||Method 1669 : Sampling ambient water for trace metals at EPA water quality criteria levels. [Microfiche].
||DynCorp - EENSP, Alexandria, VA. Environmental Programs Div.;Environmental Protection Agency, Washington, DC. Office of Water.
|| [U.S. Environmental Protection Agency, Office of Water, Office of Science and Technology] ; [Available from National Technical Information Service],
Trace elements in water--United States--Measurement. ;
Metals--Environmental aspects--United States. ;
Water quality--Standards--United States. ;
Water--Pollution--United States. ;
Trace elements in water--Measurement.
Water pollution detection ;
Trace amounts ;
Water quality ;
Test methods ;
Water pollution sampling ;
Water analysis ;
Chemical analysis ;
Ground water ;
Surface waters ;
Potable water ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||43 pages : illustrations ; 28 cm
The method is for the collection and filtration of ambient water samples for subsequent determination of total and dissolved metals at the levels listed. It is designed to support the implementation of water quality monitoring and permitting programs administered under the Clean Water Act. This method is applicable to the metals listed and other metals, metals species, and elements amenable to determination at trace levels. This method is not intended for determination of metals at concentrations normally found in treated and untreated discharges from industrial facilities. Existing regulations (40CFR Parts 400-500) typically limit concentrations in industrial discharges to the mid to high part-per-billion (ppb) range, whereas ambient metals concentrations are normally in the low part-per-trillion (ppt) to low ppb range.
Cover title. "April 1995." Microfiche.