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HomeMy WebLinkAbout 16-33 Approving Final Plat for Del Camino Central Filing 2RESOLUTION NO. 16- 3 3 A RESOLUTION APPROVING A FINAL PLAT FOR DEL CAMINO CENTRAL, FILING NO. 2 WHEREAS, there has been submitted to the Board of Trustees a request for approval of a final plat for Del Camino Central, Filing No. 2; and WHEREAS, all materials related to this application have been reviewed by Town Staff and found with conditions to be in compliance with Town of Firestone subdivision and zoning ordinances, Development Regulations, and related Town ordinances, regulations, and policies; and WHEREAS, the Firestone Planning and Zoning Commission held a properly noticed public hearing on the application, and has forwarded to the Board of Trustees a recommendation of approval with conditions; and WHEREAS, after aduly-noticed public hearing, at which evidence and testimony were entered into the record, the Board of Trustees finds the final plat should be approved subject to certain conditions. NOW, THEREFORE, BE IT RESOLVED BY THE BOARD OF TRUSTEES OF THE TOWN OF FIRESTONE, COLORADO, Section 1. The final plat for Del Camino Central, Filing No. 2 is hereby approved, subject to the conditions set forth on Exhibit A attached hereto and incorporated herein by reference. PASSED AND ADOPTED this 9t' day of November, 2016. Medina, Town Clerk 1 Sorensen, Mayoi EXHIBIT A Final Plat Del Camino Central, Filing No. 2 Conditions of Approval 1. Submit inclusion documents to the Carbon Valley Parlcs and Recreation District prior to filing the final plat with the Town for recording. 2. Provide an updated title commitment prior to recording. 3. Revise the introductory sentence in the Ownership and Dedication block to read as follows: "Know all men by these presents, that the undersigned Sand Land Inc. and Sand Land Properties, LLC aka Sand Land Properties LLC...." 4. Revise the vicinity map to remove all bold lines except for those showing the boundary of the subject property. 5. Revise the application materials and otherwise address the Town Engineer comments set forth in the memo dated October 19, 2016, attached hereto as Exhibit A- I. 6. Execute a subdivision agreement, in a form to be approved by the Town Attorney. 1 I ///2016 11:43 Arif [l:nil:] R�Firestone�Subdivisions�DzlCanuno Central F2 FP 2016.18 res.docx G EXHIBIT A-1 Del Camino Central, Filing No. 2 Final Plat Town Engineer's Memo dated October 18, 2016 COLORADO CIVIL GROUP, INC. Engineering Consultants TO: Mr. Bruce Nickerson, The Nickerson Company, Town Planner FROM. Dave Lindsay, Colorado Civil Group, Inc., Town Engineer ' t `- Amber Messersmith, Colorado Civil Group, Inc., Town Engineer K.a1' DATE: October 19, 2016 SUBJECT: Del Camino Central Filing No. 2 /Gateway North PROJECT No.: 0668.0047.03 We have completed our review of the: Del Camino Central Filing No. 2 Final Plat and Gateway North Final Utility Plan 2"d submittal application received on September 23, 2016. We offer the following comments: General 1. The Final Utility Plans include public improvements for Arbor St, Union St, WCR 24.5, the Gateway North Multi- family, and Gateway North Storage improvements. 2. The Applicant must obtain written permission from the ditch company to install the box culvert under Arbor Street and submit it to the Town prior to recording the Final Plat. 3. The Applicant provide the Town with a copy the drainage easements across the Vara property and the Weld County property for the proposed drainage facilities prior to recording the Final Plat. 4. The Town needs to be know who is maintaining the off -site drainage conveyance and what mechanism is in place to assure that it is being maintained. Submittal Binder: 5. Title Commitment (10.3.5) — An updated Title Commitment was not included with the re -submittal. The previously submitted Title Commitment lists the owners in fee as Sand Land, Inc. a Colorado 3 corporation and Sand Land Properties, LLC aka Sand Land Properties LLC with an effective date of December 16, 2015. There does not appear to be any deeds of trust or liens on this property. An updated Title Commitment is required prior to recording, dated no later than one month prior to the application date. 6. Environmental Assessment (10.3.12) — The Phase I ESA titled "Gateway North Parcel 131302311079 Northeast Corner of Firestone Boulevard and East Interstate 25 Frontage Road Firestone Colorado 80504" prepared by National Inspection Services dated July 5, 2016 was reviewed. There are no issues concerning the land that will be dedicated to the Town. The report does not need to be revised or re -submitted. The report discusses an oil spill that occurred in 2015 (approximately 2 barrels of oil) from the Kerr-McGee's Varra 14-2 and 35-2 oil/natural gas wells located on Lot 2, Block 1. Groundwater wells are being monitored on a quarterly basis until benzene concentrations stabilize under the Colorado Groundwater Standard, 7. Traffic Impact Study (10.3.13) -The Traffic Impact Study (TIS) titled "Firestone Multi -Family and Storage" and was prepared by Eugene G. Coppola dated September 7, 2016 was reviewed and approved. The report covers the Gateway North -Multi -Family and the Storage developments and assumes the construction of Union Street and Arbor Street (from Firestone Blvd. to WCR 24'/2). 8. Water Service Calculations (10.3.11) — AWWA water service sizing calculations were provided for the 24-plex building only. The 1.5" tap/meter is acceptable. AWWA water service sizing calculations are required for the 21-Plex building, the Clubhouse/Pool, the Maintenance building and the Storage Office. No irrigation demand is required in the Multi -Family calculations since there is a separate irrigation tap and meter for this site. The Storage office calculations must include the irrigation demand. The water service sizing calculations need to be revised and re -submitted with the next submittal. 9. Subdivision Agreement —The Town will prepare a draft of the Subdivision Agreement. We have reviewed the Exhibit B submitted showing Phases I-V. The phase numbering needs to be made consistent between the Exhibit B's and the FUP's (i.e. Phases 1, 2, 3, 4, 5 or Phases I, II, III, IV, V). Refer to the Exhibit B redlines for specific comments. Final Drainage Report (10.3.15►: 10. A Final Drainage Report (FDR) titled "Drainage Conveyance Narrative for Gateway North (aka Del Carrion Central) prepared by RidgeTop Engineering &Consulting dated September 20, 2016 was reviewed for the first time. 11. It is our understanding that the off -site drainage conveyance design was rejected by Weld County and we understand a re -design is under way. The following comments should be considered general. 12. The FDR needs to, include a vicinity map showing the area of this FDR. The FDR also needs to include a Drainage Map detailing the basins, the design points and the off -site ditch. Design Points are needed for every storm pipe/culvert. 13. Narrative —The Storage impervious area needs to be made consistent on pages 1 and 3. See other redlines. 14. Runoff Calculations — The intensity for the DCC appears to be incorrect. The 100-year flow needs to be updated as well as the total 100-year flow for the entire development. The 2-year runoff calculations need to be included in the report. The runoff calculations need to be provided for each basin/design point (each culvert, inlet, etc.). The Firestone OF curve needs to be included in the FDR. 15. Street Capacity/Inlet Sizing —Double check ponding depth at inlets. Refer to report for redlined comments. 16. 5'x3' box culvert -Where do the calculations show that the box has the 112.83cfs capacity stated in the FDR narrative? This cannot be treated like a simple culvert. We need to see UD-Sewer hydraulic calculations for the entire length of the 5'x3' box culvert/storm sewer (taking into account the headwater, tailwater and losses). 17. Off -site Drainage Conveyance — It appears from the HY-8 Culvert Analysis for the off -site drainage conveyance box culverts that there is essentially no freeboard in the 3' driange channel and rip rap is needed due to the high velocities on the downstream end of the culverts. The Manning's coefficient should be changed to 0.013. The length of Box 2 differs from the FUP. Where are the hydraulic calculations for the off -site drainage conveyance? 18. Culvert Calculations (WCR 24/12) —Culvert calculations are provided for the 4 northernmost culverts. All of the manning's n coefficient should be changed to 0.013. We need the runoff calculations to these culverts to confirm the pipe sizes. 19. All of the storm sewer/culverts need to be named and labeled in the FDR and the FUP. We need to see the basin delineations, the runoff calculations to each culvert and the culvert hydraulics to confirm the pipe size for all of the culverts shown. Final Plat Filing No. 2 (1=0-02): 20. Sheet 1 (11.4.27 Ownership and Dedication) — The owners names in the dedication block must appear exactly like they do in the title commitment: "...that the undersigned Sand Land Inc. and Sand Land Properties, LLC, aka Sand Land Properties LLC being the owner(s) of the land shown..." (repeat) 21. Refer to the Final Plat for any additional redlined comments. Final Utility Plans (FUP): 22. Sheet CV-1 (Notes) —The note on the FUP cover should be replaced with the following note: "The approval of these construction drawings is for the public improvement only. The private improvements are shown for reference only and are not approved with these plans." 23. Sheets GE-1.0-1.4 (Grading and Erosion Control, Arbor) —See Sheets GE-1.1 and GE-1.1A for minor redlines. 5 24. Sheet GE-1.0 (Grading and Erosion Control, Arbor) - The existing storm pipe needs to be called out to be removed. The culvert profiles need to be labeled to match the FDR (Pipe #144). 25. Sheets GE-1.1 & 1.2 & 1.4 (Grading and Erosion Control, Arbor) -The minimum size for storm sewer in the Town's ROW is 184ches. The profile labels in the plan view need to be corrected on GE-1.1. Double check that the inlet ponding will not back into the access drives in the ultimate condition. 26. Sheet GE-1.1A (Grading and Erosion Control, Arbor) -Details need to be included for the double type 'R' inlets and the manhole structure/junction box. Show and label the limits of the drainage easement needed to install the off -site drainage conveyance. The type 'R' inlets do not appear to be drawn correctly in this profile. The inlets need to be set for the ultimate flowline. Clarify the inlet rim elevation (rim of inlet, flowline of inlet, throat of inlet). 27. Sheets GE-1.2 & 1.3 (Grading and Erosion Control, Arbor) -The length and material of pipe need to be called out of the emergency culverts. These culverts need to be discussed in the FDR. 28. Sheets GE-1.4 & S-1 (Grading and Erosion Control &Typical Section, Union) -The cross slope on Union Street must be 2-percent. 29. Sheets GE-1.5-1.7 (Grading and Erosion Control, Ditch) -Show and label the limits of the drainage easements needed to install the off -site drainage conveyance. The box culverts need to be labeled to match the FDR (Box 3, Box 2 and Box 1). 30. Sheet CR-2.0 (Street P&P, Arbor, Pork Chop) -The pork chop lane widths do not meet the Town's minimum widths for Firestone Fire Trucks (these minimum lane widths were determined by running a Autoturn with a ASSHTO Bus45). Refer to the Town's detail. 31. Sheets CR-2.0, 2.1 & 2.3 (Street P&P, Street Lights) -The Town requires cobra head street lights CI t the Arbor St. intersections. See redlines for locations. We will email the Applicant's engineer the temporary cobra head street light detail. 32. Sheet (.R-2.1 (Street P&P, Arbor) -The 8-inch water line crossing needs to be shown (see Sheet C-3.2 for revised location). 33. Sheets CR-2.4 & 2.5 & 2.7 (Street P&P, Arbor) The existing 12" water line will now be deeper than 5'. Call out of the addition of a nut extension on any existing valves deeper than 5'. 34. Sheet CR-2.6 (Street P&P, Arbor) -The vertical curve at Station 36+00 has been modified to meet the minimum curve length, but the A.D. should be changed from 2.3% to 2.5%. 35. Sheet CR-2.7 (Street P&P, Union) -The profile scale needs to be correctly labeled as 1 "=40'. 36. Sheet S-1 (Typical Sections) -Sections 3 and 4 have the curb and gutter incorrectly labeled. The Town's vertical curb has a 2' gutter. For Section 3, the raised median should be corrected to 8" barrier curb. The Union St. cross slope needs to be corrected to 2%. 31. Sheet S-6, S-10 & S-11 (Cross Section) - See redlines for minor adjustments. The raised median curb should be corrected from Stations 34+50 to 37+00. 38. Sheets CH-4.0-4.6 (Striping, Arbor) -Single reflector delineator posts need to be added along Arbor St./WCR 24.5 where there is no curb & gutter (Station 5+00 to 34+50). 39. Sheet CH-4.0 (Striping) -All of the signs and striping for the raised pork chop island need to be labeled. 40. Sheet CH-4.2 & 4.3 (Striping, Arbor) -The striping labels for the 12" diagonal lane transitions are missing from these sheets. 41. Sheet CH-4.6 (Striping, Arbor) -Label the new turn arrows. 42. Sheet CH-4.7 (Striping, Arbor/Firestone) -See redlines for minor comments. 43. Sheets TS-1-TS-6 (Traffic Signal) -The name blades for the intersection need to be revised. For eastbound & westbound Firestone Blvd, the road name blades should be stacked vertically and read "Arbor St." with a directional arrow to the north and "Jake Jabs Blvd." with a directional arrow to the south. The mounting bracket for the stacked name blades must be called out/detail shown. The note "FOR SUBMITTAL NOT FOR CONSTRUCTION" needs to be removed from this Final Utility Plan set. 44. Sheet C-2.0 (Overall Grading Plan) -The roadways and lots need to be labeled. 45. Sheet C-2.3 (Grading Plan, SE Corner) -The outlet pipe size need to be corrected. We will confirm the storm sewer and pond information with the MUlti-Family FDP/FDR. 46. Sheet C-2.5 (Grading Plan, Storage) - We will confirm the storm sewer and pond information with the Storage FDP/FDR. 47. Sheet 0-3.0 (Overall Utility Plan) -WCR 24.5 needs to be labeled. The lots need to be labeled. The building letters need to be labeled. There are two water services shown to the clubhouse/pool, whereas Sheet C-3.3 only shows a single service. Refer to redlines for additional valves. 48. Sheets C-3.0, 3.2 & 3.5 (Utility Plan, water loop) -The 8-inch water line loop between the multi- family and storage sites needs to be located under the pavement of access drives, so that the water line does not have to be 8' deep for the Arbor St. roadside ditches. 49. Sheets C-3.1-3.4 (Utility Plan, MF) -See redlines for minor comments. Add and remove water line valves where redlined. 50. Sheet C-3.3 (Utility Plan, MF) -The clubhouse/pool water service tap and meter must be the same size. The Applicant should submit AWWA water service sizing calculations for the clubhouse/pool and maintenance building with the MultkFamily FDP so we can verify the tap/meter size. The maintenance building meter needs to be located closer to the water main, see redlines. 7 Misc: 51. Sheets C-3.5 (Utility Plan, Storage) — See redlines for minor comments. Add and label water line valves where redlined. The Applicant should submit AWWA water service sizing calculations for the storage office with the Storage FDP so we can verify the tap/meter size (the sizing needs to include the irrigation demand). 52. Sheet C-4.1 (Sanitary P&P, MF) —The vertical profile scale is not correct. The elevations of the water crossings do not match Sheet C-4.6. 53. Sheets C4.5, 4.6, 4.7 (Water P&P, Joint Restraint) — The joint restraint calculations need to be included with the next submittal. The upper restraint length does not appear long enough, see redlines. 54. Sheets C-4.6 (Water P&P, MF) —The horizontal profile scale is not correct. Why is the water line lowering at Station 68+50 so deep? The lowering needs to be adjusted. 55. Sheet C-4.7 (Water P&P, Arbor St) —The horizontal and vertical profile scales are not correct. The 60" RCP crossing should be changed to a 5'x3' box culvert. The Town requires a steel casing for each box culvert crossing, refer to the Town crossing detail W-17. The 12" existing water line should be at least 5' deep from existing ground, this profile shows it at 2.5 deep. 56. Sheets C-5.0-05.5 (Phasing) -The phase numbering needs to be made consistent between the Exhibit B's and the FUP's (i.e. Phases 1, 21 3, 41 5 or Phases I, II, III, IV, V). 57. Sheet C-5.0 (Phase 1) —All of the storm culverts and box culverts need to be shown. Label WCR 24.5. The water line plugs and blow -off assemblies need to be called out. The Town will coordinate with the Rural Ditch Company regarding a license agreement where the ditch company would be the owner of the 10'x4' box culvert located under Arbor St. If the ditch company is not amendable to this, then the box culvert would be a public improvement and need to be included in the Phase 1 cost estimate. 58. Sheets C-5.2-5.5 (Phases 2-5) —All water line valves need to be shown on the phasing plans. See redlines. 59. Sheet C-6.0 (Details) —The old Fire Hydrant detail needs to be replaced with the updated detail W- 3. The Steel Casing detail W-17 needs to be added. 60. Sheets C-6.3 & C-6.4 (Details, Outlet Structure) — We will confirm the design of these outlet structures with the Multi -Family and Storage FDP submittals and the re -design of the off -site drainage conveyance. 61. Details — Details needs to be added for the Type R Inlets and the 84' Manhole/junction box structure. 62. Refer to the Final Utility Plans for any additional redlined comments. 63. Need to make independent submittals to the Frederick- Firestone Fire Protection District, the St. Vrain Sanitation District and Weld County Public Works. The Applicant should return their responses to the comments with their next submittal.