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HRS Rule, Table 2-3, Page 51589

Sample Measurement < Sample Quantitation Limit a

No observed release is established.

Sample Measurement >= Sample Quantitation Limit a

An observed release is established as follows:

  • If the background concentration is not detected (or is less than the detection limit), an observed release is established when the sample measurement equals or exceeds the sample quantitation limit. a

  • If the background concentration equals or exceeds the detection limit, an observed release is established when the sample measurement is 3 times or more above the background concentration.

a If the sample quantitation limit (SQL) cannot be established, determine if there is an observed release as follows:


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