Dames & Moore, 1999 - USDA Forest Service

MEMORANDUM
Date: December 8, 1998
To: Rik Langendoen, Project Manager
From: Karen Mixon, QAIQC Manager 1~
Subject: Summary Data Quality Review
Holden Mine Remedial Investigation Phase Ill
Background Soil Data, Fall 1998
Dames & Moore Job #17693-005-019
The summary data quality review of 20 soil samples collected fcom October 12 through 17, 1998
has been completed. The samples were analyzed at the Analytical Resources, Incorporated (ARI)
laboratory in Seattle, Washington for metals by EPA Methods 6010A, 7000 series, and 200.8 modified
(including the following metals: aluminum, arsenic, barium, beryllium, cadmium, calcium, chromium,
copper, iron, lead, magnesium, manganese, molybdenum, nickel, potassium, silver, sodium, thallium,
uranium, and zinc). The analyses were performed in accordance with the methods specified in EPA Test
Methods for Evaluating Solid Waste, SW-846, January 1995. A validation package containing method
associated QAlQC data and sample data was provided by the laboratory. The following samples are
associated with laboratory work order ARI# Y962:
Sam~le I.D. ARI Sam~le #
The following comments refer to ARl's performance in meeting quality control specifications
described in the EPA documents "EPA Test Methods for Evaluating Solid Waste, SW-846", January
1995, and 'USEPA Contract Laboratory Program (CLP) National Functional Guidelines for Inorganic
Data Review", February 1994, and the Quality Assurance Project Plan (QAPP) prepared for the Phase
Ill Remedial Investigation referenced in an addendum (August 28, 1998) to the Phase Ill Sampling and
Analysis Plan.
DAMES & MOORE