Turn on the Shipping Modules for:

Store Pickup storepickup

Free Shipping Options freeoptions
Configure for Total >= 10.00 and leave all other settings BLANK not 0.00 but BLANK as in nothing in the input boxes ...

Now, the Store Pickup storepickup will always show and the Free Shipping Options freeoptions will only show when there is an order of $10.00 or more ...

Viola! You are done!

NOTE: make sure that you turn off the Free Shipping on the Modules ... Order Totals ... Shipping ot_shipping ... if you have that turned on ...