robert e. cooper, pe - at virginia tech since 1965 1.pdf · baysaver technologies 1030 deer hollow...

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

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: 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): 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 1.1 8.5

1K 2.4 10

3K 7.8 30

5K 11.1 50

10K 21.8 100

XK Custom Custom

2

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).

3

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

Department of

Environment

Pretreatment

Unit

TARP-TSS May 2000 See attachment

NJCAT/DEP Interim

Certification

TARP-TSS December

2004

See attachment

WDOE Conditional

Use

TAPE- TSS

Pretreatment

April 2011 See WDOE website at:

www.ecy.wa.gov/programs/w

q/stormwater/newtech/technol

ogies.html

WDOE General Use

(report

submitted)

TAPE- TSS TER Report

Attached

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.

4

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 1000 500 5%

Medium Sand 500 250 5%

Fine Sand 250 100 30%

Very Fine

Sand 100 50 15%

Silt (50-8) 50 8 25%

Silt (8-2) 8 2 15%

Clay (1-2) 2 1 5%

iii. If less than full-scale setup was tested, describe the ratio of that tested to the full-

scale 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

175th Street and 131

st Ave NE. in Woodinville, Washington. Ten (10) events were

monitored between November 2013 and May 2014. Average Annual runoff is

approximately 35”, with the majority occurring during primarily the “wet

season” between October and May of each year.

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): The site has a 52 Acre drainage area to it, with approximately 49 acres

of impervious area and 3 acres of vegetative cover.

iii. 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.

iv. 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

5

(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 D50 of around 50 micons with the D10 and D90’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.

6

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 2-16-2013, Previous maintenance 12-15-2010

- Clyde's Restaurant Tower Oak Lodge, Preserve Parkway, Rockville, MD 20852

Last Maintained 05/05/2014, Previous maintenance 5/20/2013

- St. Anne's Espiscopal Church, 25100 Ridge Road, Damascus, MD 20872


- Capitol Drywall, 7871 Beechcraft Avenue, Gaithersburg, MD 20879

Last Maintained 03/31/2014, previous maintenance 04/08/2013

- City of Rockville Public Works Base, East Gude Drive, Rockville, MD


- Draiman Properties, 130 Rollins Avenue , Rockville, MD 20852


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

7

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.

Created by trial version, http://www.8848soft.com

- 1 -

Conditional Interim Certification Findings

NJDEP Technology Certification Program:

Bureau of Sustainable Communities & Innovative TechnologiesDivision of Science, Research & Technology401 E State Street, P.O. Box 409Trenton, NJ 08625(609) 292-9692

Manufactured Treatment Device:

BaySaver Separation System

Applicant Information:

BaySaver Technologies, Inc.1302 Rising Ridge RoadUnit 1Mount Airy, MD 21771800-229-7283

Technology Description:

A description of the BaySaver Separation System is reproduced from the New JerseyCorporation for Advanced Technology (NJCAT) verification report as follows:

The BaySaver system is hydraulically designed to use gravitationalseparation as a means of capturing sediments, and free floating oils, trash,and debris. The dual settling chambers and the internal flow splitter act intandem to provide different levels of treatment for different runoffintensities. Coarse sediments are removed in the first structure, and finersediments and floating pollutants are removed and trapped in the second.This is the case during the periods of low flow that comprise the majorityof storm events.During more intense storms, water is pushed up the T-pipes from belowthe surface in the first manhole. This water is free of floatable pollutantsand large suspended sediments. At moderate flow rates, the T-pipesconvey water from the center of the first manhole and discharge it directlydownstream. Operating in conjunction with the T-pipes, influent water isdiverted into the second manhole by the surface skimming trapezoidalweir. In this manner, the BaySaver Separation System continues to removefine sediments and floatable pollutants in the second manhole as flow ratesincrease throughout the system.The BaySaver Separator Unit includes an internal bypass that conveyshigh energy flows directly downstream. Bypass mode is effective when

- 2 -

the flow rates begin approaching the peak design flow. By bypassingextreme flows, the BaySaver Separator Unit prevents the re-suspensionand discharge of the pollutants that are already trapped within the system.

The BaySaver Separation System is a versatile and flexible BMP devicethat can be retrofitted into existing storm drains or incorporated into newand existing developments. These systems can be used to improve thequality of stormwater runoff from high traffic areas, to contain potentialoil spills, as a pretreatment step in a treatment train, and for otherapplications.

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 NJDEPtreatment efficiency calculation methodology) for laboratorysimulated stormwater runoff with an average influent concentrationof 205 mg/L and an average d50 particle size of 85 microns. SSCremoval testing was conducted with sediment pre-loaded in the lowerchamber to 50% sediment capacity for the 1K unit.

Technology Limitations/Concerns:

Since the overall efficiency removal was only demonstrated at 51%, the NJDEP feelsthat a design safety factor is required, which is addressed in the certification sectionbelow.

Lack of maintenance may cause the system to operate at a reduced efficiency andeventually fill with sediment. Therefore, inspections of accumulated pollutants shouldbe performed as recommended by the manufacturer. Inspections would need to beconducted more frequently in the winter where sanding operations may lead to rapidaccumulations.

- 3 -

BaySaverModel

MaximumTreatment

Flow(cfs)

Peak DesignFlow(cfs)

BaySaverManhole

Depth(feet)

BaySaverUnit

Diameter(feet)

StandardManhole Size

(inches)

New JerseyManhole Size

(inches)

% Increase inSurface Area

½K 0.8 6.8 6 2 48 60 56.31K 1.1 7.5 8 2 48 60 56.33K 3.3 23.1 8 3 60 72 44.05K 6.8 47.3 8 4 72 96 77.810K 12.3 83 8 5 120 144 44.0

Table 1. Design Specifications of Units in New Jersey

- 4 -

NJDEP Conditional Interim Certification:

Based on the demonstrated laboratory performance, NJDEP acknowledges that theBaySaver Separator Model 1K has the capability of achieving in field applications, at aminimum, a TSS removal efficiency of 50%, providing that the manhole diameter isincreased. Therefore, NJDEP certifies that the BaySaver Separator Model 1K iscapable of achieving a TSS removal efficiency of 50% from stormwater runoff at amaximum 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% TSSremoval, the manhole sizes for the various BaySaver Separator models to be used in NewJersey are larger than those specified in the verification report in order to establish asafety factor. In addition, the following conditions shall apply to the conditional interimcertification:

1. The BaySaver Separator Model 1K should be the first component, if used aspart of a treatment train (i.e., utilized in front of best management practices suchas detention, retention, and infiltration basins, etc., as defined in the NJStormwater Best Management Practices Manual).

2. The BaySaver Separator Model 1K shall be designed in accordance with NewJersey’s water quality design storm, as required in the Stormwater ManagementRules (N.J.A.C. 7:8).

3. A Quality Assurance Project Plan supporting the Technology Acceptance andReciprocity Partnership (TARP) Tier II Protocol for Stormwater BestManagement Practice Demonstration (July, 2003), and including any additionalfield testing requirements that the NJDEP shall request, shall be submitted toNJDEP and/or NJCAT within six (6) months from the date of this ConditionalInterim Certification letter.

4. Field evaluation data that are consistent with the Tier II Protocol and anyadditional NJDEP requirements shall be submitted to NJDEP and/or NJCAT byDecember 31, 2006.

5. Additional BaySaver models, as described in Table 1, can be used for therespective designed flow rate since the design of these units is the same as theBaySaver Separator Model 1K.

6. The appropriate devices satisfying site selection and sizing criteria must beconsistent with the specifications as described in Table 1.

BaySaver® Separation System

Maintenance Manual

© 2004 BaySaver Technologies, Inc. www.BaySaver.com

1302 Rising Ridge Rd. Unit 1 • Mount Airy, Maryland 21771 Phone (301) 829-6470 Toll Free 800-229-7283 Fax (301) 829-3747

http://www.baysaver.com/

BaySeparator System Maintenance Manual

1

© Copyright 2013 BaySaver Technologies.

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

Storage manhole Primary manhole


2


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

www.baysaver.com.

Figure 2: Storage manhole with floating debris and oils



3


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 48 1128 / (151) 1.40 / (38) 226 / (30)

48 x 60 1445 / (193) 1.79 / (48) 353 / (47)

48 x 72 1833 / (245) 2.27 / (61) 509 / (68)

1K

48 x 48 1504 / (201) 1.86 / (50) 320 / (43)

48 x 60 1927 / (258) 2.39 / (64) 500 / (67)

48 x 72 2444 / (327) 3.03 / (82) 720 / (96)

3K

60 x 60 2350 / (314) 2.90 / (79) 456 / (61)

60 x 72 2867 / (383) 3.55 / (96) 657 / (88)

60 x 84 3478 / (465) 4.30 / (116) 894 / (119)

5K

72 x 72 3384 / (452) 4.19 / (113) 621 / (83)

72 x 84 3995 / (534) 4.93 / (134) 846 / (113)

72 x 96 4700 / (628) 5.82 / (157) 1105 / (148)

84 x 96 5311 / (710) 6.57 / (177) 1105 / (148)

10K

120 x 120 9400 / (1257) 11.64 / (314) 1567 / (209)


4


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

1219.2 x 1219.2 4.27 1.07 0.86

1219.2 x 1524.0 5.47 1.37 1.34

1219.2 x 1828.8 6.94 1.73 1.93

1K

1219.2 x 1219.2 5.69 1.42 1.21

1219.2 x 1524.0 7.29 1.82 1.89

1219.2 x 1828.8 9.23 2.31 2.73

3K

1524.0 x 1524.0 8.90 2.22 1.73

1524.0 x 1828.8 10.85 2.71 2.49

1524.0 x 2133.6 13.17 3.29 3.38

5K

1828.8 x 1828.8 12.81 3.20 2.35

1828.8 x 2133.6 15.12 3.78 3.20

1828.8 x 2438.4 17.78 4.45 4.18

2133.6 x 2438.4 20.10 5.03 4.18

10K

3048.0 x 3048.0 35.57 8.89 5.93


5


Figure 3: Storage manhole containing diesel fuel before pollutant removal:

Figure 4: Primary manhole with BaySaver unit after pollutant removal

T-pipes

Primary manhole

Storage

manhole


6


Maintenance Instructions

Note: 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 1-800-229-7283 or visit Baysaver.com


J F M A M J J A S O N D

A T-pipes Damaged pipeAny part of the pipe that is cracked or

damaged.

Maintenace personel to contact BaySaver

Technologies, Inc.

A Primary manholeCracks in concrete,

debris build up.

Cracks wider than ½ inch or

evidence of soil particles entering

the structure through the cracks,

or maintenance/inspection

personnel determine that the

structure is not structurally

sound.

Repair cracks or replace manhole.

A Secondary manholeCracks in concrete,

debris build up.

Cracks wider than ½ inch or

evidence of soil particles entering

the structure through the cracks,

or maintenance/inspection

personnel determine that the

structure is not structurally

sound.

Repair cracks or replace manhole.

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/BlockageAny part of the shell that is cracked

or damaged.

Maintenace personel to contact BaySaver

Technologies, Inc.

AAccess Cover (MH,

Grate, cleanout)Damage/Blockage

Any damage to manhole cover or

debris clogging grate/cleanout.Replace manhole cover

A Inlet pipe Damage/BlockageAny part of the pipe that is cracked or

damaged.Replace inlet pipe.

Date Inspected*Frequency

Drainage System

FeatureProblem Conditions to Check For Recommended Action

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