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**Credit: 50 percent removal | **Credit: 50 percent removal | ||
**Conditions for receiving credit | **Conditions for receiving credit | ||
− | ***Inspect manufactured treatment device a minimum of twice during year 1. Conduct inspections following manufacturer’s instructions/recommendations and any additional instructions [https://stormwater.pca.state.mn.us/index.php?title= | + | ***Inspect manufactured treatment device a minimum of twice during year 1. Conduct inspections following manufacturer’s instructions/recommendations and any additional instructions [https://stormwater.pca.state.mn.us/index.php?title=Contech_Jellyfish_Filter#Use_conditions listed in this section]. Use maintenance indicators provided by manufacturers to determine if maintenance is needed. Maintenance procedures should follow manufacturer’s guidelines. After year 1, follow manufacturers inspection, operation, and maintenance schedule and procedures unless otherwise required or unless year 1 inspections indicate a need for increased inspection and/or operation and maintenance. |
***Comply with appropriate configurations and Use conditions from TAPE. | ***Comply with appropriate configurations and Use conditions from TAPE. | ||
− | ***Comply with [https://stormwater.pca.state.mn.us/index.php?title= | + | ***Comply with [https://stormwater.pca.state.mn.us/index.php?title=Contech_Jellyfish_Filter#Configurations appropriate configurations in the Design Manual] and [https://stormwater.pca.state.mn.us/index.php?title=Contech_Jellyfish_Filter#Use_conditions Use conditions] |
*TP: Tier 2 | *TP: Tier 2 | ||
**Credit: 56 percent removal | **Credit: 56 percent removal | ||
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===Configurations=== | ===Configurations=== | ||
− | For a discussion of Contech The Jellyfish configurations see [https://stormwater.pca.state.mn.us/index.php?title= | + | For a discussion of Contech The Jellyfish configurations see [https://stormwater.pca.state.mn.us/index.php?title=Contech_Jellyfish_Filter#Configurations appropriate configurations in the design, installation, and specification documents]. |
===Use conditions=== | ===Use conditions=== | ||
To receive the full credit, Contech The Jellyfish systems must comply with the following conditions. | To receive the full credit, Contech The Jellyfish systems must comply with the following conditions. | ||
− | #Design, assemble, install, operate, and maintain Contech The Jellyfish systems in accordance with applicable [https://stormwater.pca.state.mn.us/index.php?title= | + | #Design, assemble, install, operate, and maintain Contech The Jellyfish systems in accordance with applicable [https://stormwater.pca.state.mn.us/index.php?title=Contech_Jellyfish_Filter#Links manuals]. |
#The maximum flow rates through the devices are specified below. | #The maximum flow rates through the devices are specified below. | ||
##Basic Treatment: Sized at a hydraulic loading rate of no more than 0.05000 gpm/ft<sup>2</sup> per cartridge. | ##Basic Treatment: Sized at a hydraulic loading rate of no more than 0.05000 gpm/ft<sup>2</sup> per cartridge. | ||
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#Systems are designed to treat a specified water quality volume or annual average runoff volume. The annual average runoff treated can be determined using [https://stormwater.pca.state.mn.us/index.php?title=TP_and_TSS_credits_and_guidance_for_manufactured_treatment_devices_(mtds)#Calculating_annual_volume_treated methods that are specified here]. | #Systems are designed to treat a specified water quality volume or annual average runoff volume. The annual average runoff treated can be determined using [https://stormwater.pca.state.mn.us/index.php?title=TP_and_TSS_credits_and_guidance_for_manufactured_treatment_devices_(mtds)#Calculating_annual_volume_treated methods that are specified here]. | ||
#Each site plan must undergo review before approval of the unit for site installation. | #Each site plan must undergo review before approval of the unit for site installation. | ||
− | #The Jellyfish media shall conform to the specifications described in [https:// | + | #The Jellyfish media shall conform to the specifications described in [https://stormwater.pca.state.mn.us/index.php?title=Contech_Jellyfish_Filter#Links Specifications] and shall be sourced from Contech Environmental Services, Inc. (A Forterra Company) with no substitutions. |
#Follow maintenance procedures given in the most recent version of the [https://www.conteches.com/Portals/0/Documents/Maintenance%20Guides/JF-Maintenance-Guide.pdf?ver=2018-05-31-143301-280 Operation and Maintenance Manual]. | #Follow maintenance procedures given in the most recent version of the [https://www.conteches.com/Portals/0/Documents/Maintenance%20Guides/JF-Maintenance-Guide.pdf?ver=2018-05-31-143301-280 Operation and Maintenance Manual]. | ||
#Install the Contech The Jellyfish in such a manner that flows exceeding the maximum Contech The Jellyfish operating rate are conveyed around the Contech The Jellyfish media and will not resuspend captured sediment. | #Install the Contech The Jellyfish in such a manner that flows exceeding the maximum Contech The Jellyfish operating rate are conveyed around the Contech The Jellyfish media and will not resuspend captured sediment. | ||
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===Inspection, operation, and maintenance=== | ===Inspection, operation, and maintenance=== | ||
− | Meet the conditions specified for [https://stormwater.pca.state.mn.us/index.php?title= | + | Meet the conditions specified for [https://stormwater.pca.state.mn.us/index.php?title=Contech_Jellyfish_Filter#TP_and_TSS_credits the appropriate TP and/or TSS credit]. |
− | Meet the following conditions, unless conditions for [https://stormwater.pca.state.mn.us/index.php?title= | + | Meet the following conditions, unless conditions for [https://stormwater.pca.state.mn.us/index.php?title=Contech_Jellyfish_Filter#TP_and_TSS_credits the appropriate TP and/or TSS credit] are more stringent. |
*2 maintenance visits required annually if annual precipitation exceeds 30 inches; one visit annually if annual precipitation is less than 30 inches | *2 maintenance visits required annually if annual precipitation exceeds 30 inches; one visit annually if annual precipitation is less than 30 inches | ||
CONTECH Engineered Solutions, LLC. The Jellyfish is an engineered filtration system designed to filter pollutants from stormwater runoff. It is classified as a manufactured treatment device (mtd).
This page provides information on pollutant removal credits for Contech The Jellyfish, links to supporting information, and links to information on system design, inspection, operation, and maintenance.
When conditions described in this section are met, applicable Contech The Jellyfish systems are approved for the following removals for total suspended solids (TSS) and total phosphorus (TP).
For more information on credits, see TP and TSS credits and guidance for manufactured treatment devices (mtds)
For a discussion of Contech The Jellyfish configurations see appropriate configurations in the design, installation, and specification documents.
To receive the full credit, Contech The Jellyfish systems must comply with the following conditions.
Credits apply only to the water being treated by a device. The applicable treatment volume must be determined using one of the methods described here.
The Tier 1 credit equals the TAPE-approved credits. Tier 2 credit was determined by analyzing water quality data collected at the Lake Union Ship Canal Test Facility in Seattle, WA. The site consisted of 1.69 acres of impervious surface from parking and roadways areas. The unit size was 6 X 11 feet.
MPCA compiled data from General Use Level Designation Technical Evaluation Report. Below are summary statistics for the device.
TAPE means and medians represent values meeting TAPE criteria for TP (inflow concentrations of 0.1 to 0.5 mg/L) and TSS (inflow concentrations greater than 20 mg/L). Of the 14 samples, TAPE medians and means represent 10 samples for TP and 13 samples for TSS.
Meet the conditions specified for the appropriate TP and/or TSS credit.
Meet the following conditions, unless conditions for the appropriate TP and/or TSS credit are more stringent.