Notes
Email dated January 3, 2001 from Chung K. Yee to Kevin Fitzpatrick regarding copper contamination in fill soil samples from a proposed Third Runway fill source site. Beth Clark questioned use of Method B protection of groundwater standard (100X groundwater standard) for copper samples testing 70–100 mg/kg. Yee reaffirmed the Method B standard and disagreed with Clark’s suggestion to abandon the 100X groundwater standard. Document archived as AR 017292 and marked Exhibit 20 (Yee, 12/17/01, M. Green).
