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Appendix II. Maine Healthy Beaches Program Risk Assessment Matrix

II. Potential and Actual Sources of Contamination Impact Guidelines

  • Adjacent to the beach

  • Adjacent to a stream/river that empties within a mile of the beach

  • Drains directly to the beach

1. Score 1 point for each of the following that impacts the beach based on impact guidelines (see above):

(# of drains

______

x 1 point)

(# of farms/kennels

______

x 1 point)

  • i.

    Number of Land Drains

  • ii.

    Number of Animal Farms or Kennels

__________

__________

(# of drains

______

x 1 point)

(# of drains

______

x 1 point)

  • iii.

    Number of Roof Gutter Drains

  • iv.

    Number of Gray Water Drains

__________

__________

Segment 1 Total

__________

2. Subsurface Waste Water Disposal (i.e. septic, cesspool) Systems that have not been inspected in over 3 years

(# uninspected systems

______

x 3 points)

__________

3. Score 5 points for each intermittent stream flow

(# stream flows

____

x 5 points)

__________

4. Score 10 points for each of the following that impacts the beach based on impact guidelines:

i. Waterbody on the 303d list with bacteria as a pollutant

(# waterbodies

____

x 10 points)

__________

ii. Waterbody with aTMDL study for bacteria

(# waterbodies

____

x 10 points)

__________

Segment 4 Total

______ ____

5. Score 15 points for each of the following that impacts the beach based on impact guidelines: i. Stream flows, not related to rain event (may flow intermittently) (# stream flows ___ x 15 points)

__________

ii. Malfunctioning Subsurface Wastewater Disposal (i.e. septic) Systems (# malfunctioning systems ____

x 15 points)

__________

(# units

___

x 15 points)

(# marinas

___

x 15 points)

  • iii.

    Overboard Discharge Unit (OBD)

  • iv.

    Marina

__________

__________

(# fields

___

x 15 points)

(# pipes

___

x 15 points)

  • v.

    Mooring Field

  • vii.

    Stormwater Pipe or Drain

Segment 5Total

__________

__________

______ ____

51

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