Publication Citation

USGS Series Open-File Report
Report Number 99-270
Title Evaluation of the Multi-Chambered Treatment Train, a retrofit water-quality management device
Edition -
Language ENGLISH
Author(s) Corsi, Steven R.; Greb, Steven R.; Bannerman, Roger T.; Pitt, Robert E.
Year 1999
Originating office
USGS Library Call Number (200) R29o no.99-270
Physical description iv, 24 p. :ill. ;28 cm.
ISBN

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Abstract

This paper presents the results of an evaluation of the benefits and efficiencies of a device called the Multi-Chambered Treatment Train (MCTT), which was installed below the pavement surface at a municipal maintenance garage and parking facility in Milwaukee, Wisconsin. Flow-weighted water samples were collected at the inlet and outlet of the device during 15 storms, and the efficiency of the device was based on reductions in the loads of 68 chemical constituents and organic compounds. High reduction efficiencies were achieved for all particulate-associated constituents, including total suspended solids (98 percent), total phosphorus (88 percent), and total recoverable zinc (91 percent). Reduction rates for dissolved fractions of the constituents were substantial, but somewhat lower (dissolved solids, 13 percent; dissolved phosphorus, 78 percent; dissolved zinc, 68 percent). The total dissolved solids load, which originated from road salt storage, was more than four times the total suspended solids load. No appreciable difference was detected between particle-size distributions in inflow and outflow samples.