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ATTACHMENT I:FORMATION TESTING PROGRAM <br /> sampling and analysis of fluid present in the injection zone at the new well following <br /> construction. <br /> Formation water samples were collected from the Domengine Formation(i.e. the injection <br /> zone for the LEC-1 well) at the adjacent STIG-1 well when it was installed in 1993. The <br /> results of the laboratory analyses of that representative sampling indicated that the natural <br /> formation water had a TDS of 14,066 mg/L,consisting primarily of sodium (3,200 mg/L), <br /> chlorine (7,000 mg/L)with calcium (761 mg/L),magnesium(86 mg/L),and potassium <br /> (46 mg/L) and trace amounts of other naturally occurring dissolved metals. Other ions <br /> present included silica dioxide (Si02) at 16.5 mg/L,bicarbonate (HCO3) at 62 mg/L and <br /> sulfate (SO4) at 8.0 mg/L. Radiological activity was not reported in the original samples <br /> from the formation.Table 1-1 summarizes these and other native water quality parameters <br /> of the Domengine Formation. <br /> TABLE 1-1 <br /> Natural Domengine Formation Water Quality at STIG-1 <br /> Parameter Measurement Units <br /> Bicarbonate 62 mg/La <br /> Chloride 7,000 mg/L <br /> Calcium 761 mg/L <br /> Magnesium 86 mg/L <br /> pH 7.85 S.u.b <br /> Potassium 46 mg/L <br /> Silica Dioxide 16.5 mg/L <br /> Sodium 3,200 mg/L <br /> Sulfate 8.0 mg/L <br /> Total Dissolved Solids 14,066 mg/L <br /> Total Suspended Solids 19 mg/L <br /> Specific Conductance 17,780 pmhos/cm° <br /> amilligrams per liter <br /> bstandard units <br /> °microsiemens per centimeter <br /> Source: NCPA, 1993 <br /> Domengine Formation water samples produced from the perforated interval (proposed to <br /> be roughly 4,220 to 4,575 feet bgs) of the LEC-1 well will be collected by the drilling <br /> contractor during a production test to be performed following completion of the well. Those <br /> samples will be obtained following construction and development of the new well. The well <br /> will be pumped to remove a quantity of water equal to at least three times the volume of <br /> fluids lost during drilling and any development and stimulation activities. Regardless of the <br /> amount of water to be produced prior to sampling,pumping will continue until field <br /> SAC/371322/082550025(ATTACH MENT-I.DOC) 1-3 <br />