HomeMy WebLinkAboutGleason Ave/Baxter Ave BMP NOI
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Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands WPA Form 3 – Notice of Intent
Massachusetts Wetlands Protection Act M.G.L. c. 131, §40
Provided by MassDEP:
MassDEP File Number
Document Transaction Number
Yarmouth
City/Town
Important: When filling out forms on the computer, use only the tab key to move your cursor - do not use the return key.
Note: Before completing this form consult your local Conservation Commission regarding any municipal bylaw or ordinance.
A. General Information
1. Project Location (Note: electronic filers will click on button to locate project site):
Gleason Avenue
a. Street Address
Yarmouth
b. City/Town
02673
c. Zip Code
Latitude and Longitude: 41.6526
d. Latitude
-70.2616
e. Longitude
29
f. Assessors Map/Plat Number
57
g. Parcel /Lot Number
2. Applicant:
Jeff
a. First Name
Colby
b. Last Name
Town of Yarmouth DPW
c. Organization
99 Buck Island Road
d. Street Address
West Yarmouth
e. City/Town
MA
f. State
02673
g. Zip Code
508-398-2231
h. Phone Number
N/A
i. Fax Number
jcolby@yarmouth.ma.us
j. Email Address
3. Property owner (required if different from applicant): Check if more than one owner
a. First Name
b. Last Name
Town of Yarmouth
c. Organization
1146 Route 28
d. Street Address
South Yarmouth
e. City/Town
MA
f. State
02664
g. Zip Code
h. Phone Number
i. Fax Number
j. Email address
4. Representative (if any):
Nick
a. First Name
Cristofori
b. Last Name
Comprehensive Environmental, Inc.
c. Company
225 Cedar Hill Street
d. Street Address
Marlborough
e. City/Town
Massachusetts
f. State
01752
g. Zip Code
800-725-2550
h. Phone Number
i. Fax Number
ncristofori@ceiengineers.com
j. Email address
5. Total WPA Fee Paid (from NOI Wetland Fee Transmittal Form):
N/A
a. Total Fee Paid
N/A
b. State Fee Paid
N/A
c. City/Town Fee Paid
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Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands WPA Form 3 – Notice of Intent
Massachusetts Wetlands Protection Act M.G.L. c. 131, §40
Provided by MassDEP:
MassDEP File Number
Document Transaction Number
Yarmouth
City/Town
A. General Information (continued)
6. General Project Description:
This project will entail the construction of a stormwater BMP (hybrid gravel wetland/bioretention area)
designed to remove bacteria and nitrogen loads from stormwater runoff associated with roadways and impervious area within buffer zone of a wetland resource area.
7a. Project Type Checklist: (Limited Project Types see Section A. 7b.)
1. Single Family Home 2. Residential Subdivision
3. Commercial/Industrial 4. Dock/Pier
5. Utilities 6. Coastal engineering Structure
7. Agriculture (e.g., cranberries, forestry) 8. Transportation
9. Other
7b. Is any portion of the proposed activity eligible to be treated as a limited project (including Ecological Restoration Limited Project) subject to 310 CMR 10.24 (coastal) or 310 CMR 10.53 (inland)?
1. Yes No If yes, describe which limited project applies to this project. (See 310 CMR 10.24 and 10.53 for a complete list and description of limited project types)
2. Limited Project Type
If the proposed activity is eligible to be treated as an Ecological Restoration Limited Project (310 CMR10.24(8), 310 CMR 10.53(4)), complete and attach Appendix A: Ecological Restoration Limited Project Checklist and Signed Certification.
8. Property recorded at the Registry of Deeds for:
a. County
b. Certificate # (if registered land)
c. Book
d. Page Number
B. Buffer Zone & Resource Area Impacts (temporary & permanent)
1. Buffer Zone Only – Check if the project is located only in the Buffer Zone of a Bordering
Vegetated Wetland, Inland Bank, or Coastal Resource Area.
2. Inland Resource Areas (see 310 CMR 10.54-10.58; if not applicable, go to Section B.3,
Coastal Resource Areas).
Check all that apply below. Attach narrative and any supporting documentation describing how the project will meet all performance standards for each of the resource areas altered, including standards requiring consideration of alternative project design or location.
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Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands WPA Form 3 – Notice of Intent
Massachusetts Wetlands Protection Act M.G.L. c. 131, §40
Provided by MassDEP:
MassDEP File Number
Document Transaction Number
Yarmouth
City/Town
B. Buffer Zone & Resource Area Impacts (temporary & permanent) (cont’d)
For all projects affecting other Resource Areas, please attach a narrative explaining how the resource area was delineated.
Resource Area Size of Proposed Alteration Proposed Replacement (if any)
a. Bank
1. linear feet
2. linear feet
b. Bordering Vegetated Wetland
1. square feet
2. square feet
c. Land Under Waterbodies and Waterways
1. square feet
2. square feet
3. cubic yards dredged
Resource Area Size of Proposed Alteration Proposed Replacement (if any)
d. Bordering Land Subject to Flooding
1. square feet
2. square feet
3. cubic feet of flood storage lost
4. cubic feet replaced
e. Isolated Land Subject to Flooding
1. square feet
2. cubic feet of flood storage lost
3. cubic feet replaced
f. Riverfront Area
1. Name of Waterway (if available) - specify coastal or inland
2. Width of Riverfront Area (check one):
25 ft. - Designated Densely Developed Areas only 100 ft. - New agricultural projects only 200 ft. - All other projects
3. Total area of Riverfront Area on the site of the proposed project:
square feet
4. Proposed alteration of the Riverfront Area:
a. total square feet
b. square feet within 100 ft.
c. square feet between 100 ft. and 200 ft.
5. Has an alternatives analysis been done and is it attached to this NOI? Yes No
6. Was the lot where the activity is proposed created prior to August 1, 1996? Yes No
3. Coastal Resource Areas: (See 310 CMR 10.25-10.35)
Note: for coastal riverfront areas, please complete Section B.2.f. above.
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Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands WPA Form 3 – Notice of Intent
Massachusetts Wetlands Protection Act M.G.L. c. 131, §40
Provided by MassDEP:
MassDEP File Number
Document Transaction Number
Yarmouth
City/Town
B. Buffer Zone & Resource Area Impacts (temporary & permanent) (cont’d)
Check all that apply below. Attach narrative and supporting documentation describing how the project will meet all performance standards for each of the resource areas altered, including standards requiring consideration of alternative project design or location.
Online Users: Include your document transaction number (provided on your receipt page) with all supplementary information you submit to the Department.
Resource Area Size of Proposed Alteration Proposed Replacement (if any)
a. Designated Port Areas Indicate size under Land Under the Ocean, below
b. Land Under the Ocean
1. square feet
2. cubic yards dredged
c. Barrier Beach Indicate size under Coastal Beaches and/or Coastal Dunes below
d. Coastal Beaches
1. square feet
2. cubic yards beach nourishment
e. Coastal Dunes
1. square feet
2. cubic yards dune nourishment
Size of Proposed Alteration Proposed Replacement (if any)
f. Coastal Banks
1. linear feet
g. Rocky Intertidal Shores
1. square feet
h. Salt Marshes
1. square feet
2. sq ft restoration, rehab., creation
i. Land Under Salt Ponds
1. square feet
2. cubic yards dredged
j. Land Containing Shellfish
1. square feet
k. Fish Runs Indicate size under Coastal Banks, inland Bank, Land Under the Ocean, and/or inland Land Under Waterbodies and Waterways, above
1. cubic yards dredged
l. Land Subject to Coastal Storm Flowage
1. square feet
4. Restoration/Enhancement If the project is for the purpose of restoring or enhancing a wetland resource area in addition to the square footage that has been entered in Section B.2.b or B.3.h above, please enter the additional amount here.
a. square feet of BVW
b. square feet of Salt Marsh
5. Project Involves Stream Crossings
a. number of new stream crossings
b. number of replacement stream crossings
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Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands WPA Form 3 – Notice of Intent
Massachusetts Wetlands Protection Act M.G.L. c. 131, §40
Provided by MassDEP:
MassDEP File Number
Document Transaction Number
Yarmouth
City/Town
C. Other Applicable Standards and Requirements
This is a proposal for an Ecological Restoration Limited Project. Skip Section C and
complete Appendix A: Ecological Restoration Limited Project Checklists – Required Actions (310 CMR 10.11).
Streamlined Massachusetts Endangered Species Act/Wetlands Protection Act Review
1. Is any portion of the proposed project located in Estimated Habitat of Rare Wildlife as indicated on the most recent Estimated Habitat Map of State-Listed Rare Wetland Wildlife published by the Natural Heritage and Endangered Species Program (NHESP)? To view habitat maps, see the Massachusetts Natural Heritage Atlas or go to http://maps.massgis.state.ma.us/PRI_EST_HAB/viewer.htm.
a. Yes No If yes, include proof of mailing or hand delivery of NOI to:
Natural Heritage and Endangered Species Program Division of Fisheries and Wildlife 1 Rabbit Hill Road Westborough, MA 01581
8/1/2017
b. Date of map
If yes, the project is also subject to Massachusetts Endangered Species Act (MESA) review (321 CMR 10.18). To qualify for a streamlined, 30-day, MESA/Wetlands Protection Act review, please complete Section C.1.c, and include requested materials with this Notice of Intent (NOI); OR complete Section C.2.f, if applicable. If MESA supplemental information is not included with the NOI, by completing Section 1 of this form, the NHESP will require a separate MESA filing which may take
up to 90 days to review (unless noted exceptions in Section 2 apply, see below).
c. Submit Supplemental Information for Endangered Species Review∗
1. Percentage/acreage of property to be altered:
(a) within wetland Resource Area
percentage/acreage
(b) outside Resource Area
percentage/acreage
2. Assessor’s Map or right-of-way plan of site
2. Project plans for entire project site, including wetland resource areas and areas outside of wetlands jurisdiction, showing existing and proposed conditions, existing and proposed
tree/vegetation clearing line, and clearly demarcated limits of work ∗∗
(a) Project description (including description of impacts outside of wetland resource area & buffer zone)
(b) Photographs representative of the site
∗ Some projects not in Estimated Habitat may be located in Priority Habitat, and require NHESP review (see http://www.mass.gov/eea/agencies/dfg/dfw/natural-heritage/regulatory-review/). Priority Habitat includes habitat for state-listed plants
and strictly upland species not protected by the Wetlands Protection Act.
∗∗ MESA projects may not be segmented (321 CMR 10.16). The applicant must disclose full development plans even if such plans are not required as part of the Notice of Intent process.
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Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands WPA Form 3 – Notice of Intent
Massachusetts Wetlands Protection Act M.G.L. c. 131, §40
Provided by MassDEP:
MassDEP File Number
Document Transaction Number
Yarmouth
City/Town
C. Other Applicable Standards and Requirements (cont’d)
(c) MESA filing fee (fee information available at http://www.mass.gov/dfwele/dfw/nhesp/regulatory_review/mesa/mesa_fee_schedule.htm). Make check payable to “Commonwealth of Massachusetts - NHESP” and mail to NHESP at
above address
Projects altering 10 or more acres of land, also submit:
(d) Vegetation cover type map of site
(e) Project plans showing Priority & Estimated Habitat boundaries
(f) OR Check One of the Following
1. Project is exempt from MESA review. Attach applicant letter indicating which MESA exemption applies. (See 321 CMR 10.14, http://www.mass.gov/dfwele/dfw/nhesp/regulatory_review/mesa/mesa_exemptions.htm; the NOI must still be sent to NHESP if the project is within estimated habitat pursuant to 310 CMR 10.37 and 10.59.)
2. Separate MESA review ongoing.
a. NHESP Tracking #
b. Date submitted to NHESP
3. Separate MESA review completed. Include copy of NHESP “no Take” determination or valid Conservation & Management Permit with approved plan.
3. For coastal projects only, is any portion of the proposed project located below the mean high water line or in a fish run?
a. Not applicable – project is in inland resource area only b. Yes No
If yes, include proof of mailing, hand delivery, or electronic delivery of NOI to either:
South Shore - Cohasset to Rhode Island border, and the Cape & Islands:
Division of Marine Fisheries - Southeast Marine Fisheries Station Attn: Environmental Reviewer 836 South Rodney French Blvd. New Bedford, MA 02744 Email: DMF.EnvReview-South@state.ma.us
North Shore - Hull to New Hampshire border: Division of Marine Fisheries - North Shore Office Attn: Environmental Reviewer 30 Emerson Avenue Gloucester, MA 01930 Email: DMF.EnvReview-North@state.ma.us
Also if yes, the project may require a Chapter 91 license. For coastal towns in the Northeast Region, please contact MassDEP’s Boston Office. For coastal towns in the Southeast Region, please contact MassDEP’s Southeast Regional Office.
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Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands WPA Form 3 – Notice of Intent
Massachusetts Wetlands Protection Act M.G.L. c. 131, §40
Provided by MassDEP:
MassDEP File Number
Document Transaction Number
Yarmouth
City/Town
C. Other Applicable Standards and Requirements (cont’d)
Online Users: Include your document transaction number (provided on your receipt page) with all supplementary information you submit to the Department.
4. Is any portion of the proposed project within an Area of Critical Environmental Concern (ACEC)?
a. Yes No If yes, provide name of ACEC (see instructions to WPA Form 3 or MassDEP Website for ACEC locations). Note: electronic filers click on Website.
b. ACEC
5. Is any portion of the proposed project within an area designated as an Outstanding Resource Water (ORW) as designated in the Massachusetts Surface Water Quality Standards, 314 CMR 4.00?
a. Yes No
6. Is any portion of the site subject to a Wetlands Restriction Order under the Inland Wetlands Restriction Act (M.G.L. c. 131, § 40A) or the Coastal Wetlands Restriction Act (M.G.L. c. 130, § 105)?
a. Yes No
7. Is this project subject to provisions of the MassDEP Stormwater Management Standards?
a. Yes. Attach a copy of the Stormwater Report as required by the Stormwater Management Standards per 310 CMR 10.05(6)(k)-(q) and check if:
1. Applying for Low Impact Development (LID) site design credits (as described in Stormwater Management Handbook Vol. 2, Chapter 3)
2. A portion of the site constitutes redevelopment
3. Proprietary BMPs are included in the Stormwater Management System.
b. No. Check why the project is exempt:
1. Single-family house
2. Emergency road repair
3. Small Residential Subdivision (less than or equal to 4 single-family houses or less than or equal to 4 units in multi-family housing project) with no discharge to Critical Areas.
D. Additional Information
This is a proposal for an Ecological Restoration Limited Project. Skip Section D and complete Appendix A: Ecological Restoration Notice of Intent – Minimum Required Documents (310 CMR 10.12).
Applicants must include the following with this Notice of Intent (NOI). See instructions for details.
Online Users: Attach the document transaction number (provided on your receipt page) for any of the following information you submit to the Department.
1. USGS or other map of the area (along with a narrative description, if necessary) containing sufficient information for the Conservation Commission and the Department to locate the site. (Electronic filers may omit this item.)
2. Plans identifying the location of proposed activities (including activities proposed to serve as a Bordering Vegetated Wetland [BVW] replication area or other mitigating measure) relative to the boundaries of each affected resource area.
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Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands WPA Form 3 – Notice of Intent
Massachusetts Wetlands Protection Act M.G.L. c. 131, §40
Provided by MassDEP:
MassDEP File Number
Document Transaction Number
Yarmouth
City/Town
D. Additional Information (cont’d)
3. Identify the method for BVW and other resource area boundary delineations (MassDEP BVW Field Data Form(s), Determination of Applicability, Order of Resource Area Delineation, etc.), and attach documentation of the methodology.
4. List the titles and dates for all plans and other materials submitted with this NOI.
Gravel Bioretention Cell Stormwater BMP
a. Plan Title
Michael Carmasine
b. Prepared By
Nick Cristofori
c. Signed and Stamped by
April 2018
d. Final Revision Date
As Shown
e. Scale
f. Additional Plan or Document Title
g. Date
5. If there is more than one property owner, please attach a list of these property owners not listed on this form.
6. Attach proof of mailing for Natural Heritage and Endangered Species Program, if needed.
7. Attach proof of mailing for Massachusetts Division of Marine Fisheries, if needed.
8. Attach NOI Wetland Fee Transmittal Form
9. Attach Stormwater Report, if needed.
E. Fees
1. Fee Exempt: No filing fee shall be assessed for projects of any city, town, county, or district
of the Commonwealth, federally recognized Indian tribe housing authority, municipal housing authority, or the Massachusetts Bay Transportation Authority. Applicants must submit the following information (in addition to pages 1 and 2 of the NOI Wetland Fee Transmittal Form) to confirm fee payment:
2. Municipal Check Number
3. Check date
4. State Check Number
5. Check date
6. Payor name on check: First Name
7. Payor name on check: Last Name
noifeetf.doc • Wetland Fee Transmittal Form • rev. 10/11 Page 1 of 2
Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands NOI Wetland Fee Transmittal Form
Massachusetts Wetlands Protection Act M.G.L. c. 131, §40
Important: When filling out forms on the computer, use only the tab key to move your cursor - do not use the return key.
A. Applicant Information
1. Location of Project:
Gleason Avenue
a. Street Address
Yarmouth
b. City/Town
N/A
c. Check number
fee exempt (municipal project)
d. Fee amount
2. Applicant Mailing Address:
Jeff
a. First Name
Colby
b. Last Name
Town of Yarmouth DPW
c. Organization
99 Buck Island Road
d. Mailing Address
West Yarmouth
e. City/Town
MA
f. State
02673
g. Zip Code
508-398-2231
h. Phone Number
i. Fax Number
jcolby@yarmouth.ma.us
j. Email Address
3. Property Owner (if different):
a. First Name
b. Last Name
Town of Yarmouth
c. Organization
1146 Route 28
d. Mailing Address
South Yarmouth
e. City/Town MA
f. State
02664
g. Zip Code
h. Phone Number
i. Fax Number
j. Email Address
To calculate filing fees, refer to the category fee list and examples in the instructions for filling out WPA Form 3 (Notice of Intent).
B. Fees
Fee should be calculated using the following process & worksheet. Please see Instructions before filling out worksheet. Step 1/Type of Activity: Describe each type of activity that will occur in wetland resource area and buffer zone.
Step 2/Number of Activities: Identify the number of each type of activity. Step 3/Individual Activity Fee: Identify each activity fee from the six project categories listed in the instructions. Step 4/Subtotal Activity Fee: Multiply the number of activities (identified in Step 2) times the fee per category (identified in Step 3) to reach a subtotal fee amount. Note: If any of these activities are in a Riverfront Area in addition to another Resource Area or the Buffer Zone, the fee per activity should be multiplied by 1.5 and then added to the subtotal amount. Step 5/Total Project Fee: Determine the total project fee by adding the subtotal amounts from Step 4. Step 6/Fee Payments: To calculate the state share of the fee, divide the total fee in half and subtract $12.50. To calculate the city/town share of the fee, divide the total fee in half and add $12.50.
noifeetf.doc • Wetland Fee Transmittal Form • rev. 10/11 Page 2 of 2
Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands NOI Wetland Fee Transmittal Form
Massachusetts Wetlands Protection Act M.G.L. c. 131, §40
B. Fees (continued)
Step 1/Type of Activity Step 2/Number of Activities Step 3/Individual Activity Fee
Step 4/Subtotal Activity Fee
1/Resource Improvement
1
$0 (exempt)
$0 (exempt)
Step 5/Total Project Fee:
Step 6/Fee Payments:
Total Project Fee: $0 (exempt)
a. Total Fee from Step 5
State share of filing Fee: $0 (exempt)
b. 1/2 Total Fee less $12.50
City/Town share of filling Fee: $0 (exempt)
c. 1/2 Total Fee plus $12.50
C. Submittal Requirements
a.) Complete pages 1 and 2 and send with a check or money order for the state share of the fee, payable to the Commonwealth of Massachusetts. Department of Environmental Protection Box 4062 Boston, MA 02211 b.) To the Conservation Commission: Send the Notice of Intent or Abbreviated Notice of Intent; a copy of this form; and the city/town fee payment. To MassDEP Regional Office (see Instructions): Send a copy of the Notice of Intent or Abbreviated Notice of Intent; a copy of this form; and a copy of the state fee payment. (E-filers of Notices of Intent may submit these electronically.)
Yarmouth Transmittal Form.doc • rev. 12/17 Page 1 of 1
Enter your transmittal number X281860
Transmittal Number
Your unique Transmittal Number can be accessed online: http://www.mass.gov/eea/agencies/massdep/service/approvals/transmittal-form-for-payment.html Massachusetts Department of Environmental Protection Transmittal Form for Permit Application and Payment
1. Please type or print. A separate Transmittal Form must be completed for each permit application. 2. Make your check payable to the Commonwealth of Massachusetts and mail it with a copy of this form to: MassDEP, P.O. Box 4062, Boston, MA 02211. 3. Three copies of this form will be needed. Copy 1 - the original must accompany your permit application. Copy 2 must accompany your fee payment. Copy 3 should be retained for your records 4. Both fee-paying and exempt applicants must mail a copy of this transmittal form to: MassDEP P.O. Box 4062 Boston, MA 02211 * Note: For BWSC Permits, enter the LSP.
A. Permit Information
WPA Form 3
1. Permit Code: 4 to 7 character code from permit instructions
Notice of Intent
2. Name of Permit Category Construction of a Gravel Bioretention Cell Stormwater BMP
3. Type of Project or Activity B. Applicant Information – Firm or Individual
Town of Yarmouth DPW
1. Name of Firm - Or, if party needing this approval is an individual enter name below:
2. Last Name of Individual
3. First Name of Individual
4. MI 99 Buck Island Road
5. Street Address West Yarmouth
6. City/Town
MA
7. State
02673
8. Zip Code
508-398-2231
9. Telephone #
1291
10. Ext. # Jeff Colby
11. Contact Person
jcolby@yarmouth.ma.us
12. e-mail address
C. Facility, Site or Individual Requiring Approval
Gleason Avenue Gravel Bioretention Cell Stormwater BMP
1. Name of Facility, Site Or Individual
Gleason Avenue
2. Street Address Yarmouth
3. City/Town
MA
4. State
02673
5. Zip Code
508-398-2231
6. Telephone #
7. Ext. # N/A
8. DEP Facility Number (if Known)
N/A
9. Federal I.D. Number (if Known)
N/A
10. BWSC Tracking # (if Known) D. Application Prepared by (if different from Section B)* Comprehensive Environmental, Inc.
1. Name of Firm Or Individual 225 Cedar Hill Street
2. Address Marlborough
3. City/Town
MA
4. State
01752
5. Zip Code
800-725-2550
6. Telephone #
7. Ext. # Nick Cristofori
8. Contact Person
N/A
9. LSP Number (BWSC Permits only)
E. Permit - Project Coordination
1. Is this project subject to MEPA review? yes no If yes, enter the project’s EOEA file number - assigned when an Environmental Notification Form is submitted to the MEPA unit:
N/A
EOEA File Number
F. Amount Due
DEP Use Only Special Provisions:
1. Fee Exempt (city, town or municipal housing authority)(state agency if fee is $100 or less).
There are no fee exemptions for BWSC permits, regardless of applicant status. 2. Hardship Request - payment extensions according to 310 CMR 4.04(3)(c). 3. Alternative Schedule Project (according to 310 CMR 4.05 and 4.10). 4. Homeowner (according to 310 CMR 4.02).
Permit No:
Rec’d Date:
Reviewer: N/A
Check Number
N/A
Dollar Amount
N/A
Date
Notice of Intent (NOI)
For
Yarmouth Massachusetts
Gleason Avenue Gravel Bioretention Cell Stormwater
BMP
October 2018
Prepared For: Town of Yarmouth
1146 Route 28
South Yarmouth, Massachusetts 02664
Prepared By: Comprehensive Environmental, Inc. 225 Cedar Hill Street
Marlborough, Massachusetts 01752
Gleason Avenue Gravel Bioretention Cell Stormwater BMP – Yarmouth, MA Notice of Intent Page 2 of 11
NOI Table of Contents
Part A: Transmittal Form – Notice of Intent Part B: NOI Wetland Fee Transmittal Form Part C: WPA Form 3 Part D: Notice of Intent Narrative:
1 Introduction ........................................................................................................................... 3 1.1 Project Description ........................................................................................................... 3 1.2 Project Location & Wetland Conditions .......................................................................... 3 1.3 Project Abutters ................................................................................................................ 3
1.4 Project Background & Existing Conditions ..................................................................... 4
1.5 Project Goals .................................................................................................................... 5 2 Description of Proposed Work ............................................................................................ 5 2.1 Proposed BMP and Functionality .................................................................................... 5 2.2 Alternatives Analysis ....................................................................................................... 7
2.3 Protective Measures ......................................................................................................... 8 2.4 Proposed Construction Sequence ..................................................................................... 8 3 Activities Subject to Regulation ........................................................................................... 9 3.1 Description of Resource Area Impacts............................................................................. 9
4 DEP Stormwater Standards & Report ............................................................................. 10 List of Tables
Table 1. Property Owners Abutting Project Area ........................................................................... 4 Table 2. Buffer Area Impacts .......................................................................................................... 9
List of Figures
Figure 1 – USGS Locus Map ...................................................................................... End of Report Figure 2 – Aerial Photos of the Project Area .............................................................. End of Report
Figure 3 – Abutters within 100’ of Project Parcel ...................................................... End of Report Figure 4 – Natural Heritage & Endangered Species Habitat ...................................... End of Report List of Attachments
Stormwater Checklist .................................................................................................. End of Report
Operation and Maintenance Plan ................................................................................ End of Report BMP Sizing Calculations ............................................................................................ End of Report Pollutant Load Removal Estimate .............................................................................. End of Report Design Plans................................................................................................................ End of Report
Resource Area Buffer Disturbances ............................................................................ End of Report
Gleason Avenue Gravel Bioretention Cell Stormwater BMP – Yarmouth, MA Notice of Intent Page 3 of 11
1 INTRODUCTION
1.1 Project Description
As part of a Coastal Zone Management (CZM) grant project, the Town of Yarmouth proposes to install a structural stormwater treatment Best Management Practice (BMP) near the southern bend of Gleason Avenue, a small town-owned road that is paved and provides access to a residential neighborhood. The proposed BMP will consist of a hybrid bioretention area and gravel wetland stormwater BMP to aid in the removal of bacteria and nitrogen from stormwater runoff before it is
discharged into the adjacent Mill Creek and then to Lewis Bay. Stormwater runoff currently discharges untreated to nearby waterbodies, thereby contributing to detrimental impacts to the environment which this project will attempt to mitigate. No new impervious areas or other work is proposed other than construction of the stormwater BMP.
1.2 Project Location & Wetland Conditions
The proposed stormwater BMP site is located on Gleason Avenue (approximate location 41.6526, -70.2616) along the boundary of a wetland adjacent to Mill Creek, which feeds into
Lewis Bay. The nearby wetland was flagged by Ms. Kelly Grant of the Town of Yarmouth in October 2017. The BMP will be located within the wetland’s 100-foot buffer zone, approximately 220 feet due-east of the intersection of Gleason Avenue and Baxter Avenue. Mill Creek is located approximately 400 feet east of the BMP, with Lewis Bay just over a half mile south of the site. The catchment area for this stormwater BMP is approximately 4.40 acres,
based on a delineation previously completed by the Town of Yarmouth. The area surrounding the gravel wetland and bioretention area is mostly residential, with wetlands to the southeast as previously mentioned and a small wooded area to the south. A site locus map is attached as Figure 1 and an aerial photograph is attached as Figure 2 at the
end of this narrative report.
1.3 Project Abutters
The project work will take place within Town owned right-of-way as well as a town-owned parcel identified as #100 and #106 Baxter Avenue (Map 29, Lot 57). Construction will take place just off the roadway and may result in the partial obstruction to the roadway as materials are hauled onsite for the project (anticipated at approximately one to two days). Parcels within 100 feet of the project area are provided in Table 1.
A map of the project parcel and abutters is attached as Figure 3 at the end of this narrative report.
Gleason Avenue Gravel Bioretention Cell Stormwater BMP – Yarmouth, MA Notice of Intent Page 4 of 11
Table 1. Property Owners Abutting Project Area
Property Address Owner Name Owner Mailing Address Town Map Parcel
72 Gleason
Avenue
John F. Nellenback 72 Gleason Avenue
West Yarmouth, MA 02673
29 64
79 Gleason
Avenue
Betty Sue Scaldini 79 Gleason Avenue
West Yarmouth, MA 02673
29 63
84 Gleason
Avenue
Angela M. Sacco 59 Arlington Road
Woburn, MA 01801
29 61
89 Baxter Avenue Edwin C. Wright 73 Claflin Street Belmont, MA 02178 29 54
94 Baxter Avenue Louise Melaragni 12 Cross Street Woburn MA 01801 29 56
95 Baxter Avenue John L and Karen G Reed 95 Baxter Avenue West Yarmouth MA 02673 29 53
99 Baxter Avenue Brian and Linda Polewarczyk 9 Bartemus Trail Unit 202 Nashua NH 03063 29 52
107 Baxter Avenue Michael and Jane Quinn 5003 SW View Point Terrace Portland OR 97239 29 51
112 Baxter Avenue Lewis Bay Realty Investments Inc. PO Box 427 Hyannisport MA 02647 29 58
113 Baxter Avenue John and Sharon Byrne 64 Florence Road Lowell MA 01851 29 50
6 Grist Mill
Lane
David E. McElroy 138 Hilary Drive
Providence RI 02908
29 59
10 Grist
Mill Lane
John and Sharon Chavez 827 Congress Street
Duxbury MA 02332
29 60
14 Grist
Mill Lane
Roderick A. Robertson 125 Chuet Road
Dedham MA 02026
29 68
86 Grist Mill Lane Town of Yarmouth 1146 Route 28 South Yarmouth, MA 02664 29 65
90 Grist Mill Lane Town of Yarmouth 1146 Route 28 South Yarmouth, MA 02664 29 66
96 Grist Mill Lane Town of Yarmouth 1146 Route 28 South Yarmouth, MA 02664 29 67
1.4 Project Background & Existing Conditions
As noted previously, the existing roadway is a small town-owned paved roadway with travel lanes in both directions. Gleason Avenue provides vehicular access to the surrounding residential area, and all work will be performed within the limits of the town-owned roadway, right-of-way, and the parcel containing the wetland buffer zone. The road has two entrances, and thus should
the southern bend be temporarily closed or blocked due to construction, residential access will be
Gleason Avenue Gravel Bioretention Cell Stormwater BMP – Yarmouth, MA Notice of Intent Page 5 of 11
maintained from the northern entrance. Note that no long-term closure or blockage is anticipated,
however it is possible that due to equipment or material loading/unloading, there may be brief periods of time when the road is inaccessible near the BMP. The current stormwater BMP that exists on site is in the form of two leaching catch basins connected by a drain pipe. Although these stormwater systems are somewhat effective in
removing suspended solids and pathogens from stormwater runoff through infiltration and biological treatment, leaching catch basins are not useful in reducing total nitrogen concentrations. Lewis Bay and its contributing waterbodies are subject to Total Maximum Daily Loads
(TMDLs) for both total nitrogen and pathogens as described by the United States Environmental Protection Agency (EPA) USEPA and the Massachusetts Department of Environmental Protection (MassDEP). The Town of Yarmouth is thus required to meet target threshold concentrations by reducing total nitrogen and pathogen loadings by in part implementing stormwater BMPs. As identified by a previous CZM grant, Gleason Avenue’s relatively close
proximity to a waterbody contributing to Lewis Bay, along with the high concentrations of fecal coliform and total nitrogen found in the stormwater runoff there, make it a high-priority location for meeting established TMDLs through stormwater management. Updating the existing stormwater treatment system presents an opportunity to significantly decrease total nitrogen loading while maintaining continued pathogen removal.
1.5 Project Goals
The goals of this project are to install an effective green infrastructure stormwater BMP at a high
priority location to improve water quality within the Lewis Bay system while minimizing impacts to nearby resource areas. The replacement stormwater BMP is designed to reduce bacteria and nitrogen loads to the waterway, restoring aquatic habitat in the area and reducing the impacts of stormwater on the wetland adjacent to the BMP site.
2 DESCRIPTION OF PROPOSED WORK
2.1 Proposed BMP and Functionality
Stormwater runoff first enters the proposed reinforced concrete catch basins from adjacent streets within the subwatershed, consisting primarily of runoff from impervious streets, driveways, and other pervious residential areas. The catch basins channel the stormwater to the BMP through
approximately 30 feet of high-density polyethylene (HDPE) pipe. Once in the BMP, stormwater
enters a sediment forebay to reduce scouring and for pretreatment where heavier sediment particles are allowed to settle out into an area located immediately adjacent to Gleason Avenue in order to facilitate easier maintenance.
Gleason Avenue Gravel Bioretention Cell Stormwater BMP – Yarmouth, MA Notice of Intent Page 6 of 11
From the sediment forebay, stormwater passes into a bioretention area consisting of layers of
loam and sand covered in grass to help provide nutrient uptake through the root systems and providing partial stormwater treatment. This area also functions to oxidize sources of nitrogen in preparation for treatment within the subsurface gravel wetland cell. Side slopes are set to 3H:1V and grassed to promote ease of maintenance and mowing by the town.
During small storm events, all of the stormwater runoff that enters the BMP will infiltrate through the surface and into the subsurface gravel wetland cell. Once stormwater passes through the infiltration zone, it enters an underlying gravel wetland cell consisting of a 24-inch deep zone of crushed stone, lined on the sides and bottom with an impervious liner to prevent infiltration into native soils and contact between stormwater and groundwater. Because this cell functions
as an anaerobic bioreactor, it must be entirely self-contained and isolated from the atmosphere to promote anoxic conditions favorable for denitrification, which occurs as stormwater flows through the subsurface gravel wetland cell and towards the low-flow BMP outlet orifice. This orifice is sized to slowly release stormwater from the BMP over at least a 24-hour period while always maintaining a water level within the subsurface gravel layer. Stormwater exits the
subsurface gravel wetland cell through a low-flow orifice and onto a riprap splash pad, eventually flowing into the marsh adjacent to Mill Creek. The bioretention and gravel wetland area will also contain an overflow control structure, which will discharge to another 6-inch thick riprap splash pad through a 10-foot long, 12-inch HDPE
drain pipe. In the event of larger storm events in excess of the low-flow orifice capacity, stormwater will overflow into this overflow structure and to the outlet pipe outlined above. A riprap overflow berm will also be constructed behind the overflow catch basin as an additional measure of protection during major storms, in which stormwater will overflow directly onto the riprap splash pad and into the marsh. Finally, the existing stone swale near the southern catch
basin on Gleason Avenue will continue to function as an overflow in the event of a historically large storm or in the event that the inlet pipe becomes blocked. These structures will allow the stormwater BMP to safely and effectively pass large storm events. In the event of an even larger event, stormwater will overflow through the existing riprap pad near the southern catch basin.
Work within the roadway is also required to install new drainage structures and piping to convey stormwater runoff into the BMP. First, the existing leaching catch basins and piping will be removed by cutting the asphalt pavement and removing structures. Note that an existing riprap swale will be preserved for emergency overflow. Once completed, two new four-foot diameter, reinforced concrete catch basins and a 21-foot long, 12-inch HDPE pipe connecting drainage pipe
will be installed. All catch basins structures are deep sump and equipped with oil water separators for additional pretreatment. Then, the southernmost catch basin will also connect to a new 4-foot diameter, reinforced concrete manhole via a 26-foot long, 12-inch HDPE drain pipe. The manhole will discharge to a 6-inch thick riprap splash pad via a two-foot long, 12” HDPE pipe. Once completed, disturbed roadway areas will be repaved and new Cape Cod berm constructed along the
perimeter as needed.
Gleason Avenue Gravel Bioretention Cell Stormwater BMP – Yarmouth, MA Notice of Intent Page 7 of 11
Erosion controls will be in place for the duration of construction, and until all disturbed areas are
seeded and stabilized through the growth of new vegetation. Work is anticipated to be performed in December to minimize environmental impacts in advance of stormwater improvements to Gleason Avenue. The Gleason Avenue stormwater BMP implementation and road rehabilitation will be constructed
as shown on the proposed project plans which are included with this application.
2.2 Alternatives Analysis
There were four project alternatives that were considered when determining the most effective design for a new stormwater BMP at the Gleason Avenue site. These alternatives were evaluated for a number of parameters, including level of treatment, natural resources and habitat impacts, costs, and constructability. These alternatives are discussed below.
1. No Action – The purpose of the proposed project is to provide improved treatment of the stormwater runoff discharging from Gleason Avenue, in turn improving water quality within the Lewis Bay system; and as a means of mitigating the effects of climate change. Taking no action will not help achieve any of the project goals and will result in
continued degradation of the Lewis Bay system and reduced coastal resiliency. This may
eventually result in the receiving waters becoming inhospitable to local flora and fauna, and the exposure of nearby residents and infrastructure to the dangers of flooding in the face of future storm surges or sea level rise.
2. Install Small BMP – This alternative will replace the two existing leaching catch basins
with a smaller BMP such as a bioretention area. As this alternative has a smaller footprint requiring less disturbance to the wetland buffer, excavation, and construction, this alternative can be installed at a lower cost than other alternatives, reducing the associated budget. However, a smaller BMP would also provide a lower level of treatment, as nitrogen must typically be filtered through a BMP rather than infiltrated.
Thus, this alternative was not adopted as it would not meet the goals of the project. 3. Install Mid-Sized BMP – This alternative will replace the two existing leaching catch basins with a mid-sized hybrid bioretention and gravel wetland system for improved
stormwater treatment and removal of total nitrogen. The mid-sized footprint will be more
expensive and have greater disturbance than Alternative 2, but will remain within the 100-foot wetland buffer without encroaching into the wetland area itself. This option will provide an increased level of treatment and reduction of pathogens and total nitrogen in runoff discharging to the Lewis Bay system while remaining outside of the wetland
buffer area. This is the selected alternative.
4. Install Large BMP – This alternative will replace the two existing leaching catch basins with a large gravel wetland system for improved stormwater treatment and removal of
Gleason Avenue Gravel Bioretention Cell Stormwater BMP – Yarmouth, MA Notice of Intent Page 8 of 11
total nitrogen. The new BMP will also provide increased coastal resiliency in the face of
storm surges and sea level rise. The large footprint would provide the maximum amount of treatment and coastal resiliency possible for the site. However, the large footprint will also be the most expensive alternative and have the greatest disturbance; extending past the 100-foot wetland buffer and encroaching into the wetland resource area itself. Thus, this alternative was not adopted as it would not meet the goals of the project.
In conclusion, Alternative 3 would achieve the project goals in the most cost-effective manner with minor resource area impacts, ultimately helping to improve water quality and aquatic habitat in the Lewis Bay system while addressing the immediate and long-term concerns of coastal flooding in the area.
2.3 Protective Measures
Measures will be taken to minimize sedimentation and/or siltation into the resource areas and
corresponding buffer zones during construction activities. Implementation of accepted and usual methods of sedimentation erosion control will be used at the site during all phases of construction. Erosion control during construction will include but is not limited to:
• Erosion control devices will be inspected weekly and after each significant rainfall event.
Any entrapped silt or other materials will be removed;
• Erosion control devices will remain in place locally until disturbed surfaces have been stabilized with the final vegetative cover in the area of disruption;
• Construction vehicle access will follow existing roadway to minimize land disturbance
and compaction. Erosion control devices and methods will remain in place until all disturbed surfaces have stabilized. The proposed erosion controls are shown in the project plan set provided.
2.4 Proposed Construction Sequence
The following is the likely sequence of construction:
• Contractor mobilizes to site;
• Install erosion controls;
• Clear and grub staging and construction area;
• Strip topsoil for reuse;
• Excavate, rough-grade, and dig gravel wetland;
• Install an impermeable membrane for wetland separation along the bottom and sides of the excavation;
• Add filter fabric over the bottom of the impermeable membrane;
• Install drainage pipe and outlet control structure within gravel wetland area footprint;
• Place 24 inches of crushed stone to form the bottom layer of the gravel wetland;
• Install interior piping;
Gleason Avenue Gravel Bioretention Cell Stormwater BMP – Yarmouth, MA Notice of Intent Page 9 of 11
• Place a 3-inch layer of pea stone above the crushed stone;
• Install impermeable liner on top of stone layer;
• Place 4 inches of sand on top of the pea stone;
• Place 4 inches of loam on top of the sand layer and perform fine grading as needed;
• Install riprap pads within the sediment forebay, bypass area, and design discharge point;
• Cut and remove asphalt;
• Excavate, remove and dispose of existing leaching catch basins and drain pipe;
• Install two new, 4-foot diameter catch basins and accompanying drain pipe with crushed stone sublayer;
• Install new 4-foot diameter manhole and accompanying drain pipe with crushed stone
sublayer;
• Install flared end sections within the sediment forebay and design discharge point;
• Repair the resulting pipe trench using gravel fill, hot mix asphalt, and rubberized asphalt
sealer;
• Reconstruct the existing Cape Cod berm;
• Restore disturbed surfaces as necessary;
• Remove temporary erosion and/or bypass controls; and
• Demobilize from the site.
3 ACTIVITIES SUBJECT TO REGULATION
3.1 Description of Resource Area Impacts
The installation of the new stormwater BMP will not result in any impacts to resource areas,
however will disturb area within Yarmouth’s 100-foot wetland buffer. This includes excavating for the stormwater BMP, clearing vegetation, stripping existing top soil, etc. Table 2. Buffer Area Impacts
Resource Area Regulation Selection Number Permanent Impacts Temporary Impacts TOTAL IMPACTS
Bordering Vegetated Wetlands Buffer 310 CMR 10.55 1,577 S.F. 325 S.F. 1,902 S.F.
This site is not located within Natural Heritage and Endangered Species (NHES) habitat areas for rare wildlife or rare species, within any Areas of Critical Environmental Concern (ACEC) or Outstanding Resource Water (ORW). It is, however, located adjacent to NHES priority habitat of
rare species (PH) number 259 (see Figure 4 attached). Finally, according to the Federal Emergency Management Agency’s (FEMA) Flood Insurance Rate Map, the project is located entirely within flood zone AE, which represents the 100-year floodplain.
Gleason Avenue Gravel Bioretention Cell Stormwater BMP – Yarmouth, MA Notice of Intent Page 10 of 11
This project has been designed such that it will comply with resource area performance
standards. The intent of this project is to reduce erosion of the identified resource areas, increase water quality through the treatment of stormwater runoff, and to protect the interests identified in M.G.L.c.131§40.
4 DEP STORMWATER STANDARDS & REPORT
The following is an overview of project compliance with the ten stormwater standards. The installation of the above discussed stream crossing will not create additional impervious area or stormwater volume. The completed checklist is attached at the end of the narrative.
Standard 1. No New Untreated Discharges
No untreated discharges proposed, no increase in impervious area. Existing system consists of leaching catch basins; proposed gravel bioretention cell will result in increased treatment of stormwater for discharge to the adjacent wetland.
Standard 2. Peak Rate Attenuation N/A – No new impervious area is proposed as part of this project; therefore, peak rate discharge will remain the same. The existing paved roadway is essentially impermeable, and thus nearly all stormwater either drains into the leaching catch basins or runs off the roadway. Conditions will be unchanged under proposed
plans with the exception of replacing the leaching catch basins with reinforced concrete models, resulting in the percolation of stormwater through the new BMP rather than the catch basins. Standard 3. Recharge
N/A – No new impervious area is proposed as part of this project; therefore, groundwater recharge will remain the same. Standard 4. Water Quality N/A – The project will have no adverse impact to water quality, and is solely
occurring to improve downstream water quality. TMDLs for both nitrogen and pathogen loading to the waterway adjacent the project area, and the proposed stormwater bioretention area and constructed stormwater wetlands BMPs are identified by the Massachusetts Stormwater Handbook as effective at removing nitrogen and pathogens from stormwater discharges. Additionally, proper erosion
and sediment controls shown on the plans will be installed prior to construction. Standard 5. Land Uses with Higher Potential Pollutant Loads N/A – The project is not located within a land use with higher potential pollutant loads.
Gleason Avenue Gravel Bioretention Cell Stormwater BMP – Yarmouth, MA Notice of Intent Page 11 of 11
Standard 6. Critical Areas
N/A – The project is not in a critical area as defined in the stormwater standards. Standard 7. Redevelopments and Other Projects Subject to the Standards Only to the Maximum Extent Practicable N/A – This is a redevelopment project by way of stormwater management and
drainage improvements. Standard 8. Construction Period Pollution Prevention and Erosion and Sedimentation Control Project includes <1 acre of disturbance therefore not covered under the
Construction General Permit. Erosion and sedimentation measures have been outlined above and identified on the project plans. Standard 9. Operations & Maintenance Plan An Operations and Maintenance Plan is attached to this application.
Standard 10. Prohibition of Illicit Discharges No illicit discharges will be created or connected as part of this project.
Feet
0 400 800
PROJECT LOCATION SCALE
PROJECT AREA SCALE
Feet
0 1000 2000
Feet
0 100 200
Feet
0 200 400
62
62
0.16 AC
56
0.21 AC
61
0.19 AC
63
0.16 AC
64
0.74 AC
65
0.58 AC
TAX MAP SHEET 29
TOWN OF YARMOUTH LAND BANK
66
0.68 AC
TAX MAP SHEET 29
TOWN OF YARMOUTH LAND BANK
67
0.6 AC
TAX MAP SHEET 29
TOWN OF YARMOUTH LAND BANK
60
0.28 AC59
0.26 AC58
0.34 AC
32
0.16 AC
31
0.16 AC
GLEASON AVENUE
BAXTER AVENUETAX MAP SHEET 29
72 GLEASON AVENUE
NELLENBACK, JOHN F.
54
0.24 AC
53
0.21 AC
52
0.26 AC
SUBJECT PARCEL:
TAX MAP SHEET 29
GLEASON AVENUE
UNITED STATES OF AMERICA
57
2.14 AC
NONEXISTENT ROADWAY
51
0.24 AC
TAX MAP SHEET 29
79 GLEASON AVENUE
SCALDINI, BETTY SUE
TAX MAP SHEET 29
84 GLEASON AVENUE
SACCO, ANGELA M.
CLEVE
L
A
N
D
W
A
Y
JACQUELINE
C
IRCLE
PAMEL
A
C
O
U
R
T
55
0.22 AC
53
0.21 AC
40
0.27 AC
41
0.24 AC
42
0.23 AC
34
0.22 AC
35
0.22 AC
36
0.22 AC
37
0.22 AC
38
0.3 AC
33
0.32 AC
43
0.36 AC
50
0.21 AC
68
0.95 AC
74
0.29 AC
75
0.24 AC
1
0.71 AC 64 0.74 AC
183
0.37 AC
184
0.38 AC
32
0.48 AC
GRIST MI
L
L
L
A
N
E
TAX MAP SHEET 29
94 BAXTER AVENUE
MELARAGNI, LOUISE
TAX MAP SHEET 29
89 BAXTER AVENUE
WRIGHT, EDWIN C.
TAX MAP SHEET 29
95 BAXTER AVENUE
REED, JOHN L.
TAX MAP SHEET 29
99 BAXTER AVENUE
POLEWARCZYK, BRIAN D.
TAX MAP SHEET 29
107 BAXTER AVENUE
QUINN, MICHAEL J.
TAX MAP SHEET 29
113 BAXTER AVENUE
BYRNE, JOHN P.
49
0.25 AC
44
0.2 AC
TAX MAP SHEET 29
112 BAXTER AVENUE
LEWIS BAY RLTY INVSTMNTS INC
TAX MAP SHEET 29
6 GRIST MILL LANE
MCELROY, DAVID E.
TAX MAP SHEET 29
10 GRIST MILL LANE
CHAVEZ, JOHN M.
TAX MAP SHEET 29
14 GRIST MILL LANE
ROBERTSON, RODERICK A.
27
0.29 AC 73
0.22 AC
69
0.8 AC Feet
0 100 200
PROJECT AREA
NHESP 2017 PRIORITY
HABITAT OF RARE SPECIES,
#259;
NHESP 2017 ESTIMATED
HABITAT OF RARE WILDLIFE
Feet
0 200 400
Yarmouth Stormwater Report Checklist.doc • 04/01/08 Stormwater Report Checklist • Page 1 of 8
Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report
A. Introduction
Important: When filling out forms on the computer, use only the tab key to move your cursor - do not use the return key.
A Stormwater Report must be submitted with the Notice of Intent permit application to document compliance with the Stormwater Management Standards. The following checklist is NOT a substitute for the Stormwater Report (which should provide more substantive and detailed information) but is offered here as a tool to help the applicant organize their Stormwater Management documentation for their Report and for the reviewer to assess this information in a consistent format. As noted in the Checklist, the Stormwater Report must contain the engineering computations and supporting information set forth in Volume 3 of the Massachusetts Stormwater Handbook. The Stormwater Report must be prepared and certified by a Registered Professional Engineer (RPE) licensed in the Commonwealth. The Stormwater Report must include:
• The Stormwater Checklist completed and stamped by a Registered Professional Engineer (see
page 2) that certifies that the Stormwater Report contains all required submittals.1 This Checklist is to be used as the cover for the completed Stormwater Report.
• Applicant/Project Name
• Project Address
• Name of Firm and Registered Professional Engineer that prepared the Report
• Long-Term Pollution Prevention Plan required by Standards 4-6
• Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan required by Standard 82
• Operation and Maintenance Plan required by Standard 9 In addition to all plans and supporting information, the Stormwater Report must include a brief narrative describing stormwater management practices, including environmentally sensitive site design and LID
techniques, along with a diagram depicting runoff through the proposed BMP treatment train. Plans are required to show existing and proposed conditions, identify all wetland resource areas, NRCS soil types,
critical areas, Land Uses with Higher Potential Pollutant Loads (LUHPPL), and any areas on the site where infiltration rate is greater than 2.4 inches per hour. The Plans shall identify the drainage areas for both existing and proposed conditions at a scale that enables verification of supporting calculations.
As noted in the Checklist, the Stormwater Management Report shall document compliance with each of the Stormwater Management Standards as provided in the Massachusetts Stormwater Handbook. The
soils evaluation and calculations shall be done using the methodologies set forth in Volume 3 of the Massachusetts Stormwater Handbook. To ensure that the Stormwater Report is complete, applicants are required to fill in the Stormwater Report
Checklist by checking the box to indicate that the specified information has been included in the Stormwater Report. If any of the information specified in the checklist has not been submitted, the
applicant must provide an explanation. The completed Stormwater Report Checklist and Certification must be submitted with the Stormwater Report.
1 The Stormwater Report may also include the Illicit Discharge Compliance Statement required by Standard 10. If not included in the Stormwater Report, the Illicit Discharge Compliance Statement must be submitted prior to the discharge of stormwater runoff to the post-construction best management practices. 2 For some complex projects, it may not be possible to include the Construction Period Erosion and Sedimentation Control Plan in the Stormwater Report. In that event, the issuing authority has the discretion to issue an Order of Conditions that approves the project and includes a condition requiring the proponent to submit the Construction Period Erosion and Sedimentation Control Plan before commencing any land disturbance activity on the site.
Yarmouth Stormwater Report Checklist.doc • 04/01/08 Stormwater Report Checklist • Page 3 of 8
Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report
Checklist (continued)
LID Measures: Stormwater Standards require LID measures to be considered. Document what environmentally sensitive design and LID Techniques were considered during the planning and design of the project:
No disturbance to any Wetland Resource Areas
Site Design Practices (e.g. clustered development, reduced frontage setbacks)
Reduced Impervious Area (Redevelopment Only)
Minimizing disturbance to existing trees and shrubs
LID Site Design Credit Requested:
Credit 1
Credit 2
Credit 3
Use of “country drainage” versus curb and gutter conveyance and pipe
Bioretention Cells (includes Rain Gardens)
Constructed Stormwater Wetlands (includes Gravel Wetlands designs)
Treebox Filter
Water Quality Swale
Grass Channel
Green Roof
Other (describe): project consists of constructing a BMP to treat runoff from an existing outfall that discharges untreated stormwater to a wetland area
Standard 1: No New Untreated Discharges
No new untreated discharges
Outlets have been designed so there is no erosion or scour to wetlands and waters of the Commonwealth
Supporting calculations specified in Volume 3 of the Massachusetts Stormwater Handbook included.
Yarmouth Stormwater Report Checklist.doc • 04/01/08 Stormwater Report Checklist • Page 4 of 8
Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report
Checklist (continued)
Standard 2: Peak Rate Attenuation
Standard 2 waiver requested because the project is located in land subject to coastal storm flowage and stormwater discharge is to a wetland subject to coastal flooding.
Evaluation provided to determine whether off-site flooding increases during the 100-year 24-hour storm.
Calculations provided to show that post-development peak discharge rates do not exceed pre-
development rates for the 2-year and 10-year 24-hour storms. If evaluation shows that off-site flooding increases during the 100-year 24-hour storm, calculations are also provided to show that post-development peak discharge rates do not exceed pre-development rates for the 100-year 24-hour storm.
Standard 3: Recharge
Soil Analysis provided.
Required Recharge Volume calculation provided.
Required Recharge volume reduced through use of the LID site Design Credits.
Sizing the infiltration, BMPs is based on the following method: Check the method used.
Static Simple Dynamic Dynamic Field1
Runoff from all impervious areas at the site discharging to the infiltration BMP.
Runoff from all impervious areas at the site is not discharging to the infiltration BMP and calculations are provided showing that the drainage area contributing runoff to the infiltration BMPs is sufficient to generate the required recharge volume.
Recharge BMPs have been sized to infiltrate the Required Recharge Volume.
Recharge BMPs have been sized to infiltrate the Required Recharge Volume only to the maximum extent practicable for the following reason:
Site is comprised solely of C and D soils and/or bedrock at the land surface
M.G.L. c. 21E sites pursuant to 310 CMR 40.0000
Solid Waste Landfill pursuant to 310 CMR 19.000
Project is otherwise subject to Stormwater Management Standards only to the maximum extent practicable.
Calculations showing that the infiltration BMPs will drain in 72 hours are provided.
Property includes a M.G.L. c. 21E site or a solid waste landfill and a mounding analysis is included.
1 80% TSS removal is required prior to discharge to infiltration BMP if Dynamic Field method is used.
Yarmouth Stormwater Report Checklist.doc • 04/01/08 Stormwater Report Checklist • Page 5 of 8
Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report
Checklist (continued)
Standard 3: Recharge (continued)
The infiltration BMP is used to attenuate peak flows during storms greater than or equal to the 10-year 24-hour storm and separation to seasonal high groundwater is less than 4 feet and a mounding analysis is provided.
Documentation is provided showing that infiltration BMPs do not adversely impact nearby wetland resource areas. Standard 4: Water Quality
The Long-Term Pollution Prevention Plan typically includes the following:
• Good housekeeping practices;
• Provisions for storing materials and waste products inside or under cover;
• Vehicle washing controls;
• Requirements for routine inspections and maintenance of stormwater BMPs;
• Spill prevention and response plans;
• Provisions for maintenance of lawns, gardens, and other landscaped areas;
• Requirements for storage and use of fertilizers, herbicides, and pesticides;
• Pet waste management provisions;
• Provisions for operation and management of septic systems;
• Provisions for solid waste management;
• Snow disposal and plowing plans relative to Wetland Resource Areas;
• Winter Road Salt and/or Sand Use and Storage restrictions;
• Street sweeping schedules;
• Provisions for prevention of illicit discharges to the stormwater management system;
• Documentation that Stormwater BMPs are designed to provide for shutdown and containment in the event of a spill or discharges to or near critical areas or from LUHPPL;
• Training for staff or personnel involved with implementing Long-Term Pollution Prevention Plan;
• List of Emergency contacts for implementing Long-Term Pollution Prevention Plan.
A Long-Term Pollution Prevention Plan is attached to Stormwater Report and is included as an attachment to the Wetlands Notice of Intent.
Treatment BMPs subject to the 44% TSS removal pretreatment requirement and the one inch rule for calculating the water quality volume are included, and discharge:
is within the Zone II or Interim Wellhead Protection Area
is near or to other critical areas
is within soils with a rapid infiltration rate (greater than 2.4 inches per hour)
involves runoff from land uses with higher potential pollutant loads.
The Required Water Quality Volume is reduced through use of the LID site Design Credits.
Calculations documenting that the treatment train meets the 80% TSS removal requirement and, if applicable, the 44% TSS removal pretreatment requirement, are provided.
Yarmouth Stormwater Report Checklist.doc • 04/01/08 Stormwater Report Checklist • Page 6 of 8
Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report
Checklist (continued)
Standard 4: Water Quality (continued)
The BMP is sized (and calculations provided) based on:
The ½” or 1” Water Quality Volume or
The equivalent flow rate associated with the Water Quality Volume and documentation is provided showing that the BMP treats the required water quality volume.
The applicant proposes to use proprietary BMPs, and documentation supporting use of proprietary
BMP and proposed TSS removal rate is provided. This documentation may be in the form of the propriety BMP checklist found in Volume 2, Chapter 4 of the Massachusetts Stormwater Handbook and submitting copies of the TARP Report, STEP Report, and/or other third party studies verifying performance of the proprietary BMPs.
A TMDL exists that indicates a need to reduce pollutants other than TSS and documentation showing that the BMPs selected are consistent with the TMDL is provided.
Standard 5: Land Uses With Higher Potential Pollutant Loads (LUHPPLs)
The NPDES Multi-Sector General Permit covers the land use and the Stormwater Pollution Prevention Plan (SWPPP) has been included with the Stormwater Report. The NPDES Multi-Sector General Permit covers the land use and the SWPPP will be submitted prior to the discharge of stormwater to the post-construction stormwater BMPs.
The NPDES Multi-Sector General Permit does not cover the land use.
LUHPPLs are located at the site and industry specific source control and pollution prevention measures have been proposed to reduce or eliminate the exposure of LUHPPLs to rain, snow, snow melt and runoff, and been included in the long term Pollution Prevention Plan.
All exposure has been eliminated.
All exposure has not been eliminated and all BMPs selected are on MassDEP LUHPPL list.
The LUHPPL has the potential to generate runoff with moderate to higher concentrations of oil and grease (e.g. all parking lots with >1000 vehicle trips per day) and the treatment train includes an oil grit separator, a filtering bioretention area, a sand filter or equivalent.
Standard 6: Critical Areas
The discharge is near or to a critical area and the treatment train includes only BMPs that MassDEP has approved for stormwater discharges to or near that particular class of critical area.
Critical areas and BMPs are identified in the Stormwater Report.
Yarmouth Stormwater Report Checklist.doc • 04/01/08 Stormwater Report Checklist • Page 7 of 8
Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report
Checklist (continued)
Standard 7: Redevelopments and Other Projects Subject to the Standards only to the maximum extent practicable
The project is subject to the Stormwater Management Standards only to the maximum Extent Practicable as a:
Limited Project
Small Residential Projects: 5-9 single family houses or 5-9 units in a multi-family development provided there is no discharge that may potentially affect a critical area.
Small Residential Projects: 2-4 single family houses or 2-4 units in a multi-family development with a discharge to a critical area
Marina and/or boatyard provided the hull painting, service and maintenance areas are protected from exposure to rain, snow, snow melt and runoff
Bike Path and/or Foot Path
Redevelopment Project
Redevelopment portion of mix of new and redevelopment.
Certain standards are not fully met (Standard No. 1, 8, 9, and 10 must always be fully met) and an explanation of why these standards are not met is contained in the Stormwater Report.
The project involves redevelopment and a description of all measures that have been taken to improve existing conditions is provided in the Stormwater Report. The redevelopment checklist found in Volume 2 Chapter 3 of the Massachusetts Stormwater Handbook may be used to document that the proposed stormwater management system (a) complies with Standards 2, 3 and the pretreatment and structural BMP requirements of Standards 4-6 to the maximum extent practicable and (b) improves existing conditions.
Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control
A Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan must include the following information:
• Narrative;
• Construction Period Operation and Maintenance Plan;
• Names of Persons or Entity Responsible for Plan Compliance;
• Construction Period Pollution Prevention Measures;
• Erosion and Sedimentation Control Plan Drawings;
• Detail drawings and specifications for erosion control BMPs, including sizing calculations;
• Vegetation Planning;
• Site Development Plan;
• Construction Sequencing Plan;
• Sequencing of Erosion and Sedimentation Controls;
• Operation and Maintenance of Erosion and Sedimentation Controls;
• Inspection Schedule;
• Maintenance Schedule;
• Inspection and Maintenance Log Form.
A Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan containing the information set forth above has been included in the Stormwater Report.
Yarmouth Stormwater Report Checklist.doc • 04/01/08 Stormwater Report Checklist • Page 8 of 8
Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report
Checklist (continued)
Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control (continued)
The project is highly complex and information is included in the Stormwater Report that explains why
it is not possible to submit the Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan with the application. A Construction Period Pollution Prevention and Erosion and Sedimentation Control has not been included in the Stormwater Report but will be submitted before land disturbance begins.
The project is not covered by a NPDES Construction General Permit.
The project is covered by a NPDES Construction General Permit and a copy of the SWPPP is in the Stormwater Report.
The project is covered by a NPDES Construction General Permit but no SWPPP been submitted. The SWPPP will be submitted BEFORE land disturbance begins.
Standard 9: Operation and Maintenance Plan
The Post Construction Operation and Maintenance Plan is included in the Stormwater Report and includes the following information:
Name of the stormwater management system owners;
Party responsible for operation and maintenance;
Schedule for implementation of routine and non-routine maintenance tasks;
Plan showing the location of all stormwater BMPs maintenance access areas;
Description and delineation of public safety features;
Estimated operation and maintenance budget; and
Operation and Maintenance Log Form.
The responsible party is not the owner of the parcel where the BMP is located and the Stormwater Report includes the following submissions:
A copy of the legal instrument (deed, homeowner’s association, utility trust or other legal entity) that establishes the terms of and legal responsibility for the operation and maintenance of the project site stormwater BMPs;
A plan and easement deed that allows site access for the legal entity to operate and maintain BMP functions.
Standard 10: Prohibition of Illicit Discharges
The Long-Term Pollution Prevention Plan includes measures to prevent illicit discharges;
An Illicit Discharge Compliance Statement is attached;
NO Illicit Discharge Compliance Statement is attached but will be submitted prior to the discharge of any stormwater to post-construction BMPs.
Operation and Maintenance Plan
for
Gravel Bioretention Cell Stormwater BMP
Gleason Avenue
Yarmouth, MA
October 2018
Prepared For: Town of Yarmouth
Department of Public Works (DPW)
99 Buck Island Rd
West Yarmouth, MA 02673
Prepared By: Comprehensive Environmental Inc. 225 Cedar Hill Street Marlborough, MA 017552
Operations and Maintenance Plan – Gleason Avenue, Yarmouth MA
Gravel Bioretention Cell Stormwater BMP
Introduction This Operation and Maintenance (O&M) Plan is prepared for the Gravel Bioretention Cell Stormwater BMP to reduce nitrogen and bacteria loadings to impaired waters as part of the Professional On-call Services to Assist with MS4 Compliance for the Town of Yarmouth, MA. The project is located along Gleason Avenue in Yarmouth, with final design plans for the project dated April 2018. The Plan is broken into two main components: 1. A narrative that provides background information on the project and describes the BMP; and 2. Inspection and Maintenance Plan
Project Need
The Town of Yarmouth has several waterbodies within its borders listed on the Massachusetts Integrated List of Waters (305b/303d list) as waters impaired for total nitrogen and bacteria. Among them, Mill Creek and Lewis Bay have final Total Maximum Daily Loads (TMDLs) for pathogens prepared December 2015, and draft TMDLs for total nitrogen prepared November 2016. Both surface
water systems support shellfish beds and have portions that have been only “conditionally approved”
or “prohibited” from shellfishing due to poor water quality and health reasons. Both of the above waterbodies, along with contributing tributaries, are high-priority waterbodies within Yarmouth. As outlined in the 2003 Massachusetts Estuaries Project Embayment Restoration and Guidance for
Implementation Strategies, stormwater transports nutrients, pathogens and bacteria, metals, suspended
solids, and other constituents into embayments via point sources (e.g., stormwater outfall pipes) and nonpoint sources (e.g., runoff from fertilizer). Nitrogen compounds are present in the stormwater and eventually discharge into embayments. Anthropogenic sources of nitrogen carried by stormwater include fertilizers (from agricultural, suburban, and urban areas), septic system leachate, farm animal
and pet waste, and atmospheric deposition and precipitation of nitrogen compounds from power plants
and automobiles. Septic system leachate and animal waste can also cause pathogen loading via stormwater. Background
The Town of Yarmouth partnered with Comprehensive Environmental Inc. (CEI) to complete design
and construction of Stormwater Best Management Practices (BMP) retrofits that can be implemented
town-wide within multiple areas. After prioritizing a number of locations and performing various site assessments within the Town, CEI identified multiple locations with high pollutant loadings from stormwater that would benefit from the installation of a treatment BMP, including the area around Gleason Avenue. The proposed BMP construction site is located along the southern bend of Gleason
Road, approximately 220 feet east of the intersection of Gleason Avenue and Baxter Avenue, near the
southern coast of Yarmouth within the Lewis Bay Watershed and located about a half mile north of Lewis Bay. Existing stormwater runoff from this area is collected in two leaching catch basins, where it percolates into the ground and eventually enters the groundwater there, however this design provides only minimal nitrogen treatment and removal.
Project Goals
The goals of this project are to install an effective green infrastructure stormwater BMP at a high priority
location to improve water quality within the Lewis Bay system, including Mill Creek. The replacement stormwater BMP is designed to reduce both bacteria and nitrogen loads to the waterway, restoring aquatic habitat in the area and reducing the impacts of stormwater on the marshland adjacent to the BMP site.
Operations and Maintenance Plan – Gleason Avenue, Yarmouth MA
Gravel Bioretention Cell Stormwater BMP
Site Location & Description
The site is located at the southern bend in Gleason Avenue, which borders the northwest end of a marshland that surrounds the northern portion of Mill Creek. Surrounding area consists of medium
density residential areas served by public water supply and onsite wastewater septic systems, along with undeveloped wooded and wetland areas. Contributing areas are as follows: Gravel Bioretention Cell BMP: 1.17 acres impervious, 3.22 acres pervious Soils at the project site are classified as Hydrologic Group “A” and consists of sand consistent with
soils across the Cape, and possibly associated with historic filling of the area for development purposes. Groundwater depth is located greater than 2 feet below the native ground surface based on observations within the proposed BMP location. Owner and Operator:
BMP Owner: Town of Yarmouth
O&M Responsible Party: Town of Yarmouth DPW
Source of Long-Term O&M Funding: Annual Department Budgets BMP Location Gleason Road, Yarmouth MA BMP Description
Design and construction of a roadside BMP consisting of a hybrid surface bioretention area and
subsurface gravel wetland will be constructed at the above location. As noted by the UNH Stormwater
Center, “the majority of nitrogen washoff in parking lots occurs with the first 0.3-inch of precipitation” (Gunderson et al., 2012). Due to space constraints due to an un-constructed roadway, the adjacent wetland area, and presence of nearby utilities, the BMP could not meet the 0.30-inch storm from the sizeable contributing subwatershed (4.40 acres, including 1.17 acres of impervious). Therefore, the
BMP is currently designed to hold runoff to the maximum extent practicable over the contributing
impervious area, with design overflow structures incorporated to mitigate excess ponding within the BMP during peak flows. Stormwater runoff enters the proposed reinforced concrete catch basins from adjacent streets within
the subwatershed, consisting primarily of runoff from impervious streets, driveways, and other
pervious residential areas. The catch basins channel the stormwater to the BMP through approximately 30 feet of HDPE pipe. Once in the BMP, stormwater enters a sediment forebay for pretreatment where heavier sediment particles are allowed to settle out into an area located immediately adjacent to Gleason Avenue in order to facilitate easier maintenance. From the sediment
forebay, stormwater passes into a bioretention area consisting of layers of loam and sand covered in
grass to help provide nutrient uptake through the root systems and providing partial stormwater treatment. This area also functions to oxidize sources of nitrogen in preparation for treatment within the subsurface gravel wetland cell. Side slopes are set to 3H:1V and grassed to promote ease of maintenance and mowing by the town.
During small storm events, all of the stormwater runoff that enters the BMP will infiltrate through the surface and into the subsurface gravel wetland cell. Once stormwater passes through the infiltration zone, it enters an underlying gravel wetland cell consisting of a 24-inch deep zone of crushed stone, lined on the sides and bottom with an impervious liner to prevent infiltration into native soils and
contact between stormwater and groundwater. Because this cell functions as an anaerobic bioreactor,
it must be entirely self-contained and isolated from the atmosphere to promote anoxic
Operations and Maintenance Plan – Gleason Avenue, Yarmouth MA
Gravel Bioretention Cell Stormwater BMP
conditions favorable for denitrification, which occurs as stormwater flows through the subsurface gravel wetland cell and towards the low-flow BMP outlet orifice. This orifice is sized to slowly
release stormwater from the BMP over at least a 24-hour period while always maintaining a water
level within the subsurface gravel layer. Stormwater exits the subsurface gravel wetland cell through a low-flow orifice and onto a riprap splash pad, eventually flowing into the marsh adjacent to Mill Creek.
In the event of larger storm events, stormwater will overflow into a catch basin located within the BMP
and to the existing outlet pipe outlined above. A riprap overflow berm will also be constructed behind the overflow catch basin as an additional measure of protection during major storms, in which stormwater will overflow directly onto the riprap splash pad and into the marsh. Finally, the existing stone swale near the southern catch basin on Gleason Avenue will continue to function as an overflow
in the event of a historically large storm or in the event that the inlet pipe becomes blocked. All catch
basins structures are deep sump and equipped with oil water separators for additional pretreatment.
Operations and Maintenance Plan – Gravel Bioretention Cell
Gateway Marina BMP, Intersection of South Street & Pleasant Street
Name of Person Conducting Inspection: Date of Inspection:
Maintenance Item
Action
Frequency
Satisfactory/
Unsatisfactory
Comments
1. Sediment Forebay
Sediment
accumulation
Visually inspect sediment forebay area
to ensure that there is no sediment
build-up.
Inspect quarterly. Establish a
schedule based on first year
accumulation (min. 1x/yr).
Do not let sediment build up
to 4 inches at any spot.
Debris & litter
removal
Inspect for the presence of floatable
debris or other materials within the
surface BMPs. Remove if necessary.
Inspect spring and fall.
Remove as needed.
Erosion Inspect area to ensure that there is no
erosion, channelization or scouring.
Regrade as needed.
Inspect spring and fall.
Regrade as needed.
Animal burrows Inspect side slopes and surrounding
area for animal burrows, holes, or
other damage.
Inspect spring and fall, or
more frequently if persistent
damage is found. Repair as
needed.
2. Surface Bioretention Area
Debris & litter
removal
Inspect for the presence of floatable
debris or other materials within the
surface BMPs. Remove if necessary.
Inspect spring and fall.
Remove as needed.
Erosion Inspect area to ensure that there is no
erosion, channelization or scouring.
Regrade as needed.
Inspect spring and fall.
Regrade as needed.
Animal burrows Inspect side slopes and surrounding
area for animal burrows, holes, or
other damage.
Inspect spring and fall, or
more frequently if persistent
damage is found. Repair as
needed.
Proper function of
wetland
Visually inspect the infiltration area.
Ensure that it is adequately draining
water and is not filled with sediment.
Twice a year, 72 hours after a
storm.
Operations and Maintenance Plan – Gravel Bioretention Cell
Gateway Marina BMP, Intersection of South Street & Pleasant Street
Maintenance Item
Action
Frequency
Satisfactory/
Unsatisfactory
Comments
3. Structures
Basin structural
condition
Visually inspect all catch basins and
manholes for structural integrity.
Repair or replace if necessary.
Inspect minimum of once a
year.
Catch basin sediment
accumulation
Check for excess sediment
accumulation or debris within catch
basin sumps. Note depth in comments.
Remove if necessary.
Inspect quarterly for first
year. Establish schedule
based on first year
accumulation (min. 1x/yr).
Oil-water separator
hood
Verify that the oil/water separator
hoods are in place. Repair or replace if
necessary.
Inspect spring and fall. Repair
or replaced as needed.
Inlet & outlet pipes Ensure inlet & outlet pipes are clear of
debris & free flowing.
Inspect spring and fall.
Remove as needed.
Low-flow outlet pipe Inspect outlet basin structures and
verify that 0.5” orifice is free flowing.
Spring and fall.
Overflow grate clear
of debris
Ensure outlet control structure and
overflow grate is clear of debris and is
functioning properly.
Inspect spring and fall.
Remove as needed.
HDPE riser pipes Verify that HDPE riser pipes are in place
and not clogged or blocked by debris.
Inspect spring and fall. Repair
or replaced as needed.
Riprap Inspect riprap splash pads and overflow
bypass area to ensure stone is not
displaced, clogged with sediment, or
excess vegetation accumulation.
Inspect spring & fall. Remove
debris or replace stone as
needed.
Operations and Maintenance Plan – Gravel Bioretention Cell
Gateway Marina BMP, Intersection of South Street & Pleasant Street
Maintenance Item
Action
Frequency
Satisfactory/
Unsatisfactory
Comments
4. Vegetation and Plantings
Vegetation cover
adequate
Inspect bioretention side slopes for
adequate vegetation coverage. Re-
seed and water bare areas as
necessary.
Minimum once a year.
Mow basins Inspect and mow basins as needed.
Remove grass clippings and dead
vegetation
Inspect monthly during
growing season. Mow as
needed
Invasive species
absent
Inspect for invasive species
encroachment. Remove if necessary.
Inspect monthly during
growing season. Remove as
needed.
Weeds absent Inspect for weed growth in the basin &
around plants. Remove as required, at
least twice per year.
Inspect monthly during
growing season. Remove as
needed (minimum
twice/year).
No evidence of insect
infestation
Visually inspect for insect infestation.
Treat with environmentally friendly
pesticides.
Inspect monthly during
growing season. Treat as
needed.
Additional Comments:
Action(s) to be Taken (Complete a Maintenance Record form when any maintenance is performed):
Operations and Maintenance Plan – Gravel Bioretention Cell
Gateway Marina BMP, Intersection of South Street & Pleasant Street
Maintenance Record
Date(s) of Maintenance:
Maintained By:
Date of Previous Maintenance:
Material Hauled Away By:
Maintenance Item & Type of Maintenance*:
Material Sent To:
Depth of Material Removed:
Volume of Material Removed:
Material Description:
Comments:
*Types of Maintenance: 1) Debris & Litter Removal 2) Sediment Removal 3) Structural Integrity / Repairs
Client:
COMPREHENSIVE Project: Sheet of
ENVIRONMENTAL Subject:
INCORPORATED Completed by: Date:
Revised by: Date:
Checked by: Date:
YARMOUTH HYBRID BIORETENTION AREA AND GRAVEL WETLAND CELL
THE FOLLOWING WORKSHEET DETAILS CONCEPTUAL STORMWATER BMP SIZING FOR THE PROPOSED
HYBRID BIORETENTION AREA AND GRAVEL WETLAND AT THE SOUTHEAST CORNER OF GLEASON AVENUE
IN YARMOUTH, MASSACHUSETTS.
CONTRIBUTING LAND USE SIZE AND TYPES ARE PROVIDED BELOW:
NOTES:
* CONTRIBUTING WATERSHED AREA DELINEATED BY THE TOWN OF YARMOUTH.
PER THE MASSACHUSETTS STORMWATER HANDBOOK, DESIRED BMP SIZING IS BASED ON THE
WATER QUALITY VOLUME (WQV), OR 1" OF RUNOFF OVER THE CONTRIBUTING IMPERVIOUS AREA.
TOTAL IMPERVIOUS AREA = ACRES (SEE TABLE ABOVE)
WATER QUALITY VOLUME (WQV) = 1 INCH OF RUNOFF OVER CONTRIBUTING IMPERVIOUS AREA.
AREA = ACRES x 43,560 SF PER ACRE 1 INCH x 1 FT PER 12 INCHES
WQV = CUBIC FEET
PROPOSED STORMWATER BMP = GRAVEL BIORETENTION CELL
FOR OPTIMAL NITROGEN REMOVAL, STORMWATER BMPS SHOULD HOLD A MINIMUM
OF 0.3 INCHES OF RUNOFF OVER THE CONTRIBUTING IMPERVIOUS AREA.
AREA = ACRES x 43,560 SF PER ACRE INCH x 1 FT PER 12 INCHES
0.3‐INCH VOLUME = CUBIC FEET
DESIRED SIZING = CUBIC FEET
PROPOSED PRETREATMENT BMP = SEDIMENT FOREBAY
PER MA STORMWATER MANUAL, SEDIMENT FOREBAYS SHOULD HOLD 10% OF THE WQV.
WATER QUALITY VOL. CUBIC FEET
DESIRED SIZING = CUBIC FEET x
DESIRED SIZING = CUBIC FEET
17%
(%)
% OF TOTAL
PERVIOUS LAND USES
IMPERVIOUS LAND USES
0.75
1.17
0.42
100%
73%
73%
27%
10%
DRIVEWAYS AND ROOFTOPS
ROADS
TOTAL
TOTAL
PERVIOUS GRASS, LAWN, ETC.
4,254
1.17
3.22
1,276
3.22
191,450
140,400
140,400
0.31.17
Town of Yarmouth, Massachusetts
Gleason Ave. BMP Design 11
Hybrid Bioretention Area and Gravel Wetland Cell Sizing
TOTALS
(ACRES)
51,050
18,200
AREA
MC 02/01/18
NC 03/09/18
NC 03/09/18
425
4,254
4,254 10%
32,850
(SQ. FT.)
1,276
4.40
LAND USE TYPES
1.17
317‐3‐6 Gleason Ave. Yarmouth, MAMC 2/1/2018NC 3/9/2018Elevation (ft) Area (sf)Avg Surface Area (sf)Void SpaceIncremental Storage (cf)AccumulatedStorage (cf) ‐> Try sizing BMP for 1" design stormOptimal Design Conditions, 1" Water Quality Volume (WQV)3.00 243 0 0.3 0 04,2543.50 2432430.336 36Total Available Surface Storage (cf)3864.002432430.336 73Feasible to Store WQV?NO4.502432430.336 109 4,2545.002432430.336 146Available Internal Storage Reservoir, ISR (cf)194Total Subsurface Storage Volume 146 25.0%Pea Stone, Sand, Loam4.6%5.00 2432430.2 0 0Feasible to Meet Desired ISR : WQV Ratio?NO5.50 243243 0 24 24 ‐> Result = unsuccessful6.00 243243 0 0 24 ‐> Try sizing BMP for 0.3" design stormTotal Pea Stone, Sand, and Loam Storage Volume 49Design for 0.3" Design Storm Volume (DSV)1,2766.00 131131100Total Available Surface Storage (cf)3866.50 204168 1 84 84Feasible to Store DSV?No7.00 361283 1 141 225 1,2767.50 283322 1 161 386 146Total Surface Storage Volume 386 25.0%11.4%Feasible to Meet Desired ISR : DSV Ratio?NoElevation (ft) Area (sf)Avg Surface Area (sf)Void SpaceIncremental Storage (cf)AccumulatedStorage (cf) ‐> Result = unsuccessful; therefore size to max extent practical ‐> Try for sizing to 1" design storm5.50470100Design for 0.1" Sediment Forebay Volume6.009571136 36 4256.506379140 75Total Available Surface Storage (cf)917.00032116 91Feasible to Store DSV?No7.500010 91 ‐> Result = unsuccessful; therefore size to max extent practicalTotal Subsurface Storage Volume 91Desired ISR : WQV RatioActual ISR : WQV RatioJob #Calculated By:Checked By:Gravel Bioretention CellSubsurface (assume 0.3 void ratio for crushed stone, 0.2 for pea stone)Desired 1" WQV (cf)0.1" Storage (cf)Surface (assume unrestricted voids)Desired 1" WQV (cf)Sediment ForebaySubsurface (assume 0.3 void ratio for crushed stone, 0.2 for pea stone)Actual ISR : DSV RatioDesired ISR : DSV RatioAvailable Internal Storage Reservoir, ISR (cf)0.3" DSV (cf)0.3" DSV (cf)
Job # 317‐3‐6 Gleason Ave. Yarmouth, MA
Calculated By: NC 3/9/2018
Checked By:
Cut Area
(sf)
Average
Cut Area
(sf)
Cut
Volume
(cy)
Fill Area
(sf)
Average
Fill Area
(sf)
Fill
Volume
(cy)
Net Change at
Each
Elevation (cy)
Cut / Fill
3.0 to 3.5 243 243.0 4.5 0.0 0.0 0.0 4.5 CUT
3.5 to 4.0 243 243.0 4.5 0.0 0.0 0.0 4.5 CUT
4.0 to 4.5 243 243.0 4.5 0.0 0.0 0.0 4.5 CUT
4.5 to 5.0 243 243.0 4.5 0.0 0.0 0.0 4.5 CUT
5.0 to 5.5 243 262.0 4.9 0.0 0.0 0.0 4.9 CUT
5.5 to 6.0 281 321.5 6.0 60.0 124.5 2.3 3.6 CUT
6.0 to 6.5 362 378.5 7.0 189.0 292.0 5.4 1.6 CUT
6.5 to 7.0 395 264.8 4.9 395.0 192.5 3.6 1.3 CUT
7.0 to 7.5 337 221.3 4.1 375.0 187.5 3.5 0.6 CUT
7.5 to 8.0 270 163.5 3.0 0.0 0.0 0.0 3.0 CUT
7.0 to 8.5 57 57.0 3.2 0.0 0.0 0.0 3.2 CUT
51 15
Note: cut/fill quantities associated with installation of drainage infrastructure and piping is not included above, as this work is considered subsidiary to drainage
work.
Elevation
Cut Volume (cy) Fill Volume (cy)
Elevation Cut‐Fill Quantity Sheet ‐ Grading
No. Watershed Name Landuse ID LanduseArea(acres)% ImperviousImpervious Area (sf)Runoff(in)Pretreatment (0.1"/ Imp. acre) cfTreatment (1"/ Imp. acre) cfAnnual Runoff (cf)Annual TP (lbs)Annual TN (lbs)1 Gleason Ave 6 Residential-Med. Density 4.40 32 61,332 14.3 511 5,111 228,358 1.6 31.3Total4.4061,332 511 5,111 228,358 1.6 31.3Landuse1Landuse ID(used for v-lookup)% Impervious(C) TP (mg/l)(C) TN (mg/l)Commercial 1 85 0.15 2.97Forested 2 1.6 0.008 1.78Open Urban Land 3 2.8 0.008 1.74Residential-High Density 4 44 0.153 2.2Residential-Low Density 5 19 0.035 2.2Residential-Med. Density 6 32 0.112 2.2Industrial 772 0.1353.97Paved Roadway/Parking Lot 8 100 0.432 1.4Dirt Roadway/Parking Lot 9 80 0.432 1.4Institution 10 60 0.23 2.11 High density residential (<1/4 acre lots); Medium density residential (1/4 to 1/2 acre lots); Low density residential (>1 acre lots); Multifamily (>7 dwellings per acre).Annual Rainfall 47 inches; user specifiedPj0.9 %; defaultSanding Rate 500 lbs/acre; defaultYesSanding Applications 10 times/year; defaultNoReferences:Pitt, Robert. (2004, February 16). The National Stormwater Quality Database (NSQD, version 1.1). Retrieved July 22, 2005 from the World Wide Web: http://unix.eng.ua.edu/~rpitt/Research/ms4/Paper/recentpaper.htmThe New York Stormwater Management Design Manual Appendix A. Retrieved July 22, 2005 from the World Wide Web: http://www.dec.state.ny.us/website/dow/toolbox/simple.pdf The Simple Method to Calculate Urban Stormwater Loads. Retrieved July 22, 2005 from the World Wide Web: http://www.stormwatercenter.net/monitoring%20and%20assessment/simple%20meth/simple.htmPollutant Loading Formulas (Simple Method Equations):TP, TNL = 0.226 * R * C * AR = P * Pj * RvWhere: Where:L = Annual Load (lbs) R = Annual Runoff (inches)R = Annual Runoff (inches) P = Annual Rainfall (inches)C = Pollutant Concentration (mg/l) Pj = % of rainfall events producing runoffA = Area (acres) Rv = Runoff Coefficient = 0.05+0.9 * Ia0.226 = Unit Conversion Factor Ia = Impervious Fraction (%)Model Entered By:Date: Signature: Date Accepted:Model Reviewed by:Date: Signature: Date Accepted:Model Evaluated by:Date: Signature: Date Accepted:Modified Simple Method - Pollutant Reduction ModelResidential-Med. DensityResidential-Low DensityInstitutionRoadway/Parking LotPollutant Loading Estimates CommercialLanduseOpen Urban LandForestedDirt Roadway/Parking LotYarmouth - Gleason AvenueIndustrialResidential-High Density
Pollutant Reduction Estimates No. Watershed Name BMP ID BMP TypeBMP Drainage Area (acres)TP Removal (%)TN Removal (%)Annual TP Removed (lbs)Annual TN Removed (lbs)BMP Volume (cf) = 386 % of N in First Flush Runoff = 40%BMP Sized to Hold x% of First Flush Runoff = 30%1 Gleason Ave 6 Deep Sump Catch Basin 4.40 14.0% 0.0% 0.2 0.01 Gleason Ave 8 Subsurface Gravel Wetlands 4.40 99.0% 57.0% 0.5 2.1Total4.40 BMP Total 0.5 2.1BMP IDTP Removal (%)TN Removal (%)1 82% 33%2 74% 25%3 33% 0%4 82% 0%5 81% 0%6 14% 0%7 98% 0%8 99% 57%References:1Comparative Pollutant Removal Capability of Stormwater Treatment Practices, Technical Note #95 from Watershed Protection Techniques. 2(4): 515-520, Article 64. Retrieved July 22, 2005 from the World Wide Web: http://www.stormwatercenter.net/Practice/64-Comparative%20Pollutant%20Removal.pdf2Choi, J & Engel, B. Urban BMPs and Cost Estimation, Structural BMP Expected Pollutant Removal Efficiency & Median Event Mean Concentration for Urban Land Uses. US EPA. (1993) Handbook Urban Runoff Pollution and Control Planning. Retrieved July 22, 2005 from the World Wide Web: http://danpatch.ecn.purdue.edu/~jychoi/ubmp0/emc2.htm3Massachusetts Nonpoint Source Pollution Management Manual. Retrieved October 19, 2006 from the World Wide Web. Web: http://projects.geosyntec.com/NPSManual/4Pennsylvania Stormwater Best Management Practices Manual, Chapter 6 - Structural BMPs. Retrieved October 18, 2006 from the World Wide Web. Web: http://www.starkenvironmental.com/downloads/PADEP.pdf5University of New Hampshire Storwater Center. 2012 Biennial Report. Web: https://www.unh.edu/unhsc/sites/unh.edu.unhsc/files/docs/UNHSC.2012Report.10.10.12.pdfModel Entered By:Date: Signature: Date Accepted:Model Reviewed by:Date: Signature: Date Accepted:Model Evaluated by:Date: Signature: Date Accepted:Quantity of Pollutant RemovedDetention PondRetention PondBMP TypeModified Simple Method - Pollutant Reduction ModelSurface Sand FilterBerm SwaleDeep Sump Catch BasinVegetated SwaleStone SwaleBMP Removal EfficiencyYarmouth - Gleason AvenueSubsurface Gravel WetlandsSurface Sand FilterDeep Sump Catch BasinBerm SwaleSubsurface Gravel WetlandsBMP Type5Vegetated SwaleUse & Copyright of Materials:These materials are copyrighted by Comprehensive Environmental Inc. (CEI). CEI hereby authorizes the limited copying and use of these publications by readers as long as CEI is fully referenced and credited with the information. Please reference as follows: CEI. date of publication. "Name of Publication." Published by Comprehensive Environmental Inc, (800) 725-2550. Copyright "date". Note that this is a generic model and site specific engineering is always required for proper application of this material. CEI cannot be held responsible for errors or omissions that could occur in applying this model to specific sites. Retention PondDetention PondStone Swale
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GLEASON AVENUE BMP, YARMOUTH - EXISTING CONDITIONS, DEMOLITION, AND EROSION CONTROLSLEGENDWC-1WESNGleason Avenue, Yarmouth, MASEDIMENT FOREBAY, SURFACEBIORETENTION & SUBSURFACEGRAVEL WETLANDSSTORMWATER BMP
6.507.507.507.006.256.006.505.407.256.007.007.506.507.008.008.505.506.00WC-1WESNGLEASON AVE. BMP, YARMOUTH - PROPOSED CONDITIONSLEGENDPROPOSED DRAINAGE STRUCTURE DATANO. TYPERIM ELEV.INV. ELEV.ININV. ELEV.OUTBOTTOM7.78PROP CB5.68 (12")- -5.42 (12")1.894.42CB-27.96PROP CBCB-15.89 (12")PROP MHMH-17.505.42 (12")1.68CB-37.00PROP CB5.25 (12")3.005.68 (12")4.80 (2")Gleason Avenue, Yarmouth, MASEDIMENT FOREBAY, SURFACEBIORETENTION & SUBSURFACEGRAVEL WETLANDSSTORMWATER BMP
WD-1WESNGleason Avenue, Yarmouth, MASEDIMENT FOREBAY, SURFACEBIORETENTION & SUBSURFACEGRAVEL WETLANDSSTORMWATER BMP
LIMITOFWORKDIRECTIONOFFLOWWD-2WESNGleason Avenue, Yarmouth, MASEDIMENT FOREBAY, SURFACEBIORETENTION & SUBSURFACEGRAVEL WETLANDSSTORMWATER BMP
6.507.507.507.006.256.006.505.407.256.007.007.506.507.008.008.505.506.00WWESNGLEASON AVE. BMP, YARMOUTH - RESOURCE AREA BUFFER DISTURBANCESLEGENDPROPOSED DRAINAGE STRUCTURE DATANO. TYPERIM ELEV.INV. ELEV.ININV. ELEV.OUTBOTTOM7.78PROP CB5.68 (12")- -5.42 (12")1.894.42CB-27.96PROP CBCB-15.89 (12")PROP MHMH-17.505.42 (12")1.68CB-37.00PROP CB5.25 (12")3.005.68 (12")4.80 (2")Gleason Avenue, Yarmouth, MASEDIMENT FOREBAY, SURFACEBIORETENTION & SUBSURFACEGRAVEL WETLANDSSTORMWATER BMPPERMANENT WETLANDBUFFER IMPACTS(1,577 S.F.)TEMPORARY WETLANDBUFFER IMPACTS(325 S.F.)TOTAL 100' WETLAND BUFFERIMPACTS = 1,902 S.F.