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Home My WebLink AboutPacket Additional Info 01-28-05 1- Additional Information for Application for Board of Zoning Appeals Action Special Use Approval Request Mueller Property North Sand and Gravel Operation Prepared For: City of Carmel- Clay Township Hamilton County One Civic Square Carmel, Indiana 46032 Prepared By: 1980 E. 116th Street, Suite 200 Carmel, Indiana 46032 ~-_._- Martin Marietta Materials, Inc. // '/ --,~\ j <~t\>;\\; -' -, I " _ ,~',r\~J (,0 ( t\ i' ~,j,", ~. .:. .. ~ - \ \ January 28,2005 -- I u u u PLANS AND DETAILS CONSTRUCTION PLAN SOUND LEVEL ASSESSMENT TABLE OF CONTENTS ~ '!L.~ . ._-,--~/~ <"'/ " .('\) \,/~\ AC\\\\..' \/\ '1'\-\..;\'''\ \ . ,,\\.- '. ':. /' /.' t'.- 'f ~!I-: ~~A . \)\J~S ,J v<~\ /,_....' I <, '. ''- ,:;;/>,., /, " ~ / " -,.... '> "'I\J:J-rT:0'\ \- ",~~y: Plans and Details .!!2 Om - Q) o "0 c ro l/l c ro a: Construction Plan c: o :;::; u c: 2m -- lIlQ.. c: o () Construction Plan for Mueller Property North Sand and Gravel Operation to Comply With 3271AC 15-5-6.5 Prepared For: Prepared By: Martin Marietta Materials, 'nc.M 1980 E. 116th Street, Suite 200 Carmel, Indiana 46032 January 28, 2005 ~' ,~ v ~<S> .('~ "J ~<..'v ~~~\ '~v "': ,_ ", I \:r~" ~s ~\:S I- ,. f--: /::'1 V o u u TABLE OF CONTENTS PAGE INTRODUCTION .................;..................................... i 327 lAC 15-5-6.5 (a)(1) PROJECT NARRATIVE AND SUPPORTING DOCUMENTS.............. 1-1 327 lAC 15-5-6.5 (a)(2) VICINITY MAP ................................................. 2-1 327 lAC 15-5-6.5 (a)(3) EXISTING PROJECT SITE LAYOUT.. . ....... ..... ...... .. . .. ... ... 3-1 327 lAC 15-5-6.5 (a)(4) FINAL PROJECT SITE LAYOUT ................................... 4-1 327 lAC 15-5-6.5 (a)(5) GRADING PLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-1 327 lAC 15-5-6.5 (a)(6) DRAINAGE PLAN...... ......... ............................. ... 6-1 MUELLER PROPERTY NORTH SAND AND GRAVEL EROSION AND SEDIMENT CONTROL REPORT ...................... 6-4 327 lAC 15-5:.6.5 (a)(7) STORM WATER POLLUTION PREVENTION PLAN .................... 7-1 SPILL PREVENTION, CONTROL, AND COUNTERMEASURE PLAN....... 7-9 327 lAC 15-5-6.5 (a)(8) POSTCONSTRUCTION STORM WATER POLLUTION PREVENTION PLAN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 u u v INTRODUCTION This Construction Plan and associated documents have been prepared in order for Martin Marietta's erosion and sediment control plan for the proposed Mueller Property North Sand and Gravel Operation to meet the requirements of 327 lAC 15-5-6.5 (Rule 5), Storm Water Run-off Associated with Construction Activity. The following document and enclosures address the requirements for construction plans as outlined in 327 lAC 15-5-6.5 (a). This document is divided into eight sections consistent with the format of Sec. 6.5 (a) (1) through (8). At the beginning of each section is the listing of the requirements for construction plans for that section, along with Martin Marietta's response or reference (in bold type) to an enclosure provided with this document. - i - 327 lAC 15-5-6.5 (a)(1) PROJECT NARRATIVE AND SUPPORTING DOCUMENTS ~ ...... ~ - ...... ro - It) <.ci I It) I It) ~ u <( ..... C'\I ('I') u u u (1) Pro~ect narrative and supporting documents, including the following information: (A) An index indicating the location, in the construction plans, of all information required by this subsection. A Table of Contents of all information required by this subsection is located at the front of this Construction Plan. (B) Description of the nature and purpose of the project. See page 1-2. (C) Legal description of the project site. The description should be to the nearest quarter section, township, and range, and include the civil township. See page 1-3. (D) Soil properties, characteristics, limitations, and hazards associated with the project site and the measures that will be integrated into the project to overcome or minimize adverse soil conditions. See page 1-4. (E) General construction sequence of how the project site will be built, including phases of construction. See page 1-5. (F) Hydrologic Unit Code (14 Digit) available from the United States Geological Survey (USGS). See page 1-6. (G) A reduced plat or project site map showing the lot numbers, lot boundaries, and road layout and names. The reduced map must be legible and submitted on a sheet or sheets no larger than eleven (11 ) inches by seventeen (17) inches for all phases or sections of the project site. See page 1-7. (H) Identification of any other state or federal water quality permits that are required for construction activities associated with the owner's project site. See page 1-8. 1-1 u u u Description of the Nature and Purpose of the Project Martin Marietta Materials, Inc. (hereinafter referred to as Martin Marietta) has requested a Special Use Approval from the Carmel-Clay Board of Zoning Appeals for surface sand and gravel extraction resulting in the creation of an artificial lake on a 105.981-acre tract north of 106th Street between Gray Road and Hazel Dell Parkway in the City of Carmel, Hamilton County, Indiana. The property for which Special Use is being sought is referred to in this report as, "Mueller Property North." Martin Marietta is seeking approval to conduct a surface sand and gravel operation on the Mueller Property North utilizing typical earthmoving equipment (including pans, front-end loaders, etc.) to remove overburden and a floating dredge to remove sand and gravel. Booster pumps will help to convey the sand and gravel through a pipe to the Carmel Sand Plant located north of the subject property. Therefore, traffic impacts will be nonexistent. 1-2 u u u Legal Description Part of the South Half of Section 4, Township 17 North, Range 4 East of the Second Principal Meridian in Clay Township, Hamilton County, Indiana, described as follows: Beginning at the Southwest corner of Section 4, Township 17 North, Range 4 East of the Second Principal Meridian in Clay Township, Hamilton County, Indiana; thence South 89 degrees 55 minutes 56 seconds East (assumed bearing) on the South line of said Section 4, a distance of 3,302.24 feet to the Westerly line of real estate conveyed to the City of Carmel, Indiana, by a document titled "Certification of Clerk" recorded in the Office of the Recorder of Hamilton County, Indiana, as Instrument Number 9709754848; (the following seven courses being on the Westerly line of said real estate) 1.) thence North 00 degrees 04 minutes 04 seconds East 16.50 feet; 2.) thence North 60 degrees 23 minutes 05 seconds East 57.55 feet; 3.) thence North 89 degrees 50 minutes 43 seconds East 254.47 feet; 4.) thence South 81 degrees 22 minutes 39 seconds East 198.24 feet; 5.) thence North 25 degrees 45 minutes 13 seconds East 826.18 feet; 6.) thence North 21 degrees 15 minutes 23 seconds East 576.29 feet; 7.) thence North 07 degrees 37 minutes 09 seconds East 180.00 feet to a point on a line that is parallel with the South line of said Section 4, and extends Easterly from a point on the East line of the Southwest Quarter of said Section 4 that is 154.10 feet North of the Southeast corner of the North Half of said Southwest Quarter; thence North 89 degrees 55 minutes 56 seconds West on said line 1,718.86 feet to the aforesaid point on the East line of said Southwest Quarter, being also the East line of KINGSWOOD SUBDIVISION, SECTION THREE, a subdivision in Hamilton County, Indiana, the Secondary Plat of which, as amended December 22, 1988, is recorded in said Recorder's Office as Instrument Number 8900204 on pages 111 and 112 of Plat Book 16; thence South 00 degrees 07 minutes 43 seconds West on the East line of said Southwest Quarter 154.10 feet to the Southeast corner of the North Half of said Southwest Quarter; thence North 89 degrees 51 minutes'18 seconds West on the South line of the North Half of said Southwest Quarter 1,521.03 feet to the Northeast corner of real estate conveyed to the City of Carmel, Indiana, per a Deed recorded in the Office of the Recorder of Hamilton County, Indiana, on page 865 of Deed Record 329, said corner being 1,146.65 feet East of the Northwest corner of the South Half of said Southwest Quarter; thence South 00 degrees 27 minutes 42 seconds West on the East line of said real estate 918.75 feet, per the aforesaid deed, (919.89 feet by measurement) to the Southeast corner of said real estate, said corner lying on a line that extends South 89 degrees 51 minutes 29 seconds East, measured parallel with the North line of South Half of said Southwest Quarter from a point on the West line of said Southwest Quarter that is 406.45 feet North of the Southwest corner of said Section 9; thence North 89 degrees 51 minutes 29 seconds West on said line and the Westerly prolongation thereof, a total distance of 1,145.58 feet, per the aforesaid deed, (1,144.55 feet, by measurement) . to the aforesaid point on the West line of said Southwest Quarter, said point being also the Southwesterly corner of real estate conveyed to the City of Carmel, Indiana, by a Warranty Deed recorded in said Recorder's Office as Instrument Number 8726638; thence South 00 degrees 19 minutes 51 seconds West on the West line of the Southwest Quarter of said Section 9, a distance of 406.45 feet to the place of beginning, containing 105.981 acres, more or less. Approximate coordinates at the center of the site are as follows: 39056'34" N latitude 86004'46" W longitude 1.3 u u u Soli Information There are four soil types present on the Mueller Property North, as indicated on the Soils Map located on page 3-3 of this Construction Plan. These soils include Ockley Silt Loam, Fox Clay Loam, and Fox Loam. Below is a brief description of each of the soil types. Ocklev Silt Loam COcAl . 0 to 2 percent slopes . Well drained soil . Surface layer dark, yellowish brown silt loam, about 10 inches thick . Subsoil 46 inches thick . Moderate permeability; slow surface runoff Ockley Silt Loam COcB2) . 2 to 6 percent slopes . Well drained soil . Surface layer dark, yellowish brown silt loam, about 7 inches thick . Subsoil 39 inches thick . Moderate permeability; surface runoff medium Fox Clav Loam CFxC3) . 8 to 18 percent slopes, severely eroded . Well drained . Surface layer dark brown clay loam, about 7 inches thick . Subsoil 21 inches thick . Moderate permeability in the subsoil and rapid in the underlying material; surface runoff is medium Fox Loam CFnB2) . 2 to 6 percent slopes, eroded . Well drained . Surface layer dark brown loam about 6 inches thick . Subsoil 30 inches thick . Permeability is moderate in subsoil and rapid in underlying material; surface runoff is medium There are no soil properties or characteristics that limit or pose a hazard for development of the property in the proposed manner. According to the Soil Survey of Hamilton County, the existence of some of the listed soils is associated with the presence of sand and gravel. 1-4 u General Construction Sequence 1. Prior to earth disturbance activities, appropriate erosion and sedimentation controls will be in place to prevent sediment from leaving the subject property. 2. Seed any former cropland areas that do not have a permanent dense vegetative cover. 3. Install interceptor channel downslope of areas to be stripped. Interceptor channel will be extended as overburden stripping progresses. 4. Commence overburden removal. 5. Concurrent with the beginning of overburden removal, commence construction of the berm along 106th Street to provide a sediment barrier. This berm should be seeded (temporary or permanent depending on the weather) immediately upon completion. Silt fence will be installed, if necessary, until berm outslopes are stabilized. 6. 7. 8. U 9. 10. 11. u Continue overburden removal activities. Seed all berms and other affected areas that are not active mining areas as soon as final grade is attained. Temporary erosion and sediment controls, such as the channels and silt fences, will remain in place until the contributing drainage areas are stabilized. These controls may be removed after the upslope areas are vegetated or the drainage area is eliminated by the progression of mining activities. Upon completion of all mining activities, final grade side slopes not inundated at no steeper than 3 to 1 (horizontal to vertical). Concurrent with reclamation sloping and grading activities, install rock stabilization along the lake water level. Revegetate site in accordance with the plans as described on Drawing 2, Erosion and Sedimentation Control and Planting Plan - Post Mining, which is contained in the Mueller Property North Sand and Gravel Operation Erosion and Sediment Control Report, located on page 6-4 of this Construction Plan. 1-5 u u u Hydrologic Unit Code Mueller Property North is located within the HUC14 Watershed Boundary identified by the United States Geological Survey (USGS) as 05120201090040. 1-6 [; o ~~ tf // 1// v () II I ~I >- ~I _--.J llr II II I =- LEGEND ///////////////// Mueller Property North - - - - - Existing Road Tax Parcels Martin Marietta Materials, IneM () NOTE: THE PROPERTY LINE INFORMATION PORTRAYED ON THIS MAP IS AN APPROXIMATE REPRESENTATION BASED ON DATA PROVIDED FROM THE HAMILTON COUNTY GIS DEPARTMENT AND PROPERTY BOUNDARY SURVEYS FOR THE E. & H. MUELLER DEVELOPMENT, L.L.C. PROPERTIES. FILE NAME: North S&G 1228D4.DWG I I I I I Mueller Property North Sand and Gravel Operation Construction Plan DWNG. NO: REDUCED PROJECT SITE MAP Scale 400' DWN BY: DATE: D. Johnston 1/28/05 CK. BY: SCALE: L. Berra 1" = 400' , 800' , 0' 1-7 DATE REVISION ISSUED SHEET NO.. l_ JOB. NO. 1602227 () u u Other Required State and Federal Water Quality Permits \ No other state or federal water quality permits will be required. 1-8 327 lAC 15-5-6.5 (a)(2) VICINITY MAP .~ - N - - <U - 10 co I 10 I 10 ..... () <( l"- N M u u u (2) Vicinity map depicting the project site location in relationship to recognizable local landmarks, towns, and major roads, such as a USGS topographic quadrangle map or county or municipal road map. See attached Vicinity Map on page 2-2. /f~\\I"Z!)"" A \ :>~---.c._~( '.. ' /"..>7 .""</ :>~ L~/ ,,',C:'\ .: \ t-~7 i~f\}U ,j :.J. \/:\ ~, 20'~\\\j'j . ,1 '<I 'Y .--// 2-1 , Quadrangle, Fishers, Indiana Source: USGS 7.5 Photorevised 1988 OWN BY: D. Johnston CK.BY: L. Berra 2 2 Mueller Property North Sand and Gravel Operation Construction Plan VICINITY MAP DATE: 1/28/05 5'1_E: 2000' DWNG. NO: JOB. NO. 1602227 SHEET NO.. 327 lAC 15-5-6.5 (a)(3) EXISTING PROJECT SITE LAYOUT ~ - ('t) - - ro - U1 <0 I It) I It) ~ u <( ,.... N ('t) u (3) An existing project site layout that must include the following information: (A) Location and name of all wetlands, lakes, and water courses on or adjacent to the project site. See Project Site Layout on page 3-2. Note that a Wetland Delineation Report was completed by J.F. New & Associates, Inc. for the Mueller Property North and surrounding areas. No wetlands were found to exist on Mueller Property North. One wetland and two jurisdictional waters of the U.S. were identified near the property to the south and east. These features are indicated on the Project Site Layout. (8) Location of all existing structures on the project site. Existing structures are identified on the Project Site Layout on page 3-2. (C) One hundred (100) year floodplains, floodway fringes, and floodways, Please note if none exists. No portion of the site is located within a 100-year floodplain, including floodway or floodway fringe. See Project Site Layout on page 3-2 for 100-year floodplain located to the south. (D) Soil map of the predominant soil types, as determined by the United States Department of Agriculture (USDA), Natural Resources Conservation Service (NRCS) Soil Survey, or an equivalent publication, or as determined by a soil scientist. A soil legend must be included with the soil map. See Soils Map on page 3-3. (E) Identification and delineation of vegetative cover, such as grass, weeds, brush, and trees, on the project site. See Project Site Layout on page 3-2. (F) Land use of all adjacent properties. See Project Site Layout on page 3-2. (G) Existing topography at a contour interval appropriate to indicate drainage patterns. See Project Site Layout on page 3-2. u --';-~ ;:~.J 1,:- /~, \./y' - , ,,/ 1'- I "I , 7 ~-i i..~i\ '-" \ \ /' \ '\ . " , \. \ ! -- J rJ:'.. -i ':'~~' )' j'--"'. I ... ;'-""'"", , <\) ,-,-:\~/ _L~ -<- u 3-1 Mueller Property North Boundary _ _ _ Mueller North Permit Boundary Soil Boundary OcB2 - Ockley Silt Loam, 2 to 6 percent slopes, eroded FxC3 - Fox Clay Loam, 8 to 18 percent slopes, severely eroded Ockley Silt Loam, 0 to 2 percent slopes Wetland Silty Clay Loam Fox Loam, 0 to 2 percent slopes Fox loam, 2 to 6 percent slopes, eroded pt OcA - We - FnA - FnB2 - OcA I ..--------- OcA FnA Hamilton County, Indiana LEGEND Martin Marietta Materials, IncM Mueller Property North Sand and Gravel Operation Construction Plan SOILS MAP DWN BY: D. Johnston CK.BY: L. Berra DATE: JOB. NO. 1602227 DWNG. NO: 1/28/05 SCALE: 1" = 500' SHEET NO.. 3-3 327 lAC 15-5-6.5 (a)(4) FINAL PROJECT SITE LAYOUT ~ - ~ - - co - It) cO ' I It) I It) ...... u c( l"- N C") Q u u (4) Final project site layout, including the following information: (A) Location of all proposed site improvements, including roads, utilities, lot delineation and identification, proposed structures, and common areas. See Final Project Site Layout on page 4-2. (8) One hundred (100) year floodplains, floodway fringes, and f1oodways. Please note if none exists. Not applicable. As mentioned on page 3-1, no portion of the site is located within a 100-year floodplain. (C) Proposed final topography at a contour interval appropriate to indicate drainage patterns. See Final Project Site Layout on page 4-2. 4-1 - 10 - - CO 327 lAC 15-5-6.5 (a)(5) ~ I GRADING PLAN ~ () <( I'-- N (t) o (5) A grading plan, including the following information: (A) Delineation of all proposed land disturbing activities, including off-site activities that will provide services to the project site. See Grading Plan on page 5-2. (8) Location of all soil stockpiles and borrow areas. Topsoil will be extracted and stored during overburden removal activities. Excess overburden materials will either be used to construct permanent berms or removed from the site. Any soil that is removed from the site will either be sold or stored at the adjacent Carmel Sand Plant or North Indianapo- lis Plant. (C) Information regarding any off-site borrow, stockpile, or disposal areas that are associated with a project site and under the control of the project site owner. Refer to Note No.4 on Grading Plan located on page 5-2. (D) Existing and proposed topographic information. Refer to Note Nos. 2 and 3 on Grading Plan on page 5-2. u u 5-1 327 lAC 15-5-6.5 (a)(6) DRAINAGE PLAN ~ <0 - .-.. co - LO <0 I LO I LO .... () <( l"'- N C") u (6) A drainage plan, including the following information: (A) An estimate of the peak discharge, based on the ten (10) year storm event, of the project site for both preconstruction and postconstruction conditions. See Pages 6-2 through 6-3 for peak discharge estimates. (8) Location, size, and dimensions of all storm water drainage systems, such as culverts, storm sewers, and conveyance channels. The proposed drainage systems were designed for the purpose of erosion and sediment control. Their locations, sizes, and dimensions may be found in the attached "Mueller Property North Sand and Gravel Operation Erosion and Sediment Control Report" on page 6-4. (C) Locations where storm water may be directly discharged into ground water, such as abandoned wells or sinkholes. Please note if none exists. Stormwater will collect in the dredge lake created by mining. There are no abandoned wells, sinkholes, or other known locations where storm water may be directly discharged into ground water. In lateral support areas not affected by mining, the only means of storm water entering the ground water will be via infiltration. (D) Locations of specific points where storm water discharge will leave the project site. In accordance with the previously referenced and attached Mueller Property North Sand and Gravel Operation Erosion and Sediment Control Report, storm water will be contained within the dredge lake during mining opera- tions, resulting in no discharge. During overburden removal activities, storm water will be directed to the existing Carmel Sand Plant lake and/or clean water could possibly discharge through the gaps in the berm along 106th Street, as shown on the figures in the referenced, attached report. (E) Name of all receiving waters. If the discharge is to a separate municipal storm sewer, identify the name of the municipal operator and the ultimate receiving water. The ultimate receiving water is White River. (F) Location, size, and dimensions of features, such as permanent retention or detention facilities, including existing or manmade wetlands, used for the purpose of storm water management. N/A. o u 6-1 2601 NORTH FRONT STREET HARRISBURG, PENNSYLVANIA 17110 (717)232-0593 · 800-892-6532 FAX (717) 232-1799 Subject M/tplfflr- ?r~ MIFf4. p(( - lOl1f TnA~h"lY\ pear.. cltJchur1 e.. Computed by M ~ S Checked by Job No. /OOOla..a-7 Sheet No. _ of _ Drawing No. Date 1/ (p I D 5 SI<.ELLV' ..ANlI:JLc:JV'. INlI:. E"Ical"'EE!FlEI - CClNElUL T.A.N'TEiI 'u ,I- fre.- fl1,1n ~YJ B~,( ~,~ ~1M3 J roJ~. ?<Jill be ~ '\V[ rAeF~P( ar~ eutd~r ~~;-rttte I~~ 4tu. reuw{. IVt? ~ ftB-tV &r ~( f1t9W ,fo tbt 01Hl.eA- ~ t:8tJcI be f)h~, ~~ere~k e6~-y cfll&J~. I~ n~ t2ff"tabk ~ tk. --s~ . IJf)~er runett Cttl1 bf.. e~ll~ rrr ~ /~~ .AJ4tlrWl ~ .Jo ~ ~ re- ~ r~4'-tnir1)~ rof{)fjrle u:TvwI~ ~~~~. u tI ItJ~t&{ --S~rm p'1) ::: if, l- ~, r;~~{ 8f~ C. ~ {aAr- ~r~ ~'1IR4 f6r fu r~-m{.!,IY(j-'- e.&',u:lt1rfliftt eN := 71 !i<<t'lt tX.-= 5 =:c ;;~ - / tJ ::: d, .pl " z ~ ( ? - Ip') ( 4-.2 - (J. 5 3 ) - p+ td? S if. 2- -+ /). <6 x ~.66 1 'I (A ~ t),2-S ~ 0.53 = Q.I3'1 '.7~ r~ff ttf d.13" 1"5 ~. r/-d<!t11 VolfM'he 1ef+ ~r +Ile <i~ afIer )I/,*~ abJitr~lr/i'd"1 .;.0 6Ut4 Nt'f+tw-tlJrt. (Iv. 't1Ut'1t w tU. be Y~/.eMed v 8rft~. Obf- Vf;tk{&f.LS 1e1AJ f~t~ /AJAtIL d'iffe~ flM rtUe$. u ~'-'d- 2601 NORTH FRONT STREET HARRISBURG, PENNSYLVANIA 17110 (717)232-0593 · 800-892-6532 FAX (717) 232-1799 Subject M ut,Htl PfDPll9 "'0 I'ttl P oJ'" - Com hULh ~l P la \(.. at uckta (~ Computed by My..$ Checked by SI<.ELL'V" A.N1C1Lc:J'V", INlC. ENGINEERS. CC3NBLlL "TA.N"TEI Job No. I (J ()d-~).. r Sheet No. _ of _ Drawing No. Date I / U /0 S o u u post- ' H, nl(l~ 1Ylc.- Mlnln1{U,hv. ~, vvdl rtJuJt in hu- cr !atUJIl o~ 0('\ Q(hnual 1~IL', SInLL /)-U, ~(l)-tl1cl wtlj b.t..- t"undokJ w;n, vV MU I (l () fl 0 hUJt-h LL III h t fylthOl1 ~ UL ~ ~,(ell t1 ra Ii c 1/ t nl- 11 t{.ptdc.J . W I b 'if-U( rQl (l{1(11 of t I ~" V\J III bL cW7J II'"-u d C{)tY\puk1~ VV\mlfl f'YL.L la ~ e.. 1Vu-rthY'l, () 0 chu-horf (AI 111 k Db SL( vctl ~Nl .01(, ..r i t c. ~-3 327 lAC 15-5-6.5 (a){8) POSTCONSTRUCTION STORM WATER POLLUTION PREVENTION PLAN ~ - GO - - m - U) co I U) I U) ...... u <( ....... N C") .?~ V u u (8) The postconstruction storm water pollution prevention plan. The plan must include the following information: (A) A description of potential pollution sources from the proposed land use, that may reasonably be expected to add a significant amount of pollutants to storm water discharges. See Post Construction Storm Water Pollution Prevention Plan beginning on page 8-2. (8) Location, dimensions, detailed specifications, and construction details of all postconstruction storm water quality measures. N/A. All water. will be contained in the artificial lake. (C) A description of measures that will be installed to control pollutants in storm water discharges that will occur after construction activities have been completed. Such practices include infiltration of run-off, flow reduction by use of open vegetated swales and natural depressions, buffer strip and riparian zone preservation, filter strip creation, minimization of land disturbance and surface imperviousness, maximization of open space, and storm water retention and detection ponds. See Post Construction Storm Water Pollution Prevention Plan beginning on page 8-2. (D) A sequence describing when each postconstruction storm water quality measure will be installed. See Post Construction Storm Water Pollution Prevention Plan beginning on page 8-2. (E) Storm water quality measures that will remove or minimize pollutants from storm water run-off. See Post Construction Storm Water Pollution Prevention Plan beginning on page 8-2. (F) Storm water quality measures that will be implemented to prevent or minimize adverse impacts to stream and riparian habitat. See Post Construction Storm Water Pollution Prevention Plan beginning on ~~~. . (G) A narrative description of the maintenance guidelines for all postconstruction storm water quality measures to facilitate their proper long term function. This narrative description shall be made available to future parties who will assume responsibility for the operation and maintenance of the postconstruction storm water quality measures. See Post Construction Storm Water Pollution Prevention Plan beginning on page 8-2. 8-1 /""'> "- w MUELLER PROPERTY NORTH SAND AND GRAVEL OPERATION POSTCONSTRUCTION STORM WATER POLLUTION PREVENTION PLAN PREPARED FOR MARTIN MARIETTA MATERIALS, INC. u PREPARED BY SKELLY AND LOY, INC. ENGINEERS-CONSULTANTS JANUARY 2005 u 8-2 v u u TABLE OF CONTENTS PAGE DESCRIPTION OF POTENTIAL POL,LUT ANT SOURCES ..................... 8-4 STORMW A TER MANAGEMENT CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4 8-3 lJ u u POSTCONSTRUCTION STORM WATER POLLUTION PREVENTION PLAN Following completion of mining activities, the side slopes not inundated will be graded no steeper than 3 to 1 (horizontal to vertical) and the site will remain an artificial lake with a post- mining water level of approximately 730' MSL, based on currently available data. As described in the Mueller Property North Sand and Gravel Operation Erosion and Sediment Control Report, stabilization of the lake inslopes will be achieved using rock lining. Rock lining of the inslopes of the dredge lake is proposed in place of vegetative stabilization, as vegetative stabilization may be difficult due to fluctuating water levels. Due to fluctuating water levels following mining, which are expected to vary a maximum of 5 feet between the expected high water and the expected low water elevation, a rock lining that extends a distance of 2.5 feet above and below the normal water elevation for a total vertical distance of 5 feet is proposed. The remaining npn-inundated portions of the site will be revegetated in accordance with the Erosion and Sedimentation Control and Planting Plan - Post Mining, provided in Mueller Property North Sand and Gravel Operation Erosion and Sediment Control Report, located in Section 6 of this Construction Plan. Temporary erosion and sediment controls will remain in place until the contributing drainage areas are stabilized. DESCRIPTION OF POTENTIAL POLLUTANT SOURCES There are no potential pollutant sources associated with the post-mining land use that may reasonably be expected to add a significant amount of pollutants to storm water discharges. 8-4 Sound Level Assessment -- Q) C > Q) ~E "O~ CQ) :::l l/l Ol/l (/)<{