It appears to me like the areas in question are where the slab was stickered when first cut. I guess I'd suggest asking the folks at the place where I purchased the kiln dried slab, what can be done.
Thank you so much for the reply. I bought the slab raw and before it was kiln dried, and then sent it to be kiln dried after I checked the moisture content. I don’t think they put a sticker on it during the drying process, but I will check in with the company. Thanks again!