Earth excavation: Stripping dam base, 85,200 cubic yards, at $0.30 $25,560 Core wall trench, 26,000 cubic yards, at $1 26,000 Rock excavation, 10,600 cubic yards, at $2 21,200 Rock fill in dam, 214,000 cubic yards, at $1.25 267,500 Rubble masonry, 24,500 cubic yards, at $5 122,500 Concrete, 30,500 cubic yards, at $6 183,000 Gate chambers and tunnels 65,000 Reconstruction of highways 142,400 Reconstruction of railroads 815,000 Real estate 1,435,000 ---------- 3,103,160 Engineering and contingencies 336,840 ---------- 3,440,000 Protection of Newark pipe line 20,000 ---------- Total cost 3,460,000 The final recommendation of the committee involves the consideration of two projects for flood storage, one on Great Piece Meadow and the other above Mountain View on the Pompton. In making such recommendations the committee is of the opinion that it must take into account matters of engineering policy with regard to future needs and contingencies, as well as the bare necessities of the present. If there were none other than the single problem of prevention the committee would advise the construction of the reservoir on Great Piece Meadow by reason of its smaller probable cost and its equal efficiency. It is plain, however, that there are many important features of public policy involved in the subject at hand. Population in the valley of the Passaic is developing so rapidly that in only a few years the present sources of water supply will be inadequate. The whole subject of water supply for northern New Jersey demands immediate consideration, and it would not be wise to take up the matter of prevention of flood damage in the Passaic without basing the value of every project upon its adaptability for use in future water-supply needs.