Res 2013-165/Approving agreement w/Brown & Gay Engineers for services in connection w/Hwy 123 at Wonder World relocations project

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Attachment `A' Scope of Services Brown & Gay Engineers, Inc. (BGE) is pleased to submit this proposal to the City of San Marcos to provide design and construction phase services for the relocation and adjustment of City of San Marcos water and sewer mains in conflict with the TxDOT project at State Highway 123 (SH 123) and Wonder World Drive. The 30% TxDOT plans for SH123 dated September 2013 form the basis of the following scope of services. If acceptable, this proposal will form the basis for Work Authorization No. 1. PROJECT BACKGROUND The proposed TxDOT SH 123 improvement project provides a new overpass over Wonder World Drive with improvements beginning approximately 500' south of De Zavalla Dr. and extending south approximately 6,100 feet. The TxDOT project will expand the existing ROW from generally 130' to 245' with the additional right -of -way acquired from the west side of SH 123. The TxDOT design plans are currently at 30% complete. As a result of the roadway improvements, existing City of San Marcos water and wastewater lines will need to be relocated and/or adjusted. Exhibit `A' provides a general project map identifying the water and wastewater lines in conflict and depicts the anticipated relocations, adjustments, and easements required. PROJECT IMPROVEMENTS The following lists the water and wastewater lines in conflict with the anticipated relocations /adjustments required. Waterlines (Approximately 3,230 if of new water line assumed) o SH 123 Station 60 +90 (Crossing): 110 if of existing 12" waterline — encasement may need to be extended. • SH 123 Station 84 +90 (Crossing): 350 if of existing 12" waterline and 220 if of 18" steel encasement in ROW - waterline may need to be adjusted to avoid conflict with the proposed bridge piers and encasement may need to be extended. • SH 123 Station 84 +90 to 112 +50: 29760 if of 12" waterline along west side of SH 123 in existing 25' easement - will need to be relocated in a proposed 25' water /wastewater easement. • SH 123 Station 94 +10 (Crossing): 150 if of existing 16" waterline & 30" steel encasement in proposed ROW — waterline and associated encasement will need to be extended approximately 100 if to reconnect with the relocated 12" waterline. Wastewater lines (Approximately 4,680 if of new 18" wastewater force main assumed) • SH 123 Station 61 +90 (Crossing): 400 if of 12" wastewater line and 400 if of 18" recycle water line — encasement may need to be extended. • SH 123 Station 62 +00 to 68 +30: 630 if of 24" wastewater gravity main along west side of SH 123 in existing 25' easement — relocation NOT INCLUDED. • SH 123 Station 68 +30 to 113 +50: 4,5201f of 18" wastewater force main along west side of SH 123 in existing 25' easement - will need to be relocated in a proposed 25' water /wastewater easement. PROJECT TEAM The Project team was assembled to provide the required expertise for this project. The following lists the members of the project team and their associated task responsibilities. Brown & Gay Engineers, Inc. (BGE): - Project Management, Water & Wastewater Design and Coordination. Sub Consultants: Brown & Gay Engineers, Inc. Page 1 of 5