1967-05-29-AC-MIN.pdf - Laserfiche WebLink

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2. Appropriation Committee meeting, May 29, 1967 Art. 8 Exact cost of study will depend upon how much help the Town can supply in counting traffic, etc. In addition to making the study and proposing improvements, an engineer will have to follow its progress at the DPW. This is likely to take many hours. Art. 9 North Lexington Sewer, from Pumping Sta. to Hamilton Ad. 1938 — Capacity was 1200 gal. per min. 1956 — enlarged to 2,000 gal/min. 1953 — Bedford allowed to pump 800 gal/min from its Shawsheen Rd. pumping station to our gravity main, then to our pumping station and to the Hamilton Rd. end of our gravity line. 1959-60 — capacity was exceeded during periods of heavy rainfall, causing sewage to back up into Tophet Swamp and Bedford. IfJ 1960 Study by Whitman and Howard recommended finding source of infiltration and sealing from inside. If infiltration could not be stopped, a new force main (20") to Hamilton Rd. would be U required. Beyond that a relief sewer and new pumps in the pumping station. Inspection of lines (April — June 1964) showed infiltration was not coming from joints in pipe. Most of the infiltration is thought to be caused by pumping water from wet cellars into the sewer system. Bedford was exceeding the 800 gal/min agreed upon. 1965 Art. 16 appropriated $166,000 for force main from pumping station to Hamilton Rd. The 20" size planned was based upon Bedford's contributing 800 gal/min. Now a larger main is needed for part of this line. Bedford will construct a 20" force main down Great Rd. to connect at Ledgelawn. Lexington should construct 20" force main to this point, then a 30" main to Hamilton Rd. Total cost $194,000. Additional funds needed $28,000. Capacity will be increased to 3000 gal/min, at pumping station. Bedford will pay part of the cost. Town is eligible for 74-80% state and federal aid ( has already had a 30% grant approved). Future need — probably to be requested March 1968 Construction of relief sewer from Hamilton Rd. to MDC line and new pumps for pumping Station. pumps may cost about $100,000. Relief sewer will cost about $410,000, of which Lexington's share will be about $185,000. The remainder will be paid by Bedford and the Air Force, which also uses this portion. Air Force wishes to increase from present 625 gal/min to 1500 gal/min. Connection to MDC. Every connection to MDC sewer costs extra. MDC will deduct from Lexington's bill and add to Bedford and Air Force for their share; Bedford's cost will be determined by amount coming into their pumping station. Art. 10 Massachusetts Ave. $14,000 requested. Chapter 90 money can't be used on this strethh because it can't be built according to state standards with tree saved. $12,000 of Chapter 90 money will remain unspent, can be used on future project. Art. 11 Hydrological study — Counsel can find no legal way to do this. Arlington and Lexington Selectmen want to find best use for this land. Art. 12 Instructional Pool $10,000 additional requested. Estimates used to determine total needed in March assumed a 6 hour turnover was sufficient and assumed that additional equipment