staying in compliance inventory control bill greer gtec
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Staying in Compliance
Inventory Control
Bill Greer
GTEC
Inventory Control and Tightness Testing
Regulatory Requirements:Inventory control can be used as a temporary method (10 years after new installation or upgrading an UST with Cathodic Protection) but it must be combined with tightness testing.
Inventory Control and Tightness Testing
Regulatory Requirements:
Tightness testing when combined with Inventory Control as a Release Detection Method should be performed once every 5 years for 10 years. A monthly monitoring method (S.I.R., ATG, etc.) is required after 10 years.
Inventory ControlRegulatory Requirements:
Must record:
Volume measurements for inputs and withdrawals.
Volume amount still remaining in the tank each operating day.
Inventory ControlRegulatory Requirements:
Must be capable of:
Measuring the product level over the full range of the tank’s height.
To the nearest 1/8 inch.
Inventory ControlRegulatory Requirements:
Inputs:
Inventory must be measured before and after delivery.
Reconciled with delivery receipts.
Inventory ControlRegulatory Requirements:
Deliveries must be made through a drop tube that extends to within one foot of tank bottom.
Inventory ControlRegulatory Requirements:
Product dispensing must be metered and recorded within local standards.
Inventory Control
Regulatory Requirements:
Must check for water once a month to the nearest 1/8 inch.
Inventory Control
Inventory Control Considerations:
Use an accurate tank chart and a good quality tank stick.
Inventory Control
Inventory Control Considerations:
Use the correct forms.
Daily Inventory WorksheetMonthly Inventory Record
(or use your ownComputer Generated Forms)
Forms can be found in:
Web Site to Download Inventory Publication
• http://www.epa.gov/oust/pubs/doing.htm
Inventory Control
NOTE:
If your reconciliation is not within the allowable limits for 2 consecutive months, you must notify your regulatory agency ASAP that your tank may be leaking (suspected release).
Inventory Control
If the overage or shortage is greater than or equal to 1.0 percent of the tank's flow-through volume plus 130 gallons of product, the UST may be leaking.
Inventory Control
Example:
Monthly thruput = 10,000 gallons:
1% + 130 gallons =
100 + 130 = 230 gallons
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