SS SS SSSS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS XXXX X X X X X X X X X X X D MH SMH 8" W8" W 8" W 8" W 8" W 8" W 8" W 8" W 8" W S S S S S S SSSSSS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SSSSSSSS VAULT ELEC W X X G MH MH MH MH MH S S S S S W SSS S S W W S S S S W W WWWWWSSSSS S MH MH MH W W W W W W W W W W 9' U T I L I T Y E A S E M E N T 9' U T I L I T Y E A S E M E N T 9' UTILITY EASEMENT 9' UTILITY EASEMENT 9' UTILITY EASEMENT 9' UTILITY EASEMENT 9' UTILITY EASEMENT 9' U T I L I T Y E A S E M E N T 9' U T I L I T Y E A S E M E N T NICKS TAIL DRIVE UTILITY EASEMENT 10' DRY UTILITY EASEMENT TO CITY OF FORT COLLINS REC. NO. 20160050584 RO L L I N S D E N D R I V E FOX GROVE DR VI X E N D R 2' GRAVEL SHOULDERS 6' GRAVEL SHOULDER RAIN GARDEN HUNTSMAN DR 2' CONCRETE PAN EXISTING DETENTION POND 1 EXISTING DETENTION POND 2 10' GRAVEL TRAIL 4' CONCRETE TRAIL 4' CONCRETE TRAIL EXISTING STORM DRAIN & OUTLET STRUCTURE 4' CONCRETE TRAIL 4' CONCRETE TRAIL SUNFLOWER SUBDIVISION (SINGLE FAMILY ) CW SUBTRUST C/O AGUR FOUNDATION INDUSTRIAL DISTRICT (UNDEVELOPED) LOT 1 LEE MLD (UNDEVELOPED) INTERCHANGE BUSINESS PARK GENERAL COMMERCIAL DISTRICT (UNDEVELOPED) FOX GROVE (SINGLE FAMILY ) FE M A 1 0 0 - Y R F L O O D W A Y FEMA 100-YR HIGH RISK FRIN G E FEMA 100-YR HIGH R I S K F R I N G E NATURAL HABITAT BUFFER ZONE NATURAL HABITAT BUFFER ZONE NATURAL HABITAT BUFFER ZONE 53' ROW 30' - 53' ROW 30' - 53' ROW 30' - 53' ROW 30' - 6' U.E. (TYP.) 6' U.E. (TYP.) 6' U.E. (TYP.) 6' U.E. (TYP.) 5' D.G.E. (TYP.) 6' UE 5' D.G.E. (TYP.) 5' D.G.E. (TYP.) 5' D.G.E. (TYP.) 6' U.E. (TYP.) 20' SEWER EASEMENT PER LEE MLD NO. 04-S2309 30' WATERLINE EASEMENT TO EAST LARIMER COUNTY WATER DISTRICT REC. NO. 20160031252 20' DRAINAGE EASEMENT TO CITY OF FORT COLLINS REC. NO. 20160050583 50' SANITARY SEWER, DRAINAGE & ACCESS EASEMENT PER REC. NO. 98090574 20' UTILITY EASEMENT PER REC. NO. 85062072 SHOWN ON REC. NO. 98090574 30' WATERLINE EASEMENT TO BE DEDICATED BY SEPARATE DOCUMENT REC. NO. 20200007383 10' DRY UTILITY EASEMENT REC. NO. 20170029883 30' PUBLIC ACCESS & TRAIL EASEMENT (TYP.) 18' FUTURE TRAIL SECTION 30' PUBLIC ACCESS & TRAIL EASEMENT (TYP.) 10' GRAVEL TRAIL 18' FUTURE TRAIL SECTION ACCESS EASEMENT REC. NO. 20160050584 6' UE 6' UE 4' CONCRETE TRAIL 6' UE SANITARY SEWER LINE A1 SEE SHEET C2.01 LOT 36 LOT 35 LOT 37 LOT 42 LOT 43 LOT 44 LOT 32 LOT 31 LOT 33 LOT 47 LOT 34 LOT 45 LOT 29LOT 30 LOT 46 LOT 5 LOT 4 LOT 7 LOT 6 LOT 38 LOT 39 LOT 40 LOT 41 LOT 23 LOT 26 LOT 24 LOT 22 LOT 27 LOT 25 LOT 19LOT 18LOT 14 LOT 15 LOT 16 LOT 17 LOT 20 LOT 21 LOT 11 LOT 10 LOT 13 LOT 12 LOT 9 LOT 8 LOT 1LOT 2LOT 3 OUTLOT A ACCESS EASEMENT OUTLOT B DRAINAGE & ACCESS EASEMENT LOT 28 SANITARY SEWER LINE A1 SEE SHEET C2.01 SANITARY SEWER LINE A1W SEE SHEET C2.02 STORM LINE 1 SEE SHEET C2.06 STORM LINE 3 SEE SHEET C2.06 STORM LINE 4 SEE SHEET C2.07 STORM LINE 2 SEE SHEET C2.07 STORM LINE 2-1N SEE SHEET C2.07 STORM LINE 2-1S SEE SHEET C2.07 STORM LINE 1 SEE SHEET C2.06 UNDERDRAIN SEE SHEET C2.08 CONCRETE FOREBAY DEPTH GAUGE VI X E N D R I V E CONCRETE WEIR 3' (MIN.) 3' (MIN.) OUTLOT C WATER LINE A SEE SHEET C2.03 WATER LINE B SEE SHEET C2.05 FIRE HYDRANT FIRE HYDRANT EXISTING FIRE HYDRANT SAW CUT (TYP.) 1.5" IRRIGATION METER NOT INSTALLED AT TIME OF RECORD DRAWING Sheet FO X G R O V E S U B D I V I S I O N S E C O N D F I L I N G E N G I N E E R N G I E H T R O N R N FO R T C O L L I N S : 3 0 1 N o r t h H o w e s S t r e e t , S u i t e 1 0 0 , 8 0 5 2 1 GR E E L E Y : 8 2 0 8 t h S t r e e t , 8 0 6 3 1 97 0 . 2 2 1 . 4 1 5 8 no r t h e r n e n g i n e e r i n g . c o m of 30 02/10/2020 C2.00 OV E R A L L U T I L I T Y P L A N 05 NORTH ( IN FEET ) 0 1 INCH = 50 FEET 50 50 100 150 CALL UTILITY NOTIFICATION CENTER OF COLORADO Know what's below. before you dig.Call R EXISTING WATER MAIN PROPOSED WATER MAIN LOWERING PROPOSED STORM SEWER LEGEND: W EXISTING STORM SEWER EXISTING ELECTRIC METER EXISTING WATER METER EXISTING ELECTRIC VAULT EXISTING POWER POLE EXISTING GAS METER EXISTING SANITARY SEWER SS PROPOSED STORM INLET PROPOSED LIGHT POLE PROPOSED CURB & GUTTER PROPOSED SANITARY SEWER PROPOSED FIRE HYDRANT EXISTING FIRE HYDRANT PROPOSED LOTLINE EASEMENT LINE PROPERTY BOUNDARY SPROPOSED SEWER SERVICE EPROPOSED ELECTRIC SERVICE 1.EXISTING UNDERGROUND AND OVERHEAD PUBLIC AND PRIVATE UTILITIES AS SHOWN ARE INDICATED ACCORDING TO THE BEST INFORMATION AVAILABLE TO THE ENGINEER. THE ENGINEER DOES NOT GUARANTEE THE ACCURACY OF SUCH INFORMATION. EXISTING UTILITY MAINS AND SERVICES MAY NOT BE STRAIGHT LINES OR AS INDICATED ON THESE DRAWINGS. THE CONTRACTOR SHALL BE RESPONSIBLE TO CALL ALL UTILITY COMPANIES (PUBLIC AND PRIVATE) PRIOR TO ANY CONSTRUCTION TO VERIFY EXACT UTILITY LOCATIONS. 2.ALL WATER CONSTRUCTION SHALL BE PER EAST LARIMER COUNTY WATER DISTRICT'S CONSTRUCTION STANDARDS, LATEST EDITION. 3.ALL SEWER CONSTRUCTION SHALL BE PER BOXELDER SANITATION DISTRICT'S CONSTRUCTION STANDARDS, LATEST EDITION. 4.MAINTAIN 10' HORIZONTAL AND 18" VERTICAL MINIMUM SEPARATION BETWEEN ALL SANITARY SEWER & WATER MAINS & SERVICES. 5.ALL WATER FITTINGS AND VALVES, EXCLUDING WATER METERS, ARE ONLY GRAPHICALLY REPRESENTED AND ARE NOT TO SCALE. 6.ROTATE ALL SANITARY MANHOLE LIDS TO LIE OUTSIDE OF THE WHEEL PATH. 7.DRY UTILITY CONDUIT TO BE COORDINATED WITH UTILITY PROVIDERS PRIOR TO STREET CONSTRUCTION. 8.ABBREVIATIONS: ACC. = ACCESS EASEMENT E.A.E= EMERGENCY ACCESS EASEMENT U.E. = UTILITY EASEMENT D.G.E. = DRAINAGE & GRADING EASEMENT 9.NO STORAGE OF MATERIALS OR EQUIPMENT SHALL BE ALLOWED IN THE FLOODWAY, WHETHER TEMPORARY (DURING CONSTRUCTION) OR PERMANENT. LANDSCAPING SHALL ALSO MEET THE REQUIREMENTS FOR NO RISE IN THE FLOODWAY. 10.A FLOODPLAIN USE PERMIT IS REQUIRED PRIOR TO PERFORMING ANY WORK WITHIN THE FEMA 100-YEAR FLOODPLAIN. 11.PLEASE SEE SECTION 3.4.1 OF THE LAND USE CODE FOR ALLOWABLE USES WITHIN THE NATURAL HABITAT BUFFER ZONE. 12.THE NATURAL HABITAT BUFFER ZONE IS MEANT TO BE MAINTAINED IN A NATIVE LANDSCAPE. NOTES: PROPOSED ELECTRIC E VAULT ELEC S PROPOSED WATER SERVICE W PROPOSED WATER MAIN C2.00 SS X X D MH SMH S S S S S S SSS SS SS VAULT ELEC W G ELEC T T ELECBRKR ELECBRKR MH MH MH MH MH MH MH KEYMAP I- 2 5 FOX GROVE DR VI X E N D R RECOR D D R A W I N G FES FES S HYD VAULT ELEC S H2O W S HYD VAULT ELEC S VAULT ELEC WH2O S D C.O. S S S S D D S SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS ST ST ST ST ST ST ST ST ST ST ST ST D CS CS CS CSCSCS CS CS CS CS CS CS CS CS CS CS CS CS CS CS CS CS CS CS CSCSCSCS CS CS SSSS S S S S SSS S S S S S S S S S S S S S S S S HYD S FES UD MH STMH 1-1 STA 10+29.56 N: 126857.15 E: 216524.16 STMH 1-4 STA 14+45.93 N: 126859.36 E: 216940.47 STMH 1-5 STA 15+10.15 N: 126923.57 E: 216940.87 INLET 1-2 STA 11+67.85 N: 126854.80 E: 216662.44 INLET 1-3 STA 11+97.85 N: 126854.62 E: 216692.44 INLET 1-5.1 INV. OUT=4919.65 (E) FG=4924.14 INLET 1-6 STA 15+38.93 N: 126933.90 E: 216967.74 FES 1-1 STA 10+00.00 N: 126832.58 E: 216507.74 29.56 LF 30" RCP @ 0.15% 30.00 LF 24" RCP @ 0.15% 248.08 LF 24" RCP @ 0.15% 64.21 LF 30"x19" HORIZONTAL ELLIPTICAL RCP @ 0.15% 28.79 LF 23"x14" HORIZONTAL ELIPITCAL RCP @ 0.15% 5.00 LF 18" RCP @ 0.15% NICKS TAIL DRIVE RO L L I N S D E N D R I V E VI X E N D R LOT 6 LOT 18 LOT 41LOT 8 LOT 14 LOT 15 LOT 16 LOT 17 LOT 24 LOT 20 LOT 21 LOT 27 LOT 25 LOT 38 LOT 39 LOT 36 LOT 37 LOT 42 LOT 43 LOT 7 LOT 9 LOT 40 LOT 26 LOT 10 LOT 19 OUTLOT C 138.30 LF 30" RCP @ 0.15% CORE INTO INLET 1-3 FG=4924.49 FES FES S H2 O W S HYD VA U L T EL E C D C. O . FES FES S S SS SS SS ST ST ST ST ST D CS CS CS CS CS S S S S S HYD S CO N T R O L IR R CO N T R O L IR R CO N T R O L IR R CO N T R O L IR R CO N T R O L IR R CO N T R O L IR R FES W W W W W LOD LOD UD SS SS SS STMH 3-3 STA 11+58.52 N: 126976.26 E: 216462.89 INLET 3-4 STA 12+83.11 N: 127090.72 E: 216512.11 INLET 3-2 STA 10+48.83 N: 126866.96 E: 216453.67 FES 3-1 STA 10+00.01 N: 126827.04 E: 216481.77 48.82 LF 18" HDPE @ 0.20% 124.5 9 L F 1 8 " R C P @ 0 . 2 0 % 109.69 LF 18" HDPE @ 0 . 2 0 % STORM LINE 1 SEE SHEET C2.06 STORM LINE 4 SEE SHEET C2.06 LOT 14 LOT 9 LOT 11 LOT 10 LOT 13 LOT 12 4905 4910 4915 4920 4925 4930 4935 4940 4905 4910 4915 4920 4925 4930 4935 4940 9+50 10+00 11+00 12+00 13+00 14+00 15+00 15+75 IN L E T 1 - 6 ST A 1 5 + 3 8 . 9 3 FL . E L 4 9 2 4 . 0 ± IN V . O U T 4 9 1 9 . 6 9 ( W ) 28.79 LF 23"x14" HORIZONTAL ELLIPTICAL RCP @ 0.15% 64.21 LF 30"x19" HORIZONTAL ELLIPTICAL @ 0.15% ST M H 1 - 4 ST A 1 4 + 4 5 . 9 3 RI M 4 9 2 4 . 9 ± IN V . I N 4 9 1 9 . 5 5 ( N ) IN V . O U T 4 9 1 9 . 5 5 ( W ) ST M H 1 - 5 ST A 1 5 + 1 0 . 1 5 RI M 4 9 2 4 . 3 ± IN V . I N 4 9 1 9 . 6 4 ( E ) IN V . I N 4 9 1 9 . 6 4 ( W ) IN V . O U T 4 9 1 9 . 6 4 ( S ) 248.08 LF 24" RCP @ 0.15% IN L E T 1 - 3 ST A 1 1 + 9 7 . 8 5 FL . E L 4 9 2 4 . 3 ± IN V . I N 4 9 1 9 . 1 8 ( E ) IN V . O U T 4 9 1 9 . 1 8 ( W ) 30.00 LF 24" RCP @ 0.15% IN L E T 1 - 2 ST A 1 1 + 6 7 . 8 5 FL . E L 4 9 2 4 . 3 ± IN V . I N 4 9 1 9 . 1 3 ( E ) IN V . O U T 4 9 1 9 . 1 3 ( W ) 138.30 LF 30" RCP @ 0.15% ST M H 1 - 1 ST A 1 0 + 2 9 . 5 6 RI M 4 9 2 5 . 0 ± IN V . I N 4 9 1 8 . 9 2 ( E ) IN V . O U T 4 9 1 8 . 9 2 ( S W ) 29.56 LF 30" RCP @ 0.15% FE S 1 - 1 ST A 1 0 + 0 0 . 0 0 IN V . 4 9 1 8 . 8 8 ( N E ) 8" PVC STA.=15+20.88 INV.=4912.16 WATER LINE LOWERING 8" PVC STA.=15+31.62 INV.=4917.28 18" 18" 8" PVC STA.=11+92.85 INV.=4916.76 PRIVATE PUBLIC PRIVATE PUBLIC 100-YR HGL PROPOSED GRADE EXISTING GROUND 4905 4910 4915 4920 4925 4930 4935 4940 4905 4910 4915 4920 4925 4930 4935 4940 9+50 10+00 11+00 12+00 13+00 IN L E T 3 - 4 ST A 1 2 + 8 3 . 1 1 FL . E L 4 9 2 5 . 6 ± IN V . O U T 4 9 1 9 . 4 5 ( S W ) 124.59 LF 18" RCP @ 0.20% ST M H 3 - 3 ST A 1 1 + 5 8 . 5 2 RI M 4 9 2 7 . 1 ± IN V . I N 4 9 1 9 . 2 0 ( N E ) IN V . O U T 4 9 1 9 . 2 0 ( S ) 109.69 LF 18" HDPE @ 0.20% IN L E T 3 - 2 ST A 1 0 + 4 8 . 8 3 FL . E L 4 9 2 2 . 1 ± IN V . I N 4 9 1 8 . 9 8 ( N ) IN V . O U T 4 9 1 8 . 9 8 ( S E ) 48.82 LF 18" HDPE @ 0.20% FE S 3 - 1 ST A 1 0 + 0 0 . 0 1 IN V . 4 9 1 8 . 8 8 ( N W ) 8" PVC STA.=12+28.17 INV.=4915.98 9.4" 8" PVC STA.=12+03.58 INV.=4921.79 PRIVATE PUBLIC 100-YR HGL PROPOSED GRADE EXISTING GROUND Sheet FO X G R O V E S U B D I V I S I O N S E C O N D F I L I N G E N G I N E E R N G I E H T R O N R N FO R T C O L L I N S : 3 0 1 N o r t h H o w e s S t r e e t , S u i t e 1 0 0 , 8 0 5 2 1 GR E E L E Y : 8 2 0 8 t h S t r e e t , 8 0 6 3 1 97 0 . 2 2 1 . 4 1 5 8 no r t h e r n e n g i n e e r i n g . c o m of 30 02/10/2020 C2.06 PL A N A N D P R O F I L E S ST O R M L I N E 1 A N D 3 11 EXISTING WATER MAIN PROPOSED WATER MAIN LOWERING PROPOSED STORM SEWER LEGEND: W EXISTING STORM SEWER EXISTING ELECTRIC METER EXISTING WATER METER EXISTING ELECTRIC VAULT EXISTING POWER POLE EXISTING GAS METER EXISTING SANITARY SEWER SS PROPOSED STORM INLET PROPOSED LIGHT POLE PROPOSED CURB & GUTTER PROPOSED SANITARY SEWER PROPOSED FIRE HYDRANT EXISTING FIRE HYDRANT PROPOSED LOTLINE EASEMENT LINE PROPERTY BOUNDARY SPROPOSED SEWER SERVICE EPROPOSED ELECTRIC SERVICE 1.EXISTING UNDERGROUND AND OVERHEAD PUBLIC AND PRIVATE UTILITIES AS SHOWN ARE INDICATED ACCORDING TO THE BEST INFORMATION AVAILABLE TO THE ENGINEER. THE ENGINEER DOES NOT GUARANTEE THE ACCURACY OF SUCH INFORMATION. EXISTING UTILITY MAINS AND SERVICES MAY NOT BE STRAIGHT LINES OR AS INDICATED ON THESE DRAWINGS. THE CONTRACTOR SHALL BE RESPONSIBLE TO CALL ALL UTILITY COMPANIES (PUBLIC AND PRIVATE) PRIOR TO ANY CONSTRUCTION TO VERIFY EXACT UTILITY LOCATIONS. 2.ALL WATER CONSTRUCTION SHALL BE PER EAST LARIMER COUNTY WATER DISTRICT'S CONSTRUCTION STANDARDS, LATEST EDITION. 3.ALL SEWER CONSTRUCTION SHALL BE PER BOXELDER SANITATION DISTRICT'S CONSTRUCTION STANDARDS, LATEST EDITION. 4.MAINTAIN 10' HORIZONTAL AND 18" VERTICAL MINIMUM SEPARATION BETWEEN ALL SANITARY SEWER & WATER MAINS & SERVICES. 5.ALL WATER FITTINGS AND VALVES, EXCLUDING WATER METERS, ARE ONLY GRAPHICALLY REPRESENTED AND ARE NOT TO SCALE. 6.ROTATE ALL SANITARY MANHOLE LIDS TO LIE OUTSIDE OF THE WHEEL PATH. 7.DRY UTILITY CONDUIT TO BE COORDINATED WITH UTILITY PROVIDERS PRIOR TO STREET CONSTRUCTION. 8.ABBREVIATIONS: ACC. = ACCESS EASEMENT E.A.E= EMERGENCY ACCESS EASEMENT U.E. = UTILITY EASEMENT D.G.E. = DRAINAGE & GRADING EASEMENT 9.NO STORAGE OF MATERIALS OR EQUIPMENT SHALL BE ALLOWED IN THE FLOODWAY, WHETHER TEMPORARY (DURING CONSTRUCTION) OR PERMANENT. LANDSCAPING SHALL ALSO MEET THE REQUIREMENTS FOR NO RISE IN THE FLOODWAY. 10.A FLOODPLAIN USE PERMIT IS REQUIRED PRIOR TO PERFORMING ANY WORK WITHIN THE FEMA 100-YEAR FLOODPLAIN. 11.PLEASE SEE SECTION 3.4.1 OF THE LAND USE CODE FOR ALLOWABLE USES WITHIN THE NATURAL HABITAT BUFFER ZONE. 12.THE NATURAL HABITAT BUFFER ZONE IS MEANT TO BE MAINTAINED IN A NATIVE LANDSCAPE. NOTES: PROPOSED ELECTRIC E VAULT ELEC S PROPOSED WATER SERVICE W PROPOSED WATER MAIN SS X X D MH SMH S S S S S S SSS SS SS VAULT ELEC W G ELEC T T ELECBRKR ELECBRKR MH MH MH MH MH MH MH KEYMAP I- 2 5 FOX GROVE DR VI X E N D R ( IN FEET ) 0 1 INCH = 50 FEET 50 50 100 150 CALL UTILITY NOTIFICATION CENTER OF COLORADO Know what's below. before you dig.Call R NORTH NORTH STORM LINE 3STORM LINE 1 PROFILE SCALE: VERT. 1"=5' HORIZ. 1"=50' PROFILE SCALE: VERT. 1"=5' HORIZ. 1"=50' STORM 1 STORM 3 RECOR D D R A W I N G RECOR D D R A W I N G SS SS SS SS SS SS SS SS STMH (7' DIA.) 2-1 STA 10+85.14 N: 126405.44 E: 216714.14 ST 2-2 STA 12+52.45 N: 126404.41 E: 216881.44 FES 2 STA 10+00.00 N: 126382.46 E: 216632.16 85.14 LF 3 0 " R C P @ 0 . 7 5 % FOX GROVE DR STORM LINE 2S SEE SHEET C2.07 STORM LINE 2N SEE SHEET C2.07 UNDERDRAIN SEE SHEET C2.08 OUTLOT B DRAINAGE & ACCESS EASEMENT LOT 28LOT 31 LOT 29LOT 30 LOT 3 LOT 1LOT 2 LOT 32 LOT 47 VAULT ELEC FES S S D SS SS SS SS SS SS SS SS SS ST ST ST ST ST CS CS CS CS CS CSCS CS S S SSSS S S S D CS CS 167.31 LF 24" RCP @ 0.50% INLET 2-1N STA 10+31.33 N: 126430.31 E: 216733.21 31.33 LF 24" RCP @ 2.00% STMH (7' DIA.) 2-1 STA 10+00.00 N: 126405.44 E: 216714.14 FO X G R O V E D R STORM LINE 2 SEE SHEET C2.07 STORM LINE 2S SEE SHEET C2.07 UNDERDAIN SEE SHEET C2.08 OUTLOT B DRAINAGE & ACCESS EASEMENT LOT 31 LOT 29 LOT 30 LOT 3 LOT 2 VA U L T EL E C FES S S D SSSS SS SS SS SS ST ST ST ST CS CS CS CS CS S S S S S INLET 2-1S STA 10+12.61 N: 126392.84 E: 216713.99 12.61 LF 24" RCP @ 2.00% STMH (7' DIA.) 2-1 STA 10+00.00 N: 126405.44 E: 216714.14 FO X G R O V E D R STORM LINE 2 SEE SHEET C2.07 STORM LINE 2N SEE SHEET C2.07 UNDERDRAIN SEE SHEET C2.08 OUTLOT B DRAINAGE & ACCESS EASEMENT LOT 31 LOT 29 LOT 30 LOT 3 LOT 2 VA U L T EL E C FES S S D SSSS SS SS SS SS ST ST ST ST CS CS CS CS CS S S S S S S SS SS 20.23 LF 12" HDPE @ 1.49% NI C K S T A I L D R I V E STORM LINE 3 SEE SHEET C2.06 STORM LINE 1 SEE SHEET C2.06 UNDERDRAIN SEE SHEET C2.08 FES 4-2 STA 10+20.23 N: 126957.84 E: 216415.00 FES 4-1 STA 10+00.00 N: 126939.89 E: 216424.32 LOT 7 LOT 9 LOT 10 FES FES S H2 O W S D C. O . FES FES S SS ST ST ST ST D CS CS S S S FES W W 4905 4910 4915 4920 4925 4930 4935 4940 4905 4910 4915 4920 4925 4930 4935 4940 9+50 10+00 11+00 12+00 13+00 FE S 2 ST A 1 0 + 0 0 . 0 0 IN V . 4 9 1 6 . 0 0 ( E ) 85.14 LF 30" RCP @ 0.7 5 % ST M H ( 7 ' D I A . ) 2 - 1 ST A 1 0 + 8 5 . 1 4 RI M 4 9 2 2 . 8 ± IN V . I N 4 9 1 6 . 6 4 ( E ) IN V . I N 4 9 1 6 . 6 4 ( N E ) IN V . I N 4 9 1 6 . 6 4 ( S ) IN V . O U T 4 9 1 6 . 6 4 ( W ) 167.31 LF 24" RCP @ 0.50% ST 2 - 2 (T I E I N T O E X I S T I N G P I P E ) ST A 1 2 + 5 2 . 4 5 RI M 4 9 1 9 . 9 ± IN V . O U T 4 9 1 7 . 4 8 ( W ) PUBLIC 100-YR HGL PROPOSED GRADE EXISTING GROUND 4905 4910 4915 4920 4925 4930 4935 4940 4905 4910 4915 4920 4925 4930 4935 4940 9+50 10+00 10+50 ST M H ( 7 ' D I A . ) 2 - 1 ST A 1 0 + 0 0 . 0 0 RI M 4 9 2 2 . 8 ± IN V . I N 4 9 1 6 . 6 4 ( E ) IN V . I N 4 9 1 6 . 6 4 ( N E ) IN V . I N 4 9 1 6 . 6 4 ( S ) IN V . O U T 4 9 1 6 . 6 4 ( W ) 31.33 LF 24" RCP @ 2.00% IN L E T 2 - 1 N ST A 1 0 + 3 1 . 3 3 FL . E L 4 9 2 2 . 5 ± IN V . O U T 4 9 1 7 . 2 7 ( S W ) 8" PVC STA.=10+12.52 INV.=4910.96 WATER LINE LOWERING 8" PVC STA.=10+25.06 INV.=4914.73 18" PUBLIC 100-YR HGL PROPOSED GRADE EXISTING GROUND 4905 4910 4915 4920 4925 4930 4935 4940 4905 4910 4915 4920 4925 4930 4935 4940 9+5010+0011+00 ST M H ( 7 ' D I A . ) 2 - 1 ST A 1 0 + 0 0 . 0 0 RI M 4 9 2 2 . 8 ± IN V . I N 4 9 1 6 . 6 4 ( E ) IN V . I N 4 9 1 6 . 6 4 ( N E ) IN V . I N 4 9 1 6 . 6 4 ( S ) IN V . O U T 4 9 1 6 . 6 4 ( W ) 12.61 LF 24" RCP @ 2.00% IN L E T 2 - 1 S ST A 1 0 + 1 2 . 6 1 FL . E L 4 9 2 2 . 3 ± IN V . O U T 4 9 1 6 . 9 0 ( N ) PUBLIC 100-YR HGL 4905 4910 4915 4920 4925 4930 4935 4940 4905 4910 4915 4920 4925 4930 4935 4940 9+50 10+00 10+50 FE S 4 - 1 ST A 1 0 + 0 0 . 0 0 IN V . 4 9 2 3 . 2 9 ( N W ) 20.23 LF 12" HDPE @ 1.49% FE S 4 - 2 ST A 1 0 + 2 0 . 2 3 IN V . 4 9 2 3 . 5 9 ( S E ) PRIVATE 100-YR HGL Sheet FO X G R O V E S U B D I V I S I O N S E C O N D F I L I N G E N G I N E E R N G I E H T R O N R N FO R T C O L L I N S : 3 0 1 N o r t h H o w e s S t r e e t , S u i t e 1 0 0 , 8 0 5 2 1 GR E E L E Y : 8 2 0 8 t h S t r e e t , 8 0 6 3 1 97 0 . 2 2 1 . 4 1 5 8 no r t h e r n e n g i n e e r i n g . c o m of 30 02/10/2020 C2.07 PL A N A N D P R O F I L E S ST O R M L I N E 2 , 2 N , 2 S , & 4 12 SS X X D MH SMH S S S S S S SSS SS SS VAULT ELEC W G ELEC T T ELECBRKR ELECBRKR MH MH MH MH MH MH MH KEYMAP I- 2 5 FOX GROVE DR VI X E N D R ( IN FEET ) 0 1 INCH = 50 FEET 50 50 100 150 CALL UTILITY NOTIFICATION CENTER OF COLORADO Know what's below. before you dig.Call R NORTH STORM LINE 2 PROFILE SCALE: VERT. 1"=5' HORIZ. 1"=50' STORM 2N STORM 4 EXISTING WATER MAIN PROPOSED WATER MAIN LOWERING PROPOSED STORM SEWER LEGEND: W EXISTING STORM SEWER EXISTING ELECTRIC METER EXISTING WATER METER EXISTING ELECTRIC VAULT EXISTING POWER POLE EXISTING GAS METER EXISTING SANITARY SEWER SS PROPOSED STORM INLET PROPOSED LIGHT POLE PROPOSED CURB & GUTTER PROPOSED SANITARY SEWER PROPOSED FIRE HYDRANT EXISTING FIRE HYDRANT PROPOSED LOTLINE EASEMENT LINE PROPERTY BOUNDARY SPROPOSED SEWER SERVICE EPROPOSED ELECTRIC SERVICE 1.EXISTING UNDERGROUND AND OVERHEAD PUBLIC AND PRIVATE UTILITIES AS SHOWN ARE INDICATED ACCORDING TO THE BEST INFORMATION AVAILABLE TO THE ENGINEER. THE ENGINEER DOES NOT GUARANTEE THE ACCURACY OF SUCH INFORMATION. EXISTING UTILITY MAINS AND SERVICES MAY NOT BE STRAIGHT LINES OR AS INDICATED ON THESE DRAWINGS. THE CONTRACTOR SHALL BE RESPONSIBLE TO CALL ALL UTILITY COMPANIES (PUBLIC AND PRIVATE) PRIOR TO ANY CONSTRUCTION TO VERIFY EXACT UTILITY LOCATIONS. 2.ALL WATER CONSTRUCTION SHALL BE PER EAST LARIMER COUNTY WATER DISTRICT'S CONSTRUCTION STANDARDS, LATEST EDITION. 3.ALL SEWER CONSTRUCTION SHALL BE PER BOXELDER SANITATION DISTRICT'S CONSTRUCTION STANDARDS, LATEST EDITION. 4.MAINTAIN 10' HORIZONTAL AND 18" VERTICAL MINIMUM SEPARATION BETWEEN ALL SANITARY SEWER & WATER MAINS & SERVICES. 5.ALL WATER FITTINGS AND VALVES, EXCLUDING WATER METERS, ARE ONLY GRAPHICALLY REPRESENTED AND ARE NOT TO SCALE. 6.ROTATE ALL SANITARY MANHOLE LIDS TO LIE OUTSIDE OF THE WHEEL PATH. 7.DRY UTILITY CONDUIT TO BE COORDINATED WITH UTILITY PROVIDERS PRIOR TO STREET CONSTRUCTION. 8.ABBREVIATIONS: ACC. = ACCESS EASEMENT E.A.E= EMERGENCY ACCESS EASEMENT U.E. = UTILITY EASEMENT D.G.E. = DRAINAGE & GRADING EASEMENT 9.NO STORAGE OF MATERIALS OR EQUIPMENT SHALL BE ALLOWED IN THE FLOODWAY, WHETHER TEMPORARY (DURING CONSTRUCTION) OR PERMANENT. LANDSCAPING SHALL ALSO MEET THE REQUIREMENTS FOR NO RISE IN THE FLOODWAY. 10.A FLOODPLAIN USE PERMIT IS REQUIRED PRIOR TO PERFORMING ANY WORK WITHIN THE FEMA 100-YEAR FLOODPLAIN. 11.PLEASE SEE SECTION 3.4.1 OF THE LAND USE CODE FOR ALLOWABLE USES WITHIN THE NATURAL HABITAT BUFFER ZONE. 12.THE NATURAL HABITAT BUFFER ZONE IS MEANT TO BE MAINTAINED IN A NATIVE LANDSCAPE. NOTES: PROPOSED ELECTRIC E VAULT ELEC S PROPOSED WATER SERVICE W PROPOSED WATER MAIN NORTH STORM LINE 2-1N NORTH STORM LINE 2-1S NORTH STORM LINE 4 PROFILE SCALE: VERT. 1"=5' HORIZ. 1"=50' PROFILE SCALE: VERT. 1"=5' HORIZ. 1"=50' PROFILE SCALE: VERT. 1"=5' HORIZ. 1"=50' STORM 2 STORM 2S RECOR D D R A W I N G SS SS SS SS SS SS SS UD UD NI C K S T A I L D R I V E ROLLINS DEN DRIVE UNDERDRAIN COUPLING UD1 STA 14+84.17 N: 126700.82 E: 216511.64 CLEANOUT UD2 STA 16+17.68 N: 126833.51 E: 216496.87 OUTFALL 8-1 (EXISTING) STA 11+04.95 N: 126321.80 E: 216524.75 FES 8 (EXISTING) STA 10+00.00 N: 126322.71 E: 216418.82 (105.94 LF 18" RCP @ 0.42%) 379.24 LF 4" PVC @ 0.20% 133.51 LF 4" PERFORATED PVC @ 0.20% STORM LINE 1 SEE SHEET C2.06 STORM LINE 3 SEE SHEET C2.06 STORM LINE 4 SEE SHEET C2.07 STORM LINE 2 SEE SHEET C2.07 RAINGARDEN CONCRETE WEIR OUTLOT B DRAINAGE & ACCESS EASEMENT LOT 6LOT 4 LOT 7LOT 5 LOT 9 LOT 10 LOT 14 LOT 15 LOT 13 LOT 12 LOT 11 LOT 8 FES FES FES H2 O W H VA U L T EL E C S H2 O W S HYD VA U L T EL E C S S D C. O . FES FES S S SS SS SS SS SS SSSSSSSSSSSSSSSS ST ST ST ST ST ST ST D CS CS CS CS CS CS CS CS CS CS CS CSSSSS S S S S S S S HYD D S CO N T R O L IR R FES W W 4905 4910 4915 4920 4925 4930 4935 4940 4905 4910 4915 4920 4925 4930 4935 4940 9+50 10+00 11+00 12+00 13+00 14+00 15+00 16+00 16+50 (105.94 LF 18" RCP @ 0.42%) OU T F A L L 8 - 1 ( E X I S T I N G ) ST A 1 1 + 0 4 . 9 5 RI M 4 9 1 8 . 0 ± IN V . I N 4 9 1 5 . 0 2 ( N ) IN V . O U T 4 9 1 5 . 0 2 ( W ) FE S 8 ( E X I S T I N G ) ST A 1 0 + 0 0 . 0 0 IN V . 4 9 1 4 . 5 7 ( E ) 379.24 LF 4" PVC @ 0.20% UN D E R D R A I N C O U P L I N G U D 1 ST A 1 4 + 8 4 . 1 7 FL . E L 4 9 1 6 . 1 ± IN V . I N 4 9 1 5 . 7 8 ( N ) IN V . O U T 4 9 1 5 . 7 8 ( S ) 133.51 LF 4" PERFORATED PVC @ 0.20% CL E A N O U T U D 2 ST A 1 6 + 1 7 . 6 8 RI M 4 9 1 9 . 3 ± IN V . O U T 4 9 1 6 . 0 5 ( S ) RAINGARDEN CONTRACTOR TO VERIFY LOCATION PRIOR TO CONSTRUCTION.PRIVATE Sheet FO X G R O V E S U B D I V I S I O N S E C O N D F I L I N G E N G I N E E R N G I E H T R O N R N FO R T C O L L I N S : 3 0 1 N o r t h H o w e s S t r e e t , S u i t e 1 0 0 , 8 0 5 2 1 GR E E L E Y : 8 2 0 8 t h S t r e e t , 8 0 6 3 1 97 0 . 2 2 1 . 4 1 5 8 no r t h e r n e n g i n e e r i n g . c o m of 30 02/10/2020 C2.08 PL A N A N D P R O F I L E UN D E R D R A I N 13 SS X X D MH SMH S S S S S S SSS SS SS VAULT ELEC W G ELEC T T ELECBRKR ELECBRKR MH MH MH MH MH MH MH KEYMAP I- 2 5 FOX GROVE DR VI X E N D R ( IN FEET ) 0 1 INCH = 50 FEET 50 50 100 150 CALL UTILITY NOTIFICATION CENTER OF COLORADO Know what's below. before you dig.Call R NORTH UNDERDRAIN UNDERDRAIN EXISTING WATER MAIN PROPOSED WATER MAIN LOWERING PROPOSED STORM SEWER LEGEND: W EXISTING STORM SEWER EXISTING ELECTRIC METER EXISTING WATER METER EXISTING ELECTRIC VAULT EXISTING POWER POLE EXISTING GAS METER EXISTING SANITARY SEWER SS PROPOSED STORM INLET PROPOSED LIGHT POLE PROPOSED CURB & GUTTER PROPOSED SANITARY SEWER PROPOSED FIRE HYDRANT EXISTING FIRE HYDRANT PROPOSED LOTLINE EASEMENT LINE PROPERTY BOUNDARY SPROPOSED SEWER SERVICE EPROPOSED ELECTRIC SERVICE 1.EXISTING UNDERGROUND AND OVERHEAD PUBLIC AND PRIVATE UTILITIES AS SHOWN ARE INDICATED ACCORDING TO THE BEST INFORMATION AVAILABLE TO THE ENGINEER. THE ENGINEER DOES NOT GUARANTEE THE ACCURACY OF SUCH INFORMATION. EXISTING UTILITY MAINS AND SERVICES MAY NOT BE STRAIGHT LINES OR AS INDICATED ON THESE DRAWINGS. THE CONTRACTOR SHALL BE RESPONSIBLE TO CALL ALL UTILITY COMPANIES (PUBLIC AND PRIVATE) PRIOR TO ANY CONSTRUCTION TO VERIFY EXACT UTILITY LOCATIONS. 2.ALL WATER CONSTRUCTION SHALL BE PER EAST LARIMER COUNTY WATER DISTRICT'S CONSTRUCTION STANDARDS, LATEST EDITION. 3.ALL SEWER CONSTRUCTION SHALL BE PER BOXELDER SANITATION DISTRICT'S CONSTRUCTION STANDARDS, LATEST EDITION. 4.MAINTAIN 10' HORIZONTAL AND 18" VERTICAL MINIMUM SEPARATION BETWEEN ALL SANITARY SEWER & WATER MAINS & SERVICES. 5.ALL WATER FITTINGS AND VALVES, EXCLUDING WATER METERS, ARE ONLY GRAPHICALLY REPRESENTED AND ARE NOT TO SCALE. 6.ROTATE ALL SANITARY MANHOLE LIDS TO LIE OUTSIDE OF THE WHEEL PATH. 7.DRY UTILITY CONDUIT TO BE COORDINATED WITH UTILITY PROVIDERS PRIOR TO STREET CONSTRUCTION. 8.ABBREVIATIONS: ACC. = ACCESS EASEMENT E.A.E= EMERGENCY ACCESS EASEMENT U.E. = UTILITY EASEMENT D.G.E. = DRAINAGE & GRADING EASEMENT 9.NO STORAGE OF MATERIALS OR EQUIPMENT SHALL BE ALLOWED IN THE FLOODWAY, WHETHER TEMPORARY (DURING CONSTRUCTION) OR PERMANENT. LANDSCAPING SHALL ALSO MEET THE REQUIREMENTS FOR NO RISE IN THE FLOODWAY. 10.A FLOODPLAIN USE PERMIT IS REQUIRED PRIOR TO PERFORMING ANY WORK WITHIN THE FEMA 100-YEAR FLOODPLAIN. 11.PLEASE SEE SECTION 3.4.1 OF THE LAND USE CODE FOR ALLOWABLE USES WITHIN THE NATURAL HABITAT BUFFER ZONE. 12.THE NATURAL HABITAT BUFFER ZONE IS MEANT TO BE MAINTAINED IN A NATIVE LANDSCAPE. NOTES: PROPOSED ELECTRIC E VAULT ELEC S PROPOSED WATER SERVICE W PROPOSED WATER MAIN PROFILE SCALE: VERT. 1"=5' HORIZ. 1"=50' RECOR D D R A W I N G LO D LO D LOD LOD LO D LOD LOD UD UD E E E E EE EE EE EE EE E E EE E E E E E E E E E E EE EE E E E E E E E E SB SB SB SB SB SB SBSB E SB SB SB SB SB SB E SB E SB SB SB SB E SB SB SB SB SB E E SB E XXXX X X X X X X X X X X X D MH SMH 8" W8" W 8" W 8" W 8" W 8" W 8" W 8" W 8" W S S S S S S VAULT ELEC W X X G MH MH MH MH MH MH MH MH 9' U T I L I T Y E A S E M E N T 9' U T I L I T Y E A S E M E N T 9' UTILITY EASEMENT 9' UTILITY EASEMENT 9' UTILITY EASEMENT 9' UTILITY EASEMENT 9' UTILITY EASEMENT 9' U T I L I T Y E A S E M E N T 9' U T I L I T Y E A S E M E N T PROPOSED INLETS NICKS TAIL DRIVE EXISTING 10' DRY UTILITY EASEMENT ACCESS EASEMENT REC. NO. 20160050584 10' DRY UTILITY EASEMENT TO CITY OF FORT COLLINS REC. NO. 20160050585 RO L L I N S D E N D R I V E VI X E N D R 2' GRAVEL SHOULDERS RAIN GARDEN EXISTING DETENTION POND 1 2' CONCRETE PAN SUNFLOWER SUBDIVISION (SINGLE FAMILY ) CW SUBTRUST C/O AGUR FOUNDATION INDUSTRIAL DISTRICT (UNDEVELOPED) LOT 1 LEE MLD (UNDEVELOPED) INTERCHANGE BUSINESS PARK GENERAL COMMERCIAL DISTRICT (UNDEVELOPED) FOX GROVE (SINGLE FAMILY ) EXISTING DETENTION POND 2 FE M A 1 0 0 - Y R F L O O D W A Y FEM A 1 0 0 - Y R H I G H R I S K F R I N G E EXISTING 2' CONCRETE PAN 4' CONCRETE TRAIL FOX GROVE DR EXISTING OUTLET STRUCTURE 100-YR POND EXTENTS 100-YR CONCRETE OVERFLOW WEIR 4' CONCRETE TRAIL 10' GRAVEL TRAIL 4' CONCRETE TRAIL 4.8% 0.0% 7.7 % (0 . 5 % ) 13. 5 % 14.8% 22.1% 0.0% 8.5% 3: 1 2. 0 % 4:1 6:1 4:1 3.1% 4.1% 3.9% 4: 1 4:1 5.5% 4:1 4:1 7:1 5:1 5:1 5:1 2.2% 4: 1 4:1 3: 1 2: 1 3: 1 8. 3 % 4: 1 2.6% NATURAL HABITAT BUFFER ZONE NATURAL HABITAT BUFFER ZONE NATURAL HABITAT BUFFER ZONE 53' ROW 30' - 53' ROW 30' - 53' ROW 30' - 53' ROW 30' - 6' U.E. (TYP.) 6' UE 5' D.G.E. (TYP.) 5' U.E. (TYP.) 20' SEWER EASEMENT PER LEE MLD NO. 04-S2309 30' WATERLINE EASEMENT TO EAST LARIMER COUNTY WATER DISTRICT REC. NO. 20160031252 20' DRAINAGE EASEMENT TO CITY OF FORT COLLINS REC. NO. 20160050583 50' SANITARY SEWER, DRAINAGE & ACCESS EASEMENT PER REC. NO. 98090574 20' UTILITY EASEMENT PER REC. NO. 85062072 SHOWN ON REC. NO. 98090574 30' WATERLINE EASEMENT BY SEPARATE DOCUMENT REC. NO. 20200007383 30' PUBLIC ACCESS & TRAIL EASEMENT (TYP.) 18' FUTURE TRAIL SECTION 30' PUBLIC ACCESS & TRAIL EASEMENT (TYP.) 18' FUTURE TRAIL SECTION 10' GRAVEL TRAIL 6' GRAVEL SHOULDER 4' CONCRETE TRAIL 4' CONCRETE TRAIL FEMA 100-YR HIGH RISK FRINGE FEMA 100-YR HIGH RISK FRINGE 5:1 4:1 6. 4 % 7. 1 % 7.4 % 3.7 % 8. 8 % 10.5% 2.4 % 5.4% 2.3 % 11 . 6 % 5. 0 % 8. 0 % 5.1% 25.1% 3.5% 5.3%8.6% 28.3 % (0 . 9 % ) 6' U.E. (TYP.) LOT 11 LOT 10 LOT 5 LOT 13 LOT 12 LOT 19 LOT 38 LOT 39 LOT 36 LOT 35 LOT 37 LOT 42 LOT 43 LOT 44 LOT 32 LOT 28LOT 31 LOT 33 LOT 47 LOT 34 LOT 45 LOT 29 LOT 4 LOT 7 LOT 9 LOT 40 LOT 30 LOT 1LOT 2 LOT 23 LOT 26 LOT 6 LOT 18 LOT 41 LOT 3 LOT 8 LOT 14 LOT 15 LOT 16 LOT 17 LOT 24 LOT 20 LOT 21 LOT 22 LOT 27 LOT 25 LOT 46 OUTLOT B DRAINAGE & ACCESS EASEMENT OUTLOT A ACCESS EASEMENT BERM 4: 1 4:1 6:1 4:1 10 : 1 18 : 1 CONCRETE FOREBAY INTERIM REGIONAL TRAIL SEE SHEET C3.03 INTERIM REGIONAL TRAIL SEE SHEET C3.03 1. 0 % 25.45 25.15 25.53 25.21 24.80 24.3 9 23.52 23.18 23.27 23.55 23.83 24.25 26.33 25.1326.9525.59 28. 0 4 25.40 25.68 28. 3 2 28. 5 9 25.95 26.27 28.8 0 28.6 9 26.08 25.41 27.0 6 24.87 24.93 25 . 6 3 25.71 25.96 25 . 1 4 24.94 25.4025.6425.9426.2426.48 25.90 27.04 25.90 27.2827.58 26.13 24.9325.79 24.69 24.87 23.00 25.15 25.45 23.00 23.00 25.53 24.18 23.68 23.42 23.45 23.78 24.05 26.32 25.9 9 (25 . 2 2 ) 24.88 22.96 25 . 6 2 24.97 27.55 27.01 26.38 26.18 26.64 27.27 26.84 28.64 29 . 3 7 29 . 1 9 28 . 8 4 28 . 5 9 28 . 2 5 28 . 0 3 27.48 (28.0 7 ) (28.0 0 ) (27.53) (27.35) (26.9 2 ) (26.5 0 ) (26.9 5 ) 26.27 26.25 26.16 25.5 5 24.88 24.70 24.57 24.64 24.81 24.94 25.08 25. 3 0 25.29 25.7326.0526.35 26.71 27.07 (27.7 5 ) 25.70 26.04 25.17 27 . 8 4 22.86 23.00 25.21 27.28 27.26 27 . 7 1 24.45 27 . 8 7 26.68 27.66 26.55 A FG=28.59 TF=29.26 A FG=28.87 TF=29.54 A FG=28.94 TF=29.61 A FG=28.70 TF=29.37 A FG=28.46 TF=29.13 A FG=28.90 TF=29.57 A FG=28.85 TF=29.52 A FG=28.50 TF=29.17 A FG=28.12 TF=28.79 A FG=27.57 TF=28.24 A FG=25.74 TF=26.41 A FG=26.83 TF=27.50 A FG=27.26 TF=27.93 A FG=26.54 TF=27.21 B FG=27.03 TF=27.70 B FG=26.95 TF=27.62 B FG=27.03 TF=27.70 B FG=26.65 TF=27.32 A FG=28.04 TF=28.71 A FG=28.32 TF=28.99 B FG=28.78 TF=29.45 B FG=29.08 TF=29.75 B FG=29.21 TF=29.88 B FG=27.82 TF=28.49 B FG=28.57 TF=29.24 B FG=28.57 TF=29.24 B FG=27.56 TF=28.23 B FG=29.69 TF=30.36 B FG=29.59 TF=30.26 B FG=29.84 TF=30.51 B FG=29.20 TF=29.87 B FG=29.20 TF=29.87 T FG=28.30 TF=28.97 A FG=27.54 TF=28.21 A FG=27.98 TF=28.65 A FG=28.11 TF=28.78 A FG=28.15 TF=28.82 A FG=28.10 TF=28.77 A FG=28.29 TF=28.96 A FG=28.61 TF=29.28 A FG=28.91 TF=29.58 A FG=29.34 TF=30.01 A FG=29.70 TF=30.37 A FG=29.68 TF=30.35 28.58 28.2828.71 27.68 25.51 22.8023 . 2 9 25.54 25.3 5 25.38 23.59 25 . 8 0 27 . 0 6 26.98 25 . 6 2 24.30 25.08 28. 7 2 28 . 3 5 29.1 8 29.20 29 . 4 0 29. 3 3 28.14 28.6 7 28.31 28.84 29 . 0 8 28 . 7 4 28.41 28 . 5 2 28.11 28 . 1 7 27.79 27.60 27 . 9 5 27.3527.6527.9 5 26.90 26.35 27.65 26.35 27.61 26.51 27.24 26.84 26. 5 1 26.64 26.89 26. 7 8 26.01 27.80 28.70 27.0 6 28.0 7 27.3 2 28.6 0 28.2027.71 26.04 26.7 4 25.6 1 25 . 5 0 26 . 5 9 26 . 5 2 25.42 25.39 27. 8 4 27.88 28. 4 0 28.8 4 28.44 28. 3 5 28.7 7 28.37 28.00 27. 9 5 28.09 28. 4 9 28.0 0 28. 2 2 27.6 2 27.82 27.45 27.2 5 27.54 27. 9 4 26.75 25.86 26.33 25.8 7 25.97 26.0 4 24.96 25.0624.40 25.39 25.94 25.87 25 . 5 6 25.05 24.15 26.53 26.45 26.15 26.21 17.40 18.7 9 18.79 18 . 7 9 18 . 7 9 18 . 7 9 18 . 7 9 18.79 18. 7 9 18.88 20. 8 8 20 . 8 8 20.88 20.8 8 20.88 21.0 0 20 . 0 1 20 . 0 1 21.00 20.88 20.88 20.88 18.21 17.75 17.59 17.59 15 . 4 8 16.00 15.69 18.59 18.99 17.39 16.53 17.16 16.88 22.8 1 22.8 0 17.25 17.20 17.2 0 17.20 16.60 16.60 17.57 17.28 16.30 22.2 9 23.82 23. 4 6 (2 2 . 0 4 ) 23.83 23 . 4 7 26 . 6 2 26 . 7 7 25.54 25 . 1 6 25.11 A FG=25.84 TF=26.51 A FG=26.35 TF=27.02 A FG=26.44 TF=27.1124.07 24.0 0 24.00 24.0 0 24.00 24.0 0 24.00 23.90 27.7 4 26.97 27.18 26.90 24.1 5 23.42 23.4 1 15 . 4 0 16.36 16. 6 9 15 . 8 5 15. 4 2 16 . 4 0 16 . 2 0 (23 . 2 4 ) 23.0 8 (2 2 . 8 8 ) (2 3 . 4 7 ) 23.6 7 (25.2 7 ) (2 3 . 0 8 ) (22 . 8 1 ) 24.88 18 . 7 9 18 . 8 8 18. 7 9 27.73 27.73 2' SIDEWALK CHASE 1.5' CONCRETE PAN 24. 8 7 24.61 25. 5 3 Sheet FO X G R O V E S U B D I V I S I O N S E C O N D F I L I N G E N G I N E E R N G I E H T R O N R N FO R T C O L L I N S : 3 0 1 N o r t h H o w e s S t r e e t , S u i t e 1 0 0 , 8 0 5 2 1 GR E E L E Y : 8 2 0 8 t h S t r e e t , 8 0 6 3 1 97 0 . 2 2 1 . 4 1 5 8 no r t h e r n e n g i n e e r i n g . c o m of 30 02/10/2020 C3.00 GR A D I N G P L A N 14 NORTH ( IN FEET ) 0 1 INCH = 50 FEET 50 50 100 150 CALL UTILITY NOTIFICATION CENTER OF COLORADO Know what's below. before you dig.Call R LEGEND: 1.EXISTING UNDERGROUND AND OVERHEAD PUBLIC AND PRIVATE UTILITIES AS SHOWN ARE INDICATED ACCORDING TO THE BEST INFORMATION AVAILABLE TO THE ENGINEER. THE ENGINEER DOES NOT GUARANTEE THE ACCURACY OF SUCH INFORMATION. EXISTING UTILITY MAINS AND SERVICES MAY NOT BE STRAIGHT LINES OR AS INDICATED ON THESE DRAWINGS. THE CONTRACTOR SHALL BE RESPONSIBLE TO CALL ALL UTILITY COMPANIES (PUBLIC AND PRIVATE) PRIOR TO ANY CONSTRUCTION TO VERIFY EXACT UTILITY LOCATIONS. 2.REFER TO THE PLAT FOR LOT AREAS, TRACT SIZES, EASEMENTS, LOT DIMENSIONS, UTILITY EASEMENTS, OTHER EASEMENTS, AND OTHER SURVEY INFORMATION. 3.ALL PROJECT DATA IS ON THE VERTICAL DATUM; NAVD 88 (UNADJUSTED). SEE COVER SHEET FOR BENCHMARK REFERENCES. 4.THE TOP OF FOUNDATION ELEVATIONS SHOWN ARE THE MINIMUM ELEVATIONS REQUIRED FOR PROTECTION FROM THE 100-YR STORM. 5.ABBREVIATIONS: ACC.= ACCESS EASEMENT E.A.E= EMERGENCY ACCESS EASEMENT U.E.= UTILITY EASEMENT D.G.E.= DRAINAGE & GRADING EASEMENT 6.NO STORAGE OF MATERIALS OR EQUIPMENT SHALL BE ALLOWED IN THE FLOODWAY, WHETHER TEMPORARY (DURING CONSTRUCTION) OR PERMANENT. LANDSCAPING SHALL ALSO MEET THE REQUIREMENTS FOR NO RISE IN THE FLOODWAY. 7.A FLOODPLAIN USE PERMIT AND NO RISE CERTIFICATION IS REQUIRED PRIOR TO PERFORMING ANY WORK WITHIN THE FLOODWAY (I.E., CURB CUT REMOVAL, LANDSCAPING). 8.A FLOODPLAIN USE PERMIT IS REQUIRED PRIOR TO PERFORMING ANY WORK WITHIN THE FEMA 100-YEAR FLOODPLAIN. 9.PLEASE SEE SECTION 3.4.1 OF THE LAND USE CODE FOR ALLOWABLE USES WITHIN THE NATURAL HABITAT BUFFER ZONE. 10.THE NATURAL HABITAT BUFFER ZONE IS MEANT TO BE MAINTAINED IN A NATIVE LANDSCAPE. NOTES: EXISTING DECID. TREE EXISTING CONIF. TREE EXISTING LIGHT POLE EXISTING STUMP STEXISTING STORM SEWER LINE EXISTING CURB/GUTTER FLOWLINE 4:1BANK SLOPE PROPOSED ASPHALT CROSS SLOPE CONCENTRATED FLOW DIRECTION PROPOSED SWALE FLOWLINE PROPOSED STORM DRAIN WITH INLET PROPOSED CONTOUR EXISTING CONTOUR 79.45PROPOSED FINISH GROUND ELEVATION (79.45) EXISTING GROUND ELEVATION PROPOSED INFLOW CURB/GUTTER FLOWLINE 2.0% 4950 SS X X D MH SMH S S S S S S SSS SS SS VAULT ELEC W G ELEC T T ELECBRKR ELECBRKR MH MH MH MH MH MH MH KEYMAP I- 2 5 FOX GROVE DR VI X E N D R C3.00 RECOR D D R A W I N G SIDEWALK AND PROPERTY LINE ELEVATIONS FOR OUTLOT C ARE EXISTING CONDITIONS AND ARE BASED ON PLOT PLANS AND SURVEY BY NORTHERN ENGINEERING. 1 FLOWLINE ELEVATIONS SHOWN ARE BASED ON TOPO SURVEY BY NORTHERN ENGINEERING. Sheet FO X G R O V E S U B D I V I S I O N S E C O N D F I L I N G E N G I N E E R N G I E H T R O N R N FO R T C O L L I N S : 3 0 1 N o r t h H o w e s S t r e e t , S u i t e 1 0 0 , 8 0 5 2 1 GR E E L E Y : 8 2 0 8 t h S t r e e t , 8 0 6 3 1 97 0 . 2 2 1 . 4 1 5 8 no r t h e r n e n g i n e e r i n g . c o m of 30 02/10/2020 C6.06 DR A I N A G E D E T A I L S 28 CALL 2 BUSINESS DAYS IN ADVANCE BEFORE YOU DIG, GRADE, OR EXCAVATE FOR THE MARKING OF UNDERGROUND MEMBER UTILITIES. CALL UTILITY NOTIFICATION CENTER OF COLORADO Know what'sbelow. before you dig.Call R AA B B A A DATE DRAWN:3/3/05 D43.dwg T. COXDRAWN BY: CAD FILE NAME: DETAIL 704 SINGLE COMBINATION INLET DATE DRAWN:3/3/05 D44.dwg T. COXDRAWN BY: CAD FILE NAME: AA B B A A DETAIL 703 DOUBLE COMBINATION INLET700NYLOPLAST 24" DRAIN BASIN 701 NYLOPLAST 24" DOME GRATE 702 ---- INLET SCHEDULE INLET SCHEDULE Inlet ID Inlet Size Inlet Type Inlet 1-2 Double Combination Inlet 1-3 Double Combination Inlet 1-5.1 Single Combination Inlet 1-6 Single Combination Inlet 2-1N Single Combination Inlet 2-1S Single Combination Inlet 3-2 2' Dia.Nyloplast w/Dome Cover Inlet 3-4 Single Combination (5) ADAPTER ANGLES VARIABLE 0° - 360° ACCORDING TO PLANS 18" MIN WIDTH GUIDELINE 8" MIN THICKNESS GUIDELINE (3) VARIABLE SUMP DEPTH ACCORDING TO PLANS (6" MIN. BASED ON MANUFACTURING REQ.) 4" MIN MINIMUM PIPE BURIAL DEPTH PER PIPE MANUFACTURER RECOMMENDATION (MIN. MANUFACTURING REQ. SAME AS MIN. SUMP) (3) VARIABLE INVERT HEIGHTS AVAILABLE (ACCORDING TO PLANS/TAKE OFF) (4) VARIOUS TYPES OF INLET & OUTLET ADAPTERS AVAILABLE: 4" - 24" FOR CORRUGATED HDPE (ADS N-12/HANCOR DUAL WALL, ADS/HANCOR SINGLE WALL), N-12 HP, PVC SEWER (EX: SDR 35), PVC DWV (EX: SCH 40), PVC C900/C905, CORRUGATED & RIBBED PVC WATERTIGHT JOINT (CORRUGATED HDPE SHOWN) (1, 2) INTEGRATED DUCTILE IRON FRAME & GRATE TO MATCH BASIN O.D. NYLOPLAST 24" DRAIN BASIN: 2824AG _ _X REV E7001-110-192DWG NO.1 OF 1SHEET1:40SCALEDWG SIZE A 3130 VERONA AVE BUFORD, GA 30518 PHN (770) 932-2443 FAX (770) 932-2490 www.nyloplast-us.com 24 IN DRAIN BASIN QUICK SPEC INSTALLATION DETAIL TITLE PROJECT NO./NAME MATERIAL DATE REVISED BY 04-03-06DATE EBCDRAWN BY 03-14-16 NMH THIS PRINT DISCLOSES SUBJECT MATTER IN WHICH NYLOPLAST HAS PROPRIETARY RIGHTS. THE RECEIPT OR POSSESSION OF THIS PRINT DOES NOT CONFER, TRANSFER, OR LICENSE THE USE OF THE DESIGN OR TECHNICAL INFORMATION SHOWN HEREIN REPRODUCTION OF THIS PRINT OR ANY INFORMATION CONTAINED HEREIN, OR MANUFACTURE OF ANY ARTICLE HEREFROM, FOR THE DISCLOSURE TO OTHERS IS FORBIDDEN, EXCEPT BY SPECIFIC WRITTEN PERMISSION FROM NYLOPLAST. 1 - GRATES/SOLID COVER SHALL BE DUCTILE IRON PER ASTM A536 GRADE 70-50-05. 2 - FRAMES SHALL BE DUCTILE IRON PER ASTM A536 GRADE 70-50-05. 3 - DRAIN BASIN TO BE CUSTOM MANUFACTURED ACCORDING TO PLAN DETAILS. RISERS ARE NEEDED FOR BASINS OVER 84" DUE TO SHIPPING RESTRICTIONS. SEE DRAWING NO. 7001-110-065. 4 - DRAINAGE CONNECTION STUB JOINT TIGHTNESS SHALL CONFORM TO ASTM D3212 FOR CORRUGATED HDPE (ADS N-12/HANCOR DUAL WALL), N-12 HP & PVC SEWER. 5 - ADAPTERS CAN BE MOUNTED ON ANY ANGLE 0° TO 360°. TO DETERMINE MINIMUM ANGLE BETWEEN ADAPTERS SEE DRAWING NO. 7001-110-012. THE BACKFILL MATERIAL SHALL BE CRUSHED STONE OR OTHER GRANULAR MATERIAL MEETING THE REQUIREMENTS OF CLASS I, CLASS II, OR CLASS III MATERIAL AS DEFINED IN ASTM D2321. BEDDING & BACKFILL FOR SURFACE DRAINAGE INLETS SHALL BE PLACED & COMPACTED UNIFORMLY IN ACCORDANCE WITH ASTM D2321. TRAFFIC LOADS: CONCRETE SLAB DIMENSIONS ARE FOR GUIDELINE PURPOSES ONLY. ACTUAL CONCRETE SLAB MUST BE DESIGNED TAKING INTO CONSIDERATION LOCAL SOIL CONDITIONS, TRAFFIC LOADING, & OTHER APPLICABLE DESIGN FACTORS. SEE DRAWING NO. 7001-110-111 FOR NON TRAFFIC INSTALLATION. ® ©2013 NYLOPLAST REV D7001-110-219DWG NO.1 OF 1SHEET1:6SCALEDWG SIZE A 3130 VERONA AVE BUFORD, GA 30518 PHN (770) 932-2443 FAX (770) 932-2490 www.nyloplast-us.com 24 IN DOME GRATE TITLE PROJECT NO./NAME MATERIAL DATE REVISED BY DATE DRAWN BYTHIS PRINT DISCLOSES SUBJECT MATTER IN WHICH NYLOPLAST HAS PROPRIETARY RIGHTS. THE RECEIPT OR POSSESSION OF THIS PRINT DOES NOT CONFER, TRANSFER, OR LICENSE THE USE OF THE DESIGN OR TECHNICAL INFORMATION SHOWN HEREIN REPRODUCTION OF THIS PRINT OR ANY INFORMATION CONTAINED HEREIN, OR MANUFACTURE OF ANY ARTICLE HEREFROM, FOR THE DISCLOSURE TO OTHERS IS FORBIDDEN, EXCEPT BY SPECIFIC WRITTEN PERMISSION FROM NYLOPLAST. 3-24-11 EBC ® ©2011 NYLOPLAST DUCTILE IRON3-8-06 EBC APPROX. DRAIN AREA = 270.64 SQ IN APPROX. WEIGHT = 53.00 LBS DIMENSIONS ARE FOR REFERENCE ONLY ACTUAL DIMENSIONS MAY VARY DIMENSIONS ARE IN INCHES QUALITY: MATERIALS SHALL CONFORM TO ASTM A536 GRADE 70-50-05 PAINT: CASTINGS ARE FURNISHED WITH A BLACK PAINT LOCKING DEVICE AVAILABLE UPON REQUEST 2499CGD SECTION A-A D D N D YLOPLAST O N O T P O L L U T E U C T I L E I R O N RA I N S T O W A T E R WAYS A A Ø25.75 8.00 RECOR D D R A W I N G A A SECTION A-A PLAN VIEW (FOR STORM SEWERS 1 AND 3) DIRECTION OF FLOW PROPOSED NATIVE MATERIAL SUBBASE FLOWLINE FINISH GROUND 9.0" 6.0" 9.0" INVERT OF PIPE (SEE STORM SEWER PLAN AND PROFILES) STORM SEWER PIPE SLOPE GRADING TO MATCH INTO FLARED END SECTION AND TOP OF FOREBAY. MAXIMUM 3:1 SLOPE (4:1 TYPICAL) WITHIN IMMEDIATE VICINITY OF FLARED END SECTION. NOTE: 1.SEE STORM SEWER PLAN AND PROFILES FOR STORM SEWER INVERT ELEVATIONS, PIPE SIZES, PIPE SLOPES, AND FLARED END SECTION SIZES. STORM SEWER PIPE FLARED END SECTION 22.39' 4.62' 2' 30.34' 7.22' 5.96' 0.5'0.5' 15.09' 2" SLOT (TYP.) (FROM FLOWLINE TO TOP) 2" SLOT (TYP.) (FROM FLOWLINE TO TOP) 2" SLOT (TYP.) (FROM FLOWLINE TO TOP) 1% SEE SHEET C3.00 FOR ADDITIONAL GRADING INFORMATION Sheet FO X G R O V E S U B D I V I S I O N S E C O N D F I L I N G E N G I N E E R N G I E H T R O N R N FO R T C O L L I N S : 3 0 1 N o r t h H o w e s S t r e e t , S u i t e 1 0 0 , 8 0 5 2 1 GR E E L E Y : 8 2 0 8 t h S t r e e t , 8 0 6 3 1 97 0 . 2 2 1 . 4 1 5 8 no r t h e r n e n g i n e e r i n g . c o m of 30 02/10/2020 C6.07 DR A I N A G E D E T A I L S 29 CALL 2 BUSINESS DAYS IN ADVANCE BEFORE YOU DIG, GRADE, OR EXCAVATE FOR THE MARKING OF UNDERGROUND MEMBER UTILITIES. CALL UTILITY NOTIFICATION CENTER OF COLORADO Know what'sbelow. before you dig.Call R 1.CONTRACTOR SHALL INSTALL BIORETENTION BASINS ACCORDING TO THE APPROVED PLANS AND/OR CONSTRUCTION SPECIFICATIONS. 2.PRE-CONSTRUCTION 2.1.CONTRACTOR SHALL AVOID COMPACTION OF THE BIORETENTION BASIN AREA TO PRESERVE EXISTING INFILTRATION RATES. 2.2.CONTRACTOR SHALL CALL FOR CITY INSPECTIONS AT THE INTERVALS STIPULATED IN THE "DURING CONSTRUCTION INSPECTION CHECKLISTS". 3.DURING CONSTRUCTION: 3.1.CONTRACTOR SHALL PROVIDE CONSTRUCTION OBSERVATION DURING CONSTRUCTION OF THE BIORETENTION BASIN TO ENSURE COMPLIANCE WITH THE APPROVED PLANS AND DESIGN SPECIFICATIONS. 3.2.LOOSE MATERIALS SHALL NOT BE STORED ON THE BIORETENTION AREA. 3.3.THE CONTRACTOR SHALL, AT ALL TIMES DURING AND AFTER SYSTEM INSTALLATION, PREVENT SEDIMENT, DEBRIS AND DIRT FROM ANY SOURCE FROM ENTERING THE BIORETENTION SYSTEM. 4.GEOTEXTILE LINERS: 4.1.WHERE USED, GEOTEXTILE LINERS (PERMEABLE OR IMPERMEABLE AS PER PLAN) SHALL BE INSTALLED ALONG PERIMETER OF CROSS-SECTION OF THE BIORETENTION CELL. 4.2.WHERE USED, GEOTEXTILE LINERS SHALL BE PLACED IN ACCORDANCE WITH MANUFACTURER'S STANDARDS AND RECOMMENDATIONS. ALL SEAMS AND OPENINGS IN THE LINER SHALL BE SEALED ACCORDING TO MANUFACTURER'S RECOMMENDATIONS AND SPECIFICATIONS. 4.3.WHERE USED, IMPERMEABLE GEOMEMBRANE SHEET / LINER SHALL BE 40 MIL THICK, HIGH-DENSITY POLYETHYLENE DESIGNED SPECIFICALLY FOR FLEXIBLE GEOMEMBRANE APPLICATIONS. ADJACENT STRIPS OF IMPERMEABLE LINER SHALL OVERLAP A MINIMUM OF 18", OR PER MANUFACTURER'S SPECIFICATION. 4.4.WHERE USED, CONTRACTOR TO PLACE LINER IN A WAY THAT ENSURES ENOUGH SLACK IN THE LINER TO ALLOW FOR BACKFILL AND SETTLING WITHOUT TEARING THE LINER. 5.AGGREGATES AND BSM: 5.1.ALL AGGREGATES SHALL BE ANGULAR, CRUSHED, WASHED ROCK, CLEAN OF DEBRIS AND WITH NO MORE THAN 1% FINES. 5.2.RESERVOIR AGGREGATE SHALL BE GRADATION ASTM #57 OR #67. 5.3.DIAPHRAGM AGGREGATE SHALL BE "PEA GRAVEL", WITH GRADATION ASTM #8, #89 OR #9. 5.4.THE BIORETENTION SOIL SHALL MEET THE CITY BIORETENTION SAND MEDIA ("BSM") SPECIFICATION FOUND AT:https://www.fcgov.com/utilities/business/builders-and-developers/development-forms-guidelines-regulations/ NOTES: 8" MIN 4" MIN DIAMETER PERFORATED PVC UNDERDRAIN 2" MIN 30" MIN 12" MAX1 GEOTEXTILE LINER (AS PER PLAN) MAXIMUM ALLOWABLE PONDING DEPTH IS 12" FROM THE TOP OF THE MULCH 4 MAX NON-FLOATABLE MULCH (AS PER PLAN) 3" PONDING DEPTH MUST NOT EXCEED FLOWLINE ELEVATION OF ADJACENT GUTTER FOREBAY IS REQUIRED TO BE PLACED AT ALL INFLOW LOCATIONS; WITH A MINIMUM 3" DROP FROM GUTTER FLOWLINE TO FOREBAY 4" MIN DEPTH OF DIAPHRAGM AGGREGATE 8" MIN DEPTH OF RESERVOIR AGGREGATE 18" MIN DEPTH OF BIORETENTION SAND MEDIA 8" MIN DEPTH THICKENED CURB ADJACENT TO VEHICULAR PAVEMENTS OVERFLOW RISER OPTION (AS PER PLAN) 8" MIN DEPTH THICKENED CURB ADJACENT TO VEHICULAR PAVEMENTS STANDARD CROSS-SECTION 1 2 WALLED CROSS-SECTION PONDING DEPTH MUST NOT EXCEED FLOWLINE ELEVATION OF ADJACENT GUTTER 18" MIN 4" 12" MAX 30" MIN 36" MIN BASIN WIDTH COVER PLATE 8" SIDEWALK CHASE 18" MIN OVERFLOW RISER OPTION (AS PER PLAN) REINFORCED CONCRETE WALLS (AS PER PLAN) 4" MIN DEPTH OF DIAPHRAGM AGGREGATE 8" MIN DEPTH OF RESERVOIR AGGREGATE 18" MIN DEPTH OF BIORETENTION SAND MEDIA MAXIMUM ALLOWABLE PONDING DEPTH IS 12" FROM THE SURFACE OF THE MULCH 4" MIN DIAMETER PERFORATED PVC UNDERDRAIN 6.UNDERDRAIN: 6.1.UNDERDRAIN PIPE TO BE PERFORATED OR SLOTTED. PERFORATIONS OR SLOTS TO BE SMALLER THAN SURROUNDING AGGREGATE TO ENSURE AGGREGATE DOES NOT FALL INTO OR CLOG THE OPENINGS. 6.2.DO NOT WRAP UNDERDRAIN WITH GEOTEXTILE OR SOCK. 6.3.UNDERDRAIN PIPE MUST OUTFALL BY GRAVITY AND MUST TIE INTO A STORMWATER PIPE, INLET OR SYSTEM AND THE LOCATION MUST BE APPROVED BY THE CITY. THE UNDERDRAIN TIE-IN SHALL MEET ALL REQUIRED PIPE SIZE, TYPES, AND COVER REQUIREMENTS THAT MAY APPLY TO PIPING THAT EXTENDS BEYOND THE LIMITS OF THE BIORETENTION CELL AND ENCROACHES INTO PUBLIC RIGHT-OF-WAY OR OTHER PROPERTY. 7.OVERFLOW INLET: 7.1.AN OVERFLOW INLET OR RISER PIPE SHALL BE PROVIDED. 7.2.ALL OVERFLOW RISER PIPE SHALL BE CAPPED WITH A DOME-SHAPED GRATE. 7.3.AN EMERGENCY OVERFLOW ROUTE SHALL BE PROVIDED AND THE LOCATION SHALL BE IDENTIFIED ON THE PLANS. 8.CLEANOUTS: 8.1.PROVIDE CLEANOUTS (AS PER PLAN) TO ALLOW INSPECTION (BY CAMERA) OF THE UNDERDRAIN SYSTEM DURING AND AFTER CONSTRUCTION. 8.2.CLEANOUTS SHALL BE PROVIDED AT EACH BEND GREATER THAN OR EQUAL TO 90° AND EVERY 100' ALONG A STRAIGHT RUN. CLEANOUT SHALL BE INSTALLED PER THE APPROVED PLANS. 8.3.CLEANOUTS SHALL BE A SOLID WALL PVC STRUCTURE FOR ALL VERTICAL SECTIONS WITH FITTINGS TO CONNECT TO DISTRIBUTION AND UNDERDRAIN PIPING MATERIALS, AS REQUIRED. 9.FOREBAY: 9.1.THE FOREBAY SHALL BE EASILY ACCESSIBLE WITH A HARD SURFACED BOTTOM FOR MAINTENANCE PURPOSES. 10.LANDSCAPE MATERIALS 10.1.CONTRACTOR SHALL NOT PLACE WEED BARRIER ANYWHERE WITHIN THE BIORETENTION BASIN. IF MULCH IS PLACED IN THE BIORETENTION BASIN, IT MUST BE NON-FLOATABLE. 10.2.IF MULCH OR COBBLES ARE PLACED IN THE BIORETENTION BASIN, THE MAXIMUM ALLOWABLE WATER DEPTH OF 12" AND REQUIRED BASIN VOLUME MUST BE MEASURED FROM THE TOP SURFACE OF THE MULCH OR COBBLE. 10.3.ROLLED TURF OR SOD IS NOT AN ALLOWABLE LANDSCAPE MATERIAL FOR BIORETENTION BASINS. LOW WATER CONSUMPTION LANDSCAPE PLANTINGS ARE PREFERRED FOR BIORETENTION BASINS. 10.4.LANDSCAPE PLANTINGS SHALL NOT BE PLACED TO IMPEDE DRAINAGE INTO OR OUT OF THE BIORETENTION BASIN. 10.5.TEMPORARY IRRIGATION MAY BE INSTALLED TO ESTABLISH LANDSCAPING OR SEED IN THE BIORETENTION BASIN. 2" MIN 8" MIN 4" 8" NATIVE SOIL ZONE FLAT DETAILS CONSTRUCTION DETAILSTORMWATER BIORETENTION DECEMBER 2018 HEM D-53 DIMENSIONS FOR SLOTTED PVC PIPE SCREEN SLOT TABLE GUIDELINES A B C D E F PIPE SIZE ROWS OF SLOTS SLOT LENGTH MAXIMUM SLOT WIDTH APPROX. SLOT/ROW PER FOOT APPROX. SLOT SPACING OPEN AREA PER FOOT 4"3 (MIN.) - 6 (MAX.)1.0625"0.032"12 0.413 1.90 SQ. IN. 801 FOREBAY FOR STORM 1 AND 3800 DIMENSIONS FOR SLOTTED PVC PIPE802 803 ---- EMERGENCY SPILLWAY DETAIL MIN 8" THICK WALL 2-#4 BAR 2-#4 BAR 3" CLEAR EACH WAY #3 TIES 18" MIN O/C #4 BAR 18" O/C TOP OF WEIR (A) TOP OF WALL (B) 804 ---- OUTLET STRUCTURE ORIFICE MODIFICATION EXISTING ORIFICE, DIA=6.8" EXISTING 18" OUTLET PIPE 7.6" 7.6" PROPOSED ORIFICE (7.6" X 7.6" SQUARE) TO EQUAL 54.72 IN2 IN AREA, TO BE CUT OUT FROM EXISTING ORIFICE PLATE. EXISTING ORIFICE PLATE EXISTING OUTLET STRUCTURE 29" 23.5" RECOR D D R A W I N G February 10, 2020 FINAL DRAINAGE AND EROSION CONTROL REPORT FOR FOX GROVE SECOND FILING Fort Collins, Colorado Prepared for: Imago Enterprises 140 Palmer Dr. Fort Collins, CO 80525 Prepared by: 200 South College Avenue, Suite 10 Fort Collins, Colorado 80524 Phone: 970.221.4158 Fax: 970.221.4159 www.northernengineering.com Project Number: 335-017  This Drainage Report is consciously provided as a PDF. Please consider the environment before printing this document in its entirety. When a hard copy is absolutely necessary, we recommend double-sided printing. SS SS SS SSSS SS UD W W W W W W W W W W W S S SS S S S SS S S S S S S EE EE EE EE EE EE SB SB SB SB E SB SB SB W W W W RO L L I N S D E N D R I V E RAIN GARDEN DETENTION POND FOX GROVE DR FOX GROVE FILING 2 SHEET NO: D: \ P R O J E C T S \ 3 3 5 - 0 1 7 \ D R A I N A G E \ D R N G C E R T \ E X H I B I T S \ 3 3 5 - 0 1 7 S T O R M V O L U M E C E R T I F I C A T I O N . D W G ISSUED:DRAWING REFERENCE: DETENTION POND AND RAIN GARDEN STAGE STORAGE COMPLIANCE C. Pape 1in=70ft 06/14/2022 1 DRAWN BY: SCALE: ISSUED: ( IN FEET ) 0 1 INCH = 70 FEET 70 70 FORT COLLINS: 301 North Howes Street, Suite 100, 80521 GREELEY: 820 8th Street, 80631 E N G I N E E R N GI EHTRON R N 970.221.4158 northernengineering.com DETENTION POND 1 PER DESIGN: 100-YR VOLUME: 3.84 AC-FT 100-YR WSEL: 4921.50 WQCV VOLUME: 6926 CF WQCV WSEL: 4917.00 AS-BUILT: 100-YR VOLUME: 3.87 AC-FT 100-YR WSEL: 4921.50 WQCV VOLUME: 9096.22 CF WQCV WSEL: 4917.00 CONCLUSION: 100-YR VOLUME IS IN COMPLIANCE WITH THE DESIGN. WQCV IS IN COMPLIANCE WITH THE DESIGN RAIN GARDEN 1 PER DESIGN: RAIN GARDEN VOL: 3,282 CF MIN RAIN GARDEN AREA: 3,280 SF OVERFLOW WEIR ELEV: 4,920.00 AS-BUILT: RAIN GARDEN VOL: 5,302 CF RAIN GARDEN AREA: 3,492 SF OVERFLOW WEIR ELEV: 4,920.00 CONCLUSION: RAIN GARDEN IS IN COMPLIANCE WITH THE DESIGN DETENTION POND ELEV AREA (sq. ft.) CONIC INC. VOL. (cu. ft.) CONIC TOTAL VOL. (cu. ft.) 4915.40 15.45 N/A 0.00 4915.50 55.37 3.34 3.34 4915.60 243.64 13.84 17.17 4915.70 587.12 40.30 57.47 4915.80 1057.05 81.07 138.54 4915.90 1721.99 137.61 276.15 4916.00 2485.55 209.21 485.36 4916.10 3448.89 295.41 780.77 4916.20 4598.07 400.97 1181.74 4916.30 5808.50 519.15 1700.89 4916.40 6948.60 637.00 2337.90 4916.50 8169.62 755.09 3092.99 4916.60 9537.67 884.48 3977.47 4916.70 11141.04 1032.90 5010.37 4916.80 12804.20 1196.30 6206.67 4916.90 14441.97 1361.49 7568.15 4917.00 16135.03 1528.07 9096.22 4917.10 17655.74 1688.97 10785.19 4917.20 19061.24 1835.40 12620.59 4917.30 20363.09 1970.86 14591.45 4917.40 21531.56 2094.46 16685.91 4917.50 22689.81 2210.82 18896.72 4917.60 23841.42 2326.32 21223.05 4917.70 24932.28 2438.48 23661.53 4917.80 26324.36 929.79 24591.31 4917.90 27215.66 2676.88 27268.19 4918.00 27969.56 2759.18 30027.37 4918.10 28619.19 2829.38 32856.74 4918.20 29220.70 2891.94 35748.68 4918.30 29783.15 2950.15 38698.83 DETENTION POND (CONT.) ELEV AREA (sq. ft.) CONIC INC. VOL. (cu. ft.) CONIC TOTAL VOL. (cu. ft.) 4918.40 30303.26 3004.28 41703.11 4918.50 30794.45 3054.85 44757.97 4918.60 31271.44 3103.26 47861.23 4918.70 31735.15 3150.30 51011.53 4918.80 32189.33 3196.20 54207.73 4918.90 32635.93 3241.24 57448.97 4919.00 33080.28 3285.79 60734.75 4919.10 33515.58 3329.77 64064.52 4919.20 33943.42 3372.93 67437.45 4919.30 34370.74 3415.69 70853.13 4919.40 34798.11 3458.42 74311.56 4919.50 35226.43 3501.21 77812.76 4919.60 35692.76 3545.93 81358.69 4919.70 36318.17 3600.50 84959.20 4919.80 36878.51 3659.80 88618.99 4919.90 41925.48 3937.50 92556.50 4920.00 42580.33 4225.25 96781.75 4920.10 43182.65 4288.11 101069.86 4920.20 43778.48 4348.02 105417.88 4920.30 44374.84 4407.63 109825.51 4920.40 44971.74 4467.30 114292.81 4920.50 45569.17 4527.01 118819.82 4920.60 46167.14 4586.78 123406.60 4920.70 46765.98 4646.62 128053.23 4920.80 47366.25 4706.58 132759.81 4920.90 47967.95 4766.68 137526.49 4921.00 48570.09 4826.87 142353.36 4921.10 49172.80 4887.11 147240.47 4921.20 49777.75 4947.50 152187.97 4921.30 50384.95 5008.10 157196.07 RAIN GARDEN ELEV AREA (sq. ft.) CONIC INC. VOL. (cu. ft.) CONIC TOTAL VOL. (cu. ft.) 4,918.60 3492.35 N/A 0 4,918.80 3831.78 732.15 732.15 4,919.00 4,061.29 789.19 1521.35 4,919.20 4,296.97 835.71 2357.06 4,919.40 4,812.77 910.49 3267.55 4,919.60 5,089.33 990.08 4257.63 4,919.80 5,359.25 1044.74 5302.37 11/19 Page 8 XIV.Certification of Other Permanent BMPs A.The construction of other permanent BMPs not specifically addressed in this certification is in accordance with the approved plan. This may include grade control structures, rundowns, bridges, stream access/improvements, etc. Please specify other permanent BMPs included on this site: XV. Certification and Erosion Control Measures - FCSCM Ch. 3 A. All temporary erosion control measures shall be removed upon stabilization. If at the time of preparing this certification there are any erosion control measures still remaining on the site, please note them in the narrative and verify that they need to remain at this time. If in doubt as to the need for any control measure, please consult with the Erosion Control Inspector at erosion@fcgov.com. XVI.Statement of Compliance - FCSCM Ch. 3 A. This certification is signed and stamped. By signing this form, the engineer(s) attests that he/she has visited and observed the site, and to the best of his/her knowledge, the as-built conditions of the drainage facilities are as described in the above form and in the enclosed as-built plans. B.Failure to properly disclose all known information could result in the rejection of this certification and prevent the release of any and all Stormwater Utility permit holds on Building Permits and/or Certificates of Occupancy within this development. XVII. Signature and Stamp by a Colorado-Registered Professional Engineer Engineer’s contact information: Name: Email: Phone: Company: Address: PE Stamp 07/27/23 Stormwater Facility Name: Facility Location & Jurisdiction: User (Input) Watershed Characteristics User Defined User Defined User Defined User Defined Watershed Slope =0.020 ft/ft Stage [ft]Area [ft^2]Stage [ft]Discharge [cfs] Watershed Length-to-Width Ratio =1.00 L:W 0.00 15 0.00 0.00 Watershed Area =12.60 acres 0.20 244 0.20 0.90 Watershed Imperviousness =37.2%percent 0.40 1,057 0.40 1.27 Percentage Hydrologic Soil Group A =1.1%percent 0.60 2,486 0.60 1.55 Percentage Hydrologic Soil Group B =30.4%percent 0.80 4,598 0.80 1.79 Percentage Hydrologic Soil Groups C/D =68.5%percent 1.00 6,949 1.00 2.01 1.20 9,538 1.20 2.20 1.40 12,804 1.40 2.37 1.60 16,134 1.60 2.54 1.80 19,057 1.80 2.69 User Input: Detention Basin Characteristics 2.00 21,524 2.00 2.84 WQCV Design Drain Time =40.00 hours 2.20 23,829 2.20 2.98 2.40 26,308 2.40 3.11 2.60 27,934 2.60 3.24 2.80 29,167 2.80 3.36 3.00 30,233 3.00 3.48 3.20 31,187 3.20 3.59 3.40 32,096 3.40 3.70 3.60 32,996 3.60 3.81 3.80 33,886 3.80 3.91 4.00 34,790 4.00 4.01 4.20 35,768 4.20 4.11 4.40 36,757 4.40 4.21 4.60 43,292 4.60 4.30 4.80 44,451 4.80 4.40 5.00 45,618 5.00 4.49 5.20 46,795 5.20 4.58 5.40 47,981 5.40 4.66 5.60 49,175 5.60 4.75 5.80 50,379 5.80 4.83 After completing and printing this worksheet to a pdf, go to:6.00 51,599 6.00 4.91 https://maperture.digitaldataservices.com/gvh/?viewer=cswdif,6.20 52,837 6.20 5.00 create a new stormwater facility, and attach the pdf of this worksheet to that record. Routed Hydrograph Results Design Storm Return Period =WQCV 2 Year 5 Year 10 Year 25 Year 50 Year 100 Year Two-Hour Rainfall Depth =0.53 0.98 1.36 1.71 2.31 2.91 3.67 in Calculated Runoff Volume =0.179 0.342 0.660 0.968 1.580 2.133 2.910 acre-ft OPTIONAL Override Runoff Volume =acre-ft Inflow Hydrograph Volume =0.179 0.341 0.660 0.967 1.579 2.133 2.910 acre-ft Time to Drain 97% of Inflow Volume =1 2 3 4 6 8 10 hours Time to Drain 99% of Inflow Volume =1 2 3 4 6 8 10 hours Maximum Ponding Depth =1.05 1.50 2.09 2.55 3.33 3.99 4.79 ft Maximum Ponded Area =0.171 0.330 0.517 0.630 0.730 0.796 1.018 acres Maximum Volume Stored =0.061 0.173 0.428 0.691 1.230 1.727 2.435 acre-ft Stormwater Detention and Infiltration Design Data Sheet Fox Grove Filing 2 - Detention Pond 1 - As-built Fox Grove Dr and Rollins Den Drive - Fort Collins, CO Workbook Protected Worksheet Protected Detention and Infiltration Design CRS Spdsht.xlsm, Design Data 7/27/2023, 1:29 PM Doing_Clear_Formatting =Yes CountA=1 0 1 2 3 #N/A #N/A 0 1 2 3 #N/A #N/A Check Data Set 1 Check Data Set 1 Stormwater Detention and Infiltration Design Data Sheet Area Discharge 0 10 20 30 40 50 60 70 80 90 0.1 1 10 FL O W [ c f s ] TIME [hr] 100YR IN 100YR OUT 50YR IN 50YR OUT 25YR IN 25YR OUT 10YR IN 10YR OUT 5YR IN 5YR OUT 2YR IN 2YR OUT WQCV IN WQCV OUT 0 1 2 3 4 5 6 0.1 1 10 100 PO N D I N G D E P T H [ f t ] DRAIN TIME [hr] 100YR 50YR 25YR 10YR 5YR 2YR WQCV Detention and Infiltration Design CRS Spdsht.xlsm, Design Data 7/27/2023, 1:29 PM