Among the pile of old food packaging, he found a juice packet which expired in April 1989 and a pill packet which expired in 1991.
He was disgusted but amazed at his discoveries and his message was clear.
"Look, this is how long it's been around. If you just put it in the environment it's just going to sit there."
Connop and his partner, Karen Lee, have created a group called F.O.R.C.E - For Our Real Clean Environment, and have been running Love Whangārei Monthly Clean ups since the start of the year.
The next one is on Sunday, from 10am to noon, and will clean up the berm on Hātea Drive and down into the bushes near the heritage sites.
Anyone who wants to join should meet on the grass opposite the Discovery Settlers Hotel.
Other areas the group has targetted include Raumanga near the McDonald's, Pohe Island and the top of Parihaka.
"We try to find places that get missed."
Last month's clean up was attended by 19 people, the most so far, and tackled the mangrove area along Hātea Drive.
Connop said they collected 350kg of rubbish but are expecting to get even more from Sunday's event.
It event follows hot on the heels of a plogging and palking event on Wednesday, and Operation Clean Streets last Saturday.
Connop is happy to see the growing interest in picking up rubbish.
"It's great to see the passion. Getting people out and into it is the best thing."