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Item 6D - Screening ProposalFrom: Blayne Johnson Sent: Monday, September 9, 2024 9:45 AM To: Dennis Killough Cc: Banschbach, Paul M. Subject: TRA Kirkwood Lift Station Rezoning - Sabre Drive Visibility Follow-up Importance: High Good Morning Dennis, At the Southlake City Council meeting on Tuesday 9/3, TRA received comments from Council members regarding the desire for TRA to provide a "masonry wall" parallel to Sabre Drive to block visibility into the expanded Kirkwood Lift Station site, as part of its construction contract. TRA and Garver pointed to an existing Oncor easement that crosses through the property. It was discussed and generally agreed that Oncor would likely not approve a permanent structure such as a masonry wall across its easement, as that would block access, and that TRA would reach out to Oncor for confirmation. Following the City Council meeting, TRA and Garver reached out to Oncor to confirm what Oncor might allow across its 150 ft easement. In response, Oncor has stated that a masonry wall across its easement would very likely not be approved. However, a "panel fence", no taller than 8 feet high, with a 16-ft minimum gate might be approved. A utility encroachment permit application would need to be sent from TRA to Oncor to begin their review. In order to comply with Southlake City Council's desire for reduced visibility into the Kirkwood Lift Station site, as well as to get Oncor's approval to construct across its easement, TRA proposes the 8 foot tall "panel fence" instead of a masonry wall, along Sabre Drive, shown in red on the attached exhibit. The exhibit shows where the panel fence would be placed, as well as gates required for TRA or Oncor access. It is not likely that an official decision would be provided by Oncor in time for the next Council meeting on 9/17. Worst case, this 150-ft segment would need to remain open and unchanged. In order to access its parking area and maintain the reduced visibility, TRA would require gates Located across the driveway. Two 30-ft long electric cantilever slide gates are proposed to provide the access needed and provided reduced visibility from Kirkwood Blvd. The gates would remain closed and locked, unless there is an emergency lift station shutdown. Also attached are some photos of the type of panel fence proposed. This fence is a "semi- permanent" feature; individual panels can be removed if ever needed but the fence is intended to remain after construction is completed to block visibility. These photos are taken from another TRA Lift station expansion construction project that is currently underway. The attached exhibits and photos are provided for Southlake's review. TRA respectfully requests that these be reviewed and considered for approval and any additional comments and preferences in relation to this visibility concern be provided to TRA prior to the next Council meeting so we can be adequately prepared to discuss, if needed. A high-level estimate is that these features would add approximately $200- $300K to the project. Please let me know if there are any questions or anything I can clarify on behalf of the Authority to facilitate Southlake's review. Thankyou! Blayne Johnson, PE Assistant Manager, Engineering Services, Pipeline Planning, Design & Construction Administration Trinity River Authority of Texas Office Direct: 817.493.5173 t r � . w a 9 4 O J m 0 0 O 05-C-101 05-X-101 05-C-102 05-C-103 05-C-201 O 05-C-301 J I a �n- I a J a J a PL r -Id PL -ld Q4 Id EXISTING LIFT STATION "3+-�111 .� t♦` r y t, 1 '""'� ��'[ �+'-'►�; .�� � � ' i � i )��`ID' �'k. � �� err\" ' - A: '''`..'~ 40 A Am 9 ��•`,� 1' N �, s ,I r� 0 20' 40' 80' EL -la - (IN FEET) 120' © 2024 GARVER, LLC THIS DOCUMENT, ALONG WITH THE IDEAS AND DESIGNS CONVEYED HEREIN, SHALL BE CONSIDERED INSTRUMENTS OF PROFESSIONAL SERVICE AND ARE PROPERTY OF GARVER, LLC. ANY USE, REPRODUCTION, OR DISTRIBUTION OF THIS DOCUMENT, ALONG WITH THE IDEAS AND DESIGN CONTAINED HEREIN, IS PROHIBITED UNLESS AUTHORIZED IN WRITING BY GARVER, LLC OR EXPLICITLY ALLOWED IN THE GOVERNING PROFESSIONAL SERVICES AGREEMENT FOR THIS WORK. REGISTRATION NO. 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DRAWING NUMBER 05-C-100 SHEET 1 NUMBER SITE WORK POINTS POINT # DESCRIPTION NORTHING EASTING 1 MATCH TO EXISTING EOC 7043985.30 2380135.63 2 45-6" CURB RADIUS 7043942.25 2380150.18 3 PT OF 45' RADIUS 7043957.69 2380192.98 4 PC OF 15' RADIUS 7043953.23 2380194.59 5 35'-6"' CURB RADIUS 7043941.16 2380161.26 6 PT OF 15' RADIUS 7043911.15 2380180.11 7 EOC 7043896.26 2380157.72 8 EOC 7043812.93 2380210.22 9 EOC 7043767.15 2380239.06 10 EOC 7043847.44 2380366.35 11 EOC 7043976.46 2380284.97 12 PT OF 15' RADIUS 7043970.18 2380275.10 13 15' CURB RADIUS 7043980.73 2380263.69 14 PC OF 15' RADIUS 7043975.30 2380249.70 15 PT OF 45' RADIUS 7043995.09 2380247.61 16 44'-4" CURB RADIUS 7043989.72 2380292.45 17 MATCH TO EXISTING EOC 7044032.65 2380278.59 18 MATCH TO EXISTING EOC 7044070.34 2380394.90 19 19'-4" CURB RADIUS 7044051.31 2380401.04 20 PT OF 20' RADIUS 7044059.65 2380419.21 21 PC OF 5' RADIUS 7044019.23 2380437.78 22 EOC 7043928.01 2380457.25 23 EOC 7043943.01 2380471.52 24 10' RADIUS 7043980.98 2380476.44 25 MATCH TO EXISTING EOC 7043983.95 2380487.91 26 MATCH TO EXISTING EOC 7044012.17 2380488.23 27 PT OF 39'-4" RADIUS 7044013.88 2380491.93 28 39'-4" CURB RADIUS 7044053.83 2380492.32 29 PC OF 39'-4" RADIUS 7044037.40 2380456.64 30 PT OF 20' RADIUS 7044062.64 2380444.21 31 19'-4" CURB RADIUS 7044071.01 2380462.42 32 MATCH TO EXISTING EOC 7044090.15 2380456.62 (i) SITE LAYOUT COORDINATES NOTES: 1. 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ANY USE, REPRODUCTION, OR DISTRIBUTION OF THIS DOCUMENT, ALONG WITH THE IDEAS AND DESIGN CONTAINED HEREIN, IS PROHIBITED UNLESS AUTHORIZED IN WRITING BY GARVER, LLC OR EXPLICITLY ALLOWED IN THE GOVERNING PROFESSIONAL SERVICES AGREEMENT FOR THIS WORK. REGISTRATION NO. F-5713 z O o_ U U) Lu 0 W Q 0 W IL � J U) U)°6Z Q w z w W IL 0 Ywp Lu LU w >� UL� Z Z �O Owl Z ZCnQ �LLI Q 0W(n PROPOSED GRADING PLAN JOB NO.: 19WO5146 DATE: SEPT 2024 DESIGNED BY: JAP DRAWN BY: IDC CHECKED BY: CDG BAR IS ONE INCH ON ORIGINAL DRAWING 0 IF NOT ONE INCH ON THIS SHEET, ADJUST SCALES ACCORDINGLY. DRAWING NUMBER 05-C-201 SHEET 1 NUMBER r s � r r �� f I .. ._ .. _ .. .. '` . a'.e H'�„*��d.'�� �"�➢�`•67. - 'mac Y,�