Meet Our Staff

You may contact the following staff for questions regarding your project or to obtain general information about environmental testing or laboratory services.

Alfredo Pierri

Alfredo Pierri

President/CEO

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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

Alan Ching

Vice President/Director of Quality Assurance

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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

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

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.

 

Leo Raab

Leo Raab

Director of Business Development

Cell: 805-760-4548
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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

Marilyn Romero

Customer Service Manager

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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

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

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 to obtain access to our FTP or web based laboratory data review system and for information on our wide variety of Electronic Data Deliverables (EDDs).

 

Kim Tu

Kim Tu

Senior Project Manager

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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 Rejuso

Valerie Rejuso

Project Manager

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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.

 

Chris Samatmanakit

Chris Samatmanakit

Project Manager

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Chris joined Weck Labs in 2012 where he has gained experience in microbiology of water and extractions and analysis by GC, GCMS and GCMSMS for water, wastewater, soil and hazardous waste samples. He is currently managing projects involving wastewater and potable water testing.

 

Regina Giancola

Regina Giancola

Project Manager

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Regina joined Weck Labs in 2016 and has gained experience in metal determinations for water and soil/solid samples as a laboratory analyst and then as project manager. She is currently managing projects involving wastewater, potable water, and soil testing.

 

Brandon Gee

Jim Gibbons

Field Sampling Coordinator

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Mr. Gibbons has been with Weck Laboratories since 2001 working in field services. Through the years 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.

Section Group Leaders

Eduardo Morales

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

Tram Duong

Inorganic Department Supervisor

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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

Silva Mirzoyan

Organic Department Supervisor

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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.

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