Stormwater permitting for a large construction project: NPDES and Boston's Central Artery/Tunnel

Conference · Fri Jan 01 04:00:00 EST 1993 · Environmental Professional; (United States)

OSTI ID:6119669

Bryan, B B ^[1]

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1. BSC Group, Boston, MA (United States)

The promulgation of EPA's NPDES stormwater discharge regulations occurred during the latter planning stages for Boston's Central Artery/Tunnel Project, making this project, one of the largest single urban highway projects ever built, one of the first to be permitted under new regulations. The Project consists of 128 land miles of new highway, including numerous ramps and interchanges, and a harbor tunnel, with stormwater discharging during construction from at least 38 separate points. Complicating the permitting situation, stormwater is combined with dewatering discharges from excavations in filled and former industrial areas. Working closely with EPA Region 1 and the Massachusetts Department of Environmental Protection, the Massachusetts Highway Department submitted a permit application combining estimates of dewatering discharge quality derived from groundwater sampling with all the elements of a NPDES application for construction stormwater. The resulting permit contained two separate sets of monitoring requirements for the same discharge points, one for stormwater and one for dewatering. Quarterly monitoring was required for both dewatering and stormwater for metals, suspended solids, TPH, and VOC. Limits of 50 mg/1 TSS and 5 mg/1 TPH were established for dewatering only.

• OSTI ID: 6119669
• Report Number(s): CONF-930523--
• Conference Information: Journal Name: Environmental Professional; (United States) Journal Volume: Supplement
• Country of Publication: United States
• Language: English

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