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Home My WebLink About20172998.tiffPLANNED UNIT[JEVELOPMENT.(PU13)::CHAN�'"iE.OF•Z4NE:APPLiCATION. :FOR PLANNING DEPARTMENT USE RECEIPT # /AMOUNT # $APPLICATIN RECEIVED B Parcel .:Number . t .. 0 7 Date Received: 5/22/17 Case #: PUDZ17-0004 Planner: DA • .1 di it. r urn L=.er fourid..nn Tax l.fl ;nfOnTiat;e ni s o . tainableat the, eld :County-:Assessor's..Offit e, or. .coo etd. .us • include alt, lots being included s in the •application• area. if :additional .space is'required*•attach an add lthhnal sheet) _ . • . .., . . -� . PT v4f 2 N vV4 - - . 2. :� v�r�sl�i 3 !� off. � �� ..68. West Legal: Description.. , .Sectio.p , To . li .� .. , - - g . AAddress�• If Applicable) HW 66_ . Longmont, .00 60504 : Proper' . :... � � � .;1:132 . . AG - - : _ i tri+ct:.x 1)0 Total Acreage:: = :Proposed #/Lai :1 E iii ng Zone Di tract..:� Propose ...7pne District; ri - ... g :: Proposed ul divl lion: Marne: ) n ion :.Farts Average Lot Size: I.04 AC Minimum .L+ot: i +e: •99 AC• Proposed Area (Acres) Open. Space: 4,6 Are you applying for Conceptual a:Specific Guide? Conceptual Specific FEE OWNER(S) OF THE PROPERTY of additional spaceis required, attach an additional sheets) Name: Union Farms LLC .. Work Phone ## 303 641 5058 Home Phone # ., . � � . Email Address Andrew@Copper�homes.corr. Address: 16256 Waterside Lane City/State/Zip Code. Longmont, CO 80504. ` APPLICANT OR AUTHORIZED AGENT (See. Below: Authorization must accompanyapplications signed by Authorized Agent) Name: Andrew Batson Work.Phone # 303 641 5058 Home Phone:# . Email Address A @Copper -he eesco Address: al 2666 .Waterside Lane. . :City/State/Zip Code Longmont CO_80504 U1ILITIES:. -Water: - Longs Peak Water -.. Sewer: Septic . - Gas-: • - - &el Electric )(Gel - Phone: Centu r • Link • • DISTRICTS: •= School RSIJ: -- • Fire_: Mountain view • _:.._._ Post • Mead . fisor 1 . .._ I (We) hereby depose and state under penalties Of perjury that all statements, proposals, and/or .plans submitted with or contained-wi irk -the apPlication are true .:and.: prrept • to the Oest ofi :m . (our)knowiedge.. Signatures of all: fee owners of • property. must : sign : this application..1f an, Authorized Agent .signs, a letter of. authorization :from all fee owners must* be -included with *the application. If a c•prporation Is. the fee Owner, notarized. evidence must be. i ncluded.:. indieati rtg the si - nat his -the legal authority to sign for the• corporation, I: (we), the undersigned-, -hereby request hearings before the- . .. WeldWeld.. County Planning Commission and . the Board •of .Count. Commissioners concerning the proposed Change of Zone . for the above described unincorporated . area of .Weld County,. Colorado: gsa ger" • . ignature:: Owner or-Authorized:Agent• .Date .: Signature:.Owner:pr Authorized Agent Date AGENCY AGREEMENT And Authorization Whereas Union Farms Development, 1,LC is the T �, 6TH lawful A T,�'A�TRACTOFLAND IN THE WEST HALF OF THE owner of the property located at RANGE 68 WEST OF THETHE ,�i_r f�"VTHE COUNTY�T�-�+It`�EST QUARTER, .�EcT1+Qi,l�' 29, OF WELD, STATE OF COLORADO, TOWNSHIP ESP NORTH, CRIBED AS COMMENCiNG AT THE NORTHWEST CORNER OF SAID SECTION �T+O�+'�T+�1-r��'rEy� rTRUE ►�'�}�1I'T� OF sE+G'INt'�w'�N�': 7r!-�fF1+�'�'ff ,� C� �' �`f,+ 1405.0 F 29; ��'�!�` SOUTH Y�y,T 89 � �' F.�1 � 7�' �`+��Q_ �7 FEET +r�ES..r l� Jk�f1lr THENCE ��yySOUTH 89 47' EASTV6CF,e FEET, MORE OR LESS, TO T PARALLEL C !1 ti�ylf THE �.C TWHE WEST OF SAID THE NORTHWEST QUARTER OF �}r'ill0 SEC ,I J Or Y 29: THENCE THE C�� L�fY� OF P ;�� MV �ti? �� OF OR LESS TO THE TRUE PO/N T OF BEGINNING, H 1405 0 FEET TO THENORTH LINE OF SAID SECTION 29: THENCE IVORTH 89 47' WEST ALONG' THE NORTH LINE OF , .�tf ,E T1 ry' � �. FEET, MORE More commonly known as 1132 Highway 66, Leap mon 9 t,C O 80504. And Union Farms Development has entered into Coper Homes Limited shall acted as Agent subdivision of this parcel, Andrew Batson is authorized signatory an agreement with Copper Homes Limited wheremn for the Owner and General Contractor for the the Manager of Copper Homes Limited and the Therefore Copper Homes Development is hereby agreements,eb�r authorized to execute all applications, ermits, plats, affidavits and any other documents pursuant parcel of land� be known as Union Farms. This a p ant to the development of this 'riting.tV��rit shall remain in full force until revoked in Jon E - ris an For: Unp.n Farms Deve Its: Manager • Document must be filed electronically. Paper documents are not accepted. Fees & forms are subject to change, For more information or to print copies of filed documents, visit www.sos.state.co.us. -Filed Colorado Secretary of State Date and Time: 09/20/2016 05:27 PM ID Number: 20161630425 Document number:. 20161630425 Amount Paid: $50.00 ABOVE SPACE FOR OFFICE USE ONLY Articles of Organization filed pursuant to § 7-80-203 and § 7-80-204 of the Colorado Revised Statutes (C.R.S.) 1. The domestic entity name of the limited liability company is Union Farms Development, LLC (The name of a limited liability company must contain the term or abbreviation :.limited liability company ,:, "ltd. liability company " ,.limited liability co. ' r "ltd. liability co.", „ limited t", "1.1.c.", "Lk", or "ltd.". See P-90-601, C.R.S.) (Caution: The use of certain terms or abbreviations are restricted by law. Read instructions for more information.) 2. The principal office address of the limited liability company's initial principal office is Street address 1351 Red Ash Lane Mailing address (leave blank if same as street address) (Street number and name) Boulder CO 80303 (City) (State) (ZIP/Postal Code) United States (Province — applicable) (Country) (Street number and name or Post Office Box information) (City) (State) (ZIP/Postal Code) (Province — if applicable) (Countmy,) i 3. The registered agent name and registered agent address of the limited liability company's initial registered agent are Name (if an individual) or (if an entity) Benson Jon (Last) (First) (Middle) (Suffix) (Caution: Do not provide both an individual and an entity name.) Street address 1351 Rod Ash Lane Mailing address (leave blank if same as street address) (Street number and name) Boulder (City) CO 80303 (State) (ZIP Code) (Street number and name or Post Office Box information) ARTORG LLC Page 1 of 3 Rev. 12/01/2012 ( The e following statement is adopted by marking the bat) The person appointed as registered agent has consented to being so appointed. VP Co (State) (ZIP Code) 4. The true name and mailing address of the person forming the limited liability company are Name (if an individual) or (if an entity) Benson Jon (Last) (First) • (Middle) (Suffix) (Caution: Do not provide both an individual and an entity name.) Mailing address 1351 Red Ash Lane (Street number and name or Post Office Box information) Boulder CO 80303 (City) (State) (ZIP/Postal Code) United States . (Province — if applicable) (Country) (If the following statement applies, adopt the statement by marking the box and include an attachment.) The limited liability company has one or more additional persons forming the limited liability company and the name and mailing address of each such person are stated in an attachment. 5. The management of the limited liability company is vested in (Mark the applicable box.) one or more managers. or the members. 6. (The following statement is adopted by marking the box.) There is at least one member of the limited liability company. Ye 7. (If the following statement applies, adopt the statement by marking the box and include an attachment.) This document contains additional information as provided by law. 8. (Caution: Leave blank if the document does not have a delayed effective date. Stating a delayed effective date has significant legal consequences. Read instructions before entering a date) (If the following statement applies, adopt the statement by entering a date and, 'applicable, time using the required fbrmat.) The delayed effective date and, if applicable, time of this document is/are (mm/dd/yyyy hour:minute am/pm) Notice: Causing this document to be delivered to the Secretary of State for filing shall constitute the affirmation or acknowledgment of each individual causing such delivery, under penalties of perjury, that the document is the individual's act and deed, or that the individual in good faith believes the document is the act and deed of the person on whose behalf the individual is causing the document to be delivered for filing, taken in conformity with the requirements of part 3 of article 90 of title 7, G.R.S., the constituent documents, and the organic statutes, and that the individual in good faith believes the facts stated in the document are true and the document complies with the requirements of that Part, the constituent documents, and the organic statutes. ARTORG LLC Page 2 of 3 Rev. 12/01/2012 This perjury notice applies to each individual who causes this document to be delivered to the Secretary of State, whether or not such individual is named in the document as one who has caused it to be delivered. 9. The true name and mailing address of the individual causing the document to be delivered for filing are Benson Jon (Last) (First) 1351 Red Ash Lane (Middle) (Suffix) (Street number and name or Post Office Box information) Boulder CO 80303 (City) (State) (SIP/Postal Code) United States (Province if applicable) (Comity) (If the following statement applies, adopt the statement by marking the box and include an attachment.) This document contains the true name and mailing address of one or more additional individuals causing the document to be delivered for filing. Disclaimer: This form/cover sheet, and any related instructions, are not intended to provide legal, business or tax advice, and are furnished without representation or warranty. While this form/cover sheet is believed to satisfy minimum legal requirements as of its revision date, compliance with applicable law, as the same may be amended from time to time, remains the responsibility of the user of this form/cover sheet. Questions should be addressed to the user's legal, business or tax advisor(s). ARTORG LLC Page 3 of 3 Rev. 12/01/2012 Matrixn DESIGN GROUR % May 3, 2017 Diana Aungst, AICP, CFM Weld County Department of Planning Services 1555 N 17th Ave, Greeley, CO 80631 Subject: Union Farms - Waiver Request for Lot Size in Estate Zoning Dear Diana: i6oi Blake Street, Suite 200 Denver, Colorado 80202 303-572-0200 matrixdesigngroup.com This letter has been written to request a waiver for the Union Farms project to allow for less than 2.5 -acre parcels in Estate Zoning. The Union Farms project is a proposed 12 -lot subdivision that will create 11 new lots and create parcel around an existing home for the 12th lot. The estate zoning has been selected as there is not public sanitary sewer in the area and therefore septic systems will be required for each proposed property and it's our understanding this is the only zone district that allows for use of septic systems. The minimum 0.99 -acre lot size that has been proposed is allowable by the Colorado Department of Health and Environment for lots with septic systems and is also consistent with the lot sizes adjacent to the project (lots due east off this project are 1 -acre +- lots). Furthermore, the 1 -acre lot allows for the creation of 11 new lots and a 12th lot around an existing home and the number of lots is important as that allows the developer to afford the on- site improvements that are required to support development as well as design and construct a regional waterline improvement that is required. We trust this information is sufficient to support our waiver request, please let us know if you have any questions or need further information. Sincerely, ehsitch,, Patrick Chelin, PE Vice President Denver Colorado Springs Phoenix Anniston Atlanta Omaha Parsons Pueblo Sacramento Washington, D. C. i6oi Blake Street, Suite 200 Denver, Colorado 80202 303-572-0200 matrixdesigngroup.com g ng ro up. com AN EMPLOYEE -OWNED COMPANY May 10, 2017 Diana Aungst Weld County Department of Planning Services 1555 N 17th Avenue Greeley CO 80631 Re: Response to Comments Union Farm Dear Ms Aungst: Matrix Design Group, Inc. appreciates the efforts that Weld County has made in reviewing this project and is pleased to submit this letter of response to address the review comments for the project referenced above. The responses are written in bold italics. REFERRAL COMMENTS The applicant shall contact all referral agencies (including the referral agencies referred to in the previous section) and provide written documentation indicating that their concerns have been addressed to the satisfaction of each referral agency. Response: Ten of the referral agencies provided a written response to the Sketch Plan submittal, as listed above. Where a comment was provided we have addressed the comment with the Change of Zone submittal, as detailed in each response below. Town of Firestone: The Town of Firestone did not have any comments. Colorado Geologic Survey: Comments pertain to the shallow groundwater, soils and bedrocks, slow percolation ratesand corrosive soils. These concerns will be addressed when applying for building permits. Longmont Conservation District Comments regarding farmland and weeds are noted. Weld County Sheriff's Office: No conflicts were noted Mountain View Fire Protection District: Denver Colorado Springs Phoenix Anniston Atlanta Niceville Parsons Pueblo Sacramento Washington, ac May 10, 2017 Page 2 No objections to the proposed plan as long as meets requirements of the Fire District. Comments that pertain to design will be taken care of when applying for building permits. Colorado Department of Transportation: One access is proposed for this development. Weld County Department of Planning Services: No comments were made that cannot be addressed with Change of Zone submittal or with the Final Plan. An access permit, typical section, traffic narrative, and a drainage report were submitted with theChange of Zone submittal. Weld County Department of Public Health and Environment: No comments were made that cannot be addressed during the Change of Zone submittal or with the Final Plan. Attached to the Change of Zone submittal are a soils report, and tine Design Guide which talks about the mitigating the environmental impacts. Thank you again for your review, we look forward to continued dialogue and working together. Sincerely, Matrix Design Group, Inc. Patrick Chelin, PE Director of Development Services cc: 16.862.003 rnatrixdesirgngroup. corn Union Farms Development Guide UNION FARMS Development Guide Prepared for: Andrew Batson Union Farms LLC 12656 Waterside Lane Longmont, CO 80504 Prepared by: • Matrix. DESIGN GROUP AN EMPLOYEE -OWNED COMPANY 1601 Blake Street, Suite 200 Denver, Colorado 80202 (303) 572-0200 fax (303) 572-0202 February 20►17 Union Farms Development Guide Introduction The following Development Guide narrative addresses the requirements of Chapter 27, Article VI of the Weld County Code. Union Farms is a proposed 12 lot estate subdivision. Lot sizes range from 0199 acre to 1.10 acres, with two tracts being utilized for drainage and open -space purposes. The projected is located south of State Highway 66 and approximately 660 feet east of County Road 3. Access to the proposed Planned Unit Development (PUD) will be from Highway 66. Component One - Ea iraa en tal impacts 1) Noise and Vibration Noise levels will be consistent with ordinary uses, including lawn mowing and similar uses. Lot size will allow for local noise level to diminish between properties. 2) Smoke, Dust and Odor Levels of smoke, dust, and odor will be consistent with ordinary residential uses. Lot size will allow for dust or odor to diminish between properties. Heat, Light and Glare Lighting will be residential in nature and be mainly used for indoor purposes and outdoor for safety and navigation. 4) Visual/Aesthetic Impacts The design of homes and outbuildings will be consistent with the character and scope of the surrounding residences, and consistent with Copper Homes vision for the development Electrical Interference Electrical interference will be consistent with normal residential use. 6) Water Pollution Runoff created by this project will be directed toward a detention pond located at the south edge of the project. The pond shall be designed per Weld County Criteria. Wastewater Disposal on site wastewater treatment systems (OWTS) are planned on being used for the 11 lots. From the CGS "Site soils are somewhat to very limited in suitability for conventional septic tanks due to slow percolation rates. Septic systems my need to be designed by an engineer." Design will be on a lot to lot basis, based on the individual soil test performed for each lot. 2 March 2017 Matrix DESIGN GROUP AN' EMP'LO7tE OWNED CQ.Mrn4v Union Farms Development Guide 8) Wetland Removal No wetland exist on the project site. Erosion and Sedimentation Erosion and Sedimentation will be kept on site by utilizing BM's such as silt fences and others. Also a detention pond is being built as part of this project which will help reduce runoff to historic levels and keep sedimentation on site. 10) Excavation, Filling and Grading Earthwork for the development will be limited to the roadway, detention pond, utilities and residence construction. 11) Drilling, Ditching and Dredging Drilling and ditching will be used for utility and foundation construction. No dredging is anticipated. 12) Air Pollution Air pollution will be consistent with ordinary residential use including automobile and lawn equipment usage. 13) Solid waste individual home owners will provide household waste containers and contract with waste disposal contractors. It is anticipated that one provider will be selected to minimize trips and road impacts associated with waste removal. 14) Wildlife Removal Union Farms is currently agricultural and residential uses and the lack of ground cover limit the amount of wildlife activity on site, therefore it is not anticipated that wildlife removal will be necessary. 15) Natural vegetation removal Natural vegetation will only be removed where houses and yards are located, the proposed roadway and driveway access. 3 March 2017 • Matrix4 ..rx DESIGN GROUP RN' EMPLOYEE OWNED coMNRANV Union Farms Development Guide 16) Radiation/Radioactive material No radiation or radioactive material was found on site nor will any be introduced except those produced by common household items. 17) Drinking water source Potable water will be provided by Longs Peak Water District. A commitment to serve letter was prepared by Longs Peak Water District and is provided with the Change of Zone submittal. 18) Traffic impacts Traffic impacts will be minimal due to the size of the planned development and no offsite improvements will be necessary. A traffic narrative is provided with the Change of Zone submittal. Component Two - Service Provision Impacts 1) Schools Union Farms will be located in the St. Frain School District RE -1J, which did not comment on the sketch plan. The number of potential students is limited due to the small amount of proposed lots. Law enforcement Union farms will be served by the Weld County Sheriffs department. They have reviewed the request and find no conflicts of interest with the proposed development. ) Fire Protection Union Farms is served by Mountain View Fire Protection District and a letter was forwarded from LuAnn Penfold, Fire Marshall, and is included with the change of zone submittal materials. 4) Ambulance Ambulance service is provided by Weld County Ambulance Services, which did not comment on the sketch plan. Transportation A traffic narrative was submitted with the Change of Zone submittals and is not expected to make a significant impact on the surrounding streets. 4 March 2017 Matrix DESIGN GROUP API EMPLO7tE OWNED €G.MRMHN Union Farms Development Guide 6j Traffic Impact Analysis A traffic narrative was submitted with the change of Zone submittals and is not expected to make a significant impact on the surrounding streets. ) Storm Drainage Runoff will be contained in a detention pond at the south end of the site. A drainage report was included with the Change of Zone submittal. 8) Utility Provisions Electric Xcel Energy Gas: Xcel Energy Water: Longs Peak Water District Sanitary: On site wastewater treatment systems Phone: Century Link 9) Water Provisions Union Farms is located within the Longs Peak Water District. A commitment letter from the Longs Peak Water District was attached with the Change of Zone submittal. 10) Sewage Disposal Provisions Sewage will be provided by on -site wastewater treatment systems on individual lots, and will be designed on a lot to lot basis at the building permits stage. 11) Structural Road Improvements Plan Improvements to adjacent roadways are not anticipated as part of this project. component Three - Landscaping Elements 1) Landscape Plan Landscape for individual lots will be done by the homeowner, with a landscape plan submitted with the final building permit. Buffering and Screening Buffering and Screening will not be required, as the majority of the lots acreage will remain more natural in appearance. 5 March 2017 Matrix DESIGN GROUP API EMPLO7tE OWNED €G.MRn4N Union Farms Development Guide 3) Maintenance Schedule Maintenance will be provided by the Home Owners Association (HOA) and will be sufficient for the time of year and maintenance required for proposed common areas landscape. 4) Site Improvement Agreement An agreement for maintaining common landscaping will be provided with the fina 5) Adequate Water plan. Evidence of adequate water to sustain the landscaping is covered with the will serve letter from Longs Peak. Component Four - Site Design 1) Unique Features The topography on site has an existing slope of 3-4% to the south with a ditch to the west, which will be utilized to help bring flows to the detention pond. 2) PUD Rezoning The lots and landscaping will be consistent with surrounding land and vegetation as the majority of the lots acreage will remain more natural in appearance. 3) Allowed uses The proposed 12 lot subdivision will be zoned as an Estate Zone. This will require a waiver as an Estate Zone has a minimum lot size of 2.5 acres while this subdivision has an average lot size of 1.04 acres. Houses and outbuildings will be consistent with the rural character, and the Estate Zoning District. 4) Use Compatibility The proposed Union Farms will be compatible with the existing agriculture and estate development that surrounds the property. 5) Hazards or Overlays Union Farms is not located inany floodplain, overlay district, or geologic hazard zone. 6 March 2017 Matrix DESIGN GROUP AN' EMPLOTtE OWNED €OMrn4v Union Farms Development Guide Component Five - Common Open Space Usage This development is located within Cooperative Planning Area (CPA) for the Town of Mead, City of Longmont and the Town of Firestone. As this development exceeds nine lots it is considered Urban Scale development, which means that open space shall be allocated 15% of the total site acreage. Total open space acreage is approximately 4.6 acres which is approximately 24%. Component Six - Signage Signage for Union Farms will be located at the entry to the subdivision off of Highway 66 and will be in accordance with Weld County regulations. Component Seven - RUA Impact Union Farms is not in any of the three Regional Urbanization Areas. Component Eight Intergovernmental Agreements This development is located within Cooperative Planning Area (CPA) for the Town of Mead, City of Longmont and the Town of Firestone. Both the Town of Mead and City of Longmont did not provide a response to the sketch plan. The Town of Firestone does not have any comments, their letter is attached with the Change of Zone submittal. 7 March 2017 Matrix DESIGN GROUP AN EMPLO7tIE OWNED €o.Mr&Nv UNION FARMS DEVELOPMENT LLC 12656 Waterside Lane Longmont, CO 80504 Tel. 303.641.5058 April 11, 2016 To: Weld County Planning Department RE: Statement regarding ditch crossing in proposed subdivision On April 10, 2016 I met with Jerry Hergenreder who is the president of the Starbart Ditch which crosses the site of the proposed Union Farms development. I reviewed the development plans with Jerry and he stated that he has no objections whatsoever with the development including the widening of the culvert at the entrance drive. Jerry's email is Jerry. Hergenredergmail.com and his phone is 720-320-2353. Sincerely, e'aLret.a-sa.s_ Andrew Batson Authorized Agent for Union Farms Development, LLC Diana Aungst From: Sent: To: Cc: Subject: Hi Diana, Rebecca Toberman < RToberman@fi restoneco.gov> Monday, November 16, 2015 4:17 PM Diana Aungst Dave Hoskins Re: Weld County PUD Thank you so much for referring Dave to us. We did have an opportunity to discuss his pending project. Per our discussion, we understand that he will not be pursuing annexation into Firestone for the location noted below and he will be proceeding with his application through Weld County Planing. Again, thank you for the opportunity to discuss this with the applicant. Rebecca Toberman I Planning Coordinator Town of Firestone I Community Development Department Physical: 8308 Colorado Blvd. Ste 200, Firestone, CO 80504 Mail: P.O. Box 100, Firestone, CO 80520 Direct 303.531.6260 I Cell 303.885.4828 I Fax 720.476.4232 Toberman cx,firestoneco.gov I www..firestoneco.gov From: Dave Hoskins <dave @copper-homes.com> Date: Monday, November 16, 2015 at 10:53 AM To: Rebecca Toberman <RToberman@firestoneco.gov> Subject: Weld County PUD Rebecca We are looking at doing a 9 lot PUD at 1132 Hwy 66 in Longmont. Since this is in your IGA with weld county I would like to talk to you about the towns interest in the project? Dave Hoskins Construction Manager Copper Homes 720.933.5698 1 Notice of Inquiry Development within an intergovernmental Agreement Urban Growth Boundary Date of Inquiry Town Referred to: Name of Person Inquiring Property Owner Legal Description Planner Legal Parcel f Major Crossroads Type of Inquiry 5/1/15 Longmont Dave Hoskins Flatiron Mortgage tending, R r Diana Aungst PT W2NW4 29 3 68 '120729000031 Hwy 66 and CR 3 PUD for a 9 dot subdivision The above person inquired about developing a parcel of land inside your designated intergovernmental Agreement Urban Growth Boundary. This person has been referred to your community by Weld County Planning to discuss development options on this site.. Do you wish to annex this property? Weld County Comments: _ Town/City Comments, our coordinated tannin area (CPA) with 'Feld_ ou 3 tv. We look forward to, seeing additional referral information at future stages in the planning process. Signature of Weld County Planner Signature of Town City Representative It is the applicant's responsibility to return the completed form to Weld County. p Weld County Planning Department 1555 N 17th Ave, Greeley. CO 80631 4 (970;. 353.6100, ext. 3540 ava (9,?0) 304-6498 FaK Diana Aungst Subject FW: Pre -Application Review Request _ Dave Hoskins - 1132 Highway 66 Original Message From: Jennifer Vecchi[mailto:vecchiassociatescomcast.net] Sent: Wednesday, December 16, 2015 2:07 PM To: Tom Parko Jr. <tparko@co.weld.co.us> Cc: Diana Aungst <daungst@co.weld.co.us>; steve.stamey@comcast.net; 'Helen Migchelbrink' <HMigchelbrink@townofinead.org>; 'Mike Segrest' <MSegrest@townofinead.org> Subject: Pre -Application Review Request _ Dave Hoskins - 1132 Highway 66 Hi Tom, I'm responding on behalf of the Town of Mead to the Pre -Application Review Request for Dave Hoskins of Copper Homes, which is a proposed 9 lot PUD located at 1132 Highway 66. Mr. Hoskins did come to the Town of Mead to discuss his proposal prior to going to the county. Dan Dean and I met with him. We conveyed to Mr. Hoskins that the property is located outside of the Town of Mead's Urban Growth Area and that the town would not be interested in annexing the property for development. The property is also located outside of the defined development boundary between the Town of Mead and the City of Longmont, which is currently in the process of being renewed. Please contact me if you have any questions. Thank you for the opportunity to review this proposal. Best regards, Jennifer Jennifer E. Vecchi, AICP, LEER AP BD+C Principal Vecchi & Associates, LLC Urban Planning & Sustainable Design Consultants P.O. Box 1175 Longmont, CO 80502-1175 Phone: 303-774-0173 Fax: 303-774-0173 Email: vecchiassociates@comcast.net Website: ite: www.vecchiassociates.com 1 <https://www.avast.com/antivirus> This email has been checked for viruses by Avast antivirus software. www.avast.com <https://www.avast.comlantivirus> Weld bounty Treasurer Statement of Taxes Due Account Number R4770986 Parcel 120729000031 Lega E Description Situs Address 2562W PT W2NW4 29 3 68 BEG 89D4 7'E 660' FROM NW COR S l405' S89O47'E 668 8' MUL 1`11405' 109D47 w 67 t .26' Mil. TO BEG 1132 HIGHWAY 66 WELD BXC BEG S89D47'E 971.76' FROM NW COR S891347'E 360' SODOM 302.5' N 9D47'W 360' 1']ODO6'E 302.5' TO BEG ( 75R) Al ret"' 1-4rd /12CAr---0 Cant r Account: R4770986 UNION FARMS DEVELOPMENT LLC 1351 RED ASH LET BOULDER, CO 80303-9547 w Y a rs •.. ca u aa. ow to ad u T1 se S s a a a ii. t 0 a a a Y a iii a• S if a #! IP N 1i I d n s .a E4 !a at IN a a a IN a a a- a a a! AIL a a a a Year 2016 Charges Tax Billed $1,473.40 Payments $1,473.40 a M s a- e n r e Balance $0.00 Grand Total Due as of 04/11/201? $0.00 Tax Billed at 2016 Rates for Tax Area 2325 - 2325 Authority WELD COUNTY SCHOOL ITT RE1J J NORTHERN COLORADO WATER. (NC ST VRAIN LEFT HAND WATER (S MOUNTAIN VIEW FIRE HIGH PLAINS LIBRARY Taxes Billed 2016 * Credit Levy Mi I I Levy 15.8000000* 56,9450000 1.0000000 0.1560000 11.7470000 3.2710000 Amount Values $261,81 AG -FLOOD $ 43. II`tRR1GATED LAND S16.57 $2.58 $194.65 $ 54.20 8 8.91900 00 $1,473.40 AG -MEADOW HAY LAND FARM/RANCH RESIDENCE -IMPS OTHER BLDGS.- AGRICULTURAL Total. Actual Assessed $14,475 $4,200 $617 $146,471 $1,831 $180 $11,660 $530 $163,394 $16,570 ALL TAX LIEN SALE AMOUNTS ARE SUBJECT TO CHANGE DUE TO ENDORSEMENT OF CURRENTTAXESBYTHE VENN OLDER OR TO ADVERTISING AND DISTRAINT WARRANT FEES, CHANGES MAY OCCUR AND THE TREASURER'S OFFICE WILL NEED TO BE CONTACTED PRIOR TO REMITTANCE AFTER THE FOLLOWING DATES: PERSONAL PROPERTY AND MOBILE HOMES - AUGUST 1, REAL PROPERTY - AUGUST 1. TAX LIE(! WELD COUNTY TREASURER Pursuant to the Weld County Subdivision Ordinance, the attached Statement(s) of Taxes Due, issued by the Weld County Treasurer, are evidence that, as of this date, all property taxes, special assessments and priciens_ctirrently due and payable connected with the parcel(s) identified therein have been paid in ii .) C Siped�� _ Date Applicant Weld County Public Works Dept. 1111 H Street Access off of H WY 66 - P.O. Box 758 COOT jurisdiction Greeley, Co 80632 Phone: (970)304-6496 Fax: (97Q)304-6497 Name W �rr"rS�n ACCESS PERMIT APPLICATION FORM Property Owner (If different than Applicant) Name oiR ien.__.._ _cakons LLL Company Address 1.C (4;€ tamest Address V246 1rsktiker5ider Wane City LPngyvtpn+ State [0 Zip $o; -o4 Business Phone 103 641 t`,DV8 Fax E-mail kgtQtuc wtictn0 r+nc. C,oA Parcel Location & Sketch The access is on WCR 1,0 Nearest Intersection: WCR _ 30 at wcR 3 Distance from Intersection G60 "feek Parcel Number _Min 24-- o- pv_-D 3l ......__ --. Section/Tdrunship/Range_.S Z9t � T 6t' City�na Wvan'i- State %O Zip F34 co ti Phone araFax E-mail cM i Kornes (cm = Existing Access II= Proposed Access t is there an existing access to the property? ES NO N Number of Existing Accesses t. Road Surface Ty rye & Construction Information Asphaltic. Gravel Treated Other Culvert Size & Type �r Materials used to construct Access Rhc* t# Construction Start Date Finish Date Proposed Use o Temporary (Tracking Pad Required)! $75 Q Small Commercial or Oil & Gas/ 75 o Field (Agriculture Only)/Exempt HWY 66 (oee344 MOAS iC Nut- Cerer: i INCR i n Single Residential/$75 o Large Commercial/$150 U o Industrial/$15O Subdivision/ 15O Is this access associated with a Planning Process? c No ❑ USR Q RE x PUD o other tie u,� i� Attached Docur ents Traffic Control Plan -Certificate of Insurance -Access Pictures (From the Left, Right, & into the access) By accepting this permit, the undersigned Applicant, under penalty of perjury, verifies that they have received all pages of the permit application; they have read and understand all of the permit requirements and provisions set forth on all pages; that they have the authority to sign for and bind the Applicant, if the Applicant Is a corporation or other entity; and that by virtue of their signature the Applicant is bound by and agrees to comply with all said permit requirements and provisions, all Weld County ordinances, and state laws regarding facilities pstru ctio Signature ' Printed Name Approval or Denial will he issued in minimum of S days. Revised Date 6/29/in ,etrataiDate d v-17 Approved by _ ___ k Via. flie -:di s I ,� — ` _tricot= A.10 a 1 a ;.. s - 14 F UNION FARMS DRAINAGE REPORT Prepared for: Andrew Batson Union Farms, LLC 12656 Waterside Lane Longmont, CO 80504 Prepared by: Matlit nip DESIGN GROUP AN EMPLOYEE -OWNED COMPANY 1601 Blake Street, Suite 200 Denver, Colorado 80202 (303) 572-0200 fax (303) 572-0202 March h 2017 Union Farms Drainage Report TABLE OF CONTENTS General Location and I escription********************* **0!1!** 40,1*!**** *..••N..rn*•*!4f**,*41,,,14,•••/+t...•ss..a••***•* 1 A. Project Location 1 B. Property Description 1 II. DRAINAGE BASINS AND SUB -BASINS 2 A. Major Basin Description 2 B. Sub -Basin Description 2 III. DRAINAGE DESIGN CRITERIA 3 A. Regulations 3 B. Development Criteria and Constraints 3 C. Hydrologic Criteria 3 D. Hydraulic Criteria 3 E. Water QualityCriteria 4 IV. DRAINAGE FACILITY DESIGN********..**1*********/*1**,**********************,*****.****************1000*****•1*********** 4 A. General Concept 4 V. CONCLUSIONS .,+, *,,.,.....*......******5 A. Compliance with Standards B. Drainage Concepts 5 V. REFERENCES 6 FIGURES Vicinity Map 2. Flood Insurance Rate Map 3. Soils Report PULL-OUT MAPS A. Existing Drainage Basins Map — DM01 D. Proposed Drainage Basins Map — D1\402 APPENDICIES A. Site Hydrologic Calculations B. Hydraulic Calculations March 2017 tviatrixlii QLU1m!! CPDUp' Page i aY CBiinvrr-iasrh rr'iNSLUW Union Farms Drainage Report ENGINEER'S STATEMENT "I hereby certify that this report for the drainage design of the Union Farms site in Longmont, Colorado, was prepared by me, or under my direct supervision, in accordance with the provisions of Weld County Storm Drainage Criteria for the owners thereof.,, Elizabeth A. O'Brien Registered Professional Engineer State of Colorado No. 46730 March 2017 camas SPOIL! Page ii Union Farms Drainage Report I. General Location and Description This report summarizes the proposed stormwater system for the Union Farms project in Weld County. Discussed are the overall stormwater concepts, site hydrology and hydraulics, detention basins and water quality facilities. The development consists of approximately 19 -acres of residential development. The site is composed of two individual lots: Lot A, containing 1.40 acres of land is owned by Highland Properties 2015 LLC. Lot B contains 17.66 acres and is also owned by Highland Properties 2015 LLC. The project proposes to create a recorded exemption for Lot A, and develop the Lot B property to accommodate 11 individual lots, a road, and an onsite detention pond. The site is located approximately 3 miles west of the 1-25 Longmont exit, adjacent to the south side of Highway 66. The site is bounded by State Highway 66 to the north. A. Project Location The project area is located within the following location: Street Location. The property is located near the City of Longmont, in the County of Weld, State of Colorado. It is south of Highway 66, east of Weld County Road 3, north of Weld County Road 28 and west of Weld County Road 5. Township, Range, r/4 Section. The property is contained within a portion of the Northwest 'A of Section 29, Township 3 North, Range 68 West of the 6th Principal Meridian, County of Weld, State of Colorado. Major Drainageways. A lateral of the Starbert Ditch, owned by the Highland Ditch Company, passes through the northern portion of the proposed Lot A exemption. There are no major channels in the southern portion of the property that is to be developed. Saint Vrain Creek is located 3 miles to the south, it is the only drainage of any significance that is nearby. All runoff from this site eventually flows to Union Reservoir 0.7 miles to the southwest. Surrounding Developments. District Court Subdivision lies to the NE. and both unplatted and platted residential land to the west, south and east. Refer to Figure 1. the v,, icinity map. B. Property Description Area. The total area of the subject property is 19.06 acres. The site will be developed into eleven one acre or larger residential lots, a road and an onsite detention pond. Ground Cover and Soils. The Union Farms PUD Lot B site is currently undeveloped with native grasses cove ering the ground. The land slopes to the south at 3.2%,u across the site. Soils are a Wiley - Colby complex (.90%) and a Nunn clay loam (10%) predominantly a Hydrologic Soil Group type B. March 2017 PIMA GROUP Matrixrt 4 Page 1 Sid tY■1NV! l..95fslh r�YISYL Union Farms Drainage Report Major Open Channels and Property Ownership. A lateral of the Starbert Ditch, owned by the Highland Ditch Company, passes through the northern portion of the proposed Lot A exemption. There are no major channels in the southern portion of the property that is to be developed. Existing Major Irrigation Facilities. No irrigation facilities exist onsite. Proposed Land Use. The Front Range Crossing Property is proposed residential development. Floodplain Status. There are no existing floodplains onsite. IL DRAINAGE BASINS AND SUB -BASINS A. Major Basin Description The Union Crossing property is located within the Saint Vrain Creek Watershed. Previous studies that included the project site are: St. Vrain Creek Watershed Master Plan, Baker, November 25, 2014. The site does not drain directly into St. Vrain Creek but does drain to Union Reservoir which is where St. Vrain Creek drains to. The site drains to Union Reservoir through a series of small roadside ditches. There are no floodplains located on or near the site, see FIRM Map 08123 C 1860E, January 20, 2016. B. Su b -Base n Description The existing site is in one historic drainage basin, 19.06 acres, of which 17.06 acres contribute runoff downstream of the Starbert Ditch. Water from the northern 2.0 acres flow directly into the Starbert Ditch. This is an existing condition and there are two existing pipes that flow under the existing access road that will be replaced in kind with the addition of Union Farms Avenue. The existing 30" RCP and 12" RCP will be removed and replaced with longer pipes so Starbert Ditch can continue to flow unimpeded under Union Farms Avenue. The remaining 17.06 acres drains south and into an existing ditch which flows to the west and then follows an existing ditch to the south along Weld County Road 3 and into Union Reservoir. The proposed site will allow runoff from the northern 2 acres to flow into Starbert Ditch. Runoff from the developed 17.06 acres will flow into 4 proposed drainage ditches that flow to the south. The two ditches on the east and west sides of the site flow to the south and into proposed Type C Inlets which are piped into proposed pond forebays 1 and 3 through 18" RCPs. The two ditches along the sides of the road flow to a low point in the ditch at the end of the cul-de-sac and into a proposed Type C Inlet. A 24" RCP runs from the proposed Type C Inlet and into proposed pond forebay 2. The proposed pond will outfall into the existing drainage ditch on the southern end of the property. March 2017 Di PIMA GROUP Matrixrt Page 2 Sid tY■1NV! l..95fslr. r�YISYL Union Farms Drainage Report III. DRAINAGE ESIGN CRITERIA A. Regulations The Union Farms drainage system was designed based on the criteria outlined in the Weld County Engineering and Construction Criteria (April 2012). B. Development Criteria and Constraints The Site is located in the northeast portion of the St. Vrain Watershed as shown in the St. gain Creek Master Plan. No analysis was done in the Master Plan for the portion of the watershed in which the site is contained. Therefore Weld County Criteria will be utilized for the design. Surface runoff from the proposed Union Farms development site will be collected and routed to a detention basin. The required water quality capture volume (WQCV) is also provided in the detention basin. The proposed detention basin is designed to detain the 100 -year flow and release from the pond at a rate slightly above the pre -developed site, 5 -year runoff rate. The pre - developed site 5 -year runoff rate is 1.06 cfs and the proposed pond will detain the developed flowrate to 2.26 cfs. This flowrate is still much less that the 100 -year predeveloped flow rate of 45.24 cfs. A variance is being requested for this flowrate. The site is constrained by the existing ditch at the southern end of the property. The grading of the site and the pond has been done so that the outfall pipe will have fall from the pond to the existing ditch. C. Hydrologic Criteria The Rational Method was used to compute peak flow rates for the purpose of designing storm drainage system inlets and pipes. Rainfall depths were utilized from UDFCD. The 1 -hour, 5, 10 and 100 -year design point rainfall depths were found to be 1.45, 1.74 and 2.70 inlhr respectively. The 5 -year and 100 -year design storms were utilized for all calculations. StormCAD was utilized to design the pipe size and UDFCD spreadsheets were used to design the inlet, pond and pond putfll. No offsite flows flow onto the site. The calculations are included in Appendix A. D. Hydraulic Criteria FlowMaster was used to size the ditches along the road and the outside edges of the site. The results are included in Appendix D. The ditches were sized to convey the 100 -year flowrate and a foot of freeboard. The pond has been sized using urban drainage spreadsheet, UD Detention vs 3.05. The pond size and depth has been maximized based on the site constraints of the property line, lots and the existing ditch elevation. The orifice plate, outlet structure and spillway have been sized utilizing the Urban Drainage detention spreadsheet. The trickle channel is designed at the minimum slope of 0.5% and depth of 0.5 -feet. The forebays and micropool have been designed per Urban March 2017 PIMA GROUP Matrixrt 4 Page 3 Sid tY■1NV! l..95fslr. r�YISYL Union Farms Drainage Report Drainage criteria. The 5 -year predeveloped flow rate from the site at an assumed imperviousness of 2%, per Weld County Criteria, is 1.06 cfs. With the pond size restrictions and the necessity to drain the pond during the 100 -year storm in 72 hours or less the outflow from the developed site during the 100 -year storm will be 2.26 as. A variance will be requested for the pond. All spreadsheets are included in Appendix B. E. Water Quality Criteria The required treatment of the water quality capture volume (WQCV) for Union Farms is provided in the proposed pond. The WQCV is 0.214 Ac -Ft. The proposed pond calculations are presented in Appendix B. IV. DRAINAGE FACILITY DESIGN A. General Concept The proposed stormwater design will generally maintain the historic drainage discharge locations of the site. The western perimeter of the site will sheet flow toward a proposed drainage swale traveling from north to south at the western boundary of the site. The eastern perimeter of the site will sheet flow toward a proposed drainage swale traveling from north to south at the eastern boundary of the site. The middle of the site will flow towards the road and into drainage ditches located on the east and west sides of the road. These ditches flow to the south and into a proposed Type C inlet. The Type C inlet will outfall to the proposed pond through a 24" RCP. All runoff will flow into a proposed pondat the south end of the site. The outfall from the pond will flow into an existing ditch on the south end of the site that flows to Union Reservoir. B. Specific Detail 1. The 1 -hour, 5, 10, and 100 -year design pointrainfall depths were obtained from Figures 5-2, 5-3, and 5-6: Rainfall Depth -Duration -Frequency of the UDFCD Criteria Manual, Volume 1, respectively. Values of 1.45, 1.74, and 2.70 inlhr will be used in the analysis. From CHL's Historic Analysis the 5, 10 and 100 -year design point rainfalls for Union Farms are 1.09, 1.38 and 2.78, respectively. The larger rainfall amounts will be utilized. 2. Maintenance access to the ponds will be through the proposed 10 foot wide trail on the west side of the property. Pond maintenance will be performed by an HOA formed for the neighborhood. March 2017 Matti ft, ,t w rt QtUI0N GROUP Page 4 by ra. I NV! l..95fslr. r MISM Union Farms Drainage Report V. CONCLUSIONS A. Compliance with Standards The proposed Union Farms storm drainage system has been designed in accordance with the Weld County Engineering and Construction Criteria (April 2012) and the UDFCD Urban Storm Drainage Criteria Manual. B. Drainage Concepts 1. The 100 -year runoff from Union Farms will be fully conveyed by streets, ditch and inlets and pipes, to the proposed detention pond located in the southern portion of the property and eventually into Union Reservoir. The existing predevelopment 100 -year flowrate from the site is 45.24 cis. The proposed detention pond will decrease the 100 -year flowrate from the proposed site to 2.26 cfs. This site will decrease drainage flows from the area and therefore all existing ditches will be able to convey the flow. March 2017 Matti ft, ,t w rt QtUI0N GROUP Page 5 by ra. I NY[l..95fsl h r MISM Union Farms Drainage Report REFERENCES 1. Weld County Engineering and Construction Criteria, Weld County, April 2012. 2. St. Vrain Creek Watershed Master Plan, Baker, November, 25, 2014. 3. Federal Emergency Management Agency, January 20, 2016, Panel Map No. 0812301860E. 4. Urban Drainage and Flood Control District, 2016, Design Criteria Manual, Volumes 1, 2, 3. 5. Sketch Plan Drainage Report Highland Properties 2015 LLC. Weld County, Colorado, CHL Engineering and Surveying, October. 2015. March 2017 Matti ft, ,t w rt GROUP Page 6 by CM INV! l..95fslr. r Bikini Union Farms Drainage Report Appendix A — Site Hydrologic Calculations March 2017 Page 7 iY CYii M1 ei sieifs is Si Union Farms Drainage Report Appendix B Hydrologic Calculations March 2017 camas SPOIL! Page 8 WELD COUNTY DRAINAGE CODE STANDARDS AND CRITERIA VARIANCE REQUEST FORM -FOR ENGINEERS CODE SECTION 23-12-150 Pre-Application/Case Number PUD K 15M004 Parcel Number Lot B of RECX16-0002 Legal Description Being a part of the VV2NVV4 Sec 2 T3C ecttonrrownship/Range I l of the 6th P M. Weld County, Colorado Elizabeth O'Brien. RE. Consultant Engineer gineer for Copper Homes Limited rApplicanni understand and acknowledge that the Applicant is seeking land use approval of 12 lots, a road and an onsite detention pond. i (description of use) for the parcel described above. I have designed or reviewed the design for ("Design") the proposed land use set forth in the Application. I hereby certify, on behalf of Applicant, that the Design n will meet all applicable dr ainage pp d ainage requirements of the Weld County Code with s - • tion of variance(s) described on Exhibit bA. This certification is not a guarantee or warranty either expr (Engineer's Stamp) ras Engineer of Record Signature I /INAS 610715040es Applicant, understand and agree: that the intention of the Weld County Code is to reduce impacts of development on neighboring downstream properties and the public, P p p c,thatlam responsible to ensure no negative impacts to offsite properties occur, and that Weld County does not assume liability for damages from storm drainage. If this variance request is approved it is not setting and �s based on site specific constraints. precedent Applicant Signature Please attach rr r ,.�Z,, ��►.,�. _separate document (Exhibit A) addressing the following: t Describe the design criteria of the Weld County Code of which a variance is being requested. g Describe the proposed with engineering rationale which supports p alternative g g the intent of the Weld County Code. 3. Meet the design intent of the Weld County Code. 4. Demonstrate that granting of the variance will still adequately protect public health, safe and safety, general welfare. 5. Demonstrate there are no adverse impacts, from stormwater runoff, to the public rights of way g and/or offsite properties as a result of the project. Planning Director Approval indicated when signed by Director or appointee: 11/03/2015 Planning Director Name Signature Date of Approval Weld County Department of Plannin° Services Develo rent Fie 1555 17th Avenue., Gre .Ce co 1 Coloradoyw o 80 31 1 Ph, 970-353-6100 I www.co.weid.corusiDepartmentsiPlanningLoningi .con+ siDepartrr�entsiPlanningLaningi Matr 0 i X% kik pp 1 DESIGN GROUP February February 24, 2O17 Ms. Hayley Balzano Planning and Building Department 1555 N 17th Ave Greeley, CO 8O631 RE: Union Farms Detention Pond Dear Hayley: Variance Request 1601 Blake Street, Suite 200 Denver, Colorado 80202 Sob -672-0200 matrixdesigngroup.com Thank you for talking to me on Friday February 24th, 2017 to discuss Union Farms and the associated storm detention pond. As discussed, Union Farms would like to request a variance for the detention pond. We are requesting a variance to Section 5.1.1 Principles of Weld County Drainage Policy in the Weld County Engineering and Construction Criteria Manual. The requirement states that to the maximum extent practicable, storm drainage design for new development should strive to reduce stormwater runoff rates and prevent pollutant load increases. To accomplish this, in Weld County, storm drainage design is based on detention of the 1OO-year developed site runoff released at a five- year historic rate. Union Farms has an existing ditch south of the property that the proposed pond will outfall into. Currently the site drains to this ditch undetained. The surface runoff from the proposed Union Farms development site will be collected and routed to a detention basin. The required water quality capture volume (WQCV) is also provided in the detention basin. The proposed detention basin is designed to detain the 1O0 -year flow and release from the pond at a rate slightly above the pre - developed site, 5 -year runoff rate. The pre -developed site 5 -year runoff rate is 1.06 cfs and the proposed pond will detain the developed flowrate to 2.26 cfs. This flowrate is still much less than the 1OO-year predeveloped flow rate of 45.24 cfs. The site is constrained by the existing ditch at the southern end of the property and by the requirement that the 12 lots need to be at least one acre in size. The grading of the site and the pond has been done so that the outfall pipe will have fall from the pond to the existing ditch. And, the pond has been designed to meet Urban Drainages New Colorado Revised Statute 37-92-6O2 "Concerning a Determination that Water Detention Facilities Designed to Mitigate the Adverse Effects of Storm Water Runoff Do Not Materially Injure Water Rights". The law requires detention ponds to release or infiltrate at least 97% of all runoff from a rainfall event that is less than or equal to a 5 -year storm within 72 hours after the end of the event and in all cases to release or infiltrate at least 99% of the runoff within 12O hours after the end of events greater than a 5 -year storm. The pond has been optimized to meet these requirements. The proposed outfall flowrate of 2.26 cfs is the existing flowrate from the site during a 6 - year storm. Denver Colorado Springs Phoenix Anniston Atlanta Washington. D. C. Parsons Pueblo Sacramento February 24. 2017 Page 2 Due to the site grading constraints the pond cannot be made any larger or any deeper. And, a smaller outfall structure would cause the pond to not have a foot of freeboard or to meet the Urban Drainage required drain times of 72 and 120 hours for water rights. Therefore this pond has been designed to detain the site as much as possible while still meeting all criteria. The 2.26 cfs from the site will be able to be handled by the existing ditch as it is still less than the existing 100 -year undeveloped flowrate of 46.24 cfs. Thank you for your review and please confirm that the variance request is approved and that our recommended approach is acceptable to the County. Sincerely, Matrix Design Group, Inc. EMS 0 Zej Elizabeth O'Brien, PE Development Services www. ma tr xde'signgroup. L'orn C Q} w d. Ta Q � a O tS a• z E LL e? 8 r c t Cl cm 0to E 4 0 U fa a 'C z E V u C 02 40 STORM DRAINAGE SYSTEM COMPUTATION FORM +r, Ate y ~ N i ed tL tam g Q 'a w V n '�7S ►J ❑ C] qi ".- •• - «0LOr R'wIP°J ti C3 „r G) .53,. li1$l31u80 3 sin Ctrl 0 9 IN 0 Q 2 g It r If. co co R T ICc a U, ni al ursea "1/44 c led u6psa - N 0 Y. z a. cn LIJ mei cr O D O E ae ? R r — h 0.4 E ct t:. co D 0 t/o �g C:1 o 15 f U G ce Eoil O Q U (3 6 CO j: O at: Col O) O 03 r CD V I C# L'` sD CS W O O to aG 6 co V, q r-> n o 40 of Land Use % lrnp, StreetWond _ 14Q_ IMIu11i•Famicy i 75 'ParttsVpen Spatz:Undeveloped Area 10 Apartments J$� Single -Farm d enbaI - 4.75 b 2.5 ecru 20 School 55 Comm 90 C Ero tsi m tio -1 CO - To to O. 0 O U 11 la C'stfY cJ 4A fa ICI 1fy WO N up o C to a co r cif o a ei U O 0.4 fag sr! cv yt (N CI g.g g �1 AN g g g a O O O I Parks+OpetI Space 0 r_ g ,q Oic c 9 o C c 0 0 E 3 j g g O,0 O'O O 0 con ri 6 2 t7 re it, O c cic.© 2 eti r A O STORM DRAINAGE SYSTEM COMPUTATION FORM C cr: C C O • E (i Sii February 24, 2017 t O c ;Q. kimtrz!Q Need wick c' 1 r; N .,` cv of C C1i e`) rri I bo N A 2 r tf?'� /u[s j. Allsuaius i= S CV hz N f w t,a E \ 'icon iti r u'7 r i r r- Ili n- tri Ti" 1 lift •!" r r AO1=>01 1u'od u61soo lsi!J t I I I p I I vo HOG 6,., wa jJeo0 aS3r luasawaO3 STORM DRAINAGE SYSTEM COMPUTATION FORM E r Ce tit t�- O f} CsJ 0 tt Mw KJ} C ra teel era C # tJJ 0 C Mcl s d C tie. oOleLosio x.SOd luc+l DETENTION BASIN STAGE -STOKE TABLE BUILDER Pratte. Unto* Finns Paw 'Barth HD.a.hrs . eseaem IPS i.witt a . wren Eaarnpb Zone Catipuration (Retention Pond) Pets* lad Volume Ca_etietbn .itrt hid R).ft ;rip • Erie Weaseled Ms a. Waietr#M19 IAN.* W lens a Wa ann.t fntrwviausnwa • Pan armor 1 nsereleto nal Group A *tnh1npe Plyorolcgar. *1 O+ ip u t 1e-aa WI 0.414 li trD'1L Rani A 'Is Pettit! pertini yarn Wtt wrMepe 1bent* Emi fieryipe CID • 40% Amen De red wocv brain Tows Igo Pneri I as m t r law Rants Nom • tai bye WOW Quota Capture Wla. (wgty) • LAMA atm Rud1 Vows (t►1M) • 11-;r RUrst11 %Mum (P1 " 24$ m4 • Sir Rung Volume (P1 S tan.). toll i ara Who're (Jri a le eta • 35-y'r kurapll Ian (121 •4 i t) 50.0 Rum* Wire (P1 a 4 6 rt,) • 100 -Ps kite Voir' (P1 •5 i trt ) . 410prti+JMyte'd:yl D4 njn,a Veiny. • sty r aerra1F 11!0,4 Delodtota V%liva* • 1Porownalt Met illettoe 'SAµ • 1Py rsaieSO,Dslitn'Yrnlume a Mprwtrnals MR* Denrrtm Vetting . Stapp -Storage Calct*ion 910! r Worse (MeV)a arse 21141lens rE1,4it • mrre 1). • tort* A 14Aurne(iW. twwr . stones t a: 2) e Try DSIS €0 1 Win •- 1ntel Srzttran0e nom (i191r1 = "IP r(ir Dm (ea) •' TttWProgratike DMmkrt pipet t1'4.ar) •. Dap %ttt 1 AO* Grants (tole). '►kip. of Triode tint ago • 5inpee 0$ Veer Dnn Seri Saw) • Own LS - , 14'Wm Rao RAO •. 0214 0144 Qin virt 1164 #906 S-Xt5 411,1 1.!M 1,501 1.61? 0 1.119 2.441 Aar Wier ultra as Shat Jar uric 04Ya Mrs Werttiv r Smiler attryimt retseme aw- U erne* aa..tar e trm ai Surcharge Hirt (/tw) • howl AT Surabitor Volume Lamm (Lai) • sr A 6.nP irse volume was May) • ins Dig ar a man Floor rim) • vial terottQr Nowt Floor attn.) - mar Was at $nn Fiver ()A,taai) • as mut d Nee Plo r V4.v..1 • uea q'Q Vottrea of t5aern Floor (Vtrutsi . Iner Deput ee 1440 assn Nam) • as a Limit wt Maul Bum 11 .1 •urer - 1E Wirt O Vet Dun Waal • use +(t Atm at 11 os lamas Ohtani - ant Ill Whine *ti n Ian Ns.) • a Ira {•aM9111Mi1d sell Basin Vane! (14am) • ale acre. sei ilyttrry VA..' Jiro 'du r'.•t►"y•r311.'0t reset *van 255 2 so Set 4.1111 450 144 456 meat `•Kiwoe mists rte mhos t111Wff,4• strati Dort Amp "�'� n Utibtitli 6At'Igtll Yamkr ' onsets sk-it.lretPet .I� /nNa aPa ttcr400el - a 00 - - - a Dodo - OS - - 144 0.001 in 0 001 - too - - - 1 el 0 003 107 0 t)0f - t4C - - 11145 CI 274S I 5.0142 R13b - - - - 40.0]1 0.91Y . 31145 0.719 - 1.pp - - 01.4,1E a 1.410 12.077 1.AEd — 5.44 - -- - 461l t.a.06 144.47! ] RSA - 4.04 - - - 77,444 1.666 114011 4.01 - r 04 - +4.442 1.401 211104 51145 - a ' - - - - —.. - - a - - - - a - � r - M. - - .. - - + - - -_ - - - a - - - r = - a - - - - S a - SS — a a mow a .. — — a ,. — — ,. — a I a a as- r a Wit• a a _ a a a a a a — a a as a - — w a a - — a a a a a — a a a — a a a a a tiDa rtereor4 v7 OA tsim ne na peed upthopo, aeon Example ZOne Configuration (Retention Pond) Detention Basin Outlet Structure Design Project: Union Farms Pond Basin ID: Basins 1 and 2 Zone 1 (WQCV). Zone 2 (EURV) one 3 (100 -year) Stage (ft) Zone Volume lac -ft) Outlet Type 2.25 0.2.14 Orifice Plate 2.79 0.322 Orifice Plate 434 2 115 Wetrl&Ptpe (C,.rcui.ar) User Input: Orifice at Underdraiet Outlet (typically used to drain WQCV in a Filtration RIM) Uftdertiraln Orifice Invert Depth = N/A ft (,distance below the filtration media surface) Underdrgin Orifice Diartleter= N/A Inches User Input Orifice Plate with one or more orifices or Elliptical Invert of Lowest Orifice Depth at top of Zone using Orifice Plate Orifice Plate: Orifice Vertical Spacing f Orifice Plate: Orifice Area per Row = 2.651 Slot Weir (typically used to drain WQCV and/or EURV in a sedimentation BMPI 0,00 2.80 N/A N/A ft (relative ft (relative inches inches to basin bottom at Stage = Oft) to basin bottom at Stage = 0 ft) User Input: Stages and Total Area of Each Orifice Row (numbered from lowest to highest) Row 1 (required) Row 2 (op: onat) Stage of Onfice Centroid (ft) orifice Area (sq. Inchos) Stage of Orifice Centroid (ft) Orifice Area (sq. inches) 0.00 0.35 Row 9 (optional) User Input: Vertical Orifice (Circular or Rectangular) Invert of Vertical Orifice = Depth et top of Zone using Vertical Orifice = Vertical Orifice Diameter = 11.50 0.50 Row 10 (optional) Row 3 (optional) too 0,60 Row 11 (optional) Row 4 (optional) 1.60 0.70 Total Calculated Parameters. for Underdrain Underdrain Orifice Area = Underdra}n Orifice Centroid ft ` feet Calculated Parameters for Plate WQ Orifice Area per Row = Elliptical Haif-Width a Elliptical Slot Centrold Elliptical Slot Area = N/A N/A N/A N/A ft' feet feet Row 5 (optional) 2.00 1180 Row 6 (optional) 2.50 Row 7 (optional) Row 8 (optional) 0.80 Row 12 (optional) Row 13 (optional) Row 74 (optional) Row 16 (optional) ROW 1b (optional) Not Selected Not Selected N/A N/A N/A N/A N/A N/A User input: Overflow Weir (Dropbox) and Grate (Flat or Sloped) Overflow Weir Front Edge Height. Ho = Overflow Weir Front Edge Length = Overflow Weir Slope = Hartz. Length of Weir Sides =- Overflow Grate Open Area % Debris Clogging % = Zone 3 Weir Not Selected 2-$t) N/A 20,00 N/A 0.00 N/A 20.00 N/A 70% N/A 50% N/A ft (relative to basin bottom at Stage =Oft) it (relative to basin bottom at Stage =0 ft) inches Calculated Parameters for Vertical Orifice Vertical Orifice Area = Vertical Orifice Centrold = Not Selected i--- Not Selected N/r1 N/A N/A N/A I feet ft (relative to basin bottom ;at Stage =4 ft) feet H:V {enter zero for flat grate) feet X. grate open area/total area User Input: Outlet Pipe w/ Flow Restriction Plate (Circular Orifice, Restrictor Plate, or Rectantul Depth to Invert of Outlet Pipe = Circular Orifice Diameter = Zone 3 Circular -. Not Selected 0.00 N/A 600 N/A User input: Emergency Spillway (Rectangular or Trapezoidal) Spillway Invert Staged Spillway Crest Length = Spillway End Slopes = Freeboard above Max Water Surface = 6.00 100 DO 4.00 0.00 Routed Hydrograph Results Design Storm Return Period One -Hour Rainfall Dopth On) r Calculated Runoff Volume (acre -ft) _ OPTIONAL Override Runoff Volume (acre-lt) _ inflow Hydrograph Volume (acre -ft) Preduverleprnent Unit Peak Flow, q (cln/aere) _ Pradeve element Peak O (cis) _ Peak Inflow O (ells) _ Peak Outflow 0 (cis) _ Ratio Peak Outflow to Precteveiopment O _ Structure Controlling Flow - Max Velocity through Greta 1 (fps) Max Velocity through Grate 2 (fps) _ Time to Or }n 9T% of Inflow Volume (hours) Time to Drain 9994 of Inflow Volume (hours) _ Maximum Ponding Depth (it) _ Area at Maximum Por%ling Depth (acres) Maximum Volume Stored (acres -4t) = wacv Calculated Parameters for Overflow Weir Height of Grate Upper Edge, He Over Flow Weir Slope Length Grate Open Area / 10O-yr Orifice Area - Overflow Grate Open Area w/o Debris Overflow Grate Open Area w/ Debris _. ft (Distance below basin bottom at Stage : 0 to Inches ft (relative to basin bottom at Stage = 0 ft) feet H:V feet Et1RV 2 Year 033 0.214 1,07 2.05 5 Year Zone 3 Welr Not Selected 2.90 tW/A 20.00 N/A 1426.03 N/A 280,0U N/A 140.00 N/A feet feet should be >4 fta ft2 Calculated Parameters for Outlet Pipe w/ Flow Restriction Plate Outlet Orifice Area a Outlet Orifice Centroid Half -Central Angle of Restrictor Plate on Pipe = Zone 3 Circular Not Selected 0 20 N/A _ - 0.25 N/A N/A N/A Calculated Parameters for Spillway Spillway Design Flow Depth= Stage at Top of Freeboard = Basin Area at Top of Freeboard = 0.55 feet h _ 6,55 1.74 feet acres feet radians 10 Year 25 Year 2.50 0.536 0.734 0.215 0.00 0.536 0.00 0.0 0.0 1.289 330 4.00 2.177 3.184 50 Year 450 100 Year 5.'40 3 96 0,734 1, 290 0.01 0.19 0.2 3,1 4.9 0.1 124 0.1 N/A Plate N/A Plate N/A N/A N/A N/A 16,6 29.1 is 1,7 39 41 70 73 N/A 0.5 Outlet Plate 1 0.00 N/A 2.1]9 5.205 500 Year 6 0 6.355 3.186 3.962 5,206 0.37 0.85 1.10 6.1 13.9 18.0 .1.40 6.360 1.98 23.0 49.0 72.1 1.8 - 2.0 89.8 2.1 118.3 2.26 32.5 144.6 Outlet Plate 1 0.0 NEL 72 71 03 0.1 0.1 Outlet Plate 1 0.0 N/A 71 Outlet Plate 1. 0.0 N/A 71 76 78 2,21 2.76 0.40 0.75 0.200 2.90 3.39 81 Outlet Plate 1 0.0 N/A 72 0.1 Outlet Plate 26.4 0.$ Splllur4y 0.0 0,0 N/A 73 N/A 85 87 91 0.85 1.11 4.04 4,71 1.41 0.511 0.622 1.104 1 927 5,21 5.96 6.19 130 1.56 1.66 1.69 2.918 3.668 4.878. 1263 Union Farms Development Guide Traffic Narrative Development Guide Prepared for: Andrew Batson Union Farms Lit 12656 Waterside Lane Longmont, CO 80504 Prepared by: • Matrix. ti ,4 DESIGN GROUP lit AN EMPLOYEE -OWNED COMP'R;,N 1601 Blake Street, Suite 200 Denver, Colorado 80202 (303) 572-0200 fax (303) 572-0202 February 2017 Union Farms Development Guide Traffic Narrative .. Describe how many raundtrips/day are expected for each vehicle type: passenger cars/pickups, Tandem Trucks, Semi-Truck/Trailer/RV (roundtrip = 1 trip in and 1 trip out of site) Passenger cars/Pickups = 120 Roundtrips per day (12 lots, being conservative 10 trips per day per lot) Tandem Trucks = 1 Roundtrips per day (1 delivery per day or trash pickup) Semi-Truck/Trailer/RV = 0 trips per day Describe the expected travel routes for site traffic. The site will accessed from State Highway 66. The travel routs for this site include the site road out the Highway 66 then west to County Line Rd or east to 1-25. 3. Describe the travel distribution along the routes. 66% of the traffic is expected to head east on highway 66 toward 1-25 and the other 33% isexpected to head west on Highway 66 toward County Line Rd. Most people are expected to take 1-25 to get to their work so going east on highway 66 is expected to get traveled the most. 4. Describe the time of day that you expect the highest traffic volumes from above. Expected peak hours are in the morning from 7-9 and at night from 4-6. With the PM being the most traveled time. Attached: Traffic Counts February 2017 Matrix DESIGN GROUP API EMPLO7tE OWNED €G.MRn4N Page 1 of Single -Family Detached Housing (210) Average Vehicle Trip Ends vs: Dwelling Units On a: Weekday Number of Studies: Avg. Number of Dwelling Units: Directional Distribution: 355 198 50% entering, 50% exiting Trip Generation per Dwelling Unit Average Rate Range of Rates Standard Deviation 4 52 431 -2185 2 05 Data Plot and Equation T = Average Trip Ends rl' X44 I x 1 t r f 1 d X r Number of Dwelling Units 1000 2000 3000 >( Actual Data Points Omitted Data Points Fitted Curve Average Rate Fitted Curve Equation: Lncr) 0.92 Ln(X) + 2.72 R2 - 0.95 Tr* Ger,ervk'a. ITE-TGM 9th Editin https://otisstrffic.eomltemp/e10006eb47584e8ab3c015d02f2a7a60/6996828576d44b8eb... 12/14/2016 Page 1 of Single -Family Detached Housing (210) Average Vehicle Trip Ends vs: Dwelling Units on a: Weekday, Peak Hour of Adjacent Street Traffic, One Hour Between 7 and 9 a.m. Number of Studies: 292 Avg. Number of Dwelling Units: 194 Directional Distribution: 25% entering, 75% exiting Trip Generation 3er Dwellinc i nc Unit Average Rate Range of Rates Standard Deviation 0 75 0 33-227 027 Data Plot and Equation Average Trip End 3000 2000 1000 *8 x ti r S. • e x r 1 1000 x x x J Fr s a, r t r 9. r l OP r a or r r a. r r+ X Y Number of Dwelling Units X Actual Data Points a Omitted Data Points 2000 3000 Fitted Curve Average Rate Fitted Curve Equation: T = 0.7(X) + 9.74 = 0.84 -r-or e'r* ,. rTE TG1a 9Nh Edition https://otisstraffic,com/term/e 10006eb47584e8ab c01. 5d02f2a7a60/75395f127e6548d78... 12/14/2016 Page 1of1 Single -Family Detached Housing (210) Average Vehicle Trip Ends vs: on a: Number of Studies: Avg. Number of Dwelling Units: Directional Distribution: Dwelling Units Weekday, Peak Hour of Adjacent Street Traffic, one Hour Between 4 and 6 p.m. 321 207 63% entering. 37% exiting Trip Generation per Dwelling Unit Average Rate flange of Rates Standard Deviation 1 00 042-298 031 Data Plot and Equation T = Average Trip Ends 77117 2O00 1000 e0 X = Number of Dwelling Units 1000 X Actual Data Points A Omitted Data Points Fitted Curve Equation: Ln(T) = 0.9 L.n(X) + 0.51 i Fitted Curve 2000 r I Average Rate R2 n 0.91 I 3000 Tr Gam. 6Tt-TG M 9th Edition bttps://otisstraffic.co ft mp/e1000 eb47584e8ab3c015d02f2a7a60/f6661 e5e3d243 7a7„. 12/14/2016 Hello