64 Pa. Stat. § 108
In making any survey by any deputy surveyor, he shall not go out of his proper district to perform the same, and that every survey made by any deputy surveyor without his proper district shall be void and of none effect. And the surveyor general and his deputies are hereby severally directed and enjoined to locate and survey, or cause to be located and surveyed, the full amount of land contained and mentioned in any warrant, in one entire tract, in such manner and form as that such tract shall not contain in front on any river, more than one-half of the length or depth of such tract; and to conform the lines of every survey in such manner as to form the figure or plot thereof, as nearly as circumstances will admit, to an oblong of three times the breadth thereof. And in case any such survey should be found to contain a greater quantity of land than is mentioned in the warrant on which it shall be made, so that such excess be not more than one-tenth of the number of acres mentioned in such warrant, besides the usual allowance for highways, the return thereof shall nevertheless be admitted under the said warrant: Provided, The party procuring such return to be made shall forthwith pay to the receiver general of the land office, the price or value of such excess or overplus land, at the same rate at which he paid for the land mentioned in the warrant.
64 P.S. § 108