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2004-10-01 WSWCD Review Rx Date/Tile OCT-04-2004(ION) 14;50 10/04/04 15:01 FAX 320 229 .301 SEK 320 229 4301 .. .~ P.D02 iii aoz/ou WRIGHT SOIL AND WATER CONSERVATION DISTRICT Oc:tober 1, 2004 Todd Udvig SEH . 3535 Vadnais Center Dr. St. Paul. MN' 55110-5196 Dear Mr. Udvij: R.E: Prairie Run 306C Brfghton Avenue Buffalo, MIMesota 55313 Telephone (783) 882.1933 682.1970 Fax. (763) 682-0262 We have reviewed the supplemental information pro~ded to the TEP and have the following commentS and concerns. 1. There was no documeutation aloq witli the ahematc plan showing DO wetland impacts. They should either build this plan and avoid wetland impacts. Of provide docuO"'entation as 10 why this plan does not work. This is to fulfill sequencing requirements in Chapter 8420.0520. 2. The stormwater calcuIatioDS presented do DOt consider the water coming in wm offi;ite .througb the culvert tmder County Road 19. This culvert dnains a DNRProtcaed water. . and has tbe potc:ntia1 to introduce 1qc amounts ofwater into the stormwater system. We understand that tbiJ water will go throughlDOther stonnwatcr pond on the adjaceut . commercial site to the east. however the water should be accounted for in the ItOrmwatcr design for both systemS. We are coaccmed that the pond may not operate as clesipcd beeausc of the velocity of t10w tbroup the pond and the possibility or resuspending . scdimODt. . 3. Vf.~ e: feel that the !.Ource ~J~1~lo.8Y tq-'!1~ ~~rm. ~.P.1~~~~ . --hIS . adeqUately addressed. The ~ calculations provided do not present pro- coDSt1'UdioD. coDditioDS SO we caDnOt ~ pre ~ post conditions.. We believe that the remainmg sections of ditch will likely route water away from wetIuds and mitigation areu. We think consideration Should be given to the possibility of closi'dg up the rcmaipinS ditch sec;tiollS to allow water to flow through the cotire wetland IRa rather thanjusl alons and out through the ditch. 4. The ditch section flowing to the aJIvert UDder luon Ave is quite deep and contours were DOt vial*ble on the p1an. We would like to see JDOr'C detail on the pond outlet structUre in this U'CL We woukl also Jib to mention that it may be necessary to considet outJottiDB this pond to the wetland to ptovide additional hydrology. dependiq on what the calculations show ibt IOUtCC of'hydrology. The water soiDS to this pond previously went to the wetland, but is now proposed to bypass it stJ3ight to the ditch. .. - .. EXHIBIT I c 9001200 'd 99:8l (nHl)900e-~0 ^~ ... .. Kx Date/Tile OCT-04-2004lMON) 14:50 10/04/0~ 15:01 FAX 320 229 .301 SEH 320 229 4301 P.003 iii 003/0D3 ". Mr. ToddUdvig October 1, 2004 Page 2 S. I belieVe the City of Albertville hiss a Wetlmd Buffer Ordhlancc that is not reflected in the plan. 6. We would also like to sagest to the city that the ~1.11d~ mitigation areas. and . stormwater poDds be c:ontMfted in outlots rather than in individual lots. This would help to prevent problems dow;u. the roed in sevem1 ways. First, consideraiioa should be given to how stol'lDWUer poDds will be accessed for mAiateD8J'Ce. Also, future landowncr'S Will want to access IDd utilize areas of property they own. Oftea, landowners are not aware ofRstrictiom..pl~~.~... Qt ~ .Y.iQ1ate""'t.mIJ:ri~p-~jnt_Q.na11y. . Wo..... , . - . see ~ panicu1ar problem with the three large lots in the NB comer of tile plan. These lots have upland areas located on the other side of the wer111f1ds located on the lots. We feel these lots are highly likely to become a prahl=. to the city for enforcement in the 1Uture. If the city decides to leave these in tots. we feel signs iboWd be placed at lot comers of wetland, buffer, or pond easement edges. . Also. deed restri~OIlS .and declaration of restrlc:tioDS ItDd covenants should be cocfirmed before my lots could be ~1d. 1. One final. but most important note of caution. Our oftice twnAin!l concemcd about ,the flooding poteadal with reprds to'ditch 9. We h1M: seen this whole area back up and flood whcD ditch 9 backs up. We think that the city should do a comprehensive hydrologic study of ditch 9, including everything that drains to it. to detc:nnine flooding potential and review possible opportunities for remedial measures. Sincerely, ~ ()JLv- Colleen Allen Resource Conservationist _ _~:_~~~1g, S~, ... _ . ~EJdov, Svoboda Ecological ResoUrces Bandy HedIUDd, Hed1uDd EDgineering SWQm' ELLlO r1 1olF. NORlCl<SOM ~.N1 r:1.fll.ll.:' \ItIt .....-,._..411 .""'w-.,-----..