Site work and renovation of a civil project in Walsenburg, Colorado. Completed plans call for the renovation of a water / sewer project; and for site work for a water / sewer project.

BID SCHEDULE 1 - GENERAL - BASE BID consisting of: o New pre-engineered metal building canopy (1 LS) o Remove the accumulated water in the bottom of the Clarifier Tank, both Aeration Tanks, RAS troughs and effluent boxes of Train B (1 LS) o Electrical work associated with new canopy lighting (1 LS) o Installation of hydrogen sulfide resistant conduit seal-off fittings on all conduits entering and exiting the indicated electrical panels in the Main Process Building (1 LS) BID SCHEDULE 2 - CLARIFIER TANK B - BASE BID consisting of: o New Aero-Mod, Inc. scum skimmer air lift assemblies and piping beginning at the manifold connection point (24 EA) o New spare Aero-Mod, Inc. scum skimmer air lift assemblies (5 EA) o Remove the 1/2 " air hose from the RAS airlift assemblies and replace with new Aero-Mod, Inc. 1/2 " air hose from the air inlet fitting to the air isolation valve (1 LS) o Remove and replace all 1/4 " nylon pneumatic tubing associated with any and all valves in Train B from the pneumatic valve control panel in the blower room to the process air valve served (1 LS) o Remove and replace existing air hose and flexible elastomer coupling which connects air manifolds running along the clarifier tank walkways, including removal of existing hose and flexible elastomer coupling, installation of new Aero-Mod, Inc. (1 LS) o Removal and replacement of existing flange gaskets associated with the RAS airlift piping in Clarifier Tank B (1 LS) o Replace the 8" flexible elastomer coupling for the PVC distributor pipe in Clarifier Tank B at its connection to the wall pipe penetration (7 EA) o Remove and replace 12" wafer butterfly process air valve and pneumatic actuator for process valves SEQ-B1-1 and SEQ-B2-1 for upstream isolation valves of process valves SEQ-B1-1 and SEQ-B2-1 (2 EA) o Remove and replace 12" wafer butterfly process air valve and handwheel operator (2 EA) o Replace the existing flexible elastomer couplings for 1 1/2 " and 2" process air piping associated with the pneumatically actuated RAS valves of Clarifier Tank B (1 LS) BID SCHEDULE 2 - CLARIFIER TANK B - ADDITIVE ALTERNATES consisting of: o Remove and replace process valve actuators found to be inoperable after installation of new pneumatic tubing (7 EA) o Replace the 4" PVC RAS airlift assemblies in Clarifier Tank B from the existing RAS suction hood to the existing RAS trough connection (42 EA) o Replace the 8" PVC distributor piping in Clarifier Tank B (7 EA) J:\Walsenburg\WW\NOV CDO 04-13-2017\WWTF Repair Project\Construct\BidDocAvailability - Walsenburg.doc 2 BID SCHEDULE 3 - AERATION TANK B (2ND STAGE) - BASE BID consisting of: o Replace the stainless steel tapping saddles on the aeration header pipe, PVC air pipe and flexible coupling for each aeration diffuser assembly (22 EA) o Replace the 4" process air piping tapping saddles associated with the pneumatically actuated solids wasting airlift assembly of 2 ND Stage Aeration Tank B (1 LS) o Replace the 4" process air piping tapping saddles, PVC air pipe and flexible coupling associated with the pneumatically actuated RAS valves of Clarifier Tank B (1 LS) o Replace the existing flexible elastomer couplings for 1 1/2 " and 2" process air piping associated with the pneumatically actuated RAS valves of Clarifier Tank B New Aero-Mod, Inc. 2 3/8 " I.D. long body flexible elastomer coupling with stainless steel hose clamps and hardware connecting the PVC process air riser pipe to the stainless-steel process air riser pipe. (3 EA) New Aero-Mod, Inc. 1 7/8 " I.D. standard body flexible elastomer coupling with new stainless steel hose clamps and hardware connecting the stainless-steel process air pipe downstream of the RAS valve to the connection of the air manifold along the walkways over the Clarifier Tank B. (6 EA) BID SCHEDULE 3 - AERATION TANK B (2ND STAGE) - ADDITIVE ALTERNATES consisting of: o Replace the aeration header piping serving the Second Stage Aeration Tank B (1 LS) o Replace the 12" PVC aeration header pipe serving the First Stage Aeration Tank B (1 LS) o Replace the 4" PVC aeration header piping serving the WAS and RAS process air valves (1 LS) o Replace the existing PVC piping of the wall aeration diffuser assemblies (22 EA) o Replace the existing 2" threaded stainless steel isolation valve at each aeration diffuser assembly feed pipe (22 EA) o Replace the existing 8" PVC piping in the secondary aeration basin from the inlet screen to the 8" distributor piping serving the clarifier (7 EA) BID SCHEDULE 4 - AERATION TANK B (1 ST STAGE) - BASE BID consisting of: o Replace the existing flexible elastomer couplings for each removable aeration diffuser assembly connecting the vertical 2" PVC to 2" stainless steel aeration pipe (20 EA) o Replace the PVC tapping saddle on the 8" aeration manifold pipe, replace PVC riser pipe and flexible coupling for each aeration diffuser assembly (1 LS) BID SCHEDULE 4 - AERATION TANK B (1 ST STAGE) - ADDITIVE ALTERNATES consisting of: o Replace the existing 2" threaded stainless steel isolation valve at each aeration diffuser assembly feed pipe (20 EA) o Replace the existing PVC piping of the wall aeration diffuser assemblies (20 EA) o Replace the 8" PVC aeration header piping around the perimeter of the First Stage Aeration Tank B (1 LS) o Prepare and recoat the 18" ductile iron bypass piping within the First Stage Aeration Tank B (1 LS Separate sealed bids for the Wastewater Treatment Facility Improvements project consisting of multiple process piping replacements to repair components deteriorated by extended exposure to the elements including PVC pipe, fittings, connections to existing piping, PVC and stainless steel tapping saddle replacements, flexible coupling replacements, air hose replacements for airlift assemblies and valve and actuator replacements, all of which pertain to various air and liquid service process piping; as well as the erection of a pre-engineered metal building canopy over the treatment basins including primary framing members, secondary framing members, metal roof paneling, gutter and downspout systems, foundation anchorages on the existing treatment basin concrete walls, fabricated steel structural column tension ties, light fixtures and switching devices and incidentals of construction.