As Needed Technical Engineering and Environmental Services for East County Regional Potable Reuse Project. Pre Proposal Meeting August 27, 2015

Transcription

1 As Needed Technical Engineering and Environmental Services for East County Regional Potable Reuse Project Pre Proposal Meeting August 27, 2015

2 Presentation Outline Introductions Padre Dam MWD Description East County Regional Potable Reuse Program Demonstration Project Update Ground Water Basin Surface Water Augmentation at Lake Jennings Implementation Approach RFP Requirements

3 Padre Dam MWD Potable Water Wastewater Recycled Water Santee Lakes 100% imported ~12,000 AFY 34% reduction due to conservation 4 5 MGD generated 2 MGD Ray Stoyer WRF Remaining to PLWWTP Owns ~ 3% Metro treatment capacity ~ 900 AFY irrigation ~ 1,120 AFY to Santee Lakes Only permitted inland live stream discharger 2 nd largest RV camp ground in SD County (including 10 cabins) ~750,000 visitors/year Year round special events

4 Padre Dam MWD

5 East County Regional Potable Reuse Program 4 Participating Agencies Program Goals Produce a minimum of 15% of the East County s potable supply Price of water to be less than $2,000 per acre foot Limit financial obligations to the rate payers to the same level as treatment at the Metropolitan Wastewater Treatment System

6 Program Service Area Padre Dam MWD Helix Water District Study Area Boundary

7 East County Regional Potable Reuse Feasibility Study Alternatives Alternative 1 Alternative 2 Alternative 3 Alternative 4 Alternative 5 WRF Expansion to 6 MGD WRF Expansion to 21 MGD WRF Expansion to 21 MGD WRF Expansion to 6 MGD Business as usual Title 22 Expansion Title 22 Expansion Title 22 Expansion Title 22 Expansion GRRP/ SWA 2,500 AFY GRRP 2,500 AFY SWA 13,000 AFY SWA 15,500 AFY

8 Alternative 3 Project Phasing Phase 1 Phase 2 Phase 3 IPS Expansion WRF Expansion 6 MGD Mission Gorge PS WRF Expansion 15 MGD Mission Gorge PS Expansion WRF Expansion Up to 21 MGD Phase 1 Capital Cost $132M Potable Water Produced (AFY) 2,500 Title 22 Expansion SWA 11,200 AFY SWA 15,500 AFY 2 &3 Total $360M $492M 13,000 15,500 GRRP/ SWA 2,500 AFY Sludge/Brine Pipelines Solids Digestion

9 Project Infrastructure Elements Cogeneration Facility Sludge /Brine Pipeline Sycamore Landfill Ray Stoyer WRF Thickened Primary & Secondary Solids Organic Waste Ray Stoyer WRF Digester Digester AWP Pipeline Gas IC Engine Santee Basin GRRP Electricity Lake Jennings Influent Pump Station R. M. Levy WTP Sycamore Landfill

10 Project Infrastructure Elements Cogeneration Facility Ray Stoyer WRF Sludge/ Brine Pipeline AWP Pipeline Lake Jennings Sycamore Landfill Santee Basin GRRP Influent Pump Station Wastewater Pipeline R. M. Levy WTP East Mission Gorge PS

11 Revenue Sources & Funding Prop. 84 $6M Point Loma/AWP Fund $9M Existing Sewer Fund $10M Prop. 1 $15M USBOR Title XVI Up to 25% SRF 1% Through December 2015 Energy Generation & Organic Waste Diversion $2M/year

12 Demonstration Project Update Gain regulatory approval using minimum aquifer storage Operator experience in advanced water treatment Demonstrate treatment performance at critical control points Public outreach Construction Completed March 2015 Testing Started April 2015 Final Testing February 2016 Final Report March 2016

13 Padre Dam s Advanced Water Purification Train Free Chlorine Membrane Filtration Reverse Osmosis Ultraviolet Light/Advanced Oxidation WRF Effluent Total Removal Virus Giardia Crypto Meeting all pathogen removal requirements before environmental buffer

14 Results and Perspectives Routine Testing Challenge Testing Regulatory Outlook All processes meeting goals High operator engagement Excellent UV performance On going chlorine testing Meeting test plan goals Optimistic for permitting

15 Santee Groundwater Basin Ray Stoyer WRF Original area of study for GRRP by BOR Current area of study for GRRP by RBF/Stevens

16 Wells & Borings/URS Study Sonic Core Boring Monitoring Well Geotechnical Boring Monitoring Well (2 in) Current Area of Study

17 Aquifer Flow Rates Simulated Particle Traces High K Scenario for 1.7 MGD Summer, 2.8 MGD Winter Minimum Travel Time of 142 Days (~ 4.7 Months) Meets minimum 4 month travel time requirement

18 Santee Basin Next Steps Independent Advisory Panel Recommendations US Bureau of Reclamation Scope Aquifer testing plan Water level monitoring plan Collect additional information on local groundwater pumping Collect additional water quality data As Needed Engineering Consultant Scope Update model to account for collected data

19 Surface Water Augmentation at Lake Jennings Conceptual entry point for purified water Inlet/outlet tower R.M. Levy Water Treatment Plant Recycle inlet Subsurface air diffuser Reservoir Operating Volumes: Normal Max = 8,935 AF Average = 7,700 AF Normal Min = 5,997 AF

20 Program Organizational Structure Legal Padre Dam MWD Program Management Team Program Partners (Helix, El Cajon, County) As Needed Engineering Consultant Team Design/Construction

21 Preliminary Phase 1 Implementation Approach Off ramp #1 Nov 2015 Off ramp #2 Approve MND for WRF plant Dec 2016 expansion Approve East County Feasibility Study Approve As needed Engineering Contract Authorization of CEQA for reuse elements Approval of Financial Plan Authorization of WRF expansion DB contract Adoption of CEQA for the reuse elements Off ramp #3 Jan 2018 Authorization of construction contracts for AWP, Pipeline, GRRP, and Solids East County Potable Reuse Feasibility Study MND for WRF Expansion AWP Demo Testing Santee Basin Modeling Lake Jennings Modeling Santee WQ Studies CEQA for Reuse Elements Financial Planning Preliminary Design SWA Regulation Adoption Design for AWP, Pipeline, GRRP, and Solids Design/Build for WRF Expansion Tracer Study Construction of AWP, Pipeline, GRRP, Solids Phase 1 Startup

22 As Needed Consultant Contract Minimum Tasks Engineering Studies Lake Jennings Studies GW Studies Treatment Process Studies Predesign Documents 10 30% Design Specs and Cost Environmental Assistance Geotechnical and Surveying Regulatory Coordination Financial Management Support Preparation of CEQA Documentation Geotechnical and Surveying for Reuse Elements Permitting Assistance Funding Applications Cost Allocations Rate Impacts Design Build Owner s Rep RFQ Preparations Bridging Documents Engineering Support Services during Construction Management and Admin Support RFIs Change Orders Stratup Services Institutional Support Stakeholder Outreach Governance Structure

23 Key Proposal Requirements Project Approach Project Organization & Key Project Personnel Scope of Work and Fee Proposal QA/QC Program Meet program objectives Conceptual program approach focusing on Phase I Additional concepts and ideas for successful implementation Detailed first year tasks and describe how it would ensure successful implementation Implementation schedule Project team relevant experience, resumes, and references Replacement of key team members will not be permitted w/o District approval Company experience First year key task orders and scope Fee proposal for the key task orders Fee proposal in a separate sealed envelope Overall QA/QC protocol QA/QC of subconsultants efforts

24 Evaluation Criteria Scored on 100 point basis by the Selection Panel Project Approach 30 points Company/Project Experience 10 points Project Team 30 points Availability of Staff 15 points Demonstrate Best Value/Highest Benefit to the Program 15 points Interview with minimum 3 highest scoring firms Selection Panel includes representatives within/outside of the District

25 Upcoming Schedule Board Approval November 18, 2015 Short listed Announcement October 3, 2015 Pre Proposal Meeting Today Proposals Due September 21, 2015 Notifications Interviews November 2, 2015 Week of October 19 Award Contract December 1, 2015

26 RFP Inquiries Must be in writing is acceptable Send to Arne Sandvik at All inquiries to be received by September 7, 2015 Check website frequently for District responses

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