The daily volume for an individual dwelling is determined by the number of bedrooms, with the first bedroom 200 gpd and each additional bedroom 150 gpd; minimum 350 gpd. Which statement is correct?

• A. The first bedroom is 200 gpd; each additional bedroom 150 gpd; minimum 350 gpd
• B. The first bedroom is 250 gpd; each additional bedroom 100 gpd; minimum 300 gpd
• C. The first bedroom is 180 gpd; each additional bedroom 200 gpd; minimum 300 gpd
• D. The first bedroom is 220 gpd; each additional bedroom 130 gpd; minimum 320 gpd

Answer: (A)

In residential wastewater design, the daily volume is based on bedrooms: 200 gpd for the first bedroom, plus 150 gpd for each additional bedroom, with a minimum of 350 gpd. You apply the formula 200 + 150 × (number of additional bedrooms) and then compare to the minimum of 350; take the higher value.

For example, one bedroom would be 200 gpd by the formula, but the minimum raises it to 350 gpd. Two bedrooms give 200 + 150 = 350 gpd (meets the minimum). Three bedrooms give 200 + 300 = 500 gpd (above the minimum).

The statement that matches these values is the one listing the first bedroom at 200 gpd, each additional at 150 gpd, with a minimum of 350 gpd. The other options assign different numbers to the first bedroom, the per-bedroom addition, or the minimum, which do not align with these rules.