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I I I I I I I I I I I I I I I I I I I ~.~ .'~ r'- CJ ~near the fault zone which separates the A1amosa Horst and the Monte Vista Graben. As such, the leakage rates implied by this analysis may be indicative of vertical ground water movement which is characteristic of faults related to the Rio Grande Rift, but not characteristic of the Valley in general. It should be kept in mind that the A1amosa Geothermal Well is located 2.4 RESULTS OF DEEP-WELL LOGGING AND TESTING 2.4.1 Characteristics of HSU-2 Though HSU-2 was not the primary target of these studies, the deep-well logging and testing generated information regarding that HSU. Following are the characteristics of HSU-2 which were noted during the logging and testing: 1. The transmissivity of HSU-2 at the Hooper Pool Well is approximately 132,000 gpd/ft. 2. The transmissivity of HSU-2 at the Carroll Well and the Owens Well were measured to be in the range of 4500 to 13,900 gpd/ft, though these values may not be reflective of true aquifer conditions, due to possible encrustation of slots in the well casing. 3. The DS concentration of water predominantly from HSU-2 at the Hooper Pool Well is approximately 340 mg/L. 4. The DS concentration of water predominantly from HSU-2 at the Carroll Well and the Owens Well is approximately 400 mg/L. 2.4.2 Characteristics of HSU-3 The logging and testing performed in these studies indicate that there is substantial degradation in water quality and transmissivity from HSU-2 to HSU- 3. This was seen at the Carroll Well and the Alamosa Geothermal Well. The temperature log and the downhole flowmeter (spinner) log of the Carroll Well indicated the change, as did the neutron and gamma log of the A1amosa Geothermal Well. Due to problems in the condition of the Hooper Pool Well, this could not be proved or disproved at that location. 2-12