Liquid-tight Facility Declaration

Liquid-tight Facility Declaration

Various operational activities entail a risk of soil contamination. The Dutch government may permit such activities, provided facilities and/or control measures are taken to prevent soil contamination. In case you own or are responsible for a liquid-tight facility, such as: then having a Liquid-tight Facility Declaration is mandatory.

The liquid tightness of a facility can be demonstrated by means of a Liquid-tight Facility Declaration. After an independent inspection, this Declaration will be issued if all requirements are met. To this end, the Dutch scheme AS6700 will be used. The abovementioned scheme precedes the Dutch CUR/PBV Recommendation 44 (fourth revision) and the former PBV Declaration. A declaration of this type may be issued if the result of an inspection in accordance with Dutch CUR/PBV Recommendation 44 (fourth revision) "Assessment of Liquid-tightness of Liquid-tight facilities" is such that the facility is deemed to be liquid-tight.

urrent Dutch Legislation and Policies

Since July 1st 2013, the AS6700 scheme was introduced as the successor of the CUR/PBV Recommendation 44 (fourth revision). This transition is relevant regarding the validity of Liquid-tight Facility Declaration. Whilst before, a 3 year period was standard, now the validity as described in your organisations’ environmental permit is decisive. Previously, a component of the liquid-tight inspection consisted of a compliance check of legislation, which is cancelled under the current AS6700 scheme. 


QS Inspection is accredited to carry out inspections of liquid-tight facilities and to issue the Liquid-tight Facility Declaration (previously known as a PBV Declaration).


After independent inspection, a report will be drawn up on the basis of the completed inspection, setting out the inspection findings.
• Where the facility satisfies the requirements of AS6700 Scheme, QSI will append a Liquid-tight Facility Declaration to the report. Moreover, an internal checklist is provided, which can be used to compulsory annual internal control.
• Where following the inspection the facility is deemed not to be liquid-tight, the owner must repair the defects observed within a period of six months, and notify this accordingly. A re-inspection of the repaired defects will be carried out following this report. The repaired defects will be deemed to be liquid tight where they comply with AS6700. Where following the re-inspection the facility meets the requirements of AS6700, QSI will append a Liquid-tight Facility Declaration to the report.

More information

For more information regarding Liquid-tight Facility Declaration or an informal quotation, please contact Mr. Iljo Fluit, through +31 (0)88 166 2000.


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