Bear Trap Dunes Water Treatment Facility Report conducted

Bear Trap Dunes Water Treatment Facility Report conducted by

KPC Water Team S Team members – Tim Sweany – Trevor Irvine – Thomas Burton – Tyler Wingate S Experience – 10 years combined experience in Water/Wastewater field

Mission KPC Environmental Group is an environmental company which performs water treatment consulting in Delaware. • Purpose: Analyze Bear Trap Water Treatment plant – Determine compliance with regulations/ permits – Issue findings – Make Recommendations for possible improvements

Bear Trap Customers S Area Served – Bethany Bay/Ocean View System – One of Five water treatment plants

Bear Trap Customers S Population Served – 814 accounts in Bear Trap development – Seasonal occupancy (5, 043 accounts system wide) • 3, 992 Full time residents in system • 21, 058 Transient residents from May-September

Aerial View of Facility

Facility Overview S Construction Dates – Wells - April 2007 – Plant - May 2008 – Open - May 2008 S Wells – – – Well #1 - 675 gpm Well #2 - 425 gpm Water tower- 350, 000 gal Average production- 500, 000 gpd Maximum production- 775, 000 gpd at 540 gpm Maximum design production- 1, 728, 000 gpd

Treatment S Pre-filtration Chemical Addition – Caustic, Chlorine, & Potassium Permanganate S Greensand Filtration – 3 Filtration units with 540 gpm total flow – 180 gpm per filter S Post-Filtration Chemical Addition – Caustic, Chlorine (Disinfectant) & Zinc Orthophosphate S Filter Backwash – Stored in decant tank – Re-treated at 54 gpm

Sampling, Testing and Data Recording S S Potassium Permanganate Analyzer Chlorine Analyzer p. H Analyzer Chart Recorders – Chlorine – p. H – Tower level – Decant tank level

Operator Lab and Testing S Distribution sample – Once per week S Treatment plant sampling – Pre-filtration – Post-filtration (each filter) – Effluent • • Chlorine Iron p. H Zinc

Research and Regulations S Operating Requirements – Operator visit three times per week S Distribution System Monitoring Requirements – Monthly Bacterial 30 (May-Sept. ) 4 (Oct. -April) – Lead and Copper 40 every six months – WQP 2 6 every six months S Facility Monitoring requirements – RIOC 1 every 9 years – RRAD 1 every 3 years – Fluoride and Nitrate 1 every year S State of Delaware Drinking Water Branch

Research and Regulations cont. S Monitoring Summary – System failed lead and copper (2009 -2010) – Bear Trap Dunes area had no failures S Water Characteristics Influent Effluent Iron 2. 0 - 2. 5 mg/L 0. 00 - 0. 11 mg/L p. H 6. 25 7. 5 - 8. 0 Temperature 15. 3 - 17. 2 °C 13. 9 - 18. 8 °C Chlorine Residual None 1. 0 - 1. 5 mg/L

Audit S KPC conducted a facility audit/sanitary survey on 04/28/2012 – Toured the plant – Asked operator questions – Viewed records S Reviewed available permits S Researched information about system on state website

Audit Findings S Shower/Eyewash Station – Not clear of obstructions – Difficult to access in emergency S Caustic Soda Tank – Not located in chemical room – Creates PPE issue in Filter area S Confined Space – Decant Tank entry points not labeled as Confined Space S Housekeeping

Audit Findings S Operations and Maintenance Manuals – Manuals provided by Tidewater are lacking key elements – They do not include Greensand units S Standard Operating Procedures – Not yet created S Plant Production – Rated for 1200 gpm – Produces 540 gpm S Decant Tank Size – Inadequate – Must be pumped every six days

Audit Findings S Connection Discrepancy – State-6, 804 connections – Tidewater-5, 043 accounts S Facility Walls – Made of plywood S Weekly manual m-scope readings – Additional time – Possibility of contamination S No PPE onsite

Recommendations S Shower/eyewash Station – Tank configuration re-ordering to allow access – Change location of eyewash station S Caustic Soda Tank – Put in chemical room – Put exclusion zone around tank S Confined Space – Add sign to all entrances S Housekeeping – Allocate time for organization

Recommendations S Standard Operating Procedures – Create a book of SOP’s available for review at the facility S Operations and Maintenance Manuals – The manuals should be revised to include information on greensand units S Plant Production – Missing out on production ability that you paid to receive – Possibility of future growth necessitates a solution S Decant Tank Size – Additional tank – Expand existing tank

Recommendations S Weekly manual m-scope readings – Permanent level reading device with chartable readings S Connection Discrepancy – Accounts vs. Connections S Facility Walls – Add a dehumidifier – Replace walls with fiberglass reinforced plastic walls that were described in design specifications S No PPE onsite – Personal protective equipment at the facility

Conclusion S Facility is in compliance with regulations S Main issues to be addressed – Safety • Shower/eyewash station • Caustic soda tank location • Confined Space signs and SOP for sludge removal – O&M Manuals • Need revision, and additions

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