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History Well 21-4DX <br />• • Drilling fluid consisted of clear water, with a light bentonite and polymer <br />mud additive. <br />Well Development <br />• Developed well by airlifting and bailer. Removed t 2,000 gallons prior to <br />sample collection: <br />Notes <br />Monitor well 21-4DX replaced the dissolution surface well that was lost in 21-4 <br />due to a stuck pump and subsequent unsuccessful fishing job. <br />• <br />• <br />