Conservation Commission Regular Meeting Materials (linked)

NEW ENGLAND ENVIRONMENTAL SERVICES 
Wetland Consulting Specialists Since 1983 
30 GINA LANE, CONNECTICUT 06447 
richsnarski@gmail.com  •  860-918-1970  •  www.richsnarski.com 
 
 
 
 
 
2021 Monitoring Report 
 
 
 
 
 
 
 
Seaview Terrace 
305-317 Rope Ferry Road 
Waterford, Connecticut 
 
 
 
 
 
 
 
November 30, 2021 
 
 
 
 
 
 
 
Prepared by: 
 
R. Richard Snarski 
Registered Professional Soil Scientist 
Professional Wetlands Scientist #1391 
Consulting Botanist 
 

 
 
2021 Monitoring Report 
Seaview Terrace 
305-317 Rope Ferry Road 
Waterford, Connecticut 
 
 
Biofiltration Basins 
The two biofiltration basins, restored wetland swale, and restored vegetated wetland buffer east of 
the wetlands and pond were monitored on November 24, 2021. 
 
Southwestern Biofilter 
The basin was cut earlier in the year. The dominant plant species in the basin are Curl Dock and 
Soft Rush. Other plant species include Reed Canary Grass, Bidens, Tussock Sedge, and Wool 
Grass. Phragmites is growing in the forebay as noted in the previous monitoring report. Mugwort 
(exotic invasive) is the dominant species growing on the side slopes and central berm, also noted 
in the previous monitoring report. The biofilter is fully vegetated and the side slopes are 
established. There is no sediment in the riprap spillway. 
 
Northern Biofilter 
The basin was cut earlier in the year. Soft Rush occupies approximately 85 percent of the basin. 
Other plant species include Curl Dock, Bidens, and Goldenrod. The basin has been mowed and 
was being hand raked the day of monitoring. Mugwort is the dominant plant species on the side 
bank of the biofilter. The riprap in the forebay was replaced and there was no silt sediment. In 
2020, silt sediment was abundant in the forebay. 
 
Restored Wetland Swale 
The wetland swale has a leaf cover with very sparse vegetation. Reed Canary Grass is growing in 
the swale. The vegetation growing on the side slopes of the swale includes Multiflora Rose and 
Goldenrod. There is no recent sediment present in the swale. There is no erosion in the swale or 
the side slopes. 
 
Restored Wetland Buffer 
The majority of the wetland buffer has been mowed up to the stonewall. In 2020, Phragmites was 
the dominant plant species and formed a monoculture in the southern section. Other plant species 
in the wetland buffer include Mugwort, Goldenrod, and Japanese Honeysuckle. The three shrubs 
which were present in the wetland buffer died or were mowed. 
 
Recommendations 
1. 
The wetland buffer should not be mowed. 
 

Southern view of the northern biofilter 
 
 

Northern view of restored wetland swale 
 

Southern view of the restored wetland swale 

Northern view of northern biofilter 
 
 

Replaced riprap in northern biofilter forebay 
 
 

Southern view of southwestern biofilter 
 
 

Northern view of southwestern biofilter 
 
 

Mowed wetland buffer