More Mound Design Tips

One question that comes into play when designing mound systems is, how large should the bed be? In Minnesota we have continued to use a soil-sizing factor for the sand bed in the mound of 0.83 square feet per gallon per day, which is equivalent to a loading rate of 1.2 gallons per day per square foot.Some states have adopted a soil-sizing factor of 1 square foot per gpd. This lengthens out the mound and reduces the linear loading rate along the mound from 12 gallons per linear foot to 10 gallons per linear foot. This is consistent with the