When the PSI spots warning signs, that’s when a Detailed Site Investigation starts. Not just walking around or digging up past reports - this phase runs actual lab checks on dirt, water, air, or swabs off surfaces to find solid evidence. The big win here? Precision. No more hunches; test results confirm if contamination’s really there and how serious it is. Because now decisions rely on hard data, fixing things becomes quicker, cheaper, less messy. Folks constructing stuff could pick the wrong specs without a DSI - costing money or freezing approvals. Since info from a DSI is reliable, city planners and examiners back decisions on builds, site fixes, or land rules quicker; this certainty cuts delays plus avoids hiccups.
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