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Energy & Utility

2H Far Rockaway Substation to 2AR Arverne Substation and 2AR Arverne Substation to 2G Rockaway Beach Substation

Far Rockaway, NY

Project Overview

MFS Consulting Engineers & Surveyors, DPC (MFS) was contracted by POWER Engineers, Inc. to provide professional geotechnical engineering services in support of the PSEGLI Far Rockaway Substation to Arverne Substation and the Arverne Substation to Rockaway Beach Substation projects.

Far Rockaway, NY

Project Details

PSEG-LI was constructing an underground 33kV transmission circuit along two (2) proposed routes; the Far Rockaway to Arverne alignment approximately 2.5 miles long and the Arverne to Rockaway Beach alignment approximately 3 miles long.

In support of the proposed development along the two (2) alignments, MFS coordinated a field subsurface investigation with our boring subcontractor to drill eleven (11) test borings at proposed manhole locations to depths of approximately 40 feet below grade. In addition, temporary monitoring wells were installed within each of the completed borings. MFS conducted instantaneous change in head (slug) tests within the monitoring wells to gather information on the groundwater recharge rates.

During the subsurface investigation, MFS geotechnical team observed the subsurface conditions and generated test boring logs that included soil classifications in accordance with the Unified Soil Classification System and the New York City Building Code, groundwater observations, action of equipment, and other noteworthy observations. The boring logs showed borehole and sample diameters and depths at which drilling or sampling methods or equipment change. Boring logs showed total depth of penetration, blow counts, groundwater level, and types of sampling. During slug tests, MFS monitored the change in water level over time during falling head and rising head tests to calculate groundwater recharge rates. Upon completion of the subsurface investigation, laboratory testing was performed by an accredited testing laboratory to classify soils and obtain geotechnical physical characteristics for soils.

Upon completion of the subsurface investigation and geotechnical laboratory testing, MFS prepared a Geotechnical Engineering Data Report for each alignment which included the results of the subsurface investigation and associated laboratory testing and an as-drilled boring location plan. In addition MFS provided gross allowable bearing capacities at each of the proposed manhole structure locations.

Stats

  • Owner:
    PUBLIC SERVICE ELECTRIC AND GAS – LONG ISLAND (PSEG-LI)

Services Provided

  • MFS provides professional geotechnical engineering services including geotechnical investigation and subsurface exploration, soil engineering services, and permeability testing.