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all* Leighton Consulting <br />I (A6) Environmental Services <br />• Decontamination: Decontamination of field equipment is vital to maintaining sample <br />` integrity and avoiding cross-contamination. Drilling equipment Is typically steam-cleaned <br />between boring locations and soil sample equipment is hand-washed with a detergent <br />solution followed by a tap water rinse and a distilled water rinse. Investigation-derived <br />waste will be containerized and disposed of properly, based on the respective level ,of <br />contamination. <br />s <br /> Laboratory Analysis: Leighton will subcontract analytical laboratory services with <br /> TestAmerica, who are certified by the State of California and have consistently <br />em demonstrated the highest measure of Quality Control/Quality Assurance (QA/QC). Analyses <br />?.. will be performed in accordance with Contract Laboratory Program (CLP) protocol and <br /> sample integrity will be maintained through the use of new sample containers, completed <br /> sample labels, appropriate preservation, and Chain-of-Custody documentation. <br />m0 Constituents of concern may include, but are not limited to, petroleum hydrocarbons, <br /> heavy metals (including arsenic and aerially deposited lead), volatile organic compounds <br /> (VOCs), semi-volatile organic compounds (SVOCs), polychlorinated biphenyls (PCBs), <br /> organochlorine pesticides, and asbestos. Complete copies of laboratory reports, including <br />ter <br />the QA/QC summary reports will be incorporated In an appendix to the Site Investigation <br /> Report. <br />b„ <br />• Quality Assurance/Quality Control: Quality Assurance/Quality Control is a vital part of any <br />site investigation. All field activities will be conducted in accordance with the Leighton <br />Corporate QA/QC Plan. In addition, we will perform our services in accordance with any <br />specific QA/QC requirements of the City which will be determined during the initial Project <br />.:a Kickoff and scoping meetings. Laboratory QA/QC will be performed for each method of <br />analysis in accordance with EPA protocol for the test method. The QA/QC data will be <br />reported in summary forms that include a description of the constituent or analyte, the <br />` specific test method, the date, the detection limit for the specific test method, the percent <br />accuracy, the percent precision, and the signature of the laboratory manager or director. <br />These QA/QC forms will be included in the Site Investigation Report. <br />L2* <br />CITY OF SANTA ANA I RIGHT OF WAY CONSULTING AND RELATED SERVICES 23 <br />.n, <br />s? 25C-95