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HomeMy WebLinkAboutReg Act in Wetlands (34) .JAN 1 U 1984 TOWN OF SOUTH WINDSOR 0� INLAND WETLANDS AND WATER COURSeAO94& APPLICATION O INLAND WETLANDS AGENCY ACTION THIS APPLICATION SHALL BE RECEIVED BY THE INLAND WETLANDS AGENCY AT THE REGULAR- LY SCHEDULED MEETING ON THE SECOND MON- APPLICATION NO. �� (' DAY OF THE MONTH AT THE TOWN HALL. RECEIVED DAT a/��$� THIS APPLICATION MUST BE FILED IN TRIPLICATE AT THE OFFICE OF THE TOWN CLERK TOWN OF (if necessary) PUBLIC HEARING DATE SOUTH WINDSOR, AT LEAST TEN DAYS PRIOR TO COMPLETED APPLICATION THE REGULAR MEETING DATE. PERMIT GRANTED DATE . &_j A SET OF PLANS MUST BE SUBMITTED TO THE TOWN ENGINEER AT LEAST TEN DAYS PRIOR TO PERMIT DENIED DATE THE REGULAR MEETING DATE. PLEASE PRINT. 1 1. APPLICANT Allied Plywood Corp. TEL. NO. 522-0214 ADDRESS 2882 Main Street CITY & STATE- Hartford: Ct 06101 2. OWNER Savin Bros. Inc. TEL. NO._549-3200 ADDRESS 301Hartford Ave. CITY & STATE Newington, rt. 3. LOCATION OF PROPERTY Lot #.� Conn Ave South Windsor, Ct NAMES OF ADJACENT PROPERTY OWNERS Edward K. & Rosalie M. Ba tul a Howard Feivou. ET.AL Rdward E_ Stain, RT Ai STATE CLEARLY AND BRIEFLY 5. PURPOSES AND DESCRIPTION OF THE PROPOSED ACTIVITY,AND THE TIME ELEMENT INVOLVED: Q Construct a portion of tha Antranep Ariyp and ng lot on the Nnrth Wper corner of the R000erty in the Wetlands ATTENTION: THE APPLICANT UNDERSTANDS THAT THIS APPLICATION IS TO BE CONSIDERED COMPLETE ONLY WHEN ALL INFORMATION & DOCUMENTS REQUIRED BY THE AGENCY HAVE BEEN SUBMITTED. APPROVAL MAY ALSO BE NECESSARY FROM THE PLANNING AND ZONING COM- MISSION. Alin AT.aiL�I+iFrA6►E#GlLIt�4T-6-44 S -MEET"*&. AN APPLICATION FEE IS REQUIRED. CONSULT THE REGULATIONS. A SIGN IS REQUIRED. CONSUL T IONS. SIGNED: (Ap can ) (Owner) - Revised 9/20/82 RALMBERG & RUSSO -:. 4j('oB 522 Cottage Grove'> oad MARS 1 UT NO. 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CL ............ 3 ta- ....... ...:.....1�JG�.J:Op .... �._. _.. _... _ ...... ,.... _ ._Fl.c�c�....e.........._ ....._._ ............... ........ 95_d ........ . ....:.... .. .. _ ................. .....__..... __........_.._...... ._ .y .__... ..... 7T . .. _..... ......... .... : : : : : c _. _..:...... .._ _ ..._ T76 �........_:.__.__._...._.._:...._.....:........._._.__..... ...... c "NL ............ _ rNC41CI2041 �.won We 01471. - s Environmental Management Counselors,Inc. 165 Oak Ridge / Berlin, QT 06037 203-828-0787 GROUNDWATER CONDITIONS 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 Enirironmental Evaluations Water Resources Land Use Impact Statements Pre-pla nn ing 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 i 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 Purcell 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 CDevelopment. " Geology 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 i 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. l Groundwater Conditions Inspection of soil and topographic maps reveals that ground- water would have been very near the surface, predevelopment, 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 slight lowering 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 r J 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. r 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 1 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 parkcentr study Ground Ground water Elevt ©� '- Hole No. elevation elevation of day ,_ `Da 'b._:.drilled W-3 74 70 61. S.. W-4 72. 5 68. 5 58. 5 / 67 W-5 72. 5 69 58 . 5 /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. 61 6/23/76 PV-101 74 70.5 ?** 6/24/76 PV-102 (2) 72 66 59 6/24/76 4 Holes with numbers starting with W were drilled ly 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 (1) 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 preceded by two 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. s. i Name : Charles William Dimmick 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, 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