Welcome to the HEER Office Technical Guidance Manual Homepage!

The HEER Office Technical Guidance Manual (TGM), also called the Hawaiʻi HEER TGM, provides in-depth guidance on environmental assessment and cleanup under Hawaiʻi Revised Statutes, 128D.

The HEER Office TGM has been updated and moved to a new web address maintaining its electronic format. See Log of TGM Updates for details when each section of the TGM was posted or updated for use. See PDF Download for PDF versions of the web pages; the full TGM Document is a PDF Portfolio of the individual Sections. Refer also to the separate web page on Decision Unit and Multi Increment Sample (DU-MIS) investigation methods as this web page provides information and links to other webpages related to TGM sections for investigations of contaminated soil, sediment, water and air.

The TGM contains recommended technical approaches and procedure, but is considered guidance only, not regulation. Property owners or environmental consultants can propose alternate technical strategies or methods to the HEER Office, as long as they can be demonstrated to adequately address the site investigation and/or site cleanup objectives.

Please contact the HEER Office to report releases of hazardous substances or to discuss technical questions related to reporting, release responses, or other requirements.

Office of Hazard Evaluation and Emergency Response
Hawaiʻi State Department of Health
2385 Waimano Home Road
Pearl City, Hawaiʻi 96782
Telephone: (808) 586-4249
Fax: (808) 586-7537
After Hours to report releases: (808) 236-8200