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Home My WebLink AboutFOX GROVE - Filed GC-GENERAL CORRESPONDENCE - 2016-08-19�f 6 NORTHERN ENGINEERING May 30, 2014 City of Fort Collins Development Review Tyler Siegmund 281 N. College Ave. Fort Collins, CO 80524 (970) 221-6573 Fox Grove Filing One Utility Plans Variance Request for LCUASS Table 7-3 Minimum Intersection Spacing Variance Description: Project # 335-008 This is a request for Variance to Standard contained in Section 7.4.1 of the Fort Larimer County Urban Area Street Standards which pertains to the minimum distance between intersections. Variance to this standard will allow the intersection of three local streets to intersect a Minor Collector with a distance of 230' and 105' distance between intersections. —•� ----I Technical Design Criteria: Table 7-3 in the Larimer County Urban Area Street Standards indicated a minimum distance of 250' for unsignalized intersections along a Minor Collector. Variance Justification Criteria: The Professional Engineer must determine and state that the variance will not be detrimental to the public health, safety and welfare, will not reduce design life of the improvement nor cause the Local Entity additional maintenance costs. The proposed plan (as varied) must advance the public purpose of the standard sought to be varied equally well or better than would compliance with such standard. Identifying the Issue: The proposed Carriage Parkway alignment ties directly to existing features northeast of the site making it the controlling horizontal geometry on site. Carriage Parkway makes a large sweeping bend starting from the Northeast corner heading south to make a perpendicular intersection with the southern property boundary, thus allowing the future (minor collector) connection between Mulberry and Prospect and connecting the future development to the South. The southeast corner of the site is thus dissected into a wedge. This area requires an access point emanating from Carriage Parkway. In order to maintain the most amount of green space and accessibility, two access points 301 N. Howes Street, Suite 100, Fort Collins, CO 80521 1 970.221.4158 1 www.northernengineering.com The Fort Collins Master Street Plan shows Carriage Parkway being extended to the south to make the connection to Prospect Road. Discussions regarding its future terminus also have been to extend the roadway to the west to connect to the I-25 frontage road. The intersection of Carriage Parkway and SH 14 is controlled with an 8-phase traffic signal maintained and operated by the Colorado Department of Transportation. The other potential access would be the use of Sun Chase Road through the Sun Flower Development. However, this is an issue that will need further discussion. Sun Chase is a 32-foot roadway that makes a fairly direct connection from Carriage Parkway to SH 14. However, Sun Flower is a gated community and Sun Chase appears to be a private roadway. At the time of the site visit, the Sun Chase — look south gates were open and not monitored and driving through the neighborhood didn't present an issue. The intersection of Sun Chase and SH 14 is a limited movement (RI/RO) controlled by a raised median. Future discussions on how to prevent cut -through traffic will more than likely need to take place. The I-25 frontage road connects Prospect Road to State Highway 14. The roadway has a 26-foot cross section and a posted speed limit of 30 mph on the southern portion and a 45 mph speed limit on the northern portion. The pavement is in good condition. From active modes of transportation perspective, the area is not served or connected to any on -street bikes lanes or multi -use trails. The area is also not served by any transit system. Trip Generation Trip generation rates for the proposed project are based on the Trip Generation, a Edition manual prepared by the Institute of Transportation Engineers. The manual presents data from numerous trip generation studies for a variety of land uses from across the country. ITE Code 220, apartments and Code 210, single family, was used in this analysis. There were no trip reductions assumed since the area is not served by transit, bike facilities, or nearby major traffic generators. Table 1 below summarizes the proposed trip generation for the project. For the entire project, during the morning peak hour, 86 trip ends can be expected and 117 trip ends can be expected from the project during the afternoon peak hours. ELB Engineering, LLC 5401 Taylor Lane Fort Collins, CO 80528 Phone: 970-988-7551 ELBEngineering@lpbroadband. net Table I — Trip Generation Estimates Trip Distribution Trip distribution is generally based on either a gravity model or engineering judgment. In this case, engineering judgment is all that is required. Since the project is located on the eastern boundary of the Fort Collins Urban Area, nearly all the trips produced by the project will be heading west. When the west moving traffic comes to I-25, the majority of traffic will either continue west on SH14 or divert to southbound I-25. When Carriage Parkway is extended, there will be a fairly even split of traffic heading west and south. Conclusion From a traffic engineering perspective, the Fox Gove development will not present any traffic related issues to the existing roadway network. There is sufficient capacity to handle the new traffic. The development is typical residential development surrounded by other residential development with roadway standards designed to accommodate high levels of service. An intermediate level TIS with capacity analysis of key intersections will be submitted with the PDP. Please let me know if you have any questions or if additional information is required. ELB Engineering, LLC 4 5401 Taylor Lane Fort Collins. CO 80528 Phone: 970-988-7551 ELBEngineering@Ipbroadband.net APPREARX ELB Engineering, LLC 5401 Taylor Lane Fort Collins, CO 80528 Phone: 970-988-7551 ELBEngineering@lpbroadband.net Chapter 4 - Attachments Attachment A Transportation Impact Study Base Assumptions Project Information Project Name,, G� D Project Location TIS Assumptions Type of Study Full: edi Study Area Boundaries North: South: East: 7 a Rest: Study Years Short Range:, I Long Range: Future Traffic Growth Rate --- Study Intersections 1. All access drives 5. 6. �- 7. 4. 8. Time Period for Study A :00-9-M-' P : 4:0"M' Sat Noon: Trip Generation Rates Trip Adjustment Factors Passby: _ Captive Market: Overall Trip Distribution �:� �SEE ATTACHED SKETCH Mode Split Assumptions Committed Roadway Improvements +-►C= Other Traffic Studies Areas Requiring Special Study //`?awyo , s �.-ss. ��• st•� k,/e. f, Date: Traffi, Local Page 4-34 LaMw County urban Arse Strout SWfdKft — R"Nditd and Raagcbd April 1. 2007 Adopted by tsukw County, City of Loveland. City of Fort COMM R.P . NORTHERN ENGINEERING are proposed onto Carriage Parkway. One access from Kit Den Drive and one access from Tod Drive. The proposed access from Kit Den Drive is located between the proposed Fox Grove Drive and the existing Vitala Drive. The total spacing between Fox Grove Drive and Vitala Drive is 335'. Therefore, it is impossible to get intersection spacing of 250' between all 3 roadways. The access to Kit Den Drive from Carriage Parkway was designed in order to accommodate the LCUASS standard 7.4.1.2.a Minimum Tangent Length. In order to abide by this standard the access to Kit Den was effectively pushed south to within 105' of Fox Grove Drive. Justification: Many options were considered for this roadway. One option was to not have an access to Carriage Parkway at Kit Den, thus making Kit Den and Tod Drive a cul-de-sac. This option would utilize the area that was set aside for green space/detention, thus replacing green space with asphalt. The adjacent neighborhoods' most prominent comment concerned the amount of green space within the proposed Fox Grove. Being conscious of the comments of the adjacent neighborhoods, it was deemed that this was not the best option. Another option was to connect Kit Den Drive to Fox Grove Drive. This would satisfy all LCUASS criteria, but would also decrease green space and/or create two smaller, disconnected areas of green space. The current proposal does not abide by the intersection distance requirement, but it is not expected to be detrimental to the public health, safety and welfare of the community. Firstly, due to the horizontal locations of the streets, there are no conflicting left-hand turns. Secondly, since all three intersections are T-Intersections, there are only a limited amount of intersection movements and very few conflicts. Thirdly, this layout provides the largest amount of continuous green space and it is the most accessible to everyone. Communities benefit greatly from larger green spaces. Please see attached exhibit showing the proposed intersection spacings. incerely, �t_epAanie J. o s Professional Engineer 301 N. Howes Street, Suite 100, Fort Collins, CO 80521 1 970.221.4158 1 www.northernengineering.com Transports tfon Eug�aeennB �u t}o>'s Memorandum TO: Mr. Les Kaplan, Imago Enterprises Mr. Ward Stanford, Traffic Engineer FROM: Eric L. Bracke, P.E., P.T.O.E DATE: July 25, 2013 40•R • G/s, T rJ�4: J�ENCE 9q•�'9fi SUBJECT: Fox Grove; Overall Development Plan, TIS Memorandum This memorandum addresses the requirements of a transportation impact assessment for the Overall Development Plan of Fox Grove. The project is located in East Fort Collins, east of I-25 and south of Mulberry (SH 14). The project entails two phases of residential development. The first phase will be 83 units of single-family detached housing. The second phase will follow in a yet to be determined time frame of 76 units of multi -family. A Preliminary Development Plan will be submitted shortly after the ODP and accompanied by an Intermediate Level Transportation Impact Study. The exact location of the project is displayed in Figure 1. The project is directly south of the Sun Flower Retirement Neighborhood and directly west of the Clydesdale Development. Short-term access to the site will be via Carriage Parkway. Long-term access will extend Carriage Parkway to the I-25 frontage road located a short distance west of the site. A scoping form was sent to the City Traffic Engineer to determine the scope of the transportation impact study. It was agreed that the project will have relatively minor (if any) impact to the surrounding street system and that a memorandum would be sufficient to address the related transportation impacts at the ODP level. Capacity analyses would not be required and a trip generation estimate would be required. The scoping form for the transportation study can be found in Appendix A. F,LR Engineering. LLC 5401 Tin-lor Lane Fort Collins. CO 80528 Phone: 970-988-7351 EL.REngineeringrgllpbroodband. net O � Site •r == hopre 1; I oc*mon Map Existing Conditions The actual site is currently in agricultural use. Directly to the north of the site is the Sun Flower neighborhood and is advertised as an "active retirement community". The Clydesdale neighborhood is to the northeast of the site, connecting via Carriage Parkway and is a single family detached housing neighborhood. Carriage Parkway is a collector roadway, approximately 50 feet in width with no striping (bike lanes, center stripe, etc...). The pavement is in good condition and has a posted speed limit of 30 mph. This roadway will be the principle access to the development until such time it is extended. ELH hngineering. LLC• 5401 Taylor lane Fort C'oilins, CO 80528 Phone: 970-988-7551 ELBF.ngineerin glphrnodhand.net II a P au 02013 G009le EM Chapter 4 — Attachments Attachment A Transportation Impact Study Base Assumptions Project Information Project Name Project Location TIS Assumptions Type of Study Full: e-7edi `. Study Area Boundaries North: South: East: � c% West:1 Study Years Short Range:; ( Long Range: Future Traffic Growth Rate Study Intersections 1. All access drives 5. 6. 3 --• 7. 4. 8. Time Period for Study A 7:00--9:D0� PM: 4:00-6.00 Sat Noon: Trip Generation Rates --'- Trip Adjustment Factors Passby: _ •` Captive Market: —" Overall Trip Distribution - _ -SEE ATTACHED SKETCH j 7u Mode Split Assumptions Committed Roadway Improvements r..ks,- ar. Other Traffic Studies Areas Requiring Special Study Meiyv , a 04'ss.ari i 4ee,4 Date: Traffic Gocal Entity Engineer: l r � 7/.1 S Page 4-34 Lorimer County Urban Area Street Standards — Repealed and Reenacted April 1, 2007 Adopted by Larimer County, City of Loveland. City of Fort Collins 72.0 . t NORTHERN ENGINEERING Overall Drainage Report Date: August 7, 2013 ADDRESS: PHONE:970.221,4158 WEBSITE: 200 S. College Ave. Suite 10 wwanorthernengineering.com fort Collins, C0 8D524 FAX: 970.221,4159 Project: Fox Grove Overall Development Plan Fort Collins, Colorado Attn: Mr. Wes Lamarque Fort Collins Utilities 700 Wood Street Fort Collins, Colorado 80524 Mr. Lamarque: This letter report accompanies the submittal for the Fox Grove Overall Development Plan (ODP). Specifically, this letter report serves to document the overall drainage impacts associated with the proposed Fox Grove Development. The proposed development site is located southeast of the 1-25/Mulberry (State Highway 14) interchange in Fort Collins, Colorado. The site is situated along the existing 1-25 east frontage road, just south of the existing Interchange Business Park development. The overall Fox Grove site is roughly 36 acres in size. A portion of the site is encroached by the FEMA regulatory Boxelder Creek 100-year Floodplain per FEMA Map Number 08069C1003G, dated May 2, 2012. Accordingly, the site design must satisfy the standards of Chapter 10 of City Code. The proposed development site is in the City of Fort Collins Boxelder Creek Basin. Detention requirements for this basin are to detain the difference between the 100-year developed inflow rate and the historic 2-year release rate. However, if it can be shown by basin modeling that undetained flows from the developed site would result in no increase in peak discharge within Boxelder Creek, the detention requirement would be waived. No modeling has been done at the present, but may be considered as this project progresses. The current submittal does show proposed on -site detention. Previous submittals for the Fox Grove site are briefly described below: • CLOMR Request for Lee MLD, Northern Engineering, September 2007. This CLOMR was submitted to FEMA in 2007 and approved in November 2008. The proposed work shown with the CLOMR included both Lot 1(west of Boxelder Creek) and Lot 2 (east of Boxelder Creek) of Lee MLD. The CLOMR included proposed grading along the east bank of Boxelder Creek, and proposed revisions to the regulatory floodplain and floodway. Due to land development market conditions at the time of the CLOMR, the project was placed on hold. The project did not move to construction, and no LOMR was submitted for the project. The proposed Fox Grove site will drain into on -site detention ponds which will release into the Boxelder Creek, located just west of the site. We do not currently propose any release to the east. All water quality treatment requirements and LID requirements will be satisfied with the proposed development. Means of providing for these requirements will be worked through at the Preliminary and Final stages of the design process. In summary, this Overall Drainage Report letter adequately addresses any potential stormwater changes associated with the proposed development. In general, there are no significant changes proposed at a major drainage level. The ODP complies with the governing City of Fort Collins Master Drainage Plans, and the previously approved drainage plans specific for the subject property. Please feel free to contact me with any questions you may have. Sincerely NORTHERN ENGINEERING Aaron Cvar, PE Project Engineer 2 FlBfadineering, LLC - Tran"Hation fudineenng Solutions Memorandum TO: Mr. Les Kaplan, Imago Enterprises Mr. Ward Stanford, Traffic Engineer FROM: Eric L. Bracke, P.E., P.T.O.E DATE: March 4, 2014 SUBJECT: Fox Grove; Overall Development Plan, TIS Memorandum This memorandum addresses the requirements of a transportation impact assessment for the Overall Development Plan of Fox Grove. The project is located in East Fort Collins, east of I-25 and south of Mulberry (SH 14). The project entails two phases of residential development. The first phase will be 66 units of single-family detached housing. The second phase will follow in a yet to be determined time frame of 49 single family units. A Preliminary Development Plan will be submitted shortly after the ODP and accompanied by an Intermediate Level Transportation Impact Study. The exact location of the project is displayed in Figure 1. The project is directly south of the Sun Flower Retirement Neighborhood and directly west of the Clydesdale Development. Short-term access to the site will be via Carriage Parkway. Long-term access will extend Carriage Parkway to the I-25 frontage road located a short distance west of the site. A scoping form was sent to the City Traffic Engineer to determine the scope of the transportation impact study. It was agreed that the project will have relatively minor (if any) impact to the surrounding street system and that a memorandum would be sufficient to address the related transportation impacts at the ODP level. Capacity analyses would not be required and a trip generation estimate would be required. The scoping form for the transportation study can be found in Appendix A. ELB Engineering, LLC 5401 Taylor Lane roll Collins, CO 80528 Phone: 970-988-7551 EL BEngineering@lpbroadband. net tints- ? rirt coinrs Gues?I-t:tt:se �» & � St �'�rntnr ?,r. Sriitez FariCotliac � tH1tr4L*enyr a.;a ,ia� i^YF �nlitrs '� tSt �" — oL, Site 4 �Ot1YsiC!�" �, X r;•cv; Calcuaro tekx�me Crater - Naretraf Area Put of Er?ry N�rthem Fic{ure I; Location Map Existing Conditions The actual site is currently in agricultural use. Directly to the north of the site is the Sun Flower neighborhood and is advertised as an "active retirement community". The Clydesdale neighborhood is to the northeast of the site, connecting via Carriage Parkway and is a single family detached housing neighborhood. Carriage Parkway is a collector roadway, approximately 50 feet in width with no striping (bike lanes, center stripe, etc...). The pavement is in good condition and has a posted speed limit of 30 mph. This roadway will be the principle access to the development until such time it is extended. ELB Engineering, LLC 5401 Taylor Lane Fort Collins. CO80528 Phone 970-988-7551 ELBEngineering@,Ipbroadband.net Mutbeup �? u�nai "x CPma tery WO13 G000e -