Sewer Service Charge
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Category A Charge + High Strength Surcharge
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High Strength Surcharge
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(CBOD x XBOD5) + (CTSS x XTSS) + (CP x XP) + (CNH3-N x XNH3-N)
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CBOD
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BOD5 unit cost in dollars per pound
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XBOD5
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Pounds of BOD5 greater than Category A BOD5 wastewater
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CTSS
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TSS unit cost in dollars per pound
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XTSS
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Pounds of TSS greater than Category A TSS wastewater
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CP
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Phosphorus unit cost in dollars per pound
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XP
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Pounds of phosphorus greater than Category A phosphorus wastewater
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CNH3-N
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Ammonia nitrogen unit cost in dollars per pound
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XNH3-N
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Pounds of ammonia nitrogen greater than Category A ammonia nitrogen
wastewater
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