Manager of Ecological Services
Senior Biologist
Hydrex Environmental
Nacogdoches, Texas
Email: ckeim@hydrex-inc.com
Education
B.S. Agriculture
Stephen F. Austin State University
Nacogdoches, Texas
Professional Licenses
Summary of Work Experience
Christina Keim, REM, PWS, serves as a Senior Biologist and Manager of Ecological Services for Hydrex Environmental (Hydrex) located in Nacogdoches, Texas. Christina has over sixteen years of experience as a biologist at Hydrex, dedicated to a range of environmental projects for government, commercial, industrial, and private entities. Her core expertise includes wetland delineations, stream assessments, biological assessments, jurisdictional determinations, and regulatory agency permitting.
Detailed Description of Work Experience
Ms. Keim is highly experienced in waters of the U.S. delineation and determinations in accordance with the 1987 Wetlands Delineation Manual and 2010 Regional Supplements. She has vast experience in the determination and classification of hydric soils, hydrophytic vegetation, and wetland hydrology.
She is highly skilled in performing various types of stream and wetland functional assessments, such as TXRAM and HGM, to evaluate the ecological health and function of aquatic resources for purposes of determining compensatory mitigation ratios as well as to aid in feasibility studies for potential mitigation banks.
She is skilled in performing habitat surveys for federal and state listed rare, threatened, and endangered species and identifying the potential to affect their critical habitat. She is qualified in advancing projects through consultation with the United States Fish and Wildlife Service (USFWS) in accordance with Section 7 of the Endangered Species Act.
During the course of her professional development, she has managed a wide variety of short-term and long-term projects focused on the delineation, permitting, and mitigation of Section 404 and Section 10 waters of the U.S. Her project experience spans large-scale residential, commercial, and industrial developments; mitigation banks; linear infrastructure like roads and utility lines; and oil and gas facilities, including pipelines, well pads, and compressor stations. She expertly navigates clients through the USACE regulatory framework, streamlining the process for Standard Individual Permits, Nationwide General Permits, and Regional General Permits.
Ms. Keim is highly proficient in Geographic Information Systems (GIS), specializing in ArcGIS Pro and other ESRI ArcGIS applications. She manages comprehensive workflows, including GIS data compilation, data management, and analysis used for project planning and reporting. She integrates office-based analysis, such as aerial photograph interpretation with hands-on Global Positioning System (GPS) and Global Navigation Satellite System (GNSS) field data collection and post-processing.
Ms. Keim is an experienced FAA Small Unmanned Aircraft Systems (sUAS) Remote Pilot, where she is proficient in planning and conducting flights to gather high-resolution aerial data for a wide range of environmental applications.
Ms. Keim also has expertise in:
