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The following activities have taken place during this reporting period:
In order to determine the cause of the release, NCDENR Department of Water Quality (DWQ) conducted sampling at the site. They collected three soil samples (including sediment from Moss Fork Creek) and two water samples, one upstream of the discharge and one downstream of the discharge). They analyzed the samples for organics and the results area as follows:
SS-1: Collected from the sediment near the discharge point - 330 ppm gasoline organics, 440 ppm diesel organics
SB-1: Collected from a bore sample located adjacent to E. Caswell St. - 5.5 ppm gasoline organics, BDL for diesel
SB-2: Collected from a bore sample located upstream of the stream sediment collection area - 31 ppm gasoline organics, 230 ppm diesel organics
DS-1: Water Sample collected downstream of discharge - Minor hits for BTEX
US-1: Water Sample collected upstream of discharge - No detectible volitiles
The results of this data show that the discharge is most likely a gasoline/diesel mixture, most likely from an underground storage tank at the Anson Mart property.
The likely PRP, the owner of Anson Mart, has removed a small AST from behind the store that at one time held kerosene used for heating. He also has been asked by the state UST program to perform a dye tracer study on his UST system to isolate the source of the possible leak.
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