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6E � <br /> GENESIS ENGINEERING&REDEVELOPMENT <br /> Sediment Samples <br /> Constituent Con Sammpl er Q ample Preservative Holding Time <br /> ity <br /> Nitrate 48 Hours <br /> Nitrite 48 Hours <br /> Acetate Sample <br /> Ammonia 8-inches of 28 Days <br /> Nitrogen Isotope Ratio Sleeves(sealed at Sample Sleeve Ice,cool to 4°C — <br /> both ends) <br /> Standard Cations 14 Days <br /> Standard Anions 14 Days <br /> Groundwater and Surface Water Samples <br /> Constituent Sample Sample Preservative Holding Time <br /> Container Quantity <br /> Nitrate 48 Hours <br /> Nitrite 48 Hours <br /> Nitrogen Isotope Ratio Glass 500 ml Ice,cool to 4°C <br /> Standard Cations 14 Days <br /> Standard Anions 14 Days <br /> Total Dissolved Solids 28 Days <br /> Ammonia Glass 500 ml H2SO4 28 Days <br /> 3.5.4 Sample Control <br /> This section describes sample control procedures, including Chain-of-Custody documents and <br /> custody seal. <br /> Chain-of-Custody Record <br /> All samples submitted to the analytical laboratory will be accompanied by a Chain-of- <br /> Custody document to record points of sample handing. Chain-of-Custody forms will be <br /> prepared for groups of samples collected at a given location on a given day. Each form will <br /> be prepared in triplicate, and one of the three copies will accompany the samples to the <br /> laboratory. One copy will be kept in the QA/QC file and another copy will be retained in the <br /> project file. The Chain-of-Custody form makes provision for documenting sample integrity <br /> Lima Ranch 13 of 17 <br /> Site Characterization Work Plan Addendum <br /> April 2008 <br />