TMDL Compliance: What Does it Take? How Much Does it Cost? A Case Study of City of Torrance, CA

摘要

1.Overall TMDL Compliance:rn– The City already complies with the 2014 TMDL limitsrn– Removal of Phosphorus governs compliance for 2018 TMDL limitsrn2.Total Phosphorus Removal Requirementrn– Existing Load : 653 kg/yrrn– 2018 TMDL limit : 301 kg/yrrn– Removal Needed : 352 kg/yearrn3.Phosphorus TMDL Compliance Plan:rn– Street sweeping : 39 kg/yrrn– Catch Basin inserts : 7 kg/yrrn– Airport BMP : 313 kg/yrrn– Walnut Sump BMP : 13 kg/yrrn– Baseball Field BMP : 2 kg/yrrn4.Estimated Program Costrn– Non- Structural BMPs : $ 7.5 millionrn– Structural BMPs : $ 11.4 million