CODE REQUIREMENTS
Retention Pond Facts: Compliance Record Keeping
Record-keeping. The permittee (owner) shall be responsible for keeping records documenting that relevant permit conditions are met. This documentation shall include, at a minimum:
The date of each inspection
The date of each inspection
- The name and qualifications of the inspector
- Any maintenance actions taken including date performed
- Determination by the inspector as to whether the system is operating as intended
Dry Retention Inspection & Maintenance Requirements
Three Year Mandatory Compliance Inspection Report
- Inspected by a registered professional at least every third year after the completion to ensure that the system is functioning as designed and permitted.
- Overflow weir and skimmer shall be inspected at least every third year
- Percolation performance shall be evaluated within the pond at least every third year.
- If there is evidence of inadequate percolation, the pond bottom must be re-scarified or deep-raked to restore percolation characteristics.
- If reworking the pond bottom fails to restore adequate percolation, additional retention area restoration shall be performed as follows:The date of each inspectiona. Remove the top layer of the retention area bottom material to a depth of 2 to 3 inches and scarify or deep-rake the excavated bottom.
b. Replace excavated bottom material with suitably permeable material and restore the pond bottom to design grade.
- The Permittee shall submit to the District a completed inspection report on Form No 62-346.900(8) Operation and Maintenance Inspection Certification. The report must be submitted within 30 days of the third anniversary date of conversion to the Operation and Maintenance phase, and at 3 year However, a Report shall be submitted to the District within 30 days of any system failure or non-compliance with permit conditions intervals
Periodic Inspection and Maintenance recommend (semi-annually)
- Inspected periodically for accumulation of debris and trash
- Inspected periodically for silt accumulation
- Grassed areas of the retention system shall be fertilized only as needed to maintain vegetation
- Grass Areas shall be mowed regularly in order to be kept at a manageable length as required for system functionality, maintenance, and safety.