REQUEST FOR QUALIFICATIONS (RFQ) For GROUNDWATER MODEL DEVELOPMENT SOLICITATION # 2026-01 Issue Date: February 23, 2026 Responses must be received by: March 27, 2026 at 3:00 pm CDT Contact: info@evergreenuwcd.org 1 EVERGREEN UNDERGROUND WATER CONSERVATION DISTRICT REQUEST FOR QUALIFICATIONS (RFQ) Groundwater Model Development 1. GENERAL INFORMATION 1.1 Introduction The District requests Statements of Qualifications from qualified groundwater professionals including professional geologist or professional engineering firms to provide aquifer characterization, groundwater model development, calibration, and application. This procurement is made in accordance with the Texas Professional Services Procurement Act. 1.2 Background The Evergreen Underground Water Conservation District was created by the Texas Legislature under Section 59 of Article XVI of the Texas Constitution and Acts of May, 1965, 59th Leg. R.S., ch. 197, 1965 Tex. Gen. Laws 398; as amended by Acts of May 25, 1967, 60th Leg., R.S. ch. 1272, 1967 Tex. Gen. Laws 1676; Acts of May 30, 1983, 68th Leg., R.S., ch. 484, 1983 Tex. Gen. Laws 2852; and Acts of May 17, 1985, 69th Leg., R.S., ch. 438, 1985 Tex. Gen. Laws 2984 and the non-conflicting provisions of Chapter 36, Texas Water Code. The district was created to protect and conserve the groundwater resources of Atascosa, Frio, Karnes, and Wilson counties. The District is a local political subdivision of the state of Texas responsible for managing groundwater within Atascosa, Frio, Karnes, and Wilson Counties. Principal aquifers include the Carrizo, Wilcox, Queen City, Edwards BFZ, Sparta, Yegua-Jackson, Gulf Coast Aquifer System and other associated units. The District collects groundwater level data from a network of observation wells throughout the District across various aquifers and compiles annual production data from permitted producers. The District participates in groundwater planning through Groundwater Management Areas 13 and 15 and joint water planning through Region L. As part of its planning role, the District has historically participated in aquifer characterization studies and invested in the evaluation of aquifer parameterization. The District currently uses ArcGIS and Groundwater Vistas 9 to assist in its management of scientific data and models. More information regarding studies and available data can be found at https://evergreenuwcd.org/aquifer-science/.
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