presents a summary of the risk ratings assigned for each pond:

Table 7-7 – Number of Ponds per Risk Rating

For the Medium and High rated sites, Level II testing, if deemed appropriate by the District Contamination Impact Coordinator (DCIC), is recommended. The Level II assessment can include hazardous material surveys, soil borings, monitor well installation, soil and groundwater sampling, laboratory testing, and the use of Ground Penetrating Radar (GPR).

For the locations rated No or Low for contamination, no further action is required. These locations are not anticipated to have contamination risk to the project limits at this time.

Once final design plans are available, additional review is recommended in consideration of dewatering operations that may be necessary under the National Pollutant Discharge Elimination System (NPDES) Generic Permit for Stormwater Discharges from Large and Small Construction Activities. Verification testing may be warranted for contamination issues within 500 feet of the dewatering area.

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