Hempstead Lake State Park Installation of New Medium Voltage Service & Transformer

About this Project

LKB was retained by New York State Office of Parks, Recreation & Historic Preservation to provide electrical engineering services for this project. The scope involved evaluating additional load requirements as a result of planned infrastructure improvement projects at Hempstead Lake State Park. Services also included survey of the existing electrical service to assess if any service upgrade was required. Design documents for this service upgrade were then provided.

The initial assessment established that the existing single phase 15 KV transformer had to be replaced by a three phase 15 KV transformer.

The nearest available three phase 15 KV PSEG LI service drop was on the north side of Southern State Parkway (opposite side of the proposed new transformer installation). To feed the required three phase 15 KV transformer, a new 15 KV service had to be brought underneath Southern State Parkway.

LKB started coordination with PSEG LI and presented preliminary design documents to PSEG LI, New York State Parks, and New York State DOT for approval. After approval of the preliminary design, the coordination with these agencies continued during final design through project completion.

Final design documents, in addition to electrical plans, included details such as directional drilling underneath Southern State Parkway, high voltage manhole installation, electrical testing requirements, PSE&G LI outage, construction phasing, contractor staging area identification high voltage cable splicing, conduit trenching etc. LKB was also responsible for obtaining all the necessary DOT permits required for directional drilling underneath Southern State Parkway. A construction cost estimate was also developed as part of this project.

Once this new 15 KV service was installed, LKB prepared design documents for a separate building that required electrical and HVAC improvements at the park.

Our staff provided construction support and services such as coordination with PSEG LI and DOT, equipment catalog cut approvals, shop drawing review, RFI management, field changes and additional work scope review, and review.


Hempstead, NY


NYS Office of Parks, Recreation & Historic Preservation



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