Subject: BaySaver Technologies Submittal for Bayseparator and Bayfilter Technologies

Transcription

1 July 11, 2014 Robert E. Cooper, PE Stormwater BMP Technical Specialist Virginia Department of Environmental Quality P.O. Box 1105 Richmond, VA Subject: BaySaver Technologies Submittal for Bayseparator and Bayfilter Technologies Dear Mr. Cooper: Thank you for affording BaySaver Technologies the opportunity to be considered for the Virginia BMP Clearinghouse. Enclosed are the summary documents (Manufactured Treatment Device (MTD) Registration files) and the supporting articles of information on both technologies. We have included our Technology Evaluation Report (TER) for Washington State Department of Ecology, which is under review by Ecology. We will forward you our formal acceptance once we receive notice and are listed on their website with our other Ecology designations. The primary information we have submitted for your analysis for the Bayseparator and the Bayfilter are the NJCAT/DEP testing and the Richard Montgomery High School (RMHS) data packets, respectively. Feel free to contact me and discuss this further. We look forward to being included in the Clearinghouse for both technologies. Sincerely, Brian M. Rustia, PE Eastern District Manager, Bayfilter Technologies, LLC / ADS cc: D. Hurdis, BaySaver/ADS J. Clark, ADS Enclosures BaySaver Technologies 1030 Deer Hollow Drive Mt. Airy, MD 21771

2 Attachment 1 Manufactured Treatment Device (MTD) Registration 1. Manufactured Treatment Device Name: BaySeparator 2. Company Name: BaySaver Technologies LLC Mailing Address: 1030 Deer Hollow Drive City: Mount Airy State: MD Zip: Contact Name (to whom questions should be addressed): Brian Rustia Mailing Address: 5941 Innisvale Drive City: Fairfax Station State: VA Zip: Phone number: Fax number: address: brian.rustia@ads-pipe.com Web address: 4. Technology Specific size/capacity of MTD assessed (include units): BaySeparator device is available in five (5) standard sizes and can be customized to handle larger flows are unique site constraints. BaySeparator Model Maximum Treatment Rate (cfs) Maximum Hydraulic Rate (cfs) ½ K K K K K XK Custom Custom 1

3 Range of drainage areas served by MTD (acres): Sizing of the BaySeparator Unit is dependent on site conditions and flow rates to be treated. Include sizing chart or describe sizing criteria: See above, Rate Based (cfs) Intended application: on-line or offline: Both Media used (if applicable): N/A 5. Warranty Information (describe, or provide web address): All Products manufactured by BaySaver Technologies are warranted for a period of one (1) year to be free of any material and manufacturing defects. This applies only to Separators and Filter Cartridges manufactured by BaySaver Technologies and does not include Precast Concrete Components or other Components not manufactured by BaySaver Technologies. This warranty is limited to providing a replacement unit (the same or equivalent) and does not include any installation or other costs associated with its replacement. This warranty does not extend to product defects or system failures due to improper installation, lack of maintenance, or improper system design. 6. Treatment Type Hydrodynamic Structure Filtering Structure Manufactured Bioretention System Provide Infiltration Rate (in/hr): Other (describe): 7. Water Quality Treatment Mechanisms (check all that apply) Sedimentation/settling Infiltration Filtration (specify filter media) Adsorption/cation exchange Chelating/precipitation Chemical treatment Biological uptake Other (describe): 8. Performance Testing and Certification (check all that apply): Performance Claim (include removal efficiencies for treated pollutants, flow criteria, drainage area): 50% TSS and 20% TP for all BaySeparator Configurations/Models Specific size/capacity of MTD assessed: NJCAT testing for a 1K BaySeparator Unit (laboratory testing), and WDOE TAPE Testing of 5K BaySeparator Unit (field testing). 2

4 Has the MTD been "approved" by an established granting agency, e.g. New Jersey Department of Environmental Protection (NJDEP), Washington State Department of Ecology, etc. No Yes; For each approval, indicate (1) the granting agency, (2) use level if awarded (3) the protocol version under which performance testing occurred (if applicable), and (4) the date of award, and attach award letter. Table of BaySeparator Major National Approvals Agency Level of award Protocol Used Date of Award Award letter Maryland Pretreatment TARP-TSS May 2000 See attachment Department of Environment Unit NJCAT/DEP Interim TARP-TSS December See attachment WDOE WDOE Certification Conditional Use General Use (report submitted) TAPE- TSS Pretreatment TAPE- TSS 2004 April 2011 TER Report Attached See WDOE website at: q/stormwater/newtech/technol ogies.html Pending *1 *1 TAPE Testing for the Bayseparator was done at the Woodinville Site in Washington State. Was an established testing protocol followed? No Yes, (1) Provide name of testing protocol followed, (2) list any protocol deviations: (1) TARP- TSS, and TAPE Protocols Followed, (2) Protocols were followed without deviation Provide the information below and provide a performance report (attach report): For lab tests: i. Summarize the specific settings for each test run (flow rates, run times, loading rates) and performance for each run: A total of 15 test runs including three (3) tests each at a constant flow rate of 25, 50, 75, 100, and 125 percent of the treatment flow rate. These tests were operated with initial sediment loading of 50% of the unit s capture capacity. Particle Size distribution was noted and ranged from 1 to 1,000 micro in size. Influent concentrations ranged from 100mg/l to 300mg/l for the Saint Anthony s Falls Laboratory (SAFL) testing. 3

5 ii. If a synthetic sediment product was used, include information about the particle size distribution of the test material: The testing was performed according to the TARP required PSD equivalent to a silt loam. The PSD is as follows: Micron Size NJDEP Max Min PSD Coarse Sand % Medium Sand % Fine Sand % Very Fine Sand % Silt (50-8) % Silt (8-2) % Clay (1-2) 2 1 5% iii. If less than full-scale setup was tested, describe the ratio of that tested to the fullscale MTD: Full Scale Testing was performed. For field tests: Washington State DOE report i. Provide the address, average annual rainfall and characterized rainfall pattern, and the average annual number of storms for the field-test location: The Field Testing was performed at the Sammamish River outfall project at the intersection of NE 175 th Street and 131 st Ave NE. in Woodinville, Washington. Ten (10) events were monitored between November 2013 and May Average Annual runoff is approximately 35, with the majority occurring during primarily the wet season between October and May of each year. ii. iii. iv. Provide the total contributing drainage area for the test site, percent of impervious area in the drainage area, and percentages of land uses within the drainage area (acres): The site has a 52 Acre drainage area to it, with approximately 49 acres of impervious area and 3 acres of vegetative cover. Describe pretreatment, bypass conditions, or other special circumstances at the test site: This installation is on an outfall collecting this large drainage area, there is no pretreatment prior to the BaySeparator. Provide the number of storms monitored and describe the monitored storm events (amount of precipitation, duration, etc.): This information is contained in the attached TER, and the testing was in accordance with the TAPE Protocols. Ten 4

6 (10) qualifying storms were collected and reported in this study. v. Describe whether or not monitoring examined seasonal variation in MTD performance: The monitoring occurred during the wet season, which would be the season of highest amount of runoff. vi. If particle size distribution was determined for monitored runoff and/or sediment collected by the MTD, provide this information: The PSD was monitored and the particles generally had a D 50 of around 50 micons with the D 10 and D 90 s of around 10 microns and 250 microns respectively. However since the PSD included organic components and organic components are substantially lighter than sediment particles, the PSD of the sediment particles is likely substantially smaller than those reported which include the organic particles. 9. MTD History: How long has this specific model/design been on the market? 17 years List no more than three locations where the assessed model size(s) has/have been installed in Virginia. If applicable, provide permitting authority. If known, provide latitude & longitude: - Navy Cargo Handling P-034 Cheatham Annex (York Co) (2010), Approved by NAVFAC, 1k - Cougar Elementary School, Manassas Park, VA (2008); 1K unit - Lansdowne Town Square, Loudoun County, VA (2006); 1K units. List no more than three locations where the assessed model size(s) has/have been installed outside of Virginia. If applicable, provide permitting authority. If known, provide latitude & longitude: - First Colony, St. Mary's County, MD, 1k - Discount Tire, Lexington, SC, 1k - East Main Bakery, Hartford, CT 1k 10. Maintenance: What is the generic inspection and maintenance plan/procedure? (attach necessary documents): After installation, suggested inspection to occur 6months after install and then on an annual basis. See attached O&M procedures. Is there a maintenance track record/history that can be documented? No, no track record. 5

7 Yes, track record exists; (provide maintenance track record, location, and sizing of three to five MTDs installed in Virginia [preferred] or elsewhere): Maintenance on BaySeparator Units is very easy and done by virtually anyone with a vacuum truck, most often at the direction of the property owner, and quite frequently under maintenance contracts or agreements. - Barret Development, 820 South King street, Leesburg, VA Last Maintained , Previous maintenance Clyde's Restaurant Tower Oak Lodge, Preserve Parkway, Rockville, MD Last Maintained 05/05/2014, Previous maintenance 5/20/ St. Anne's Espiscopal Church, Ridge Road, Damascus, MD Last Maintained 05/28/2014, Previous maintenance 05/01/ Capitol Drywall, 7871 Beechcraft Avenue, Gaithersburg, MD Last Maintained 03/31/2014, previous maintenance 04/08/ City of Rockville Public Works Base, East Gude Drive, Rockville, MD Last Maintained 12/05/2013, Previous maintenance 11/29/ Draiman Properties, 130 Rollins Avenue, Rockville, MD Last Maintained 10/30/2013, Previous maintenance 6/21/2010 Recognizing that maintenance is an integral function of the MTD, provide the following: amount of runoff treated, the water quality of the runoff, and what is the expected maintenance frequency for this MTD in Virginia, per year? Maintenance requirements of the BaySeparators are a direct function of pollutant load in the runoff treated by the device. Typically the BaySeparators are maintained once every 3-5yrs, but more or less frequently dependent upon the loads generated from the specific site. Total life expectancy of MTD when properly operated in Virginia and, if relevant, life expectancy of media: 100+ years when properly maintained and restored to new condition (vacuumed and cleaned primary and secondary structural compartments) For media or amendments functioning based on cation exchange or adsorption, how long will the media last before breakthrough (indicator capacity is nearly reached) occurs? Not applicable for the BaySeparator Unit, as there is no media. For media or amendments functioning based on cation exchange or adsorption, how has the longevity of the media or amendments been quantified prior to breakthrough (attach necessary performance data or documents)? Not applicable for the BaySeparator Unit, as there is no media. Is the maintenance procedure and/or are materials/components proprietary? Yes, proprietary No, not proprietary Maintenance complexity (check all that apply): Confined space training required for maintenance 6

8 Liquid pumping and transportation Specify method: Standard Vactor Truck Solids removal and disposal Specify method: Conventional landfill Other noteworthy maintenance parameter (describe): 11. Comments Include any additional explanations or comments: The BaySeparator collects the fine sediments and floatable pollutants including trash and debris offline, thereby preventing resuspension of collected pollutants. In addition, with full visibility and access to all pollutants from the surface during maintenance, the BaySeparator provides assurances that maintenance is complete and quick. Baysaver Technologies most often offers the BaySeparator in the dual manhole configuration, but can fabricate a single cell version (XK, SV, and FS versions) upon request. 12. Certification Signed by the company president or responsible officer of the organization: I certify that all information submitted is to the best of my knowledge and belief true, accurate, and complete. Signature: Name: Brian Rustia Title: Eastern Division Manager Date: July 10, 2014 NOTE: All information submitted to the department will be made publically accessible to all interested parties. This MTD registration form will be posted on the Virginia Stormwater BMP Clearinghouse website. 7

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19 Conditional Interim Certification Findings NJDEP Technology Certification Program: Bureau of Sustainable Communities & Innovative Technologies Division of Science, Research & Technology 401 E State Street, P.O. Box 409 Trenton, NJ (609) Manufactured Treatment Device: BaySaver Separation System Applicant Information: BaySaver Technologies, Inc Rising Ridge Road Unit 1 Mount Airy, MD Technology Description: A description of the BaySaver Separation System is reproduced from the New Jersey Corporation for Advanced Technology (NJCAT) verification report as follows: The BaySaver system is hydraulically designed to use gravitational separation as a means of capturing sediments, and free floating oils, trash, and debris. The dual settling chambers and the internal flow splitter act in tandem to provide different levels of treatment for different runoff intensities. Coarse sediments are removed in the first structure, and finer sediments and floating pollutants are removed and trapped in the second. This is the case during the periods of low flow that comprise the majority of storm events. During more intense storms, water is pushed up the T-pipes from below the surface in the first manhole. This water is free of floatable pollutants and large suspended sediments. At moderate flow rates, the T-pipes convey water from the center of the first manhole and discharge it directly downstream. Operating in conjunction with the T-pipes, influent water is diverted into the second manhole by the surface skimming trapezoidal weir. In this manner, the BaySaver Separation System continues to remove fine sediments and floatable pollutants in the second manhole as flow rates increase throughout the system. The BaySaver Separator Unit includes an internal bypass that conveys high energy flows directly downstream. Bypass mode is effective when - 1 -

20 the flow rates begin approaching the peak design flow. By bypassing extreme flows, the BaySaver Separator Unit prevents the re-suspension and discharge of the pollutants that are already trapped within the system. The BaySaver Separation System is a versatile and flexible BMP device that can be retrofitted into existing storm drains or incorporated into new and existing developments. These systems can be used to improve the quality of stormwater runoff from high traffic areas, to contain potential oil spills, as a pretreatment step in a treatment train, and for other applications. Figure 1. BaySaver Separation System New Jersey Corporation for Advanced Technology Verified Claim: The BaySaver Separator Model 1K provides 51% Suspended- Sediment Concentration (SSC) removal efficiency (as per NJDEP treatment efficiency calculation methodology) for laboratory simulated stormwater runoff with an average influent concentration of 205 mg/l and an average d 50 particle size of 85 microns. SSC removal testing was conducted with sediment pre-loaded in the lower chamber to 50% sediment capacity for the 1K unit. Technology Limitations/Concerns: Since the overall efficiency removal was only demonstrated at 51%, the NJDEP feels that a design safety factor is required, which is addressed in the certification section below. Lack of maintenance may cause the system to operate at a reduced efficiency and eventually fill with sediment. Therefore, inspections of accumulated pollutants should be performed as recommended by the manufacturer. Inspections would need to be conducted more frequently in the winter where sanding operations may lead to rapid accumulations

21 BaySaver Model Maximum Treatment Flow (cfs) Peak Design Flow (cfs) BaySaver Manhole Depth (feet) BaySaver Unit Diameter (feet) Standard Manhole Size (inches) New Jersey Manhole Size (inches) % Increase in Surface Area ½K K K K K Table 1. Design Specifications of Units in New Jersey - 3 -

22 NJDEP Conditional Interim Certification: Based on the demonstrated laboratory performance, NJDEP acknowledges that the BaySaver Separator Model 1K has the capability of achieving in field applications, at a minimum, a TSS removal efficiency of 50%, providing that the manhole diameter is increased. Therefore, NJDEP certifies that the BaySaver Separator Model 1K is capable of achieving a TSS removal efficiency of 50% from stormwater runoff at a maximum designed flow rate of 1.1 cfs with a manhole size diameter of 60 inches, and shall be permitted accordingly. Since this technology was verified for 51% TSS removal, the manhole sizes for the various BaySaver Separator models to be used in New Jersey are larger than those specified in the verification report in order to establish a safety factor. In addition, the following conditions shall apply to the conditional interim certification: 1. The BaySaver Separator Model 1K should be the first component, if used as part of a treatment train (i.e., utilized in front of best management practices such as detention, retention, and infiltration basins, etc., as defined in the NJ Stormwater Best Management Practices Manual). 2. The BaySaver Separator Model 1K shall be designed in accordance with New Jersey s water quality design storm, as required in the Stormwater Management Rules (N.J.A.C. 7:8). 3. A Quality Assurance Project Plan supporting the Technology Acceptance and Reciprocity Partnership (TARP) Tier II Protocol for Stormwater Best Management Practice Demonstration (July, 2003), and including any additional field testing requirements that the NJDEP shall request, shall be submitted to NJDEP and/or NJCAT within six (6) months from the date of this Conditional Interim Certification letter. 4. Field evaluation data that are consistent with the Tier II Protocol and any additional NJDEP requirements shall be submitted to NJDEP and/or NJCAT by December 31, Additional BaySaver models, as described in Table 1, can be used for the respective designed flow rate since the design of these units is the same as the BaySaver Separator Model 1K. 6. The appropriate devices satisfying site selection and sizing criteria must be consistent with the specifications as described in Table

23 BaySaver Separation System Maintenance Manual 2004 BaySaver Technologies, Inc Rising Ridge Rd. Unit 1 Mount Airy, Maryland Phone (301) Toll Free Fax (301)

24 BaySeparator System Maintenance Manual One of the advantages of the BaySaver Separation Systems is the ease of maintenance. Like any system that collects pollutants, the BaySaver Separation Systems must be maintained for continued effectiveness. Maintenance is a simple procedure performed using a vacuum truck or similar equipment. The systems were designed to minimize the volume of water removed during routine maintenance, reducing disposal costs. Contractors can access the pollutants stored in the manholes through two 30 manhole covers. This allows them to gain unobstructed access to the bottom of the manholes. There is no confined space entry necessary for inspection or maintenance. Vacuum hoses can reach the entire sump area of both manholes to remove sediments and trash. The entire maintenance procedure typically takes from 2 to 4 hours, depending on the size of the system and the capacity of the vacuum truck. Local regulations may apply to the maintenance procedure. Safe and legal disposal of pollutants is the responsibility of the maintenance contractor. Maintenance should be performed only by a qualified contractor. Inspection and Cleaning Cycle Periodic inspection is needed to determine the need for and frequency of maintenance. You should begin inspecting as soon as construction is complete and thereafter on a quarterly basis. Typically, the system needs to be cleaned every 12 months. The cycle may be less than 12 months if there is a chance that excessive oils, fuels or sediments will accumulate. That is why periodic inspection is important. Figure 1: BaySaver System with stored pollutants in manholes Primary manhole Storage manhole 1 Copyright 2013 BaySaver Technologies.

25 BaySeparator System Maintenance Manual Determining When to Clean The system needs to be cleaned when 2 feet (0.6 meters) of sediment is accumulated at the bottom of either structure or when visual inspection shows a large accumulation of debris or oil. Measuring Sediment Depth You can determine the sediment depth by lowering a pole into the manhole until it hits the sediment and measuring the distance from the bottom of the pole to the water line mark on the pole. If this is less than 6 feet (1.8 meters), the system needs to be cleaned. Summary You can access the pollutants through the 2 manhole covers. You can see the entire floor/sump area of each manhole from the surface. There is no confined space entry for inspection or maintenance. During maintenance, you can transfer water from the primary to the storage manhole, minimizing the amount of water for disposal. Finding Information For the manhole capacities for the BaySaver models, American standards, see page 3. For the manhole capacities for the BaySaver models, metric standards, see page 4. For the maintenance procedure, see page 6. To see an animated maintenance procedure, visit our web site at Figure 2: Storage manhole with floating debris and oils 2 Copyright 2013 BaySaver Technologies.

26 BaySeparator System Maintenance Manual Table 1: BaySaver Separation System Manhole Storage Capacities (American Standards) BaySeparator Manhole Size Total System Capacity Sediment Capacity Floatable Capacity Inches Gallons / (ft³) Yards³/ (ft³) Gallons / (ft³) 1/2 K 48 x / (151) 1.40 / (38) 226 / (30) 48 x / (193) 1.79 / (48) 353 / (47) 48 x / (245) 2.27 / (61) 509 / (68) 1K 48 x / (201) 1.86 / (50) 320 / (43) 48 x / (258) 2.39 / (64) 500 / (67) 48 x / (327) 3.03 / (82) 720 / (96) 3K 60 x / (314) 2.90 / (79) 456 / (61) 60 x / (383) 3.55 / (96) 657 / (88) 60 x / (465) 4.30 / (116) 894 / (119) 5K 72 x / (452) 4.19 / (113) 621 / (83) 72 x / (534) 4.93 / (134) 846 / (113) 72 x / (628) 5.82 / (157) 1105 / (148) 84 x / (710) 6.57 / (177) 1105 / (148) 10K 120 x / (1257) / (314) 1567 / (209) 3 Copyright 2013 BaySaver Technologies.

27 BaySeparator System Maintenance Manual Table 2: BaySaver Separation System Manhole Storage Capacities (Metric Standards) BaySaver Separation System Size Total System Capacity Sediment Capacity Floatable Capacity Millimeters (m³) (m³) (m³) 1/2 K x x x x K x x x K x x x x K x x K x Copyright 2013 BaySaver Technologies.

28 BaySeparator System Maintenance Manual Figure 3: Storage manhole containing diesel fuel before pollutant removal: Storage manhole Figure 4: Primary manhole with BaySaver unit after pollutant removal T-pipes Primary manhole 5 Copyright 2013 BaySaver Technologies.

29 Maintenance Instructions Note: BaySeparator System Maintenance Manual For each BaySaver System, there are 2 manholes to clean: the primary manhole and storage manhole. 1. Remove the manhole covers to provide access to the pollutant storage. 2. Storage manhole: Use a vacuum truck or other similar equipment to remove all water, debris, oils and sediment. 3. Storage manhole: Use a high pressure hose to clean the manhole of all the remaining sediment and debris. Then, use the vacuum truck to remove the water. 4. Primary manhole: Use a submersible pump to pump the bulk of the water from the primary manhole into the clean storage manhole: a. Keep the pump intake below the water surface. b. Stop pumping when the water surface is one (1) foot above the accumulated sediments. 5. Primary manhole: Use a vacuum truck or other similar equipment to remove all water, debris, oils and sediment. 6. Primary manhole: Use a high pressure hose to clean the manhole of all the remaining sediment and debris. Then, use the vacuum truck to remove the water. 7. Primary manhole: Fill the cleaned primary manhole with water until you have a depth of 8 feet (or 2.44 meters). 8. Storage manhole: Top off the storage manhole with water until you have a depth of 8 feet (or 2.44 meters). 9. Replace the two manhole covers. 10. Dispose of the polluted water, oils, sediment and trash at an approved facility. Local regulations prohibit the discharge of solid material into the sanitary system. Check with the local sewer authority for authority to discharge the liquid. Many places treat the pollutants as leachate. Check with local regulators about disposal requirements. Important: Additional local regulations may apply to the maintenance procedure. Figure 5: Vacuum truck and high pressure hose How can you tell the primary from the storage manhole? The primary manhole has the BaySaver unit with the T-pipes (see Figure 4). The other manhole is the storage manhole (see Figure 3). If you need further assistance or have any questions, please call or visit Baysaver.com 6 Copyright 2013 BaySaver Technologies.

30 Frequency Drainage System Feature Problem Conditions to Check For Recommended Action Date Inspected* J F M A M J J A S O N D A T-pipes Damaged pipe Any part of the pipe that is cracked or damaged. Maintenace personel to contact BaySaver Technologies, Inc. A Primary manhole Cracks in concrete, debris build up. Cracks wider than ½ inch or evidence of soil particles entering the structure through the cracks, or maintenance/inspection Repair cracks or replace manhole. personnel determine that the structure is not structurally sound. A Secondary manhole Cracks in concrete, debris build up. Cracks wider than ½ inch or evidence of soil particles entering the structure through the cracks, or maintenance/inspection Repair cracks or replace manhole. personnel determine that the structure is not structurally sound. A Bypass plate Blockage/Damage Excessive debris degrading bypass flow, cracks in bypass plate and damaged welding. Clear bypass plate of debris and check for damage. If damage is accessive maintenance personel to contact BaySaver Technologies, Inc. A Separator shell Damage/Blockage Any part of the shell that is cracked or damaged. Maintenace personel to contact BaySaver Technologies, Inc. A Access Cover (MH, Grate, cleanout) Damage/Blockage Any damage to manhole cover or debris clogging grate/cleanout. Replace manhole cover A Inlet pipe Damage/Blockage Any part of the pipe that is cracked or damaged. Replace inlet pipe.