complete drainage report rev 9

Appendix 1 - Filterra® Activation Checklist C:sNTECH KM ENGINEERED SOLUTIONS Project Name: Company: Site Contact Name: Site Contact Phone/Email Site Owner/End User Name: Site Owner/End User Phone/Email: Preferred Activation Date (provide 2 weeks minimum from date this form is submitted) . Landscaping Construction Throat . Final Pavement . . . Site System Size / Top Coat Complete materials / Opening Plant Species Designation ¥ ea lete / Grass Piles / Debris | Measures 4” Requested P Emerging Removed Min. Height O Yes O Yes O Yes O Yes O No O No O No O No Yes O Yes O Yes O Yes No No No O No Yes Yes Yes O Yes No No No O No Yes Yes Yes O Yes No No No No Yes O Yes O Yes O Yes O No O No O No O No O Yes O Yes O Yes O Yes O No O No O No O No O Yes O Yes O Yes O Yes No No No No Yes Yes Yes Yes No No No No Yes O Yes O Yes O Yes No O No O No O No Attach additional sheets as necessary. NOTE: A charge of $500.00 will be invoiced for each Activation visit requested by Customer where Contech determines that the site does not meet the conditions required for Activation. ONLY Contech authorized representatives can perform Activation of Filterra HC systems; unauthorized Activations will void the system warranty and waive manufacturer supplied Activation and 1st Year Maintenance. Signature Date 12 www.ContechES.com/filterra | 800-338-1122

Appendix 2 - Planting Requirements for Filterra® HC Systems Plant Material Selection * Select plant(s) as specified in the engineering plans and specifications. * Select plant(s) with full root development but not to the point where root bound * Use local nursery container plants only. Ball and burlapped plants are not permitted. * For precast Filterra HC systems with a tree grate, plant(s) must not have scaffold limbs at least 14 inches from the crown due to spacing between the top of the mulch and the tree grate. Lower branches can be pruned away provided there are sufficient GRAFT SOIL SURFACE scaffold branches for tree or shrub development. CROWN ™ * For precast Filterra HC systems with a tree grate, at the time of installation, it is required that plant(s) must be at least 6” above the tree grate opening at installation for all Filterra configurations. This DOES NOT apply to Full Grate Cover designs. * Plant(s) shall not have a mature height greater than 25-30 feet. * A7-15 gallon container size shall be used. * For precast Filterra HC systems, plant(s) should have a single trunk at installation, and pruning may be necessary at activation and maintenance for some of the faster growing species, or species known to produce basal sprouts Plant Installation * During transport protect the plant leaves from wind and excessive jostling. * Prior to removing the plani(s) from the container, ensure the soil moisture is sufficient to maintain the integrity of the root ball. If needed, pre-wet the container plant. * Cut away any roots which are growing out of the container drain holes. Plants with excessive root growth from the drain holes should be rejected. * Plant(s) should be carefully removed from the pot by gently pounding on the sides of the container with the fist to loosen root ball. Then carefully slide out. Do not lift plant(s) by trunk as this can break roots and cause soil to fall off. Extract the root ball in a horizontal position and support it to prevent it from breaking apart. Alternatively, the pot can be cut away to minimize root ball disturbance. * Remove any excess soil from above the root flare after removing plant(s) from container. * Excavate a hole with a diameter 4” greater than the root ball, gently place the plani(s). * If plant(s) have any circling roots from being pot bound, gently tease them loose without breaking

iner. * Excavate a hole with a diameter 4” greater than the root ball, gently place the plani(s). * If plant(s) have any circling roots from being pot bound, gently tease them loose without breaking them * If root ball has a root mat on the bottom, it should be shaved off with a knife just above the mat line. * Plant the tree/shrub/grass with the top of the root ball 1” above surrounding media to allow for settling. * All plants should have the main stem centered in the tree grate (where applicable) upon completion of installation. + With all trees/shrubs, remove dead, diseased, crossed/rubbing, sharply crotched branches or branches growing excessively long or in wrong direction compared to majority of branches. * To prevent transplant shock (especially if planting takes place in the hot season), it may be necessary to prune some of the foliage to compensate for reduced root uptake capacity. This is accomplished by pruning away some of the smaller secondary branches or a main scaffold branch if there are too many. Too much foliage relative to the root ball can dehydrate and damage the plant. * Plant staking may be required. www.ContechES.com/filterra | 800-338-1122 13

Mulch Installation * Only mulch that has been meeting Contech Engineered Solutions’ mulch specifications can be used in the Filterra HC system. * Mulch must be applied to a depth of 3” evenly over the surface of the media. Irrigation Requirements * Each Filterra HC system must receive adequate irrigation to ensure survival of the living system during periods of drier weather. Irrigation sources include rainfall runoff from downspouts and/or gutter flow, applied water through the tree grate or in some cases from an irrigation system with emitters installed during construction. At Activation: Apply about one (cool climates) to two (warm climates) gallons of water per inch of trunk diameter over the root ball. During Establishment: In common with all plants, each Filterra HC plant will require more frequent watering during the establishment period. One inch of applied water per week for the first three months is recommended for cooler climates (2 to 3 inches for warmer climates). If the system is receiving rainfall runoff from the drainage area, then irrigation may not be needed. Inspection of the soil moisture content can be evaluated by gently brushing aside the mulch layer and feeling the soil. Be sure to replace the mulch when the assessment is complete. Irrigate as needed**. Established Plants: Established plants have fully developed root systems and can access the entire water column in the media. Therefore, irrigation is less frequent but requires more applied water when performed. For a mature system assume 3.5 inches of available water within the media matrix. Irrigation demand can be estimated as 1” of irrigation demand per week Therefore, if dry periods exceed 3 weeks, irrigation may be required. It is also important to recognize that plants which are exposed to windy areas and reflected heat from paved surfaces may need more frequent irrigation. Long term care should develop a history which is more site specific. ** Five gallons per square yard approximates 1 inch of water. Therefore, for a 6’ by 6’ Filterra HC approximately 20-60 gallons of water is needed. To ensure even distribution of water it needs to be evenly sprinkled over the entire surface of the filter bed, with special attention to make sure the root ball is completely wetted. NOTE: if needed, measure the time it takes to fill a five-gallon bucket to estimate the applied water

surface of the filter bed, with special attention to make sure the root ball is completely wetted. NOTE: if needed, measure the time it takes to fill a five-gallon bucket to estimate the applied water flow rate then calculate the time needed to irrigate the Filterra HC system. For example, if the flow rate of the sprinkler is 5 gallons/minute then it would take 12 minutes to irrigate a 6’ by 6’ filter. 14 www.ContechES,com/filterra | 800-338-1122

Notes

PDF 1/21 filterra Bioretention Systems s% ° =sNTECH ENGINEERED SOLUTIONS 9025 Centre Pointe Drive, Suite 400 West Chester, OH 45069 info@conteches.com | 800-338-1122 www.ContechES.com © 2021 Contech Engineered Solutions LLC, a QUIKRETE Company AIL RIGHTS RESERVED. PRINTED IN THE USA. NOTHING IN THIS CATALOG SHOULD BE CONSTRUED AS A WARRANTY. APPLICATIONS SUGGESTED HEREIN ARE DESCRIBED ONLY TO HELP READERS MAKE THEIR OWN EVALUATIONS AND DECISIONS, AND ARE NEITHER GUARANTEES NOR WARRANTIES OF SUITABILITY FOR ANY APPLICATION. CONTECH MAKES NO WARRANTY WHATSOEVER, EXPRESS OR IMPLIED, RELATED TO THE APPLICATIONS, MATERIALS, COATINGS, OR PRODUCTS DISCUSSED HEREIN. ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND ALL IMPLIED WARRANTIES OF FITNESS FOR ANY PARTICULAR PURPOSE ARE DISCLAIMED BY CONTECH. SEE CONTECH’S CONDITIONS OF SALE (AVAILABLE AT WWW.CONTECHES.COM/COS) FOR MORE INFORMATION.

Cascade Design Summary West Essex Highlands West Orange Twp, NJ 8/26/24 Information provided by Engineer: • Presiding Agency = NJDEP • TSS Removal Required = 50% Sizing Summary: The Cascade Separator is a hydrodynamic separator designed to protect waterways from stormwater runoff. The Cascade Separator is commonly used as a standalone stormwater quality control practice that provides pretreatment to detention, infiltration, bioretention, and rainwater harvesting systems. This innovative treatment product excels at sediment capture and retention while also removing hydrocarbons, trash, and debris from the stormwater runoff. The Cascade Separator is NJCAT verified and as a result has received final certification from the NJDEP for 50% TSS removal. For this project, each Cascade Separator was designed to treat the water quality design storm. The required Cascade model size was based on the information provided by the Engineer of Record summarized below: Site Designation WQ Flow Rate (cfs) Cascade Separator Model Size NJDEP Certified MTFR (cfs) MTD-1 MTD-2 MTD-19 MTD-20 0.26 0.35 1.68 0.38 CS-3 CS-3 CS-4 CS-3 1.02 1.02 1.80 1.02 Maintenance: Like any stormwater best management practice, the Cascade Separator requires regular inspection and maintenance to ensure optimal performance. Maintenance frequency will be driven by site conditions. Bi-annual visual inspections are recommended, at which time the accumulation of pollutants can be determined. On average, the Cascade Separator requires annual removal of accumulated pollutants. Thank you for the opportunity to present this information to you and your client. Sincerely, Taylor Murdock Stormwater Design Engineer Contech Engineered Solutions LLC http://www.conteches.com/ ©2017 CONTECH Engineered Solutions 7037 Ridge Road, Suite 350 | Hanover, MD 21076 Office: 443.457.1500 Fax: 410.740.8492

CASCADE SEPARATOR DESIGN NOTES THE STANDARD CS-3 CONFIGURATION IS SHOWN 180° A A FLOW FLOW SITE SPECIFIC DATA REQUIREMENTS STRUCTURE ID WATER QUALITY FLOW RATE (cfs [L/s]) TOP SLAB ACCESS (SEE FRAME AND COVER DETAIL) PEAK FLOW RATE (cfs [L/s]) RETURN PERIOD OF PEAK FLOW (yrs) PLAN VIEW B-B ® RIM ELEVATION www.ContechES.com NOT TO SCALE PIPE DATA: INVERT MATERIAL DIAMETER INLET PIPE 1 INLET PIPE 2 OUTLET PIPE NOTES / SPECIAL REQUIREMENTS: CONTRACTOR TO GROUT TO FINISHED GRADE FRAME AND COVER GRADE RINGS/RISERS (DIAMETER VARIES) NOT TO SCALE VARIES TOP OF CENTER CHAMBER (EXTENSIONS AVAILABLE AS REQUIRED) B INLET PIPE B OUTLET PIPE (3'-0" [914]) 1'-81 4" [514] I:\COMMON\CAD\TREATMENT\21 CASCADE\40 STANDARD DRAWINGS\NJ SPECIFICATION DTLS\DWG\IN PROCESS\CS-3-NJ-DTL.DWG 6/26/2023 2:20 PM 36" [914] I.D. MANHOLE STRUCTURE PERMANENT POOL ELEVATION FIBERGLASS OR ALUMINUM INTERNAL COMPONENTS SOLIDS STORAGE SUMP ELEVATION A-A NOT TO SCALE GENERAL NOTES 1. CONTECH TO PROVIDE ALL MATERIALS UNLESS NOTED OTHERWISE. 2. FOR SITE SPECIFIC DRAWINGS WITH DETAILED STRUCTURE DIMENSIONS AND WEIGHT, PLEASE CONTACT YOUR CONTECH ENGINEERED SOLUTIONS LLC REPRESENTATIVE. www.ContechES.com 3. CASCADE SEPARATOR WATER QUALITY STRUCTURE SHALL BE IN ACCORDANCE WITH ALL DESIGN DATA AND INFORMATION CONTAINED IN THIS DRAWING. CONTRACTOR TO CONFIRM STRUCTURE MEETS REQUIREMENTS OF PROJECT. 4. CASCADE SEPARATOR STRUCTURE SHALL MEET AASHTO HS20 LOAD RATING, ASSUMING EARTH COVER OF 0' - 2' [610], AND GROUNDWATER ELEVATION AT, OR BELOW, THE OUTLET PIPE INVERT ELEVATION. ENGINEER OF RECORD TO CONFIRM ACTUAL GROUNDWATER ELEVATION. CASTINGS SHALL MEET AASHTO M306 AND BE CAST WITH THE CONTECH LOGO. 5. CASCADE SEPARATOR STRUCTURE SHALL BE PRECAST CONCRETE CONFORMING TO ASTM C478 AND AASHTO LOAD FACTOR DESIGN METHOD. 6. ALTERNATE UNITS ARE SHOWN IN MILLIMETERS [mm ]. INSTALLATION NOTES A. ANY SUB-BASE, BACKFILL DEPTH, AND/OR ANTI-FLOTATION PROVISIONS ARE SITE-SPECIFIC DESIGN CONSIDERATIONS AND SHALL BE SPECIFIED BY ENGINEER OF RECORD. B. CONTRACTOR TO PROVIDE EQUIPMENT WITH SUFFICIENT LIFTING AND REACH CAPACITY TO LIFT AND SET THE CASCADE SEPARATOR MANHOLE STRUCTURE. C. CONTRACTOR TO INSTALL JOINT SEALANT BETWEEN ALL STRUCTURE SECTIONS AND ASSEMBLE STRUCTURE. D. CONTRACTOR TO PROVIDE, INSTALL, AND GROUT INLET AND OUTLET PIPE(S). MATCH PIPE INVERTS WITH ELEVATIONS SHOWN.

TRACTOR TO INSTALL JOINT SEALANT BETWEEN ALL STRUCTURE SECTIONS AND ASSEMBLE STRUCTURE. D. CONTRACTOR TO PROVIDE, INSTALL, AND GROUT INLET AND OUTLET PIPE(S). MATCH PIPE INVERTS WITH ELEVATIONS SHOWN. ALL PIPE CENTERLINES TO MATCH PIPE OPENING CENTERLINES. E. CONTRACTOR TO TAKE APPROPRIATE MEASURES TO ASSURE UNIT IS WATER TIGHT, HOLDING WATER TO FLOWLINE INVERT MINIMUM. IT IS SUGGESTED THAT ALL JOINTS BELOW PIPE INVERTS ARE GROUTED. www.contechES.com 9100 Centre Pointe Dr., Suite 400, West Chester, OH 45069 800-338-1122 513-645-7000 513-645-7993 FAX CS-3 CASCADE SEPARATOR STANDARD DETAIL