Systems, apparatus, and methods for maintenance of stormwater management systems
Stormwater management systems, methods, and apparatuses for containing and filtering runoff may be provided. In one implementation, a stormwater management system may include a stormwater chamber configured for placement underground; a flared end ramp at the inlet of the stormwater chamber that is configured to receive runoff containing sediment and to distribute the sediment across a width of the stormwater chamber; and a filtration fabric situated beneath the stormwater chamber, the filtration fabric being configured to capture sediment from the runoff in the stormwater chamber while the runoff flows out of the stormwater chamber.
1. A stormwater management system for containing and filtering runoff, the stormwater management system comprising:
at least one stormwater chamber configured for placement underground, the stormwater chamber being configured to store runoff and extending between a first end cap with at least one opening and a second end cap;
a flared end ramp configured for placement within the stormwater chamber, the flared end ramp including:
an inlet end configured to receive the runoff from an inlet pipe extending through the at least one opening in the first end cap,
an outlet end configured to distribute the runoff across a width of the stormwater chamber, and
an inclined surface extending continuously between the inlet end and the outlet end of the flared end ramp; and
a filtration fabric configured to be situated beneath at least a portion of the open bottom of the stormwater chamber, wherein the filtration fabric is configured to capture sediment from the runoff in the stormwater chamber while the runoff flows out of the stormwater chamber.
2. The stormwater management system of claim 1 , wherein the stormwater chamber comprises at least one of:
an open-bottom chamber having a side wall with an arch-shaped, round, elliptical, or polygonal cross-section, or
a cylindrical, corrugated pipe.
3. The stormwater management system of claim 1 , wherein the filtration fabric is a single layer of a woven geotextile configured to have a permittivity of about 0.15 sec −1 .
4. The stormwater management system of claim 3 , wherein the single layer of the filtration fabric is configured to extend continuously beneath an entire area of the open bottom of the stormwater chamber.
5. The stormwater management system of claim 1 ,
wherein the inlet end of the flared end ramp has a smaller width than the outlet end of the flared end ramp,
wherein the inclined surface is angled laterally outward from the inlet end toward the outlet end, and
wherein the flared end ramp further comprises at least one foot configured to support the flared end ramp, the at least one foot being located at the outlet end of the flared end ramp and extending laterally from the flared end ramp.
6. The stormwater management system of claim 5 , wherein the flared end ramp includes at least one support foot extending laterally from a first side and a second side of the outlet end, the at least one support foot forming the widest portion of the flared end ramp.
7. The stormwater management system of claim 6 , wherein a distance between a first outer edge and a second outer edge of the at least one support foot is greater than the width of the stormwater chamber.
8. The stormwater management system of claim 5 , wherein the at least one support foot is configured to secure the flared end ramp relative to the stormwater chamber.
9. The stormwater management system of claim 1 , comprising a plurality of stormwater chambers arranged side-by-side in an array, wherein at least one additional stormwater chamber in the array includes a second flared end ramp and a second filtration fabric.
10. The stormwater management system of claim 9 , wherein the plurality of stormwater chambers is fluidly connected and is configured to receive the runoff from a surface-level drain and to disperse the filtered runoff into at least one of the earth or an underground drainage structure.
11. The stormwater management system of claim 1 , further comprising a non-woven geotextile fabric configured to cover the first end cap and at least a portion of an exterior surface of the stormwater chamber.
12. A stormwater management system for containing and filtering runoff, the stormwater management system comprising:
an inlet apparatus configured to receive runoff from a surface-level drain, the inlet apparatus including at least one of an elevated bypass manifold or an overflow weir;
a first stormwater chamber configured for placement underground, the first stormwater chamber being configured to store the runoff and extending between a first end cap with at least one opening and a second end cap;
an inlet pipe configured to fluidly connect with the inlet apparatus and to extend through the at least one opening in the first end cap into the first stormwater chamber;
a flared end ramp configured for placement within the first stormwater chamber, the flared end ramp including:
an inlet end configured to receive the runoff from the inlet pipe,
an outlet end configured to distribute the runoff across a width of the first stormwater chamber, and
an inclined surface extending continuously between the inlet end and the outlet end of the flared end ramp;
a filtration fabric configured to be situated beneath at least a portion of the open bottom of the first stormwater chamber, wherein the filtration fabric is configured to capture sediment from the runoff in the first stormwater chamber while the runoff flows out of the first stormwater chamber;
a non-woven geotextile fabric configured to cover the first end cap and at least a portion of an exterior surface of the first stormwater chamber; and
at least one additional stormwater chamber arranged side-by-side with the first stormwater chamber to form an array of stormwater chambers, wherein the array of stormwater chambers is fluidly connected via the inlet apparatus and is configured to receive the runoff from the inlet apparatus and to disperse filtered runoff into at least one of the earth or an underground drainage structure.
13. The stormwater management system of claim 12 , wherein the first stormwater chamber comprises at least one of:
an open-bottom chamber having a side wall with an arch-shaped, round, elliptical, or polygonal cross-section, or
a cylindrical, corrugated pipe.
14. The stormwater management system of claim 12 , wherein the filtration fabric is a single layer of a woven geotextile configured to have a permittivity of about 0.15 sec −1 , the single layer of the filtration fabric being configured to extend continuously beneath an entire area of the open bottom of the first stormwater chamber.
15. The stormwater management system of claim 12 ,
wherein the inlet end of the flared end ramp has a smaller width than the outlet end of the flared end ramp,
wherein the inclined surface is angled laterally outward from the inlet end toward the outlet end, and
wherein the flared end ramp further comprises at least one support foot configured to support the flared end ramp and to secure the flared end ramp relative to the first stormwater chamber, the at least one foot being located at the outlet end of the flared end ramp and extending laterally from the flared end ramp.
16. The stormwater management system of claim 15 , wherein the flared end ramp includes a single support foot extending laterally between a first side of the outlet end and a second side of the outlet end, the single support foot forming the widest portion of the flared end ramp.
17. The stormwater management system of claim 16 , wherein a distance between a first outer edge and a second outer edge of the single support foot is greater than the width of the first stormwater chamber.
18. The stormwater management system of claim 12 , wherein at least a second stormwater chamber in the array of stormwater chambers includes a second flared end ramp and a second filtration fabric.
19. The stormwater management system of claim 12 , wherein the inlet apparatus is configured to convey runoff to the at least one additional stormwater chamber when the first stormwater chamber is unable to receive additional runoff.