When determining sampling locations for a site assessment, what factors should be considered?

When determining sampling locations for a site assessment, considering regulatory requirements and hydrological conditions is essential. Regulatory requirements ensure that assessments comply with state and federal laws, including guidelines on how and where sampling should take place. This compliance is crucial to avoid legal issues and to guarantee that the assessment meets the standards demanded by authorities.

Hydrological conditions are equally important because they affect how contaminants might migrate through the environment. Understanding the site's hydrology—such as groundwater flow, surface water drainage, and potential pathways for contamination—helps in strategically placing sampling locations. This ensures that the samples collected will accurately reflect the contamination levels and assist in assessing environmental risks. By factoring in these two elements, a more effective and compliant site assessment can be achieved, which is pivotal for remediation efforts or risk assessments.