Subject: Info for '94 Study Unit Summary Reports
Date: Wed, 24 Nov 1999 09:53:44 -0700
From: Dennis Helsel 
To: nawqa_97pc, nawqa_91pc, nawqa_94pc
CC: "John S Zogorski, Supervisory Hydrologist, Rapid City, SD",
    "Robert J Gilliom, Supv. Hydrologist, Sacramento, CA",
    "Jeffrey D Stoner, Supervisory Hydrologist, Denver, CO",
    "Carol A Couch, Hydrologist, Norcross, GA",
    "Alan H Welch, Hydrologist, Carson City, NV",
    "Peter C VanMetre, Hydrologist, Austin, TX",
    "Sarah J Ryker, Geographer, Denver, CO",
    "Verlin C. (Cory) Stephens, Hydrologist, Denver, CO",
    "Timothy L Miller, Chief, NAWQA, Reston, VA",
    "William G Wilber, National Synthesis Coordinator, Reston, VA",
    "Robert S Williams Jr., Hydrologist-NAWQA Nat'l Synth, Denver, CO",
    "Jeffrey T Armbruster, Asst. Reg. Hydr.-NAWQA, Norcross, GA",
    "Michael C Yurewicz, Asst. Reg. Hydrol.-NAWQA, Reston, VA",
    "Ivan C James II, Asst. Reg. Hydrologist-NAWQA, Denver, CO",
    "Marc A Sylvester, Asst. Reg. Hydrologist-NAWQA, Menlo Park, CA",
    reg.wqspecs@srv1rvares.er.usgs.gov,
    WRD.trace.element.interest.gp:;,
    "Elisabeth A Graffy, Environ Policy Specialist, Reston, VA"

Trace Element Synthesis News v.10
Info for '94 Study-Unit Summary Reports

Denny Wentz and others have completed short summaries to help you put 
your study unit findings into a national context.  Based on other 
published articles, the summaries describe information known to date 
on three trace element issues:

Trace elements in bed sediments (91 study unit data)
    Main message:  urban seds often have concentrations high enough to
                   affect stream biota.

Arsenic in ground and surface waters (91 study unit and NWIS data)
    Main message:  In 14 to 30% of US counties, arsenic concs in GW
                   exceed the likely new MCL at 10% or more wells.
                   (map on public page)

Radon in ground water (91 and 94 study unit data)
    Main message:  concentrations can be somewhat predicted from GD's
                   radiometric U measurements.  East coast and Rockies
                   generally have highest concentrations.

You'll find these on the TE Synthesis Internal page:
http://water.usgs.gov/nawqa-only/trace/index.html
in the section titled:
Summaries of trace elements across the U.S.

I expect a fourth summary of mercury in sediments and fish will join 
these soon.  We hope these will better enable you to put your trace 
element findings into a broader perspective.  Comments, questions or 
reactions are welcomed -- call or email me.

You might also visit the TE external page at:
http://water.usgs.gov/nawqa/trace
for up to date info on regulations, publications, etc.


Previous TE news blurbs:
v.1   Trace Element Synthesis Staffing and plans   2/10/99
v.2   Changes to TE lab methods for bed sediments  2/19/99
v.3   Well Selection for Subunit Surveys           2/26/99
v.4   Mercury in Streambed Sediments               3/04/99
v.5   Radium in Ground Water                       4/08/99
v.6   Elements in Sch 2703                         6/14/99
v.7   TEs in stream seds across US                 8/18/99
v.8   TE Synthesis: Live and Online               10/04/99
v.9   New Radon Standards proposed by US EPA      10/22/99

see them all !!   Backfiles of dusty memos, and more !!  at:
http://water.usgs.gov/nawqa-only/trace/tenews/index.html


---------------------------------------------------------------
    Dennis R. Helsel                    Ph:  (303) 236-2101 x227
    Trace Element National Synthesis    Fax: (303) 236-4912
    U.S. Geological Survey
    PO Box 25046, MS-415                dhelsel@usgs.gov
    Denver, CO   80225           http://water.usgs.gov/nawqa/trace