N.J. Stat. § 58:14-11
Upon receiving a copy of such resolution authenticated by the clerk or other like officer of one or more of such municipalities, the commissioners shall forthwith prepare the maps, plans, specifications and estimates so requested, and copies thereof shall be delivered by the clerk of the commissioners to each of the clerks or other like officers of all the municipalities lying in whole or in part within the district. An accurate record of the time and manner of the delivery by him of such copies to the clerks of such municipalities shall be made by the clerk of the commissioners and entered upon the minutes of the commissioners. A like record shall be kept by the clerks of the municipalities and be entered upon the minutes of the boards or bodies having charge of the finances in such municipalities respectively. The commissioners, in preparing the maps, plans and specifications as herein provided, and in making the estimate of the sewage capacity required for each municipality, shall have regard both to the area and population to be provided for, making provision, however, for not more than ten per cent of the factory waste and excluding all waste from gas works and all substances or discharges which may injuriously affect the integrity of the sewer when constructed.
N.J.S. § 58:14-11