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Home My WebLink AboutDrainage Reports - 07/20/2011NORTHERN ENGINEERING ADDRESS: PHONE:970.221.4158 WEBSITE: 200 S. College Ave. Suite 100 www.northernengineering.com Fort Collins, CO 80524 FAX: 970.221.4159 City of Fort Collins Stormwater Utility 700 Wood St. Fort Collins, CO 80521 May 3, 2011 RE: Drainage Summary 415 South Mason Street Project No.: 634-001 To Whom It May Concern: City of Ft. Collins`K/z ro d Plans �1PProved By _ Date_ -7_ I This drainage summary letter has been prepared by Northern Engineering Services, Inc. (Northem) for the above referenced project to document new impervious areas, proposed drainage patterns, and water quality mitigation for the proposed development at 415 South Mason Street in Fort Collins. Impervious Area Calculations The following table has been prepared per information provided by the site planner for the project and is being provided in this letter to document the net change in impervious area with the development. Table 1 — Impervious Areas Condition Impervious Area (square feet Existing Condition 6,724 Proposed Condition 11,564 The proposed project includes a building addition, along with additional concrete pavement and sidewalks resulting in a net increase in impervious area of approximately 4,840 square feet. Drainage Patterns Existing Drainage Patterns From site visits, it appears that the intent of the existing site is to drain the entirety of the site towards South Mason Street. Once at South Mason Street, drainage will head south and be collected by existing inlets and storm sewer within South Mason Street. From survey information, the western half of the existing site collects within a low point in the site prior to reaching South Mason Street. Onsite ponding occurs to a depth of approximately 6-inches prior to overtopping the existing high point and draining east to the street. Proposed Drainage Patterns Due to existing conditions, the existing drainage patterns have been maintained to a large extent to provide positive drainage away from all structures on or adjacent to the site. The western half of the proposed site will drain to a low -point within the site which will be drained via a new 10-inch storm sewer and area inlet. Should the area inlet become clogged during a storm event, approximately 2.5-inches of ponding will occur onsite prior to overtopping and draining east to South Mason Street. Protective grading of the site also provides for approximately 4-inches of clearance from the ponding depth to the lowest adjacent finished floor elevation. Roof drainage from the existing building and proposed addition will also be collected via the new storm sewer. Water Quality Mitigation As noted by City of Fort Collins personnel, the exiting site is within the Udall Basin which provides for regional water quality of this site. Due to existing conditions, the majority of the site is not being provided with additional water quality measures. Note that the Landscape Architect is providing a small amount of permeable pavers on the east side of the existing building and a new landscaped parkway which will provide a small amount of water quality for that portion of the site prior to runoff reaching South Mason Street. Northern understands that any review provided by the City of Fort Collins is to assure general compliance with City requirements and standardized criteria contained in the City of Fort Collins Storm Drainage Design Criteria. If you should have any questions or comments regarding this drainage summary please feel free to contact our offices at your earliest convenience. Sincerely, NORTHERN ENGINEERING SERVICES, INC. i Kevin Brazelton, PE Project Engineer ARCHITECTURE May 3, 2011 Peter Barnes Zoning Administrator City of Fort Collins, GO RE: Staff Project Review Response, 415 S. Mason Street Mr. Barnes, We respectfully submit these responses to the Staff comments Dated April 18, 2011. Please refer to the staff review letter for the corresponding Item numbers and categories. These responses are a collection of response comments from Northern Engineering Services, and Ripley Design Inc., and our office. Please review the attached comments and documents for responses to your project review. Department Current Planning Topic: Building Elevations Number. 11 The attached revised building elevation has been changed to reflect maintaining the historic window pattern wherever possible. Number. 12 The attached revised building elevation has been changed to reflect maintaining the existing Mason Street masonry as original unpainted brick. Number. 13 The attached revised building elevation has been changed to reflect adding 4" of flnished wall surface to the new building addition. The Intent Is to make the addition recognizable as a separate part of the building distinct from the original portion. We have chosen to set out rather than set back the addition, and have proposed a plaster wall surface to distinguish the addition, yet use a material sensitive to the design and time period of the original building. Number. 14 To the best of our knowledge, the site and the proposed project conform to bath Section 3.4.7 of the Land Use Code, and Section 14-72 of the Fort Collins Municipal Code. Number. 15 This submission process Is noted. Topic: General Number. 8 The Information has been added to the attached proposed site plan. Number..1O The Owner has been notified to contact Mr. Zoccall and confirm that the site Is not contaminated. 355 BELLAIRE GT. BROOMFIELD, GO 8 0 0 2 0 303-439-0822 r3design@q.com Topic: Landscape Plans Number. 2 Because of utility conflicts south of the entrance off Mason, and to avoid obscuring the historical features of the building (by direction from city historic preservation planner), the street trees have been limited to the locations shown. Number. 3 Mulch for the annual boxes was Increased to 3' as requested. Number. 5 The flag pole was added to the landscape plans. Topic: Lighting Plan Number. 9 A site lighting plan with Photometric calculations has been attached. Topic: Planning Objectives Number. 4 Bike racks have been updated on the site plan as requested to match the landscape plan. Topic: Site Plan Number..1 The ROW notes have been added to the site along with street setback dlmenslons. Number. 6 The bike racks at the northwest corner of the site are primorlly for employees, but can also be used by customers If necessary. Number. 7 The parking lot variance addresses the changes to the lot In order to provide parking, Including the placement of the landscape setback. This parking is not required, but Is being provided by the building Owner to Improve downtown parking congestion. Department Engineering Development Review Topic: General Number.l A utility plan set has been prepared and submitted per the checklist In Appendlx E4. Number. 2 The Varlonce Request has been submitted to Susan Joy under separate cover. Number. 3 The drawings have been changed to show the reference dimensions and notes conforming to Detail 707. Number. 4- All boulders were removed from the right-of-way. 9 Number. 5 All landscaping In the right-of-way meets site distance requirements (24' height limitation). Number. 6 A landscape note (#16) describing the permeable pavement was added to the landscape plans. Number. 7 The construction will not require any construction easements, temporary or otherwise, and the building construction will not overhang any property lines. Building elevations are attached. Department Light and Power Topic: General Number.l The transformer has been located 24' from the sidewalk and has all the clearances required by the City of Fort Collins. Department PFA Topic: General Number..1 The proposed building will be sprinklered. A new sprinkler line Is shown on the drawing. Number. 2 Fire department connection shall be visible and accessible from the north side of the building, which has complete fire department access. Number. 3 A 6' line Is noted on the plans; however the fire sprinkler line size shall be calculated to determine the proper size. Sprinkler drawings and calculations shall be submitted separately during the building permit approval process. Number. 4 A note has been added to the drawings concerning the knox box. The exact location shall be determined In the field as approved by the Poudre Pre Authority. Number. 5 No drawing adjustments are required. Number. 6 The commercial cooking hoods Inside the building will be Installed with fire protection systems. These will be noted and submitted separately during the building permit approval process. Number. 7 A note has been added to the building permit submission _ drawings concerning the occupant load sign. The exact location near the exit door shall be approved In the field by the Poudre Fire Authority. Number. 8 A note has been added to the drawings concerning the address numerals. The exact location shall be submitted during 3 the building permit approval process and shall be approved In the field by the Poudre Flre Authority. Number. 9 Sprinkler drawings will be submitted during the building permit process. No comment Is required. _Department Stormwater Engineering Topic: General Number-1 A drainage letter has been prepared and submitted. Number. 2 Stormwater details have been included In the utility set. Number. 3 A dralnoge and erosion control plan along with the appropriate details has been Included In the utility set. Number. 44 This Issue Is noted. Department Transportatlon Planning Topic: Landscape Plans Number. l This Issue Is noted. Department Water -Wastewater Engineering Topic: Construction Drawings Number.l A utlllty plan has been provided In the utility set. The fire line and new water meter location have been shown on the plan. Number. 2 The grease Interceptor Is now shown on the utility plan. Number. 3 Standard details have been added. Note that the grease Interceptor detail Is shown within the mechanical engineering drawings and will be submitted with the building permit drawings. Department Zoning Topic: Building Elevations Number. 4 The additional bullding elevations have been added, see the attached drawings. The elevation of the south slde of the building does not exist, since the building Is bordered by the adjacent building along that side. Topic: Landscape Plans Number. 3 There Is a large existing tree located In thls Island that will conflict with additional trees. 4 - Addliional tree (noted on the redllnes) between the parking and the north existing structure: Space for a tree In this location Is extremely limited after counting car overhang and proximity of the existing off-slte bullding. The area Is fully covered with shrubs as an alternative. Topic: Site Plan Number. 1 The additional lot area Is shown on the attached plans. Number. 2 The addtional fence height Is shown on the attached plans. Department Stormwater Floodplain Topic: General Number. 1 and 2 This Issue Is noted. Number. 3 The required ceriiflcations are in -process and will be delivered to the City of Fort Collins upon completion. Number. 4 This Issue is noted; the checklists were obtained and utilized in the preparation of the plans. Number. 5 This Issue Is noted. Topic: Plans Number. 6 The Redlines have been addressed. See attached documents. Number. 7, 8, and 9 These notes have been added to the grading and drainage sheets. Number..10 The provided note was added to the landscape notes (#15). Number. 11 The provided note was added to the Site Plan, and the grading and drainage sheets. Number. 12 The floodplalns and floodways have been added to the drawings. Number. 13 The cross section running through the site and the BFE have been added to the drolnoge plan. Thank you, Greg Howes, ALA 5 Appendix E-4 City of Fort Collins Requirements for Utility Plans Project Name: Project Planner: Design Engineering Firm: Developer: All applications for final development plans must include final development plan documents ("Utility Plans"). The standards for these Utility Plans are set forth in Division 3.3 of the City of Fort Collins Land Use Code, these Standards, and as further noted in this appendix. THIS LIST PROVIDES THE DESIGN ENGINEER INFORMATION TO HELP HIM/HER DETERMINE WHAT THE CITY OF FORT COLLINS EXPECTS TO SEE ON DRAWINGS SUBMITTED FOR REVIEW AND APPROVAL. THIS LIST IS NOT INTENDED TO BE ALL-INCLUSIVE AND SHALL NOT, IN ANY WAY, OVERRIDE OR SUPERCEDE THE STANDARDS SET FORTH IN THE CITY OF FORT COLLINS LAND USE CODE AND/OR THE LARIMER COUNTY URBAN AREA STREET STANDARDS MANUAL. ADDITIONAL INFORMATION MAY BE REQUIRED ON SPECIFIC PLAN DESIGNS AND IS NOT INTENDED TO RELIEVE THE DESIGN ENGINEER OF THEIR OBLIGATION TO UTILIZE GOOD ENGINEERING PRACTICES. The two 'check list" columns to the left of the Utility Plan requirements below are provided for the convenience of both City staff and the Developers Engineer. The columns are organized as follows: (1) The first column, 'Applicant validation," is provided as a check list for the applicant to ensure that all required items are addressed within the Utility Plans. (2) Upon submittal, City staff will check off the items in the second column to ensure that all the required items are included within the Utility Plans. PLEASE NOTE: All items with an arrow (►) are items required prior to public hearing. All items without an arrow will be required during final compliance. Last edited: 3123107 Appendix E-4 Applicant Staff Validation Check N/A Included I. Cover Sheet ✓ A. ► Preamble title of "Utility Plans For..." ✓ B. No. Legal description below the project name ✓ C. ► Vicinity map including project location, nearest two Arterial Streets, existing street system, street names for collector and Arterial Streets, City limit lines, north arrow and major public facilities ✓ D. ► Index to all sheets contained within the Utility Plan placed on right side of sheet. ✓ E. The current date (month and year) under the legal description ✓ F. General Construction Notes, and if applicable, CDOT General Construction Notes (see attached Appendix E-2) placed on left side of sheet �L G. ► Project Bench Marks referencing the City of Fort Collins' datum ✓ H. Reference to the updated or current soils investigation report ✓ I. Stamp and signature of a licensed Civil Engineer registered in the State of Colorado (on approved final development plan documents) in accordance with State Statutes and Board Rules. ✓ J. The following statement is annotated on the Cover Sheet: I hereby affirm that these final construction plans were prepared under my direct supervision, in accordance with all applicable City of Fort Collins and State of Colorado standards and statutes, respectively, and that I am fully responsible for the accuracy of all design, revisions, and record conditions that 1 have noted on these plans. ✓ K. ► Typical street section(s) provided for each street type being proposed. Sections include appropriate horizontal and vertical dimensions and cross slopes, type of curb and gutter and any deviations from standards. See Figures 7- 1F thru 7-13F. (These sections may also be located on the plan/profile sheets or a separate sheet within the utility plan set.) ✓ L. The names, addresses, phone numbers for the Developer(s), Owner(s), and Consultant Engineer are provided. ✓ M. Indemnification Statement provided and annotated as follows: These plans have been reviewed by the Local Entity for concept only. The review does not imply responsibility by the reviewing department, the Local Entity Engineer, or the Local Entity for accuracy and correctness of the calculations. Furthermore, the review does not imply that quantities of items on the plans are the final quantities required. The review shall not be construed in any reason as acceptance of financial responsibility by the Local Entity for additional quantities of items shown that may be required during the construction phase. Last edited : 3123107 2 Appendix E-4 Applicant Staff - Validation Check N/A Included It. Grading, Drainage & Erosion Control Plan ✓ A. ► Drainage report submitted ✓ B. ► Existing and proposed contours provided at 2' (min.) intervals and labeled: ✓ C. ► Contours extended a minimum of 50' offsite and be into existing contours. ✓ D. Finish grade elevations provided for streets, lot comers, and finish floorsttop of foundation of buildings for all lots. ✓ E. This statement provided: "The top of foundation elevations shown are the minimum elevations required for protection from the 100-year storm. ✓ F. No. Drainage arrows are provided and show positive drainage to streets or to an approved drainage facility. ✓ G. Phasing of development and construction of all public improvements. All public improvements within each phase stand alone. Phases separated by a thick, ghosted line and identified by either numbers or letters. ✓ H. Temporary and long term erosion control devices are provided and labeled. ✓ I. ► Revegetation methods and specific notes are provided. ✓ J. ► If the project proposes any construction in a floodplain, please pick up the separate "Preliminary Floodplain Submittal Requirements" available at the Stormwater utility. III. Overall Utility Plan Sheet(s) A. Streets ✓ 1. ► R.O.W., property lines and easements with dimensions and labels. ✓ Z ► Cross -pans ✓ 3. ► Access ramps ✓ 4. ► Curb and gutter ✓ 5. ► Sidewalks ✓ 6. ► Driveway locations ✓ 7. ► Medians, including flowline and lip of gutter ✓ S. General location of signs(speed, stop, monument, etc.) ✓ B. Phasing lines of development and construction of all public improvements. All public improvements within each phase stand alone. Phases separated by a thick, ghosted line and identified by either numbers or letters. Last edited: 3123107 3 Appendix E-4 Applicant staff Validation Check N/A Included ✓ 10( !Ar Last edited: 3123107 C. Water Facilities 1. ► Mains with sizes 2. ► Fire hydraht locations 3. ► Valves 4. Meter pits and curb stops S. ► Manhole locations 6. ► Show service locations at preliminary, except for single family uses. 7. Waterline lowerings 8. Dimensioning of manholes and cleanouts from the centeriine of the roadways. D. Sanitary Sewer Facilities 1. ► Mains with sizes 2. ► Manhole locations and numbering 3. Length of segments between manholes 4. Type of pipe 5. Slopes 6. Clean -outs 7. ► Show services at preliminary,except for single family uses. E. Storm Sewer Facilities 1. ► General layout of stormsewers, channels and swales. 2. ► Manhole locations 3. ► Junction structures 4. ► Clean -outs 5. ► Type of pipe 6. ► Sizes 7. ► Slopes 8. ► Length of segments between manholes 9. Subdrains (where applicable) 10. ► Manhole numbering F. ► Existing features shown for a minimum of 150' beyond the project limits G. No. Proposed utility connections with existing utilities. 4 Appendix E-4 Applicant Staff Validation Check N/A Included IV. Street Plan and Profile Sheets (Horizontal Alignment) ✓ A. ► Largest possible curve radii used on Arterial and Major Arterial roadways. Minimum curve radii used only where necessary. See Table 7-3. ✓ B. ► Minimum tangent lengths at intersections. See Table 7-3. ✓ C. ► Crossing streets intersect at 900 (minor street can vary ±10"). ✓ D. ► Angle of departure of streets at intersections do not exceed 100 for the length of the required tangent, ✓ E. ► Minimum tangent between reverse curves, provided. See Table 7-3. ✓ F. ► Broken -back curves are separated by a length equal to 2 times the tangent length. See Table 7-3. ✓ G. ► Compound curves: ratio value of s1.5 (Larger radius divided by the smaller radius). ✓ I. ► Minimum centerline arcs for curves with deflection angles 10" or less. See Table 7-5. ✓ J. Horizontal curves do not begin at the top of a crest curve or the bottom of a sag curve. ✓ K. ► Tapers and transitions: Refer to Chapter 8 ✓ L. ► Sight distance triangles and easements: Shown on all plan & profile sheets. Sight distance easements dedicated on the Plat. ✓ M. ► Minimum Local Street widths provided per Table 7-1 and are consistent with the TIS. ✓ N. ► Access ramps and crosswalks provided. Crosswalk lengths are a maximum of 56' in length. See Chapter 16, Pedestrian Facilities Design and Technical Criteria. ✓ O. ► Minimum of one mid -block access ramps provided at all "T" intersections. ✓ P. ► Complete horizontal alignment includes, but is not limited to: centerline of roads, intersecting streets, driveway locations, and storm drainage facilities. ✓ Q. ► Existing and proposed Property and/or ROW lines, easements and/or tracts provided, dimensioned, and labeled dearly. R. Existing utilities and structures (shown as phantom line) included: ✓ 1. ► Storm sewer and appurtenances ✓ 2. Fence lines and gates ✓ 3. ► Water lines and appurtenances ✓ 4. ► Ditches and swales Last edited: 3123107 5 Appendix E-4 9 Applicant Validation N/A Included ✓ ✓ ✓ I Last edited: 3123107 staff Check 5. No. Electric lines and appurtenances 6. ► Curbs and gutters 7. ► Sanitary Sewer lines and appurtenances 8. ► Pavement limits 9. ► Telephone lines and appurtenances 10. ► Bridges and/or culverts 11. ► CAN lines and appurtenances 12. ► Guardrails 13. Signs 14. ► Gas lines and appurtenances S. Station, critical elevation, and dimension of all existing and proposed utility and/or drainage structures provided. T. Intersections show construction and lane details for new and existing facilities for a minimum of 150' beyond the limits of construction. V. Street Plan and Profile Sheets (Vertical Alignment) A. ► Maximum grades for streets comply. See Table 73. B. ► Maximum grades of cul-de-sacs are 3.0%. C. Continuance of profile and ground lines for all Local and Collector Streets that dead end (excluding cul-de-sacs) shown for 500' beyond the proposed construction. D. Continuance of profile and ground lines for Arterial Streets shown for 1000' beyond the proposed construction. E. ► Minimum crest and sag curve lengths for street classifications. See Figures 7-17 and 7-18. Lengths must meet or exceed these minimums. F. Crest curves: street centerline, curb and gutter designed with vertical curves. See Table 7-3. G. Sag curves: street centerline and flowline designed with a vertical curve (see exception below). See Figure 7-18 and Table 73. H. Sag Curves: For grade changes <1.0%: gutter flowlines at low points are not designed with vertical curves, but must meet the minimum .5% grade into the inlet. I. Sag Curves: For grade changes >1.0%: both street centerline and curb and gutter are designed with vertical curves, but a minimum flowine grade of .5% must still be maintained. J. ► Single point grade breaks do not exceed 0.40%, except at inlets where min .5% grade into the inlet is required. 6 Appendix E-4 Applicant Staff — Validation Check N/A Included K. ► Series of grade breaks meet the vertical alignment criteria for the design speed of the roadways. L. ► Minimum centerline and flowline grade .for streets is 0.50%. M. Minimum flowline grade for cul-de-sacs is 1.0%. N. Minimum desirable grade around curb returns is 1.0%. Minimum allowable grade around curb returns is 0.50%. O. Curb return profiles (except medians) are provided. P. ► Centerline profiles through intersections provided. Q. Flowline profiles provided on both sides of all streets (Final compliance). t/ R. ► Centerline profiles provided for all streets (Preliminary). S. ► Proposed (solid line type) and existing (dashed line type) ground lines provided and labeled. T. ► All proposed and existing vertical curves and grade breaks are dimensioned (Preliminary)/ stationed and labeled dearly (Final compliance). VI. Cross Slopes ✓ A. Minimum cross slope of new streets is 2.0%. B. Minimum cross slope of any reconstruction or overlay is 1.5%. C. Maximum allowable cross slope on all new streets is 3.0%. D. Maximum allowable cross slope on any reconstruction or overlay of existing roadways is 4.0%. E. Street modifications (widening, tum-lane, etc): the widened portion is within the stated limits and is not less than the existing cross slope. ✓ F. When tying to existing cross slopes: Curb and gutter or centerline shall be designed such that the when the existing pavement is overlaid it results in a straight line cross slope grade that meets standards. ✓ G. Cul-de-sacs: See Figure 7-19. VII. Design Speed V A. ► Roadways are designed according to their proper design speed. See Table 73. Vill. Curb Return Radii ✓ A. Curb return radii used in accordance with Table 8-2. B. Minimum desirable flowline grade around curb returns is 1%. ✓ C. Minimum allowable flowline grade around curb returns is 0.50%. Last edited: 3123107 7 Appendix E-4 'i Applicant Staff Validation Check N/A Included ✓ V( ✓- IX. Medians A. Provided as stated on Figures 7-1F thru 7-13F. B. ► Width of medians are no less than 4' wide. C. ► Turn Lane and Access: Left -turn Janes (where warranted) designed using criteria contained in Figures 8-2, 8-3 & 8-11. D. No. Landscaped medians -include drainage facilities to handle sprinkler runoff and nuisance flows. Refer to Appendix C. E. ► Median(s) are designed with keyed curb or curb with outfall gutters (if gutters are not needed to handle drainage), or medians are designed with curb with inflow gutters (if gutters are, needed to handle drainage). F. ► Nose of median(s) located such that vehicle turning Movements comply with vehicle tracking templates. G. ► Transition points of medians do not have "angle points". A 100' minimum radius with minimum arc length of 50' is used at transition locations. H. ► Permanent structures within medians are a minimum of 5' from the closest travel lane: I. ► Pedestrian refuge areas are provided in the noses of medians. See Chapter 16, Pedestrian Facilities Design and Technical Criteria. J. Profiles shall be provided for all areas of inflow curb and gutter. Profiles or adequate spot elevations, dimensions and any other information necessary for review and construction shall be provided for all medians. X. Cul-de-sacs ✓ A. ► Provided only on Local Streets. See Figures 7-19 & 7-21. Vol B. ► Maximum length of 660' (1320' max.) if fire sprinkler systems are installed in structures. ✓ C. ► Minimum radii used. See Figure 7-19. XI. Eyebrows ✓ A. ► Provided only on Local Streets. See Figure 7-23. ✓ B. ► Spaced in conformance with the requirements in Chapter 9, Access Requirements and Criteria, XII. Dead-end Streets ✓. A. ► Temporary dead-end streets provided only on streets that do not have direct access from adjoining property. ✓ B. ► Temporary turnarounds with a minimum radius of 50' provided for permitted dead-end streets. See Figure 7-26. ✓ C. Temporary access easements dedicated on the Plat. Last edited: 3123107 8 Appendix E-4 Applicant Staff Validation Check N/A Included ✓ ✓ ✓ 46 XIII. Driveways A. Where curb cuts are provided, concentrated runoff from adjoining properties does not discharge across the sidewalk. B. ► Spacing of curb cuts conform to spacing requirements. See Figure 9-1 and Table 7-3 C. Drive approaches slope toward the street. D. ► Driveways intersect streets at 9W t10° for a minimum of 25' measured perpendicular to the street from the curb edge or EOA. E. ► All access/driveway approaches are paved with'Portiand cement from the street to the ROW. 1. SF Residential Approaches a. ► Minimum width of driveway(s) is 12' and the maximum width is 24'. See Standard Drawings 706 and 707. b. ► Sidewalks are continuous through driveways. See Standard Drawing 1601. C. When pedestrian accessible driveways are required in lieu of mid -block access ramps, the slope of the driveway is < 1:12 and spaced at 300' intervals on both sides of the street. 2. High Volume Driveway a. ►' Driveways accessing Arterial Streets or meeting criteria in Section 9.3.2.A shall conform with Standard Drawing 707. b. No -* Maximum width is 36'. If wider, a median separates the inbound and outbound traffic. 3. ► Multi -Family Dwelling Unit Driveways Minimum width of driveway(s) is 24'. Minimum of 28' for driveways serving 12 units or more with maximum width of 36'. XIV. Grading In The ROW A. Maximum slope for all areas within the ROW is 4:1. B. Maximum slope outside of the ROW affecting public improvements is 4:1. C. Retaining walls provided where slopes exceed 4:1. Retaining walls designed in accordance with Chapter 11, Structures. D. Minimum slopes in non -roadway areas is 2.0% Last edited: 3123107 9 Appendix E-4 y a Applicant Validation N/A Included Staff Check XV. Sub -drains A. Engineered sub -drain systems meet criteria set forth in Section 7.7.3 B. Hydrologic study submitted if criteria in Section 5.6.1. A. is met or sub -drains are needed for basements. XVI. Cross -pans A. Cross -pans adjacent to Local Streets are a minimum of 6' wide and %" deep. B. Cross -pans adjacent to Collector Streets are a minimum of 8' wide and 1%" deep. C. Cross -pans adjacent to Arterial Streets are a minimum of 10' wide and 1%" deep. D. Mid -block cross -pans are a minimum of 12' in width and 1%" in depth. E. Minimum grade of cross -pans are 0.50%. F. Pavement transitions approaching cross -pans designed using the design speeds in Table 7-3 and meet the requirements of Figure 7-27 and Standard Drawing 710. G. Spot elevations provided as shown on Figure 7-27. XVII. Inlets A. ► Inlets are not located within the curb returns. XVIII. Bus Bays A. ► Bus bays are 11' wide. B. ► Bus bays are constructed with concrete in accordance with Chapter 22, Construction Specifications. C. ► Bus bays shall be designed in accordance with Section 7.9 and Standard Drawing 711. XIX. Intersections A. ► Travel lanes are aligned through intersection(s) (a 2' shift Is allowed in hardship cases only). B. ► Intersections cross at 900 t10°. C. ► Horizontal alignment of streets thru intersections are designed in accordance with Table 7-3. D. ► Exclusive left -turn lanes provided where required. See Section 8.2.5, Exclusive Left Turn Lanes. E. ► Exclusive right -turn lanes provided where required. See Section 8.2.6, Exclusive Right Turn Lanes. F. ► Adequate turning radii used for each type of intersection. See Section 8.2.8, Turning Radius. G. ► ROW is dedicated as shown on Figure 8-12. Last edited: 3123107 10 Appendix E-4 Applicant Staff + Validation Check N/A Included ✓ H. ► Additional ROW dedicated for right and left turn lanes. ✓ I. ► Sight distances comply with Figure 7-16. ✓ J. ► Street grades approaching intersections shall be between 0.50% (min.) and 4.0% (max) for a distance equal to the tangent length of the street classification. See Table 7-3) ✓ K. ► Profile grades within the intersection do not exceed 3% XX. General Requirements ✓ A. Phased improvements shown dearly. ✓ B. Phases within the project limits stand alone and do not leave necessary improvements to future projects. ✓ C. ► Design of State streets meet the requirements presented in the State Highway Access Code Manual. ✓ D. ► North arrows and the appropriate bar/graphic scale(s) are provided. ✓ E. ► Existing features adjacent to this development are shown in a ghosted or alternate line weight. ✓ F. The City's signature block is provided in the lower right corner of each sheet contained within the utility plan set. Each signature block measures 3%" high by 4%" wide. ✓ G. ► Ditch company approval block is provided. ✓ H. ► Water and Sanitary District approval block is provided. ✓ I. County approval block is provided. ✓ J. CDOT approval block is provided. ✓ K. ► Title block is provided on each sheet of the utility plan set and includes the project name, sheet name, engineer's name, address, telephone number and fax number, sheet numbering, and revision block. ✓ L. ► The utility plans correlate with the Site and Landscape Plans ✓ M. Spot elevations at all intersections provided as shown on Figures 7-27 and 7-28. ✓ N. ► Proposed construction within the Property boundary drawn with solid lines and existing features shown with hidden or dashed lines. ✓ O. Stations and elevations provided at all PC's, driveway intersections and roadway intersections in both plan and profile views. �' ✓ P. Flowline curve table provided on each plan and profile sheet that includes radius, angle, arc length, and tangent length. a Last edited : 3123107 11 Appendix E-4 • w' Applicant Staff Validation Check N/A Included IFA N NA Last edited : 3123107 Q. Centerline stationing is the standard and shall be used except at cul-de-sacs, where flowline stationing is used (Station equations provided.), unless approval to use flowline stationing is given. R. ► Street names provided on all sheets. T. ► All easements shown in the plan views. U. ► Match -lines provided in both plan and profile. Page number, station and elevation included. V. The scale of all sheets are as follows: 1. ► Horizontal -1" = 20', 30', 40', or 50' 2. ► Vertical -1" = For 10' 3. ► Overall Plan -1" = 100' W. ► All private improvements, including but not limited to, roadways, driveways, utilities, etc. are clearly shown and labeled as such. X. ► A legend is provided on each sheet identifying the symbols used on that particular sheet. Y. ► Key map is provided on the plan and profile sheets (for utility plans having 3 or more plan and profile sheets). XXI. ► Street Cross Sections (Preliminary = typical for each street) A. Cross sections for Arterial Streets and Collector Streets are provided at 50' intervals. Cross also required where special conditions warrant the need (i.e. widening of an existing street). The interval may be adjusted where site topography is unique. 1. Information Provided on each Cross Section a. ► Curb & gutter, existing(f) and proposed(') b. ► Roadway surface, existing and proposed c. No. Sidewalk, existing and proposed d. ► Cross slopes, existing(f) and proposed(') e. ► ROW, existing and proposed f. Side slopes, existing and proposed, 15' beyond the proposed ROW g. Stations h. Proposed flowline and centerline elevations I. Utility crossings J. No. Dimensions k. Areas of overlay, milling, pavement removal and/or reconstruction. 12 Appendix E-4 w Applicant staff Validation Check N/A Included XXIL Plat A. ► Maintenance Guarantee, Repair Guarantee, Notice of Other Documents notes. B. ► Planning & Zoning Board/Hearing Officer certification statement (to be signed at final compliance). C. ► Surveyor certification statement (to be signed at final compliance) D. ► Statement(s) of land ownership E. No. Statement(s) of ownership and/or maintenance of all tracts. F. ► . Statement(s) of the dedication of any easements, ROW, tracts, and other public areas. G. ► Vicinity Map: Project location, nearest 2 Arterial Streets, street names, City limits, major public facilities. H. Curve data complete for all curves. I. ► 2 ties to aliquot comers. J. No. All existing and proposed easements and ROW dearly defined. K. ► Adjoining properties labeled. L. ► Scale, graphic scale, north arrow, date of preparation, complete title w/ location. M. ► Boundary legal description doses. N. ► Lot lines. O. ► Designation of areas subject to flooding, including floodplain, floodway, and product corridors. (Elevation Datum must be referenced to City of Fort Collins datum.) Last edited: 3123107 13 Appendix E-4