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Tangerine Road Aggragate Plant Development & Specific Plan
TANGERINE ROAD AGGREGATE PLANT Development Capability Report and Specific Plan A Planned Development by GRAMME Co S mmpnny II 2E FINAL REPORT July 18, 1994 prepared by: Granite Construction Company P.O. Box 27557 Tucson, Arizona 85726 contact person: Ken Kubacki, Plants Engineer Phone: 602/748-8000 Fax: 602/748-1862 11 11 11 0 � DEVELOPMENT � CAPABILITY REPORT 1 n DEVELOPMENT CAPABILITY REPORT TABLE OF CONTENTS INTRODUCTION .............................................. 2 Exhibit DCR I ....................................... 3 EXISTING CONDITIONS ................................... ... 4 A. Topography and Slope Analysis ....... ...................... 4 B. Hydrology and Water Resources ............................. 5 1. Tributary Drainage .................................. 5 2. On-site Conditions .................................. 5 3. Water ........................................... 5 Exhibit DCR II ..................................... 6 Exhibit DCR III ..................................... 8 Exhibit DCR IV .................................... 10 C. Vegetation and Wildlife Habitat ............................. 11 1. Vegetation ....................................... 11 Exhibit DCR V .................................... 12 Exhibit DCR VI .................................... 13 2. Wildlife ......................................... 14 Exhibit DCR VII ................................... 15 D. Geology and Soils ...................................... 16 1. Geology ........................................ 16 2. Soils Analysis .................................... 16 3. Reclaimed Soils ................................... 16 E. Archaeological and Historical Features ........................ 16 Exhibit DCR VIII ................................... 17 Exhibit DCR IX .................................... 18 F. Structures, Roads, Other Developments ....................... 19 1. Structures ....................................... 19 2. Roads .......................................... 19 3. Other Developments ................................ 19 Exhibit ........................................ 20 G. Infrastructure and Public Service ............................ 21 1. Utilities ......................................... 21 2. Natural Gas Pipeline ................................ 21 H. Composite Characteristics ................................. 22 1. Topography ...................................... 22 2. Hydrology ....................................... 22 Exhibit XI ....................................... 23 0 DEVELOPMENT CAPABILITY REPORT PREFACE ' At the request of the Town of Marana, the format and content of this report will assume that the proposed Santa Cruz River bank protection is in place in order to ensure consistency of the report and facilitate review. The scope of this project is designed around the bank ' protection as a finished project. Therefore, the entire report will read as if the bank protection were in place, and excavation will not commence within the current floodway boundaries unless and until the bank protection project is completed. I� n 1. INTRODUCTION The Development Capability Report describes, in maps and text summary, the compatibility of the project to the natural and manmade features. The following elements are described and analyzed: A. Topography and Slope Analysis B. Hydrology and Water Resources C. Vegetation and Wildlife Habitat D. Geology and Soils E. Archaeological and Historical Features F. Structures, Roads, Other Developments G. Infrastructure and Public Service H. Composite Characteristics Significant features have been compiled into a composite map and text at the end of this report. The Tangerine property consists of 300 acres within Marana town limits. The property is located one mile west of Interstate 10 on the south side of Tangerine Road. The project location is shown in Exhibit DCR I, page 3. This plan covers the 160 acres east of the Pima County Regional Landfill. The remaining 140 acres to the west may be added at a latter date as an amendment to the specific plan. GRANITE CONSTRUCTION COMPANY DEVELOPMENT CAPABILITY REPORT 2 a 0 a m IL v CL 0 W I Il. EXISTING CONDITIONS A. Topography and Slope Analysis The Tangerine property is located on the north bank of the Santa Cruz River and has consistent terrain. The property slopes gently from the southeast to the northwest. There are no ridges, rock outcrops, or significant features on this site. The property has an overall average cross slope of 1.7 percent. CROSS SLOPE CALCULATIONS Average Cross Slope percent = L x 1 .0023 A L = Length of Contours = 22,076 feet I = Contour Interval = 10 feet A = Area of Site = 300 acres Average Cross Slope = 1.7 percent GRANITE CONSTRUCTION COMPANY DEVELOPMENT CAPABILITY REPORT 4 B. Hydrology and Water Resources 1. Tributary Drainage In a report prepared by Clint Glass of RUST Engineering (Exhibit DCR II, pages 6 and 7), it is determined that there is essentially no local drainage to the property. The report suggested that a small berm be placed around the excavation to prevent any local runoff. The requirements of this letter are shown in Exhibit DCR IV, page 10. 2. On-site Conditions There are no washes or streams coming onto or off of the property. With the bank protection in place, the site has been removed from the 100 -year floodplain. 3. Water Water will be provided to the property by wells located on site. Granite currently has two groundwater rights. The first is a grandfathered right for 440 irrigation acres a year (Right No. 58-108943-0003). The second is a mineral extraction water right for 1,200 acre feet a year (Permit No. 59-533480-0000). Water conservation will follow the requirements established under the Tucson Active Management Area governed by the Arizona Department of Water Resources. 4. Groundwater Recharge In a concept report from the Northwest Tucson Active Management Area Replenishment Program, dated February 23, 1994, the area of recharge is shown to be approximately one-half mile down stream of Granite's property. The location is shown in Exhibit III, pages 8 and 9. GRANITE CONSTRUCTION COMPANY DEVELOPMENT CAPABILITY REPORT 1 5 CMG DRAINAGE Exhibit DCR II oil" ENGINEERING, INC. CLINTON M. GLASS, P.E., PRESIDENT P.O. BOX 1425 TUCSON, ARIZONA 85702 (602) 882-4244 June 1, 1994 Ken Kubacki Granite Construction Company P.O. Box 27557 Tucson, AZ 85726 RE: Response to Pima County Comments on Local Drainage Plan for Marana Sand and Gravel Mining Property Dear Ken: In:response to Pima County's review commentsJ have proposed placement of a small berm around the east and south perimeters of the mining area. This =berm would be for. the purpose -of. keeping the. local drainage from entering the pit : and initiating the - headcutting process. A shallow drainageway is proposed along the toe of this berm to collect any local runoff which may accumulate along these property boundaries. As I indicated to you in my previous letter, it is my opinion that there is little to no local runoff draining onto this property for existing conditions. This is because the adjoining land rises are agricultural, and the slopes are so mild as to preclude the possibility of any significant runoff even during major storms. I am aware that Pima County indicated concerns regarding the possibility of future development on these properties and the effects of this on increased runoff rates. I am. sure that Pima County is aware that the Town of Marana requires onsite detention in order to prevent increases in runoff from these properties. Therefore, if this requirement is implemented for adjoining future developments, then there should be no increase in runoff rates which would affect your property. I am not of the opinion that onsite detention is required for the mining operation since the excavated pits will essentially serve as a detention area. Offsite runoff which is collected within the proposed shallow drainageways adjoining the DEVELOPMENT CAPABILITY REPORT 6 Exhibit DCR II (continued) Mr. Ken Kubacki page 2 June 1, 1994 perimeter berm will follow a course paralleling the natural grade. This then provides for discharge of runoff (should there ever be any) from these perimeter drainageways at the same point where natural discharge leaves your property for existing conditions. I hope this letter adequately addresses Pima County's review comments. If you have any questions or need additional information, please contact me at your convenience. Yours truly, Clinton M. Glass, P.E. cwm DEVELOPMENT CAPABILITY REPORT 7 Exhibit DCR III .NORTHWEST TUCSON ACTIVE. MANAGEMENT AREA. REPLENISHMENT PROGRAM CONCEPT REPORT -FINAL- FEBRUARY 23. 1994 W COOPERATION WfTH METROPOLITAN DOMESTIC WATER IMPROVEMENT DISTRICT BKW FARMS PIMA COUNTY TOWN OF MARANA and TOWN OF ORO VALLEY DEVELOPMENT CAPABILITY REPORT 8 C a 2 I i� Cr Z a x A 4 4 Exhibit DCR 111 (continued) it •: x• L f :s Ca W 66 us Co 1: ':�'� _ ': ; ;:fir.: , � `•,.� F ki DEVELOPMENT CAPABIUITy REPORT 9 r O U) 4 D V 0 0 4 va v cn . ( -CO)o z I' coo I �r Q m 0 I' n c 0 -00 . I ' -4 ..� D I ' czi � m I: 0 x m .I: 0 n n R z I: n CO) .0 z Z> X (A =-1 z I D C) I m o o i m0 O I (A rn m � • I �o m I: D� 0 : I D,o 0 , r c D, z 0 r I: :I I: :I I: I M ,. h �! I n :I z is • z �;on ; X rn D I z I � I - z Im a )0 �v r a C' oc;) ZD Z .Zi oom Z m cz Zo a z 0C)o 0 zmp Z Oo �, nrn Z O 00 - mwno aa z0 C) m a Z z r M m< m x a 0 0 M 1 C. Vegetation and Wildlife Habitat 1. Vegetation The Arizona Department of Agriculture conducted a native plant survey for Granite on March 8, 1994 (Exhibit DCR V, page 12). Due to the fact that the property had suffered damage from flooding in 1993, the vegetation consists mainly of shrubs and grasses. The survey did indicate the following vegetation quantities: DESCRIPTION QUANTITY Barrel Cactus 1 Cholla 16 Prickly Pear 7 Mesquite 220 Palo Verde 230 With these plants living in areas that will be mined, Granite has taken the proper steps to ensure that the plants will be salvaged. The property has been registered with the State Agriculture Department as a property ready for plant salvage (Exhibit DCR V, page 13). Before salvage will begin by Granite or a plant salvage firm, the Town of Marana Ordinance 92.04, Title 20, Protection of Native Plants, will be strictly followed. GRANITE CONSTRUCTION COMPANY DEVELOPMENT CAPABILITY REPORT 11 Exhibit DCR V KEIT.t KELLY KEN L. BOYD Dwoaa Associate Diad« Arizonae arf wni o riculf ura L I 1688 West Adams, Phoenix, Arizona 85007: (602) 542.4378 FAX (602) $42-0009 PLANT SERVICES DIVISION ARIZONA. N.A.TTVE PLANT SURVEY. RESPONSE KEN MMACKI, PLANTS ENGINEER SURVSX NmmER 773 GRANITE CONSTRUCTION COMPANY BOX 27557 DATE MARCH e, 1994 TUCSON, ARIZONA 85726 RBS TANGERINE ROAD PROPERTY Dear MR XUBACKI: The Department of Agriculture has completed a native plant survey of the above referenced project/application number, and the results are as follows: ( ) There are no protected native plants on the site. ( ) The plants on the site are of low quality and salvage is optional. ( ) The terrain is too rough to make salvage of the planta possible. (X) The plants or a portion of the plants are accessible and are of average or better quality, and we recommend plant salvage. VARXETY AND NUMBER OF PIAN: o -s ► it 3-6, H 6-10 • Q 10-15 , OVER CRB6T IiIACC F-71 X X X -- . X 11 X M X X 1JR3ALY I AGAVE I DARK CL X X X 11 1 C30LLA 16 IN ADDITION TO THS ABOVE PLANT COUNT 65 MESQ[JITli6 ANS 7 PAIR VERDE t4ER8 OBSERVED iRTHItlt 50' OF THE PROPERTY BOUNDARY, AN Am ARBA TEAT SHOULD NOT 8E DISTURBED. sincerely, WILLIAM T. IIE' "ALL DISTRICT INSPECTOR ect Program Manager ADA -PSD 0002 9193 . DEVELOPMENT CAPABILITY REPORT 12 ExnwiI DCR `%1 ARIZONA DEYARTIIENT OF AGRICULTURE NOTICE OF INTENT TO CLEAR LAND Pursuant to A.R.S. § 3-904 the undersigned, as Owner of the Property described herein, gives this Notice of Intent to Clear Land of protected native plants. 1. OWNER/LANDOWNER'S AGENT. The owner or landowner's agent of + the Property upon which protected native plants will be affected: Owner's Name .. . Granite ConstructionCompany.......... Phone.. 602-748-8000. 0. . Address...P. 0. Box 27557 ..... Tucson AZ 85726 ... ... ...... Street city State zip Agent's Name..Ken .Kubacki .................... ..... Phone. §02.-74$ 89QQ.. . Address.. S.. ...................................................... Street City state zip 2. PROPERTY. The description and location of the Property upon which protected native plants will be affected: me of Property/Project ... Tange• • rine Road Pro�ertx • • • • • • • • • • • • . . • • • • • • • s • . . . • . . • . . • . 10200 West Tangerine Road Marana, Arizona 85653 Address ...... •.................................................... Physical Location (attach map) .................................... (Note: Map must also show surrounding land for 1/2 mile in each direction). Attached Tax Parcel ID Nos. ............................................... Legal Description ( or attach copy) ....Attached..... .. • . . ... • . . . • . . • . . . . . • . . • . . . • • . . . . . . . . . . • . . . . . . . . . . • . . • . . . . . • . . . . . . • • . . • • • . Number of Acres to be Cleared ....40.0. F;w • ......................... . 3. OWNER'S INTENT. Landowner's intentions for the purpose of clearing private land of protected native plants. [] Owner intends to relocate and transplant the plants on the same property, or to another property he also owns. [9 Owner intends to allow salvage of the plants, and may be contacted. [] Owner has already arranged for salvage of the plants. H Owner does not intend to allow salvage of the plants. HOther: ................................................ 4. APPROXIMATE STARTING DATE. March 1; 1994 ee of a period listed on reverse side) March 1, 1994 Signature Ken c i Date NOTICE TO SALVAGERS: ADA-PSDO036 9/9� CONSENT OF THE LANDOWNER IS REQUIRED BEFORE ENTERING ANY LANDS DESCRIBED IN THIS NOTICE. DEVELOPMENT CAPABILITY REPORT 2. Wildlife The Arizona Game and Fish Department was contacted to do a site analysis of the project area. There records show that no special status species are presently known to occur in the vicinity of the project area. As the project progresses over time and the areas are reclaimed with overburden and other materials, the natural vegetation and wildlife will habitat these areas once again (Exhibit DCR VII, page 15). �I GRANITE CONSTRUCTION COMPANY DEVELOPMENT CAPABILITY REPORT 1 14 Exhibit DCR VII G� Fik !w, �rpar THE STATE < <: OF ARIZONA ca..�...o.: Lm Trnbe, Yana. CA.-saaa j Fhrahclh T. M uudm, l ucaun r r Anhui Puna.PMirnn GAME & FISH DEPARTMENT Michaelnnc M.GolnRhI5SFla n 2221 West Greenway Road, Phocniz, Arizona 850234399 (602) 942-3000 Director Duane L. Shnwfe 555 N. Greasewood Rd., Tucson, AZ 85745 (602) 628-5376 Delmi.Dirrcw. TMrma.11'. Sp�ldmg 24 February 1994 Mr. Ken Kubacki Plants Engineer Granite Construction Company P.O. Box 27557 Tucson, Arizona 85726 Re: Site Analysis for 300 -acre Site Proposed for Sand & Gravel Operation Adjacent to the Santa Cruz River; T12S, R11E, Sections 1 & 2. Dear Mr. Kubacki: The Department has reviewed the above -referenced project for its potential to impact wildlife resources, especially special status species and sensitive habitats. We offer the following comments in response to your request. Records in our Heritage Data Management System show that no special status species are presently known to occur in the vicinity of the proposed project. It is our primary concern that reclamation minimize excavated areas" exposure to excessive wind and water erosion. We, therefore, recommend that reclamation of excavation sites include the re-establishment of vegetative groundcover. We would encourage you to consider stockpiling topsoil for later application over those areas reclaimed with overburden. Topsoil serves as a natural seed repository for many vegetative species in the area. Given the poor success rate of artificially revegetating nutrient- and seed - poor overburden soils, application of topsoil may facilitate a more successful reclamation of excavated areas. Revegetation efforts may also be supplemented by hydroseeding with native plant species. Thank you for the opportunity to review and comment on the proposed project. If you have any questions or wish further discussion, please call me at 602/628-5376. Sina ely, Sherry Ruther ' Habitat pecialist Tucson Regional Office DEVELOPMENT CAPABILITY REPORT I D. Geology and Soils Overburden or topsoil, is material zero to five feet, the thickness varies, bellow the surface of original elevation. This material will be stored onsite, either in stockpiles or landscape berms. ' E. Archaeological and Historical Features The Arizona State Museum has been contacted for the information concerning the property. A records check was performed for the property, and the northwest quarter of Section One was indicated as the only area not yet studied (Exhibit DCR VIII, page 17). Granite has hired a consultant to study the area, and the work is now complete. The results of the study have indicated no areas of archaeological interest. The letter clearing the property is shown in Exhibit DCR IX, page 18. GRANITE CONSTRUCTION COMPANY L DEVELOPMENT CAPABILITY REPORT 16 1. eolo The Tangerine Road property is comprised of Recent Alluvium soils which lay above Fort Lowell Formation and upper Tinaja Beds. The upper alluvium soils in the area are ideal for sand/gravel mining. The deposits consist of interbedded layers of sand, gravel, silt, and clay. This information was received per Groundwater Monitoring Plan, Granite Construction Company, Tangerine Road Property, Errol L. Montgomery & Associates, Inc., 1992. A copy of this report has been provided to 1 the Town of Marana planning administrator. 2. Soils Analysis A Geotechnical Investigation was done by SHB ARGA, Inc. The results of their report are shown in the Appendix, Attachment E, of the Specific Plan. ' 3. Reclaimed Soils ' Certain areas specified in Granite's Specific Plan will be reclaimed over the life of the project. This will allow the areas to be used for industrial operations. These areas will be reclaimed with overburden and with inert materials as classified by the Arizona Department of Environmental Quality. When these areas are ready for development, a soils report will be done at that time. In the areas that will not contain inert fill material, overburden will be used, when available, to reclaim the area. This will ' allow for the return of native vegetation and wildlife. Overburden or topsoil, is material zero to five feet, the thickness varies, bellow the surface of original elevation. This material will be stored onsite, either in stockpiles or landscape berms. ' E. Archaeological and Historical Features The Arizona State Museum has been contacted for the information concerning the property. A records check was performed for the property, and the northwest quarter of Section One was indicated as the only area not yet studied (Exhibit DCR VIII, page 17). Granite has hired a consultant to study the area, and the work is now complete. The results of the study have indicated no areas of archaeological interest. The letter clearing the property is shown in Exhibit DCR IX, page 18. GRANITE CONSTRUCTION COMPANY L DEVELOPMENT CAPABILITY REPORT 16 LJ Exhibit DCR VIII THE UNIVERSITY of ARiZONA, TUcsoN ARIZONA Arizona Sate Museum January 21, 1994 Mr. Ken Kubacki GRANITE CONSTRUCTION COMPANY Post Office Box 27557 Tucson, AZ 85726-7557 Dear Mr. Kubacki: Thank you for your call of yesterday, requesting an archaeological site survey file check for property located at T12S R11E Sec 1 and 2. Tucson. Aruona 85721 (602)621-6281 FAX (602) 621-2976 The Archaeological Site Survey Files at the Arizona State Museum have been consulted with the following results. There have been two surveys in the SW quarter of Sec 1, that Criss-cross the area under study, however sites were not located during these surveys. There have been no surveys conducted in the NW quarter of Sec 1, nor have any sites been located. Sec 2 on the other hand has been completely surveyed to the 100% level of coverage. There are four sites plotted for the SE quarter, however the project at hand does not appear to pose any threat. Based on the information from the files, and the fact that Pima County Flood Control plans to stabilize the southern bank of the Santa Cruz within the study area, additional survey . the SW quarter of Sec 1 is not recommended at this time. If during the course of construction cultural remains are found, the Museum or the County archaeologist should be notified as soon as possible. The west half of the. NW quarter does require an archaeological survey be conducted prior to any ground modification activities. Clearance on this portion of the project would not be recommended until after archaeological investigations have been completed by a qualified (based on standards established by the State Historic Preservation Office) archaeologist. If you have any questions concerning this statement, please feel free to contact me at 621-4011. Sincerely, Sharon F. Urban (Miss) Public Archaeologist DEVELOPMENT CAPABILITY REPORT FimaCountyCommuW yCoBegeDistrid ' March 22, 1994 Mr. Ren xubacki ' Granite Construction, Sox 27577 Tucson, AZ 85726 0 n it 1 -1 i Tucson Branch RE: Report for Tangerine Parcel 5 test excavation PCCAC Job No. 9310 Dear Mr. Kubacki: Exhibit DCR IX WWF aWWWANWPfte Ti w t AFLOW d5nW OM TOWWW MM tB 4M ARCHAEOLOGY CEX= Enclosed please find the report for the Tangerine Parcel 5 ex- ploratory archaeological test excavation PCCAC Job No. 9310. Based on the field methods employed and the results of the Sub- surface test, there does not appear to be sufficient evidence to warrant further archaeological studies on the property. Although I do not recommend additional archaeological studies for this project, ground disturbing activities on the property should not commence without authorization by the agency archaeologist. The likelihood of buried materials being present is low. There remains the possibility that ground disturbing activities could reveal the presence of heretofore undiscovered archaeological resources. if such materials are discovered, construction activ- ities should stop. Consultation should be initiated With the cognizant agency archaeologist, and if applicable under ARS 41- 844 the Arizona State Museum, to assess the potential signifi- cance of any artifacts or features unearthed. Under State law (ARS 41-865), if human skeletal remains or funerary objects are discovered the Arizona State Museum should be contacted immedi- ately. Thank you for the opportunity to work with you on this project. If we can be of any further assistance, please do not hesitate to contact us. sincerely, David V. M. Stephen Director DEVELOPMENT CAPABILITY REPORT 10 ' The property to the south of the project is undeveloped and owned by the State of Arizona. To the east the property is owned by CalMat of Arizona and has been approved for sand and gravel mining. Cal Mat has already started a mining operation on the property. The property adjacent to CalMat is owned by Arizona Portland Cement, one of only two cement -producing facilities in the State of Arizona. The 1 consolidation of like industries is a classic zoning application in the localizing of industrial development within the community. The property surrounds the Tangerine Road Landfill on all sides except the north. The F � I properties to the north and west are farm land and undeveloped terrain, respectively. GRANITE CONSTRUCTION COMPANY DEVELOPMENT CAPABILITY REPORT 19 F. Developments Structures, Roads, Other ' 1. Structures No structures exist on the property. There are, however, power lines that cross the property. The easement is owned by Tucson Electric Power Company. TEP has been notified, and they have no objections to the project (Exhibit DCR X, page 20). 2. Roads The only access to the project site is from Tangerine Road. There are no improved roads on the site. Future access to the site will be from Tangerine Road. The Specific Plan will include substantial detail concerning this subject. ' 3. Other Developments ' The property to the south of the project is undeveloped and owned by the State of Arizona. To the east the property is owned by CalMat of Arizona and has been approved for sand and gravel mining. Cal Mat has already started a mining operation on the property. The property adjacent to CalMat is owned by Arizona Portland Cement, one of only two cement -producing facilities in the State of Arizona. The 1 consolidation of like industries is a classic zoning application in the localizing of industrial development within the community. The property surrounds the Tangerine Road Landfill on all sides except the north. The F � I properties to the north and west are farm land and undeveloped terrain, respectively. GRANITE CONSTRUCTION COMPANY DEVELOPMENT CAPABILITY REPORT 19 Tucson Qeciwe Powar Company 220 west sixth street, Post Office Box 711 Tucson, Arizona 85702 February 9, 1994 Mr. Ken Kubacki Granite Construction Company Tucson Branch P. O. Box 27557 Tucson, Arizona 85726 SUBJECT:. Proposed Sand & Gravel Pit Tangerine Road Sections 1 & 2, T12S, R11E Dear Mr. Kubacki: Exhibit DCR X Area Code 602 Telephone 622-6661 Tucson Electric Power Company has no objection to the proposed sand and gravel pit at the above location. Please note that there are existing overhead electric facilities within a portion of the subject property. The easements for these facilities are recorded in Miscellaneous Book 76 at page 594 and in Docket 9249 at page 610. Permission for the proposed construction is given with the following understanding: 1. Unlimited access to the easement must be provided in the event it is necessary for entry on to the easement for maintcrance and/or repair to the electric facilities. The property owner understands and agrees, repairs for any damage to the pole line, as a result of the proposed project, will be at the owner's expense. 2. No development is permitted within the easement area. Sincerely, Patricia Ann Smith Land & Facilities Advisor Land Management DEVELOPMENT CAPABILITY REPORT 20 G. Infrastructure and Public Service 1. Utilities With electrical and telephone lines crossing the property, delivery of service will be readily available. There are no sewer lines to the property. A septic tank system is appropriate for the site due to the minimal volume of facilities that will be required for the operation. The system will be used according to the codes and regulations required at the time of installation. 2. Natural Gas Pipeline EI Paso Natural Gas Company has an easement for a gas pipeline through the project area. They have been notified of our intended plans, and their response letter is shown in the Appendix, Attachment A, in the Specific Plan. GRANITE CONSTRUCTION COMPANY DEVELOPMENT CAPABILITY REPORT 21 H. Composite Characteristics Exhibit DCR XI, page 23, is a composite map with highlights of the Tangerine Road property. Below is a written composite showing characteristics of the property. 1. Topography The cross -slope average is 1.7 percent. The area is relatively flat with no outstanding features. 2. Hydrology The site has been removed from the 100 -year floodplain with the construction of the Santa Cruz River bank protection. GRANITE CONSTRUCTION COMPANY DEVELOPMENT CAPABILITY REPORT 22 C/) 3 mo m KH mD 0o r Q < tv_ b � m m X Cl) m m J N D O � � A O 3 � -0 CD -0 "O -v 'U v m -O ��s�voXo x-�o t°v�—�o-c3vu3 -�o0D tZ s1 N N iU ca Ca N 0 o N Q C_7 n < to 0 n �. �. 0 CD � m uQi tQn aQ3'v(a ° CD C: O -a __=OZrO cl) _ is CD CD Q =r (D N CD CD' (Cc: CL CL= C�2 CD =r (a m D CD 0 O o u, 3 m n W GJ< u:- r@ a .h fli13 � O 0)NC31U1� �or- � Q CD Q CQ i • ! 0 CD cD_ n :c CD ,m rn v v QF'C!•C U � n O Z Cn 70 -.• O O -Os Q o X O Cf)Q n `0 Q Q co -- 0) O Cn 0) tn. 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Cl) =s• c Cn Q 00 CD CL N CD 0 -- o Q (o = Co to O N, Q Ix o Q O CD CQ CD N CD Cr <N O °o n CQ CQ CD CD CD x 0 CD �? 7c O o °-+�O�_,�• �CQ U -a tD D ctN O vu:3 :3 o 3ooQacaMDCD v mcmD oCn :3 =3 U) � CD 0 vsnv Q O O : Q — e�i � 0 h z Q m w K J I F-1 r I SPECIFIC PLAN 1 1 Ll SPECIFIC PLAN Revised July 18, 1994 TABLE OF CONTENTS INTRODUCTION A. Purpose ............................................... 2 SPECIFIC PLAN DESCRIPTION A. Location of Property ...................................... 3 Permitted Uses ........................................ 26 Exhibit SPI ....................................... 4 B. Compatibility with Adjoining Property .......................... 5 C. Zoning Regulations and Guidelines ............................ 6 Exhibit SP II ...................................... 7 D. Site Development Standards .............................. 8 1. Sand and Gravel Mining .............................. 8 Exhibit SP III ...................................... 9 2. Plant Site/Aggregate Processing ........................ 10 3. Concrete and Aggregate -Related Manufacturing ............. 10 4. Industrial Development .............................. 10 5. Reclaimed/Mined Area .............................. 10 E. Hydrology Plan ......................................... 11 Exhibit SP IV ..................................... 12 Exhibit SP V ..................................... 13 Exhibit SP VI ..................................... 14 Exhibit SP VII ..................................... 15 F. Phasing of Development .................................. 16 1. Initial Phase: Zero to Five Years ....................... 16 Exhibit SP VIII .................................... 17 2. Transitional Phase: Five to Twenty Years ................. 18 Exhibit SP IX ..................................... 19 3. Ultimate Phase: Twenty to Twenty-five Years ............. 20 Exhibit X ........................................ 21 G. Excavation and Operation Plan .............................. 22 Exhibit SP XI ..................................... 23 H. Access and Interior Circulation .............................. 24 Exhibit SP XII ..................................... 25 Permitted Uses ........................................ 26 J. Definitions of Permitted Land Uses ........................... 26 1. Sand and Gravel Mining ............................. 26 2. Plant Site/Aggregate Processing ........................ 26 3. Concrete and Aggregate -related Manufacturing ............. 26 4. Industrial ........................................ 27 5. Reclaimed/Mined Areas .............................. 27 K. Resource Conservation ................................... 27 L. Landscaping and Open Space Plan ........................... 27 Exhibit SP XIII .................................... 28 Exhibit SP XIV .................................... 29 M. Reclamation Plan ....................................... 30 Exhibit SP XV .................................... 31 Exhibit SP XVI .................................... 32 N. Amendments .......................................... 33 APPENDIX .............................................. 34 11 11 11 SPECIFIC PLAN ' PREFACE At the request of the Town of Marana, the format and content of this report will assume that the proposed Santa Cruz River bank protection is in place in order to ensure consistency of the report and facilitate review. The scope of this project is designed around the bank protection as a finished project, and excavation will not commence within the current ' floodway boundaries unless and until the bank protection project is completed. Due to the fact that the final design for the bank protection has yet to be determined, the mining setback from the protection is assumed to be 250 feet. This assumed distance is per the request of ' the Town of Marana, pending final design. Subsequent to our submittal to the Planning and Zoning Commission, the area of the plan has been downsized to include only the eastern 160 acres; the western 140 acres may be the subject of a latter specific plan amendment. 11 11 11 L 11 11 u 11 I� I. INTRODUCTION A. Purpose The purpose of the Specific Plan is to set forth guidelines and regulations to allow Granite Construction Company to extract and process sand and gravel from its property located within the Town of Marana. The Plan also provides for ongoing reclamation of the land and future industrial development in conjunction with the mining activities. This plan, at the request of the Town of Marana, assumes that the lower Santa Cruz River bank protection is in place, prior to any development in the current floodway boundaries. The Specific Plan sets forth three phases of development for the site. The first phase (the "initial" phase) will focus mainly on the extraction and processing of sand and gravel. The second phase (the "transitional" phase) consists of mining, reclamation of the land, and interim land uses. The third and final phase (the "ultimate" phase) is where land reclamation is complete and ultimate development is to take place. The Plan includes guidelines for each of these three development phases. It also sets forth land uses which will be permitted on the site and includes site development standards for these uses. Granite has worked extensively with nearby landowners and the Town of Marana to address concerns regarding our proposed mining operation. This revised Plan integrates provisions such as increased buffers and landscaping in order to help alleviate these concerns. The guidelines contained in this Plan are designed to assure the Town of Marana that the development will be a positive addition to the community. The development resulting from this Plan will provide opportunities for the Town of Marana in the form of revenue generation from taxes, competitively priced construction materials, and employment opportunities. GRANITE CONSTRUCTION COMPANY SPECIFIC PLAN 1 2 SPECIFIC PLAN DESCRIPTION A. Location of Property The Granite property is situated within the town limits of Marana in Pima County, Arizona. It contains approximately 300 acres on the south side of Tangerine Road, three-quarters of a mile west of Interstate 10. The eastern 160 acres are the subject of this specific plan. The property surrounds the Pima County Tangerine Road Landfill on three sides. The Santa Cruz River forms the south/southwestern boundary. The property boundaries and locational context are illustrated in Exhibit SP I, page 4, the Regional/Vicinity Map. A legal description of the property is included in the Appendix. GRANITE CONSTRUCTION COMPANY SPECIFIC PLAN 3 SANDERS ROAD() 0 0 D_ < D m D � -D 1— D O D D < n o D z D � F- m -< O �. D z 0 z z �ti N ;a n z � o D �z SCENIC DRIVE O -o �e8 S IF1 D ^ ad08 \ FTIz 0 ^ Y O o o O M C 00c) ZD Z 171 iZ - 0 rrl Z 00 �M m icz ZZ� a� �o a -Z .� C r- m C7O n Zm� m< > O ...� Zm Z 0 M ic m o —� ��Cop CA a Z 'l7 Z B. Compatibility with Adjoining Property Granite's Specific Plan proposes land uses which are ideal for this area. The ' area includes Arizona Portland Cement, CalMat of Arizona, and the Pima County Regional Landfill. Granite's property is bordered on the east by the CalMat property. The CalMat development is the same as that proposed by ' Granite. The two companies operating side by side will keep construction materials competitively priced throughout the duration of the project. With residential, commercial, and industrial expansion expected in the immediate ' future, this means a great deal of savings for the Town of Marana, Marana businesses, and their residents. The property adjacent to CalMat is Arizona Portland Cement. This plant is one of only two cement -producing plants in the State of Arizona. ' To the south and west lies the Santa Cruz River. The river forms a natural buffer up to a half mile wide between the Granite property and properties to the south. To the north/northwest there are two farms which have no development plans at this time. Granite's plans would have no detrimental impact of these farming operations. Granite's site includes a quarter mile of frontage on the paved portion of Tangerine Road across from the MSP property. The MSP property is currently farm land but was zoned several years ago for the development of an R.V. Park. Granite has discussed their Plan with MSP and their planning representatives. To address MSP's concerns, Granite has agreed to provide a 300 -foot setback from the MSP property for all mining uses and has agreed to increase landscaping along our berm on Tangerine Road. These provisions have been incorporated into the Plan. Granite has even offered to place an earthen berm on the MSP property to further buffer and provide a good transition between the two developments. The Granite property surrounds three sides of the Pima County landfill. Clearly, proximity to this landfill limits the types of uses appropriate on Granite's site. The mining uses proposed in Granite's Specific Plan are particularly appropriate for this site. Rather than abandoning the property once excavation is complete, Granite has included in this Plan provisions to ultimately develop portions of the property with industrial use and to provide a linear open space easement along the Santa Cruz River. As is apparent, the development laid out in the Specific Plan is very well suited for the location. With CalMat of Arizona, Arizona Portland Cement, and the Pima County Regional Landfill all located within such a close proximity, the Granite development is ideally suited for the property. Granite is planning on making this property productive for both the Town and Pima County. GRANITE CONSTRUCTION COMPANY SPECIFIC PLAN 5 C. Zoning Regulations and Guidelines In accordance with the provisions of A.R.S. Section 9-461.08 and Marana Ordinance 05.06, the Specific Plan includes regulations of the land use, which once approved and adopted will serve as the zoning ordinance for the site. As illustrated in Exhibit SP II, page 7, the zoning of the property will be SP (Specific Plan). Allowed uses under the SP zoning will include mining of sand and gravel, plant site/aggregate processing, concrete and aggregate -related manufacturing, industrial, and reclaimed/mined areas. The permitted uses are defined in Section J of the Plan and standards governing development within each of the land use areas are included in Section D of the Plan. The locations of each of the allowed land uses will vary during each of the phases of the Plan. The general land use patterns for each phase are shown on Exhibits SP VIII, IX, and X, on pages 17, 19, and 21, respectively. All construction and development within the Plan shall comply with applicable Marana ordinances including site plan review procedures and building permit regulations not inconsistent with this Plan. In addition, Granite's operation will be governed by regulations administered by Marana Floodplain Administration, Pima County Flood Control, Mine Safety & Health Administration, Arizona State Mine Inspector, Pima County Air Quality, Arizona Department of Water Resources, and Arizona Department of Environmental Quality. Granite will obtain and maintain all required permits and clearances during the life of the development. Operations will be conducted in accordance with such permits at all times. GRANITE CONSTRUCTION COMPANY SPECIFIC PLAN 6 J W G7 D D� Z� z Z z 0o rn (A� ;u < �o rn Z C) Z-+ C7 O -u Z a z r m 0 m z v a z G) m �o 9 z 3 D. Site Development Standards The following standards provide the foundation for implementation of the Specific Plan. Allowable uses are set forth in Section I of the Plan. Exhibit SP III, page 9, shows the setbacks for the property. At this time the mining setback for the Santa Cruz River Bank Protection is assumed to be 250 feet, at the request of the Town Of Marana. 1. Sand and Gravel Mining: a. • Setback from property lines shall be 50 feet. • Setback from the MSP property shall be 300 feet. • Setback from the Santa Cruz River bank protection shall be as required by an intergovernmental agreement between The Town of Marana and Pima County. At this time the assumed distance is 250 feet. • Setback for EI Paso Natural Gas easement shall be 25 feet. • Setback from the Pima County Regional Landfill shall be 50 feet. b. Maximum finished depth of excavation shall be 100 feet. C. Excavation side slopes shall not exceed the angle of repose for the specific soil type. GRANITE CONSTRUCTION COMPANY SPECIFIC PLAN 8 N o (7 D r u ( rn Z 'p 4 O0 0 C I' CO) i' 0 �i_n X I' m C M I p C o I' 'nm r l: CO) I: M m 1' :Az '0 Z I m -u < o 0 I' m m0 .I' o I' �o mr I:cn Dye a`� rrn c :n ( DSD rrnn D _ ( D'o zrrri (r'z o a :I Z,� (n is o o _I - I I. ca :I l: I: L :I I' -n m n fl. 1 Z :Ia n ,. z M �1 E Ln o m I _ o z jm O iv M Cl) Zr a 00 D z MZ00 Z � 0o m cz Z -� CO) m �' m m �° Z Z 0 rn zm� o K — m<Z mm --1 y 0� n �� M a 0m NU rZ (n Z r ��0 �p = -� >z Z z 2. Plant Site/Aggregate Processing: a. Setbacks to property lines for buildings shall be a minimum of 30 feet. b. Maximum structure height shall be 80 feet above natural adjacent grade. 3. Concrete and Aggregate -Related Manufacturing: a. Minimum building site area shall be one acre. b. Setbacks to property lines for buildings shall be a minimum of 30 feet. C. Maximum structure height shall be 60 feet above natural adjacent grade. 4. Industrial Develoament: a. Minimum building site area shall be one acre. b. Setbacks to property lines for buildings shall be a minimum of 30 feet. C. Maximum structure height shall be 40 feet above natural adjacent grade. d. Minimum landscape coverage shall be ten percent of gross site area. 5. Reclaimed/Mined Area: a. All mined areas will be reclaimed to varying elevations with inert material and overburden, when available, and may be improved with landscaping and other recreation or drainage features. b. Landscaping shall consist of only native, drought -tolerant plants. C. Landscaping shall be designed and used to act as a visual screen and buffer in transition areas between uses and on the site perimeter. d. Upon completion of excavation and development of the site as specified in the ultimate phase, the 140 -foot easement for the levee can be used as a linear path or multi -use (pedestrian, bicycle, and equestrian) trail system. This system can connect with the linear open space area planned in the CalMat development. GRANITE CONSTRUCTION COMPANY SPECIFIC PLAN 10 E. Hydrology Plan As previously noted, this Plan assumes completion of the Santa Cruz River bank protection, prior to any development in the current floodway boundaries. The site is currently located within a 100 -year floodplain related to the Santa Cruz River. Hydrologic studies indicate a potential for bank overflow from the river channel immediately along the south boundary of the site. The Pima County Flood Control District is currently planning a bank protection project which will include the construction of a levee along the Santa Cruz River along the south boundary and through the southern portions of Granite's site. It is anticipated that the levee will be constructed within the 140 -foot open space easement granted by Granite. The location of the levee is illustrated in Exhibit SP IV, page 12. The construction of a flood control levee along the Santa Cruz River will remove the site from the 100 -year floodplain. An example of the levee cross section is shown in Exhibit SP V, page 13. Due to the flood danger, full development cannot occur until the levee has been built. As per the tributary drainage report from RUST Engineering, there is minimal surface drainage in this area. Drainage features within the mining area will be designed so that all runoff will be retained on site, thereby ensuring no damage to adjoining properties. Features will consist of a network of ditches, and berms, as shown in Exhibit VI and VII, on pages 14 and 15. When new areas are opened up in the pit, the drainage protection will be increased to include those areas. All surface drainage shall conform with the applicable Town of Marana ordinances. During the transitional and ultimate phases of development, drainage features ' will be capable of accepting and disposing of all surface drainage without damage to infrastructure or adjoining property. Drainage features during these advanced stages of development will most likely consist of underground piping, ' concrete box culverts, and lined channels. 11 GRANITE CONSTRUCTION COMPANY SPECIFIC PLAN 1 11 Q n D m _ E►�+ N vcn -4I N Ln z C G7 I C 1' m F 0 D 0c m lu r I o to m I o M m m � z I n m I -o z z� F-;uo m 0 o I Pi 0 o � ' cn cn mCtm r I o'> TI O I z,� 0 1 >`o `Z I. .I I. .1 I: I: Ii Cl) i� I m n I' 7o I: Z m rn o O a o �D o Z > 0n1� _� Z ;Z oom rrIC-) 0 z m icz 0 Z o -o toy -< < � --1 r- M �J � u o K 0 0 M 0 -A C/) ��U) �_ o Z r. w n O ` -< Z W< z X �D � U) -O zfel O z Z D O � D n 0 O m Z U) --I C --A O Z 0 0 N -O _ O m O -0 C/) O � m <D D Z (� m furl (n D o D U Z C7 K n m z m m -A m m Z D -I (n K m Z -A N tin 0 3 J. (A tr a O n x ao Z �: > 0 0 G) Cl) -v zZ 00 Z .� m Cl) 0o m icz m O Z -p ca Cl) Cil 0 -� �M m a Z m O -i 0 0 z�� o �n O m •< 'i F- 0 m O �"� o 0 M 0zm Km �� = O< N nO Z Z> �z z � o C7 D ' f i a z M II I 00 U) o LP Fn .I' o 0 (' cX_n h -n D m I' I A !: 0 M-0 z I:n O m I : M �° z K zn m x z o ( mo o I mo o I N cn mm r- I ' A O`D o:I Z,(-)0 I rD�OC `Z z :I z 0 :I r r I: :I I: :i I: I: I, U) I' m :l I I: A'A .o � . a n I: ( z �m ! 7o z Z m o �v o C) D 0 Z a nG C� D �Z :4Z oom z rrI m cz < w > �l Z0 a0 0 Zm� n Q t� o K —-� C —� Z�, n n Zz M ...0 n --i 0 �— w .q 00 -� m a z �O a z O z r rn -t a W .Z C) a w m z z aW cr. o w 0 oc ao �- oc M r (_ mZ _ cc o co LL) Exhibit SP VII SPECIRC PLAN 15 F. Phasing of Development Development of the site will occur in three phases: initial, transitional, and ultimate. The phasing plan is designed to allow alternative land uses that are compatible with the sand and gravel extraction. The phasing plan is also designed to utilize the site in an efficient manner beginning with excavation in the northern portions of the site furthest from the bank protection. Subsequent phases move the excavation area south and west. Due to the.fact that the life of the project depends on several factors, including economic trends, market demand, and others, it is impossible to predict the actual life of this project. The time limits associated with each phase are estimated and based on a 25 - year project life. 1. Initial Phase: Zero to Five Years The land use plan for the initial phase is depicted in Exhibit SP VIII, page 17. As shown on the plan, activity will consist primarily of mining and processing during the initial phase. A plant site area is also designated, and the remainder of the site will continue in its natural state. The initial excavation area will be 20 to 40 acres in size located at the northern portion of the site. This area may be excavated prior to the bank protection being in place, as is consistent with Marana Ordinance 90.13, Floodplain and Erosion Hazard Management Code. The overburden or topsoil removed prior to mining will be used to construct a berm 8 feet in height along the Tangerine Road frontage. The berm will act as a visual and noise barrier, buffering the mining activities from neighboring properties and Tangerine Road. The berm also serves as a stockpile of material for the reclamation of the project. Processing activities will include crushing, screening and washing, and production of hot asphaltic concrete, portland cement concrete, and other related activities. GRANITE CONSTRUCTION COMPANY F-1 SPECIFIC PLAN 16 w G7 D D ZD Z �--42: z 0o rn (Ar Cl) ;u< rn FD K 0 z Fr, _ ni 0 � <'O Z z I I:I cj� L �:o ooC;) c� ic� a >Mqz M < a ..<Cmqrn 0D o� o k ,\o < z N I I:I cj� L �:o -o c� -o -Ti > M < a FTI 0D o� m k ic < z N za` -1 z �cj�F—(f)FTI D ::� s z z Frl z z r� � z 0 z F- <Fri G� I'1 r m G) m z v a z 0 m z m m 0 a v z a r' r v > M < a me o� m k ic rn� N za` -1 z 2. Transitional Phase: Five to Twenty Years The land use plan for the transitional phase is shown in Exhibit SP IX, page 19. During this phase the initial excavation area will be reclaimed. Overburden materials will be placed in areas where excavation is complete, thus starting the reclamation process. Additional reclamation will be done in this phase utilizing fill dirt, broken concrete, and other inert materials, compacted to 90-95 percent density. There will be no particles greater than 12 inches in diameter within 5 feet of final grade. These areas will have varying depths of final elevation. Only materials classified as inert by the Arizona Department of Environmental Quality will be used for reclamation. In the Appendix, Attachment B, there is Located the definition of inert material as specified from ADEQ. This definition was passed as Senate Bill 1417, in the Forty-first Legislature, Second Regular Session, 1994. Excavation will begin in the areas to the south and west, closer to the plant site. Aggregate and concrete -related manufacturing will continue. Portions of the site will also be used for storage. The southernmost portion of the site in the river channel will remain in its natural state. GRANITE CONSTRUCTION COMPANY SPECIFIC PLAN 18 (n O 0 I' m w I �U mz V 4 (2 Fn D z o I' m -n oc� Q I 0C: z I' O c I 'n m ca � m-0 ny In Z I 6 to z� .I I'A o -o I' "'0 V) n --I d M' Ru Qo " �. I: no 0 Z,(-) I r,oO I D•� :I z :I r r I: :I I: :I 1: is r a N I �z I I: ' Z 10 I > —u 0 F C) � C) z G7 D -� �J �{7 D Z� 00c) o m 0 u� m t7 Z z —I m G� <mz oom z c� Mz m v o� rn icz -� o G-) r rn C zo -off D = D z < Z Frl FTI 0o r" Zm. z z � z 0Rt K: •< c --' n m C o 0 z r� '71 T1 Z z n M D -v D r" —� x Z _ m Z Z z z Z V J D � I �z 0 z 3. Ultimate Phase• Twenty to Twenty-five Years The land use plan for the final phase of development is illustrated in Exhibit SP X, page 21. During this phase land reclamation will be completed and ultimate development underway. The original plant site will be abandoned so that the remaining quality aggregates can be mined. Aggregate processing equipment will be temporarily relocated to the north in the reclaimed area created during the initial development phase. Excavation and ongoing reclamation will take place on the original plant site. Aggregate -related manufacturing may continue as long as materials are available from excavation. Reclamation will be completed at varying depths using inert fill, compacted to 90-95 percent density, with no particles greater than 12 inches in diameter within 5 feet of final grade. Reports for drainage, soils, or other required engineering will be addressed at this time. Any industrial development will abide by all applicable regulations and ordinances. GRANITE CONSTRUCTION COMPANY SPECIFIC PLAN 20 0 �,N -41A I' t z -0 OCA I N � -p C EDt' 2!m I' t m -n � C O C M 'nm — t: M V V � nv me r -n z I. n 0 D �n ic rn .M m I rim ' ; 0 r'' o (nIn II -A m,� WN C t : nLn 5,D II r - ,C C4 lu m h 1= i i D i i i i iz m �z �m 10m Iv Z 000 =-i z Z Fll �l C < z G) �,z-4 o0 oz��, -��M Mr� r-- m 0 m icz c) 0 d CA c M � Z > � z D �r n zm� ,,� rz z n z o � -� C r- -r, o c� ...D Zz ��0 C) CA Q n Z r �nO m N a Z z N 2 z C C) r � -p �u M D va i i D i i i i iz m �z �m 10m Iv Z 000 =-i z Z Fll �l C < z G) �,z-4 o0 oz��, -��M Mr� r-- m 0 m icz c) 0 d CA c M � Z > � z D �r n zm� ,,� rz z n z o � -� C r- -r, o c� ...D Zz ��0 C) CA Q n Z r �nO m N a Z z N 2 z C r M ,- va M <o me r olm ic rn r- N 9 m ax -i z IG. Excavation and Operation Plan 7 The excavation plan shown in Exhibit SP XI, page 23, illustrates the phasing sequence for mining and extraction uses. The plan is designed to maximize sand and gravel mining opportunities and to allow productive uses of the land once mining activities are complete. The first parcel to be excavated will be that immediately south of the Tangerine Road setback. Topsoil removed prior to mining will be used to construct a berm along Tangerine Road, in Section One. The berm, which will be landscaped, will provide a visual and noise buffer so that views of and noises from mining activities will be minimized from the roadway and developments to the north. The topsoil in the berm will be used in the reclamation project once the industrial development on Tangerine Road is in place. This work will be completed on Granite property and will be out of the Tangerine Road right- of-way. The initial excavation parcel will also be the first to be reclaimed because it is the best suited for industrial development. Once developed, this site will provide an additional buffer between the ongoing mining operations on Granite's site and development across Tangerine Road to the north. Later phases of excavation will progress towards the south and west. Due to the fact that the mining setback for the bank protection has not been ultimately designed, Granite reserves the right to alter the excavation plan to best utilize its minable reserves. Excavation will occur to varying depths, but the maximum depth will be 100 feet. Fencing will be installed around the excavation areas as necessary to meet liability requirements, control entry, and protect the general public. Granite intends to run a one -shift plant operation during daylight hours. A small second shift will handle equipment maintenance. It may be possible that during the life of the development, demand for construction materials will occasionally require two production shifts. Periodically, there will also be construction ' projects that require delivery and production of materials during nighttime hours. 0 0 1 GRANITE CONSTRUCTION COMPANY SPECIFIC PLAN 1 22 N 4 D I' Z u m v I ca I L° F On 14 oCA I m C I n I: m CO) M M D 'n Z I. n 0 z� .I .I m� I' m -o i' mo NN ' - o Fil cr D N o, CO o D.o x r,c y lzi Z.-< a > :I O I: D m is :I I: I: i mO( m !: n � m �z D� 00) m I I =1 o m CC)I-rl I -o :I (n I m I� :I �m 0 a C7 co D n �o Fri '0 � m zD 00� � � x ;z Z OO m z 0 M� C zo mv) D D rn r < � --i z � Z C Z z p > C: r it1 m � m � O n Z r- m Z _a OK: C k FTI 0 ►-i � n Mp m C° C) z r -Dx v Fri Z t O Z= Z 11 L! 11 11 11 11 0 0 H. Access and Interior Circulation By necessity, access into the development will be from Tangerine Road. This roadway is currently improved to a width of 24 feet with two lanes from the interchange with Interstate 10 to the project site. The roadway has a sufficient capacity to carry the traffic generated by this development. Currently, as stated in a letter from Pima County Solid Waste Management, Appendix, Attachment C, the road carries 475 to 575 vehicles per day traveling into the landfill. That number includes 125 to 175 commercial vehicles per day. The landfill is scheduled to close in 1996. At that time the traffic will cease. Granite anticipates that this development will generate an average of 150 to 200 vehicles per day, less than half of that currently generated by the landfill. The maximum axle load per vehicle, as established by the Arizona Department of Transportation, is 17,000 pounds per axle. Internal circulation will be provided by private roadways a minimum of 30 feet in width. These roadways will be designed and built according to the land use and traffic volume they will serve. The roadway system will be safe and appropriate for all vehicle types utilizing it. The general roadway plan is shown in Exhibit SP XII, page 25. GRANITE CONSTRUCTION COMPANY SPECIFIC PLAN 1 24 N Q 0 D 1 Z m m 1 00 4 ch v I' �Fn Ln u I' M -n I' O C m ,1 m -U I Az I n 0) .00 .I I' rn-u � O 1' N I' mm � O (: mn� m� D �•D C) O O INI :I Z� 0 r I: :I I: :I I: I: :I I I: CA I: l n :I -n I : �{ 5Oo : I I L 1 Z Z I jo I: rn � rn Iv Z z 00 (n � O —IZ Z >2> M 0 Om m rm �r=D Z Z o MCI) �u V) v CA� c - a D� M>�l Zrn�� a m zm - �Z Z A -a-Ti > O K < r � C Zz _ � � v y � n �� M En O COEn O ?� x Z a �Z � z z J. Permitted Uses Land uses permitted within the Specific Plan are as follows: 1. Mining of sand and gravel. All activity will be governed by any applicable Town of Marana Ordinances. 2. Plant site/aggregate processing. 3. Concrete and aggregate -related manufacturing . 4. Industrial. 5. Reclaimed/Mined Areas. Definitions of Permitted Land Uses 1. Sand and Gravel Mining: This use is limited to the extraction of sand and gravel at a maximum excavation depth of 100 feet. Sand and gravel mining will occur at various times all across the property during all three phases of development. Depth of excavation will vary based on aggregate quality. No mining shall take place in the Santa Cruz River channel without the proper permits or authorization of the responsible authorities. 2. Plant Site/Aggregate Processing: Plant site/aggregate processing uses include vehicle maintenance and storage; crushing, screening, washing, and stockpiling of sand and gravel; and production of hot asphaltic concrete and portland cement concrete. All processing and maintenance work shall abide by city, county, state, and federal environmental rules and regulations. Approximately 20 to 40 acres are designated for this use which will occur during all three phases of development. A dispatch and sales office will be located within this area, as well as other equipment deemed necessary to conduct business. Certain areas will also be designated for storage. 3. Concrete and Aggregate -related Manufacturing: This land use may include various concrete or aggregate manufacturing activities such as manufacturing of concrete block or ornamental concrete objects. Storage areas for the manufactured products will also be permitted. This land use will occur during the transitional and ultimate phases of development. GRANITE CONSTRUCTION COMPANY SPECIFIC PLAN 26 ' 4. Industrial: ' This land use will accommodate industries involved in manufacturing, distribution, and warehousing. This land use will occur during the ultimate stage of development only. ' 5. Reclaimed/Mined Areas: n n I i Reclaimed/mined area uses include buffers and transitional areas between land uses, recreation, drainage retention, and groundwater recharge. Reclaimed/mined areas may also simply be used to designate undeveloped portions of the site. Reclaimed/mined areas are provided in all three phases of development. K. Resource Conservation Resource conservation is an important component in our daily operations. Water conservation is an area of concern for Granite. We are continuously researching methods in which to conserve groundwater. All of the vegetation on the site has been registered with the State Agriculture Department. By doing this, Granite has put up for salvage vegetation that which may be used in other developments. In order to aid in the return of natural vegetation and wildlife, excess overburden will be used in the reclamation of the project. This material is excellent for the reestablishment of the original environment. L. Landscaping and Open Space Plan Landscaping and berming will be used to screen and buffer the mining operations from nearby properties. An eight -foot high berm will be constructed along Tangerine Road in Section One. The berm will be landscaped with trees and/or shrubs (Exhibit SP XIII, page 28). The berm will also serve as a visual screen and aid in soil stabilization. As development moves to the transition phase, additional landscaping and berming will be installed to enhance and beautify the project. The general location of the berm is shown in Exhibit SP XIV, page 29. GRANITE CONSTRUCTION COMPANY SPECIFIC PLAN 27 Z LJ O F- —CD>zCD > z Q Z U U Q <X J LL- Lu m Of W m 0 W n W Q U U Z (� LU p LL- Z Q Lo J i (n Cy LL) cf)a W U m o0 J z U Li W O m N Of O J CD m 7- < F -- 6 Q6 (v) Exhibit SP XIII SPECIFIC PLAN 28 id �"�(-jz D M ��� coo Q r Z � a nn N-0 rn -D Z 0 > ;Z MZ �-rnM2 > m o0 M icz > FT,M � Z Zo Nosy D z v �C C �� > Co c ' >-i Z —I > z n o n Z m. D FTI U) c) 0 — ,,,<c�j ;u0�� ZZ -Ti MM OM 0m N � >�� D ` r z > Z D z Z M Z rwa Z 0 M m x M a� x IM. Reclamation Plan ' The reclamation plan for this project addresses the final development of the site after all excavation has been completed. The overall goal of the reclamation plan is to allow industrial development on useable portions of the site, and to ' provide for an attractive appearance on remaining, undeveloped portions of the site. Reclamation of mined areas will begin as soon as the excavation of individual ' areas is complete and will continue until all mined areas are reclaimed. As such, reclamation will occur throughout all three phases of the Specific Plan, beginning in the areas that are nearest to Tangerine Road. Inert materials and ' overburden will be used to fill and reclaim the areas which have been excavated and mined. Although the property may not be returned to its original, natural grade, reclaiming the site in a manner that provides for an attractive, useable site is in the best interest of Granite, as well as the Town of Marana. Clearly, Granite has a vested financial interest in using as much of the property as possible after excavation is completed in order to continue obtaining revenue from the site. To best utilize the property following the completion of mining and excavation, Granite will use the following criteria to guide reclamation of the site: 1. Provide for permanent, attractive industrial development or landscaped/open space on reclaimed areas of the site. 2. Revegetate slope areas with drought -tolerant, native plants. 3. Conform all slopes with applicable Town of Marana ordinances. 4. Integrate open space, buffers, and landscaped areas into terraced slopes and other areas not developed for industrial uses. 5. Create a variety of depths and grades for the site, planning for maximum development possibilities. 6. Use overburden material from the project (when such material is available). Exhibits SP XV and XVI, pages 31 and 32, conceptually illustrate Granite's vision of the ultimate development of the property. Because these drawings were based on current industry standards, actual industrial development of the property may vary somewhat, depending on the time frame in which the industrial development actually occurs. However, to ensure the maximum return on its investment, Granite will ensure that reclamation of the site will result in attractive, industrial development on the property, with a park -like setting on those areas of the site which are not able to be developed for industrial uses. GRANITE CONSTRUCTION COMPANY SPECIFIC PLAN 30 N o D I Z 'O a I O O ch L4 II l' c to �I C o �'1 I m .n 0C 1 n I : m I: ,nnz t : -j 0 I: z� .I .l' .I' .I' rn o�D I O Z•C-) r- C D�Z :I o CD :I r r I: :I is :I I: !i I I O M /F z �M o .I Z is co Ila � z -u 00 M m ;Z Z o oC n z j rTl m cz m � Z 0 -v CO)r (Am M� a�1 z o cr m �0 n zm� 0 K ic m mq :T� n �� M m- 0 C rt CO no j\)z Q Z 111-O -i Z -< � z z w N 0 a fl a 0 m 0 m v as z v, v �a z� a nn mm -D ;Z Z OOMa s C0 z j a s rn 00 X71 icz- Z o 'p co > r" m �' O m o < > Z cM rn Z �,. a s _' m o O K m< a a C m Z rr, n � x cr -� o c0 �' x rn oo �. < r'O "l Z z � tml Z 2 —< i - Z 101 Amendments In accordance with A.R.S. Section 9-461.09, the Specific Plan may be periodically amended by the same procedure through which it was adopted. An amendment may be initiated by the property owner or the Town of Marana Planning Commission. GRANITE CONSTRUCTION COMPANY SPECIFIC PLAN 33 EIPaso P. OX 1492 Natural Gas Company PHO E: 915-545-2600 8 April 21, 1994 Mr. Ken Kubacki Granite Construction Co. Tucson Branch Box 27557 Tucson, Arizona 85726 Re: R/W 940100 Enc: Sand and Gravel Mining Site - Granite Construction Co., Tuc/Phnx Line (1007), Pima County, Arizona Dear Mr. Kubacki: This letter supersedes our letter dated April 14, 1994, (copy captioned project. 1. The set -back of twenty-five feet is acceptable on either side limits. ) for the the easement 2. The slopes adjacent to the easement of 1:1 are unacceptable -Minimum slopes discussed were a minimum of 1' vertical to 2' horizont I. 3. The flatter slopes are necessary due to the anticipated 80-100 feet depth of pits. 4. Granite Construction Company agrees to maintain slopes to prevent potential degradation of the 25 foot setback buffer zone. In essence, this zone will always be drivable and flat, with no discernible erosion evident. An action plan must be provided by Granite as part of our agreement. 5. Seeding is unacceptable to prevent bank erosion on a 1:1 slope. Even with the requested 1' :V to 2' :H slope , a better method of slope protection is required. A vegetative mat, such as jute or an equivalent, impregnated with seed material is better. Attachment A, page 1 Mr. Ken Kubacki April R/W 940100 Pag 6. No overburden of any kind will be allowed over the EPNG foot buffer zone. 7. Any road crossings over the easement will be tightly control receive EPNG prior approval for location and use. 1, 1994 or 25 and must 8. No excavation of the pit adjacent to the pipeline can commence until Granite Construction Company provides evidence that Pima County Flood Control District has built the proposed soil cement dike on the Santa Cruz River. Should you have any questions, or require further assistance, please feel free to call Mr. Samuel Carreon, at 915/541-3013 or Ms. Margie Sanchez o this office at 915/541-2688. If the foregoing terms and conditions meet with your approval, pie acceptance by an authorized agent of Granite Construction Compe space provided below and return one original of this letter to EI Pa enclosed self addressed envelope. Very truly yours, A;141 - Edwin 0. Nichols Administrator Securities Group Right of Way Department mvs Enclosures AGREED TO AND ACCEPTED THIS day of By: Title: cc: E. 0. Denman S. Carreon indicate signing in the in the 1994. Attachment A, page 2 E! Pi35D NatwW bas rompany May 2, 1994 Mr. Ren Kubacki Granite Coustruction Company Tucson Branch Box 27557 Tucson, Arizona 85726 &e: R/W 940199 Enc: Send & gravel Mining Site — Granite Construction Go., Tuc/Phnz Line (1007), P.�: '01tatey. Arizona P. a EL R Dear Pyr. Kubaeki: In accordance with ay telephone conversation with Sam Garre= this de concerning the captioned project, E1 Paso has no objections to Your v provided that no drainage problems occur. Very truly yours, Margie V. Sanchez Analyst SecurltIes Group Right of Flay Department Mrs cc: B. 0. Denman S. Carreon Attachment A, page 3 1 House Engrossed Senate Bill 'F I MMD AM ' S�67AlK OF *i3� State of Arizona Senate Forty-first Legislature Second Regular Session 1994 CHAPTER 273 ' SENATE BILL 1417 AN ACT C , 7 I Attachment B, page 1 AMENDING SECTIONS 49-250, 49-501, 49-701, 49-705 AND 49-761, ARIZONA REVISED STATUTES; AMENDING TITLE 49, CHAPTER 4, ARTICLE 4, ARIZONA REVISED ' -STATUTES. BY ADDING 'SECTIONS 49-761.01 AND 49-761.02; AMENDING SECTION 49-762. ARIZONA REVISED STATUTES; AMENDING TITLE 49, CHAPTER 4, ARTICLE 4, ARIZONA REVISED STATUTES, BY ADDING SECTION 49-762.01; AM4NDING SECTIONS 49-763, 49-764, 49-767, 49-770, 49-771, 49-772, 49-773, 49-774. 49-791, 49-837, 49=851, 49-854, 49-855. 49-858 AND 49-864, ARIZONA REVISED STATUTES; REPEALING SECTION. 49-766, ARIZONA REVISED STATUTES; AMENDING TITLE 49, CHAPTER 4, ARTICLE 4, ARIZONA REVISED STATUTES, BY ADDING A NEN SECTION 49-766; PROVIDING FOR DELAYED REPEAL OF SECTION 49-761.01, ARIZONA ' REVISED STATUTES, AS ADDED BY THIS ACT; RELATING TO SOLID WASTE. 1 Be it enacted by the Legislature of the State of Arizona: 2 .Section 1. -Section 49-250, Arizona Revised Statutes; is amended to 3 read: • 4 49=250 ion 5 6 ,: d, by rtile, =wpi. :if1r filly c3ef:cv."Ibed C"•. "AlR A. The reactor or citegwries of facilities fes; •: the aquifer 'prdtac ion-. it 7 requirements this •article finding t t ' t3here is W.) of an a either 8 reasonable probability of degradation of the aquifer'or that aquifer wat4r 9 quality will to maintained and protected becru:Me the disc ra=gas frw such ' 10 facilities arm regulated under other ,?ederdl or stake Programs that 11 provide the same or greater aquifer water quality protection Ass-prozided 12 by this mtkie. 13 B,. The following are exempt from the aiqulf:rr prots% tion perwit ' 14 requiremtnt of this article: 15 1. Household and domestic activities. 16 2. Household gardening. lawn watering, lawn carer -landscape ' 17 maintenance and related activities. C , 7 I Attachment B, page 1 I S.B. 1417 1 2T 7. °Facility plan° means any design or operating plan for a 2 solid waste facility or group of solid waste facilities. 3 - 4. 8. "Household hazardous waste° means solid waste as defined in 4 40 Code of Federal Regulations section 261.2 as adopted on July 1, 1991 5 • that is derived from households and is categorically exempt pursuant to 40 6 Code of Federal Regulations section 261.4(6)(1) as adopted on July 1, 7 1991. 8 9. "HOUSEHOLD WASTE" MEANS ANY SOLI© WASTE INCLUDING GARBAGE, 9 RUBBISH AND SANITARY WASTE FROM SEPTIC TANKS THAT IS GENERATED FROM 10 HOUSEHOLDS INCLUDING SINGLE AND MULTIPLE FAMILY RESIDENCES, HOTELS AND 11 HOTELS, BUNKHOUSES, RANGER STATIONS. CREW QUARTERS, CAMPGROUNDS, PICNIC 12 GROUNDS AND DAY USE RECREATION AREAS, NOT INCLUDING CONSTRUCTION DEBRIS, 13 LANDSCAPING RUBBLE OR DEMOLITION DEBRIS. 14 Aw 10. "Inert material2.tarans material that 15 so 46 4nsaiub4e 4n watep and will not decompose or leach substances FOR 16 WHICH AQUIFER WATER QUALITY STANDARDS HAVE BEEN ESTABLISHED BY RULE 17 PURSUANT TO SECTION 49-223 WHEN EXPOSED -to water, including uneentam4nated 18 bioken concrete, ASPHALTIC PAVEMENT, brick, rock. gravel, sand and soil. 19 11. "LANDSCAPING RUBBLE° MEANS MATERIAL THAT IS DERIVED FROM 2Q LANDSCAPING OR RECLAMATION ACTIVITIES AND THAT MAY*CONTAIN INERT MATERIAL 21 AND NO MORE THAN TEN PER CENT BY VOLUME OF VEGETATIVE WASTE. 22 bT 12. "Management agency' .means any person responsible for the 23 day to day operation, maintenance and management of a particular. public 24 facility or group of public facilities. 25 6w 13. "Medical waste" means any solid waste which is generated in 26 the diagnosis, treatment or immunization of a human being or animal or in 27 any research relating to that diagnosis, treatment or immnization, or in 28 the production or testing of biologicals, but not including hazardous 29 waste as defined in section 49-921. ' •30 14. "MUKICIPAL SOLID WASTE LANDFILL" MEANS ANY SOLID WASTE LANDFILL 91 THAT ACCEPTS HOUSEHOLD WASTE, HOUSEHOLD HAZARDOUS WASTE OR CONDITIONALLY 32 EXEMPT SMALL QUANTITY'GENERATOR WASTE. 33 15. "NEW SOLID WASTE FACILITY" MEANS A SOLID WASTE FACILITY THAT 34 BEGINS. CONSTRUCTION OR IS IN OPERATION AFTER THE EFFECTIVE DATE OF DESIGN 35 AND OPERATING RULES THAT ARE ADOPTED BY THE DIRECTOR PURSUANT TO SECTION 36 44-761, SUBSECTION A, PARAGRAPHS 2• AND 4 FOR THAT TYPE OF SOLID WASTE 37 FACILITY. 38 ;.w 16. "On site° means the same or geographically contiguous 39 property that may be divided by public or private right-of-way if the 40 entrance and exit between the properties is at a crossroads intersection 41 and access is by crossing the right-of-way and not by traveling along the 42 right-of-way. Noncontiguous properties that are owned by the same person 43 and connected by a right-of-way that is controlled by that person and to 44 which the public does not have access are deemed on site property. 46 Noncontiguous properties that are owned or operated by the same person 46 regardless of right-of-way control are also deemed on site property. fl -5- n I Attachment B, page 2 SUZANNE J. SHIELDS, P.E. Director CHRIS J. LEVERENZ, P.E. Technical Programs Manager June 9, 1994 PIMA COUNTY SOLID WASTE MANAGEMENT 130 WEST CONGRESS TUCSON, ARIZONA 85701 Mr. Ken Kubacki Plants Engineer Granite Construction Company P.O. Box 27557 Tucson, AZ 85726 PHONE (602) 740-3555 FAX (602) 628-7963 Re: Pima County Solid Waste Management Department, Tangerine Road Landfill Estimated Commerial Vehicle Count Dear Mr. Kubacki: Per our recent phone conversation, please find the information that you requested regarding the estimated commercial vehicle traffic count accessing the landfill via Tangerine Road. Pima County Solid Waste 1993 Tangerine landfill records indicates a monthly daily average between 125 to 175 commerial vehicles per day enters the landfill. If you have any questions, please contact me. Sincer /? Edward R. Lope Civil Engineer cc: Suzanne Shields COUNTY RECYCLING HOUSEHOLD•-'AZARDOUS WASTE Recycled Paper Attachment C, page 1 COMMUNITY CLEANUP WASTE DISPOSAL SUZANNE J. SHIELDS, P.E. Director CHRIS J. LEVERENZ, P.E. Technical Programs Manager June 2, 1994 PIMA COUNTY SOLID WASTE MANAGEMENT 130 WEST CONGRESS TUCSON, ARIZONA 85701 Mr. Ken Kubacki Plants Engineer Granite Construction Com1_Janv_ PO Box 27557 Tucson, AZ 85726 PHONE (602) 740-3555 FAX (602) 628-7963 Re: Pima County Solid Waste Management Department, Tangerine Road Landfill Estimated Vehicle Count Dear Mr. Kubacki: Per our phone conversation, please find the information that you requested regarding the combined commercial and residential estimated vehicle traffic count accessing the landfill via Tangerine Road. Pima County Solid Waste 1993 Tangerine landfill records indicates a monthly daily average between 475 to 575 vehicles per day enters the landfill. - If you have any questions, please contact me. Sincere- , 'c Y Edward R. Lope Civil Engineer cc: Suzanne Shields COUNTY RECYCLING HOUSEHOLD HAZARDOUS WASTE RecycW Paper Attachment C, page 2 COMMUNITY CLEANUP WASTE DISPOSAL I I I I L i I I I I I I I I Job No. 94-004 LEGAL DESCRIPTION March 29, 1994 PREPARED FOR: GRANITE CONSTRUCTION CO. BY: SMITH-ROLLINS INC. Legal descriptions for parts of Sections 1 and 2 of Township 12 South, Range 11 East, Gila and Salt River Meridian, Pima County Arizona. PARCEL 1: The North one-half of the Southwest one-quarter of said Section 1, described.as follows; BEGINNING at the Southwest corner of said parcel, thence North 00 degrees, 38 minutes, 52 seconds West a distance of 1320.13 feet to the Northwest corner of said parcel; thence North 89 degrees, 25 minutes, 19 seconds East a distance of 1321.34 feet; thence North 89 degrees, 24 minutes, 48 seconds East a distance of 1321.21 feet to the Northeast corner of said parcel; thence South 00 degrees, 37 minutes, 47 seconds East a distance of 1319.67 feet to the Southeast corner of said parcel; thence South 89 degrees, 24 minutes, 27 seconds West a distance of 2642.14 feet to the POINT of BEGINNING. Containing 3,487,470 square feet or 80.061 acres. PARCEL 2: The Northwest one-quarter of the Northwest one-quarter of said section 2, and that part of the Southwest one-quarter of the Northeast one-quarter and the South one-half of the Northwest one-quarter of said section 2 lying northerly of the following described line: BEGINNING at the Southwest corner of said Northwest one- quarter of the Northwest one-quarter of said section 2, thence southeasterly to the Southeast corner of the Southwest one-quarter of the Northeast one-quarter of said section 2. more particularly described as follows: BEGINNING at the Northwest corner of said parcel, thence South 00 degrees, 34 minutes 31 seconds East a distance of 1320.89 feet to the Southwest corner of said parcel; page 1 I I Attachment D, page 1 Job No. 94-004 LEGAL DESCRIPTION March 29, 1994 thence South 72 degrees, 08 minutes, 30 seconds East a distance of 4184.85 feet to the Southeast corner of said parcel; thence North 00 degrees, 36 minutes, 33 seconds West a distance of 1320.86 feet to the Northeast corner of the Southwest one- quarter of the Northeast one-quarter of said section 2; thence South 89 degrees, 27 minutes, 37 seconds West a distance of 1323.03 feet to the Northwest corner of the Southwest one- quarter of the Northeast one-quarter of said section 2; thence South 89 degrees, 27 minutes, 33 seconds West a distance of 1323.16 feet to the center of the Northwest one-quarter of the Northwest one-quarter of said section 2; thence North 00 degrees, 35 minutes, 31 seconds West a distance of 1320.89 feet to the Northeast corner of the Northwest one- quarter of the Northwest one-quarter of said section 2; thence South 89 degrees, 27 minutes, 47 seconds West a distance of 1322.78 to the POINT of BEGINNING. Containing 4,369,050 square feet or 100.299 acres. PARCEL 3: The Northeast one-quarter of the Northwest one-quarter of said section 2, described as follows: BEGINNING at the northwest corner of said parcel, degrees, 27 minutes, 47 seconds East a distance of to the Northeast corner of said parcel; thence North 89 1322.78 feet thence South 00 degrees, 36 minutes, 31 seconds East a of 1320.80 feet to the Southeast corner of said parcel; thence South 89 degrees, 27 minutes, 33 seconds West a of 1323.16 feet to the Southwest corner of said parcel; thence North 00 degrees, 35 minutes, 31 seconds West a of 1320.89 feet to the POINT of BEGINNING. Containing 1,747,380 square feet or 40.114 acres. distance distance distance PARCEL 4: An ingress/egress easement over the North 75.00 feet of the Southeast one-quarter of the Northeast one-quarter of said section 2. page 2 Attachment D, page 2 Job No. 94-004 LEGAL DESCRIPTION March 29, 1994 PARCEL 5: The West one-half of the Northwest one-quarter of said section 1 except that part described DOCKET 6412 at PAGE 947 in the Pima County Recorder's Office, described as follows: BEGINNING at the West one-quarter corner of said section 1, thence North 89 degrees, 25 minutes, 19 seconds East along the East-West one-quarter line a distance of 1321.34 feet to the East line of said'West one-half of the Northwest one-quarter; thence North 00 degrees, 36 minutes, 53 seconds West along said line a distance of 2608.68 feet to the South line of that parcel described in said DOCKET 6412 at PAGE 947; thence South 89 degrees, 27 minutes, 45 seconds West along said line a distance of 1321.12 feet to the West line of said section 1; thence South 0 degrees, 36 minutes 35 seconds East along said line a distance of 2609.60 feet to the POINT of BEGINNING. Containing 3,447,240 square feet or 79.137 acres This legal description was written under my supervision. page 3 Attachment D, page 3 4. GEOTECHNICAL INVESTIGATION REPORT.. Soepage and Slope Stability Analyses for Proposed Aggregate Pit Adjacent to Tangerine Landfill Pima County, Arizona r3232 West Virginia Avenue SHB AG R A � INC. .,. s .,-Phoenix, Arizona 85009 1 r B I Engineering & Environmental Services Phone: 602-272-6848 t , Fax: 602-272-7239 June 10, 1994 Granite Construction Company SHB Job No. E94-78 Post Office Box 27557 Revision No. 1 Tucson, Arizona 85726 Attention: Mr. Ken Kubacki Re: Seepage & Slope Stability Analyses for Proposed Aggregate Pit Adjacent to Tangerine Road Landfill Pima County, Arizona Gentlemen: Submitted herewith is our revised Geotechnical Investigation Report for the referenced project. This revision was prepared subsequent to receipt of review comments on our original submittal from the Flood Control District of Pima County (FCDPC). A review meeting was held on June 2, 1994, and the letter detailing review comments is dated May 13, 1994. Included in this report are results of the field investigation, laboratory analysis and engineering analyses, and recommended design criteria for the slopes of the aggregate pit quarry. One copy of the additional SEEP/W analysis is also included. Should you have any questions concerning this report, please do not hesitate to contact us. Respectfully submitted, SHB AGRA Inc. LIM Reviewed by r • S. Chg • \� YA, k 1 I► r4 il . . M k H MOM Copies: Addressee (3) ld/J94-1/6-10-94 "I' WN � AG RA Earth & Environmental Group TABLE OF CONTENTS Is B1 REPORT PAGE Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Project Description . . . . . . . . . . . . . . . . . . . . . . 1 Investigation . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Site Conditions & Geotechnical Profile . . . . . . . . . . . . . 3 Engineering Analysis . . . . . . . . . . . . . . . . . . . . . . 5 Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . 10 References . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 APPENDIX A Test Drilling Equipment and Procedures . . . . . . . . : . . A-1 Unified Soil Classification System . . . . . . . . . . . . . . . A-2 Terminology Used to Describe the Relative Density, Consistency or Firmness of Soils . . . . . . . . . . . . A-3 Site Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4 Logs of Test Borings . . . . . . . . . . . . . . . . . . . . . . A-5 APPENDIX B Tabulation of Test Results . . . . . . . . . . . . . . . . . . . B-1 APPENDIX C Figures 1 through 23 . . . . . . . . . . . . . . . . . . . . . . C-1 SHB Job No. E94-78 Revision No. 1 L^ A G R A Earth & Environmental _ Seepage & Slope Stability Analyses for Proposed Aggregate Pit Adjacent to Tangerine Road Landfill ' Pima County, Arizona SHB Job No. E94-18 Revision No. 1 1. INTRODUCTION Page 1 This report is submitted pursuant to a geotechnical investigation made by this firm of the site of the proposed aggregate pit, located about 1'/z miles west of Interstate 10 (I-10) along the north bank of the Santa Cruz River and south of Tangerine Road in Pima County, Arizona. The object of the investigation was to evaluate the physical properties of the subsoils underlying the site in order to develop recommendations for design of the slopes for the aggregate quarry. 2. PROJECT DESCRIPTION Preliminary details of the project plans were provided to us by Mr. Ken Kubacki of Granite Construction Company (Granite). A pre -proposal meeting was held at the Flood Control District of Pima County (FCDPC) office on February 22, 1994 to review the project plans. Based on the information presented in the meeting and discussions with Mr. Kubacki, it is our understanding that the quarry will encompass 300 to 400 acres and have a maximum excavation depth of 100 feet. It is also understood that soil -cement bank protection along the north bank of Santa Cruz River is currently being designed by FCDPC. The height of the bank protection will vary from 10 to 20 feet and will be sloped at 1:1 (horizontal to vertical). Fifty -foot and 140 -foot wide easements along the Tangerine Road Landfill property and the north bank of the Santa Cruz River, respectively, are being proposed by Granite. It was requested by Granite and FCDPC that slope stability and seepage analyses be performed for the excavation. L, A G R A Earth & Environmental Seepage & Slope Stability Analyses Page 2 �s for Proposed Aggregate Pit Adjacent to Tangerine Road Landfill Pima County, Arizona SHB Job No. E94-78 Revision No. 1 3. INVESTIGATION 3.1 Previous Geotechnical Investigation A total of 13 exploratory borings were drilled for the Tangerine Road Landfill project in 1981 (SHB Job No. E81-39). Three of these borings were advanced to a maximum depth of 380 feet. Two field permeability tests were performed at depths of 5 and 10 feet. Two laboratory permeability tests were performed on selected samples. Simplified logs for the 13 borings are shown in Figures 1 and 2 in Appendix C. The permeability test results are discussed in Section 4.1. 3.2 Subsurface Exploration Three exploratory borings were drilled to a depth of 100 feet below existing grade. The borings were drilled with a Becker hammer drill rig, utilized 10 -inch diameter casing advanced with a reverse circulation percussion hammer. Grab samples were retrieved from selected intervals in the borings. Three field permeability tests were performed within selected intervals in the borings. The field investigation was supervised by Aaron J. Glass, E.I.T., staff engineer of this firm. The results of the field investigation are presented in Appendix A, which includes a site plan showing the boring locations and logs of the test borings. L^ A G R A Earth & Environmental Seepage & Slope Stability Analyses Page 3 for Proposed Aggregate Pit Adjacent to Tangerine Road Landfill Pima County, Arizona SNB Job No. E94-78 Revision No. 1 3.3 Laboratory Analysis Moisture contents of selected recovered samples were determined. The results of these tests are shown on the boring logs in Appendix A. Grain -size analysis was performed on selected samples obtained from the borings. The results of these tests are presented in Appendix B. 4. SITE CONDITIONS & GEOTECHNICAL PROFILE 4.1 Site Conditions The site is located approximately 27/a miles southeast of the town of Marana, adjacent to the Tangerine Road Landfill in Pima County, Arizona. The Santa Cruz River, flowing from southeast to northwest, is located adjacent to and south of the project site. The Santa Cruz River has recently experienced overflow of its banks, resulting in incised washes which traverse the western portion of the site. According to USGS topographic maps, the central portion of the site has been used as an aggregate and construction material quarry since as early as 1967. Presently, the aggregate pits are infilled with soil and rock materials and coincide with existing grade. The inactive Tangerine Road Landfill to the north occupies approxi- mately 80 acres. The perimeter of the landfill consists of chain-link fencing and concrete block erosion protection. The concrete block bank protection is present on approximately the lower half of the landfill embankment. Three monitor wells were observed in the site vicinity and their approximate locations are shown on the site plan included in Appendix A. A G R A Earth & Environmental L fl Seepage & Slope Stability Analyses ' for Proposed Aggregate Pit ' - Adjacent to Tangerine Road Landfill Pima County, Arizona SHB Job No. E94-78 Revision No. 1 Page 4 Vegetative cover predominantly is typical native desert flora including mesquite, creosote and small brush. Recent river overflow has deposited various wood, vegetation and trash debris across the site. The local topography is generally flat with occasional rolling hills. ' 4.2 Geotechnical Profile Based on the subsurface information presented in Appendices A and C, ' the subsurface profile can be described as a three -layer system as follows: h s A. From the ground surface and extending to a depth of about 16 to 20 feet below grade, sandy silts and sandy clays predominate. These soils are slightly moist, weakly cemented, and moderately firm in their existing low moisture condition. B. Beneath Stratum A and extending to a depth of 35 to 45 feet, sand, gravel and cobble deposits with some clay lenses are present. These soils are typically slightly moist to moist and are uncemented. C. Clayey gravels and clayey sands with varying amounts of cobbles underlie Stratum B and extend to the full depth of the borings completed for this investigation. Based on simplified boring logs presented in Figure 1 of Appendix C, theses soils may extend to as deep as 400 feet. 4.3 Groundwater & Soil Moisture Conditions No free groundwater was encountered in the borings. Soil moisture contents are relatively low for Strata A and B, becoming moist within Stratum C. Based on conversations with Granite personnel, groundwater was measured at a depth of 275 feet in a monitor well located adjacent to the Tangerine Road Landfill. L, AGR A Earth & Environmental Seepage & Slope Stability Analyses fnforProposed Aggregate Pit -' Adjacent to Tangerine Road Landfill Pima County, Arizona SHB Job No. E94-78 Revision No. 1 5. ENGINEERING ANALYSES 5.1 Soil Properties Page 5 Unit weights and strength parameters utilized for the slope stability analyses were assumed based on the soil descriptions provided in the boring logs and our general experience with similar soils in the project area. The assumed parameters are shown in the table below: Friction Angle Cohesion (degrees) (Dsf) 32 200 40 50 38 100 Soil permeabilities are estimated based on the open-end test method recommended by the U.S. Bureau of Reclamation (USBR method E-18). Permeability (k) as function of cased borehole radius (r), head (h) and flow rate (q) is: k= q 5.5rh The field permeability test results from the present study and the 1981 SHB study are listed as follows: my AGRA Earth & Environmental Unit Weight Soil Total Saturated Stratum (acfl (I)Cf) A 115.0 127.4 B 125.0 137.4 C 125.0 137.4 Friction Angle Cohesion (degrees) (Dsf) 32 200 40 50 38 100 Soil permeabilities are estimated based on the open-end test method recommended by the U.S. Bureau of Reclamation (USBR method E-18). Permeability (k) as function of cased borehole radius (r), head (h) and flow rate (q) is: k= q 5.5rh The field permeability test results from the present study and the 1981 SHB study are listed as follows: my AGRA Earth & Environmental Seepage & Slope Stability Analyses is � for Proposed Aggregate Pit '� ei Adjacent to Tangerine Road Landfill Pima County, Arizona SHB Job No. E94-78 Revision No. 1 Boring Depth Flow rate Permeability Soil No.fs t) (gPm) (cm/sec) Stratum 1 50 0.66 3.9x10-° C 2 80 4.00 1.5x10"3 C 2 80 4.20 1.6x10"3 C 3 20 16.60 2.5x10"2 B 3 20 20.00 3.0x10'2 B P1* 10 --- 2.8x10-5 A P2" 5 --- 2.8x10"5 A 1*` 20 --- 2.5x10-5 C 1— 40 --- 1.1x10-` C Notes: * - from SHB Job No. E81-39, Field tests. ** - from SHB Job No. E81-39, Laboratory tests. 5.2 Slope Stability Analysis Page 6 Computer program STABL5, developed by Purdue University (Achilles, 1988; Kopperman and Carpenter, 1985)*, was utilized for determination of the stability of the aggregate pit slope. Typical cross sections representing the bench cuts for each stratum, general slopes without seepage forces for the pit adjacent to the landfill, and general slopes with seepage forces for the pit area along the Santa Cruz River were analyzed. Random circular shear surfaces were analyzed utilizing the Janbu method for the estimation of critical safety factors. Analysis results are summarized as follows: *References are listed at the end of this report. L^ A G R A Earth & Environmental I I I I I I Seepage & Slope Stability Analyses for Proposed Aggregate Pit Adjacent to Tangerine Road Landfill Pima County, Arizona SHB Job No. E94-78 Revision No. 1 Page 7 Details of the analysis results are presented in Figures 3 through 12 inclusive. The ten most critical shear surfaces from 100 random circular surfaces are shown in the figures. 5.3 Seepage Analyses 5.3.1 Program Description Computer program SEEP/W Version 2, developed by Geo -Slope Interna- tional Ltd. (1992) was utilized for the seepage analyses. SEEP/W is a two-dimensional finite element model which operates under Microsoft Windows 3.x with graphical user interface capability. The governing differential equation used in SEEP/W is: ax [k, axe + ay sky �LHay] +g at where: H = total head kx = hydraulic conductivity in x -direction k,, = hydraulic conductivity in y -direction Q = applied boundary flux L, A G R A Earth & Environmental Case Slope Maximum Safety No. (H:U Depth Factor Remarks ' 1 1:1 20 1.48 Single Lift, Stratum A 2 1:1 20 1.25 Single Lift, Stratum B 3 4 1:1 3/4:1 20 20 1.43 1.33 Single Single Lift, Stratum C Lift, Stratum A 5 3/4:1 20 1.14 Single Lift, Stratum B 6 3/4:1 20 1.39 Single Lift, Stratum C ' 7 1'/z:l 100 1.44 General Slope, No Water 8 1%s:1 100 1.18 General Slope, With Water 9 1%4:1 100 1.24 General Slope, No Water 10 1:1 100 1.02 General Slope, No Water Details of the analysis results are presented in Figures 3 through 12 inclusive. The ten most critical shear surfaces from 100 random circular surfaces are shown in the figures. 5.3 Seepage Analyses 5.3.1 Program Description Computer program SEEP/W Version 2, developed by Geo -Slope Interna- tional Ltd. (1992) was utilized for the seepage analyses. SEEP/W is a two-dimensional finite element model which operates under Microsoft Windows 3.x with graphical user interface capability. The governing differential equation used in SEEP/W is: ax [k, axe + ay sky �LHay] +g at where: H = total head kx = hydraulic conductivity in x -direction k,, = hydraulic conductivity in y -direction Q = applied boundary flux L, A G R A Earth & Environmental I I I I Seepage & Slope Stability Analyses Page 8 Is for Proposed Aggregate Pit ' B Adjacent to Tangerine Road Landfill Pima County, Arizona SHB Job No. E94-78 Revision No. 1 0 = volumetric water content t = time SEEP/W is developed on the basis that the volumetric water content (0) and hydraulic conductivities (kx and k,,) are functions of pore - water pressure. The flow of water through both saturated and unsatu- rated soils follows Darcy's Law. Darcy's Low was originally derived for saturated soil wherein the hydraulic conductivity is constant. For the unsaturated soil zones, the hydraulic conductivities vary with water content and pore -water pressure. For steady-state flow analysis, SEEP/W uses the initial estimated conductivity to compute the average pressure head for each element. This initial approximation is then used to adjust the new conduc- tivity based on the conductivity function. This procedure is repeated until both the head and conductivity differences for each node and element are smaller than a specified tolerance between two successive iterations. For transient flow analysis, the initial conductivity is estimated from the initial heads provided from the initial steady-state flow condition. SEEP/W generates two files, including finite element mesh information and a external graphic file, in the pre-process procedure. Five result files, including iteration convergence, element conductivity, element velocity and gradient, and nodal head and flux, are printed at the second stage of SEEP/W. These results are used for the post - process procedure to generate the graphical results. my AG RA EarM & Emironmenial Seepage & Slope Stability Analyses Page 9 �s for Proposed Aggregate Pit Adjacent to Tangerine Road Landfill Pima County, Arizona SHB Job No. E94-78 Revision No. 1 5.3.2 SEEP/W Analysis The typical cross section for the aggregate pit along the Santa Cruz River, assuming 100 feet of easement and a 1'/z:l (horizontal to vertical) pit slope, was selected for the seepage analyses for our original report. Additional analyses, assuming 250 feet of easement, were performed upon the request of FCDPC during the review meeting. The analyses are based on the following assumptions: o levation 200 feet is assumed for the crest elevation of the rotection bank. The bottom elevation of the Santa Cruz River is 180 feet, or 20 feet below the crest elevation of the bank. o �he maximum upstream water level is located 5 feet below the rest elevation of the bank protection, or elevation 195 feet. o teady-state seepage conditions were assumed, including Cases A, 1B and 1C representing the downstream water levels located t 100, 150 and 200 feet below existing grade, respectively. Cases 3A, 3B and 3C represent the same downstream water level or the 250 -foot easement. • For transient flow analysis, the downstream water level is located at 200 feet below the existing ground, or elevation 0 feet. The initial water level on the upstream side is located t elevation 20 feet. It was further assumed that the water level will raise to elevation 195 feet immediately after the Santa Cruz River is flooded and will remain at this level until the end of the analysis. The analysis only includes the 00 -foot easement alternative. o laturated permeability (k,) for the bank protection is 10-8 m/sec, while k, for Strata A, B and C are 10"5, 3x10"2 and 10-3 m/sec, respectively. X y ti he volumetric water content (8), which is defined as the orosity multiplied by degree of saturation, for soil -cement, trata A, B, and C is 0.12, 0.28, 0.40 and 0.40, respectively. he parameter 8 is utilized for transient flow analysis. L, A G R A Earth & Environmental Seepage & Slope Stability Analyses 's for Proposed Aggregate Pit ' Adjacent to Tangerine Road Landfill Pima County, Arizona SHB Job No. E94-78 Revision No. 1 Page 10 For the 100 -foot easement alternative, the finite element meshes for bothsteady-state and transient flow analyses are presented in Figure 13 and 14. Figures 13 includes nodal numbers and Figure 14 includes element numbers. Figures 15, 16 and 17 show the results of the steady-state flow analyses for Cases IA, 1B and 1C, respectively. The steady-state phreatic surfaces for each case is shown and the equipotential lines are plotted as contours. Based on the steady-state flow analyses, the maximum gradients of 0.65, 0.48 and 0.26 are estimated for Cases IA, 1B and 1C, respectively. Figure 18 shows the selected phreatic surfaces for various durations of p nding computed by the transient flow analyses. Based on the transient flow analyses, it will require between 2 and 3 months of ponding at elevation 195 feet on the Santa Cruz River to reach the steady-state phreatic surface. Since the maximum duration of flow for the 100 -year storm is only about 1 or 2 days, the steady-state phreatic surface will not fully develop. Figure 19 shows the finite element mesh for the typical section of the 250 -foot easement alternative. Steady-state analysis results are presented in Figures 20, 21 and 22 for Cases 3A, 3B and 3C, resp ctively. The maximum gradients of 0.54, 0.35 and 0.13 are esti ated for Cases 3A, 3B and 3C, respectively. 6. RECOMMENDATIONS Basedn the slope stability and seepage analyses presented in the previo s sections, it is concluded that a general aggregate pit slopes m, A G R A Earth & Environmental I I ' Seepage & Slope Stability Analyses Page 11 ' for Proposed Aggregate Pit ' BAdjacent tc Tangerine Road Landfill ' Pima County, Arizona SHB Job No. E94-78 Revision No. 1 I I 7 J of 1'/z 1 along the Santa Cruz River will provide adequate stability. A safety factor of 1.44 was computed for this case with unsaturated condit ons. Should a full phreatic surface develop between the pit and the bark protection, which is unlikely, the safety factor may approach 1.2. Considering that the steady-state condition will not likely develop, it is our opinion that the computed safety factor of 1.2 is indicaive of adequate stability being maintained for the temporary condit on of flow in the Santa Cruz River. As presented in Section 5.3, the maximum seepage flow gradients in the downstream toe area for Cases 1A, 1B and 1C are 0.65, 0.48 and 0.26, respectively. It should be noted that Cases 1A, lB and 1C represent groundwater levels at 100, 150 and 200 feet below existing grade, respectively, rather than the actual groundwater level of 275 feet. It is our opinion that a 100 -foot easement along the Santa Cruz River will provid adequate safety against piping. Widening the easement to 250 feet a recommended by FCDPC may be overly conservative. Figure and gei mended 1 andfi' slopes being genera' 23 shows a typical cross section of the recommended bench slopes feral 1 Y2:1 slope for the proposed aggregate pit. The recom- easements along the Santa Cruz River and adjacent to the 1 are 150 and 50 feet, respectively. Minor sloughing on the should be anticipated, especially when the materials dry after exposed. Thus, it is strongly recommended that the 1'h :1 slope be maintained for the entire quarry area. L^ A G R A Earth & Environmental Seepage & Slope Stability Analyses �s for Proposed Aggregate Pit Adjacent to Tangerine Road Landfill Pima County, Arizona SHB Job No. E94-78 Revision No. 1 REFERENCES Page 12 Achil1eos, E., 1988, User Guide for PCSTABLSM, Purdue University and Indiana De artment of Highways, Joint Highway Research Project, Report JHRP-88/19, December. GEO-SLOPE International, Ltd., 1992, User's Guide for SEEP/W Version 2, A Finite Ele ent Program for Seepage Analysis, Calgary Alberta, Canada. Kopperman, S. and Carpenter, J.R., 1985, PCSTABL4 User Manual, Report No. FHWA-TS-85-229, U.S. Department of Transportation, Federal Highway Administration, Washington, D.C., October. U.S. Army Corps of Engineers, 1978, Design and Construction of Levees, Engineering Manual EM 1110-2-1913, March. AGRA Earth & Environmental 1� 6 TEST DRILLING EQUIPMENT & PROCEDURES Auger Borinq Drilling through overburden soils is performed with 6 5/8" O.D., 3 1/d" I.D. hollow stem auger or 4 1/2" solid stem continuous flight auger. C rbide insert teeth are normally used on bits so they can penetrate oft rock or very strongly cemented soils. A CME -55 or CME -75 truck -mounted drill rig is used to advance the auger. The drill rigs are powered with six -cylinder Ford industrial engines capable of delivering about 7,00 to 8,400 foot-pounds torque to the drill spindle. The spindle is advanced with twin hydraulic rams capable of exerting 16,000 to 20,000 pounds dow ward force. Generally, refusal to penetration of the auger is adopted as top of the SGC or river -run material, which normally requires other techniques for penetration. Grab samples or auger cuttings may be taken as necessary. Standard penetration tests or 2.42" diameter ring samples are taken in conjunctio with the auger borings as needed, with the sampling interval and type b ing indicated on the boring logs. Hammer Drill Drilling with the Hammer drill is accomplished with a Drill Systems A 1000 drill rig advancing a double -walled drive casing with a link -belt 180 diesel pile driving hammer, having a rated energy of 8,100 foot-pounds per blow. Where noted on the boring log, the hammer is equipped with a supercharger which can boost the energy to approximately 12,000 foot-pounds per blow. The supercharger is used only in portions of the borinc where blow counts are relatively high. Cuttings are removed with compressed air by a reverse circulation process, and are collected in a cyclone from which grab samples are obtained. The drive casing is either 9" O.D. by 6" I.D. or 6 5/8" O.D. by 4" I.D. and employs an expendable bit of slightly larger diameter than the O.D. of the casing. Hammer blows required to advance the drive casing are recorded in 1' increments, as noted on he boring logs. Standard penetration tests or 2.42" diameter ring samples taken are noted on the boring logs. Odex S st m The Odex (overburden drilling with the eccentric method) system, also referred to as the DTH (down -the -hole hammer) system, consists of a pneumatic -rotary percussion down -the -hole hammer operating at the bottom being drilled through a 5" diameter steel casing. The eccentric button percussion bit overreams the boreholes and allows advancement of the casing. The same compressed air or air -detergent (foam) mixture that operates the hammer also serves to expel the cuttings from the borehole, where they can be collected as grab samples. Retraction of the eccentric drill bit allows removal of the hammer from the center of the casing to facilitate standard penetration testing (ASTM D1586) where noted on the boring logs. A-1 &N A G R A Earth & Environmental Group & I n 11 li rotary rig capacity o diameter T Cutting rei collected the cuttir borehole, simultaneo recorded c 2.42" diam taken are TEST DRILLING EQUIPMENT & PROCEDURES (CONT.) :a rill The Schramm T64H truck -mounted drill rig is a top drive capable of up to 85,500 inches/pounds of torque with a pulldown 35,000 lbs. Drilling is performed with either 4", or larger, ricone roller bits or 4" to 6" diameter down -the -hole hammer. ioval is facilitated by compressed air or air/water mixtures and in a cyclone. Where noted on the boring logs, grab samples of gs were collected. When casing is required to stabilize the in Aardvark drill through casing hammer is utilized, permitting is drilling and driving of the casing. Casing penetration is n the boring logs in feet per minute. Standard penetration, !ter ring samples, Shelby tubes, pitcher tube or Denison samples Toted on the boring logs. Sampling Procedures Dynamically driven tube samples are usually obtained at selected intervals in the borings by the ASTM D1586 test procedure. In many cases, 2" O.D., 1 3/8" I.D. samplers are used to obtain the standard penetration resistance. "Undisturbed" samples of firmer soils are often obtained ith 3" O.D. samplers lined with 2.42" I.D. brass rings. The driving energy is generally recorded as the number of blows of a 140 -pound, 30 -inch free fall drop hammer required to advance the samplers in 6 -inch increments. However, in stratified soils, driving resistance is sometimes recorded in 2- or 3 -inch increments so that soil changes and the presence of scattered gravel or cemented layers can be readily detected and the realistic penetration values obtained for consideration in design. These values ar expressed in blows per 6 inches on the boring logs. "Undis- turbed" sampling of softer soils is sometimes performed with thin walled Shelby tubes (ASTM D1587), pitcher samplers, Denison samplers or continuous CME samplers. Where samples of rock are required, they are obtained by NQ diamond core drilling (ASTM D2113). Tube samples are labeled and placed in watertight containers to maintain field moisture contents for testing. When necessary for testing, larger bulk samples are taken from auger cuttings. Also, representative samples are obtained from the cuttings from the hammer and Schramm drill rig. Boring Records Drilling operations are directed by our field engineer or geologist who examines soil recovery and prepares the boring logs. Soils are visually classified in accordance with the Unified Soil Classification System (ASTM D2487), with appropriate group symbols being shown on the boring logs. djM 1.97!07.149: A-2 L, A G R A Earth & Environmental Group 11 UNIFIED SOIL CLASSIFICATION SYSTEM Soils are visually classified by the Unified Soil Classificaison system on the boring logs presented in this report. Grain -size analysis and Atterberg Limits Tests are often performed on selected samples to aid in classification. The classification system is briefly outlined on this chart. For a more detailed description of the system, see "The Unified Soil Classification System" Corp of Engineers, US Army Technical Memorandum No. 3-357 (Revised April 1960) or ASTM Desi nation: D2487-667. MAJOR DIVISIONS YMBO GROUP SYMBOL SYMBOL TYPICAL NAMES o > Q� d: Gw Well graded gravels, gravel -sand mixtures. o e :.o: or sand -gravel -cobble mixtures. « A a CLEAN GRAVELS .. p.;p'; • ix- Poorly graded gravels, gravel -sand mix- e�' Less than 5% passes No. 200 sieve) v, _ CZ °Z . �� GP tures, or sand -gravel -cobble mixtures. a > M „ RAVELS WITH Limits plot below "A" line 6 hatched zone / GM Silty gravels, gravel -sand -silt mixtures. c o„ a — w N C4 X c FINES on plasticity chart c (More than 12% Limits plot above W Z m passes No. 200 sieve) "A" line & hatched zone GC Clayey gravels, gravel -send -clay mixtures. Z '^ o — on plasticity chart Q 'Ao 0 0 G N > Sw Well graded sands, gravelly sands. CLEAN SANDS • • in ue (Less than 5% passes No. 200 seiveI 0 W c o • • • •� SP Poorly graded sands, gravelly servos. OXZ ••• w Z O N `n o Q n Limits plot below ° e ° J H ¢ n ANDS WITH "A" Zine &hatched zone ° ° o SM Silty sands, sand -silt mixtures. _ G FINES on plasticity Chart ° ° • o E u (More than 12% passes o. 200 sieve) Limits plot above "A" line & hatched zone o° ° o° o ° o° o SC I Clayey sands, sand -clay mixtures. A _ on plasticity chart ° o °° ° ism SILTS OF LOW PLASTICITY I I Inorganic silts, clayey silts with slight fie=f (Liquid Limit Less Than 50) ( I I ML plasticity. I ur �': SILT S OF HIGH PLASTICITY Inorganic silts, micaceous or diwoma - Iceous Go �: -��7 I MH silty soils, elastic silts. p 2 le (Liquid Limit More Than 50) ) QQ Eg m Inorganic clays of low to mediupies- ¢ t5 EeS CLAYS OF LOW PLASTICITY CL 1ticity. gravelly clays, sandy clays. silty v d (Liquid Limit Less Than 50) clays, lean clays. La Z C OQ'-� in LL CLAYS OF HIGH PLASTICITY Inorganic clays of high plasticity, fat ¢� (Liquid Limit More Than 50► 0 CH• clays, sandy clays of high plasticity. I NOTE: Coarse grained soils with between 5% & 12% passing the No. 200 sieve and fine grained soils with limits plotting in the hatched zone on the plasticity chart to have double symbol. PLASTICITY CHART DEFINITIONS OF SOIL FRACTIONS 60 SOIL COMPONENT PARTICLE SIZE RANGE 50 Z I ICH ( Cobbles Above 3 in. 40 Gravel 3 in. to No. 4 sieve > I A LINE Coarse gravel 3 in. to 3A in. U30 Fine gravel % in, to No. 4 sieve CL �= Sand No. 4 to No. 200 < 20 MH Coarse No. 4 to No. 10 Medium No. 10 to No. 40 CL -ML— Fine No. 40 to No. 200 10 1 Fines (silt or clay) Below No. 200 sieve 7 ���� ML 01_ 0 10 20 30 40 50 60 70 80 90 100 LIOUID LIMIT - Is71_SHB AGRA, INC. A-3 t ' B I Engineering & Environmental Services TERMINOLOGY USED TO DESCRIBE THE RELATIVE DENSITY_, CONSISTENCY OR FIRMNESS OF SOILS The terminology used on the boring logs to describe the relative density, consistency or firmness of soils relative to the standard penetration resistance is presented below. The standard penetration resistance (N) in blows per foot is obtained by the ASTM D1586 procedure using 2" O.D., 1 3/8" I.D. samplers. 1. Relative Density. Terms for description of relative density of cohesionless, uncemented sands and sand -gravel mixtures. N Relative Densit 0-4 Very loose 5-10 Loose 11-30 Medium dense 31-50 Dense 50+ Very dense 2. Rela6 ve Consistency. Terms for description of clays which are saturated or near saturation. N 0-2 3-4 5-8 9-15 16-30 30+ Relative Consistency Very soft Soft Medium stiff Stiff Very stiff Hard Remarks Easily penetrated several inches with fist. Easily penetrated several inches with thumb. Can be penetrated several inches with thumb with moderate effort. Readily indented with thumb, but penetrated only with great effort. Readily indented with thumbnail. Indented only with difficulty by thumbnail. 3. Relat ve Firmness. Terms for description of partially saturated and/or cemented soils which commonly occur in the Southwest including clays, cemented granular materials, silts and silty and clayey granular soils. N Relative Firmness 0-4 Very soft 5-8 Soft 9-15 Moderately firm 16-30 Firm 31-50 Very firm 50+ Hard A-4 L^ A G R A Earth & Environmental Group TANGERINE ROAD TO 1-10 — TANGERINE ROAD LANDFILL ID �3 0 is �.S4/V A LEGEND —x FENCE G GAS LINE _____- DIRT ROAD MONITOR 5 BORING LC /I/ A/ n\\ NORTH RIVER 0 1000 2000 SCALE I"= 1000' (APPROX.) SITE PLAN SHO ING BORING LOCATIONS II LI it it I I I I II CACTIVE u AGRICULTURE II I I n I I I I I I I I II Ii �� II SHB JOB No. E94-78 i Bi A-5 94-7 J DATE O OL } W 0 C W%- a _ 'WW3 T C A - H 3 U CL --A ou OOWL CO - WW r-L)d0 AWL) L a D- D. 3 M 0 E E O L O M10 0J N A Im a J A - Drill Cuttings O OL 0 L O W 0 C W%- L4-4-- � '► SALT LAKE CITY -LAKEWOOD/DENVER 'WW3 0 U M - +-U TN13 CL --A L.03 OOWL CO - 0— U r-L)d0 AWL) Pape 1 of 2 LOG OF TEST BORING NO. 1 RIG TYPE Becker Hammer BORING TYPE 10" Caslne with Puumatic Hammer SURFACE ELEV. DATUM REMARKS VISUAL CLASSIFICATION slightly SANDY SILT, considerable clay, moist trace of fine grained gravel, fine grained sand, moderately lime cemented, low plasticity, light brown note: hammer begins at 11' note: increase in medium grained sand & subrounded gravel at 15' GRAVELLY SAND, some silt, slightly predominantly fine grained moist subrounded gravel, medium to coarse grained sand, no lime, nonplastic, light brown note: increase in cobbles at 24' SAND, GRAVEL dt COBBLES, slightly trace to some silt, medium grained sand, coarse grained subrounded moist gravel, nonplastic, brown note: rock constituents predominantly diorite intrusives note: sand lens from 24' to 25' CLAYEY GRAVEL & CLAYEY slightly SAND, considerable medium grained moist sand, some subrounded cobbles, coarse grained subrounded gravel, no lime, medium plasticity, orangish brown note: orangish brown, high plasticity SAMPLE TYPE J A - Drill Cuttings SHB AGRA, INC. A-6 S - 2" O.D. 1.38" I.D. tube sample. U - 3" O.D. 2.42" I.D. tube sample. _ B ENGINEERING L ENVIRONMENTAL SERVICES T 3" O.D. thin-walled Shelby tube. EROUE t RENO/SPARKS-EL PASO - MEXICO SALT LAKE CITY -LAKEWOOD/DENVER Pape 2 of 2 PROJECT Granite A re ate pit _ LOG OF TEST BORING NO. 1 Characterization JOB NO. -7 DATE 3-30-94 r w T RIG TYPE Becker Hammer T c - o of i BORING TYPE 10" Casin¢ with Pnumatic Hammer •� u ~ O C 0 4- L+ -+-M SURFACE ELEV. u_ -- _W d U W 0. 3 C C*; W '- DATUM O 70 tU3 a IL 3 44.-0— IL r -0 ab M�oT oicoO� o bb° o W cco; to REMARKS VISUAL CLASSIFICATION fAO-U. U UO_O :)(n U 50 CLAYEY GRAVEL & CLAYEY SAND, continued note: some gravel up to 4" in 55 2.8diameter note: moist, orange clayey sand lens from 57' to 69' 60 note: decrease in clay at 70' SC note: clayey sand lens from 83' to 84' 65 2.7 note: interbedded lenses of sand & gravel with varying clay content at 80' :.�:. A 7 note: clayey sand lens from 70 96' to 97' 75 80 85 .q 95 7 Stopped Drill at 100' 100 GROUNDWATER SAMPLE TYPE J DEPTH HOUR DATE A - Drill Cuttings SHB AGRA, INC. A-7 $Z S - 2" O.D. 1.38" I.D. tube sample. none U - 3" O.D. 2.42" I.D. tube sample. B ENGINEERING L ENVIRONMENTAL SERVICES 1 T - P O.D. thin -welled Shelby tube. PHOENIX • TUCSON- ALS" MEXIC E T RENO/SPARKS -EL PASO • MEXICO ERQSALT LAKE CITY -LAKEWOOD/DENVER Pave I of 2 PROJECT Granite A re ate Pit Characterization LOG OF TEST BORING NO. 2 JOB NO. -7DATE 3-30-94 VM T RIG TYPE Becker Hammer � C } o of i BORING TYPE 10" Casing with Pnumatic Hammer t IUV 1—9 C y w �.-+. 0 M 4- SURFACE ELEV. LL d U w d Z C C d W— C DATUM L — \ t — O U wW=z NO 00 C 0010 L A � o ro ° �.0 Z O O W L C o b o REMARKS VISUAL CLASSIFICATION 0-4. o D: S 0 J cn m 0— U Sudo SNC) U 0 slightly SAND, trace of fine graiend moist subangular to subrounded gravel, trace to some silt, fine to medium grained, poorly graded, nonplastic, 5 �" light brown ;�..SP note: occasional coarse grained gravel & small cobble lenses from 13' to 16' 10 0.9 15 SANDY GRAVEL, trace of silt & A2 slightly clay, fine to medium grained sand, P moist subrounded gravel, nonplastic, 20 i� brown ii note: decrease in sand & increase in cobbles below 22' SAND, GRAVEL & COBBLES, 25 trace of silt, predominantly medium i slightly grained sand, subrounded gravel & moist cobbles, nonplastic, brown ii 30 f note: orange, poorly graded medium i P grained sand lens from 32' to 336" ii i ii i ii 35 i ii ii i ii i ii i is 40 ii i CLAYEY SAND & CLAYEY slightly GRAVEL, trace of silt, trace to 45 moist to some cobbles, predominantly moist medium grained subangular sand, GC fine to medium grained gravel, medium plasticity, orangish brown 50 GROUNDWATER SAMPLE TYPE DEPTH HOUR DATE A - Drill Cuttings S SHB AGRA, INC. A-8 Q none S - 2" O.D. 1.38M I.D. tube sample. i� g ENGINEERING aG ENVIRONMENTAL SERVICES U 3 O.D. 2.42 I.D. tube sample. = PHOENIX- TUCSON- ALBUQUERQUE T 3" O.D. thin-walled Shelby tube. 1 RENO/SPARKS -EL PASO . MEXICO SALT LAKE CITY • LAKEWOOD/DENVER PROJECT JOB NO._ 55 60 65 70 do] 95 —DATE 71 C b H Z N L O U C W 4- LL W0. — L �—d E O a N m CLL 00: 0J 50 i , 55 60 65 70 do] 95 —DATE 71 C O H Z N L O O C W 4- d U W0. E O T W M N m 0- U w4 - OL I Q Ct = ON U 'a L ---- A 01 L C OZ; 0.050 Paye 2 of 2 LOG OF TEST BORING NO. 2 RIG TYPE Becker Hammer BORING TYPE 10" Casing with Pnumatic Hammer SURFACE ELEV. DATUM REMARKS VISUAL CLASSIFICATION moist CLAYEY SAND & CLAYEY GRAVEL, continued note: clayey sand & gravel interbedded in lenses P to 3' thick below 54' note: clayey sand lens from 54' to 56' note: hard layer at 65' note: thin yellow clay lens at 67', possible weathering product note: fine grained sandy clay lens from 69' to 70', grades to clayey sand at 71' note: gravel & cobble are predominantly quartzite note: clayey sand, coarse graiend from 76' to 78', fine grained gravel with clay matrix at 79' note: clayey sand lens, medium coarse grained from 87' to 90', trace of coarse grained gravel, clayey sand, medium grained with occasional coarse grained gravel & cobble lens from 90' to 100' Stopped Drill at 100' 100 GROUNDWATER SAMPLE TYPE 'rrrr DEPTH HOUR DATE A - Drill Cuttings _ SHB AGRA, INC. A-9 none S 2" O.D. 1.38" I.D. tube sample. g ENGINEERING i ENVIRONMENTAL SERVICES 1 U - 3 O.D. 2.42 I.D. tube sample. PHOENIX - TUCSON - AL8LXUEROUE T - 3" O.D. thin -waited Shetby tube. j RENO/SPARKS -EL PASO MEXICO SALT LAKE CITY • LAKEWOOD/DENVER PROJECT Gran ar; JOB NO. - Pape 1 of 2 to A re ate Pit icterization LOG OF TEST BORING NO. 3 DATE 3-31-94 d a T RIG TYPE Becker Hammer C t `0 of i BORING TYPE 10" Casing with Pnumatic Hammer ~ 0 C 04- L++ -T.0 ► SURFACE ELEV. W U Oat)_ 0 CO 0 DATUM 1Nt U O ° �n 0�o REMARKS VISUAL CLASSIFICATION Z 0L 4' O_ AU UD to to D -U EU t aIL, c V -U. - L 4 O tr E V t L o 0 J !V Oro to 0 DEPTH HOUR jZ 1 = slightly moist SAND, trace to some silt, trace of gravel, predominantly medium grained, nonplastic, brown PHOENIX • TUCSON • ALBUQUERQUE RENO/SPARKS -EL PASO - MEXICO SALT LAKE CITY -LAKEWOOD/DENVER 0.35 10 15 20 25 30 slightly moist slightly moist SANDY SELT, trace to some clay, some coarse grained gravel, predominantly fine to medium grained sand, nonplastic to low plasticity, light brown .� �+ML '" GRAVELLY SAMD, trace of silt & clay, predominantly fine to medium grained sand, subangular to subrounded gravel, nonplastic, brown note: coarse grained gravel & cobbles from 24' to 25' P 4 35 40 '! �/ SAND, GRAVEL & COBBLES, trace of silt, predominantly medium grained sand, subrounded gravel & cobbles, nonplastic, brown note: fine to medium grained sand lenses interbedded from 36' to 39' note: sandy gravel lens, fine grained, subrounded from 39' to 40', increase in sand from 40' to 44' 0.7 QP 45 0.7 .:r`X CLAYEY SAND & CLAYEY GRAVEL SC / 50 GROUNDWAT R DATE SAMPLE TYPE A - Drill Cuttings S - 2" O.D. 1.38" I.D. tube sample.none U - 3" O.D. 2.42" I.D. tube sample. I _os SHB AGRA, INC.A-10 ENGINEERING i ENVIRONMENTAL SERVICES DEPTH HOUR jZ 1 = T - 3" O.D. thin-walled Shelby tube. f PHOENIX • TUCSON • ALBUQUERQUE RENO/SPARKS -EL PASO - MEXICO SALT LAKE CITY -LAKEWOOD/DENVER I I Page 2 of 2 PROJECT Granite Aegreeate Pit LOG OF TEST BORING NO. 3 Characterization JOB NO. -7 DATE 3-31-94 ' — d N T RIG TYPE Becker Hammer C c ° C i BORING TYPE 10" Casing with Pnumatic Hammer OP L +- U O C Oi M- L}t— M �► C SURFACE ELEV. L — LLa \ t d U O a U +- W W F °' N O DATUM a a 9 — N} uto E �— N oai C o°i c. A o b ° cT.� O o d � c O A b REMARKS VISUAL CLASSIFICATION O—Li 0W i= 0J CA m O—U 1LULC3:NUU 50 slightly CLAYEY SAND &CLAYEY moist GRAVEL, trace of silt, trace to ' some cobbles, predominantly medium grained sand, subrounded 55 gravel, medium plasticity, orangish '- brown note: clayey sand, fine to medium grained, trace to some fine grained 60 gravel from 53' to 58' QC note: clayey sand & clayey gravel interbedded below 53' ' 1 note: hard cobble layer at 62' 65: note: clayey sand layer from 79' to ' 81', medium grained, some gravel '. . 70 '# 75 fes' 80 CLAYEY SAND & GRAVEL, trace slightly of silt, trace of cobbles, moist predominantly medium grained, subangular to subrounded gravel, medium plasticity, orangish brown 85 0.5 ': note: coarse grained gravel & cobble Sc lens from 90' to 93' f ' note: fine grained sand lens, some 90 clay, some gravel from 99' to 100' '4 95:. Stopped Drill at 100 ' 100 GROUNDWATER SAMPLE TYPE I DEPTH HOUR I DATE A - Drill Cuttings SSHB AGRA, INC. A-11 QS S - 2M O.D. 1.38" I.D. tube sample. gB ENGINEERING L ENVIRONMENTAL SERVICES It 1 U 3O.D. 2.42 I.D. tube Sample. PHOENIX • TUCSON • ALBUOUEROUE — T 3" O.D. thin-walled Shelby tube. RENO/SPARKS -EL PASO . MEXICO SALT LAKE CITY • LAKEWOOD/DENVER SERGENT, HAUSKINS & BECKWITH TABULATION OF TEST RESULTS Job No. E94-78 W/0 1 HOLE UNIFIED SIEVE ANALYSIS-ACCUM % PASSING LAB NO NO DEPTH CLASS L.L. P.I. #200 #100 #50 #40 #30 #16 #10 #8 #4 .25" .37511.5" .751, 10, 1.511 21, 2.51, 30, 3.511 411 611 801 1011 1211 1 71-101 NA NV 50 69 86 92 96 99 99 100 4-78-1 2 17'-20' NA NV 4.4 7 15 19 23 32 41 43 53 60 67 71 80 84 90 96 100 4-78-7 2 551-59' NA NV 9.9 12 17 19 22 29 36 37 42 43 52 58 67 75 81 90 100 4-78-8 L^ AG R A B-1 Earth & Environmental Group 425 375 325 275 225 175 125 75 Filzure 1 - TANGERINE LANDFILL BORING LOGS B-1 TO B-3 (SHB E81-39) B-3 B-1 B-2 SM -SP SM ML -SM SP -GW SP GW -GC SW -SC SW -SC SC GC SW -SC SC GP SP Sw GF - SC -GC SC SP SM SC -SM SM Sw—SM Sw SM SP Sw-SC SP -SC SM qP SC SW -SM SC GW SC SP -SM Sw-SC I q —l— is LSHB AGRA, INC. 1B! Engineering & Environmental Services -t^ Project Job No. 9 % Computed by: SSG Ckd. by: Date -11 -f (I Page of C-1 -4- s i_ SHB AGRA, INC. ~I B l Engineering & Environmental Services - t— Project aAj-,rA gYcr�.�C PST Job No. /(I'Jf3 Computed by: <,$L Ckd. by: Date (1-1). -qu Page of C-2 Figure 2 -TANGERINE LANDFILL BORING LOGS B-5 TO B-10 (SHB E81-39) 405 B-5 B-6 B-9 B-10 400 5 Sw 3 15 15 Sw-SM 395 5 SP -SM 36 22 16 CL 390 22 ML 14 15 39 SM CH 24 13 385 32 9 35 12 SM -SP SP I 380 62 24 100 SP 68 375 50/3- 370- -4- s i_ SHB AGRA, INC. ~I B l Engineering & Environmental Services - t— Project aAj-,rA gYcr�.�C PST Job No. /(I'Jf3 Computed by: <,$L Ckd. by: Date (1-1). -qu Page of C-2 J 0 0 0 0 0 0 O m M 0 C-3 f f/ U� f� V: II II V W E� v T m Uj 1 a rn I I n CQ a pq EE -y E--4 o z a � o 0 W P-4 O � O a a a W � U „ a .. 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