Stormwater pollution prevention plan (SWPPP) need to be reviewed and updated on a regular basis

Your Storm water pollution prevention plan (SWPPP)  is a document that will need to be reviewed and updated on a regular basis. Whenever you find the need to change a procedure that is described in your SWPPP or to modify a control measure described therein, you must update the SWPPP to reflect those changes as quickly as practicable.

Below are some examples of events that, if they result in a change in control measures or procedures, will require prompt revision of the Storm water pollution prevention plan to reflect the new facility conditions.

• A change in the composition of the storm water pollution prevention team or new responsible official.

• An unauthorized release or discharge (e.g., spill, leak, or discharge of non-storm water not authorized by this or another NPDES permit) occurs at your facility.

• A discharge violates a numeric effluent limit.

• You become aware, or EPA determines, that your control measures are not stringent enough for the discharge to meet applicable water quality standards;

• An inspection or evaluation of your facility by an EPA official, or local, State, or Tribal entity, determines that modifications to the control measures are necessary to meet the non-numeric effluent limits in this permit.

• Construction or a change in design, operation, or maintenance at your facility significantly changes the nature of pollutants discharged in storm water from your facility, or significantly increases the quantity of pollutants discharged.

• The average of four quarterly sampling results exceeds an applicable benchmark. If less than four benchmark samples have been taken, but the results are such that an exceedance of the 4 quarter average is mathematically certain (i.e., if the sum of quarterly sample results to date is more than 4 times the benchmark level) this is considered a benchmark exceedance, triggering a review of control measures and possible SWPPP modification.

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Revisions to the Storm water pollution prevention plan (SWPPP) to document corrective actions requires a new signed and dated certification statement by the responsible official. All other changes must be signed and dated by the person preparing the change. In the interim between the annual inspection and completed SWPPP revision, keep a copy of the original Storm water pollution prevention plan (SWPPP)  with your handwritten notes for SWPPP modifications at the facility. Should you be inspected before the revised SWPPP is complete, the copy with your notes can be used to demonstrate the changes that will be in the revised document. Visit our http://www.questepa.comfor more information relating to Storm water pollution prevention plan (SWPPP).