combustible storage at pump stations – the forgotten danger – understanding storage tank...
DESCRIPTION
This presentation was prepared for the New England Water Works Association Spring Conference held at the DCU Center in Worcester, MA on March 30 & 31, 2011.TRANSCRIPT
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Combustible Storage at Pump Stations – The Forgotten Danger – Understanding Storage Tank Management Requirements for Remote Sites
March 31, 2011
David P. Horowitz, P.E., [email protected]
NEWWA - 2011 Spring Joint Regional Conference & Exhibition
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Energy Policy Act of 2005
■ Underground Storage Tank Compliance Act of 2005
■ Reduce releases to environment
■ Focus on preventing releases
■ Expanded Leaking Underground Storage Tank (LUST) Trust Fund
■ Inspections, operator training, delivery prohibition, secondary containment and financial responsibility
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The Big Picture
■ 611,500 USTs
■ 223,000 sites
■ 2/3 of active USTs are compliant
■ UST releases declining
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The Big Picture
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Region 1 Picture
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MADEP Registry
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MADEP Registry
■ Database Query “Pump Station” yields 57 hits (3 pages)
■ Database Query “Treatment Plant” yields 15 hits (1 page)
■ Database Query “Water Treatment” yields 21 hits (2 pages)
■ Database Query “Water Pollution” yields 9 hits (1 page)
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Massachusetts
■ Over 11,000 Active USTs in MA
■ 527 CMR 9.0■ MA DEP Regulations■ 3rd Party Inspections
– Required by August 2009– Every 3 Years– Operational paperwork– Physical system inspection
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Massachusetts
■ Underground Storage Tanks
– All single wall steel tanks shall be removed by August 7, 2017
– This does not apply to solely consumptive use tanks and tanks that were relined prior to August 8, 2007
– Relining is now prohibited
– Delivery prohibition (“Red Tag”)
– Established 3rd Party Inspection program
» Does not apply to solely consumptive use tanks
» All tanks inspected by August 8, 2010
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Massachusetts
■ Consumptive Use
– “Fuel oil used exclusively for area heating and/or the heating of domestic water on premises where stored.”
■ Non-Consumptive Use
– Fleet fueling
» Gasoline
» Diesel
– Emergency generators
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Massachusetts
■ 3rd Party Inspection Program
– Private, state, municipal and federal facilities
– Inspected every 3 years (no later than August 2010)
– DEP on July 1, 2009
– FP289
– Provides 3rd Party Inspector Certifications
» Qualifications
» Training provided by DFS
» http://www.mass.gov/dep/toxics/ust/tpilist.pdf
» 185 “Eligible” Inspectors
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Massachusetts
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Connecticut
■ 3,000 sites with 12,000 USTs in CT
■ 22a-449(d)-1 & 22a-449(d) 101-113
■ DEP Inspections– Required by August 2009– Every 3 Years– Unannounced– Operational paperwork– Physical system inspection
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Inspection Overview
■ Facility Records
■ Spill Protection
■ Overfill Prevention
■ Tank Leak Detection
■ Piping Leak Detection
■ Corrosion Protection
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Typical Deficiencies – 150+ USTs Inspected (No Retail)
Deficiency % Identified
Maintenance 91%
Financial Assurance 84%
Sump Monitoring 66%
Registration 61%
Overfill Prevention 38%
Cathodic Protection 18%
Double Wall Piping Issues 12%
Shear Valve 11%
‘Extra’ Vents 6%
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Records Review
■ Pre-Inspection– Federal
» Financial Assurance– State
» DEP RegistryLocal
» Fire Department Permits» Registration
– Facility» Inventory Monitoring» Release Prevention
■ Inspection– Verify record documents match system
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Financial Assurance
■ Use state financial assurance funds
■ Obtain insurance coverage■ Obtain a guarantee■ Obtain a surety bond■ Obtain a letter of credit■ Pass a financial test■ Set up a trust fund
■ Local, State & Feds = OK!
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Spill Protection
■ Spill Bucket– Return product to tank– 3 gallon capacity
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Overfill Prevention
Automatic Shut Off
Ball Float Vent
High Level Alarm
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Tank Leak Detection
■ Interstitial Monitoring
■ Automatic Tank Gauging– Continuous In-Tank Leak Detection System (CLSD)
■ Manual Tank Gauging– ≤2,000 gallons
■ Statistical Inventory Reconciliation (SIR)– Vendor or approved in-house data analysis – 2 year tightness testing interval
■ Soil Vapor Monitoring– Site assessment
■ Groundwater Monitoring– Site assessment
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Piping Leak Detection
■ Interstitial Monitoring
■ Automatic Line Leak Detectors (ALLD)
■ European Suction– Check valve immediately
beneath pump/dispenser
■ American Suction– Check valve at UST
■ Tightness Testing– 3 year interval
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Corrosion Protection
■ Galvanic Protection– STI-P3– 3 Year NACE Inspection
» -0.850 Volt, soil to tank potential
■ Impressed Current– 60 day Operator Inspection– Annual NACE Inspection
■ Non-Metal Construction– Clad Steel Tanks– FRP
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Inspection Shortfalls
■ Shear Valves
■ Vapor Recovery
■ Regulatory Confusion
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Water in the Sump?
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Operator Training - FUTURE
■ Required by August 8, 2012– Three classes of operator
■ Owner/Operator Inspections– Monthly– Semi-annual– Annual
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Operator Training - FUTURE
■ Class A– Familiar with applicable statutes &
regulations as the specifically apply– Pass and exam– 2 Year refresher training
■ Class B– Familiar with applicable statutes &
regulations– Pass and exam– 2 Year refresher training
■ Class C– Familiar with response requirements– Trained by Class A
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Thank You!