| Violation ID |
Occurred Date |
Violation Type |
(-) Violation Description |
Corrective Action |
Status |
Classification |
Source |
| 1123271 |
01/02/2024 |
LREP |
Annual SMR ( PROGRPT ) (Advanced Water Treatment Fac) report for 2024 (2523303) was due on 01-JAN-24 |
|
Violation |
B |
Report |
| 1119144 |
05/31/2023 |
DMON |
The monitoring of p,p-DDT and p,p-DDD are monthly requirements. Both analytes are analyzed by EPA method 608.3 and were missed in May. The analyst referred to the TIWRP NPDES permit and misunderstood the requirements. |
The analyzing lab has clarified and reiterated the requirements outlined in the permit and sample chain-of-custodies to all staff. |
Violation |
U |
eSMR |
| 1118429 |
04/07/2023 |
CAT2 |
Chlorine, Total Residual Daily Maximum limit is 0.1 mg/L and reported value was 0.17 mg/L at EFF-001. |
In the short-term, a new standard operating procedure will be created that instructs plant staff to operate the sodium bisulfite system in manual mode when work is taking place on the dichlorination system. The long-term corrective action that the plant is evaluating is to modify the programming so the sodium bisulfite system has a minimum dose based on the number of reverse osmosis trains are online, which will serve as a backup to the existing primary control method which is based on reverse osmosis concentrate ORP. |
Violation |
U |
eSMR |
| 1112240 |
01/02/2023 |
LREP |
Annual SMR ( PROGRPT ) (Advanced Water Treatment Fac) report for 2023 (2523285) was due on 01-JAN-23 |
|
Violation |
B |
Report |
| 1111248 |
09/28/2022 |
DMON |
The total flow on September 28 is Not Representative and will not be reported in this Self-Monitoring Report. It is a daily required parameter. There were communication issues with the control system and the database after a cutover to a new faceplate and the data could not be recovered. |
N/A |
Violation |
B |
eSMR |
| 1109954 |
08/29/2022 |
CTOX |
Chronic Toxicity Maximum Daily (MDEL) limit is 0 Pass/Fail (Pass = 0, Fail = 1) and reported value was 1 Pass/Fail (Pass = 0, Fail = 1) at EFF-001. |
N/A |
Violation |
B |
eSMR |
| 1102124 |
03/02/2022 |
LREP |
Annual SMR ( PRETRPT ) report for 2021 (2362621) was due on 01-MAR-22 |
|
Violation |
B |
Report |
| 1102969 |
01/04/2022 |
DMON |
On January 4 an equipment communications issue for part of the day led to inaccurate data for influent flow. It was resolved that day, but there no instantaneous peak flow can be reported for the influent that day. |
NA |
Violation |
U |
eSMR |
| 1099060 |
01/02/2022 |
LREP |
Annual SMR ( PROGRPT ) (Advanced Water Treatment Fac) report for 2022 (2523267) was due on 01-JAN-22 |
|
Violation |
B |
Report |
| 1100567 |
11/01/2021 |
DMON |
On 11/1/2021 the effluent sample was improperly preserved for oil and grease analysis. The pH was greater than two, and therefor invalid. This was discovered on 11/9/2021, and as this is a weekly monitoring requirement, no resample for that week was possible. |
Staff were reminded to follow proper sample preservation procedure. |
Violation |
U |
eSMR |
| 1096401 |
08/24/2021 |
OEV |
pH Instantaneous Minimum limit is 6.5 SU and reported value was 3.3 SU at EFF-001. |
To prevent reoccurrence, TIWRP has changed Lockout Blackout procedures to isolate the chemical discharge line during maintenance. Additionally, chemical pumps will be uncoupled from their motors for rotation testing to prevent unintentional release of chemicals. |
Violation |
B |
eSMR |
| 1089858 |
02/21/2021 |
DMON |
The Los Angeles Harbor testing of HW-20 and HW-62 for chronic toxicity, and the concurrent effluent chronic toxicity testing, occurred late in February, with samples collected on the 22nd for the Harbor sites and the 21st for effluent. The reference toxicant test for this batch of samples failed, rendering the toxicity results invalid, and a re-sampling could not occur before the end of the month. This is a deficient monitoring violation as effluent chronic toxicity testing is required monthly. |
The March chronic toxicity testing was able to be scheduled earlier, on March 9th. |
Violation |
B |
eSMR |
| 1077959 |
05/28/2020 |
DMON |
The City of Los Angeles was unable to monitor water quality parameters during the April - June quarter in the Santa Monica Bay and Los Angeles Harbor. Equipment necessary for profiling and sampling was unavailable due to Coronavirus closures. See attached letter to Regional Board dated June 30 titled ¿Unable to perform quarterly offshore and harbor water quality monitoring (April ¿ June)¿. Conductivity-temperature-depth (CTD) profiler was out of service and under repair at Sea-Bird Facility in Washington State, which was shut down during the pandemic. The CTD profiler is used for both discrete and surface sampling. Without the use of a CTD for tracking and delineating the plume, surface sample collection involving ammonia and microbiological samples would not be meaningful. |
EMD is seeking relief of this compliance requirement for the affected quarter; the CTD has since been repaired, returned to EMD, and is in service
On July 6, EMD conducted an LAH Quarterly survey (without the CTD) for ammonia and microbiology only at the 12 required stations. This is a good-faith effort for missing the second quarter survey due to the concern and inquiry of RWQCB. All 12 stations E. Coli results are <10 MPN/100mL, so they did not exceed single sample limitations.
|
Violation |
U |
eSMR |
| 1070666 |
11/03/2019 |
DMON |
At the end of November, Wet Chemistry section received a large influx of storm-water samples from HTP, LAG, DCT, and WPD. Because these are ¿rush¿ samples, the analyst analyzed these first. In doing so, the sample dates of the samples collected early November were overlooked and their holding times were exceeded.
November 3 effluent oil and grease sample was analyzed out of holding time due to human error. This sample was accidentally put away in Wet Chemistry''s back up refrigerator and was noticed by someone else close to the expiration date of the sample. We analyzed the sample immediately once the error was realized. Unfortunately, the error was caught late and the result is being reported as ¿Analyst Error (AE)¿. All of the rest of 3 weekly results are ¿Not Detected (ND)¿ or ¿Detected but Not Quantified (DNQ)¿; therefore, the monthly median of this month is ND and in compliance of permit limit 10 mg/L. The loading associated with this result became ¿Not Calculable (NC)¿. |
We will improve sample scheduling to prevent future occurrences. |
Violation |
B |
eSMR |
| 1072660 |
11/03/2019 |
DMON |
At the end of November, Wet Chemistry section received a large influx of storm-water samples from HTPWRP, LAGWRP, DCTWRP, and WPD. Because these are ¿rush¿ samples, the analysts analyzed these first. In doing so, the sample dates of the samples collected in early November were overlooked and their holding times were exceeded. November 3rd effluent oil and grease sample was analyzed out of holding time due to this human error. This sample was accidentally stored in Wet Chemistry's back-up refrigerator and was noticed by another analyst near the expiration date of the sample. The sample was immediately analyzed once the error was realized. Unfortunately, the error was caught late and the result is being reported as ¿Analyst Error (AE)¿. All of the rest of 3 weekly results are ¿Not Detected (ND)¿ or ¿Detected but Not Quantified (DNQ)¿; therefore, the monthly median of this month is ND and in compliance of permit limit 10 mg/L. The loading associated with this result became ¿Not Calculable (NC)¿. |
Staff have been informed to pay close attention to sample collection dates on sample bottles and to always analyze the oldest samples first. Staff have also been given instructions to notify the supervisor of any samples that may be close to holding time expiration. In doing so, the supervisor will shift staff schedules to avoid having any samples analyzed past holding time.
|
Violation |
U |
eSMR |
| 1072664 |
11/03/2019 |
DMON |
At the end of November, Wet Chemistry section received a large influx of storm-water samples from HTPWRP, LAGWRP, DCTWRP, and WPD. Because these are ¿rush¿ samples, the analysts analyzed these first. In doing so, the sample dates of the samples collected in early November were overlooked and their holding times were exceeded. November 3rd effluent oil and grease sample was analyzed out of holding time due to this human error. This sample was accidentally stored in Wet Chemistry's back-up refrigerator and was noticed by another analyst near the expiration date of the sample. The sample was immediately analyzed once the error was realized. Unfortunately, the error was caught late and the result is being reported as ¿Analyst Error (AE)¿. All of the rest of 3 weekly results are ¿Not Detected (ND)¿ or ¿Detected but Not Quantified (DNQ)¿; therefore, the monthly median of this month is ND and in compliance of permit limit 10 mg/L. The loading associated with this result became ¿Not Calculable (NC)¿. |
Staff have been informed to pay close attention to sample collection dates on sample bottles and to always analyze the oldest samples first. Staff have also been given instructions to notify the supervisor of any samples that may be close to holding time expiration. In doing so, the supervisor will shift staff schedules to avoid having any samples analyzed past holding time. |
Violation |
U |
eSMR |
| 1062072 |
05/21/2019 |
CTOX |
Chronic Toxicity Monthly Median limit is 0 Pass/Fail (Pass = 0, Fail = 1) and reported value was 1 Pass/Fail (Pass = 0, Fail = 1) at EFF-001. |
No corrective actions is needed at this time. |
Violation |
B |
eSMR |
| 1072662 |
05/21/2019 |
CTOX |
Chronic Toxicity Monthly Median limit is 0 Pass/Fail (Pass = 0, Fail = 1) and reported value was 1 Pass/Fail (Pass = 0, Fail = 1) at EFF-001. |
Per the permit, accelerated testing for chronic toxicity in the effluent began on June 5 using the topsmelt, Atherinops affinis. Two accelerated tests resulted in "Pass.¿ The third accelerated test produced invalid results six times. . With the third and fourth accelerated tests resulting in a "Pass,¿ accelerated monitoring for TIWRP ended and routine monthly monitoring resumed November 2019. |
Violation |
U |
eSMR |
| 1072663 |
05/21/2019 |
CTOX |
Chronic Toxicity Monthly Median limit is 0 Pass/Fail (Pass = 0, Fail = 1) and reported value was 1 Pass/Fail (Pass = 0, Fail = 1) at EFF-001. |
Per the permit, accelerated testing for chronic toxicity in the effluent began on June 5 using the topsmelt, Atherinops affinis. Two accelerated tests resulted in "Pass.¡± The third accelerated test produced invalid results six times. Four times the invalid results were due to the reference toxicant (RT) tests failing to meet the LC50 test acceptability criterion (TAC) for copper (LC50 ¡Ü 205 ¦Ìg/L) and two times the effluent test was considered invalid because the LC50 for 7-day survival and/or the IC25 for biomass were more than two standard deviations above their cumulative means, exceeding the upper limits of the control charts. All the invalid tests appear to be the result of inadequate seawater from the Cabrillo Marine Aquarium. Consequently, seawater from the Scripps Institute was used in the toxicity tests performed in October.
A sixth re-test of the third suite of accelerated tests was initiated October 9, 2019, using a composite sample collected October 7, 2019. Renewal samples were collected October 10 and 14, 2019. The TIWRP effluent test and the concurrently run RT test met all TAC. The TIWRP effluent test, analyzed using the Test of Significant Toxicity (TST), resulted in a "Pass" with a 3.63% effect at the IWC. The EC25 result was greater than 20%.
The fourth and final suite of accelerated TIWRP chronic toxicity tests was initiated October 22, 2019, using a composite sample collected October 21, 2019. Renewal samples were collected October 24 and 27, 2019. The TIWRP effluent test and the concurrently run RT test met all TAC. The TIWRP effluent test, analyzed using the TST, resulted in a "Pass" with an 11.33% effect at the IWC. The EC25 result was greater than 20%.
With the third and fourth accelerated tests resulting in a "Pass,¡± accelerated monitoring for TIWRP ended and routine monthly monitoring resumed November 2019. |
Violation |
U |
eSMR |
|
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
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