On Sunday May 6 from 3-6 pm Friends of Penobscot Bay will be doing a core sampling project in the Stockton Harbor intertidal flats between the Sears Island causeway and Kidder Point. See aerial photo below.
This is a follow up on our April 22nd examination of the crumbling waste slopes of GAC Chemical Corp that found that alum-tainted waste spoils continue to erode from the shore and into the clamflats along the shore
|GAC-tainted clamflat in 1998. Time to look again.|
Weather Service says Sunday afternoon will be sunny and in the lower 60's. Feel free to show up at any time over those 3 hours.
For location, see "contaminated flat" site in attached aerial photo. Parking is available at the little red asterix or along the Sears Island road.
Note the dug up alum-tainted intertidal mud that we are looking for. In 1998 DEP guessed "about an acre" is contaminated.We'll be taking another look
What is Core Sampling? Core sampling consists of pounding a 1 inch wide piece of PVC pipe about a foot into the mud, pulling it out, then pushing the sample out of the pipe with a wooden dowel onto a flat surface. There it is first photographed, then samples taken from the different colored strata. Then the sample is crumpled and sluiced with water to see if any amphipods or other life is in the mud. (cont'd below aerial photo)
Then we proceed twenty paces further in the line of sampling and repeat. By keeping to a sight line we can then map out a general idea of the extent of the gunk, then fine tune it later