LP-38 Berm Recertification Repair Project - Contract Drawings

This is a comprehensive set of contract drawings and specifications for the LP-38 Berm Recertification Repair project at Naval Station Norfolk, Virginia, prepared by the Naval Facilities Engineering Systems Command (NAVFAC) Mid-Atlantic. The project is identified under Contract Number N40085-22-D-0039 and Project Number 1766588. The drawings are dated January 14, 2026 (final set dated 1/28/26) and were prepared by Schmidt Consulting Group, with professional certification by W. Witham, P.E., and reviewed by J. Miller, P.E.

The project scope includes demolition of existing berm containment structures, installation of a new fuel-resistant impermeable liner system (minimum 30-mil fabric-reinforced geomembrane or 60-mil HDPE), expansion of berm volume to meet tank containment requirements, repair of the existing concrete tank apron and foundation, installation of a watertight storm sewer structure (minimum 72-inch diameter), construction of a French drain system with 4-inch HDPE perforated piping, and placement of new gravel fill (6 inches compacted sand and 8 inches crushed stone topping). The project also includes removal and replacement of existing security fence with new 6-foot chain-link construction fence featuring cable reinforcement, double outrigger configurations, and cantilever slide gates. Liner seams require field quality control testing including trial seams, non-destructive vacuum box or air pressure testing on all field seams, and one destructive seam test per 500 linear feet. The contractor must provide a 10-year material warranty for the liner system and a 2-year workmanship warranty, conduct an as-built topographic survey by a Virginia-licensed professional land surveyor, and implement environmental site protection and contaminated material management procedures in compliance with state and federal guidelines.