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Being a point distant 500 feet measured northerly and perpendicular to the centre line of runway 07-25 from a point distant 4,580.43 feet measured westerly along the centre line from the intersection of the said centre line with the easterly boundary of the Northeast quarter of Section 21, Township 88, Range 8, West of the 4th Meridian, and which said intersection is distant southerly 74.53 feet, more or less, from the northeast corner of said quarter section.
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