Cesium dating sediments
He takes information out of context, leaving in the horrors and removing the explanations that make them not so horrible.
And he wanders in and out of the topic at hand, lumping things together that have nothing to do with each other. And if you’d like, enjoy some nice sushi-grade tuna while you do.
The sediments containing the maximum PCB concentrations are associated with the period of maximum PCB release into the watershed.
Sedimentation rates averages 2.1±1.5 g/(cm yr) for 12 of 18 cores collected.
The highest PCB concentrations wer associated with silt/clay layers (1.8-3.5% total organic carbon (TOC)), while sand layers (0.05-0.32% TOC) contained much lower PCB concentrations.The 1994 Record of Decision cleanup requirement is 1.0 mg/kg; two more goals (0.4 and 0.5 mg/kg t-PCBs) also were identified.Average surface sedimentation requirements to meet the three goals were 1.4 ± 3.7, 11 ± 4.2, and 33 ± 11 cm, respectively. Vertical t-PCB concentration profiles in these cores began with relatively low PCB concentrations at the sediment-water interface and increased in concentration with depth until maximum PCB concentrations were measured at ~30-60 cm below the sediment-water interface, ca. Maximum t-PCB concentrations were followed by progressively decreasing concentrations with depth until the t-PCB concentrations approached the detection limit, where sediments were likely deposited before the onset of PCB use at the Sangamo-Weston plant. Cores collected from six downgradient Lake Hartwell transects consisted primarily of silt and clay (0.91-5.1% TOC) and were less noticeably impacted by the release of sand from the impoundments.
The words might have changed, but the crap science remains. On July 22, 2013, TEPCO revealed that a large amount of water was flowing into the basements of the damaged reactors and leaking out into the Pacific – at a rate of 300 long tons per day.