11/10/1988 CONSERVATION COMMISSION Minutes

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Conservation Commission November 10 , 1988 Page 7. Hanscom 'speakin , continued: ' going to a lot of sites, we' ve had a lot of retaining walls core in after the fact to hold back soils after putting in that much fi I 1 and so,m thing, whether vegetated or a retaining wall , obviously has to be done. Lindholm: A one on three slope, sand slope base, with a barb mulch on it is going to be adequate as long as there is not a point source discharge in one spot; but the sheet flow, bark gulch will holA up on a one on three. Baylog: You obviously don' t want grass back there so you would be looking for a series of indigenous species and I have the list. le Hanscom: With bark mulch all the way down, you' re still going to get bark mulch in a good storm -e-vent} that' s not going to do anything. a tog: ' We can give you a list of -planting locations along this slope. ehrman: We would want a planting schedule- also- because if we give permission for that amount of fill , we' re certinly going to want that mess stabilized before people start digging and building houses; .a y certain amount of preventative plantings and also, what find of f-ill you are proposing to put in here. Baylog; It is to be excavated' fro -the-;babel:ent,� clean sand. Jacobson : What you excavate from the basement is going to do all that` feet? Ba +log= It will cover po i nt i ngy to plan) her=e to here. Behvman: Could you give us the squat e -footage-' com i n g out -of ,he basement? Bay l g: If you wish. Behrman= I would, like to see -that : ` ul l it th se contours , firom here. - .Baylog A lot of �#� is really g shin foot 'contour mere,- rou have a Behr.nr.an- You .say you' re p g very small space here, I really don' t see- i t Baylog* All right, that really has to be addreed. Lindholm: I 'm not sure what the x i slue'-i s. - • ' comp"atib"le the site Behran* I would like to no if - the ��I l �s p - Lindholm: .It would be agreeable} to con litfon-that it would, be to a-1 material from the -immediate area. Behr an: kAround here-, that can also mean' .a. variety of t ins because ti there- are huge pockets of clay. arra 5-10 feet� away, pure whitt - sand and ti as we' re ta.l� ing drainage char ct -ristics, particularly around the basin.. .that' s a c ncern. o f fe-y: Ray I ask the purpose of the i I os'op y of the fill Is Ahl to allow- for the drainage basin to a basin or is this{ for a gentle slope off the back of the house? I ' d also like to know the adjacen t