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3.0 ALTERNATIVES EVALUATED Several alternatives to rehabilitate/stabilize the inlet ditch were considered to compare feasibility and estimated implementation costs. The alternatives were developed following a site inspection of the area. The alternatives considered include: • Alternative 1— Existing condition Stabilization �• Alternative 2— Reconstruction Along Existing Alignment �' • Alternative 3— Reconstruction Along New Partial Alignment • Alternative 4— New Conduit Along North Alignment A brief description of the alternatives is provided below. Alternative 1— Stabilization • Stabilize existing inlet structures and approach ditch • Cut back ditch side slopes, reclaim the side slopes and fence �l- Alternative 2— Reconstr�uction Along Existing Alignment �f'�S+PCPC �'C� �4-��' �" • Demolish and re-construct existing inlet and drop structures . Remove rubble in inlet ditch • Cut back ditch side slopes • Fill areas in existing ditch channel bottom (as required) • Construct new CIP concrete inlet chute (IOH:I V minimum longitudinal slope) and stilling basin (on fill; final design to balance cut and fill) Alternative 3— Reconstruction Along New Partial Alignment Similar to Alternative 2 except on a new alignment. This will require a new inlet structure off of the ditch instead of re-construction of the existing inlet structures. This alternative does not require as much fill or removal of debris as Alternative 2. However, it does require the acquisition of a new easement or the purchase of additional land. • Construct a new CIP concrete inlet structure off of the Poudre Valley Canal. • Cut back ditch side slopes, reclaim the side slopes and fence. • Fill areas in the existing ditch channel bottom (as required) • Construct a new CIP concrete inlet chute (approximately l OH:I V longitudinal slope) and stilling basin (in cut) • Construct two (2) new four (4) foot high CIP concrete ar grouted riprap drop structures.