28 A surveyor in establishing in a concession in a double front township a side line of a half lot that was not surveyed in the original survey shall proceed as follows: 1.  If intended in the original survey, the surveyor shall establish the side line on the same astronomic course as the boundary line of the concession at the end from which the lots are numbered, or, if such boundary line was not surveyed in the original survey because it was wholly broken by a lake or river and if intended in the original survey, the surveyor shall establish the side line on the same astronomic course as the boundary line at the other end of the concession, but where a proof line was surveyed in the original survey, the surveyor shall establish the side line on the side of the proof line that is farthest from the end of the concession that is intended to govern the course of the side line on the same astronomic course as the proof line. 2.  If not intended to be established on the same astronomic course as the boundary line at either end of the concession and if intended in the original survey, the surveyor shall establish the side line at the angle with the boundary line at that end of the concession from which the lots are numbered as shown on the original plan and field notes, or, if such end was not surveyed in the original survey because it was wholly broken by a lake or river and if intended in the original survey, the surveyor shall establish the side line at the angle with the boundary line at the other end of the concession as shown on the original plan and field notes, but where a proof line was surveyed in the original survey, the surveyor shall establish the side line on the side of the proof line that is farthest from the end of the concession that is intended to govern the course of the side line on the same astronomic course as the proof line. 3.  If the end boundaries of a concession were not surveyed in the original survey because they were wholly broken by a lake or river, the surveyor shall establish the side line at such angle with the concession line as shown on the original plan and field notes, or, if parts of the concession line have been surveyed on different courses, the surveyor shall establish the side line at such angle with the course of each of the parts as shown on the original plan and field notes, or, if such angle is not shown on the original plan and field notes, the surveyor shall establish the side line at such angle with the concession line as the Minister may direct. 4.  If the end boundaries of the concession were not surveyed in the original survey because they were wholly broken by a lake or river and a proof line was surveyed in the original survey, the surveyor shall establish the side line on the same astronomic course as the proof line. 5.  If the end boundaries of the concession were not surveyed in the original survey because they were wholly broken by a lake or river and two or more proof lines were surveyed in the original survey, the surveyor shall establish the side lines that are between the township boundary from which the lots are numbered and the second proof line from such boundary on the same astronomic course as the first proof line from such boundary, and the surveyor shall establish the side lines that are between the second proof line and the third proof line from such boundary on the same astronomic course as the second proof line, and the surveyor shall establish the side lines that are between the third proof line and the fourth proof line from such boundary on the same astronomic course as the third proof line, and so on through the concession. 6.  If the concession is wholly broken on one front by a lake or river and no posts were planted in the original survey on the banks of the lake or river to regulate the widths in front of the half lots, the surveyor shall establish the side lines of the broken half lots according to this section from the rear corners of the half lots on the unbroken front of the concession. 7.  If the concession is wholly broken on both fronts at either end by a lake or river and no posts were planted in the original survey on the banks of the lake or river to regulate the widths in front of the half lots broken thereby, the surveyor shall establish the side lines of such broken half lots according to this section from points on the rear boundaries of the half lots determined by measuring along the rear boundaries of the half lots the widths of the half lots as intended in the original survey from the intersections of the last ascertainable side lines of the half lots with the rear boundaries of the half lots. 8.  If the concession is partly broken on one front by a lake or river and the lake or river does not extend to either end of the concession and no posts were planted in the original survey on the banks of the lake or river to regulate the width in front of the half lots broken thereby, the surveyor shall establish the side lines of such broken half lots according to this section from points on the rear boundaries of the half lots determined by dividing proportionately as intended in the original survey the distance between the intersections of the last ascertainable side lines of the half lots on both sides of the lake or river with the rear boundaries of the half lots. 9.  If the concession is partly broken on either front at either end but not broken at the end of the rear boundary of the half lots by a lake or river and no posts were planted in the original survey on the banks of such lake or river to regulate the widths in front of the half lots broken thereby, the surveyor shall establish the side lines of such broken half lots according to this section from points on the rear boundary of the half lots in the unbroken front determined by dividing proportionately as intended in the original survey the distance between the end of the concession and the last ascertainable side line of the half lot on the front of the concession so broken. 10.  If the concession is partly broken on either front at either end by a lake or river and also broken at the end of the rear boundary of the half lots and no posts were planted in the original survey on the banks of the lake or river to regulate the widths in front of the half lots broken thereby, the surveyor shall establish the side lines of the broken half lots according to this section from points on the rear boundary of the half lots in the unbroken front determined by measuring along such rear boundary the widths of the broken half lots as intended in the original survey from the intersection of the last ascertainable side line of the half lot on the front of the concession so broken.  R.S.O. 1990, c. S.30, s. 28.