WMOD00287 ‎(2)‎

• Project Name: Project Skywater
• Title: Summary Report - Seeding Agents Group - November 8-12, 1976, Skywater Meeting
• Date: 11/8/1976
• Weather Modification - Doc Type: Report

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Issue 12: Abiotic Concentration, t-bVem2l1t, And Dispersion

C- By rroverrent of surface soil containing silver, this agent can be concentrated
in localized areas by either wind or ~ter. The nugnitude of this concentration
following cloud seeding, especially under wetting and. drying conditions, has not
been well investigated, but the consensus of the task force is U1at it could
be a real issue.

Soil conservation districts in some areas have expressed concern for this issue,
to account for the higher priority in the lay and regulatory groups.

This issue directly impinges on other aquatic issues.

Recomrendat ion s

Research should indicate the range of rates of silver accumulation as might
actually occur under a variety of seeded mnditions. Research on the soil-
sediment-aqua tic continuum should be continued to improve our ability to ~!'~
silver levels and novement in impact areas.,

Issue 13: Air A'1d Water Quality - General Agent Levels

The task force feels that this is not an issue of scientific concern but that
it is ,of nore concern to groups further from sources of information.

This issue is closely related to the direct toxicity issue, so the concerns
here are the same as those expressed earlier but on a lesser scale of intensity.

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,,_ Recormrendations

Infornation on seeding agents in waters and air should be made available to
interested groups, and methcx:101ogy for detection should be improved.

Issue 14: Chemical Forms And Transfonrations

This issue, which has been raised prinurily by applied scientists, has not
become a p::>int of general concern to the present time. With lay public concern
for transfonrations of such metals as mercury, the concept may be extended to
silver-derived materials, although similar types of effects would not be
expected.

With scientific evidence available that transfonrations nay occur, this can
involve secondary and perhaps nore subtle effects \vhich will still may not ~me
of even m:xlerate public concern. HOl.^rever, the possible role of transformation
of seeding agent fonns through chemical and biological processes may nake this
of nore direct concern to the lay public in the future.

Recomrrendat ion s

Along with improvements in detection of levels and forms of seeding agents,
a better understanding of biological and chemical transformation processes should
be developed.

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