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BaySaver Technologies ● 1030 Deer Hollow Drive ● Mt. Airy, MD 21771
July 11, 2014
Robert E. Cooper, PE
Stormwater BMP Technical Specialist
Virginia Department of Environmental Quality
P.O. Box 1105
Richmond, VA 23218-1105
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
1
Manufactured Treatment Device (MTD) Registration
1. Manufactured Treatment Device Name: BayFilter™ Stormwater Cartridge System
2. Company Name: Baysaver Technologies, LLC
Mailing Address: 1030 Deer Hollow Drive
City: Mount Airy
State: MD Zip: 21771
3. Contact Name (to whom questions should be addressed): Brian Rustia
Mailing Address: 5941 Innisvale Drive
City: Fairfax Station
State: VA Zip: 22039
Phone number: 866-405-9292
Fax number: 866-397-2505
E-mail address: [email protected]
Web address: www.baysaver.com
4. Technology
Specific size/capacity of MTD assessed (include units): Bayfilter system is sized by cubic
feet per second (cfs) or gallons per minute per square foot (gpm/sq ft) of filter area
media. Baysaver has various filter cartridge size configurations (i.e., vertical heights)
2
and flow rates (i.e., gallons per minute – gpm) and is sized depending on the application.
We recommend a maximum loading rate of 0.5 gpm/sq ft for our current filtering devices.
Range of drainage areas served by MTD (acres): Non-Applicable (N/A), Bayfilter
cartridge system is a modular and scalable system sized to treatment cfs entering the
treatment vault/manhole.
Include sizing chart or describe sizing criteria: See above, 0.5 gpm/sq ft of filter media
area is our recommendation for this submittal.
Intended application: on-line or offline: Both, special consideration should be taken for
in-line applications with little to no pretreatment and/or upstream detention components.
Most filtering devices recommend some level of pretreatment to protect premature
fouling of the filtering media by such things as high sediment loads, debris, and
hydrocarbons.
Media used (if applicable): Bayfilter cartridges contain a blend of zeolite, perlite,
activated alumina, and in some cases silca sand depending on the stormwater pollutants
targeted for removal.
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
3
Other (describe):
8. Performance Testing and Certification (check all that apply):
Performance Claim (include removal efficiencies for treated pollutants, flow criteria,
drainage area): 80 % TSS, > 50% TP removal at 0.5 gpm/ sq ft of filtering media. Note: The
test data submitted exceeds these values.
Specific size/Capacity of MTD assessed: 0.5 gpm/sq ft of filtering media
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.
http://www.ecy.wa.gov/programs/wq/stormwater/newtech/technologies.html
Table of Bayfilter Major National Approvals
Agency Level of
award
Protocol Used Date of
Award
Award letter
Maryland
Dept. of
Environment
Stand Alone
Water
Quality Use
TARP
Protocol,
Approved for
TP and TSS
January
2008
See attachment
NJCAT/DEP Interim
Certification
TARP-TSS July 2008 See attachment
WDOE General Use TAPE
Protocol- TSS
Basic
Treatment
August
2011
See WDOE website at:
www.ecy.wa.gov/programs/wq/sto
rmwater/newtech/technologies.ht
ml
WDOE Conditional
Use
TAPE
Protocol-
Enhanced and
TP
December
2014
See WDOE website at:
www.ecy.wa.gov/programs/wq/sto
rmwater/newtech/technologies.ht
ml
WDOE
General Use TAPE Protocol
–TP
Pending *1
(Summary
Data and
Report
provided)
Pending, Report submitted July
2014
*1 Tape Testing at initial site did not have sufficient Phosphorus load for enough
qualifying events (Influent TP between 0.1 mg/l and 0.5 mg/l). Testing was moved to
another site which provided enough qualifying events. This testing yielded TP removal
rates of over 75%.
4
Was an established testing protocol followed? Yes
No
Yes, (1) Provide name of testing protocol followed- TARP and TAPE where applicable
(2) List any protocol deviations: None
Provide the information below and provide a performance report (attach report):
See Attached, Richard Montgomery High School (RMHS) Report.
See Attached, WDOE Interim TER Report
For lab tests: N/A, RMHS report and WDOE study were field tests.
i. Summarize the specific settings for each test run (flow rates, run times, loading
rates) and performance for each run:
ii. If a synthetic sediment product was used, include information about the particle
size distribution of the test material:
iii. If less than full-scale setup was tested, describe the ratio of that tested to the full-
scale MTD:
For field tests:
i. Provide the address, average annual rainfall and characterized rainfall pattern, and
the average annual number of storms for the field-test location: RMHS Testing:
250 Richard Montgomery Dr., Rockville MD 20852. Rainfall depths of the first
20 monitored storm events ranged from 0.24 to 3.04 inches, the site is
representative of rainfall patterns seen in Virginia. WDOE Testing: Two Sites:
Grandview Place Apartments, 19420 Southeast 20th Street in Vancouver,
Washington. Rainfall depths of the qualifying events ranged from 0.20 to 0.39
inches. The Woodinville Sammamish test site is located at/near the intersection of
175th Street and 131st Ave NE. in Woodinville, Washington. Rainfall depths of
the ten qualifying events at Woodinville ranged from 0.20 to 0.94 inches.
ii. 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): RMHS site: 3.62 acres, 83% is impervious, and 17% is vegetated. 100%
of the area is classified as urban, commercial-institutional use. Grandview site:
9.9 acres, but only 1.35 acres of this site drains into the Bayfilter vault and the
area is classified as urban, commercial-institutional use. For the Woodinville
site: the total site is 52 acres and it all drains into the Bayfilter vault, the acreage
is 49 acres is impervious, and 3 acres are considered vegetated. The site is
considered urban, commercial-institutional use.
iii. Describe pretreatment, bypass conditions, or other special circumstances at the
test site: For RMHS: A Bayseparator unit was used for pretreatment, sampling
equipment was located around the Bayfilter to evaluate the performance of the
filter independently. The system was designed to treat the Water Quality volume
and bypass larger events around the Bayfilter system. For Grandview: no device
5
was used for pretreatment, sampling equipment was located around the Bayfilter
to evaluate the performance of the filter independently. The system was designed
to treat the Water Quality volume and bypass larger events around the Bayfilter
system. For Woodinville: A 5K Bayseparator unit was used for pretreatment,
sampling equipment was located around the Bayfilter to evaluate the performance
of the filter independently. The system was designed to treat the Water Quality
volume and bypass larger events around the Bayfilter system.
iv. Provide the number of storms monitored and describe the monitored storm events
(amount of precipitation, duration, etc.): For RMHS: 20 storm events qualified,
See Table 6-1 on page 20 of the report for more detailed precipitation/duration
data. For Grandview 8 storm events qualified, and for Woodinville 10 storm
events qualified, see the TER report for more detailed information on
precipitation and duration.
v. Describe whether or not monitoring examined seasonal variation in MTD
performance: No seasonal variation observed for either testing location (MD or
WA).
vi. If particle size distribution was determined for monitored runoff and/or sediment
collected by the MTD, provide this information: For RMHS: PSD was conducted
four times during the study, See Discussion on Page 29 and 30 along with
information on Figure 6-1 and Table 6-10. For Grandview and Woodinville, PSD
information is detailed in Tables 27 and 28 of the report.
9. MTD History:
How long has this specific model/design been on the market? 8 years (2006)
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:
- Potomac Yard, Alexandria, VA- City of Alexandria;
- Fordson Place, Alexandria- Fairfax County;
- Fort Lee Army Base, Hanover, VA- Prince George County
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:
- Harmony Place, Bowie Maryland, Prince Georges’ County;
- Paint Branch High School, Burtonsville, Maryland, Montgomery County;
- Woodinville, Washington State DOE.
10. Maintenance:
6
What is the generic inspection and maintenance plan/procedure? (attach necessary
documents): Immediately after installation and construction closeout, followed by 6
months after initial installation, and then followed by annual inspections. See
attachment.
Is there a maintenance track record/history that can be documented?
No, no track record.
Yes, track record exists; (provide maintenance track record, location, and sizing of
three to five MTDs installed in Virginia [preferred] or elsewhere):
- Archstone 12, Rockville, Maryland; Last Maintained: May,2013, System Installed
October, 2008
- Richard Montgomery High School, Montgomery County, Maryland; Last Maintained
June 2013; System Installed December 2008.
- Trinity Church, William Street, Fredericksburg, VA; Last Maintained April 2010,
Mini Filter Drain Down Modules changed out (not filters), System Installed June
2009
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 on the Bayfilter cartridge is site dependent, as different sites produce
different pollutant volumes and types. A recent evaluation by AAA Stormwater
Management Facilities Repair Group has produced an estimate of an average of 4 to 5
year life. BaySaver recommends assuming an average maintenance interval of between
3-5 years from a moderate to light anticipated pollutant load respectively.
Total life expectancy of MTD when properly operated in Virginia and, if relevant, life
expectancy of media:
One hundred plus (100+) years, or the life of the concrete structure. BayFilter systems
are always restored to an “as new” condition when fully maintained and cartridges are
replaced. The cartridges are exchanged and the vault fully cleaned at each
maintenance, this is important because many filtration practices collect pollutants deep
in the media, but do not change the entire media layer at maintenance, unless this “less
than as new” maintenance procedure is tested there can be no assurance that the device
continues to operate at design efficiencies after this type of maintenance.
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?
This is non-applicable for Bayfilter cartridges, no breakthrough can occur, and the
system is maintained to “as new” condition with each maintenance operation. The
7
BayFilter cartridges will stop flowing / filtering when total maintenance has been
disregarded and effluent flow rate falls off rapidly. This prevents release of pollutants
due to pipe-lining or media breakthrough, and provides a clear indicator that the
cartridges must be exchanged.
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)?
As the BayFilter matures, the efficiency increases slightly, which is a clear indicator that
breakthrough does not occur. Other than testing over a one year period, there has been
no longer term testing of the BayFilters TP removal, ionic exchange capacity.
Considering that the TP removal data increases over time (longer use) there is no
indication that the ionic capacity is a limiting factor. Extreme loads of dissolved TP,
that would not be expected in stormwater may cause the media to reach ionic saturation,
however since this level of loads are extraordinary and unexpected in normal conditions
no further ionic capacity testing has been performed.
Is the maintenance procedure and/or are materials/components proprietary?
Yes, proprietary
No, not proprietary, filters can be changed by anyone
Maintenance complexity (check all that apply):
Confined space training may be required for maintenance of some systems
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 Bayfilter technology has been submitted nationally for use as an advanced
stormwater device. New Jersey, Washington, and Maryland are the major states we have
sought approval for use. Currently, we are in the final stage of achieving our General
Use Level Designation (GULD) Phosphorus, Enchanced (Metals), and O&G for the
Bayfilter in Washington State using the TAPE protocol. We have included the final
report of the Phosphorus Data for this Virginia submittal.
We have not met the TARP threshold of enough qualifying storms with sufficient
Dissolved Copper loads to meet the WDOE Enhanced treatment levels (Dissolved Zinc
has been met). With the Pacific Northwest is now in its “Dry Season” and more
qualifying storms are unlikely until late September 2014. BaySaver has submitted to
Washington State Department of Ecology (WDOE) the Technical Evaluation Report
(TER) for a GULD approval for TP as well as Oils and Grease as the TAPE Testing
exceeds those performance thresholds.
8
If Virginia is going to accept TP data from any source other than WDOE, we believe that
this report should be considered as evidence that the BayFilter exceeds the requirements
for obtaining the interim 50% TP removal rating.
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.
B A Y S A V E R T E C H N O L O G I E S , I N C .
22
Maintenance of the BayFilter™ System The BayFilter™ system requires periodic maintenance to continue operating at the design efficiency. The maintenance process comprises the removal and replacement of each BayFilter™ cartridge and drain down module and the cleaning of the vault or manhole with a vacuum truck. BayFilter™ maintenance should be performed by a BaySaver Technologies, Inc. certified maintenance contractor.
The maintenance cycle of the BayFilter™ system will be driven mostly by the actual solids load on the filter. The system should be periodically monitored to be certain it is operating correctly. Since stormwater solids loads can be variable, it is possible that the maintenance cycle could be more or less than the projected duration.
The BayFilter systems in New Development applications are designed to treat the WQv in 24 hours initially. Later in the cycle these cartridges will flow at a slower rate, and when the WQv does not drain down within +/- 40 hours after the storm event, the system must be maintained.
When a BayFilter™ system is first installed, it is recommended that it be inspected every six (6) months. When the filter system exhibits flows below design levels the system should be maintained. Filter cartridge replacement should also be considered when sediment levels are at or above the level of the 4 inch manifold system. Please contact the BaySaver Technologies Inc. Engineering Department for maintenance cycle estimations or assistance at 1.800.229.7283.
Chapter
4
B A Y S A V E R T E C H N O L O G I E S , I N C .
23
Maintenance Procedures
1. Remove the manhole covers and open all access hatches.
2. Before entering the system make sure the air is safe per OSHA Standards or use a breathing apparatus. Use low O2, high CO, or other applicable warning devices per regulatory requirements.
3. Using a vacuum truck remove any liquid and sediments that can be removed prior to entry.
4. Using a small lift or the boom of the vacuum truck, remove the used cartridges by lifting them out.
5. Any cartridges that cannot be readily lifted directly out of the vault should be removed from their location and carried to the lifting point using the Trolley system installed in the Vault (if applicable).
6. When all cartridges and drain down modules are removed, remove the balance of the solids and water; then loosen the stainless clamps on the Fernco couplings in the pipe manifold; remove the drain pipes as well. Carefully cap the manifold and the Fernco’s and rinse the floor removing the balance of the collected solids.
7. Clean the manifold pipes, inspect, and reinstall.
8. Install the exchange cartridges and close all covers.
9. The used cartridges must be sent back to BaySaver Technologies, Inc. for exchange/recycling and credit on undamaged units.