The Akron Beacon Journal reports that the Pennsylvania Department of Environmental Protection report shows that the combustible fluid was not found in any drinking sources or cause any injuries.
The airship was carrying about 16 gallons of the fluid, Dynalene MV, that was pumped through tubes and containers to keep the airship's equilibrium.
The airship, also known as HALE-D, was deliberately crashed after a malfunction in southern Pennsylvania on July 27.
Personnel from Lockheed Martin cleaned up about a quart the fluid from the stream and about a gallon was recovered from the craft. The remaining fluid apparently burned up in the fire.
The state is asking for further water quality testing and intends to test the ashes from the site to decide if any enforcement actions are needed.
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