Department of Health Seal

TGM for the Implementation of the Hawai'i State Contingency Plan
Section 5.0
FIELD COLLECTION OF SOIL AND SEDIMENT SAMPLES

5.0 FIELD COLLECTION OF SOIL AND SEDIMENT SAMPLES

This Section describes procedures, methods, and equipment for the collection of Multi Increment soil and sediment samples (refer to Section 4). Alternative sampling approaches, including discrete sampling, must be demonstrated to the HDOH Hazard Evaluation and Emergency Response Office (HEER Office) to meet sampling theory requirements and yield reproducible data in both the field and the laboratory if they are to be used for final decision making purposes (e.g., USEPA, 1995b; USACE, 1996; NJDEP, 2005; Nielsen, 2006; see Section 4.3).

A site-specific Sampling and Analysis Plan (SAP) and associated Quality Assurance Project Plan (QAPP) should be developed prior to mobilization for sample collection (see Section 3). The SAP describes the types and quantities of samples to be collected and the rationale for their collection. The plan also describes Quality Assurance/Quality Control (QA/QC) procedures to ensure that sampling design and measurement errors are controlled sufficiently to meet the tolerable decision error rates specified in the DQOs.

Individuals planning or conducting site investigations are encouraged to communicate with the HEER Office regarding the guidelines during all stages of investigation to discuss issues such as:

  • Appropriate decisions, data needs, DQOs;
  • Aligning sampling strategy with investigation data needs;
  • Deviation from sample collection procedures presented in the HEER TGM (e.g. alternative test methods);
  • Deviation from approved sample collection methods due to unexpected conditions encountered in the field; and
  • Use of technologies or methods not covered in this guidance.

The sampling guidelines presented in this Section are intended to ensure that sample integrity is maintained by capturing and preserving site representativeness to the greatest extent possible.

The HEER Office has developed the process of Fast Track Cleanup (FTC) as an investigation option. For eligible sites, the FTC approach requires less intermediate regulatory review and approval of formal sampling plans by involving increased communication and consultation with the HEER Office. It places a greater burden of technical justification on the FTC participant to demonstrate to the HEER Office prior to conducting an investigation that the chosen sampling strategy will adequately address needs based on site-specific DQO and that proper QA/QC will be performed. If the HEER Office does not believe the quality of work will meet the needs of that investigation, a greater degree of planning and coordination (which may involve submittal of a formal work plan) will be required or disqualify the participant from an FTC agreement. This places responsibility on the FTC participant to hire a knowledgeable consultant who understands the current laws and guidelines. Specific details of the FTC process are presented in Section 15.