Attachment 5 - Borrow Pit SOP.pdf

This document is a Standard Operating Procedure (SOP) for the GAAF Borrow Source Pit at Joint Base Lewis-McChord (JBLM), specifically for the Environmental Division of Public Works. The purpose is to provide guidelines for effectively managing borrow source resources, avoiding contaminated soil import, and minimizing ground water contamination and future cleanup cost liabilities. The procedure is restricted to permit holders, primarily construction companies and units, and requires compliance with various Washington Administrative Codes and environmental guidelines.

The SOP outlines a detailed 11-step process for soil pit usage, including permit requests, site visits, soil sampling, testing, and disposal. Key requirements include environmental safety protocols, such as equipment leak prevention, immediate reporting of spills, and strict soil sampling and testing procedures. Soils must be tested against MTCA (Model Toxics Control Act) levels, with soils exceeding these levels requiring off-site disposal within 90 days. The document specifies precise requirements for stockpile geometry, slope angles, and site disturbance, emphasizing safety and environmental preservation throughout the soil management process.