Certification Recipients Sammy Salcedo Passes CHST Sammy Salcedo receives $300 CHST test fee reimbursement from David Mersereau Val Barbosa Passes OHST Chapter President Michael Garcia Presenting the $300 Check. Congrats Val! Adalin Llerenas-Acevedo Passes OHST Scholarship Chair Sandra Sanchez presents OHST Test Fee Reimbursement Check to Adalin Llerenas-Acevedo.