MALB_2014 with 1-21 Revisions

Conducting Measurements of Radon and Radon ANSI/AARST MALB-2014 with 1/21 Revisions Decay Products in Schools and Large Buildings 7 2.8.1 Reporting QA checks All quality control (QC) check measurements for duplicates, comparison checks, spikes and blanks associated with a testing project shall be included in report documentation, as required in Section 8.4 . 2.8.2 Onsite—Duplicate and comparison checks For each detector configuration, duplicate measurements, or comparison checks associated with continuous radon monitors (CRM), shall be: a) not less than 10% of all locations tested during each initial and follow-up test procedure , and b) distributed as widely as possible across all buildings being tested during the same testing event. 2.8.3 Blanks required The local office(s) directly implementing the testing project(s) shall conduct blank quality control check measurements for charcoal adsorption detectors ( CAD ) , alpha track detectors ( ATD ), and electret ion chamber detectors ( EIC ) in compliance with requirements of both a) and b) of this Section 2.8.3 . a) Project Start-up For local office(s) directly implementing a testing project or projects that require 50 test locations or more during the same 60-day period, blanks shall conducted in accordance with Table 2.8.3 . Table 2.8.3 Project start-up For CAD , ATD and EIC detectors, no less than nine blanks that meet the following requirements are to be conducted prior to or in conjunction with initiating test deployments: 1. Three lab-transit blanks (to look for unexpected exposures during shipping or handling) shall be returned to the laboratory immediately, or in conjunction with, beginning detector deployment. 2. Three office blanks (to reveal any unexpected exposures during storage) shall remain where detectors are stored and be returned to the laboratory per normal procedure for the field detectors. 3. Three field blanks (to reveal unexpected exposures onsite or from handling procedures) shall be deployed in the field and returned to the laboratory per normal procedure for the field detectors. Standard practice of conducting not less than 5% blanks for all testing locations shall resume when the number of test locations exceeds 180 in accordance with Section 2.8.3 b . b) General Requirements ( Blanks ) Project startup and throughout the testing project shall be subject to the following requirements: 1. The total number of blank measurements conducted and analyzed for each different detector configuration shall be not less than 5% of all testing locations where the detector configuration is deployed. 2. A portion of the required 5% blanks shall be field blanks with additional blanks dedicated to other evaluations, if and where deemed necessary, such as environments where test device inventories are stored (i.e., office blanks ) and anomalies that might occur as a result of shipping (i.e., lab-transit blanks ). 3. Blank measurement results associated with other quality control activities at the local office(s) implementing the testing project are acceptable to include for meeting testing project reporting requirements in Section 8.4 . 4. For CAD and ATD detectors where storage locations have not been evaluated and monitored, blank measurements shall be conducted prior to deployment for detectors that have been