Each such notice of violation shall contain an order of the commissioner directing the respondent to correct the condition constituting the violation and to file with the department electronically or in such other manner as the department may authorize by rule a certification that the condition has been corrected. Unless otherwise provided by rule, such order shall require that violations classified as major or lesser be corrected within 30 days from the date of the order, that violations classified as immediately hazardous be corrected forthwith. Such order shall also require that certification of the correction of the violation shall be filed with the department in a manner and form and within such period of time as shall be established by the department. In any proceeding before the environmental control board, no civil penalty shall be imposed for a lesser violation if the respondent complies with the commissioner's order to correct and to certify correction of the violation within the applicable time period. However, such violation may serve as a predicate for purposes of assessing aggravating factors attributable to multiple offenses.