12444725Q0018 - Q and A.pdf
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- Attached to
- Particulate Filter Changeout-Maintenance-Equipment Calibration Federal contract opportunity
- Solicitation number
- 12444725Q0018
About this file
This document is a Questions and Answers (Q&A) file for a federal contract opportunity involving particulate filter maintenance and changeout services for the USDA Forest Service's Ouachita National Forest. The Q&A provides detailed technical insights into filter replacement procedures and equipment specifications. Key details include a weekly filter changeout requirement involving four different types of filters (Teflon and Nylon at 2.5 particulate matter, Quartz at 2.5 particulate matter, and Teflon at 10 particulate matter), with a standardized replacement protocol that requires operators to receive unexposed filters, travel to the collection site, pause data collection, replace filters, record data, and ship exposed filters using pre-labeled boxes. The maintenance process involves four sampling units with a four-filter manifold, where three samplers are automatic and one requires manual lifting of the solenoid manifold. Typical maintenance challenges include electricity interruption, vandalism, and mechanical failures, with operators instructed to contact the California lab for specific guidance. Additional historical data and program information can be accessed online at https://vista.cira.colostate.edu/Improve/improve-program/.
View the file
Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| 12444725Q0018_Filter Maintenance Combined SS.pdf | ||
| Attach. 4 - Air Monitoring Station-Menato SIte-MAP.pdf | ||
| Attach. 2 - WD 2015-5139.pdf | ||
| Attach. 3 - Air Monitoring Station-Site_Contours-MAP.pdf | ||
| Attach. 1 - SOW.pdf |
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Text version
12444725Q0018
Questions and Answers
Q1. What is the frequency of visits for filter change-out and calibration is weekly or monthly?
A1: The requirement is for weekly changeouts. The payment unit is by month.
Q2. What type of filters currently used at the site (e.g., Teflon, Nylon, Quartz, etc.) and their replacement protocols?
A2: There are 4 filters: Teflon (2.5 particulate matter), Nylon (2.5 particulate matter), Quartz (2.5 particulate matter), and Teflon (10 particulate matter). Replacement protocol requires operator to receive shipment of unexposed filters, travel to and from collection site, follow on-screen prompts to pause data collection, record data concerning exposed filters, replace filters, record data concerning unexposed filters, resume data collection and ship exposed filters and data sheets using pre labeled boxes. Additional steps are periodically required, and instructions are provided with the corresponding filter shipment. For circumstances that fall outside the Standard Operating Procedures, the operator must call helpdesk for guidance. All activities generally occur every Tuesday without exception.
Q3. A description or lists of the monitoring equipment and instrumentation used, including model numbers if available?
A3: A description and diagram is provided. Model number information is not readily available. There are four of these samplers.
The solenoid manifold is lifted (3 are automatic, one you have to lift manually), the cartridge with filters is lifted out and the new cartridge is inserted. Lower the solenoid manifold back into place. Do this for the other 3 units. All 4 cartridges are put in the mail pouch with the SD card.
Data is recorded off the screen onto the sheet of paper that goes into the pouch also.
Each sampler has a four-filter manifold. The manifold with the solenoids sits directly above the filter cassettes and is raised or lowered as a unit to unload and load the filters. The four filter cassettes are held in a cartridge (shown in diagram below) that is designed to only allow one orientation in the sampler. Fully prepared date- and site labeled filter cartridges, along with memory cards, are sent from the analysis laboratory to the field and are returned in special mailing containers to prevent confusion concerning the order of sampling among the filters.
Q4. Any available historical data logs or previous technician reports that could provide context on the routine maintenance tasks, filter handling process, or typical issues encountered.
A4. The Forest Service does not maintain the historical data logs. Typical issues include electricity interruption, vandalism, or mechanical failure. Under these conditions the operator would contact the California lab for instructions to fix. There is a monitor screen which walks one through the operating procedure. Historical data and additional information is available online at https://vista.cira.colostate.edu/Improve/improve-program/ https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fvista.cira.colostate.edu%2FImprove%2Fimprove-program%2F&data=05%7C02%7CPaul.Foster%40usda.gov%7C3f58710f0c384200817708dd792a1802%7Ced5b36e701ee4ebc867ee03cfa0d4697%7C1%7C0%7C638799943888645584%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=7sp2VpglX4PQtPlKZv01vWKlGfNAhh1CLlZlOR0m7O0%3D&reserved=0
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