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HomeMy WebLinkAboutCorrespondence D7 - (Go Grifill14 CITY OF COLLEGE STATION August 14,2007 Joe Schultz,P.E.,Engineering Manager Civil Development,Ltd. P.O.Box 11929 College Station,TX 77840 Dear Joe, In response to your request dated August 7th for a "special design" for the proposed minor collector to be constructed with the Summit Crossing Subdivision Extension, I have no objection to the proposed deviation of the minimum radius of 430 feet listed in the Uniform Design Guidelines to a radius of 200 feet at that location. As you are aware the design speed of a minor collector is 35 miles per hour. The close proximity to Highway 30 to this 200 foot radius should provide slower speeds and help mitigate any issues of the tighter radius. Concerns have been raised that the less than 90 degree angle that the roadway makes at the Highway 30 intersection could provide compliance issues with the required sight triangle. Please ensure that the sight triangle requirements are met. Concerns have also been raised about roadway construction possible encroachment into the stream wetland area and the use of retaining walls along the roadway. Retaining walls and the subsequent drop-off could create a public hazard situation. Also retaining walls and the adequate construction of these and the roadway is a concern to the City of College Station related to future maintenance issues. These issues can be reviewed with the submittal of plans. Should you have any questions,please let me know. 'ncerely, Robert W.Mosley,P.E. City Engineer c: Alan Gibbs, Senior Assistant City Engineer Troy Rother,City Traffic Engineer CIVIL DEA CIVIL ENGINEERI \J(i) P.O. Box 11929 • College Station, Texa LwillAvs cYe (Jr August 7, 2007 k'` S WI 1441 • NAIA - Bob Mosley, P.E. '' 55 l City Engin ��-- ?\ City of � ollege Station . 26 Texas Avenue South /College Station, TX 77840 ✓'� RE: Request for Exception to De; Summit Crossing Subdivisio College Station, Texas Dear Mr. Mosley: The proposed Summit Crossing Subdivision development will be required by the Thoroughfare Plan to construct a minor collector street from Harvey Road to the north limits of the development. It has been requested by TxDOT staff and City of College Station Development Services staff that the proposed minor collector street line up across Harvey Road from the existing Pamela Lane. TxDOT and Development Services have made a recommendation to decrease the radius at the start of the street so the stream could be avoided. The attached sketch shows the alignment of the minor collector street proposed by the Developer. The proposed alignment deliberately avoids crossing and disturbing a significant portion of the existing stream channel, as well as the existing large trees and other dense vegetation located along this portion of the stream, which is planned parkland dedication. In order to avoid the stream in this area, the design centerline radius of the street is 200', which is less th. . i - 0' minimum radius r-•uired by the design guidelines. The Developer requests an exception to the standard in the Unified Design Guidelines for minimum street centerline radius for this street. Due to its location near the intersection with Harvey Road, vehicle speed will be low in this portion of the street. If necessary, posting of a lower than normal speed limit and/or superelevation of the pavement section can be utilized to enhance the safety of the traveling public. This development is a Planned Development District (PDD). A goal of a PDD is to encourage development that is sensitive to the native environment. The stream area on this property across from Pamela Lane contains a significant portion of the dense vegetation located in the development. It is this area that is most desired to remain undisturbed. Construction of the street as shown will allow development of the stream I 647 1nAn . 0 area as a park without the street bisecting the area in which the Parks Department and Developer are trying to preserve. Please give me a call at(979) 764-7743 if you have any questions. Sincerely, i Jo-(Schultz, P.E. Engineering Manager cc: Ken Fogle Alan Gibbs, P.E. Nil_ Ke vi VELOPMENT Ltd. 07- (Go CIVIL DE , CIVIL ENGINEERING&DESIGN-BUILD SERVICES P.O. Box 11929 - College Station, Texas 77842 - Phone: 979-764-7743 • Fax: 979-764-7759 August 7, 2007 Bob Mosley, P.E. ,Z-- City Engineer City of C ege Station 2613 exas Avenue South ege Station, TX 77840 RE: Request for Exception to Design Standards Summit Crossing Subdivision College Station, Texas Dear Mr. Mosley: The proposed Summit Crossing Subdivision development will be required by the Thoroughfare Plan to construct a minor collector street from Harvey Road to the north limits of the development. It has been requested by TxDOT staff and City of College Station Development Services staff that the proposed minor collector street line up across Harvey Road from the existing Pamela Lane. TxDOT and Development Services have made a recommendation to decrease the radius at the start of the street so the stream could be avoided. The attached sketch shows the alignment of the minor collector street proposed by the Developer. The proposed alignment deliberately avoids crossing and disturbing a significant portion of the existing stream channel, as well as the existing large trees and other dense vegetation located along this portion of the stream, which is planned parkland dedication. In order to avoid the stream in this area, the design centerline radius of the street is 200', which is less than the 430' minimum radius required by the design guidelines. The Developer requests an exception to the standard in the Unified Design Guidelines for minimum street centerline radius for this street. Due to its location near the intersection with Harvey Road, vehicle speed will be low in this portion of the street. If necessary, posting of a lower than normal speed limit and/or superelevation of the pavement section can be utilized to enhance the safety of the traveling public. This development is a Planned Development District (PDD). A goal of a PDD is to encourage development that is sensitive to the native environment. The stream area on this property across from Pamela Lane contains a significant portion of the dense vegetation located in the development. It is this area that is most desired to remain undisturbed. Construction of the street as shown will allow development of the stream a I l0 : no \C 0 area as a park without the street bisecting the area in which the Parks Department and Developer are trying to preserve. Please give me a call at (979) 764-7743 if you have any questions. Sincerely, Jo Schultz, P.E. Engineering Manager cc: Ken Fogle Alan Gibbs, P.E. Summit Crossing Master Plan (07-160) This item is for a Master Plan for Summit Crossing. The majority of the property is currently zoned PDD Planned Development, allowing for both townhomes and duplexes. A portion of the property to the east is zoned for general commercial uses. r : : • . - ` . ' - - -'• -- h- ..o • , • : • . i - . '- : --- . 11. - _ . _ I. I. i - , - a' 'e•'• al • - . a : n . •d e. to - m._ � .r�si5f'tk rtjc. The density of the subdivision wi be in compliance with that of Single-Family Residential High density (7-9 du/acre). MASTER PLAN: The proposed land uses include 7.37 acres of commercial, 89.76 acres of high-density single-family residential (both duplexes and townhomes), 8.8 acres of public parkland, and 3.04 acres of additional open space. The Master Plan also includes the development of two minor collector roadways, the extension of Pamela Lane and the extension of Hicks Road. CONCEPT PLAN: As an older PDD zoning, the Concept Plan was reviewed and approved by the Design Review Board...and can be seen on your screens. \,9 P &E Cf ♦9 0 Wok 0-1 \ i- us Showvl on tY 0- - pl�t,(1 — � vz UaoLivr wee 1051(\ t"M t58' cm oWier -I-wpropvsea +---C-ares show - --\_cut-U-eAa \5s das tqvlaioi) ccDçca +--��-e imus+ al��n wl raa�.(a � CoNhav\cR, 1).4 LuP ? M l b d o nol-clr� loc d ra,um ¶1m) peAr i n(//1 1\01,01_ 1, \ottAG bbeb' ndi)-)561321_ M\zir - -_ I'�wt too r)-NcapUlf) or -qccawccc,1? fropbs(J? R-6w? L4 - tp5u/rvait dal-ar,2 (17, mciAuabni-- talouln pfitea po( r\ w &\L°° V * CIVIL DEVELOPMENT, Ltd.* R `ci„„D CIVIL ENGINEERING&DESIGN-BUILD SERVICES C S TRANSMITTAL 13?-ii� $r2,1eq Date: July 13, 2007 To: Jennifer Prochazka Development Servi s SI s ,. C City of College Station �� �-� � From: Joe Schultz, P.E. Civil Development, Ltd. -rlo om r f P.O. Box 11929 /�,, `-�-e College Station, Texas 77842 6)' 'N Y 1 - ��6 1 ti Phone: (979) 764-7743 A ,�- recd joe@cdlbcs.com /"I Subject: Revised Master Plan W Summit Crossing �_ G� College Station, Texas ( tioF w-L �� k11 tL Remarks: Attached are 16-11x17 copies al,.. 14I Plan for the above-referenced project. Also alfa... the Staff Review Comments No. 1. Let me know if you need anything else or have any questions.