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surface to a depth of about 1050 feet. The long string <br /> casing is 7 inches in diameter and if completed in the <br /> Primary Injection Formation, it will run from the ground <br /> surface to a depth of about 5300 feet. If the well is <br /> completed in the Alternate Injection Formation, the long <br /> string casing will run from the ground surface to about <br /> 9500 feet. <br /> As required by 40 CFR §146. 12, the wastewater is to be <br /> injected through tubing with a packer set near the bottom <br /> of the long string casing. The tubing will be a 3-1/2 <br /> inch outside diameter tubing and will be equipped with a <br /> tension-set packer set at 100 feet above the injection <br /> zone. After the packer is set, the annulus will be <br /> pressurized and the pressure will be recorded <br /> continuously to detect leaks. <br /> The draft permit requires the permittee to construct the <br /> injection well in accordance with EPA regulations for <br /> Class I injection wells. The well must inject beneath <br /> the lowermost USDW and the well must be cased and <br /> cemented to prevent the movement of fluids into or above <br /> USDWs. <br /> Additionally, injection between the outermost casing <br /> protecting underground sources of drinking water and the <br /> well bore is prohibited. The maximum injection rate <br /> shall be limited to 150 gallons per minute (gpm) . <br /> The draft permit requires that the annular space between <br /> the tubing and the casing be filled with fresh water <br /> containing bacteria and corrosion inhibitors or similar <br /> nonhazardous corrosion inhibiting fluid. <br /> The annular pressure will be limited by the permit to a <br /> minimum operating value of 100 psig for leak detection. <br /> The permittee is required to continuously monitor the <br /> fluid level in the annular space. A total annular fluid <br /> volume change exceeding two gallons at Standard <br /> Temperature and Pressure (STP) would constitute a <br /> significant leak. The permittee is required to notify <br /> EPA when the total annular fluid volume varies from the <br /> above range. <br /> Maintaining a positive annular pressure will allow for <br /> continuous mechanical integrity monitoring of the casing, <br /> tubing, and packer. The draft permit specifies that the <br /> EPA, Region 9 , be notified within 24 hours of <br /> noncompliance. This verbal notification of noncompliance <br /> must be followed by written notice within five days. <br /> Well repair and mechanical integrity testing are required <br /> if the problem is found to be within the well . <br /> 10 <br />