B09_-_Attachment_2_-_Amendment_1_-_1974_Drawings_-_ANPA_831_86113_0001.pdf

This document is a set of technical design drawings for alterations to the drainage and electrical systems at a federal facility. The drawings are prepared by the National Park Service, Office of Design Services, for the Anacostia Park Facility in Washington, D.C.

The technical plans include detailed specifications for multiple system components: electrical panel layouts and diagrams showing power distribution, emergency lighting systems with perimeter floodlights, drainage systems with cast iron pipe installations and floor drain configurations, grading and laying plans, concrete flooring and subsurface drainage details, and pavement section specifications adjacent to building walls. The drawings contain comprehensive notes on materials and installation requirements, elevation views, cross-sectional details, and plan views showing the spatial layout of all proposed systems. Key infrastructure details include cast iron pipe sizing and placement, foundation specifications, concrete work specifications, and drainage slope requirements. The document also includes a locality map showing the project site location and a cover sheet with revision information indicating modifications to existing systems. These technical drawings appear to serve as the basis for construction specifications and contractor bidding on renovation work involving both drainage infrastructure and electrical system upgrades at this federal park facility.