Environmental Research and Laboratory Services Division (ERLSD)
Environmental Management Bureau 
DENR Compound, Visayas Avenue, 
Diliman, Quezon City
Telephone Numbers:  (8) 4264336; 4264337; 426-4339; 426-4340
Fax: (8) 426-4332; 426-4340
Email Address  :  erlsdco@emb.gov.ph