Puppy daily exercise

Question
HI,
Dollar $$ (Labrador)(age 3 months)
How much exercise need for per day?
I Walk him and play with him and run with him in park 1 hour 30 min at morning 8:30 to 10:00 and then even at 5:30 to 7:30
So this exercise is OK for his health? or i need to reduce some ?
Some people said its too much no need this much exercise plz help me out

AND WANT TO KNOW THIS IS A LAB? OR GOLDEN RETRIEVER?
I attach 1 link ,see images in my album at fb
((DOG NAME DOLLAR $$ only))other dogs is not my
https://www.facebook.com/media/set/?set=a.271707132884529.73709.100001357326789&type=1

Answer
It's not just the amount of exercise, its the type.  Puppies should exercise on soft surfaces and do things that replicate playing outside a den.  They should not be running at your side for long on leash on hard surfaces.  These are safe times for pups to exercise, by age of the puppy.  You can exercise them a few times a day at these levels and be OK.  

3 months  = 15 minutes
4 months  = 20 minutes
5 months  = 25 minutes
6 months  = 30 minutes
7 months  = 35 minutes
8 months  = 40 minutes
9 months  = 45 minutes
10 months  = 50 minutes
11 months  = 55 minutes
1 yr  = 1 hr

The dog in your photo looks like a yellow Labrador Retriever (field type) or Labrador mix.