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 
 
 
 
 
 
 
 
May 3, 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 April 14, 2021. 
 
Southwestern Biofilter 
Some of the herbaceous plant species could not be identified because the biofilter basin has been 
mowed and due to the time of the year. The dominant vegetation is Tussock Sedge, Wool Sedge, 
Curl Dock, Soft Rush, Goldenrod, Reed Canary Grass and Bidens. Phragmites is growing in the 
forebay. Mugwort is the dominant plant species growing on the central birm and side slopes of the 
biofilter. The biofilter basin is fully vegetated and the side slopes are stabilized. There is no 
sediment in the rip-rap spillway. 
 
Northern Biofilter 
Soft Rush occupies approximately 95 percent of the basin. Other species include Tussock Sedge, 
Curl Dock 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 basin. Sediment 
(silt) is abundant in the forebay and some of the rip-rap spillway. 
 
Restored Wetland Swale 
The vegetation species in and on the side banks of the watercourse includes Reed Canary Grass, 
Multiflora Rose and Skunk Cabbage. Vegetation in the watercourse is sparse, as was the case in 
2019. There is a thin silt film on the leaves in the watercourse. There is no erosion in the channel 
or side bank. There are several large branches and a 2”x6” board in the watercourse. 
 
Restored Wetland Buffer 
The restored wetland buffer area east of the wetlands and pond was reviewed. None of the 48 
shrubs species planted survived. In 2019, only 3 shrubs survived. The lost of the shrubs was 
probably due to exotic invasive plants shading out the shrubs. The dominant plant species in the 
wetland buffer area is Phragmites, Goldenrod, and Mugwort. Other plant species include 
Multiflora Rose, Goldenrod, Russian Autumn Olive, Japanese Honeysuckle, and Burning Bush. 
 
Remedial Measures 
1. 
Replace the rip-rap and sediment in the forebay of the northern biofilter. 
2. 
Remove the branches and 2”x6” board in the watercourse. 
3. 
I believe replanting the shrubs in the wetland buffer area east of the pond is not practical due 
to the area being dominated by Phragmites and Mugwort, which are an exotic invasive plant 
species. 
 

Southwestern Biofilter 
April 14, 2021 

Southwestern Biofilter 
April 14, 2021 
 

Northern Biofilter Basin 
April 14, 2021 
 

Restored Wetland/Watercourse – Northern View 
April 14, 2021 
 

Restored Wetland/Watercourse – Southern View 
April 14, 2021