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92-03_3_Redacted
MEE 6." 6dellfw tL Irl yam'{ ` 'r(L�• .'�j�.� n '�',, ��,� ��'`�' �i.ir�,�' �r r °f' � +�•. �. 1 � .•L _.y� �� �•T i�yl + •r .� Q �, � Ly.Jf• � Cf',,i �. • [`• a # ; { 11 r ' jt _ RLv C7© •• ''' ti i,1� E T�;f� >, � • •-� �, 4 1 �+ 1� a �I"i a• 1 5Y �� _ ,.r • Irv. M �• � ' . � -� 4 i Llo ie Ic- �,�l}{t� "►y t O I �I/JJrCj 1•. Ar j1 � �' 3 i � � [j r`f''+ �7l�jr••.TSt`w (�.�+7 Uly �s �l� + �!' >l'{ _ p € �� � 11 •ti• � ate" �✓ A f/ c . .... . .... . ..... . :1 - �: I �5: �� Suggestions in planning for crushed stone quarry operations, to facilitate the integration of abandoned quarry sites into the urban fabric. A Research Project by: Guy L. Anne or Joseph C. Hill Anthony W. McBride, Jr. Richard A Paton Henry H. Pope, Jr. with the guidance of professors Daniel Young and Wayne Maynard, Department of Landscape Architecture, North Carolina State University, Raleigh, North Carolina. sponsored by: The Nello L. Tear Company- Durham, North Carolina with the cooperation of William F. Wilson, Geologist, the North Carolina Department of Conservationand Development- Mineral Resources Division COPYRIGHT 1970 HELLO L. TEER COMPANY DURHAM, NORTH CAROLINA TABLE OF CONTENTS Introduction ......................................... 1 Obiectives .. . .. .. ............................... 2 Summary ........................................... 3 Context........................................... 4 Form............................................. 8 Master Plan ....................................... 13 Operational Procedures ............................. 13 Conclusions ....................................... 13 Concurrent Land Use Conflicts ....................... 15 Case Study .......................................... 19 Introductiop....................................... 20 Site - Regional Analysis ............................. 22 Reclamation Proposals .............................. 24 Concurrent Land Use Conflicts ....................... 33 Appendix........................................... 35 Quarrying Procedures .............................. �7 .�� Operational Equipment ............................. 39 INTRODUCTION This study deals with open pit quarrying operations engaged in the extraction and crushing of base rock granite used in highway construction and as concrete aggregate. The crush- ed stone product is a vital element in the building industry. The ready supply of this low cost building material is of eco- nomic interest to everyone. For example, a sharp increase in the production costs of crushed stone could lead to an increase in highway costs and hence an increase in highway taxes. Because it is a low Lost, bulky product, its price is closely dependent on the distance it must be transported from quarry site to job site. For this reason crushed stone quarries are found in close proximity to the areas of most intensive building activity —urban areas. As the population increases and urban areas expand, the competition for land use increases. This simply means that the land used for quar- rying operations becomes increasingly valuable as an urban resource. In the past, quarries which have been abandoned have often been left in a state unsuitable for urban use. They often be- come liabilities not oniyto the urban communities in general, in the sense of a wasted resource for development, but also to the quarrying concerns, since this non productive land may become a tax burden. It is obviously to the best advantage of both the community and quarry owners to be able to put these sites to use when quarrying operations are terminated. Another issue arising from the quarrying of crushed stone is the apparent conflict between quarrying and other urban land uses. Previously thisconflict hastaken many forms. These may be dust, noise, or the presence of heavy equipment — intrusions on the environment which have created a certain amount of prejudice against quarrying operations. Although improved quarrying techninnoc hayo roVi—orl nr oliminatprl ,mpro...., quarrying .y...,.. some of these conflicts, the prejudice remains. More re- finements in quarrying techniques and procedures, along with improved public relations, will help alleviate this urban land use conflict. Whenever the "public interest" is involved in an operation, some types of controls or regulations are usually necessary to protect this interest. The awakening awareness of the importance of environmental quality will demand an even greater response to these issues by the quarries. The con- trols that we hope will emerge from this study will be poli- cies self-imposed by the quarrying industry rather than by governmental control. OBJECTIVES There are two basic objectives of this study. The first is to establish some guidelines and procedures which will facili- tate the eventual integration of the quarry site back into the urban fabric. The second is to enumerate some of the techni- ques which may be used to alleviate conflicts between urban land development and quarrying operations. SUMMARY s -- \,ti„=t,'v:I7a�-�,:�....�.�• .�;�.ri.r-05'7''-.-•t�.., '- , r �,..\.-rl �t,%`_�j,�-a ��(y '' '� ,' � � •'`r� � `" �� � r ��Yrt• "c-•Y �""-�'•Y`'✓.1�'--cam'"`` 'e�"'"'r�...h�`��ay` =�'{, �`k`w`z+"`..�. "-:�-."' �' "f a�� -A t�° � a 'Cii, � o �cs tj`�,� .! ��. ' ; ,�-+?,:,v.=.''• - r . , rsi.n�.''� N�,'Z `aa §`� � L, • r � �� °` oo i`� .. j� � ° y �r.�(-_erl :4 � � � `��yJ _ \ib sir' �/. f 'Y�i a.�•'6 y!r�• 4� o ' �. Y wa �/Ji,• wl— awl, cDnn M i1fiY.f lTiti:T PLANNING RECLAMATION Several ideas were postulated as a starting point for this study. Primary among these ideas is the fact that quarries are abandoned. Some quarries are planned to be operational for a certain number of years. Others may be temporary op- erations set up for a single job. But even "permanent" quar- ries are forcers to cease operations from time to time whether by a shift in markets or by unfavorable legislation. Good planning can help insure that these abandoned sites are usable. Ideally, this planning should be done before quarry operations are started. However, with existing operations, it is better late than never. When dealing with the problem of planned quarry use recla- mation, three questions may be posed: (1) To what use should the site be put when quarrying is terminated? (2) What form should the nit be loft to beet accommodate this anticipated use? (3) How can these goals be accomplished while simultane- ously carrying on a successful quarrying operation? If quarries took only one form, the task of selecting a use for the abandoned site would be greatly simplified. The process would be to define the land uses which the quarry form can accommodate and select one compatible to the demands of the community. However, the large earth manipulating equip- ment used in the quarrying process allows much flexibility in the way the different components of the quarry's form can be handled. Thus, quarries may take many "final" forms. Every anticipated land use may require special land form character- istics for optimum development. The problem then becomes to select the most feasible use for the site and create the form which it demands. ANALYSIS CULTURAL CONDITIONS The first step in determining an eventual use for the quarry is to examine the probable physical conditions which will eventually surround the site. Describing the context in which the quarry pit will exist at the termination of operations is a difficult, is not impossible task. The problem of trying to predict what an area will be like at some point in the future is complicated by the fact that with most quarry operations the terminatinn riata is iinknnwn 1-Inwavar, actimntas of the quarry's life expectancy can usually be made by quarry per- sonnel. With these estimates in mind, planning consultants can make educated guesses as to the regional and local context in which the quarry site will exist at termination. In choosing a future use for the site which will be compatible with its surroundings, a study should be made by profes- sional planners which would examine the relationships between projected natural and cultural conditions of the re- gion and site. The following is an example of some of the conditions and relationships which may be included in such a study. NATURAL CONDITIONS Natural conditions are more easily predicted than cultural conditions slnra their natural rates of change are relatively slow. Significant changes in the natural conditions in the near future would likely be the result of changing cultural conditions. The elements described here would include: (1) Topography (2) Macro and micro -climatic conditions (3) Ecology (a) Plant communities (b) Animal communities (4) Geological data (5) Hydrology 5 The cultural conditions are subject to much more change over time and are therefore more difficult to predict. They describe the physical manifestation of man's activities on the land. To project them to some future date would require a study of their patterns and rates of change over some period in the immediate past. The elements included in this study would include: (1) Land Use Patterns (a) Residential (b) Recreational (c) Commercial (d) Institutional (e) Industrial (f) Agricultural (g) Circulation (h) Open Space (2) Utilities Systems (a) Water (b) Sewer (c) Electricity (d) Gas (e) Telephone In addition, political and economic conditions as projected can give valuable direction to future development plans. RELATIONSHIPS One relationship between these conditions is that which de- scribes the manner in which the cultural changes affect the natural environment so as to modify the feasibility (or de- sirability) of proposed land uses. For example, industrial operations could change the quality of the natural water systems or, perhaps, lower the water table. These changes may affect the desirability of recreational and agricultural use respectively. Another relationship between these con- ditions and future development is the demand that projected land use patterns may make. Future high density residential areas may demand open space or commercial facilities. A third relationship may be the compatibility between pro- jected natural or cultural conditions and possible develop- ment. For example, projected industrial development may not be compatible with proposed residential development. lu+d for 'P, 1�►�e�}� oKe pollU }s leave iA eia VA Re reAclyl d 4of rom area _ V. a� esi,denflod Commercia Re5l101�'101 il_1S.1.U.i0"al_ \\\ TDV YBG19MO h 1 11 11 1 SELECTION OF RECLAMATION PROJECT The selection of a specific use for the quarry site when oper- ations are terminated is the next step. Early in this study it was hoped that a decision on the exact use would not be necessary at this point. It was felt that a more compatible rise might ha developed if the rlarisinn wgre nnstnnne'd iintil late in the quarry's life. The idea was to group possible quarry uses according to the similarity of land form required and to select that group which the projected regional -site analysis indicated as having the greatest number of feasible uses for the region. The problem would then be to plan the quarry operations so that the pit was left 'in the proper form. Un- fortunately, it as found that this approach did not give the positive direction needed for quarry planning. This conclusion was reached when it was found that the fnrms raniiirarl by each land use were rather specific, If the final quarry forms were generalized to a point where there were only three or four forms, the relationship of these forms to specific or even generalized uses seemed nebulous. For example, let us say the final form choices decided upon were a, b, and c: (a) Open, sheer wall (b) Covered, bowl (c) Open, treated wall Let us also say that the activity under consideration is a re- gional park. A regional park could conceivably go into any one of these forms. However, if the horizontal dimension in figure (a) was reduced sufficiently the form might not be giiita hla fnlo.r a mark, Thic width -Ain ratin is juct nnc form element that is not dealt with in simplified models (a), (b), and (c). If, on the other hand, all of the significant form elements such as slope of walls, width -depth ratio, and edge treatment are considered, the possible combinations would result in an astronomical number of quarry forms —each sig- nificantly different to be considered a special form. The tuber may approach the inui fiber of possible Uses. There- fore, a better technique may be to choose the use and manipulate the form elements to accommodate it. It is proposed that a definite plan be establlslled as to the eventual use of the quarry. Even "permanent" quarries should plan for eventual integration of the site back into the urban community. The olanninq team, having completed the site analysis, will, in cooperation with the site owners, be able to propose an eventual site use or uses. Once a decision has been made on the proposed future use of the site, a rationale must be developed for planning the final form of the quarry. 8 ESTABLISHING FORM 1 Earlier, it was stated that every land use may require special 1 land form characteristics for optimum development. These cha..In nl:.. .J.. •L.. -Ilia U-! laral.lCrlJlll.J VCterlllllle 111C gUtlllly V3 the gUarlyJ JUJIll. It is possible to examine this quality of form by identifying the form elements relating to quarries and showing their relevance to the anticipated use. These form elements are: (1) Size (2) Width - depth ratio (3) Wall slope 1 (4) Edge (b) Shape (6) Orientation (7) Texture In the following discussion of these elements of form, two �I plans of development will be used to illustrate the relation - shin of the nnticinatpri imp to the mnninlllafinn of tha cle- ments: A regional park and a light industry such as a cloth- ing manufacturer or food processing plant. 11 11 coy, c{ ce, (1) Size - Certain land uses require rather specific dimen- sions. These may be maximums or minimums. It would be difficult to place a stadium in a hole whose maximum hori- zontal ulimensio,n is less than 100 yards. On the other hand, some activities may not relate to the scale of a pit which covers hundred acres. A regional park would require a more extensive space than the compact industrial complex. The size may be limited by property lines or by economic con- siderations, varying depths of overburden, etc. (2) Width -Depth ratio - The sense of space or volume is an important factor related to this ratio- Micro -climatic condi- %tions may also be greatly determined by this variable— i/ especially light, wing, and temperature. The base of a very narrow deep hole may never receive direct'sunlight. It may + I I dk sources r�FAR' t Z. get very little air circulation. Its temperature may be cooler and more constant than the wider, shallower pit. The sense of open space or the sense of being down in the pit may be mi-P0llarlt experlentlal considerations 111 the planning- of a park. The micro -climatic conditions resulting from special wind conditions and the reflection of sunlight off the quarry walls may also be part of this experience. On the other hand, the industry may wish to be in a narrower, deeper pit where vertical circulation and constant temperatures could assure an efficient operation or a minimum amount of land. The horizontal limitations were stated in section one above. The vertical limitations are economic and will be reduced as tech- nological advances reduce the cost of raising the stone out of the quarry: (3) Wall Slope -The slope and treatment of walls may have a determining effect on the type of vertical circulation into and out of the pit in its final form. It also may be closely re- lated to safety factors. The regional park may want gradual slopes at some points for access and vertical slopes at other points for visual impact. The industry may plan to depend entirely on vertical circulation and may prefer only vertical slopes. The desired slope can be achieved by planned extrac- tion or by alteration after extraction is terminated. (4) Edge - Edge treatment is important at two scales. The treatment of the immediate edge may affect safety, especially Around nits with near by vertical slopes. Also, various edge treatments may affect the quality of light, air, and noise mov- Q 10 ing into or out of the hole. Landforms, bolders, vegetation, water, and fabricated structures are a few of the elements which may be used in dealing with the edge at this scale. At a slightly larger scale the edge may be thought of as the un- quarried land which is part of the site. The size and shape of this land can be significant when reclamation development takes place —especially with regard to access to the pit. The park could require specific edge treatments for safety around vertical slopes, as well as for visual interest from within the pit. Access and parking facilities would also be required at the upper level. Edge treatment for the industry might include screening from nearby areas, provisions for [ruck Ur rail access, anfJ parking. Tile parking RAYM ue ilafl- dled vertically in decks within the structure. (5) Shape - The shape of the quarry edge can be a limiting factor on the activities anticipated for the reclaimed site. The perception of the quarry pit as a space can also be af- fected by shape. Psychologists find that people have dif- ferent feelings about circular forms than they do about long, slender forms. Shape is closely related to size and width - depth ratio in its physical and psychological implications. The park may be planned so that people can move through an exciting progression of spaces controlled in part by the shape of the quarry. This may involve rather complex forms. The industry may desire simplified, even geometric shapes to accommodate specific building types. The facto,.. delimit- ing shape are the same as those for size, plus on -site ele- ments like bodies of water, rights of way, etc. (V) Orientation - IEIC eIICl.1J VI orientation reIGIC primarily C. reek dir&4M Sol MWA 11 to micro -climatic conditions, secondarily, perhaps, to access. Orientation occurs in two ways, horizontally and vertically. Horizontal orientation implies the way in which the major axis of the pit relates to the cardinal points of the compass. Vertical orientation may be the way the pit relates to the sur- rounding topography. The park may require an orientation to insure sunlight during certain hours of the day when max- imum usage is anticipated. The planners may also wish for it to take advantage of prevailing breezes. Also, they may wish it to be oriented towards other recreational facilities. The industry may wish to take advantage of the sun's light I some commercial tray, e.g., solar ncauuy. it may Secn to orient its operation so that noise associated with the opera- tion is directed away from certain nearby development. It may wish to orient towards major highways or railroads. aw? AgA flaw IdJeM (7) Texture - The texture of quarry walls and floor refers to the roughness or smoothness of these surfaces. The qual- ity of these surfaces is a factor in determining the final form, and as such, is related to eventual land use. The basic vari- ables of texture are type of material and the degree to which the surface is refined. Stone quarries may be left uncovered, creating a bold, dramatic landscape, or if the slopes are so Planned, they may be covered with overburden and replant- ed. This procedure would create a more naturalistic land- scape. The extraction procedure known as "stepping" or "benching" creates a kind of super -texture which can be useful for certain reclamation projects. The park -may seek a variety of textures —both for interest and function. The in- ('I�,CtN _ . _. ---.. , .......•. n•,........,r , a3yun c vary une Ur two. i ne penChing procedure could be useful in providing structural elements for the industry. - hNr,7 VAr,[IPMau hU 'Cl,il w•,V�1•la'r nav v r rli ri id1�i de�ne fivr a i ural ,2 We have discussed the form elements determining the final, physical quality of the quarry, some of the implications of these elements, and some of the controls or limitations in manipulating the elements. The scope of control allowed by the manipulation, combination, and interrelation of these elements allows flexibility in achieving a desired form. One important aspect omitted here is the type of equipment used in quarrying. Each piece of equipment, whether bulldozer or dragline, has certain spatial requirements for efficient operation as well as limitations on the kind of work it can do. These are discussed in the appendix to this report. IIMf JA-IAn JAnG-iYontu�nAlnT 4,v ,.V9 Krv• kI vn{ Q/ �r Lf. 1 1 1 1 1 MASTER PLAN Having established the anticipated use of the quarry site and the form best accommodating this use, the next step is to establish a master plan to guide quarrying operations towards the desired end. The use of many professionals may be needed to develop a workable plan. These might include civil en- gineers, landscape arthitects, traffic engineers, quarry managers, interested governmental agents, and financial advisors. The plan should include implementation schedules as well as physical designs. OPERATIONAL PROCEDURES Once the master plan is completed, quarrying experts are freeto plan and schedule theirquarrying operations to achieve most effeciently the required forms. Craig Johnson's report No. 2 for the Sand and Gravel Association outlines several useful techniques for simultaneous reclamation and quarry- ing procedures? Although they were proposed for sand and gravel operations, they are easily adapted to the quarry- ing of crushed stone. The major form elements to be manip- ulated are outlined earlier in this report. CONCLUSIONS The procedures for effective reclamation of crushed stone quarries should include these basic steps: (1) Analyze projected regional and site conditions —both natural and cultural. (2) Define pertinent relationships from the analysis. (3) Choose an anticipated use. (4) Determine the desired form. (5) Develop a master plan with implementation schedule. (6) Plan operational procedures to accomplish plan. 1. Johnson, Craig, Practical Operating Procedures for Progressive Reha- bilitation of Sand and Gravel Sites, University of Illinois, Urbana, III., 1966. 13 - ••'S P _ •F _h j,. �' 3� ;� f• •emu J .ytr, � Oi 'ij 1 S ry 1 n . F= - i •'� v.SS},. '% �1�[ r � k° Yam' .',}; S. 1T v - ij'' it . _.EL _ fir ? •1, .� _ -t f' y.•.r 'Wit1, t.•-.. Mom. �} �r �' � i k�.. •r� � !'� s� 7 �' �' r t � � ' r•7. '! Fps"��'e y,^, `' ,R ••f, .. K.�•°a'•,1• ■ CONCURRENT LAND USE CONFLICTS Many complaints are lodged against quarries by people who live or work in the quarry's vicinity. Quarrying companies are well aware of most of the conflicts which result from a business of their nature within the urban setting. Since the quarrying industry is vital to urban growth, an improving relationship with the surrounding community is a constant goal. Some of the major conflicts, and proposals for their alleviation, are: CONFLICT: Visual - The most evident effect of an open pit mining opera- tion is its drastic change of a land form and natural environ- ment. Also of visual concern is the various machinery and processing equipment employed in the mining operation. PROPOSAL: Screening - Screening can serve many functions. It can act as a noise and visual barrier, a frame for interesting portions of quarrying operations, a dust filter, and as a visual enhance- ment for reclaimed areas. Screening can be done with mounds of overburden, rocks, vegetation, or a combination of them. The simplest method of screening with overburden is to stockpile the material along the site perimeter where it can later be used, if needed, for fill material. A more aesthetic solution is to shape these mounds into pleasant forms. Scrapers are well adapted to shape screening mounds. The slopes should be a maximum of 3:1 to allow for mowing. Vegetation, both treesand shrubs, makes an excellent screen- ing material. An ideal situation would exist if natural vege- tation could be left around the outer edges of the site during the initial clearing operation. Trees and shrubs growing on areas to be cleared could be moved to bare areas around the site's edges. Of course, nursery stock could be brought in to supplement existing vegetation. 1s Large boulders could also be used for screening materials. But, because of their stark appearance it would be best to use them in conjunction with one of the other methods of screening. CONFLICT: Dust - Dust is a by-product of all the mining processes — from clearing the site, to transporting the material through the crushers, and onto the stockpiles. Even the machinery moving around the quarry site will cause a certain amount of dust. This problem is increased by the absence of vege- tation which would normally help to filter the air. PROPOSAL: In addition to the screening process described above, dust can also be controlled by using water sprays on truck routes and in the crushing process. CONFLICT: Noise- Noise is constantly produced during quarrying opera- tions. The combined operations of the various machinery cause a continuous drone to be emitted from the area. As in the problem of dust, the lack of vegetation contributes to the situation, for vegetation is a natural sound -proofing material. PROPOSAL: In addition to screening, noise may be lessened by controlled blasting and by orienting operations so that noise may be reflected away from sensitive areas. Land buffers may some- 16 times be secured when quarry property is being purchased orleased. CONFLICT: Silting - In crushed stone operations, large quantities of water are used for cooling and dust control during the crush- ing process. When this water is returned to its source —often a steam —the suspended soil particles settle out and cause siltation. Additional siltation occurs during heavy rains. The large amounts of runoff erode the soil and pick up a large amount of soil particles. This water eventually finds its way to the quarry's water source either through continued run- off or through pumping operations. PROPOSAL: Settling ponds may be constructed so that particles may set- tle out before returning water used in the quarry operation back to its source. The problem of erosion on the site may be attacked by limited clearing and by the planting of cover crops. Limited clearing implies clearing only that portion of the site which will be quarried in a specific length of time. The vegetation remaining on the uncleared land helps reduce erosion, acts as a noise and dust filter, provides temporary screening, and allows for a gradual ecological change. If it is necessary for the entire quarry site to be cleared dur- ing the initial clearing operation, a cover crop will aid in dust control and provide food and nesting habitat for wildlife. Covercrops could also be planted on areaswhere overburden is stockpiled. 64 A �i. V 1S>Pl I .... ........................... �..................� vvwUl All' l �ramfs -mkves{ 09 vim 4 quarry 17 gieje}a6n & hnco rutou4ml CONFLICT: Safety - The major hazards of the quarry in relation to the community are the steep ciiffs, loose rocks, and boulders which occur at the edge. PROPOSAL: Safety precautions should be taken around the periphery of the open pit. A border of large rocks is the simplest, though least aesthetic solution. A more pleasing solution would be to create a border of earth mounds, possibly incorporated with the screening mounds. Safety within the pit can be improved by using the benching technique which provides large terraces which can catch falling debris, and thus provide protection for people and equipment working below. They also provide shelves for planting and for the construction of roads. CONFLICT: Trucks - One of the major sources of irritation to residents in the quarrying area is the constant stream of dump trucks going to and from the quarry site. They tend to create a con- siderable amount of dust and noise pollution. PROPOSAL: This is a difficult problem to control. The only alternative is to provide other access points to the quarry so that the traf- fic will be dispersed and therefore less dense. These ser- vice roads might also be planned to avoid residential areas. 18 bare 0 e&kh Moula 5 - bs�b. yVil foy a is over rMA OVA l / R& INTRODUCTION The snerifir nir iarry fnr %Alhirh thie nrniart %A a8 Commissioned isthe Crabtree Quarrylocated on Highway 70 west of Raleigh, North Carolina. The quarry has been in operation fora number of years and is presently operated by the Nello L. Teer Com- pany of Durham, North Carolina. In studying different quarries it was concluded that there is no such thing as a "typical'' quarry. Crabtree is unique in many respects. For one thing, there s . , y' little water n the Crabtree Quari j. Most qu r'ie5 start to fill with water when excavation extends below the water table. This water must continually be pumped out for quarrying operations to continue. Water has not been a prob- lem at Crabtree. Crabtree Quarry was chosen for the case study for two reasons. First, because there was a fair amount of data on 20 the immediate area v':h;ch resulted from several site analy- sis projects dealing with property adjacent to the quarry. Second, because of its location, the Crabtree Quarry was a convenient site to investigate. The Crabtree Quarry sites located in gently rolling hills bound- ed on the south by Crabtree Creek, a fairly narrow though scenic creek which meanders through Raleigh. Most of the land surrounding the site is undeveloped. An exception is the Oak Park subdivision approaching the quarry site from the east. The quarry site is leased from several individuals and from the state. The leases will expire in approximately thirty years, which will be a major determinant in setting the time for reclamation around the year 2000. • - �GRANYILLE COUNTY i DURHAM , ll RESEARCH TRIANGLE �r �., ums 5 MORRISYILLf GHaTHAM ��R,ASTIREE GGUNTr apEx ' 1 HOLLr SPRINGS L � �L HARNET COUNTY r a 21 of . e� o 0 0 ° 66e VW A 0D11 ° ° QO ttg ° po °o °�°DD oD° o° d ° ° o ° ° moo ° 0� o�4q� tX� on@$ o ova gve 99 SOB JJ/J D D 0 O R g 9 I 0 U D # P -v p000gp�O �� a 0 �„p O p0 p 11U0 O° °p�Q 0QA �po P�q ° 4 Q ° pD o0 a` aao p pppppQO oI °Op a b�� 0 �48 �8 a 0�� a ccaaoo ff a Q�ow r�tti` 00 dB4OpOo4 O068 D / On �ariD0001 a 0 Ode a0 g 00 0 0 0 0 o c +J o n °cbbegapD O Q 0 00 cl Oaao OD ' (j�] 4 0 0 oaP O oO o°l/Jj O D 0 o° e a a �D �� U- a ° O � a� DO o '- q OOO O D p O e, Q 0 V 19 4 g ° eaa� pdd�o0� coo Q00 0 0 • aLO %. a .w1R" O /� O� qb�o `� a� pO 6 nQ p DoAee n � d ego u goP aB�� oOV o0 00 0 boo dppo��o D pp d°�� 0 Q DZ a Q •00� xpn mo �� 'av 0 o c oc4o°`b ° 0 D o D �. -�� Q B D 99 0 D �� "ape ooDa,$9 drip � °^Q� D q o ° $ a q,�$Q p g% o o°po (� z "000 IX AA 0 ° 00a_�0 �� °69°\\0°�4aZ%'\� o� CpOf h 86% o°a 1111 V4aP o ° Q Q,� Oa' 4000 "O�p o� 4 ri % oe n Q co oe C2 N cz;KD pGa �pd�Ge V a o "I9a8So° 9Q� ° a U 00 °061, o 00 00 0 mm4cdo 5 p00 � 00 0 gp0 0 Deg o ®� Qo a o °oo 0 9 O �0®�sB� °qp 6a p �O c c 0 �0 ° dip v�U4 �00��4 oOpgo (Imo e p0 0 °q°0�� so" �4�0 QQ ogo q0� @ ° 6� p rDO°O��Oe D U pde ° �� oaO O� �vo _ �b Nsk% oA 6 �s C n aQv AvGog� oao O o aooQ Ra 8 00 O �a��Ommab dgg066 4q �� �ao da 4o a 'qoa ® p�o0oeoao0p�' - �a$44 �p9 p'9 -5-bopO�p�p 4 u �R D°D Qo epod�°p A°° ° ° 00� O�oDo OSS 0 `' ,C 8 O O 400 m pO000� oO4O4 9�0 Op OV D9 °2O��OO� o e od O n� 4 nO 0o nV /.fs�f99��rcp�o�� ° o �Ooagaao �000�00 � �eogo6acbeoq�oo 0D Q DU 0�'6��°6m�o0 p00 - e POOOo 0 ®�D 00 p�q0p� qp ap0 O b0 eoab p0 ° poi Pq° °" A ° ° 0 O O g0ap0004pOdd_P4 4 ea4cog OOoq �oC=D 9° op0 °QO�DopQ c o oo� O coonO oho Q O �J0 m�°° eg° �, �9 aq�'p o -LIPpp p q daaaapgp 0 0 ap"°oe' ebooODnl ., A n 0 ncp��0_®_ 0 ool� A���a?i°91e� °� 0 �a5iv '��o� �--COMMERCIAL • • fNEMENT OF WATER & SEWER C�1II_��f ill��1.11 Ili 0 11—onlrco Ilure ❑ -G SITE '"w Upfl IJII O � I � U � IIIIUIIII IUI n p 0Pop 0 O Q O ,poo�aB� u �O. ° p9 tl FPP -po9n� ° o �� °e�� °m �. - uu wou. Cl MIRJ= c ' I I CULTURAL CONDITIONS 23 RECLAMATION PROPOSAL RELATIONSHIPS It was first decided that the size of the abandonded site would allow either a solution using shaped land forms, a solution using a complex of buildings, or a solution using a combina- tion of the two. The next step was to extract the most important relation- ships from the regional analysis. These are listed below. Crabtree Valley .ahwF.Muny -I LUF i nc UA10t0nCe ui una large regional shopping center negates the need for another one on the abandoned quarry site. Also the presence of this shopping center will increase the rate of residential growth in this area. Umstead Park: This park offers a vast opportunity for rec- reation. Turning the quarry site into a park would only ex- tend this recreation area slightly. 24 Research Triangle Park: As the Triangle increases in size, more residential areas will be needed. The situation of the quarry site between the Triangle and the city proper increas- es its value as a residential area. Thoroughfare connection with Duraleig h Road: This new road will provide transverse circulation through the area making the site accessable to the Research Triangle, the Belt Line, N.C. 54, U.S. 70, and to the city proper. These relationships imply that the best use of the Crabtree Quarry site after abandonment will be for some form of res- idence. Based on existing proposals for apartment com- plexes in the area, a decision was made that a high density residential complex would be best suited to the site. QUARRY FORM Size: It was assumed that a primary goal of the quarry opera- tion is to extract the presently estimated quantity of stone; and that any master plan should, if possible, adhere to this goal. For this reason — although the shape was modified to some extent — the volume to be excavated was altered only slightly from quarry estimates. Width -depth ratio: The stepped method of extraction suits the development of an apartment complex more than would sloped or vertical edges. The desired step height is approx- imately 20 feet, while the width from the tiers vary from 50 to 75 feet. Wall -Slope: Walls that are to be built directly against should be vertical. For safety, open walls should be tapered out- ward to the bottom. Edge: On the walls that drop vertically more than one step, some safety precautions should be taken. Both aesthetically and physically the most suitable edge treatment would be building a low . all 2 1 /7 9 1 /7 feet high on the upper level U l ulllya IVW Wan L 1/L-U I/L IGGI Iliyll VII UIc uppcl Icvc. and having a ledge below approximately 5-6 feet wide planted in some material that would discourage movement through it. Shape: Practically speaking, the final shape. of the quarry should be kept fairly simple —this is merely a matter of ease of operation during quarrying. The shape decided upon divides the pit into two slightly different orientations to dis- tract from the size of the space and create a sense of smaller spaces. It would even be possible to change the "atmos- phere" of the space by variation of materials, Types of archi- tecture, etc.. 25 ORIENTATION: Because of the cool damp feeling of a stone pit, the major orientation of the quarry should be east -west to allow a large north surface to receive direct sunlight during the major part of the day. Development should be concentrated along the northern side of the pit to take advantage of the sun. This location will also shield the apartments from northern winter winds. Shading can be provided with vegetation and overhangs. This plan for development will also allow access and parking on the northern side where land is available and reserve the creek side for pedestrian use. The two minor orientations, northeast -southwest and northwest -southeast will funnel the prevailing southwesterly breezes through the pit providing ventillation and cooling during the summer. They also help orient activities within the pit toward the nat- ural recreational areas. Texture: The walls to which the apartments directly abutt should be left relatively smooth to aid in construction. Walls that are left open should vary in their degree of roughness, depending upon their aesthetic need. N ,lowIll/IL bow o� c dim ae9 ooe °, o 0 0 ooa�P no n o� / ODoD Op QUARRY FORM 26 ' undeveloped Iveaeovereel lane evee}ual gwrq llmi}s k �prtscnl•-quarry li this barrio Is 5V({IuutE a �e5aa} bui Id ra be ra�wn, J � fhia, bv(fu 15 wnp Wely effolve firagwb mosf of ik disco�c�. w, awsval burriew }he ore t�cnve Ir w v httl to k}e oar r m }I1e road. or ilus same (moo }he Some �, p oad to the of 9 ry q C�{ r p f `�{�' presto}Igshi ed jYvon+ o�vatlons y Alfs bu is I) IesS e4� a5 a r�o,x 0.�a dust barrg, w uundlnq dlref'f�odwent to . oarrt� ary eesfecLal y ,n e ance aria A �me. SLr�nun� }hm l,w o<bof lrr u,Sual lrt¢ , I, cle;druble 7uburben 9roWti1 ---► } t evv,n�ual quarry booby undeveloped het covered land durulahfi bad ' .. �..... --- I'i►.....I P+r;.cn} quarry hmi}s � __�_��_� this bu{{a n an afosb a +b"ia,r,�urIiYe. lr Luwe_ iu1bLeurtoin�rr�a+ri5t ednuovs�tr9y �Yr1 1n't ,nFw7Gitf.pm�'ox 'n Mai yia`m�k I-,p IRA, s pii a;var•o bum let�b Y01 expand. SECTIONAL VIEWS 27 bJ.rSOli[ )I €01Y11'i..:.t'{.�•':':;; i.` -': a _".`�`n'ranm .i�3;� ry�uLai -11ae. i� Ilw %rl gamat rote �r '�} � q,n�ry ba�md 1ozafal,e r -zoo ') 1' •1oU' MASTER PLAN it is believed th-at the of the abandoned q .. ." "".".`.� .. .+. .v uniqueness v .�Ic GAlG�IV VIICV quarry site would be wasted if a 'conventional" type of apartment complex is used. Some people might think that the fact that an apartment complex is located in a "hole" would be unique enough. But this is only a beginning. It is best to pick out a prominent characteristic of the site and repeat it in the structures. In this case it is the rough and uneven surface of a quarried wall. By capturing this character in the architec- ture a unity will result between the walls left open and the apartment structures. It is, therefore, suggested that the apartments be of modular units, stacked and placed in an irregular manner on a system of stepped tiers. 28 APARTMENTACCESS 30 CONCEPTUAL SKETCH 31 CONCURRENT LAND USE CONFLICTS The Crabtree Quarry site is already an illustration of many of the recommended proceedures for controlling problems of visual, noise, and dust pollution. There are various fac- tors that combine to result in this atypical quarry site. The old Duraleigh Road was moved from its original path along the ridge beside the quarry to a lower location on the oppo- site side of the ridge from the quarry pit --a natural earth screen resulted. The trees and forest understory growing on this bank were left standing --a natural vegetative screen resulted. Many of the techniques proposed in this report for alleviating land use conflicts are a standard practice — the use of water in crushing processes, controlled blasting, the use of settling ponds, and the use of physical safety pre- cautions. Indeed, all that is left for proposals is to suggest minute measueres to be taken for visual enhancement! Thus, the Crabtree Quarry exists as an example to other quarries as to what can be done to reduce the environment problems that are inherent toquarry operations. 33 PROPOSALS: Visual - The only bad view that Crabtree Quarry exhibits is to a traveler going north on Duraleigh Road. While descend- ing the hill before the bridge, he is presented with a fantastic view of the quarry, marred by the sight of the office and weigh station building. Therefore, it is proposed that this building be screened and a pleasing landscape be created at the entrance. This need not be an expensive undertaking for the method of screening with earth mounds, rocks, and vegeta- tion could be employed. 34 EXISTING PROPOSED 1 1 1 1 1 1 Safety - It is also proposed for pit edge safety that the more aesthetic solution of using screening mounds be incorporat- ed with the larce rocks now used. 35 EXISTING PROPOSED ^ � �. ��^' .G ' � D ��}�'I. ,o.'va .1• ?'• �f}.'-` ;4c� .sf .I..ea_f.1. V.1� �.dfA{t.-... °��y,�! � �?+};`�'t. r s � ,r,'y?,r v(n �f , o � t +►.. .,, � t f9 s o?. :�fi F �., Ic <i.5"n C ti � +� �rL t x �•� �}' - - e wt: it � 9 r' �r � �hd J` B. i - - '�,.r-� '��a�,.+'.%rrr ��.a ,t- �y �}� �'* •T'' jf ae"��' t� �� •' U '_ a A vc ,�!'T aj' t��'y.M:.� o � '�� - •�'Y � � .�' _ _ • rFrF `r? J N 4 S�,i ♦y �s, .. i Yf P Y `sl3 x� �r ,,p V� ,.`�+ o s - A h t . O*d, �° � r ,a+ y ya . (C� Ly r,�,- `'S' r •� ; ��...'�'^ -.-.c rv-s .� k >r"yK � o� � 5t � ; 1 S + � j }� 15.T'+l ^� � }'h � , � �,„ f , �• .O }• i - o o R � $�+- ,r t . }' „° fi,} � y.. ._ �- a Wit • �Pt . ' j �c L h.E -, �, �,s�` 7 tr ° P Q rh i t `- - �" 3' ;e, y��� ✓, �' o° .� ac' -_ "'` 'S� �� j .. Lr O O g o- SAS a�• ,n - - r.-. °$ �u. ' 9 dQ 1 Jos i'y,' _, - c a O° °C✓ � ,., O �`4 - � -. •'S L Lp y �.-:}'n'•fV, ✓y,- Y^"' ° o `r"o p �,po 04� 3 � t ,^ti`H�.; r j u Fb �� ^\Z�{• ° �'. � v �� .. •ova ,.gyp � '.f T< ,�` •. • 1 � ,► A .f R� }� .�t^Qyr����°�. ✓!\'�� � `� - ° o o '� r�l r.if4 ,.ifs � F f�'��i r'k--'�•4. . y'.- y', ��,��4 �Y 77 T ., 9 �- O � ��.� !' g � f �r p'iT :�t+\ '4 /•--tt' ` �. F ads. f�r� � T � j� r\,r - •ia r t ,'',i- - o d.°• _ i'. v^. . CI��,�ey-�*, �y^. fy°y�� •. R, ��,Qy. '414 LZ •y J: - ' l {..:Y.'°^` SST f yy .^d`-'►. a� 44 -"�� "' -` , i 'trs"i�iq ~o � off+'` `��r ..°��,.� ���,�f•J �` � , ' �tf '"''ti•'•i� 9 `� '� y to `• � `" A �� .,c , , ��� .,,�+r��, r. '' '�`��:' � ice, �r• L�, �'�' ���ar-�f,S`[t��. • • �r ` _,.. .•_a _�.�i-�r��.t' -rs�'' J'i�-. ✓.wi'rj.�� '� rq .� � d �r`s��.. C)7,�lt�R+�.r��) �� _ - ti,•/�. /`1 .et1 %., f,R, QUARRYING PROCEDURES f11 Clearina - The first step involved in the excavation of a new quarry site is the removal of all trees, shrubs, and un- desirable structures present. This allows the heavy equip- ment to maneuver easily over the site. The bulldozer is the most commonly used piece of equipment for the clearing operation. (2) Stripping - Stripping means the removal of all top -soil and sub -soil from the quarry site, exposing the stone deposit to be quarried. The basic machinery for this operation are bulldozers, scrapers, loaders, and power shovels. (3) Stockpiling - Stockpiling is done in conjuction with the stripping operation and consist of the storage of over -burden (top -soil and sub -soil) stripped away. In some processing much of the non -clay type overburden is used in the crusher 38 operation. Stockpiling is done in areas away from the quarry- ing operation, usually a marginal or never -to -be quarried area. (4) Blasting - Explosives are set in borings in the rock sur- face and detinated causing the rock to break up into various sizes which can be easily excavated. After the initial shoot- ings, the charges are set in an order so as to create a "bench- ing" effect. Controlled blasting techniques are used to insure maximum efficiency of charge and direction of explosion — as well as the least amount of noise. (5) Excavating -This process includes the removal of stone from the quarry and the transportation of that stone to near- by processing or crusher operations, wet quarrying and dry quarrying. In the wet quarrying, the operations proceed below the water table, requiring a pumping system to keep the quarry free of water. In general the dry quarrying opera- tions stay above the water table. (6) Processing - Raw stone is processed it through a series to crushers. Each crusher reduces the size of the stones until they reach the desired size. After crushing, the product may be mixed and stockpiled. (7) Transporting - The product is loaded into dump trucks which move to a set of scales for weighing. After weighing the trucks move the material off the quarry site to the job site. 39 OPERATIONAL EQUIPMENT (1) Front End Loader - The general use of the Loader is to load trucks at the excavation site and at the processing plant. Their operational cycle at the site is usually less than fifty feet, therefore, grade changes little affect their uses. The bucket capacity is up to six cubic yards, and the average turning radius is approximately twenty feet. Loaders were designed to provide the industry with a fast, maneuverable piece of equipment capable of loading loose material rapidly- (2) Scrapers - The main uses of the scraper are to strip the overburden earth and broken material covering the stone deposit and to stockpile the material. These machines have an advantage in their ability to load, haul and spread a seven- teen cubic yard load in one operation at speeds up to fifteen miles per hour. There are several varieties of scrapers. The more powerful ones are well suited to heavy stripping but are slower and less efficient over distances of 1500 feet than the lighter models. The average turning radius for all models 's twenty-five f__. rci: _:___.. :_ __r..__r _-___�:___u.....:" IJ 1WC11LY-1IVC ICGI. CIIIL:IGIIL.Y IJ ICuu(:Cu p lupul LIullaily wllll grade increases, and these machines are not well suited for inclement weather use. 40 iI 11 (3) Grader - The principal function of graders is finishing and shaping ratherthan digging ortransporting. This restricts their use in rock quarry operations and limits them to main- tenance quarry roadways bii8piny` of stockpiiea. uraders work efficiently over unlimited linear distances, but their high center of gravity limits their unassisted slope work to grades under twenty percent. (4) Trucks - In relation to rock quarryinn triickt f"ncrinn mainly as transportation equipment —taking rock from exca- vated areas to the processing plant and from there to the job site. These trucks can be classified in two categories. First is the slow, on -site trucks with capacities up to thirty or forty cubic years. The second is a smaller, faster road truck with sixty ton capacity and speeds of sixty miles per hour. 41 (5) Bulldozers - The versatility of the bulldozer is perhaps its strongest asset. These machines are used for a variety of shnrt rannari riigginn anrf tranennrtatinn npor.% inng, Thoy can work straight slopes of 45 degrees in stable material -- wide track models can easily work 20 degree slopes. Their design allows them to turn 90 degree corners in a distance of theirown length. But, high power and low speed limit their use to short distances. Their efficiency drops proportionally with distance. In grading operations, bulldozers clear land, strip over short distances, and perform miscellaneous clean up work. They are also used in shaping overburden and other rehabilitative work. (6) PnwP_r ShnvR(s-Pnworehn%iP1eA nno nffho fire+m h_ anized earth moving equipments. The average bucket ca- pacity is from four to five cubic yards —standard sizes go up to fourteen cubic yards. The shovels have a 360 degree operational area and an average digging radius of 35 feet. Their main limitation is in maneuverability due to the cumber- some boom and to the slow movements. 42 (7) Dragline- Thedraglinecombinestheboomoftheshovel and the bucket of the scraper. it lacks the digging strength of the shovel, but it counters with a long digging reach up to 250 feet and with a fast cycle time. Average bucket capa- cities are four to five cubic yards but may be as large as 85 cubic yards. Electrically powered draglines are gaining in popularity due to their reduced maintenance and silent op- eration. The dragline is used for both stripping and stock- piling, and its fast cycle makes it useful for loading trucks and hoppers. (8) Clamshell - The functions of both the dragline and the shovel can be performed by the clamshell—but not as effic- iently. It is widely used in sand and gravel operations for excavation, but its use in rock quarrying is limited to occas- ional' collection of loose material and to loading hoppers. (9) Belt Conveyors - Conveyors are cycling belts used to transport large volumes of loose material. They are adaptable to both flat and hilly terrain. Stationary conveyors can move material to processing plants located off the immediate quar- rying site. This is valuable in noise and dust reduction in de- veloped areas. The normal conveyor width is 30 inches, and operating at average speed, they can transport 520 cubic yards of material per hour. An adapted conveyor can trans- port material at any angle up to 90 degrees. Smaller, porta- ble conveyors are excellent for loading trucks and for work- ing with stockpiles due to their short cycle time and maneu- verability. 43 4 - - _�- is ':�'=S�"�'�""......-.•a.,r i d r— �nai>eae sit • .. L — u .,. -. ._ •1 .-- cam.... �..w.—_ '2'�_'�Vw�1dV C-.i ]p�� • i tA.. T..ii /F,! -` y.i;'... _� i '4�•\ ���� �f.% 1. Ir,r-i',•t/1 ,�{ /= ,,. .� '. � �/ .'� //7 �° /� ' I�f�':�� / �•.:'-9 s_„/�ceiV r w��� \t. r y\\ ��... 1 � I.� /. �� c 1`'$r��,�,� / - - -*r s \ j (` \ �_ ram. ] ,tG �I �` 11�Q �`, ,/ , ' �.. ° �'% . 7 -• "-\ ',•�' '�� i _ � _ i` 'lr� _..�i. u�ma I��\oo `�� •,��� � t..�f ;dal-./ 'i"�,J ,/�.. • l� �t � \ (` �1 f/j Pot y,"j Fy/ \ �.�, � l{`, � L , !' t /A,' / �tJ� ..• r J-� J��.� I.i { s �� L� \5 f/\\�/ /\//j\�`) /\�\y �\/ '< 4e ✓�1' j/lJj� ! \-_ �}l1 -- /�J� / ^✓_"1.':'SV y• e•/� ii� ~, kk'1 /J •..r,�e.. al .''C\I�..""tl ti 4f16 �f\e'I.fo E t.aa,. UMST '/, // �.\/ REED :•'f PARK i . •. txi o; cIEFx I' N a7 C1—tr ^�^, // l✓ _..�\ ��4/pfi \' \r� 5:�/\J �� ll✓ \( /VIIba1 /�( 5 \ .111 .. - I _ yr• i. /�",. `.�' c �� _ ry,� �`f � \,_n •�:�\ / /. p � J..,, �� 1 \�� � � +r '1 3/' . J - "-• �r"\`� 1111115] fu Y Y .";";r ✓5 rtyt! \`�lii:•, f. frill f \\. .; d Rt,i FIC, `l, .,l�+ i�E '�ir I � I- ZLLO 6. A GKK 1I0. RAGSDALE =D JSULTANTS, P.A. ENGINEERING -LANDSCAPE ARCH ITECTURE -SURVEYING •PHOTOGRAMMETRY ❑ SMITHFIELD OFFICE: 310 East Johnston Street, P.O. Box 1749, SmithUeld, North Carolina 27577 Telephone:(9191 934.7154 or 934.7155, Raleigh WATS Line: 828.2788 ■!��++ ❑ LILLINGTON OFFICE: B13 Main Street, PO. Box 760. C Lillinglon, North Carolina 27546 n� ! _ /�� Telephone: (9t9) 893.2156, Raleigh WATS Line: 832-4244V )' , RALEIGH OFFICE: Suite 36o WestChase One 4020 �140 �� I O� 1j `98� WeslChase Blvd. Raleigh, North Carolina 27607 (919) 832-6065 or 832-6043 � ,T r TOSf�r WE ARE SENDING YOU Plans/Prints Specifications ❑ Permit Applications LE,�FEn (OLI TnD n L1l1V5LV11��7LrilL OATS z �� JOB NO. U « -, ATTENTION RE VAttached ❑ Under separate cover via the following items: ❑ Survey Plats ❑ Copy of Letter ❑ Invoices ❑ Other. ❑ Certifications ❑ Calculations ❑ Contracts ❑ Shop Drawings ❑ Change Order ❑ Product Literature COPIES DATE NO. DESCRIPTION THESE ARE TRANSMITTED AS CHECKED BELOW: For approval ❑ For information ❑ For your use ❑ For record As requested ❑ For distribution ❑ For review and comment ❑ ❑ Resubmit copies for approval ❑ Submit copies for distribution ❑ Return copies COPY TO _ (�iia� d`r z1g(/. SIGNED: /r , . .' �: —. � . JY _ �_ __ _... - - _ _ p Qom. '!� I ., � V � 1 _. I't � � � /� .. � t .'.. y - I � 1 �� C'' ` e 11 c { i J, f i ,- � ,! j i � � I _ � _ -f fi ' i - ' � ' � I � � _ � W f :� i ' 1 � yl' � .' � � �_ .� . _.. __.._._ _ . , a _.. _.. __ .__ ._ t Page 7 of 12 Surface Drainage The affected land shall"be graded so as to prevent collection of pools of water that are, or likely to become, noxious or .foul. Necessary structures such as drainage ditches or conduits shall be constructed or installed when required to prevent such conditions. Blasting The operator shall provide to the Department a copy of the . findings of any seismic studies conducted at this facility. The operator shall make every reasonable effort to incorporate the studies' recommendations into the production blasting program. The following blasting conditions shall be observed by the operator to prevent hazard to persons and adjacent property from thrown rock or vibrations: A. In all blasting operations, except as hereinafter otherwise provided, the maximum beak particle velocity of any component ofground motion shall not exceed 1 inch per second at the immediate location of any building outside of the permitted area regularly occupied by human beings such as dwelling house, church, school, public -building, or commercial or institutional building outside of the permitted area. The operator shall monitor each blast with a seismograph. B. Airblast overpressure shall not exceed 128 decibels linear (DBL) as measured at the immediate location of any regularly occupied building outside of the permitted area such as any dwelling house, church, school, public building, or commercial or institutional building. If vibration/airblast limits are exceeded, the operator shall immediately report the event with causes and corrective actions to the Department. Use of explosives at the blast site that produced the excessive reading shall cease until corrective actions approved by the Department have been taken. However, blasting may occur in other approved areas within the permitted boundary. Authorization to blast at the blast site may be granted at the time of the verbal reporting of the high airblast reading if the circumstances justify verbal approval. Failure to report will constitute a permit violation. C. The operator shall take all reasonable precautions to insure that flyrock is not thrown beyond areas where the access is temporarily or permanently guarded by the operator. Should flyrock occur beyond the permitted and guarded area, or the level in Item A. above is exceeded, the operator shall report the incident to the Department immediately and further use of explosive at the site shall be immediately suspended until the following actions have been taken: a Page 8 of 12 4 1. A thorough investigation as to the cause(s) of the incident shall be conducted. 2. A satisfactory report detailing the investigation shall be provided to the Department within 10 days of the incident. Said report shall, at a minimum, document the cause(s) of the incident along with tech„ica a � ,at.1L.a.1 and i management actions that will be taken to prevent further incidents. l The report shall meet with the approval of the Department V before blasting may resur«e at the site. Failure to take corrective measures to prevent flyrock and repeated instances of flyrock shall be considered a violation of this permit. D. T•he operator shall maintain records on each individual blast describing: the total number of holes; pattern of holes and delay of intervals; depth and size of holes; type and total pounds of explosives; maximum pounds per delay interval; amount of stemming and•burden for each hole; blast location; distance from blast to'closest off -site occupied structure; and weather conditions at the time of the blast. Records shall be maintained at the permittee's mine office and copies shall be provided to the Department upon request. E. The operator shall, when requested by the Department, give 24 hour advance notice to the Land Quality Section prior to any blast during a period for which notice is requested. High Wall Barrier A physical barrier consisting of large boulders placed end -to -end (a minimum of four (4) feet high) or concrete barriers or fencing, both as specified in the Crabtree Quarry Permit Renewal Drawings dated January 1992 and revised April 1992, shall be maintained at all times around the perimeter of any highwall to prevent inadvertent public access. in addition, a minimum 25 foot wide horizontal safety bench shall be provided at the junction between the top of rock and the toe of any overburden cut slope. 10. Visual Screening A. Existing vegetation shall be maintained between the mane and public thoroughfares to screen the operation from the public. Additional screening methods, such as constructing earthen berms, shall be employed as deemed appropriate by the Department. NORTH CAFt4A DEPARTMENT OF 1u, ENVIRONMENT AND NATURAL RESOURCES _js„�+ti�:� �.,�• DIV1SfON OF LANE) RESOURCES June 17, 1999 1! ILI L) :, .. • Mr. Sig Hutchinson :ham• �>. "-.i_ 520 Brittany Bay West 'J'AMEg y, HUNTJR. ,GOVKRNOR ;.� Raleigh, North Carolina 27614 RE: Hanson Aggregates Carolina •r•�+t;. :;�y ;s� L1 QUlree Huai i y , W4ITIEhLcnEVITT4 "" x f 'ir� Permit No. 92-03 SECAETARYt ••i.• � t R Wake County Dear Hutchinson: P.G P.E.DIRHC -REC-TOR -i" This letter is in response to your questions regarding blasting at ;,�, ANti STATE 'G OLOGIlT.:': the Crabtree Quarry. Hanson Aggregates Carolina has an excellent wYr"" .. ; .r 7Y�- blasting record at this site with regard to compliance with their mining r n� permit's blasting conditions. .ij,.r• .:,.11• -.fir Our office has completed its review of shot records related to SYi several more recent blasts occurring in 1993, 1996 and 1998 blasts at their Crabtree Quarry, as well as records from earlier years. It was found that Hanson Aggregates Carolina was well within the blasting requirements of their mining permit. 1 -4 The more recent records (1993 to date) that this office has on file indicate that peak particle velocities, a measurement of ground vibration fir_,: }.'� i with units in inches per second (ips), were well below the maximum ., .. . . �.y:Yo,,. allowable limit of 1.0 ips specified in Hanson Aggregates Carolina's mining permit. More specifically, all recorded values were at or below —=� 13 percent of the maximum limit of 1.0 ips. According to extensive research b the U.S. Bureau of Mines and others, y particle velocities ' below 0.5 ips effectively eliminate the possibility of any structural ' ? damage. All airblast readings, a measurement of the atmospheric pressure +. -- wave (overpressure) with units in psi or dBL, were below the maximum .F . allowable limit of 128 dBL specified in Hanson Aggregates Carolina mining- permit and well below the U. S. Bureau of Mine's recognized `"" level of 164 dBL for prevention of glass breakage. A key point worth �¢ .• ,�c.� ..r.•�.•��.11 noting is that glass breakage occurs at much lower levels of overpressure than structural damage, such as cracking plaster. LAND QUALITY SECTION (919) 733.4574 FAX (919) 733-2876 yy � GEOLOGICAL SURVEY SECTION (919) 733-2423 FAX (919) 733.0900 '-• = ,f,�q;,3 F.O. aax 27687, RALEIGH, NORTH CAROUNA 2761 1.7687 TELEPHONE (91 9)733-3833 FAX (91 9)71 5-8801 1M' � •• AN EgUAL OPPORTUNITY/ AFFIRMATIVC ACTION EMPLOYER - 50% RECYCLED/10q POST-CONSVMER PAPER Mr. Hutchinson Page Two In addition, our records do not indicate that a single high air blast recording was ever reported from this site. Thank you for your interest in this matter. Hopefully we have answered your concerns a('equately if you should have any, Uadditionol questions or concerns please .-..-.•.vv.�.v adequately. i. rvu ..���vu�� ��uvV uliy uVVill Vllul I�UGJLIUIiJ VI VVIII'GIIIJ �./IGa.IG advise at (919) 733-4574. Sincerely, ,!J'u u'i".� Judith A. Wehner Assistant State Mining Specialist Land Quality Section JW cc: Mr. John Holley, P.E. *. 1 '6 NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF LAND RESOURCES May 27, 19941 Ms. Gloria Davis 4113 John S. Raboteau Wynd Raleigh, North Carolina 27612 RE: Blasting Complaint Crabtree Quarry Permit No. 92-03 Wake County Dear Ms. Davis: Our office has completed its review of Hanson Aggregate Carolina's shot records related to the June 1998 blasts at their Crabtree Quarry. It was found that Hanson Aggregate Carolina was within the blasting requirements of their mining permit. All peak particle velocities, a measurement of ground vibration with units in inches per second (ips), were well below the maximum allowable limit of 1.0 ips specified in Hanson Aggregate Carolina's mining permit. More specifically, all recorded values were at or below 16 per cent of the maximum limit of 1.0 ips. According to extensive research by the U.S. Bureau of Mines and others, particle velocities below 0.5 ips effectively eliminate the possibility of any structural damage. All airbiast readings, a measurement of the atmospheric pressure .A17ve (overpressure) with t"nitc in nci nr rjRl wprP hPlnvv the maXimllm allowable limit of 128 dBL specified in Hanson Aggregate Carolina's mining permit and well below the U. S. Bureau of Mine's recognized level of 164 dBL for prevention of glass breakage. A key point worth noting is that glass breakage occurs at much lower levels of overpressure than structural damage, such as cracking plaster. LAND QUALITY SECTION (919) 733.4574 FAX (919) 733.2076 GEOLOGICAL. SURVEY SECTION (999) 733-2423 FAX (919) 733-0900 P.O. Box 27687, RALEIGH, NORTH CAROLINA 276t 1-7687 TELEPHONE 19191 733-3R33 FAR rn 1 9I 71 ,-nnni AN EQUAL OPPORTUNITY / AFFIRMATIVE ACTION EMPLOYER - 50% RECYCLED/10% POST -CONSUMER PAPLP . 0 s Ms. Davis Page Two Thank you for your interest and patience in this matter. Hopefully we have answered your concerns adequately. If you should have any additional questions or concerns please advise at (919) 733-4574. Sincerely, N' W 64,41 Judith A. Wehner- Assistant State Mining Specialist Land Quality Section cc: Mr. John Holley, P.E. NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF LAND RESOURCES May 27, 1999 Mr. James Sprinkle Hanson Aggregates East, Inc. P.O. Box 13983 Research Triangle Park, North Carolina 27709-3983 RE: Blasting Complaint Crabtree Quarry Permit No. 92-03 Wake County Neuse River Basin Dear Mr. Sprinkle: The review has been cuffi ileted on t1 ie shot records you previously submitted for the June 1998 blasts at the Crabtree Quarry. Your company has been found to be in compliance with the blasting requirements of your mining permit. I have already notified the complainant, Ms. Gloria Davis, of our findings. Thank you for your continued cooperation. Sincerely, - , A (id4-tc, Judith A. Wehner Assistant State Mining Specialist Land Quality Section JW cc: Mr. John Halley, P.E. w/ blasting records LAND QUALITY SECTION (91 9) 733-4574 FAX (919) 733-2876 GEOL.OGICAl. SURVEY SECTION (919) 733-2423 FAX (9t9) 733-0900 P.O. BOX 27687, RALEIGH, NORTH CAROLINA 2761 1.7687 TELEP"ONE (91 9) 733-31333 FAX (919) 71 5-8801 AN EgUAL OPPORTUN I TV / AFFIRMATIVE ACTION EMPLOYER - 50q RECYCI.CD/10q POST -CONSUMER PAPER c J �--�—^..T ten.,--.--.. —«...—»—.—. _ _ �� �..—� r� _ — __ _`-- _ �. .— __ - :.,--w---�—tom.—�--».—. .—r- � � _ -- . � _ _ __�.�� '- _ _�—_�__�_ ..... __�.- —•--'— _._..—. � ..-__..-_--•— _._ _ _ — —y_'•. , _ _i — _.__.—_ �. .._ __ —' — • _ _ "--- . _•�_ �._. .. � t�— LAND QUALITY SECTION BLASTING ANALYSIS WORKSHEET (' = dennteS fields where input data is needed) Permit No.*: 92-03 Permittee*: BENCHMARK CAROLINA AGGREGATES Mine Name*: crabtree quiarry Blast Report No.*: 32 Date of Blast*: 06/01/98 Time of Blast*: 13:07 Peak Particle Velocity Check: D = Distance to closest offsite occupied structure (ft): D* = 1800.00 W = Maximum pounds of explosives per delay (pounds): W* = 98.00 SD = Scaled Distance: SD = D/W110.5 SD = 181.83 V = Peak Particle Velocity (inches per second): V = 160 (SD)^-1.6 V = 0.04--- (*max. limit in mining permit is: V = 1.0 ips) Based on known distances from the blast to the seismograph and any additional location, the expected vibration level can be estimated at the second location as follows: V = Particle velocity measured by the seismograph (ips): V* = 0.07 DS = Distance from blast to seismograph (ft): DS* = 1800.00 d = Distance from blast to second location (ft d* = 1800.00 PPV = Theoretical peals particle velocity at the closest offsite occupied structure (ips): PPV = V(DS/d)"1.5 PPV= 0.0700 Airblast (Overpressure) Check: P = Unconfined Airblast/Overpressure (psi): P = 82 (DIW^0.33)^-1.2 P = 0.062519 To convert (psi) to (dBL): (P/2.9 x 10"-9)log x 20 P = 146.67 AB = Confined Airblast/Overpressure (dBL): AB = P (dBL) - 35 dBL (for quarry situation) AB= 111.67 (*max. limit in mining permit is: AB = /90 dBL) �r 9 Explosives Column Check: (this is a very approximate method based upon numerous assumptions; specific densities may vary greatly depending upon the type and manufacturer of the explosive products used in the shot; must consider each explosive used; refer to DLinnnt Hanrthnnk fnr arttual Spr) nthenui zP nce the fnllnwinn•) Assumptions (per Ireco): If "straight" emulsion is used, use SPD (specific density) = 1.20 If a "blend/slurry" is used, use SPD (specific density) = 1.25 if "straight" anfo is used, use SPD (specific density) = 0.85 Ratio between explosives: Total pounds of Explos. #1' = 4233.00 Total pounds of Explos. #2* = 550.00 Ratio between explosives = 7.70 Average pounds of explosives used per hole (pounds)* = 98.00 Breakdown of average pounds of explosives per hole due to ratio: Explosive #1 = 85.27 Explosive #2 = 12.73 SPD = Specific densities for each explosive: SPD for Explos. #1* = 1.25 SPD for Explos. #2* = 0.84 HD = Hole Diameter Used in Shot (inches): HD* = 4.00 LD Loading Density (pounds per foot of column): LD = SPD(.34)(HD)"2 LD for Explos. #1 = 6.80 LD for Explos. #2 = 4.57 Explosive column height for each explosive (feet): Explos. #1 = 12.54 Explos. #2 = 2.79 Total explos. column height = 15.33 Stemming height used in shot (feet)* = 6.00 Total height of explosive column(s) and stemming in the hole = 21.33 Total depth of hole denoted on the blasting report for the shot in question* = 30.00 Analysis Completed By: ` Date: S Xoz Z2 2 0 LAND QUALITY SECTION BLASTING ANALYSIS WORKSHEET (* = denotes fields where input data is needed) Permit No.*: 92-03 Permittee*: BENCHMARK CAROLINA AGGREGATES Mine Name*: crabtree quiarry Blast Report No.*: 33 Peak Particle Velocity Check: Date of Blast: 06/02/98 Time of Blast*: 11:22 D = Distance to closest offsite occupied structure (ft): D* = 1800.00 W Maximum pounds of explosives per delay (pounds): W* = 47.00 SD = Scaled Distance: SD = DIW"0.5 SD = 262.56 V = Peak Particle Velocity (inches per second): V = 160 (SD)^-1.6 V = 0.02 (*max. limit in mining permit is: V = 1.0 ips) Based on known distances from the blast to the seismograph and any additional location, the expected vibration level can be estimated at the second location as follows: V = Particle velocity measured by the seismograph (ips): V* = 0.00 DS = Distance from blast to seismograph (ft): DS* = 1800,00 d = Distance from blast to second location (ft): d* = 1800.00 PPV = Theoretical peak particle velocity at the closest offsite occupied structure (ips): PPV = V(DSId)"1.5 PPV= 0.0000 Airblast (Overpressure) Check: P = Unconfined Airblast./Overpressure (psi): P = 82 (D/W'0.33)^-1.2 P = 0.046734 To convert (psi) to (dBL): (PI2.9 x 10"-9)log x 20 P = 144.14 AB = Confined Airblast/Overpressure (dBL): AB = P (dBL) - 35 dBL (for quarry situation) AB= 109.14 (*max. limit in mining permit is: AB = dBL) 0 Explosives Column Check: (this is a very approximate method based upon numerous assumptions; specific densities may vary greatly depending upon the type and manufacturer of the explosive products used in the shot; must consider each explosive used; refer to Dupont Handbook for actual SPD, otherwise use the following:) Assumptions (per Ireco): If "straight" emulsion is used, use SPD (specific density) = 1.20 If a "blend/slurry" is used, use SPD (specific density) = 1.25 If "straight" anfo is used, use SPD (specific density) = 0.85 Ratio between explosives: Total pounds of Explos. #1' = 1627.00 Total pounds of Explos. #2* = NIA Ratio between explosives = NIA Average pounds of explosives used per hole (pounds)* = 47.00 Breakdown of average pounds of explosives per hole due to ratio: Explosive #1 = 1627.00 Explosive #2 = NIA SPD = Specific densities for each explosive: SPD for Explos. #1* = 1.25 SPD for Explos. #2* = NIA HD = Hole Diameter Used in Shot (inches): HD* = 4.00 LD = Loading Density (pounds per foot of column): LD = SPD(.34)(HD)12 LD for Explos. #1 = 6.80 LD for Explos. #2 = NIA Explosive column height for each explosive (feet): Explos. #1 = 6.91 Explos. #2 = NIA Total explos. column height = 6.91 Stemming height used in shot (feet)" = 7.00 Total height of explosive column(s) and stemming in the hole = 13.91 Total depth of hole denoted on the blasting report for the shot in question* = 20.00 Analysis Completed By: L, Date: 0 LAND QUALITY SECTION BLASTING ANALYSIS WORKSHEET (* = denotes fields where innut data is needed) Permit No.*: 92-03 Permittee*: BENCHMARK CAROLINA AGGREGATES Mine Name*: crabtree quiarry Blast Report No.*:i4 Peak Particle Velocity Check: Date of Blast*: 06/05/98 Time of Blast*: 09:56 D = Distance to closest offsite occupied structure (ft): D* = 1800.00 W = Maximum pounds of explosives per delay (pounds): W* = 132.00 SD = Scaled Distance: SD = DIW^0.5 SD = 156.67 V = Peak Particle Velocity (inches per second): V = 160 (SD)^-1.6 V = 0.05' (*max. limit in mining permit is: V = 1.0 ips) Based on known distances from the blast to the seismograph and any additional location, the expected vibration level can be estimated at the second location as Follows: V = Particle velocity measured by the seismograph (ips): V* = 0.04 DS = Distance from blast to seismograph (ft): DS* = 1800.00 d = Distance from blast to second location (ft): d* = 1800.00 PPV = Theoretical peak particle velocity at the closest offsite occupied structure (ips): PPV = V(DS/d)"1.5 PPV= 0.0400 Airblast (Overpressure) Check: P = Unconfined Airblast/Overpressure (psi): P = 82 (D[WAO.33)"-1.2 P = 0.070345 To convert (psi) to (dBL): (P12.9 x 10^-9)log x 20 P = 147.70 AB = Confined Airblast/Overpressure (dBL]:_ CAB = P (dBL) - 35 dBL (for quarry situation) AB= 112.70 (*max. limit in mining permit is:, dBL) Explosives Column Check: (this is a very approximate method based upon numerous assumptions; specific densities may vary greatly depending upon the type and manufacturer of the explosive products used in the shot; must consider each explosive used; refer to Dupont Handbook for actual SPD, otherwise use the following:) Assumptions (per Ireco): If "straight' emulsion is used, use SPD (specific density) = 1.20 If a "blend/slurry" is used, use SPD (specific density) = 1.25 If "straight" anfo is used, use SPD (specific density) = 0.85 Ratio between explosives: Total pounds of Explos. #1 * = 1585.00 Total pounds of Explos. #2* = 2050.00 Ratio between explosives = 0.77 Average pounds of explosives used per hole (pounds)* = 132.00 Breakdown of average pounds of explosives per hole due to ratio: Explosive #1 = -38.73 Explosive #2 = 170.73 SPD = Specific densities for each explosive: SPD for Explos. #1 * = 1.25 SPD for Explos. #2* = 0.84 HD = Hole Diameter Used in Shot (inches): HD* = 4.00 LD = Loading Density (pounds per foot of column): LD = SPD(.34)(HD)^2 LD for Explos. #1 = 6.80 LD for Explos. #2 = 4.57 Explosive column height for each explosive (feet): Explos. #1 = -5.69 Explos. #2 = 37.36 Total explos, column height = 31.67 Stemming height used in shot (feet)* = 7.00 Total height of explosive column(s) and stemming in the hole = 38.67 Total depth of hole denoted on the blasting report for the shot in question* = 37.00 Analysis Completed By: Date: .0 LAND QUALITY SECTION BLASTING ANALYSIS WORKSHEET (* = denotes fields where input data is needed) Permit No.*: 92-03 Permittee*: BENCHMARK CAROLINA AGGREGATES Mine Name*: crabtree quiarry Blast Report No.*: 35 Peak Particle Velocity Check: Date of Blast*: 06/09/98 Time of Blast*: 13:01 D = Distance to closest offsite occupied structure (ft): D* = 1800.00 W = Maximum pounds of explosives per delay (pounds): W* = 432.00 SD = Scaled Distance: SD = DIW110.5 SD = 86.60 V = Peak Particle Velocity (inches per second): V = 160 (SD)^-1.6 V = 0.13 (*max. limit in mining permit is: V = 1.0 ips) Based on known distances from the blast to the seismograph and any additional location, the expected vibration level can be estimated at the second location as follows: V = Particle velocity measured by the seismograph (ips): V* = 0.03 DS = Distance from blast to seismograph (ft): DS* = 1800.00 d = Distance from blast to second location (ft): d* = 1800.00 PPV = Theoretical peak particle velocity at the closest offsite occupied structure (ips): PPV = V(DS/d)^1.5 PPV= 0.0300 Airblast (Overpressure) Check: P = Unconfined Airblast/Overpressure (psi): P = 82 (D/W^0.33)^-1.2 P = 0.112496 To convert (psi) to (dBL): (P/2.9 x 10^-9)log x 20 P = 151.77 AB =Confined Airblast/Overpressure (dB AB = P (dBL) - 35 dBL (for quarry situation) AB= 116.77 (*max. limit in mining permit is: AB = dBL) 0 Explosives Column Check: (this is a very approximate method based upon numerous assumptions; specific densities may vary greatly depending upon the type and manufacturer of the explosive products used in the shot; must consider each explosive used; refer to Dupont Handbook for actual SPD, otherwise use the following:) Assumptions (per Ireco): If "straight" emulsion is used, use SPD (specific density) = 1.20 If a "blend/slurry" is used, use SPD-(specific density) = 1.25 If "straight" anfo is used, use SPD (specific density) = 0.85 Ratio between explosives: Total pounds of Explos. #1* = 3677.00 Total pounds of Explos. #2* = 3750.00 Ratio between explosives = 0.98 Average pounds of explosives used per hole (pounds)* = 108.00 RrenLiinum of o--- nnunrir of -= —iv— nnr hnln A.— +- —+;— VIVGInwvvvll VI uvY i ILJ. V FIVV IIVJ VI V FJIVJIVJ FJVI IIVIV VUV LW IQLIV. Explosive #1 = -2.14 Explosive #2 = 110.14 SPD = Specific densities for each explosive: SPD for Explos. #1 " = 1.25 SPD for Explos. #2* = 0.84 HD = Hole Diameter Used in Shot (inches): HD* = 4.00 LD = Loading Density (pounds per foot of column): LD = SPD(.34)(HD)"2 LD for Explos. #1 = 6.80 LD for Explos. #2 = 4.57 Explosive column height for each explosive (feet): Explos. #1 = -0.32 Explos. #2 = 24.10 Total explos. column height = 23.79 Stemming height used in shot (feet)" = 8,00 Total height of explosive column(s) and stemming in the hole = 31.79 Total depth of hole denoted on the blasting report for the shot in question* = 32.00• Analysis Completed By: Date: E 0 LAND QUALITY SECTION BLASTING ANALYSIS WORKSHEET l* = rlenntes fields where input data is neer1er11 Permit No.*: 92-03 Permittee*: BENCHMARK CAROLINA AGGREGATES Mine Name*: crabtree quiarry Blast Report No.*: 36 Peak Particle Velocity Check: Date of Blast*: 06/11/98 Time of Blast*: 12:53 D = Distance to closest offsite occupied structure (ft): D* = 1800.00 W = Maximum pounds of explosives per delay (pounds): W* = 113.00 SD = Scaled Distance: SD = D/W"0.5 SD = 169.33 V = Peak Particle Velocity (inches per second): V = 160 (SD)"-1.6 V = 0.04 (*max. limit in mining permit is: V = 1.0 ips) Based on known distances from the blast to the seismograph and any additional location, the expected vibration level can be estimated at the second location as follows: V = Particle velocity measured by the seismograph (ips): V* = 0.14 DS = Distance from blast to seismograph (ft): DS* = 1800.00 d = Distance from blast to second location (ft): d* = 1800.00 PPV = Theoretical peak particle velocity at the closest offsite occupied structure (ips): PPV = V(DS/d)"1.5 PPV= 0.1400 Airblast (Overpressure) Check: P = Unconfined AirblasUOverpressure (psi): P = 82 (D/W"0.33)"-1.2 P = 0.066146 To convert (psi) to (dBL): (P/2.9 x 10^-9)log x 20 P = 147.16 AB =Confined AirblastlOverpressure (dB �AB = P (dBL) - 35 dBL (for quarry situation) AB= 112.16 (*max. limit in mining permit is: AB = dBL) • Explosives Column Check: (this is a very approximate method based upon numerous assumptions; specific densities may vary greatly depending upon the type and manufacturer of the explosive products used in the shot; must consider each explosive used; refer to Dunont Handbook for actual SPD otherwise nca tha fnlinwinn•1 Assumptions (per Ireco): if "straight" emulsion is used, use SPD (specific density) = 1.20 If a "blend/slurry" is used, use SPD (specific density) = 1.25 If "straight" anfo is used, use SPD (specific density) = 0.85 Ratio between explosives: Total pounds of Explos. #1 * = 2294.00 Total pounds of Explos. #2* = 3800.00 Ratio between explosives = 0.60 Average pounds of explosives used per hole (pounds)* = 113.00 Breakdown of average pounds of explosives per hole due to ratio: Explosive #1 = -74.18 Explosive #2 = 187.18 SPD = Specific densities for each explosive: SPD for Explos. #1 * = 1.25 SPD for Explos. #2* = 0.84 HD = Hole Diameter Used in Shot (inches): HD* = 4.00 LD = Loading Density (pounds per foot of column): LD = SPD(.34)(HD)12 LD for Explos. #1 = 6.80 LD for Explos. #2 = 4.57 Explosive column height for each explosive (feet): Explos. #1 = -10.91 Explos. #2 = 40.96 Total explos. column height = 30.05 Stemming height used in shot (feet)* = 6.00 Total height of explosive column(s) and stemming in the hole = 36.05 Total depth of hole denoted on the blasting report for the shot in question* = 30.00 Analysis Completed By: v " i Date: 10 LAND QUALITY SECTION BLASTING ANALYSIS WORKSHEET (* = denotes fields where input data is needed) Permit No.*: 92-03 Permittee*: BENCHMARK CAROLINA AGGREGATES Mine Name*: crabtree quiarry Blast Report No.*: 37 Peak Particle Velocity Check: Date of Blast*: 06/16/99 Time of Blast*: 13:59 D = Distance to closest offsite occupied structure MY D* = 2100.00 W = Maximum pounds of explosives per delay (pounds): W* = 236.00 SD = Scaled Distance: SD = D/W"0.5 SD = 136.70 %I - 1!-AQn /[1n\A VrGdR n[.�:VIG VGIVl:aj�:.l.GJ .eI se,V.0v -.@ l/- n .AC IVVk0u)iV v VVV (*max. limit in mining permit is: V = 1.0 ips) Based on known distances from the blast to the seismograph and any additional location, the expected vibration level can be estimated at the second location as follows: V = Particle velocity measured by the seismograph (ips): V* = 0.05 DS = Distance from blast to seismograph (ft): DS* = 2100.00 d = Distance from Mast to second location (ft): d* = 2100.00 PPV = Theoretical peak particle velocity at the closest offsite occupied structure (ips): PPV = V(DS/d)"1.5 PPV= 0.0500 Airblast (Overpressure) Check: P = Unconfined Airblast/Overpressure (psi): P = 82 (D/W"0.33)"-1.2 P = 0.073591 To convert (psi) to (dBL): (P/2.9 x 10"-9)log x 20 P = 148.09 AB = Confined Airblast/Overpressure (dBL)- AB = P (dBL) - 35 dBL (for quarry situation) AB= 113.09 (*max. limit in mining permit is: AB = dBL) 0 0 Explosives Column Check: (this is a very approximate method based upon numerous assumptions; specific densities may vary greatly depending upon the type and manufacturer of the explosive products used in the shot; must consider each explosive used; refer to Dupont Handbook for actual SPD, otherwise use the following:) Assumptions (per Ireco): If "straight" emulsion is used, use SPD (specific density) = 1.20 If a "blend/slurry" is used, use SPD (specific density) = 1.25 If "straight" anfo is used, use SPD (specific density) = 0.85 Ratio between explosives: Total pounds of Explos. #1* = 4034.00 Total pounds of Explos. #2* = 5400.00 Ratio between explosives = 0.75 Average pounds of explosives used per hole (pounds)* = 118.00 Breakdown of average pounds of explosives per hole due to ratio: Explosive #1 = -39.96 Explosive #2 = 157.96 SPD = Specific densities for each explosive: SPD for Explos. #1 * = 1.25 SPD for Explos. #2* = 0.84 HD = Hole Diameter Used in Shot (inches): HD* = 4.00 LD = Loading Density (pounds per foot of column): LID = SPD(.34)(HD)"2 LID for Explos. #1 = 6.80 LD for Explos. #2 = 4.57 Explosive column height for each explosive (feet): Explos. #1 = -5.88 Explos. #2 = 34.57 Total explos. column height = 28.69 Stemming height used in shot (feet)* = 6.00 Total height of explosive column(s) and stemming in the hole = 34.69 Total depth of hole denoted on the blasting report for the shot in question* = 30.00 Analysis Completed By: i/" Date: a LAND QUALITY SECTION BLASTING ANALYSIS WORKSHEET (" = denotes fields where input data is needed) Permit No.*: 92-03 Permittee*: BENCHMARK CAROLINA AGGREGATES Mine Name*: crabtree quiarry Blast Report No.*: 38 Date of Blast': 06/19/98 Time of Blast*: 13:04 Peak Particle Velocity Check: D = Distance to closest offsite occupied structure (ft): D" = 2100.00 W = Maximum pounds of explosives per delay (pounds): W* = 244.00 SD = Scaled Distance: SD = D/W"0.5 SD = 134.44 V = Peak Particle Velocity (inches per second): V = 160 (SD)"-1.6 V = 0.06 (*max. limit in mining permit is: V = 1.0 ips) Based on known distances from the blast to the seismograph and any additional location, the expected vibration level can be estimated at the second location as follows: V = Particle velocity measured by the seismograph (ips): V" = 0.04 DS = Distance from blast to seismograph (ft): DS* = 2100.00 d = Distance from blast to second location (ft): d* = 2100.00 PPV = Theoretical peak particle velocity at the closest offsite occupied structure (ips): PPV = V(DS/d)11.5 PPV= 0.0400 Airblast (Overpressure) Check: P = Unconfined Airblast/Overpressure (psi): P = 82 (D/W^0.33)1-1.2 P = 0.074569 To convert (psi) to (dBL): (P/2.9 x 10^-9)log x 20 P = 148.20 AB = Confined Airblast/Overpressure (dBL): AB = P (dBL) - 35 dBL (for quarry situation) AB= 113.20 (*max. limit in mining permit is: AB = QA dBL) 0 Explosives Column Check: (this is a very approximate method based upon numerous assumptions; specific densities may vary greatly depending upon the type and manufacturer of the explosive products used in the shot; must consider each explosive used; refer to Dupont Handbook for actual SPD, otherwise use the following:) Assumptions (per Ireco): If "straight" emulsion is used, use SPD (specific density) = 1.20 If a "blend/slurry" is used, use SPD (specific density) = 1.25 if "straight" anfo is used, use SPD (specific density) = 0.85 Ratio between explosives: Total pounds of Explos. W = 6550.00 Total pounds of Explos. #2` = 668.00 Ratio between explosives = 9.81 Average pounds of explosives used per hole (pounds)* = 122.00 Breakdown of average pounds of explosives per hole due to ratio: Explosive #1 = 109.56 Explosive #2 = 12.44 SPD = Specific densities for each explosive: SPD for Explos. #1" = 0.84 SPD for Explos. #2' = 1.25 HD = Hole Diameter Used in Shot (inches): HD" = 4.00 LD = Loading Density (pounds per foot of column): LD = SPD(.34)(HD)"2 LD for Explos. #1 = 4.57 LD for Explos. #2 = 6.80 Explosive column height for each explosive (feet): Explos. #1 = 23.98 Explos. #2 = 1.83 Total explos. column height = 25.81 Stemming height used in shot (feet)` = 6.00 Total height of explosive column(s) and stemming in the hole = 31.81 Total depth of hole denoted on the blasting report for the shot in question" = 30.00 Analysis Completed By: Date: e2e?� O 0) 0 0 LAND QUALITY SECTION BLASTING ANALYSIS WORKSHEET (* = denotes fields where input data is needed) Permit No.*: 92-03 Permittee*: BENCHMARK CAROLINA AGGREGATES Mine Name*: crabtree quiarry Blast Report No.*: 39 Peak Particle Velocity Check: Date of Blast*: 06/23/98 Time of Blast*: 11:06 D = Distance to closest offsite occupied structure (ft): D* = 2100.00 W Maximum pounds of explosives per delay (pounds): W* = 129.00 SD = Scaled Distance: SD = D/W"0.5 SD = 184.89 V = Peak Particle Velocity (inches per second): V = 160 (SD)^-1.6 V = 0.04 (*max. limit in mining permit is: V = 1.0 ips) Based on known distances from the blast to the seismograph and any additional location, the expected vibration level can be estimated at the second location as follows: V = Particle velocity measured by the seismograph (ips): V* = 0.04 DS = Distance from blast to seismograph (ft): DS* = 2100.00 d = Distance from blast to second location (ft): d* = 2100.00 PPV = Theoretical peak particle velocity at the closest offsite occupied structure (ips): PPV = V(DS/d)11.5 PPV= 0.0400 Airblast (Overpressure) Check: P = Unconfined Airblast/Overpressure (psi): P = 82 (D/W^0.33)"-1.2 P = 0.057935 To convert (psi) to (dBL): (P/2.9 x 10^-9)log x 20 P = 146.01 AB = Confined Airblast/Overpressure (dBt L _ AB = P (dBL) - 35 dBL (for quarry situation) AB= 111.01 (*max. limit in mining permit is: AB = dBL) • Explosives Column Check: (this is a very approximate method based upon numerous assumptions; specific densities may vary greatly depending upon the type and manufacturer of the explosive products used in the shot; must consider each explosive used; refer to Dupont Handbook for actual SPD, otherwise use the following:) Assumptions (per lreco): If "straight" emulsion is used, use SPD (specific density) = 1.20 If a "blend/slurry" is used, use SPD (specific density) = 1.25 If "straight' anfo is used, use SPD (specific density) = 0.85 Ratio between explosives: Total pounds of Explos. #1* = 3075.00 Total pounds of Explos. #2* = 2509.00 Ratio between explosives = 1.23 Average pounds of explosives used per hole (pounds)* = 129.00 Breakdown of average pounds of explosives per hole due to ratio: Explosive #1 = 23.74 Explosive #2 = 105.26 SPD = Specific densities for each explosive: SPD for Explos. #1 * = 1.25 SPD for Explos. #2* = 0.84 HD = Hole Diameter Used in Shot (inches): HD* = 4.00 LD = Loading Density (pounds per foot of column): LD = SPD(.34)(HD)"2 LD for Explos. #1 = 6.80 LD for Explos. #2 = 4.57 Explosive column height for each explosive (feet): Explos. #1 = 3.49 Explos. #2 = 23.03 Total explos. column height = 26.53 Stemming height used in shot (feet)* = 6.00 Total height of Pxnlosive rolumn(s) and stemmino in the hole = 32.53 Total depth of hole denoted on the blasting report for the shot in question* = 34.00 n Analysis Completed By: Date: 0 LAND QUALITY SECTION BLASTING ANALYSIS WORKSHEET {" T denotes fields where inr)ut data is needed) Permit No.*: 92-03 Permittee*: BENCHMARK CAROLINA AGGREGATES Mine Name*: crabtree quiarry Blast Report No.*: 40 Peak Particle Velocity Check: Date of Blast*: 06/25/98 Time of Blast*: 10:59 D = Distance to closest offsite occupied structure (ft): D* = 2100.00 W = Maximum pounds of explosives per delay (pounds): W* = 120.00 SD = Scaled Distance: SD = D/WAO.5 SD = 191.70 V = Peak Particle Velocity (inches per second): V = 160 (SD)^-1.6 V = 0.04 (*max. limit in mining permit is: V = 1.0 ips) Based on known distances from the blast to the seismograph and any additional location, the expected vibration level can be estimated at the second location as follows: V = Particle velocity measured by the seismograph (ips): V* = 0.06 DS = Distance from blast to seismograph (ft): DS* = 2100.00 d = Distance from blast to second location {ft): d* = 2100.00 PPV = Theoretical peak particle velocity at the closest offsite occupied structure (ips): PPV = V(DS/d)^1.5 PPV= 0.0600 Airblast (Overpressure) Check: P = Unconfined Airblast/Overpressure (psi): P = 82 (D/W^0.33)"-1.2 P = 0.056300 To convert (psi) to (dBL): (P/2.9 x 10^-9)log x 20 P = 145.76 AB = Confined Airblast/Overpressure 080: _ AB = P (dBL) - 35 dBL (_for quarry_ situation) AB= 110.76 (*max. limit in mining permit is: AB = Ze dBL) i • Explosives Column Check: (this is a very approximate method based upon numerous assumptions; specific densities may vary greatly depending upon the type and manufacturer of the explosive products used in the shot; must consider each explosive used; refer to Dupont Handbook for actual SPD, otherwise use the following:) Assumptions (per ireco): If "straight" emulsion is used, use SPD (specific density) = 1.20 If a "blend/slurry" is used, use SPD (specific density) = 1.25 if "straight" anfo is used, use SPD (specific density) _ 0.85 Ratio between explosives: Total pounds of Explos. #1 * = 5650.00 Total pounds of Explos. #2* = 499.00 Ratio between explosives = 11.32 Average pounds of explosives used per hole (pounds)* = 120.00 Breakdown of average pounds of explosives per hole due to ratio: Explosive #1 = 109.40 Explosive #2 = 10.60 SPD = Specific densities for each explosive: SPD for Explos. #1* = 0.84 SPD for Explos. #2* = 1.25 HD = Hole Diameter Used in Shot (inches): HD* = 4.00 LD = Loading Density (pounds per foot of column): LD = SPD(.34)(HD)"2 LD for Explos. #1 = 4.57 LD for Explos. #2 = 6.80 Explosive column height for each explosive (feet): Explos. #1 = 23.94 Explos. #2 = 1.55 Total explos. column height = 25.50 Stemming height used in shot (feet)* = 6.00 Total height of explosive column(s) and stemming in the hole = 31.50 Total depth of hole denoted on the blasting report for the shot in question* = 30.00 Analysis Completed By: Date: y • i A Q -V V Benchmark Carolina Aggregates July 21, 1998 Ms. Judith Wehner NC Department of Environment and Natural Resources Land Quality Section P. O. Box 28687 Raleigh, NC 27611-7697 Re: Crabtree Quarry, Permit No. 92-03 Blasting Complaint June 11, 1999 Dear Ms. Wehner: 0 .0 E��/1 1 I am in receipt of your letter dated July 9, 1998 regarding a blast complaint that occurred on June 11, 1998. 1 am enclosing with this letter duplicate copies of information that which you have requested, including all blasts which occurred between .June 1 and June 25, 1998. I realize this is more information than you have requested, but it may be useful in determining if any trends exist. We are in the process of contacting (lie complainant to determine if there is a problem with our blasting in this area. If you have any further questions, please advise. J R l-1 Sldr E-nclosure cry truly yours, James R. =Sprinkle Area Manager P.O. Box 13983, Research Triangle Park, North Carolina 27709-3983 Sales Office: (919) 380-2630 • Telefax: (919) 380-2616 • Toll Free: 1-800-334-8094 NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DlvISION OF LAND RESOURCES July 9, 1998 „Sr _ - ---1-1- lVll. James Spilluu Benchmark Materials P.O. Box 13983 Research Triangle Park, North Carolina 27709-3983 RE: Blasting Complaint Crabtree Quarry Permit No. 92-03 Wake County Neuse River Basin Dear Mr. Sprinkle-, This office recently received a complaint directed at blasting practices conducted at the above referenced quarry. According to the complainant, Mrs. Gloria Davis, the vibrations produced from the blast at the Crabtree Quarry on June 11, 1998 caused significant vibrations of her home. As provided in the mining permit for this site, you are requested to provide to this otuce duplicate espies or all snot records related to the blasts conducted on June 11, 1998 including any seismograph records made. Furthermore, please forward all shot records for one production shot conducted immediately prior to and one production shot after these blasts for review. I suggest you discuss this matter with Mrs. Davis. Her address and telephone number are as follows: 4113 John S. Rabotau Road Raleigh, North Carolina 781-0033 LAND QUALITY SECTION (919) 733-4574 FAX (9191 733-2876 GEOLOGICAL SURVEY SECTION (919) 733-2423 FAX (919) 733-0900 P.O. BOX 27687. RALEICH. NnRrH ['ann A 2761 1-7— r ._._... _...._.......... ... ... ... .ti„-err, �.�.E (9l of iuu-u aauu F�yX li:iB/7i 5-nnOi AN EQUAL OPPORTUNITY / AFFIRMATIVE ACTION EMPLOYER - 50% RECYCLED/10'�'o'POSY-CONSUMER PAPER • • ' I 1 REPORT �pgM[E u L 2 21998 TO Mr. Dort Lineberry BENCHMARK CAROLINA AGGREGATES Post Office Box 13983 Research Triangle Park, North Carolina 27709-3983 DATE July 1, 1998 SUBJECT B!asts dated June 1, 1998 through June 25, 1998 Crabtree Quarry COPY ' NUMBER OF 2 3 • • B- E RA CH 377 Carowinds Boulevard, Suite 112, Ft. Mill, SC 29715 The Vibt ndion M«kmft ENperts 803-548-3066 FAX 803-548-3083 July 1, 1998 Mr. Kenneth Kennedy, Superintendent BENCHMARK CAROLINA AGGREGATES - Crabtree Quarry P.O. Box 52309 Raleigh, North Carolina 27612 Dear Mr. Kennedy: This report contains the seismic data from blasting associated with the Crabtree Quarry as retrieved from data sent to our office. Nine blasts, dated June 1, 1998 through June 25, 1998, are included. The maximum value of the recorded peak particle velocity for this series of blasts was 0.07 inches per second (ips), which is below the established criteria for ground vibration as recommended by the United States Bureau of Mines (RI-8507: November, 1980), Structure Response and Damage Produced by Ground Vibration From Surface Mine Blasting. This value, recorded from the blast dated June 1, 1998, represents seven (7%) percent of the allowable vibration limit as stipulated by the North Carolina Mining Act of 1971. The maximum recorded air blast level for this series of blasts was 116 decibels (dBI), or 0.00183 pounds per square inch (psi), for the blast dated June 9, 1998, which represents twenty-two (22%) percent of the 128 dBl limit stipulated by the North Carolina Department of Environment, Health, and Natural Resources. Should you have any questions or require additional information regarding the contents of this report, please do not hesitate to contact me. Respectfully submitted, VIBRA-TECH ENGINEERS, INC. ty. Terri D. Smith Area Manger r1 Charles W. Trettel A.I.P.G Regional Manager TDSJttk Enclosures cc: Mr. Don Lineberry Mr. Jim Sprinkle 377 Carowinds Blvd., Sulte 112 VIBRA-TECH ENGINEERS 0 803-548-3066 Ft. MI It, SC 29715 ART AND SEISMOGRAPHIC REPORT FAX: 803-548-30M B L A S T A T A E I S M O R A P H D A T A Client— i'1 -�06va - Job Location dA-CAd A 4 (7r-- Date Z' �_/ ��_ Blast No. Time b 4 n_...� Exact Blast Location ,R, 0- No. of Holes_ Diameter in. Avg. Depth CU - 2!y ft. Subgrade ft. Spacing O ft. Burden 2 ft. Avg. Stemming 6 ft. a s' y>I- 7 So oZ S�/ate 'SIG - 30 141tif IV - 5� Make & Type of Explosives: ZLYE lbs. B-42 lbs. 28-F Ibs. lbs. v lbs. Total Explosives lbs. Seismograph No. -� Exact Seismograph Location , 12t Seismograph.Distance & Direction from Blast Meters Peak Overpressure 101 dB Peak Particle Velocity r U ips Comments: Delay Make a ,2,67s Y-a, a �I z Delay Tye -.Zr Nos. Min. Delay Period b MS. Max. Lbs./Delay Period lbs. Blaster Weather C 5 AAA Wind Direction & Speed UZ,sw j _/ b GJ I S Everlert On ly Range/Gain Setting p Trigger Level i s Operator Cassette No. BENCHMARK CAROLINA Crabtree Quarry Seismometer at Bench 0 Blast 32 n.,te 6/Al /aA INlime: +31.n^r Instrument 7285 0.0005 Airblast = 101 dB 0.0000 -0.0005 r 0.0 0.2 0.5 0.7 0.9 1.2 1.4 1.6 1.8 2.1 2.3 0.25 Transverse = 0.05 in/sec 0.00 -0.25 1 1 1 1 1 1 1 1 1 0.0 0.2 0.5 0.7 0.9 1.2 1.4 1.6 1.8 2.1 2.3 0.25r I Vertical = 0.03 in/sec u.vu -0.25 I r r r 0.0 0.2 0.5 0.7 0.9 1.2 1.4 1.6 1.8 2.1 2.3 0.25 Longitudinai = 0.07 in/sec 0.00 -0.25 1 1 1 1 1 1 I I r 0.0 0.2 0.5 0.7 0.9 1.2 1.4 1.6 1x 2.1 2.3 0.013 Transverse 10 50 Response Spectra Vertical 1.0 0.1 0.0113 j IIO 50 vibr¢-tech enaineers 0.013 1.0 50 • J v ol'r)�f 377 Carowlnds Blvd., Sulte 112 • VIBRA-TECH ENGINEERS4 803-548-3055 Ft. Mill SC 29715 BLAST AND SEISMOGRAPHIC REPORT FAX: 803-548-3083 B L A T D A S E S M O G R A P H D A T A JobLocation . , Date e' -a :�22 Blast No. 73 — Time a Exact Blast Location Old AIM."? he%. 11,1441 D _ No. of Holes_ Diameter �' .- in. Avg. Depth it. Subgrade ft. Spacing U _ ft. Burden ft. Avg. Stemming it. oa jfH7S- 21-yo a Z/-?A j4,0S S -" p Make & Type of Explosives: Delay Make 1 w -ia 1) A-a.d lbs. Delay Type & Nos. 1Y1 S G- _ 2 7S- lbs. -7•'Z Ibs. lbs. tbs. Total Explosives lbs. Min. Delay Period a 45:" 1 ms. Max. Lbs./rD�elay Period 4 Ibs. e Blaster I ' Weather A IG Wind Direction & Speed Seismograph No. _ 7 -S Range/Gain Setting ips Evedert On ly Trigger Level Exact Seismograph Location 4fS`/d2 ZU cd elz2 f4 z i s Seismograph Distance & Direction from Blast Peak Overpressure O dB Operator Meters Peak Particle Velocity O ips Cassette No. Comments: • Seismograph Monitoring Confirmation A review of the monitoring log from the seismograph listed below confirms that a seismograph was monitoring at the time of the blast. This blast transmitted ground vibration and air overpressure levels below those required to automatically activate the seismograph. The levels were lower than the Ground Vibration Trigger Level and the Air Overpressure T,'��� _� L _f __ _ _ r rigger Level oelow. Client: BENCHMARK CAROLINA AGGREGATES Location: Crabtree Quar Event Date: June 2, 1998 Event Time: 11:22 a.m. Seismograph Serial Number: 7285 Begin Monitoring: 11:22 a.m. Ground Vibration Trigger Level: .05 i s Air Overpressure Trigger Level: 120 dBl End Monitoring: 11:22 a.m. VIBRA-TECH ENGINEERS, INC. Carolinas Office 377 Carowinds Boulevard Suite 112 Fort Mill, SC 29715 377 Carowinds Blvd., Suite 112 • VIBRA-TECH ENGINEERS • 803-548-3066 Ft. Mill, SC 29715 BLAST AND SEISMOGRAPHIC REPORT FAX: 803-548-3083 B L A S T Client Job Location.- Date l - S . A—:-' Blast No. y Time Exact Blast Location 4 a `Y No. of Holes_ r2 Diameter Z in. Avg. Depth 2 ft. Subgrade d ft. 6, Spacing _. � ft. Burden ft. Avg. Stemming ft. _t/a S a y rn a s/,c-od d r- Make & Type of Explosives: Delay Make '-fit - S-o _ 262 ,? D Alr / �_ lbs. T lbs. A lbs. I D A T A 4c.N - 3 3_ lbs. -3 lbs. plosives 41,04$ lbs. Delay Type & Nos. Min. Delay Period a S -:/-b> 0 ms. Max. Lbs.IDelay Period. Blaster Weather C Wind Direction & Speed s lbs. Everlert Only Seismograph No.. 7 i� Range/Gain Setting —� "_�1� w ips Trigger Level Exact Seismograph Location 12 rime 1 s Seismograph Distance & Direction from Blast ze�eUd Peak Overpressure Cl 3 dB Operator Meters Peak Particle Velocity 4 ips Cassette No. Comments: BENCHMARK CAROLINA Crabtree Quarry Seismometer at Bench 240 Blast 34 Date: 6/05/98 Time: 9:56 Instrument 7285 0.0005 Airblast = 93 dB 0.0000 1 1 1 1 1 f -0.0005 0.0 0.2 0.3 0.5 0.6 0,6 0.9 1.1 1.2 1.4 1.5 0.25 Transverse = 0.04 in/sec 0.00 i i i i i -0.25 0.0 0.2 0.3 0.5 0.6 0.8 0.9 1.1 1.2 1.4 1.5 0.25 Vertical = 0.04 in/sec 0.00 -0.25 0.0 0.2 0.3 0.5 0.6 0.8 0.9 1.1 1.2 1.4 1.5 0.25 Longitudinal = 0.04 in/ aec 0.00 1 1 1 1 1 --0.25 0.0 0.2 0.3 0.5 0.6 0.8 0.9 1.1 i.2 1.4 i.5 1.0 50 Response Spectra 1.0 ibra-tech en,-4- Leers 1.0 0.1 50 0.013 10 50 • e 377 Carowinds Blvd_, Sulte 112 Ft. Mlll, SC 29715 . VIBRA-TECH ENGINEERS is 803-548-3066 BLAST AND SEISMOGRAPHIC REPORT FAX: 803-548-3083 B L A T D A T A D A T A Client Job Location b nata f - 9 Gi // Blast No_ _ .. ��=�_ _._ Time Exact Blast Location _ 13, n� h o2 11 No. of Holes D Diameter in. Avg. Depth 3.2 ft. Subgrade ft. Spacing 0 Make & Type of Explosives: ft. Burden ce it. Avg. Stemming 7 / 4 r It. d /'/ 2X 7 0 - 5"v d Q-/ a G P - 3 o a N Td a' /-> 7-'z. Delay Make �ZV -" 9' ? -,?0 ZZ72} 2s-_ot -aa i ` 5 2S0 tbs. Ivy 3 x / 2 32-23- tbs. %,rLx(1�2r3 '� 4yx I t� �lr,D tbs. tbs. SU �bd 2 Ibs. Total Explosives tbs. Delay Type & Nos. Min. Delay Period '2 y U p ms. Max. Lbs./Delay Period L13z . Ibs. Blaster ZL4iFt�!-�/' JYi7�/ v�-/-- Weather_ CloecJc, Wind Direction & Speed / ,:;�i 7L L2& - Seismograph No. a Triggggert Y,- Range/Gain Setting �� o fps TriOn er Level Exact Seismograph Location 9 Ano �1�/�ri�„L i s Seismograph Distance & Direction from Blast f Peak Overpressure 114 dB Meters Peak Particle Velocity , O 3 ips Comments: i� Cassette No. BENCHMARK CAROLINA Crabtree Quarry Seismometer at Bench 210 Blast 35 Date: o/ 09/98 Time: 12:56 Instrument 7285 OA020 Airblact = 118 do o.0000 -0.0020 0.0 0.4 0.8 1.2 1.5 1.9 2.3 2.7 3.1 3.5 3.8 0.25 Transverse = 0.02 in/sec 0.00 -0.25 0.0 0.4 0.8 1.2 1.5 1.9 2.3 2.7 3.1 3.5 3.8 0.25 Vertical = 0.02 in/sec F 0.00 1 1 1 1 I 1 I I I -0.25 w,1 0.0 0.4 0.8 1.2 1.5 1.9 2.3 2.7 3.1 3.5 3.8 0.25 Longitudinal = 0.02 in/sec 0.001 1 -0.25 0.0 0.4 0.8 1.2 1.5 1.9 2.3 2.7 3.1 3.5 3.8 Transverse 10 50 Response Spectra Vertical 1.0 0.1 0.013 10 ;r, -te t 50 10 50 0 377 Carowinds Blvd., Suite 112 Ft. Mill, SC 29715 �VIBRA-TECH ENGINEERS • 803-548-3066 BLAST AND SEISMOGRAPHIC REPORT FAX: 803-548-3083 B L A T D A T A S E I S M 0 R A P H D A T A Client Job Location /,-,) /oZ Dale 4 //- !2k ~� Blast No, 176 Time f. Exact Blast Location 13- - e__ a D No. of Holes S Diameter in. Avg. Depth D "a ft. Subgrade - it. Spacing i v n. Bcrden (I _ it. Avg. oleritirning __r=. ft. 'R s/#?S So - So aS16';,f>Z> 3.0 - 30 ),qAS b - sO Make //& Type of Explosives: A61/ Tr OD I Ibs 3x/ a�l�Y Ibs Ibs lbs S '4 �,¢C a x,� — �� lbs Total Explosives Ibs Delay Make,.? oal4' s -Z d 6�2- fr -da a l a Delay Type & Nos. ___ -4 l _� Min. Delay Period La_O U ms. Max. Lbs./Delay Period Ibs. Blaster /�- weather_ e-2 L7,44 Wind Direction & Speed 1 Evedert Only Seismograph No. Range/Gain Setting i ^ /- vw ips trigger Level Exact Seismograph Location i s Seismograph Distance & Direction from Blast Peak Overpressure O Meters Peak Particle Velocity ips Comments: Cassette No. L' • Seismograph Monitoring Confirmation A review of the monitoring log from the seismograph listed below confirms that a seismograph was monitoring at the time of the blast. This blast transmitted ground vibration and air overpressure levels below those required to automatically activate the seismograph. The levels were lower than the Ground Vibration Trigger Level and the Air Overpressure r r igger revel below. Client: BENCHMARK CAROLINA AGGREGATES Location: Crabtree Quar Event Date: June 11, 1998 Event Time: 12:53 p.m. Seismograph Serial Number: 7285 Begin Monitoring: 12:53 2.m. Ground Vibration Trigger Level: .05 i s Air Over ressure Trigger Level: 120 dBl End Monitoring, 12:53 p.m. VIBRA-TECH ENGINEERS, INC. Carolinas Office 377 Carowinds Boulevard Suite 112 Fort Mill, SC 29715 BENCHMARK CAROLINA Crabtree Quarry Seismometer at Bench 30 Blast 36 Late: 6/11/98 U-ne: 12:153 Instrument 7285 0.0006 FALSE PEAK a r 1 = 1os 0.0000 -0.0006 0.0 0.8 1.6 2.4 3.2 4.0 4.8 5.6 6.3 7.1 7.9 0.25 FALSE PEAK Transverse = 0.07 in/sec 0.00 -025 I I I 0.0 0.8 1.6 2.4 3.2 4.0 4.8 5.6 6.3 7.1 7.9 0.25 FALSE_ AK Vertical = 0.13 in/sec 0.00 -0.25 0.0 0.8 1.6 2.4 3.2 4.0 4.8 5.6 6.3 7.1 7.9 0.25 FALSE PEAK Longitudinai = 0.04 in/sec 0.00 -0.25 0.0 0.8 1.6 2.4 3.2 4.0 4.8 5.6 5.3 7.1 `i.s 1.0 0.1 0.013 Transverse 10 50 Response Spectra Vertical 1.0 0.1 0.013 10 ibr _lec 50 1.0 0.1 0.013 10 50 E 377 Carowinds Blvd., Sulta 112 VIBRA-TECH ENGINEERS 803-548-3066 Ft. Mill, SC 29715 BLA AND7EISMOGRAPHIC REPORT FAX: 803-548-3083 cl ient ' 11JObLocation _ O !2 B L A T D A T A S E S M O R A P H D A T A Date - -P Blast No. Time I : S Cl 41T, Exact Blast Location_n� d ! o No. of Holes-2/ Diameter in. Avg. Depth 2 it. Subgrade ft. I r-1 / Spacing u n. Burden o _ ft. Avg. Stemmingfl. a,r/Al;Fj— 63-Sa .?S`Sav Make & Type of Explosives: I vd lbs. �'y X SSo lbs. 3�lbs. j ,CS A -fT1AP-f l 7 lbs. lbs. Total Explosives lbs. Seismograph No. , 7 a1?r Exact Seismograph Location 0 Seismograph Distance & Direction from Blast a O U Meters Peak Overpressure 1 9d'� dB Peak Particle Velocity , d S ips Comments: Delay Makedoms it _;L v y-A 7 -,z a i 7 2 -A Delay Type & Nos. g f T bD 1 `cf Min. Delay Period o� 5 - 119 o d - MS. Max. Lbs./Delay Period 3 lbs. Blaster Weather Wind Direction & Speed S[� Everiert On Range/Gain Setting Z — Ni Ips Trigger Lavel � l-� i 5 Operator � Jc' airL Cassette No. BENCHMARK CAROLINA Crabtree Quarry Seismometer at Bench 210 Blast 37 Date: 6/ 1o/98 llYne: 10.11.7 Instrument 7285 0.0008 Airblast = 108 dB 0.0000 -0.0008 0.0 0.3 0.6 0.8 1.1 1.4 1.7 2.0 2.3 2.5 2.8 0.25 Transverse = 0.02 in/sec 0.00� I I ( I 1 1 1 1 -0.25 0.0 0.3 0.6 0.8 Li 1.4 1.7 2.0 2.3 2.5 2.8 0.25 r Vertical = 0.02 in/sec 0,00 0.0 0.3 0.6 0.8 1.1 1.4 1.7 2.0 2.3 2.5 2.8 0.25 Longitudinal = 0,05 in/sec 0.00-- 1 I I I I I I 1 1 -0.25 0.0 0.3 0.6 0.8 L 1 1.4 1.7 2.0 2.3 2.5 2.8 0.013 Transverse Lo 50 Response Spectra Vertical 1.0 0.1 0.013 1.0 ob,r _iec i-e--c 50 0.013 1.0 50 • • 377 Carowlnds Blvd., Suite 112 FL Mill, SC 29715 AST V[BRA-TECH ENGINEERS • 803-548-3066 AND SEISMOGRAPHIC REPORT FAX: 803-548-3083 B L A T D A T A S E S M O G R A P H D A T A Client Job Location rnatP 1, I � Blast No. Time p Exact Blast Location „),2aUr � / y No. of HolesS/= lL Diameter !Y in. Avg. Depth 213 �/ ft. Subgrade 3 ft. Spacing ft. Barden ft. Av .Stemming tt. a2-�/N�r N Sa L5/,6va FS1-.?v ,gars �v- Make & Type of Explosives: ��S D lbs. 330 lbs. 3lbs. Z, 3 lbs. lbs. Total Explosives lbs. Seismograph No. Exact Seismograph Location t� Seismograph Distance & Direction from Blast f Peak Overpressure / O , d6 Meters I Peak Particle Velocity " U 44 ips Comments: Delay Maakeca�l1J�a_2 4Q._ ire -��v &2 ion s Delay Type & Nos 3 -� Min. Delay Period, 'a S - /,4-4 D ms. Max. Lbs./Delay Period / lbs. Blaster E, =,r ac ZzC 4Ofii 2" 1 U/1 e Weather. Wind Direction & Speed Evedert Only Range/Gain Setting! ^�e-w ips Trigger Level �/��Q/7✓ i s a,[vo (. Operator �- Cassette No. BENCHMARK CAROLINA Crabtree Quarry Seismometer at Bench 210 Blast 38 Date; 6/19/98 Time: 13:04 Instrument 7285 0.0007 r Airblast = 107 dB 0.0000 titi✓ -0.0007 0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.6 2.8 3.1 0.25 Transverse = 0.04 in/sec 0.00 f - n ✓� r -0.25 0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.5 2.8 3.1 0.25 r - Vertical = 0.03 in/sec - O.UU I 1 I I I I I -0.25 0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1- 2-5 2.8 3.1 0.25 Longitudinal = 0.03 in/sec - - - 0.00 rr-- 1 1 I I I I I -0.25 0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.5 2.8 3.1 0.013� Transverse 1.0 50 0 Response Spectra Vertical vibra-tech enaineers -13 1.0 50 • 377 Carowlnds Blvd., Suite 112 Ft. Mill, SC 29715 AISVBRA-TECH ENGINEERS a 803-548-3066 TAIND SEISMOGRAPHIC REPORT FAX: 803-548-3083 B L A S T D T A S E S M O R A P H D A T A Client / Job Location C' �' Date Blast No. `?� Time Exact Blast Location d No. of Holes _ q L4 Diameter �1 - in. Avg. Depth 7q ft. Subgrade ft. Spacing ft. Burden ft. Avg. Stemming 4�1 ft. .t S/,y 3, -Sv .4 jymf Make & Type of Explosives: Delay MakeA s4 9a 42 9 o a -A v /? .2-.2a -2 s 3-aa A y-A";, a� lbs. Delay Type & Nos. - _ 41,V7-4) l —R _ �/// �c� lbs. Min. Delay Period U v U ms. X Z4, _ vt lbs. Max. Lbs./Delay Period 420 lbs. 412 _ lbs. Blaster/1s�c�/c�c �0'gn,FI lbs. Weather Total Explosives lbs. Wind Direction & Speed Evedert On Seismograph No. _ 7 02 Range/Gain Setting fps Trigger Level Exact Seismograph Location 0e-- ,�y - i s Seismograph Distance & Direction from Blast 491626 Peak Overpressure 9 '? dB Operator �/�/� y .� .0 z Meters � Peak Particle Velocity O `ar ips Cassette No. Comments: BENCHMARK CAROLINA Crabtree Quarry Seismometer at Bench 240 Blast 39 Date: g/ 23/98 Time: 1 1:06 Instrument 7285 0.0005 r Airblast = 93 dB 0.0000 I 1 I 1 I I -0.0005 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0.25 Transverse = 0.04 in/sec 0.00 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0.25 r Vertical = 0.02 in/sec U.UU I I 1 I I f I I -0.25 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0.25 1.^ng",tudina1 -0 03 ." "Ise c 0.00 -025 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.Y 1.0 1.8 2.1 1.0 0.1 O.O L3 Transverse 10 50 Response Spectra Vertical 1.0 0.1 0.013 10 vibra-tech engineers 50 1.0 50 L • 377 Carowlnds Blvd., Suite 112 Ft. Mill, SC 29715 B9VIBRA-TECH ENGINEERS • 803-548-3066 ST AND SEISMOGRAPHIC REPORT . FAX: 803-548-3083 B L A S T D A T A S E I S M O G R P H D A T A Client 74W N Job Location 6'1 -2- CA9JJ i45-- c Date 6 _ � s~` �1 ffr��iJ Blast No. ��� Time _ % S�9 '4 A, Exact Blast Location_,.!�1�<� �+ No. of Holes -- Diameter in. Avg. Depth 2z ft. Subgrade - -- ft. Spacing) ft. Burden ft. Avg. Stemming ft. .t SIAI > J- H %- Sr .t S Sd0 .5;X - 3D /*/Hs S - yo Make & T pe of Explosives: Delay Make �l / d.- 6 lbs. Delay Type & Nos. , z1 lbs. �/30 lbs. lbs. 2 lbs. Total Explosives lbs. Seismograph No. 7 a P Exact Seismograph Location Seismograph Distance & Direction from Blast ;� / P r Peak Overpressure % dB Meters 1 Peak Particle Velocity ips Comments: Min. Delay Period o2 -5+` /0 6 6 ms. Max. Lbs./Delay Period 1-2 Z� _ lbs. Blaster ,c, r- 1/ C Weather Wind Direction & Speed LErverlert OnlyRan/ge/Gain Setting — u e 1pSgger Level r 4 a Xn L! - -- i s Operator __ A $�°iP,� IAsc-ney� Cassette No. BENCHMARK CAROLINA Crabtree Quarry Seismometer at Bench 210 Blast 40 Date: R /9510A Tim.• 1 0:50 Instrument 7285 0.0005 r Airblast = 93 dB 0.0000 I r 1 I -0.0005 0.0 0.2 0.4 0.5 0.7 0.9 1.1 1.3 1.4 1.6 1.6 0.25 Transverse = 0.04 in/sec 0.00- 1 1 1 I I I I I I -0.25 0.0 0.2 0.4 0.5 0.7 0.9 1.1 1.3 1.4 1.6 1.8 0.25 Vertical = 0.03 in/sec 0.00� - -- - - - - - - - -0-25 ^ 0.0 0.2 0.4 0.5 0.7 0.9 1.1 1.3 1.4 1.6 1.8 0.25 Longitudinal = 0.06 in/sec 0.00 r -0.25 0.0 0.2 0.4 0.5 0.7 0.9 1.1 1.3 1.4 1.6 1.8 Transverse 1.0 50 0.013 Response Spectra 10 vibra,-tech engineers to 50 e JAMES B. HUNTJR.'?•,;�' :"GOYERNOR ,i;WAYNE MCDEVrrT.� M3� !?G RE. DIRECYOR AND STATE GEOI_OC . . .,I.,_ w •+F 5 �~.r NORTH CAROVNA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF LAND RESOURCES July 9, 1998 Mr. James Sprinkle Benchmark Materials P.O. Box 13983 Research Triangle Park, North Carolina 27709-3983 RE: Blasting Complaint Crabtree Quarry Permit No, 92-03 Wake County Neuse River Basin Dear Mr. Sprinkle: This office recently received a complaint directed at blasting practices conducted at the above referenced quarry. According to the complainant. Mrs. Gloria Davis, the vibrations produced from the blast at the Crabtree Quarry on June 11. I998 caused significant vibrations of her home. As provided in the mining permit for this site. you are requested to provide to thic nff-l-r.e diintiratP rnniec of all shot records related to the blasts conducted on June 11, 1998 including any seismograph records made. Furthermore, please forward all shot records for one production shot conducted immediately prior to and one production shot after these blasts for review. I suggest you discuss this matter with Mrs. Davis. Her address and telephone number are as follows: 4113 John S, Rabotau Road Raleigh, North Carolina 78 1 -0033 LAND QUALITY SECTION (919) 733-4574 FAX (91 9) 733.2876 GEOLOGICAL SURVEY SECTION 191 9) 733-2423 FAX f919) 733-0900 P.O. BOX 27657. RALEIGH, NORTH CAROLINA 2761 1 -7687 TELEPHONE (919) 733-3833 FAX (919) 71 5.8801 AN EQUAL OPPORTUNITY / AFFIRMATIVE ACTION EMPLOYER - SO% RECYCLED/1 Oq POST -CONSUMER PAPER 0 • Mr. Sprinkle Page Two I look forward to receiving the requested information in the near future. Your continued cooperation will be appreciated. Sincerely, qu�dith A. Wehner Assistant State Mining Specialist Land Quality Section JW cc: John Flolley, P.E. Mrs, Gloria Davis. complainant Author: Tracy Davis at NROLROIP Date: 6/19/98 1:03 PM Priority: Normal TO: "John L. Holley" <jholley@rro.enr.state.nc.us> at Internet TO: Judy Wehner CC: Tony Sample CC: Jim Simons CC: Mell Nevils Subject: Re: Benchmark Quarry, Duraleigh Rd. ------------------------------------ Message Contents ------------------_-_--------------- Judy, please request blast records from the company and let's analyze to determine compliance at the closest offsite structure & what Mrs. Davis' theoretical readings are for the blast in question. John, as far as monitoring at this site, we'll have to put in on the list. Currently, we are alternating both our seismographs at a complainant's house adjacent to a quarry in Lenoir (the complainant has filed a contested case against us for issuance of a recent modification). Next on the list is a complainant near a dimension stone quarry...Charles promised Representative Weatherly that we would monitor at this location next. After these are addressed, we will let you know when we can move to this site. In the meantime, be sure to remind us so this doesn't get forgotten. Thanks! TD Subject: Benchmark Quarry, Author: "John L. Holley" Date: 6/19/98 12:49 PM Reply Separator Duraleigh Rd. <jholley@rro.enr.state.nc.us> at Internet Yesterday I spoke with Mrs. Gloria Davis (4113 John S. Rabotau Rd., Raleigh, 781-0033) regarding her concerns with blasting at the subject mine site. She lives in Olde Raleigh (which is a significant distance away from the quarry). She reports that they built about 8 years ago and have always experienced significant vibrations relative to the blasts at this site during the work week. In particular, she experienced a significant event last Thursday, June 11, just after 1PM. I asked her to continue noting significant events, including time, weather conditions, etc., and indicated that I would discuss follow-up on her complaint with you. I suppose we could go with the above report and request data from Benckmark for analysis; however, I wonder if this would be a good candidate for monitoring with our seismograph in light of the reported long history. What do you think? s shalNecessary"strvict' t be constructed or installed when required to prevent such conditions. 8. Blasting �k The operator shall provide to the Department a copy of the findings of any seismic studies conducted at this facility. The operator shall make every reasonable effort to incorporate the studies' recommendations into the production blasting program. The following blasting conditions shall be observed by the operator to prevent hazard to persons and adjacent property from thrown rock or vibrations: A. In all blasting operations, except as hereinafter otherwise provided, the maximum peak particle velocity of any F JE .3 . tJ1 Cs h"1 l In i- "x���d � inch rer ioiipviieii+., vx groui�u iii���ilii aziu�� av� second at the immediate location of any building outside of the permitted area regularly occupied by human beings such as dwelling house, church, school, public.,building, or commercial or institutional building_ outside of the permitted area. The --operator shall monitor each blast with a seismograph. B. Airblast overpressure shall not exceed 128 decibels linear (DBL) as measured at the immediate location of any regularly occupied building outside of the permitted area such as any dwelling house, church, school, public building, or commercial or institutional building. If vibration/airblast limits are exceeded, the operator shall immediately report the. -event with causes and corrective actions to the Department. Use of explosives at the blast site that produced the excessive reading shall cease until corrective actions approved by the Department have been taken. However, blasting may occur in other approved areas within the permitted boundary. Authorization to blast at the blast site may be granted at the time of the verbal reporting of the high airblast reading if the circumstances justify verbal approval.. Failure to report will constitute a permit violation. C. The operator shall take all reasonable precautions to insure that flyrock is not thrown beyond areas where the access is temporarily or permanently guarded by the operator. Should flyrock occur beyond the permitted and guarded area, or the level in Item A. above is exceeded, the operator shall report the incident to the Department immediately and further use of explosive at the site shall be immediately suspended until the following actions have been taken: 0 incident_• shall ' be conducted . • - S .. Nam'. 2."F yA''satisfactory report detailing the investigation shall be provided to the Department, within 10 days of the incident. Said report shall, at a minimum, document the cause(s) of the incident along with technical and management actions that will be taken to prevent further incidents. The report shall meet with the approval of the Department before blasting may resume at the site. Failure to take corrective measures to prevent flyrock and repeated instances of flyrock shall be considered a violation of this permit. D. The operator shall maintain records on each individual blast describing: the total number of holes; pattern of holes and delay of intervals; depth and size of holes; type and total pounds of explosives; maximum pounds per delay interval; amount of stemming and,burden for each hole; blast location; distance from blast to'closest off -site occupied structure; and weather conditions at the time of the blast. Records shall be maintained at the permittee's mine office and copies shall be provided to the Department upon request. E. The operator shall, when requested by the Department, give 24 hour advance notice to the Land Quality Section prior to any blast during a period for which notice is requested. High Wall Barrier A physical barrier consisting of large boulders placed end -to -end (a minimum of four (4) feet high) or concrete barriers or fencing, both as specified in the Crabtree Quarry Permit Renewal Drawings dated January 1992 and revised April 1992, shall be maintained at all times around the perimeter of any highwall to prevent inadvertent public access. In addition, a minimum 25 foot wide horizontal safety bench shall be provided at the junction between the top of rock and the toe of any overburden cut slope. 1.0, visual Screening A. Existing vegetation shall be maintained between the mine and public thoroughfares to screen the operation from the public. Additional screening methods, such as constructing earthen berms, shall be employed as deemed appropriate by the Department. Auqust 29, 2000 goo? t C Dnb ■■■ ■■■Hanson Ms. Judith Wehner North Carolina Department of Environment and Natural Resources Land Quality Section P. O. Box 27687 Raleigh, North Carolina 27611-7687 Re: Blast Compaint — Crabtree Quarry Permit No. 92-03 Wake County Dear Ms. Wehner: Hanson Aggregates East Southeast Region P.O. Box 13983 Research Triangle Park, North Carolina 27709.3983 Tel 919 380 2610 Fax. 919 RRn 2616 I apologize for the lateness in responding back to you regarding a blast complaint which occurred on July 13, 2000 at our Crabtree Quarry. Please find attached blast results for the shot which caused the complaint and the shot that occurred on Julv 10, 2000 and also the subsequent shot on July 18, 2000. For your information, I'm also enclosing a -sum mmary_repoit--from--Vibra Tech' Engineers which shows the results�of_three_seismognaph=readings=for=each shot? You may be unaware_ but we have installpd'-twn` n rmanent SPi�mnnranh lorntinns in the vicinity of the quarry and also continue to use a portable seismograph in various locations during blasting. Althni inh it is gnnarant that tha hin z- inn race iltc Winra wall within etata ni iiAnlinac the complaint mayrh-ave_been--generated -by- cloud =cover_or_-an-inv_ersion'P In any event, the quarry did contact the complainant to determine the nature of the complaint. We will continue to monitor all blasts at Crabtree Quarry;using threew. Cseismographs arrayed -in -the vicinity of_the7quarry. If you require any further information, please do not hesitate to call. ery truly yo rs, James . H. Sprinkle Area Operations Manager Cc: Nigel Wills VIRRATF-CH®_�.. The Vibration Monitoring Experts July 26, 2000 Mr. Jim Sprinkle HANSON AGGREGATES EAST P.O. Box 13983 Research Triangle Park, North Carolina 27709-3983 Re: Crabtree Quarry Dear Mr. Sprinkle: 377 Carnwind -s Boulevard, Suite. 117, Ft, Mill, SC 74708 803-548-3066 FAX 803-548-3083 As requested, we are enclosing a mid -month seismic report for the Crabtree Quarry. The report includes the first three blasts for July, 2000. It is my understanding that the quarry received a complaint on July 18, 2000. The cellular remote seismograph, located near the subdivision on Oak Park Road, recorded an air blast of 1I22%decibels for the blast on July 18, 2000. The peak particle velocity for this blast was 0.030 inches per second. The complaint was probably due to the air blast and not the ground vibration. As you know, this shot is not in violation of the permit, but may have been loud enoughto generate thle complaint. I would like to take this opportunity to let you know that the personnel at the Crabtree Quarry keep outstanding blast records which they consistently mail to us in a timely fashion. It is always a pleasure to work with Carey Davis and Ken Kennedy. Matt Pilz, Regional Manager for ViBRA-TECH, INC., and I will be in the Raleigh area within the next month and would like to stop by and see you. i will contact you as we firm up these plans. If I can be of further service in this matter, please do not hesitate to contact me as soon as possible. Sincerely, VIBRA-TECH, INC. 0 J44AZI ALU-�� Terri Harper Area Manager THlmh Enc. 0 F-I �VIBRATECH' The Vibration Monitoring Experts July 24, 2000 Mr. Kenneth Kennedy, Superintendent HANSON AGGREGATES EAST -- Crabtree Quarry P.O. Box 52309 Raleigh, North Carolina 27612 Dear Mr, Kennedy: 377 Carowinds Boulevard, Suite 112, Ft. Mill, SC 29708 803-548-3066 FAX 803-548-3083 This report contains the seismic data from blasting associated with the Crabtree Quarry as retrieved from data sent to our office and the seismic activity detected by the continuous recording seismographs located at 3904 Oak Park Road and 5501 Duraleigh Road. Three blasts dated July 1 through July 18, 2000, are included. The maximum value of the recorded peak particle velocity for this series of blasts wast0=070=inches per second (ips), which is below the established criteria for ground vibration as recommended by the United States Bureau of Mines (RI-8507: November, 1980), Structure Response and Damage Produced by Ground Vibration From Surface Mine Blasting. This value, recorded from the blasts dated July 13 and July 18, 2000, represents seven percent (7%) of the allowable vibration limit as stipulated by the North Carolina Mining Act of 1971. • The maximum recorded air blast level for this series of blasts was'e1,22=deci6els (dBI), or 0.00365 pounds per square inch (psi), for the blast dated July 18, 2000, which represents twenty-eight percent (28%) of the 133 dBl criteria for seismographs possessing 2 Hertz (Hz), high-pass acoustic response capabilities, as stated in the United States Bureau of Mines (RI-8485, 1980), Structure Response and Damage Produced by Airblast From Surface Mining. Should you have any questions or require additional information regarding the contents of this report, please do not hesitate to contact me. Respectfully submitted, VIBRA-TECH, INCp Terri Harper Area Manager /7116,�,�IZtom �, n Matthew J.J. Pilz v Regional Manager THlmh Enclosures 411 cc: Mr. Jim Sprinkle %1lMDA_TCr'W entr EVENT SUMMARY V ILJ1%J% 11...VI 11 11-v. HANSON AGGREGATES EAST CRABTREE QUARRY Raleigh, North Carolina JULY 1 through JULY 18, 2000 Page 1 of I HIGHEST £VENT O_ TO PODREADING SEISMO SEISMOGRAPH, DISTANCE . VERTICAL :f- LONG. TRIG.:LEVEL >" FRODT PPV FRO; PPV 046 07/10/00 11:17 NIA 7274 Weaver 8. Kilkenny 1,500 119 0.00258 Ohs ?D4U 19 0.030 20 0 1, 88 0,0550 N:A 046 07/10/00 11:22 NIA 3354 3904 Oak Park Rd N/A 116 0.00183 0.013 43� a0!020 39 0.015 43 0.020 N/A 046 07/10/00 1121 N/A 3197 5501 Duraleigh Rd N/A 117 0.00205 0.033 85 0,053 57 0.038 47 0.030 NIA 047 0 0711310 12:55 NIA 7274 Weaver & Dundee 500' 11n 0.00092 ss01040i fill 3 0 OWN-tzy 0.020 301 A0.0 07 1 34 0.050 NIA 047 07/13/00 13:00 NIA 3354 3904 Oak Park Rd N/A 117 0.00205 0.025 28 0.015_ 21 N025$ 23 0.020 NIA 047 07/13/00 1259 NIA 3197 5501 Duraleigh Rd NIA 117 0.00205 0.028 21 0 � 57 . 0 035 64 0.030 NIA 048 07/18/00 13:06 N/A 7274 Weaver 8 Kilkenny 1,500' 114 000145 0.030� `3'0 0.040 35 g,01070 50 0.050 NIA # 048 07/18/60 13:10 NIA 3354 3904 Oak Park Rd NIA 122 0.00365 i0:u3u� 43,� 0.020 57 OA15 »' 0.020 N!P. 048 07118/00 13:09 N/A 3197 5501 Duraleigh Rd N/A 114 0.00145 0.040 24 055> >100 OA48 64 0.030 NIA I �0 GREATEST PEAK PARTICLE VELOCITY (ips) READING FOR THE MONTH # GREATEST PEAK OVERPRESSURE (dB!) READING FOR THE MONTH — SEISMIC ACTIVITY NOT SUFFICIENT TO TRIGGER SEISMOGRAPH INSTALLED 377 Carow'rnds Blvd., Sulte 112 VIBRA•TECH ENGINEERS 803-548-3066 Ft.-Mlll, SC 29715 BLAST AND SEISMOGRAPHIC REPORT FAX: 803-548-3083 Clieyit Job Location Z) /,Z K"7� Date -2 ` Blast No. 1 v Time B L A S T D A T A S E S M 0 R A P H D A T A Exact Blast Location No. of Holes J s74/ Diameter Spacing 1/ ft. F �a+ ! In. Avg. DepthL �_Y� �' tft. Subgrrade ft. Burden C% _ ft. Avg. Stemming'G ft. Make & Type of Explosives: Delay Make In 5 O0?t lbs. Delay Type & Nos. _ -s�� /Z.�-gyp �ri�L.r'f 6;lbs. Min, Delay Period _ a S f a _ ms. lbs. Max. Lbs./Delay Period WIV, , lbs. ��DOSTc �XR r a lbs. Blaster lbs. Weather Total Explosives Seismograph No. a_Z Exact Seismograph Location Ibs. Wind Direction & Speed S jy / y Seismograph Distance & Direction from Blast Peak Overpressure ��''�'- dB Meters ��"-`"� �►,. Peak Particle Velocity ' 'D� ips J Comments: Everlert On! Range/Gain Setting ips Trigger Level t l,I �Yi I .lrrl)1lti � .. i s Operator Cassette No. • HAN5VN %P►IyC�KtU I tj C/Hj I CRABTREE QUARRY P,O. BOX 52039 • RALEIGH, INC 27612 BLAST REPORT Project- Zs�� Location: r,,/CA/ 150 Joe Date: 7- Shot No, Seis. No._ 7c,) 7 1/ Time Fired //"/%f,)/;1 Scale Distance % 7-N Particle Velocity 7 , o V L r , 66 Dist. To Neighbor �/��JD ' Max. Lbs.IDefiay Type Rock GRANiTF_ 7. Sub -drilling 12 2 Type D01_ yD, 8. Height of Bench 93-351A . Z'5- VC, 3 Bit Size `' y. Stemming No. Holes - Q�1.1.� - T 10. Burden 5 Total Drill Ft. 12 X ti 11. Spacing o Drill Hours ,2 2, Open or Buffer EXPLOSIVES CAPS Type Pounds Delay/No./Ft. DelayJNo.IFt, o- ` A)Fi 3 b-aa �1?S-�sv �9 441� 4s �q , TPk) , nS- 17 Z /Ze TW' Z�cg ir/ 2 S mS-as S - �2 ? Total Pounds ��9a Total Tons or CY Powaer Factor BA.CKBREAK FRAGMENTATION ZD-Fair-Poor NOISE Loud- era Quiet t:linor<EDSevere WEATHER DATA t Inversion below 5,000 ff. (AGL) Base Top of� 2 Temperature to wipe out inverson �l q,3n 3 Expected High 4 Temperature at time of shot - 5 NJinds. Surface 5 k) 1 14 5,000 ft. w6 �% ! 2,000 ft. 5 �,J 1 1-7 10,000 ft. G�J 1 c3S Blaster: ForemaT Superintendent: -A-) { 41 Anyl MUTT 7 -77 7 APT jER ms -Ag Mop Sol Ze Ful LITT� I -�' T ERE i L i4 4 - I lh' R H-1 WIN F11 din HT I I F�f i U- too; J hill UP 4'[Hwl"Alr mail LLI. most "solid 111a may pump INS Am i1ii I 7111 . ........... i:s I 07/20/2000 10:01 15704550626 VisRA -TECH Event Report I:. Vlkntion M.oia,:.. IY►pv PAGE 02 Danimo ' Vert at 11:22:17 July 10, 2000 Serial Number 3354 V 2.5 MuIbSeis V Trigger Source Geo: 0,0200 in/s Battery Level 7.0 Volts Range Geo :5,00 in/s GAllbration March 16, 2000 by VIBRA-TECH Record TIm* 4.0 sea at 1024 sps File Name E354830V.1-51 Notts LocatlW CRABTREE QUARRY, RALEIDH,NC, Cl?vr+t HANSON AGGREGATES EAST User Name: MBRA-TECHICONT.CELLULAR RECORDER Converted- July 10, 2000 16:63,01 (V4.02) Ended Notes RECORDING LOCATION: SET UP ON GROUND APPROX,100 FE ET WEST OFTHE RES. AT 3904 OAKPARK ROAD, RALEIGH. NO ATH CAROLINA. Post Event Notes n I Microphone L•ine_ar_Weighting PSPL1,t6,dB(k) at 1.485 Sec ZO Froq 5.0 Hz Channel Test Passed (Fraq = 20.0 Hz Amp = 481 mv) Tran Vert Long PPV 0.0125 0' 20 0.0150 INS ZC Freq _00r �43��-39:; �_4_3—Hz T1me (Rai. to Trig) 0.003 4;Q0D-�0.1(2�se0 Peak Acceleration 0.0133 0,0133 0.0133 g Peak Displacement O,OC404 0.00006 0.00005 In Dynamic Geo Cal. Passed Passed Passed Peak Vector Sum 0.0215 1n/s at 0.000 sec I- z MILL ir7120L ' U7—�„r rr--mrCmoa �- f�nl.. � �r "4 j_ IYY �nr U$SM R18907 And QSMRE n _ No velocity above 0.04 inla i I L. 01 ' I a.oa� 1 II 6 10 Zn 50 100 y Frequency (Ha) Tram + Vert: x Long: o Long Vert- T � 2.0 3.0 Time Scale: 0.20 3oc)dIv Amplitude Scale: Geo: 0.0200 in/g/div Mic: 0.00050 pai(L)/dlV Trigger ■ 111— — -4 Printed: July 10, 2000 ly 4.02.4,021 Format Copyrlghud 1HO-1 619 0.0 •-nr- .......... I 4.0 0.0 0,0 0.0 07/20/2000 10:01 15704550626 Vmaa .TF,cH T1V Lad., brnloriy E�rta DatalT!,ne Vert at 11:21:26 July 10, 2000 Trigger source Geo: 0 0300 role Range Geo '.5.00 inls Record Time 4.0 sac 8t 1024 9pS Event Report 0 Serial Number 3197 V 2.5 MuIOSeis V Battery Level 6.9 VvltS Calibration March 18, 2000 by VIBRA-TECH File Name E19783OV.JP1 Notes Location•. CRABTREE ©UARRY.RALEIOH,NC. Cllenk HANSON AGGREGATES CO. User Name; VIBRA-TECH/CONT,CELLUL-AR RECORDER Converted: Jufy 10, 2000 16:52:44 (4.02) Extended Notes Post EVAtIt Notes w Microphone Linear Weighting Z PSPL •1.1s74fdB(L) at 0.541 sac ZC Freq 2.0 Hi Channel Test Passed (Freq = 20.0 Hz Amp = 575 mv) Tran Vert Long PPV 0,0325 0'052_5901 0.0375 inls ZC Freq "5ha—_jR57 47--QhHz !'ms i0el. to Ttin) 0.35-A 0.174 v.1'—A Peak Acceleration 0.0464 0.0729 0.0398 g Peak Mplacoment 0.00012 0,00014 000012 in Dynamic Goo Cal. Passed Passed Passed Peak Vector gum 0.0588 inls at 0.185 sec Micl- Long `} I I Vert I I Tran >i USBM R18607 And OSMRE PAGE 03 t 6-� 1 Frequency (Hz) Tran: + Vert: x Long: o 4.0 Tlme Scale; 0.20 secJdiv Amplitude ScOW Goo: 0.0200 InJSIdiv Mlc: 0.00050 psl(L)/div Trigger = ►— — --4 a-:...,,. ,—.. n ,nnn Oki A nl'- a rrn Format CoovrtuhUd 1990.1909 0.0 1 I 0,0 I • 377 Carowlnds Blvd., Sulte 112 VIBRA-TECH ENGINEERS Ft. MITI, SC 29715 A! AST AND SEISMOGRAPHIC REPORT B L A T D A T A S E S M 0 R A P H D A T A 803.548-3066 FAX. 803=541T30V.'1j Client h -- -- _ Job Location Date _-? " 12 " U 12 __- Blast No. _ 'Y- -)-- Time Exact Blast Location ti G h 1 to No. of Holes J`d Diameter —L in. Avg. Depth 3� " �S ft. Subgrade 3 ft. 111 Spacing _ 1 ft. Burden ft. Avg. Stemmin ` 9 ft. ,gyp �S y-915-q ,7 Make & Type of Explosive Delay Ma a 44A a 1 1 y 0 -1-2 h __ L� lbs. Delay Type & Nos. d `OD VD 14,4 94!57 lbs. Min. Delay Period -oZ %Q UU _ ms. lbs. lbs lbs Total Explosives lbs. Max. Lbs.IDelay Period —. 0 7 - lbs. n1—_j I�iaster Weather.—_ Wind Direction & Speed Evarleri Only Seismograph Na. Range/Gain Setting vv�/ ips Trigger Level Exact Seismograph Location Y1 i s Seismograph Distance & Direction from Blast Meters Peak Overpressure , 1 1 0 �T dB Peak Particle Velocity ► D 7 ips Comments: Operator Cassette No. !C�1l�!�► rr..� 1�r�.1�F.1! � tm� 1WFIR� ■ ■■■■ems■■. NONE ONE . NOON .■■ ��■��IEEI_I■EOEi/I_QE■■■E■.ME.. NEON■■ ■.■ f�ri.EE�lE■.N�■�■E�11■EMOE.O■ .. No .. MEN SIN FA■■.■■.E ■ NOON■■WrJYMAN .■ kFgAIL ■■■ ■�.e :.�E���■���a■■Nfs■■ENE.■ ■ .■.■ ■■■. EN...a■■�■■�■, er■`■■EE■■E■■■■N ■■e.i■ ■. ■■.■.■ ■ .......,�, .0.I. R■■.....■..... ■ a.. .....� o� .MINE ■■m■■.■■... MEN .. ■.■■■■■■■■■■■■■ ■ ONE■. ■■■..!!�!■■!�12'E■ � " ■ .■...■.■■ . ■■N■■.E■ .■■E�i■i ■ SEE■ MOM OE.■..■■..■ E ■■E■■■■E.■NNE* ME ■ MEN E■■ ■■■■■■■ n0 i i■ Immommol■■iiE . i Drawing will show following: (1) Square or staggered pattern. (2) Hole layout (3) Timing (4) North Direction (5) Any unusual conditions (6) Avg. burden front line (7) Open face (8) Location of any angled holes (9) Bore holes can be used to show typical front line or wet hole and typical dry hole showing stemming & primer location. rr 1I • LAND QUALITY SECTION BLASTING ANALYSIS WORKSHEET (* denotes fields where innut data is needed) Permit No.*: 92-03 Permittee*: HANSON AGGREGATES Mine Name*: CRABTREE QUARRY Blast Report No.*: 46 Peak Particle Velocity Check: Date of Blast*: 07/10/00 Time of Blast*: 11:17 D = Distance to closest offsite occupied structure (ft): D* = 1500.00 W = Maximum pounds of explosives per delay (pounds): W* = 141.00 SD = Scaled Distance: SD = DNV10.5 SD = 126.32 V = Peak Particle Velocity (inches per second): V = 160 (SD)A-1.6 V = f 0 7 (*max. limit in mining permit is: V = 1.0 ips) ((�1 Based on known distances from the blast to the seismograph and any additional location, the expected vibration level ran be estimated at the second location as follows: V = Particle velocity measured by the seismograph (ips): V* = 0.08 DS = Distance from blast to seismograph (ft): DS* = 1500.00 d = Distance from blast to second location (ft): d* = 1500.00 PPV = Theoretical peak particle velocity at the closest offsite occupied structure (ips): PPV = V(DS/d)"1.5 PPV= 0.0600 Airblast (Overpressure) Check: P = Unconfined Airblast/Overpressure (psi): P = 82 (DNV^0.33)"-1.2 P = 0.089866 To convert (psi) to (dBL): (P12.9 x 104-9)log x 20 P = 149.82 R ^" r AB = Confined Airblast/Overpressure (dBL): AB = P (dBL) - 35 dBL (for quarry situation) AB= r� 14.825 (*max. limit in mining permit is: AB - . �a� dBL) ....-,�..:�:u.- .a=:��• 0 • Explosives Column Check: (this is a very approximate method based upon numerous assumptions; specific densities may vary greatly depending upon the type and manufacturer of the explosive products used in the shot; must consider each explosive used; refer to Dupont Handbook for actual SPD, otherwise use the following:) Assumptions (per Ireco): If "straight" emulsion is used, use SPD (specific density) = 1.20 If a "blend/slurry" is used, use SPD (specific density) = 1.25 If "straight" anfo is used, use SPD (specific density) = 0.85 Ratio between explosives: Total pounds of Explos. #1 * 5800.00 Total hounds of Exr)los. #2* = 600.00 Ratio between explosives = 9.67 Average pounds of explosives used per hole (pounds)* = 138.00 Breakdown of average pounds of explosives per hole due to ratio: Explosive #1 = 123.72 Explosive #2 = 14.28 SPD = Specific densities for each explosive: SPD for Explos. #1 * = 0.85 SPD for Explos. #2* = 125.00 HD = Hole Diameter Used in Shot (inches): HD* = 4.00 LD = Loading Density (pounds per foot of column): LD = SPD(.34)(HD)12 LD for Explos. #1 = 4.62 LD for Explos. #2 = 680.00 Explosive column height for each explosive (feet): Explos. #1 = 26.76 Explos. #2 = 0.02 Total explos. column height = 26.78 Stemming height used in shot (feet)* = 10.00 Total height of explosive column(s) and stemming in the hole = �3r78, Total depth of hole denoted on the blasting report for the shot in question* = �3�00O Analysis Completed By: Date: 0 0 LAND QUALITY SECTION BLASTING ANALYSIS WORKSHEET (* = denotes fields where input data is needed) Permit No.*: 92-03 Permittee*: HANSON AGGREGATES Mine Name*: CRABTREE QUARRY Blast Report No.*: 47 Peak Particle Velocity Check: Date of Blast*: 07/13/00 Time of Blast`: 12:55 D = Distance to closest offsite occupied structure (ft): D* = 1500.00 W T Maximum pounds of explosives per delay (pounds): W* = 287.00 SD = Scaled Distance: SD = DNV"0.5 SD = 88.54 V = Peak Particle Velocity (inches per second): V = 160 (SD)"-1.6 V = 00:12 (*max. limit in mining permit is: V = 1.0 ips) Based on known distances from the blast to the seismograph and any additional location, the expected vibration level can be estimated at the second location as follows: V = Particle velocity measured by the seismograph (ips): V* = 0.07 DS = Distance from blast to seismograph (ft): DS* = 1500.00 d = Distance from blast to second location (ft): d* = 1500.00 PPV = Theoretical peak particle velocity at the closest offsite occupied structure (ips): PPV = V(DS/d)"1.5 PPV= 0.0700 Airblast (Overpressure) Check: P = Unconfined Airblast/Overpressure (psi): P = 82 (D/W"0.33)"-1.2 P = 0.119076 To convert (psi) to (dBL): (P/2.9 x 10"-9)log x 20 P = 152.27 AB = Confined Aftlast/Overpressure (dBL): AB = P (dBL) - 35 dBL (for quarry situation) (*max. limit in mining permit is: AB = 4M_ dBL) AB= �r11.27t1 0 4D Explosives Column Check: (this is a very approximate method based upon numerous assumptions; specific densities may vary greatly depending upon the type and manufacturer of the explosive products used in the shot; must consider each explosive used; refer to Dupont Handbook for actual SPD, otherwise use the following:) Assumptions (per Ireco): If "straight" emulsion is used, use SPD (specific density) = 1.20 If a "blend/slurry" is used, use SPD (specific density) = 1.25 If "straight" anfo is used, use SPD (specific density) = 0.85 Ratio between explosives: Total pounds of Explos. #1* = 7360.00 Total pounds of Explos. #2* = NIA Ratio between explosives = NIA Average pounds of explosives used per hole (pounds)* = 149.00 O�onl"Jo ..o of a ends of o ploni..nn nnr tinln 4n rn4in• W. nv�mi �� arcraoac pvi�nU v� vxN,yorrca Noi nvIc UUa w Nmw. Explosive #1 = 7360.00 Explosive #2 = NIA SPD = Specific densities for each explosive: SPD for Explos. #1* = 0.85 SPD for Explos. #2* = NIA HD = Hole Diameter Used in Shot (inches): HD* = 4.00 LID = Loading Density (pounds per foot of column): LD = SPD(.34)(HD)12 LD for Explos. #1 = 4.62 LID for Explos. #2 = NIA Explosive column height for each explosive (feet): Explos. #1 = 32.22 Explos. #2 = NIA Total expios. column height = 32.22 Stemming height used in shot (feet)* = 8.00 ki ex n A Total height of explosive column(s) and stemming in the hole = 40.22�, Total depth of hole denoted on the blasting report for the shot in question* =' X00, 15V'15� e Analysis Completed By: Date: 1 E LAND QUALITY SECTION BLASTING ANALYSIS WORKSHEET (* = denotes fields where input data is needed) Permit No.*: 92-03 Permittee*: HANSON AGGREGATES Mine Name*: CRABTREE QUARRY Blast Report No.*: 48 Peak Particle Velocity Check: Date of Blast*: 07/18/00 Time of Blast*: 13:06 D = Distance to closest offsite occupied structure (ft): D* = 1500.00 W = Maximum pounds of explosives per delay (pounds): W* = 319.00 SD = Scaled Distance: SD = D/W^0.5 SD = 83.98 V = Peak Particle Velocity (inches per second): V = 160 (SD)"-1.6 V W0:13 . (*max. limit in mining permit is: V = 1.0 ips) Based on known distances from the blast to the seismograph and any additional location, the expected vibration level can be estimated at the second location as follows: V = Particle velocity measured by the seismograph (ips): V* = 0.07 DS = Distance from blast to seismograph (ft): DS* = 1500.00 d = Distance from blast to second location (ft): d* = 1500.00 PPV = Theoretical peak particle velocity at the closest offsite occupied structure (ips): PPV = V(DS/d)^1.5 PPV= 0.0700 Airblast (Overpressure) Check: P = Unconfined Airblast/Overpressure (psi): P = 82 (D/W^0.33)^-1.2 P = 0.124167 To convert (psi) to (dBL): (P/2.9 x 10^-9)log x 20 P = 152.63 AB = Confined AirblastJOverpressure (dBL): AB = P (dBL) - 35 dBL (for quarry situation) AB= D117'N61 (*max. limit in mining permit is: AB = QA_ dBL) V, 0 E 0 0 Explosives Column Check: (this is a very approximate method based upon numerous assumptions; specific densities may vary greatly depending upon the type and manufacturer of the explosive products used in the shot; must consider each explosive used; rPfPr to nunnnt Hanrlhnnk fnr ar:firal RPr) nthPrwi-qP imp ihP fnlinwinn•1 Assumptions (per Ireco): If "straight" emulsion is used, use SPD (specific density) = 1.20 If a "blend/slurry" is used, use SPD (specific density) = 1.25 If "straight" anfo is used, use SPD (specific density) = 0.85 Ratio between explosives: Total pounds of Explos. #1" = 5000.00 Total pounds of Explos. #2* = 4000.00 Ratio between explosives = 1.25 Average pounds of explosives used per hole (pounds)* = 155.00 Breakdown of average pounds of explosives per hole due to ratio: Explosive #1 = 31.00 Explosive #2 = 124.00 SPD = Specific densities for each explosive: SPD for Explos. #1 * = 0.85 SPD for Explos. #2* = 1.25 HD = Hole Diameter Used in Shot (inches): HD* = 4.00 LD = Loading Density (pounds per foot of column): LD = SPD(.34)(HD)^2 LD for Explos. #1 = 4.62 LD for Explos. #2 = 6.80 Explosive column height for each explosive (feet): Explos. #1 = 6.70 Explos. #2 = 18.24 Total explos. column height = 24.94 Stemming height used in shot (feet)* = 6.00 Total height of explosive column(s) and stemming in the hole = CiO:��4IIJNj Total depth of hole denoted on the blasting report for the shot in question* =. 33r001) Analysis Completed By: Date: NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF LAND RESOURCES September 18, 2000 Mr. James R. H. Sprinkle Hanson Aggregates East, Inc. P.O. Box 13983 Research Triangle Park, North Carolina 27709-3983 RE: Blasting Complaint Crabtree Quarry Permit No, 92-03 Wake County Dear Mr. Sprinkle: The review has been completed on the shot records you previously submitted for the July 10, July 13 and July 18, 2000 blasts at the Crabtree Quarry. Your company has been found to be in compliance with the blasting requirements of your mining permit. I have already notified the complainant, Mr. Joseph Hail, of our findings. Based on the descriptions of the blasts you provided and on our review of the shot records it appears that adverse reaction to your blasting operations may be related to elevated airblast readings. While these readings are within the maximum limit specified in your permit they are sufficiently high enough to produce "nuisance" complaints. I strongly recommend that carefully review the blasting procedures employed at this facility and make adjustments to reduce offsite airblast levels, such as increasing stemming lengths and avoiding blast on cloudy days. Thank you for your continued cooperation. Sincerely, Judith A. Wehner Hssistaf t Jldle IviiniI g Specialist Land Quality Section cc: Mr. John Holley, P.E. Mr. Nigel Wills - 100 Crescent Centre Parkway, Suite 1240 Tucker, Georgia 30081 LANs QUALITY SECTION (91 9) 733.4574 FAX I91 9) 733-2876 GEOLOGICAL SURVEY SECTION (919) 733.2423 FAX (9191 733-0900 P.O. BOX 27697, RALEIGH, NORTH CAROLINA 2761 1 -7687 TELEPHONE (91 9) 733.3833 FAX (91 9) 71 5-8801 AN EQUAL OPPORTUN}TY/AFFIRMATIVE ACTION EMPLOYER - 50% RECYCLED/109a POST -CONSUMER PAPER NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF LAND RESOURCES September 18, 2000 Mr. Joseph Hail 4008 Oak Park Road Raleigh, North Carolina 27612 RE: Blasting Complaint Crabtree Quarry Permit No. 92-03 1 h 1.. I P` .....-.4. . V V alKe %Cou IIj/ Dear Mr. Hall: Our office has completed its review of Hanson Aggregates Carolina, Inc.'s shot records related to the July 10, 13, and 18, 2000 blasts at their Crabtree Quarry, It was found that Hanson Aggregates Carolina, Inc. was within the blasting requirements of their mining permit. All peak particle velocities, a measurement of ground vibration with units in inches per second (ips), were well below the maximum allowable limit of 1.0 ips specified in Hanson Aggregates Carolina. Inc.'s mining permit. More specifically, all recorded values were at or below 7 per cent of the maximum limit of 1.0 ips. According to extensive research by the U.S. Bureau of Mines and others, particle velocities below 0.5 ips effectively eliminate the possibility of any structural damage. All airblast readings, a measurement of the atmospheric pressure wave (overpressure) with units in psi or dBL, were below the maximum allowable limit of 128 dBL specified in Hanson Aggregates Carolina, Inc.'s mining permit and well below the U. S. Bureau of Mine's recognized level of 164 dBL for prevention of glass breakage. A key point worth noting is that glass breakage -occurs at much lower levels of overpressure than structural damage, such as cracking plaster. However, we did note that airblast increased with distance. We have brought this to Hanson Aggregates Carolina, Inc.'s attention and have suggested that they adjust their blasting practices to further reduce noise. LAND QUALITY SECTION (91 9) 733-4574 FAX 01 9) 733-2R76 GEOLOGICAL SURVEY SECTION (919) 733-2423 FAX (91 91 733.0900 P_O_ Box 2705A7. RAI EIGH NORTH CAOnr INN 2761 1-7697 TELEPHONE r91 9) 733.3a_33 FAX .., AN EQUAL. OPPORTUNITY / AFFIRMATIVE ACTION EMPLOYER - 50% 'RECYCLED/10% POST-CONSYUMSR PAPER 0 • Mr. Hall Page Two Thank you for your interest and patience in this matter. Hopefully we have answered your concerns adequately. If you should have any additional questions or concerns please advise at (919) 733-4574. Sincerely, jl�6001-tv Judith A. Wehner Assistant State Mining Specialist Land Quality Section cc: Mr. John Holley, P.E. �y]yA fa o 1 0 I ji, �Spp' v� l� 17 ,,, lit HANSOM AGGREGATES EAST CRABTREE QUARRY R.O. BOX 52039 - RALEIGH, NC 27612 BLAST REPORT Project: & UC;7, ,'o?^ Location: &a' / g� Date: Shot No. Seis. No. �a �` V Time Fired Scale Distances Particle Velocity Dist. To Neighbor /1 Max. Lbs.IDelay 1. Type Rock L-Z'-X-, 7, Sub -drilling 3 2. Type Drill a �� /, i _ 8. Height of Bench 3. Bit Size9. Stemming 4. No Holes .5- 10. Burden 5. Total Drill Ft %' 94.t i � _ 11. Spacing / 5. Drill Hours oL 3` 12. Open or Buffer L_nr- L^vSIVES CAPS Type Pounds Delay/No./Ft. Delay/No./Ft. c. To--, IF��od -I - c , CA lei S 3:> i Total Pounds Total Tons or CY 0 11 Pnrfnr BACISB�EAK FRAG�N Minor{�air-_�evere Goo -Fair- Lo ���odar�a�te-Qk WEATHER DATA 1. Inversion below 5,000 ft. (AGL) Base ,- /0 o Top - 2. Temperature to wipe out inverson . U 3 Expected High 4. Temperature at time of shot 5. Winds: Surface __, 7 5.000 ft. '2,000 ft 1 10,D00 ft. 1 Blaster: Foreman Superintendent: 07/14/2000 07:31 15704550626 VIRRA -T EcR • 11�V11.tioo Adndawan� Lpau PAGE 02 Event Report • Vawr r nne Vert at 12:59:57 July 13, 2000 Trigger source Geo: 0.0300 in/s Range Geo :5.00 In/6 Record Time 4,0 sec a1 1024 sps 9arlal Number 3197 V 2,5 MulVseis V Battery Level 0.9 Volts Calibration March 16, 2000 by VIBRA-TECH File Name E19783UK,3X1 Notes Locatlw—n: Client; CRABTREE UUARRY.RALEIGH,NC, HANSON AGGREGATES CO, Veer Name: VIBRA-TECH/CONT.CI;LLUTAR RECORDER Converted: July 13, 2009 14:04:3a (V4.02) E>dended Notes Post Event Notes AAlcrOPhoro Linear Weighting PBPL tl17,c B(L) at 3,833 sec ZC Freq 2.0 HE Channel Teat Passed (Freq 4 20.0 Hz Amp = 580 mv) Tram Vert Long PPY 13.027.5 ~21—•"5�1- 0.0450 0.0350 lnls ZC Freq gq �Hi Time (Rol, to Trig) 0,324 U58 0,200 sec Peak Acceleration 0.0398 0.0530 0.0331 g Peak Displacement 0.00014 0,00016 D.00016 in Dynamic Goo Cal. Passed Passed Passed Peak Vector Sum 0.0488 lNs at 0,304 sec MIcl- Long Vert Tran ! SSM RM10507 Ai,W vaitiiRE Frequency (KX) Tran: + Vert: x Lang: a 0.0 1.0 2.0 3.0 4.0 Time Scale: 0.20 see/dly Amplitude Scala>, Geo: 0.0200 In/s/div Mic 0.00050 psi(L)Idiv Trigger - ►-- — —4 PAAfAA•. I.A. 11 Min MAa2,A(PI1 Format Coovriahted 11146.190 nn 0.0 0.0 0.0 07/14/2000 07:31 15704550626 ViBRA -TECH Event Report PAGE 03 Th. YlbraNw Mratmrinl IMAM . DatalTlms Tran at 13:0C:46 July 13. 2000 Serial Number 3354 V 2.5 Multi5ais V Trfgggr source Gao: 0.0200 iris Battery Level 6.9 Volts Rafkga Gee ;5,00 in/8 Calibration March 16, 2000 by VIBRA-TECH Record Time 4.0 sec at 1024 sps ffi8 Name E35483UK.5A1 n9C@O Location, CRABTREE QUARRY,RALEIGsH,NC, Client; HANSON AGGREGATES EAST User Name. VIBRA-TECHlCGPtT.CELLU_AR RECORDER Converted: July 13, 20M 14:04'AS (V4.02) Extended %ot60 RECORDING LOCATION' SET LIP ON GROUND APPROX.100 FE ET WEST OFTHE RES, AT 3904 OAKPARK ROAD, RALEIGH. NO RTH CAROLINA. Post Event Notes u Q d Microphone Llnear Weighttng PSPL kfi7. B(L) at 1.593 sec 2'C Freq 3,0 Hz Channel Test Passed (Frmq = 20.0 Hz Amp = 480 rnv) Tran Vert Long - PP'V 0.0250 0.0150 S6. O. Q2Sr0" iNs zc Freq �28 2 " 23�Hz Time (Rai. to Trig) `6.'883 0.000'"`""0:3181"-6sec Peak Acoeleration 0,01W 0.00583 0.0133 g Peak Displacement 0.00013 0.00011 0.00016 in Dvnamlc Goo Cal. Passed Passed Passed Peak Vector Sum 0.0300 in/s at 0.083 sec WeL Vert Tran , 1.0 Ui9BM t't 8507 And OSMRE s T. No velocity above 0.04 In/s i I 4� _. 2.0 Frequency(Hz) Tran•. + Vert: x Long, o Time Scats: 0.20 secldiv Amptitude scale; Geo: 0.0200 in181div Mic: 0,00050 psi(L)Idly Trigger - 10-- — --411 Printed: July 13, 2000 IV 4.D2.4.021 Famiat Capyrighted 1998.1990 3.0 4.0 t 0.0 0.0 010 0.0 377 Carowfnds Blvd., Suite 112 VI -BRA -TECH ENGINEERIS' 803-548-3066 Ft. Mill, 5C 29715 BLAST AND SEISMOGRAPHIC REPORT FAX: 803-548-3083 nClient _^[y 1�r3-f o -7_ I I Job Location O B L A T D T A S E S M 0 R A P H D A T A Date - O J Blast No. Time— 41 Exact Blast Location __d «!Jc_ r Fe?- No. of Holes Diameter �� u� in. Avg. Depth }'ft. Subg'rade 7f Spacing _ I _ ft. Burden ft. AVgg.. Stemming � 0� _ M 3.y S O14e>1 /" t y7 31�" /hS Make & Type of Explosives: f � Qu-rt� .*,a Ibs. �i a As -- - lbs. I A5P)4 to 13'pej 7x<A _. _ o lbs. Ibs. Total Explosives Seismograph No, 7 V, _ Exact Seismograph Location Ibs Delay Make MS f x / Delay�pe t dos.l�t..sl�y�-2 a op- f, Min. Delay Period_ 02 5'~ % D O O ms. Max. Lbs./Delay Period ._ , ,1� Ibs. ti / Blaster--��S r� Weather ��r'�•E�_ _ _ - Wind direction & Sri 4 A) Seismograph Distance & Direction fromi6la t Peak Overpressure . dB Meters+'. Peak Particle VelocityQ'1_ ips Comments: LEverlert Onl Range/Gain Setting ipsrigger Level 41N Operator Cassette No n f� E HANSON AGGREGATES EAST CRABTREE QUARRY P.O. BOX 52039 - RALEIGH, NC 27612 BLAST REPORT ?roIect p,^ Locations_ A 4 1,kU bate: G�7 Snot No. / jS®ist•No Time Fired 14 /9_2 Scale Distance g�`/r _ Particle Velocity o U Dist To Neighbor /.;fbD ° Max. Lbs./Delay Type Rock�,�,r�,;7t 7, Sub -drilling Type Drill /iwr)r4v 1, 8, Height of Bench _ 3a - 3 Bit Size `/' 9. Stemming Co -:iu` No. Holes ST! _ 10. Burden e? Total Drill Ft. 2 ! 11. Spacing Drill Hours ��'�15E 12, Open or Butler EXPLOSIVES CAPS Type� Pounds DelayfNo./Ft. Delay/No.IFt, n c Ve V 3,�y XA �f T oial Pounds Total Tons or Cy Powder Factor SACK EAK k,lino atir evere F�NTATION od- air -Poor WEATHER DATA Loud-Q,od'eratp buiet 1 Inversion below 5,000 ft. (AGL) Base i/41U Top 2 Temperature to wipe out inverson 3 Expected High Temperature at time of shot 9�c ".indS. -Surface CG 47 ! 5,000 ft. 4140! s- 2,040 ft. 10.000 ft. ! Blaster: Foreman. Superintendent: 0 t a#i -_}.•'F I ;l. {�.. ._Y. 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' Y- I 'rri* , T 4-, I 1 1 J �r..� ' ,-� T 'R t--S .. r .YY'.� !-{-t- 1 i i I - 'I_�I •-... .... I t—r^I—L- -'I--•-c i i 1 r - t �' - - - r - I I' 1 ,�1 �- ri, ...}, '-rf- -}-..' .� t 'Cj"j. •t-t I I 1 I7-• I-. .r :. I IT I r I . I . 4r I " i �'it-t ...... \ C /� Y. :_r• I # L: 1 I - r{I 'I I r. 'r-i �-{ tT t fI . _ 'r-r ! �. 'a't Y:f « .1 1 .-I- i'',rr .�+�-{. ,•r-+-r 'r'T '�{!r :i-r7 , S-..•.. 1 f I 1 . ......... _: r I ...::....:'. .. ...... ,- 1 .*., 1 _— I I I 1.... 77, _.. .:-.,- --.-.. trr«I 7.47lt4t-;L-�.I-Ir'.,'•r.�.:.::.,I ....I....., .. j - I � i _I ,-.- , rt - -1� L 1, -•--•-__I r I�1 I �- tiTFI:, _elyY rr-r r7#It 77 i_i r 07,120/2000 10:01 15704550626 VIBRA -TECH iv %Ontinn m—b. y 13wu DaterTime Tran at 13:10:40 July 1 B. 20DO Trigger Source OvQ 0.0200 In/s Range Get :5,001nis Record Time 4.0 sec at 1024 sps Event Report Serial Number 3354 V 23 MuMeis V Battery Level 7,0 V¢Its C44ttsratiw March 16, 2000 by VlBRA-TECH File Name E354843T.XS1 Notes Location: CRABTREE QUARRY,RALEIGH,NC. Client: HANSON AGGREGATES EAST User {dame: ViBRA-TECNICONT.CELLULAR RECORDER-' - Converted: July 18, 2000 14:00:33 (V4,02) Extsn"d Notes RECORD4NG LOCATION: SET UP ON GROUND APPROX.100 FE ET WEST OFTHE RES. AT 3904 OAKPARK ROAD, RALEIGH, NO RTH CAROLINA. Poet Event Notes k u.Mrv..ti....w�hl�iny„l•,tin„n �IIwI ,mooZY ub PSPL 122 dB(L) at 1.797 sec ZC Freq 28'Hz Channel Feet Passed (Freq a 20.0 Hz Amp = 474 mv) Tran Vert Long PPY 0.0300 0 200 0.0150 WS ZG Freq �4357� �_ 47� Hz Time (Rol, to Trig) 0.229 0.265 0.096 sec Peak Acceleration 0.0205 0,0133 0.0133 g Peak Diaplaeement 0,00011 0.00009 0,00011 'n Dynamic Goo Cal. Passed Passed Passed Peak Vector Sum 0.0319 inls at 0.229 sec USSM R1860T And OSMRE s 10 20 Frequency fl-&) Tran; } Vert x Lang: e PAGE 06 K MiCL k ,r i.ao•. .- ,.,.wcrs—�c...�.-.--� 1 I r � _r-�v"--o•r-1 0.8 Long T Vert y jc �l t �,..-- ,. - -...� .� _ T.. _ _ _.. --- 0.0 T Tran 7 TM.A .�,�). � *dbr+.�..�« ....-� - .-.-�..-.�___-__r...w...�., .__.. 0.0 1.o z.o 3.0 4.o Time Scale: 0.20 socldiv Amplttude Scale: Goo: 0.0200 inlsldly Mic: O.00t00 psl(L)ldiv Trigger n 1~ — ---4 Printed: July 18. 2000 IV 4.02 • 4,02) Format Copyrlghtad tHS-1 Dog 37/20/2000 ?0:01 15704550626 VtBPA T>E;CH Ike R.".4 Dati0ims Vert at 13:09'.49 July 18, 2000 Trigger Sourca Geo: 0,0300 inla Rang% Geo -.5.00 inls Record Time 4.0 seC at 1024 aps Event Report O Serial Number 3197 V 2.5 MultiSais V Battery Level 6.9 Volts Gallhration March 16, 2000 by VIBRA-TECH File Name E197843T.WD1 Notes Location; CRABTREE QUARRY,RALEIGH,NC. Cllent, HANSON AGGREGATES CO. User Name: VIBRA-TECHICONT.CELLULAR RECORCITR Converted: Jury 18, 2000 14:00:32 (VCO2) Extended Notes RECORDING LOCATION: SET UP ON GROUND AT THE SOUTH ERN CORNER OF 5501 DURALEIGH ROAD,THE COMMONS AT CURALEIGH RIDGE,RALEIG H, NORTH CAROLINA roar QVen[ rrotee Microphone inea fWelghting PSPL �1,1'4+dB(L) at 0.309 sec ZC Freq WA Channel Test Passed (Freq = 20.0 Hz Amp = 584 mv) Tran Vert Long PPV 0.0400---0 0660-0.0475 inls ZL Freq �2!i ' ~-�tc30 - Hz Time (Rel. to Trig) 0.288-6'3jr, '0.417 seC Peak Acceleration 0.0597 0.106 0,0597 g Peak Displacement 0.00020 0.00014 0,00008 in Dynamic Goo Cal, Passed Passed Passed Peak vector Sum 0.0806 Inia at 0.311 sec NIA: Not Applicable USSM RISS07 And OSMRE PAGE 07 0 05-H K I x i s 10 is sa 100 } Prequsncy (Hr) Tran: + Vert: x Long: o MicL F � i LongI.�ar1..N,y.wSµ+rw..ww...,.....,,.«.....,+�w....,.«.....w� .... , ' 11 I • T Vert Ll iij�MIA ��1'1111�}}YJ��f;VMki+h4,MM�h�1Wh1NJ1�Ji�4�11'+1'rl�'M+W4'iHA�.............. AWhi4W,t44A41 W�VWHL4W�14Wd4WAW�WrW+�1V�41A`..._� Tran — ---- -- }— ; -i- �� t .6 2.0 Time Scale: 0.20 sec/div Amplitude Scale: Geo: 0 0200 in/s/div Mia 0.00050 psi(L)/dIv Trigger a ►-- -- --4 PnRUO; July 10. 2000 (V 4.02 • 4,02) Format Capyrighted If"-1040 s.0 a,0 0.0 0.0 0.0 0.0 0'�v 0 NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF LAND RESOURCES July 14, 2000 Mr. James Sprinkle Hanson Aggregates East, Inc. P.O. Box 13983 Research Triangle Park, North Carolina 27709-3983 RE: Blasting Complaint Crabtree Quarry Permit No. 92-03 Wake County Neuse River Basin Dear Mr. Sprinkle: .This office recently received a complaint directed at blasting practices conducted at the above referenced quarry. According to the complainant, Mr. Joseph Hail, the blast at Crabtree Quarry conducted on July 13, 2000 was excessively loud. As provided in the mining permit for this site, you are requested to provide to this office duplicate copies of all shot records related to the blasts conducted on July 13, 2000 including any seismograph records made. Furthermore, please forward all shot records for one production shot conducted immediately prior to and one production shot after these blasts for review. I I^I Irsnoe4 w I I rlierI tee Fhio moor Lari+h I1Ar W-mil Wie 7rir1roee 7nr"i 1 2%A �Jj JGJL YOU UIJLiL.iJJ U 110 11 IGILLGI •1ILt 1 ITII I. 1 IGI I1. 1 IIN U""I V u11V telephone number are as follows: Mr. Joseph Hall 4008 Oak Park Road Raleigh, North Carolina 27612 (919) 7.87-5235 LAND QUALITY SECTION (919) 733-4S74 FAX (919)733.2B76 GEOLOGICAL SURVEY SECTION (919) 733.2423 FAX (91 9) 733.09oo P.O. BOX 27687, RALEIGH, NORTH CAROLINA 2761 1-7687 TELEPHONE (91 9) 733-3833 FAX (919) 71 S-8801 AN EQUAL OPPORTUNITY/AFFIRMATIVE ACTION EMPLOYER- SO% RECYCLED/10% POST -CONSUMER -PAPER Mr. Sprinkle Page Two I look forward to receiving the requested information in the near future. Your continued cooperation will be appreciated. Sincerely, Judith A_ Wehner Assistant State Mining Specialist Land Quality Section rrrr• hAr inhn Wr%llnir D C vv. 4rn . kiwi n 1 a w11c—Y I . �. Mr. Joseph Hall U �4 &,-du V- 1: 1I �f�'JVJ�(///1//_/J�J�I //l'I /7 A'-l^r - /. V V� 1 dr 'Jot � rQF EI A � � • /� l � ��w 1 / A 1 I ' Jf1f1 , i rr. 9 CREEK CREEFC W^TER,E3HEQ PROJECT SPONSORS County of Wake (funding sponsor) Wake Soil & Water Conservation District Durham Soil & Water Conservation District City of Raleigh ASSISTED BY USDA Soil Conservation Service N.C. Department of Natural Resources and Community Development PROJECT DESCRIPTION 11 Floodwater Retarding Structures . 3.2 Miles of Channel Excavation PROJECT STATUS 9 Structure and All Channel Work Completed Structure 23 Under Construction (92% Complete) Structure 25 Remains to be Built PROJECT COSTS SCS Wake County State Total million dollars Completed Structures (9) 4.0 5.5 - 9.5 Structure 23 3.5 1.1 0.5 5.1 Total 7.5 6.6 0.5 14.6 Structure 25 4.5 4.3 0.3 9.1 Total Project 121'0 10.9 0.8 23.7 PROJECT BENEFITS Flood Protection for urban and industrial areas in Western Wake County and the City of Raleigh Recreation with over 650 acres of lake surface SITE 25 AS ORIGINALLY PLANNED Tome a F anne ' i I he I nra+gad off 1),ira I g i gh Ro G` � � rJ � I r� :;' i i ii � t�aiii i yr .� i �v 4.v �.v p � ad adjacent to the Nello Teer Quarry. The structure will control stormwater runoff from a drainage area of approximately 15,590 acres, which represents roughly 26% of the controlied drainage area for the entire Crabtree project. As originally proposed, Site 25 will function as a "dry" structure. A dry structure refers to a dam that retains no permanent impoundment behind the embankment. Floodwaters are impounded only temporarily during and after a significant rainfall es_eRt_ FnIlowing the accumulation of stored runoff, the entire volume of storage is released .in a controlled manner to prevent downstream flooding. This type of structure provides for use of the entire reservoir area (retarding pool) for activities capable of tolerating temporary flooding. r 2 During a 100 year storm event, the temporary impoundment area behind Site 25 will encompass 390 acres, 292 acres of which lie within the boundaries of Umstead State Park. In order to facilitate the construction of Site 25, it will be necessary for Wake County to obtain a flood easement from the State of North Carolina over the area lying within Umstead Park. In an effort to secure certain flood easement privileges over park land, Wake County and State administrative representatives agreed to a specific plan of action. This plan called for joint financial participation of the County and State regarding the acquisition of approximately 97 acres, adjacent to Umstead, earmarked for inclusion into the Umstead system. The County's portion of this priority acquisition was intended to serve as mitigative lands necessary to fulfill certain "conversion" requirements as prescribed under current provisions of the deed for Umstead Park. Immediately following the acquisition of this tract, the conversion proposed was forwarded to the Department of Interior-•- National Park Service for review and approval. Recently, several questions have been raised concerning the environmental impact this flood control structure could possibly have on the flood pool area lying within Umstead Park. The National Park Service has requested that these concerns be addressed before an option can be rendered concerning the adequacy of the current conversion proposal.. - ALTERNATE OPTION FOR DEVELOPMENT OF SITE 25 As part of the evaluation process relative to the environmental concerns, a promising option concerning Site 25 has emerged — the possibility of using the existing Nello Teer quarry in lieu of constructing a standard embankment structure. A sizable portion of the runoff from significant storm events would be diverted directly into the quarry for temporary impoundment and storage. This diversion action is to be accomplished by the 'installation of a diversion structure or weir in.Crabtree Creek. Immediately following a storm, the stored runoff will be evacuated via an elaborate system of pumps. The pump system will provide for a controlled release or discharge of accumulated floodwaters. The quarry will be pumped down in a timely manner to provide sufficient storage for subsequent rainfall events. - This concept is contrary to the original design for Structure 25. The original design called for an embankment structure which would temporarily impound relatively shallow floodwaters over a 390 acre area behind the embankment. With the quarry option, floodwaters would be _s to r ed w i -it Ike i n tho 1 1 i is wf the q;aa rry, ,�, ,�����. I I %ut V. ry Ae ep area -- 14 acres - top surface area by 270 feet in depth. Using the quarry virtually eliminates the temporary inundation of lands upstream of the quarry site, subsequently eiiminating•the need for certain easement: over privately owned lands and lands within the Umstead Park System. 3 Listed below are brief comparisons of the original design and the quarry alternative. Key components to the development processes are compared and briefly evaivated. Feasibility Study — Preliminary results of an engineering evaluation of the quarry option.by the USDA --Soil Conservation Service indicate that use of the quarry in lieu of an embankment structure,is a reasonable alternative. Information regarding the proposed maximum expansion limits of the quarry reveals that, upon its completion, the quarry will have a flood storage capacity equal to or slightly larger than the capacity originally planned for Site 25. Although the system of pumps that will be needed to evacuate the quarry is expensive,'the Soil Conservation Service is estimating a significant decrease in construction costs if the quarry option is pursued. Preliminary cost projections for the quarry option are estimated at $2 — 3 million dollars as compared to the original cost estimate of $4.5 million. Landri_ghts Acquisition — As originally planned, Site 25 would require that certain landrights be acquired over approximately 390 acres.' The quarry option eliminates the need for any flood easements or fee simple acquisitions since there will be no significant impoundment of floodwaters beyond the perimeter of the quarry. Landrights costs originally estimated at $2.S million would be reduced to a nominal fee since the Teer Corporation is prepared to donate the quarry to Wake County immediately following abandonment. Teer plans to exhaust its resources at this pit within 3--4 years. Road/Utility Modifications_ — Subsequent road and utility modifications will also be necessary if Site 25 were implemented as initially planned. Said modifications include the concrete encasement of any existing sanitary sewerlines as well as the upgrading of Ebenezer Church Road. Costs associated with these modifications are borne by the primary local sponsor, Wake County. The costs are projected to be slightly above $2 million dollars. With the elimination of the embankment and related temporary inundation around Ebenezer Church Road, these modifications are no longer necessary. Assessment or c.nv iTonmeni tal impacts — With respect to the initial _mp,..a�_ _ design of Site 25 and the temporary inundation of park lands, environmental concerns have recently become a controversial issue. Although the State and County have reached a understanding regarding the environmental issues, the National Park Service maintains that additiona•I environmental concerns must be addressed before they will grant the conveyance of a flood easement over park lands. Such information is to be presented in the form of a supplemental Environmental Impact -Statement. 4 Even with the timely completion of a supplemental EIS, there are no guarantees that,the necessary easements within Umstead Park will be conveyed. NPS could rule that the current conversion proposal is inadequate, thus denying the flood easement so essential to completion of the project. This type of action on behalf of NPS would force the local sponsors into an extended period of litigation with the Department of Interior. The quarry option eliminates the temporary impoundment of floodwaters within Umstead Park, thus eliminating most environmental concerns. Additional Benefits - The proposed quarry option features additional benefits which deserve mentioning. First, using a pumping system to evacuate the pit after a significant rainfall will allow for increased control over the discharge of stored floodwaters. Second, additional flood protection benefits can be derived, particularly with smaller storm events, should this design change be implemented. Third, regulated discharge of stored runoff could be - used to Rummnnt flow in C=rabtrgA rrank during extended parinri� of rirniigh+ hr low flow conditions. The Teer Company has also expressed the willingness to entertain offers on behalf of the City of Raleigh regarding the acquisition of additional acreage north of -the existing quarry for the establishment Of a city park. Related Issues -'One very important issue -of this proposal is that the Nello Teer Company be permitted to establish a new quarry operation on the portion of the Teer land south of Crabtree Creek. This mining operation would necessitate the realignment of the Duraleigh Road Extension Project. As originally planned, the roadway project would bisect the tract Teer intends to mine. Nel'lo Teer has presented two alternate alignments for this roadway project and has offered to dedicate the right-of-way to the City. The right -of --way is currently valued in excess of $0.5 million dollars. 5 SUMMARY uvera i { , using the IVe I I O leer q:iiarry in { I eU of d Vdlll for Site LJ is a very attractive design •alternative. The following table provides a brief overview of both development options. Development Phase Structure Design Landrights Required Landrights Costs Construction Costs Original Design "Dry" Dam flood easements and/or title to approximately 390 acres (292 lying within Umstead Park) estimated @ $2.5 million estimated @ $4.5 million Utility Modifications $60,000 Road Mod i f i cations Environmental Assessment estimated @ $2.0 million highly controversial, will require supplemental EIS, will probably result in an extended period of litigation. Quarry Option "Retention" Structure all landrights (including quarry) will be donated by Teer Corporation to Wake County. $2 -- 3 mi I I ion virtually eliminates the environmental impact on Umstead State Park, less controversial, will require a significantly reduced environmental assessment. The quarry option could prove to be a viable solution to a highly controversial project. Wake County and the Soil Conservation Service are actively pursuing the quarry option. Potential environmental concerns are being investigated. In addition, engineering evaluations of the hydraulics of'the quarry system including the channel, ' diversion structure, allya evacuation pi.iliipa are coin{ iru { irg. If, ,:pv•• compietioR of these studies, the quarry option proves to be a viable alternative, the final design of Site 25 quarry option will begin. CRABTREE CREEK WATERSHED STRUCTURE No. 25 _a DAM CHEEK AV ice\ � J oJQ� I� SRO CLEARED 1 O CRABTREE CREEK WATERSHED STRUCTURE No. 25 QUARRY OPYtON __ CREEK !I DIVERSION STRUC WEIR o �\ Y I Crabtree Creek. Watershed {QUARRY PIT ALTERNATIVE T4 STRUCTURE 25 II y i n APRIL, 1988 INDEX PAGE SECTION 1 CRABTREE CREEK PROJECT OVERVIEW . . . . . . . . . 3 SF.CTTON 2 QITARRY PTT VP.RSITS GTRTTrTITR17 25, DAM . . . . . . . 3 SECTION 3 ENVIRONMENTAL IMPACTS OF QUARRY PIT IMPOUNDMENT OF WATER . . . . . . . . . . . . . . . . . . . . 5 SECTION 4 SITE GEOLOGY . . . . . . . . . . . . . . . . . . 7 SECTION 5 METHODS OF HYDROLOGIC ANALYSIS . . . . . . . . . 8 SECTION 5.1 HYDROLOGY . . . . . . . . . . . . . . . . . 8 SECTION 5.2 CHANNEL HYDRAULICS . . . . . . . . . . . . . 8 SECTION 6 PLANNED QUARRY PIT STRUCTURE . . . . . . . . . . 10 SECTION 6.1 WEIR OUTLET CHANNEL . . . . . . . . . . . . 10 SECTION 6.2 QUARRY SPILLWAY . . . . . . . . . . . . . . 13 SECTION 6.21 EFFECTS OF DOWNSTREAM CONDITIONS . . . . 14 SECTION 6.3 QUARRY PIT STORAGE REQUIREMENTS . . . . . . 15 SECTTQN A A CITTARRV PTT PTTMPTNC_ RPf11TTPm_4ENTC 15 SECTION 7 COST ANALYSIS . . . . . . . . . . . . . . . . . 18 SECTION 8 RECOMMENDATIONS . . . . . . . . . . . . . . . . . 18 MAY, 1988 PAGE l APPENDICIES APPENDIX A . . . . . . . . . . CRABTREE CREEK CHRONOLOGY OF EVENTS APPENDIX B . . . . . . . . . . . . . . . . . . . . . WATERSHED MAP APPENDIX C . . . . . . . . . . . . MAP OF NELLO L. TEER MINING PLAN APPENDIX D . . . . . . . . . . . PLAN VIEW OF QUARRY PIT STRUCTURE APPENDIX E . . . . . . PROFILE OF CRABTREE CREEK WITH DESIGN STORMS APPENDIX F . . . . . . . MIXING RATIOS FOR QUARRY PIT WATER QUALITY FIGURES PAGE FIGURE 1 WATERSHED RESPONSE TO THE LARGEST FLOOD OF RECORD 4 FIGURE 2 PLAN VIEW OF QUARRY PIT FLOOD CONTROL STRUCTURE 11 FIGURE 3 . . . . . PLAN VIEW OF WEIR AT QUARRY PIT STRUCTURE i2 FIGURE 4 . . . . FLOOD FLOW DIVISION AT QUARRY PIT STRUCTURE 17 TABLES PAGE TABLE 1 VELOCITIES AND ELEVATIONS IN CRABTREE CREEK AT 9 QUARRY PIT SPILLWAY FOR THE 100 YEAR DESIGN STORM TABLE 2 . . . STAGE VERSUS STORAGE FOR THE QUARRY PIT 16 MAY, 1988 PAGE 2 1.0 CRABTREE CREEK PROJECT OVERVIEW In 1964, the Crabtree Creek Work Plan was approved by both the Sponsors and Congress. Since then nine floodwater retarding dams have been built, one is under construction and the last, which is discussed in this report, is in planning. See Appendix A for a chronology of events for the development and implementation of the Crabtree Creek Work Plan. Currently, Structure Number 23 is due to be completed in May of 1988 and Structure Number 25 is the only one remaining to be built. This will complete r � l ( 1 1) F1 t+ a system o� eie'v'eia \i1� &t u`wuui L retarding dams which will benefit the City of Raleigh and surrounding urban areas (See Appendix B for map of watershed). Structure 25 was originally proposed to be a dry dam in the Work Plan. This Structure has met with considerable local opposition due to its storage of flood waters on Umstead State Park land. It has been proposed that a local Quarry Pit owned by the Nello L. Teer Company be used to store floodwaters and thereby replace Structure 25. This proposed change to the Work Plan is the reason for this report. Figure 1 shows the effects of this project on flood elevations at Blue Ridge Road and Crabtree Valley Mall for the largest storm on record. Crabtree Valley Mall, which is the largest mall in the area, is about two miles downstream of the Quarry Pit Structure site. The bottom line Ir ed) ill Figure 1 g-L the rise and Ldll UL �7 trC d7Tl WcltC1 4u1111 �' this flood if all structures, including Structure 25, were installed. Note that the Quarry Pit Alternative and Structure 25 will function similarly and this plot will still be valid. The blue line above the lower red line shows the flood elevations for this storm if Structure 25/Quarry Pit were not installed. 2.0 QUARRY PIT VERSUS STR 25 DAM The Quarry Pit Structure will be designed to function like the originally planned Structure 25 dam except that it will not raise the level of floodwater in Umstead State Park above that experienced MAY, 1988 PAGE 3 236 cn Lu :::- 232 0 co 224 w 220.1 - 0 0 216 u- i i C FIGURE 1: fn- '\vcad\data\largefld.2d' spool fn- '\vcad\spool\largefld.spl' CRABTREE CREEK WATERSHED (Data Supplied by SCS, 4/i9B7) (P-tot=10.01 in., P-i day=5.7 in., AMC III, 8/2411908) I j W/0 PROJECT �- _� W/O STR 23 & 25— i � W/u Z3 1 m do�— T 1U" ` " 2u 30 �..� 4U .� 60 t..� 60 i 0 I�� III'b III"b III"b Ep"b I11 b Ili"D iH b ULUE RIDGE ROAD AND LLWER MALL AREA to-72j WATERSHED RESPONSE TO LARGEST STORM OF RECORD without the Quarry Pit Structure. The release flow from the Quarry Pit Structure will be equal to that of the planned Structure 25 dam release rate (3046 cfs). Therefore the original Work Plan economic analysis of downstream benefits will still be valid and need not be modified by this change to the Work Plan. 3.0 ENVIRONMENTAL IMPACTS AND PROCEDURES There are no known adverse environmental impacts to this alternative at this time. Preliminary concerns were expressed during initial consideration of the alternative. Subsequent review of baseline data, dilution computations, and on -site inspections indicate these initial concerns will not materialize into adverse effects. The first concern was the effect of a waste water treatment plant, located about 5 stream miles upstream of the Quarry Pit site, on surface water quality. This waste treatment plant at Cary has an average daily release rate of 3.04 (4.7 cfs) million -gallon -per day (mgd) at present. They currently are permitted for a release rate of 4 mgd (6.2 cfs), but have applied to increase that permitted rate to 16 mgd (25 cfs). The average mixing ratio for the 100 year storm is 523 to 1, for the 5 year storm is 502 to 1, for the 2 year storm is 389 to 1, and there is no flow into the Quarry Pit for the 1 year storm. The above mixing ratios indicate the number of parts of flood water that would be combined with 1 part of effluent discharge from the Cary waste treatment plant during the described storm frequency. These mixing ratios use the current average daily release rate and are given in Appendix F. The large amount of mixing combined with pumping the pit dry after each storm should assume no detrimental environmental effects to surface water quality. A second preliminary concern is centered around the effects of this same waste water treatment plant on groundwater, should seepage occur during storage in the quarry pit. Preliminary on --site investigations and historical records of groundwater seepage into the pit during quarry operations indicate no groundwater seepage to or from the MAY, 1988 PAGE 5 quarry pit. Prior to final actions on this alternative determinations of potential seepage as a result of increased "head" will be made. Should these investigations indicate areas, stratas, etc. which would yIle yuVJV 4V Vt�, py VG aeepP.b4, appropriate measures W1L1 VG -GY UpCu to minimize seepage as necessary to protect groundwater quality. A third preliminary concern deals with public safety with and without the quarry pit alternative. The present scenario is that quarry operations will cease in the next few years resulting in an abandoned quarry with depths of up to 250 feet. The mere presence of such a site is a potential public safety hazard. Should the quarry be used as a temporary flood storage reservoir, it seems reasonable that the A J.VG WV4IA J. VG illy lLLLVLGt+ more �.LVaGLy than it would VG if abandoned. Frequent visits by people responsible for operation and maintenance of the site would provide an official "presence" at the site and would serve to discourage public trespass. Use of site as temporary floodwater storage reservoir should have positive impacts on public safety by these frequent visits. Effects on environmental issues including fish and wildlife habitat, riparian vegetation, water quality (sedimentation during ,tr ction% i nd si and 0mot. J 11. call iJ LLul.LlVll J, l U use ITV LLVerJtVll, al1LL VLL,er Lssues generally associated with impoundment construction should also be positive as a result of the Quarry Pit alternative. Construction activities and other disruptions associated with large impoundments would be unnecessary if the quarry were used as a temporary reservoir. The environmental review proceps planned for this project entails the following: 1. S C S Will serve as environmental coordinator among participating groups and agencies. These include Nello Teer Company, N.C. Department of Transportation, N.C. Department of Natural Resources, and others. MAY, 1988 PAGE 6 2. Meetings with various groups and agencies will be conducted to gather respective environmental concerns, issues, and resolutions. 3. These will be incorporated and compiled into the environmental assessment for the Quarry Pit alternative. 4.0 SITE GEOLOGY Crabtree Creek watershed lies in the Southern Piedmont Physiographic Region. The Quarry Pit is located about 4.5 miles east of the inactive Tnnesboro fault in a se-uence of rock k^ the C 1 . Carolina .. �. slate belt. These rocks are a complexly interlayered sequence of high- to low-grade metamorphic rocks. They are orientated in a northeast -trending belt that is locally known as the Raleigh belt. The low-grade metamorphic rocks are located close to the Jonesboro fault. The Quarry Pit is located in a high-grade metamorphic rock. The rock unit is a felsic gneiss and schist and is of late Precambrian age. Generally, the rock which is mined at the quarry is light-colored and medium grained felsic gneiss. It is a durable, high grade constLµction quality crushed stone. The walls of the Quarry Pit appear very stable and stand at vertical slopes. The wall rock is rough and there appears to be tight joints and random fractures. Primary porosity is estimated to be low and the fractures are probably surface features originating from blasting in the mining operation. Presently, the Quarry Pit bottom is approximately 130 feet below n�_'t�__ Creek »�_y __d,_ry _4 do and with LLGULI.CC Creek. L ♦. L__L_L _L Llq L�/ V11-may �Le 1l[jpe[..L1Vll G111U conservation W�LIl Nello Teer personnel indicate that groundwater is not a problem at the Quarry Pit. Very little or no groundwater seeps into the Quarry Pit. Further investigation may be needed to confirm this seepage potential and determine the extent and nature of the joints and fractures of the Quarry Pit walls. MAY, 1988 PAGE 7 5.0 METHODS OF HYDROLOGIC ANALYSIS 5.1 HYDROLOGY Floodwater peak flows and hydrographs were developed for this watershed using the Soil Conservation Service TR-20 computer program for project formulation. This program uses output from the WSP2 computer program as discussed in the following section along with other input data such as drainage area, curve number, and travel timaa to rlayelnn riinnff lhvrlrnnranhr fT-nm g+ub=watersheds a::d channel route the runoff to an outlet. This structure will be evaluated with the 100, 5, 2, and 1 year 24 hour series of storms. A Type IT rainfall distribution, Antecedent Moisture Condition of 2, and a Dimensionless Hydrograph peak factor (K) of 256 were used. Four historical storms to which flood elevations were known were used to calibrate the TR-20 model used in this study. The four historical storms are: HISTORICAL STORM #1 - MAY 11th & 12th of 1957 HISTORICAL STORM #2 - FEBRUARY 2nd of 1973 HISTORICAL STORM #3 - .TUNE 29th of 1973 HISTORICAL STORM #4 - AUGUST 20th of 1986 J.2 CL�l- L HYDDAViICO The Soil Conservation Service Water Surface Profile computer program (WSP2) will be used to compute water surface profiles in open channels. It uses the Standard Step Method for running backwater profiles as described in Ven Te Chow's "Open Channel Hydraulics," McGraw Hill Co., New York, 1959. Surveyed valley and channel cross sections, bridge data, and channel roughness factors were input into this program along with a range of flows. A range of Manning's "n" values will be used to check the effects on the Quarry structure. This program uses Manning's equation MAY, 1988 PAGE 8 MANNING'S "n" 0.04 MANNING'S "n" = 0.07 X-SECT DIST FROM FLOW (Q) END VELOCITY VELOCITY ELEV END VELOCITY VELOCITY ELEV DOWNSTREAM AREA Q/A HHAD AREA Q/A HEAD SECTION (ft) (cfs) A (fr2) V /2G (ft) (ft) A (ft2) (ft/s) . ��u (ft) (ft) o� 3046 2113 1.44 n.n3 235.0 2113 1.44 0.03 235.0 87 2180 3046 2066 1.47 0.03 235,5 2066 1.47 0.03 235.5 88 1670 3046 1392 2.19 0.07 236.3 1392 2.19 0.07 236.3 89 890 3046 1280 2.38 0.09 236.7 12BG 2.38 0.09 236.7 90 560 3046 1274 2.39 0.09 236.9 1311 2,32 0.08 237.1 DURAL RD 30 3046 1291 2.36 0.09 236.9 1320 2.31 0.08 237.2 91 35 3046 938 3.25 0.16 236.9 974 3.13 0.15 237.2 911 630 3046 735 4.14 0.27 237.2 803 3.79 0.22 238.0 911AW 5 3046 655 4.65 0.34 237.1 723 4.21 0.28 237,9 WEIR1 5 3046 366 8.32 1.08 236.6 407 7.48 0.87 237.5 WEIR2 1 1046 366 8.32 1.08 236.6 407 7,48 O.17 237.5 911 A 7 3046 672 4.53 0.32 237.3 741 4.11 0.26 238.1 911 B LO 3046 2767 1.10 0.02 237.6 2963 1.03 0.02 238.4 911 C 37.5 4389 2794 1.57 0.04 237.6 2996 1.47 0.03 238.4 911 D 37.5 5733 2-6 2.1,10 0.07 237.6 2947 1.95 n.nb 238.4 911 E 37.5 7076 2792 2.53 0.10 237,6. 3016 2.35 0,09 238.4 911 F 37.5 8420 2809 3.00 0.14 237.5 3038 2.77 0.12 238.3 911 G 40 8420 1701 4.95 0.38 237.2 1890 4.46 0.31 238.2 911 H 25 8420 1224 6.88 0.73 236.7 1409 5.98 0.55 238.0 911 I 25 8420 1004 8.39 1.09 236.4 1182 7.12 0.79 237.9 911 J 25 8420 860 9.79 1.49 236.0 1051 8.01 1.00 237.8 911 K 25 8420 889 9.47 1.39 236.5 1048 8.03 1.00 238.0 911 L 50 8420 816 10.31 1.65 236.4 986 8.54 1.13 238.2 911 M 50 8420 718 11.73 2.13 236.1 937 8.99 1.25 238.4 911 N 55 8420 676 12,46 2,41 236.2 901 9,28 1.34 238.7 913 62 8420 511 16.48 4.21 236.2 678 12.42 2.39 238.6 913 A 250 8420 845 9.96 1.54 240.9 942 8.94 1.24 242.2 913 B 300 8420 972 8.66 1.17 242.6 1101 7.65 0.91 244.2 92 400 8420 2412 3.10 0.15 744.`2 2831 2.97 0.14 245.5 93 270 8420 2311 3.64 0.21 244.6 2571 3.28 0.17 245.7 94 80 8420 3180 2.65 0.11 244.9 3502 2.40 0.09 245.9 TABLE 1: VELOCITIES AND ELEVATIONS IN CRABTREE CREEK AND ADJACENT STILLING BASIN AT QUARRY PIT SPILLWAY FOR THE 100 YEAR DESIGN STORM and the Energy equation to determine the channel water elevation given a f low. Appendix D shows the location of cross sections used to model the Quarry Pit Structure in WSP2. Output flows from TR20 were used to run the final flow profiles in WSP2. This is necessary to insure slow water velocities and flat water surfaces in the stilling basin adjacent to and feeding the Quarry Pit Spillway. See Table 1 for the final results from WSP2. 6.0 PLANNED QUARRY PIT STRUCTURE The purpose of this structure is to reduce the outflow to that of the originally planned structure 25 without impeading normal flows. A side discharge channel/spillway with its crest 9.3 feet above the channel bottom would only allow flow into the Quarry Pit when channel flow was at least 9.3 feet deep. A positive control of downstream flow amounts will also be needed to ensure proper division of downstream flow with flow into the Quarry Pit. Flow into the Quarry Pit begins somewhere between the one year and two year 24 hour storms, or at approximately 1400 cfs. A plan view of this structure is shown in Figure 2. 6.1 WEIR OUTLET CHANNEL The weir outflow structure will be installed for positive control on the flow which continues downstream past the quarry apiylway. a proper division of flow into the Quarry Pit and down the channel would indicate a need for this structure. This weir type control structure Will ais0 reduce the eSteCt$ OL cnanges in uUWII$treal[I Cv[lut[.ioll5. This is necessary since Hare Snipe creek which enters Crabtree creek immediately above Crabtree valley Mall causes a backwater effect which continues upstream past this proposed Quarry Pit structure. Also the bridge at Duraleigh road is planned to be relocated which is about 1000 feet downstream of this proposed structure. These MAY, 1988 PAGE 10 0 w U] m w H Q Y w w m U w w ED U to CV 0 Z w U CREST OF PROPOSEQ j� - . b� 6� CHANNEL WEIR TO CONTROL �� DOWNSTREAM FLOW R STILLING BASIN off\ so d 0 z d a0��T� 0(L cr � Q�l cr- A01- S�OAµORE C, a 0 FIGURE 2= PLAN VIEW OF OUARRY PIT FLOOD CONTROL STRUCTURE CONCRETE WEIR STRUCTURE ORIGIONAL CHANNEL CROSS SECTION 4I' A r _ 1 SLOPE I I 1 1 EL 224---I----------r I ! 1 f 1 f k I f ! f 1 ! I f f 1 ! 1 35' I 15' ! 20' , ' 15' I f I I 1 I - - - - EL 240 ------- EL 225 FIGURE 3: PLAN VIEW OF WEIR AT QUARRY STRUCTURE downstream conditions necessitate a positive control at the Quarry Pit structure. A stilling basin will be used to slow channel flow velocities to less than four (4) feet per second prior to reaching the spillway crest or the weir outflow structure. See Table 1 for these velocities and note that the stilling basin/spillway are between cross sections 911B and 911F. The proposed weir outflow structure will be aligned with and across the channel. It is twenty (20) feet wide, crest elevation of 225 feet (the channel bottom is at elevation of 224 feet making this a submerged weir), sideslopes of 1:1, and a top elevation of 240 feet which is two feet above the 100 year 24 hour flood level. The weir will be of concrete set in bedrock and at least one (1) foot thick. The weir structure was designed using WSP2 due to its large degree of submergence at which point weir flow equations break down and channel flow profiles become the most accurate. See Figure 3 for a plan view of this weir outlet control structure. 6.2 QUARRY SPILLWAY The proposed Quarry spillway crest elevation will need to be enough above the Crabtree creek channel bottom so as to keep Quarry pit pumping cosC s at a minimum but yet not induce any increased flooding upstream into Umstead Park. To accomplish this will require a spillway of considerable length. The spillway will be cut through a hard massive sandstone which will resist weathering and other erosive actions. A stilling basin will be used to slow channel flow velocities to less than four (4) feet per second prior to reaching the spillway crest or the weir outflow structure. MAY, 1988 PAGE 13 The Quarry spillway will be 150 feet in crest length, 50 feet crest width, crest elevation of 233.3 feet (the channel bottom is at elevation 224 feet), inlet slope of ten (10) percent, outlet slope greater than one (1) percent, and sideslopes of 1:1. See figure 2 and Appendix D for a plan view of this spillway. Flow into the Quarry Pit via this spillway begins when channel flow reaches 9.3 feet in depth/elevation 233.3 feet. At this depth the channel flow would be 1400 cfs and equal to the peak that is a little more than that of a 1 year 24 hour design storm. For the 100 year 24 hour storm the flow would be at elevation 238 or six feet deep in this spillway. 6.21 EFFECTS OF DOWNSTREAM CONDITIONS ON QUARRY PIT STRUCTURE There are two downstream conditions which could affect the operation of this Quarry Pit flood control structure. The first, Duraleigh road, is not at present causing any backwater problems since it is a pier type bridge with a large flow area. However, this bridge is to be replace and realigned in the near future which could change this scenario. The second is about 8000 feet downstream of the Quarry Pit where Hare Snipe creek enters Crabtree creek immediately above Crabtree Valley Mall. Hare Snipe creek has a large uncontrolled drainage area which enters Crabtree creek and causes water coming down Crabtree creek to be several feet higher than it would without this backup at the confluences of these two creeks. If in the future there was channel work in this Crabtree Valley Mall area it would affect flood elevations to up beyond the Quarry Pit structure. The two above conditions necessitate a weir outlet control structure at the Quarry Pit to limit the effects of changes in downstream conditions on the ability of the Quarry Pit flood control structure to divide pit and downstream flows as planned. MAY, 1988 PAGE 14 6.3 QUARRY PIT STORAGE REQUIREMENTS The storage capacity of the Quarry Pit will be taken from the Nello L. Teer mining plans. They plan to operate this pit for two to five years or more, depending on the outcome of this proposal. See Appendix C for this map. The storage capacity of the Quarry Pit just below the crest of the spillway, elevation 232 feet, is 6458 acre-feet. See Table 2 for the stage -storage curve for this Quarry Pit. The SCS drawdown requirements for a dam to empty its retarding pool from a 100 year 24 hour storm by a volume that is sufficient to contain Second 100 year 24 hour flood applied tell (1U) days after cessation of the first will be met with this structure. Two successive 100 year 24 hour storms were applied, ten days apart, to this -quarry Pit L1VVU storage structure to insure there hCie 1$ sufficient eIt capacity. The 100 year 24 hour storm has a volume of 4855 acre-feet which would be diverted to storage in this pit. See Figure 4 for a plot of flow vet �S"U till[e into the pit. A ,7ecolld 1VV YUUL L4 UVUL storm would have a required storage volume of 4200 acre-feet in this pit. The reason for this can be seen in Figure 4, where at 29.5 hours into the storm the total channel flow is less than 3000 cfs, which is the maximum allowed discharge for this structure. Therefore, the Quarry pit could be full at this time and still be less than the maximum release rate of Structure 25 dam. From above the storage available after the first storm is 1603 acre-feet (6458-4855). Therefore 2597 acre-feet must be evacuated from the pit in ten days in order to have a volume of 4200 acre-feet available for the next storm. 6.4 QUARRY PIT PUMPING REQUIREMENTS Pumping is required to meet the ten (10) day drawdown of the Quarry Pit after a 100 year 24 hour storm. The pumps will be sized so as to be able to evacuate enough volume to contain the second 100 year 24 MAY, 1988 PAGE 15 Use data supplied by Nello L. Teer Company for the projected Quarry pit size. DATA GIVEN Desc Elev Area Pit Bottom - 35 (Below MSL) 14 to 17.5 ac Top of Pit 240 35 to 38.5 ac Min Stage Storage Curve Would Be: Elev (ft) Area (ac) Incre. Vol. (ac-ft) Total Vol (ac-ft) - 35 14 0 0 0 16.7* 537 537 50 20.5* 930 1467 100 24.3* 1120 2587- 150 28.1* 1310 3897 200 31.9* 1500 5397 232 34.4* 1061 6458 240 35 1338 6735 * Assume linear increase in area from top area (35 acres) to bottom area (14 acres) TABLE 2: STAGE VERSUS STORAGE FOR THE QUARRY PIT. I ME 0 ft, qft wom— ,', 10 20 30 40 50 60 70 : 5 90 TIME IN HOURS FIGURE 4.' PL OT OF FL OOD FL OW DI VISION A T THE QUARRY PI T STRUCTURE FOR THE 100 YEAR 24 HOUR STORM (P=8.08 inches) hour design storm as discussed above. This will require a pump capable of pumping 2597 acre-feet in ten days. The average rate that must be maintained for ten (10) days is 260 acre-feet per day or 131 cfs or 58,838 gpm. Pumping will continue until the pit is empty, which should take less than 20 days for complete evacuation of the 100 year 24 hour design storm. 7.0 COST ANALYSIS The estimated installation Costs of this proposal are: Outlet Weir $ 100,000 Quarry Spillway 400,000 Pumps 1,500,000 Total Installation Costs $2,000,000 Amortized over a 100-year period at the applicable rate of interest Ok percent), the average annual cost of installation amounts to Js Y V / , ! V V • LLe es trrilimateu annual cost of operation a d LLa-L to LQl ce A. $150,000, making the total average annual cost of this proposal $217,760, compared to 310,000 for planned structure 25. The average annual benefits of the proposed quarry pit operation amount to about $500,000. 8.0 RECOMMENDATIONS This Quarry Pit Alternative is recommended as the most viable in economical, environmental and safety terms. It is the least costly option by about 100,000 dollars per year and can perform as well as the originally planned dry dam structure. It alleviates concerns of environmental damage to Umstead State Park and does not appreciably impede channel flow. Safety would be enhanced as all risks related to a dam would not exist. MAY, 1988 PAGE 18 APPENDIX A \ ' ` CRABTREE.CREEK. CHRONOLOGY OF EVENTS CRABTR£S CREEK WA=HED PROJECT Wake and Durham Counties, North Cazolirna PROXE= SPONSORS Wake Soil and Water Conservation District Durham Soil and Water Conservation District City of Raleigh County of Wake (primary responsibility) PHYSICAL DATA Watershed Area 90,750 acres, with about 8,900 acres of this in Durham County. Population (1975) - 115,000 (80% urban). Cropland approximately 4,000 acres. Pastureland approximately 42,000 acres. Urbanland approximately 42,000 acres. Floodplain cropland approximately 250 acres. Within the watershed are: -- 70% of the City of Raleigh. _ 25� �f rile T�wZ ui Cry. All of the Town of Morrisville. A regional airport (RDU) . Part of the Research Triangle Park. Interstate Hichway. Rack Quarry. + A state park protecting nationally significant wooded areas. - Major ecnur-rcial and industrial areas. - Agricultural research farms. - A nationally recognized memorial forest. - Significant wildlife habitat, including wild turkey and deer range- - Part of the Triassic Basin. IMPORTANT DATES - May 7, 1957 - Major flood caused extensive damage to farm and urban property. - September 23, 1957 - Shull watershed project application submitted to N.C. Soil and Water Conservation Crannittee. - February 6, 1958 - Application approved by Soil and Water Conservation Service. - April 15, 1958 - Authorization for planning by Soil Conservation Service. - May 1, 1964 - Final approval of work plan by sponsors. - September, 1964 - Congressional approval of work plan. - September 25, 1964 - Soil Conservation Service approval for operations. - November 2, 1965 - Wake County voters, by a' substantial. margin, approved county wide watershed organization with power to levy watershed tax. Ild�.s 1 OC O r.T-L.. .... �+..—.. ....i �� 7 s watershed ....I, i�%aU _ ++a+% uauia�.�r 4vters approved a at MUJ '�L wS ,ru bond referencbm. _ - August, 1968 - Landrights carplete for fi•-st ocnstrvction. September 8, 1970 - First const-uction contract- awarded. June 8, 1972 - First structure acapieted. - 1973 - Two stow of 5 to 10 year frequency produced damages in excess of $10,000,000. Novenber 18, 1975 - Fo=nal agreenient between County of Wake and City of Raleigh allowing limited public recreational use of Structure 13. (Shelley Lake) May, 1976 - Final Envi==rental Impact Statement. July, 1981 - Conveyance of property rights to Town of Cary to allow development for public recreational use (Fred Bond Park). PRGUFL'T STATUS The project i.nwlves ccnst_-vction of eleven floodwater retarding struc=-es designated as Site Nine 1, 2, 3, SA, 11A, 13, 18, 20A, 23, and 25, and 3.2 miles of cha ne i zation work (see Project Map) . To date, Structures nmber 1, 2, 3, SA, 11A, 13, 18, 20A, and 22B have been c=pleted. Landrights acquisition for Site 23 has been earpleted and construction was begun in April, 1985. Annual flood darmge sho-u. r9 be reduced I— 0"M withems. A..— " all 11 Structures. $1,020,900 (6 struc==P-s) (1977 estimate) annual damages reduced to $175,800 (11 structures) annually. PF,C=- SUMMARY (6 /30 / 84 ) Site Per$. Pool Flood Pool Date SCS Spanscr Total No. Acres Acres Carmleted Cost cost Cost 29 64 5 21/76 $240,918 $ 92,039 $ 332,957 2 27 57 6/9/82 89,954 7,890 97,844 3 45 •80 6/2/72 117,999 13,594 131,593 5A 71 404 11/19/81 598,136 2,174,462 2,772,598 11A 45 118 7/17/80 381,286 561,164 942,450 13 53 143 5/22/75 476,292 506,153 982,445 18 22 77 8/22/73 242,481 23,812 266,293 20A 148 361 4/85 1,186,322 2,314,534 3,500,856 22B 56 94 6/9/76 296,117 173,714 469,831 23 519 1,157 (£stun. Costs) 2,550,000 2,750,000 5,300,000 25 dry 392 Channel 3.2 miles 1972 36,700 11000 37,700 Totals 1,015 ac. 2,947 ac. $ 6,216,205 $ 8,618,361 $ 14,834,567 CRABTREE CREEK WATERSHED STRUCTURE NAVES SITE NUMBER NAME 1 Sorrell's Grove Reservoir 2 Hatcher's Grove Reservoir 3 Hi -Fuse Lake SA Page Lake 11A Richland Lake 13 ;. Shelley Lake Coles Branch Reservoir 20A Briar Creek Reservoir 22B Lake Lynn 23 Lake Crabtree 25 Ebenezer Church Road Impoundment L �� •r,u� ••SSA' :1 i; .4 �. - � _ .' f ` iJ .,• •4 'PENDIX B,. rti r �{ 7 �-}4. ti �,�. Rl rry-r! jS' I r rl, •f•d' .6 t• f; :pr "�•' .. r ,1 ' R''�r� r .`io _I'• try eIt . / � : ,• 5l'' .k'•'>�i• � Vie, -� k, 'f r• tt • t 'i., ••w.1 ' '��1 r'F•.lf_1>5��:j�� t7,,,A� ti 1� _�'.•,r' ,1 •� � 1 �' '4! � ` 'µ ,�+rtti _- �YN �..1 F K bJ ' 4 t , '.�; - , t•,' • : �,,.. ti : r , ry by � ✓i[! , '.. 1 i f , Jli5 y�r,V n� -sy lrf �r�� Is �` 4 `1' :r i - --� •, ... - �y6: r, s f' � � �'.I . q r i r � • M • t' •� 1 „ • „ . , r .. t 1 jn 1- 4r -r1S r{••r t 3y '•r -• '14 `4�1'4.,/L 1�1 Fri f+F FA ,1.r1` 1, r.. ,� ti A t( ]� � '• ". :S r'' i f I `r' ,tij' 1„4 i•QY1t to � � � - 1\ Y. r s � +s r ' , r '� � i ir•1 r��ls�,!�ye ; � �•�- } r- t+�, y 'x , • s`t ^' _ ., 1 1 1 . - . �'�: 1 ; l^ ti r' ,1'r ��y,� rr r ; r � I i { , ' ? wa '' S' }. 1 - .. 1• ,' rL . •, - . fsty l✓ ti Ill�f, t`, r _ # 's- l W A' 1 e>�,F',� �S,tl���i 4�y�!{Ja 1�,� v,•s 7rd ,a � �t� }, i ,5. ,5i -1;. _ �'s •�t � �- -1 ��� 1°��zu'{�1'�J�r'•sryl•'{T�.f?�i � ` .1�r°rti` � l�� r�.,,� • %'.{ MAPr, ERSH ED +4,i' kr}•''.7.i'+<�fr `'Tf ,yr,,�d'r�', ;11 4 ; .. •111. ,, •. + f ..'1 1 u•1,' � F is i SUMMARY ANALYSIS SITE 25 - CRABTREE CREEK WATERSHED PROJECT DEVELOPMENT OPTION - NELLO TEER QUARRY PROJECT DESCRIPTION - The Crabtree Creek Watershed Project as planned calls for the construction of eleven (11) floodwater retarding structures positioned in series along Crabtree Creek and its major tributaries as well as approximately 3.2 miles of channelization work (see Attachment A). The primary purpose of the project is the provision of necessary floodwater protection to portions of western Wake County and highly developed areas located within the City of Raleigh. PROJECT STATUS - To date nine of eleven structures have been completed and are presently providing the function and effectiveness expected. The tenth structure, Site 23 - Lake Crabtree, is currently under construction and is approximately 90% complete. Wake County, serving as the primary local sponsor for the project, is in the process of gathering the landrights necessary to facilitate the construction of Site 25, the eleventh and final structure of the Crabtree system. BACKGROUND INFORMATION Site 25 Description - The dam for Site 25 as planned will be located off Duraleigh Road adjacent to the Nello Teer Quarry, downstream of the eastern boundary (Ebenezer Church Road) of William B. Umstead State Park (see Attachment B). The structure will control stormwater runoff from a drainage area of. approximately 15,890 acres Which represents roughly 26% of the controlled drainage area for the entire Crabtree project. As originally proposed, Site 25 will function as a "dry" structure. A dry structure refers to a dam that retains no permanent impoundment behind the embankment. Rather, floodwaters are impounded only temporarily during and after a significant rainfall event. After an accumulation of stored runoff has been achieved the entire volume of storage is released in a controlled manner to prevent downstream flooding. This type of structure provides for use of the entire reservoir area (retarding pool) for activities capable of tolerating temporary flooding. The temporary reservoir or impoundment area behind Site 25 during a 100 year storm event will encompass 390 acres, 292 of which lie within the boundaries of Umstead State Park. 4 Project Costs Estimated costs for development of Site 25 are as follows: Survey Appraisal Landrights Acquisition Utility Modifications Road Modifications Construction Site 25 - Cost Estimate County SCS 33,400 20,000 2,500,000 60,000 2,000,000 4,500,000 4,613,400 4,500,000 9.1 Mil. Total Estimated Cost * includes additional compensation for "full" conversion if necessary (Umstead Park Easement). ** includes modifications to Ebenezer Church Road if temporary road closing permit is denied by N.C. DOT. Umstead Park Issue - In order to facilitate the construction of Site 25 it will be necessary for the County to obtain a flood easement from the State of North Carolina over the previously noted 292 acre area lying within Umstead Park. In an effort to secure certain flood easement privileges over park lands, Wake County and State administrative representatives agreed to a specific plan action. This plan called for the joint financial participation of the County and State regarding the acquisition of approximately 97 acres, adjacent to Umstead, earmarked for inclusion into the Umstead system. The County's portion of this priority acquisition was intended to serve as mitigative lands necessary to fulfill certain "conversion" requirements as prescribed under current provisions of the deed for Umstead Park. Immediately following the acquisition of this tract the conversion proposed was forwarded to the Department of Interior - National Park Service for review and approval. Recently several questions have been raised concerning the environmental impact this flood control structure could possibly have on the flood pool area lying within Umstead Park. The National Park Service has requested that these concerns be addressed before an opinion can be rendered concerning the adequacy of the current conversion proposal. Alternate Option for Development of Site 25 - As a part of the evaluation process relative to these environmental concerns, alternative options concerning Site 25 have been considered (i.e. relocation, design modification, abandonment). 3 One such alternative which has recently received strong consideration is the possibility of using the existing Nello Teer quarry in lieu of constructing a standard type embankment structure. In general terms the quarry would serve as a large holding basin or detention structure. The runoff from significant storm events would be diverted directly into the quarry for temporary impoundment and storage. This diversion action is to be accomplished by the installation of a diversion structure or weir in Crabtree Creek (See Attachment C). Immediately following a storm the stored runoff will be evacuated via an elaborate system of pumps which will provide for a controlled release or discharge of accumulated floodwaters. The quarry will be pumped down in such a manner as to prepare it for any subsequent + �infa] i ..�1: rainfa] events . This concept is contrary to the original design for Structure 25 which called for a embankment type structure which would temporarily impound the floodwaters over a widespread area behind the embankment. With the quarry option floodwater would be stored within the limits of the quarry approximately 270 feet deep as opposed a relatively shallow depth spread over 390 acres. Utilization of the quarry virtually eliminates the temporary inundation of lands behind the dam subsequently eliminating the need for certain flood easements over lands within the Umstead Park System as well as privately owned lands. Listed below is a brief summary comparing the original design and the quarry alternative. Key components relative to the development processes are compared and briefly evaluated. Feasibility Study► - Following a detailed evaluation of the quarry option the USDA - Soil Conservation Service has determined that utilization of the quarry in lieu of an embankment type structure is soundly justifiable. Information regarding the proposed maximum expansion limits of the quarry reveals that upon its completion the quarry will have a flood storage capacity in excess of that originally planned for Site 25. Although the system of pumps that will be needed to evacuate the quarry is expensive, the Soil Conservation Service is estimating a significant decrease in construction costs if the quarry option is pursued. Preliminary cost projections for the quarry option are currently estimated at $2 - 3 million dollars as compared to the original cost estimate of approximately $4.5 million. The natural alignment of Crabtree Creek, the topography of the channel itself, the estimated flood storage capacity within the quarry and a significant reduction of approximately $1.5 million dollars in construction costs alone make this a very attractive and easily justifiable option. Landrights Acquisition - As originally planned Site 25 would require that certain landrights be acquired over approximately 390 acres. The quarry option eliminates the need for any flood easements or fee simple acquisition as there will be no significant impoundment of flood waters beyond the perimeter of the quarry. Landrights costs originally estimated at approximately $2.5 million would be reduced to a nominal fee as the Teer Corporation is prepared to donate the quarry to the County immediately following its abandonment. Teer plans to exhaust its resources at this pit within 3--4 years_ 4 Road/Utility Modifications - Subsequent road and utility modifications will also be necessary if Site 25 were implemented as initially planned. Said modifications include the concrete encasement of any existing sanitary sewerline as well as the upgrading of Ebenezer Church Road. Costs associated with these modifications are borne by the primary local sponsor, Wake County, and are currently estimated slightly above $2 million dollars. With the elimination of the embankment itself and the related temporary inundation around Ebenezer Church Road these modifications no longer remain necessary. Assessment of Environmental Impacts - With respect to the initial design of Site 25 and the temporary inundation of park lands, environmental concerns have recently become a controversial issue. Although the State and County have reached a understanding regarding the environmental issues, the National Park Service maintains that additional environmental concerns must be addressed before they will grant the conveyance of a flood easement over park lands. Such information is to be presented in the form of a supplemental Environmental Impact Statement. Even with the timely completion of a supplemental EIS there are no guarantees as to the conveyance of necessary easements within Umstead Park. N.P.S. could rule that the current conversion proposal is inadequate thus denying the flood easement so essential to completion of the project. This type of action on behalf of NPS would almost certainly force an extended period of litigation between local sponsors and the Department of Interior. The quarry option eliminates the temporary impoundment of flood waters within Umstead thus eliminating most environmental concerns. Additional Benefits - The proponed option r��r�-�Lu quarry o�Jt1UL1 features a few additional benefits which deserve mentioning. First, utilization of a pumping system to evacuate the pit after a significant rainfall will allow for increased control over the discharge of stored floodwaters. Second, additional flood protection benefits can be derived, particularly with smaller storm events, should this design change be implemented. Third, a regulated discharge of stored runoff could be used to augment flow in Crabtree Creek during extended periods of drought or low flow conditions. E SUMMARY - Overall, utilization of the Teer quarry in lieu of a dam for Site 25 is a very attractive design alternative from several aspects. The following table represents a brief overview of the characteristics of both development options. Development Phase Structure Design Landrights Required Landrights Costs Construction Costs Utility Modifications Road Modifications Environmental. Assessment Orisinal Design "Dry" Dam" flood easements and/or title to approximately 390 acres (292 lying within Umstead Park) estimated @ $2.5 million estimated @ $4.5 million $60,000 estimated @ $2.0 million highly controversial, will require supplemental EIS, will probably result in an extended period of litigation. Quarry Option "Retention" Structure all landrights (including quarry) will be donated by Teer Corporation to Wake County. $2 - 3 million virtually eliminates the environmental impact on Umstead State Park, less controversial, will require a significantly reduced environmental assessment. With this proposal it would appear that Site 25 could be built at a reduced cost of $2 - 3 million as opposed to the initial estimate of $9.1 million, a reduction in development costs of approximately $6.1 million. The installation of Site 25 would complete the Crabtree System, thus providing the necessary floodwater protection to western Wake County and Portions of Raleigh: The quarry option provides a viable solution to a highly controversial project and is currently endorsed by CDS staff representatives and USDA - Soil Conservation Service officials. Should the Wake County Board of Commissioners concur with staff recommendations it is anticipated that County staff will be directed to actively pursue this option by finalizing design and Landrights acquisition as well as addressing all related environmental concerns. l,- ,�\• FDA _Si63_AG �. t' •� - - ` 1 -.:.� � P +- r DA 73B6,AC.- = i-•�� { :ice �'�- f _'�� �'�,T _ �', - '� /"" a'1``��., i r�'\ •[-_1l•r'�,. -:M r :�%'-D%1:.219 AC/• � f_• 1 .�.. .... ... �pr1320 A� - li . �_�\��.. ,.� , \� � :.',, ,-� � J - � �• `j .' � '•T' �' �L1i-1i, % .J: j ,�-- j J � ..1 = D-A t•7E0 AC / : //.1 yi \`�1-'_ ''�"-r'��j •, ~ ,� Y, •`~ f •••`•' j �f 3 3A �iE SC AC. ��._:y,:'�= -`�_���' --- 'l� .\ ♦ �! D:7320.AG _ f,•�'—•—�t—•: �% ...` I �' �`• •' 1 _ 1 = PFORCT MAC , ` '1• ^ -�- CRABTREE CREEK WATERSHEDAIA ACV(�� DJFHAM AND M'a,(C COaNTXS y NORTH CwROLJNA . ... .:ram. •l �. . -. .. ....... ...... - _ n ^+.♦y_ t -.I. ✓�"� � 1� �[�'IffO wTR)17h1t •t: CRABTREE CREEK WATERSHED STRUCTURE No. 25 1l� Fpt'E�G j1 c0 Arl r RP n --- N LAL 0 l� J III (�I t -rw f 'z1sb-7 oL _i �I f fll -' A f i1J� '• - �\;\`,-< 1�.. �t` � r 11t, � -, y j3]yI � . _ �. .\_ * ��,,� � , .�� � S � yi "4 ��' _ �4I; � •� .� `\J�y. � J \; �4tjyF�' } � l _ .� "'�, -�' 1'l1 `J 1 II t ! + F` i IF 4 i i SEA TuRTLE INN 4 One Ocean boulevard Atlantic Beach, Florida 32233 (904) 249-7402 Fax: (904)2,47-1517 r li r 1 Neigl hors fight plans for quarry Continued from page t B - ulations because the pit was there before the area was zoned resi- dential. Company officials con- tend the exemption also applies to 99 acres on the south side of the creek, .which have large deposits of stone. But city leaders say opening dnotherquarry south'of the.creek is an illegal expansion :of the mining. The council fired a warn- ing broadside in September. urges oy resroems, ine councu passed a resolution alerting the company that the council intends to Pnforce tl!e zoning ,zoning The permit is contingent on the company's meeting local Toning regulations If both parties maintain their present position, we may be on a collision course," City Attorney Tom McCormick said. Wayne Phears, an Atlanta at- torney- for Teer, declined to give the company's timetable for open- ing the new quarry, but said the city's action will not alter it. In its permit application, a company official said-Teer plans to mine north and south of Crabtree Creek in the next 10 years. "Tcer's plans are no different than they have been — to mine the full extent of mineral resources on the site," Phears said. Phears said he is puzzled that Teer is encountering opposition from the council, which supports a Wake flood -control project that acquiring � e existing quarry. He said the council is protecting the interests of a small group of residents at the expense of the larger community that would benefit from acquiring the -quarry for free. Teer has offered the quarry to Wake County as a gift — but only if the company is allowed to mine south of Crabtree Creek. The City Council endorsed the flood -control plan last year, but included the caveat that it did not imply rights to open a new quarry, McCormick said. Meanwhile, county officials have begun design work for flood controls at the existing quarry. But they are adamant that they are not working behind the scenes to pressure the city to !et Teer open another quarry. "The actors have attempted to pull the county into the battle," County Manager Richard Stevens. said. `We have resisted vigorous- ly.,, The existing quarry is 400 feet from the nearest house. The pro- posed quarry . would be 750 feet from the nearest residence, Teer officials say. Because of the in- creased distance, the company does not expect to change its blasting procedures. Residents fear blasting at a new, quarry would disrupt their lives " and damage their homes. They would like to settle the dispute before the first fuse is lit. Still, most n.rticinanfs the dispute will end up in court, Whether that occurs before or after Teer begins miring new ground remains the question. "We are now in the city limits of our state's capital ,and it is time to put an end to this nonconform- ing use," Heaton said. "The land surrounding the quarry is all residential and it's time that the residents get some peace." , Hayes gaIle theamenihis watch,` f}v0 bracelets and his wallet con lhining $300, according to reports found a car matching ; •°�'Officers R Nissan's description in Carr born soon after the robbery and arrested three Durham men. A fourth man in the car was not thought to be involved in the rybbery, Thompson said. f1 Arrested were Carlos Toraln j 2P, of 17D5 Collier Drive; Charlie ROi tJunior" Artis, 29, of 3230 Jackson t.; and David Lee Marley, 20 ias A&eal Jamahal Lunsford, of k6 Kent St.'Artis works as a cook at Meadowbrook Manor on Mount Sinai Road and Marley is a t r student at Durham Technical In Aitute• according to the arrest report. Jewelers and Silversmiths Pst W hed 1881 ' Certified G-1.gL— • AonA— Gem Society Cameron Village in Raleigh, North'CaroU— • Phone 919-832.5571 . ------------------*— — [ would like Specialty of the House Recipe Book(s) at a cost of 18.95 each. Specialty of the House Recipe Book (each) $8.95 Postage (each) 250 N.C. Sales Tax @ 1.06 (each) + 54 TOTAL. (for each copy) ' $11.99 (Number of Copies) x Total Amount enclosed $ NAME :LPLEASEPRNn ADNESS MY ST zi . . ` ' ENONE .. .. ` Y Plans o i new y �" ti � k i 4P pit T..,eer against' city By WADE RAWLIN . Staff writer RALEIGH --- The first-time Jill Rurngarner Heaton's daughters felt the blast, they fell to the ground and put their hands over their heads as they were taught in earthquake drills in California. It wasn't an earthquake, though; it was life as usual for several hundred Duraleigh Road residents whose floors vibrate routinely from dynamite blasts at the nearby Nello Teer quarry. Wow n ctnto nArrnit thnt wmild } y - r �„ - t allow Nello Teer to dig a second,ik� 'l quarry at Crabtree Creek has. h � rekindled concerns in Oak Park and Laurel Hills. Raleigh City Council members are plotting legal strategy to stop it, "The neighbors are, somewhat". nervously watching,' } Heaton said. "It's definitely a tense atni&.. sphere, A quarry is really very+ .4.4 incompatible with residential) neighbors.77 w Nello Teer operates its quarry- North of Crabtree Creek under an '-'i exception to Raleigh's zoning re =:.�I { See NEIGHBORS, page 3B i nompson saia. +Although the victims and suspects were acquairio-0 , Thtthpson. said that the case is not "the traditional acquaintance -type rape" -for several reasons. x . In a typical case,only two people are involved and the victim and suspect know each other and may be. dating,. Thompson said. Police think the two women met their attacke' rs Saturday night. Police would release only limited information because investi- gators are still interviewing the victims and'talking to suspects and passible witnesses, Thompson said. He did say, however, that neither the victims nor the suspects are students. ` -, The women met their attackers outside Chapel Hill shortly before the incident, Thompson said. They then went to the apartment at Walden at Greenfields on U.S. 15-50I, which police thinly was rented by one of the suspects. The rapes occurred about a.m. Saturday, according to reports, but the entire incident lasted several hours, Thompson said.. "I would think that there wa&a' -good probability that they were not free to leave at any time," he' said. ' Police would not'say how the women escaped, but said that they bath reported. being raped to a separate -agency, which referred fhe ease - t o the Chapel Hill police Sunday. Ik NEWS & OBSERVER B"i !! - THURSDAY, OCTOBER 13, 1994 vuarrynei nDors ask...-cit. to ue, tt _ aWake Northwest Raleigh residents g Count wants to use y council to settle the old controvert the cannot ex ihd U City At- y p y Ijl2�tl�Z! li# i"I7 ',37 �' `' _ don't Want the leer Co. to Teer's existing pit to [rap storm- water in the event of a major Sy once and for all. "We want the city to push for' torney Thomas McCormick said . 'Wednesday ixr�9rj':Sfila dig a second on Crabtree Creek flood that other- legal clarification, instead of just McCormick said he doubts a '! pit Duraleigh Road. wise would submerge major roads allowing them to creep across the judge would lake the case unless and inundate creek -front property creek and continue to industrial- Teer begins quarrying south of the 9YMATPHEW EISLEY throughout Raleigh. ize the site," said .lilt Heaton, an creek and city inspectors cite the sTA W M Teer says it needs to open a new Oak Park resident and neighbor- company for it, forcing a legal ' pit across the creek first so it can hood organizer. "There's a fear confrontation. " RALEIGH — Northwest Raleigh continue to do business. It has the that there will be a big hole there Should the city sue, Tecr lawyer residents are fighting a compa- required state mining permit. before anything will be done." Ward Nye said, "I'd feel comfort- ny's request for governmental That's the last thing neighbors The flood control plan has able with the case." blessing of a second rock quarry in Laurel Hills and Oak Park washed up'an old disagreement, Raleigh's City Council warned, next to Duraleigh Road. want. They're pushing the City centered on whether Teer has the Teer two,years ago that opening ajh in a recent letter to city and Council to take Teer to court to right to expand its operation to the pit south of the creek would-r Residents along Duraleigh Road don't care to have another Teer county officials, the Teer Co. said it wants their OK this year to keep it from opening the second quarry. south side of Crabtree Creek. So far, the city has been on the violate the land's residential zon Py_ ing — a classification the city'n"", Quarry; shown here, near their properties. -' •' complete plans for'the transition Sixty of the neighbors met Tues- neighbors' side: __... _.._..,-......�. _,.....: •^Phe riW. —ifinn is still that Srr 01-2V enra 5B i ZB '�{�p�` Try, l l lJl ll 11�111.J THE ND'S S 6MEHv�e . THURSDAY, OCTOBER I ill 994 ' Good rnaaners can . take ou far y and save y our face id 1 ever tell y'all-about the time to return to the right side of my face... - Poor table manners, folks, is a national 'slice butter or dip gravy.'In fact, I think toothpicks. Or brooms. `my Aunt Lot shot me? _ I ' Then I started laughing. No, she hadn't I crisis. But you don't have to take my word the bell that opens the gate to hell is not a Which got me thinking: What is the f Well, at least I thought she had. knocked me senseless. I was just so glad far it. Oprah, that national�arbiter of bell after all, but a loud, obnoxious burp. proper way to get rid of a piece of al- li! - -See, she was from up North = - —. to be alive after that what's important and what ain't, liad a . - A businessman once gave me some ready-beenporkchop.stuck in iWashington —and was visiting us, her r - horrific sock on'the whole show dedicated to good and bad good advice, after I'd asked for a loan:. your teeth? Do you swallow it? Spit it out?• ,country relations m Roekmgham, for the t. _ _ jaw. For the longest manners. - : ' Never let anyone know you're broke, and '.you Askfor a doggie bag and take it home for ;summer. Somehow she goi ii inio her . head that she'd teach my.9-YZ-eld self !propere tiquette —the correct knife and t lime afterward, f 6{�''/�'�� .would duck every time 1�� :she entered a room _ Now, f am no Miss Manners or.Letitfa • Baldrige, a couple of prissy busybodies who spendtheir days worrying about can go far with impeccable [able manners. Accidents will happen, though.- Like when I dropped my spoon and a midnight snack? - - I went to dinner at a pricey restaurant recently with a very rich businessman. .: v.,.., ...- and feet on the table, how to sip soup �� And 1 haven �., .:, a- i ;.. 2y about creamed corn r.,,r, .,,c „apnu, �, � .,� p,ac � ,,, your collar or on your lap. I've never giv-.: splashed soup on the',.... a......15,roxt to me at lunch after hearing that my pal, ..,......a.,..,bows T. Bass look polished by comparison - c� iwithout slurping.' •- since. `. ' en such inanities asecond thought. Shoot, , WTVD-1 l sportscaster DwayneBallen, is Right about the time he cut loose with a '- $ On this fateful day, I was hunched oveim, UU .But I'll tell you one - U.•ii�i�- .I used to think a person was pulling on .. leaving the station.- . - belch that sounded like the foghorn on an ;elbows on the fable guarding the plate the .Thing: Whether or not � - SAUNDERS airs if he just wiped off the top of the wine �. There are three things I can think of ocean liner, I vowed never to be seen in -- nvay you've seen inmates do in i million I she was in the room bottle before passing it on. that should be done in privacy. Modesty public with him again. But when the wait. :prison movies. (Me, I can usually tcli ii a tfellow has been a guest of the state: justby - - (room, hell, the state is . more like it), fnever let my food gel near But I've changed in my old age. Now I -,know there has to be a special place re prevents me from mentioning two of "them. The third, though, is picking your er arrived, my companion did something; that changed my mind — briefly. He watching him cat.). - ' 'the e.dgebfa plate again. '. - served in hell - or at least on thefront ` • teeth. It used to be that only the most . reached for the check. • I admit my creamed corn was perched No way am I championing better eli- roivof a Michael Bolton concert— for common, low -born person would even Unfortunately, he only wanted to tear -perilously close to the edge of the plate, quette'through child abuse, but it is obvi- people who talk with their.mouths full of a 'think of employing a toothpick — or the off a piece to dislodge some chicken from his about to tall off. I saw it: but before I ?us some people could benefit from hav- half -chewed piece of pork chop; which strawfrom a broom — to publicly dis- teeth. - could push it to,the center— POW! -she ing had an Aunt Lottie or somebody who they invariably spray onto your plate.; Or 'lodgi �ineat that got stuck in his or her - Got a tip for a story? `Kant to talk to. sof me. 1 heard the blow -before I. felt it, ince it took a few minutes for the feeling. was interested in leaching them proper... I table manners. - I who use their torks to spear a piece of roast beef from the serving platter or to teeth.�Now restaurants actually encour- I ' age theabominable practice by providing Barry about this topic — or an bin I else? Call him at 836-2811. 9 r J '_k-..'QUARRY' CONTINUED FROM PAGE 1 S gave the land after Teer already V TT ►{VM But the city has grandfathered the northside pit because it exist- ed when the city's planning juris- diction first encompassed, it in' the 1970s. ';r tl+at +hP sntith- side quarrying should be . grand fathered, too. This summer the company rebuilt old sediment -cal-. lection ponds there, which it con- siders extensions of its. mining operation. The company can keep digging, out rocks in the existing quarry for another 25 years, but it would like to switch sites soon so it Can let the county use the first pit, Nye said. ' The company has about 64 million tons oIL f -Lone ►GLL, ind %A.ulr, both sites. The northside pit al- ready is. deeper than sea level.' The conflict puts Wake County in a bind, because it wants the existing Teer pit for flood control- The News & Observer but doesn't want to get involved in the zoning fight. Ruleigl1. w nntc; to nrntect, the neighborhoods - it let spring up Around the quarry, but the city may not. be able to stop Teer's expansion. - "If there is. any quarrying al- lowed on the south. side, these neighborhoods will be made unin- habitable," quarry neighbor Anna Wooten -Hawkins said. ` Council members Paul Coble, Mary Watson Nooe, Charles Meeker and Geoff Elting attended the neighborhood meeting' Tues- day. The council's Public Works Committee plans to discuss the matter Oct. 26. Thelbree-member committee will ask to tour the site, Meeker said. Teer officials say they have the right to dig a'second quarry, but they'd like to .work out a flood - control agreement. with Raleigh and Wake County. A federal program that could help fund the, $3 million flood - control project is winding down, county and Teer officials note. "It's a hell of. a chess game," said Don - d'Ambrosi, executive vice president of Envirotek,. a Raleigh land -planning consultant working for Teer. "It will be a crap shoot if it becomes a legal confrontation, because there's a lot at stake on both sides." ROBERT M. WILEY JR. NEW YORK — Robert Mason Wi- �y Jr:, 39, died Friday, Oct. 7, 1994. e is the sun_ of Mr. and Mrs' Robert i. Wiley of Rocky Mount, N.C. and randson of the late Mr. and Mrs. rancis E. Winslow, also of Rocky ►aunt. In addition to his parents, he is )rvived by his companion, Gilbert ole'of New York City; sisters, Mar- Wfley Kennett of Durham, N.C., elen Wiley of New York, N.Y:, one lece, Katie Bennett; aunts, Mrs. A ion Sobbitt of Rocky Mount, N.C., irs. Oliver Crawley of Raleigh. .C., Mrs. Wroe Lynch of Brackett - Ile, Texas; uncle, Dr. Francis E. linslow of Raleigh, • N.C.; many wsins and friends. He graduated from The Episcopal igh School in Alexandria, Va., in 773, Columbia University in 1977, id'the Columbia School of Journal- m in 1978. He was the co-author of any books, among them The Prep- r Handbook and, more important - Inside Oscar: The Unofficial His- ry of the Academy Awards. He also as the author of many articlesin, agazines and newspapers on sub- cts connected with films and re- ews of videos: In lieu.of flowers, donations in his CHARLES F. KOLB June 24, 1914 - Oct. 12, 1994 GARNER —, Charles Frederick Kolb, 80, a retired professor of Histo- ry and Political Science at N.C.S.U.. of 313 Loop Road, died Wednesday. Memorial service 2 p.m. Friday at Bryan -Lee Funeral Home, Garner. Surviving:. wife, Leah Myatt Kolb; daughter, Carol Kolb Greene of Cary; sons, Charles F, "Kalb Jr, of Berwick, Pa. and James. Lawrence Kolb of Kittrell; brother, Dr. Law- rence C. Kolb of Albany, N.Y.; four grandchildren. Visitation 1-2 p.m: Friday at Bry- on -Lee Funeral' Home. In lieu of .flowers, the family re- quests that contributions be made to Hospice of Wake County, 4513 Creed - moor Road, Raleigh, N.C. 27612; or to a charity of one's choice: CHARLIE FRANKLIN EARLEY - WAKE FOREST — Graveside ser- vice 11 a.m. today Bethany.Baptist Church Cemetery. Service by Bright Funeral Home. OLIA BRYANT ZONES WAKE FOREST — Funeeml 2 N.I I F• today Beulah Church. Burial, Roles- ville Baptist Church Cemetery. Service by Bright Funeral Home. HENRY D. HARRISON JAMES OLLIE MASSENBURG J WAKE,FO.REST—Mr. Jp mel-- lie Massenburg Jr., 51, of AI N. Ai %n Street, in Wake Forest, N.C. expired on Monday at Wake Medical Hospi- .tal in Raleigh, N.C. The service wilt be `professionally. conducted on Friday at 3 p.m. at Friendship Church in Wake Forest, N.C. The. family will receive 'friends from 7-8 p.m. on Thursday evening at Feggins-Feggins Funeral Chapel- in Wake Forest, N.C. Surviving: wife, Eleanor _M_ rrccen_ burg of the home; two sons, Anthony Massenburg Sr. of Raleigh, N.C.; James Massenburg I I I of Wake For- est, N.C.; three' daughters, Angela Brodie of Wake Forest, N.C.; Mor- zurika T. Massenburg and Marzurri- ka T. Lucas, both of the•honne; one brother. Ale-mander Mhysenburrt of Wake Forest, -N.C.; grandmother, Lydia Hayes of Wake Forest, N.C.; seven grandchildren; and a host, nieces, nephews other relatives and friends. Professional arrangements by Feggins-Feggins Funeral Services Inc, in Wake Forest, N-C, , ANN "SUE" W. HUMPHREY RALEIGH —.Ann "Sue" Washing- ton Humphrey, 85, of 6500 Litchford Road', died Wednesday, October 12, 1994. Funeral ,will be • held 2 p.m. Friday at Millbrook United Method- TEER GOMpANY P. O. BOX 13983 RESEARCH TRIANGLE PARK, NC.27709-3983 October 5, 1993 Mr. Tony Sample NC Dept. of Environment, Health, and Natural Resources Land Quality Section P. O. Box 27687 Raleigh, NC 27611-7687 Re: Blasting Complaint Crabtree Quarry, Wake County Permit No. 92-03 Dear Mr. Sample: Please find enclosed Vibra Tech analyses for blasts dated July 30 through August 12, which includes the shots immediately prior and subsequent to the August 9, 1993 blast which Ms. Gates rriiacti nnar� The 1ii rrhPet rrrniinr� Sri hrati nr1s for these hl acts :•.^, — "1... .10 ips, and the highest air blast reading was 113 decibels. Also enclosed are the field blast reports for the shots in question. Should you or your staff have any questions, please do not hesitate to call me at (919) 380-2615. SSE/dg Enclosures ADMINISTRATION ACCOUNTING TEL: (919) 380-2600 TEL: (919) 380-2530 FAX: (919) 380-2747 FAX: (919) 380-2578 Sincerely, TEER COMPANY (f.k.a. Nello L. Teer Company) Steven S. Edgerton, P.G. MATERIALS MATERIALS CONSTRUCTION EQUIPMENT (OPERATIONS) (SALES) TEL: (919) 380-2610 TEL: (919) 380-2630 TEL: (919) 380-2700 TEL: (919) 380-2750 FAX: (919) 380-2616 FAX: (919) 380-2616 FAX: (919) 380-2733 FAX: (919) 380-2755 0Y1113RA--Ti1mECH 377 Carowinds Boulevard, Suite 112, Ft. Mill, SC 29715 The Vibration Monitoring Experts 803-548-3066 FAX 803-548-3093 September 8, 1993 Mr. Kenneth Kennedy Nello L. Teer Company Crabtree Quarry Post Office Box 52039 Raleigh, North Carolina 27612 Dear Mr. Kennedy: The following report contains the original seismic data from blasting operations associated with the Crabtree Quarry. A total of four blasts, dated July 30, 1993 through August 12, 1993 are included in 'this report. The maximum value of the recorded peak particle velocity for this series of blasts was 0.10 inches per second (ips), significantly below the established criteria for ground vibration as recommended by the United States Bureau of Mines (RI-8507: November, ryy ,.. , a -a r,.,,,,, �kn Wn�r dated TiOu 3fi 1993 and Ai gust 9; 1993, 1701J). lliis VaIUC, re%vrucu 1LVlil LAL. V. & j. .1 ., v_ represents ten percent of the allowable vibration limit as stipulated by the North Carolina Mining Act of 1971. Recent studies into the effect of ground vibration on nearby structures has proven t1he correlation between particle velocity and frequency in assessing the impact of blasting. In order to properly assess the effect of the blasts included in this report, Response Spectra Velocity Profiles (RSVP) have been performed on each blast record. The RSVP is a computer derived simulation of the response that a typical structure exhibits when exposed to the recorded vibration waveform. Response spectra analysis is a powerful analysis tool for diagnosing potential vibration problems before they actually become problematic. Response analysis, such as that utilized in the RSVP technique has been recommended by the United States Office of Surface Mining as the most effective method of assessing the impact of blast vibration on nearby properties. Response analysis has been performed on each vibration record associated with blasting operations for this time period. A copy of the associated data is graphically represented in this report: A review of the RSVP data shows particle velocities well within the recommended limit for all frequencies between 3 Hz and 40 Hz for all blast events included in this report. In addition to analyzing ground motion, the sound levels produced by the initiation of the explosive charges have also been reviewed. The maximum recorded air blast level for this series of blasts was 113 decibels (dB), recorded from the blast dated July 30, 1993 and August 9, 1993. This value translates to a peak overpressure of 0.00131 pounds per square inch (psi). Since even a poorly installed window glass can withstand a pressure of 0.1000 psi, it is evident that the air blast associated with these blast events posed no threat to nearby structures. Based on a review of the response spectral analysis of each blast vibration record and the comparison of ground vibration and air blast levels with all applicable state and federal vibration criteria, we find no evidence that the blasts included in this report pose any threat to properties located adjacent to the quarry. Should you have any questions or require additional information regarding the contents of this report, please do not hesitate to contact me at once. Respectfully submitted, Vibra-Tech Engineers, Inc. (�Vv U` J A. Rodgers Area Manager Geologist/Seismologist JAR:fv nit crabtree 7/30.819 Suite 112 - '_�t3U3=54t3=30�ir;' Ft. MITI, SC 29715 _ 1 B A S T A A S E SA O G R A P H D A T A Client Job La unto �_�•} L/ ` r.� Blast No. —ev? _— Time I '_/ Exact Blast location No. of Holes ._/ 0 Diameter � � in. Avg, Depth _ _ ft. Subgrade ft. Spacing 11 it. Burden _7- tI. Avg. Stemming Make & Type of Explosivess- `� lbs. �!JGL(r SS Ibs. jz� Ibs. Total Explosives Seismograph No. -�71 Exact Seismograph Location Delay Make a/jJS- 1 j::_6 MS , ,S- ailsell yams- yes Delay Type & Nos��� � Min. delay period _ l/11 Q ms. Max. Ibs./delay period Ibs. Blaster Ibs. Weather tbs. Wind Direction & Speed Seismograph Distance & Direction from Blast _ Peak Overpressure 1/, 3 —_ dB Meters (Peak Particle Velocity__. f/0 _ips Remarks: Vibration Analysis by: lbs. Everlert Only Range/Gain Setting �C/ ips Trigger Level ips Operator Q�%%atee _') Cassette No. Vibra-Tech Engineers, Inc. Date: ,;;,: Blast Diagram NELLO L. TEER CRABTREE QUARRY Seismometer at WEAVER & KILKENNY Blast 34 Date: 7/30/93 Time: 13:18 Instrument 7171 0.0014 Airblast = 113 dB 0.0000 -0.0014 1 0.0 0.2 0.4 0.5 0.7 0.9 1.1 1.3 1.4 1.6 1.8 0.25(- Transverse = 0.10 in/sec 0.00 -0.25 i - - 0.0 02 0.4 0.5 0.7 0.9 1.1 1.3 1.4 1.6 1.8 0 25 Vertical = 0.05 in/sec 0.00 -0.25 1 1 1 1 0.0 0.2 0.4 0.5 0.7 0.9 1.1 1.3 1.4 L6 1.8 0.25 Longitudinal = 0.08 in/sec 0.00 -0.25 0.0 0.2 0.4 0.5 0.7 0.9 1.1 1.3 1.4 1.6 l.8 0.013 Transverse 10 50 Response Spectra Vertical 1.0 0.1 0.013 10 vibra,-tech, engineers 50 1.0 50 $t1ftA 112 vw-two-aver. Ft. Milt, SC 29715 B A S T D T A E I S ., nn O G R A P H D A T A Client Job Loi Date Q — ._1 Mast NO. c�t1 Exact Blast Location lime No. of Holes Diameter 3 ,- in. Avg. Depth _ c� ft. Subgrade _ T f1. Spacing �� ft. Burden ft. Avg. Stemming -- 4'tt. Make & Type of Explosive; / �v lbs lbs. lbs. lbs lbs. Total Explosives Cv �v _ lbs. n r A / Seismograph No. . /-J / / Exact Seismograph Location Seismograph Distance & Direction from Blast _ Peak Overpressure dB Meters { Peak Particle Velocity ips Remarks: Vibration Analysis by: Delay M a k 1;s- `/- D b Delay Type&Nos. 4EC42 .__... Min. delay period sue!//_�ms. Max. Ibs./dela period /-' 4 CF- lbs. U la Jll.il Weather Wind Direction & Speed Everlert Only Range/Gain Setting_._ Trigger Levei --- ips, Operator _ Cassette No, Vibra-Tech Engineers, Inc. Date: :�: Blast Diagram N Ft. Mill, SC 29715 B A S T D T A S E S M O G A P H D A T A Client cz L o L . /Ec 2 .., PAN _ Job Location_c/,m 2 2Aari+DE��2�f Date 919 3 Blast No. ,3(C2 Time Exact Blast Location 5,6NC�{ r No. of Holes__ Diameter 3 ��- In. Avg. Depth 'z g It. Subgrade 2' fL Spacing Make & Type of Explosives: 1 L � �oosT��S 4 c7 -p6-L 1 T L Al I Burden ___ ft. Avg. Stemming ra / ffl ft. Delay Make �,+;s �'? , b ms 25, 3 a was tPo,_ L10 „" _ 9 lbs. Delay Type b Nos._-Z --LC r,?PS- - _��_� lbs. Min. delay period 5- •2o S01bs. Max. lbs./delay period 7 I .Ibs. lbs. Blaster L� L / Pz5C0 r , 7�_ lbs. Weather Total Explosives lbs. Wind Direction & Speed /V02 l/ - E;verlert Only Seismograph No. rl / �f Range/Gain Setting _ �� `^� ips Trigger Level Exact Seismograph Location s'&1_4 VE K IL ips, Seismograph Distance & Direction from Blast 1000 FeGT Pe ak Overpressure , 11 3 __dB Operator M IIA+ C Meters Particle Velocity ips Cassette No. Remarks: Vibration Analysis by: Date: Vibra-Tech Engineers, Inc. 'k. Biast magr a1m1 ._..,..z":'!.`.��...�r.kv��,..s�``'K'.v .'ter �•hu... Idello L. Teer Co. Crabtree Quarry Seismometer at Weaver & K111kenny Blast 36 Date: 8/09/93 Time: 13:08 Instrument 7171 0.0014 Airblast = 113 dB 0.0000 -0.0014 - 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0.25 Transverse = 0.04 in/sec 0.00 -0.25 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0.25 Vertical = 0.10 in/sec 0-00 -0.25 _ 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0.25 Longitudinal = 0.07 in/sec 0.00 -0.25 1 0.0 0.2 0.4 0.6 0.6 1.0 1.2 1.4 1.6 - 1.8 2.0 0.01� Transverse 10 50 Response Spectra Vertical 10 50 vibra-tech engineers Long3LUU111 a1 0.1 0.013 1.0 50 Ft. Mllf, SC 297 B A T D T A S E I M G R A P H D A T A Client Job Loc Date —K7-1v — Blast No. Exact Blast Location _ q�-40d4o No. of Holes _J F Diameter_ in. Avg. Depth Spacing __._!J ft. Burden 7— __ it. Avg. Make & Type of Explosives: 7 �3d/ lbs. .c Ie--L-LG_.f�y�a Ibs. eJQd 4 lbs. lbs. Ibs Total Explosives Ibs Seismograph No. �' Exact Seismograph Location Seismograph Distance & Direction from Blast _ Peak OverpressuredB Meters Peak Particle Velocity Q E —ips Remarks: Vibration Analysis by: Time I. J `% ft. Subgrade-.._ignft. Stemming ii. Delay Make/�ISI��`L1t�lt!-S=5!p1t1�/Q_.Q Decay Type 8 Min, delay period r l�� — ms. Max. Ibs./delr y period _LL¢ Ibs. Blaste Weather Wind Direction & Speed •vim " �� Everlert Only Range/Gain Setting r_lt! ips Trigger Level "'rips -- 0perator Cassette No, Vibra-Tech Engineers, Inc. Date: *� Blast Diagram Nello L. Teer Co. Crabtree Quarry Seismometer at Metcalf & Oak Park Blast 37 Date: 8/12/93 Time: 13:33 Instrument 7171 0.0007 Airblast = 108 dH 00000 -0.0007 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0.25 Transverse = 0.08 in/sec 0.00 -0.25 1 0.0 0.2 0.4 0.6 0.B 1.0 1.2 1.4 1.6 1.8 2.0 0.25 Vertical = 0.03 in/sec 0.00 -0.25 0.0 0.2 0.4 0.6 O.B 1.0 1.2 1.4 1.6 1.8 2.0 0.25 Longitudinal = 0.08 in/sec 0.00 -025 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0.0 1� Transverse iv I'll Response Spectra Vertical 1.0 0.1 vibra-tech engineers 0.013 10 50 GENES NEL,LO L. TEER COMPANY., A MenA,r 4 y'IHIE RE4ZER GROUP Bleat Repor J. Proect: 4- 4242a-- Location j Bela. No. 1 0 Shot No. Time Fired Scalfe• Distance Particle Velocity 1/0' ;'.'.''`'Dist, to Neighbor L's."elay 774 49 4� I.TypeKDck 7. Sub -drill .77 2.,-1-,;Type- Drill Bench- 8. Height of Be ;2 f. 3 "::,)3it Size/43,L�K9- Stemming T 6 o. 11oles N 10. Burden 5., -,-Total Drill Ft. 11. Spacing 12, Open.,or Buffer r:.7 EXPLOSIVES CAPS Type' Delay/ho./K Deley/MaJ FL rL_ 1*7-f Y,2 J Zez Ta4l' Fonda lJons CY or Powder Factor &0 .jVi BAC ON V. 74- ralir�_T_�T wars I1W-4 WEATHER DATA" JrInversion Wloiy 4,000 f L (AGL) Base 1 t 1 ` Top 3 2 Temperature _W wipe out inversion , Expected High 14 + C Tern perature at time of shot ZL Winds; '",.Surf/ace• I 51000 ft. 009 ft. 10,000 fL tj 4 Superintendent I, V F NFLLO L . TEER COMPANY, A Mrrrrhrr r f' HE BE aR GROUP Boost Report r' 4 LigD%�TG Location: Ate; ShotNo: "-��s—�,-.-.—,, Sei& No. 7z Z/_ ._ Time Fired of 'I <? Sca a"Distance Particle 'Velocity" 'ia.Neighb.or - tQr,42 Max. Lbs./Delv. ; t s Mypd„ Rock � 7. Sub-driiiing __.�,,,�.— ,:'I•" 8. Height of Beli�h , t .: Bit;Aize • : 9. Stemming;' "Ole$ . �'' —10. Burden,,i,ti;,.,, ��,,r�► Drill Ft., ,y ...� ° J_21. Spacing ., , . , ' ►.: ' h •r, 1� • • EXPLOSIVES pourift '';2 : a ' {�' Icy _' .,. . � r . � •- .77 .Tpta..Pounc it' �otaj Taas ar CY .. � I 'Tow¢er. 1~' cto 1Z.'. �... L RACK A EN ,i Adi�1q era ood- it-P - i WEATH Inve;l9q `#glow 6,000 ft. (AGL) r ` 2. ',•r,Temperature to wipe out inversion FPO Expected Tjemperatur6 19time of shot Z3 F4 � �jiy�: RT �AL�6 : ' '+ x � • Surface 'Fareman.. ' 12. Open or Buffer' , IPA •CAPS DWay/No.lFL ey TATION , ;;;r NOISE''' �! . oor ER DATA , + I , ? i t �a;'•?� c`. :...,. N Base Top:>.xu`} 1, 'h� ` ,•� i � ' Y { ..i .. .. , � �w.)S�•1i 4..y t it >f tti _� LL !!gyp i�.j 6,000 ft, / ] Sir . i 1 1Tyryi �•V,•i i 44 i i �/ , r.� �1 .r . .r •1 10,000 ft. Superintendent's :'..� f m../sots. �■MMw wr�w....r...ir. ■u.rr.rurrf.■ srrr...a./rrw.■ s...a...,..wwow r...r..rrmsauw ■rraaorw...rr. oiwiw.w.0 w■/. rsw..s.mu .rrw. rusawwur rrsu rh.�m u..a..w.. w...srr.r...i.r o■►.u. wow/. i�.•w/••aa■ ■orw ur•.:Yi►.w. ruma iawrmr...a/wits ro.a wwo..r. n rr....r.a..ram► ur...uo ■irr. NELLO L , TEER COMPANY A Mradprr of' T HE BEAaR GROUPsl ,µ.,r ,, X, $ . aot Report r=ojeCL: (1 ""t Location: (`�! Vote., Shot No. 7 Seis. Na.. T/ 7z _ Time Scale • "�;Distance Particle Velocity L• t r r. ,'Ilist, to Neighbor //DO Max. Lbs./Delay.. 771 ...Type.Rock 7. Sub-drillingPri TF _ T* Type Drill 8. Height of Bench ;$ 9. Stemming Holea`vna610. Burden ,Total Drill R. 11. Spacing /� ?' t h ti f r_ r..r1Ll HQIi�'S 12. Open or $uf#er -�* i ' 'S- y . IA ',RA51.5•. tL ~ 30 BAC A FftA ATION NO A4.i Ai Vero G a oar ud-Xo 77 , .1 WEATHER DATA ' ° r %; �m it fs a 1. .Inv erei it below 5,000 ft. (AGL) Bane 14< i { ,; _.Temperature to wipe out inve Son % 1 Op 3: L' Expected High :.+4. Tent er tfar e •et time of ahot - F 8 Surface---: �— 5,000 ft. 4.000 ft. arman ' ✓` Superintendent 3 EXPLOSIVES I r a vQ Typo' ._ pou"s Dolan/No./R 3o ^51e)d = .'a ' r: Total. Pound$+ ^.,,`�-3 a Tons Z.1 otsl ar CY DEPARTMENT OF NATURAL RESOURCSES.& COMMUNITY DEVELOPMENT LAND RESOURCES DIVISION LAND QUALITY SECTION TELEPHONE LOG Sheet Date �� a County Cali received )C Call placed % 1. Project: ( Q-L.r 14wv 2. Conversation with: CY'dawnuma) Q. s 3. Content of conversation: fV.,VS&-vtct� C44- 11t0` '_41'r- mtws . 4. C .✓� 4Ce-.. a � Y-s'f+�-� _ _ 4' %«�gGe°c�,,�c cY T �ere jr Ut"� ra 1 .w .5.� +F cX %Q firs '%,' r' c �r V �✓'l �w� 11C i b� �-ty k lit- 4A" 1,01 0.4c 6 mod,•- rC.�irC.so.�� `f-ikP f � r 7�e. S, �.-� - - - ckl e &tww AS J9R c- - - --� C./ col rug- �s � . �G.•..�le�,r �e s� �%l �e � --odl . Filled by: EC EIV E D )'Omkl�n ELLO I-. TEER GOA Alember of THE BEAZER GROUP so _V4I�9111i70 P.O. BOX 1131 DURHAM, N.CLAW. OFFICE TEL: (919) 682-6191 • TELEX: 6711650 • FAX 688-4898 July 14, 1992 Mr. Tracy Davis NC Dept. of Environment, Health and Natural Resources 512 N. Salisbury Street Raleigh, NC 27604 Dear Tracy: Pursuant to your request of July 14, 1992, please find enclosed a hard copy of the fax which was sent to you this date. This letter to Hr. Testerman addresses the concerns that the Groundwater Section had concerning the Crabtree Quarry underground storage tank removal. If you should have any questions, please do not hesitate to call me at 1-800-999-6356. SSE/dg Enclosure CC: File Sincerely, NELLO L. TEER COMPANY t� � I fj Steven S. Edgerton, P.G. FOUNDED 1909 r. . dy1 C/P r�P rPSS � Al oi damn 1h1 , n0 ®m _ ang® r79 IL' "' n ® ®® s N ELLO L_ 'TEER COM PANY A Alember of 7HE BW-ER GROUP P.O. BOX 1131 DURHAM, N.C. U.S.A. 27702 OFFICE TEL: (919) 682.6191 • TELEX: 6711650 • FAX: 688-4898 July 2, 1992 Mr. Nile P. Testerman Division of Environmental Management Raleigh Regional Office 3800 Barrett Drive, Suite 101 Raleigh, North Carolina 27609 Re: Review of UST Closure Report, Nella Teer Company's Crabtree Quarry, Wake County Dear Mr. Testerman: I am in receipt of your letter of June 18, 1992 concerning the UST closure report for the above facility. I have reviewed all of our records on this subject and submit the following information in response to your inquiry: 1) The Hello Teer Company has been very careful and dedicated to following prescribed procedures of UST removal and 'soil remediation. The three tanks (10,000 gal. diesel, 6,000 gal. gasoline, and 4,000 gal. gasoline) were removed on March 26, 1991.. Proper notification and approval procedures were followed. Mr. Tom Will, of your office, visited the site on two occasions and remarked that our dedication to following proper procedure was "exceptional". 2) On April 11, 1991, a report was submitted to your office describing the closure procedure (see attached copy). Lab results from Geochem, Inc, were included in this report along with a location map and a detailed sketch showing sample locations. This sketch clearly indicates the limits of excavations with the dashed line, as well as the former locations of the tanks. Eleven samples were taken from the excavated area (sample numbers NTCQ-1 - NTCQ-11). Samples 1-8 were taken immediately upon removal of tanks. A slight presence of "waste oil" was found in one of the samples and Mr. Tom Will of your office was immediately informed. As per his instruction, additional excavation was performed in the area of that sample. While Mr. Will was present at the site, three additional samples were taken in this area (NTCQ-9 - NTCQ-11). Each of the samples were cicai�. The excavation remained open until we received confirmation from your office that no additional sampling was required and the excavation could be refilled.. FOUNDED 1909 Page 2 3) The sample marked NTCQ-12 was taken from the stockpile of excavated soil. We simply wanted confirmation' of the contamination in the excavated soil. 4) There has never been a waste oil UST present on this site. The source of the "waste oil", in our opinion, is simply a derivative of the gasoline or diesel from these tanks. There was no noticeable contamination at or near the surface upon excavation and the odor of the hydrocarbons was only encountered at or below the tank level. These tanks had contained only gas or diesel throughout their history. 5) At this time, we have stockpiled on site approximately 750 yards of contaminated soil to be remediated. On August 23, 1991, the Nello Teer Company made application with the NC DEHNR Fayetteville Regional Office for a permit to landfarm at a minimum thickness the above contaminated soil at our Elliott Sand & Gravel Plant in Harnett County, Erwin, NC. Mr. Jim Bales of that office reviewed the application and visited the remediation site before approval. On August 28, 1991, Groundwatear Permit No. SR0600003 was granted to the Nello Teer Company for remediation of the 750 yards of contaminated soil from the Crabtree site at the Elliott site. Please find copies of the applications and permit attached. In addition, the State Division of Land Resources granted approval with a modification of Mining Permit No. 43--03 to allow the landfarming. We anticipate the landfarming/remediation process to commence by the end of July 1992, as the weather will permit. I trust that this information will answer any questions you may have. I assure you that the Nello Teer Company has taken every precaution to follow the guidelines and reaulati.ons in this matter. If I can be of any further assistance, please do not hesitate to call. Sincerely. NELLO L. TEER COMPANY James C. Izzell, P.G. Enclosures cc: "File •.= 'N v O X to m m m ? n U Q y0 � W p U W " o N ? E c ) cc 3 N a CD o C7, ❑ ❑ ❑ O ❑ ElA a 0 N N O N 7 C E co x T F b 0 T U CO U N N Cl -5 N = m m `m Q I, N CC U LU H � m F+ c m m N m o I'm 6 1ao,3 a Q U T U O p uJ �o O y N VVe gh Regional Office o = O ° L r G N f0 c a v a o a $ � m `vc itl r Q m� a N N m 0 Q d m C'V N? Y Q -- a daa�� Z a o c G c my Q W U U a` ui...a.D..s r -1 A N rn u 0j 4-1 H al %. N N O P toz m •� • a H- u w 00 ;:j t ArnW w m m V Q co C M n C 47 Q io C rn in to W LLU ' e •; C> II—. TEER COM PANY ix A hlemkr of 7111 BEAZI;H GROUP f=U" 1131 DURHAM, N.C. U.S.A. 27702 W W 2 :E TEL: (919) 682.6191 O 0 TELEX: 6711650 - FAX: 688AS98 i July 2, 1992 o ;d :J -il Management m e 101 m 27609 E re Report, Nello Teer Company's z° " ,ke County W ` E o I your letter of June 18, 1992 for the above facility. I have a this subject and subm1t the Ito your inquiry: concerning reviewed following 1) The Nello Teer Company has been very careful and dedicated to following prescribed procedures of UST removal and soil remediation. The three tanks (10,000 gal. diesel, 6,000 gal. gasoline, and 4,000 gal. gasoline) were removed on March 26, 1991.. Proper notification and approval procedures were followed. Mr. Tom Will, of your office, visited the site on two occasions and remarked that our dedication to following proper procedure was "exceptional". 2) On April 11, 1991, a report was submitted to your office describing the closure procedure (see attached copy). Lab results from Geochem, Inc. were included in this report along with a location map and a detailed sketch showing sample locations. This sketch clearly indicates the limits of excavations with the dashed line, as well as the former locations of the tanks. Eleven samples were taken from the excavated area (sample numbers NTCQ-1 - NTCQ-11). Samples 1-8 were taken immediately upon removal of tanks. A slight presence of "waste oil" was found in one of the samples and Hr. Tom Will of your office was immediately informed. As per his instruction, additional excavation was performed in the area of that sample. While Mr. Will was present at the site, three additional samples were taken in this area (NTCQ--9 -- NTCQ-11). Each of the samples were clean. The excavation remained open until we received confirmation from your office that no additional sampling was required and the excavation could be refilled.. FOUNDED 1909 TON�GL �.[�.LG, DATE' SPEED ER® FROM DATE Z� SUBJECT —1 N 9aC M ij REPLY 35 SIGNE SENDER: DETACH AND RETAIN YELLOW COPY, SEND WHITE AND PINK COPIES . • � ' � _ • + � � ` • t � � � • . ' , r I ,T f � ' � � 1 � r � , �� ,. .,, ' � • ,, .. - �, a - i � ` r r � �. f a w I LJ f7 Ir rr cr- y, r R L dam,CAL� AA 1 ' CkrOol Pk-40q4- ��j �CW-e_ r ►o,f x ,3UL-14-19 J2 16: 31 . FR0 FH'JR PRO P . 61 �.0 E 1, VI JUL 14 192 r / C Q[�ALITY SECTION /4 e / . /tl'e.!/� ' ._ .. _ Gt� � . r,.. -i r,E /•' v sv� �.� +•{' � � !.�.�/,;J�_4:•� � / J •r V k4- 1750 if1.� .� � r✓ 7-4 /I.4✓ C�' L.�t 1. � �... � /.�-,� =� GAS ~l_-i / i�T.i%�.f ..mot>VJ'/ �.r - _L�i�.r�.r �-!�' -�� .J'i�j %� j _�/ !�.�,..�•-f 4.�1�i G�.c � 4_r-•-ti- (.' .-`�'�-��•� �c.�`i'C.G_-f � % GLQ �� 7 ��d tk-.. �^''� . �` mil.° i�..'�-r' /1, �G( 7��f1..•� :17� !a F �tt � ze.-�� � ... �• f1"s' /��t — _.. ... % . ..4-.1�7.f-� -/�`li�.1.2..{-�-L r /� {J/,u(/1i � /,v/ �-. �fI l/�.rr+.1J �� �';..r1.+-•� � i;� � � �' � rf �'.. �:'�.� l:-�1--'C1 L.<f�.� LIi�S+�� . LIC. G�^--" t_ I�r�'-�--C-f' �'-+' A� cif G_. �1`-I�J • .. ..- . ..� � C+J�' ! ��.. /.LS� f'!�C� u �..:�a�.�,f�rs.� r�•-;.re �,r �i.�.. .,C,j. �...� J : �-z rr/, • .� ..�'''�V-7 j�9zt L'.�.�'�.?.� lti�,i�•�' �i.�/,�f lr-�tE.�-Cr .�� I��'-�/� t.� l �®t`' �..- r.••t�tf =.�7` ►L�-r..p� f --�.G 1-�--.;r"..� f=4f rG'-f' r F' St•14" brand tax trans intttmi�7 aa meu �(t j ofopg��a. From rs' o Ir � � 14 TIDTAL' R. o1 , HELLO L. TEER COMPAf"i`'i' A A f !0. 692 - P002/004 1 ._...I 'iEE:R 4=OMF:MAN'Y of THE BEAZER GROUP P.O. BOX 1131 DUA, HAM, N,C. OFFICE TEt-' (910) Mr. Nile P. Testerman Dl v i.K i.on of Environmental Raleigh Regional office 3800 Barrett Drive, suite Raleigh, North Carolina 101 - TIFI FX: 671 1 SW July 2, 199,' I Management 101 27609 Re: Review of UST Closure Report, Nello Tee:r Crat}tree Quarry, Wake County Dear. Mx. Testerman, U.S.A.27702 FAX: 6894998 ompany's T. am in receipt of your lett4r of June 181992 concerning the UST closure report for the above facility., ;1 have reviewed all of our records on this sub)ect and aub�it the following information in response to your in4ulryr 1) The hello Teer Company has beef very careful and dedicated to fo,ll.owing prcacribed procedureal of UST rimoval and soil remediation. The three tanho (1$,000 gal. d�ezel, 6,000 gal. gasoline, and 4,000 gal. gasol.ije) were rem�ved on March 26, 1991. Proper notification and approval procedures were followed. iir.. Tom Mill, of your office, v.i.silted the aitb on two occasions and remarked that our dedicationito following proper procedure was -exceptional.". 2.) On April 11, 1991, a report was submitted to your office describing the closure procedur (see attacoed Copy). Lab results from Geochem, Inc. Were �ncluded in this report along with a location map and a detailed nkesteh showing nnmple locations. This sketch clearly indicates the limits of E?YCAVAr_.inng W't.tIt ttzN r1A01►,Ar1 li*�e, pll as t?:r forWBr 1--Catio:.� of the tanks. Eleven samples were taken from the excavated area (sample numbers NTCQ-1 -- NTCQ-1i). samplei 1-8 were taken immediately upon removal of tanks. A alight presence of "waste oil" was found in one of the samples and Mr. Tom Will of your office was immediately informed. As per his inectructi.on, additional excavat:.ion wan performed in the are* of that sample. Whi le Mr.. Will was present at the isLtt, three additional samples were taken in this area (NTCQ-9 - NTCQ-11). E4ch of the samples were clean. The excavation remained open until we received confirmation :from your office thatt* no additional sampling was required anti the excavation could be refilled.. I �r.i 01g i-�`vlvv�v iauy I 071W/92 69: 09 h,IELLO LrTEER COMPANY N0.692 POU3/004 Page 2 3) The sample marked NTCQ-12 w4s taken from the otookpile of excavated soil. We simply I wanted coifirmation of the contamination in the excavated soil.. { 4) There has never been a wasty oil UST present on this site. The source of the waste ollo, in our opinion, is simply a derivative of the gasoline or Kai& from there tanks. There was no noticeable cont-amt.nation at or near the surface upon excavation and the odor of the h*drocarbons was only encountered at or below the tank Level.. The*e tanks had contained only gas or diesel throughout their histosri. 5) At thin time, we have stockpiled on site approximately 750 yarda of contaminated soil to be remediated. on August: 23, 1991, the Nelln Teer Company made application with the NC DEHNR Fayetteville Regional Office ff r a permit to landfarm at A minimum thickness the above contaminated soil at our Elliott Band & Gravel Plant in Harnett County; Erwin, NC. Hr. Jim Boles of that: office reviewed the application and ulksed the remediation site before approval. On August jS, 1991, Groundwater Permit No. SROG00003 was granted to the Neilo Teer Comp"ny for remediation of the 750 yards of contaminated soil from this Crabtree site at the Elliott site. Please find ;opies of this applications and permit attached. In addition; the Statej Division Ox Land Resources granted approval with i modificatiop of Mining Permit No. 43-03 to allow the land#arming. We anticipate the landtarming/remediation proccon to commence 6y the end of July 1992, as the weather will permit.i I trust that this information will answer any quentiones you may have. I assure you that the Hello Tee Compooy has taken every Precaution to follow the guldel.ines and regulations in this matter. if. I can be of any fuhher assistance, Please do not hesitate to call. Sincerely, HELLO L. TEAR COHPAXY James C. IZIell, P.G. Enclosures cc:: File 09:10 NELL.O o a E b C a Vi Li y L �uuu_ � 'ro ai [IL 6 f"2 � d d njVe gh Regional We t'"�•g } ' k � E ✓� A 0 s CD 0 Ir r- a t� N u 41 14 O W . i PhD ;ti 4! •rl O i� Gl v TEED COMPANY Ii U LU a ee ca W 2 Isr � P004/CQ4 C> 1.-. TEAR j4=C>M PANY i nVUV rrcurercr yru.,�... ruww 1131 DIURMAM, N.1G. U.S.A. 27702 ;E TEL: (919)'e84-0191 TELEX: e711eau - mom saa4s98 i July 2, 1992 I i r, il Management ie 101 27609 ire Report, Mello Teer Companyr a jke County L`am�� � 9 .� �_ a ILL your letter of June 18, 1992 � F k L �.. .� a L. _ 4. .. .... F.. .. � l pia.. facil.4 T T ..n have have a x I� 1IUi I� Vt l he, above �.,r. . . . . • * $IM i1D { this 4ubJett and submit the to yourl l.nquiryt concerning reviewed following 1) The Mello Teer Company has been very cap eful and dedipated to following prescribed procedures of UST removal and soil remed.iation- The three tanks (10,000 gal. diesel, 6,000 gel. gasoline, and 4,000 gaol. gasoline) were removed on March 26, 1991. Proper notification and ipproval prodedurea were followed. Mr.. Tom W1,11, of your office, VIBILea the ssite vie two occasiois and remarked that our dedication to following proper procedure war "exceptional". 2) On April 11, 1991, a report was submitted to your office describing the Closure procedure (eee attached copy). Lab results from Geochem, Inc. were .included in this report along with a location map and a detailed sketch showing sample locations_ Thim sketch clearly indicates the limits of excavations with the dashed 11ne, as well ah the former locations of the franks. Eleven samples wera taken t om the excavated area (sample numbers HTCQ--1 - NTGQ-11). Saiples 1-8 were taken immediately upon removal of tanks. A slighIt presence of "waste oil" found �n one of t�h�i fiamplen and EMr. Tam will of your Y r. .� nub found ... i.. one vim. ._--- j �-.-.m.-w _" �___ 1__.. - your was immediately inforged. Are per him instruction, addi.t:ional, excavation was perfAmed in the area. of that sample. While Mr- Will was present at the site, three additional samples were taken in this area (NTCQ-0 - HTCQ-11).i Each of the samples were clean. The excavation �remai.ned op n until we received custirmation from your office that no ad itional sampling was required and the excavation could be refilled.. FOUNDED 1909 i 09: a8 NELLB- L. TEER COMPANY NO. 692 POCl/W4 FACSIMILE TRANSMISSION FAGF : i Gi lT DATE: TO. FROM: Cr)HMENTS : i A Memberlof THE BEAZER GROUP I I i OUR FAX IRTMBER 1S : Tr Vr)lf nn mn'Y ocrVt117 ( 919 ) 688- 898 AT T MA rrolTAT 'FAAMC2M?T'rVT) i PLEAS: CALL US AT i 4 9) 682-6'191. H MEMO * TO: 2 " - (�x6w-,p wA-�r>fX- 1 +vM 1J6 L,%.,, ,~fZL- S . • V. TE t";'t I V t L) SUBJECJI JAV ��i ,00 (ate) LAND QUALITY SECTION Va) .-7W* ;Zp W-HC-- ,47- &OL, VIOLeMovJ AT- P66 Sft�— 7?-�Y e4vze— +�rSSrr�G - HE- /S- From: ..� STATC 1 North Carolina Department of Environment, Health, and Natural Resources Printed nnRecycled Paper �u�. FROM , hTE w l �c1 •I���. SUBJECT.A�—mu N[l9 ey U y MESSAGE / tt �f ffU. - P- Zb/17fqiW i._ X li��.r�t._ AL��� l .-rt.�i �I; C"n�^✓--�` —rotn vne Hnv , U —,oto sox r+p m SIGNED WilsonJonsS .Cub—k— • MADE IN U 5 A, 444M TrIM"t4 - o wrrwUoow. IM _ RECiP1E 33 SPEED L. T® iTp•, DATE 46, i�� rwlv)� Lz� --- - - 0 REPLY •' � !% .e.. �• ,mac.. v U lUx'k 4 4a, A.1L. J? f ,r am � - i { s , /f z !�':•734�c,,�„r, f�Vr/�-+ vim" pth�nr,fG /nl�v SIG r ED NT: RETAIN WHITE COPY, RCTURN PINK COPY. PL ASE TURN OVER FOR USE WITH WINO ENVCLpPE. t TO RETURN 1N A WINDOW ENVELOPE, PLEASE FILL IN NAME AND ADDRESS HERE AND FOLD AS SHOWN WITH THIS SIDE FACING WINDOW. -FOLD TO �E �v r•� N r-rr/�.,r, r SUBIEC7 MESSAGE � n h f�1/IJGJ AAOV.a�` 171w /%1 E /;:In (Ir1�LlQ . � � r �d•. ��l .,>,....lt.,t .I-X�,1 (f' (•r�'7� �.� ,'1!a �Ifl_ v SIGNED WilS0nJOn0* • C-b—i— • MADE 1N U S A. ` 14903 Trlplluls • O WholJolln, 1BEY r - REPLY SPEED L.F.�T•T/ FROM DATE v- I cip. v ; SIGN SENDER: DETACH ANO RETAIN YELLOW COPY, SEND WHITE AND PINK COPIES s AM • A 803-548-3066 TOLL FREE USA 800-233-6181 vibra-tech engineers incorporated CONSULIANIS TO THE MINING, QUARRYING. CONSTRUCTION AND EXPLOSIVE USING INDUSTRIES 377 CAROWINDS BOULEVARD SUITE 111, FORT MILL, SC 29715 April 28, 1992 MAY 2 11992 Mr. Steve Edgerton Nello Teer Company LAND QUALITY SECTION 211 W. Parrish Street Durham, North Carolina _ t _ f _ Blasting 7 _ _ t _ _ t _ I- _ the a3ubjeci: Assessment v= Proposed �sias,Ging operations =vr Crabtree Quarry Permit Renewal, Raleigh, North Carolina. Dear Mr. Edgerton, As requested by Nello Teer Company, Vibra--Tech Engineers, an independent seismic and explosive consulting firm, has reviewed the planned permit renewal of the Crabtree quarry with respect to off site impact of blasting operations. Our review and recommendations are as follows. OVERVIEW Nello Teer company has requested renewal of mining permit number 92-03 for the Crabtree Quarry in Wake County, North Carolina. in addition to the current mining site, Nello Teer has proposed an expansion consisting of the extension of blasting activities to the south side of Crabtree Creek. As mining on the south side of the creek will result in the commencement of blasting operations in an area where blasting associated with the quarry has not been required to this date, a review of the impact of blasting in this area with respect to adjoining properties is required. IVJ "I*11:4Z4a11dv.%00zLe�K6]4:1"IVIII1111to) ZK Vibra-Tech has been involved in the blasting program at the rrahtraa 011a rry fnr near tcan vnarc ni rr i nrr f-h i c t- i mo considerable changes has occurred both in the actual mining operations at Crabtree as well as the development of the nearby area. In an effort to minimize the impact of blasting on this rapidly growing area, Nello Teer has • v#bra-tech utilized state of the art seismic monitoring and blasting techniques to insure that properties located near the quarry have not been impacted by blasting. A review of blasting operations for the past two years has been performed to determine the current impact of blast related vibration on adjacent properties. In reviewing the previous two years' blasting, Vibra-Tech identified only two blasts that reached a value representing twenty-five percent of the vibration limit to be maintained as a condition for compliance in the current mining permit requirements. In fact, most blasts show maximum recorded particle velocity values of less than 0.10 inches per second (ips) or ten percent (10%) of the allowable limit based on the North Carolina Mining Act of 1971. The low values recorded from primary blasts at the Crabtree quarry are a direct reflection of the Nello Teer Company's goal of limiting off site vibration values to 0.10 ips or less as a means of minimizing the perception of blasting activities by neighboring property owners. Their goal of reducing the off site impact of blasting operations is further evidenced in the utilization of response spectral analysis for the assessment of vibration effects related to blasting, as well as the continual utilization of various computer modeling programs such as the VIBRAMAP Frequency Prediction and Control study currently utilized on an as needed basis at all Nello Teer operations. In the past six months, the Crabtree quarry has updated its monitoring program by utilizing a Series 7000 digital seismic monitor to record blast events. The Series 7000 unit is a self --triggering unit that allows for response spectral analysis to be performed internally and displayed on the monitor's LCD screen. This unit allows the blaster and quarry staff to review the frequency content of any given blast immediately after each shot. This data can be beneficial in planning subsequent blasts and identifying potential problems areas before they become an issue. The recorded data from the Series 7000 unit is still sent to Vibra-Tech on a monthly basis for the submittal of a more detailed report covering the blasting activities of the quarry on a month to month basis. Libra -tech REVIEW OF PROJECTED VIBRATION VALUES FOR THE SOUTH SIDE OF CRABTREE CREEK In assessing the impact of blasting operations for the south side of the creek, it is necessary to rely on commonly accepted methods of comparing recorded vibration values and distances with projected distances between the new pit and existing structures off Duraleigh Road. In utilizing mathematical formulas to project vibration values, some important factors need to be addressed. These formulas rely on the utilization of average values for various geol na i c rnnctantc fnr -,nil el act i r-i ty Anr3 other site parameters. Since these values usually deviate from actual geologic conditions, the results must be treated for what they are designed�to be, approximations to be utilized in blast design development. The data from blasting -operations at Crabtree over the past two years has been used to provide projected vibration values for the south pit. Vibration values were calculated based on the final- pit development and location of structures existing - as., of this date. A projection of vibration data from the past two years, based on the minimum distance from the final south pit development to the nearest existing structure, has been plotted on a particle velocity versus scaled distance graph. The average particle velocity value based on current blast designs is expected to be in the 0.10 ips to 0.30 ips range. These values represent values significantly below both the current Bureau of Mines cr4 te-J a for tryt�rc� r+nco l �t.r frerrrie„`+rr 7 l ist V4AN4 to Y freg1 enc sce-n .lr J os, Gl �W well as the conditions for permitting as specified under the current State of North Carolina Mining Act. MODIFICATIONS TO THE CURRENT BLAST DESIGN FOR THE SOUTH PIT As we mentioned previously, calculated particle velocity projections should only be used as a means of determining trends or approximations with regard to transmitted vibration values. In assessing the potential impact of blasting for the south pit over the projected "life of the quarry, it is critical to note that blasting operations will be moving towards the perimeter of the Crabtree quarry property as a steady progression of the various benches over time. 0 vibra-tech In the course of pit development, data recorded from seismic monitoring of blasting operations will be utilized to form a comprehensive database for the impact of blasting operations on the adjoining properties. As stated previously, the Crabtree quarry is currently utilizing state of the art seismic analysis in the form of the Response Spectra Velocity Profile (RSVP). The use of the response spectral analysis technique allow for accurate assessment of the damage potential for any blast event. This same program will be utilized, along with the VIBRAMAP frequency control program, in the development of blasting operations at the south pit. As pit development continues in the south pit, modifications to the current blast plan may be necessary to maintain vibration limits within the goals set forth by Nello Teer. Based on the approximate values projected in our calculations, we are certain that the current blast design could be utilized throughout the proposed south pit without exceeding the 1.0 ips limit set forth as a condition of permitting. Given Nello Teer's corporate policy with regard to minimizing off site impact of blasting, it is our assumption that as the south pit is expanded over time, modifications to the current blast design may be required. S UMNLARY Blasting operations at the Crabtree Quarry have been monitored and reviewed by Vibra-Tech for several years in an effort to minimize complaints from neighboring properties. Though several complaints have been recorded over the past years, given the development of the area and the current density of residential properties surrounding the Crabtree quarry, we feel that concerns from neighboring property owners are minimal, a testament to Nello Teers' commitment to maintaining the quality of life of its neighbors. The expansion of mining operations to the south side of Crabtree Creek will result in a change in the perception of blasting operations for a relatively small portion of the surrounding community. Given the relatively low human perception to ground transmitted vibration (approximately 0 0 vibra-tech 0.04 ips), pit development in this area will no doubt result in the perception of blasting activities for the first time for some residents. Based on the existing blast program at the Crabtree quarry, we feel that these properties that will eventually be located closer to active blasting areas at the Crabtree quarry that is the case at this time, will not be negatively impacted by blasting operations. The utilization of pre - blast surveys for property owners located within the projected blast effects zone, comprehensive monitoring of all production blasts, and the development of a means of effective communication and education between the quarry and residents located to the south of the current mining operation will insure that concerns over the impact of blasting for the south pit remain minimal. The utilization of computer modeling programs such as the VIBRAMAP system and. response spectral analysis from the initial phase of blasting throughout the life of the south pit will insure that changes in the content and amplitude of ground vibration resulting from blasting can be recognized and changes made to insure that vibration values remain significantly below established vibration criteria. Based on Vibra-Tech's knowledge of the current blasting program utilized at the Crabtree quarry, and a comparison of projected vibration values with current damage criteria, it i c niyr nri ni nn that hi act i nri nnprat i nnc wi th i n thin rtirrant projections for the south pit expansion, pose no threat to properties located adjacent to or nearby this area of the Crabtree Quarry property. should you require a more detailed analysis of the current blast design utilized by Crabtree, or have any questions regarding the contents of this report, please do not hesitate to contact me at once. Respectfully submitted, Stua#tBrashear, CSI Regional Manager Vibra-Tech Engineers, Inc. 0 • Nello L. Teer Co. vibra-tech Proposed Crabtree Quarry Expansion Velocity Projections Shot Event Event Max. Meas Peak Peak Meas Projected No. Date Time #/d Dist PPV A/0 S.D. S.D. PPV 43 6/9/90 13:21 77.0 1100 0.13 111 125.4 85.5 0.23 44 6/7/90 13:00 76.1 1500 0.09 111 171.9 86.0 0.25 45 6/11/90 13:13 75.7 1200 0.44 107 137.9 86.2 0.89 46 6/19/90 10:58 78.2 1100 0.08 110 124.4 84.8 0.14 47 6/20/90 10:15 64.3 1300 0.05 110 162.1 93.5 0.11 48 6/25/90 13:25 75.7 1300 0.20 110 149.4 86.2 0.46 49 6/27/90 15:05 74.0 1400 0.09 108 162.7 87.2 0.23 50 7/2/90 13:10 81.3 1350 0.16 112 149.7 83.2 0.39 51 7/11/90 11:45 75.6 1300 0.13 105 149.5 86.3 0.30 52 7/13/90 13:10 75.9 1400 0.09 110 160.7 86.1 0.23 53 7/16/90 11:28 76.1 1700 0.18 111 194.9 86.0 0.61 54 7/19/90 13:02 76.9 1100 0.16 116 125.4 85.5 0.28 55 7/25/90 13:52 70.3 1100 0.12 110 131.2 89.5 0.21 56 7/30/90 13:28 81.7 1000 0.14 109 110.6 83.0 0.22 57 8/l/90 10:42 83.4 1000 0.09 109 109.5 82.1 0.14 58 8/8/90 12:55 82.0 1000 0.13 113 110.4 82.8 0.20 59 8/13/90 11:37 74.4 1100 0.13 108 127.5 87.0 0.23 60 8/14/90 10:55 78.0 1500 0.13 111 169.8 84.9 0.37 61 8/16/90 11:15 82.4 1600 0.05 111 176.3 82.6 0.16 62 8/22/90 11:56 77.0 1100 0.14 108 125.4 85.5 0.25 63 8/27/90 13:39 82.3 2000 0.08 115 220.5 82.7 0.35 64 8/30/90 14:48 74.4 900 0.21 107 104.3 87.0 0.28 65 9/6/90 11:49 82.0 1500 0.07 113 165.6 82.8 0.20 66 9/13/90 11:44 79.4 1700 0.16 115 190.8 84.2 0.55 67 9/18/90 13:55 77.0 1000 0.16 110 114.0 85.5 0.25 68 9/25/90 14:08 78.3 2100 0.08 114 237.3 84.8 0.37 69 9/28/90 11:39 80.0 1300 0.07 117 145.3 83.9 0.16 70 10/3/90 10:54 78.7 1100 0.07 111 124.0 84.5 0.12 72 10/10/90 14:51 80.0 1500 0.08 105 167.7 83.9 0.23 73 10/15/90 13:11 79.0 1600 0.06 105 180.0 84.4 0.19 74 10/24/90 13:38 77.2 900 0.22 110 102.4 85.4 0.29 75 10/29/90 14:18 80.0 1500 0.07 111 167.7 83.9 0.20 76 11/5/90 14:58 160.4 1300 0.11 108 102.6 59.2 0.25 77 11/7/90 13:20 74.0 1500 0.04 108 174.4 87.2 0.11 78 11/15/90 13:00 82.2 1500 0.09 114 165.4 82.7 0.25 79 11/16/90 14:45 73.5 900 0.08 109 105.0 87.5 0.11 80 11/21/90 13:00 73.6 1400 0.07 105 163.2 87.4 0.18 81 11/28/90 13:00 70.6 1100 0.05 111 130.9 89.3 0.09 82 12/5/90 14:00 74.1 1600 0.06 108 185.9 87.1 0.19 83 i2/6/90 13:00 73.5 1000 0.03 114 ii6.6 87.5 0.05 84 12/10/90 13:03 82.3 1200 0.05 108 132.3 82.7 0.10 85 12/13/90 11:20 73.9 1000 0.07 108 116.3 87.2 0.11 86 12/18/90 13:06 73.0 1000 0.05 108 117.0 87.8 0.08 87 12/19/90 13:07 69.1 1000 0.09 105 120.3 90.2 0.14 1/141''91 13z21 75.4 1nVnn 0.07 t 116 117.2 nr_ A1 ou.4 G.ii 2 1/15/91 13:19 70.0 1800 0.07 111 215.1 89.6 0.26 3 1/16/91 11:34 70.6 1050 0.06 109 125.0 89.3 0.10 4 1/17/91 11:32 66.6 1100 0.06 110 134.8 91.9 0.11 5 1/12/91 11:32 66.0 1100 0.08 108 135.4 92.3 0.14 r V 1 /7n In i� Wf w1 19.1 ) 1J. 1J rn 7 V J. J 1Bnn S' Ww n nr V . VV 1n0 1Vu fro '] 1VV • L nn 1 7V. 1 n 1C V . i. 7 1/31/91 11:08 72.0 1000 0.10 112 117.9 88.4 0.15 Nello L. Teer Co. vibra-tech Proposed Crabtree Quarry Expansion Velocity Projections Shot Event Event Max. Meas Peak Peak Meas Projected No. Date Time #/d Dist PPV A/0 S.D. S.D. PPV 8 2/5/91 13:16 67.3 1500 0.06 110 182.8 91.4 0.17 9 2/11/91 13:12 65.7 1500 0.10 112 185.1 92.5 0.28 10 2/14/91 11:46 71.3 1000 0.12 108 118.4 88.8 0.18 11 2/19/91 11:55 73.3 1300 0.06 106 151.8 87.6 0.14 12 2/20/91 11:16 76.4 1800 0.05 110 205.9 85.8 0.19 13 2/20/91 13:06 74.0 1300 0.04 109 151.1 87.2 0.09 14 2/28/91 11:55 76.2 1350 0.04 110 154.7 85.9 0.10 15 3/5/91 13:09 72.0 1200 0.04 107 141.4 88.4 0.08 16 3/7/91 14:25 80.6 900 0.16 105 100.2 83.5 0.21 17 3/12/91 13:57 83.0 1250 0.04 110 137.2 82.3 0.09 18 3/15/91 11:35 73.1 900 0.06 111 105.3 87.7 0.08 19 3/19/91 13:15 70.3 1300 0.05 109 155.0 89.5 0.11 20 3125/91 13:21 71.3 1350 0.04 109 159.9 88.8 0.10 21 3/27/91 13:10 76.0 1000 0.07 ill 114.7 86.0 0.11 22 4/2/91 11:31 75.2 1300 0.04 108 149.9 86.5 0.09 23 4/4/91 11:05 72.6 1000 0.08 105 117.4 88.0 0.12 24 4/8/91 13:12 85.3 1900 0.04 107 205.7 81.2 0.16 25 4/11/91 13:14 71.5 1300 0.06 104 153.7 88.7 0.14 26 4/15/91 12:04 75.8 1950 0.04 110 224.0 86.1 0.17 27 4/22/91 13:10 73.3 1250 0.04 105 146.0 87.6 0.09 28 4/24/91 14:31 77.3 1100 0.05 103 125.1 85.3 0.09 29 4/24/91 14:33 66.7 1100 0.06 112 134.7 91.8 0.11 32 5/3/91 13:11 71.4 1950 0.09 105 230.8 88.8 0.38 33 5/8/91 11:55 77.0 1800 0.06 102 205.1 85.5 0.22 34 5/13/91 12:02 75.5 1100 0.05 106 126.6 86.3 0.09 35 5/14/91 11:25 67.4 1000 0.04 105 121.8 91.4 0.06 36 5/16/91 9:30 72.0 1200 0.04 107 141.4 88.4 0.08 38 5/28/91 13:08 72.4 2050 0.04 110 240.9 88.1 0.18 39 5/31/91 9:26 69.2 1050 0.07 105 126.2 90.2 0.12 40 6/6/91 11:58 74.0 1100 0.05 108 127.9 87.2 0.09 42 6/11/91 9:44 76.0 1600 0.05 108 183.5 8640 0.16 43 6/13/91 11:34 77.8 1100 0.05 107 124.7 85.0 0.09 44 6/18/91 11:34 78.9 1300 0.08 109 146.4 84.4 0.18 45 6/24/91 9:58 71.1 1100 0.06 108 130.5 88.9 0.11 46 6/25/91 11:03 71.0 1400 0.04 105 166.1 89.0 0.10 47 6/27/91 11:41 69.7 2000 0.02 108 239.6 89.8 0.09 48 7/1/91 10:14 69.6 1300 0.04 109 155.8 89.9 0.09 49 7/9/91 11:56 77.7 1100 0.03 104 124.8 85.1 0.05 50 7/11/91 11:56 70.0 1150 0.05 109 137.5 89.6 0.09 52 7/22/91 12:03 76.7 1100 0.05 105 125.6 85.6 0.09 53 7/25/91 11:03 97.6 1850 0.03 109 187.3 75.9 0.12 54 8/1/91 10:41 70.8 1000 0.05 105 118.8 89.1 0.08 55 8/2/91 9:46 73.5 1800 0.03 105 210.0 87.5 0.11 56 8/6/91 10:18 74.4 1100 0.04 103 127.5 87.0 0.07 57 8/13/91 11:56 76.7 1400 0.05 105 159.9 85.6 0.13 58 8/15/91 13:12 79.5 1100 0.08 106 123.4 84.1 0.14 59 8/21/91 10:19 65.0 1500 0.04 107 186.1 93.0 0.11 60 8/29/91 14:35 43.6 2500 0.04 109 378.6 113.6 0.24 61 9/3/91 13:05 76.1 1100 0.06 108 126.1 86.0 0.11 62 9/9/91 13:12 76.2 1200 0.04 97 137.5 85.9 0.08 63 9/16/91 13:12 74.1 1500 0.07 93 174.3 87.1 0.20 Nello L. Teer Co. vibra-tech Proposed Crabtree Quarry Expansion Velocity Projections Shot Event Event Max. Meas Peak Peak Meas Projected No. Date Time #/d Dist PPV A/O S.D. S.D. PPV 64 9/19/91 13:14 75.1 1100 0.12 97 126.9 86.5 0.21 65 9/24/91 12:01 82.7 1900 0.02 110 208.9 82.5 0.08 67 10/7/91 13:09 72.3 950 0.14 97 111.7 88.2 0.20 GO V V 1n/OIn1 iW� V% W 1 ll 11 . dC-/7 •i3 5 900 0.07 93 ivy v 87.5 0.09 69 10/14/91 13:27 78.4 1300 0.02 128 146.8 84.7 0.05 70 10/21/91 13:11 75.4 900 0.02 N/A 103.6. 86.4 0.03 71 11/5/91 11:54 72.0 900 0.05 110 106.1 88.4 0.07 73 11/7/91 13:06 66.3 1000 0.05 110 122.9 92.1 0.08 74 11/19/91 13:00 85.8 1900 0.19 97 205.1 81.0 0.77 75 11/20/91 11:49 72.5 900 0.05 110 105.7 88.1 0.07 76 11/26/91 13:06 68.7 900 0.09 97 108.6 90.5 0.12 77 12/2/91 13:07 71.0 1400 0.05 110 166.1 89.0 0.13 78 12/4/91 11:44 83.5 1900 0.05 110 207.9 82.1 0.20 79 12/9/91 13:03 69.6 850 0.05 110 101.9 89.9 0.06 80 12/12/91 13:07 72.5 1200 0.10 105 140.9 88.1 0.20 81 12/18/91 11:46 73.0 800 0.16 104 93.6 87.8 0.18 1 1/6/92 13:05 76.8 1200 0.08 112 136.9 85.6 0.16 2 1/14/92 13:10 82.6 1400 0.06 116 154.0 82.5 0.15 3 1/20/92 13:05 71.8 700 0.08 107 82.6 88.5 0.07 4 1/24/92 13:00 86.7- 1700 0.02 114 182.6 B0.5 0.07 5 1/30/92 11:39 74.6 700 0.08 110 81.0 86.8 0.07 6 2/4/92 13:16 86.7 1800 0.05 110 193.3 80.5 0.19 7 2/12/92 13:09 80.7 700 0.29 107 77.9 83.5 0.26 8 2/17/92 13:22 85.8 1850 0.05 110 199.7 81.0 0.19 9 2/20/92 13:08 74.6 1200 0.09 112 138.9 86.8 0.18 10 2/24/92 11:18 72.6 750 0.03 111 88.0 88.0 0.03 11 3/2/92 13:45 89.6 1900 0.05 110 200.7 79.2 0.20 12 3/5/92 13:07 68.1 750 0.05 110 90.9 90.9 0.05 13 3/11/92 13:05 87.5 1950 0.02 115 208.5 80.2 0.08 14 3/23/92 13:40 102.6 1950 0.05 110 192.5 74.0 0.21 15 3/24/92 13:10 79.6 800 0.05 110 89.7 84.1 0.06 16 4/l/92 13:17 73.5 850 0.05 110 99.1 87.5 0.06 17 4/8/92 13:21 85.5 2000 0.05 110 216.3 81.1 0.22 Notes: Italicized items reflect the maximum possible values. Projected Peak Particle Velocities to closest residence based on the following widely accepted formula: Pp=Pm/((ADm/ADp)^l.5) Where: Pp is the PPV projected to the closest residence Pm is the PPV as measured by the seismograph ADm is the Actual Distance measured to the seismograph. ADp is the Actual Distance projected to the closest residence (measured to be 750 feet). a v' Project Peak Particle Velocities to PPV vs. Scaled Distance 1.00T n ? 0 9u-I • 0.80 vT 0.70 0 m > • m 0.60 U O a_ 0.50 Y O � m o_ m 0.40 • ` • U N � O 0 0.30 �•• • as ,r • • _ • • N" 0.20 + we • • • • • • 0.10 • • i •+ • • f • • 0.00 50.0 60.0 70.0 80.0 90.0 100.0 110.0 120.0 Scaled Distance ift Mw • • � 11 P�a� r...4 State of North Carolina Department of Environment, Health, and Natural Resources Division of Land Resources James G. Martin, Governor Charles I -I, Cordner William W. Cobey, Jr., Secretary March 30, 1992 Director Larry H. Royster, Ph.D. 4706 Connell Drive Raleigh, North Carolina 27612 RE: Nello L. Teer Company Crabtree Quarry Mining Permit No. 92-03 Wake County Dear Dr. Royster: Thank you for your letter of March 18, 1992 regarding the renewal and expansion request presently under review by this office for the above referenced mining operation in Wake County. Please be advised that before the Department makes a decision to grant or deny this request, the criteria outlined by G.S. 74-51 and 52 of The Mining Act of 1971 will be carefully considered (copy of Act enclosed). A detailed review by this office, and several other state agencies within this Department, will be conducted to consider potential impacts of Nello L. Teer Company's (NLT) oniarati nn nn the neighhnrynrs r,tiuhl it �.T; I AI ; fo t. tc d ' r• i• .y I- v, .x..L ....L y L V-, - u 1. and u u i r quality. In addition to the comprehensive review of the erosion and sedimentation control plan for the site, several other aspects of the mining operation, including a review of visual screening and potential impacts resulting from blasting and mine dewatering activities on nearby structures, will also be thoroughly evaluated. This office requested supplemental information from NLT on March 20, 1992 to obtain additional documentation and studies to provide a comprehensive mine file upon which this office can make a fair and' objective decision. The Department feels that it is the responsibility of the applicant, not the State of North Carolina, to incur the time and cost to obtain any comprehensive, technical reports that may be required in order to address the requirements of the Mining Act. The Department requires that such reports be prepared by qualified professionals and that said reports are evaluated by the appropriate personnel within this agency as well as other qualified state agencies that have expertise in the subject matter under review. P.O. Box 27687 • Raleigh. N.C. 27611-7687. • Telephone (919) 733-3833 An Equal Opportunity Affirmative Action Employer .1 Dr. Royster March 30, 1992 Page 2 Contrary to your letter, this office is sensitive to the public's welfare and will evaluate any information that pertains to the requirements of the Mining Act. The Act does not require this office to notify the surrounding community each time additional information is requested from an applicant. The public is free to review any of our mine files during normal business hours provided that an appointment is made at a mutually convenient date and time S.ri th annrnnr i at-o staff memhrarc to ensure that thin f i 1 a i S Ava i 1 Ahl P for review at that time. Please be advised that noise, as well as off -site truck traffic and land use/property values, is not covered by the Mining Act. These issues (and any other issues that are not within the jurisdiction of the Mining Act and related state environmental laws) are handled under local zoning authority. G.S. 74-65 of the Mining Act specifically states that a mining permit does not supersede local zoning ordinances. Again, thank you for your interest in this matter. I assure you that the decision on whether to grant or deny NLT's request will be made fairly and objectively on the basis of credible technical information and the law. If you should have any questions on the above, please contact me at (919) 733-3833 or Mr. Tracy Davis, Mining Specialist, at (919) 733-4574. CHG/TED/td Enclosure cc: Mr. Tracy Davis Mr. John Holley Very truly yours, Charles H. Gardner, P.G., P.E. • i P ��T,�� x�"illp�. 02 LA1\1D RUALITY SECT fpt. NORTH CAROLINA DEPARTMENT OF ENVIRONMENT, HEALT AND NATURAL RESOURCES LAND QUALITY SECTION APPLICATION FOR A MINING PERMIT (PLEASE PRINT OR TYPE) 1. Name of Mine Crabtree Quarry County Wake 2. Name of Applicant Hello L. Teer Company 3. Permanent address for receipt of official mail. P.O. Box 1131 Durham, _N. C_._27702_ *Telephone 1-800-999-6356 4. Mine Office Address P. 0. Box 52039, Oak Parka Raleigh, NC27,612„_2039 Telephone (919) 787-0613 5. Mine Manager Kenneth Kennedy- We hereby certify that all details contained in this Permit Application are true and correct to the best of our knowledge. We fully understand that any willful misrepresentation of facts will be cause for permit revocation. **Signature ate 9 Print Name Don A. tLineb!ertrZ Title Vice -President *The Land Quality Section should be notified of change in permanent address or telephone number. **Signature of company officer required. G.S. 74-51 provides that the Department shall grant or deny an application for a permit within 60 days of receipt of a complete application or, if a public hearing is held, within 30 days following the hearing and the filing of any supplemental information required by the Department. All questions must be addressed and all required maps provided before this application can be considered complete. Attach additional sheets as needed. 1 'u, 1", 6q 00MU T•.e_ };d'-rOL rt M TOT "a.: 06000 `dr ► GC.,:Gq' iL,'.!T 3a;q 911 t_T'f"li.Fxzu main ?]T0f3-'05q i•iCTAV vole '{hf7.:Y�wop" SgIT I z Tr' r:' 4(_ YA. �1 l.�C�Jl 1-' (, fj.� �t:. POF . 1 fa'SnyO , 31 , f.rrl: I TO P,.c1 t IOO 72 P _.'; CS fl'.rt:+ TP <Q 4;?A2 ;i :.KWICA t_U.iL ? i 4Qi f. � �:y f'i•. ��!]•. i. j. �r-jC+��--'�i !'is A • it' r-. A i 1 <i : I t PSC KU . .F su; I &PI re �., R'•C'ii. 01 -4 at! ir, . P W '_RIC tr ;: OL ;"! t Irl :.{mil' :Lr:Ju req- i : 'qvlqvq : P7 L l 1,1111b ?j•,rOnIq p un q 1 o v or rjiI'_fh.7 . _ t_v'.11ft,w ';. 4. 77 I,") T!. ,"q . 'c-"i 4 i'"put ";A T Tin ml n r- - -e"_ JCTOP 0 •C'tP,''u rr-, [ Y'irjr : f �7 c- ) w * NT;t1 ��. .i «, i' _ � S:',t-is-�..f a �-)� i?- 2! G •'lff !:!7�.�-i [. r � r; lit .' o r; , ..i it vier `+f f In zoo In Qou row 7 FU OV, iT6LWfC '}TrVMS- ._A�7�; isr . r 014, j %e r.4 s' ..:i r y .. — �. .r .....-........_... ...._ _ _ �....._. _,. �-� -�-._�..., ..._..�--_• .... ,r " .i t: �; i {l �) {1 � - i � {� It ." Ci i i r, -. - '� Y� � .....,._-.._.-„_ . F .siiigw, O. :. gT!-PU '"4 y v7,oTLr ii f'r'-, T; r 143T-. Y om y i _ "L- ..�?r 1 � i z TlI�rFL'_�''J FICF 1.. •. ram_-. k .i, 7 a - Li p a njATMb i'g S fE'j' •`f•W1% {y4 A2. Is r TSB :t VDF FOWr 'T. N T u `" T MPH I T Y j, APPLICATION FOR A MINING PERMIT A. GENERAL CHARACTERISTICS OF MINE. 1. Total acreage at site covered by this permit application: Acres owned 212.4 Acres leased 21.1 Property owner if leased__ N.C. Dept. of Transiortation 2. Name of all materials mined: Granite 3. Mining method: Hydraulic Dredge Underground Shovel & Truck % Dragline & Truck Self -loading Scraper Other (explain) 4. a. Expected maximum depth of mine (feet) 495 Reference elevation: 350 AHS b. Expected average depth of mine (feet) 245 AHS 5. Has any area(s) at this site been mined in the past? Yes % No If no, proceed to Question 6. a. Acreage of previously affected land(s) at present site that has not been reclaimed: 69 acres (identify all areas on your mine map). b. When and by whom was this activity conducted? Nello Teer Co. - Under its existing mining 12ermit c. Acreage of previously affected land at present site that has been reclaimed: 0 acres (identify all areas on your mine map). d. When and by whom was this activity conducted? Same as above e. Do you wish to exclude any areas noted in 5a or c from this permit application? Yes No % If yes, how much? acres (identify all areas on your mine map). 6. Present (preminina) use of the land (estimate acreage for each): Cropland ac Pasture ac Forestry ac Fish/Wildlife ac Recreation ac Other 233.5 ac An existing quarry 7. Proposed land use after mining and reclamation has been completed (estimate acreage for each): Cropland ac Pasture ac Forestry 153.5 ac Fish/Wildlife ac Recreation ac Other 80 ac Fresh water supply. B. DETERHINATION OF AFFECTED ACREAGE AND BOND 1. Number of years for which permit is requested (10 years maximum). Ten (10) 2 r `}'I., i i5i. s' - 4Fr'. ,}T }rf.Tt;,1r� , Fr.-:flJf 'ry.G• � `,i(! `.r.':-i . �a" I c •fi•'cr�t ,"�,?.' 1: OT �►3,ti.�G!'Y'a) "fi" iI?^�;�' `PD fa` . t1TTr.iI L,: _�..w�. k S F 3:4 s'U> _ ..._ ...._ J� � t)•,t•_fiv—. I_„�,•r f- yrG0 0' :'T;]J,4 r'= Tr ,:b zr �H. !t', r, 1. r3 ri-i: Ei �' It"!.j .fibY rt' J: rlr"rl 17 ' '3I a?l 7V0 f v T.Tri' r J J I Crr: ,;. �'.I I:-1 r� +J'^f L 1 qU Cr_. _.. T '7'�{"JJ f _. 0T.„•ICI-(� ., r.�: ..!•�� { J C-.IPT=.Ji'-rei ul:ITri. jC'«_ tic _—n ----- _._. I. J C j•r',`•. ''Itjr;ri _ : Jr;�a: 1.•Ii7 - =J1: la '1']•r: f�.!'')i'� r1 ? i i". T'7 , JJ ? i) L �f I:LI. 1' �r '.t-� (< �.r''�r'� �••�•� i�� I: +"t,. �'i,;17',^./1 ..Ci�i :�l:.>r'�,'tW ...._-,ir lrJ� 1 C) rT F. lrJ _Nr':•Jti7iJJt=,C'f.iJ?CiT IT I- >. f,F 7 j `3U.. "T t. L f L'V F tit<, 1:l1}'j'�r.-._. tigaI J_r T t: t. j r �'1i i ".-- . — - - rrC r 13 ise.. 0 1 -JJ i -1 ;j -d F'•i"i'i�.J !C� r� , _J .i' ixT b iJ .�..� i I- IT 3 ? c r ;a t ttr,{'I' G :r ! J t i G CI j J —'14 1 "ItiZ s' F� T: I' l . i , • ,.� ti 7 tr.'! ...,. '.f >:7 i }' ! i i } ;JJ ire i {i 4: � '} f !.• - . .... !{ .; ; G T. ' i U 'e. �_, I, . r,� ; . rl•. r� ,F: iJ,_;,c T �.>T3 �c x I•i Ci C; 3 ' pj .T V l ,•.r� t IJ : a✓ C, -C ] , Gt U''r -�T'O 441 ' •'f -'r,i �.� r.) ' wT.r ::. T :I r. �.1 �._ �— _-•..—...�Tr. l.3{ 1, i1� ljfTEiJ }' ,j��}. _ hJ i„ '% I f-!' _.C�r� LCy �:aj r:F.".: r � .f;' '•' �?.I7 j i ..:ii. r.if t- 'rR• -mil �: i• l JI. 1•j.i i ii .5 �''�'. 1'{Yi'7 •�• 0 • APPLICATION FOR A MINING PERMIT 2. Total affected acreage to be disturbed during initial year of operation: --CA A f o r tailing d� „ �, -- n —_ _a t i-. r r retention ponds, spillways 3 acres b. Area used for stockpiles 12 acres c. Area used for waste piles 5 acres d. Area used for processing plants and onsite haul roads 15 acres e. Area of mine excavation(s) 53 acres f. TOTAL a-e 88 acres 3. Estimate the maximum amount of land to be disturbed and unreclaimed at any one time during the life of the permit. 88 acres 4. Check acreage to be bonded*: Total affected acreage figure from B2f OR B3 (page 2) whichever is larger, equals acreage to be bonded. (See 15 NCAC 5B.0003 for bond amounts.) 0 - 4.99 acres 10 - 24.99 acres - 9.99 acres A 25 T acres S. a. Will you file a blanket bond or other security covering all of your mining operations in North Carolina? Yes % No b. Have you already filed a blanket bond or other security? Yes % No 6. List any mining permits previously issued to the applicant. Crabtree 92-3. Durham 32-1. Raleigh 92-2. Neverson 98-2. Princeton 51-5, Rocky Mount_3_3-13,Elliot Sand and Gravel 43-3. Cape Fear 43-21, North Durham_32-07, North Orange 68-6. Elm Citv 98-13. Holly Springs 92-13, High Point 41-18 C. PROTECTION OF NATURAL RESOURCES 1. a. Will the operation involve washing the material mined, recycling process water, or other waste water handling? Yes X No If yes, briefly describe all such processes including any chemicals to be used. The crushed stone facility requires the use of water to produce clean stone. The crater is pumped from the secondary settling pond to the plant. Through the use of spraybars and screens the raw material is washed and sized. This water is also used at all transfer points throughout the plant to allay dust. Once used, the water is collected in a series of ditches and pipes and directed back to the primary settling pond. Once the water has flowed through the primary and secondary settling ponds, most of the 3 T3 Cra T. j pe. T 1;tN, 's .1 1 - I If, 4'? 3- ij 4 1, 1 Ty. C3 IVA U 1, 3' G; 0 1,pTZ Z,SfAG,K. 17111 qTn!., Ap v r ty G i it,,. r- T r I-V P 9 1: C. T. 17 ;j o A r T 7 7,(j1: -CC7- 7Tc— -.,t F. i-,5 -6'-i7,- 9 4r_ J t; T i. 6 -J ct l j., r o I:IT mi.,: ir, c t o- i,. �r 4,,r ),i ;i y j p. r f. t :r U T ZL f'f f4 1; J' (7 4 �f T U! 0 13, It,' I) r, ol T L: t n- T il r 1) t, c7 is 0 APPLICATION FOR A MINING PERMIT silt -sized particles of material have settled out, and the water is ready to be reused in the plant. Due to evaporation and loss through material sales, it is necessary to periodically supplement the closed circuit system with water from the pit. b. Will the operation involve dewatering the mine or discharging fresh or waste water from the mine or plant. Yes % No If yes, briefly describe the nature of the discharge and locate all proposed discharge points on your mine map. All water encountered during mining operations is storm water with some minor amounts of ground water encountered during pit excavation. This water is considered fresh water and does not need to be treated. Refer to Plan Sheet HP-1 for the location of the pit dewatering discharge point. c. If you answered yes to either 1a or 1b, provide evidence that you have applied for or obtained a water quality permit from the Division of Environmental Management, Water Quality Section. This site presently has an NPDES discharge permit #NC0003590 which covers pit discharge as well as the closed circuit process water system. Expiration of this permit is May 1993. During renewal of our present NPDES permit, it was decided that a separate Non - Discharge permit is needed and Nello Teer Co. has submitted to the State for this permit. *In lieu of the surety bond required by this section, the operator may file with the Department a cash deposit, negotiable securities, a mortgage of real property acceptable to the Department, or an assignment of a savings account in a North Carolina bank on an assignment form prescribed by the Department. The amount of land disturbed and unreclaimed at any one time must not exceed the bonded amount. 2. a. Will the operation involve crushing or any other air contaminant emissions? Yes X No If yes, indicate evidence that you have applied for or have obtained an air quality permit issued by the Division of Environmental Management, Air Quality Section or local governing body. Crabtree Quarry presently operates under Air Quality Permit Numbers 4149R3 and 4150R2, which expire in March 1992 and these permits are in the process of being renewed. 4 Ili . w 1.j x -t -F 4 L? c- i:. a a I RM 1 J V I L I t) r lus .1 - a i i -, -- in Lit DIP —i o it) 0 IP. ik" 'r al 110 A"i f A h 81! Ill 11 4t c "o, bf r Ri n. LT J L j.1 6 Q T r g f J 1. r APPLICATION FOR A MINING PERMIT b. How will fugitive dust from stockpiles, haul roads, etc. be controlled? A wet suppression system for the plant, as filed with the Division of Environmental Management Air Quality Section, is the primary control for fugitive dust in the plant area. Spray bars and nozzles at transfer points in the processing plant allays any particulate emissions in the plant and stockpile areas. Also, most aggregate products are washed stone gradations with little or no fines. Haul roads and site access roads are also monitored for fugitive dust. As the need arises, a water wagon sprays water along these routes to further inhibit any dust from becoming airborne. 3. Describe in detail the chronological sequence of land disturbing activities and reference the sequence to the mine map(s). Attach additional sheets as needed. See attached sheet. 4. a. How wide a buffer will be maintained between any mining activity and any adjoining property or highway right-of- way? Show all buffers on mine map(s). It is anticipated that no mining or land disturbing activities will occur within 50' of the existing property lines. At present, Mello Teer Company maintains a much larger buffer zone which is bermed and wooded. The present mining plans also show much of this buffered area to remain for the next ten year extension of our permit. This is not to in any way inhibit Teer's right to use the property outside of the 50' Undisturbed Buffer zone if the appropriate plans are submitted to and approved,by the State. It is Teer's practice to maintain as much area as possible in passive use as well as buffer between our operations and the adjoininq property owners. b. Describe other methods to be taken during mining to prevent physical hazard to any neighboring dwelling house, public road, public, commercial or industrial building from any mine excavation. Locate all such structures on the mine map if they are within 300 feet of any proposed excavation. To prevent any physical hazard to neighboring houses or buildings, it has been Teer's policy to restrict all of its pit operations outside of a 300' zone. Mello Teer Company has always used the most modern mining methods in existence to ensure the safety of its employees and neighbors. Mello Teer Company makes it a practice to use non -electric blasting techniques to reduce the possibility if inadvertent blast initiation during thunderstorms. Each shot is seismographed at the closest structure to the site of the blast to +'+ I, ! k u', �; (' - '�j 34i7 ,, *-A>1: F.�:+`+• ,.`.3'j .Ai .. •lr ,Td�rr• � i",I A 11 ! •r n y � r�, , 1'iirt ,.L7i�t SEE . %' },'i�i ,� _ •�i - + 'I , . - - iS• - ,If. t � ►a r I .r, �" j.. i ,T' 1. F. .y ,. "re l r 3 «'-J t••• f- (�• Y" ;' � 1'�, L . a ' t, • s �, d _ � i 3 '� 1 E , a :i j r t . - E 1 ry ',• 'f = '-� � z.T•._ _ nr ,.A-.•.i. ,,. ::s, F�=:+.r' u' . I b ii � jy;1) _ ' ,I ir-dt .I�l .AI '. '•iA c:'i,. _ .i ..•:.' '- ,. .'[' AI P y' - • + a' ' !�'' .F ' _7 1 I' r ! �I III. ! T � - I !. � 1 i 1: tYL- cif- T (i_1(; EJ%1 [ {. � A a � i- e=fl `73 .' :1.":. •� �t'w� L i .r i f, .•S)i.1lrJ + •'G 1:•1',e `� +� {r)1 17A_; r ' '. _ E1'! ui' Tt,1; .j .4,a : ,Cr f'i+{ F .L. 1A'� i :Y1 '.�• rJ' i. .fi.1 rt!:i 1. i d'SE+ + i' , ¢.Alc• J7-rr �•1 ;? 'I: EZ • r 3 �I: �r i ^• ..!;1 -i. - r'' l; A,r ;.r d [1 T11° 'I{1 f, +! 1[ 17 r,. 0 r 1;, , 1 , VA :.r�-i. 1J, i IA! t I' ..,li`lr• 1� ( y 4 T .!f T i$.` [ 3 I''•UI.}. K4 Z.. ;F E. > A•.A:i::', d. A ,II .. j.1 i i .�F +i.r- `t�F. rii''� r •A-i+? ,,.I "if i i:. ,A � � i � •rryg- { yr 1 Q . J fY I ' . �i r • y i • l , •♦ ?_ ..y.. j 1 , 1 r 1, ;:., . ' E" S'] C C, :1 T d' .4 •1:}, Ya Il s`!'-A r.(lii• 1 d� 1' '. 1.1 l�r f � _d' �] i_ L- i"1 ],` •��' -.ire �F.•- �_. �: r - I,•t••E, +,.� r' '_: [:� y..3 ,Jf..'' .. i f A l.r, fl :-i I f3, r L C APPLICATION FOR A MINING PERMIT ensure compliance with approved blast limits. All of our shots are initiated only as the weather permits so that the inversions will not reflect the blast wave onto adjoining property. Nello Teer also leaves enough buffer or passive use area so that there will be no chance of slides which might affect adjoining properties. c. Describe what kind of barricade will be used to prevent inadvertent public entry along any high wall area and when it will be implemented. Access to the property itself is restricted by gates and cables which are kept locked when the quarry is not in operation. During the life of the quarry, barricades of either oversize rock or concrete barriers are used and relocated as the pit is developed. These barricades were established prior to commencement of mining operations and during the stripping of the pit before the stripping depth exceeded ten vertical feet. 5. Describe specific erosion and sediment control measures to be taken during mining to prevent offsite sedimentation (include specific plans for erosion control for mine excavation(s), waste piles, access/mine roads and process areas), and give a detailed sequence of installation. Locate and label all erosion and sediment control measures on the mine map. Engineering designs and calculations shall be required when needed to justify the adequacy of any proposed measures. During the life of the quarry, any cleared land not being used in the mining operation has been seeded for pasture and woodlands. Within the affected area of the mine site, a series of diversion ditches (grass -lined or rip -rapped) have been constructed and maintained to channel all runoff water to settling ponds or sediment basins prior to its release into any stream. The sequence of construction and installation of the permanent erosion control features has been discussed on page 4, question 3, as well as on the erosion control section of the plans. Engineering and design calculations are included with this permit application information. 6 APPLICATION FOR A MINING PERMIT 6. a.Describe methods to prevent landslide or slope instability adjacent to adjoining properties during mining. In order to prevent landslides and/or slope failure adjacent to adjoining properties, cut slopes have been graded on slopes no steeper than 1 1/2 : 1 and fill slopes no steeper than 2:1. In addition, all slopes have been seeded as soon as possible after grading has been completed and treated in accordance with the revegetation plan contained herein. Furthermore, as previously stated in sections 4(a) and 4(b), buffer zones of varying widths have been maintained in areas of existing vegetation, and no mining shall occur within 50 feet of existing property lines. b. In excavation(s) of unconsolidated (non -rock) materials, specify the angle of all slopes including specifications for benching and sloping. The maximum slope within the pit excavation will be 1 1/2:1 in unconsolidated overburden with a 15-foot wide bench every 35 feet of depth and a 20-foot wide bench at the rock/soil interface. c. In hardrock excavations, specify_ proposed bench widths and heights in feet. At Crabtree Quarry, the slope has historically been 1/4:1 in the hardrock excavations with no bench. This slope has been adequate throughout i _ - L _ the _ history _ _ f this S_ the _ 1_ 3_ _ J Li1L�01]C,�ilOut GAe i1lStory O1: L111.`i. t3a.te S311IC:e Li1C S1C�]U�1t 1:5 rC1dL1VC1y uniform and does not have a tendency to slide. The operations on the south side of Crabtree Creek will have 1/4:1 slopes with a 15' wide bench every 35' of vertical height. 7. Are acid producing minerals or soils present? Yes No X If yes, list all such minerals, their relative abundance and indicate their location(s) on the mine map. How will acid water pollution from the excavation, stockpiles and waste areas be controlled? 8. Describe specific plans (including a schedule of implementation) for screening the operation from public view such as maintaining or planting trees, bushes or other vegetation, building berms or other measures. Show the location of all visual screening on the mine map and provide cross -sections through all proposed berms. 7 r . • J 'Ij .IS i � f't_ Y, ly � �' a! .., 1 j,� ' I i r re 1 " • � �Lr ��v !J iili ire i.:�l:r,'i ';i�i :y'j' -r r s y "r, f'; �� � �1, � •lr '. r- 71e} .r � ,r' rl' 1 i= •'3�i' F f,l" - 'j `. { - - - � r I ,' ' ' '� 7.' — - f ( ,� • �. f � �' • � y �" ? • � ' - 1 1' , i I r 1 .. ice. '� n 1 • ' it r • ti• 1 ;. 1 i , - ti , ci i° . . �. f ". i. .� s s .: i i r ''' . �• � - " , � :' , l rl ' �i• . • APPLICATION FOR A MINING PERMIT Crabtree Quarry presently has a combination of visual barrier berms as well as natural vegetation which screens this site from adjoining roads and property owners. Operations on the south side of Crabtree Creek will continue to have natural vegetation as well as visual barrier berms. The site is well screened and it is Nello Teer Company's intent to continue this practice during the next ten year permit period. Cross -sections and plan views of the screened areas for the north and south sides of Crabtree Creek are indicated on the renewal plans. 9. Will explosives be used? Yes X No If yes, specify the types of explosive(s) and describe what precaution(s) will be used to prevent physical hazard to persons or neighboring property from flying rocks or excessive air blasts or ground vibrations. Locate the nearest offsite structure(s) to the proposed excavation(s) on the mine map. 1. Ensign Bickford or comparable nonel initiation system. 2. Anfo premixed powder for dry hole shots. 3. A cap -sensitive high explosive emulsion for wet holes and initiation of Anfo. 4. An electronic initiation system may be substituted for the nonel system if it is deemed a better overall system. Since blasting is an integral part of this operation, each blast is monitored with a seismograph to insure that peak particle velocities and peak overpressures are within limits established -by local, state, and federal authorities. A recording of each blast is made on magnetic tape and is sent to a third party consultant for analysis using the Response Spectrum Velocity Profile (RSVP) technique. As additional precautions, some preliminary seismic studies have been conducted onsite to determine the preferred direction of blasting and.pit development to further lessen the possibility of excessive peak particle velocities during actual mining conditions. 10. a. What is the pre -mining depth (in feet) to the seasonal high and low ground water tables? High ft. Low ft. What is the source(s) of this information? Since this mine was open in the 1940's, this information is not available. However, when installing monitoring wells in the area of the pit, it has been determined that the water table is in excess of 70' deep. These monitoring wells had 20' of overburden and were drilled 50' into rocks. The water supply well for the shop is 375' deep and continues to have a production capacity of 5 gpm. 8 i a1 � i.. •j_ �.. �.: Li-� t)', 'i i' I t1 � � }-' , .'r' .. .� �t 1 ,� ,'1 J' - _i -• A '' 1: . . iE.i r . r i � -lair. +` .' Lr t ! � , r r � :... „f .-,C as a I .L "If { '.: i ','s :. ,. „ Lot .. . '!.� 1 .I. �' � t 3,.'j ... .,-,. (� �:r ! '.�S' .i ,. ` '�(�,�•, tl+� {.. 1 _ .. � f.l:. - 1 i, . 1 t+: Ion Ask ho An 3 APPLICATION FOR A MINING PERMIT b. Will any part of the proposed mine excavation(s) extend below the water table? Yes X No if yes, do you int.anA t^ dAtint er tha Ave -must inn( cz I? Yeg X Un Tf a , yes, what impact, if any, will mine dewatering have on neighboring wells? Locate all existing wells on the mine map that lie within 500 feet of the proposed permit area. Provide data to support any conclusions or statements made. From analysis of the core retrieved from the exploratory drilling and the existing pit, the granite appears to have very little primary permeability. The only means in which water may be transported will be through secondary permeability (i.e. joints, fractures, shears, etc.); however, from core analysis, RQD values are in the 85% to 95% range, below the weathered rock interface, and these joints and fractures do not appear to be interconnected. The surfaces of the fractures and joints show very little evidence of mineralized coatings as a result of water transportation. Removal of the overburden has very little effect on shallow wells in the area since the pit for the most part sits on a topographic high and very little of the recharge area for shallow wells will be disturbed. The overburden materials in the pit area are silts, clays, and sand which would inhibit groundwater migration. 11. Will fuel tanks, solvents, or other chemical reagents be stored on -site? Yes X No If yes, describe these materials and how they will be stored and show the location(s) of all storage facilities on the mine map. Onsite storage of gasoline, diesel fuel, and various oils and greases is necessary to facilitate the operation of various types of equipment needed to produce crushed stone. The bulk storage tanks for fuel, gasoline, and oil,are in approved above -ground storage tanks surrounded by a berm that would contain any leakage or spillage. Grease and other oils not required in bulk quantities are stored in 55 gallon metal drums in bermed areas or at the oil/water separator pit. All empty grease and specialty oil drums are returned to the manufacturer at frequent intervals to alleviate the need for a disposal area. 9 0 0 Is Chronological Sequence The sediment and erosion control features which are existing for the mining area on the north side of Crabtree Creek are adequate to handle the present mining practices at this site. Nello Teer will continue to mine to the limits indicated on the plans and in the annual reclamation reports submitted to your office. The present mining plans on the south side of Crabtree Creek include pit development and implementation of a revised sediment and erosion control plan. This process will require the following construction sequence: 1) Construct gravel construction pad and entrance pad. 2) Extend existing sediment basins 1 & 2 as indicated on EC1 and EC8. 3) Construct temporary sediment traps 1, 2, 3, 4 & 5 as indicated on EC1 and EC8. 4) Clear and grub mining area as indicated on MP1. 5) Clear visual barrier berm area as indicated on MP1. 6) Commence stripping operations in the mining area indicated on MP1. 7) Construct visual barrier berms as indicated on MP1 and EC8 from materials excavated from the mining area. 8) Within 30 days after completion of stripping activities, all disturbed slopes are to be seeded with the appropriate seed mixture as indicated on EC8. 9) In summary, all erosion control measures must be in place prior to commencement of stripping operations. Y.. 'I ... D. RECLAMATION PLAN 1. Describe your intended plan for the reclamation and subsequent use of all affected lands and indicate the general methods to be used in reclaiming this land. This information must be illustrated on a reclamation map. Reclamation of disturbed areas is an integral part of the active quarrying operations. As areas are disturbed, revegetation is in accordance with the Revegetation Plan. Please refer to the initial reclamation plan found in the reclamation section of the plan sheets. The plant site and shop yard will also be graded and revegetated according to the Revegetation Plan. The primary and secondary settling ponds will be filled in and treated in a like manner. The quarry pit itself will be allowed to fill with groundwater and rainwater and can be used to provide water storage and recreation for the local area. 2. a. Is an excavated or impounded body of water to be left as a part of the reclamation? Yes % No If yes, illustrate the location of the body(s) of water on the reclamation map and provide a scaled cross-section(s) through the proposed body(s) of water. Will the body(s) of water be stocked with fish? Yes No g If yes, specify species. It is Nello Teer Company's intent to convert the pits into fresh water supply ponds upon cessation of all mining activities. This water will be sold to local utilities as the need for fresh water arises. b. Describe provisions for prevention of noxious, odious or foul water collecting or remaining in mined areas. Provide details on any permanent water outlets. In those locations of the permit area which will require final dressing_ or gradinq of the surface for reclamation, land surfaces will be graded to lines or grades which will prevent the pooling of water in shallow depressions. All drainage structures to be incorporated into the permanent erosion control plan will be cleaned out and left in a free draining state. Any pipes, culverts, and conduits to remain will be inspected to insure their soundness and will be cleaned out and replaced if necessary. The pit water will be of sufficient depth and size so that noxious or odious conditions should not be of concern. In addition to size, minor amounts of groundwater, as well as surface runoff, continue to infiltrate into the pit maintaining fresh water. f: r 3 i'+ f i_L€• Er !; t ' I r �.. I • �1 _i 2i i, . r i ' ... r1 l {- 4�:1' '1.� 4'.Y fi _1} , ±.. S' . � 1 ')•'... :1, A- a •Ja ;� 1. .ti_ .. y , .. d. ..1.1 �.� �' +'. •.1 I�l, •f .. . 1 .I•� J.J a ?v1 dci f si C :1 1 - -1 fl RECLAMATION PLAN 3. Describe nrnvicinnQ fnr Gafafu f n narcnnc AnH to AHininin" property in all completed excavations in rock including what kind of permanent barricade will be left. The location of the barricade must be shown on the reclamation map. As a safety precaution, a 20-foot wide safety bench between the rock soil interface will be left. Additionally, a permanent fence will be erected around the pit to prevent unauthorized entry. Danger signs will be placed at regular intervals around the pit perimeter to warn of the open pit. 4. a. .Indicate the method(s) of reclamation of overburden, refuse, spoil banks or other such on -site mine waste areas, including specifications for benching and sloping. As overburden is placed in designated waste areas, it is spread and compacted by dozers and the hauling units. Slopes in waste area(s) (and in all embankment areas) will be graded to 2:1 or flatter and revegetated as soon as possible to prevent erosion. Drainage on top of the waste area(s) will be established to prevent pooling and stagnation of water, and to control stormwater runoff. Final reclamation of the waste area(s) will include final top and slope dressing (if required) and revegetation according to the revegetation plan as contained herein. b. Are any processing waste, overburden or other such mine wastes to be disposed of off -site? Yes No X If yes, describe in detail what these wastes are and how they will be disposed. Attach a separate site map(s) showing the location(s) of the disposal area(s). Include all specifications for erosion and sediment control. 5. a. Describe reclamation of processing facilities, stockpile areas, and onsite roadways. Reclamation in these areas will occur in two stages: first, the plant and stockpiles will be removed from the site, followed by the scarifying of these locations and revegetating according to the revegetation plan as contained herein. In addition, any site access roads not utilized in the end use development plan will be treated in the same manner. The erosion control structures in these areas will also be cleaned out and left in good working condition, since they will be incorporated into the end use development of the site. • I '. 7 r-.I ` 1' "?- ' � 1'Ti F. t '� ti-'C' .i,L� -+i.! jf,Ef 1 � ii",� RECLAMATION PLAN b. Will any onsite roadways be left as part of the recla+l ati on? Yes No V if vec identify fv theca on mation? riv... iv a. ii j...v, r. ... .. .. ..iij these ... v�. v.. the reclamation map and provide details on permanent ditch line stabilization. 6. State the method of reclamation of settling ponds and/or sediment control basins. Sediment control basins which will be left in place for future development will be cleaned out and left in good working condition. The primary and secondary settling ponds, and any other erosion control structures which won't be incorporated in the end use plan for the property, will be regraded to the approximate lines and grades of original ground and revegetated according to the criteria as contained in this application. Prior to filling in the ponds, water will be drained from each pond after all silt has settled out. Once this is complete, backfilling will occur. 7. State the method of control of contaminants and disposal of scrap metal, junk machinery, cables, or other such waste products of mining. (Note definition of refuse in The Mining Act of 1971). No off -site generated waste shall be disposed of on the mine site without prior written approval from the N.C. Department of Environment, Health and Natural Resources, Land Quality Section and either the N.C. Department of Human Resources or local governing body. As indicated on the plans, a temporary scrap storage area has been developed at this site, and the scrap material which is developed as a result of mining activities is stored in this area until an independent recycler of these products picks them up. No mine waste products are disposed of at this site. The fuel oil storage tanks and oil and grease tanks are stored above ground and have built in spill containment around them. This is to guard against any possibility of contamination of the soil or groundwater in the unlikely event of a spill or tank rupture. t •i i rr • - _ `i r rl i; ifT •,LJ I �'. f� .fir• , j 1 E ' ri ..• T r, s • • RECLAMATION PLAN 8. Indicate the method of restoration or establishment of any nermanent Hrainarra rhanna7G to a rnnditinn minimi7inn erosion, siltation and other pollution. Give design detail's including typical cross -sections of any permanent channels to be constructed as part of the reclamation plan. Show the location(s) of all permanent channels on the reclamation map. All permanent channels are either lined with rip rap or grass to ensure that they are stabilized and not subject to erosion. These channels will be cleaned out and inspected prior to complete cessation of reclamation activities at the site. Location and design details can be found on sheets R1 & 2 and EC1-8 of the plans and also in the specifications related to the design of these basins and channels. 9. Describe your plan for revegetation or other surface treatment of the affected areas. This plan must include recommendations for time of seeding and the amount and type of seed, fertilizer, lime and mulch per acre and general seeding instructions for permanent revegetation and, if necessary, temporary revegetation. Revegetation utilizing pine seedlings only is not acceptable. NOTE: Revegetation Plan must be approved and signed by one of the following: (a) Authorized representatives of the local Soil and Water Conservation District having jurisdiction over lands in question; (b) Authorized representatives of the Office of Forest Resources, Department of Environment, Health and Natural Resources; (c) County Agricultural Extension chairmen or Research and Extension personnel headquartered at North Carolina State University in the School of Agriculture and Life Sciences; (d) North Carolina licensed landscape architects; (e) Private consulting foresters referred by the Office of Forest Resources, Department of Environment, Health and Natural Resources; (f) Others as may be approved by the Department. LIME - RATE OF APPLICATION: Haximum of 2 tons/acre FERTILIZER - ANALYSIS AND RATE OF APPLICATION: 10--10-10 standard with a maximum application of 1,000 lbs/acre SEED - TYPES(S) AND RATE OF APPLICATION INCLUDING SEEDING SCHEDULE: See plan sheets for seeding types, rate of application, and seeding schedule MULCH - TYPE AND RATE OF APPLICATION: Straw with an application rate of 2 tons/acre OTHER VEGETATIVE COVERS: See plan sheet for information i i f 3,i5.1 It _ r r _ _ y I • E n>•rT xfrRmTrtiv nT nv n E C L71r3(1 '1, Lf 1% r7J(A 1I Revegetat S i g n a t u Title `�j77frflrrr,� CA {Oql P a U i 1;i t - Agenoy Moxia.A—ursd, inc.. ion plan approved byt Date 6A 0 h 1 10. Provide a schedule of raolamation that indicates the sequence of reclamation and approximate time frame. If reclamation is to be accomplished concurrently with mining, then show on the site map segments that are to be mined and reclaimed during each year of the permit. Add drawings showing typical sections or cross -sections and layout of proposed reclamation. It is anticipated that the affected land covered by this dining permit application will be used for quarrying operatiohs beyond the time limit of the initial permit period. It is our intent and goal to establish ongoing reclamation and revagetation activities ma soon as possible after land disturbance activities are dompleted in any phase of the operation. If, however, site reclamation Occurt8u Y41iHy 4uo aurttw,. i oa_ period, the schedule mould be according to the initial Reclamation Flan contained in our plans. Basically, the plant site, shep area, and settling ponds would be restored to the contours shown. The slain entrance road, which will be paved, is scheduled to be obliterated at the cessation of raining operations,s bUt--ert—ttra All areas requiring regrading would be dloped to drain in order to avoid groolinq or water and will be revt,getated to stabilize the area. The approximate time frame for completion would be from six nonthe to eight months in duration. The final item involved in reclamation would be the or c tioe of a security fence around the perimeter of the pit and vottld run concurrently with the final stages of land reclamation in those areas previously mentioned. S. NOTIFICATION Or ADJOINIRd L"DOWNER8 1. The "NOTICE" fora or a facsimile thereof attached to this application must be sent certified or regintered mail to all adjoining (contiguous) landowners indicated on mine map unless another means of notice is approved in advance by the Director, Division of Land Resources, The te-4 "ftr4+w.Vj of u_ti*4rwtion" otta�ched'to this application roust be submitted before the application it considered coeplate. NOTICE Not Applicable Pursuant to provisions G.S. 74-50 of The Mining Act of 1971, notice is hereby given that (Company Name) has applied on to the Land Quality Section, Division (Date) of Land Resources, North Carolina Department of Environment, Health and Natural Resources, P.O. Box 27687, Raleigh, North Carolina 27611 for a surface mining permit to commence mining of (Mineral,Ore) on acres located of (Number) (Miles) (Direction) (Nearest Town) near road in (Road Number/Name) .(Name of County) In accordance with G.S. 74-50, the mine operator is required to make a reasonable effort to notify all owners of record of land contiguous to the proposed site, and to notify the chief administrative officer of the county or municipality in which the site is located. The property owner may file written comment(s) to the Department at the above address within ten (10) days following receipt of this notice or the filing of the application for a permit, whichever is later. Should the Department determine that a significant public interest exists relative to G.S. 74-51, a public hearing will be held in accordance with the Department of Environment, Health and Natural Resources, Mining, Mineral Resources Regulation Title 15 Subchapter 5B, .0011. A copy of the permit application materials are on file and available for public review during normal business hours at the above listed address. For further information call (919) 733-4574. (Date Mailed to Addressee) (Address of Applicant) • .1 ., _ r Y 1 � J z � � c � � f .r • � � � - r r _ , ��, - - _ - S '� � i � .y � � � - , , � ' • -�. i , i � � f ,r r _ ._._...., �__. _ _. _ _ ..,._ - ._ .. _ _ . . - ,r r. r ' � ..c _ _ . �i � i !' ..., �-. � • • AFFIDAVIT OF NOTIFICATION T an r r _ .' applicant, or an agent, or employee of an applicant, for a Mining Permit from the N.C. Department of Environment, Health and Natural Resources, being first duly sworn, do hereby attest that the following are known owners, both private and public, of the land adjoining the proposed mining site and. that notice of the pending application has been caused to be mailed, by certified or registered mail, to said owners at their address shown below, such notice being given on a form provided by the Department: (Name) (Address) (Attach additional list if necessary) I do also attest that the following individual is the chief administrative officer of the county or municipality in which the proposed mining site is located and that notice of the pending application has been caused to be mailed, by certified or registered mail, to said office at the following address: (Name) (Address) The above attestation was made by me while under oath to provide proof satisfactory to the Department that a reasonable effort has been made to notify the owners of record of the adjoining land and the chief administrative officer of the county or municipality in compliance with N.C.G.S. 74-50 and 15 N.C.A.C. 5B .0004(d). I understand that it is the responsibility of the applicant to retain the receipts of mailing showing that the above notices were caused to be mailed and to provide them to the Department upon request. Date Signature of Applicant If person executing Affidavit is an agent or employee of an applicant, provide the following information: (Name of applicant) title of person executing Affidavit) I, a Notary Public of the County of State of North Carolina, do hereby certify that personally appeared before me this day and under oath acknowledged that the above Affidavit was made by him. Witness my hand and notarial seal, this day of 19 of Notary My Commission expires: ,, - � � 1 � ' - .. to , � , � .._ '� � � .. ', � i t � .r... ,- , ' 3 .. • - � ry. '� '� ' F. MAPS 1. Two copies of the county highway maps and two copies of all mine maps shall be submitted with each permit application. County highway maps may be obtained from: Location Department State Highway Commission Raleigh, North Carolina 27602 Clearly mark the location of your mining operation on the county highway maps. 2. Mine maps should be accurate drawings, aerial photographs or enlarged topographic maps of the entire mine area and of a scale sufficient (see minimum requirements listed below) to clearly illustrate the following. a. Property lines of the tract or tracts of land on which the proposed mining activity is to be located including easements and rights -of -way. b. Initial and ultimate limits of clearing and grading. c. Outline of all pits/excavations. d. Outline of stockpile areas. e. Outline of temporary and/or permanent overburden disposal areas. f. Location of processing plants (processing plants may be described as to 'Location and distance from mine if sufficiently far removed) g. Location and name of streams and lakes. h. Outline of settling and/or processing wastewater ponds. i. Location of planned and existing access roads and on -site haul roads. j. Location of planned and existing on -site buildings. k. Location of all proposed sediment and erosion control measures. 1. 100 year floodplain limits. m. Names of owners of record, both public and private, of all adjoining land. n. Map legend: 1. Name of applicant 2. Name of mine 3. North arrow 4. County 5. Scale 6. Date prepared 7. dame and title of person preparing map n , 1. .. - ' _ h. - - - - ,• � E 11 Map scales must, at a minimum, meet the following .., g , .LuA ieS: SITE SIZE (From Page 2, Al) MAP SCALE 0-99 Acres 1 inch=50 feet 100-499 Acres 1 inch=100 feet 500+ Acres 1 inch=200 feet NOTE: THIS APPLICATION WILL NOT BE CONSIDERED COMPLETE WITHOUT ITEMS 2a-n BEING ADEQUATELY ADDRESSED. G. LAND ENTRY AGREEMENT We hereby grant to the Department or its appointed representatives the right of entry and travel upon our lands or operation during regular business hours for the purpose of making necessary field inspections or investigations as may be reasonably required in the administration of this Act. We further grant to the Department or its appointed representatives the right to make whatever entries on the land as may be reasonably necessary and to take whatever actions as may be reasonably necessary in order to carry out reclamation which the operator has failed to complete in the event a bond forfeiture is ordered pursuant to G.S. 74-59. Signature* Print Name: neb Title: Vice -President Mine : Crabtree Quarry Company: Nello L. Teer Company *Signature must be the same as the individual who signed Page 1 of this application for a permit. Return two copies of the completed application and all maps to the appropriate Land Quality Section Regional Office serving your area. (See attached list of Regional Offices). Inquiries regarding the status of an application should be directed to the address listed on the front page of this application form. - E -. W NORTH CAROLINA DEPARTMENT OF NATURAL RESOURCES AND COMMUNITY DEVELOPMENT From Remarks: 0 0-1 Date � g 19� wxs C"'O�A-s ,alb i.-e If)-7*pj7)d, ❑ Note and file ❑ Note and return to me ❑ Note and see me about this ❑ For yo ipproval ❑ P our conversation Par your request F9 Return with more details 41. ACTION [ Note, !1V901s nd for andYour please r'9 ❑ For your Infora Prepare reply for��A ature � p � Y � ❑ Prepare Information for -- - reply ❑ Please answer, with caper M To he filed IMPORTANT Tc Date Time WHILE YOU WERE OUT of �. Phone AREA CODE * NUMBER EXTENSION Message Signed i TELEPHONED I PLEA CALL LLD T SEE 1�IJ WILL CALL II 1l1T T SEE Y11 UNIT ' ETkJRIED YU CALL Dept. of Natural Resources and Community De veloprtint i LLQ TEERO NELLO L. TEER COMPANY, P.O. BOX 1131, DURHAM, NC 27702 USA TEL: 919 682-6191 FAX: 919 688-4898 January 16, 1992 Mr. Tracy Davis NC Dept. of Environment, health and Natural Resources ''� � Land Quality Section �IJA�1T! 512 N. Salisbury Street Raleigh, IBC 28711 Re: Minina Permit Renewal and Update - Crabtree Quarry Wake Co., NC Dear Mr. Davis: It is with pleasure that Nello Teer Company submits this renewal and update application for the above referenced site for your review and approval. Please find enclosed the following information pertinent to this renewal and update process: 1) Mining permit renewal application. 2) Mine plans. 3) Supplemental information concerning stormwater runoff calculations, erosion control structures and channel design. Due to the' continued growth of the Raleigh/Wake Co. market, Nello Veer Company will be continuing its mining operations on the north and, south sides of Crabtree Creek during the.next 10 year permit cycle. A check for $1,000 has been included with this submittal which will cover the $500 renewal fee and 'a $500 fee for alterations to site erosion and sediment control structures. After evaluating our mining operations on the south side of Crabtree Creek, it has become evident r-hat certain. -erosion control structures will have to be altered as we proceed with mining. The design calculations and plans showing these alterations have been prepared by McKim & Creed Consultants and are included with this permit renewal application. Mr. Tracy Davis Page 2 Should you or any of your staff have any questions or require any further information, Please do not hesitate to call me at-1-800-999-6356. Sincerely, NELLO L. TEER COMPANY Steven S. Edgerton, P.G. SSE/dg- Enclosures CC. File r"_1 0 State of North Carolina Department Or Environment, Health, anCl NatUn Division of Land Resources James G. Martin, Governor William W. Cobey, Jr., Secretary January 23, 1992 Memorandum To: Fred Harris Director, Division of Boating and Inland Fishe Wildlife Resources Commission Attention: Habitat Conservation Program From: Tracy E. Davis Mining Specialist Land Quality Section Re: Renewal/Expansion Request Nello L. Teer Company Crabtree Quarry Mining Permit No. 92-03 Wake County Charles H. Gardner Director a t WD Fishe Please find attached for your review a copy of the above referenced request to renew Mining Permit No. 92-03 and allow expansion of mining activities on the south side of Crabtree Creek. Please review this information and advise as to the probability of this operation having unduly adverse effect on wildlife and freshwater fisheries (G. S. 74-51 (2)). Please respond by February 21, 1991 so that we may complete our review of this request within our statutory time limits. As is the case in our review of all mining permit applications, renewals and modifications, this office will carefully review all proposed erosion and sediment control measures to ensure that they are sufficient to restrain erosion and off -site sedimentation. However, any comments your agency can provide regarding effects on wildlife and freshwater fisheries would be greatly appreciated. If your staff wishes to perform a site inspection, it is recommended that they contact Mr. Steven S. Edgerton at (919) 682-6191 to set up a convenient date and time. Your continued cooperation in the review of these type requests is greatly appreciated. Please return all of the attached documents with your officers review comments as this is our only copv of this information. In addition, please send a carbon copv of vour review comments to the applicant for his information. ted\ attachments cc: Mr. John Holley P,O, Box 77687 • Ralelah. N.C. 27611-7687 • Telephone 19191 733-3833 An Equal Opportunity Affirmative Action Employer 0 40 0 • N ELILO L. T EEFR COMPANY A Alember of THE BEAZER GROUP P.O. BOX 1131 DURHAM, N. C. U.S.A. 27702 OFFICE TEL: (919) 682-6191 • TELEX: 6711650 • FAX; 688-4898 May 1, 1992 R E V �` w Mr. Tracv Davis E D NC Dept. ~ of Environment, Health MAY 2 11992 and Natural Resources Land Quality Section P. O. Box 27687,4ND QUALITY SECTlQN Raleigh, NC 27611 Re: Renewal of Crabtree Quarry Mining Permit No. 92-02 Wake County, NC Dear Tracy: Pursuant to your request dated March 20, 1992 on the above referenced site, the following information has been assimilated, which I hope will satisfy your request. Item #1: The 50' minimum undisturbed buffers have been indicated on the revised plan sheets. The only existing exception to this buffer occurs at the stream crossing on Crabtree Creek. The only future encroachments on this 50' buffer zone will occur at the temporary construction entrance and the bridge across Crabtree Creek. Once the pit has been developed, this entrance will be removed and planted with like kind existing vegetation (i.e., pines and hardwoods). According to all engineering calculations, it will be unnecessary to locate any future erosion control structures within the buffer area. Item #2: A construction detail of the rock barrier berm is included on revised sheet HP-1 and will be constructed in accordance with existing HSHA (Hine Safety and Health Administration) specifications under Section 56.9300(A)(B)(CC). The concrete barriers are comparable to NCDOT (Jersey) barriers. Either of these two methods may be employed along the highwall during active mining operations. Item #3: A revised Channel Dimension detail is included on EC-8 of the revised plans. The undercut dimensions for the placement of the rip rap and filter stone can be calculated from the existing chart. r V UIV UGU Iy Vy 0 0 ragePage-� � Item #4: Nello Teer Company, at present, has not chosen a bridge design to be placed across Crabtree Creek. We, therefore, request that a detailed review of the bridge placement and construction details be suspended until Teer settles on a permanent contractor and design. Teer will submit final design specifications and plans to the Department of Land Quality for approval prior to commencing any land disturbing activities associated with the bridge construction. Item #5: The plans have been modified to show an outlet dissipator on plan sheets EC-1 and EC-8. Item #6: The application form is in error and the answers to Questions C.6.b. and D.3. should reflect a 25 ft. safety bench at the rock soil interface. Item #7: The visual barrier berm detailed on EC-8 indicates a height of 7' which will effectively screen the sight from Duraleigh Road. The combination of leaving the existing natural vegetation, the construction of a 7' high visual barrier berm and planting loblolly pine and leyland cypress on the berm will effectively screen these operations from surrounding property owners and Duraleigh Road traffic. An example of how well this type of screening works is seen on the north side of Crabtree Creek, as well as at other Teer operations around the state. The approximate finish grade elevation of the visual barrier berm is located on the revised plan sheet HP-1. Item #8: The additional information requested under this item has been prepared by Stuart Brashear of Vibra Tech Engineers. The Vibra Tech analysis shows that no significant impacts on the surrounding neighbors will occur. It is not anticipated that any modification of Nello Teer Company's blasting procedures will be required due to the proximity of neighboring property on the south side of Crabtree Creek or the location of the sewer outfall. The existing sewer outfall, in areas, is within 150' to 200' of the active mining area, and the closest that this sewer line will be on the south side of the creek will be 200' to 250'. The existing active pit is presently operating within 400' of the Dyak residence, and the southern pit, at its closest point, will 0 • Page 3 be 750' from the Hary Andrews residence. Both of these residences and their locations to the above described areas are shown on SP-1. Due to the increased distances to surrounding structures, it is anticipated that Teer Company's existing blasting program will be sufficient to protect the surrounding neighbors from the effects of blasting. The seismograph monitoring and subsequent analysis of the seismograph data indicates that our blasts are well within the state's requirements, and also within the RSVP requirements of the U.S. Bureau of Hines for each blast. We are aware of the complaints which have been registered by surrounding property owners and Teer is actively working with these residents to educate them about blasting. Item #9: As stated in the previous materials submitted to your office for review, it does not appear, from a hydrologic view, that the pit on the south side of Crabtree Creek will have any effect on the wells in the surrounding properties. The high core recovery and RQD values during exploration indicate a very low permeability and porosity in the deposit. The lack of mineralized zones in the high angle fractures indicates very low secondary porosity. The location of the pit is in a different groundwater recharge area than the surrounding properties. As can be seen by the topography of the site, the recharge area for this pit is separated from adjacent properties by topographic highs and lows which isolate the pit area. Nello Teer Company will install two groundwater observation wells on the south side of Crabtree Creek near the adjacent properties. These wells will be installed to intercept the first water producing aquifer, or 50' into rock, whichever occurs first. A diagram of the well construction details is included for your review and approval. The quarry will monitor the groundwater elevations on a bi- monthly basis three months prior to and during project con struct-i .n After the « a 4-r d ' 7 ; v ..iv■■. a.a■c y.i a, so SL.Lippc^u an' iao rlLaL mining operations are initiated, the wells will be monitored on a monthly basis. These records, along with rainfall data, will be kept at the field office for the duration of the project. Page d Item #10: The N.C. Wildlife Resources Commission recommendations for plantings are included on the revised plan, and Nello Teer Company will contact the Commission when a detailed set of plans are available regarding the bridge construction site. I feel that your questions have been properly addressed. Should you have any questions, please do not hesitate to call me at 1-800-999-6356. Sincerely, NELLO L. TEER COMPANY Steven S. Edgerton, P.G. Enclosures cc: File ,. . -fir... .,'� , r � � � � � 1' i �. Protective Casing Vented 'Nell Cap MOA,kOR1NG WELL CONSTRUCTION Ground Locking Cap Cement Grout Fi11 c, •inch Schedule 40 PVC Well casinn (With threaded joints) Peiletized Sentonite Seal ------- Medium Grain Sand 8 inch Borehole inch PVC Well Screen with -41, 10 Slo;s ClOseu outto,i, RECEIVED MAY 2 11992 LAND QUALITY SECTION NOTE: Surface f LO C r 115; %.ir�q y1 11. Well head to be labied: 'Well is for monitoring and not considered safe for drinking.' PATTERSON EXPLORATION SERVICS- r McKIN4&CREED April 9, 1992 R F �,� V E D Mr. Steve Edgerton ENGINEERS Nello L. Teer Company mAy 2 14 992 P_ n_ Box 1131 PLANNERS Durham, NC 27702 LAND QUTALITY SECTION SURVEYORS Re: Revision for the Crabtree Quarry Renewal and Expansion Plan Dear Steve: As per our conversation concerning the request of additional information from Tracy Davis, (letter dated March 20, 1991), the following items reflect the revisions added to the plans. 1. The following notes were added to drawing no. MP-1 and MP-2. A. Existing variable width buffer to remain undisturbed. B. Existing variable width buffer encroached upon by temporary stream crossing. C. 501 minimum undisturbed buffer. 2. Added the boulder barrier berm detail on drawing no. MP-1. This detail is noted as having boulders placed, spaced and sized in accordance with current M.S.H.A. regulations. 3. The channel details located on drawings EC-8 and RP-2 were modified by dimensioning the stone bedding thickness and noted is the 310 E. JOHNSTON STREET N . C . D . O . T . standard stone specification stone sizes. P.O. BOX 1749 4. This item is to be handled by Nello Teer. SMITHFIELD, NC 27577 PHONE 9191934-7154 FAX 9191828-0501 • 0 Mr. Steve Edgerton April 9, 1992 Page 2 5. An outlet dissipator was designed. The dissipator is located as shown on drawing EC-1 and detailed on drawing EC-8. 6. This item is to be handled by Nello Teer. 7. The height of the berm is 71, this is detailed on drawing EC-8. It is also noted that the visual barrier berm is to be planted with Loblolly pines and Wax Myrtle plants. The planting scheme is denoted on drawing LS-1. 8. This item is to be handled by Nello Teer. 9. This item is to be handled by Nello Teer. 10. The seeding schedule on drawing EC-8 was modified to show planting schedule for revegetation beneficial to wildlife. This was also noted on drawings RP-1 and RP-2. In addition to these modifications, a tree planting detail was added to sheet EC-8. The accompanying blueprints show the above mentioned modifications. Please review these and comment on any additions or deletions required. Thank you. Sincerely, Allen R. Kind, Fm, Project Engineer MCKIM & CREED ENGINEERS, P.A. ARK: dlb cc: Paul C. Embler, Jr., A.S.L.A. Mct<T\4£7CREED • JMr��o State of North Carolina Depalullent of EU-1-0ronlllent, l leallli, ani'l 1�-4aturcu Resources Division of Land Resources James G. Martin, Governor Charles H. Gardner 1hjllUAm w. Cony Jr_; sPcretary March 30, 1992 Director Mr. Robert E. Whitman r�i .L4 Cvi�neii Di ive Raleigh, North Carolina 27612 RE: Nello L. Teer Company Crabtree Quarry Mining Permit No. 92-03 Wake County Dear Mr. Whitman: Thank you for your letter of March 18, 1992 regarding the renewal and expansion request presently under review by this office for the above referenced mining operation in Wake County. Please be advised that before the Department makes a decision to grant or deny this request, the criteria outlined by G.S. 74-51 and 52 of The Mining Act of 1971 will be carefully considered (copy of Act enclosed). A detailed review by this office, and several other state agencies within this Department, will be conducted to consider potential impacts of Nello L. Teer Company's (NLT) operation on the neighboring public, wildlife, water and air quality. In addition to the comprehensive review of the erosion and sedimentation control plan for the site, several other aspects of the mining operation, including a review of visual screening and potential impacts resulting from blasting and mine dewatering activities on nearby structures, will also be thoroughly evaluated. This office requested supplemental information from NLT on March 20, 1992 to obtain additional documentation and studies to provide a comprehensive mine file upon which this office can make a fair and objective decision. The Department feels that it is the responsibility of the applicant, not the State of North Carolina, to incur the time and cost to obtain any comprehensive, technical reports that may be required in order to address the requirements of the Mining Act. The Department requires that such reports be prepared by qualified professionals and that said reports are evaluated by the appropriate personnel within this agency as well as other qualified state agencies that have expertise in the subject matter under review. P.O. Box 27687 • Raleigh, N.C. 27611-7687. • Telephone (919) 733-3833 An Equal Opportunity Affirmative Action Employer 0 0 --Mr. Whitman March 30, 1992 Page 2 Please be assured that this office is sensitive to the public's welfare and will evaluate any information that pertains to the requirements of the Mining Act. The Act does not require this office to notify the surrounding community each time additional information is requested from an applicant. The public is free to review any of our mine files during normal business hours provided that an appointment is made at a mutually convenient date and time with appropriate staff members to ensure that the file is available for review at that time. I would also like to note that concerns such as noise, off - site truck traffic and land use/property values are not covered by the Mining Act. These issues (and any other issues that are not within the jurisdiction of the Mining Act and related state environmental laws) are handled under local zoning authority. G.S. 74-65 of the Mining Act specifically states that a mining permit does not supersede local zoning ordinances. Again, thank you for your interest in this matter. I assure you that the decision on whether to grant or deny NLT's request will be made fairly and objectively on the basis of credible technical information and the law. If you should have any questions on the above, please contact me at (919).733-3833 or Mr. Tracy Davis, Mining Specialist, at (919) 733-4574. Very truly yours, Charles H. Gardner, P.G., P.E. CHG/TED/td Enclosure cc: Mr. Tracy Davis T!!r Tr�hn Li r�l 1 otr 1'11 • VVllll 11V111r 1/ •yV G.x•N,q State of North Carolina Department of Environment, Health, and Natural Resources Division of Land Resources James G, Martln, Govemor Charles H, Gardner William W. Cobey, Jr., Secretary March 30, 1992 Director Mr. Douglas J. Frederick 4405 Dewees Court Raleigh, North Carolina 27612 RE: Nello L. Teer Company Crabtree Quarry Mining Permit No. 92--03 Wake County Dear Mr. Frederick: Thank you for your letter of March 18, 1992 regarding the renewal and expansion request presently under review by this office for the above referenced mining operation in Wake County. Please be advised that before the Department makes a decision to grant or deny this request, your concerns as well as any other concerns within the jurisdiction of G.S. 74-51 and 52 of The Mining Act of 1971 will be carefully considered (copy of Act enclosed). A detailed review by this office, and several other state agencies within this Department, will be conducted to consider potential impacts of Nello L. Teer Company's (NLT) operation on the neighboring public, wildlife, water and air quality. In addition to the comprehensive review of the erosion and sedimentation control plan for the site, several other aspects of the mining operation, including a review of visual screening and potential impacts resulting from blasting and mine dewatering activities on nearby structures, will also be thoroughly evaluated. Concerns not covered by the Mining Act and related state environmental laws, such as off -site truck traffic, noise and land use/property values, are handled under local zoning authority. G.S-. 74-65 of the Mining Act specifically states that a mining permit does not supersede local zoning ordinances. P.O. Sox 27687 • Raleigh, N.C. 27611-7687 • Telephone (919) 733-3833 An Equal opportunity Affirmative Action Employer :7 0 Mr. Frederick March 30, 1992 Page 2, Again, thank you for your interest in you that the decision on whether to gran will be made fairly and objectively on technical information and the law. T questions on the above, please contact me TED/td Enclosure CC. Mr. John Holley this matter. T assure t or deny NLT's request the basis of credible you should have any at (919) 733-4574. Sincerely, A -racy Davis, E.T.T. Minin pecialist Land Quality Section State of North Carolina Department of Environment, Health, and Natural Resources Division of Land Resources James G. Martin, Governor Charles 11. Gardric-. William W. Cobey, Jr., Secretary March 30, 1992 Director Ms. Jill Bumgarner Heaton 4700 Connell Drive Raleigh, North Carolina 27612 RE: Nello L. Teer Company Crabtree Quarry Mining Permit No. 92-03 Wake County Dear Ms. Heaton: Thank you for your letter of March 18, 1992 regarding the renewal and expansion request presently under review by this office for the above referenced mining operation in Wake County. Please be advised that before the Department makes a decision to grant or deny this request, your concerns as well as any other concerns within the jurisdiction of G.S. 74-51 and 52 of The Mining Act of 1971 will be carefully considered (copy of Act enclosed) . A detailed review by this office, and several other state agencies within this Department, will be conducted to consider potential impacts of Nello L. Teer Company's (NLT) operation on the neighboring public, wildlife, water and air quality. In addition to the comprehensive review of the erosion and sedimentation control plan for the site, several other aspects of the mining operation, including a review of visual screening and potential impacts resulting from blasting and mine dewatering activities on nearby structures, will also be thoroughly evaluated. Concerns not covered by the Mining Act and related state environmental laws, such as off -site truck traffic, noise and land use/property values, are handled under local zoning authority. G.S. 74-65 of the Mining Act specifically states that a mining permit does not supersede local zoning ordinances. P.O. Box 27687 • RAlelah, N.C. 27611-7687 • Telephone (919) 733-3833 An Equal Opportunity Aftmadve Action Employer Ms. Heaton March 30, 1992 Page 2 Again, thank you you. that the decision will be made fairly technical information questions on the above TED/td Enclosure cc: Mr. John Holley for your interest in on whether to gran and objectively on and the law. I please contact me this matter. I assure t or deny NLT's request the basis of credible f you should have any at (919) 733-4574. Sincerely, J racy Davis, E.I.T. Mining pecialist Land Quality Section dµyo Y MR C GW. State of North Carolina rNcar,nr+r"AnIn+ r%F Fn%jirr,nma-nt Himnith anr{ Khi irral Rpcxv1rrpS Division of sand Resources James G_ Martin, Govemor Charles H. Gardner William W. Cobey, Jr., Secretary March 30, 1992 Director Mr. and Mrs. Victor B. Sydnor 4301 Azalea Drive Raleigh, North Carolina 27612 RE: Nello L. Teer Company Crabtree Quarry Mining Permit No. 92--03 Wake County Dear Mr. and Mrs. Sydnor: Thank you for your letter of March 18, 1992 regarding the renewal and expansion request presently under review by this office for the above referenced mining operation in Wake County. Please be advised that before the Department makes a decision to grant or deny this request, your concerns as well as any other %oiicirrisS watiiaii tiie jur-Ls"-LlU_L of G.S. 74-J1 anl' JL OL 111 111f1111g Act of 1971 will be carefully considered (copy of Act enclosed). A detailed review by this office, and several other state agencies within this Department, will be conducted to consider potential impacts of Nello L. Teer Company's (NLT) operation on the neighboring public, wildlife, water and air quality. In addition to the comprehensive review of the erosion and sedimentation control plan for the site, several other aspects of the mining operation, including a review of visual screening and potential impacts resulting from blasting and mine dewatering activities on nearby structures, will also be thoroughly evaluated. Concerns not covered by the Mining Act and related state Environmental laws, such as off -site truck traffic; noise and land use/property values, are handled under local, zoning authority. G.S. 74--65 of the Mining Act specifically states that a mining permit does not supersede local zoning ordinances. P.o. Box 27687 • Raleigh. N.C. 27611-7687. • Telephone (919) 733-3833 An Equal Opportunity Affirmative Action Employer 0 is Mr. and Mrs. Sydnor March 30, 1992 Page 2 Again, thank you you that the decision will be made fairly technical information questions on the above TED/td Enclosure cc: Mr. John Holley for your interest in on whether to gran and objectively on and the law. I please contact me f this matter. I assure t or deny NLT's request the basis of credible you should have any at (919) 733-4574. Sincerely, Iy Davis, E.I.T. pecialist Land Quality Section 4 State of North Carolina Department of Environment, Health, and Natural Resources Division of Land Resources James G. Martin, Governor Charles H. Garner William W. Cobey, Jr., Secretary March 30, 1992 Director Ms. Pennie G. Gettinger 4209 Azalea Drive Raleigh, North Carolina 27612 RE: Nello L. Teer Company Crabtree Quarry Mining Permit No. 92-03 Wake County Dear Ms. Gettinger: Thank you for your letter of March 18, 1992 regarding the renewal and expdansion request nresently undc_r revi caw by this of fi ce for the above referencemining operation in Wake County. Please be advised that before the Department makes a decision to grant or deny this request, your concerns as well as any other concerns within the jurisdiction of G.S. 74-51 and 52 of The Mining Act of 1971 will be carefully considered (copy of Act enclosed). A detailed review by this office, and several other state agencies within this Department, will be conducted to consider potential impacts of Nello L. Teer Company's (NLT) operation on the neighboring public, wildlife, water and air quality. In addition to the comprehensive review of the erosion and sedimentation control plan for the site, several other aspects of the mining operation, including a review of visual screening and potential impacts resulting from blasting and mine dewatering activities on nearby structures, will also be thoroughly evaluated. Concerns not covered by the Mining Act and related state environmental laws, such as off -site truck traffic, noise and land use/property values, are handled under local zoning authority. G.S. 74-65 of the Mining Act specifically states that a mining permit does not supersede local zoning ordinances. P.o, Box 27687 • Raleigh, N.C. 77611-76R7 • Telephone (919) 733-3833 An Equal Opportunity Afiirmadve Action Employer Ms. Gettinger March 30, 1992 Page 2 Again, thank you you that the decision will be made fairly technical information questions on the above TED/td Enclosure cc: Mr. John Holley for your interest in on whether to gran and objectively on and the law. if please contact me this matter. T assure t or deny NLT's request the basis of credible you should have any at (919) 733-4574. sincerely, Tracy Davis, E.T.T. Mining pecia'list Land Quality Section _ _r 2 �,MA.,'✓• _, . i�� / ' ll, —` - 1 6w.ovI t `/ • �//i� — *v►zsvz�� l/ � .y i r.' . �•4 r f � r +...►0 /`I ^•/ =7 /,j+ "' � � � 0 Ailm MAN& ,. / I i MA ,� _ ...�� _ ._ ._�.y .. . _ _ , . ,� . . _ . ,, .. �- �� -� {' � s � 4 F. i' i 4 1#` I � � . _i � ' �. i� � _ i •�i _ '� .. f' � - � � ,• �� � _ , .. . ;: �� , jjj �I; 5� I_ • REAR 2 3 '92 DIV. LAND RES. March 18, 1992 Mr. C. H. Gardner, Director Dent. of Environmental Health & Natural Resources Division of Land Resources POB 27687 Raleigh, NC 27611-7687 Dear Mr. Gardner: Recently I visited Mr. Tracy Davis, together with Bob Whitman and Bill Campbell, for the purpose of discussing the vibration and noise fields produced by the Nello L. Teer Quarry located on Duraleigh road. During our discussions several issues and concerns were raised which I would like to address at this time. It seems, in reviewing Nello L Tee--'-- YG1IYll/++�} � a L . �iaaju�aL LV EJC�JQIIU the existing quarry, that your department has not seen fit to obtain, and to make available for review, professional advice as to the possible negative impacts that the additional ground vibration and air conducted noise may have on the surrounding "human" population as a result of the new quarry. I believe such an omission is partly due to inadequate training, or human sensitivity, on the part of your staff concerning these matters. During my discussions with Mr. Davis and Mr. Nevils, it is obvious that neither has sufficient background training in the effects of noise and vibration areas, in the proper measurement of ground vibration and air conducted noise, or in the interpretation of the data presented to them by Nello L. Teer in terms of their importance relative to potential effects on the surrounding community. After all, if their training was sufficient to address these areas, then the noise and vibration issues would have been adequately addressed, documented and made available to the affected co lun�..Y i- 4-l. t ,m prior to arly consideration of Nello L. Teer's request to expand the existing quarry. It seems that our department has not even considered the rr-,-. - C to ' kv-�} i - l .-.ram.-.rrvr 4'rT;.rhivh the cumulative efL.Lfec.,: L.S of exposure L. VIJJL Q l__L yCl cyyciyY ..v homes in the Oak Park area have obviously been and will continue to be exposed. This concept is well established with respect to other noise and vibration metrics. As one who has taught the effects of noise and vibration on man and noise and vibration control for over twenty-five years, I am really appalled at your department's lack of capability and seemingly insensitivity to the potential effects of allowing Nello L. Teer the option of expanding its present facilities. I am even more concerned that fellow state employees are not more sensitive to the welfare of the citizens of North Carolina in terms of the potential negative effects of noise and vibration, at least, in terms of _your efforts to date with respect to Nello L. Teer's request to expand the existing quarry on Duraleigh road. It is obvious that you should del-:y issuing a new permit to Nello L. Teer until such time that your department has addressed the above issues. If you wish to contact me with respect to the contents of this letter, you may do so at the following address, telephone number or FAX number: Larry H. Royster 4706 Connell Drive Raleigh, NC 27612 782-1624 - FAX 781--2396 Sincerely, Larry H. Royster, Ph.D. Fellow, Acoustical Society Of America C:\Professi\Corresp\GARDNERI (1 OF 2) 0 R EC1EIV!E. D DA.TE: MARCH 18 ,1992 FROM: ROBERT E.WHITMA.N MAR 2 3 '92 DIV. LAND RES. 4712 CONNELL DRIVE RA.LEIGH,N.C. 27612 TO: MR.C.H.GA.RDNER DIRECTOR DEPT.OF ENVIRONMENTAL HEALTH & NA.TURA.L RESOURCES DIVISION OF LA.ND RESOURCES P.O.BOX 27687 RAT.EIGH, n?. C , 27611-76R7 CR SUBJECT:ABTREE QUARRY MINING PERMIT NO. 92-03 WAKE COUNTY REFERENCE: (1).MY COMPLA.INT TO MR.TRA.CY DA.VIS,JANUARY 30,1992, CONCERNING A SEVERE SHOCK FELT IN MY HOME, OBVIOUSLY,EMANATING FROM THE NELLO—TEER QUARRY ON THAT DATE. (2).MR.DA.VIS' LETTERS OF FEBRUA.RY 6 AND MARCH 9,1992 CONCERNING REFERENCE NO.(1). (3).MEETING WITH MR.DA.VIS A.ND MR.NEVILS IN ROOM 519 A.RCHDA.LE BUILDING ON MARCH 16,1992.(MR.LA.RRY ROYSTER A.ND MR.WILLIA.M CA.MPBELL,A.LSO CONCERNED RESIDENTS OF OAK PA.RK,WERE IN ATTENDANCE) . I A.M CONFIDENT MR.DA.VIS AND MR.NEVILS HAVE REVEIWED WITH YOU THE NATURE AND DETAILS OF THE REFERENCED COMPLAINTS A.ND FURTHER DISCUSSION IN THE REFERENCED MEETING.A.S I UNDERSTAND IT,MR. NEVILS ADVISED YOU OF THE MEETING A.ND REQUESTED YOUR A.TTENDA.NCE BUT YOU WERE ATTENDING (CHAIRING) ANOTHER MEETING A.ND UNA.BLE TO ATTEND. I,PERSONA.LLY,LEFT THE MEETING WITH MORE CONCERNS THAN WHEN I ENTERED. FOR INSTANCE: (I , T AM NnT AT A.T.T. CFRTA.TN THF. MFA.-,TTRFMFNrP PRC)rFT1jTRES AND METHODS USED IN DETERMINING "BLA.STING INTENSITIES" REFLECT A.PPROPRIETLY THE EFFECTS ON STRUCTURES (RESIDENCES PRIMARILY) IN THE OAK PARK A.REA..I WOULD BE CONCERNED AS TO THE LOCATION OR POSITION OF THE PRIMA.RY MEASURING DEVICES , PREPA.RA.TION A.ND PROCESSING OF THAT DATA A.ND ESTA.BLISHING LIMITS(SEVERITY)A.ND r-� HOW THOSE LIMITS APPLY TO THIS SPECIFIC AREA.. (2):THERE SEEMS TO BE NO CONCERN FOR "LONG TERMEFFECTS" OR POSSIBLY "FA.TIGUE" WOULD BE MORE DESCRIPTIVE,WITH CONTINUED "SEVERE SHOTS"ON NEARBY STRUCTURES.OUR HOME HAS BEEN EXPOSED TO TWENTY SIX YEARS OF REPETITIVE, RATHER INTENSE SHOCKS,AN RECENTLY BEEN_SHOWING NEW "HA.IR LINE CRACKS"IN BOTH BRICK A.ND INTERNAL WALLS, NOT INDICA.TIVE,IN MY JUDGMENT A.ND EXPERIENCE WITH THIS BUILDING,OF NORMAL SETTLING "CRA.CKS". (3).WE WERE ALSO SUPRISED TO DISCOVER THAT THE "RENEWAL" PERMIT WOULD ALSO INCLUDE; THE A.REA. ON THE OTHER STDE OF CRA.BTREE CREEK,ALLOWING A. SIMILA.R OPERA.TION ON THAT STTE.IT SEEMS TO ME THAT THIS POSES A TOTALLY NEW POTENTIAL EFFECT ON THIS LOCAL ENVIRONMENT IN THAT THERE WILL NOW BE,EFFECTIVELY,A. LINE OF SIGHT FROM THE MINING AREA TO MANY MORE STRUCTURES. • s (2 OF 2) I'M SORRY IF THIS SEEMS TO BE RATHER WORDY,TIRESOME AND POSSIBLY EVEN "CRITICAL" BUT I ASSURE YOU THA.T THE CONTENTS ARE MEANT TO -MV TNT ('nMPT-ETE SINCERITY AND EXPRESSED TO THE BEST OF MY ABILITY L L .1. 1. v v a•ll .0 -+ t AT THIS TIME. IN CLOSING,I A.M EXPECTING YOU A.ND YOUR DEDICATED STAFF TO EMPLOY WHATEVER EXPERTISE,CURRENTLY A.VA.ILA.BLE TECHNOLOGY A.ND UTILIZATION OF ALL RECORDS AND DA.TA.,BOTH CURRENT A.ND HISTORICAL TO INSURE THAT THE OAK PARK A.ND OTHER SURROUNDING PROPERTIES An PP,OFEP,LY PROTECTED FROM THE INHERENT A.ND POTENTIAL EXPOSURE TO DA.MA.GE FROM CONTINUED A.ND PROBABLE EXPA.NDED "SEVERE"BLASTING EFFECTS EMANATING FROM THE SUBJECT QUA.RRY. BY THE WAY,MR,DAVIS;TN HIS MEMO TO MR.EDGERTON ON FEBRUA.RY 6, suggested he contact me for discussion AND POSSIBLY INSTALL A. SEISMOGRAPH IN MY HOME. HE HA.S MADE NO SUCH CONTACT. REW/bbw SINCERELY, cc; W.CA.MPBELL T.DAVIS M.NEVILS E a-9 L.ROYSTER 0 (1 OF 2) DATE: MARCH 18,1992 FROM: ROBERT E.WHITMA.N 4712 CONNELL DRIVE RA.LEIGH,N.C. 27612 TO: MR.C.H.GA.RDNER DIRECTOR DEPT.OF ENVIRONMENTAL HEALTH & NATURAL RESOURCES DIVISION OF LA.ND RESOURCES P.O.BOX 27687 BALEIGH , N . C . 27611— 0/8 SUBJECT:CRABTREE QUARRY MINING PERMIT NO. 92-03 WAKE COUNTY REFERENCE: (1).MY COMPLAINT TO MR.TRA.CY DAVIS,JANUARY 30,1992, CONCERNING A. SEVERE SHOCK FELT IN MY HOME, OBVIOUSLY , EMA.NATING FROM THE NELLO-TEER QUARRY ON THAT DATE. (2).MR. DA.VIS' LETTERS OF FEBRUA.RY 6 AND MARCH 9,1992 CONCERNING REFERENCE NO.(l). (3).MEETING WITH MR.DA.VIS A.ND MR.NEVILS IN ROOM 519 ARCHDALE BUILDING ON MARCH 16,1992.(MR.LA.RRY ROYSTER A.ND MR.WILLIAM CAMPBELL,A.LSO CONCERNED RESIDENTS OF OAK PARK,WERE IN ATTENDANCE). I AM CONFIDENT MR.DA.VIS A.ND MR.NEVILS HAVE REVEIWED WITH YOU THE NATURE A.ND DETA.ILS OF THE REFERENCED COMPLA.INTS A.ND FURTHER DISCUSSION IN THE REFERENCED MEETING -AS I UNDERSTAND IT,MR. NEVILS ADVISED YOU OF THE MEETING A.ND REQUESTED YOUR A.TTENDA.NCE BUT YOU WERE ATTENDING (CHAIRING) ANOTHER MEETING A.ND UNABLE TO ATTEND. I,PERSONA.LLY,LEFT THE MEETING WITH MORE CONCERNS THA.N WHEN I ENTERED. FOR INSTANCE: (•7 1 T nnrr Arnm AM hTT nL'DMATAT rnU' DflPACTTRP1%AW M ROCPTITTPPC kl f . 1 n.lr} lVV1 n.i n.-J.L) 1J111kln,.LLY 1I1L 1+SLIT,.JV11Ll.+,Ll.l F.,OCEDURES AND METHODS USED IN DETERMINING "BLASTING INTENSITIES" REFLECT A.PPROPRIETLY THE EFFECTS ON STRUCTURES (RESIDENCES PRIMARILY) IN THE OAK PARK A.REA..I WOULD BE CONCERNED AS TO THE LOCATION OR POSITION OF THE PRIMA.RY MEA.SURING DEVICES,PREPA.RATION A.ND PROCESSING OF THAT DATA AND ESTABLISHING LIMITS(SEVERITY)AND HOW THOSE LIMITS APPLY TO THIS SPECIFIC AREA.. (2).THERE SEEMS TO BE NO CONCERN FOR "LONG TERMEFFECTS" OR POSSIBLY "FATIGUE" WOULD BE MORE DESCRIPTIVE,WITH CONTINUED "SEVERE SHOTS"ON NEARBY STRUCTURES.OUR HOME HA.S BEEN EXPOSED TO TWENTY SIX YEARS OF REPETITIVE, RATHER INTENSE SHOCKS,A.N RECENTLY BEEN SHOWING NEW "HA.IR LINE CRACKS"IN BOTH BRICK A.ND INTERNAL WALLS, NOT INDICA.TIVE,IN MY JUDGMENT AND EXPERIENCE WITH THIS BUILDING,OF NORMAL SETTLING "CRACKS". (3).WE WERE ALSO SUPRISED TO DISCOVER THAT THE "RENEWAL" PERMIT WOULD ALSO INCLUDE THE AREA. ON THE OTHER SIDE OF CRA.BTREE CREEK,ALLOWING A SIMILAR OPERATION ON THA.T SITE.IT SEEMS TO ME THAT THIS POSES A. TOTALLY NEW POTENTIAL EFFECT ON THIS LOCAL ENVIRONMENT IN THAT THERE WILL NOW BE,EFFECTIVELY,A. LINE OF SIGHT FROM THE MINING AREA. TO MANY MORE STRUCTURES. (2 OF 2) I'M SORRY IF THIS SEEMS TO BE RATHER WORDY,TIRESOME AND POSSIBLY EVEN "CRITICAL" BUT I ASSURE YOU THAT THE CONTENTS ARE MEA.NT TO BE IN COMPLETE SINCERITY A.ND EXPRESSED TO THE BEST OF MY A.BILITY A.T THIS TIME. IN CLOSING,I AM EXPECTING YOU A.ND YOUR DEDICA.TED STAFF TO EMPLOY WHATEVER EXPERTISE, CURRENTLY A.VA.ILABLE TECHNOLOGY A,ND UTILIZA.TION OF ALL RECORDS A.ND DA.TA,BOTH CURRENT AND HISTORICAL TO INSURE THA.T THE OAK PARK AND OTHER SURROUNDING PROPERTIES A.RE PROPERLY PROTECTED FROM THE INHERENT A.ND POTENTIAL EXPOSURE TO DAMAGE FROM CONTINUED A.ND PROBABLE EXPANDED "SEVERE"BLASTING EFFECTS EMA.NA,TING FROM THE SUBJECT QUARRY. BY THE WA.Y,MR.DA.VIS,IN HIS MEMO TO MR.EDGERTON ON FEBRUA.RY 6, suggested he contact me for discussion A.ND POSSIBLY INSTALL A. SEISMOGRAPH IN MY HOME. HE HAS MADE NO SUCH CONTACT. REW/bbw SINCERELY, cc' W.CAMPBELL ✓ T . DA.VIS M.NEVILS gkp—�� L.ROYSTER (1 OF 2) DATE: MARCH 18,1992 FROM: ROBERT E.WHITMA.N 4712 CONNELL DRIVE. RA.LEIGH,N.C. 27612 %) Pd TO: MR . C . H . GA RDNER DIRECTOR DEPT.OF ENVIRONMENTAL HEALTH & NATURAL RESOURCES DIVISION OF LAND RESOURCES P.O.BOX 27687 RALEIGH,N.C. 27611--7687 SUBJECT:CRABTREE QUARRY MINING PERMIT NO. 92--03 WAKE COUNTY REFERENCE: (1).MY COMPLAINT TO MR.TRACY DAVIS,JA.NUA.RY 30,1992, CONCERNING A. SEVERE SHOCK FELT IN MY HOME, OBVIOUSLY,EMA.NA.TING FROM THE NELLO-TEER QUARRY ON THAT DATE. (2).MR.DA.VIS' LETTERS OF FEBRUA.RY 6 AND MARCH 9,1992 CONCERNING REFERENCE NO.(1). (3).MEETING WITH MR.DA.VIS AND MR.NEVILS IN ROOM 519 A.RCHDA.LE BUILDING ON MARCH 16,1992.(MR.LARRY ROYSTER A.ND MR . WILLIA.M CA.MPBELL , A.LSO CONCERNED RESIDENTS OF OAK PA.RK,WERE IN A.TTENDA.NCE). I AM CONFIDENT MR.DA.VIS A.ND MR.NEVILS HAVE REVEIWED WITH YOU THE NATURE AND DETAILS OF THE REFERENCED COMPLAINTS A.ND FURTHER DISCUSSION IN THE REFERENCED MEETING -AS I UNDERSTAND IT,MR. NEVILS ADVISED YOU OF THE MEETING AND REQUESTED YOUR ATTENDANCE BUT YOU WERE ATTENDING (CHA.IRING) ANOTHER MEETING AND UNABLE TO ATTEND. I,PERSONALLY,LEFT THE MEETING WITH MORE CONCERNS THAN WHEN I ENTERED. FOR INSTANCE: (1),I AM NOT AT ALL CERTA.IN THE MEASUREMENT PROCEDURES. AND METHODS USED IN DETERMINING "BLA.STING INTENSITIES" REFLECT A.PPROPRIETLY THE EFFECTS ON STRUCTURES (RESIDENCES PRIMARILY) IN THE OAK PARK A.REA.I WOULD BE CONCERNED AS TO THE LOCATION OR POSITION OF THE PRIMARY MEASURING DEVICES,PREPA.RA.TION AND PROCESSING OF THAT DATA. AND ESTABLISHING LIMITS(SEVERITY)A.ND HOW THOSE LIMITS APPLY TO THIS SPECIFIC AREA.. (2).THERE SEEMS TO BE NO CONCERN FOR "LONG TERMEFFECTS" OR POSSIBLY "FATIGUE" WOULD BE MORE DESCRIPTIVE,WITH CONTINUED "SEVERE SHOTS"ON NEARBY STRUCTURES.OUR HOME HAS BEEN EXPOSED TO TWENTY SIX YEARS OF REPETITIVE, RATHER INTENSE SHOCKS,AN RECENTLY BEEN SHOWING NEW "HA.IR LINE CRACKS"IN BOTH BRICK AND INTERNAL WALLS, NOT INDICA.TIVE,IN MY JUDGMENT AND EXPERIENCE WITH THIS BUILDING,OF NORMAL SETTLING "CRA.CKS". (3).WE WERE ALSO SUPRISED TO DISCOVER THAT THE "RENEWAL" PERMIT WOULD ALSO INCLUDE. THE AREA. ON THE OTHER SIDE OF CRA.BTREE CREEK,ALLOWING A. SIMILAR OPERATION ON THAT SITE.IT SEEMS TO ME THAT THIS POSES A. TOTALLY NEW POTENTIAL EFFECT ON THIS LOCAL ENVIRONMENT IN THAT THERE WILL NOW BE,EFFECTIVELY,A. LINE OF SIGHT FROM THE MINING AREA. TO MANY MORE STRUCTURES. (2 OF 2) I'M SORRY IF THIS SEEMS TO BE RATHER WORDY,TIRESOME A,ND POSSIBLY EVEN "CRITICA.L" BUT I ASSURE YOU THAT THE CONTENTS ARE MEANT TO BE IN COMPLETE SINCERITY AND EXPRESSED TO THE BEST OF MY ABILITY AT THIS TIME. IN CLOSING,I AM EXPECTING YOU AND YOUR DEDICA.TED STAFF TO EMPLOY WHA.TEVER EXPERTISE, CURRENTLY A.VA.ILA.BLE TECHNOLOGY AND UTILIZATION OF ALL RECORDS A.ND DA.TA.,BOTH CURRENT A.ND HISTORICAL TO INSURE THAT THE OAK PARK AND OTHER SURROUNDING PROPERTIES A.RE PROPERLY PROTECTED FROM THE INHERENT A.ND POTENTIAL EXPOSURE TO DAMAGE FROM CONTINUED AND PROBABLE EXPANDED "SEVERE"BLASTING EFFECTS EMANATING FROM THE SUBJECT QUARRY. BY THE WA.Y,MR.DAVIS,IN HIS MEMO TO MR.EDGERTON ON FEBRUARY 6, suggested he contact me for discussion A.ND POSSIBLY INSTALL A. SEISMOGRAPH IN MY HOME. HE HAS MADE NO SUCH CONTACT. REW/bbw SINCERELY, cc; W.CAMPBELL T . DA.VIS ✓ M.NEVILS L.ROYSTER REC"iblED MAR 1 9 '92, 4405 Dewees Ct. DIV. LAND RES. Raleigh, NC 27612 March 18, 1992 Mr. Tracy E. Davis Mining Specialist, Land Quality Division Division of Land Resources Department of Environment, Health & Natural Resources P. Q. Box 27687 Raleigh, NC 27611-7687 Dear Mr. Davis: This letter is written concerning the pending renewal of the mining permit (No. 92-03) for the Nello L. Teer Company, Crabtree Quarry. I am opposed to the issuance of this permit if the permit allows for expansion of the present mine across Crabtree Creek to the south. Such expansion is also opposed by the City of Raleigh and the City Council has recently reiterated its unequivocal opposition for the record. In addition, nearby residents have long voiced complaints about the ongoing quarrying activity and the noise and structural damage they have endured. Clearly, this quarrying operation is incompatible with existing and expanding residential development in the area. Legal council for the City plus independent attorneys.have opinioned that any expansion of the existing mine south of Crabtree Creek is a violation of the existing mining permit and should now be allowed. I believe there should be, at a minimum, a public hearing on this permit renewal. Sincerely, Douglas J. Frederick cc: Mr. Charles H. Gardner, Director Division of Land Resources AFC,/-, 041 Mr. Tracy E. Davis Mining Specialist, Land Quality Division Division of Land Resources Department of Environment, Health & Natural Resources P. V. Box 27687 Raleigh, NC 27611-7687 Dear Mr. Davis: 4405 Dewees Ct. Raleigh, NC 27612 March 18, 1992 This letter is written concerning the pending renewal of the mining permit (No. 92-03) for the Nello L. Teer Company, Crabtree Quarry. I am opposed to the issuance of this permit if the permit allows for expansion of the present mine across Crabtree Creek to the south. Such expansion is also opposed by the City of Raleigh and the City Council has recently reiterated its unequivocal opposition for the record. In addition, nearby residents have long voiced complaints about the ongoing quarrying activity and the noise and structural damage they have endured. Clearly, this quarrying operation is incompatible with existing and expanding residential development in the area. Legal council for the City plus independent attorneys have opinioned that any expansion of the existing mine south of Crabtree Creek is a violation of the existing mining permit and should not be allowed. I believe there should be, at a minimum, a public hearing on this permit renewal. Sincerely_ , Douglas J. Frederick cc: Mr. Charles H. Gardner, Director Division of Land Resources E R E C E451e Ct. Raleigh, NC 7171 MAR i 9 1992 March 18, 1992 LA'YD QUALITY SEC7lOM Mr. Tracy E. Davis Mining Specialist, Land Quality Division Division of Land Resources Department of Environment, Health & Natural Resources P. O. Box 27687 Raleigh, NC 27611-7687 Dear Mr. Davis: This letter is written concerning the pending renewal of the mining permit (No. 92-03) for the Nello L. Teer Company, Crabtree Quarry. I am opposed to the issuance of this permit if the permit allows for expansion of the present mine across Crabtree Creek to the south. Such expansion is also opposed by the City of Raleigh and the City Council has recently reiterated its unequivocal opposition for the record. In addition, nearby residents have long voiced complaints about the ongoing quarrying activity and the noise and structural damage they have endured. Clearly, this quarrying operation is incompatible with existing and expanding residential development in the area. Legal council for the City plus independent attorneys have opinioned that any expansion of the existing mine south of Crabtree Creek is a violation of the existing mining permit and should now be allowed. I believe there should be, at a minimum, a public hearing on this permit renewal. Sincerely,] r( �C? J Douglas J. Frederick cc: Mr. Charles H. Gardner, Director Division of Land Resources 0 0 RECEIVED Jill Bumgarner Heaton 4700 Connell Drive Dnle;r h Klnr+h i�rnlin� `)7F.1 7 March 18, 1992 Mr. Tracy E. Davis, E.I.T. Mining Specialist, Land Quality Division Division of Land Resources Department of Environment, Health, and Natural Resources P.O. Box 27687 Raleigh, North Carolina 27611-7687 Dear Mr. Davis: 14AR 2 Q '92 DIV. LAID RES. I am writing to comment against renewal of Mining Permit 92-03, Crabtree Quarry, Wake County. I have lived near the quarry for 15 years and have found it to be an undesirable neighbor for many reasons. First, their blasting is a constant nuisance and often a cause for concern. It shakes my house with the force of a small earthquake, rattling windows and jarring pictures askew. When we moved into the house we did not know that we were near a quarry, so the first time we felt a blast, my two young children fell to the floor and covered their heads as they had been taught to do in earthquake drills at their pre-school in California. It is difficult to believe that blasts of this magnitude are allowed in a populated area. Various neighbors have told me of broken windows, cracked foundations, and repeatedly broken seals in their basements. Recent blasts have felt much stronger than those of a few years ago. Besides the vibration and noise caused by the blasting, we have the safety problem of being pelted by gravel from uncovered trucks hauling from the quarry. Duraleigh Road has loose gravel on it, especially in the vicinity of Crabtree Creek bridge, and the trucks themselves make driving treacherous. Lately, the company has had trucks and heavy equipment operating on the South side of Crabtree Creek, causing additional traffic hazards: The quarry has shown no regard for Crabtree Creek, as well. They have narrowed the creek bed and created a ford across it. They also let gravel and other stone spill into the creek causing problems with siltation and the buildup of islands far downstream. They have even "spilled" a large quantity of used motor oil into the stream, causing a "slick" that extended far beyond Crabtree Mall. Each time they are found to be in violation of environmental regulations regarding the Creek, they get off with a warning. Mr. E.I.T. • -2- • March B, 1992 It seems that no one is willing to penalize them for their continued disregard for the law. As long as I have lived here, I have been told by State regulators that the neighbors just have to put up with the quarry because it has a limited Iifespan and its permit will expire in 1992. It is now 1992 and I've learned that not only may the permit be renewed, but the State would also consider allowing the company to jump Crabtree Creek and open a new mine on the South side. Enough is enough. We are now in the city limits of our state's capital, and it is time to put an end to this non -conforming use. The land surrounding this quarry is all residential and it's time that the residents get some peace! I understand that Wake County wants the current pit enlarged to accommodate flood control impoundment, which seems like a reasonable use for the old mine. However, this should not require that the mining permit be extended for 10 years or that it allow reining South of the creek. I urge you to extend only a limited permit and to stop the mining when the pit reaches the capacity needed for flood control. Yours truly, Jill Bumgarner Heaton cc: Charles H. Gardner Director • Jill Bumgarner Heaton 4700 Connell Drive Raleigh, North Carolina 27612 0/1 0� March 18, 1992folp SF�, Mr. Tracy E. Davis, E.I.T. Mining Specialist, Land Quality Division Division of Land Resources Department of Environment, Health, and Natural Resources P.O. Box 27687 Raleigh, North Carolina 27611-7687 Dear Mr. Davis: I am writing to comment against renewal of Mining Permit 92-03, Crabtree Quarry, Wake County. I have lived near the quarry for 15 years and have found it to be an undesirable neighbor for many reasons. First, their blasting is a constant nuisance and often a cause for concern. It shakes my house with the force of a small earthquake, rattling windows and jarring pictures askew. When we moved into the house we did not know that we were near a quarry, so the first time we felt a blast, my two young children fell to the floor and covered their heads as they had been taught to do in earthquake drills at their pre-school in California. It is difficult to believe that blasts of this magnitude are allowed in a populated area. Various neighbors have told me of broken windows, cracked foundations, and repeatedly broken seals in their basements. Recent blasts have felt much stronger than those of a few years ago. Besides the vibration and noise caused by the blasting, we have the safety problem of being pelted by gravel from uncovered trucks hauling from the mi imrrw. ni irolninh Rose' hint L^.^Se nrairal nn it esecially in thP_ vicinity of Crabtree Creek bridge, and the trucks themselves make driving treacherous. Lately, the company has had trucks and heavy equipment operating on the South side of Crabtree Creek, causing additional traffic hazards. The quarry has shown no regard for Crabtree Creek, as well. They have narrowed the creek bed and created a ford across it. They also let gravel and other stone spill into the creek causing problems with siltation and the buildup of islands far downstream. They have even "spilled" a large quantity of used motor oil into the stream, causing a "slick" that extended far beyond Crabtree Mall. Each time they are found to be in violation of environmental regulations regarding the Creek, they qet off with a warning. 11 Mr. E.I.T. -2- March 18, 1992 It seems that no one is willing to penalize them for their continued disregard for the law. As long as I have lived here, I have been told by State regulators that the neighbors just have to put up with the quarry because it has a limited lifespan and its permit will expire in 1992. It is now 1992 and I've learned that not only may the permit be renewed, but the State would also consider allowing the company to jump Crabtree Creek and open a new mine on the South side. Enough is enough. We are now in the city limits of our state's capital, and it is time to put an end to this non -conforming use. The land surrounding this quarry is all residential and it's time that the residents get some peace! I understand that Wake County wants the current pit enlarged to accommodate flood control impoundment, which seems like a reasonable use for the old mine. However, this should not require that the mining permit be extended for 10 years or that it allow mining South of the creek. I urge you to extend only a limited permit and to stop the mining when the pit reaches the capacity needed for flood control. Yours truly, Jill Bumgarner Heaton cc: Charles H. Gardner Director VICTOR B. SYDNOR 4301 AZALEA DRIVE RALEIGH, NORTH CAROLINA 27612 YYYMMM .�V Ir91 � �� MAR 2 0 1992 LAND QUA 6 ' u�CTIU� March 18, 19 Mr. Tracy E. Davis, E.T.T. Mining Specialist, Land Quality Division Division of Land Resources Dept. of Environment, Health, and Rbeources P. 0. Box 27687 Ua7ny .v 1� A7n rfh (:arnlaTA 27Fil l—%Fi fi% Dear Mr. Davis This letter is in reference to the Crabtree Quarry of Nello L. Teer Company and the company's request to extend its mining permit, #92-03, Wake County. We strongly oppose the continuation or extension of this ran rm4+ 'i�hc ni+tr n4' 1:)nIni"h hac evf+=-iAAri i+a hr111nr4Ariac t...i...i.+. i...... ..i..J ...i .....+......icy.. .................�........ �..... �,......��.........�`... adjacent to the existing quarry. There has been considerable housing development in this area over a period of time, making the quarry no longer appropriate for this area. Our own home, which we purchased in 1968, has suffered from the daily blasting and resulting vibrations fromthe existing quarry. We would never have bought a home in this area had we known this would be the case. If the quarry is expanded, damage to the adjacent neigj-3borhoods will be inevitable. A new quarry on the south side of Crabtree Creek would be intolerable to the neighborhoods surrounding it. Since most of these areas are now in the City of Raleigh, we would reasonably expect that this type of land -use would be prohibited. It is in the best interests of the City of Raleigh and its residents to deny the renewal of this mining permit. Thank you for your attention to this matter. Sincerely, � V 11. Victor B. and Barbara Sydnor hA.. r, l... '! r 7 G _i ... T_ c i t. i. . 1'LL . Cha1 A. Fi. Llal La<JJGi , LJ.L J. CV r,.Vl- Division of Land Resources 0 • RECEIVED � ED VICTOR B. SYDNOR 4301 AZALEA DRIVE MAR 2 0 '92 RALEIGH, NORTH CAROLINA 27612 7 DIV. LAND tF, . March 18, 1992 Mr. Tracy E. Davis, E.I.T. Mining Specialist, Land Quality Division Division of Land Resources Dept. of Environment, Health, and ft®aurces P. O. Box 27687 na1G.i. Yv ll, 1\{Ji tli Carolina 27Vii-7Vur Dear Mr. Davis: This letter is in reference to the Crabtree Quarry of 1�ello L. Teer Company and the company's request to extend its mining permit, #92--03, Wake County. We strongly oppose the continuation or extension of this permit. The city of Raleigh has extended its boundaries adjacent to the existing quarry. There has been considerable housing development in this area over a period of time, making the quarry no longer appropriate for this area. Our own home, which we purchased in 1968, has suffered from the daily blasting and resulting vibrations fromthe existing quarry. We would never have bought a home in this area had we known this would be the case. If the quarry is expanded, damage to the adjacent neig#aborhoods will be inevitable. A new quarry on the south side of Crabtree r— _ 7_ i. s_ C cGn would' be intolerable to rG the neigi1uorhoods surz ounding it Since most of these areas are now in the City of Raleigh, we would reasonably expect that this type of land -use would be prohibited. It is in the best interests of the City of Raleigh and its r�e�lUCiity to (jelly the renewal of this mining permit. Thank you for your attention to this matter. Sincerely, Victor B. and Barbara Sydnor v/cc: Mr. Charle H. Gardner, Director Division t;' Land Resources RECEIVE � D MAR 2 .i -199.7 �AAID QIJAUTY SECTi01y q 1�1 n r d�7�Jti iu (lr/wv[1L a-` l , 1,1117)d h� n i i0 / I fY (1 n n J �U��GU /9 i'7L b eolt, `ram, 9-� MAR 2 0 '92 S 7 a 7 6 7 F '7 kQeovz", / 8 91Y.r/LMD RES. a� CUB,-� `�Cl-may r:�_� u-a��eC. �- `�Ge.e �a oC • �� e�s, . � � �-� CcrL� z r ckaA- Cs W. G 1Dl/e r c-PA-4 l A50-v� E�.����x�c.�/ .ice • /a' N.C. Department of Environment, Health, and Natural Resources Division of Land Resources, Land Quality Section Telephone Log Date: J Sheet of Timc: �i ❑ am L-ir pm 1. Project: Call: Placed ❑ Reccived r Retumed ❑ County: WA05 2. Conversation with: 1 ' Telephone: ( ) 3. Affiliation: Orla � pp 4. Content of conver.QGon: 4A4 [1JG�l�.IMO '( O. Iw AP71aww- W'K p �J< cc: _ Filed by: State of North Carolina Department of Environment, Health, and Natural Resources Division of Land Resources James G. Martin, Governor Chcuies H. Gardner William W. Cobey, Jr., Secretary March 20,' 1992 Director Mr. Steven Edgerton Nello L. Teer Company P.L. DVl{ 11 J1 Durham, North Carolina 27702 Re: Renewal and Expansion Request Crabtree Quarry Mining Permit No. 92-03 Wake County Dear Mr. Edgerton: The initial review has been completed on your request for renewal of Mining Permit No. 92-03 and for the expansion of mining operations to the south side of Crabtree Creek at the Crabtree Quarry in Wake County. The following additional information is needed to complete our review: 1.) All buffer zones to be maintained between any land disturbing activity and any adjoining property line or waterway on both the north and south sides of Crabtree Creek must be clearly indicated on all mining maps. Please specify if these buffer zones are to remain totally undisturbed or if they will be partially disturbed for the installation of necessary erosion and sedimentation control measures. A 2.) Construction details are needed on the details sheet for the "oversize rock" and "concrete" barriers to be utilized continuously as temporary highwall barriers during active quarrying activities. 3.) The rip -rap lined channel detail must be revised to clearly indicate that all such channels will be properly undercut to allow for proper placement of rip -rap and filter material to ensure their designed capacities are maintained. It would be beneficial to have a channel chart on the detail sheet to clearly outline the undercut dimensions and the final, design dimensions of these type channels. 4.) No detailed information has been provided regarding the design .and construction of the bridge proposed across Crabtree Creek. If your company wishes to have this P.O. Box 27687 • Raleigh, N.C. 27611-7687. C Telephone (919) 733-3833 An Equal Opportunity Affirmative Action Employer • e Mr. Edgerton March 20, 1992 Page 2 structure covered under our review of this request, please provide the above information. Should your company wish to defer evaluation of this structure to a later date, please clarify that this is your company's intention, that a formal modification request will be submitted to this office, and that no land disturbing activities related to the bridge construction will be initiated until said activities have been approved by this office. 5.) An outlet dissipator has not been provided for the outlet end of the culvert under the temporary construction entrance. Please provide its location on the mine plans and submit the supporting calculations and details for said dissipator. 6.) Items C.6.b. and D.3. of the application form indicate that a 20 foot wide safety bench will be provided between the top of rock and toe of the overburden slope. However, Sheet EC-3 indicates that a 25 foot wide bench will be provided. Please clarify this discrepancy appropriately on the plans and in the application. 7.) What are the proposed final elevations of the visual barrier berm proposed along Duraleigh Road on the south side of the creek? Will it be of sufficient height to adequately screen the operation from Duraleigh Road and neighboring dwellings? Will trees be planted along the outside slopes and along the top of said berm? Please provide appropriate information to clearly address this issue. 8.) More detailed information is needed regarding your company's blasting practices and procedures currently employed on the north side of Crabtree Creek and those that will be employed on the south side of the Creek. Will current blasting procedures need to be revised for the south side pit area to ensure that blasting will be within safe limits so as not to damage the nearby sewer outfall structure and neighboring offsite structures? Where and at what distance is the nearest offsite occupied structure to the north side pit Ar& the proposed south side pit? As this office has received several blasting complaints over the past several years, a detailed, technical report prepared by a third -party blasting consultant is needed to properly address this issue. • 0 Mr. Edgerton March 20, 1992 Page 3 9.) As several housing developments are in the immediate vicinity of this mining operation, this office feels that several aroundwater observation wells are npp lecl at the site, most specifically around the proposed southern pit to detect any potential groundwater impacts that may occur due to pit dewatering activities. Please provide the locations of any existing and proposed monitoring wells on the mine plans and how your company intends to monitor them. 10.) The recommendations outlined in the attached February 26, 1992 memorandum from the N.C. Wildlife Resources Commission must be incorporated into the mining plans for this project. PLEASE BE ADVISED THAT THIS OFFICE'SREVIEH CAMOT_ BE I COPLETED UM T IL ALL OF THE ITEMS LISTED _ABOVE HAVE -BEEN FULLY ADDRESSED_ In order to complete the processing of your request, please fnrwnrrl turn f 91 rrnni PC of -FhP i nfnrmat-i nn th my afifiAni-i nn at the following address: Land Quality Section P. 0. Box 27687 Raleigh, N. C. 27611 Please advise at (919) 733--4574 if you should have any questions on the above. Sincerely, Tfacy jF/. Davis, E.I.T. MiningU Specialist Land Quality Section TED/td Attachments cc: Mr. John Holley, P.E. CAVED FEB 2 6 1992 L North Caroling Wildlife Resources CoLAND i sion SECTION 512 N. Salisbury Street, Raleigh, North Carolina 27604-1188, 919-733-3391 Charles R. Fullwoocl, Executive Director MEMORANDUM TO: Beth Chesson, Assistant Mining Specialist Land Quality Section FROM: Dennis L. Stewart,. Manager cl � Habitat Conservation Program TVAMV: ]:ohriiary 261992 SUBJECT: Mining Permit Renewal/Expansion, Nello Teer, Crabtree Quarry, Mining Permit No. 92-03, Wake County The Wildlife Resources Commission has completed a review of the subject permit renewal. Biologists on our staff are familiar with the habitat values of the project area. We are submitting this correspondence in response to your request of January 23, 1992, for comments regarding impacts to fish and wildlife resources in the area. Our comments are provided in accordance with certain provisions of the Mining Act of 1971, G.S. 74-46 through 74-68 15 NCAC 5. The Wildlife Resources Commission has no objections to the pit expansion and the renewal of this mining permit as delineated by the maps provided. We would like to recommend the utilization of plant species beneficial to wildlife for revegetation such as switchgrass, orchard grass, Kobe lespedeza, bahia grass, lovegrass, and shrub lespedeza. The local wildlife biologist will be glad to assist Nello Teer Co. with revision of the revegetation plan. Also, should it become necessary to construct the described bridge across Crabtree Creek, a complete plan for the project should be submitted for agency review so that impacts to wildlife and fisheries can be properly addressed. Thank you for the opportunity to review and comment on this project. DLS/SAP /lp cc: Mike Scruggs, District 3 Wildlife Biologist Stephen Pozzanghera, Piedmont Kenneth Kennedy, Crabtree Quarry Mine Manager 7-1,�,�,Q�,, L i J VUIV�v 1 r lz 1. E -Z -�� SPEED QT1jzzER® FROM � f `, /�Jj TO DATE SUBJECT —r Dfa N .v -IaD Z SIGNED_ WILwnJOnes - Crbw - MADE W U.S.A. 4F9M T1pk t. - O Wdm-.—. 1989 REPLY �-- Tyr E� XA-VIC s of- 7�— AIC �,).,1 Sal ►�. Icy C o l-✓o5szz- 7a I M Cv�M�.rvTs Ar v SIGHED F RECIPIENT: RETAIN WHITE COPY, RETURN PINK COPY. EASE TURNOVER FOR USE WITH INDOW ENVELOPE. 0 TO RETURN IN A WINDOW ENVELOPE, PLEASE FILL IN NAME AND ADDRESS HERE AND r; FOLD AS SHOWN WITH THIS SIDE FACING WINDOW. -� 16 v rqn n ti _ J Division of Environmental Management Raleigh Regional Office Feb. 3,1992 MEMORANDUM RECEIVED TO: John Holly, Land Quali y Supervisor 1=E1 6 THROUGH: Arthur Mouber y �Vglonal Supervisor / 1992 Ken Schuster Air Quality Supervisor �bQUAL/rYS ,reorio►v FROM: Mark Feltner, AQS Env. Tech V SUBJECT: NC Mining Permit Applications (renewals) The following addresses the pending subject matter: Crabtree Quarry: _ Nello L. Teer currently operates the quarry and stone crushing facility under Air Permit No 4149R6 and in effect from January 1, 1992 to December 31, 1996. Plant was observed operating in com liance with applicable Air Quality Requlations and Standards on August 29, 1991. Cook Mine, Stone Road Pit, & McGraw Pit: Although --Air Permits for clay and sand mining itself does not require permitting, unless facilities utilize devices or equipment similar to the stone crushing quarry's i.e., crushers, grinders, dryers, screens etc. The Cherokee Sanford Grou2 does operate three brick plants Gulf and Moncure (both in Chatham County); and the Colon plant (Lee County) which are supplied raw materials from the Cook Mine and Stone Road Pit. All three plants are permitted and were observed utilizing the triassic clays (from the aforementioned mines) while operating in compliance at the time of last inspection. The McGraw pit supplies raw material (sand) to S. T. Wooten's numerous permitted asphalt plants. The pending renewal applications do not appear to have significant Air Quality concerns other than fugitive dust emissions from hauling and handling which is stated as employing wet suppression, and does not warrant further review by the Air Quality Section. 414 ' I w_Ae � 1 /..Q1u All 0' •mot, .F - .. �1 - .. - ' V - _ -� - 14 Of 71 TV n.YH• '', J ;�•n�y��...i. ' V � � ._ ' . . � . '�r � icy, .. '. J .. .. •. .. ...+.. _ .. - • s . ♦. . - • : _ =S r '.z �j y; �. : •. :.x. ' "^ v .•. , . ems: -- •:r - r - J+°x t '...r}•'••c�;..�' 4�4. n �XT- .11. r. . �. '. - _, •'-•r r 7 - .ti:.:• -• _ • _ ^• ' - _ .p1dllM. •�y.,�t;; aC✓-� i �•�4 i�- ,r., %1�4'/ _s4-"h•S .may,'• Y( 4�S'"i•. •. Y.SF _ S! ...1�'.t - _ •'1.- ilt[�.�•tl.. �. . .. .. •.S!'!"- �7'�+'S iM.ww}f-'•yc �n•yyi�`{q�:'-kitlaLf,.aMYIJ •: `1nr -'yro. -si.e• .lam•- t?�-a�.Lr. rie. .•ti-;. _ .1.- . �[.i..::. .. .. •�5`,A�� Ylsy�' 'i .'.•f .a•• -r, .:_..�•{1- "emu yaL.:./' S��, .«. ,��F .s ..�, - - .. .•mot - ' <-.ks?i'r...y' �• w:K ^ - �` b�: - r - a: _ 4k ;'y.i -. .r �- .._La..yp�.�' +'+jai{':+ar a'r '".js, +i.Yi.�n'�ii'�•1ft „F `4 Y'`A.l-s!ur+ir.'33�n'_ -*YYi . .y:.y . _ ..'•.4 -11•- i•y• - • � R ECEIVE D MINE SITE REVIEW FORM . FEB 2 6 1992 %tVp QUALITY er„_- - i' PROJECT NAME: 1.r4 + -e �uQrrj (A)l Co Due: z Assigned To: w/ ��' S Completed � tZ,Lq Z Approved by Arthur Moiiherry Timothy Donnelly REVIEW ISSUES: Watershed/Stream Name and Classification(- " 6V4 Comments PERMITS: NPDES Permit Required. Yes No NPDES Permit Existing/Proposed No. A � 0 !�� 3 5 5?o Non Discharge Permit Required Yes No Non Discharge Permit Existing/Proposed No. ax Comments ENVIRONMENTAL ISSUES: Wetlands Disturbed by Activity Yes No 401 Oert i f i cat i nn Rpm-i i rpd Yes No Comments n �ECVED E8 2 6 1992 LAND QUALITYTYTION ® North Carolina Wildlife Resources Commission 512 N. Salisbury Street, Raleigh, North Carolina 27604-1188, 919-733-3391 Charles R. Fullwood, Executive Director 0;GCOORAZiR41151 TO: Beth Chesson, Assistant Mining Specialist Land Quality Section FROM: Dennis L. Stewart, Manager ja'4.�- cl� Habitat Conservation Program DATE: February 26, 1992 SUBJECT: Mining Permit Renewal/Expansion, Nello Teer, Crabtree Quarry, Mining Permit No. 92-03, Wake County 111G TT 11.\.l .L LLTO G LAG .7VU1 LG.7 %. WltULk L�� LVil IL .7 %olli�.liG L.Gu a re V lGw Vi the subject permit renewal. Biologists on our staff are familiar with the habitat values of the project area. We are submitting this correspondence in response to your request of January 23, 1992, for comments regarding impacts to fish and wildlife resources in the area. Our comments are provided in accordance with certain provisions of the Mining Act of 1971, G.S. 74-46 through 74-68 15 NCAC 5. 111G T111U11LG i\G s o u r l+Ga7 AlU r7 l�V VN�G1..�41Vllj 4V 411th G pit expansion and the renewal of this mining permit as delineated by the maps provided. We would like to recommend the utilization of plant species beneficial to wildlife for revegetation such as switchgrass, orchard grass, Kobe lespedeza, bahia grass, lovegrass, and shrub lespedeza. The local wildlife biologist will be glad to assist Nello Teer Co. with revision of the revegetation plan. Also, should it become necessary to construct the described bridge across Crabtree Creek, a complete plan for the project should be submitted for agency review so that impacts to wildlife and fisheries can be properly addressed. Thank you for the opportunity to review and comment on this project. DLS/SAP/lp cc: Mike Scruggs, District 3 Wildlife Biologist Stephen Pozzanghera, Piedmont Kenneth Kennedy, Crabtree Quarry Mine Manager State of North Carolina Department of Environment. Health, and Natural Resources DMsion of Land Resources James G. Martin, Govemor Charles H. Gardr}er William W. Cobey, Jr., Secretary January 23, 1992 Director Memorandum To: Fred Harris' Director, Division of Boating and Inland Fisheries Wildlife Resources Commission Attention: Habitat Conservation Program From: Tracy E. Davis"'TV Mining Specialist Land Quality Section Re: Renewal/Expansion Request Nello L. Teer Company Crabtree Quarry Mining Permit No. 92-03 W?ke rn„nty Please find attached for. your review a copy of the above referenced request to renew Mining Permit No. 92-03 and allow expansion of mining activities on the south side of Crabtree Creek. Please review this information and advise as to the probability of this operation having unduly adverse effect on wildlife and freshwater fisheries (G. S. 74-51 (2)). Please respond by February 21, 1991 so that we may complete our review of this request within our statutory time limits.' As is the case in our review of all mining permit applications, renewals and modifications, this office will carefully review all proposed erosion and sediment control measures to ensure that they are sufficient to restrain erosion and.off-site sedimentation. However, any comments your agency can provide regarding effects on wildlife and freshwater fisheries would be greatly appreciated. If your staff wishes to perform a site inspection, it is recommended that they contact Mr. Steven S.'Edgerton at (919) 682-6191 to set up a convenient date and time. Your continued cooperation in the review of these type requests is greatly appreciated., Please return all of the attached documents with your office Is review comments as this is our, only copy of this information. In addition, please send a carbon_ copy of•yourreview comments to the applicant for his information. ted\ attachments cc: Mr. John Holley �7wQ7. u iy i, N.C.77,4ff_7f f27 ."T`l�.J.p,ye 1-1 7i;_3R 3X .v. w.. y, ,• , r r An Equal Opportunity Affirmadve Action Employer �M NELLO TEER � NELLO L. TEER COMPANY, P.O. BOX 1131, DURHAM, NC 27702 USA TEL: 919 682-6191 FAX: 919 688-4898 January 16, 1992 �jN�', ��Iit _�jE D Mr. Tracy Davis NC Dept. of Environment, Health and Natural Resources LAND QUALITY SEC lot, Land Quality Section 512 N. Salisbury Street Raleigh, NC 28711 Re. Mining Permit Renewal and Update - Crabtree Quarry Wake Co., NC Dear Mr. Davis: Z It is with pleasure that Nello Teer Company submits this renewal and update application for the above referenced site for your review and approval. Please find enclosed the fo 7 t pertinent to +-)tic rnneijal and linfiat/a lVi.lVwlllg illiViJIl SA J+1 VaJ �c�..r y1aJ ... JJ a. ... j.. ... ... .. .. process: 1) Mining permit renewal application. 2) Mine plans. 3) Supplemental information concerning stormwater runoff calculations, erosion control structures and channel design. Due to the continued growth of the Raleigh/Wake Co. market, Nello Teer Company will be continuing its mining operations on the north and south sides of Crabtree Creek during the next 10 year permit cycle. A check for $1,000 has been included with this submittal which will cover the $500 renewal fee and a $500 fee for alterations to site erosion and sediment control structures. After evaluating our mining operations on the south side of Crabtree Creek, it has become evident that certain erosion control structures will have to be altered as we proceed with mining. The design calculations and plans showing these alterations have been prepared by McKim & Creed Consultants and are included with this permit renewal application. Mr. Tracy Davis Page 2 Should you or any of your staff have any questions or require any further information, please do not hesitate to call me at 1-800-999-6356. Sincerely, NELLO L. TEER COMPANY Steven S. Edgerton, P.G. SSE/dg Enclosures CC: File NELLO L. TEER Co. Z U b J y U b ... OYA I W I GROSS 70740 1/16/92 1000.00 .00 1000.00 Mining Permit Renewal Application fee for Crabtree Quarry Mining P'rmit No. 92-3 JLV-EC .g V -7.1a1': JA `I ' L � LAND QUALITY SECT 10-h 1000.00 .00 1000000 DETACH STUB BEFORE CASHING Neri wueen r ::'.INVOICE NUMBER; xi PU3iCH%ISE OAD�R ;;INVOICE OATEM1! '''x s=cfi:QRQSB'ANEOUNt as `;s; a=018COltN� �.;: �nanr, L V v J J V V 1000.00 _ 1Mining Permit Renewal Application fee for Crabtree Quarry Nining Permit No. 92-3 D QUALITY S-FA..': . I 1ou,0.;r0 DETACH STUB BI'FOHE CASHING THIS CHECK IS IN PAYMENT OF INVOICES RENDERED 70 r— A Member o THE PRZER GROUP P.O. FiOX �131 17/92 ONE THOUSAND DOLLARS ANO 00 CENTS NC UEPT OF ENViR lNMENT TO HEALTH — DEPT. M114F-. THE PO 80X 27687 ORD OF ER RALEIGH9 NC Z7611 PAYAELE THROUGH MELLON RANK jUF{ f.. A. WILMINGTON, DE. 19999 ME:LLON1 RANK (F.,''TI fv.•'. PHILANLI.f� MA, PA .9 i02 .0ol 1000.00 2063906 62-4 j063906-� ;:*«rr1,000.00 EROSION AND SEDIMENT CONTROL CALCULATIONS FOR NELLO L. TEER COMPANY CRABTREE QUARRY PERMIT RENEWAL RALEIGH, NORTH CAROLINA COUNTY OF WAKE W r� u RECEIVED jAN 2 2 1-1912 CAi`D QUALITY SECT ICC' i: Mq Cv`RFF,n Ll L7 • �jrJ F=�i-���i �`r I r�—i = �� �_ •�..' � !r.�.T , �'_'ah-- `_�' 't i�rx- . �J'TG U Ti L-I Z l t'j t. T`I-# C Yl`�--1� f��K.. �c�h}��= ;►/VdS >��T� ___i--{f I�iFp l`--C�fZ T�-i� • - � . Y.. �u�. 2�TI�F�� �=v�r-rc._IL,a ,s : C� � G,Cra. 1r`I�2G - � .` _. �_.= .�=�5� ..f�-�-r� bl= i2��Gf�F IrJ. Gc��j4C� ���C I�-�I� • .,. � ,> .-�....GC�t=mil G1 F►��T . 2�PI�S�ti1�"1 �I[i. 'T�-�t� t`Li<L/�TZ c�f�SL;11� .__ �rT1�1+v�1.1 12/��I.lydt.l� lzdT.QfJ� .;2Jr`SC:T::I-. , . .. .�...._ • w . r.,. � r=—. +-, c.�� �-- r—vim f;� �, T U ,2 r✓ r .. u(.3 tr_� i i �u . �=C-t'l� /� L, J _ F TO T� Ti r`,ir-- G�Jti.�G t,1 Tr2bT ! ��4 1 ti} i./Itt i�� _ .. i�-�T 1 Md�-lrD �I M C . F[7r1- ..2� r.1q� -r�n I=t�o �} ��+✓ T I-} C- �` � �J"�T k2rc 1� �1 c�T � ��' � T i•� E k/ ©Tf� ��1-� �. D � .- ��ET �l.•OvJ A�1� GC».�G���T�T>r� '�L01n/ �Gl-l.dl.lh��l,� la�l /mac PI V-- . VJ ]. • • �� 4 BY i'- I, DATE SUBJECT _ a—Lo—L/_. ��EC.r�� SHEET NO._,i. OF CHKD. BY DATE - GiZ�� �-3 l��r� JOB NO. RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS -T DESIGN SHEET Z' jj zsljj� _3 2. c u ark c.1 � L - I c, ram] JnLiz_ i 1� F,::' G N4 I is or, s or Aec-Al ILI e7r7 �-T kj e7�F:: : 11 �vj(::�:, 0 Ul FJ ot-i a: { rz 4 OtAj I rj (f 57 ok� E .-:51 6t= r20(j 6, s-4 Q�--- t "3 y I A I • BY At:2L -DATE SUBJECT �J�L(.C) SHEET NC._�A__OF_ CHKD. BY DATE JOB NO. RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET -32? i � �uIS`i"I+�IC� ji�,�rf.f U1��1�i.lSlor�l 3r ,:q� � o�F✓ T� � �.i�Tl t..IGI : g�1 Itil 77 • • � 7 Ci 11 32 5t" - I G X 7O - 6� ,f7 4cD ',> -Ti�?J2 BY�DATE SUBJECT �L—� l-�� SHEET NO."I_—_OF_ CHKD. BY —DATE [,=—UL`l�'1 r'�LtJ`s� JOB NO" r- •--F RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS ___ DESIGN SHEET ., u fZtEt�dI � Lr d�c�� = 0,2�'-.<," = 1.`52 cis ��/Q1L/..��L._C DiSCNiS24E a� ��IST. 2rSElz � �Ap2�.. BYL7L DATE-- SUBJECT _{� {-�.p SHEET NO, 2 OF CHKD. BY DATE JOB NO. RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET rI • V01— � � =-:2�0.5�,G-I►.�� K (I �ri21,.►�(d3SCp� � Ac�� 7�23 C-F r W =.: -7Q I L- _-._..._40� Vo L. s 744 4- 112 'E 'Ayrj CD x .! i r . : I A, /n'E + A .^� r1r� r. : I n :s r-. /,i...- �� v i. L�l1�...x� 'f , .ems �t� +-•Urc.�� � U1-^ CX ! s I , - f G I `S I G c7'------------- F I . 99c�sy rr4 BY—,4aY DATE SUBJECT N��� Lam, ��I✓� SHEET NO. ?S .OF CHKD. BY DATE __� T? �_� G f ly JOB NO. - RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET w VLP+ U 1 • • LIME=1.FaIC�j s P • 4 • : f : f i ! 3 s L 7 3� ; Ji : WP= IG,46 r=:'r V 1,9`1 FPS t .. - _.... i ' I BY 42K DATE SUBJECT N L4ip �,� SHEET N0._4- OF CHKD. BY DATE `�_I_C�{i_._Q��L`�, 2�( JOB NO. RAGSDALE CONSULTANTS, P, A. CONSULTING ENGINEERS DESIGN SHEET C d ti_ t_ A - A Lr�l,lGt�r-N �= 12n � Fr 1�d1 rJ��.� .dry •-- U. � ; Ac C =0.4- AN -• 3�5 �� - � �. T� -- 2, s �--� s M � N 0.9 8 s --~-, - I cr-s I►u(El.fsl � S . Y v F � _- CI��X1s�=.22,5 SQy 24_II LteiZ �TOr.I: Sc��✓�az `ri I IGICrJs = 1,��2's��i • • T Fl-rN = 0,25 vQP= S, SL_e� = 4 A ; 0,25 F f W I iDY4_� b 2- O �2 _S[-..~ �NCaZ STIZG�6`- = T = (Cr-f2•4)(0 Z-s)(021 .12 p BY DATE SUBJECT dF1-r-12 t� /T �' SHEET NO. S _OF CHKD. BY DATE JOB NO. • RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS _ DESIGN SHEET BY Z�' 7=!" DATE SUBJECT --NFL , L 7'F SHEET ' NO. Co OF CHKD. BY DATE G2/ JOB NO. �i��� f I ra • RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET C�—r 1 r---c— --PJ n _ U._s__ �T r� Q- 2 : 2,S„ { S�11 14 .4M = o.�s' wP 2,1�-1 I Fr 'z jCQiCa,crlL.� BY DATE SUBJECT IJ F UIrL -TSHEET NO-7---OF _ CHKD. BY DATE JOB NO.____ RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET I '�Y_•i``-l'��%__ '�- V ��_11•,;7 � Jai- i_ r I --- 1 -, n A A �J -T 'At C7 • • 7 J • • nz_0 �o.4�C �C S 2� �• .G�� L 2 f VJ I rsi-N = o = o, c»� WP = 2.-7.7 r'r A = 0,77 �= wl Dz- I -I = C> Fr BY— � ---DATE- SUBJECT_L.._ i.l �L� _�.-- -- -- SHEET NO.., -- C'riKa. BY DATE _ r" '�? • _._ �-r_r _ J/ r ' J� - JOB NO..-- - - - -- .-'"-i. RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS 1 �_ _. T ^-��DESIGN SHEET - • �Zl-l-- 2 T�?� � r•.��i t� L��'` = O.�t `� Ate. lr - 2 J BY A1;,�, 1' DATE CHKD. BY DATE RAGSDALE +CONSULTANTS, P. A. SUBJECT -lFL_L :�C�J21 � OG- 10► 7 CONSULTING ENGINEERS SHEET NO. 1:51 OF JOB NO. DESIGN SHEET ,-1- _ , � I , w. i i . ....-^ lfl........i..- ,............ram..... I i 3 { P I c 1 �l A�-r1�Dfo�� u[ (rJ - o f 3 . 2,q4 cps BY A� DATE SUBJECT i �_7 � �� � SHEET NO. ICD OF CHKD. BY DATE r�GGi�• JOB NO. _;�r�'1 RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET • G.I- Z'-') J I' I r -E-1 r Q.I.-1- � �, - �#o - � � -ram = 2. � -'�� � t,,,ti , N .. • I . Li -12 i Y � f n , e 1- f � f , f r n r-r I %` fir 1 n h!V L C� N = �l F '2 - ! T. ._.......S 4 _ 3� Elm • E~ < = T a• �4 Gas 2 . 6v2 f�-P 5 BY V+c-L DATE SUBJECT may. l Q-Sr L�JZ_._ SHEET NO. { OF GHKD. BY DATE C _l _ 4 � JOB NO, RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET • 11 • • • • -D rJ �2s - -7 :5 "/P +z BY�12 DATE SUBJECT �F- I5 ��._,_ _ � _ _ SHEET NO. ;_Z OF CHKD. - BY DATE _� JOB NO. RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET r, 0 s • G�-1 A►� J F L_ !` - F-- SLR _ 2I-2,L1-I a2/-�,, IJACI C- /J,z = o. 27 A� 4- d� 1 - 2 :! t5 =7 a G�PT u _...- 0.21 W QPr m WI�T4-1..= 0-7 G Fs O o3�2 V 3.2 g3 F::�P!S �5Pe-4 = T Iza.a ) = I.6's < 2.E:) PPS BY DATE SUBJECT JEt-1-0 L SHEET NO. 4� _OF CHKD. BY DATE Z JOB NO. RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET 1 � Ll 1-I .= 'Z� 5.7 7 . s e - c .o O t 4- l4- c 3.ag r7r 1 ..: vJ►�. - 4 .�8 ter... V � 2,SZ -BPS .4 )Co. -7 4 BY 'Af2l - DATE SUBJECT �F-a�[� L T��� ,SHEET NO. OF CHKD. BY DATE GG�i1G:�� JOB NO. RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET vv 1 i�I H = r C� St=rz = I Ef r' LCO,f(TW = 7 S' P-aAr2i2,r-ai 2" (X D��4. _ 6a' \/Ot_ . -'z: 2 S1qq i GF . SJ2---AcE5 A.. 2�, = . s F CAI ►,!� � _./-�.�A = ,20.E � � ... _ mid i 4 _ C To i DT�-A r2an 0 4 . e , 3 r 4- 62e�oo BY f-� L- DATE SUBJECT -i-1aL'D (- TEE SHEET NO. 1`5 OF CHKD. BY DATE JOB NO. EEI�id_OIJ RAGSDALE. CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET r -1 L i l 3 f AMC-�Z(�t�]G,�J �i� U.v�i,L�4{ �1 M t✓r�s lDr�s . "- I 1 �, ..... 02 i r I I E , I 3 j3 _., L�1 i✓. _,L�,J. -ram v�l� �TIo i s 'i�4s� ►� . � l.ti%I � k�Sl D tJ , � �VViIJ i but � - t2, 5p BY_ko� _ ___.DATE SUBJECT Qlau,? L �EFj� _ SHEET NO. OF CHKD. BY T DATE Cjl����}i Lf JOB NO. RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET I21 �E i2 l% 1,2 IZ� zIZG--L- �=QL D4 rZ�F _' __�1.�55 . S �rl DIJS DIMEtaSI Or�S.. _ r -- L ...... .....1C�., FT T ' F i I 0215_ (0,4 �g.2�(I,G4 BY��ZY _DATE SUBJECT NELLo L SHEET NO._ 1_7 OF CHKD. BY DATE T1 (�7 ," -Z J08 NO, RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET S, sw = 3: I Y 1,7E) S� W I O T >- z-0 = O, ?,77 ✓� = o. 0225 �/ �• FPS 2 S BYrDATE SUBJECT �F{ L � SHEET NO._?' OF CHKD. BY DATEJOB NO. RAGSDALE CONSULTANT'S, P. A. =ONSULTING ENGINEERS DESIGN SHEET • • �I4 3nv 262 BY AF-!L� DATE SUBJECT ` � _ .� � _ SHEET NO._�'l OF CHKD. BY DATE G_rC�_tt JOB NO, RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET i • • w i r::77 4 - e_-::> r)=o.02ZS —�• cJrE r--S-2 P7-'IL.TE2 STO P W P - �5.7-1 PT A 0.g-'G35r` 2 = 0.22 Q= 2.4G CrL LrrJrF.1G ��`7 r W I1-� -. O. _.. .= 0.2d- rn o'07G3 Tz- T�-d�. L�fz[1i►� r �s 1.24 AG BY_Ajc .IL DATE SUBJECT _N �-� l� . �(�Iy _ SHEET N0. .'� OF CHKD. BY DATE _ C�-rl!� (- {�V �r�`'� JOB NO. RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET E Ll Ll rI • • V11LD`r'N =ram c: �• L > 4- �s F QG"rU 4 t_ 1 INt S I �R C -1- - 2 +sc) . N_ o._ vP - .r-- 8�� i-. .. �'.SLc? F .O•_ _0.5Z� :F i�FT 2 a Y T (G2I, 4?, ! �S"t' f M 6/5'T�� _ �1 M [` Tay SI n ►�� .<2,cl:; (ok) \N 3.43' F7 S.. SLoP� Yv= I A - o.44 �F tr, I r r�,_�_ 1 ra n S-� �ilE� Lir•Jrr��f TZt, ��-- BY_%•DATE SUBJECT SHEET NO._Z Of CHKO. BY DATE JOB NO. RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET • 21 P- I�:A P �7 _ _� �GTv�L Dr►�CrJ��co� (2 �-moo. - 4}-c] ;� • _..._ . _.. S S } 77 -7_GFS... .�...�_�.�_STD.,►�!t,!�`�.r.�.._.�D�M!*�S�ora .. .....t... , _. .. �... .. ., .._µ._ f es Q 0225 .45 P7PS 4-,0 r7ps 2 S-ro sip - �� _ 3.2" A (JIp" fG/a n%0,o�sZ BY____A2- DATE SUBJECT�{�-- CHKD. BY -DATE SHEET NO. G.Z_OF JOB NO RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET LA E • r< I • • • v.1IDT4 0.27 4.1-7 CAS 3,94 PFs �N F�rz T2c T � (&2,d X .4SX-0453D z 13-� < 2.'S (4 �- ) ` ` � T l -t go '2 O 177 c?p rT/p-r .. r L.., i { t� P 2.02 1=—r S-rC>[JE S, z C i .4 .j i 6Y_ _,'�4�Y__ DATE SUBJECT _IdE"tj-, 7 L . J�LSHEET NO. Z,> OF CHKD, BY DATE Ll JOB NO. F�1 r I-�r� •-r �f� RAGSDALE CONSULTANTS, P. A_ CONSULTING ENGINEERS _. DESIGN SHEET • VIPF-+- • S LOGS O -q J F-- �1 - G? • o�� 2 `•,� - �. !✓� � Pam. -)(a, I. 4 S 2. s cps 3I i f f.15, O.1 7 w-�r/�,-r Q- • t/?d.-_._..._._ `d_.,4z25_ , _ ..\� = ?d'Ifj .E=(� � Ci.. F-Pr L1 r.l C� __...... .,......�.,...._.....__.. f7, ram. • i �1-�'ro�1��.5+Z�`.��� 12��4.4 i2,8��.(.•f1-�r3/ .�33 �-4 � � s _ � ; .. . a E • _ice'- �O.O� �� �� �2 � `/b_ '-- O o410 W�=2.gOr-T = 0, S-7 S r= 2=0.2o =2,8aC� Lam, of F7ps 4 �0 ,17 - 7�iC- BY 6,I DATE SUBJE T N���-•!� L• _I �': �_ f� SHEET NO._! `4- OF CHKD. BY DATE _��JTrrl�Zl�.` f JOB NO. • RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET -> f,� --- 15 .-7 (, c-F~ s 0 Ll • i-S-Ft i-A&T F t� S�EPrN ' 4 ,42 VJ P = 3 . 6w, F-7- H O,Gf 5 F o- �I F� > 4F BY ADATE SUBJECT SHEET NO._2.� OF CHKD. BY DATE ^!��fs='I --� �+� � I �! JOB NO. SOS L RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET �l I t-11 �"1-T� � V � r f✓� C-'F-�`-.-.�1 la �� . F T a VJP /-I v.2s���s -..) 77 �.hs a . . • BY DATE SUBJECT _N,L2�_ ��� SHEET NO.26 OF CHKD. BY DATE JOB NO. _ • RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET 4i L� �4 2-76 - - _':�� s-r�-=ram, ` _TZE=� i r��►�,-�-�s � L,..=..� .. rc > f 1�L�S4+J C)4r'lEkIf- ,IOtj - C BY��'-` Z- DATE SUBJE/CT_,` �il�{7 r�� SHEET NO. r�7 OF CHKO. BY DATE �G LSD. ��� �.�': =�j JOB NO. RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET I ME�I}.'1E'fJsti4=:) J BY DATE SUBJECT ���� SHEET No.-M OF CHKD. BY DATE � _�%� / ' �{� JOB NO. RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET • 176--., i cDa.._ ���t•.� 1-ram: �L� M C� :,c_i ?._`� 11.1 Ac- I,9 Ac L1N 38-7 -�3S = 52 77 _ -7M,a it_,zs - -7 134rs]rJ .D.IM1�-lt'isI.=*j .. s WEi rz....L+`Y�-ru.._ -D`'� 2�. �t� ' �s� .ZC25 �. . =. O- <=:- t Co77 1=7/fir Z> : I S LQ PE = O. CAI �o`T FT/r_r Y� = O.0�e VJP = d1,3f3 t=r P, " 7J3 Co �c V PS BY —DATE SUBJECT _QE1_L_0 L �1=� .( - SHEET NO.—'Zq- OF CHKD. BY DATE G�-L�?C r^ �/ y'::`--! JOB NO. RAGSDALE CONSULTANTS, P. A. =0 NSULTING ENGINEERS DESIGN SHEET cA, = 3.12' 0--r 1.4 ? Z' SF BY /-ill- DATE SUBJECTSHEET NO.-30 OF CNKD. BY-/�;i DATE �� �f����i__,�� JOB NO. ✓0I(. zc f�lJ RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET Gc-I/w, I.'. i.J E-:!� e5 - I Qz� = 2. (a cis E-:STIM/�'�{:=L--) DrMCr11S1aIli - Oi L4 Fps, > :.2... ;Fibs . IN : r! L-.. MOT�2ti(�L i L-I ►V t � cr . . �.� t IZ�b r E e , E I _. SL6 fl i WP A - 1, 1.9 -SF e I BY i 'JZ DATE SUBJECT _,V F-LL�D IMF CHKD. BY DATE_ SHEET NO. Jl OF JOB NO. RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET �l Ac- t�Pru � 1.r SLR ✓� = O. 022.E o,19 l � gd 42 sF_ 2a. 1 Y SrCd>w Size, = +2 ���� (lef-- 8>'a .00-'�8� • ! C -7 � r BY_f-'Z DATE SUBJECT E: Lj.�a�-SHEET --OF CHKD. BY DATE JOB NO. RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET •- • S. s�--ter-� - , • I �S. -- r7. �8 ��. -7 3 �t_7_ BYDATE SUBJECT _�4EGI Q SHEET NO. 3(22 OF CHKD. BY DATE ��/_`!' ���y`-1�f?``� JOB NO. SUIL_f� S101 RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET • 40- • -rr iA a D 1 "� rJS f dEF-T- 1-4- - I. S, >L F-s . L lrj srI Cr. As 71, 04 FT , SF kAj 1 .G , FPS BY A� 4=- DATE SUBJECT �S_�a !� ��i�� SHEET NO. OF CHKD, BY DATA ��=f�r�f� �` C�s��:��� 1?_l>_"� JOB NO. RAGSDALE CONSULTANTS, P. A. CONSULTING ENGINEERS DESIGN SHEET 0 El m o O ' CIS CO a E 0 rn z Tc(min) — 200 100 L (it) 10000 S0 0 5000 m C m m CO C O o m o 10 . E 1000 E E x �\ II� 5 k 100 CA -A) Note: Use nomograph Tc for natural basins with well-defined channels, for overland flow on bare earth, and for mowed -grass roadside channels. dh For overland flow, grassed surfaces, multiply Tc by 2. For overland flow, concrete or asphalt surfaces, multiply Tc by 0.4. For concrete channels, multiply Tc by 0.2. Figure 8.03a lime of concentration of small drainage basins. 8.03.4 :M 13 r m a . m O co 0 a m E m O r 10- 0 rn H (ft) r.nn Tc(min) 200 100 �10000 Kn 5000 0 m 9 CO c m U Ca 0 U rn C p m . i0 . 1000_ CO \ 1 q 100 Note: Use nomograph Tc for natural basins with well-defined channels, for overland flow on bare earth, and for mowed -grass roadside channels. For overland flow, grassed surfaces, multiply Tc by 2. For overland flow, concrete or asphalt surfaces, multiply Tc by 0.4. For concrete channels, multiply Tc by 0.2. Figure 8.03a Time of concentration of small drainage basins. 8.03.4 7 :� H (ft) rnn L (ft) 10000 • m 50 5000 • O O m •- C13 — o n rn �.. 10 1000 m L o E x E 0 5 500 CD . L41 100 Note: Use nomograph Tc for natural basins with well-defined channels, for overland flow on bare earth, and for mowed -grass roadside channels. For overland flow, grassed surfaces, multiply Tc by 2. For overland flow, concrete or asphalt surfaces, multiply Tc by 0.4. For concrete channels, multiply Tc by 0.2. 'Figure 8.03a Time of concentration of small drainage basins. Tc(min) 200 100 50 U y 0 E Flo 8.03.4 rp �m O 20 ' f5 f0 B � 6 0 V, A m c+ c - 2 C 0.8 0.6 CO 0.4 0.2 of �� ■ ■■■ i ■ IN I w��r■affs:1f�111111111f■flff�flFffflFl�'��•.� \������ ICE �■n�� ■ �■nnnn 5 10 20 40 60 2 3 4 6 8 12 18 24 . Minutes Hours Duration Figure 13_03d Rainfall intensity durafinn eurvnt—Grppnshnro_ 15 10 6 o, .. C 2 N 0.8 ru 0.6 oa 0.2 0.1 • 1�■■■Ff�F1Sf1sf�����iF��l��Ff1�� NOO ■miEmm"mm UNION reF3■��aFIF�Ffs�Ff�FlrF:r� �F>}» \.r�FlFff��� ■ooa10 ■�rsw�r■�■�■✓11r■r✓r�■■r■�+r�a�l\\ �Il�n ■�® n' • IM .. inutes Hours Duration Figure 8.03c Rainfall intensity duration curves —Raleigh. 8.03.6 m 0 a� 0 CO c 0 0_ 2 0 m 0 0 E a z ro Ca Y 0 CD c m E D E x Note: Use nomograph Tc for natural basins with well-defined channels, for overland flow on bare earth, and for mowed -grass roadside channels. For overland flow, grassed surfaces, multiply Tc by 2. For overland flow, concrete or asphalt surfaces, multiply Tc by 0.4. For concrete channels, multiply Tc by 0.2. Figure 8.03a Time of concentration of small drainage basins. Tc(min) qnn 100 s0 10 5'L 1 8,03.4 • 11�'j IQ t3 inn 4 C y 2 0.8 0.0.4 .0.2 01 �t�M■Sr�����rtii �_���� ��..��r �■■I�■■ir tttttr■�r■rltl�atE�ttt�a■�■�iir■� Los \� ���w���rr����wrwrwr�'r•�`.'.� ��Irwr��w�� r.■r■rlr�r,r.l■i■ilrtr.�t.����.• •\��r■I■■Ir, r1�■!r■relrf>Slr>ri�tiiii� `�.���.�\�r�rf ■■111■■■■■�■■■�►�\, C �. 5 1n - 2n an G0 2 ; e 6 a t2 18 24 Minutes Hours Duration Figure 8.03d Rainfall intensity duration curves —Greensboro. l -' 20 10 4 G 2 -. Z 0.6 0.4 0.1 00111■.■■■.�■■■■■■m■■ "���Ait�� �� t� ��� ri■�■r� r S11r :���:� ``��rrn �ttt■rts��t�■ilt�■■■�rr�■�r ,� ■11■i■�: ■MNI Irt■s■����rti�t�.'�1��1\ `lti�ti r�1tIIIIIi■� rn■■s■t11t1t■1tt1�r_rrt��rrlti►�■�.��\, ■■Ili■■■■■.�■■■■►�1�\'� 5 1 10 20 40 60 2 3 4 6 8 12 IS 24 Minutes Flours Duration 40 Figure 8.03e Rainfall intensity duration curves —Raleigh. 8.03.6 0