Ah yes, this is located in the industrial shithole part of Bukit Batok. There's a park connector linking Boon Lay Way (near Chevrons) to this place, halfway up north you will need to go upslope and follow the linear footpath next to the busy PIE flyover, then get to the other side of the flyover.
A great shortcut from Jurong East to Bukit Batok. And Upper Bukit Timah, if you keep going east along Bukit Batok Ave 6.