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The Geotechnical Driller will perform geotechnical explorations and well installations using hollow stem auger and mud rotary methods. Candidates should be able to lift over 50 pounds and have geotechnical drilling experience, preferably along with OSHA training and a CDL (commercial driver's license).

The Billing Manager will oversee monthly billing operations, manage the billing staff, improve processes, train PMs on billing practices, liaise with clients for special requirements, and handle collections. They will ensure timely completion of billing tasks and address any billing discrepancies.

The Environmental Project Manager will be responsible for managing and performing environmental services, supervising staff, preparing project documentation and reports, and handling project budgets and proposals.

Seeking an Environmental Scientist with up to three years of experience to join our team in Abingdon, Maryland. The ideal candidate will have experience in Phase I and II Environmental Site Assessments and brownfields, although it is not required. Strong written and verbal communication skills are a must.

The Billing Specialist position involves processing billing for multiple locations, producing and reviewing invoices according to project contracts, and communicating effectively with internal teams. Responsibilities include maintaining client relationships, contributing to billing process improvements, and managing multiple billing scenarios.

As a Project-Level Geotechnical Engineer at GTA, you will be responsible for geotechnical exploration reports, engineering calculations, project management, and overseeing junior staff. You will also coordinate laboratory testing and enhance in-house practices.

The Natural Resources Manager will oversee projects related to natural resources, managing client relations and project deliverables, including wetland assessments and reports, while mentoring staff and ensuring regulatory compliance.