HEER Office

• 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

Reference: HDOH, 2017d

• This Q&A provides responses to common questions regarding the August 2012 HDOH TPH vapor report.

Reference: HDOH 2012c

• 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 Hawaiʻi HEER TGM addressing pesticide contamination at former agricultural facilities and sites.

Reference: HDOH 2011d

• 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

• 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, Oʻahu 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 to enable users to run discrete vs multi-increment sample scenarios, or other analyses of this data.
• Author notes and calculations are provided.

Reference: HDOH, 2011i

• 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.

Reference: HDOH, 2011b

• 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

Reference: HDOH, 2011f

• Technical memorandum outlines procedures for long-term management of residual petroleum contamination in soil and groundwater at sites where full cleanup is not practicable.

Reference: HDOH, 2007c

• See October 2008 Batch Test Leaching Model Spreadsheet to facilitate use of this model.

Reference: HDOH, 2007