Alan Lehman is the Agricultural Project Manager for Shenandoah Riverkeeper, under Potomac Riverkeeper Network. Since 2009, Alan has been identifying and documenting farming practices that appear to be contributing excessive nutrients, bacteria, and sediment to rivers and streams in the Shenandoah Valley. Shenandoah Riverkeeper attempts to engage landowners and farmers at the most severe sites to begin a dialog about possible solutions. Alan brings 25 years of experience as an investigative photojournalist to this endeavor, as he patrols the rivers and back roads looking for threats to water quality in the valley. Alan also uses volunteer pilots to assist him with aerial reconnaissance missions to investigate hidden sites. He manages files on over 1280 farms in 8 counties. Alan has lived in the Shenandoah Valley for over 44 years.