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WATER GREMON PUBLIC HEALTH AsSES.5.MENT: PUBLIC COMMENT DRAFT { SQTs are contaminant concentrations -above which harmfdi effects on.sedlinent-dwelling organisms ire likely. Figure 9 shows .the locations and lead concentration;, of all the sediment.samples. Figure 9, Lead iri Sedlmentt*Strrripllrfg.R&tilts In June 2019, five sediment samples were Collected from Lambert Creek, two sediment samples from the eaststormwater pond inlets, and one.sediment sample at the east stormwater pond outlet,. No VO.Cs were detected in these sediments, but lead was found above the'MPCA's Level I SQT of 36 ppm in four of the fivesamples in Lambert Creek (up to 118 ppm). the -two stormwater pondinlet samples were-above.the Level II. SQT of 13.0 ppm for lead (at 215 and 1060 ppm) whife the stormwater outlet sarilple was at 71 ppm. In QctOber 2019, 14additional sediment samples were collected and analyzed for lead. Severn of those samples were -taken along the north bank of lambert Creek and. ranged from 3.1 i37*ppni:*Other sampleswere taken from creek inlets and stormwater pond discharge locations. The highest concentrations, 374.and 546 ppm, were. collected .between the east stormwaterpond discharge and Lampert Creels. In July 2020, five sediment samplesweee collected, one iftLambert.Creek, three from the west stormwater pond, and one from the.south stormwaterpotld. Lead in the Lambert Creek samplewas above the Level I SQT (at 86.1 ppm), but lower in the four stormwater pond samples (4.3 to 26 pptn), 31