NYC-WTC_000232249

NYC 9/11 Public Portal Document

10.0 QUALITY ASSURANCE/QUALITY CONTROL

10.1 Overview

The program described herein will be performed by the Environmental Subcontractor under subcontract to Contractor, the overall general contractor for the 130 Liberty Street Deconstruction Project. The Contractor Environmental Subcontractor will assume responsibility for the collection and analyses of all samples identified previously in Sections 5 and 6 of this plan. The Contractor Environmental Subcontractor/Contractor Team will assume responsibility for the quality of all data to be collected in the conduct of the deconstruction project. LMDC in its role as property owner will utilize its independent Environmental Consultant to serve in an oversight role to the Contractor monitoring activities. This oversight role will include additional QA/QC measures to be implemented by LMDC and its consultants to further insure that all monitoring data meet predetermined data quality goals and objectives. A separate document or Quality Assurance Project Plan (QAPP) will be prepared and issued for agency review and comment. This QAPP will provide details on all QA/QC measures to be put in place by the Contractor Environmental Subcontractor/Contractor Team for the deconstruction monitoring program. This QAPP will also identify all of the additional QA/QC measures to be undertaken by the LMDC consultant to fulfill its oversight function for this program.

10.2 Contractor Environmental Subcontractor/Contractor Quality Assurance/Quality Control

The Contractor Environmental Subcontractor/Contractor Team will have primary responsibility for implementation of all program Quality Control measures identified in the QAPP. These will include but not be limited to the following types of QA/QC features:

• Data Quality Objectives • Detection Limit Goals • Data Capture Goals • Chain of Custody • Calibration Procedures and Frequencies • Field Blanks • Lab Blanks • Collocated Samples • Matrix Spikes • Lab Control Spikes • Lab Method Blanks • Field Surrogate Spikes • Lab Surrogate Spikes • Corrective Action Measures

Elements of QA/QC typically contained in a QAPP are listed in Table 6.

L2005-149 (051205) 1 5023623.2

C ITY_D E P_WO RB Y_C AN N ATA_SU B P_000114904

NYC-WTC_000232273