1980-09-24 Regular Meeting - Laserfiche WebLink

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H. CARLOS SMITH ENGINEERS AND SURVEYORS, INC. PHONE A/C 713 471-4226 • 718 SOUTH BROADWAY P. O. BOX M LAPORTE, TEXAS 77571 22 September, 1980 Hon. Mayor and City Council City of La Forte P. 0. Box 1115 La Porte, Texas 77571 Re: Sanitary Sewage Force Main - Lomax Area - Gentlemen: Job No. 1286-80 The bids that were recieved on the above referenced project have been tabulated and reviewed and the tabulation is forwarded herewith for your use and review. The bids were well within our estimates and am quite satisified with all of the interest shown by the contractors on this project. We had 7 sets of plans out to prospective bidders with one bidder returning his plans without bidding and 5 bids were recieved. Alternate bids were taken on the 12" force main for two classes of pipe, -and another alternate bid was taken for a 16" force main. • Population projections, using the same rate of growth for the Lomax area as for the period 19?0-80, indicate that the 12" force main will adequately serge the area until about 1988 or for a period of 8 years. Future growth is difficult to predict for any area, but this area consists primarily of small acreage tracts that are not conducive to single family subdivision development. The possibility of development of these tracts into multifamily projects does exist, but the present area populace is strongly opposed to this type of development. The existing pumps could handle this flow into Lift Station No. 1. The 16" force main was considered as an alternate, primarily because this size line will handle the total flow which the lift station No. 1 could relieve from the 2 existing 15" influent lines. The 16" force main would serve the area until about the year 2000 or for a period of about 20 years, again based on the projection of growth for the last 10 years. The pumps in this lift station No. 1 would have to be replaced when the flow exceeds their present capacity. The two 15" influent lines into this lift station No. 1 cannot handle the total ultimate flow when the entire area is developed. Some consideration will have to given to future relief of this lift station. • The areas to the East of 26th. Street and South of North "H" Street and West of 26th. Street are not presently served by sanitary sewers. At such time as these areas are served, an intersecptor sewer line could be constructed to relieve some of the flow to Lift Station No. 1.