It depends on whether there is debris and specific circumstances of the construction site.
Membrane should face towards waterproof layer
Lay the geotextile downward while paving. Geotextile mainly plays a protective role. Prevent underground twigs, stones and other sharp objects piercing geomembrane thus losing the effect of waterproof.
Normally, when it comes to one cloth and one membrane, then the cloth is up while the membrane is down, but there are exceptions, anyway, it is hard to say.
