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HomeMy WebLinkAboutSite Plan - Conservation (237) t'3 So:i 340 broad Street J-';'-'-ad!br MC 06095 Phan^ ")881 .J.946 L�i:•z._i Y., !.a:`ly C I e> -car t' .;a lj.i.ey Estates tes Box 6 Sc—,,t'r Wiadsar CT 05074 Baa:_ Mr. Braender c _rice receivi'iig your letter of 1/29/82, 1 have had contacts with toLr_i <)_...ic?_a'__ on the p-_op.mrty adjacent to the Pleasant Valley t;s�.ites. T!, oz, concern are moving along i-n an. oL Z^_ri_`j 1aSh1On. Our OT %Ce CT.ill be in pOS tiC? I to evaluate a general design or a detailed r_ des:.gi� of any prapo,'al for land--use chance on the property south of Road, Nutmeg Road and north of South _an:,-l_te .etc_a d. '.s lonc— �-:.s a devei_op-».nt planIs proposed to be st.b-muted, ._ ;'C ??i.( 'C7e T7; 1.t 1=0 eJil date 1.1: CatllE';_ tC1aT1 develop C J 1E i" ril;;:+.Oi�. \J 7_ 1101.. will "ClC'E_' Ls Oz extra c T,d S'`JJ1t^i R r 1 7 .�o P t 1 ..t c.-_'.t__:�:!. .c1-.�Jy �J�� _,:�`E'. c� p0 _ y to d^JEjOp cons c 'Vt?.'+:10_s TJlar<; 10.,_ i ?.0 _ 7v -Che lando ne c's or Ope :'�O r•: ra s Dnel.rised at'' i-e soil and d? ._a p_ _tl`_ O_ r ( � ,- _, 3 a��e$ e. __.ai a?'y CSC`.C:�.l07Ta=nt. 7 hc;.)e this info-ririation Will be of help to you. - C c e r e_''' ac erva IL ion is - J. i.: M rv'i.••:} �. V. `t. t a 3 .t7'.,i. i ,.Ji ':1E; b . 7 , :.f ,1 , yy .,f .A,. '.t. ( r".;d{.; 'r t, .Y. „*r I {? +,a A ., •,� r'.i N•s ,t I S >r T 1 . r3 q 1 S .. ,.- ,',f -,� n.:,, <' .:r.,.r- i :gin .ti !:It, d'" t ,, ,b, r S. `f l , P:., >. 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'Y- S k' F i . .+D •-` 7 A 1.ri' l J;.' !A 'k: ..� .+'' ! "'.' ':I t •t t�. 1 :i,l r' 2 ,7,' pp�� `n� 1,,. ,i• ,1 ." �. II' rt i D S ) 4 •+1' , 9 A. A +, ', 'iC'I Y{. •13 ,� S it{+ '! a t T a+ .a !? r,,, 1 D ,, ,. x a i ez 1 M' ,e •O O t h+ :I :i r t(y.. 1 I :A, ;Y ti -.'I ! r,� S,'. {,' I ( � I - r �' , v Y , MJ C�� .41 'i.,t. $` . d. ) 0. r , ; t s ,teams ' t ' a Y i J I t( 'A 1 , 1 l "t J , t M 9\I `a 't , ,.: i ? t Iq!+ P b 1i.', 9 i 'S1 t t' i r � .. ' "'# WWa � . ))) ' ENVIRONMENTAL MANAGEMENT COUNSELORS Environmental Management Counselors (EMC) was founded in 1973 as a direct result of a federally funded project designed to pro- vide scientific expertise to Connecticut's towns and cities wrestling with application of newly created inland wetland and watercourse regulations ( P.A. 155 , Connecticut General Statutes ) . A ' consortium. of biologists , ecologists , geologists , soil scientists , and hydrol- ogists applied their various skills to facilitate and coordinate environmental decision-making at the community level . The task was accomplished by advising the various community conservation and wet- land agencies involved . At the end of the 12-month funding period , requests for assistance continued and- resulted in the formation of a private firm - Environmental Management Counselors . EMC provides comprehensive services in the development of a complete site analysis including mapping of site characteristics , engineering evaluation, special feature delineation, geological analysis and aquatic studies, each of which are appropriately documented as a matter of procedure for each site investigation . The following is a sample list of applicable projects that have been undertaken by EMC staff consultants in recent years : 1 . Environmental Impact Evaluation of Industrial Development Activities Adjacent to Tidal Wetlands , Fairhaven, Connecticut. 2. Evaluation of Environmental - Implications of Residential Develop- ment on the Tulip Tree Properties of Darien, Connecticut. 3. Environmental Evaluation of the Development of the Carriage Hill Shopping Center on the Post Road , Westport, Connecticut. 2 - 4. The Environmental Implications of the Erection of Condominiums in Shelton, Connecticut. 5. Environmental Evaluation of Gorham's Island as a Potential Develop- .merit Site, Westport, Connecticut. 6. An Evaluation of the Environmental Impact of Proposed Pier and Pilings on the Five Mile River, Darien, Connecticut. 7 . An Evaluation of the Environmental Impact of Proposed Construction of the Glenbrook Pump Station, Darien, Connecticut. 8. A Review of the Potential Environmental Impact of the Development of Connecticut Park Raceway, Wolcott, Connecticut. 9 . An Environmental Study of Alternative Methods for Supplying New York City with Potable Water in the Year 2020, Connecticut, New Jersey, and New York Segments. 10 . Preliminary Evaluation of - the Environmental Impact of a Proposed Recreational Facility in the Lordship Area of Stratford, Connecticut. 11 . An Evaluation of the Environmental Impact of the Laurel Park Greyhound Raceway , Stratford, Connecticut. 12 . An Evaluation of the Environmental Impact of Proposed Pier and Moorings at Noroton Bay, Darien, Connecticut. 13. An Environmental Evaluation of Site Development Plans of the Tobacco Farms Company for the Suffield, Connecticut Conservation Commission, Suffield, Connecticut. 3 - 14 . An Analysis of Greensfarms Road Properties for Potential Develop- ment as Light Industrial and Residential Areas, Westport, Connecticut. 15. Site Analysis and Characterization for Location of Union Carbide Corporate Headquarters , Danbury/Ridgefield, Connecticut . 16. Wetlands Analysis for Proposed Greyhound Racing Facility, Thomaston, Connecticut. 17. An Evaluation of Site Characteristics, Wetlands Delineation, and Erosion and Sedimentation Control Plan for Darien Dinner Theater, Darien, Connecticut. 18. Tidal [Wetlands and Site Analysis of Location of Island Creek Condominium, Fairfield , Connecticut. 19 . Inland Wetlands Delineation and Engineering of Retention Ponds for Park North Condominium, Fairfield, Connecticut. 20 . Review and Analysis of Inland Wetlands for Brighton Park Subdivision, Westport, Connecticut. 21 . Planning and Inland Wetlands Delineation and Drainage Study for Stoneridge Subdivision, Fairfield , Connecticut. 22. An Evaluation of Beach Erosion for Lordship, Stratford , Connecticut. 23. Flood Potential Analysis and Site Development for Subdivision on the Noroton River, Darien, Connecticut. 24 . Inland Wetlands Delineation and Retention Pond Design for Hedge Brook Estates , Stamford , Connecticut. 4 - 25. Water Quality and Wetlands Analysis for Brook Apartments, Seymour, Connecticut. 26. Water Quality and Tidal Wetlands Evaluation for Schiavone, Inc. Scrap Metal Reclamation Co. , North Haven, Connecticut. 27 . Retention Pond Design and Inland Wetland Delineation for Sheep- hill Condominium, Riverside, Connecticut. 28. Wetlands Delineation Study, Town of Southington, Connecticut. 29 . Wetlands Delineation Study, City of New Britain, Connecticut. 30. Site Planning and Inland Wetlands Delineation for Pepperbush Subdivision , Darien, Connecticut. 31 . Comprehensive Vegetational Analysis of Great Meadows for Stratford Land and Improvement Company, Stratford, Connecticut. 32. Tidal :Wetland Delineation for Bridgeport Airport, Bridgeport, Connecticut. 33. Wetland Impact , Sound Emission Control and Projected Watercourse Utilization Plan for Route 72 Construction, Town of Plainville, Connecticut. 34 . Review of I-291 Environmental Impact Statement for I-291 No Committee , Newington and Rocky Hill, Connecticut. 35 . Additions and Alterations to St. Paul 's Episcopal Church , Darien, Connecticut. 36 . United States Postal Facility, Stamford , Connecticut. EIS. 5 37 . New Haven Terminal Company Assesment Areas Associated With Petroleum Storage Facility, East Have, Connecticut. 38. Environmental Evaluation - Water .Quality and Biological Analysis Regarding Armonk, N.Y. Land Fill Proposal. 39. Review of Connecticut Route 66 - Impact on Hubbard Park and Environs, Meriden, Connecticut. 40. Analysis of Stebbin 's Brook Waters, Ensign-Bickford Properties, Simsbury, Connecticut. . 41 . Environmental Analysis - Darien United Methodist Church Property, Darien, Connecticut 42. D 'Addario Industries - Hoyt Farms Development, New Canaan, Connecticut. i 43-. Bunker Ramo; A Study of Potential Development -Adjacent. to Present Corporate Facilities , Trumbull , Connecticut. 44 . E. R . Strait Marina Expansion - Environmental Analysis of Dredging and Jetty Installation , Westport , Connecticut. 45. The Conyers Farm Development, Greenwich, CT and North Castle, NY- Coordination of Environmental Impact Analysis 46. Saltwater Intrusion Study- Westport, Connecticut 47. Gorham Island-Study of Possible Groundwater Pollution and Saltwater Intrusion, Westport, Connecticut 48. Groundwater Protection Study- Route 77, Guilford, Connecticut 49 . Groundwater n water Study, Burr Meadow Project- South Windsor, Connecticut 50 . Hydrogeological Study Former Famous Artists School Property in Westport, Connecticut d_ PRINCIPAL PERSONNEL "' - s Name Charles Willzari�Dimmlck 7. Y' Present Status: Associate Professor of Geology Central Connecticut State College New Britain, Connecticut Associate Consultant Environmental Management Counselors Berlin, Connecticut . Education: B S _Colorado school of Mines,j 1962 - Geological Engineering M. S. University of Florida, 1964 Geology/Biolo 9Y Ph D. - Tulane University, 1969 - Paleontology Experiences College Instructor of courses in Geologic Field Methods, Physical- and Historical Geology, Geonorphology, Geochronology, -Seismology, Astrogeology, Cosmogony, Minerology, Oceanography and Environmental Geology Geologic Engineer Mobil Oil =Company, New Orleans District Office - ,Well-log interpretation and computer- programming of subsurface geologic information, 1965 Recipient of grant for advanced study, Tulane University ' National Science Foundation - Primary _research interests include hydraulics in relation to inland and tidal wetlands in pre and. post development conditions, soils determinations regarding inland wetlands and identification Of soil/plant associations; Engineering water retention systems and erosion and sedimentation control methodology for application to land and marine development procedures Associate Consultant of Environmental Management Counselors with primary responsibility in wetland soils identification, geological interpretation and engineering appraisal : U pF zunronmentalMe nagemnt Counselors,ine. M 165 Oak Riche /Berlin, CT 06037 203-828-0787 THE EMC COUNSELORS Executive Consultant Leon J. Gorski, Ph.D. : Environmental Scientist/Environment Management Specialist, President EMC1Inc. fr Dr. Gorski holds advanced degrees in Environmental Science om the University of Connecticut and is the Project Manager for EMC's environmental studies, His previous exr ecological research in the United States, Central ane includes America and the development of environmental managementouth techni ues for use in guiding development practices. q As Executive Consultant, he coordinates all aspects of each Project to provide maximum attention to the client's interests. He is responsible for the design of each evaluation and oversees the method of presentation to responsible agencies. Associate Consultant Darr Reed Ostrander, Ph.D. : Water Quality/Wetlands Specialist and Botanist Dr. Ostrander holds advanced degr the Univees from the Universit of - Michigan and University of Connecticut. Y Primary consultive responsibilities : Wetland identification utilizing vegetation, nutrient movement in wetland environments wetland restoration, water quality investigations and interpretation , Associate Consultant Charles Wm Dimmick, Ph.D. : Environmental Engineer and Certified Professional Geologist Dr. Dimmick holds a geological engineering degree from the Colorado School of Mines and advanced degrees from the University of Florida and Tulane Universit itY Oil well exploration and operation,Hseismology,ous experience includes oceanology and hydrology. p ' seismology, minerology, Primary consultive responsibilities: Hydrologic studies drainage computation and retention system design feature delineation and engineering evaluations. ' geological Env ronrnental Evaluations Water Resources Land Use Impact Statennents Pre-planning United States Soil 340 Broad Street 3 Department of Conservation Windsor CT 06095 Agriculture �N1Ce Phone 688-4946 February 25, 1981 TO: Hartford County Soil and Water Conservation District FOR: Constance Eriksson, Chairman Inland Wetlands Agency - Town of South Windsor RE: Savin Bros., Inc. Application # 171 INVENTORY A detention basin to handle 50 acres of runoff is proposed for this industrial area. The detention basin is planned to be offset to the south of the brook on the east side of Route 5. It will generally be in the wooded area, The wooded area is predominantly red maple, a wetland type tree. Generally the woodland is WdA - Walpole sandy loam, an inland wetland soil with a mottled to brown gravelly loamy sand at 22 to 48 inches. A portion of the woods is SsA -- Sudbury fine sandy loam, a moderately well drained soil with a mottled coarse sand and gravel at 26 to 40 inches. A large shallow barrow area exists on the property. It is man made and has an outlet flowing to the west. - -EVALUATION A detailed design of the detention basin will be necessary for a more complete review. If the existing watertable i,s lowered by ditching, the control point of the pond depth for available stormwater storage would be the invert (bottom}, of the culvert under Route 5. It would be best that the bottom elevation of the stormwater storage area begin at normal watertable.. The Walpole soil. is generally going to have a normal watertable close to the surface. The Walpole subsoil has very unstable banks. The detention basin can be used as a temporary sediment basin during construction. It would then need constant cleanout during and right after construction. The barrow area could be regraded and established with appropriate wildlife annuals and perennials for maximum wildlife uses if wildlife is determined to be the dominant land use. The area in its present condition has limited uses. Other considerations for this area may be; fill it in. for urban recreation or agri- cultural uses; dike the area for a shallow waterfowl po-da; or leave as is. To determine if the barrow area is now a wetland should be defined by a soil scientist.Vern Anderson, District Conservationist CC: A. Bowen Davies, Deputy Town Engineer The Soil Conservation Service SCS-AS-1 is an agency of the 10-79 Department of Agriculture ATTACHMENT M �y 1� 1 c ` 1 S f Environmental Management Counselors,Inc. f 165 Oak Ridge / Berlin, CT 06037 203-828-0787 GROUNDWATER CONDITIONS tiw OF THE PARKCENTRE DEVELOPMENT, SOUTH WINDSOR, CONNECTICUT Submitted by: Leon J. Gorski, Ph.D. , President D. Reed Ostrander, Ph.D. , Executive Consultant Charles Wm. Dimmick, Ph.D. , Executive Consultant March 9, 1982 Environmental Evaluations Water Resources Land Use Impact Statements Pre-planning GROUNDWATER CONDITIONS • PARKCENTRE DEVELOPMENT, SOUTH WINDSOR, CONNECTICUT Introduction The Parkcentre Development is an industrial park complex in South Windsor bordered on the west by John Fitch Boulevard (U.S. Route 5) , on the north by Governor' s Highway, and on the south by South Satellite Road. To the east is a residential development • called Pleasant Valley Estates. Both the industrial park and the residential development have a . history of high groundwater problems. EMC, Inc . was asked to investigate the groundwater situation in and near the industrial park and to determine what effect, if any, the activities in the park, past and future, might have on the ground- water in the adjacent residential area. This report was prepared by Dr. Charles Wm. Dimmick, a Certified Professional Geologist, whose background and credentials are attached to this report for informational purposes. Materials used in prepar- ing this report include boring data obtained by Engineering Services, Inc. , Glastonbury, Connecticut (Clarence Welti) in September of 1967 and by Geotechnical Consultants, Inc . (on contract to Durcell Asso- ciates, Glastonbury) in June, 1976. Pertinent data from the boring • logs is included in Table I and test hole locations are shown on the accompanying map entitled, "Groundwater Study of the Parkcentre Development. " gY Geolo and Soils —. The entire area is underlain by old lake bed silts and varved . clays on top of which are 12 to 20 feet of alluvial and glacial 2 . outwash sands. The top of the varved clays is remarkably flat (about 3 ft. variation in elevation) and the variation of sand thickness is mainly a reflection of surface topography. The soils which have developed are a reflection of topography and depth to groundwater. All of the soils show presence of a seasonal high water table. Where this seasonal high water table is more than a foot below the surface, Sudbury and Ninigrit fine sandy loams have developed. Where the seasonal high water table was historically at or almost at the surface, Walpole fine sandy loams developed; and where the water table stayed high year-round, the very poorly drained Scarboro 'loams developed. Long use of the land for agricultural pur- poses included partial drainage of the wetter areas, but this has not changed the basic soil characteristics. Recent construction activi- ties have involved massive redistribution of the surficial materials over much of the site, making it difficult to determine in the field what the original soil conditions were. Thus, for this report, we have depended on the February 1962 Soil Survey of Hartford County, Connecticut and the "South Windsor Inland Wetlands and Watercourses" map of March 1974 for pre-construction conditions. Groundwater Conditions Inspection of soil and topographic maps reveals that ground- water would have been very near the surface, uredevelopment, on both • the industrial site and the adjacent residential site during the wet seasons. Much of both areas are underlain by poorly drained and very poorly drained wetland soils. Groundwater would be at its highest 3. elevation (about 78 ft. ) just north of the playground N.W. of • Edgewood Drive, with the water table sloping -to the south, east and west. Within the residential development, the groundwater would be highest (75-76 ft. ) just west of the north-west section • of Judy Lane, sloping to both east and west. The water table mounds under Barbara Road, sloping away in all directions, and slopes both north and south from the lots lying on the south side of Judy Lane. originally, the slope of the water table to the west was more to the southwest and was very gentle, about one foot vertical for every 300 foot horizontal, or a .slope of 0. 34%. Two man-made constructions have changed the picture. The . first was the digging of the old farm ditch which lies on the border between the industrial park and the residential area. This lowered the wet season water table as much as three feet in the vicinity of the ditch and Newberry Road. Except for those homes within 200 feet of the ditch, it would not have had a significant effect on water levels within the residential area. The second change was the excavation of the area between the old ditch and Newberry Road and the construction of a new ditch. This has dramatically lowered the wet season water table on the • industrial site, in some places by as much as six feet; but the effects would probably not be noticed in the residential area except for a slightlowering of water levels in the backyards of • the two homes just south of the playground. In summary, none of the activities on the industrial site have raised the water table on the adjacent residential area, nor have 4 . • they contributed to a significant lowering of the water table more than 200 feet from the actual construction. Groundwater Fluctuations • Both the wetland and non-wetland soils in this area are subject to dramatic seasonal and longer-term changes in groundwater level. It is not unusual . to find an area of Walpole soils with water at the surface in early April and the depth to the water table six feet down in late August. Both shorter-term and longer-term fluctuations are also common. Standpipes placed on the Parkcentre site by Palm- berg and Russo. show the water table rising one and one-half feet in a week after a period of heavy rainfall and dropping one-tenth of a foot per day thereafter. on a longer term, groundwater levels were very low throughout Connecticut from 1957 to 1964 , were very high in the mid-1970 ' s and dropped dramatically again in late 1980 through . August of 1981. At the time of this report, groundwater conditions are close to normal. The problem with these fluctuations is that they are of the _ same order of magnitude or larger than the changes due to construction and thus would mask the effects of construction. • Future Construction Plans for the Parkcentre site include partial filling of the area previously excavated. As long as there are underdrains placed • under the fill and the fill is mostly free-draining material, there should be no significant adverse effect on water table levels. • Table 1 Testhole Data used for Parkcentre Study Ground Ground water Elevation Hole No. elevation elevation of day Date drilled • to-3 74 70 61 . 5 9/l/67 W-4 72. 5 68 . 5 58 . 5 9/1/67 W-5 72. 5 6.9 58 . 5 . 9/l/67 W-7 77. 5. 72 61. 5 9/5/67 PV-2 (1) 73 69. 5 58* 6/24/76 PV-4 75 71. 5 61 6/23/76 PV-101 74 70. 5 ?** 6/24/76 PV-102 (2) 72 66 59 6/24/76 Holes with numbers starting with W were drilled by Engineering Services, Inc. (Now Clarence Welti Associates Inc. ) Holes with numbers starting with PV were drilled by Geotechnical Consultants Inc, for Purcell Associates. * Hole stopped at 15 ` without reaching clay. ** 10-foot hole depth l) Two feet of fill; original soil level 71 ft. elevation; wetland soil type• (2) Four feet of fill; original soil level 68 ft. elevation; wetland soil type• Water levels in September 1967 were receded two p p by t months of relatively dry weather, but heavy rain August 26th - 27th. Water levels in June 1976 were preceded by a normal spring with no early drought. . Name: Charles William Dimmick Present Status: i�� Associate Professor of Geology Central Connecticut State College New Britain, Connecticut Associate Consultant Environmental Management Counselors Berlin, - Connecticut Education: B.S. - Colorado School of Mines, 1962 -- Geological Engineering M.S. - University of Florida , 1964 - Geology/Biology Ph.D. - Tulane University, 1969 - Paleontology Experience: College Instructor of courses in Geologic Field Methods, _ Physical and Historical Geology, Geomorphology, Geochronology, Seismology, Astrogeology, Cosmogony, Minerology, Oceanography and Environmental Geology Geologic Engineer - Mobil -Oil =Company, New Orleans District Office - Well-log -interpretation and computer- programming of subsurface geologic information, 1965 Recipient of grant for advanced study, Tulane University - National Science Foundation Primary research interests include hydraulics in relation to' inland and tidal wetlands in pre and post development conditions, soils determinations regarding inland wetlands and identification of soil/plant associations, Engineering water retention systems and erosion and sedimentation control methodology for application to land and marine development procedures Associate Consultant of Environmental Management Counselors with primary responsibility in wetland soils identification, geological interpretation and engineering appraisal October 27, 1981 South Windsor Planning and Zoning Commission Town Hall _ Sullivan Avenue .1'��ia tLP/�akSt ��� 5'LX` South Windsor, CT 06074. Dear Members of the Commission: As some of you are aware, the water problem nusiance for residents east of Park Center has been an ongoing problem since before the spring of 1973 . This is a matter of record in the Planning & Zoning records. For example, we refer you to pages 1861, 1862, 1863 and 1864, 1889 and 1890, e' The problems have not subsided; if anything, they are getting gorse, par- ticularly in the spring and fall and are, to a great extent, a function of the rainfall coupled with its intensity along with the direction from whence the rain comes._ Water in the cellars and property sink holes correlate with the twenty-four rainfall figures for South Windsor. Percolation in parts of the area is not good. Furthermore, the water table appears to be rising even though the sewer lines have been put thru. Connection to the sewer system has prevented septic tank flooding but does not eliminate the inherently high water table in the wetlands area where some of the houses are built. Water in the basements is not eliminated. -Several years after the houses were completed in the Westwood Park Section of Pleasant Valley Estates, the land immediately west of the residences was pushed around and created more problems. Drainage ditches some of which were established over 100 years ago were filled in, berms were built and the natural drainage patterns were molested. When the records and aerial photography of the Park Center and Westwood Park section were studied and examined at the Soil Conservation Survey office in Windsor with the help and assistance of the Hartford County SCS and State Water Resources personnel it became much more evident why some of the problems exist. In fact, it could be said that some of the houses in the area probably never should have been built in the first place. Drainage has to be improved and the water table in the area must be lowered. The SCS has offered the services of Mr. Vernon Anderson, Chief, District Conservationist, to walk the area with '!Buck" Nere Bow Davies and three of the interested residents on Friday, October 3btfi for the purpose of reevaluating the area in the light of what has been done in the past and ghat is contemplated for the immediate and longer range future. An updated study of the area including wetlands in question is certainly warranted . t 2 Therefore, on behalf of the Pleasant Valley Estates Residents Association it is requested that the Planning & Zoning Commission move and approve the request to have this study made beginning with "walking the area" on October 30th as outlined above. Your help and cooperation in undertaking this study:-'is appreciated. We would anticipate that the study and recommendations would be the basis of preventing any further worsening of a water problem in Pleasant Valley Estates as well as to the west downstream along Newberry Brook and the Main Street area. Respectfully submitted, Pheasant Valley Estates ResidenU Association W. Philip faender, Jr. WPB3r:nc President Mailing Address: Pleasant Valley Estates Residents Assoc. Box 6 South Windsor, CT O6074-0006 Telephone: 203/289-7456 luo FUSS&Q`NEILL consulting engineers November 23, 1981 Mr. Jules E. Page Town Engineer Town of South Windsor 1540 Sullivan Avenue South Windsor, CT 06074 RE: Proposed Hydrogeologic Study Vicinity of Park Centre Industrial 'ark Dear Duck: In accordance with our previous discussions, please consider this as a proposal to perform consulting services in connection with a study of ground- water fluctuation in an area generally illustrated on the attached map. It is the intent of this proposal to utilize to the greatest extent possible the personnel of the Town staff. The _scope of services presented below indicates those items that could most appropriately be carried out by Town staff. STUDY OBJECTIVE 1 To develop an opinion of the impact of development in the area of the Park Centre Industrial Park on the groundwater levels in the residential area im-nediatety to the east. 2. If appropriate , make recommendations as to measures that could be implemented to reduce problems resulting from groundwater elevation. 3. To recommend methodology for monitoring future groundwater fluctuations. SCOPE OF SERVICES (C) Indicates Consultant (T) Indicates Town Staff A. Data Needs (Within Study Area - See Attached Map) (T) 1 . Locations of all sanitary sewer liners and water tines and facilities connected thereto. 210 MAIN STREET / MANCHESTER, CONN. 06040 / TELEPHONE (203)646-2469 SOLID WASTE MANAGEMENT*WASTE WATER 5'rS1EMS•ERCS101.GON"ROL s WATER SrSTEMS o HYCROLOGY and D^AINAGE SYSTEMS a SITE PLANNING HiGHWAYS and FRIDGES 0 SURVEYING o Lr.tDSCAPE ARCHITECTUPE a TRANSPDRT T:iO!!2,11 TRAFFIC 9 PUBLIC WORKS MANAGEMENT s HYDROGEOLOGY FUSS&O'NEILL Mr. Jules E. Page Page 2 November 23, 1981 (T) 2. Approximate location of any water supply wells. (T) 3. Storm Sewers. (T) 4. Soil borings taken as part of the sewer program or other development. (C) 5. Surficial geology. (T) 6. Development history B . Homeowners Inventory (C) 1 . Prepare questionnaire for home owners east of the industrial park requesting pertinent information. (T) 2. Obtain home owner list, mail and receive replies. (C) 3. Analyze replies and plot on mapping. C. Monitor Wells (T)CC)1 . Install shallow monitor yells in 4 to 6 locations utilizing Town backhoe and monitor well material by consultant. Use of continuous well level recorder (provided by consultant) to monitor groundwater response to storm events. (T)(C)2. Install an additional 2 to 3 wells once analysis of available data is completed. D . Survey Needs (C) 1 . Elevations of free water surface reftecting water table. (C) 2 . Monitor welt elevations study phase. (C) 3. Monitor well elevations post study. E. Mapping Needs (T) 1 . 1 "=200' scale map indicating current development. It would be desirable to have a 2' contour map. This would serve as the base map. J u FUSS&O'NEILL Mr. Jules E. Page Page 3 November 23, 1981 (T) 2. On the base map, superimpose data compiled in A above . (C) 3. On the base map, plot groundwater elevations obtained in B above and develop an inferred water table contour map. (C) 4. On the base map, indicate problem areas and, if appropriate, remedial actions. This could be combined with E3 above. F. Data Analysis & Recommendations (C) 1 . Review all information gathered and develop opinions as to groundwater impacts resulting from industrial park develop- ment. (C) 2. If appropriate, make recommendations for possible actions to reduce impacts. (C) 3. Prepare long range rrn.Dnitoring program to be implemented by Town staff. G. Report (C) 1 . Prepare a concise report with accompanying graphics that details study metnodo!ogy, site geology, analysis and con- clusions. (T) 2. Print report and distribute. If the work were to be apportioned in the manner described above, it is estimated that Fuss & O'Neill could complete its portion of the work for a lump sum of $7,000. Hopefully, the above reflects your thoughts on the method for approaching this interesting problem. ShDuld you desire, this matter can be discussed at your convenience . Very truly yours , Walter S . Fuss, P.E. WS F/j tz Enclosure /� I/,c, ` `O° y Q I l,i ;I �.�. o u l j•'� 1 1� �• ,� 0\5 � /'•' ` �► ,.,t��� � 09 • SOP �' � ( rl� 1 �` •�. ' � u �t .�' '�- ON , r f -ems,,, E+ °�� � �? (>� r ( ' N �• � � � .. . _ •�• .• /r�1 1. r ll //^pU, V,. � � �r( •�y 1 ) 10 ' •.� 1� Ifs( -�ay� �1 i1 I :°�, � •� .�-_.,� '•\\ i�!/ �',��s li C/ ,�Z 0y) •3 ` � �,i !I ��l\ � ..j `V /•\ .\ '.I�•J \ !1 1; I� / l I IA 60 '� ' �:J } / �,�a �)�' r � I' �.; (� � •.; • ,\, '-'v gel.U .. �f'I' -._.___. p 0 • ili. r '{ ) � ;/. i,• �/,' �+ �° t :\ >/� �\ >\ y r �� `, I: n �S•.•�. �i 1 tH l •o .e ~ �X i I ~` O•�. �� 1 •/i' `..; q r,v\. „ , � \`'I I) MUD .ti,•• r��...,;i'.� .. 1. .i•�\•�. 1 1 l ' • ' I kA c � ji. ••. �'� \. ��� 0/i��� '�r� i, it / '1�1 �ir°� �-- � ��, /1(')� �1 � � �a'lr r (w.�• :01 ,.I� �/3 ICI r0 0 bt iio OA u •ti / 1. rA /i I A. I�z 1 " , A,. �!"'..,,• rI f � �! .,n •f� ~a �,. �., .-t='.-d n .% �l/0 � � ,)• � � L., � � i .:`I:�L:.. :: N 301 HARTFORD AVENUE . P.O. BOX 11446 NEWINGTON, CT 06111 (203) 549-3200 BROS. NC- December 15, 1981 Ms. Constance Eriksson, Chairperson Inland Wetlands Agency Town of South Windsor 1540 Sullivan Avenue South Windsor , CT 06074 Dear Ms . Eriksson: At the December 8, 1981 meeting of the Planning and Zoning Commission, I informed the Commission that I had retained a highly competent engineering firm to perform a ground water study in the Parkcentre area. I offered to make the results of this study available to the Commission when it was com- pleted. I very clearly stated that they were welcome to utilize these results as a partial basis of determining what further information, if any , they would require. In no way did I intimate that they should consider the study as anything other than additional input relating to the matter. I am cer- tain that the Commission understood this quite clearly. I had fully intended to appear before the Inland Wetlands Com- mission at the meeting of December 14, 1981 to make the same information available. However, due to a previous business commitment , I was unable to attend. Therefore , I am taking the liberty of writing to you to inform you of the above facts. At present , I am planning to attend the meeting of January 11, 1982. If I can provide any further information to you prior to that time , please do not hestitate to contact me. Very truly yours, SAVIN BROTHERS, INC. R. G. Kaye Director of Development RGK/mmr �10WN Sf 44 Town o-P SotdA ?A�� C � U 1540 SULLIVAN AVENUE • SOUTH WINDSOR, CONN. 06074 SOR-C AREA CODE 203/644-2511 OC� Mr, 'i3obort G, Kaye airin arcs. y Ines Newington, onneeticut 0611.1 Dear Mr. ' ,ye! The Tn3.snd 't,etlmds Agwwy has now applications to review and receive at its Jamary 11 th. meetbig. 1n addition.we would like to have the opportunity to revie)w your .lettor and proposn.? at they time►prior to meeting with you. Oherefore, we request that your discussion with urn be postponed until the janwry 1%3 th. meeting. very truly yours, _ .s...w..•=..�.may.,-,,.,-,..,. .,.:- r clonstsnce :riksson; airmRn .n1wtd Wetlands Agency '- (, a '!> 'M WIND OTC CBS chm cat .A. Dowen Davies, Deputy Town Engineer United States Soil 340 Broad Street Department of Conservation � Agriculture Service Windsor CT 06095 Phone 688-4946 January 20, 1982 Constance Eriksson, Chairman Inland Wetlands Agency Town of South Windsor 1540 Sullivan Avenue South Windsor CT 06074 Dear Constance Eriksson: In response to our phone conversation today I am listing the items that the Soil Conservation Service Windsor ;Field Office can provide assistance on the land area south of Newberry Road, east of Nutmeg Road and north of South Satellite Road. 1. A conservation plan for the existing pond and surrounding open area if the area will remain undeveloped. 2. General Engineering information for deepening and widening of existing ditches or for any new ditches. The control point as to the ditch depth will be the invert (bottoms of culvert) under Route 5 to the west. 3. A site evaluation of the open area if it is going to be developed. The soils of the residential area to the east have been mapped as to drainage, kind of soil and slope.. The development is established with some of the homes and lawn areas being located on wetland soils. Wet problems existed for homes on the wetlands right from the beginning of construction to the present. If the water table is lowered the pro- blem will still exist if the drainage course becomes non-functional. 1 hope this information will be helpful in clarifying our assistance for tfias land parcel. Sincerely, Vv _ 'Tern Anderson District Conservationist O`JThe Soil Conservation Service SCS-AS-1 is an agency of the 10-79 Department of Agriculture SOW N 3£q` - ) O � a p U • �� 1540 SULLIVAN AVENUE SOUTH WINDSOR, CONN. 06074 l�oSOR-CO AREA CODE 203/644-2511 January 25, 1982 r,vrn Anderson, District Conservationist US A% , '-oil Cons ervati37 Service 340 Taro-=d street '. indsor, Connecticut 06095 Uea- �rern Anderson: In your letter d-_ted January 20 , 1982, you referred to a conservation Flan for the existing pond area. Vould you please clarify for the A-ency,what specifically this plan would include? Thank you Very truly yours, Constance Erikssor.4 Chairman Inland d etlands ',--ency 1: c h A_ United States Soil 340 Broad Street Department of Conservation Windsor CT 06095 Agriculture Service Phone 688-4946 January 28, 1982 Constance Eriksson, Chairman Inland Wetlands Agency Town of South Windsor 1540 Sullivan Avenue South. Windsor CT 06074 Dear Constance Eriksson: This letter is to clarify Item 1 of the 1-20-82 letter to you for the land area south of Newberry Road. - The conservation plan for the pond and surrounding open areas Mould generally consist of:- - Pond management after the use is clarified, such as for fish recreation or waterfowl. This could include. establishing aquatic plants for waterfowl, deepening the pond for fish and/or recreation uses. It is possible that an adequate depth may not be obtained if water-bearing fine sands are encountered. seeding of all unvegetated areas - wildlife plantings in area surrounding the pond for upland animals and birds - clump plantings of trees and shrubs for wildlife-recreation uses screenings and buffer strips nature trail and study area for environmental classes other related measures to fit the land use of the area Sincerely, Vern Anderson, D,C. oVThe Soil Conservation Service SCS-AS-1 is agency of the 10-�g Department of Agriculture y F f V c-ci J [� lJ����i�1���� t W • w� 1540 SULLIVAN AVENUE SOUTH WINDSOR, CONN. 06074 fNd AREA CODE 203/644-2511 SOR•CO� �i'ebruar-r 10, 1982 'Tern n,.er `or_, Ulstri C OnSer�l ati CniSt -' "oil on..c ervati on er rice 140 ro.a,d `street ':inisor, t. 06095 :,ear `Torn ",.nderson: in response to your letters dated January 20 th. _=.nd L -nu=ary 28 -IV-h., the inl_--nd etlf:!nds � .c_-ency requests an evaluation Of the current situation on the _)ro-?erty bordered by the area south x,e::;berrvr goad, east of I utrrae^ ;o '^ outh satellite -.oad. Also, is it .os-LUle for you to -live a site evaluation of the area, if it is to be de,relo-oed, without a s_plecific proposal, if so, si.dl.y for';rard, this information to ut, too. if you have a.ny questions regara i n- this request, DleaSe call either B. 'navies, or 1-:1e. ,,ery truly yours, Constance rinsson, 'hir. ran O U.1.1 1 1 1.�S pi a . ch 1 cc : A. . Da ,1es, ,.e)utu 1oim .,,'ngi e.r tpW N SE•R A < 07 o V/u'O C� fir/1V t � ?d&U&Ot a _a 9 w� 1540 SULLIVAN AVENUE • SOUTH WINDSOR. CONN. 06074 soR•CO AREA CODE 203/644-2511 m� -,ichard Ryan, o-. n council �,i ai son "'onstance rir sson, Chairrman, .inland = ency February 10, 1982 C+UP,J��T. ; t ?'i 1';" -�!'Sl �If l _r,_..j f_.a:s any progress been. -.ade re ar''ing a Co:"ibined 11ieeting '.%i th re"� resentati Tes 0� the 0Ot•:'n vol-mcil, _lannin_? and uOnin' o7!1mii ssion, rrU :jer v0 " :;i fiSi On and Inland .'etl ands -Igency to discuss the cone erns o ' the resid--nts in the <'leasant : states area? all ,::l ease 'keep the 1nfOr_;e`, �pW N Sfq� 7 vw 0 PIS -M ?db 1540 SULLIVAN AVENUE • SOUTH WINDSOR, CONN. 06074 J�dSOR•CO AREA CODE 203/644-2511 February 18, 1982 Mrs. Constance Eriksson 18 Birch Hill Drive South Windsor, Connecticut Dear Mrs. Eriksson: Because of the lengthy discussion by your Agency at the January 18, 1982 meeting about the groundwater and other problems near Park Centre, I feel you should be aware of my feelings on the subject. 1. The groundwater problems have been discussed at Planning and Zoning Commission meetings. 2. The Planning and Zoning Commission asked what could be done about getting information on this matter. 3. I approached a professional engineering firm (Fuss & O'Neill) who have done extensive groundwater studies south of this area for their input. 4. A letter was prepared by them on November 23, 1981 and presented to the Planning and Zoning Commission on December 8, 1981, outlining the scope of a proposed study. The study would be a joint effort between the Town and the consultant and I consider this to be very important. 5. I did not recommend going ahead with the study at this time because of bidding considerations, and felt it needed to be reviewed in more depth by the Town before discussions could be made. (i.e. , priorities, scope, etc.) 6. The study by Savin Bros. Inc. , while it may provide valuable information, will not replace the need for the above Town- sponsored study and cannot be used for Town discussion regarding implementation of possible corrective measures, except as proposed by Savin Bros. Inc. on their property with approval of the rightful agencies. Mrs. Constance Eriksson February 18, 1982 Page Two 7. Because of the high work load, not to mention budgetary limitations, of the Engineering Department in the next few months, a priority assessment on this would have to be made versus other town problems on where this matter should be placed. Please feel free to talk to me about this at your convenience. Very truly yours, TOWN OF SOUTH WINDSOR J. E. Page Town Engineer JEP/ml cc: Richard Shattuck Marshall Montana A. Bowen Davies 3ai8 Planning and Zoning Commission -4- 12/8/81 10. This approval .is subject to approval by the Town of South Windsor Inland Wetlands Agency. ri .� 11. A liability insurance policy naming the Town of South Windsor as an insured, and satisfactory to the Town Attorney, shall be submitted in the amounts of not less than $250,000 per person, $500,000 per occurrence bodily injury, and $100,000 property damage. . 12. Surety bonds in the following amounts shall be submitted to the Town of South Windsor to ensure completion of all improvements: . a. For the completion of the roads and parking $100,000 b. For the completion of drainage and grading 200;000 a c. For the completion of the sanitary sewer 60,000 d. For the completion of recreation facilities 100,000 e. For the completion of plantings and buffering 50,000 $510,000 13. Copies of sheets K1, K2, Sl, L1, L2, L3, L4 and L5, reproduced on black and white transparent polyester film, along with three paper prints, must be. submitted to this. Commission, to .be ,AtaMD and signed. The approval letter of this Commission as well as the approval letter of the Inland Wetlands Agency must be reproduced on the mylars. After the mylars have been stamped and signed by theCommission, they will t be returned to you for filing in the Town Clerk's office. These plans must be filed within 90 days of the date of approval (by March 8, 1982). Mr. Norman seconded the motion. It was unanimously voted in favor and so ordered. 2. Update of Comprehensive Plan of Development/Director of Planning Mr.UeMallie referred to the Commission's letter dated November 17th to the Town Manager, which outlined goals the Commission wished to accomplish, and said that all of the items mentioned in the letter are included in the draft of a work schedule which he passed out to the Commissioners. He noted that work on the Comprehensive Plan would start at the beginning of the next fiscal year and would continue for two and a half years, with time added to hold public hearings. He noted that some of the projects were contingent upon review by the Commission, and added that if the workload of the Commission _ or Planning Department was excessive, there might be a delay in some of the projects. Since the Commissioners had not had a chance to review the draft of the work plan, they concurred the matter should be tabled for a couple of weeks and brought up again in January. 3. Proposed Hydrogeologic Study, Vicinity of Park Centre Industrial Park Town Engineer Page referred to a letter dated November 23, 1981 from Fuss & O'Neill which indicated they could prepare a study which would include an opinion of Planning and Zoning Commission -5- 12/8/81 _ the impact of development in the area of the Park Centre Industrial Park on the groundwater levels in the residential area immediately to the east, make recommendations as to measures that could be implemented to reduce problems resulting from groundwater elevation and recommend the methodology for monitoring future groundwater fluctuations, and the estimated cost of such a report would be $7,000. Mr. Page said the estimate was based on the fact that as much as possible would be done by Town Staff and said the letter indicates by the designation T for the Town, and C for the consultant, the work that would be done by each. Since the project is in excess of $5,000 it would have to go to bid, and Mr. Page said the Commission should write the Engineering Department a letter stating that they wish to proceed. He added possibly the Public Works Department could share some of the expense. Mr. Page said he wanted to make it clear that he was not recommending that the study be done, but was simply bringing it to the Commission's attention. Mr. Mainelli asked why the Commission is even considering this, and Mr. Page said a request had been received from some residents in the area. Mr. Mainelli asked whether there are really a lot of problems in that area, and Mr. Page replied he didn't know. Mrs. Evans noted that this could be affecting the ~� Connecticut River flood plain. �Mr. Page said the area is full of septic systems plus MDC water which makes the ground water go up. Mr. Mainelli said he can think of several other places in Town which are much worse. He added that he's not saying this area shouldn't be studied, but wanted to know what was behind it. Mrs. Montana said that after the request had been received by the Commissioners, they asked Mr. Page to check into the cost of a study of this area. She added that she didn't think it would be that costly to prepare a study of the area. Mr. Philip Braender was present, and stated that many of the houses in the area have problems with water in their basements. . Mr. Mainelli questioned whether these problems existed before Park Centre -. Mr. Robert Kaye of Savin Bros. was also present and said that his company had recently engaged a firm to do a historical background on the ground water flow in this area and suggested the Commission reserve its decision on whether or not to proceed with the Fuss & O'Neill study until after his consultant's report was ready. He said he would be -happy to share the information with the Commission. After further discussion the Commissioners concurred that this matter should be tabled until the end of January. P SONS-7 SOIL AND NATURAL SOIL GROUPS MAP -73 Prepared by -mow (File Code U. S. DEPARTMENT OF AGRICULTURE SOIL CONSERVATION SERVICE ............. CONS-14-5) Cooperating with CONNECTICUT AGRICULTUREAL EXPERIMENT STATION, STORRS AGRICULTURAL EXPERIMENT STATION, AND _ SOIL AND WATER .CONSERVATION DISTRICT COOPERATOR pT ACA,1� [rArz xv �•r�^rs-e pt;t{n r,-�an ,+�n t,- DATE - - COUNTY �A'rFnnn -�. STATE Connecticut APPROX. SCALE '-:')G-.000 SOIL MAP NUMBER 26 SYMBOLS - 324-B-1 or CaB = DETAILED SOIL SURVEY A-la, B-2a, etc. = NATURAL SOIL GROUP Soil Map SOIL NAME N.S. Sheet Symbol Group .No — KnA Ninigret fine sandy loan, 0-33 slopes A•-2 Sea Scarboro loam, 0-31"'810;ses A-3b ~� AfA Agawam fine candy loan, 0-3% slopes h-ld �M: WvA - Windsor loamy fina stand, 0-3% slopes WVB Windsor loamy fine sand, 3-8 a 31OPes A-la VTdA Walpole sandy loam, 0-3% slo ' 1�•-3a F a S � SsA +N A a Ect' r_j dqt }t AfA NnA F VnA (V Se F z SsA� •` r — is i yVciq a.NnA t ��J TERRACE SOILS - OVER SA MIS AND GRAVELS poorly and very poorly drained soils A-34 Soils with a high seasonal water table A-3b Soils with a high water table during most of. the year These soils occur above the floodplafns in river and stream valleys. They are underlain by water deposited beds of sand or sand and gravel. In most places a few inches to 3 feet of loamy or fine sandy soil mate- rial cover the older coarser water deposits. The poorly drained soils in group A-3a have a high water table that remains 0 to 6 inches below the soil surface during the wettest part of the year. The high water table usually persists into early summer and may reappear after prolonged or heavy summer rains. . . The very poorly drained soils in group A-3b have water ponding on the surface for significant periods in winter and early spring. The high water table generally persists within 3 feet of the surface throughout the year. Urban. These soils have severe or very severe limitations for most urban uses. Intensive and costly drainage and land fill. measures are required to overcome the high water table. Recreation. These soils have severe or very severe limitations for picnicking, camp sites, and play areas. However, they have potential for development of ponds and conservation use for environmental enhancement. Wildlife. The poorly drained soils in group A-3a are poorly suited for the production -of openland wildlife habitat. Habitat required by woodland ,and wetland wildlife species can be established, improved, or maintained but moderate treatment is required. The very-poorly drained soils in group A-3b are poorly suited for the production of openland and woodland wildlfe habitat. Dependable growth of desirable food and cover plants is limited by their wetness. Habitat for wet-land wildlife species is easily created, improved or maitained on v' these soils. Woodland. Productivity for wood crops ranges from fair on the poorly drained soils in group A-3a to poor on the very poorly drained soils of group A-3b. The wetness of these soils poses severe problems in the use of equipment, survival of tree seedlings, and windr_hrow of trees. Plant ` cpmpetition is moderate on the poorly drained soils and severe on the very poorly drained soils. Cropland. These soils are generally unsuited to agricultural crops. With drainage the soils in gr oup ou A-3a can e u g b used P to produce silage potatoes, hay, and vegetables. P f Drainage generally is not economically feasible on the soils in group A- 3b. k . f i, TERRACE SG-IS - OVER SANDS AND GRAVEIS Moderately well drained terrace soils A-2 Soils with moderately high seasonal water table r= = These soils occur above floodplains in river and stream valleys. About 20 to 40 inches-of fraible, loamy soil material overlie beds of sand and - gravel. They have a high water table during wet seasons. In periods of highest saturation, usually in the spring, the water table remains 15 to 20 inches below the soil surface. Permeability is moderate or rapid above the water table. Urban. The seasonal water table limits successful year around operation of on-site sewage disposal systems unless special measures are used, such as drainage and land fill. For homes with basements, the water table causes contraction difficulties during wet seasons. Measures such as footing drains are necessary to prevent seepage into basements. ........... F. Soil conditions are favorable for the establishment and maintenance of layrns, trees, and shrubs. The seasonal water table presents problems in the design, construction, and maintenance of streets and parking lots. This may be overcome by drainage : or other measures. Recreation. During the main season of use, these soils have moderate limitations for use as picnic areas, camp sites, and play areas. Drainage is needed to lower the seasonal water table on playing fields for intensive use and. to ey�tend .the period for picnicking and camping. Wildlife. Habitat for openland and woodland wildlife species is easily established, improved or maintained on these soils, They are well suited for the dependable growth of a wide variety of desirable food and cover plants. It is difficult and expensive to develop habitat for wetland wild- life on these soils. { _ Woodland. Productivity for wood crops ranges from fair to good. Both hardwoods and conifers are well suited. Competition from hardwoods is a _ > problem when managing for pine, spruce, or larch. These soils are suit- able for the more valuable hardwoods such as black walnut, yellow poplar, and red oak. : : :.; :� i e production of silage corn, hay. 1 for the g '1 are suitable These soils p Cropland. and late vegetables. With adequate drainage they are suited to the produc-. tion of all crop adapted to the areas, however, tobacco and potatoes are subject to some damage in very wet summers. On the steeper slopes, _ _: measures are necessary to control runoff and erosion. E�: - TERRACE SOILS OVL;R SANDS AND GRAVELS � •` Well drained soils wit', slopes loss rr;an 15 percent A-ld Well drained soils with slopes less than 8 percent A-le Well drained soils with slopes between 8 and 15 percent These soils occur above floodplains in river and stream valleys. ` L,.(,y have fair to good water holding capacity. About 15 inches to 31feet of friable loamy soil material overlie water deposited beds of sand and gravel. Permeability is moderate or rapid. Urban. Permeability and most other soil factors are favorable for installation and operation of onsite sewage disposal systems. T" e C:::-- percolation rate and underlying sand and gravel may allow sewage effluent p Y� g g Y g . to pollute groundwater. On slopes greater than 8 percent, the design _end site selection for absorption fields require special consideration. �- r Soil conditions are favorable for homes with basements. On slopes above � 3 percent, difficulty is added to site preparation. d.owever, the steeper slopes may present opportunities .for a wider choice of architechtural design. Soil conditions are favorable for the establishment of lawns, trees, and ` shrubs. Slopes above 8 percent add difficulty for landscaping. The sandy loam soils are somewhat droughty. Difficulty in constructing and maintaining streets and parking lots is slight on level areas, moderate on slopes between 3 and 8 percent, and severe on slopes above 8 percent, Earth moving is readily done. Recreation. These soils have slight or moderate limitations for pir:nic areas and camp sites. The level soils are. favorable for play areas, Lut limitations for this use increase on soils having slopes above Z po cent. The potential for recreational use of these soils is enhanced by their proximity to streams, ponds, and sites with potential for water development. Wildlife. Habitat for openland and woodland wildlife species is easily established, improved, or maintained on these scils. T',Fy are well suited for the dependable growth of a wide variety of desirable food and cover plants. It is impractical to develop habicat for wetland wildlife on these soils. Woodland. Productivity for wood crops ranges from fair on the sandy loam soils to good on the silt loam soils. Both hardwoods and conifers are well suited. Competition from hardwoods is a problem when managing for pine, spruce, or larch. i; Cropland. These soils are suitable for the productions of all agricul- tural, crops adapted to the area. Supplemental irrigation is needed to C assure necessary production levels for crops with a high cash return. �. Erosion is a hazard on these soils. Intensive surface water control measures are needed on slopes above d percent. r. t:. i r ^ i EE_ ..... ..... .......... ....... .......... TERRACE SOILS - OVER SANDS AND GRAVELS FFFFF Excessively drained soils with slopes less ti.an 15 percent y.: A-la Excessively drained soils with smooth slopes less than 8 percent it - A-lb Excessively drained soils with irregular slopes between 3 and 15 percent These soils occur above floodplains in river and stream valleys. Water deposited beds of sand and gravel are less than 20 inches below the soil surface. Permeability is rapid. The shallowness to sand or gravel severely limits their water holding capacity. Natural fertility is low. Urban. The permeability of these soils is favorable for the installation and operation of onsite sewage disposal systems. On slopes above 8 per- cent, the design and site selection for absorption fields require special consideration. The high percolation rate may allow sewage effluent to pollute groundwater. Soil conditions are favorable for comes with basements. Conditions are !avorable for stability of footings and performance of footing drains. r 7ihe steeper slopes may add difficulty to site preparation. However, the ............ steeper and irregular slopes present opportunities for a wider choice of architectural design. Land grading for landscaping will expose sand or gravel.. Lawns, trees, and shrubs are difficult to establish and maintain because of low moisture holding capacity and low natural fertility. The steeper slopes add further difficulty to these problems. When constructing streets and parking lots. earth moving is readily ::::: : ;.......... done, but stabilizing and vegetating banks is difficult particularly on {�..:.::: : the steeper slopes. k===::: r-.......... Recreation. In many- places- the potential for recreational uses of these soils is enhanced by- their proximity to streams, ponds, and sites with potential for water developments. They are favorable for picnic areas and camping sites. -. Even the level soils present difficulty in establishing and maintaining vegetation for play areas, and the sails with steeper r and irregular slopes have severe limitations for play areas. e Wildlife. These soils are poorly suited for the production of habitat required by openland and woodland wildlife. A dependable growth of desirable food cover plants is limited by the low natural fertility an d low moisture holding capacity. Food and cover can be established, improved, or maintained, but it is difficult and Expensive, especially for openland wildlife.. Results are not always satisfactory. It is impractical to create wetland wildlife habitat on these soils. Woodland. Productivity for wood crops is poor on these soils because natural fertility and moisture holding capacity are low. High mortality of natural or planted seedlings can be expected. White pine should produce a greater yield than hardwoods. Cropland. Droughtiness and low natural fertility severely restrict the use of these.soils for crop production. Irrigation with intensive fertilization is essential for satisfactory yields of crops including tabacco, corn,: vegetables, and hay. If cultivated crops are grown on the steeper slopes, measures for controlling erosion and runoff are necessary. Wind erosion is a hazard particularly on loamy sands. f K: r