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Osera-tion Commission <br /> November ember l 1, 1988 <br /> Page 30 <br /> Baylo : The original Notice f ,Intent `was filed t Ions time ago and <br /> then put on hold pending legal issues. r ba ;ly, we have euro1 gyred- r <br /> since then as far as thi's proiect and with the reSu at ry le-vel that. .1 <br /> think you are adressi g this asue, We will be willihS to provide th <br /> i-n or ati n as far as the type of catch basins.- I do not think this, <br /> requires a new filing. <br /> Hanscom: No, I ' m not saying a new filing, ju t +-b i ng' in a119 the addit- <br /> ional, <br /> ddit- <br /> ion 1, information. <br /> ation. <br /> Behrman: CopyInS it to DEQE as part of the Notice. <br /> Ba l og* i' ht w For t h type f storm ent-,. I be l i' ve it was des i gnd <br /> for 2 yea �43; the leaching were designed at minutes per in-ch Which <br /> is a rad i dal difference from what the e i st irg soil i s. i can show- you <br /> pert te.-s4ts that were done all over this arep as far as porosity i <br /> concerned- and At. is very porous, clean-, rand thi ou - gout mo t the <br /> subdivision.. <br /> Lindholm: It is a copse v t i ire l y de-signed system, but- that wAs a re� , <br /> cru i re e t when -the subdivision went through. As she (Tina) was saying, <br /> 25 year storm based n a minute pert , what that' oing -t mean <br /> i that very - rarely, calculations would have to be very specifically <br /> doge to. tei l you thinSs like when and what is the occure ce that this <br /> overflow is, ,Soros to work. When I went out there and loos ed at it, it <br /> appears to me that it very infrequently, if at all , overflowed the <br /> catchy basins and the anho 'Les since this sytem has been put in placel <br /> are suff icient to leach the runoff and it Starts to o erflow at some- <br /> thing like a two to five year storm occurence. <br /> Behr an; You can do the calculations and show them to us . They should <br /> have been done at some point for the ;road- desi=gn any way , ' <br /> Bay 1 o,S: I think they are somewhere back i the road +des i gn file-. - <br /> Lindholm: <br /> i1e; -Lindholm: The ' way - they were done before is the 25 year- storm with a <br /> 20 minute pereg rate for the 'entire system . <br /> Co f fey: - I presume the 20 minute Pero is to allow for hyu an nature' end <br /> the fact there isn' t a maintenance schedule as.5i ned to these things y_ r <br /> til eventually with siltification and rains we' ll end -UP i h a� . <br /> minute perc again. <br /> Baylo : If they' re not maintained, that" s true. <br /> Hanscom: That' s s an ther question, -are these roads going to continue t <br /> e private? <br /> Lindholm' No, the intent -1011 wou be that they would be turned over. <br /> Behrma : II the Town would vote to a c t them . What in' d of a guar- <br /> ante is here that these drains are Soros to be maintained until 5uch <br /> + ' int in ythe . future? <br /> Lindholm: RiSht now, we' re responsible to maintain the roadways. You <br /> could put that in the Order of Conditions, As Jons as we' re -responsible <br /> for the maintenance of the roadways, we wouldn' t have any problem with <br /> that ; being responsible -for a maintenance schedule . <br />