J_2024 05 09_West Orange Stormwater Management Plan

jj&tate of ^Nefcr CHRIS CHRISTIE Governor KIM GUADAGNO Lt. Governor Department of Environmental Protection 401-02B Bureau of Nonpoint Pollution Control Division of Water Quality Post Office Box 420 Trenton, New Jersey 08625-0420 609-633-7021 Fax: 609-777-0432 http://www.state.nj.us/dep/dwq/bnpc_home.htm BOB MARTIN Commissioner September 1,2011 Mark B. Miller, P.G. AquaShield, Inc. 2705 Kanasita Drive Chattanooga, Tennessee 37343 Re: MTD Laboratory Test Certification for the Aqua-Filter by AquaShield, Inc. Effective Date: September 1,2011 Expiration Date: September 1,2013 TSS Removal Rate: 80% Dear Mr. Miller: The Stormwater Management Rules at N J.A.C. 7:8 allow the use of manufactured treatment devices (MTDs) for compliance with the design and performance standards provided that the pollutant removal rates have been verified by New Jersey Corporation for Advanced Technology, NJCAT, and certified by the New Jersey Department of Environmental Protection (NJDEP). The certification process was revised through the ‘Transition for Manufactured Treatment Devices,” dated July 15, 2011. NJDEP has determined that Aqua-Filter by AquaShield, Inc. is consistent with the criteria under A. Manufactured Treatment Devices with Interim Certifications. Therefore, NJDEP certifies the use of the coarse perlite media filtration cartridge of the Aqna-Filter by AquaShield, Inc. with an 80% TSS removal rate, provided that the project design is consistent with the following conditions: 1. The various models and associated water quality flow capacities shall be sized for the peak flow of the New Jersey Water Quality Design Storm per N. J.A.C. 7:8-5. 2. The peak inflow of the Water Quality Design Storm is limited to 0.01 cfs per square foot of filter area. The maximum inflow area per square foot of filter area is limited to 0.01 acres of impervious area. Note: One row of filter media is typically 12 fi2. New Jersey is an Equal Opportunity Employer. Printed on Recycled Paper and Recyclable

3. Sufficient draindown cartridges must be placed in any system to ensure that the draindown time for the Water Quality Design Storm does not exceed thirty-six (36) hours. 4. The Aqua-Filter is certified as an off-line system. Any flow above the New Jersey Water Quality Design Storm must be bypassed around the system. 5. A pre-treatment device, such as the Aqua-Swirl, must be used as part of the treatment train. Any manufactured treatment device utilized for pre-treatment must be certified with a minimum of 50% TSS removal rate. Sediment storage capacity shall be determined by the pre-treatment device. 6. If the Water Quality Design Storm is controlled by upstream detention / attenuation for 12 hours or more, the pre-treatment requirement of condition 5 is met. 7. The maintenance plan for the sites using this device shall incorporate at a minimum, the maintenance requirements for the Aqua-Filter shown attached. In addition to the attached, any project with a Stormwater BMP subject to the Stormwater Management Rules, N.J.A.C. 7:8, must include a detailed maintenance plan. The detailed maintenance plan must include all of the items identified in Stormwater Management Rules, N.J.A.C. 7:8-5.8. Such items include, but are not limited to, the list of inspection and maintenance equipment and tools, specific corrective and preventative maintenance tasks, indication of problems in the system, and training of maintenance personnel. Additional information can be found in Chapter 8: Maintenance of the New Jersey Stormwater Best Management Manual. NJDEP anticipates proposing further adjustments to this process through the readoption of the Stormwater Management Rules. Additional information regarding the implementation of the Stormwater Management Rules, N.J.A.C. 7:8, are available at www.njstormwater.org. If you have any questions regarding the above information, please contact Ms. Sandra Blick of my office at (609) 633-7021. Ed Frankel, P.P., Acting Bureau Chief Bureau of Nonpoint Pollution Control C: Richard S. Magee, NJCAT Chron file

STORMWATER TREATMENT SOLUTIONS Aqua-Filter™ Stormwater Filtration System Inspection and Maintenance Manual AquaShield, Inc. 2705 Kanasita Drive, Chattanooga, TN 37343 Phone: (423) 870-8888 Fax: (423) 826-2112 Email: info@aquashieldinc.com

AquaShield™, Inc. Table of Contents Introduction / Installation / Maintenance Introduction to AquaShield™ Stormwater Treatment Systems Operation of the Aqua-Filter™ Stormwater Treatment System Installation of the Aqua-Filter™ System Inspection & Maintenance of the Aqua-Filter™ System Appendix 2705 Kanasita Drive, Hixson, Tennessee 37343 Phone (423) 870-8888 Fax (423) 870-2112 www.AquaShieldInc.com

Of AquaShield™, Inc Stormwater Treatment Solutions The highest priority of AquaShield™, Inc. (AquaShield™) is to protect waterways by providing stormwater treatment solutions to businesses across the world. These solutions have a reliable foundation based on over 20 years of water treatment experience. Local regulators, engineers, and contractors have praised the AquaShield™ systems for their simple design and ease of installation. All the systems are fabricated from High-Density Polyethylene (HDPE), and contractors prefer the quick and simple installation of our structures that saves them money. The AquaShield™ line of patented high levels of stormwater treatment: stormwater treatment products provide for ♦ The Aqua-Swirl™ Stormwater Treatment System is a hydrodynamic separator, which provides a highly effective means for the removal of TSS (fine to coarse sediment), floating debris and free-oil. • The Aqua-Filter™ Stormwater Filtration System is an in-line stormwater filtration system capable of gross contaminant removal, and the removal of fine sediments, waterborne hydrocarbons, heavy metals (i.e. zinc) and nutrients such as phosphorous and nitrogen. Aqua-Swirl™ Stormwater Treatment System Aqua-Filter™ Stormwater Filtration System

n Aqua-Filter™ Stormwater Filtration System The Aqua-Filter™ Stormwater4 Filtration System is designed for projects that require advanced treatment for stormwater that discharges to sensitive receiving waters. Each system is custom engineered for site-specific needs. The patented Aqua-Filter™ filtration system utilizes a unique "treatment-train" approach. The system includes an AquaSwiri™ designed for gross contaminant removal, which pre-treats stormwater before entering the filtration chamber. A variety of natural filter media are used in the Filtration chamber to complete the treatment process by polishing the stormwater, and removing greater than 80% of fine-grained sediments and waterborne pollutants. Aqua-FiJter' m Outlet S T 0 l\ W AT 6R TRf A T M E I 4 T S O L U T I O N S u

Aqua-Filter™ Stormwater Filtration Systems The Aqua-Filter™ Stormwater Filtration System is designed for sites that require advanced treatment of runoff stormwater that may discharge into sensitive receiving waters. Each Aqua-Filter™ system I is custom engineered and utilizes a unique approach for pollutant removal. This patented configuration begins with the removal of gross pollutants by the Aqua-Swirl™ Stormwater Treatment System, followed by the removal of fine sediments and waterborne pollutants by the filtration chamber. The Aqua-Filter™ is not only unique because of its modular design, and HDPE construction, but also because of the ease of installation. The system can be designed for new construction projects or be retrofit for existing storm drainage structures. The Aqua-Filter™ system is engineered such that the filtration capacity complies with established "water quality treatment" requirements. This means that the system filters the initial movement of fine sediment pollutants that can be particularly harmful. Performance testing is a normal part of our quality assurance program. Third party testing has demonstrated Total Suspended Solids (TSS) removals of greater than 80% and the effective removal of additional pollutants including hydrocarbons (i.e. light and heavy oils and grease), phosphorus, and various heavy metals (i.e. copper, zinc). See the "Performance and Testing" Section for details.

n System Operation The Aqua-Filter™ Stormwater Filtration System operates under gravitational and hydrodynamic forces with no moving parts or valves, which simplifies the treatment process. The Aqua-Filter™ system also normally operates in an off-line configuration as recommended by the Center for Watershed Protection and most municipalities; fully treating the more frequent 6-month to 1-year design storms (or roughly 90% - 95% of the annual rainfall on a given site). Larger, more intermittent storm events (i.e. 10-year or 25-year) are treated in the AquaSwirl™, and the peak over-flow is permitted to partially bypass the filter media internally beneath the filter bed, avoiding the need for external diversion chambers. The unique Aqua-Filter™ treatment method is illustrated in the drawing shown below and described in the following steps. Aqua-Filter -•M % it-- m Outlet !T • > STORMWATER TREATMENT SOLUTIONS

Step 1: Pretreatment Peripheral pre-treatment of stormwater is not necessary when using the AquaFilter™ Stormwater Filtration System. In fact, each Aqua-Filter™ is custom engineered to utilize a unique treatment sequence where both the coarse- and fine- grained pollutants are removed. ftjf Vltahi* This sequence begins with the AquaSwirl™ Stormwater Treatment System designed to target the removal of TSS Aqua-Swirl™ to be connected to the Aquaand free-floating oil and debris. The Filter™ Stormwater Filtration System addition of the Aqua-Swirl™ allows larger debris to settle before filtration and increases filtration effectiveness Step 2: Filtration 3b The filtration chamber in the Aqua-Filter™ is designed to refine and enhance the stormwater quality prior to discharge Into sensitive receiving waters. The peak filtration flow rate is based on the calculated "water quality treatment" requirements desired for the site. The Sizing Chart provided later in this Section indicates the peak filtration flow rate for the specific Aqua-Filter™ model. Aqua-Filter™ system lowered into place As the pre-treated water enters the filtration chamber, it is evenly distributed across the filter bed and allowed to permeate through the filter media. The filter media are contained in individual sections, which are layered in a pattern to avoid short-circuiting. Aqua-Filter™ Filter Media The natural filter media used for filtration are capable of removing the remaining waterborne pollutants such as oils, grease, fine silts and clays, nutrients (nitrogen, phosphorus), and heavy metals (copper, lead, zinc). The most commonly used media is medium-grained perlite. Other filter media, such as zeolite, granulated activated carbon, leaf compost, and various media blends are available.

lUf HDPE AquaShield™ Products Installation Throughout this section and in our individual product specifications, references will be made to specific ASTM standards for the manufacturing and the installation of the AquaShield™ products. Quality control is a high priority within AquaShield™. That is why all of the patented products are fabricated, inspected and tested before leaving for the job site. The AquaShield™ systems are a modular design and constructed to facilitate the installation process. Because each system is constructed of IHH High-Density Polyethylene (HDPE), even the largest units can be off-loaded and installed without the use of a crane or other special lifting equipment. Lifting cables are provided on each Aqua-Swirl™ and Aqua-Filter™, allowing an excavator or backhoe to maneuver and position the system. Furthermore, the systems can be stored on the job site following off­ loading to accommodate changing schedules. Stub-outs for the inlet and outlet are part of the modular design of the Aqua-Swirl™ and Aqua-Filter™, which allows the contractor to attach the pipes to the Lifting cable for installation inlet and outlet of the Stormwater Treatment System with couplings. Typically, an AquaShield™ representative is present on-site to assist in the installation process. Ml ' ' », Both the Aqua-Swirl™ and the Aqua-Filter™ come with risers and custom manhole frames and covers. Delivery is typically less than four weeks from final approval of shop drawings.