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ATTACHMENT L:CONSTRUCTION PROCEDURES throughout the well depth and repeated through the injection interval. The sequencing and interpretation of these logs is described in greater detail in Attachment I:Formation Testing Program. Lithologic Logs A lithologic ("Mud") log will be prepared during the drilling of the LEC-1 well. This log, included,will graphically describe at a scale of 2 inches= 100 feet the lithologic units found within the 30-foot to 4,575-foot interval of the LEC-1 well. The log will be prepared by visually describing the rock cuttings brought to the surface during the drilling operations via the mud circulation system.Since no cores are anticipated to be collected from the borehole,only cuttings and geophysical logs will be used to prepare the lithologic log. Final Descriptive Log Interpretation Report A descriptive log interpretation report will be prepared to describe in detail the Domengine Formation interval in the LEC-1 well upon completion of construction. That report will list, for each 2-foot depth interval between the depths of 3,642 feet and 4,575 feet,the calculated shale and sand volumes,water saturation,the porosity values as independently measured by the neutron and density logging tools,the apparent resistivity of the formation water, and provide a cross plot-derived ("best choice") porosity value for each interval. A compact disk containing the same information at single foot intervals,will be prepared and used to calculate a (NaC1 equivalent) salinity value at each 1-foot depth interval. A listing of those results obtained throughout the proposed 4,230-foot to 4,570-foot completion interval within the Domengine Formation will be included in the submittal at the end of construction. Deviation Checks Single shot deviation checks will be made at 10 equidistant or equal spaced depths in the well bore,ranging from 500 feet to 4,575 feet (proposed total depth). Each deviation check will be individually reported, and a maximum allowable deviation from vertical by more than 11/2 degrees will be allowed. The absolute allowable maximum lateral displacement of the well at total depth will be 100 feet. If there is concern about deviation in the well bore, a gyroscope survey will be run. Proposed Well Completion Injection Interval Since subsurface conditions at the LEC-1 well are anticipated to closely match those at the adjacent STIG#1 well site,it is anticipated that the Domengine Formation sands will be poorly consolidated and flowing at the LEC-1 well. The proposed completion of the LEC-1 well will be nearly identical to that of the STIG #1 well: • Perforate the injection interval from 4,230 to 4,575 ft bgs using a down-hole perforation gun with 120 degree phasing and resulting in 0.3-inch diameter perforations every 4 inches SAC/371322/082560019(ATTACH MENT-L.DOC) L-3