Discover your full potential. At Tetra Tech, we are collaborating with industry-leading experts for a sustainable future for our world. We combine consulting and engineering with advanced analytics and technology to solve the world's most complex challenges. Our innovation hubs across the globe will enable you to share ideas and best practices while growing your professional network. Wherever you are in your career journey, you will benefit from working with world-class engineers, scientists, and technical specialists. Apply today and join the company that is Leading with Science. Tetra Tech is currently seeking a part-time Analytical or Environmental Chemists for our Denver, CO location to provide senior data validation support to federal and other clients. Are you ready to take the next step in your career? Do you want to do meaningful work that improves the quality of life? At Tetra Tech, you will work with high-performing teams who are passionate about doing high quality technical work and using their expertise to find solutions to complex problems in environment, infrastructure, resource management, energy, and international development. The selected candidate will provide advanced analytical chemistry-related support for environmental projects involving federal, tribal, state, local, and private clients. You will be responsible for conducting up to Stage 4 data validation and data quality assessments. Advanced data validation experience is required. You will work collaboratively with a team of experienced chemists, scientists, and engineers who provide data validation services to clients across the company. Additional job responsibilities include: * Support environmental emergency response activities; field investigations (involving soil, sediment, water, and air sampling); coordination with analytical laboratories; and data planning, collection, and evaluation. * Provide task and project management support, including procurement and oversight of subcontract laboratories. * Work collaboratively with and under the supervision of a project or program manager. * Support the preparation of and technical writing for reports, letter reports, remedial investigation reports, monthly progress reports, standard operating procedures, and more. * Prepare other various technical deliverables including databases, proposals, cost estimates, tables, and figures. Strong writing skills are critical. * Interact with Tetra Tech offices nationwide, and interact with subcontractors, stakeholders, and clients. Qualifications: The ideal candidate will have a minimum of 10 years of relevant experience in conducting validation of laboratory analytical data according to EPA and other government guidance and protocols. Specifically, the candidate must have/be: * Significant experience and advanced proficiency in conducting data validation of all Stages (Stages 1 through 4 as defined in EPA's Guidance for Labeling Externally Validated Laboratory Analytical Data for Superfund Use [January 2009]). Therefore, the position requires depth of experience in conducting multiple Stages of data validation, up to and including Stage 4 reviews of full (Level 4) laboratory data packages; must include experience with recalculating instrument calibration equations and quality control (QC) and field sample results, and interpreting chromatograms and mass spectra in support of target analyte identification. Significant experience is required in the use and application of the EPA CLP National Functional Guidelines for organic, inorganic, and high-resolution data review. The candidate must have broad experience validating analytical data for both organic and inorganic parameters, including for EPA SW-846 Methods 8260 (volatile organic compounds); 8270 (semivolatile organic compounds); 8081 (organochlorine pesticides); 8151 (herbicides); 8290 (dioxins and furans); 8330 (explosives); 6010/6020/7470/7471 (metals and mercury); and 6850 (perchlorate). * Full knowledge, familiarity with, and understanding of the various compendiums of laboratory analytical methods, including EPA SW-846, EPA toxic organic methods in ambient air, and the Contract Laboratory Program (CLP) Statements of Work. * Experience conducting data validation of the analysis of samples (for example, via EPA Method 537.1 and EPA Draft Method 1633) for per- and polyfluoroalkyl substances (PFAS) is a plus. * Experience conducting data quality assessments and writing data quality assessment reports that summarize the reconciliation of a project's data quality with the stated project data quality objectives (DQO). * Proficiency in interpreting field and laboratory analytical data and preparation of technical reports. Experience preparing technical reports, memos, response to comments tables, data tables, and figures is required. * Able to interface with clients, subcontractors, working groups, and internal customers is required. * Able to communicate effectively and make evaluated decisions for the betterment of the client and the company. * Relevant field experience in collecting environmental samples across all media (soil, sediment, water, waste, and air); and the proper preservation, handling, and shipping of environmental samples to laboratories preferred. * Experience reviewing and managing environmental data and databases using software such as Microsoft Access or R is also preferred. * Experience in laboratory analysis, field chemistry, and field sample collection for site investigations and emergency response efforts is preferred. * Experience with field analysis and analytical laboratory operations is also preferred. This includes: performing preparatory and analytical procedures associated with gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS) methods, such as EPA SW-846 Methods 8015, 8081, 8082, 8260, 8270, or equivalent methods; performing preparatory and analytical procedures associated with inorganic SW-846 Methods 6010, 6020, 7470, and 7471; using portable x-ray fluorescence (XRF) analyzers; using commercially available semi-quantitative field screening methods; conducting routine maintenance of analytical equipment and instruments; and conducting laboratory operations such as using laboratory balances; preparing calibration standards, internal standards, surrogate or deuterated monitoring compound standards, and laboratory quality control (QC) samples; and conducting instrument calibrations. * Flexible and able to manage multiple demands successfully. In addition, this position requires: * Driving on a regular basis. Passing a motor vehicle record background check and maintaining a valid driver's license and good driving record is required. * Passing a criminal background check. Degree / Certifications: * BS/BA degree in Chemistry, Analytical Chemistry, Environmental Chemistry, Chemical Engineering, or a related scientific discipline is required. * OSHA 40-hour HAZWOPER Training preferred but not necessary. * In addition to English, fluency in other languages will be considered a plus. Work Environment: This position is part-time. The work environment will consist of mostly office work with potential minimal field work. The candidate must be able to work in the field 10% of the time. In addition, you must be able to: * Work on a computer in an office environment for office-based tasks. * Work beyond traditional hours, including evenings and weekends, in order to meet client deadlines. The Salary Range for this position is $45/hour - $55/hour, depending on education, experience, skills, and location. Tetra Tech offers comprehensive benefit options that allow employees to design a plan based on individual needs and assists in planning for long-term financial security. Available benefits include medical, dental and vision insurance, term life, disability, accidental death & dismemberment coverage, Flexible Spending Account (FSA), Health Spending Account (HSA), time off with pay, 401k retirement plan, and an Employee Stock Purchase Plan. Health and safety play a vital role in our success. Tetra Tech's employees work together to comply with all applicable health & safety practices and protocols, including any public health orders and regulations that are mandated by local, state, provincial, federal, and international authorities as well as client and project requirements. The deadline to apply to this position is Thursday, September 29, 2024.. About Tetra Tech: Tetra Tech combines the resources of a global, multibillion-dollar company with local, client-focused delivery in more than 550 locations around the world. Our reputation rests on the technical expertise and dedication of our employees-27,000 associates working together to provide smart, scalable solutions for challenging projects. We are proud to be home to leading technical experts in water, environment, infrastructure, resource management, energy, and international development. Explore our open positions at https://www.tetratech.com/careers. Follow us on social media to learn more about our people, culture, and opportunities: LinkedIn: @TetraTechCareers Twitter: @TetraTechJobs Facebook: @TetraTechCareers Tetra Tech is proud to be an Equal Opportunity Employer. Diversity, inclusion, and equity are among Tetra Tech's core values. Throughout our history, the company has prioritized equitable inclusion of all people. All qualified candidates will be considered without regard to race, color, religion, national origin, military or veteran status, gender, age, disabilities, sexual orientation, gender identity, pregnancy and pregnancy-related conditions, genetic information and any other characteristics protected by the law. We invite resumes from all interested parties. Please visit our website at www.tetratech.com to see the array of diverse services and exciting projects we are currently working on. Tetra Tech is a VEVRAA federal contractor and we request priority referral of veterans for available positions. We thank all applicants for their interest, however, only those candidates selected for interviews will be contacted. Please no phone calls or agencies. Additional Information * Organization: 103 EMI