LTEA: quality data supports Basin Plan LTEA identifies MS4 elevated levels of various nutrients Water Quality sources of nutrients Pueblo Yes, during dry conditions Objectives No, strategies for Nutrients However, LTEA identifies San Diego Phosphorus dry Annual Regional Monitoring: provide a other Highest 303(d) listing for groundwater strategies that Mesa/ 908.22 weather Yes Yes Yes supports elevated levels of various nitrogen to Yes, WARM Priority Conditions No Total WARM intrusion has also address MS4 Chollas Total Nitrogen - wet nutrients during dry conditions in phosphorus ratio will address this Nitrogen) been found to be nutrient issues Creek and dry weather receiving water with goal condition. source of nutrients 303(d) listings: supported by data objectives for in MS4 systems in the lines of evidence phosphorus Annual Regional Monitoring: LTEA identifies Investigative LTEA identifies MS4 Pueblo supports elevated levels of trash MS4 sources No, strategies for Order plan water sources of trash in – San during dry weather of trash in wet other Highest automatically a quality wet weather, but Mesa/ 908.22 Trash Yes Yes Yes Yes 303(d) listings: supported by data Yes, REC-2 weather, but Priority Conditions No PWQC; objectives are other non-MS4 Chollas in the lines of evidence other non-MS4 will address this Impairment of narrative sources may Creek Identified as an issue from Public sources may condition. REC-2 contribute Input contribute Pueblo San Diego Mesa/ 908.22 Turbidity Yes No Yes Yes No No Chollas Creek Unknown if predominant TMDL identifies Phase I MS4 as source, but Caltrans, US Navy, Pueblo Draft TMDL MLOE not supporting: Monitoring Phase II MS4s, and LTEA identifies No, strategies for – Basin plan water San Diego automatically a done for draft TMDL supports listing; enrollees of strategies that Highest Yes, quality Mesa/ 908.22 PAHs PWQC; Yes Yes Yes However, source identification studies Industrial and Yes, MAR address MS4 Priority Conditions No wet weather objectives are Chollas Impairment of are needed to link to MS4 and construction general organics will address this narrative (at Mouth) MAR potential sources permits also issues condition. identified as responsible parties Atmospheric deposition noted as uncontrollable source
Pueblo San Diego Mesa/ 908.22 Chollas Creek Nutrients Total Nitrogen) Yes, Phosphorus dry weather Total Nitrogen - wet and dry weather 303(d) listing for WARM Yes Yes Yes LTEA: quality data supports elevated levels of various nutrients during dry conditions Annual Regional Monitoring: supports elevated levels of various nutrients during dry conditions in receiving water 303(d) listings: supported by data in the lines of evidence Basin Plan Water Quality Objectives provide a nitrogen to phosphorus ratio with goal objectives for phosphorus LTEA identifies MS4 sources of nutrients However, groundwater intrusion has also been found to be source of nutrients in MS4 systems Yes, WARM LTEA identifies strategies that address MS4 nutrient issues No, strategies for other Highest Priority Conditions will address this condition. No Pueblo San Mesa/ 908.22 Chollas Creek Trash Yes Investigative Order – automatically a PWQC; Impairment of REC-2 Yes Yes Yes Annual Regional Monitoring: supports elevated levels of trash during dry weather 303(d) listings: supported by data in the lines of evidence Identified as an issue from Public Input plan water quality objectives are narrative LTEA identifies MS4 sources of trash in wet weather, but other non-MS4 sources may contribute Yes, REC-2 LTEA identifies MS4 sources of trash in wet weather, but other non-MS4 sources may contribute No, strategies for other Highest Priority Conditions will address this condition. No Pueblo San Diego Mesa/ 908.22 Chollas Creek Turbidity Yes No Yes Yes No No Pueblo San Diego Mesa/ 908.22 Chollas (at Mouth) PAHs Yes, wet weather Draft TMDL – automatically a PWQC; Impairment of MAR Yes Yes Yes MLOE not supporting: Monitoring done for draft TMDL supports listing; However, source identification studies are needed to link to MS4 and potential sources Basin plan water quality objectives are narrative Unknown if predominant TMDL identifies Phase I MS4 as source, but Caltrans, US Navy, Phase II MS4s, and enrollees of Industrial and construction general permits also identified as responsible parties Atmospheric deposition noted as uncontrollable source Yes, MAR LTEA identifies strategies that address MS4 organics issues No, strategies for Highest Priority Conditions will address this condition. No