Presentation on theme: "Loudoun Water’s Potomac Water Supply Program RWT - Pre-Bid Meeting December 18, 2013."— Presentation transcript:
Loudoun Water’s Potomac Water Supply Program RWT - Pre-Bid Meeting December 18, 2013
Introduction Bidding Overview Bid Documents, Supplementary Conditions, Permits, Bid Form Overview- RWT Design RWT Main, North and South Alignments, Site Conditions & Geotechnical, Quarry Bypass Vault, DVP Easements, Cathodic Protection Questions/Answer Period Close AGENDA Statements made or material presented at Pre-Bid Conference shall not modify or amend the Contract Documents. Any amendments shall only be by written Addenda.
DATES SIGN IN SHEET QUESTIONS DURING BID PROCESS ADDENDUM INTRODUCTORY REMARKS
January /February 2014 RWI/RWPS NTP Anticipated Program Construction Schedule Mid-year 2016 RWI/RWPS Substantial Completion March/April 2014 WTP NTP December 2015 RWT Substantial Completion Phase 1 April 2017 Final Completion All Program Elements, Including Phase 1/2 of RWT May 2014 RWT NTP
Bidding Overview - Highlights Bidding Documents Supplementary Conditions Working Hours – Articles 6.02.B and 18.01.A Exhibits A, B, C, and F Securing final easements – reference paragraph 4.05 of Instructions to Bidders for information on Site Inspections ESA Phase 1 pertains to removal of shed on Starland, parcel 151-46-8133, Drawing sheet T-I-C43
Bidding Overview – Highlights Permits/Approvals Obtained Permits/Approvals in Agency Review Columbia Gas – final approval will be secured prior to NTP DTI – by addendum will add DTI Encroachment and Construction Guidelines that are referenced in approval letter within Exhibit C – final approval will be secured prior to NTP JPA Minor Modification – related specification will be provided with first addendum VDH – permit will be combined into one for all three Program Elements DVP NVRPA DEQ/VSMP – VAR 10 & SWPPP JPA – Major Modification Executed Agreements and associated exhibits will be provided by addenda. SWPPP will be available at Pre-Construction Meeting *Contractor to obtain VDOT and Grading Permit and all other required construction permits per Article 6.08.A of the Supplementary Conditions
Bid Form Encourage development of Bid for Welded Steel and DIP Submit only lowest Bid Complete all blanks, including Contingent Contract Items Contingent Contract Items Reduction in Estimated Quantities Phase 1 and Phase 2 Work Or Equal and Substitutions, Article 11, Section 00200, Instructions to Bidders Bid = Sum of Items Submit Bid Form, Bid Bond, Proof of Pre-Qualification Bidding Overview - Highlights
Raw Water Transmission (RWT) Main Overview Slide shows overview Detailed description is provided within the Project Manual and the Contract Drawings Overall Work includes a North and South Alignment Staging Areas provided throughout and shown on Contract Drawings Potomac River QBV PRWPS (By Others) WTP Quarry ‘A’ QARWPS (By Others) RWT ContractInterfacePoint ContractInterfacePoint
Mostly Residential All Trenchless Crossings Occur in This Section DVP Easement / High- Tension Lines DVP Tower Foundation Protection Town of Leesburg Force Main Protection VDOT Coordination at Riverside Pkwy & River Creek Pkwy No Blasting from Route 7 and North to Potomac River North Alignment Potomac River NorthAlignment SouthAlignment QBV PRWPS WTP Quarry ‘A’ QARWPS(Future)
North Alignment Potomac River NorthAlignment SouthAlignment QBV PRWPS WTP Quarry ‘A’ QARWPS(Future) Groundwater at Tuscarora Creek and Sycolin Creek Trenchless Crossings Transitions from 42” to 48” Diameter Pipe Two Tees for Future Quarry Connection W&OD Trail and Luck Stone Berm Construction Limits: 40 to 50 Feet (Most Areas) Multiple Staging Areas
Approximately 32’ x 18’ x 11’ (Deep) inside (See T-1-M1 & M2) Top of Structure Buried Valves 5 Butterfly Valves 1 Check Valve Pre-Blasting of Future Vault Quarry By-Pass Vault Potomac River NorthAlignment SouthAlignment QBV PRWPS WTP Quarry ‘A’ QARWPS(Future)
Extensive Clearing Required Rock Blasting Expected (Submit Blasting Plan Prior to Blasting) Parallel Trench Throughout Provide Pre-Blasting for Future Pipeline Submit Blasting Plan Access Road Re-Grading for Cross-Slope Multiple Double-Barrel Culverts Temporary Access Roads Quarry ‘A’ Tunnel Construction may be ongoing by Luck Stone South Alignment Potomac River NorthAlignment SouthAlignment QBV PRWPS WTP Quarry ‘A’ QARWPS(Future)
South Alignment Potomac River NorthAlignment SouthAlignment QBV PRWPS WTP Quarry ‘A’ QARWPS(Future) Goose Creek Conservation Easement 50-Foot Set-back Requirement (Zoning) Limits of Construction: 50 Feet Wide Throughout Multiple Pipe Staging Areas MSHA and DMM certification for all staff working on Luck Stone Property
Geotechnical Baseline Report – Provides further details on 12 Trenchless Crossings Geotechnical Data Report – not part of Contract Documents but available for review Phase 1 ESA for Starland LLC pole-barn to be demolished (see Supplementary Conditions, Attachment F and Specification Section 02110) Site Conditions and Geotechnical
All Piping (DIP or WSP) Exterior Bonded Coating Required Magnesium and Zinc Ribbon Anodes Thermite Welds Isolation Flanges Test Stations AC Isolation Mats Insulated Casing Spacers Casing End Seals Isolation Flanges Special Requirements for Colonial Gas Mains (see Detail CC-7, Drawing T-1-E11) NACE Certified Cathodic Protection and Corrosion Specialists Required of Contractor (See Specification Section 16640) Cathodic Protection System
See Drawing Sheets T-1-C40 thru T-1-C44 Multiple Access Points shown South end Access shown here (from Drawing T-1-C44) Construction Access Routes
See Specification Section 01500 for 70’x145’ Area Contractor’s Trailer / Parking Area
Partnering Sessions per Section 01112 to promote an open, communicative relationship. Coordination with other Contractors on other Program Elements (RWI, PRWPS, WTP, SCADA) as well as at Luck Stone Other Limitations and Constraints per Specification Section 01140 and as elsewhere indicated Training provided on Owner’s Construction Management Software System (CMSS, e-Builder)--See Specification Section 01305 Functional and Performance Testing per Specification Section 01655 (2 Phases) Other Noteworthy Items
Presentation of the latest renderings Questions?
Your consent to our cookies if you continue to use this website.