This document describes how to apply to the Texas Commission on Environmental Quality's Analytical Method Modification Program, in order to obtain approval to modify analytical reference methods used to generate data for regulatory purposes.

This best practices guide describes how designing a building to include daylighting can save energy and utility costs (especially energy costs for electric lighting) while improving productivity and morale among a building's occupants. Several examples are given of the effective use of daylighting in new laboratory buildings. The publication is one of an ongoing series for''Laboratories for the 21st Century,'' a joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy Federal Energy Management Program. It is intended for all those who plan, design, and construct public and private-sector laboratory buildings.

This publication is one of a series of best practices guides for ''Laboratories for the 21st Century,'' a joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy Federal Energy Management Program. It is intended for all those who plan, design, and construct public and private-sector laboratory buildings. Laboratory buildings typically consume 5 to 10 times more energy for heating, cooling, and fans than most office buildings, because they need to be ventilated so well, primarily for safety reasons. This publication describes how using air-to-air energy recovery methods-such as enthalpy (desiccant) wheels, heat pipes, or run-around loops-allows laboratory building designers to specify smaller heating and cooling systems. This in turn reduces the total amount of energy they use.