The goal of the Clean Water Act (cwa) is to restore and maintain the chemical, physical, and biological integrity of the Nation’s waters
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- WMA water withdrawal Summary (APPENDIX E, TABLE E5)
- NPDES wastewater Summary
- Shellfish Harvesting
- Primary and Secondary Contact RECREATION and Aesthetics
RecommendationsImplement recommendations in the DMF shellfish management plan for area MB10.1. Develop a monitoring plan and conduct bacteria sampling to evaluate effectiveness of point (Phase II stormwater permits) and non-point source pollution control activities and other actions and to assess the status of the Primary and Secondary Contact Recreational uses. Continue to review/evaluate the operation of the Town of Cohasset WWTP. Their permit MA0100285 should be reissued with appropriate limits and monitoring requirements. Support DMF efforts to improve availability/access (electronic or web site) to water quality and biological monitoring data collected from DMF shellfish sampling stations to assess the status of the Primary and Secondary Contact Recreational uses. Cohasset Harbor (Segment MA94-01) Location: The waters south of a line drawn from the northwestern point of Scituate Neck, Scituate to just north of Quarry Point, Cohasset not including Cohasset Cove, Cohasset/Scituate. Size: 0.70 square miles Classification: Class SA Land-use estimates (top 3, excluding water) for the 17.6 mi2 subwatershed (including the subwatersheds for MA94-18, MA94-19, MA94-32 and MA94-33): Forest 58% Residential 27% Wetlands 7% Cohasset Harbor is listed on the 2002 Integrated List of Waters in Category 5. This segment is impaired due to pathogens and a TMDL is required (MassDEP 2003a). WMA water withdrawal Summary (APPENDIX E, TABLE E5)
NPDES wastewater SummaryThere are no NPDES wastewater discharges in this segment. Use AssessmentAquatic LifeEelgrass Bed Habitat MassDEP’s Wetlands Conservancy Program (WCP) identified the presence of eelgrass in Cohasset Harbor from historic 1951 black and white aerial photography (Costello 2003). In 1998 MassDEP WCP performed field verification of 1995 aerial photography and mapped the extent of eelgrass bed habitat in Cohasset Harbor. Total areal coverage of Cohasset Harbor from the 1998 survey was approximately 20% of the harbor. In 2001 MassDEP WCP performed field verification of 2001 aerial photography and mapped the extent of eelgrass bed habitat in Cohasset Harbor. There was a very slight increase in the total coverage of eelgrass beds between 1998 and 2001 including two new areas. There has been no apparent overall loss in eelgrass beds since 1951. Too limited data are available so the Aquatic Life Use for Cohasset Harbor is not assessed. Shellfish HarvestingThe DMF Shellfish Status Report of July 2000 indicates that area MB10.0 is approved (which contains 0.63 mi2 of this segment), and the following areas totaling 0.07 mi2 are prohibited: Sandy Cove (Area MB10.2), Whales Cove (Area MB10.4), and the Briggs Harbor system (Areas MB10.3 and MB10.5) (MA DFG 2000; Appendix G, Table G3; and Churchill 2003a). Potential pollution sources identified by DMF in Sandy Cove (Area MB10.2) include a pipe draining Treat Pond, which is contributing elevated bacteria. Potential pollution sources to Whales Cove (Area MB10.4) include stormdrains. Unknown sources contribute to the Briggs Harbor system (Churchill 1994 and 2005a). Based on the DMF shellfish growing area status, the Shellfish Harvesting Use is assessed as support for 0.63 mi2 of this segment and impaired for 0.07 mi2 of this segment presumably due to elevated fecal coliform bacteria. Primary and Secondary Contact RECREATION and AestheticsWeekly testing for Enterococci bacteria during the swimming season was conducted at the Bassing Sailing Club semi-public beach along the southern shore of Cohasset Cove, Cohasset/Scituate. Only one posting in the 2002 and 2003 beach seasons was reported (in 2003), although apparently not related to elevated bacteria counts (MDPH 2003 and 2004b). Weekly testing for Enterococci bacteria during the swimming season was conducted at the Sandy Cove public beach in Cohasset. No postings were reported in either the 2002 or 2003 beach seasons (MDPH 2003 and 2004b). No objectionable conditions were noted by DWM biologists (DeCesare 2005). The Primary and Secondary Contact Recreational and Aesthetics uses are assessed as support in Cohasset Harbor. The beaches were open for the majority of the 2002/2003 bathing seasons and no objectionable aesthetic conditions were noted. Cohasset Harbor (MA94-01) Use Summary Table
Directory: eea -> docs -> dep -> water -> resources -> 71wqar09 dep -> Charles D. Baker Governor dep -> Charles D. Baker Governor dep -> Charles D. Baker Governor dep -> Index of Photographs dep -> Department of environmental protection one winter street, boston, ma 02108 617-292-5500 water -> Water Resource Management Planning 71wqar09 -> 2004 water quality assessment report Download 3.32 Mb. Share with your friends:
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