03-17-1994 Public Hearing and Regular Meeting of the La Porte Planning and Zoning Commission

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® • Page 5 of 5 • planning & Zoning Commission Meeting of April 21, 1994 Development Ordinance Variance Request Another problem that has occurred is displacement or shifting of sewer lines. Although sewer mains are generally buried deep enough to prevent actual crushing or breakage, under conditions similar to those described above, the pressure transmitted through the ground can be sufficient to affect a sewer line. If the pressure happens to be exerted near a joint or tap, it can cause the line to shift, opening small leaks. this allows ground water and/or stormwater to seep into the sewer mains. Water infiltration during heavy rains is a serious problem for the City's sewerage treatment plant. While this problem is much less prone to occur where modern materials are in use, the Bayfront survey tract contains some of the oldest utility infrastructure in the City. It is, in most cases, the age and in some cases, relative fragility of the infrastructure that causes susceptibility to the problem described. Finally is the issue of maintenance. Once surfaced, the alley becomes a public road. This means that the City becomes • responsible for maintenance. The City akeady maintains a very serviceable road system that provides adequate access to this block. Permanent paving, due to the periodic need to excavate underground utilities, is not suitable in an alley. Gravel, shell and crushed rock require a higher degree of maintenance, otherwise problems such as those noted above can develop. The maintenance situation would be further compounded and complicated due to the higher rate of repair necessary for the older lines. Given the presence of the existing street system and the relatively few number of properties that could be served from the alley, the maintenance burden which would be placed on the City would be unreasonable. Creating a situation in which these types of mishaps can occur would be contrary to the goals and purpose of the Development Ordinance. It would also be detrimental to the safety and • welfare of the surrounding neighborhood and potentially injurious to adjacent properties. Conclusion: Based on the facts and considerations noted above, staff recommends denial of this variance request.