Compliance scores are calculated on a weighted average based on the amount of milk produced at each farm. Scores are based on an on site inspection, raw milk sample results and water sample results. A passing score is 90 points. If a BTU fails to score 90 or above, the raw milk is diverted away from Grade A use until a passing survey is completed. Enforcement scores are a measure of the degree to which enforcement provisions of the Grade A Pasteurized Milk Ordinance (PMO) are being applied by the regulatory agency (., inspection frequency, sample frequency for raw milk and water, inspections posted, records being.