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HomeMy WebLinkAbout5803_ROSCANS_1992a 4v Wu,. aJP• State of North Carolina Department of Environment, Health, and Natural Resources Division of Solid Waste Management P.O. Box 27687 • Raleigh, North Carolina 27611-7687 James G. Martin, Governor William L. Meyer William W. Cobey, Jr., Secretary March 2, 1992 Director MEMORANDUM TO: Jim Coffey and Suzanne Molloy FROM: Bobby Lutfy, Hydrogeologist S L, RE: Review Of The Construction Plan Application For The Proposed Madison County Landfill Upon completion of a review of the above referenced Construction Plan Application, several questions have been raised regarding the long-term seasonal high water table elevations, the potentiometric map, proposed excavation depths, and the water quality monitoring plan. There were some errors in the presentation of data on the "Ground Water Elevation Data" Table, "Ground Water Contour Map", and "Revised Projected Long-term Seasonal High Ground Water Elevations" Table (Page 2-9) some of which could affect proposed excavation depths for the facility. One item of critical concern is the projected long-term seasonal high ground water elevation for boring B-6. On page 2-9 the proposed elevation for B-6 is 1935.73. This elevation does not meet the stated criteria of being at least one standard deviation above the highest ground water elevation ever measured at that piezometer. One standard deviation, 1.38, added to the highest reading for B-6 taken on April 8, 1991, elevation 1935.35, would yield a minimum projected elevation of 1936.73. Since boring B-6 is in the area of initial cell development, this one foot difference in elevation could affect proposed excavation in this area. In fact it appears that the Profiles on Drawing 10 are affected should accurate data be substituted for the projected long-term seasonal high water table. The projected high elevation for boring B-18 is 1924.00 feet. The minimum projected elevation for boring B-6 based on the stated criteria would be 1936.73. If a line is drawn connecting these two elevations on the profile for B - B', the proposed excavation depths do not appear to maintain the four foot separation between the bottom of the liner and the projected long-term seasonal high water table. An Equal Opportunity Affirmative Action Employer Page 2 A similar problem occurs if the correct data is entered on profile A - A'. However if one adjusts the projected long-term seasonal high water table to reflect the existing topography, there appears to be a minimum of four foot separation maintained. It is not clear to me exactly how the projected long-term seasonal high water tables were calculated or how the proposed excavation depths wpm teal rill ated - Further exp1�na-t.ion--and ad„7-�tments- n t l;r- e calculations appear to be necessary. The proposed Monitoring Plan does not conform to some aspects of the current water quality monitoring requirements of the Solid Waste Section. Please note the following corrections that need to be made to the Monitoring Plan: All monitoring wells associated with the initial cell must be installed and sampled prior to the disposal of any waste. All shallow detection monitoring wells should be installed using 15 foot well screens set so that the top of the screen is located just above the seasonal high water table. Any variation from this must be approved by the Solid Waste Hydrogeologist. For the deep well the screen depth should be determined at the time of boring after consulting with the Solid Waste Hydrogeologist. All monitoring wells are required to have a concrete collar designed to shed surface water away from the top of the well and designed to firmly anchor the outer well casing. All ground and surface water monitoring points are to be sampled on at least a semi-annual basis. Purge rates are to be calculated on the basis of at least three to five well volumes or to dryness once. An upstream surface water sampling point must be established for the tributary to Walnut Creek that passes through the site. The ground and surface water samples should be analyzed for the parameters listed in the "North Carolina Water Quality Monitoring Guidance Document For Solid Waste Facilities" or the parameters required by the Solid Waste Section at the time of sampling. It is anticipated that the "Subtitle D" phase one monitoring list of parameters will be used beginning in January 1994. All samples must be analyzed using drinking water methodology by a laboratory certified for drinking water analyses in North Carolina, or must be analyzed using EPA SW-846 methodology as approved by the Solid Waste Section in a laboratory approved by the Section. COMMISSIONERS SET LANDFILL DISPOSAL FEE RATES Madi son County I s new sani tary1 andf i ll,\,-off _Sweetwater Road_,__i-s begi_nninsg to take shape. The state as approve e siteanapproved the plans for tne demolition landfill that is under construction at this time... The construction plans for the —sanitary --landfill cell is --being reviewed by the state with approval expected in a couple of months. It has been a long and difficult endeavor, but we feel that the best landfill site was chosen and will provide Madi�,pn County with an environmentally safe Due to the increased costs of meeting the new federal and state regulations pertaining to solid waste management, disposal fees are inevitable. Revenues required to construct and operate the new landfill cell has to be supported by an enterprise fund, i.e. disposal fees. Until a mechanism can be put into place to charge strictly by volume the household fee is determined to be the next fairest form of fee. The county commissioners have tried to make the disposal fees more equitable for 1992 by categorizing households from business and industry. They have also set a lower rate of $24.00 for the elderly that receive the property tar, exemption. House- holds,'Offices, and small business fall in category A and the fee is $43.00. Commercial businesses is catory B at $72.00. Industry, construction companies and large volume producers is catagory C and their fee will be based on the amount disposed. County residents that did not receive a property tax invoice or,for some reason the disposal fee was not included on your tax bill should contact the tax assessor's office. Everyone will be required to display, preferably on the right rear part of the bumper where the attendant can see it easily, your disposal sticker when disposing of your wastes. This sticker identifies you as a Madison County resident supporting your solid waste system. Please do not loan your sticker to others. This is -not fair to you or the other party and if caught could cause your sticker to be revolked-o' Due to the added costs associated with staffing the collection centers as required by state regulations, the county simply cannot afford to open them every day of the week. The hours of operation is based on the size and volume collected at the centers. The county will have a certain time to comply with the new regulation on staffing and will be phasing this in countywide over the next few months. Our new landfill cell and facilities should be completed by early spring and will house a recycling and reuse area. In order to extend the life of -the new landfill cell and meet the 25% volume reduction being landfilled by 1993, a sdparation system must be implemented. This system will have to start at home and at the collection centers. More imformation about the changes will follow. I a .STArf4 S8`o 2 State of North Carolina Department of Environment, Health, and Natural Resources Division of Solid Waste Management P.O. Box 27687 - Raleigh, North Carolina 27611-7687 James G. Martin, Governor William L. Mc�, William W. Cobey, Jr., Secretary September 10, 1992 Direct„ Mr. Jim Brown Madison County Solid Waste Dept. 33 Long Branch Road Marshall, N.C. 28753 RE: Notification Of Semi-annual Sampling Dates For Landfills Dear Mr. Brown, This past January a letter was mailed to all landfill owner/ operators informing them that the Solid Waste Section will be requiring semi-annual ground and surface water monitoring beginning January 1, 1993. All landfill owner/operators were requested to notify the Section prior to July 1, 1992, of the months they will be performing each of their semi-annual sampling episodes for the 1993 calendar year. 'Please note details in the letter of January 10, 1992 that is enclosed with this letter. As of this date the Solid Waste Section has no record of the proposed sampling dates for next year for your facility. Please notify the Solid Waste Section in writing immediately of the two months you have chosen for sampling this coming year. A response should be received_in our office by October 15, 1992. If you have any questions regarding this request or the water quality monitoring program required at sanitary landfills in North Carolina, please contact the Solid Waste Section at (919) 733-0692. Sincerely, r Bobby Lutfy Hydrogeologist Solid Waste Section cc: Julian Foscue Jim Patterson Attachment An Equal Opportunity Aflimnative Action Employer