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1953, attached hereto and "by this reference incorporated herein, the following: (a) Approximately 530 LP of 8n cast iron water mains. (b) Approximately 2,980 LF of 6W cast iron water mains. (c) Approximately 30 LP of 6” cast iron fire hydrant connections. The cost of constructing said water mains (exclusive of cost of constructing said 30 LP of 6" fire hydrant connections, is the agreed sum of #11,840.00* 2. Said water mains shall be constructed of 6” and 8n Class 150 B & S cast iron pipe and shall be in accordance with Federal specifications W P 421 Type 1. All joints shall be cement. All fittings shall be new, all bell cast iron equal to ASA Standard Class 250. All valves shall be double disk, parallel seat bronze mountings conforming to AWWA standards, not less than 175 lbs., and all valve boxes shall be of cast iron of appropriate size for each valve* Unless otherwise approved by a duly authorized represen­tative of the Company, all pipe valves and fittings shall be manu­factured by the Pacific States Cast Iron Pipe Company or Mueller Company. All pipe lines shall be chlorinated in accordance with AWWA specifications, shall be subject to the approval and acceptance of State and City Health Authorities, and shall be constructed at an elevation to be designated by a duly authorized representative of the company, but in no event shall there be less than 36” of covering over such water mains. All workmanship, material and installation of said water mains shall be subject to the approval sis i A -/ 3 *