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| Title | Puget Sound Boatyards: Zinc, Copper, Lead, and Hardness Concentrations in Receiving Waters | |||
| Month-Year Published | October 2009 | |||
| Online Availability |
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| Short Description |
The Boatyard General Permit (BGP) includes numeric benchmarks for copper that apply to stormwater runoff from boatyards. The BGP uses copper as an indicator parameter for zinc and lead, also associated with boatyard runoff. In response to a ruling by the Pollution Control Hearings Board, the Department of Ecology conducted a receiving water study to obtain data to verify or modify the metals translator and hardness assumptions used to develop the benchmarks in the BGP. Surface water samples were collected at five locations in the vicinity of Puget Sound boatyards in September 2008 and January and May 2009. The samples were analyzed for total recoverable and dissolved copper, lead, and zinc; hardness (freshwater); and total suspended solids and salinity (marine water). (Also see abstract below) | |||
| Publication Number | 09-03-051 | |||
| Author(s) | Johnson, A., R. Coots, and C. Deligeannis | |||
| Print Availability | ||||
| Number of pages | 39 + app (49 total) | |||
| Keywords | boatyard , copper, Ecology, General Permit, lead, paint, permit, pollution control, Puget Sound, receiving water, surface water, total suspended solids, water, zinc | |||
| Subject Waterbodies |
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| Related Publications | Title | Relationship | ||
| Quality Assurance Project Plan: Receiving Water Study for Puget Sound Boatyards: Metals Translators and Hardness | supporting publication | |||
| Abstract | Long Description |
The Washington State Department of Ecology (Ecology) reissued the third Boatyard General Permit (BGP) on November 2, 2005. The BGP includes numeric benchmarks for copper that apply to stormwater runoff into adjacent waters. The primary source of copper from boatyards is antifouling paints which discourage marine growth on boat hulls. The BGP uses copper as an indicator parameter for zinc and lead, also associated with boatyard runoff. A Pollution Control Hearings Board ruling on an appeal of the permit required Ecology or the boatyards to collect receiving water data to verify several assumptions used in formulating the copper benchmark. Ecology subsequently conducted the study in 2008-09, the results of which are reported here. The objective of the Boatyard Receiving Water Study was to obtain data to verify or modify the metals translator and hardness assumptions used to develop the benchmarks in the current BGP. Surface water samples were collected at five locations -- three marine and two freshwater -- in the vicinity of Puget Sound boatyards in September 2008 and January and May 2009. The samples were analyzed for total recoverable and dissolved zinc, copper, and lead, and hardness (freshwater). Total suspended solids and salinity (marine waters) were also measured. |
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This page last updated October 28, 2009
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