Hawaii State Department of Health - www.hawaii.gov/health

DEPT. OF HEALTH

HEER OFFICE

TGM HOMEPAGE

Technical Guidance Manual
Additional Guidance Documents

Effective Date	Description	Link
October 2012	Additional Notes on HDOH report Field Investigation of the Chemistry and Toxicity of TPH in Petroleum Vapors This Q&A provides responses to common questions regarding the August 2012 HDOH TPH vapor report.	PDF Link will open a new window.
September 2012	Update to Soil Action Levels for Inorganic Arsenic and Recommended Soil Management Practices: Presents an update to previous editions of soil management practices for inorganic arsenic. Updates default background arsenic soil action level. Categories for management and evaluation of arsenic-contaminated soil have been revised and simplified, Presents comparison data of soil exposure to dietary exposure, Presents a comparison to the 2010 Draft USEPA Arsenic Toxicity Review	PDF Link will open a new window.
August 2012	Field Investigation of the Chemistry and Toxicity of TPH in Petroleum Vapors: Implications for Potential Vapor Intrusion Hazards Report on a field investigation regarding vapors associated with the immediate source area of subsurface petroleum-contaminated soil and groundwater. Emphasis is on the aliphatic and aromatic carbon range makeup of TPH vapors and potential for TPH vapors to drive vapor intrusion hazards over individual compounds such as BTEX, naphthalene, and methane. An evaluation of both TPH and targeted individual compounds is required under HDOH HEER Office guidance. Five study sites in Hawai`i, known through prior investigations to be heavily contaminated, were targeted for collection and detailed analysis of soil gas associated with petroleum-contaminated soil and groundwater.	PDF Link will open a new window.
June 2012	Summary of Pesticide and Dioxin Contamination Associated with Former Sugarcane Operations Provides an overview of chemical contaminants found at former Sugarcane Operations, compiled from case files at HDOH. Includes target pesticide groups for different former sugarcane operations, and individual site data summaries. Supplemental data to Section 9 of the Hawai`i HEER TGM addressing pesticide contamination at former agricultural facilities and sites.	PDF Link will open a new window.
October 2011	Batch Test Leaching Model Spreadsheet: An update to the October 2008 spreadsheet to calculate Kd desorption coefficient and estimate contaminant concentration in source area leachate and in groundwater. Refer to April 12, 2007 guidance on "Use of Laboratory Batch Tests to Evaluate Potential Leaching of Contaminants from Soil" for background and use of this spreadsheet	XLS Link will open a new window.
October 2011	Guidance for the Evaluation of Imported and Exported Fill Material, Including Contaminant Characterization of Stockpiles: Provides guidance related to import and export of fill material for contaminant removal or remediation sites. This includes: The HEER Office definition of "acceptable fill material" Overview of the fill material determination process Some sources of fill considered suspect for contamination Fill material sampling strategies and methods (including stockpiles), and Other fill material management considerations	PDF Link will open a new window.
March 2011	Use of Decision Unit and Multi-increment Soil Sample Investigation Approaches to Characterize a Subsurface Solvent Plume. TCE-contaminated soil located from 6 ft below ground surface down to 15-25 feet below ground surface at a site on Hickam Air Force Base, O`ahu was investigated using Decision Unit (DU) and Multi-increment Sampling (MIS) techniques. 29 borings were installed within an area of approximately 100,000 square feet (the DU), and DU soils were further subdivided into seven vertical layers. The boreholes and layers were investigated separately, but combined to make decisions about the DU as a whole. A total of 164 “core increments” (a section of a borehole corresponding to a specific DU layer) were subsampled and collected from targeted DU layers, and replicates were also collected from a number of boreholes. Data was utilized to determine average concentrations of VOCs in each borehole and for targeted DU layers. The data were also used to identify the lateral and vertical location and mass of the subsurface contamination. Note: The data tables included in the PDF copy of this report (see "PDF Link") are provided in EXCEL Tables HERE to enable users to run discrete vs multi-increment sample scenarios, or other analyses of this data.	PDF Link will open a new window.
March 25, 2011	Technical Guidance Manual Notes: Decision Unit and Multi-increment Sample Investigations. A compilation of notes and recommendations for Decision Unit (DU) and Multi-increment Sampling (MIS) site investigations. Addendum to TGM guidance, based on experience since publication of the revised TGM in 2008 and 2009. This information will be incorporated in future updates to the TGM.	PDF Link will open a new window.
June 2010	Update to Soil Action Levels for TEQ Dioxins and Recommended Soil Management Practices: Presents an update to the action levels and soil management practices for dioxins and furans ("TEQ Dioxins"). Provides updated 2010 TEQ Dioxin Soil Action Levels, Categories and guidance for evaluation and management of dioxin-contaminated soils are presented, Detailed information on the development and support of the action levels is provided in three Attachments	PDF Link will open a new window.
June 27, 2007	Long-term Management of Petroleum-Contaminated Soil and Groundwater: Guidance for long-term management of residual petroleum contamination in soil and groundwater at sites where full cleanup is not practical. Includes Revisions to Target Contaminants of Concern for petroleum-contaminated media, Identification of specific environmental concerns in an Environmental Hazard Assessment, Identification of long-term management needs and preparation of an Environmental Hazard Management Plan, Need/Options for potential continued HDOH oversight	PDF Link will open a new window.
April 12, 2007	Use of Laboratory Batch Tests to Evaluate Potential Leaching of Contaminants from Soil: Guidance for assessing the potential impact to groundwater posed by leaching of contaminants from vadose-zone soils. This model uses site-specific soil data to evaluate contaminant mobility and estimate contaminant concentrations in soil leachate and future impacts to groundwater based on leachate dilution assumptions. See October 2008 Batch Test Leaching Model Spreadsheet to facilitate use of this model.	PDF Link will open a new window.
Initially posted February 2005 then periodically updated – see link for latest update	Screening for Environmental Hazards at Sites with Contaminated Soil and Groundwater (or "EHE Guidance"). The HEER Office EHE Guidance and HEER Office TGM are the two major HEER Office technical guidance documents. Topics covered in the EHE Guidance include: Environmental Action Levels for Soil, Soil Gas, and Groundwater Environmental Action Levels Surfer (electronic lookup tables) Guidance on the site-specific evaluation of environmental hazards, including direct exposure, vapor intrusion, leaching and contamination of groundwater, impacts to drinking water resources, impacts to aquatic and terrestrial ecological habitats, gross contamination, etc. Additional guidance on the preparation of Environmental Hazard Evaluations (EHEs) Additional spreadsheet models for use in more site-specific EHEs	Link will open a new window.