Alfredo Pierri
CEO
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vCard: AlfredoPierri.vcf
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Alfredo has experience in analytical chemistry since 1979. He joined Weck Laboratories in 1987 as Lab Director before becoming President and CEO in 1994.
Alan Ching
Vice President/Director of Quality Assurance
Extension 116
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Alan has experience in environmental analysis since 1990 when he joined Weck Laboratories and has a MS degree in analytical chemistry. He has been at Weck Laboratories performing tasks in a variety of roles: as an analyst, a supervisor, and as Technical Director. He is currently the QA Director for the Laboratory.
Joe Chau
Vice President/General Manager
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Joe has experience in the analytical environmental chemistry field since 1989. He has held many positions at Weck Laboratories: as an analyst, a supervisor as a Technical Director and is now the General Manager of Weck Laboratories. He is also an expert in spectrometric analytical methods for trace metals such as ICP-MS and ICP-AES, metal speciation and low level mercury analysis and in the field of radiochemistry. He holds BS degrees in both Engineering and Chemistry and an MBA from the Claremont Colleges.
Agustin Pierri, Ph.D.
Laboratory Technical Director
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Dr. Agustin Pierri obtained his BS in Chemistry from the University of Southern California and his Ph.D. in Chemistry from the University of California Santa Barbara. He has been an analyst in different sections of the laboratory and since 2007 has worked in the LC-MS/MS department developing all analytical methods by that technique. Prior to becoming Technical Director in July of 2016, he has been working as Methods Development Manager for all departments of the Laboratory.
Kim Banks
Director of Business Development
Cell: 626-764-8550
vCard: KimBanks.vcf
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Kim has been working within the environmental laboratory business since 1983, holding various positions ranging from microbiologist to laboratory director. Her focus at Weck Laboratories is to provide new and current customers with technical and logistical information about our broad range of analytical and customer services.
Leo Raab
National Sales Manager
Cell: 805-760-4548
vCard: LeoRaab.vcf
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Leo has experience in analytical and environmental chemistry since 1979, ranging from chemist to laboratory director. His focus at Weck Laboratories is to provide new and current customers with technical and logistical information about our broad range of analytical and customer services.
Marilyn Romero
Customer Service Manager
Extension 106
vCard: MarilynRomero.vcf
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Marilyn has been employed at Weck Labs since 1985 in the customer service and project management fields. Her duties include facilitating the interaction between clients and laboratory personnel for the successful performance of projects, identifying and setting up new projects, and helping existing and potential customers with technical issues. She is also the head of the Project Management at the Laboratory.
Brandon Gee
Operations Manager
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Brandon joined Weck Labs in 2006, where he gained experience in extractions and analysis by GC & GCMS for water, wastewater, soil and hazardous waste samples. Prior to becoming Operations Manager, he held the position of Senior Project Manager, managing complex projects involving wastewater and potable water testing.
Bryan Dinh
IT/LIMS Director
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Bryan joined Weck Labs in 2006. He is responsible for the maintenance and proper operation of all information systems. Contact Bryan for information on our wide variety of Electronic Data Deliverables (EDDs).
Kim Tu
Senior Project Manager
Extension 118
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Kim joined Weck Labs in 2007 and has gained experience in metal determinations for water and soil/solid samples as laboratory analyst and then as project manager. She is currently managing projects involving wastewater, potable water, and soil testing.
Valerie Ayo
Senior Project Manager
Extension 105
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Valerie has been employed at Weck Labs since 2005, assisting project managers with daily activities where she gained experience reviewing Chain of Custodies, preparing bottle orders, and managing small projects. She is currently a Project Manager responsible primarily for projects involving drinking water monitoring.
Yolanda Martin
Senior Project Manager
Extension 104
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Yolanda joined Weck Labs in 2022. She is a dedicated and detail-oriented Project Manager with 18 years of experience managing an expansive client portfolio of drinking water related programs. She has a combined 35 years of experience in the environmental laboratory testing industry. Her analytical experience includes analysis of Carbamates and Glyphosate by HPLC following EPA methods 531.2, 547, and 549, and Gas Chromatography/Mass Spectrometry using EPA methods 524.2 for Volatile Organics and 525.2 for Semivolatile Organics, and sample preparation and GC analysis of Trihalomethanes, Aldehydes, and EDB & DBCP by EPA methods 556, 504, 601/602, and 8015. She holds an A.S. in Chemical Technology from the Los Angeles Trade Technical College.
Alejandra Gomez
Project Manager
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Alejandra joined Weck Labs in 2023. She started her career in the environmental laboratory business in 2004, gaining technical expertise in water quality testing regulations and a passion for customer service. She has in depth experience supporting water quality projects, providing excellent project management for water utilities, city and county agencies, consultants, bottled water clients, and international clients. She has an academic background in microbiology and chemistry.
Rahul Nair
Project Manager
Extension 102
vCard: RahulNair.vcf
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Rahul's passion for customer service along with his technical and regulatory knowledge make him a great fit as a Project Manager. His background includes years of experience in the environmental laboratory holding various positions including Project Management, Business Development, Quality Assurance, and Sample Management. He holds a B.S. in Biology from the University of California in Riverside, CA.
Carlos Navarro
Field Sampling Coordinator
Extension 101
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Mr. Navarro has worked with Weck Laboratories in 1991 for 14 years then returned in 2016. Through the years, he has been working in field services where he has met many of our customers face to face, assisted in sampling activities, field monitoring and analyses. He also assists Project Managers in preparing reports for wastewater clients. He coordinates field sampling activities with our water utilities and industrial wastewater clients.
Eduardo Morales
Organic Department Supervisor
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Eduardo has worked at Weck Laboratories since 1999, all of it at the organics department where he developed new analytical methods and optimized extraction techniques, mostly for emergent contaminants analysis. His expertise includes the operation and maintenance of single quad and triple quad GC/MS systems with multi-vendor software as well as organic sample preparation equipment. He is currently managing the organic sample preparation section and volatiles organics analysis. His routine duties involve data review, running non-routine analyses, and the supervision and training of personnel within his department.
Tram Duong
Inorganic Department Supervisor
Extension 107
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Tram has been employed at Weck Labs in 2000, all of her experience is in the Wet Chemistry/Metals section. During her time as analyst she has gained hands on experience in all wet chemistry analyses—both automated and manual—performed at the lab, as well as an analyst for ICP and ICP-MS instruments. Her current duties involve managing day to day operations of the inorganic department which includes wet chemistry, metals digestion and analysis and radiochemistry and microbiology. Other tasks involve employee training and review of data packages.
Silva Mirzoyan
Organic Department Supervisor
Extension 136
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Silva has been employed at Weck Laboratories since 2005 as an analytical chemist, performing analysis in the organic department were she gained experience in GC, GC/MS, HPLC, LC/MS/MS and volatile organic analyses by Purge&Trap-GC/MS. She currently manages the semivolatile GC/MS and the LC-LC/MS sections of the department. Her routine duties involve data review, running non-routine analyses, and the supervision and training of personnel within her department.