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NM CID MS-3 Practice Questions - New Mexico CID MS-3 Cesspools, Septic Tanks And Sewers Examination Exam

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A 3-bedroom system needs 750 sq ft of absorption. Trenches are 3 ft wide with 18 inches of aggregate below the invert. After excluding the 6-inch surge band from each sidewall, how many linear feet of trench are required?
Correct Answer:
150 ft

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