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Home My WebLink About20192157.tiffPLANNED UNIT DEVELOPMENT (PUD) CHANGE OF ZONE APPLICATION FOR PLANNING DEPARTMENT USE DATE RECEIVED: RECEIPT # /AMOUNT # /$ CASE # ASSIGNED: APPLICATION RECEIVED BY PLANNER ASSIGNED: Parcel Number 1313-09-2-00-005 Legal Description: SEE ATTACHED. Property Address (If Applicable) N/A Existing Zone District: A Proposed Zone District: PUD I-1 / Total Acreage 6.624 C-3 Acres Open Space: N/A Are you applying for Conceptual or Specific Guide? Conceptual Specific FEE OWNER(S) OF THE PROPERTY (If additional space is required, attach an additional sheet.) Proposed ##/Lots: 1 Name: BOULDER CREEK ESTATES LLC c/o GROW YOUR STORAGE LLC - ATTN: TONY OLLILA Work Phone # (970) 420-1521 Work Phone # Email Address: tony@growyourstorage.cc Address: 1705 FEAGIN DR., LUFKIN, TX 75904 APPLICANT OR AUTHORIZED AGENT (See Below: Authorization must accompany applications signed by Authorized Agent) Name: APERIO PROPERTY CONSULTANTS, LLC - ATTN: AARON THOMPSON Work Phone # (303) 317-3000 Work Phone # Email Address: aaron@aperiopc.com Address: 4032 DEFOE ST., STRASBURG, CO 80136 UTILITIES: Water: LEFT HAND WATER DISTRICT Sewer: ST. VRAIN SANITATION DISTRICT Gas: BLACK HILLS ENERGY Electric: UNITED POWER Phone: CENTURYLINK DISTRICTS: School: RE -1J LONGMONT Fire: MOUNTAINVIEW FIRE PROTECTION DISTRICT Post: US PS I (We) hereby depose and state under penalties of perjury that all statements, proposals, and/or plans submitted with or contained within the application are true and correct to the best of my (our)knowledge. Signatures of all fee owners of property must sign this application. If an Authorized Agent signs, a letter of authorization from all fee owners must be included with the application. If a corporation is the fee owner, notarized evidence must be included indicating the signatory has the legal authority to sign for the corporation. I (we), the undersigned, hereby request hearings before the Weld County Planning Commission and the Board of County Commissioners concerning the proposed Change of Zone for the above --described unincorporated area of Weld County, Colorado: ///t / ;+ • y Signature: Owner or Authorized Agent Date g g /f 848 Signature: Owner or Authorized Agent Date LEGAL DESCRIPTION LOT B OF RECORDED EXEMPTION NO. 1813 -9 -2 -RE -8232, RECORDED APRIL 15, 2002 AT RECEPTION NO. 2942710, BEING A PORTION OF THE NORTHWEST 1/4 OF SECTION 9, TOWNSHIP 2 NORTH, RANGE 68 WEST OF THE 6TH P.M., COUNTY OF WELD, STATE OF COLORADO. CONTAINING 228,528 S.F., 6.62 ACRES MORE OR LESS. Tuesday, January 16, 2001 k 1:l l PM Nancy Dayton 303.673-7248 i !111111 11111 11111 11111 11111 111111 11111111111111 11111111 3448111 01115/2007 11:38A Weld County, CO I of 1 R 6.00 Q 0.00 Steve Moreno Clerk & Recorder STATEMENT OF AUTHORITY I. This Statement of Authority relates to an entity' named Boulder rack ntatal tdi LA*bllity Co., a Colorado Limited Liability and is executed on behalf of the entity purstat to the provisions of Section 3 &30-172, C.R.S. 2. The type of entity is a: t� trust GI nonprofit corporation tlimited liability company general al partnership 0 limited partnership O C� registered limited liability partnership O registered limited liability limited partnership limited partnership association government or governmental subdivision or agency C! corporation 3. The entity is formed under the laws of CO O 'A jV59 -I 4, The mailing address for the entity is creek HollooW Road 1 5. The 9 name IZI position of each person authorized to execute instruments conveying, encumbering, or otherwise affecting title to real property on behalf of the entity is Thomas L Garvin, Manager 6.2 The authority of the foregoing person (s) to bind the entity iaD not limited 13 limited as follows: Other matters concerning the manner in which the entity deals with inter in real property: Executed this STATE OF COLORADO COUNTY OF __Caajaj,(2.2se--- Soo7 }sus: 1. . Moulder Creek A Colorado Limit Wiest omits L Canis nager L Liability Co., bill► Company w T'he foregoing instrument was acknowledged before me th' day of Januart 2007 bby Thomas _L Garvin., Mangy" of Boulder Creek ' td. Yro ma Witless my hand and official gal.. My commission expires: 'This form should aot be used unless the entity is capable of holding title to real property. Mee absence of any lirniwien shall bo prima facie evicleac a that no such limitation emits. 'The statement of authority must be recorded to obtain the benefitsofthe sue. CHANGE OF ZONE/REZONING QUESTIONNAIRE: 1. How is the proposed rezoning consistent with the policies of the Weld County Code, Chapter 22? If the proposed rezoning is not consistent with the Comprehensive Plan, explain how the proposed rezoning will correct what the applicant perceives as faulty zoning, or how the proposed rezoning will fit with what the applicant perceives as the changing conditions in the area. 2. How will the uses allowed by the proposed rezoning be compatible with the surrounding land uses? Include a description of existing land uses for all properties adjacent to the subject property. a Will the property use a septic system or public sewerfacilities? RESPONSE: Public sewer facilities - Saint Vrain Sanitation District (See enclosed commitment letter) 4 Who will provide adequate water, including fire protection, to the property? RESPONSE: Left Hand Water District (See enclosed commitment letter) 5. Does the property have soils with moderate or severe limitations for construction? If yes, the applicant shall submit information which demonstrates that the limitations can be overcome. RESPONSE: No (See enclosed soils report) 6. Is the road and/or highway facility providing access to the property(ies) adequate to meet the requirements of the proposed zone district? If not, the applicant shall supply information demonstrating the willingness and financial capability to upgrade the road and highwayfacilities. RESPONSE: Yes (See enclosed traffic study) 7 Is the change of zone area located in a Flood Hazard Overlay District? RESPONSE: No 8. Is the change of zone area located in a Geologic Hazard Overlay District? RESPONSE: No 9. Is the change of zone area located in the AP (Airport) Overlay District? RESPONSE: No Notice of Inquiry Development within an Intergovernmental Agreement Urban Growth Boundary Pre -application Case # f 'REIS-C)309 Date of Inquiry 11/8/2018 Municipality with CPA or IGA Firestone Name of Person Inquiring Tony Ollila Property Owner Boulder Creek Estates LTD Planner Chris Gathman Planner Phone Number 970-400-3537 Planner Email Address cgathman@weidgov.com Legal Description Lot B Recorded Exemption RE -3232: Part NW4 Section 9, TZN, R68W Parcel Number 131309200005 Nearest Intersection County Road 5 and Vista View Drive Type of Inquiry PUD Change of Zone for a proposed Mini Storage Facility The above met with County Planning developing land inside de�i�r�atedg person Intergovernmental A r staff eement��aordin��ed about l Planning a parcel Agreement of Boundary. youi lr accordance with the !GA, found in Chapter 19 of the eld County Code, the applicant has been notified of the IGA and the county will not accept an application for development sooner than 21 days from the date they contact you unless this signed form is returned with the box checked below indicating you do not wish to pursue annexation at this time. You are asked to sign below to acknowledge that the applicant has contacted you. Date of Contact with Municipality: 11/ I/ Li. /72 U We are not interested in pursuing annexation with this applicant at this time. We request 21 days from the date of contact to pursue annexation with this applicant. S nature f I unicipaliily Representative Title Weld County Planning Department 1555 N 17"' Ave, Greeley, CO 80631 aw (970) 400-6100 -- (970) 304-6498 Fax Date Notice of Inquiry Weld County Pre -application Case it PRE18-0309 , 1 Date of Inquiry 11/8/2018 Municipality Longmont Name of Person Inquiring Tony O11ila Property Owner Boulder Creek Estates LTD Planner Chris Gathrnan Planner Phone Number 970-400-3537 Planner Email Address cgathma n@weldgov.com Legal Description Lot B RE -3232; part of the NW4 of T2N{ R68W Section 9, Parcel Number 131309200005 Nearest Intersection County Road 5 and Vista View Drive Type f InquiryPIJD Coordinated application Planning for Mini Storage reement Facility bourn in :1m Longmont/Weld County The above person met with County Planning staff about developing a parcel of land inside your designated Interga 1ernmentaI gr entiCoardinated Planning Agreement Boundary. County Planner's signature Would you like to pursue annexation of this property? NO X YES Date of Contact November 14, 2108 Comments: £eeattached. (h./MA c3S(A- Signature of Municipality Representative Title Date Principal Planner 11/14/18 Please sign and date to acknowledge that the applicant has contacted you and return this signed form to Weld County Department of Planning Services. Weld. County Planning Department 1655 N 17th Ave, Greeley, CO 80631 ' (910) 400e#6100 (970) 3045-6498 Fax 20181107 PLANNING & DEVELOPMENT SERVICES DEPARTMENT Development Services Center / Longmont, Co 80501 (303) 651-8330 / Fax # (303) 651-8696 E-mail: Ior� r o, t. tannin ]onq ontcofor-odo.gov Web site: www..l o ngrn o ntco l o ra d o .gov November 14, 2018 Chris Gathman Weld County Planning Dept. 1555 N 17th Ave Greeley/ CI 80631 Aaron Thompson 4032 Defoe St, Strasburg, CO 80136 RE: Notice of Inquiry for PRE18-0309, PUD application for mini storage facility Dear Chris and Aaron, Thank you for sending the notice of inquiry for the PUD application for mini storage facility located at County Road 5 and Vista View Dr., within the Coordinated Planning Area (CPA) of Longmont and Weld County. The City understands that this application went through sketch plan review last year. Based on the materials, it looks like the applicant proposes to construct several buildings on the parcel for mini warehouse and self -storage. While this property is within the CPA and adjacent to the City of Longmont's current municipal boundary, it is not within our Longmont Planning Area (LPA), Consequently, the City would not be interested in pursuing annexation at this time. We will likely provide detailed comments on future applications. As you know, the City owns a trail easement on the north end of this property. The development of this property has significant impacts to Longmont with respect to the alignment of the St. Vrain Greenway and the future planned connection to St, Vrain State Park; we can provide maps showing the overall vision for this regional system, if you'd like. As this is such an important trail connection for this regional trail we would suggest that a meeting to discuss alternatives be held with the property owner, the City, and the County. We are happy to coordinate this conversation. Thank you for the opportunity to comment on this referral. Should you have any questions, please contact me at (303) 651-8336 or erin.fosd ck@longmontcolorado. ov. Sincerely, Erin Fosdick Principal Planner CC: Public Works and Natural Resources staff (Dan Wolford, Steve Ransweiler, ler, David Bell) Tony Ollia Brad Schol Planned Unit Development (PUD) Development Guide Longmont Self Storage Weld County, Colorado PREPARED FOR: Grow Your Storage, Lit 1705 Feagin Drive Lufkin, TX 75904 Phone: 970-420-1521 Contact: Tony Ollila tony@growyourstorage.com PREPARED BY: Aperlo Property Consultants, llc 4032 Defoe Street Strasburg, CO 80136 Phone (303) 317-3000 Contact: Aaron Thompson Aaronaperiopc.com November 30, 2018 Table of Contents A. Environmental Impacts B. 000•0 4,........ S Service Provision Impacts 440■00101100 4 000000 40004 I 4•000 01000 * 00000000000 44444 00001010001000004 4•000 00 5 2 2 2 0 0 0 2 2 2 4 0 4•000 4 1 0 1 4 4 4 4 2 0 4 0 4 2 2 C. Landscaping Elements 4 D. Site Des 4 00 0 0 00004 4 410 2 0 4 4 40 4 0 00 44 0 0 0 0 4 4 1 2 0 0 4 4 1 0 0 0 0 4 00 0 4 4 4 0004.4000.0.0000 4 4. 04 4 4 2 2 0 0 4 4 0 2 2 4 4 4 0 2 00000 04 4 1 0 2 0 1 1 1 2 2 2 1 1 1 0 0 0 0 4 0. 0 4 0 4000,0 4 1 0 0 E. Common Open Space Usage204401111404020.440204.40004442220400.44402E 444001111002111204442204.42 111100011100000000.0.00 00 4 0000000 F. Proposed Signage.1. G. RUA Impacts ..0000 0 Ho Intergovernmental Agreement Impacts 5 4 V IV 11•I I VII A. Environmental Impacts 1. Noise and Vibration Beyond construction, noise and vibration impacts will be negligible or non-existent. 2. Smoke, Dust and Odors Aside of construction activities, no smoke dust or odor impacts will exist with the Project. Heat, Light and Glare N o heat or glare impacts will be realized. Light impacts will be extremely minimal as site lighting will largely consist of building mounted lighting. 4. Visual/Aesthetic Impacts Appropriate architectural and landscaping detail will enhance the visual impact of the Project. Impacts will be minimal due to Boulder Creek to the south and east, industrial uses to the west, and vacant Ag land to the north. Additionally, the setback from Highway 119 is substantial and so will minimize visual impact to passing traffic. 5. Electrical Interference N o improvements or operations on the site will create electrical interference issues. 6. Water Pollution N o improvements or operations on the site will create water pollution issues. An onsite water quality facility is part of the Project to comply with stormwater quality regulations. 7. Wastewater Disposal Wastewater disposal will be limited to the sanitary sewer service required for the office/residence and will be serviced by St. vrain Sanitation District. 8. Wetland Removal No wetlands are present on the site nor impacted by the Project. 9. Erosion and Sedimentation Erosion and Sedimentation Control plans will be prepared for construction activities and permanent stabilization to comply with local, state and federal regulations. A permanent onsite water quality facility is part of the Project to comply with stormwater quality regulations. Required permits for grading and erosion/sediment control will be obtained. 10. Excavating, Filling and Grading Earthwork activities will be according to approved plans for the site development and will be employed in conjunction with the required permits for Erosion and Sediment Control as discussed above. 11. Drilling, Ditching and Dredging N o drilling, ditching or dredging activities are proposed with this Project. 12. Air Pollution N o air pollution impacts will be realized beyond construction activities, which will be contained in accordance with local, state and federal laws for air pollution (ADEN) permit control during construction. 13. Solid Waste Solid waste will be limited to domestic trash which will be handled via onsite dumpsters and serviced by a local waste management company. 14. Wildlife Removal N o wildlife appears to be present onsite. 15. Natural Vegetation Removal N o substantial natural vegetation will be removed with this Project. Ground clearing of native grasses and weeds will be required. 16. Radiation/Radioactive Material N o radiation/radioactive materials are a part of this Project. 17. Drinking Water Source Drinking water will be provided via a domestic water service from Left Hand Water District 18. Traffic Impacts Self -storage projects are a very low -impact traffic generating land use. A Traffic Letter has been prepared and submitted with this PUD application. B. Service Provision Impacts 1. Schools As an industrial Project, no school impacts are realized with the development. . Law Enforcement Law enforcement requirements for self -storage projects are very minimal. The property is served by the Weld County Sheriff's Department, the nearest office for which is very near the site in the vicinity of 1-25 and WCR 24. 3. Fire Protection Adequate access, water main extensions and fire hydrants are proposed with the Project to serve the need for fire protection. Proper access into buildings will be designed as part of the building permit applications for each applicable building as emergency/fire access may be required. Mountain View FDP Station No. 1 is directly west of the project which allows for immediate response times. 4. Ambulance Mountain View FDP Station No. 1 is directly west of the project which allows for immediate response times for medical emergencies onsite. S# Transportation No roads are proposed with this Project. 6. Traffic Impact Analysis A Traffic Letter has been prepared with this P U D application. 7. Storm Drainage A Phase II Drainage Report has been prepared with this PUD application for analysis of the onsite flows, detention/water quality requirements and discharge impacts. 8. Utility Provisions All utilities exist within the vicinity of the Project, including telecom, electrical, gas, water and sanitary sewer. 9. Water Provisions A Will -Serve Letter from Left Hand Water District is included with this PUD application. 10. Sewage Disposal Provisions A Will -Serve Letter from St. Vrain Sanitation District is included with this PUD application. 11. Structural Road Improvements Plan No roadways are proposed with this Project. C. Landscaping Elements 1. A landscape plan has been prepared in conjunction with this PUD application. A variety of plantings and ground cover treatments have been applied to the site to buffer, enhance and visually soften the proposed development to public view. The tremendous amount of topography adds interest to the landscape plan and finished terrain. Maintenance and management of landscaping installations will consist of regular mowing, weed treatments, pruning/trimming and watering via a designed irrigation system. Landscaping materials will be including in the Improvements Agreement for the Project. Irrigation will be provided via tap from Left Hand Water District. D. Site Design 1. The Project site is topographically fairly steep, which allows for varied height buildings which creates visual interest and opportunity for more efficient site utilization through the employment of some 2 -story structures within the Project. The Project is consistent with the Comprehensive Plan and the goals and policies of Industrial Development as existing facilities are adequate, impact is low, and compatibility with the surrounding uses is high. The project use is the only use proposed within the PUD zone district, and hence compatibility with other uses in the PUD zone district is not applicable. The PUD rezoning will be compatible as an I -1/C-3 property with the surrounding industrial and commercial uses to the west, the vacant Ag land to the north, and Boulder Creek to the east. A cell tower site exists at the southern portion of the property, which will remain in place and is a compatible use with the self -storage proposal. 4. No conflicts are anticipated with surrounding land uses, due to the compatible nature of the self -storage use with the area and the low -impact nature of the self -storage use. 5. The site is not located with a Flood Hazard, Geological Hazard or Airport Overlay District. E. Common Open Space Usage No common open space is a part of nor affected by this Project. F. Proposed Signage Proposed signage will consist of building mounted signage and required site signage such as stop signs, fire lane signs and accessible parking signs. G. RUA Impacts Again, due to the low -intensity of a self -storage development, RUA impacts will be minimized through application of the PUD development standards. FI. Intergovernmental Agreement Impacts As a single use, low -impact Project with utilities and services available in the vicinity, no IGA impacts are anticipated by the development. Responses to the sketch plan phase from Longmont and Firestone were of "no comment". Responses to the Notice of Inquiry► Forms from Longmont, Firestone and Mead were of no interest in annexation of the property. PRELIMINARY DRAINAGE REPORT LONGMONT NT SELF STORAGE Weld County, CO PREPARED FOR OWNER/DEVELOPER: GROW YOUR STORAGE, LLC 1705 Feagin Drive Lufkin, TX 75904 Phone: 970-420-1521 Contact: Tony OI l ila tony@groyourstorage.com PREPARED BY: KELLY DEVELOPMENT SERVICES, LLC 9301 Scrub Oak Drive Lone Tree, Colorado 80124 Phone: 303-888-6338 Contact: Greg Kelly, PE Email: gregkellydev.com April 26, 2018 ENGINEER'S CERTIFICATION I hereby certify that this report for the preliminary drainage design of the SecureCare Storage project was prepared by me or under my direct supervision in accordance with the provisions of the Weld County storm drainage criteria for the owners thereof. Greg S. Kelly Registered Professional Engineer State of Colorado No. 15813 2 Date PRELIMINARY DRAINAGE REPORT LONGMONT SELF STORAGE I. GENERAL LOCATION AND DESCRIPTION A. Location 1. Northwest /4, Section 8, Township 2 North, Range 68 West' 2. East of intersection of County Road 5 and Vista View Drive, south of intersection of County Road 5 and State Highway 119. 3. The confluence of St. Vrain Creek and Boulder Creek is immediately east of the site. 4. The site is surrounded on three sides by City of Longmont. The development to the west consists of the City of Longmont Police Department firing range and the Mountain View Fire Protection District fire station. B. Description of Property 1. Site area is 6.624 acres. 2. The site is covered with a few trees, bushes, native grasses and weeds. Per the NCRS Soils Report (copy in report appendix), the site is comprised of Ascalon Loam (Hydrologic Soil Type B), Bankard sandy loam (Hydrologic Soil Type A) and Cascajo gravelly sandy loam (Hydrologic Soil Type A). 3. The major open channels are St. Vrain Creek and Boulder Creek located on City of Longmont property. 4. The proposed development will be a self -storage facility with an office/manager's residence, 9 self -storage buildings totaling 87,900 square feet and access drives with parking/loading areas and landscaping. There is an existing cell phone tower and building on the far southern corner of the site. 5. There are no known irrigation facilities within 200 feet of the site. 6. Groundwater was not encountered in any of the twelve boring holes drilled by H -P Kumar in March of 2017. II. DRAINAGE BASINS AND SUB -BASINS A. Major Basin Description 1. There are no known Weld County Master Drainage Plans covering these two drainageways nageways adjacent to the site. 2. These major drainage basins encompass very large acreages running into the mountains. As such, they are subject to high spring runoff flows and flooding during heavy rainfall events. 3. The site is not with a FEMA 100 -year floodplain as shown on Flood Insurance Rate Map Number 08123C1870E included in the appendix of this report. The limits of a special flood hazard area for the City of Longmont shown for planning purposes borders the east side of the site. B. Sub -Basin Description 1. Historically, the drainage patterns on -site are generally from southwest to northeast then down a steep slope to St Vra in Creek. 2. The off -site runoff that could have flowed onto the site have been intercepted by the roadside swales of County Road 5, flowing northerly and around the property. 1 III. DRAINAGE FACILITY DESIGN A. General Proposed Concept 1. Runoff will surface flow from the building roofs and access drives pavement to two low points adjacent to a proposed detention/water quality pond in the northeast corner of the site. At these low points, inlets will capture the flow and it will be conveyed in storm sewer pipes the short distance to the pond. The proposed detention/water quality pond will be designed as an Extended Detention Basin with forebay, low flow channels and outlet structure. Because of the significant fall across the site, it is proposed to have a retaining wall along two sides of the pond. 2. As noted above, there is no off -site runoff entering the site. 3. The proposed drainage patterns will be from southwest to northeast, generally the same as historic. 4. No variances from Weld County Storm Drainage Criteria are anticipated to be requested. Specific Detail 1. Table 5-1 'Feld County Design Storm Rainfall for Longmont was used for the 1 -hour design flow storm depth. These depths are: 2 -year: 1.02 inches 5 -year: 1.46 inches 10 -year: 1.75 inches 100 -year: 2.72 inches 2. Site grading has created 6 sub -basins on the property. These sub -basins are: a. Sub -basin A is most of the southern one-half of the site. Runoff will surface flow to 3 — 5 -foot Type R inlets at Design Point 1. Runoff will then be conveyed to the detention/water quality pond in an 18" storm sewer. b. Sub -basin B is most of the northern one-half of the site. Runoff will surface flow to 2 — 5 -foot Type R inlets at Design Point 2. Runoff will then be conveyed to the detention/water quality pond in an 18" storm sewer. c. Sub -basin C consist of the detention/water quality pond. Runoff combines with the runoff from Sub -basins A and B and flows to the outlet structure at Design Point 3. d. Sub -basin D is along the west side od the site adjacent to County Road 5. Runoff will flow in the roadside ditch to Design Point 4.. e. Sub -basin E is the cell tower site. It will continue to sheet flow off -site and into St. Vra in Creek. 1. Sub -basin F is around the east and north perimeter of the site. Runoff will sheet flow off -site to St Vrain Creek. 2 A summary of the Sub -basin's runoff is as follows: SUB -BASIN RUNOFF SUMMARY TABLE Sub -basin Designation Design Point Sub -basin Area (ac) Percent Impervious Q1° Q1°° Tc min Qia (cfs) Qum (cfs) I A 1 2.58 95% 0.83 0.87 5.0 r 12.66 20.67 B 2 1.92 I- 94% 0.82 0.86 5.8 8.97 - 14.69 C 3 0.49 I 20% 0.30 0.56 7.8 0.75 2.22 D 4 0.57 1 62% 0.59 0.74 5.0 2.01 %3.87 E • 0.18 2% 0.17 0.49 -, 5.0 0.18 %0.81 F 0.88 2% 0.17 0.49 5.0 0.26 3.98 A summary of the Design Point's flows is as follows: DESIGN POINT RUNOFF SUMMARY TABLE Design � Point Contributing Sub -basins Contributing Area (acres) Tc (min) Q10 (cis) a Q100 (cfs) 1 A 2.58 5.0 12.66 20.67 2 B 1.92 5.8 8.97 14.69 3 C 0.49 7.8 19.97 33.65 4 D 0.57 5.0 2.01 3.87 3. Runoff from Sub -basins A, B, C and D will flow to an Extended Detention Basin facility for flood storage and water quality. The basin will contain a WQCV of 014 acre feet or 6,100 cubic feet. The 10 -year volume will be 0.64 acre feet or 28,100 cubic feet. The 100 -year detention volume will be 1.18 acre feet or 51,400 cubic feet. Discharge from the pond will be controlled by an outlet structure with the WOG/ and 10 -year runoff being controlled by a flow control plate, and the 100 -year discharge being controlled by an orifice plate. The discharge, per county regulations, will be no greater than the 5=year historic flow. The flow is calculated at 1.2 cfs. 4. The main drainage problem encountered on site is created by the excessive fall across the site. The problem created the need to contain the detention/water quality pond within a retaining wall along the east and north sides of the pond. 5. Maintenance access will be provided to the bottom of the detention/water quality pond via a gravel path. Maintenance aspects are as follows: Table EDB-1 Typical Inspection & Maintenance Requirements Matrix EDB Features Sediment Removal Mowing/ control Weed Trash & Debris Removal Erosion Overgrown Vegetation Removal Standing Water (mosquito/ algae control) Structure Repair Inflow Points Inu.ffzilIc'r X X X Forebay X X X Low -flow channel X X X X X Bottom Stage Micropool X X X X X Outlet Works X X X Emergency Spillway X X X X Upper Stage X X Embankment The preliminary drainage design for the SecureCare Storage site is in conformance to acceptable engineering standards, practices and criteria established by the Weld County Engineering and Construction Criteria manual dated April 2012. No adverse impacts to downstream facilities and/or adjacent properties are expected as a result of the development of the site. APPENDICES 1. Hydrologic Computation a. Land use assumptions, composite "C" and % Impervious calculations b. Initial and major storm runoff computations for developed runoff conditions 2. Hydraulic Computations a. Extended Detention Basin Calculations b. Inlet Capacity Calculations c. Storm Sewer Pipe Flow Calculations 3. Referenced Information a. FEMA Firmette b. N CRS Soil Report 4 APPENDIX1 HYDROLOGIC OMPUTATION COMPOSITE 'C' FACTORS (DEVELOPED) LOCATION: Securecare Storage Weld County Soil Type: C/D Preliminary Drainage Report BY: GSK DATE: 4/25/2018 SUB -BASIN Acreage PAVEMENT ROOFS LAWNS COMPOSITE C FACTOR PERCENT IMPERVIOUS DESIGNATION PAVED ROOFS LAWNS TOTAL 2YR 5 YR 10 YR 100 YR 2YR 5 YR 10 YR 100 YR 2YR 5 YR 10 YR 100 YR 2YR 5 YR 10 YR 100 YR Imperviousness (%) = 100 90 2 A 1.18 140 0.00 2.58 0.83 0.85 0.87 0.89 0.74 0.77 0.79 0.85 0.01 0.05 0.17 0.49 0.78 0.81 0.83 0.87 94.6% B 0.87 1.03 0.02 1.92 0.83 0.85 0.87 0.89 0.74 0.77 0.79 0.85 0.01 0.05 0.17 0.49 077 0.80 0.82 0.86 93.6% C 0.00 0,10 0.39 0.49 0.83 0.85 0.87 0.89 0.74 0.77 0.79 0.85 0.01 0,05 0.17 0.49 0.16 0.20 0.30 0.56 20.0% D 0.00 0.39 0.18 0.57 0.83 0.85 0.87 0.89 0.74 0.77 0.79 0.85 0.01 0.05 0.17 0.49 0.51 0.54 0.59 0.74 62.2% E 0.00 0.00 0.18 0.18 0.83 0.85 0.87 0.89 0.74 0.77 0.79 0.85 0.01 0.05 0.17 049 0.01 0.05 0.17 0.49 2.0% F 0.00 0.00 0.88 0.88 0.83 0.85 0.87 0.89 0.74 0.77 0.79 0.85 0.01 0.05 0.17 0.49 0.01 0.05 0.17 0.49 2.0% Overall Site 2.05 2.92 1.65 6.62 0.83 0.85 0.87 0.89 0.74 0.77 0.79 0.85 0.01 0.05 0.17 0.49 0.59 0.62 0.66 0.77 71.2% Historic 0.00 0.00 6.62 6.62 0.83 0.85 0.87 0.89 0.74 0.77 0.79 0.85 0.01 0.05 0.17 049 0.01 0.05 0.17 0.49 2.0% 4/25/2018 Securecare Storage Preliminary Drainage Report TIME OF CONCENTRATION (STANDARD FORM SF -2) REMARKS LOCATION: Securecare Storage Preliminary Drainage Report BY: GSK DATE: 4/25/2018 FORMULAS: * Ti = 0.395 (1.1-05)LA0.5/5/100A1/3 *x n V=C5/ (S1100) 0.5 SUB -BASIN DATA INIT./OVERLAND TIME (Ti) TRAVEL TIME (Tt) TOTAL Tc Check (Urbanized Basins) FINAL Tc DESIGNATION CS AREA AC (AC) LENGTH (FT) SLOPE °�'o Ti Min. x ( ) GRASS+ PAVED LENGTH. (FT) SLOPE % VEL (FPS)** (FPS) Tt (Min.) Ti+Tt (Min.) LGTH. (FT) Tc = (Li18O) + 10 (minutes) A 0.81 2.58 0 1.00 0.00 PAVED 588 2.30 3.03 3.23 3.2 588 13.3 5.0 Design Point 1 B 0.80 1.92 30 1.87 2.46 PAVED 402 1.00 2.00 , 3.35 5.8 432 12.4 5.8 Design Point 2 C 0.20 0.49 30 4.17 5.63 GRASS 210 5.24 1.60 2.18 7.8 240 11.3 7.8 Design Point 3 0 0.54 0.57 0 1.00 0.00 PAVED 768 2.08 2.88 4.44 4.4 768 14.3 5.0 Design Point 4 E 0.05 0.18 0 20.00 0.00 GRASS 130 8.33 2.02 1.07 1.1 130 10.7 5.0 Design Point 5 F 0.05 0.88 25 16.00 3.82 GRASS 100 8.00 1.98 0.84 4.7 125 10.7 5.0 Historic 0.05 6.62 100 6.40 10.37 GRASS 400 6.40 1.77 3.76 14.1 500 12.8 12.8 4/25/2018 Securecare Storage Preliminary Drainage Report Standard Form SF - 3 Storm Drainage System Design (Rational Method Procedure) Subdivision Designer Date Design Storm Securecare Storage GSK 4/25/2018 5 -YR HISTORIC 1= 28.5*P1 (10+ -T -c ri e' Where: P1 1.46 I Direct Runoff Total Runoff Design Poi Subbasin Designatio natio n CO 22 < < X 0 a < X 0 O Comment ffeci - - ac. min. ac. inlhr cfs min. ac. inlhr cfs (1) I (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) I „ I Historic Historic 6.62 0.05 12.8 0.33 3.57 1.2 , 4/25/2018 Securecare Storage Preliminary Drainage Report Standard Form SF - 3 Storm Drainage System Design (Rational Method Procedure) Subdivision Designer Date Design Storm Securecare Storage GSK 4/25/2018 10 -YR DEVELOPED 28.5*Pi (10+Tc)°.786 Where: P1= 1.75 Direct Runoff Total Runoff C .O a.., as c co C 0 �0 < < Design m, GO 0 I 1:11 O 0 0 Comment ac. min. ac. in/hr cfs min. ac. inlhr cfs (1) I (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) 1 A 2.58 0.83 5.0 2.13 5.94 12.7 12.7 Flow to Inlet 2 B 1.92 0.82 5.8 1.57 5.70 9.0 9.0 Flow to Inlet 3 C 0.49 0.30 7.8 0.15 5.18 0.8 7.8 3.85 5.18 20.0 Flow to Pond Outlet Structure 4 D 0.57 0.59 5.0 0.34 5.94 2.01 2.01 Flow in road swale E 0.18 0.17 5.0 0.03 5.94 0.18 0.18 Flow offsite from cell tower site F 0.88 0.05 5.0 0.04 5.94 0.26 0.26 Flow offsite from site perimeter 4/25/2018 Securecare Storage Preliminary Drainage Report Standard Form SF - 3 Storm Drainage System Design (Rational Method Procedure) Subdivision Designer Date Design Storm Securecare Storage GSK 4/25/2018 100-YR DEVELOPED I= 23.5*P1 (10+TO)0.786 Where: P1 _ 2/2 Design Point Direct Runoff Total Runoff c o a:, • s , c .w <t Runoff leffecient }, O — O 43 x O - O comment s0 a ac. min. ac. inlhr cfs min. ac. inlhr cfs (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) 1 A 2.58 0.87 5.0 2.24 9.23 20.7 20.7 Flow to Inlet 2 B 1.92 0.86 5.8 1.66 8.85 141 14.7 Flow to Inlet 3 C 0.49 0.56 7.8 0.28 8.06 2.2 7.8 4.18 8.06 33.6 Flow to Pond Outlet Structure r 4 D 0.57 0.74 5.0 0.42 9.23 3.87 3.87 Flow in road swale E 0.18 0.49 5.0 0.09 9.23 0.81 0.81 Flow offsite from cell tower site F 0.88 0.49 5.0 0.43 9.23 3.98 II3.98 Flow offsite from site perimeter I. a. 4/25/2018 Securecare Storage Preliminary Drainage Report SUB -BASIN RUNOFF SUMMARY TABLE Sub -basin Design Point Sub -basin Area (ac) Percent Impervious 10 CDesignation 100 Te (min) O10 (cfs) awo (cfs) „ A 1 2.58 95% 0.83 0.87 5.0 12.66 20.67 B 2 1.92 94% 0.82 0.86 5.8 a 8.97 14.69 C 3 0.49 , a 20% . 0.30 0.56 . 7.8 0.75 2.22 D 4 0.57 62% . 0.59 0.74 5.0 2.01 3.87 E 0.18 2% 0.17 0.49 5.0 0.18 0.81 F 0.88 2% 0.17 0.49 5.0 0.26 3.98 4125/2018 Securecare Storage Preliminary Drainage Report DESIGN POINT RUNOFF SUMMARY TABLE i Design Point Contributing Sub -basins Contributing Areabao (acres) Tc (rein) �a (cfs) t' (cfs) 1 A 2.58 5.0 12.66 20.67 2 B 1.92 5.8 8.97 14.69 3 C 0.49 7.8 19.97 33.65 4 . D 0.57 5.0 2.01 3.87 4125/2018 Securecare Storage Preliminary Drainage Report APPENDIX 2 HYDRAULIC COMPUTATIONS 8 i _ DETENTION BASIN STAGE -STORAGE TABLE BUILDER kv�+t wi.:T, s t ru fliiVA•a,i 1u:. UD-Detention. Version 3.07 (February 2017) Project: Se cure Ca re Storage Basin ID: Overall Site re h POOL 'JAR- cc9 -rl r{Jr0■rl JII4CS Example Zone Configuration {Retention Pond} Required Volume Calculation Selected OM' Type = Watershed Area = Watershed Length= Watershed Slope = Watershed Imperviousness = Percentage Hydrologic Sol Group A. _ Percentage Hydrologic Sol Group B _ Percentage Hydrologic Scl Groups CID = Desired WOCV Drain Time = EDB 6.62 720 0.04 7 7' 20'4 '00.0 0.0% 40.0 Location for 1 -hr Rainfall Depths = User Input Water Dually Capture Voile (WOCV) _ Excess thban Runoff Volume (ELJRV) _ 2 yt Runoff Volume (P1 = 1.02 in.} _ 5-yr Runoff Volume (P1 = 1.46 in.! = 10yr Runoff Volume (P1 = 1.75 in.'. = 25-ytRunoff Volume (P1 =2.07 in.)= 50-yr Runoff Volume (P1 =2.42 in.}= 100-yr Runoff Volume (P1 =2.72 in.)= 500-yr Runoff Volume (P1 = 0 in-) = Approximate 2-yr Detention Volume = Approximate 5-yr Detention Volume = Approximate 10-yr Detention Volume = Approximate 25-yr Detention Volume = Approximate 50-yr Detention Volume = Approximate 100-yyr Detentbn Volume = Stage -Storage Calculation Zone 1 Volume (WC -ACV) = Zone 2 Volume (10 -year - Zone 1) _ Zone 3 Volume (100 -year - Zones 1 & 2) _ Total Detention Basin Volume = Initial Surcharge Volume (ISV) _ Initial Surcharge Depth (ISD) Total Avaiable Detention Depth (Hoa1) = Depth of Trickle Channel (Hrr } = Slope of Trickle Channel (S,ro} _ Slopes of Man Basin Sides (Sl,n;n) = Basin Length -to -Width Ratio (R11 filial Surcharge Area (Am/ = Surcharge Volume Length (La,;) _ Surcharge Volume Width (W s) _ Depth of Basin Flora (HFLnr") = Length of Basin Floor = Width of Basin Floor (W more) = Area of Basin Floor (Arrnre) _ Volume of Basin Floor C. ncoe) _ Depth of whin Basin +,H? ein) = Length of kin Basin (L1Wa1ry) _ Width of Man Basin (W,a.1Yal = Area of Main Basin (Aj.1Yal = Volume of Main Basin (V1o,,,) = Calculated Total Basin Volume (V,041) = 0.155 0.558 0.371 0.559 0.726 0.944 1-129 1.328 0.000 0.348 0.525 0.680 0.756 0.817 0.876 0.155 2 0.196 0.876 Use iser user user iser iser user user user Jser user user user user erce~•. erce"•. Deice-" :Sorter.: yours acre -tee: acre -tee: acre-feet acre-feet acre-feet acre -feel acre-feet acre-feet acre-feet acre-feet acre -lee: acre -tee acre -lee•. acre-feet acre -tee acre-feet acre -fee acre -tee° acre -lee: :,.3 •J. H:\ ,42 4 Optional User O1lerrice I - • Precipitation 1.02 1.46 1.75 2.07 2.42 2.77 inches inches c: es inches inches inches inches Depth Increment = Stage - Storage Description Stage IL 1, Top of M cropoo 480 4391 4892 4893- 4394 4395 8 Optional Override Stage {+!) Length (t) 0.00 1.1 .5 .00 $ 00 Width Area O. .'''.re _ 0 4.81 8.941 •9.957 1 082 12.312 13.656 Area (acre) 0.000 0.110 Volume (a3) Mt 2.357 0.054 0105 0.229 0.254 0.283 9.192 0211 '8.730 0.430 29,250 0.671 40.947 0.940 53.93' W-Delention_Y3.07 SCS.xism. Basin 42512018,3:13 PM DETENTION BASIN STAGE -STORAGE TABLE BUILDER UD•Detention, Version 3.07 (February 2017) 2U 15 5 150 3.00 Stage (f Length ft) WA'idth(f) Area (sq.*kJ 4.50 U.321 0240 0DE!) U.CLLU 1).UU IUU 6:1313 1,50 3.00 Stage (It.) —Area(acres)Volume (ac -ft) 4.50 3UU s 2UU 11)13 U 1.240 UJ_1l1 - U.31U U:ULU 6.00 UD-Detenhian_v3.07 SCS.xlsm. Basin 412512018,3.13 PM Detention Basin Outlet Structure Design UD-Detention, Version 3.07 (February 2017) Project: Secure Care Storage Basin ID: Overall Site 00411 vvcuME euraVT WG PERMANEk1T PODL -ZONE 3 2DME 2 f ;-2QR1E 1 20NE 1 AND 2'` nnlrir rs --10O-YEAH LAM -ILL ICL Example Zone Configuration (Retention Pond) User Input: Orifice at Underdrain Outlet (typically used to drain WQCV in a Filtration BMP) Underdrain Orifice Invert Depth = Underdrain Orifice Diameter= N/A N/A Zone 1 (WQCV) Zone 2 (10 -year) tone 3 (100 -year) Stage (ft) Zone Volume (ac -ft) Outlet Type 1.70 0.155 Orifice Plate 4.04 0.525 Circular Orifice 4.78 0.196 Weir&Pipe (Circular) ft (distance below the filtration media surface) inches 0.876 Total Calculated Parameters for Underdrain Underdrain Orifice Area = N/A ft2 Underdrain Orifice Centroid = N/A feet User Input: Orifice Plate with one or more orifices or Invert of Lowest Orifice = Depth at top of Zone using Orifice Plate = Orifice Plate: Orifice Vertical Spacing = Orifice Plate: Orifice Area per Row = Elliptical Slot Weir (typically used to drain WQCV andforEURV in a sedimentation BMP) ft {relative to basin bottom at Stage = 0 ft) ft {relative to basin bottom at Stage =0 ft) inches sq. inches (d iameter = 1-1/8 i nches) 0.00 2.06 8,20 0.98 User Input: Stage and Total Area of Each Orifice Row (numbered from lowest to highest) Stage of Orifice Centroid (ft) Orifice Area (sq. inches) Stage of Orifice Centroid (ft) Orifice Area (sq. inches) Calculated ParametersforPlate WQ Orifice Area per Row= ft2 Elliptical Half -Width Elliptical SlotCentroid = Elliptical Slot Area= 6.806E-03 N/A N/A N/A feet feet ft` Row 1 (required) Row 2 (optional) Row 3 (optional) Row 4 (optiona ) Row 5 ((apt0na:: Row 6 (optional) Row 7 (optional) Row 8 (optional) 0:00 0.69 1.37 0.9B 0.98 0.98 Rcoov 9 (optional) Raw '0 (optional; Row 1' (optional Row 12 (optional Row 13 (optional: Row 11 (optonal) Row 15 (optional) Row '13 (optional! User Input: Vertical Orifice (Circular or Rectangular) Invert of Vertical Orifice = Depth at top of Zone using Vertical Orifice = Vertical Orifice Diameter= Zone 2 Circular Not Selected 1.70 N/A 4.04 N/A 4.00 N/A ft {relative to basin bottom at Stage = oft) ft {relative to basin bottom at Stage = 0 ft) inches Calculated Parameters for Vertical Orifice Vertical Orifice Area = Vertical Orifice Centroid = Zone 2 Circular Not Selected 0.09 N/A 0.17 N/A ft` feet User Input: Overflow Weir (Dropbox) and Grate (Flat or Sloped) Overflow Weir Front Edge Height, Ho = Overflow Weir Front Edge Length = Overflow Weir Slope = Horiz. Length of Weir Sides = Overflow Grate Open Area % = Debris Clogging %= Zone 3 Weir Not Selected 4.04 N/A 3.00 N/A 0.00 N/A 3.00 N/A 70% N/A 50% N/A ft (relativetobasin bottom at Stage = 0 ft) feet H:V (enterzero for flat grate) feet %, grate open area/total area $'o User Input: Outlet Pipe w/ Flow Restriction Plate (Circular Orifice, Restrictor Plate, or Rectangular Orifice) Depth to Invert of Outlet Pipe = Circular Orifice Diameter = Zone 3 arcular Not Selected 0.00 N/A 4.50 N/A User Input: Emergency Spillway (Rectangular or Trapezoidal) Spillway Invert Stage= Spillway Crest Length = Spillway End Slopes = Freeboard above Max Water Surface = 6.00 15.00 4.00 0.50 Calculated Parameters for Overflow Weir Height of Grate Upper Edge,. Ht= Over Flow Weir Slope Length = Grate Open Area / 100-yr Orifice Area = Overflow Grate Open Area w/o Debris = Overflow Grate Open Area w/ Debris = ft {distance below basin bollom al SLage= 0 ft) inches ft {relative to basin bottom at Stage = 0 ft) feet H:V feet Zone 3 Weir Not Selected 4.04 N/A 3.00 N/A 57.04 N/A 6.30 N/A 3.15 N/A feet feet should be > 4 ft2 ft2 Calculated Parameters for Outlet Pipe w/ Flow Restriction Plate Outlet Orifice Area = Outlet Orifice Centroid = Half -Central Angle of Restrictor Plate on Pipe = Zone 3 Circular Not Selected 0.11 N/A 0.19 N/A N/A N/A Calculated Parameters for Spillway Spillway Design Flow Depth= 0.62 feet Stage at Top of Freeboard = 7.12 feet Basin Area at Top of Freeboard = 0.31 acres ft` feet radians Routed Hydrograph Results Design Storm Return Period = One -Hour Rainfall Depth (in) = Calculated Runoff Volume (acre -ft.) = OPTIONAL Override RunoffVolume (acre -ft) = Inflow Hydrograph Volume (acre$ft) Predevelopment Unit Peak Flow, q (cfs/acre) _ Predevelopment Peak O (cfs) _ Peak Inflow O (cfs) _ Peak Outflow O (cfs) Ratio Peak Outflow to Predevelopment Q = Structure Controlling Flow = Max Velocity through Grate 1 (fps) = Max Velocity through Grate 2 (fps) = Time to Drain 97% of Inflow Volume (hours) = Time to Drain 99% of Inflow Volume (hours) = Maximum Ponding Depth (ft) = Area at Maximum Ponding Depth (acres) = Maximum Volume Stored (acre -ft) = WQCV E'RV 2Year 5Year 10 Year 25 Year 50 Year 100 Year 500 Year 0.53 1.07 1.02 1.46 1,75 2.07 2.42 2.72 0.00 0.155 0.518 0.371 0.559 0.726 0.944 1,129 1328 0.000 0.155 0.518 0.371 0.559 0.726 0.944 1.129 1328 #N/A 0,00 0.00 0.01 0.02 0.24 0.81 1.16 1,56 0.00 0.0 0.0 0.1 0.2 1.6 5.4 7,7 10..3 0.0 3.1 10.1 7.2 10.8 14,0 18.2 21,7 25.5 #N/A 0.1 0.6 0.5 0.7 0,8 1.1 1,2 1,3 #N/A N/A N/A N/A 4.1 0.5 0.2 0.2 0,1 #N/A Plate Vertical Orifice 1 Vertical Orifice 1 Vertical Orifice 1 Vertical Orifice 1 Outlet Plate 1 Outlet Plate 1 Outlet Plate 1 #N/A N/A N/A N/A N/A N/A 0.0 0.0 0.0 4N/A N/A N/A N/A N/A N/A N/A N/A N/A #N/A 38 44 44 44 45 44 44 44 #N/A 40 50 48 51 52 53 54 55 #N/A 1.63 3.11 2.53 3.27 3.89 4.61 5.21 5,84 #N/A 0.17 0.2.3 0.22 0.24 0.25 0.27 0.29 0.31 #N/A 0.144 0.455 0.325 0.493 0.644 0.829 1.000 1.185 #N/A Detention Basin Outlet Structure Design LID -Detention, Version 3.17 (February 2017) 25 10 5 0 - 5COYR IN i-... - 5COYR OUT 1COYR IN i ` 1COYR OUT 50YRIN a a 50(R OUT - - — 25YRIN 25YR OUT 10YRIN - - - - 10YR OUT IN 5YR •5YR OUT 2YR IN �- 2YROUT EURVIN - - EURVOUT if (*lkik ri s WWI IN •••A A• WOCVOUT il jpilli:11 .,NiuNsi\‘..., !'`rte . >-_--frrsooart w��'w ---"*IMIP*11/41,.---"-----,-,--:-----: eatswesna. - a -wm. rA.-m-.r...-.�Ew �'SL.CS� an ^� �-� � L Y Y Y Y Y F Y Y i Y Y Y 0.1 1 TIME [1r] 10 7 6 = 4 a W n to z z 3 0 2 0 al.., 500YR =1O0YR 5OYR 25YR = 10YR 5YR - 2YR =€URV wgcv //r illikkkoit,1141/43/41/4 I 0.1 1 DRAIN TIME[hr] 10 100 AREA [ftn2J, VOLUME [ftA3] 60,000 50,000 40,000 30,000 20,000 10,000 0 0.00 User Area [fL^2] InLerpolaLed Area [R" 2] • Summary Area [fl^2] Volume [nn] • •*•.• Summary Volume [fth3] Outflow [cis] Summary O ulflow [cis] L0U 2.00 3.00 4.00 PONDING DEPTH [ft] 5.00 6,00 1.40 - 1.20 1.00 - 0.60 .4 O J LL 0.60 0.40 - 0.20 0.00 7.00 S -A -V -d Chart Axis Override minimum bound maximum bound X-axis Left Y -Axis Right Y -A -.:is Detention Basin Outlet Structure Design Outflow Hydrograph Workbook Filename: Storm Inflow Hydrographs UD-Detention, Version 3.07 (February 2017) The user can override the calculated inflow hydrographs from this workbook with inflow hydrographs developed in a separate program. T me Interval ..29 min Hydrograph Constant 1.166 SOURCE WORKBOOK WORKBOOK WORKBOOK WORKBOOK WORKBOOK WORKBOOK WORKBOOK WORKBOOK #N/A TIME WQCV [cfsj EURV [cfsJ 2 Year [cfs] 5 Year [cfsj 10 Year [cfs] 25 Year [cfsJ 50 Year [cis.] 100 Year [cfs] 500 Year [cfsj 0:0D:00 0.00 0,00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 0:04:17 0.00 0.00 0.00 0.00 0,00 0.00 0.00 0.00 44N/A 0:08:35 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/.A 0:12:52 0.14 0.45 0.32 0.48 0.62 0.80 0.95 1.11 44N/A 0:17:10 0.37 1,20 0.87 1.30 1,67 2.16 2.57 3.01 44N/A 0:21:27 0.95 3.09 2.23 3.33 4.30 5.55 6.61 7,73 4N/A 0:25:44 2.62 8.50 6.13 9.15 11.80 15.24 18.14 21.24 44N/A 0:30:02 3.05 10.06 7.22 10,84 14.03 18.18 21.71 25.48 44N/A 0:34:19 2.90 9.59 6.38 10.34 13.40 17.37 20.75 24.37 44N/A 0:38:37 2.64 8,73 6.26 9.41 12.20 15.82 18.89 22.18 44N/A 0:42:54 234 7.79 5.58 8.40 10.90 14.15 16.92 19.88 44N/A 0:47:11 2.00 6.72 4.80 7.25 9,42 12.25 14.66 17.24 44N/A 0:51:29 1.75 5,86 4.19 6.32 8.20 10.66 12.75 14.99 44N/A D:55:46 1.58 5,30 3.79 5.72 7,43 9.66 11.56 13.59 44N/A 1:00:04 1.23 4.37 3.11 4.71 6.14 8.00 9.59 11.29 44N/A 1:04:21 1.03 3.56 2.53 3.85 5.02 6.56 7.87 9.28 44N/A 1:08:38 0.73 2,73 1.93 2.95 3.87 5.08 6.12 7.23 UN/A 1:12:56 0.56 2,03 1.42 2.20 2,89 3.81 4.60 5.46 44N/A 1:17:13 0.41 1,47 1,04 1.59 2.09 2.75 3.34 3.98 44N/.A 1:21:31 0.33 1.14 0.81 1.24 1.62 2.12 2.57 3,05 44N/A 1:25:48 0.27 0.94 0.67 1.02 1.33 1.74 2.10 2.49 44N/A 1:30:05 0.23 0.80 0.57 026 1.13 1.48 1.78 2.11 44N/A 1:34:23 0.20 0.70 0.50 0.76 0.99 1.30 1.56 1.35 44N/A 1:38:40 0.18 0.63 0.45 0.68 0.89 1.17 1.40 1,66 44N/A 1:42:58 0.17 0.58 0.42 0.63 0.82 1.07 1.29 1.53 44N/A 1:47:15 0.13 0,43 0.30 0.46 0.60 0.79 0.95 1,12 44N/A 1:51:32 0.09 0.31 0.22 0.34 0,44 0.58 0.69 0.32 44N/A 1:55:50 0.07 0.23 0.16 0.25 0.32 0.42 0.51 0.60 44N/A 2:00:07 0.05 0,17 0.12 0.18 0.24 0.31 0.38 0.45 44N/A 2:04:25 0.03 0.12 0.08 0.13 0.17 0.22 0.27 0.32 44N/A 2:08:42 0.02 0.09 0.06 0.09 0.12 0.16 0.19 0.23 44N/A 2:12:59 0.02 0.06 0.04 0.07 0.09 0.11 0.14 0,16 44N/A 2:17:17 0.01 0.04 0.03 0.04 0.06 0.08 0.09 0.11 44N/A 2:21:34 0.01 0.02 0.02 0.03 0.03 0.05 0.06 0,07 44N/A 2:25:52 0.00 0.01 0.01 0.01 0.02 0.02 0.03 0.04 44N/.A 2:30:09 0.00 0.00 0.00 0.00 0.01 0.01 0.01 0,01 44N/A 2:34:26 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 2:38:44 0.00 a® 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 2:43:01 0.00 0,00 0.00 0.00 0.00 0.00 0.00 0,00 44N/A 2:47:19 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 2:51:36 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 2:55:53 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 3:00:11 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 3:04:28 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/.A 3:08:46 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 3:13:03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0,00 44N/A 3:17:20 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 3:21:38 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 3:25:55 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 3:30:13 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 3:34:30 0.00 0,00 0.00 0.00 0.00 0.00 0.00 0,00 44N/A 3:38:47 0.00 0,00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 3:43:05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 3:47:22 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 3:51:40 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 3:55:57 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 4:00:14 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 4:04:32 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 4:08:49 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 4:13:07 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 4:17:24 0.00 0,00 0.00 0.00 0.00 0.00 0.00 0,00 44N/A 4:21:41 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 4:25:59 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 4:30:16 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 4:34:34 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 4:38:51 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 4:43:08 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 4:47:26 0.00 0,00 0.00 0.00 0.00 0.00 0.00 0,00 44N/A 4:51:43 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 4:56:01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 5:00:18 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A 5:04:35 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/.A 5:D8:53 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 44N/A Detention Basin Outlet Structure Design UD-Detention, Version 1,07 (February 2017) Summary Stage -Area -Volume -Discharge Relationships The user can create a summary S -A -V -D by entering the desired stage increments and the remainder of the table will populate automatically. The user should graphically compare the summary S -A -V -D table to the full S -A -V -D table in the chart to confirm it captures all key transition points. Stage -Storage Description Stage .41 area `:"2] Area acr_s] Volume :_-.3] Vouume lac-::] Total Outflow :.:td 4889 0.00 0 0.000 0 0.000 0.00 4890 1.00 4,763 0.109 2,357 0.054 0.05 4891 2.00 8,900 0.204 9,192 0.211 0.24 4891.7 2.70 9,652 0.222 15,789 0,362 0.52 4892 3.00 9,957 0.229 18,730 0.430 0.60 4893 4,00 11,082 0.254 29,250 0.671 0.79 4894 5.00 12,312 0.283 40,947 0.940 1.17 4895 6.00 13,656 0.313 53,931 1.238 1.28 For best results, include the stages of all grade slope changes {e.g. ISV and Floor) from the S -A -V table on Sheet 'Basin'. Also include the inverts of all outlets {e.g. vertical orifice, overflow grate, and spil lway, where applicable). CIRCULAR CONDUIT FLOW (Normal & Critical Depth Computation) Project: SecureCare Storage Pipe ID: Storm Sewer - Design Point 'I ?low ATE Z I) 1 Design Information (Input) Pipe Invert Slope Pipe Manning's n -value Pipe Diameter Design discharge So = n= D= = 0.0400 0.0130 18.00 20.90 ft/ft inches cfs Full -flow Capacity (Calculated) Full -flow area Full -flow wetted perimeter Half Central Angle Full -flow capacity Calculation of Normal Flow Condition Half Central Angle (0<Theta<3.14) Flow area Top width Wetted perimeter Flow depth Flow velocity Discharge Percent Full Flow Normal Depth Froude Number Calculation of Critical Flow Condition Half Central Angle (0<Theta-c{3.14) Critical flow area Critical top width Critical flow depth Critical flow velocity Critical Depth Froude Number Af= Pf= Theta = Of = Theta = An= Tn- Pn = Yn= Vn = Qn = Flow = Fr, _ Theta -c = Ac= Tc = Yc = 1/c = Fr, _ 1.77 4.71 3.14 21.07 2.25 1.54 1.17 3.37 1.22 13.59 20.90 99.2% 2.09 2.87 1.76 0.40 1.47 11.88 1.00 sg ft ft radians cfs radians sg ft ft ft ft fps cfs of full flow supercritical radians sg ft ft ft fps UD-Culvert_v3.04 DP 1.xlsm, Pipe 6/22/2017, 4:27 PM CIRCULAR CONDUIT FLOW (Normal & Critical Depth Computation) Project: SecureCare Storage Pipe ID: Storm Sewer - Design Point 2 ?kw Arm Z I) 1 Design Information (Input) Pipe Invert Slope Pipe Manning's n -value Pipe Diameter Design discharge So = n= D= = 0.0200 0.0130 18.00 14.86 ft/ft inches cfs Full -flow Capacity (Calculated) Full -flow area Full -flow wetted perimeter Half Central Angle Full -flow capacity Calculation of Normal Flow Condition Half Central Angle (0<Theta<3.14) Flow area Top width Wetted perimeter Flow depth Flow velocity Discharge Percent Full Flow Normal Depth Froude Number Calculation of Critical Flow Condition Half Central Angle (0<Theta-c{3.14) Critical flow area Critical top width Critical flow depth Critical flow velocity Critical Depth Froude Number Af= Pf= Theta = Of = Theta = An= Tn- Pn = Yn= Vn = Qn = Flow = Fr, _ Theta -c = Ac= Tc = Yc = 1/c = Fr, _ 1.77 4.71 3.14 14.90 2.26 1.55 1.16 3.39 1.23 9.61 14.86 99.7% 1.47 2.63 1.72 0.74 1.40 8.65 1.00 sg ft ft radians cfs radians sg ft ft ft ft fps cfs of full flow supercritical radians sg ft ft ft fps UD-Culvert_v3.04 DP 2.xlsm, Pipe 6/22/2017, 4:29 PM INLET IN A SUMP OR SAG LOCATION Project = Inlet ID = SecureCare Storage Inlet at Design Point 1 MINOR Design Information llnuut) Type of Inlet Local Depression (additional to continuous gutter depression 'a' from'Q-allow) Number of Unit Inlets (Grate or Curb Opening) Water Depth at Flowline (outside of local depression) Grate Information Length of a Unit Grate Width of a Unit Grate Area Opening Ratio for a Grate (typical values 0.15-0.90) Clogging Factor for a Single Grate (typical value 0.50 - 0.70) Grate Weir Coefficient (typical value 2.15 - 3.60) Grate Orifice Coefficient (typical value 0.60 - 0.80) Curb Opening Information Length of a Unit Curb Opening Height of Vertical Curb Opening in Inches Height of Curb Orifice Throat in Inches Angle of Throat (see USDCM Figure ST -5) Side Width for Depression Pan (typically the gutter width of 2 feet) Clogging. Factor for a Single Curb Opening (typical value 0.10) Curb Opening Weir Coefficient (typical value 2.3-3.7) Curb Opening Orifice Coefficient (typical value 0,60 - 0.70) Total Inlet Interception Capacity (assumes clogged condition) Inlet Capacity IS GOOD for Minor and Major Storms (>Q PEAK) Inlet Type = about! No = Ponding Depth = L0(G)_ Wo _ Aram° = Cg (G) C.r, (G) Co (G) _ H,eri _ Klima! rl Theta = Wp_ C. (C) _ Cw(C)= Ca(C)= Qa PEAK REQUIRED = MAJOR CDOT Type R Curb Opening 3.00 3 - 8.0 8.0 MINOR MAJOR N/A N/A N/A N/A N/A N/A i„t, N/A f._ MINOR MAJOR 5.00 6.00 6.00 63.40 4.00 0.10 0.10 3,60 0.67 MINOR MAJOR 21.8 10.1 inches inches feet feet feet inches inches degrees feet 21,8 cfs 20.9 cfs Overrsde Depths UD-Inlet_v3.14 DP 1.xlsm, Inlet In Sump 6128/2017, 12:10 PM INLET IN A SUMP OR SAG LOCATION Project = Inlet ID = SecureCare Storage Inlet at Design Point 2 ,f —La (C) MINOR Design Information llnuut) Type of Inlet Local Depression (additional to continuous gutter depression 'a' from'Q-allow) Number of Unit Inlets (Grate or Curb Opening) Water Depth at Flowline (outside of local depression) Grate Information Length of a Unit Grate Width of a Unit Grate Area Opening Ratio for a Grate (typical values 0.15-0,90) Clogging Factor for a Single Grate (typical value 0.50 - 0.70) Grate Weir Coefficient (typical value 2.15 - 3.60) Grate Orifice Coefficient (typical value 0.60 - 0.80) Curb Opening Information Length of a Unit Curb Opening Height of Vertical Curb Opening in Inches Height of Curb Orifice Throat in Inches Angle of Throat (see USDCM Figure ST -5) Side Width for Depression Pan (typically the gutter width of 2 feet) Clogging. Factor for a Single Curb Opening (typical value 0.10) Curb Opening Weir Coefficient (typical value 2.3-3.7) Curb Opening Orifice Coefficient (typical value 0,60 - 0.70) Total Inlet Interception Capacity (assumes clogged condition) Inlet Capacity IS GOOD for Minor and Major Storms (>Q PEAK) Inlet Type = magi No = Ponding Depth = L0(G)_ Wo _ Aram° = Cg (G) C.r, (G) Co (G) _ H,eri _ Klima! rl Theta = Wp_ C. (C) _ Cw(C)= Ca(C)= Qa PEAK REQUIRED = MAJOR CDOT Type R Curb Opening 3.00 2 8.0 8.0 MINOR MAJOR N/A N/A N/A N/A N/A N/A i„t, N/A f._ MINOR MAJOR 5.00 6.00 6.00 63.40 4.00 0.10 0.10 3,60 0.67 MINOR MAJOR 15.9 inches inches feet feet feet inches inches degrees feet 15.9I cfs 7.1 14.9 cfs Overrde Depths UD-Inlet_v3.14 DP 2.xlsm, Inlet In Sump 6128/2017, 12:11 PM APPENDIX 3 REFERENCED INFORMATION • 194 ■ 444 iii• pip . ■ • !t • • • • * ■ • d ■ • • • i • a • t M' ■ a .. ra r Ica 4 • * a • • tip i 4 h • •t!' t e 4 i ■ • 4 I. t- •• • 4 4 • * 4 • ■ 4 •• ' Sit i -- f ♦ i i i f e*. 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MAP NUMBER 08123C1870E EFFECTIVE DATE JANUARY 20, 2016 Federal Emergency Management Agency. This is an official copy of a portion of the abrove referenced flood map. It was extracted using F -MIT On -Line_ This map does not reflect changes or amendments which may have been made subsequent to thedate on the tithe blocl'z. For the latest product information about National Hood Insurance Program flood maps checkc the FEMA flood Map Store at www.ronse_fema.gov DRAINAGE REPORT REVIEW CHECKLIST Project Name: PUDZI8-0005 Grow Your Own Storage The purpose of this checklist is to provide the applicant's Engineer a basic list of items that County Staff will review in regards to a drainage report. The drainage design shall meet the requirements of the Weld County Code and commonly accepted engineering practices and methodologies. A detention pond design (or other stormwater mitigation design) is appropriate for projects which have a potential to adversely affect downstream neighbors and public rights -of -way from changes in stormwater runoff as a result of the development project. The design engineer's role is to ensure adjacent property owners are not adversely affected by stormwater runoff created by development of the applicant's property. REPORT (© = complete, ❑ = required) ❑ Stamped by PE, scanned electronic PDF acceptable ❑+Certification of Compliance ❑ Variance request, if applicable Description/Scope of Work Number of acres for the site xi El Methodologies used for drainage report & analysis Design Parameters ❑ Design storm - Not stated in the report ❑ Release rate - Not stated in the report ❑URBANIZING or NON -URBANIZING - see Number 2 below El Overall post construction site imperviousness - See Number 1 below X ■ xl Soils types Discuss how the offsite drainage is being routed Conclusion statement must also include the following: ❑ Indicate that the historical flow patterns and run-off amounts will be maintained in such a manner that it will reasonably preserve the natural character of the area and prevent property damage of the type generally attributed to run-off rate and velocity increases, diversions, concentration and/or unplanned ponding of storm run-off for the 100 -year storm. ❑ How the project impacts are mitigated. Construction Drawings ❑ Drawings stamped by PE, (scanned electronic PDF preferred) Drainage facilities ❑Outlet details ❑ Spillway ❑Retention Walls Maintenance Plan ❑ Frequency of onsite inspections El Repairs, if needed ❑ Cleaning of sediment and debris from drainage facilities ❑ Vegetation maintenance ❑ Include manufacturer maintenance specifications, if applicable ❑ Specifics on maintenance of retention wall Comments: 1. When calculating the weighted C value for the proposed site, please model the pond water surface area using a 100% impervious value. 2. Weld County Code states that when a project is within the Urbanizing area, the Urbanizing jurisdiction release rates may apply. This site is within the urbanizing jurisdiction of Longmont and Firestone. If their release rates 4/11/2018 Weld County Department of Public Works/ Development Review 1111 H Street, Greeley, CO 80631 I Ph: 970-400-3750 I Fax: 970-304-6497 www.weldgov.com/departments/public_works/development_review/ DRAINAGE REPORT REVIEW CHECKLIST are more restrictive than Weld County, the release rate may be required to be changed. Weld County has contacted these entities and is waiting on their response in reference to their release rates. 3. Basin E appears to be mislabeled on the map. 4. Basin D appears to include some of the development within the site. The runoff from impervious areas needs to be routed to the detention pond. 5. The Urban Check should not be used when calculating the time of concentration for the historic site. 6. Page 1, section I I.A.2 of the report indicates that the drainage basins flow into the mountains. This seems to be an error. 7. Page 4 of the report references the 2012 Weld County Engineering and Construction Criteria Manual. This is out of date. Please update this reference to the 2017 Weld County Engineering and Construction Guidelines. 8. The runoff coefficients used are for type C/D soils. The site is 2/3 A soils and 113 B soils. Please use one of these types of soils for the calculations. 9. The drainage drawing refers to the outlet at DP2 as a type D outlet and the report and calculations indicate this will be a type R outlet. Please update for consistency. 10. The spillway depth is greater than .5 feet, as required by code. 11. The flow in the culverts is supercritical. Permanent erosion protection will be required at the pipe outlets. Please include the design information within the report. 12. Once the revised design and drainage report have been submitted, the County may provide additional comments in addition to the ones listed above. Depending on the complexity of the changes made, a full 28 -day review period may be required. 13. Please provide a written response on how the above comments have been addressed when resubmitting the drainage report. Thank -you. 4/11/2018 Weld County Department of Public Worksl Development Review 1111 H Street, Greeley, CO 80631 'Ph: 970-400-3750 l Fax: 970-304-6497 www.weldgov.com/departments/public_works/developrment_review! Property Consultants, llc December 20, 2018 Chris Gathman n Weld County Department of Planning Services 1555 North 17th Ave. Greeley, CO 80631 Re: PUDK17-0003 - Longmont Self Storage PUD Chris, Following are the responses to the comments received from various agencies for the completed Sketch Plan Phase of the Longmont Self Storage (previously known as SecurCare Self Storage) PUD, Case No. PUDK17-0003. Following are the referral agency responses noted in the WELD COUNTY DEPARTMENT OF PLANNING SERVICES letter dated October 15, 2017 that will be responded to here in this letter: Weld County Department of Public Works, referral dated September 25, 2017 Weld County Department of Public Health and Environment, referral dated September 18, 2017 Weld County Department of Planning Services — Engineer, referral dated September 26, 2017 Colorado Geological Survey, referral dated September 26, 2017 Colorado Division of Water Resources, referral dated September 12, 2017 Mountain View Fire Protection District, referral dated September 6, 2017 Weld County Sheriff's Office, referral dated August 30, 2017 St. Vra in Valley School District RE1-J, referral dated August 31, 2017 Town of Frederick, referral dated August 29, 2017 Longmont Soil Conservation District, referral dated October 3, 2017 Weld County Code Compliance, referral dated August 29, 2017 The following referral agencies did not provide a response: Department of Building Inspection Colorado Department of Transportation Colorado Parks and Wildlife City of Longmont Town of Firestone 4032 Defoe St., Strasburg, CO80136 • Phone 303.317.3000 • aaron@aperiopc..com Longmont Self Storage PUD Response to Sketch Plan Comments December 20, 2018 WELD COUNTY DEPARTMENT OF PLANNING SERVICES COMMENTS:, OVERVIEW AND DISCUSSION A pre -application meeting with the Department of Planning Services will be required prior to submittal of the PUD change of zone application. After meeting with the Department of Planning Services, the Town of Frederick, City of Longmont and Town of Mead will be required to be contacted by the applicant per the Coordinated Planning Agreements delineated in Chapter 19 of the Weld County Code. Evidence that the notification requirements of Chapter 19 of the Weld County Code for these municipalities have been satisfied will be required before the change of zone application can be processed. A pre -application meeting was held with the Department of Planning Services on November 8, 2018. The Notice of Inquiry (NOl) Forms for Longmont, Mead and Firestone were discussed as requirements to be completed prior to submitting the Change of Zone application. Additionally, we have sent and NOI form to Frederick per the 10-15-17 comment letter. The PUD Change of Zone application shall delineate the proposed zone district for the use. As the site is located adjacent to an existing PUD (Vista Commercial) that allows I-1 (Industrial) uses, staff recommends that the applicant delineate the PUD for I-1 Industrial uses (as storage is allowed in the I-1 zone district) on the change of zone application. The PUD Change of Zone application delineates the proposed zone district to include I-1 land uses. Unless otherwise requested, the proposed lots would be bound to adhere to the respective zone district requirements, including setback, offsets and building height. Easements shall follow rear and side lot lines whenever practical and shall have a minimum total width of twenty (20) feet apportioned equally on abutting properties and, where front line easements are required a minimum of fifteen (15) shall be allocated as a utility easement. The proposed single lot will adhere to the zone district requirements. Easements will be delineated and dedicated as appropriate with the Final Plan application. LAND USE REFERRAL COMMENTS The Department of Public Health and Environment, in their referral dated 9/18/2017, indicated that the application has not satisfied Chapter 27 of the Weld County Code regarding water service and Chapter 24 of the Weld County Code regarding sewer service. Documentation was not provided from Left Hand Water District and St. Vrain Sanitation District indicating that water and sewer service can be provided to the property. Will -serve letters for both the Left Hand Water and St. Vrain Sanitation Districts are included in this Change of Zone (COZ) application. Prior to proceeding to the next process, written evidence of water agreements will be required. Appropriate documentation shall be provided which indicates not only that taps are available, but provide assurances that these connections will be made. The style of assurance may take several forms, however pre -purchase of taps, line extension agreements, tap service agreements, or another form of "participation agreement" will be acceptable. The agreements shall be approved by the Weld County Attorney's Office prior to submitting the Change of Zone application. A will -serve letter has been obtained from Left Hand Water and is included with the COZ application. 2 Longmont Self Storage PUD Response to Sketch Plan Comments December 20, 2018 Prior to proceeding to the next process, written evidence of sewer agreements will be required. A Will Serve Letter has been obtained from St. Vrain Sanitation District. Additionally, the development guide components (including environmental impacts will need to be addressed in the change of zone application. The development guide addresses all required concerns, including environmental impacts. The applicant shall contact all referral agencies and provide written documentation indicating that their concerns have been addressed to the satisfaction of each referral agency. Subsequent submittals associated with this proposed PUD must address all issues discussed above, as well as the questions and concerns of the following referral agencies: Weld County Department of Public Works - No response received. Weld County Department of Public Health and Environment - Response received and attached. Weld County Planning Services -Engineer - No response received. Mountain View Fire Protection District - No response received. Colorado Geological Survey - No response from CGS received, letter of response from H -P Kumar attached. Colorado Division of Water Resources - Response attached. Longmont Soil Conservation District - Verbal response received, no further comment. Each of the above agencies has been contacted, and written documentation of discussion addressing their respective concerns is noted above and attached as received and/or applicable. Some agencies have not responded to our requests for further discussion concerning comments. Note that no comments were issued in the responses from the Weld County Sheriff, The Town of Frederick, and Weld County Zoning. Please note that the comments issued from Weld County Public Works, Weld County Planning Services — Engineer (with the exception of the Drainage Report comment which has been addressed) and Mountain View fire Protection District appear, in our opinion, to be comments applicable to the Final Plat component of the PUD process rather than the Change of Zone. Specific concerns to be addressed include but are not limited to: A complete development guide shall be submitted with the Change of Zone application. An updated preliminary drainage report to reflect the 5 -year release rate. The applicant shall hold a pre -application meeting for the PUD change of zone application. Notice of this meeting shall be provided to the Towns of Firestone, Mead and the City of Longmont. Cooperative Planning Agreement (IGA) notification requirements shall be addressed per Chapter 19 of the Weld County Code prior to processing the Change of Zone application. A Development Guide has been prepared and submitted with this COZ application. The Preliminary Drainage Report has been updated. A pre -Application meeting was held on November 8, 2018 at Weld County. NOI forms have been returned from Longmont and Mead with a response of "no interest" in annexation. Firestone has been unresponsive to the NOI form requests via email (11-14-18 and 12-07-18) and telephone (11-29-18 and 12- 06-18). 3 Longmont Self Storage PUD Response to Sketch Plan Comments December 20, 2018 If you should have any questions, or need any additional information, please don't hesitate to call me at 303-317-300 or email me at Aaron@aperiopc.com Since rely, Aaron hompson Ap rlo Property Consultants, LLC 4 Aaron Thompson From: Sent: To: Subject: Attachments: Good morning, Evan - Aaron Thompson <Aaron@aperiopc.com> Monday, December 10, 2018 9:48 AM epinkham@weldgov.com PUDK17-0003 Boulder Creek - Longmont Self Storage Weld County Public Works Comrnents,docx When you have a moment can yo.'' please give me a call regarding the attached comments? We are preparing to move this project forward into a Change of Zone application, and as part of that application we are preparing a response to Sketch Plan comments. As I read your comments, they would all appear to be more applicable to the Final Plan/Site Plan and construction document phases of the PUD and approvals. Is that correct or are there any items that need addressed with the COZ application? Also, I would like to check on the status of the access permit application. Please note that I will be the project contact moving forward through the PUD and site approvals. Thanks, Aaron Thompson Aperio Property Consultants, llc 4032 Defoe St. Strasburg, CO 80136 Phone (303) 317-3000 Cell (303) 960-8941 Aaron@aperiopc.com i Aaron Thompson From: Sent: To: Subject: Aaron Thompson <Aaron@aperiopc.com> Monday, December 10, 2018 2:10 PM 'Lauren Light' RE: PUDK17-0003 - Longmont Self Storage PUD Yes, we have done that per the requirements for drafting the Development Guide which will be submitted with the COZ application. Thanks, Aaron Thompson Phone (303) 317-3000 Cell (303) 960-8941 Aaron@aperiopc.com From: Lauren Light [mailto:flight@weidgov.com] Sent: Monday, December 10, 2018 1:56 PM To: Aaron Thompson <Aaron@aperiopc.com> Subject: RE: PUDK17-0003 - Longmont Self Storage PUD The only thing left to do is to address Environmental impacts as outlined in Chapter 27 of the Weld County Code. That should be fairly easy to do as its writing out answers to several items. Lauren Light, M.B.S. Program Manager/Environmental Planner, Environmental Health Services Weld County Department of Public Health & Environment 1555 N. 17th Ave. Greeley, CO 80631 (light weldgov.com 970-400-2211 (office) 017 elLILArill �r Ph AB 1__s I r 4 a 17 Confidentiality Notice: This electronic transmission and any attached documents or other writings are intended only for the person or entity to which it is addressed and may contain information that is privileged, confidential or otherwise protected from disclosure. If you have received this communication in error, please immediately notify sender by return e-mail and destroy the communication. Any disclosure, copying, distribution or the taking of any action concerning the contents of this communication or any attachments by anyone other than the named recipient is strictly prohibited. From: Aaron Thompson <Aaron@aperiopc.com> Sent: Monday, December 10, 2018 10:56 AM To: Lauren Light <Ilight@weldgov.com> Subject: PUDK17-0003 - Longmont Self Storage PUD 1 Caution: This email originated from outside of Weld County Government. Do not click links or open attachments unless you recognize the sender and know the content is safe. Good morning, Lauren - We are moving the PUD application process for the former SecurCare (now Longmont Self Storage) project into the Change of Zone (COZ) phase. As part of the application, we are required to respond to Sketch Plan comments. In review of your comments, other than will -serve letters from Left Hand and St. Vrain, the only comment I see applicable to the COZ application phase is to add the notes you requested, which we have done. Would you please let me know otherwise? Attached are the will -serve letters from Left Hand and St Vrain, which will also be included in the COZ application materials. Thanks, Aaron Thompson Aperio Property Consultants, lic 4032 Defoe St. Strasburg, CO 80136 Phone (303) 317-3000 Cell (303) 960-8941 Aaron@aperiopc.com Virus -free. www.avast.com 2 Aaron Thompson From: Sent: To: Subject: Good morning Hayley Aaron Thompson <Aaron@aperiopc.com> Monday, December 10, 2018 9:30 AM hbalza no @weldgov.com PUDK17-0003 Boulder Creek - Longmont Self Storage We are proceeding with the self storage project south of Hwy 119 on WCR 5. Our next step is the change of zone (COZ) application. We met with Chris Gathman on 11-8-18 to discuss requirements for that application, of which one is to respond to all of the sketch plan comments. Your comments, as I read them, primarily consider Final Plan and construction items, with the exception of revisions to the Preliminary Drainage Report which has been revised and updated for the COZ submittal. Can you please respond and let me know that for the COZ application the only required item at this time would be the drainage report revision? Thank you, Aaron Thompson )4perio Property Consultants, lie 4032 Defoe St. Strasburg, Co80136 Phone (303) 317-3000 Cell (303) 960-8941 Aaron@aperiopc.com 1 Aaron Thompson From: Sent: To: Subject: Attachments: Good morning LuAnn — Aaron Thompson <Aaron@aperiopc.com> Monday, December 10, 2018 9:57 AM Ipenfold@rrivfpd.org PUDK17-0003 - Longmont Self Storage PUD Fire District Comments.pdf We are moving this project forward into the Change of Zone application phase of the PUD process. As such, one of the requirements for the COZ is to respond to comments issued during the Sketch Plan phase. As I read your comments, it would appear that these are applicable to Final Plan and Construction Documents/Building Permit phases of the project, is that correct? Please note that the COZ is to define the land use and zoning only at this time, it does not delineate specifics of layout, buildings, access, etc. Would you mind replying or calling me when convenient? Thank you, Aaron Thompson Aperio Property Consultants, lie 4032 Defoe St. Strasburg, CO 80136 Phone (303) 317-3000 Cell (303) 960-8941 Aaron@aperiopc.com 1 Aaron Thompson From: Sent: To: Subject: Attachments: Good morning, Jill Aaron Thompson <Aaron@aperiopc.com> Thursday, December 20, 2018 8:10 AM "carlso n@mines.edu" Longmont Self Storage - Weld County - PUDK17-0003 - CGS Unique No. WE -18-0009 Colorado Geological Survey Comments.pdf; Letter for Proposed Securecare Storage Facil ity.pdf Attached are your comments received from referral on a project located south of Hwy 119 on WCR5 in Weld County, as well as H-P/Kumar's response letter. Would you please review and send me back an email that your concerns have been addressed or any additional information you may need? Thank you, Aaron Thompson lip erlo Property Consultants, llc 4032 Defoe St. Strasburg, CO 80136 Phone (303) 317-3000 Cell (303) 960-8941 Aaron@aperiopc.com 1 kunsar & Associates, hit• Geotechnical and Materials Engineers and Environmental Scientists 10302 South Progress Way Parker, Colorado 80134 Phone: (303) 841n7119 r 119 Fax: (303) 841-7556 Email: hpkparker@kumarusa.com December 18, 2018 Property Consultants, lie Attn: Aaron Thompson 4032 Defoe St. Strasburg, CO 80136 Project No. 17-8-141 Subject: Discussion of laboratory swell -consolidation test result of sample in boring Ba9 at a depth of four feet in a Geotechnical Engineering Study, Proposed Securecare Storage Facility @$'/Kumar, Project No. 17-8-141, March 29, 2017). Dear Mr. Thompson: After reviewing other swell -consolidation test results, swell -compression of +0.2 to -0.1 %, for the samples in sandstone bedrock, in our opinion, the compression of greater than 4% in sample at boring B-9 at a depth of four feet was the result of sample disturbance. We believe subgrade preparation and foundation recommendations in our geotechnical engineering study for proposed Securecare Storage Facility are still valid. If there are any questions, please call, Sincerely, Kumar and Associates Cuong Vu, Ph.D., F.E. KU MAR & ASSOCIATES Aaron Thompson From: Sent: To: Subject: Brucker - DNR, Sarah <sarah.brucker@state.co.us> Monday, December 10, 2018 129 PM Aaron@aperiopc.com Re: Weld County Case PUDK17-0003 - Longmont Self Storage PUD The provided letter form the Left Hand Water District, dated May 8, 2018, is sufficient evidence of water availability and resolves the concerns of t he Division of Water Resources. Sarah Brucker, P.E. Water Resources Engineer COLORADO Division of Water.. Resources UUr=partnieat or Niiturdl RAI.ScivrtkiS P 303.866.3581 x 8249 1313 Sherman Street, Suite 821, Denver, CO 80203 sarah.brucker@state.co.us I www.water.state.co.us on Mon, Dec 10, 2018 at 11:25 AM Aaron Thompson <Aaron coperiopc.com> wrote: Good morning, Sarah We are preparing to move this case forward through the PUD Change of Zone step with Weld County, and as such are required to provide written responses of communication with all agencies that offered comment on the sketch plan review. I review of your comments, I do not see anything that would preclude us from moving forward except the "will -serve" letter from Left Hand Water District (attached for your records). We are aware of the NPDES and storm water management permitting and requirements during construction, which will be prepared and coordinated during the site permitting processes with the County. Can you please let me know if we have addressed your concerns? Thanks, Aaron Thompson Aperio 1 Hello