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Ocean Outfall Legislation & Compliance Meeting Agenda - City of Hollywood, October 2008

The City of Hollywood’s Department of Public Utilities convened a large user meeting on October 2, 2008, to discuss recent ocean outfall legislation and compliance measures. Key agenda items included a regulatory review, baseline nutrient establishment, and nutrient reduction options. The meeting emphasized the elimination of ocean outfalls except in emergencies by December 31, 2025, alongside a requirement for a functioning reuse system for at least 60% of outfall flow. Additional topics included compliance timelines, monitoring data, and future wastewater treatment opportunities.

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Ocean Outfall Legislation & Compliance Meeting Agenda - City of Hollywood, October 2008

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  1. Ocean Outfall Legislation Compliance City of Hollywood Department of Public Utilities LARGE USER MEETING October 2, 2008

  2. Agenda • Regulatory Review • Baseline Establishment • Nutrient Reduction Options • Reuse Alternatives

  3. Regulatory Review • HB 7139 / SB 1302 effective July 1, 2008 (Ch 2008-232) • Outfall Nutrient Reduction by December 31, 2018 • “Elimination” of Ocean Outfall (except in emergency) by December 31, 2025 • > 60% of Outfall Flow to Reuse by December 31, 2025

  4. General Requirements • SFWMD may require reuse of water made available by the elimination of ocean outfalls [FS 373.250 (2) (d) Reuse of Reclaimed Water] • Construction of new outfalls and expansion of new outfalls is prohibited [FS 403.086 (9) (a)] • Existing outfalls capped at capacity as of July 1, 2008 [FS 403.086 (9) (a)] • Outfall discharge prohibited after Dec. 31, 2025 except for functioning reuse system back-up [FS 403.086 (9) (d)]

  5. Baseline Nutrients and Flows • FDEP to establish average TN and TP baseline loadings using monitoring data from 2003 to 2007 expressed as average annual daily loadings [FS 403.086 (9) (b)] • FDEP to establish Facility Actual Flows using monitoring data from 2003 to 2007 of flows throughthe outfall expressed as average annual daily flow[FS 403.086 (9) (c)]

  6. Nutrient Reduction [FS 403.086 (9)(b)] • Basic Nutrient Criterion – discharge to meet AWTas defined under FS 403.086 (4) namely 5/5/3/1 and HLD by Dec. 31, 2018 • Alternatives • Equivalent reduction in TN &TP baseline loadings • Equivalent cumulative reduction in TN & TP from2009 - 2025 to AWT levels between 2019 - 2025 • Fully operational 100% reuse by Dec. 31, 2018

  7. Reuse Requirements [FS 403.086 (9)(c)] • Basic Reuse Criterion - Facilities discharging to ocean on 7/1/2008 must have functioning reuse system by 12/31/2025 • A functioning reuse system means an environmentally, economically, and technically feasible system for ≥ 60% facility actual flow • Alternatives • Diversion of flow to other facilities counts toward the 60% if 100% is reused • Diversion of 60% of combined outfall facilities for single utility

  8. Planning Requirements [FS 403.086 (9)(e)] • Progress report and action item schedule by Dec. 31, 2009 • Updated progress report and action item schedule every 5 yrs (2014, 2019, 2024) • Detailed implementation plan to meet all requirements to be submitted by July 1, 2013 • Updated plan by July 1, 2016 • All outfall permits after July 1, 2008 will include an order with a compliance schedule

  9. Baseline Establishment • 2003 -2007 SRWWTP Outfall Data • Average Flow – 40.1 mgd • Average TN Load – 5,293 lbs/day • Concentration = 15.8 mg/L • Average TP Load – 4,247 lbs/day • Concentration = 1.3 mg/L

  10. Nutrient Reduction • Advanced Wastewater Treatment and Management Options • Meet AWT Standards (5/5/3/1) • TN and TP baseline load reduction equivalent to AWT standards (~ 7 mgd) • Cumulative 2009–2025 TN and TP reduction equivalent to cumulative reduction through AWT between 2019-2025 • 100% reuse by Dec. 31, 2018

  11. AWT Compliance Approaches • Nutrient Reduction Alternative 1 – Implement AWT • Maximize use of existing injection wells (≥30 mgd to wells) • AWT facilities for balance of flow (~30 mgd by 2025) • Estimated cost >$300M

  12. AWT Compliance Approaches • Nutrient Reduction Alternative 2 – Cumulative reduction • Maximize use of existing injection wells (≥30 mgd to wells) • Construct additional injection well (IW-3) no later than 2016 • HLD facilities required • Estimated cost ≈$45M

  13. AWT Compliance Approaches • Nutrient Reduction Alternative 3 – 100% Reuse • Construct necessary facilities by 2018 • Maximum Reuse Alternative • Salinity Barrier • Canal Recharge • Groundwater Recharge • Dual distribution • Estimated Capital Cost (60 mgd) >$1.5B

  14. AWT Compliance Approaches • Cumulative Reduction Recommended Strategy (IW-3) • Lowest probable cost option • Utilizes existing infrastructure • Defers significant treatment plant modifications • HLD facilities provide possible synergy w/ reuse strategy

  15. Cumulative Reduction Strategies

  16. Reuse Compliance Approaches • Reuse Requirement – 60% of Baseline Outfall Flow by 2025 ~ 25 mgd • Reuse Alternatives • Canal Discharge • Biscayne Aquifer Discharge • Floridan Aquifer Discharge • Dual Distribution System • Large User Pull-Out

  17. Canal Discharge • Indirect Potable Reuse Option • Considered an extension to Biscayne Aquifer (F.A.C. 62-610.555 4 (b)) • FDEP - Principal Treatment & Disinfection • HLD, TN ≤ 10 mg/L unless WQBELs est. • BCEPD – TN ≤ 1.5 mg/L, TP ≤ 0.02 mg/L • Membrane / LOT Treatment

  18. Canal Discharge Regulatory Requirements * WQBEL Limited

  19. Canal Discharge – Issues • Disposal Location? • Eventual Disposal to Tide • Direct Impact on Coral Reefs • Problem Exacerbated

  20. Biscayne Aquifer Discharge • Indirect Potable Reuse Option • Class G-I Ground Water (F.A.C. 62-610.560) • FDEP - Full Treatment & Disinfection • NPDW, NSDW Standards, HLD, TN ≤ 10 mg/L • BCEPD – PO4-P ≤ 0.01 mg/L, COD ≤ 10 mg/L, Chlorides ≤ 250 mg/L • Membrane / LOT Treatment

  21. Biscayne Aquifer Discharge Regulatory Requirements

  22. Canal / Biscayne Aquifer Discharge Treatment Alternatives • New Treatment Train to Meet LOT • MBR → RO → UV (AOP) • Fine Screens, Primary Clarifiers • BNR → UF → RO → UV (AOP) • Utilize Existing Tankage? • Secondary Effluent Side stream Process • BAF → UF → RO → UV (AOP) • BAF - Biological Aerated Filters • Biscayne Aquifer - UF → RO → UV (AOP)

  23. Reuse Alternatives 1 and 2 –Canal / Biscayne Aquifer Discharge

  24. Floridan Aquifer Discharge • Indirect Potable Reuse Option • Class G-II Ground Water (F.A.C. 62-610.560) • TDS > 3,000 mg/L below 1,100 feet • FDEP – Primary Treatment & Disinfection + NPDW Standards • BCEPD – No differentiation between Class G-I and G-II GW • Assume COD, PO4 and Cl- limits can be waived – need to confirm

  25. Floridan Aquifer Discharge Regulatory Requirements

  26. Floridan Aquifer Discharge Treatment Alternatives • New Treatment Train • Diffused Air BNR → Filters → HLD • MBR → HLD • Fine Screens, Primary Clarifiers • Utilize Existing Process? • Optimize SRT • Pure Oxygen - Partial nitrification • Convert to Diffused Air – Full nitrification • SCE → Denite Filters → HLD • Side stream Process • SCE → BAF → Filters → HLD

  27. Reuse Alternative 3 –Floridan Aquifer Discharge

  28. Expand Dual Distribution • High Chloride Influent • 21.6 mgd ≈ 3,000 mg/l Cl- • Low Chloride Influent • 41.5 mgd ≈ 150 mg/l Cl- • Plus D/CC flow @ 6 mgd; NPW use at 4 mgd • Separate Influent Streams and Treatment • High Chloride to Deep Wells • Low Chloride to Off-Site Reuse • Peak Flow/Emergency Disposal to Outfall

  29. Reuse Alternative 4 –Expand Dual Distribution System

  30. Reuse Alternative 4Dual Distribution of 25 mgd

  31. Large User Pull-Out • Hallandale Beach – 6.5 mgd AADF (2005) • 10.9 mgd AADF in 2025 • Pembroke Pines – 7.5 mgd AADF (2005) • 8.4 mgd AADF in 2025 • Combined 2025 Flow – 19.3 mgd • 100% Reuse Flow – Credit towards SRWWTP 60% Reuse Requirement • 5.7 MGD required @ SRWWTP

  32. Reuse Alternative 5 –Large User Pullout

  33. Existing Condition (2007)

  34. Year 2025 Condition

  35. Estimated Reuse Alternative Costs Alternative 1 – Canal Recharge $680-830M Alternative 2 – Biscayne Recharge $720-880M Alternative 3 – Floridan Recharge $400-510M Alternative 4 – Dual Distribution $700M Alternative 5 – Large User Pull-Out $?

  36. Compliance Schedule

  37. Recharge Pilot Test Issues • Define Regulatory Standards • COD, chlorides, phosphate, toxicity, microconstituents, etc. • Determine Limits of Technology • Determine Design Criteria • Pretreatment, Treatment, Post-treatment, mixing zones, etc. • Injection modeling, flow rates, pressures, well spacing, fate, etc. • Determine degree of recharge

  38. Reuse/Recharge Pilot Test Budget* Regulatory Discussions/Pre-design $1 - 1.5M Design/Permitting $3.5 - 4.5M Pilot Test Construction & Operation $10.5 - 14M Total Project Cost $15 - 20M *Assumes 3-yr test period

  39. Discussion

  40. Davie and Cooper City Effluent Disposal Options

  41. Background • In 1985 agreement between Davie, Cooper City, and Hollywood reserved a total of 10.5-mgd outfall capacity. • Davie: 7.0 - mgd • Cooper City: 3.5 - mgd • In 1992 effluent disposal agreement was amended to include the construction of a 4-mgd reuse system.

  42. Highlights of 1992 Amendment • This was an action that prevented a building moratorium in City’s served by the regional system. • Allowed the expansion of the WWTP by reducing effluent discharge to the outfall via reuse. • Ordered Davie and Cooper City to provide wastewater effluent to the regional system despite their objections. • Provided Davie and Cooper City a total effluent disposal capacity of 14.5 mgd (4-mgd of reuse).

  43. Davie Cooper City Effluent Disposal Options Option 1 Replace outfall capacity with new IW and HLD in the Regional System. • Proportionally share the costs with the Large Users • Continue sending 4-mgd of effluent to the plant. • Wet weather discharge of reuse flows to IW system when necessary.

  44. Davie Cooper City Effluent Disposal Options Option 2 Either Davie or Cooper City opt out of the outfall and build their own capacity for effluent disposal. • Either Davie or Cooper City proportionally shares costs to build IW and HLD with Large Users. • Continue sending 4-mgd of effluent to the plant. • Wet weather discharge of reuse flows to IW system when necessary. • Would require 100 percent reuse of diverted flow

  45. Davie Cooper City Effluent Disposal Options Option 3 Both Davie and Cooper City opt out of outfall and build their own capacity for effluent disposal. • Continue sending 4-mgd of effluent to the plant. • Wet weather discharge of reuse flows to IW system when necessary. • Would require 100 percent reuse of diverted flow

  46. Recommended Action Plan – Initial Phase • Construct additional injection well capacity with HLD to meet nutrient reduction requirements. • Initiate Biscayne / Floridan aquifer recharge pilot project to assess treatability and regulatory issues with stakeholders. • Discuss effluent disposal options with Davie and Cooper City to determine their desired course of action. • Upon completion of pilot study, evaluate approach to meet 60-percent reuse requirement (2025).

  47. Preliminary Analysis of Rate Requirements for Initial Phase (2018) Option B • Construction of two (2) IWs with HLD • Biscayne /Floridan Aquifer recharge pilot study • Preliminary rate estimate(1) : $2.70 – $2.90 per thousand gallon Option A • Construction of one (1) IW with HLD • Biscayne / Floridan Aquifer recharge pilot study • Preliminary rate estimate(1): $2.50 – $2.70 per thousand gallon Notes: 1. Preliminary rate based on capital requirement and does not include O&M costs.

  48. Where do we go from here… • Large Users to review recommended options. • Negotiations with Davie and Cooper City relative to options they wish to exercise. • Schedule a special Large User meeting to gather feedback and decide on recommended options. • Submit proposed plan of action to FDEP. • Draft amendment to Large User Agreement and Davie/Cooper City Effluent Disposal Agreement.

  49. Questions

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