Type of Report

Home , Hurricane Able (1952), Hurricane Carol (1953), Hurricane Dog (1950), Hurricane Edna, Hurricane Ernesto (2006), Hurricane Esther

Notice of Intent Application

April 3, 2018

Subject Property 33 Madaket Road Map 41, Parcel 409 Nantucket, Massachusetts

Applicant/Property Owner Hans Dalgaard 65 Surfside Road Nantucket, MA 02554

LEC Environmental Consultants, Inc.

12 Resnik Road, Suite 1 Plymouth, MA 02360 508-746-9491 508-746-9492 fax

www.lecenvironmental.com

PLYMOUTH, MA WAKEFIELD, MA WORCESTER, MA RINDGE, NH

April 3, 2018

Email/Overnight Mail

Nantucket Conservation Commission 2 Bathing Beach Road Nantucket, MA 02554

Re: Notice of Intent Application [LEC File #: BrEI\17-237.01] 33 Madaket Road Map 41, Parcel 409 Nantucket, Massachusetts

Dear Members of the Commission:

On behalf of the Applicant, Hans Dalgaard, LEC Environmental Consultants, Inc., (LEC) is submitting this Notice of Intent (NOI) Application for the proposed construction of a single-family dwelling and appurtenances on the above-referenced property. Proposed work activities occur within the 100-foot Buffer Zone to a Bordering Vegetated Wetlands protected under the Massachusetts Wetlands Protection Act (M.G.L., c. 131, s. 40), its implementing Regulations (310 CMR 10.00), and the Town of Nantucket Bylaw (Chapter 136) and Wetlands Protection Regulations. Details of the proposed project are depicted on the Proposed Site Plan, prepared by Bracken Engineering, Inc., dated March 30, 2018.

Enclosed please find the following checks made payable to the Town of Nantucket: Two Hundred Sixty- Two Dollars and Fifty Cents ($262.50) for the town portion of the WPA filing fee; Two Hundred Dollars ($200.00) for the Town Consultant fee; and Twenty-Five Dollars ($25.00) for the Bylaw fee. A check made payable to The Inquirer and Mirror ($291.40) has also been submitted for the legal advertising fee. The state portion of the WPA filing fee ($237.50) have been forwarded to the DEP Lockbox.

Thank you for your consideration of this Application. We look forward to meeting with you at the April 25, 2018 Public Hearing to discuss the project further. If you have any questions or require additional information, please do not hesitate to contact me.

Sincerely, LEC Environmental Consultants, Inc.

Brian T. Madden Wildlife Scientist cc: DEP SERO; Hans Dalgaard; Bracken Engineering, Inc.

Table of Contents

i. WPA Form 3 – Notice of Intent ii. WPA Appendix B – Wetland Fee Transmittal Form iii. Copy of Filing Fees iv. Affidavit of Service v. Letter to Abutters vi. Abutter Notification Form vii. Certified List of Abutters

Wetland Resource Area Analysis and Report

1. Introduction 1

2. General Site Description 1 2.1 Flood Hazard Area Designation 2 2.2 Natural Heritage and Endangered Species Program Designation 2

3. Wetland Resource Area Descriptions 2 3.1 Bordering Vegetated Wetland 2 4. Proposed Project 3

5. Waiver Request 4

6. Summary 5

Literature Referenced

Appendices

Appendix A Locus Maps Figure 1: USGS Topographic Map Figure 2: Aerial Orthophoto Figure 3: FEMA Flood Insurance Rate Map Figure 4: NHESP Map

Appendix B Photographs

Appendix C Proposed Site Plan, Prepared by Bracken Engineering, Inc., Dated March 30, 2018

Massachusetts Department of Environmental Protection Provided by MassDEP:

Bureau of Resource Protection - Wetlands MassDEP File Number WPA Form 3 – Notice of Intent Document Transaction Number Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Nantucket and the Town of Nantucket Wetlands Bylaw Chapter 136 City/Town A. General Information

1. Project Location (Note: electronic filers will click on button to locate project site): 33 Madaket Road Nantucket 02554 Important: a. Street Address b. City/Town c. Zip Code When filling out forms on the 41°16’54.30”N 70°06’51.48”W computer, use Latitude and Longitude: d. Latitude e. Longitude only the tab key 41 409 to move your cursor - do not f. Assessors Map/Plat Number g. Parcel /Lot Number use the return key. 2. Applicant: Hans Dalgaard a. First Name b. Last Name

c. Organization 65 Surfside Road d. Street Address Note: Nantucket MA 02554 Before e. City/Town f. State g. Zip Code completing this form consult [email protected] your local h. Phone Number i. Fax Number j. Email Address Conservation Commission 3. Property owner (required if different from applicant): Check if more than one owner regarding any municipal bylaw or ordinance. a. First Name b. Last Name

c. Organization

d. Street Address

e. City/Town f. State g. Zip Code

h. Phone Number i. Fax Number j. Email address

4. Representative (if any): Brian Madden a. First Name b. Last Name LEC Environmental Consultants, Inc. c. Company 12 Resnik Road, Suite 1 d. Street Address Plymouth MA 02360 e. City/Town f. State g. Zip Code 508-746-9491 508-746-9492 [email protected] h. Phone Number i. Fax Number j. Email address

5. Total WPA Fee Paid (from NOI Wetland Fee Transmittal Form):

$500.00 $237.50 $262.50 a. Total Fee Paid b. State Fee Paid c. City/Town Fee Paid

wpaform3.doc • rev. 2/8/2018 Page 1 of 9

Massachusetts Department of Environmental Protection Provided by MassDEP:

6. General Project Description: Proposed construction of a single-family dwelling and appurtenances within the 100-foot Buffer Zone

to BVW.

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)? If yes, describe which limited project applies to this project. (See 310 CMR 1. Yes No 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: Nantucket a. County b. Certificate # (if registered land) 1611 178 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.

wpaform3.doc • rev. 2/8/2018 Page 2 of 9

Notice of Intent Application 33 Madaket Road Map 41, Parcel 409 Nantucket, MA

1. Introduction

On behalf of the Applicant, Hans Dalgaard, LEC Environmental Consultants, Inc., (LEC) is submitting this Notice of Intent (NOI) Application for the proposed construction of a single-family dwelling and appurtenances at 33 Madaket Road. Proposed work activities occur within the 100-foot Buffer Zone to Bordering Vegetated Wetlands (BVW) protected under the Massachusetts Wetlands Protection Act (M.G.L., c. 131, s. 40), its implementing Regulations (310 CMR 10.00), and the Town of Nantucket Bylaw (Chapter 136) and Wetlands Protection Regulations (collectively, the Bylaw). The Applicant is proposing to enhance the 25-foot Buffer Zone and relocate proposed structures further away from the BVW in comparison to the existing barn within the 50-foot Buffer Zone. While not located within high groundwater, proposed structures will not maintain the two (2) feet of separation to high groundwater, as stipulated under the Bylaw. Consequently, waivers are concurrently requested.

The BVW boundary was approved through a Determination of Applicability issued by the Nantucket Conservation Commission on September 6, 2017.

The following NOI Application provides a description of the existing site conditions, Wetland Resource Areas, proposed project, and mitigating measures proposed to protect the interests and values of the Resource Areas identified within the above-referenced statutes. Details of the proposed project are depicted on the Proposed Site Plan, prepared by Bracken Engineering, Inc., dated March 30, 2018 (Appendix C).

2. General Site Description

The 1.18± acre subject parcel is located north of Madaket Road between New Lane (east) and Crooked Lane (west) on Nantucket (Appendix A, Figures 1 and 2). Single-family residential homes exist to the east and west. The site itself contains a barn, chicken coop, and horse paddock extending off-site to the north and northeast. A small, pervious parking area is located within the southern portion of the site, adjacent to Madaket Road. Topography descends mildly to the north from Madaket Road before flattening at the BVW boundary.

BVW extends across the horse paddock area north of the barn. Upland vegetation is composed of miscellaneous grasses, most notably fescue (Festuca spp.), white clover (Trifolium repens), and common plantain (Plantago major) within the paddock area. Japanese knotweed (Fallopia japonica) surrounds the chicken coop and autumn olive (Elaeagnus umbellata) is present around the parking area.

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PLYMOUTH, MA WAKEFIELD, MA WORCESTER, MA RINDGE, NH Notice of Intent Application 33 Madaket Road Map 41, Parcel 409 Nantucket, MA

2.1 Floodplain Designation

According to the June 9, 2014, Federal Emergency Management Agency Flood Insurance Rate Map for the Town of Nantucket (25019C0086G), the subject parcel is primarily located within Zone X, Areas determined to be outside the 0.2% annual chance flood (Appendix A, Figure 3). The northwestern portion of the site within the BVW is mapped as Zone X, Areas of the 0.2% annual chance flood.

2.2 Natural Heritage and Endangered Species Program Designation

According to the 14th edition of the Massachusetts Natural Heritage Atlas (effective August 1, 2017) published by the Natural Heritage & Endangered Species Program (NHESP), the subject parcel is not located within an Estimated Habitat of Rare Wildlife and Priority Habitat of Rare Species (Appendix A, Figure 4).

3. Wetland Resource Area Descriptions

Wetland Resource Areas located on-site include Bordering Vegetated Wetland (BVW)/Vegetated (Freshwater) Wetland as described below.

3.1 Bordering Vegetated Wetland / Vegetated (Freshwater) Wetland

Bordering Vegetated Wetlands (BVW) are defined in 310 CMR 10.55(2) as freshwater wetlands which border on creeks, rivers, streams, ponds, and lakes. In these areas soils are saturated and/or inundated such that they support a predominance of wetland indicator plants. The boundary of BVW is the line within which 50% or more of the vegetational community consists of wetland indicator plants and saturated or inundated conditions exist.

A vegetated Freshwater Wetland is defined within Section 1.02 of the Nantucket Wetlands Protection Regulations as a wet meadow, freshwater marsh, swamp, bog, pond, lake, creek, or stream; an area of low topography where ground water, flowing water, standing surface water, or ice provides a significant part of the supporting substrate for a plant community for at least five months a year; characterized by emergent and submergent plant communities in inland waters; and/or where depth to high groundwater is within 18 inches of the ground surface, and/or exhibits hydric soil characteristics and includes that portion of any inland bank which touches any inland waters. Freshwater wetlands are not defined to include drainage facilities constructed to include wetland vegetation as treatment for stormwater runoff.

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PLYMOUTH, MA WAKEFIELD, MA WORCESTER, MA RINDGE, NH Notice of Intent Application 33 Madaket Road Map 41, Parcel 409 Nantucket, MA

The northern portion of the horse paddock area is occupied by BVW. While mostly occupied by shorn grasses and common pursulane (Portulaca oleracea), iris (Iris spp.), sensitive fern (Onoclea sensibilis), Joe-Pye weed (Eupatorium purpureum), slender fragrant goldenrod (Euthamia tenuifolia), and cattails (Typha spp.) are observed within the northern portion of the site along with patches of winterberry (Ilex verticillata).

As stated above, the BVW boundary was approved through a Determination of Applicability issued by the Nantucket Conservation Commission on September 6, 2017.

4. Proposed Project

The proposed project involves the removal of the existing barn and construction of a 2,704± square-foot dwelling with dry laid stone patios and a 16’ x 38’ pool, as depicted on the Proposed Site Plan, along with reconfiguration of the pervious driveway, regrading, utilities, and landscaping. No work occurs within the 25-foot Buffer Zone, aside from enhancement measures (see below). The dwelling will tie into municipal water and sewer lines within Madaket Road.

The proposed dwelling is located outside of the 50-foot Buffer Zone and its crawl space foundation (bottom footing) will maintain a 1-foot separation to high groundwater. A 5- foot tall crawlspace storage area will be situated within the northwestern portion of the dwelling (Floor: El. 14) and a 6-foot tall crawlspace mechanical room will be located within the front of the dwelling (Floor: El. 13), straddling the 100-foot Buffer Zone. The crawlspace storage area will be accessed via a set of side stairs, while the mechanical room will have interior access. Both storage areas will be situated on monoslabs. A perimeter drain system will provided. A footing drain will extend northerly from the house, becoming perforated away from the structure to dissipate any minimal discharge, while balancing wetland hydrology. Crushed stone will be placed at the outlet. Roof and pool patio runoff will be discharged to subsurface infiltration systems. Proposed regrading around the dwelling is depicted on the Proposed Site Plan.

The proposed dry laid patio is also located upgradient of the 50-foot Buffer Zone; however, a small portion of the pool will occur within 50 feet of the BVW. Considering the existing site topography descending from Madaket Road, a 4± foot tall retaining wall and infinity pool edge will define the northerly boundary of the stone patio and pool. A set of stairs will extend to the lawn and fieldstone steps will connect to a lower round dry laid stone patio sitting area.

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PLYMOUTH, MA WAKEFIELD, MA WORCESTER, MA RINDGE, NH Notice of Intent Application 33 Madaket Road Map 41, Parcel 409 Nantucket, MA

The construction footprint will be defined by erosion control barriers to protect the downgradient BVW and enhanced 25-foot Buffer Zone (see below).

5. Waiver Request

The Applicant is respectfully requesting Waivers under Section 1.03 F.3. a) and c) of the Nantucket Wetlands Protection Regulations for proposed enhancement of the 25-foot Buffer Zone, structural work within the 50-foot Buffer Zone, and the two-foot separation to high groundwater for the proposed structures. Considering that the project largely involves the conversion of lawn within the 25-50-foot Buffer Zone, it does not appear that a waiver from the 50% alteration threshold is necessary. However, if required, the site enhancements will significantly improve the Buffer Zone.

Section 1.03 F.3.a) states that the Commission may grant a waiver from these regulations when the Commission finds that, given existing conditions, the proposed project will not adversely impact the interests identified in the Bylaw and there are no reasonable conditions or alternatives that would allow that project to proceed in compliance with the regulations. Section 1.03 F.3.c) states that the Commission may grant a waiver from these regulations when the Commission finds that a project will provide a long-term net benefit/improvement to the resource area, provided any adverse effects are minimized by carefully considered conditions.

Proposed work has been designed to enhance site conditions to benefit the downgradient BVW. Under existing conditions, approximately 238± sf of the barn occurs within the 50-foot Buffer Zone. At its closest point, the existing structural setback is 36± linear feet. Furthermore, a chicken coop immediately abuts the BVW boundary and the 25-foot Buffer Zone is occupied by bare ground conditions or grasses within the fenced-in horse paddock abutting the barn.

In order to improve site conditions, the Applicant is proposing to increase the structural setback and decrease the structural footprint within the 50-foot Buffer Zone. The proposed dwelling is located outside the 50-foot Buffer Zone, but a small portion of the pool and associated infinity edge (213± sf) occur within 50 feet of the BVW. The structural setback has been increased from 36± to 44± linear feet. The proposed project results in a decrease of 25± sf within the 50-foot Buffer Zone.

The proposed infinity edge minimally encroaching into the 50-foot Buffer Zone eliminates the need for pool fencing closer to the BVW boundary and allows for greater separation between the pool and high groundwater. As depicted on the plan, high

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PLYMOUTH, MA WAKEFIELD, MA WORCESTER, MA RINDGE, NH Notice of Intent Application 33 Madaket Road Map 41, Parcel 409 Nantucket, MA

groundwater has been established at El. 12.9. The bottom of the pool and crawlspace foundations, including the storage areas, are proposed to be above high groundwater. Therefore, excavation will not encounter high groundwater and dewatering is not anticipated. However, if necessary, excess water will be pumped to a Dirt Bag™ located outside the 50-foot Buffer Zone encircled by straw bales. The proposed crawlspace and pool will not result in an adverse impact on the downgradient BVW and alternative designs would include additional storage structures (e.g. shed) and a pool fence within the 50-foot Buffer Zone, closer to the BVW.

The Applicant is proposing to enhance the 25-foot Buffer Zone currently occupied by the chicken coop, bare ground conditions, and grasses within the horse paddock. Firstly, the chicken coop will be removed and properly disposed of off-site. Proposed native highbush blueberry (Vaccinium corymbosum), bayberry (Morella pensylvanica), arrowwood (Viburnum dentatum), and/or sweet pepperbush (Clethra alnifolia) shrubs will then be planted. Clean organic loam will be introduced, as necessary, and a native fescue seed mix will be applied within bare ground conditions. Temporary drip line irrigation will be used to aid in seed mix/plant establishment. The Proposed Buffer Zone Enhancement Area totals 3,090± sf.

In summary, the proposed project will not adversely impact the interests identified in the Bylaw. Increasing the structural setback to the BVW, decreasing the structural footprint within the 50-foot Buffer Zone, and enhancing the 25-foot Buffer Zone will serve to improve site conditions, resulting in a long-term net benefit/improvement to the BVW. The Applicant is consequently respectfully requesting a Waiver under Section 1.03 F.3. a) and c) of the Nantucket Wetlands Protection Regulations.

6. Summary

On behalf of the Applicant, Hans Dalgaard, LEC is submitting this NOI Application for the proposed construction of a single-family dwelling and appurtenances. Proposed work activities occur within the 100-foot Buffer Zone to BVW protected under the Massachusetts Wetlands Protection Act (M.G.L., c. 131, s. 40), its implementing Regulations (310 CMR 10.00), and the Town of Nantucket Bylaw (Chapter 136) and Wetlands Protection Regulations. Waivers are concurrently requested for the structural work within the 50-foot Buffer Zone (square footage reduction and increased setback), 2- foot separation to high groundwater, and enhancement of the 25-foot Buffer Zone. As proposed, the project represents an improvement over existing conditions to benefit the BVW.

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PLYMOUTH, MA WAKEFIELD, MA WORCESTER, MA RINDGE, NH Literature Referenced

Federal Emergency Management Agency Flood Insurance Rate Map, Town of Nantucket (25019C0086G) effective June 9, 2014.

https://websoilsurvey.sc.egov.usda.gov/App/HomePage.htm

Massachusetts Natural Heritage Atlas, 14th Edition. Natural Heritage & Endangered Species Program, Massachusetts Division of Fisheries and Wildlife, Route 135, Westborough, MA 01581, http://maps.massgis.state.ma.us/PRI_EST_HAB/viewer.htm..

Massachusetts Wetlands Protection Act (M.G.L. c. 131, §. 40) and its implementing Regulations (310 CMR 10.00), www.state.ma.us/dep.

Sorrie, B. and Dunwiddie, P. 1996. The Vascular and Non-Vascular Flora of Nantucket, Tuckernuck, and Muskeget Islands. Massachusetts Audubon Society, Massachusetts Natural Heritage and Endangered Species Program, Nantucket Maria Mitchell Association, and The Natural Conservancy.

Town of Nantucket Bylaw (Chapter 136) and Wetlands Protection Regulations.

United States Department of Agriculture, Soil Conservation Service, in cooperation with Massachusetts Agricultural Experiment Station, Soil Survey for Nantucket County, Massachusetts, issued June 1979. https://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx

PLYMOUTH, MA WAKEFIELD, MA WORCESTER, MA RINDGE, NH

LOCUS

Images from MassGIS 1:25,000 USGS Topographic Maps April 2001

Figure 1: USGS Topographic Map 33 Madaket Road Environmental Consultants, Inc. Nantucket, MA ± Plymouth, MA 508.746.9491 0 250 500 Feet www.lecenvironmental.com August 16, 2017

GROVE LANE

MEADOW LANE

LOCUS

MADAKET ROAD

DUKES ROAD

Office of Geographic and Environmental Information (MassGIS), Commonwealth of Massachusetts, Executive Office of Environmental Affairs

MassGIS USGS Ortho Imagery (2014) VESTAL STREET

Figure 2: MassGIS Orthophoto 33 Madaket Road Environmental Consultants, Inc. Nantucket, MA ± Plymouth, MA 508.746.9491 0 100 200 Feet www.lecenvironmental.com August 16, 2017

2014 Aerial Orthophoto acquired from the Office of Geographic Information (MassGIS) website.

LOCUS

Estimated Habitat of Rare Wildlife (2017) Priority Habitat of Rare Species (2017)

0400 800 1,600 Feet

Figure 4: NHESP Map 33 Madaket Road LEC Environmental Consultants, Inc. ± Plymouth, MA 508.746.9491 Nantucket, Massachusetts March 29, 2018 www.lecenvironmental.com

Photograph 1: Northerly view of existing barn and horse paddock area (7/26/18).

Photograph 2: Southerly view of existing barn and horse paddock area (7/26/18).

Richard Wolfe and Christopher Wolfe March 20, 2018 Commonwealth Pioneers, PO Box 6300, Williamsburg, Va 23188

Subject: Response to 33 Madaket Road Notice of Intent (NOI) to the Nantucket Conservation Commission date April 3, 2018.

Request: Denial of waiver of 24” water table minimum.

Issues:

Objection to proposed project on the following grounds:

1.) Violates minimum 24” water table requirement 2.) Collects and relocates water flow, affecting the adjoining property and buildings 3.) Harmful effect on adjoining property 4.) Overwhelms site, encroachment on side set‐backs 5.) Elevation of infinity pool and spa encroach on the privacy between lots. The pool area will be elevated 4ft above grade, adding the height of a normal man raises the sight line to approx. 10ft above grade. Effectively allowing people congregating on the patio to see eye to eye with the people residing in the 2nd floor of 31. Remediation with 12ft x 3 deep staggered conifer trees to create a solid separation between properties, is a necessity. Noise mitigation should also be a consideration. 6.) Patio and elevated pool encroach on the 10ft set back, patio set back is ~ 5.5ft. 7.) Patio and pool are permanent structures and should be included in the wetlands encroachment and 24” minimum water table requirement. The test pit and bore samples were taken at least 1ft above grade of these extended additions to the structure.

Summary:

The land at 33 Madaket is unable to accommodate the structure proposed in this NOI.

The original plan (that we were aware of) was to add an “L” addition to the existing barn, keeping the project in character with the land and historical purpose.

The proposal today is overwhelming, a gross overuse of the plot and out of character with the environment.

The proposed mitigation solution to obtain the waiver of the minimum 24” water table level, will result in harm to adjacent properties with destructive effects.

Using the LEC report and plan, we estimate that 1 inch of rain will exceed the capacity of the proposed eastern reservoir, and 3 inches of rain will put nearly 5000 gallons of rainwater over capacity into the soil at this reservoir. The eastern reservoir is located approx. 4 ~ 6 ft up hill and 22 ft from the 31 Madaket crawl space.

There is a reason this land has been used for grazing horses and not buildings. The complications of overdevelopment of this plot lead to complications and consequences from the mitigation plan.

We request a denial of waiver based on the facts defined in this response.

Discussion:

We received notification by registered mail on Monday April 9th, 6 days past mailing of notifications. LEC had email addresses of this abutter and waited until an April 9th telephone acknowledgement of receipt and request to send soft copy by email, placing this abutter at a time disadvantage.

The proposed project is like no other project in the immediate vicinity. Including new construction on the south side of Madaket Road, all other properties have comfortable set‐backs, providing a degree of privacy for each property and between properties. This project is situated on the land in such a way to overwhelm the available space, in length, width and height (Exhibit 1).

The site plan includes two roof and patio run‐off drains which will collect and place 5100 gallons per inch of rain, an overwhelming amount of water, into these two drain/reservoirs, with approx. 2/3 directed to the eastern drain/reservoir (from LEC design, ½ roof and ALL of the patio drains to the eastern drain/reservoir), which will be approx. 4 ft above 31 Madaket ground level and 22 ft away from the 31 Madaket crawl space, which descends approximately 40 inches below grade to a gravel bed. Spring 2018, 31 Madaket had experienced a continuous 15” of water in the crawl‐space with the dual problem of (a) pumps not able to keep up with the water flow and (b) no effective place to move the water to. (Exhibits 1, 3,4, 6)

From LEC design, page 36 of 36, ½ roof and ALL of the patio drains to the eastern drain/reservoir, approx. 2/3 of 5100 gallons or 3200 gallons. By routing this 3200 gals/inch of rain into a 212 cubic Ft dry‐well (1600 gallons), situated approx. 4~6 ft up hill and 21 ft from the foundation of 31 Madaket, this water flow will drain directly into 31 Madaket. (Exhibits 1, 3, 4, 6)

From the bore testing, the water‐table at the test pit is between 17” ~ 20” below surface ground level. We assume the test pit and bore sample were taken at the same location, and that location is approx. 1ft above grade at 31 Madaket. This implies the water table, at the time of this test pit/boring, on the 31 Madaket side, was 5inch ~ 7inch below grade. This test pit was dug approximately at the north eastern corner of the proposed house, with the elevated patio and pool extending an additional 30 ft beyond this point further into the wet lands. (Exhibit 2, 5).

During the recent tropical storm (TS) Jose, the rain fall on Nantucket was 6.4 inches with 3 inches falling within a 2 hr period. This level of rainfall would place approximately 9600 gallons of water into the eastern dry‐well, overwhelming its capacity of 1600 gallons by a factor of 6. (Exhibits 6 & 10).

Regardless of whether the drainage system is amended to hold the volume of “Peak Rainfall,” the ground would be saturated and unable to absorb this water volume, the proposed solution will result in flooding that will directly affect 31 Madaket, rendering the “solution” to becoming the source of the problem.

Exhibits:

Exhibit 1: Merged and annotated site plan: This document shows the relationship of the two properties, the location of the two buildings, drainage system and permanent structures.

Exhibit 2: Comparative Slope: This image shows the comparative slope of the land between 31 and 33 Madaket.

Exhibit 3: Merged Elevation: This image shows the relationship of the proposed easterly drainage system and its elevation, relative to grade level at 31 Madaket. The base of the easterly drainage system will be above the 31 Madaket grade by 1.5 ft. to 3.5 ft (bottom to top of chambers).

Exhibit 4: Detailed Elevation diagram: This image shows the relationship between the proposed easterly drainage system, 31 Madaket grade and the crawl space of 31 Madaket. Based on water level measurements within the crawl space, in March 2018 the water table rose to within 15 ~ 17” of grade at 31 Madaket.

Exhibit 5: Test Pit Elevation: This image shows the position of the test pit to adjacent ground level at 31 Madaket, note the test pit has a 1ft higher elevation to ground level at 31.

Exhibit 6: Baseline Calculations

Exhibit 7: Examples of New England Hurricanes & Tropical Storms (TS) of 21st Century (affecting Nantucket)

Exhibit 8: StormTech SC‐740 Chamber specification

Exhibit 9: Aerial View of 31 and 33 Madaket, showing overlay of proposed building on 33, existing buildings and proposed (33) building on 31, the “pond” and grazing meadows.

Exhibit 10: Boston Globe article on Tropical Storm (TS) Jose

Exhibit 11: Example List of New England Hurricanes (from Wikipedia)

Analysis of water volumes and associated Scenarios:

All data is calculated from the LEC NOI proposal and known volumetrics of water.

Scenario #1: 1” of rainfall, collected from 5100 sqft of surface area, will yield 3200 gallons of water into a reservoir. The proposed 33 Madaket design has 2 reservoirs with 1/3 directed to the western reservoir and 2/3 directed to the eastern reservoir, a distribution of 1056/2144 gallons. Based on the NOI application, the proposed drainage/reservoir(s) have a capacity of <1600 gallons each. From this evaluation, the system as designed would not accommodate a 1” rainfall, during a condition where the ground was already saturated. (Exhibit 6)

Scenario #2: 3” of rainfall, collected from 5100 sqft of surface area, will yield 9600 gallons of water into a reservoir. 2/3 directed to the eastern reservoir will distribute 6294 gallons into a reservoir with a 1600 gallon capacity, resulting in an overflow of 4694 gallons. During Tropical Storm (TS) Jose, Sept 2017, a total of 6.4 inches of rain fell on Nantucket during a 36 hr period, with 3 inches within a 2 hr period. Clearly the ground was 100% saturated at the time of the peak 3” rainfall, If this structure were in place, a resulting 6294 gallons would flow into a reservoir already at full capacity. (Exhibits 6 & 10).

In total, TS Jose deposited 6.4” of rain on Nantucket, a total of 19,074 gallons collected from the proposed roof and patio, with 2/3 distributed to the eastern reservoir, or 12,588 gallons, overflowing this reservoir by 10,989 gallons. (Exhibits 6 & 10).

We recognize that under normal conditions the ground will absorb the waterflow at a variable rate based on water table and saturation, the issue is the land and the proposed collection system, designed and presented to mitigate the affects on the land, will not sustain any condition where excessive rain occurs during a 24 hr period, in fact, it will collect and direct this water volume into the soil directly adjacent and up hill from the 31 Madaket principle building, resulting in heavy flooding in this building.

Due to the positional location of these two properties, and the adjacent location of the eastern drain/reservoir to 31 Madaket, this water flow problem is three dimensional, in that the overflow will descend from the eastern drain, affecting the height of the water table adjacent to 31 Madaket and move to the next lowest reservoir, being the crawl space at 31.

The proposal today is overwhelming, a gross overuse of the plot and out of character with the environment.

There is a reason this land has been used for grazing horses and not buildings. The complications of overdevelopment of this plot lead to complications and consequences from the mitigation plan.

We request a denial of waiver based on the facts defined in this response.

POND PROPOSED EXISTING PROPERTY AT PROPERTY AT 33 MADAKET RD. 31 MADAKET RD.

1. ECOPIED DRAWING FROM ORIGINAL SOURCE OF BRACKEN ENGINEERING, INC. PRIOR TO UPDATING.

A A SECTION A-A

_ MERGED AND ANNOTATED DRAWING TO SHOW EXIST. NOTE: 31 MADAKET RD AND 33 EQUIVALENT CHAMBER STORAGE OF MADAKET RD SITE PLANS _ 184_ CU.FT. (1376 GALLONS) POSITIONED 6' FROM PROPERTY LINE DATE: 4-20-18 EXHIBIT: 1 EXISTING PROPOSED PROPERTY AT SUBSURFACE DRAINAGE AT 31 MADAKET RD. 33 MADAKET RD.

DATE: 4-20-18 COMPARITIVE SLOPE DRAWING. EXHIBIT: 2 EXISTING PROPOSED PROPERTY AT SUBSURFACE DRAINAGE AT 31 MADAKET RD. 33 MADAKET RD. PROPOSED SUB SURFACE DRAINAGE SYSTEM: INSTALLED POSITION OF SC-740 SUB SURFACE DRAINAGE RESERVOIR CHAMBERS RELATIVE TO EXISTING GRADE LEVEL AT 31 MADAKET RD. CONFIGURATION: (2)FRONT X (2)REAR CONFIGURATION SHOWN PER PROPOSED 33 MADAKET SITE PLAN CHAMBER STORAGE: 1600 GALLONS TOTAL (BASED ON CIRCULAR CROSS SECTION EST.) REFERENCE: STORMTECH SC-740 DATASHEET CRITICAL PROBLEMS: 1. SYSTEM LOCATED ADJACENT AND VERTICALLY ABOVE 31 MADAKET RD. BASEMENT. 2. SYSTEM IS SEVERLY UNDERSIZED AND WILL FLOOD 31 MADAKET RD. PROPERTY DURING PEAK RAIN STORM CONDITIONS (SEE SHEET 4 OF 4). GRADE LEVEL AT 33 MADAKET RD. PROPOSED SC-740 3'-6" CHAMBERS

1'-6"

GRADE LEVEL AT 31 MADAKET RD.

MERGED ELEVATION DRAWING. DATE: 4-20-18 EXHIBIT: 3 NOTE: SECTION A-A 1. SECTION A-A AS VIEWED LOOKING SOUTH (SEE SHEET 1 OF 5) AS SHOWN ON MERGED 31 AND 33 MADAKET RD SITE PLAN DRAWING.

- 2ND FLOOR -

22 FT

16 FT GRADE LEVEL AT 33 MADAKET RD.

PROPOSED SUB SURFACE DRAINAGE RESERVOIR USING (4) STORMTECH SC-740 - RETAINING WALL - STORAGE CHAMBERS TOTAL STORAGE OF 1600 GALLONS - GROUND FLOOR -

3.5 FT

- GARDEN AREA -

GRADE LEVEL AT 1.5 FT 31 MADAKET RD. - BASEMENT CRAWL SPACE - WATER TABLE ROSE TO 15" 3.5 FT 15" ABOVE BASEMENT FLOOR GRAVEL BASEMENT FLOOR DURING MARCH 2018

DETAILED ELEVATION DIAGRAM DATE: 4-20-18 (NOT TO SCALE) EXHIBIT: 4 EXISTING PROPOSED PROPERTY AT SUBSURFACE DRAINAGE AT 31 MADAKET RD. 33 MADAKET RD.

ELEVATION LEVEL LINE A -A ELEVATION LEVEL LINE A -A (1 FT ABOVE GRADE) (CONTINUED)

TEST PIT LOCATION

A 1 FT HEIGHT ABOVE GRADE

TEST PIT ELEVATION DRAWING.

DATE: 4-20-18 EXHIBIT: 5 Baseline Calculations of Sub Surface Drainage System and impact to 31 Madaket Rd property.

Rainfall Roof and Patio Volume distributed to East Side Capacity of East Side Amount Over Item (Inches) Area (Sq. Ft.) Total Volume (Gallons) Drainage Reservoir (Gallons) Reservoir (Gallons) Capacity (Gallons) Comments

1 1.00 5100.00 3179.00 2098.14 1600.00 498.14 Only 1" of Rainfall puts the East Side Drainage System into an Overflow State

2 2.00 5100.00 6358.00 4196.28 1600.00 2596.28 Approaching Peak Rainfall conditions.

3 3.00 5100.00 9537.00 6294.42 1600.00 4694.42

4 4.00 5100.00 12716.00 8392.56 1600.00 6792.56

5 5.00 5100.00 15895.00 10490.70 1600.00 8890.70

6 6.00 5100.00 19074.00 12588.84 1600.00 10988.84 Total rainfall over 36 hrs Tropical Storm Jose duration, 6.4 inches

Notes and Assumptions:

1. Total Storage Volume of (4) StormTech SC-740 Chambers within Sub Surface Reservoir = Approx. 1600 Gallons 2. Total Rainfall headed to East Side Drainage System based on (2/3) of approx. Total Roof Area of 5100 Sq. Ft. (combined volume of the Roof + Patio, as stated on proposed 33 Madaket Site Plan). 3. Peak Rainfall Condition based on Tropical Storm Jose, Sept 2017 that dropped a total of 6.4 inches of rain on Nantucket, with 3" falling in a 2hr period. 4. At Peak Rainfall, due to high water table, land will be saturated, unable to absorb any additional drainage, leading to an overflow into the next available reservoir, the crawl space at 31 Madaket.

Calculations:

1. Total Volume = [Inches of Rainfall / (12 in/ft) X 5100 sq. ft.] X Conversion of (7.48 Gal/cu.ft.) Example for 3" of Rainfall: Total Volume = [3.0" / 12in/ft X 5100 sq. ft.] X 7.48 Gal/cu.ft.) = 9537 gals.

2. Volume distributed to East Side = Total Volume X .66 (Based on 2/3 of total water heading to East Side Drainage Reservoir) Example for 3" of Rainfall: 9537gals. X (.66) = 6294 gals.

3. Capacity of East Side Reservoir = [Chamber Volume of 53.5 cu.ft (based on 51.50" diameter circular cross section) X 7.48 gal/cu.ft.] X 4 (Qty of 4 chambers in resrvoir) Example for 3" of Rainfall: 53.5cu.ft X 7.48 Gal/cu.ft X 4 = 1600 gals.

4. Amount Over capacity = Volume distributed to East Side - East Side Reservoir Capacity Example for 3" of Rainfall: 6294 - 1600 = 4694 gals over capacity

EXHIBIT: 6 NE Hurricanes & Tropical Storms of 21st Century

Year Storm Rainfall 1999 TS Floyd 5 ~ 15 inches of rain 2001 TS Allison 7.2 inches of rain 2002 TS Hanna 1 inch of rain 2004 TS Bonnie 10 inches of rain 2004 H Jeanne light to heavy rain up to 7 inches on Nantucket 2005 H Cindy moderate rain, 3 inches 2007 TS Barry moderate rain, 3.2 inches 2008 H Kyle 7.15 inches of rain 2009 TS Danny 2 inches of rain on Nantucket 2017 TS Jose 6.4 inches on Nantucket, 3 inches within 2 hrs 2017 TS Philippe 5.5 inches

Examples of storm systems to impact New England and associated rainfall Source: Wikipedia, rainfall details are only those that are referenced in Wiki article.

Exhibit 7 Exhibit 8 pg 1 Exhibit 8, pg 2 DATE: 4-20-18 AERIAL VIEW DRAWING EXHIBIT: 9 Tropical Storm Jose dumps six inches of rain on Nantucket - The Boston... https://www.bostonglobe.com/metro/2017/09/21/ferry-service-nantucket...

JOHN TLUMACKI/GLOBE STAFF People watched the powerful surf hit Nauset Beach as high tide approached.

By Jake Johnson GLOBE CORRESPONDENT SEPTEMBER 21, 2017

Tropical Storm Jose had dumped a total of six inches of rain on Nantucket, with three inches falling in the space of a couple hours Thursday night, according to the National Weather Service.

1 of 5 4/20/2018, 9:14 AM Tropical Storm Jose dumps six inches of rain on Nantucket - The Boston... https://www.bostonglobe.com/metro/2017/09/21/ferry-service-nantucket...

Minor flooding was possible as a result of the downpour, the most significant impact since Jose started churning off the coast of Cape Cod and the Islands.

In Hyannis, one to two inches of rain had fallen, while Boston had only 1/4 of an inch, meteorologist Bill Simpson said.

Jose will continue to drift westward while weakening overnight and over the next two or three days, with winds dissipating from a peak of 58 mph in Nantucket Thursday afternoon.

“At this point, people should mostly be worried about rip currents on the beach - they should be taken seriously,” Simpson said.

The weather service also reported that several dozen trees had been damaged or felled due to the tropical storm winds Thursday, and advised that winds could continue to down “some branches and even a few unhealthy trees late this morning into this evening” throughout Eastern Massachusetts.

The Steamship Authority canceled ferry service to Nantucket for the entire day because of the weather conditions, said Bob Davis, general manager of the Steamship Authority.

On its website, the authority said it “expects trip cancellations Friday” to Nantucket due to Jose.

Ferry rides to Martha’s Vineyard are “expected to resume Friday on a trip-by-trip basis as soon as the wind and sea conditions improve,” the website said.

Minor coastal flooding is possible along the Massachusetts coast from Scituate to the bay side of Cape Cod and the Islands during high tide Thursday afternoon and night, according to the weather service.

Pockets of moderate flooding are expected on Nantucket and flooding concerns will

2 of 5 4/20/2018, 9:14 AM Tropical Storm Jose dumps six inches of rain on Nantucket - The Boston... https://www.bostonglobe.com/metro/2017/09/21/ferry-service-nantucket...

continue into Friday’s tide cycle, according to the weather service. Waters will continue to be rough, and potentially dangerous, into the weekend as Jose wears down, Simpson said.

Forecasters noted that Hurricane Maria may stay out to sea, or change course and head towards New England sometime next week. “Be sure to stay informed,’’ forecasters wrote.

NATIONAL WEATHER SERVICE

3 of 5 4/20/2018, 9:14 AM Tropical Storm Jose dumps six inches of rain on Nantucket - The Boston... https://www.bostonglobe.com/metro/2017/09/21/ferry-service-nantucket...

NATIONAL WEATHER SERVICE

4 of 5 4/20/2018, 9:14 AM Tropical Storm Jose dumps six inches of rain on Nantucket - The Boston... https://www.bostonglobe.com/metro/2017/09/21/ferry-service-nantucket...

NATIONAL WEATHER SERVICE

John R. Ellement of the Globe Staff contributed. Jake Johnson can be reached at [email protected].

5 of 5 4/20/2018, 9:14 AM GvsIr@tyhqu vphrXvxvrqvh u)rvxvrqvh tvxvGvfsfIrf@tyhqfu vphr!ufpr

A New England hurricane is a tropical cyclone originating in the Atlantic Ocean that affects the states of Connecticut, Rhode Island, Massachusetts, Vermont, New Hampshire, or Maine in the United States.

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Multiple intense hurricanes (Category 3+) hit New England in pre-Columbian times: between 1100–1150, 1300–1400 (1295–1407), and 1400–1450 (1404–1446), respectively.&'&'

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A landfall in New England occurs only if the center of the storm comes ashore in Maine, New Hampshire, Massachusetts, Rhode Island, or Connecticut as they all share a coastline. Tropical cyclones that made landfall outside of New England, but subsequently passed through the region, are excluded from this category. For example, the 1893 New York hurricane, Tropical Storm Doria of 1971, and Hurricane Irene of 2011 all made landfall in New York City, but failed to cross Long Island Sound and enter Connecticut along its coastline. In addition, other systems such as the 1876 San Felipe hurricane, 1888 Louisiana hurricane, 1893 Sea Islands hurricane, and Hurricane Able of 1952 all passed through New York, to the north of New York City, before entering New England.

A landfall is also distinct from a direct hit, in which the eyewall, or core of the highest winds, comes onshore, without the center of the storm moving ashore.&*'

New England hurricanes have made landfall on many occasions. Normally, due to cold SST's and high wind shear, hurricanes do not last long, so the ones that do make landfall are normally weak, with major hurricanes (Category 3 or higher) being rare.&*'

The following tables are a list of all tropical cyclones that have made landfall in New England since records began in 1851:

The 19th century saw a few notable storms. In 1869 an intense Category 3 hurricane struck Southeastern New England. Other hurricanes that made landfall include the Equinoctial Storm, Expedition Hurricane, and the Saxby Gale. Since hurricanes were not named and fewer records were kept at the time, the information on some of the storms remains incomplete.

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The 20th century saw eight hurricanes making landfall in New England; out of these the more notable include the New England Hurricane of 1938 (also called the Long Island Express), which made landfall as a major hurricane;&*' Hurricane Carol did the same sixteen years later.&*' The last hurricane to make landfall in New England was Hurricane Bob in 1991 as a Category 2 hurricane with maximum sustained winds of 100 mph.&*'

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So far in the 21st century three tropical cyclones have made landfall in New England. Tropical Storm Hermine in 2004, which made landfall in southeastern Massachusetts, Tropical Storm Beryl in 2006, which made landfall in Nantucket, and Tropical Storm Hanna in 2008, which made landfall in Connecticut. All three storms caused minimal damage overall throughout the region.

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Some tropical cyclones that have impacted New England have resulted in fatalities in the region. The most notorious and deadly of these storms is the 1938 New England hurricane which killed between 682 and 800 people. This list includes all tropical cyclones that have resulted in at least 10 deaths in New England. Some storms may be excluded or their death toll may be inaccurate due to a lack of available data at the time.

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