When you exit the dark tunnels of Rochfale Tunnel, you are introduced to stretches of hot sand teeming with wild Pokémon. Tandor Sheets makes up a large sandy beach of a bay located in the northern reaches of West Tandor.
On the very southern tip of Route 7, just northeast to the entrance to Rochfale Hole sits a small house. The woman living inside the house will heal your Pokémon if you talk to her; it's exactly what a weary traveler needs after the trek from Rochfale Town.
This location is unavailable prior to 1.02
On the east before Bealbeach is a cave. You'll find the same Pokémon as on the beach, but in the grass instead, so you'll be able to use the PokéRadar. There is also a PP Up.
Note : Once you leave for Nuclear Plant Epsilon, you can not return until completing the side quest, and the trip is one-time only. Pokémon healing is available, but there is no access to a PC and only limited supplies may be purchased. Choose your party carefully and stock up your backpack accordingly.
Surfing northeast from the rest house will lead to a secluded beach, inaccessible by land. Here, a ninja will EV train your Pokémon in the Speed stat. It costs 500 for each playing of the minigame. In the minigame, you need to use precise timing to hit a bar so your Pokémon will hit a sandbag. After ten hits, your Pokémon will gain Speed EVs equal to 40% of their 'score' in the minigame.