Note:The number of dwelling units is the criterion to be used to determine whether installation is required to be underground. In order to ascertain the number of dwelling units, it is necessary to consult the approved subdivision map to determine how many dwelling units are planned. Each lot shown on the map should, in the case of a single family dwelling, be considered to contain one dwelling unit unless there is sufficient contrary evidence to render it unlikely that each lot will contain a separate dwelling unit (e.g., a foundation is constructed occupying two lots). The measurement of trench footage should be the shortest distance required to serve the homes within the subdivision, consistent with the utility's obligation to provide safe and adequate service.
In cases where overhead installation would be permissible in accordance with condition (3) (paragraph [3] of this subdivision) except that less than five years have elapsed and the utility has reason to believe that the subdivision will not be developed sufficiently soon to permit the orderly utilization of underground facilities installed to serve the initial subscriber(s), the utility may petition the commission to allow overhead installation, which petition shall set forth the relevant economic, engineering and environmental factors.
Note:The term final approval refers to authorization of a residential subdivision by governmental authorities having jurisdiction. A residential subdivision is finally approved when all necessary governmental consents have been obtained to allow the developer of the subdivision to sell lots and/or build residences. If a subdivision needs only be approved by a county health department the final approval of that agency, in accordance with its regulations, when received is final. If the town planning board must give its consent as well, final approval is not obtained until the board and the health department have completed their processes of authorization. A section of a subdivision is the smallest unit of a subdivision given final governmental approval. If, for example, the developer of a subdivision submits a preliminary plan covering 100 lots but initially only 50 are finally approved, the 50 lot portion is a section of the subdivision. If the subdivision contains sections, the percentage of lot sales required by condition (3) must be met by every section of the subdivision and not just the section in which the distribution facilities are to be installed.
N.Y. Comp. Codes R. & Regs. Tit. 16 § 604.3