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<td>Vacuum/JetVac combination vehicle [https://www.stormtech.com/download_files/pdf/manual_iso_row.pdf]</td> | <td>Vacuum/JetVac combination vehicle [https://www.stormtech.com/download_files/pdf/manual_iso_row.pdf]</td> | ||
+ | </tr> | ||
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+ | <td>[https://www.prinsco.com/wp-content/uploads/2015/03/HydroStor-HS180-Sediment-Row-A-D-7-202.pdf Prinsco HydroStor Sediment Row]</td> | ||
+ | <td></td> | ||
+ | <td>More frequent during first year of operation, then varies by location</td> | ||
+ | <td></td> | ||
+ | <td></td> | ||
+ | <td>Clean-out when average depth of sediment ranges from 1-3 inches</td> | ||
+ | <td></td> | ||
+ | <td>Vacuum/JetVac combination vehicle</td> | ||
</tr> | </tr> | ||
<tr> | <tr> |
Above ground and below grade storage and settling - installation and maintenance recommendations
Link to this table
Device | Installation notes | Frequency of inspections | Maintenance checklist (link) | Permitted on private land/ Maintenance agreement recommended | Practices for minimizing sediment and trash buildup | Practices for minimizing erosion | Cost considerations (equipment needed and man hours) |
---|---|---|---|---|---|---|---|
Pretreatment row on underground storage/filtration | no data | At least every 6 months for first year of operation, then varies by location | Periodically remove sediment by back-flushing water and vacuuming manhole sump [1] | Vacuum truck | |||
StormTech Isolator Row | Installation instructions available here. | At least every 6 months for first year of operation, then varies by location [2] | Step by step maintenance procedures | Clean-out when average depth of sediment exceeds 3 inches [3] | Vacuum/JetVac combination vehicle [4] | ||
Prinsco HydroStor Sediment Row | More frequent during first year of operation, then varies by location | Clean-out when average depth of sediment ranges from 1-3 inches | Vacuum/JetVac combination vehicle | ||||
Settling chamber/vault | Remove sediment once depth reaches 6 inches or more [5] | ||||||
Oil/water/grit separators | After every major storm but at least once per month [6] | Clean out at least twice per year [7] | |||||
Hydro Dry Screen | Every 3-6 months during first year, then site specific [8] | Maintenance and inspection checklist [9] | Remove sediment once depth exceeds maximum clean-out depth [10] | Vacuum truck | |||
Suntree Nutrient Separating Baffle Box (NSBB) | After each runoff event initially, then at least quarterly. Local and State regulation may require every 90 days [11] | Inspection and maintenance checklist; [12] | Vacuum out sediment chambers when sediment accumulation exceeds 50% storage volume [13] | Vacuum truck | |||
Manhole Baffle Box | Frequently for first two years following installation, then site specific [14] | Fully cleaned at least once per year [15] | Vacuum truck; One half day; Average cost $450 [16] | ||||
Environment 21 StormPro | At least quarterly until a more accurate schedule can be determined [17] | Maintenance data sheet | Sediment should be removed when sediment depth in first chamber is 50% of design sediment storage depth or at least once per year [18] | Truck-mounted sewer and catch basin cleaner with vacuum pump [19] | |||
BaySeparator by BaySaver | At least every 6 months initially, then site specific [20] | Maintenance instructions | Cleaning recommended every 12-36 months or when 2 feet of sediment have accumulated [21] | Vacuum truck [22] | |||
Sump Manhole with SAFL Baffle | 45 minute installation [23] | Three times per year for first two years | Sediment removed before it reaches the bottom of the SAFL baffle | Vacuum truck [24] | |||
Prinsco Preserver Dissipator | 15 minute installation. | Spring and fall inspections recommended. More frequent inspections are recommended following installation until a routine maintenance frequency is be determined. | [25] | Yes | Sediment removed when average depth reaches 1x pipe dia. below the outlet. | na | Vacuum truck |
Deep sump catch basin | Four times per year and at the end of foliage and snow- removal seasons [26] | Four times per year or when deposit depth is greater than ½ depth from bottom of invert to lowest pipe [27] | Hood required | Vacuum truck or clamshell bucket [28] | |||
Forebay/pre-settling basin | Hard floor (concrete or grouted stone) allows definition of bottom and ease of maintenance. Provide appropriate stabilized maintenance access for heavier equipment at no more than 2% cross slope and no more than 10% longitudinal slope | Monthly [29] | Four times per year or when sediment depth is >3 ft. A hard bottom such as concrete facilitates removal, during design ensure forebay is vehicle accessible [30]; [31] | Forebay should be designed to withstand 2-yr and 10-yr velocities without scouring [32] | Vacuum truck skid-loader, or backhoe |
This page was last edited on 9 April 2023, at 10:19.