"Arborist said" .........hmmm. Kinda like when a vet tells a dog owner "the lawn chemicals" gave it cancer. Then you ask the vet "which products caused it".... they NEVER have an answer. Too funny. I'd bet my bottom dollar that the "so called arborist" has no clue whatsoever wtf he is doing. Imprellis damage would have shown up by now. 2 species of pines in your area are prone to micro-nutrient deficiencies (chlorosis). Eastern white pine and Jack pine. High pH soils often cause these 2 species of trees in the pine family to show poor growth, dwarfed needles, pale/yellow needles, as well as winter burn (scorched tips of needles). DA -- I'd tell that so-called "arborist" to 'show proof'. I doubt you will here from him again. (ambulance chaser).