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V <br />' i <br />` • • <br />- ' P ('~' <br />~G'v1 DAMES & MOORE <br />:~;-~... <br />(„w.-,._.i A DAMES d MOORE GROUP COMPANY <br />Mr. Paul Phillips, Esq. <br />Mr. Christopher Thome, Esq. <br />Tuesday, November 24, 1998 <br />Page 2 of 2 <br />• Wipe samples from drums temporarily stored in the wash plant settling basin at the time of <br />Dames 8 Moore's site assessment contained relatively high concentrations of 2,4D weed <br />killer. The concentrations ranged from 20 mg/kg to 80 mg/kg in the wipe samples. <br />• The sample of bag house dust (MP-BHD) contained 12.0 mg/kg of 2,4-D <br />Extremely small concentrations (below the practical quantitation limit) of the herbicide Dicamba <br />were also detected in the wipe samples from the stored drums and the bag house dust sample. <br />Because the Dicamba concentrations are so low and due to the close similarity in the chemical <br />structures of Dicamba and 2,4-D, it is believed that the Dicamba indicated in the testing results <br />is present as an impurity in the 2,4-D herbicide. <br />The analytical test results presented in this letter are consistent with a release of 2,4-D weed <br />killer. Further, the diesel fuel present in association with the weed killer is consistent with <br />information provided in the material safety data sheet (MSDS) for the product called Repco Kill <br />IIT". According to the MSDS, Repco Kill IIT" is a mixture of 2 percent 2,4-D and greater than 90 <br />percent diesel fuel. Repco Kill IIT'" also contains approximately 2 percent of another weed killer <br />known as "Bromacil". The method used for analyzing chlorophenoxy herbicides is not capable <br />of detecting Bromacil. Bromacil was not detected in the November 12, 1998, samples. In the <br />future, samples collected under the SAP currently being prepared by Dames 8 Moore will be <br />analyzed for Bromacil, as well as the chlorinated weed killers. <br />This concludes the summary of preliminary analytical testing results for samples collected at <br />B&B's Montgomery Pit facility. Dames & Moore is currently preparing a detailed SAP for the <br />facility designed to characterize the nature and extent of contamination from the reported <br />chemical releases. Dames 8 Moore anticipates that the SAP will be finalized early in the week <br />of November 30, 1998. <br />Please do no spate to contact me with any comments or questions regarding these sample <br />testing r ts. i <br />Environmental <br />cc: Scott Hoover <br />Peter Rudy <br />Attachment <br />\\DEN1 \VOL1 \PROJ\B881MNTGMRYLLETTERSIPHILI P3.DOC <br />