Contractor Creates dangerous condition

The following incident was just reported by one of our members.

I wanted to make you aware of an incident that occurred yesterday at
Linden Airport while my co-owner and I were flying.

We arrived at the airport in the afternoon and taxied to the approach end of runway 9 at approximately 5:53pm. At the overrun area we discovered a sealant truck filling the cracks on the runway in the overrun area. There was no NOTAM
posted for this work.

We took off without issue and arrived back in the vicinity at around 6:44pm. 
As we continued our approach we noticed that there was something moving
down the centerline of the runway. We made numerous radio calls in an
attempt to determine what was on the runway. A helicopter pilot
radioed that they thought it was the sealant truck on the runway.

The truck stopped on the side of the runway, and we aborted our takeoff
and went around. We landed without incident on the second attempt, as
the truck had vacated the runway.

As mentioned, there was no NOTAM published for this work despite a truck carrying a fuel of some sort (used to light the torch for melting the sealant) being in the vicinity of - and on - the runway.

The "sealing" of the ramp area has resulted in an incredible amount of debris being scattered around the airport. It has been weeks since the sealing took place, and there are still chunks of concrete all around the airport that will do
immense damage to an airplane if it were to come in contact with a
propeller.

The continued lack of safety procedures at Linden Airport is completely
unacceptable. The lack of NOTAMs is not an isolated incident. The sealant truck should also have been using a radio and acknowledged our calls. The truck parking on the side of the runway leads me to believe they were waiting for us to land -- which I could see being potentially disastrous if e.g. we got a flat during landing and veered off the runway into the truck.