5.1 System commissioning
This section should provide a general description of the system commissioning and monitoring program that will be implemented to confirm the AVMS was installed correctly, equipment is working, and able to meet the proposed performance metrics during the AVMS startup (see Section 3.1).
The recommended time frames for system commissioning are provided in Table 1, following, except when any of the following conditions are present, then Table 2 should be followed:
- Groundwater, considering season variation, is within three (3) feet of the lowest elevation of the structure to be mitigated that can transmit vapor into the structure, such as a basement or elevator shaft;
- Documented indoor air concentrations are near or above the acceptable indoor air concentrations for acute compounds;
- Structure being mitigated is a school, daycare, or medical facility; or
- Acute compounds at concentrations greater than 10x the applicable SSVIAC or SSTLs in the sub slab soil gas are present.
Alternate proposals based on site specific considerations can always be made for EGLE review. If continuous tracking through telemetry is incorporated into the monitoring program at points of compliance as well as in the exhaust stack(s) and the response time will be less than 1 week, a reduction in monitoring frequency may be acceptable with appropriate justification (i.e., appropriate monitoring data and frequency of data collection).
5.2 Operation, maintenance and monitoring (OM&M)
An OM&M Plan is developed during the commissioning phase after the installation has taken place. The design document should not include the specific details of the OM&M Plan. This section is included in the design document only as a reminder for the design firm to consider how and where the AVMS will be monitored so that the monitoring points and components will be installed during the installation process. If an OM&M Plan is not provided (recommended), this section should identify that one will be developed based on the information obtained during the commissioning process, so that the installed AVMS, the maintenance requirements of the equipment utilized, and the final operating parameters are accounted for in the OM&M Plan.
If specific details are provided, EGLE will review the proposed OM&M Plan as if the AVMS was installed which may result in unnecessary complications during the review of the AVMS design submittal. The approval for this type of review will contain language that modification to the OM&M Plan may be necessary, depending on the final installed system.
Table 1: Recommended time frames – AVMS commissioning
| Monitoring time frame(s) | Time-period #1 duration: 4 days [Week 1] 1st month of operation |
Time-period #2 duration: 3 week(s) [Weeks 2, 3, 4] 1st month of operation |
Time-period #3 duration: 2 months [Months 2 and 3] 1st quarter |
|---|---|---|---|
| Meets previous performance metrics for previous period | Performance metrics are measured and met daily from Day 1 through Day 4 | Performance metrics are measured and met Week 2 through Week 4 | Performance metrics are measured and met monthly from Month 2 and Month 3 |
| Visual inspection of equipment and labels | As necessary | Weekly | Monthly |
| Verification of system operation | Daily | Weekly | Monthly |
| Pressure Field Extension (PFE) monitoring | Daily | Weekly | Monthly |
| Notice to tenants | Initial date of notification shall be based upon system activation and updated if any modifications to the AVMS are required. | Initial date of notification shall be based upon system activation and updated if any modifications to the AVMS are required. | Initial date of notification shall be based upon system activation and updated if any modifications to the AVMS are required. |
| Identification of changes to the building and surrounding area | Owner should notify an appropriate contractor when changes occur to prompt further evaluation. Changes should be confirmed through site visits. | Owner should notify an appropriate contractor when changes occur to prompt further evaluation. Changes should be confirmed through site visits. | Owner should notify an appropriate contractor when changes occur to prompt further evaluation. Changes should be confirmed through site visits. |
| System maintenance | Information and timeframes should be established during commissioning and based on the installed equipment or materials. | Information and timeframes should be established during commissioning and based on the installed equipment or materials. | Information and timeframes should be established during commissioning and based on the installed equipment or materials. |
Table 2: Recommended time frames – AVMS commissioning
| Monitoring time frame(s) | Time-period #1 duration: 4 days [Week 1] 1st month of operation |
Time-period #2 duration: 3 week(s) [Weeks 2, 3, 4] 1st month of operation |
Time-period #3 duration: 3 months [Months 2, 3, 4] 1st quarter |
Time-period #4 duration: 3 quarters [Months 5-12] Remaining year |
|---|---|---|---|---|
| Meets previous performance metrics for previous period | Performance metrics are measured and met daily from Day 1 through Day 4 | Performance metrics are measured and met Week 2 through Week 4 | Performance metrics are measured and met monthly from Month 1 through Month 4 | Performance metrics are measured and met quarterly from Month 5 through Month 12 |
| Visual inspection on equipment and labels | As necessary | Weekly | Monthly | Quarterly |
| Verification of system operation | Every day or every other day | Weekly | Monthly | Quarterly |
| Air monitoring as a performance specification | Information will be identified | Information will be identified | Information will be identified | Information will be identified |
| Air monitoring and discharge calculations | Information will be identified | Information will be identified | Information will be identified | Information will be identified |
| Pressure Field Extension (PFE) monitoring | Daily | Weekly | Monthly | Quarterly |
| Notice to tenants | Initial date shall be based upon AVMS activation and updated if any modifications to the system are required. | Initial date shall be based upon AVMS activation and updated if any modifications to the system are required. | Initial date shall be based upon AVMS activation and updated if any modifications to the system are required. | Initial date shall be based upon AVMS activation and updated if any modifications to the system are required. |
| Identification of changes to the building and surrounding area | Owner should identify when changes occur to the oversight contactor for further evaluation. It should be confirmed through site visits | Owner should identify when changes occur to the oversight contactor for further evaluation. It should be confirmed through site visits. | Owner should identify when changes occur to the oversight contactor for further evaluation. It should be confirmed through site visits. | Owner should identify when changes occur to the oversight contactor for further evaluation. It should be confirmed through site visits. |
| System maintenance and modifications | As identified through monitoring and specifications. | As identified through monitoring and specifications. | As identified through monitoring and specifications. | As identified through monitoring and specifications. |