Article 63.

1.

During the execution of the soil remediation works, the principal of the soil remediation project, the limited soil remediation project or the soil remediation works can initiate the execution of a small change or addition to the soil remediation project declared to be in accordance or limited soil remediation project declared to be in accordance with the standard procedure stated in Article 62.

The soil remediation expert, under whose leadership the soil remediation works are carried out, reports the small change or addition to the OVAM, which takes note of this. This takes place in accordance with the standard procedure stated in Article 62.

The Flemish Government determines in which cases and under which conditions a small change or addition can be carried out.

2.

During the execution of the soil remediation works, the principal of the soil remediation project, the limited soil remediation project or the soil remediation works can also submit a proposal to the OVAM for a large change or addition to the soil remediation project declared to be in accordance or limited soil remediation project declared to be in accordance. A proposal for a large change or addition is approved or, if necessary, rejected by the OVAM. The large change or addition is carried out in accordance with the conditions, as stated in the approval decision, and in accordance with the standard procedure stated in Article 62.

The Flemish Government determines in which cases and under which conditions a proposal for a large change or addition can be drawn up and submitted to the OVAM. Also, the Flemish Government can determine further regulations concerning the procedure for a large change or addition.

3.

If during the carrying out of the soil remediation work within the context of a limited soil remediation project declared in conformity it appears that the soil contamination cannot be completed within the period of one hundred and eighty days mentioned in article 56, the party ordering the soil remediation work can request a once-only extension of the conformity certificate for the limited soil remediation project for a period of one hundred and eighty days. The reasoned request for an extension must, under penalty of inadmissibility, be submitted to the OVAM within thirty days before the end of the period of one hundred and eighty days. The OVAM makes a decision on the extension within thirty days of receipt of the request.