ATTACH_4_-_Construction_Schedule.docx

This is a construction schedule attachment for the GCI Pollyanna #2 Acid Mine Drainage Remediation Project, a Department of the Interior Office of Surface Mining Reclamation and Enforcement solicitation (140S0326R0001). The schedule outlines a 15-day construction timeline for implementing acid mine drainage remediation infrastructure at the Pollyanna #2 site.

The construction activities include mobilization, site clearing and grubbing, pond dewatering, and installation of water treatment components such as HDPE 8-inch collection pipe, concrete flow spreaders, seep steps, and high calcium limestone (AASHTO #3) dosing systems. The work also encompasses construction of a concrete vault for a 10-inch dosing siphon and a settling/oxidation pond with appurtenances including two 4-inch outlet pipes, two 2.5/3-inch orifice plates, and baffle curtains. The schedule includes 50 feet of 6-foot-tall wetland seeding and planting, permanent erosion control fencing installation, and equipment removal. The document appears to be an incomplete template allowing contractors to add additional pages as needed for detailed scheduling and phasing of construction activities.