PCA Superfund Site Groundwater Remediation
From the early 1950s through 1974, a paper company discharged nine billion gallons of wastewater from its neutral sulfite semichemical cooking process (black liquor) into seepage lagoons. An underlying aquifer was contaminated over an area of approximately one square mile with lignins, arsenic, and other inorganic compounds. The groundwater naturally vents to Manistee Lake. FTCH completed the remedial investigation/feasibility study (RI/FS) and provided the basis for a natural attenuation remedy. The USEPA record of decision (ROD) supported the natural attenuation remedy. FTCH currently performs annual sampling of the groundwater and surface water and performs the reporting and data analysis obligations required under a consent agreement.