Title page for ETD etd-09142002-113412


Type of Document Master's Thesis
Author Edwards, David H
URN etd-09142002-113412
Title Lead distribution at a Public Shooting Range
Degree Master of Science
Department Geological Sciences
Advisory Committee
Advisor Name Title
Craig, James R. Committee Chair
Rimstidt, james Donald Committee Co-Chair
Scanlon, Patrick F. Committee Member
Keywords
  • shotgun
  • ammunition
  • shooting range
  • environment
  • lead
  • shot
Date of Defense 2002-09-02
Availability unrestricted
Abstract
(ABSTRACT)

A detailed study has been made of the distribution of lead on a public shotgun range in the George Washington-Jefferson National Forests in southwestern Virginia. Sampling of more than 100 sites has yielded data on the distribution pattern of the lead shot. Since opening in 1993 through 2000, 11.1 metric tons of lead has accumulated over an area 220 by 300 m (66,000 m2) with an average rate of accumulation of 1.4 metric tons per year. More than 85 % of the total dispersed lead lies scattered in the forest that surrounds the approximately 60 by 60 m cleared shooting surface. Lead is irregularly distributed because of the use of stationary targets and the general trajectory of launched clay targets. Maximum concentrations occur at distances of about 28 m about 80 m, and at about 180 m reach a maximum value of more than 5000 g per m2. Significant amounts of fine particulate lead, generated during shooting and as a result of impact occur close to the shooting box but absent at distances beyond 50 m.

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