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Assessment of Field Variability(Field Duplicate or Co-located Samples) <br /> Blind duplicate composite soil samples will be collected — approximately I blind duplicate sample per 20 <br /> stockpile composite samples collected. Blind duplicate samples will be assigned their own sample number so <br /> the sample is "blind" to the laboratory. The actual sample location will be documented in the Field Notes. <br /> Field Variances <br /> As conditions in the field may vary, minor modifications to the sampling program may be required. When <br /> appropriate,the Project Manager and QA Officer will be notified,and a verbal approval will be obtained before <br /> implementing the changes. In this instance, an email will also be sent to the DRMS contact for the project, <br /> documenting the change. Modifications to the approved Plan will be documented in the sampling project report. <br /> Field Health and Safety Procedures <br /> Specialized training, in the form of Hazardous Waste Operations and Emergency Response worker training, is <br /> required for all Pinyon field personnel, either conducting or overseeing the field sampling activities. Pinyon <br /> staff maintain up to date annual refresher training, as is required by the Occupational Safety and Health <br /> Administration. A project specific Safety and Health Plan will be prepared for all Pinyon staff once the Plan is <br /> approved and a field schedule has been established. <br /> College level education with an appropriate degree and field of study are very important,and on the job training <br /> can also be critical. Pinyon field staff include Environmental Scientists, Geologists, Hydrogeologists, and <br /> Engineers that each have an appropriate education and field experienced to make good and consistent field <br /> decisions and follow appropriate SOPS. <br /> This concludes the proposed Stockpile Sampling Plan. Please let us know if you have questions or comments, <br /> or if Pinyon can initiate scheduling of the stockpile sampling program described herein. <br /> Sincerely, <br /> 4,�, Oev6n <br /> Pinyon Environmental, Inc. <br /> Darin Worden <br /> Senior Hydrologist <br /> cc: Scott Clark, Burns, Figa&Will, P.C. <br /> Charles Kellerman, Butala <br /> Mr. Lucas West Page 12 <br /> Environmental Protection Specialist <br />