| Violation ID |
Occurred Date |
Violation Type |
(-) Violation Description |
Corrective Action |
Status |
Classification |
Source |
| 1126127 |
02/28/2024 |
Order Conditions |
Violation 1 - During the 28 February 2024 inspection of the Facility, Central Valley Water Board staff observed ponded contact stormwater (i.e. leachate) across almost the entire southern portion of the treated wood storage area, within the Facility’s precipitation and drainage control system. |
1. To correct Violations 1 through 4 above, the Discharger shall immediately begin operation of the Facility’s treatment system at its maximum flow rate allowed by the City of Riverbank until all ponded contact stormwater (i.e. leachate) across can be removed from the surface of the treated wood storage area, the CCA/ACZA diversionary structure, the expanded CCA/ACZA diversionary structure, the onsite temporary storage tanks, and at least 7 feet of freeboard is achieved and maintained in the Surface Impoundment. The Discharger shall also continue submitting weekly compliance updates to Central Valley Water Board staff, and notify Central Valley Water Board staff once they have achieved compline with Discharge Specification B.6, B.8, and B.23 of the WDRs |
Violation |
B |
Inspection |
| 1126128 |
02/28/2024 |
Order Conditions |
Violation 2 - During the 28 February 2024 inspection of the Facility, Central Valley Water Board staff observed ponded contact stormwater (i.e. leachate) across almost the entire CCA/ACZA diversionary structure and the expanded CCA/ACZA diversionary structure. |
1. To correct Violations 1 through 4 above, the Discharger shall immediately begin operation of the Facility’s treatment system at its maximum flow rate allowed by the City of Riverbank until all ponded contact stormwater (i.e. leachate) across can be removed from the surface of the treated wood storage area, the CCA/ACZA diversionary structure, the expanded CCA/ACZA diversionary structure, the onsite temporary storage tanks, and at least 7 feet of freeboard is achieved and maintained in the Surface Impoundment. The Discharger shall also continue submitting weekly compliance updates to Central Valley Water Board staff, and notify Central Valley Water Board staff once they have achieved compline with Discharge Specification B.6, B.8, and B.23 of the WDRs |
Violation |
B |
Inspection |
| 1126129 |
02/28/2024 |
Order Conditions |
Violation 3 - During the 28 February 2024 inspection of the Facility, Central Valley Water Board staff observed only about two feet of freeboard in the Facility’s Surface Impoundment |
1. To correct Violations 1 through 4 above, the Discharger shall immediately begin operation of the Facility’s treatment system at its maximum flow rate allowed by the City of Riverbank until all ponded contact stormwater (i.e. leachate) across can be removed from the surface of the treated wood storage area, the CCA/ACZA diversionary structure, the expanded CCA/ACZA diversionary structure, the onsite temporary storage tanks, and at least 7 feet of freeboard is achieved and maintained in the Surface Impoundment. The Discharger shall also continue submitting weekly compliance updates to Central Valley Water Board staff, and notify Central Valley Water Board staff once they have achieved compline with Discharge Specification B.6, B.8, and B.23 of the WDRs |
Violation |
B |
Inspection |
| 1126130 |
02/28/2024 |
Order Conditions |
Violation 4 - During the 28 February 2024 inspection of the Facility, as well as in multiple Facility status updates submitted to Central Valley Water Board staff since January 2024, the Discharger has stated that no treated stormwater leachate has been discharged to the City of Riverbank’s wastewater treatment system. |
1. To correct Violations 1 through 4 above, the Discharger shall immediately begin operation of the Facility’s treatment system at its maximum flow rate allowed by the City of Riverbank until all ponded contact stormwater (i.e. leachate) across can be removed from the surface of the treated wood storage area, the CCA/ACZA diversionary structure, the expanded CCA/ACZA diversionary structure, the onsite temporary storage tanks, and at least 7 feet of freeboard is achieved and maintained in the Surface Impoundment. The Discharger shall also continue submitting weekly compliance updates to Central Valley Water Board staff, and notify Central Valley Water Board staff once they have achieved compline with Discharge Specification B.6, B.8, and B.23 of the WDRs |
Violation |
B |
Inspection |
| 1126131 |
02/28/2024 |
Order Conditions |
Violation 5 - During the 28 February 2024 inspection of the Facility, Central Valley Water Board staff observed the Sump 1 discharge pipe disconnect from the pipe that is used to transfer leachate from Sump 1 to the Class II surface impoundment. Discharge from the Sump 1 pipe can now flow to an adjacent offsite property. |
2. To correct Violation 5 above, the Discharger shall repair the Sump 1 discharge line so that all storm water leachate collected in Sump 1 is discharged into the Class II surface impoundment. This repair shall occur immediately, and the Discharger shall submit a report by 31 May 2024 documenting the repair. |
Violation |
B |
Inspection |
| 1126132 |
02/28/2024 |
Order Conditions |
Violation 6 - During the 28 February 2024 inspection of the Facility, Central Valley Water Board staff observed the Poly Urea Process Building, which is located in an area that was not paved when the WDRs were issued in 2010. Additionally, Poly Urea processing is not included as a treatment process in the 2010 WDRs. |
3. To correct Violation 6 above, the Discharger shall immediately suspend all Poly Urea wood processing in the southern previously unpaved portion of the Facility, until new WDRs are issued or amended that approve both the treatment process and its location. The report due 31 May 2024 shall document the suspension of Poly Urea wood processing in the southern previously unpaved portion of the Facility. |
Violation |
B |
Inspection |
| 1114710 |
01/18/2023 |
UAUTHDISC |
1. The presence of storm water runoff from the treated wood storage area in contact with soil south of the Sump 5 drainage and containment area is a violations of Prohibition A.4.
Prohibition A.4 states: The discharge of storm water runoff containing wood treating process chemicals to any location other than the process sumps or the lined storm water recycle pond is prohibited.
|
|
Violation |
B |
Inspection |
| 1114711 |
01/18/2023 |
UAUTHDISC |
2. The presence of deteriorated asphalt, in need of patching, sealing, or repaving, within the paved potion of the site is a violation of Discharge Specification B.2.
Discharge Specification B.2 states: On an annual basis, the Discharger shall inspect all paved areas and patch, seal, or re-pave as needed to minimize potential percolation through the pavement. |
|
Violation |
B |
Inspection |
| 1114712 |
01/18/2023 |
UAUTHDISC |
3. Intentionally allowing water to pond at numerous locations within the site’s precipitation and drainage control system is a violation of Discharge Specification B.6:
Discharge Specification B.6 states: Precipitation and drainage control systems shall be designed, constructed, and maintained to accommodate the anticipated volume of precipitation and peak flows from surface runoff under 1,000-year, 24-hour precipitation conditions.
|
|
Violation |
B |
Inspection |
| 1114713 |
01/18/2023 |
UAUTHDISC |
4. Failure to maintained 7 feet of freeboard in the site Class II surface impoundment, given a 1,000-year 24-hour storm event did not occur, is a violation of Discharge Specification B.8
Discharge Specification B.8 states in part: The Class II surface impoundment shall have capacity for precipitation and site runoff from a 100-year wet season of 25.6 inches distributed at least monthly, a 1,000-year 24-hour storm event of 3.54 inches, and shall maintain at least 2 feet of freeboard. At least 7 feet of freeboard shall be maintained at all times except in the event of a storm equal to or exceeding the 1,000-year 24-hour design storm event in which case at least 2 feet of freeboard must be maintained.
|
|
Violation |
B |
Inspection |
| 1114714 |
01/18/2023 |
UAUTHDISC |
5. Failure to operate the site’s treatment system at its maximum flow rate allowed by the city following each recorded rain event is a violation of Discharge Specification B.10
Discharge Specification B.10 states: The Discharger shall operate the treatment system at its maximum flow rate within City permit limitations to regain as much surface impoundment capacity as possible following any precipitation event. |
|
Violation |
B |
Inspection |
| 1114715 |
01/18/2023 |
UAUTHDISC |
6. Intentionally allowing water to pond in the CCA/ACZA diversionary structure is a violation of Discharge Specification B.23:
Discharge Specification B.23 states: The Discharger shall not allow ponding of water in the CCA/ACZA diversionary structure except around the sump area during and within one hour after precipitation events exceeding an intensity of 0.25 inches per hour. |
|
Violation |
B |
Inspection |
| 1111215 |
09/22/2021 |
Deficient Reporting |
2. The Discharger failed to notify Water Board staff of concentration limit exceedances and to complete MRP and 2003 Standard Provision required resampling and reporting. Two concentration limit exceedances were noted in the Annual Report, one for electrical conductivity in MW-21 and one for dissolved arsenic in MW 12A. Additionally, although not discussed in the Annual Report, exceedances of chromium (VI) in MW-7R, and dissolved arsenic in MW-12A were noted in the 2021 Semi-Annual Report. However, these exceedances are based on new intrawell statistics calculated for each individual site well. They are not based on interwell statistics calculated using MW-12 as the background well as outlined in the WDRs and MRP. A separate report outlining the discharger’s proposal to change how water quality protection standards are calculated and applied at the site will be required. |
|
Violation |
B |
Report |
| 1111214 |
07/27/2021 |
Deficient Reporting |
2. The Discharger failed to notify Water Board staff of concentration limit exceedances and to complete MRP and 2003 Standard Provision required resampling and reporting. Two concentration limit exceedances were noted in the Annual Report, one for electrical conductivity in MW-21 and one for dissolved arsenic in MW 12A. Additionally, although not discussed in the Annual Report, exceedances of chromium (VI) in MW-7R, and dissolved arsenic in MW-12A were noted in the 2021 Semi-Annual Report. However, these exceedances are based on new intrawell statistics calculated for each individual site well. They are not based on interwell statistics calculated using MW-12 as the background well as outlined in the WDRs and MRP. A separate report outlining the discharger’s proposal to change how water quality protection standards are calculated and applied at the site will be required. |
|
Violation |
B |
Report |
| 1111213 |
05/07/2021 |
UAUTHDISC |
1. The Discharger failed to Notify Water Board staff of a release of waste or provided written notification as required by Section B.3 of Monitoring and Reporting Program R5 2010-0125 (MRP). This section states in part:
If the Discharger determines that there is … physical evidence of a release, the Discharger shall immediately notify the Central Valley Water Board verbally … shall provide written notification by certified mail within seven days of such determination and implement the resampling procedure in Section C.5 of this MRP and the requirements in Sections X.C and/or X.D of the Standard Provisions
The Annual Report documents a release of a small volume of liquid from the return to transfer line on 7 May 2021, and that this release impacted site soil. An investigation was completed, soil samples were collected, and the results of the confirmation soil samples indicate that residual concentrations do not exceed commercial use Environmental Screening Levels for soil. These results are documented in the 30 July 2021 2021 Semi-Annual Report. However, the WDRs require Water Board staff to be notified immediately of any release that occurs outside the limits of the surface impoundment and/or the site’s paved containment system as outlined above.
|
|
Violation |
B |
Report |
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Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
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