Bear Trap Dunes Water Treatment Facility Report conducted by

KPC Water Team   Team members – Tim Sweany – Trevor Irvine – Thomas Burton – Tyler Wingate   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   Area Served – Bethany Bay/Ocean View System – One of Five water treatment plants

Bear Trap Customers   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   Construction Dates – Wells - April 2007 – Plant - May 2008 – Open - May 2008   Wells – Well # gpm – Well # 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   Pre-filtration Chemical Addition – Caustic, Chlorine, & Potassium Permanganate   Greensand Filtration – 3 Filtration units with 540 gpm total flow – 180 gpm per filter   Post-Filtration Chemical Addition – Caustic, Chlorine (Disinfectant) & Zinc Orthophosphate   Filter Backwash – Stored in decant tank – Re-treated at 54 gpm

Sampling, Testing and Data Recording   Potassium Permanganate Analyzer   Chlorine Analyzer   pH Analyzer   Chart Recorders – Chlorine – pH – Tower level – Decant tank level

Operator Lab and Testing   Distribution sample – Once per week   Treatment plant sampling – Pre-filtration – Post-filtration (each filter) – Effluent Chlorine Iron pH Zinc

Research and Regulations   Operating Requirements – Operator visit three times per week   Distribution System Monitoring Requirements – Monthly Bacterial 30 (May-Sept.) 4 (Oct.-April) – Lead and Copper 40 every six months – WQP2 6 every six months   Facility Monitoring requirements – RIOC 1 every 9 years – RRAD 1 every 3 years – Fluoride and Nitrate 1 every year   State of Delaware Drinking Water Branch State of Delaware Drinking Water Branch

Research and Regulations cont.   Monitoring Summary – System failed lead and copper ( ) – Bear Trap Dunes area had no failures   Water Characteristics InfluentEffluent Iron mg/L mg/L pH Temperature °C °C Chlorine ResidualNone mg/L

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

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

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

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

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

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

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

Conclusion  Facility is in compliance with regulations   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

T HE E ND