Underground Systems: Workshop & Info Session

Transcription

1 Underground Systems: Workshop & Info Session Dana Hinaman Stormwater Consultant November 8th, 2018

2 Stormwater Solutions HEL-COR CMP Detention System Jellyfish Filter System CDS Pretreatment System Filterra Bioretention System Terre Arch Concrete Detention System ChamberMaxx Retention System Stormwater Management StormFilter UrbanGreen Rainwater Harvesting with a SRPE Cistern Bridges, Drainage, Storm Sewer, Sanitary Sewer, Stormwater Management, Erosion Control, Retaining Walls, Roadway & Earth Stabilization

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4 Design Example #1

5 Design Example #2

6 Design Example #3: Underground Wetpond

7 Underground Wetpond Weir Details Weir Details Water Quality Weir Sized for the WQ volume and orifice sized for drawdown Detention weir very downstream end of entire system Controls allowable peak flows Sized orifice for draindown time

8 Design Example #4

9 Design Example #5 Terre Arch with Water Quality Volume + 20% Sediment Storage + Flood Control

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11 Design Example #1

12 Design Example #2

13 NJDEP Certified Products Standardized testing protocol for LAB testing 50% TSS removal for HDS products 80% TSS removal for Filter Products Extended Detention pretreatment units (HDS) should be NJDEP approved and sized / scaled per NJDEP

14 CDS: Key Features Adds the only non-blocking screening technology available to all the benefits of swirl concentration Captures neutrally buoyant debris, protecting downstream outlet controls and waterways Isolated sump eliminates scour Multiple configurations: multiple inlet pipes; surface inlet; offline; inline Internal or external high flow bypass Lab and 3 rd party field testing, approved by NJDEP and others

15 Direct Screening CDS Indirect Screening Key Features: CDS Screen captures neutrally buoyant materials missed by other separator systems 4700-MICRON Screen is hydraulically designed to be selfcleaning and will not become blocked Screen pushes debris to center to expedite settling Can be designed for various target particle sizes 2400-MICRON

16 Installed Internal Components Oil Baffle (over outlet pipe) Diversion Weir Separation Chamber

17 Installation

18 Installation

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20 Maintenance Start Finish

21 TAPE Certified Products Standardized testing protocol for FIELD testing 80% TSS removal for Filter Products Filters should have highest level of testing (GULD) TAPE should really only be referenced for Filter Products

22 Stormwater Management StormFilter

23 Small Footprint Three Cartridge Options Low Drop ft 1.5 ft ft System Size System Size System Size

24 StormFilter Media PhosphoSorb Perlite CSF Leaf Media ZPG Sediments Phosphorous Oil and Grease Soluble Metals Organics Nutrients

25 Installation

26 StormFilter Maintenance

27 What is Filterra? Filterra Pre-engineered and Pre-packaged Stormwater Bioretention Treatment: Pretreatment Top Layer (Mulch) Engineered Biofiltration Media Underdrain System Landscape Tree or Shrub Bucks County Justice Center Doylestown, PA

28 Key Benefits Crossridge Subdivision Richmond, VA Small Footprint Filterra typically less than 1% of drainage area Contrasts to 5%-10% for standard bioretention cells Full use of land Ideal for urban retrofit High Pollutant Removals 85% TSS 70% TP 43% TN Ease of Maintenance

29 Detention & Subsurface Infiltration CMP Plastic Concrete DYODS Tool Design Your Own Detention System

30 Key Considerations Effective depth Limiting widths/lengths Infiltration opportunities / Minimizing footprint Maintenance

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32 Concrete: Terre Arch Terre Arch 26 (TA26) 4 connected arches Each arch: 26 tall x 52 wide Total size: 8 x 19 x cf storage per piece Terre Arch 48 (TA48) 3 connected arches Each arch: 48 tall x 72 wide Total size: 8 x 20 x cf storage per piece

33 Terre Arch Benefits Modularity fits into any project size HS-25 load bearing rating with 12 cover from top of arch to top of pavement Quick easy installation minimizes handling & installation cost (30,000 to 50,000 cft/day) Only chamber or crate solution that can be fully physically accessed

34 Distribution Box

35 Concrete: Terre Arch

36 End Caps

37 Conseal Between Arches

38 Plastic: ChamberMaxx Plastic open-bottom infiltration chambers Reduce and/or eliminate site runoff Meets LEED and LID objectives Cost effective for shallow applications

39 Sizing 49 CF of storage per chamber 76.7 CF of installed storage volume Std. = 6 of surrounding stone w/ 40 % porosity

40 Structural Design Can handle HS-20 / HS-25 and HL-93 live loads 18 in minimum cover and 8 ft maximum cover Standard Chamber Spacing 5.6in

41 ChamberMaxx Installation

42 Vertical Cross-Section Comparisons 12 (min) 12 (min) 12 (min) (min) 3 (min) 60 Chamber Effective Depth: 7.75 feet 78 CMP Effective Depth: 7.75 feet

43 Plastic: DuroMaxx Strength and durability Available up to 120 diameter Joint tightness available for all applications Used for CSO overflow, cistern / tank application, glycol storage

44 Joint Options - Gasketed & Welded Soil Tight Culvert Joints Plain End Pipe with Flat Steel Bands and Gaskets, Not Watertight Non-Reinforced Bell & Spigot Ends, Watertight to 3 psi Reinforced bell & Spigot, Watertight to 15 psi Welded Joints, Watertight to 30 psi

45 CMP Flexible configurations and coatings Typically aluminized Fully perforated pipe available Diameters from 12 to 144 Relatively low cover requirements

46 CMP Larger pipe provides storage at a lower cost per cubic foot 96 Dia 50.2ft 3 /ft 48 Dia 12.5ft 3 /ft 2x the diameter = 4x the storage

47 Pipe Configuration Barrels Manifold / Header

48 Manholes

49 Outlet Control Structures

50 DYODS

51 DYODS

52 Engineering Drawings

53 Your Local Stormwater Team Dana Hinaman, Stormwater Consultant Kelsey Stevens, Stormwater Design Engineer Nick Rein, Sales Engineer Samantha Brown, Regional Regulatory Manager

54 QUESTIONS?