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Home My WebLink About2014 Gas Well #6 Relocation D&B ENGINEERS 7AND ARCHITECTS, P.C. KNOWN AS DVIRKAAND BARTILUCCI CONSULTING ENGINEERS 330 Crossways Park Drive,Woodbury,New York 11797-2015 516-364-9890•718-460-3634•Fax:516-364-9045•www.dvirl<aandbartilucci.com Board of Directors Henry J.Chlupsa,P.E.,BCEE President&Chairman Steven A.Fangmann,P.E.,BCEE Executive Vice President December 17, 2014 Robert L.Raab,P.E.,BCEE,CCM Vice President Vice Presidents Richard M.Walka Syed H. Rahman ' Senior Vice President Joseph H.Marturano Regional Solid Materials Engineer Senior Vice President NYSDEC-Region 1 ® Q Dennis F Koehler,P.E. Senior Vice President SUNY at Stony Brook Garrett M.Byrnes,P.E. 50 Circle Road DEC y Vice President 2 2014 D Rob J.DeGiorgio,RE.,CPESC Stony Brook,NY 11790 Vice President Stephen M.Dudar,P.E. TOWN OF SOUTHOLD Vice President Re: Town of Southold Landfill OLPT.OF SOLID WASTE Thomas R Fox,P.G. Vice President Relocation of Gas Monitoring Well GMW-6 William D.Merklin,P.E. D&B No. 3175 Vice President Michael Neuberger,P.E. Vice President Kenneth J.Pritchard,P.E. Dear Mr. Rahman: Vice President Theodore Vice Presidetytlar,Jr. On behalf of the Town of Southold (the Town), D&B Engineers and Architects, John Schreck,RE. Vice President P.C. (D&B) is providing you with the following letter detailing the relocation of en Brian M.Veith,P.E. gas monitoring well GMW-6 at the capped Town of Southold Landfill located Vice President Charles J.Wachsmuth,P.E. on Middle Road (CR 48) in Cutchogue, New York. The work was completed on Vice President October 8, 2014 in accordance with the New York State Department of Dir.of Architecture Environmental Conservation (NYSDEC)-approved scope of work letter, dated Michael Rodriguez,AIA,LEED-AP September 10, 2014. Senior Associates Steven M.Cabrera Christopher M.Clement Gas monitoring well GMW-6 was relocated to the far side of the gas migration Ellen R.DeOrsay control trench, opposite to the waste mass. The objective of the well relocation Matthew R DeVinney,P.E. Frank DeVita was to allow the well to serve its designated function (i.e. to determine if the gas Joseph A.Fioraliso,P.E. migration controls for the capped landfill are working, and monitor for potential Michael R.Hofgren migration of gas), and will allow the Town to remain in compliance with Christophera Richard W.Lenenz,,RE. NYSDEC Part 360 regulations. The existingGMW-6 was abandoned in P.E. Olga Mubarak-Jaramillo accordance with the requirements of 6NYCRR3 60-2.11(a)(8)(vi). Philip R.Sachs,P.E. Daniel Shabat,P.E. Background Associates Rudolph F.Cannavale Christopher W.Francis D&B currently conducts quarterly landfill gas monitoring for the Town at 15 gas Christopher Koegel,P.E.,CCM monitoring wells (GMW-1 to 15) located along the perimeter of the landfill. Michele Mastrangelo Roger W.Owens Results are,reported to the NYSDEC. Figure 1, provided in'Attachment 1 to this Robbin A.Petrella letter, depicts the approximate location of the gas monitoring wells. Gas Edward J.Reilly monitoring well GMW-6, located along the eastern perimeter of the landfill, has Michael G.Savarese,P.E. Stephen E Tauss °50 Years of Facing Challenges,Finding Solutions... Since 1965" D&B ENGINEERS AND ARCHITECTS, P.C. Syed H. Rahman, Regional Solid Materials Engineer Page 2 NYSDEC-Region 1 December 17, 2014 exhibited a trend of elevated methane levels. Methane has been consistently detected in GMW-6 at greater than 100% of the lower explosive limit (LEL) during quarterly gas monitoring. As discussed in the scope of work letter, it is likely that the elevated methane levels previously detected in GMW-6 were due to the well being located between the waste mass and the gas migration control trench and venting system. In accordance with the plans and specifications for the landfill cap, gas monitoring wells are required to be located on the opposite side of the gas migration control trench from the waste mass in order to monitor for the potential migration of gas beyond the venting system. Therefore, the Town had requested that D&B install a new well (GMW-6R), and properly abandon the current well location(GMW-6). Summary of Work The installation of a -new, relocated gas monitoring well GMW-6R was completed on October 8, 2014 using a hollow-stem auger (HSA) drill rig. In accordance with the approved scope of work, the well was installed in the grassy area to the south of the asphalt access road, approximately 40 feet south of the gas migration control trench. The locations of gas monitoring well GMW-6 and newly installed well GMW-6R are depicted on Figure 2 in Attachment 1, as well as the approximate locations of the landfill cap and gas migration control trench. Gas monitoring well GMW-6R was constructed to the same specifications as the original GMW-6. A well construction log for GMW-6R is provided as Attachment 2. The 4-inch diameter well is screened from 3 to 43 feet below grade, with schedule 40 PVC well riser and 0.120-inch slotted screen, ending approximately 5 feet above the water table. The annular space around the well screen was filled with No. 4 well gravel up to 1 foot above the screen. A bentonite seal was then tremied in the annular space to just below grade, and a protective well casing cast in place in a concrete pad. A valve fitting was installed at the top of the well cap for gas monitoring purposes. After the newly installed well GMW-6R was completed, GMW-6 was abandoned in accordance with NYSDEC procedures detailed in 6NYCRR360-2.1l(a)(8)(vi). This included sealing by pressure injection with cement bentonite grout extending the entire length of the boring to five feet below the ground surface. The upper five feet was then backfilled with appropriate native materials compacted in 6-inch lifts to avoid settlement. Based on discussion with the NYSDEC site monitor, visibly clean drill cuttings from the installation of GMW-6R were utilized for backfill. The well decommissioning record is provided as Attachment 3. A photographic log of the GMW-6 well relocation process is provided as Attachment 4. D&B ENGINEERS AND ARCHITECTS, P.C. Syed H. Rahman, Regional Solid Materials Engineer Page 3 NYSDEC-Region 1 December 17, 2014 One day after the installation of GMW-6R, the well was measured for landfill gasses. Methane was not detected at GMW-6R. Carbon monoxide and hydrogen sulfide were not detected and oxygen levels were detected below typical atmospheric levels. The next quarterly round of monitoring is expected to be conducted during the Fourth Quarter of 2014, which will include GMW-6R. If you have any questions and/or comments, please do not hesitate to contact Mr. James Bunchuck at the Town of Southold (631-734-7685) or me at (516) 364-9890, Ext. 3091. Very truly yours, Anthony Caniano Project Manager AMC(t)/nc,kap Attachments cc: G. WheatonYSDEC) a hunch a ek (MTlio_.I , T. Fox (D&B) +3175\AC 110314_SHR(R02) ATTACHMENT 1 WELL LOCATION MAPS z �mw-ll BMW-08 Gld Z:�.,�� gm- VA V'q l.,a�'/ J � '}u3•x..}!# � �', f �p t il�� Y`Via �� it i NNE F„ k'3•_.w�"' •��•Y�~�i� � jjj< / 1 .,h" £igj q Y t,�..•'�-dad^-.... ✓� Vic:�' � �`'ti .,,e�?.-..._..,....."'-..^a--...........�.,�,_,......,.".....- �„✓ ^'^m'� �„.•' �sW'� ✓'' € � 1�.3�, i Y, j F""� u ^�9. n^" C ��"^`.+•� J�}rS'� `y'1, aw^(� �a�5 m t —WIZ Z] \L q 250 125 0 250 LEGEND GAS MONITORING WELLS SCALE IN FEET GAW-1 *NOTE:WELL SYMBOLS NOT TO SCALE SOUTHOLD LANDFILL `D&B ENGINEERS CUTCHOGUE,NEW YORK f'.A,...< ARCHITECTS,P.C.AND �.. LANDFILL GAS MONITORING WELL KNOWN AS DVIRKA AND BARTILUCCI CONSULTING ENGMEERS LOCATION MAP FIGURE No. 1 may... a. i •r Legend Approximate Extent of Landfill Cap/Waste Mass .� Approximate Extent of Gas Migration Control Trench Newly Installed Gas ,.. GMW-6R Monitoring Well aa' ® Newly Decommissioned Gas M GMW-6 Monitoring Well ® E=xisting Gas Vent Source: Google Earth Professional 2012 ' t Approximate Scale: 1"=30' D&B ENGINEERS Town of Southold Landfill Figure 2 AND Cutchogue, New York L ARCHITECTS, P.C. Gas Monitoring Well .,�,.,��„nNUl,nflrnuccCON�UIrNCFNGuEe0.l Location Map 3175-Proposed Well Installation Map 0(zoonn)_New10_70_14.indd (10/10/14) ATTACHMENT 2 GMW-6R WELL CONSTRUCTION LOG FD&B ENGINEERS ND L_. ..[#)ARC1-IITECI'S, P.C. Well Construction Log Site Southold Landfill Job Number 3175 Well No. GMW-6R Total Depth 43' Surface Elevation Top,Riser Elevation Water Levels(Depth,Date,Time) Date Installed 10/8/14 Riser Dia. 4" Material PVC Length 7.5' Screen Dia. 4" Material PVC Length 40' Slot Size 0.120 SCHEMATIC Surface Seal Type Concrete Ground Surface Well Standpipe Riser Elevation . Bottom Surface Seal Grout Type Cement/bentonite _ 6" Top Seal Seal Type Bentonite 2' Top Sand Pack 3Top Screen Sand Pack Type Gravel Size #4 43' Bottom Screen 43' Total Depth of Boring \\dbfsl\Jobs\_HazWasteG175(Southold Landfill)\Relocation of GMW-6\Repon\GbIW-6R Well Construction Log.doc ATTACHMENT 3 GMW-6 WELL DECOMMISSIONING RECORD WELL DECOMMISSIONING RECORD Site Name: Southold Landfill Well I.D: GMW.-6 Site Location: 6155 Cox Ln.Cutchogue,NY 11935 Driller: AARCO Drilling Company: AARCO Environmental Services Corp. Coordinator: P.Barusich Date: 10/8/14 DECOMMISSIONING DATA WELL SCHEMATIC GROUNDWATER DATA Depth(ft) Depth to NAP.L Not Detected 0 Depth to groundwater(feet) Not Detected Depth to bottom(feet) 43 5 Native Sand CASING PULLING 10 and Soil Method employed.. .. .. .. .. .. ... . .. .. .. -- Casing retrieved(feet).. .... .. .. . .. ... .. . -- 15 Casing dia(in)/type. .. .. .. .. . . . ...... .. . -- 20 Cement/ CASING PERFORATING Bentonite Equipment used..... .. .. .. . .. . .. .. . . .. . -- 25 Grout 4"PVC Number of perforations/foot.. .. . . . . . . .. .. -- Screen Size of perforations.. ....... . .. .. .. .. ... J -- 30 Interval perforated. .. . . . .. ... . . . .. .. .. .. -- 35 GROUTING Interval grouted(ft below ground surface). ... 5'-43' 40 #of batches prepared........ ..... .... . ... 1 For each batch record: 43 Quantity of water used(gal.). . .. .... .. . ... 30 Quantity of cement used(lbs.). . . .. . . .. .. ... 188 Cement type.. .. .. .. .. .. .. .. . . . Portland Quantity of bentonite used lbs. 100 ' Quantity of calcium chloride used(lbs.). . . .. -- Volume of grout prepared(gal.). .. . .. .. ... 45. Volume of grout used(gal.).. ... .. .. .. ... 45 - COMMENTS;Grout was pressure injected extending the entire length of the boring to five feet below grade. The 0'-5'interval was backfilled with appropriate native materials and compacted in 6-inch lifts to avoid settlement. ATTACHMENT 4 PHOTOGRAPHIC LOG OF GMW-6 RELOCATION ACTIVITIES SOUTHOLD LANDFILL RELOCATION OF GAS MONITORING WELL GMW-6 PHOTOGRAPHIC DOCUMENTATION i Photo 1: Hollow stem augers drilling GMW-6R. Photo 2: Riser and Fillpro#4 well gravel. r Photo 3: GMW-6R being assembled. Photo 4: PVC tubing and valve at GMW-6R. \\dbfsl\Jobs\_HazWaste\3175(Southold Landfill)\Relocation of GMW-6\Report\GMW-6 Relocation Photolog.doc SOUTHOLD LANDFILL RELOCATION OF GAS MONITORING WELL GMW-6 PHOTOGRAPHIC DOCUMENTATION f Photo 5: Frame of GMW-6R well pad. Photo 6: Close-up of drain hole and concrete pad. _ a 4( Photo 7: GMW-6R standpipe and well pad. Photo 8: GMW-6R completed. \\dbfsl\Jobs\_HazWaste\3175(Southold Landfill)\Relocation of GMW-6\Report\GMW-6 Relocation Photolog.doc • SOUTHOLD LANDFILL RELOCATION OF GAS MONITORING WELL GMW-6 PHOTOGRAPHIC DOCUMENTATION Photo 9: GMW-6 well pad being broken apart. Photo 10: GMW-6 well pad removed. a` i• Photo 11: GMW-6 PVC stickup being removed. Photo 12: GMW-6 borehole after PVC stickup removal. \\dbfslUobs\_HazWaste\3175(Southold Landfill)\Relocation of GMW-6\Report\GMW-6 Relocation Photolog.doc SOUTHOLD LANDFILL RELOCATION OF GAS MONITORING WELL GMW-6 PHOTOGRAPHIC DOCUMENTATION 1 Photo 13: Mixing grout for well GMW-6. Photo 14: Grouting via high pressure pump and tubing. Photo 15: Native materials being compacted at GMW-6. Photo 16: GMW-6 abandonment complete. \\dbfsl\Jobs\_HazWaste\3175(Southold Landfill)\Relocation of GMW-6\Report\GMW-6 Relocation Photolog.doc