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0 • <br /> GUS <br /> GENESIS ENGINEERING&REDEVELOPMENT <br /> The groundwater samples will be analyzed for the following constituents: <br /> 1. Nitrate <br /> 2. Nitrite <br /> 3. Ammonia <br /> 4. Nitrogen Isotope Ratio <br /> 5. Anions and Cations <br /> 2.3 Task 3—Water Supply Well Sampling <br /> Water samples and data on the depths of the well screen intervals will be collected from all <br /> on-site supply wells. Samples will be collected from the tap closest to the supply well and <br /> will be analyzed for the following constituents: <br /> 1. Nitrate <br /> 2. Nitrite <br /> 3. Ammonia <br /> 4. Nitrogen Isotope Ratio <br /> 5. Anions and Cations <br /> 2.4 Task 4—Surface Water and Sediment Sampling <br /> Water and sediment samples will be collected from the surface water discharge points and the <br /> receiving surface waters directly upstream and downstream of the discharge point;to assess <br /> the environmental impacts leaving Lima Ranch from point source discharge locations. <br /> Reference stations will be established for surface water environments in locations that have <br /> not been impacted by Lima Ranch operations in order to establish background levels of <br /> contaminants. <br /> The water and sediment samples will be analyzed for the following constituents: <br /> 1. Nitrate <br /> 2. Nitrite <br /> 3. Ammonia <br /> 4. Nitrogen Isotope Ratio <br /> 5. Anions and Cations <br /> Lima Ranch 4 of 17 <br /> Site Characterization Work Plan Addendum <br /> April 2008 <br />