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The Winthrop Group – Consulting Engineers

Tel 860.460.1606 Fax 860.495.5563 Email: ewenke@comcast.net

Licensed in: Connecticut, Rhode Island, Massachusetts, Maine, New York, Maryland, Pennsylvania, Wisconsin & California

COASTAL AREA MANAGEMENT (CAM) REPORT

COASTAL AREA MANAGEMENT (CAM) REPORT

Addendum to CAM Application – Date: February 05, 2020; REVISED 06.14.20 1. GENERAL:

Project: Church Residence – New 3-BR House Construction - ZR Section 4.1.1 Location: 26 Jordan Cove Road; Town of Waterford; New London County, CT 06385

Latitude: 41.3026 Longitude: -72.1235 Owner/Applicant: Manly & Sharon Church

45 Westwood Drive; Waterford, CT 06385

Tel. (860) 460-7402 Email: grifchurch@sbcglobal.net Site Area: 56,150+/- SF (1.3+/- Ac) measured to MHW Line

Zoning District: R-20 – Medium Density Residential General Description:

o The entire existing parcel is currently undeveloped and vacant.

o The subject site has approx. 520+/- LF direct waterfrontage along Jordan Cove which is tidal.

o Site contains up to 2,500+/- sf (6%) of CTDEEP tidal vegetation along the water frontage.

o Approx. 21,000 sf (38%) of existing site is vegetated with young tree growth.

o Approx. 20,000 sf (36%) of existing site is vegetated with grass lawn.

o Approx. 2,000 sf (3%) of site is an existing gravel surface drive.

o Approx. 2,500 sf (6%) of site is an existing PLANTED “Living Slope” shoreline bed.

o Remaining 10,650 sf (14%) of site is shoreline – Tidal Vegetation; sand/stone/ledge o Average site grade slopes downward -4% NE to SW to -9% toward water frontage.

Current Land Uses adjacent to the subject parcel include:

- North: Across Jordan Cove Road – Undeveloped Wooded Residential – R-40 Zone - West: Waterfront – Jordan Cove

- South: Waterfront – Jordan Cove

- East: Developed Single-Family Residential Waterfront House – R-20 Zone Special Zones:

- FEMA Coastal High Hazard Zone “VE” (EL. 14.00 NAVD): 26,150 sf (0.6 Ac) ~ 46%

- FEMA “Shaded X” Zone: 23,400 sf (0.54 Ac) ~ 42%

- FEMA “X” Zone: 6,600 sf (0.15 Ac) ~ 12%

- FEMA Coastal Barrier Reserve System (CBRS): 11,600 sf (0.27 Ac) ~ 21%

- Located within Coastal Area Management (CAM) Zone - Not located within 500 Feet of any other municipality.

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The Winthrop Group – Consulting Engineers

Tel 860.460.1606 Fax 860.495.5563 Email: ewenke@comcast.net

Licensed in: Connecticut, Rhode Island, Massachusetts, Maine, New York, Maryland, Pennsylvania, Wisconsin & California

COASTAL AREA MANAGEMENT (CAM) REPORT

Proposed Development:

o Proposed Site Surface disturbance area = 20,000 +/- sf (36%)

o The proposed Land Use: New 1-Family 3-BR Residential House (3,240 +/- sf) o CAM Permit required (non-exempt) because the proposed House will be constructed

within 100’ from limit of Coastal Resource: top of Embankment/Escarpment o This proposed Land Use is NOT a Water-Dependent Use.

o House to be constructed within FEMA “Shaded X” Zone (NOT within 100-Yr Flood).

o New Municipal San Sewer service connection o New municipal domestic Water service connection o New U/G Elec/Tel/CATV services to house.

o New stone surfaced driveway/apron (4,600 +/- sf)

o The balance of the unvegetated/stone surface site will be grass lawn.

2. PREVIOUS APPROVED CAM PERMIT HISTORY:

This parcel has a previous CAM Permit #PL-15-1, approved by the Town of Waterford PZC (03/23/2015). This permit was for a shoreline stabilization including a planted ‘Living Slope”.

The slope stabilization & plantings were installed in 2016.

As of this date, the “Living Slope” Area has been planted with a mix of shrubs, decorative coastal grasses and some small evergreen shrubbery. The surface of the slope was covered with a filter fabric and shredded bark mulch.

As a part of this application, the owner will carefully cut and remove the filter fabric down to the topsoil layer. The owner shall then install a staked Conservation Seed Mix impregnated blanket over entire slope around all plantings to complete the original approved “Living Slope” planting specification.

Since the completion of the installation, a portion of the toe and original installed “Core Log” of this stabilized slope (designed & installed by others) has “failed” and has wash-out/eroded due to storm Wave Action. This leaves an exposed toe of the slope that consists of boulder fill (below the installed “Living Slope” covered with filter fabric from slope above. As part of this application, the filter fabric will be maintained over the exposed boulders. No other work to the toe of this slope is proposed at this time.

Additionally, due to this continued wave action erosion, the Owner had constructed a stone retaining wall section at the base of the cherry tree that was in danger of eroding out of the slope and falling into the water. This stone wall is approx. 3.5’ max height and has been installed &

operating without erosion problems since 2017. CTDEEP defines this wall as a “hardened shoreline” and thusly does not permit it. As a part of this application, the Owner will remove the existing stone wall and the existing twin cherry tree behind it. The newly disturbed area of slope will be approx. 750 sf. All machine/equipment work will be performed from the upper slope side. No machine/equipment is permitted to be operated on the water side of the existing

(3)

The Winthrop Group – Consulting Engineers

Tel 860.460.1606 Fax 860.495.5563 Email: ewenke@comcast.net

Licensed in: Connecticut, Rhode Island, Massachusetts, Maine, New York, Maryland, Pennsylvania, Wisconsin & California

COASTAL AREA MANAGEMENT (CAM) REPORT

retaining wall. The newly disturbed slope will be graded to a 5H : 1V shallow slope and be stabilized with coastal rated shrubbery & ornamental grasses as specified on the current project plans.

3. CONSISTENCY WITH APPLICABLE COASTAL RESOURCE POLICIES:

A. Coastal Hazard Area (ON-SITE & ADJACENT RESOURCE): Coastal hazard areas are statutorily defined as those land areas inundated during coastal storm events or subject to erosion induced by such events, including flood hazard areas as defined and determined by the National Flood Insurance Act and all erosion hazard areas as determined by the Commissioner [Connecticut General Statutes (CGS) section 22a-93(7)(H)]. In general, coastal flood hazard areas include all areas designated as within A-zone and V-zones by the Federal Emergency Management Agency (FEMA). A-zones are subject to still-water flooding during so called “100-year” flood events. During 100-year flood events, V-zones are subject to direct action by waves three feet or more in height.

Applicable Resource Policies:

1. “To manage coastal hazard areas so as to insure that development proceeds in such a manner that hazards to life and property are minimized and to promote nonstructural solutions to flood and erosion problems except in those instances where structural alternatives prove unavoidable and necessary to protect existing inhabited structures, infrastructural facilities or water-dependent uses [CGS section 22a-92(b)(2)(F)].

2. “Apply the National Flood Insurance Program flood plain management requirements [24Code of Federal Regulations (CFR) 60.3] to: 1) all activities in designated A-zones and floodways; and 2) to all new construction or substantial improvements in designated coastal high hazard zones (V-zones).

3. “Site all new or substantially improved buildings, dwellings and non-water-dependent structures out of the designated coastal high hazard area (V-Zone).”

4. “Maintain or restore natural vegetation in coastal high hazard areas (V-Zones) to serve as buffers against storm, wind, and wave energy.”

5. “Maintain or restore natural landforms within or adjacent to coastal hazards areas that serve as buffers to flood and erosion such as beaches, dunes and wetlands.”

Consistency With Policies: This project proposes construction of a new house completely located outside of VE-14 Zone & any other 100-year Flood Zone limits and will not be subject to any velocity wave action. This project consistent with the Applicable Coastal Resource Policy and proposes no new or remaining Adverse impacts to the Coastal Hazard Area.

B. Tidal Wetlands (ON-SITE & ADJACENT RESOURCE): Tidal wetlands are “those areas which border on or lie beneath tidal waters, such as, but not limited to banks, bogs, salt marshes, swamps, meadows, flats, or other low lands subject to tidal action, including those areas now or formerly connected to tidal waters, and whose surface is at or below an

(4)

The Winthrop Group – Consulting Engineers

Tel 860.460.1606 Fax 860.495.5563 Email: ewenke@comcast.net

Licensed in: Connecticut, Rhode Island, Massachusetts, Maine, New York, Maryland, Pennsylvania, Wisconsin & California

COASTAL AREA MANAGEMENT (CAM) REPORT

elevation of one foot above local extreme high water; and upon which may grow or be capable of growing some, but not necessarily all, of [a list of specific plant species - see Connecticut General Statutes (CGS) section 22a-29(2) for complete list of species]” [CGS section 22a-29, as referenced by CGS section 22a-93(7)(E)]. In general, tidal wetlands form in “low energy” environments protected from direct wave action. They are flooded by tidal waters twice a day and support a diverse ecosystem of vegetation and wildlife.

Applicable Resource Policies:

1. It is declared that much of the wetlands of this state have been lost or despoiled by unregulated dredging, dumping, filling and like activities and despoiled by these and other activities, that such loss or despoliation will adversely affect, if not entirely eliminate, the value of such wetlands as sources of nutrients to finfish, crustacea and shellfish of significant economic value; that such loss or despoliation will destroy such wetlands as habitats for plants and animals of significant economic value and will eliminate or substantially reduce marine commerce, recreation and aesthetic enjoyment and that such loss of despoliation will, in most cases, disturb the natural ability of tidal wetlands to reduce flood damage and adversely affect the public health and welfare; that such loss or despoliation will substantially reduce the capacity of such wetlands to absorb silt and will thus result in the increased silting of channels and harbor areas to the detriment of free navigation. Therefore, it is declared to be the public policy of this state to preserve the wetlands and to prevent the despoliation and destruction thereof [CGS section 22a-28 as referenced by CGS section 22a-92(a)(2)].

Consistency With Policy: The tidal wetlands on this parcel were not formally flagged/mapped by a Certified Soil Scientist. However, a field survey of the limits of vegetation was performed.

These tidal vegetated areas are characterized by semi-submerged patches of Spartina Alterniflora (Smooth Cordgrass). This vegetation is designated as a Hydrophite, and almost always occurs in a Tidal Wetland/salt marsh. This species is NOT on the State of CT Invasive Species list. Other vegetation found along shoreline is Phragmites Australis (Common Reed). This vegetation is designated as a Hydrophite, and can occur both in Faculative Wetlands as well as non-wetland areas. This species is also designated as invasive. This project is consistent with this policy in that it does not encroach, alter or fill the regulated Tidal Wetland Area in anyway. The Project will protect all existing tidal vegetative cover which will also maintain all of the natural filtration qualities and wildlife habitat within that area. Site has been designed to only propose roof area as impervious surface. Roof stormwater (initial 1” rainfall) will be discharged into a new River- Rock stone filter trench for recharge into the well-drained sandy subsoil ground. No point source of discharges is proposed toward the wetland or associated buffer. All other disturbed site surfaces will be either crushed stone driveway and/or grass lawn (pervious surface). No commercial/industrial waste discharges are generated by this project. Due to these measures being implemented, there are no changes, degradation or adverse effects to the existing estuarine marine life, vegetation or flow patterns within the adjacent tidal Jordan Cove. This project proposes no new Adverse impacts to the Tidal Wetlands and is Consistent with the applicable

(5)

The Winthrop Group – Consulting Engineers

Tel 860.460.1606 Fax 860.495.5563 Email: ewenke@comcast.net

Licensed in: Connecticut, Rhode Island, Massachusetts, Maine, New York, Maryland, Pennsylvania, Wisconsin & California

COASTAL AREA MANAGEMENT (CAM) REPORT

Resource Policies.

C. Coastal Waters & Estuarine Embayments (ADJACENT RESOURCE): Coastal waters are those waters of Long Island Sound and its harbors, embayments, tidal rivers, streams and creeks, which contain a salinity concentration of at least five hundred parts per million under the low flow stream conditions as established by the commissioner [Connecticut General Statutes (CGS) section 22a-93(5)]. Estuarine Embayments are a protected coastal body of water with an open connection to the sea in which saline sea water is measurably diluted by fresh water including tidal rivers, bays, lagoons and coves [CGS section 22a- 93(7)(G)]. As such they have high biological productivity; provide significant habitat for shellfish, finfish and waterfowl; serve as spawning and feeding grounds for commercially important finfish; are essential biological corridors for spawning anadromous and catadramous fish; exhibit unique circulation patterns (estuarine circulation) which influence nutrient distribution, control salinity, mix the water column and work and redistribute sediments; supply sheltered areas for the development of eelgrass flats or beds of other submerged aquatic vegetation which are highly productive; provide nursery grounds, shelter and refuge for various aquatic species; are a vital food source for marine organisms, support an important biomass of epiphytic plants (plants that grow on other plants or objects upon which they depend for mechanical support but not as sources of nutrients); and transfer nutrients from sediments into the water column. Estuarine embayments also provide protected locations for activities such as boating, swimming, fishing and other passive recreational activities and protected areas for deep water access and navigational corridors for commercial and industrial waterfront uses; are areas of unique scientific and educational value, and some embayments contain eelgrass flats which reduce current velocities, control erosion by trapping and binding sediments and provide essential aquatic habitat.

Applicable Resource Policies:

1. To manage estuarine embayments so as to insure that coastal uses proceed in a manner that assures sustained biological productivity, the maintenance of healthy marine populations and the maintenance of essential patterns of circulation, drainage and basin configuration; to protect, enhance and allow natural restoration of eelgrass flats except in special limited cases, notably shellfish management, where the benefits accrued through alteration of the flat may outweigh the long-term benefits to marine biota, waterfowl, and commercial and recreational fin fisheries [CGS section 22a-92(c)(2)(A)].

2. Degrading water quality through the significant introduction into either coastal waters or groundwater supplies of suspended solids, nutrients, toxics, heavy metals or pathogens, or through the significant alteration of temperature, pH, dissolved oxygen or salinity [CGS section 22a-93(15)(A)].

Consistency With Policies: This project is consistent with this policy in that it will protect all existing tidal waters from any source of pollution and maintain all of the natural tidal circulation

(6)

The Winthrop Group – Consulting Engineers

Tel 860.460.1606 Fax 860.495.5563 Email: ewenke@comcast.net

Licensed in: Connecticut, Rhode Island, Massachusetts, Maine, New York, Maryland, Pennsylvania, Wisconsin & California

COASTAL AREA MANAGEMENT (CAM) REPORT

patterns, finfish & shellfish habitats and submerged aquatic vegetations. This project proposes no new Adverse impacts to the Estuarine Embayment and is Consistent with the applicable Resource Policies.

D. Bluffs & Escarpments: Bluffs and escarpments are naturally eroding shorelands marked by dynamic escarpments or sea cliffs which have slope angles that constitute an intricate and dynamic balance between erosion, substrate, drainage and degree of plant cover [Connecticut General Statutes (CGS) section 22a- 93(7)(A)]. In general, they are dynamic, erosion-prone areas. Bluffs and escarpments are a significant sediment source for other features such as beaches and dunes. They provide valuable wildlife habitat and support unique plant communities and species. They reduce the impact of coastal flooding by dissipating wave energy. In some instances, they can provide recreational opportunities and scenic vistas if such uses can be designed to protect the resource from disturbance.

Applicable Resource Policies:

1. To manage coastal bluffs and escarpments so as to preserve their slope and toe; to discourage uses which do not permit continued natural rates of erosion; and to disapprove uses that accelerate slope erosion and alter essential patterns and supply of sediments to the littoral transport system [CGS section 22a-92(b)(2)(A)].

2. Degrading tidal wetlands, beaches and dunes, rocky shorefronts, and bluffs and escarpments through significant alteration of their natural characteristics or functions [CGS section 22a-93(15)(H)]

3. Consistency With Policies: The shoreline of this parcel has been visually characterized as a shoreline escarpment. Previous permitted shoreline stabilization methods have been implements. The shrubbery & ornamental grasses planted portion of the “Living Slope”

(designed by others) has been completed. The “living Slope area will be completed with Conservation Seed-mix blanket as described above. This will effectively complete the original “Living Slope” specification. The existing non-permitted stone retaining wall will be removed and the adjacent sloped area shall be regraded and stabilized as described above. The proposed stabilization repairs are consistent with this policy in that it will ensure a stabilized shoreline escarpment and help to minimize/slow further erosion and wash-out of the escarpment from continued future storm wave action. This project proposes no new Adverse impacts to the Modified Escarpment and is Consistent with the applicable Resource Policies.

4. CONSISTENCY WITH COASTAL USE POLICIES & STANDARDS:

A. General Development: To ensure that development, preservation of the use of land and water resources of the coastal area proceeds in a manner that is consistent with the capability of the land and water resources to support development, preservation or use without significantly disrupting either the natural environment or sound economic growth.

CGS 22a-92.

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The Winthrop Group – Consulting Engineers

Tel 860.460.1606 Fax 860.495.5563 Email: ewenke@comcast.net

Licensed in: Connecticut, Rhode Island, Massachusetts, Maine, New York, Maryland, Pennsylvania, Wisconsin & California

COASTAL AREA MANAGEMENT (CAM) REPORT

Consistency With Policy: This project is consistent with this policy in that it ensures the preservation of all on-site and adjacent Coastal resources while promoting sound economic growth of the local area. This project proposes no new or remaining Adverse impacts to the General Development of this parcel.

B. Water Dependent Uses (Not On-Site or Adjacent): Municipal boards and commissions reviewing coastal site plans shall determine if the potential adverse impacts to future water- dependent development activities are acceptable and that such impacts have been mitigated using all reasonable mitigation methods [CGS sections 22a-106(a) and (e)].

Consistency With Policy: This project is NOT a Water-Dependent Use” and is not adjacent to any existing “Water-Dependent Uses” and as such proposes no new or remaining Adverse impacts to any other Water Dependent Uses.

5. IDENTIFICATION OF POTENTIAL ADVERSE IMPACTS FROM DEVELOPMENT

& PROPOSED MITIGATION MEASURES:

a. Potential Impact: Degrading or destroying essential wildlife, finfish or shellfish habitat through significant alteration of the composition, migration patterns, distribution, breeding or other population characteristics of the natural species or significant alterations of the natural components of the habitat [CGS section 22a-93(15)(G)].

Proposed Mitigation: The project proposes the protection of the regulated tidal vegetated areas. This project does not pose any adverse effect on marine fin- fish/shellfish habitat.

There are NO Remaining Adverse Impacts to the current On-Site & Adjacent Off-Site Coastal Resources resulting from this project.

6. IDENTIFICATION OF CTDEEP Natural Diversity Database (NDDB) Species:

Based on the CTDEEP NDDB Determination # 202001341 (attached). Dated 01/30/2020 (expires 01/30/2022), the site habitat does not contain and endangered species or any other species of State Special Concern that would be affected by this project..

Prepared by:

Edward H. Wenke III, PE Conn. PE #16771

Expires: 01/31/2021

(8)

The Winthrop Group – Consulting Engineers

Tel 860.460.1606 Fax 860.495.5563 Email: ewenke@comcast.net

Licensed in: Connecticut, Rhode Island, Massachusetts, Maine, New York, Maryland, Pennsylvania, Wisconsin & California

COASTAL AREA MANAGEMENT (CAM) REPORT

STORMWATER MANAGEMENT PLAN Date: February 05, 2020

1. GENERAL:

Project: Church Residence – New 3-BR House Construction - ZR Section 4.1.1 Location: 26 Jordan Cove Road; Town of Waterford; New London County, CT 06385

Latitude: 41.3026 Longitude: -72.1235 Owner/Applicant: Manly & Sharon Church

45 Westwood Drive; Waterford, CT 06385

Tel. (860) 460-7402 Email: grifchurch@sbcglobal.net Site Area: 56,150+/- SF (1.3+/- Ac) measured to MHW Line

2. ZR 25.6.11 – Stormwater Management:

Executive Summary: The existing undeveloped site currently sheet flows surface stormwater from the NE Corner, generally running North to South, with all site run-off ultimately sheet-flow discharging into Jordan Cove. The run-off generated is mostly from on-site watershed, with little or no off-site Upland Watershed contributing to the run-off.

The proposed run-off from this site will also sheet flow in the same direction to the Jordan Cove water frontage. Change in surface areas are as follows:

 New impervious area limited to new house roof & Semi-Impervious Stone Paver Terrace.

 New driveway is pervious crushed stone surface as part of LID’s implemented.

 Roof run-off is collected and discharged into River Rock Perimeter Filter Strip for groundwater recharge, also as part of the LID’s implemented.

(9)

The Winthrop Group – Consulting Engineers

Tel 860.460.1606 Fax 860.495.5563 Email: ewenke@comcast.net

Licensed in: Connecticut, Rhode Island, Massachusetts, Maine, New York, Maryland, Pennsylvania, Wisconsin & California

COASTAL AREA MANAGEMENT (CAM) REPORT

 Existing vegetated Living Slope & Wooded Slopes remain undisturbed and provides adequate surface run-off filtration prior to discharge into tidal wetlands & Jordan Cove.

ZR 25.6.11.1 – Soil Characteristics: NRCS Soils Mapping identifies the following Soil Types on this site:

#34B – Merrimac F-Sandy/Gravelly Loams. Hydrologic Soil Group “A”. Ksat = High to V. High 1.42 to 99.90 in/hr; Run-off Class: Excessively Well-Drained; GWT > 80”

#73C – Charlton-Chatfield Complex; Gravelly Sandy Loams. Hydrologic Soil Group “B”.

Ksat = Low to Md High 0.14-14.17 in/hr; Run-off Class: Well-Drained; GWT > 80”

#875 – Pishagqua Silt-Loam (Sub-Aqueous); Frequently Flooded (along immediate shoreline) No Soil Test Pits were performed on this site.

ZR 25.6.11.2 – Location of Surface Water Bodies & Wetlands on & adjacent to site:

The site is directly adjacent and has approximately 520+/-LF of frontage along the MHW line of Jordan Cove (tidal). No other waterbodies or watercourses run within site limits. A freshwater wetland/brook on property to the north (across Jordan Cove Road) may discharge to Jordan Cove via an existing culvert located west of NW parcel corner (off-site). The site contains approximately 2500+/- SF of CTDEEP Tidal Spartina Vegetation along the water frontage.

GWT is likely tidally influenced. No designated Aquifer areas are on or adjacent to the site.

ZR 25.6.11.3 – CTDEEP Water Quality Classifications:

The waters of Jordan Cove are Classified “SA”, which is a Saline Water Classification with designated uses include habitat for marine fish & aquatic life, Wildlife, commercial shellfish harvesting, recreation, industrial water supply & navigation.

ZR 25.6.11.4 – Potential Pollutant Sources:

The proposed single-family residential use is not classified/listed as a Land Use with Potential for Higher Pollutant Loads (CTDEEP SWQM – Tbl. 7-5). This use does not pose any significant potential for pollution sources. Roof Drainage is designed to be discharged to a River Roak Stone Filter Strip all around the terrace walls for groundwater recharge. This is considered

“clean” run-off. The driveway will be a crushed stone pervious surface. No road salts or sands are used on-site. No Total Suspended Solids (TSS) within the storm run-off are generated by this use.

ZR 25.6.11.5 – Conformance with CTDEEP Stormwater Quality Manual:

The proposed single-family use and small (½ Acre) disturbed area in addition to the LID measures proposed are in conformance with the intent and standards to the CTDEEP Stormwater Quality Manual. This site is not located in the Jordan Brook, Stony Brook or Niantic River watersheds.

(10)

The Winthrop Group – Consulting Engineers

Tel 860.460.1606 Fax 860.495.5563 Email: ewenke@comcast.net

Licensed in: Connecticut, Rhode Island, Massachusetts, Maine, New York, Maryland, Pennsylvania, Wisconsin & California

COASTAL AREA MANAGEMENT (CAM) REPORT

ZR 25.6.11.6 – Storm Run-off Mgmt to Eliminate surface/groundwater pollution, prevent flooding & control peak discharge:

Based on the proposed land use and developed surface conditions, this Stormwater Management Plan has been developed to address the following:

 Elimination Surface/GWT Pollution: During Construction Phase, all disturbed site surfaces will be delineated & protected with a continuous staked sediment barrier to prevent any sediment run-off from running into the vegetated tidal wetland buffer. Under stabilized & Developed conditions, no TSS is generated by the developed finl post- construction site run-off. The Single-family use will not generate any other potential pollutant discharges into the groundwater or surface waters adjacent to the site.

 Prevent Flooding: The limits of site disturbance, new structures & improvements site are located outside of any 100-year tidal flood zones. Stormwater run-off generated by this site does not cause any additional flooding.

ZR 25.6.11.7 – Location Description of LID’s, Controls & BMP’s:

The project design has been developed utilizing the following measures:

Low Impact Development (LID) Measures:

a. Provide & Maintain crushed stone surface (pervious) driveway apron.

b. Capture & infiltrate Roof Drainage into River Rock Stone Filter Strip for GWT recharge.

Best Management Practices (BMP):

a. Limit impervious surface on-site to building roof & Semi-Impervious Stone Paver Terrace surface only. All other site surfaces to remain as “pervious”.

b. Maintain vegetated Living Slope & Wooded shoreline slopes in natural state to maintain existing storm runoff filtration & energy dissipation.

c. Re-Grade 750 SF shoreline embankment (behind removed retaining wall) to shallow pitch slope 5H : 1V and stabilize with new coastal vegetation.

d. Test topsoil to determine if fertilizer/what nutrients are needed for lawn & planting beds.

e. Use only slow-release nitrogen organic fertilizer (containing no Phosphorous) in lawns or garden beds. Apply as required only in small amounts.

f. Use a “Fescue” type grass which requires less nitrogen than other “bluegrasses”.

g. Restrict use of any non-organic lawn/grass fertilizers to minimize/eliminate any nitrogen or phosphorous content within site surface run-off to the tidal wetlands.

h. Restrict use of pesticide/herbicide/fertilizer mixtures.

i. Do not stockpile any compost or earth materials piles near the shoreline.

ZR 25.6.11.8 – Operations & Inspections/Maintenance of LID’s, Controls & BMP’s:

Keep Surface of River Rock Stone Filter Strip clean regularly from lawn clipping, leaves and any other debris that was clog the surface voids.

(11)

The Winthrop Group – Consulting Engineers

Tel 860.460.1606 Fax 860.495.5563 Email: ewenke@comcast.net

Licensed in: Connecticut, Rhode Island, Massachusetts, Maine, New York, Maryland, Pennsylvania, Wisconsin & California

COASTAL AREA MANAGEMENT (CAM) REPORT

ZR 25.6.11.9 – Responsible Party for Inspections/Maintenance of LID’s, Controls &

BMP’s:

The Property Owner shall be responsible for perpetual inspections, maintenance & repair of any storm run-off mitigation/infiltration system constructed on this site.

ZR 25.6.11.12 – Calculations for sizing pipes, swales, riprap aprons, plunge pools or other energy dissipation devices:

Not Applicable

ZR 25.6.11.13 – Calculations for design Water Volume Quality (WQV) to be treated &

Groundwater Recharge Volume (GRV) per CTDEEP SWQM, Ch.7:

References

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