Versions of Virginia Code 62.1-44.19:20 v2: (Contingent effective date -- See Editor\'s note) Nutrient credit certification on LawServer 2023 Virginia Code 62.1-44.19:20 v2: (Contingent effective date — See Editor’s note) Nutrient credit certification 2022 Virginia Code 62.1-44.19:20 v2: (Contingent effective date — See Editor’s note) Nutrient credit certification