Requirements: level 10+. The event lasts 15 days. 
To access the event, click on the icon on the right side of the screen:

Inspections tab

This is the tab where all your tasks are.
The main goal of the event is to complete as many tasks as possible within the given time and receive points for them. Points are Recycling Badges. The more Recycling Badges you collect, the more rewards you will be able to claim.
The tab is separated into 2 sections, one is the Daily inspections and the other is the Whole event inspections.
Daily inspections:
Daily inspections refresh every day at the same time.
For completing each daily inspection, the player receives 7 Recycling Badges. In total, a player can score 28 Recycling Badges for daily inspections per day.

Whole event inspections:
Unlike daily inspections, the player receives all  inspections of the week at once. These  inspections are not random, i.e. each player receives the set of  inspections that corresponds to their level;  inspections are the same for all players.
During the Eco Patrol, regular quests will also appear in the game, for example, Calendar quest, a Treasure Hunter, or an Expedition.
In the Eco Patrol, you will have tasks related to these quests added (note that this is not displayed in advance in the Quests tab, tasks appear automatically after the release of quests).
In tasks of this kind, only the progress that you receive after you have received the task will be taken into account.

Important: In the quests of the Trader's tent, those quests that you already have at the time the Eco Patrol appears in the game will not be counted. All new quests issued will count towards the Exo Patrol quests.

Rewards tab

This is the tab where you will be able to claim your rewards once you have accumulated enough Recycling Badges for them. The rewards you can claim are situated in the bottom row of the Rewards tab.
In the Rewards tab, you will find many different types of rewards. You will need to click the Claim button to get a reward.
You can buy the Gold Recycling Badge to get more event rewards for completing tasks.
If you buy the Gold Recycle Badge,  you will be able to claim rewards from the top row as well. However, you can claim the rewards in the top row only after accumulating enough Recycling Badges to get them, just like in the bottom row.
For instance, purchasing the Gold Recycling Badge will give you access to boosts and speedups:
Gift for club members: For level 30+ players

When a club member buys the Golden Recycling Badge, several club members have the opportunity to pick up a gift:
In the bonus panel you will see:
1. Information about who bought the pass
2. Number of available bonuses
3. Bonus filling
4. Number of items in the bonus
5. Timer for collecting the bonus
NOTE: You can pick up a bonus from one message only once (for example, player 2 can pick up 2 SB 19 times if all other club members buy the Golden Recycling Badge.

Once you take the bonus, there will be a ✅ by it and the number will decrease from 5 players can claim to 4 and so on until they are all gone.  After all 5 bonuses have been claimed, the message will disappear from the window.
Buy the Gold Recycling Badge and earn all the rewards to gain access to the lottery and its endless rewards.
Purchasing additional Recycling Badges 
Recycling Badges can be purchased for superbucks to help you reach the next reward.
10 Recycling Badges cost 1 superbuck.
Double points
Durinh the final 5 days of the Eco Patrol, all tasks will bring you twice as many points as they usually do. 

Special Bonuses tab

The Gold Recycling Badge gives you the opportunity to receive special bonuses, which are presented in the top row of rewards for the Eco Patrol, as well as in a separate Special Bonuses Tab.

Please note that special bonuses become active only after purchasing the Gold Recycling Badge (and accumulating enough recycling badges to unlock the bonus in the Rewards tab) they are only active during the Eco Patrol's running time:

After receiving bonuses to accelerate or increase production, they start working only for new orders; those productions that are active at the time of receiving the bonus are not subject to its effect.

You can see the active bonuses when you click on the buildings.
Remember: you have the option to sell items in your storage that you will need for this event.