TARP HYDRODYNAMIC DEVICE TESTING PERFORMANCE REVIEW

摘要

Multiple stormwater Hydrodynamic devices were evaluated for TSS removal capability in accordance to the New Jersey Department of Environmental Protection (NJDEP) TARP laboratory protocol. The TARP lab test protocol has offered the most comprehensive stormwater testing comparison to date. Procedures, results and conclusions from this full scale evaluation are presented in this paper. Considerable effort is being expended to assess the effectiveness of urban Best Management Practices (BMP) for stormwater quality enhancement. The effectiveness of structural BMP's is typically evaluated based on a limited amount of test data, which has lead some state organizations established programs requiring mandatory testing for these devices. One such program is the Technology Acceptance and Reciprocity Partnership (TARP), which is a group of state environment agencies including New Jersey, California, Illinois, Massachusetts, New York, Pennsylvania and Virginia. The group has formally agreed to a common strategy of evaluating, approving or permitting environmental technologies. To facilitate the implementation, they have created a third party technical group called the New Jersey Corporation for Advanced Technology (NJCAT) to evaluate manufacturer performance claims. The program has two levels, full scale laboratory testing which is an interim approval given with the understanding that a full scale field test (Tier 2) will be conducted in the State of New Jersey. This paper was prepared for evaluation of total suspended solids (TSS) removal efficiency for a Stormceptor Model STC 900 in accordance with the NJDEP particle size distribution prescribed in their revised laboratory protocol titled "Total Suspended Solids Laboratory Testing Procedure". Full scale laboratory testing was performed on a Stormceptor Model STC 900. The first objective of the testing was to determine the percent TSS removal at various operating rates and the overall annual TSS removal once the NJDEP annual runoff volume weight factors were applied. The second objective was to determine total long-term performance by evaluating if scouring occurs at the highest operating rate when the lower chamber is filled to 50% and 100% of the sediment capacity. Procedures, results and conclusions from a variety of products tested and certified via the TARP interim certification process are discussed in this paper.