| #Q001 | monitoring | operational | mandatory | Dewatering Discharge Turbidity Sampling | wastewater | Collect at least one turbidity sample per day, from each discharge point, on any day there is a dewatering discharge. Use turbidity sampling procedures specified in CGP Part 3.3.1. | Applies to sites discharging dewatering water to a sediment-impaired water or to a water designated as a Tier 2, Tier 2.5, or Tier 3. | high |
| #Q002 | monitoring | operational | mandatory | Turbidity Benchmark Comparison | wastewater | Compare the weekly average turbidity monitoring results to the 50 NTU benchmark (or alternate benchmark if approved by EPA). | Applies to sites discharging dewatering water to a sediment-impaired water or to a water designated as a Tier 2, Tier 2.5, or Tier 3. | high |
| #Q003 | corrective_action | operational | mandatory | Turbidity Benchmark Corrective Action | wastewater | If the weekly average exceeds the benchmark, take follow-up corrective action in accordance with CGP Part 5.2.2. | If the weekly average exceeds the benchmark. | high |
| #Q004 | reporting | reporting | mandatory | Quarterly Turbidity Reporting | wastewater | Report all weekly average turbidity monitoring results on a quarterly basis via NeT-CGP no later than 30 days following the end of each monitoring quarter. | | high |
| #Q005 | administrative | reporting | mandatory | Alternate Benchmark Request Submission Requirements | wastewater | To do so, the operator must submit to EPA: 1. the current turbidity water quality standard that applies to the receiving water and a citation to the applicable State or Tribal water quality standard document, and 2. if the applicable turbidity water quality standard is determined by the natural or background turbidity levels in the waterbody, include available, representative data on natural turbidity levels in the receiving water and the source of the data. | If operators request approval of an alternate benchmark threshold consistent with CGP Part 3.3.2.b. | high |
| #Q006 | reporting | reporting | mandatory | Coordinating Monitoring Arrangements in SWPPP | wastewater | Such coordinating arrangements must be described in the SWPPP consistent with CGP Part 7.2.8. | Where there are multiple operators associated with the same site and operators coordinate to carry out monitoring requirements. | high |
| #Q007 | corrective_action | operational | mandatory | Corrective Action Logging | wastewater | If the weekly average of your turbidity monitoring results exceeds the standard benchmark (or your approved alternate benchmark), you are required to conduct follow-up corrective action in accordance with CGP Part 5.2.2 and document any corrective action taken in your corrective action log in accordance with CGP Part 5.4. | If the weekly average of your turbidity monitoring results exceeds the standard benchmark (or your approved alternate benchmark). | high |
| #Q008 | operational | operational | mandatory | Compliance with Enforceable Benchmark Components | wastewater | The operator must comply with all the sampling, reporting, and recordkeeping provisions in CGP Part 3.3, and with the corrective action requirements in CGP Part 5.2.2. | | high |
| #Q009 | reporting | reporting | mandatory | Weekly Average Submission Deadline | wastewater | You must submit reports of your weekly average turbidity results to EPA no later than 30 days following the end of each monitoring quarter. | | high |
| #Q010 | reporting | reporting | mandatory | Reporting No Discharge Periods | wastewater | Operators are required to indicate in the turbidity monitoring report if there are monitoring weeks in which there was no dewatering discharge, or if there is a monitoring quarter with no dewatering discharge. | If there are monitoring weeks or quarters with no dewatering discharge. | high |
| #Q011 | reporting | reporting | mandatory | Reporting Delegated Monitoring Arrangements | wastewater | Operators must also indicate in the turbidity monitoring report if another operator associated with the same site is conducting turbidity monitoring on behalf of the permittee pursuant to CGP Part 3.3. | If another operator associated with the same site is conducting turbidity monitoring on behalf of the permittee. | high |
| #Q012 | reporting | reporting | mandatory | Electronic Reporting Requirement | wastewater | Use EPA’s NPDES eReporting Tool (NeT) to electronically submit quarterly turbidity data, unless, consistent with CGP Part 1.4.2, the operator receives a waiver from the applicable EPA Regional Office. | | high |
| #Q013 | reporting | reporting | mandatory | Paper Reporting Form Requirement | wastewater | If the EPA Regional Office grants approval to use a paper turbidity monitoring report form, the operator must use the form in CGP Appendix K. | If the EPA Regional Office grants approval to use a paper turbidity monitoring report form. | high |
| #Q014 | reporting | reporting | mandatory | Recordkeeping Retention Requirements | wastewater | For each day in which the operator is required to monitor, they must record the monitoring information required by CGP Appendix G, Parts G.10.2 and G.10.3 and retain all such information for a period of at least three years from the date this permit expires or from the date authorization is terminated. | | high |