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KFC & Pizza Hut-AG 890523Rev. 4-24-89 AGENDA REQUE,%q' FORM ~' ........ " CITY COUNCIL MEE']~ING May 23, 1989 l'r~ NO._~ ~..~ ITEM CAPTION: To consider request for a varianc~ to Appendix A, Streets and Alleys; B Engineering Design Median Openings (Page 9) to place a m~ian opening 9n Denton Tap Road between two (g) previously designed openings south of Sandy Lake/Road, requ~ste~ by Stephen C. Hundley, WA, of. ~.CI~Arfhikegts, Inc. and James M. ~%urtz, ~.E...-6n beh~lffof gtr. 17.~. ~.r~nger ...... . /~/~- ' - '// ///~'? 'f CTAFF REP ' Kevin Peiffer, P.E., SUBMITTED B.: ' .?//L4..f/J~f ZZ, //,/ ~¥'1. ~ . '' . . - ~ector'W S$/$Ua~6re)/ U,an, mc. / ~ ~ 0TREIt REP.: Applicants ': / DATE: May 15, 1989 LWALUATION OF L?EM: The applicant requests an additional median opening be designed and installed on the Denton Tap Road C.LP. Project to accommodate an entrance to the Pl2n,ed Development approved with a Preliminary Plat on July 14, 1987 (see attached Preliminary Site Plan, Sandy Lake Crossing). Please refer to Ginn, Inc. letters (attached) dated March 27, 1989 and April 17, 1989 for Staff's evaluation. Attached is a copy of the Exhibit submitted to Staff. Since early March, when the applicant approached Staff with this request, the applicant does not see any concern at all for the short distances that would result if this request is granted and stressses it was previously approved by City Representatives (Gin,~ Inc. April 17, 1989 memo addresses that matter). The CityEngineer's letter of March 31, 1989 denied the request. However, the applicant by April 10, 1989 letter (copy attached) formally requested a variance of the City Ordinance. Various cerrespondence have beeen attached for background information. STAFF'S RECOMMENDATION IS NOT TO APPROVE THIS REQUEST. BIrDGET AMT.: COI~EIq TS: AMT. ESTIMATED: AMT. +/- BUllET: FINANCIAL REVIEW BY: LEGAL REVIEW BY: _ RE'VIEWED BY CM: CITY MANAGER'S COMMENTS AND/OR RECOMMENDATIONS ITEM # i~ CITY COUNCIL AGENDA 5-23-89 We have been informed that the applicant has had an independent traffic engineering firm conduct a study of the requested median opening and the results of this study will be presented at your Tuesday night meeting. Staff has not had an opportunity to review the study, and if Council is not convinced that the study addresses the safety concerns which were considered when the ordinance for streets and thoroughfares was adopted, we suggest that you table the item until City staff has had an opportunity to review the study. ] /~ %-~ .Preliminary Site Plan l . i Sandy Lake Crosstng '~' i ~'~"~ ' .... I SCH GINN, INC. April 17, 1989 Mr. Russell Doyle, P.E. City Engineer City Of Coppell P.O. Box 478 Coppell, Texas 75019 CONSULTING ENGINEERS Re: Denton Tap Rd. Imprv. from Belt Line Rd. to Sandy Lake Rd. Left Turn Lane Variance Request for Sandy Lake Crossing Dear Mr. Doyle: As per your written request of April 13, 1989, copy attached, we have reviewed the variance request and have the following comments: As mentioned in previous correspondence, the Coppell Subdivision Ordinance requires a minimum distance of 420 feet between median openings on major thoroughfares. The median opening which is the subject of this variance request is located approximately 242 feet south of the one currently under construction as a part of the Denton Tap Road Improvements Project. The sketch submitted with the variance request represents a left turn lane design which is not in compliance with the Standard Construction Details of the City of Coppell. The proposed left turn lane is separated from the northbound transition to the next standard left turn lane and median opening by approximately 20 feet of median curb. This close spacing of two left turn lanes may lead to traffic accidents resulting from drivers entering the first left turn lane by mistake and attempting to immediately correct their mistakes by jogging back to the right and into northbound traffic without first signaling their intent and checking for closely following traffic. We are opposed to allowing two left turn lanes to be located this close together. We do not recommend that the City of Coppell include the construction of the proposed left turn lane as a part of the Denton Tap Road Improvements project if the variance should be approved by the City Council. We are not prepared to assume any liability for injuries, deaths, or damages arising out of accidents attributable to the inclusion of the proposed left turn lane in the project; and we do not believe that the City of Coppell is either. Therefore, we recommend that if the variance is approved, the developer be responsible for constructing the left turn lane at his sole expense as a part of his development project. Se Please refer to the statements attributed to Mr. Ginn in the CONFERENCE MEMORANDUM attached to the variance request. These statements are inaccurate. Mr. Ginn's statements to Mr. Kurtz regarding this issue were that we could not approve the proposed left turn lane since it was at variance to tt~e Subdivision Ordinance, but the developer could request consideration for a variance to the provisions of the Subdivision Ordinance for this item. We will be happy to answer any further questions you have regarding the above. SincerDly, John C. Karlsruher, P.E. Project Engineer cc: H. Wayne Ginn, P.E. Kevin E. Peiffer, P.E. Randy Fleming File J-378/260 (a:badleft) .Preliminary Site Plan~ SCH Sandy Lake Crossing GINN, INC. April 17, 1989 Mr. Russell Doyle, P.E. City Engineer City Of Coppell P.O. Box 478 Coppell, Texas 75019 CONSULTING ENGINEERS Re: Denton Tap Rd. Imprv. from Belt Line Rd. to Sandy Lake Rd. Left Turn Lane Variance Request for Sandy Lake Crossing Dear Mr. Doyle: As per your written request of April 13, 1989, copy attached, we have reviewed the variance request and have the following comments: As mentioned in previous correspondence, the Coppell Subdivision Ordinance requires a minimum distance of 420 feet between median openings on major thoroughfares. The median opening which is the subject of this variance request is located approximately 242 feet south of the one currently under construction as a part of the Denton Tap Road Improvements Project. The sketch submitted with the variance request represents a left turn lane design which is not in compliance with the Standard Construction Details of the City of Coppell. The proposed left turn lane is separated from the northbound transition to the ne~t standard left turn lane and median opening by approximately 20 feet of median curb. This close spacing of two left turn lanes may lead to traffic accidents resulting from drivers entering the first left turn lane by mistake and attempting to immediately correct their mistakes by jogging back to the right and into northbound traffic without first signaling their intent and checking for closely following traffic. We are opposed to allowing two left turn lanes to be located this close together. We do not recommend that the city of Coppell include the construction of the proposed left turn lane as a part of the Denton Tap Road Improvements project if the variance should be approved by the City Council. We are not 17103 Preston Road · Suite 100 · LB 118 · Dallas, Texas 75248 · Phone 214/248-4900 prepared to assume any liability for injuries, deaths, or damages arising out of accidents attributable to the inclusion of the proposed left turn lane in the project; and we do not believe that the City of Coppell is either. Therefore, we recommend that if the variance is approved, the developer be responsible for constructing the left turn lane at his sole expense as a part of his development project. Se Please refer to the statements attributed to Mr. Ginn in the CONFERENCE MEMORANDUM attached to the variance request. These statements are inaccurate. Mr. Ginn's statements to Mr. Kurtz regarding this issue were that we could not approve the proposed left turn lane since it was at variance to the Subdivision Ordinance, but the developer could request consideration for a variance to the provisions of the Subdivision Ordinance for this item. We will be happy to answer any further questions you have regarding the above. Sincergly, John C. Karlsruher, P.E. Project Engineer CC: H. Wayne Ginn, P.E. Kevin E. Peiffer, P.E. Randy Fleming File J-378/260 (a:badleft) SCH April 10, 1989 Mr. Russell Doyle city Engineer City of Coppell 732 DeForest Road Coppell, Texas 75019 Re: Restricted Left-Turn Access Sandy Lake Crossing Coppel[, Texas Dear Mr. Doyle: Per our discussion this date, this letter is to formally request a variance of the city ordinance restricting median cuts to a distance greater than the restricted left hand turn median cut we have designed for the above mentioned project. As I have stated in past correspondence, it is our client's desire to assume the cost of construction for the installation of the median cut should the City find our re- quest amenable. This cost is in addition to his previous agreements to share in the cost of improvements of the southern half of Sandy Lake with Connell Develop- ment. In addition, I have included a preliminary sketch developed by Fdmley Horn Traffic Design Engineers (along with a copy of the letter Jim Kurtz sent to your office in February) that represents the configuration we desire. Further, I have again in- cluded a copy of the meeting notes we have on record dealing with the median cut. Unfortunately, I must admit the notes cannot be regarded as conclusive that a determination was made in our favor. However, they do manage to demonstrate that we were operating under the impression that we had received some form of approval and the fact remains, the Preliminary Plat was approved by the City of Coppell with the median cut shown in the configuration we need. SCH ARCHITECTS, INC. 2019 N. LAMAR, SUITE 230 DALLAS, TEXAS 75202 TELEPHONE 214 720 0390 Mr. Doyle Page Two In our view, from the start, this median cut has been crucial to the overall circula- tion plan for our Master Plan Development. Your favorable review will be most ap- preciated. Sincerely, SCH:ibmat enclosures cc: H.T. Ardinger SCH CONFERENCE MENORANDUM JOB: Sandy Lake Crossing Master P. PROJ]/CT NO.: 8634 DATE: May 6, 1987 PARTICIPANTS REPRESENTING: COPIES TO: X PARTICIPANTS X FILE OTHERS: Horace T. Ardinget Buddy Lamberth Steve Claussen Stephen C. Hundley - SCH Architects Howard Herrington - Howard Properties Jim Kurtz - PAWA i Winkleman Development Review Committee - City of Coppell Chairperson - Taryon Bowman RE: Staff review of Preliminary Plat and conceptual ~ISCUSSIONS AND CONCLUSIONS site plat, Howard Herrington opened the meeting with a brief summary of events leading to today's meeting. Items covered included cur- rent status with the anchor~ Albertsons~ and efforts to secur~ two or more junior anchors including possibly a health club. Taryon opened the meeting to comments from staff: General Telephone had no comments or problems. Tim Bradshaw of TP~L indicated that the major feeder lines wou]J need to circumvent the perimeter of the site to provide access t) the out parcels. Service, wiI! be overhead. Dale Jackso~ reminded Mr. Bradshaw that the city has an ordinance thac requires all new service to be underground. Mr. Bradshaw indi- cated that TP~L installs only overhead unless the developer want~ to bear the difference in cost for underground. Mr. Jackson sai! that he would follow up to confirm that the ordinance was CDr- rect. Fire: Requires a fire hydrant every 300' ordinance require; 24' firelanes - however~ Mr. Kurtz indicated that in previou~ discussions with the Fire Chief that 20~ was adequate if th. building was sprinklered. ' SCH ARCHITECTS. INC. 311 MARKET ST SUITE DALLAS, TEXAS 7520,2 I[LEPHON[ 214 744 142b Page Two Ginn. Bngineering Cabe Navre: Observed that the Plat will requzre a complete survey description. Also, they did not receive copies of the water and sanitary sewer plan. Jim Kurtz indicated that the plans had been submitted but that he would send additional copies. In addition, Mr. Favre observed that th~' left turn only condition along Main was unacceptable. Mr. Kurtz:, reminded him that in a previous meeting with Mr. Ginn, he had in-~ dicated that the condition was acceptable.;~ Mr, Favre will take:, the matter up with Mr. Ginn. Howard reminded staff that both the Owner of this tract and the C0nnell shopping center has expressed a willingness to bear the cost for expansion of Sandy Lake which should be taken into consideration. Also, Mr. Favre requested that 30' and 50' radii be shown on the plans at all bends in the firelanes. Shohre Daneshuand asked that drainage improvements be coordinated with the City - also, the culverts shown are actually $6", not 48". Mr. Kurtz observed that they are undersized in any event. Steve Martin indicated that before development, the city would require a traffic £1ow analysis dealing with access to the site. Dale Jackson offered the observations: On the plans show truck loading spaces as follows: 3 - $0' x 12f spaces for the main anchor 2 - for Retail 1 I - for Retail 2 1 - for the Junior Anchor Taryon Bowman requested that all existing zoning surrounding the site be shown on the plans. Revised submittals must be in by 3:00 on Monday of the following week.. END OF CONVERSATION. If you have any questions concerning this memo, please contact our office as soon as possible. This report is assumed to be a true and accurate account of the conversation unless written notification is received within ten days of this meeting. Submitted by: -Kimley. Horn and Associates, lnc. 12660 Colt Road, Suite 200, Dallas. Tex~s 75251. (214) 3~$.7007 Raie~h. Chldol~, Na~hvi~, Virginia 8~a~A. W~hiflgfOn. ~ PhOeniX. February 28, 1989 Mr. Russell Doyle City Engineer City of Coppell 732 DeForest Road Coppell, Texas 75019 Re: Restricted Left-Turn Access Sandy Lake Crossing Coppell, Texas Dear Russell: Per Our discussion at our meeting on February 16, 1989, I am submitting this letter and the attached sketch concerning the preliminary design concept for a restricted left-turn lane on northbound Denton Tap Road between the existing median opening at Braewood Drive and the opening into Minyards/McDonalds. This design restricts median access to northbound left- turns from Denton Tap Road, serving a planned future driveway located in the vicinity of Station 157 + 60 (~:) on Denton Tap Road. KimleyoHorn's transportation experts have reviewed the concept and determined that the median access design provides the necessary ransmon and storage capacity to accommodate up to about 350 vehicles per hour, given unsignalized operations. Such unsignalizod operation permits safe and efficient ingress from arterials, particularly where the median access is located in close proximity (1,000 feet or less) to a signalized intersection, i.e. Denton Tap at Sandy Lake. The adjacent traffic signal operation will effectively create adequate gaps in the traffic stream hereby ingress chicles may safely negotiate the required turn maneuver. Recommended standard design criteria for spacing of unsignalized access, published by the Texas Transportation Institute, specifies a limiting distance of 250 feet separation for arterials where the average running speed exceeds 35 mph. The proposed design satisfies this spacing criteria. The other significant criteria is related to provision of adequate sight dislance for left- turn vehicles for running speeds exceeding 35 mph. The proposed left-turn lane provides for the necessary sight distance. 8uilding client relationships since 1967 Mr. Russell Doyle February 28, 1989 Page Two We appreciate your assistance in the review of this preliminary design as this left-turn is of very significant importnnce to the proper development of the subject property. Please call if you have any questions or comments. Sincerely, KIMLEY-HORN AND ASSOCIATES, INC. ,/Ja~es M. Kurtz, P.E. ,,/ Project Manager .. DRIVE PAY ITEM 550.1 TO BE RELOCATED,[ BY OTHERS ~' SAW ,~ iF EXIST. PAY S IOO GRADE COHC; STA. 159+00 I- I0' REC*D. INLET T.C. 505.46 3 +25 EC'D. INLETI 1.19 ROW LINE GRADE TO BE REMOVEDJ ,4, DRIVE :~AY ITEM 530.1 TO BE F.X~ST 65'-' LT OF ~. 104.1,104.2 REPLACE NMACP ON 6" FLEX BASE PAY ITEMS 249,340.2 30' k ~,, 153+35 5' CURB INLET , $12.36 ISTA. 154+72 I- lO'CURS INLET(IdOOIFIED ) W/REAR OPENING ONLY T.C. 512.14 REPLACE w~6" R CONC. DRIVE ITEM 5~0, RT. OF ~.. .ol'~' SET R,R. SP ON $ SlOE S'TA. 152~.36 EL. 514.67 ) The City With A Beautiful Future March 31, 1989 P.O. Box 478 CoppelL Texas 75019 214-462-0022 Mr. Stephen C. Hundley, AIA SCH Architects, Inc. 2019 N. Lamer, Suite 230 Dallas, Texas 75202 Re: Restricted Left-Turn Access to Sandy Lake Crossing from Denton Tap Road, Coppell, Texas. Dear Mr. Hundley: We have reviewed your March 13, 1989 request for a restricted left turn access from northbound Denton Tap Road to the Sandy Lake Crossing development. We are unable to approve the construction of this proposed left turn access because it does not conform to the city of Coppell Subdivision Ordinance. If you wish to pursue this matter further it will require consideration as a variance to the Subdivision Ordinance by the City Council. The request for a variance should accompany the Final Plat for the property when it is submitted for consideration by the city Council. If yoU ~ve any further questions please feel free to call me. / Since/~ely,. ty Engineer -- cc: H. Wayne Ginn, P.E. John C. Karlsruher, P.E. Kevin E. Peiffer, P.E. File J - 378 (a:schresp) 88 1 L I J:ld¥ GINN, INC. CONSULTING ENGINEERS March 27, 1989 Mr. Russell R. Doyle, P.E. City Engineer City of Coppell P.O. Box 478 Coppell, Texas 75019 1989 , Re: Restricted Left Turn Access to Sandy Lake Crossing from Denton Tap Road. Dear Mr. Doyle: We have reviewed the attached request and sketch for a proposed left turn access to the subject property as requested. Basically the left turn access proposed is prohibited in the Subdivision Ordinanc~ and the Streetscape Plan. The Subdivision Ordinance requires 420 feet between median openings, measured from nose to nose, including 100 feet of full width median for landscaping. The proposed left turn access occurs in an area of the median 663.6 feet in length between median openings. If constructed as shown, the distance between median openings would be less than 420 feet. The Streetscape Plan requires at least 100 feet of full width median between openings for landscaping purposes also. This request would eliminate all of the aforementioned median landscaping between the Braewood Drive intersection on the south, and the median opening and left turn lanes serving both sides of Denton Tap Road at Minyard's main entrance on the north. If the person making the request insists upon pursuing this matter they must apply for variances to both the Subdivision Ordinance and the Streetscape Plan as a part of their platting efforts for the property. During that process they must show just cause why their request has merit in light of the facts that the property is: currently in a predominately undeveloped condition; bounded on the east by Denton Tap Road, and the north by Sandy lake Road with access to both; and is already proposed to be served, along with 4evelope4 property on the east side of Denton Road, with two median openings and left turn lanes along its Denton Tap Road frontage. If a request for the abovementioned variances is considered, it must contain the provision that the property owner making the request enter into a commitment with the City of Coppelt to provide funding sufficient to offset the City of Coppell's costs of Engineering, Testing and Inspection, and Construction prior to construction of the requested restricted left turn access. 17103 Preston Road · Suite 100 · LB 118 · Dallas, Texas 75248 · Phone 214/248-4900 If the variances are approved by the City Council we will be happy to prepare a Change Order to the Denton Tap Road Improvements Project. Please feel free to call me if you have further questions. Sincerely, J~hn C. Karlsruher, P.E. Project Engineer enclosures cc: H. Wayne Ginn, P.E. Kevin E. Peiffer, P.E. File J-378 (a:ardltl) SCH March 13, 1989 Mr. Russell Doyle City Engineer City of Coppeil 732 DeForest Road Coppell, Texas 75019 Re: Restricted Left-Turn Access Sandy Lake Crossing Coppell, Texas Dear Mr. Doyle: Enclosed please find a copy of the letter sent to you by Jim Kurtz of Kimley Horn requesting consideration of a restricted left-turn lane on the northbound Denton Tap Road between the existing median opening at Braewood Drive and the open- ing into Minyards/McDonalds. After reviewing the matter with our client Mr. Ardinger, it is his desire to go ahead with installation of the left-turn lane for which he would be willing to absorb the cost. Since construction is at a stage that would allow installation with minimal dif- ficulty, we respectfully request your review of this matter and advising us on the possibility of construction. In discussions with Shohre I have questioned whether a variance is really the proper method inwhich to handle this matter or whether a simple interpretation is required by the City to allow the installation. As Mr. Kurtz indicated in his letter, this left turn lane is extremely important to the proper development of the subject property and as I indicated in our meeting on February 16, 1989 - we have been operating under the assumption we had tacit ap- proval when we previously submitted for preliminary plat. ~ SCH ARCHITECTS, INC. 2019 N. LAMAR, SUITE 230 DALLAS, TEXAS 75202 TELEPHONE 214 720 0390 Mr. l~,ussell Doyle Page Two I will be touching base with in you in due course to determine what our next step is. In the meantime, if you have any questions, please do not hesitate to call. Sincerely, Stephen C. Hundley AIA President cc: H.T. Ardinger SCH:ibmat enclosures Kimley-HornandAssociates, Inc. 12660 Coit Road, Suite 2(X), Dallas, Texas 75251. (214) 386-7007 Raleigh. Charlotte, Nashvile, Virginia Beach, Wa~hinglon, Dallas, Phoenix, West Palm Beach, Tampa, Orlando, FL Lauderdale, Veto Beach, Ft. Myers, Stuarl February 28, 1989 t AR I1 Mr. Russell Doyle City Engineer City of Coppell 732 DeForest Road Coppell, Texas 75019 Re: Restricted Left-Turn Access Sandy Lake Crossing Coppell, Texas Dear Russell: Per our discussion at our meeting on February 16, 1989, I am submitting this letter and the attached sketch concerning the preliminary design concept for a restricted left-turn lane on northbound Denton Tap Road between the existing median opening at Braewood Drive and the opening into Minyards/McDonalds. This design restricts median access to northbound left- turns from Denton Tap Road, serving a planned future driveway located in the vicinity of Station 157 + 60 (+) on Denton Tap Road. Kimley-Horn's transportation experts have reviewed the concept and determined that the median access design provides the necessary transition and storage capacity to accommodate up to about 350 vehicles per hour, given unsignalized operations. Such unsignalized operation permits safe and efficient ingress from arterials, particularly where the median access is located in close proximity (1,000 feet or less) to a signalized intersection, i.e. Denton Tap at Sandy Lake. The adjacent traffic signal operation will effectively create adequate gaps in the traffic stream whereby ingress vehicles may safely negotiate the required turn maneuver. Recommended standard design criteria for spacing of unsignalized access, published by the Texas Transportation Institute, specifies a limiting distance of 250 feet separation for arterials where the average running speed exceeds 35 mph. The proposed design satisfies this spacing criteria. The other significant criteria is related to provision of adequate sight distance for left- turn vehicles for running speeds exceeding 35 mph. The proposed left-turn lane provides for the necessary sight distance. Building client relationships since 1967 Mr. Russell Doyle February 28, 1989 Page Two We appreciate your assistance in the review of this preliminary design as this left-turn is of very significant importance to the proper development of the subject property. Please call if you have any questions or comments. Sincerely, KIMLEY-HORN AND ASSOCIATES, INC. /James M. Kurtz, P.E. >~ / Project Manager c:\~(~\chargbte\rdoyte.jmk\xt2 ~ Using the above formula Stopping Sight Distances are calculated for g=O. Where: K = .~_ L =_6_S_t'_ 1398 Where L - length of vertical curve Ifil A = algebraic dtfCe~ence in g~ades Ipe~centl S = sight distance (ltl L = KA 1398 NIEDIAN OPENINGS IFlgu~e 11 Distance between opening (nose-to-nose of medianl: Minimum Maximum Width open~ng: Minimum MoxJmum LAM3SCAPED AREA IFlgu=e Minimum ~20 ft. 1,300 ft. 60 fi, 120 ft. 100 ft. includes 100' Appendix 9 Min LEIEND W - R*ght of my width L - Lone width R - Interjection rodiu8 M - Medion uid~ S - Dil~once be~,feen openin9 0 * Width Opening T -Longth left turn ~ X - Troneition N o Wodth left turn ia - IOO' Londscope F - RESERVED ~OO'x I0' For Fulure.R1 Turn Lones FIGURE l-- GEOMETRIC FOR THOROUGHFARE DESIGN