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Home My WebLink About20140148 Ver 1_Report_20150401Homewood, Sue From: Beasley, Troy <TBeasley @withersravenel com> Sent: Wednesday, April 01, 2015 10 29 AM To: Homewood, Sue, corey bassinger @ncdenr gov Subject: FW Basil Holt - Burlington Force main Attachments: Max Gel MSDS 2010 pdf Sue /Corey, This email is in reference to the Basil Holt - Burlington Force Main (DWR #14- 0148), located in Alamance County and is in follow -up to our phone conversations this morning The project consists of the construction of ±15,850 If of sewer force mail, which will connect the existing Basil Holt pump station at Apple Blossom Lane (which is being renovated to be the main discharge pump station for the Town) to the East Burlington Waste Water Treatment Plant The connection of the force mail to the WWTP required a directional drill beneath the Haw River The directional drill beneath the Haw River has commenced and is approximately 50% complete Since the bore under the river is through dense, very hard rock and because of the size of the bore required, the bore is being completed in three phases, with the first being the pilot bore (6" diameter), followed by 2 incremental reaming expansions of the bore (the first to 12" diameter and the second to 18" diameter) to achieve the required diameter. The pilot bore was accomplished with no incidents Yesterday afternoon during the first reaming expansion, the contractor and the W &R onsite observer identified a small plume in the Haw River and immediately shut down the drilling Upon further inspection, it was determined that the reaming expansion of the hole has apparently crossed a fracture in the rock, which is allowing the bentonite- drilling mud to seep out into the Haw River Drilling was stopped yesterday to assess the situation, so we do not have an accurate assessment of the true size of the leak or the size /length of the plume before dilution occurs I have attached the Material Safety and Data Sheet (MSDS) that for the bentonite drilling mud being used. There is no engineering control that can be used to seal the fracture to eliminate the leak Due to the distance already drilled under the Haw River, relocation of the bore hole for the force main is not a feasible option, and encountering another fracture with a new bore is very likely Therefore, drilling is ongoing, as the only way to stop the leak will be to finish the drilling and remove the bentonite drilling mud from the bore hole by installing the force main It is estimates' that there is approximately 7 more days of drilling required to complete the bore beneath the Haw River. During this time, there will be a constant leak of bentonite drilling mud into the Haw River. There was also an additional small release of bentonite drilling mud discovered within the intermittent stream immediately east of the WWTP on the south side of the Haw River which affected approximately 150 If of the channel. Over the weekend, rainfall runoff caused the temporary bore pit on the south side of the river to overflow, causing the bentonite drilling mud to sheet flow through the grass and enter the intermittent stream and ultimately the Haw River The congealed bentonite was approximate 1 -2 inches thick on the stream banks The contractor constructed temporary check dams in the upper reach of the stream to contain the additional muddy runoff The contractor also used a vacuum truck to suck the congealed bentonite off of the stream banks Due to the loss of suction at a certain distance from the vacuum truck, the vacuum removal of the congealed bentonite was only successful for about 50' The contractor is planning to clean the remaining ±100' of stream bank by hand this morning We are notifying you in an effort to address this issue as quickly as possible Please contact me with any questions Troy Beasley WITHERS &RAVE:MEL REVISION DATE 12 -07 -10 SDS NO 11282 S .. SAFETY DATA SHEET MAX GEL T 1 IDENTIFICATIOtI OF THE SUB3TANC%/ llAR TTiONffAND'OF 7'FiE,COIVIPA 614DERTAI4NG t: , ti ...w" PRODUCT NAME MAX GEL APPLICATION Oil well drilling fluid additive SUPPLIER M -1 SWACO Endeavour Drive Arnhall Business Park Westhill Aberdeen AB32 6UF Scotland UK T = +44 (0)1224- 742200 F = +44 (0)1224- 742288 E -mail = MBXMSDS- EH @miswaco com EMERGENCY TELEPHONE (24 Hour) Europe +44 (0) 1235 239 670, Asia Pacific +65 3158 1074, China +86 10 5100 3039, Middle East and Africa +44 (0) 1235 239 671, Australia +61 2801 44558 � 2 MAZAARbS- IDENTIFICi4TION W", `' " £ ; "° � , ` .$ � 9 � Not regarded as a health or environmental hazard under current legislation HUMAN HEALTH This product contains a small quantity of quartz, crystalline silica IARC Monographs, Vol 68, 1997, concludes that there is sufficient evidence that inhaled crystalline silica in the form of quartz or crystobalite from occupational sources causes cancer in humans IARC classification Group 1 Because of quantity and composition, the health hazard is small 63 COMIPOSITION/IN50RMATION OIV INGREDIENTS "" � _v. ? w Y "��Y �,,��,'�:"�.Q� �-•,, a &'"t44��' � v °'a tx �:L,'c�''# . c Conterit � Cla "sifcation (67/,548)ECN� BENTONITE 215 -108 -5 1302 -78 -9 60 -100% QUARTZ, CRYSTALLINE SILICA 238 -878 -4 14808 -60 -7 2 -15% Xn,R48 /20 GYPSUM 13397 -24 -5 0-1% TRIDYMITE 239 -487 -1 15468 -32 -3 0 -1% Xn,R48 /20 The Full Text for all R- Phrases are Displayed in Section 16 COMPOSITION COMMENTS The data shown is in accordance with the latest EC Directives This product contains a small quantity of quartz, crystalline silica Prolonged and repeated exposure to concentrations of crystalline silica exceeding the workplace exposure limit (WEL) may lead to chronic lung disease such as silicosis Because of quantity and composition, the health hazard is small INHALATION Move the exposed person to fresh air at once If respiratory problems, artificial respiration /oxygen Get medical attention if any discomfort continues INGESTION Immediately give a couple of glasses of water or milk, provided the victim is fully conscious Get medical attention if any discomfort continues SKIN CONTACT Remove contaminated clothing immediately and wash skin with soap and water Get medical attention promptly if symptoms occur after washing EYE CONTACT Make sure to remove any contact lenses from the eyes before rinsing Promptly wash eyes with plenty of water while lifting the eye lids Continue to rinse for at least 15 minutes Get medical attention if any discomfort continues 1/ 4 REVISION DATE 12 -07 -10 SDS NO 11282 MAX GEL EXTINGUISHING MEDIA Use fire - extinguishing media appropriate for surrounding materials SPECIAL FIRE FIGHTING PROCEDURES Name Containers close to fire should be removed immediately or cooled with water KTWA - 8 hrs UNUSUAL FIRE & EXPLOSION HAZARDS Notes " High concentrations of dust may form explosive mixture with air PROTECTIVE MEASURES IN FIRE Self contained breathing apparatus and full protective clothing must be worn in case of fire GYPSUM Vk4 ACCIDENTAL RELEEASE {MEFiS0RES 4 mg /m3 PERSONAL PRECAUTIONS Wear protective clothing as described in Section 8 of this safety data sheet WEL ENVIRONMENTAL PRECAUTIONS 0,1 mg /m3 Do not allow to enter drains, sewers or watercourses SPILL CLEAN UP METHODS TRIDYMITE Avoid generation and spreading of dust Shovel into dry containers Cover and move the containers Flush the area with water In case of spills, beware of slippery floors and surfaces 0,1 mg /m3 T HANDLING AND SORAGEy, USAGE PRECAUTIONS Avoid inhalation of dust and contact with skin and eyes Avoid handling which leads to dust formation STORAGE PRECAUTIONS Store in tightly closed original container in a dry, cool and well - ventilated place . 8 EXPOSURE `CONTROLS /PERSONA OROTECTION WEL = Workplace Exposure Limit PROTECTIVE EQUIPMENT ENGINEERING MEASURES Provide adequate general and local exhaust ventilation RESPIRATORY EQUIPMENT No specific recommendation made, but respiratory protection must be used if the general level exceeds the recommended occupational exposure limit Dust filter P2 (for fine dust) HAND PROTECTION For prolonged or repeated skin contact use suitable protective gloves Nitrile or Neoprene gloves are recommended EYE PROTECTION Wear approved chemical safety goggles where eye exposure is reasonably probable OTHER PROTECTION Wear appropriate clothing to prevent any possibility of skin contact Provide eyewash station ,9 PHYSICALANk LMICALIPROPERTIES�'R, s� APPEARANCE Powder. dust COLOUR Tan to Grey ODOUR Odourless SOLUBILITY Insoluble in water RELATIVE DENSITY 2 3- 2 6 s g 2/ 4 Name Std KTWA - 8 hrs ntiSTEL 15 min Notes " GYPSUM WEL 4 mg /m3 QUARTZ, CRYSTALLINE SILICA WEL 0,1 mg /m3 TRIDYMITE WEL 0,1 mg /m3 WEL = Workplace Exposure Limit PROTECTIVE EQUIPMENT ENGINEERING MEASURES Provide adequate general and local exhaust ventilation RESPIRATORY EQUIPMENT No specific recommendation made, but respiratory protection must be used if the general level exceeds the recommended occupational exposure limit Dust filter P2 (for fine dust) HAND PROTECTION For prolonged or repeated skin contact use suitable protective gloves Nitrile or Neoprene gloves are recommended EYE PROTECTION Wear approved chemical safety goggles where eye exposure is reasonably probable OTHER PROTECTION Wear appropriate clothing to prevent any possibility of skin contact Provide eyewash station ,9 PHYSICALANk LMICALIPROPERTIES�'R, s� APPEARANCE Powder. dust COLOUR Tan to Grey ODOUR Odourless SOLUBILITY Insoluble in water RELATIVE DENSITY 2 3- 2 6 s g 2/ 4 REVISION DATE 12 -07 -10 SIDS NO 11282 MAX GEL ,. `410= tTABIL``ITY,AND�REACTiVITY STABILITY Stable under normal temperature conditions and recommended use 11 fOXICO�pO_GICINFORNIATIOW ; ,r" y � a V a vry r s� INHALATION Dust in high concentrations may irritate the respiratory system INGESTION May cause discomfort if swallowed SKIN CONTACT Prolonged and frequent contact may cause redness and irritation EYE CONTACT Particles in the eyes may cause irritation and smarting ECOTOXICITY Contact M -1 SWACO's QHSE Department for ecological information at env @miswaco com 133 DISPOSALvCON31DERATIONS r tO DISPOSAL METHODS Recover and reclaim or recycle, if practical Dispose of waste and residues in accordance with local authority requirements GENERAL The product is not covered by international regulation on the transport of dangerous goods (IMDG, IATA, ADR/RI D) 15 ,REGULATOfiYRINFORNIATION�s,�v* €ix 4 }fit'" WWI- ��`��.ax;. a`?^s '$ �;,`- .t��.n.+ ;.a`k:.. °a�.'?vt'`t •µ'`" V`��f•°. -��"` RISK PHRASES SAFETY PHRASES NC Not classified NC Not classified UK REGULATORY REFERENCES Chemicals (Hazard Information & Packaging) Regulations Control of Substances Hazardous to Health Regulations 2002 (as amended) Workplace Exposure Limits EH40 EU DIRECTIVES Regulation (EC) No 1907/2006 of the European Parliament and of the Council of 18 December 2006 concerning the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), establishing a European Chemicals Agency, amending Directive 1999/45/EC and repealing Council Regulation (EEC) No 793/93 and Commission Regulation (EC) No 1488/94 as well as Council Directive 76 /769 1EEC and Commission Directives 91/155/EEC, 93/67/EEC, 93/105/EC and 2000/21/EC, including amendments INTERNATIONAL CHEMICAL INVENTORIES Contact REACH @miswaco corn for REACH information Complies with the following national /regional chemical inventory requirements AICS, DSL / NDSL, IECSC, EINECS / ELINCS, METI ENCS, TCCL ECL, NZIoC, PICCS, TSCA GENERAL INFORMATION HMIS Health -1 HMIS Flammability - 0 HMIS Physical Hazard - 0 E - Safety glasses, Gloves, Dust Respirator INFORMATION SOURCES Product information provided by the commercial vendor(s) Material Safety Data Sheet, Misc manufacturers Micromedex European Chemicals Bureau - ESIS (European Chemical Substances Information) REVISION COMMENTS General revision Compiled or revised by Sandra McWilliam ISSUED BY Bill Cameron REVISION DATE 12 -07 -10 REV NO /REPL SIDS GENERATED 1 SDS NO 11282 3/ 4 REVISION DATE 12 -07 -10 SIDS NO 11282 MAX GEL RISK PHRASES IN FULL R48/20 Harmful danger of serious damage to health by prolonged exposure through inhalation DISCLAIMER MSDS furnished independent of product sale While every effort has been made to accurately describe this product, some of the data are obtained from sources beyond our direct supervision We cannot make any assertions as to its reliability or completeness, therefore, user may rely only at user's risk We have made no effort to censor or conceal deleterious aspects of this product Since we cannot anticipate or control the conditions under which this information and product may be used, we make no guarantee that the precautions we have suggested will be adequate for all individuals and /or situations It is the obligation of each user of this product to comply with the requirements of all applicable laws regarding use and disposal of this product Additional information will be furnished upon request to assist the user, however, no warranty, either expressed or implied, nor liability of any nature with respect to this product or to the data herein is made or incurred hereunder 4/ 4