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HomeMy WebLinkAbout19931059 Ver 1_More Info Received_20071217dn~ DAVIS-MARTIN-POWELL 8c ASSOCIATES, INC. ENGINEERING LAND PLANNING SURVEYING 6415 Uld Plank Road, High Point, NC 27265 (336) 886-4821 • Fax (336) 886-4458 • www.dmp-inc.com TRANSMITTAL Date: December 13, 2007 To: Division of Water Quality Re: Attn: Amy Chapman 2321 Crabtree Blvd, Suite 250 Raleigh, NC 27604 We are sending you attached the following items: ^ Shop Drawings ^ Samples ^ Prints ^ Specifications ^ Plans ^ Disk w3- ~o~q v2 Larco Construction E4033 ^ Copy of Letter ^ Other # Copies Drawin # Description Dis osition 1 General Major Variance Application (original) 2 General Major Variance Application (copies) 3 Site Map 3 Vicinity Map 3 ECS report 3 storm drainage/erosion control calculations Remarks: Please accept this package for your review. Please contact Eddie MacEldowney or myself in our office with any questions or comments. Thank you. Lisa Meadows, EI c: File ~~ ~'~ lam ~'~ s~~.; ~ ~_~ ~;C ~ i Z~JC7 EIE~vR -'v~lAT~R C1U~LIT'~" ~~TLANDC F>•~~ 4TC~RE~'~"T~" EiRANCH . ~ - ~y 93-i~sgy2. -_ OFFICE USE Of~SLY: Date Received _ Request # State of Norih Carolina, Department of Environment and tVatura! Resources, Division of Water Quality "~e~~ral" M~~~~ Var~a~c~ e~pp~ic~t~®~ ~®~~ Randleman Lake Water Supply Watershed: Protection and I~lain#enance of Riparian Areas Rule (Randleman Buffer Rule) for PUBLIC ROA!? CONSTRUCTION, IMPROVIEII~ENT & MAINTENANCE ACTIVITIES (As approved by the Water 4uality Committee of the Environmental Management Commission on February 14, 2002) NOTE: To constitute a complete application, al! of the information requested in this form must be provided. Incomplete applications will be returned to the applicant. The original and two copies of the completed "General" Variance Application Form and any atfachmenis must be sent fo the DWQ 401 Wetlands Transportation Unit, 1650 Mai! Service Center, Raleigh, NC 27699-1650 and one copy must be sent to the Piedmont Triad Regional Water Authority (PTRWA}, 2216 W. Meadowview Rd, Wilmington Bldg., Suite 204, Greensboro, NC 27407 to constitute a complete submittal. This form maybe photocopied for use as an original. Part 1: General information Applicant's name (the Division Engineer, project manager, person responsible for project): Eddie MacEldowney 2. Print Owner/Signing Official (person legally responsible for the property and its compliance) Name: Robert Ponton Title: ~ 1~ e g i o n a l M a n a g e r ~~~~~____.-_._..__._..__.___,_w._..__-_~_~__.___~~. _. Street address: _ P 0 Box 16 2 7 9 ~ - ~~ ~~~ __~._ ~~~ City, State, Zip: ~~Win_ston-Salem, NC _27115 _ ~-"_~--~-~-~~~-------~--- Telephone: (3 3 6 .) 7 6 7- 3 5 0 0____~__~~ ~~ _._____ A `_ ~-~"~----~~- Fax: t ~) ._ __._____.__ 3. Contact person who can answer questions about the proposed project: Name: Eddie MacEldowney __ Telephone: -t 33618864821 ..._..^.____~-.._- --~__~~___._--._^------_.. Fax: i 3 3 6 }_8 8 6 =4_4 5 f3 _._..._--~._~ ___ __---_---...___..__._.~_.__.__..___,_._-.-- Email: L_} emac~dm_p-Inc . co!n ._..__~_...___,._._.____ ...._..._.._~ 4. Project Name (Subdivision, facility, or establishment name -consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.}: Larco Constriction 5. Location of Facility Scree#address: _13.3_0 Jackson Lake Road .Ext. City, State, Zip: High Point, NC _~-27263 _ -~ County: _ G u_i I f o r d - - --- --- - -____ _-___~__~ Latitude/longitude: `39°78!.71.2"N ___ 59° 54'49.81fE___._~____._--_.._.~ _- 6. Directions to facility from nearest major intersection (Also attach a map}: FBu~e;~ 8~_.and Ki_v_eL~..D~,t,~'secti.Qt?L~.E~t:~.Riv~i;_t_Dry-5~ S Version 3: January 2006 r ~..r,'~ .L~ ~ ~f i.=~ f i ~ t 6 ?`~ u Ur ~, ~ ~ ~~~,~ f1Ft<R -'tUATER CUAI-ITY ~~'•i tai i`,hl.lru ,. 7, Stream to be impacted by the proposed activity: Stream name (for unnamed streams label as "UT" to the nearest named stream): UT _ _ _ __ __ _ __ _ _ Stream classification [as identified within the Schedule of Classifications ~ 5A NCAC 2B .0311 (Cape Fear River Basin)J: ,__ see_~~chc9cl .rc~, ~ -Frsti,~CS____„~„_,__.__..____ Part 2: Proposed Activity (Please include attachments if additional explanation is necessary} 1. Description of proposed activity: Also, please attach a map of sufficient details to accurately delineate the boundaries of the land to be utilized in can•ying out the activity and to show the location and dimension of any disturbance in the riparian buffers associated with the activity. FiIl~x.__147 l.f, of_intermittent stream channel._.___,__,,,_..._..~__~_~_.__~._ 2. What is the total area of bu#fer impact? Zone 1:..____8440 __~_.__ ft` Zone 2: ''~~ ft`' 3. State the reasons why this activity cannot be practically accomplished without a general major variance approval. State what measures have been taken to minimize or eliminate disturbance to the riparian buffers: There is not enough room at the site location to con~ru~t_the plant_,and allow adequate maneu_v_erabylitp w~thout.f~llinst in the unnermosfr nortzon__ of the channel. Larco will be _voluntarzly z~emovinz ~ 36",,,_p~ne and _r~~__ ve$auazzng~a .portion or the ~erenn~.al ~~r~m a..~n~.~r .~~.~rom trGZS tocat~on as a sood.£aith_measure - When the site is devel~,_storn~aater is required to be routed :hrouQh a retention pond. This will further reduce the flow to this portion of the channel. 4. If sheet flow of concentrated runoff cannot be achieved prior to entering the buffers, then please provide information on any on-site stormwater management facilities (e.g., grassed swales, extended detention wetlands) that will tie used to control nutrients and attenuate flow (attacks construction details and site locations for these facilities): Sheet flog is achieved, zr1 areas. flowing into_the buffers~._____~____~___ 5. Ffow do you intend to provide mitigation if required under Condition No. 7 of the variance? (Attach a mitigation plan if you intend to satisfy the mitigation requirement through tkie restoration of riparian buffers.) Mit~ation.,i~ nQt_.r~guir~d~___________.~ ~__.._.____...__.._.__.___._...___.____..__... Variance Request Form, page 2 Version 3: January 2006 ~ Y ~ I 6. Please explain the practical difficulties or hardships chat would result from the strict application of this Rule: -ue to the_size_of the plant and desire to relocate on_the same site it is necessa_,_y to usg_~the_northern~,ortion of the _~ro,g_erty__gear the_channel~'Fhis ~hanne.Ls4~.a.. par.t.ion_ af. the_.grnp~rt~.~nd_..i.nhiba.T;s.__the__cnnst~~.cxis~n.~f the .l?~~n~..and_~aeuxexab.~ax,x...~xou.n.~. thy.~acilit~ie~.._..~laex.~...a.~~.l~szt~i_>~~~r.b.~~1 and_safety_.~o.nCe~n.~ iJ~..~~8-fie channg~_~1~er~.R.__.__._..____._~..._._..__._..__...._....~__.. Part 3: Applicant's Certification ____J'~-oBERT __ /~... ~~Ta~ __,_,.~.__.__.___.._.___._ sprint or #ype name of person listed in Part (, Item 2), certify that the information included on this permit application form is correct, that the project will be constructed in conformance with the approved plans and That the deed restrictions in accordance with Part 6 of this form wilt be recorded with alf required permit conditions. Signature: Date: Title: Variance Request Roan, page 3 Version 3: January 2006 Sri z I ~' ~ Ni L -` ~\'V ~ /~ s ~ m m yyp ~ ~ l ;~. r \~ ~ \ I AN m~ µ2~ \ - \ Qy ~ / ~ / I f")~ jCA > ~ / I ~~ ) 44~/ ~ ~~ ~ /~ ~~~ ,-, ~ ~__" ~ ~ '~ ~ ~' ,-_ ~ ~ ~ ~ _ ~ ~~ ~ ~~ ~ ~ \ `\~ \\ i `\\\ ~~` . j: \. ~ ( ~\ ~~ I ,: ~ ~ ~ / - \~ ~' ~ ~`~ ` ~ \ ~ ~~ ~l A ~~zmQ \~ \ ~~O N ~ \ ~~msmy \~ 1 ~O~ y~~j ~ lO/1 ~ ~/1 ~ I Y ! .mC7 ~~D~ ~ ~ :~~ ~~ _ ~~~a s / '~~ ~ / "l ~~ b ~ ~ i ~ ~ ~ ~ ~ ~ ~-_ ~, J~~ i ~ ~ _ ~,~~ ~~ ~ ~ m ~ ~~ / ~ _ _ I ~i./ I `` 1 / ~J ` ~ r ~ e ' E f ) !-~~~ i~~ ib it j 1 I_ ~ -~ ~ L._.. I , ' ~ . ~ ~ ~ 1 _.. l 1 _ z~ _ _ ~ _ ~ y { `` m 4~''~ 9 ~ ~'~ - ti "'~ A I ~ ~~ ~a~ ctr ~ _ a S ~ I ~~ ~J' ~CDZVI ppNp~ h. OO= N I \r\ \ e WO,y~mA .. Il>j CCVI '17 <~ \ G i ~ D K O < D > 4) SpDA m lS~ 2 ~ ~m»JNI- % g ~pN~~~g~ ~Onmj>'~D~ o~$mg 8 ~~ `~~ I U m Z~ m~ Z ND ~D O ~~ ~~ Z ~ > .. ~ o m o m O _70 Z ~_ o ~ ~iL~na>~Z ~ ~ ~ry ~ ~~ ~~ ~ € s `- ~ R -, z ~~. ~ mete vwn ip. REV DATE DESCRIPTION BY PROJECT E403S DAVIS-MARTIN-POWELL LA ASSOCIATES, II\~ VALARCO CONSTRUCTIONECOH INC AP DATE ~~9~0~ 6415 OLD PLANK ROAD ~w DESK°NED LSM ENGINEERING O o 1330 JACKSON LAKE ROAD EXT, JAMESTOWN, NC DaAw" LsM Mich PoiNr, Nc z~z65 CHECKED ETM dm (536)886-4821 LAND PLANNING JAMESTOWN TOWNSHIP -GUILFORD COUNTY SCALE ~~=eo FAX (336) 886-4458 suavereD DMP ~ WWw DMP-~NC.CDM SURVEYING r~ ~ ~ ~ \ ~` - ~ ~ ~ ~ ~ A ' ~ `- i . .nl ' ___ _ ,, _ _ ~ ,~ 1 ~ ~ i o ~ ; ~, l -; t/ ~ ~ '~ ~ I ~`ti y\" ~ ~ --.~ _. ~ ~~ `~ V ~ ~A K$ '- ~ ~ ~_~y-._ - y ~-_ I l \ \ ` \ ~ - -- \ ~ ~ \\\ ~~~ _ ~ / -- - `\ ~ ~-_ - ~~. ~ ~ -~ `` ~ \~ ~ ~~ is y~~~, 1 ~-^ _- ~~ _ ~~ ~~ ~lll / ~,\ ~ \\ /^ S ~ ~ 4 : ,~` ~ ~ ~, ~ ABI1tJBONED ~ 9 ~ ~ VAS ~ -- ~ ~, ., ~ .~,~ ~~ .~A ~T ~ ~ . $SE"IN, MAN L ~ \ ~~~ ~ ~~~~ ~ \ \ J , ~ `/ ~~ 'ec . ~ ~ ~ -- ~. ~~ ~ /'°j~ ,~~' is __ ~ ~// \ -_ J /~ ~'`,.~~_ ~ ~ ~ ~ SlcO'At~l COI~ISTR~ICTION ~~ ' / `~ %r'C~ ~ off' '~` c e, ~ ~0,~ INC. ~ -~ ~ ~ ~~V~~~A ~ ~ J j,~`. ~~ ~° ,. ~ ~ ~ DEED B OK 4584 ~ _ ~ )' ~\~~ A\~ ~A\ J ~ • /` ~ ~ ~ ~ PAGE 0566 ~ ~ ~ ~ ~ \\\\~ \\~ ~A\ ',I ~~_ ~ \ / TAX PA`RCEL_# ~ CQ~REQ\ ~\\\\\~~ J g X94-7043-00948-00-039- ~ S~oRx~c' \~~\\\\\\ \ / ~ J y~ '~~ ~ ;i~~ RMI7TENT ZONED: CU HI ~~~~ ~ \V~\\\ ~ J/~ ~ ~ ~ ~~~ ~~~~.~A~f 725,638 S t- - -. - 1~~\~wv~'~~ 0'~ J l/ ~~~~ -i 1 ~ / 16.66 ~ ± mac. ~ ~ _,~~~~~ \ ~` ~ ,_ ~ ~V~ ~ J ~~ '~ ~ i ~' o ~~ ~ Oyu l~=~ff~ ~ ~ ~ %~- ~~ ~ -- _ ~ - .~ ~ .~, _ \ ~ ~ _y ~ ~ \~ ~ ~~ ~~~ ~ ~~ ~ ~ Pl T ~ ~~ ~ ' i. O v cZ ~.. ~ r~ ~ .. ~\ Z ! ./ ~.__ ~`rr a ~, ~ r -~ , - / ^V~`~~ ~ SCIYLES W/ '~ 'L Q, ~ P ` ~ w-,~ ~4~p$ I ~ I //^ i ._~ :~ ~~ MONITOR LLS ~a~M,t` __ -. titi 1 1 ! ~/ -- `~ ~`-'~~ EXISTING A STREAM '~~ ~~ ~ ~~~ ~ ~ ,~ ~. ~" BE REMOVE '~ ~ ~ ~ ~~' INDICATED ORATION AREA ~`l, ` ~ ' O /~`' " STONE AND 1.529tAC.) ~ ~, ,; -`~ ~\~,r,~,Q°$ ,' - STOCK PILE ~~ ~~ ~ + ~ / PIP 1`0~8E REMOVED p0 ~~' ' -~'~~` ~ ~ ~ DAUL 4ND CREEK ~lJFF~R ,~ ` ~ ,, _ i / ~~' _ p DAVIS-MARTIN-POWELL 81 ASSOCIATES, INC VARIANCE REQUEST MAP ~ LARCO CONSTRUCTION COMPANY, INC. ;~ c;~U r-~~r~~, ; 1330 JACKSON LAKE ROAD EXT. HIGH POINT, NORTH CAROLINA ~ SCALE: 1 "=100' r~ ^ ~ ECS CAROLINAS, LLP ~'~~~ Geotechnical • Construction Materials • Environmental r-----~J n,~.fa CAROLINAS November 28, 2006 Mr. Eddie MacEldowney Davis, Martin, Powell 8c Associates, Inc. 6415 Old Plank Road High Point, North Cazolina 27265 Reference: Report of Stream/Wetland Delineation Approximate 34.31 Acre Tract Old Jackson Lake Road High Point, North Carolina ECS Project No. G-13491 Dear Mr. MacEldowney: ECS Cazolinas, LLP (ECS) is pleased to submit this report of the jurisdictional waters/wetland delineation for the site located on Old Jackson Lake Road in High Point, North Carolina. This report summarizes our findings for the site. Background ECS was contracted to identify the locations of waters of the U.S., including wetlands, for the above referenced site. The site is developed with a Larco Asphalt Plant. Portions of the site contain undeveloped, wooded land. Wetlands are defined by the U.S. Army Corps of Engineers and the United States Environmental Protection Agency as "those azeas that are inundated or saturated by surface or groundwater at a frequency and duration sufficient to support, and under normal circumstances, do support a prevalence of vegetation typically adapted for life in saturated soil conditions." In order for an area to be classified as wetland, hydrophytic vegetation, hydric soils, and wetland hydrology indicates must be present. Literature Review We have reviewed the USGS Topographic Map, the Soil Survey of Guilford County and the Geologic map of North Carolina to obtain information regazding the site. • The USGS Topographic Map (Figure 1) shows Richland Creek located along the southern boundary of the site. The map shows an unnamed tributary to Richland Creek crossing the southwestern portion of the site. The map shows drainage swales on the site that could contain surface waters or wetlands. The USDA Soil Survey of Guilford County (Figure 2) shows the same streams as the USGS Topographic Map. Soils on the site are mapped as Enon fine sandy loam (EnB, EnC and EnD), Enon clay loam (EoC2), Wehadkee silt loam (Wh) and Willces sandy loam (WkC and WkE). The Enon series consists of well drained, slowly permeable soils that occur on broad, smooth interstream divides and long, narrow side slopes. The Wehadkee series consists of poorly drained, moderately permeable soils that occur on stream floodplains. The Wilkes series consists of well drained, moderately slowly permeable soils that occur on side slopes that generally border drainage ways. 4811 Koger Boulevard • Greensboro, NC 27407 • (336) 856-7150 • Fax (336) 856-7160 Approximate 34.31 Acre Tract - Dld Jackson Lake Road High Point, North Carolina ECS Carolinas, LLP Project G-13491 November 28, 2006 Wehadkee soils aze identified on the Hydric Soils List for Guilford County as being hydric or as having hydric soils as a major component. The other soils on the site aze not identified on the Hydric Soils List for Guilford County. The Geologic Map of North Cazlina indicates that the site is located in the Carolina Slate Belt of the Piedmont Physiographic Province. The soils encountered in this area are the residual product of in- place chemical weathering of rock presently underlying the site. In general, shallow unconfined groundwater movement within the overlying soils is controlled lazgely by topographic gradients. Recharge occurs primarily by infiltration along higher elevations and typically dischazges into streams or other surface water bodies. The elevation of the shallow water table is transient and can vary greatly with seasonal fluctuations in precipitation. Movement in this water table is generally from higher to lower elevations. As such, shallow groundwater on the site would be expected to flow towazd Richland Creek located along the southern boundary of the site and its unnamed tributary that crosses the southwestern portion of the site. Site Reconnaissance ECS personnel conducted the site reconnaissance on November 27, 2006. The site is an approximate 34.31 acre tract that is located on Old Jackson Lake Road in High Point, North Carolina. A portion of the site is developed with a Lazco Asphalt Plant. The remainder of the site contains undeveloped, wooded land and maintained sewer and powerline easements. During our reconnaissance, we observed the site for evidence of stream channels, wetlands and ponds. Richland Creek is located along the southern boundary of the site. Several streams are located on the site. The streams have meanders, defined beds and banks in most azeas and contained flowing water at the time of our site reconnaissance. The stream that crosses the southwestern portion of the site (depicted on the USGS Topographic Map) and Richland Creek aze perennial, in our opinion. The other streams on the site contained less flow at the time of our reconnaissance and are intermittent, in our opinion. Figure 3 shows the approximate locations of the streams, including our designations. The stream designations are based on our opinion and should be used for preliminary planning purposes only. The designations aze subject to change based on verifications by the U.S. Army Corps of Engineers (LTSACE) and the North Cazolina Division of Water Quality. Wetland hydrology indicators (including inundation and saturated soils), hydrophytic vegetation and hydric soils were observed in pockets, adjacent to two of the streams. The wetland pockets are separated from surrounding uplands by distinct topographic breaks, vegetation breaks and soil breaks. Upland areas surrounding the wetland pockets aze vegetated primarily with honeysuckle, greenbrier, pines, cedars and upland hardwood species. The soils aze bright and appeaz to be well drained to depths of at least twelve inches. The centerlines of the streams and the wetland boundaries were flagged in the field by ECS personnel. Richland Creek is high banked along the southern boundary of the site. Based on conversations with Mr. Eddie MacEldowney with Davis, Martin, Powell and Associates, the top of Richland Creek's banks will be surveyed. Therefore, ECS did not hang flags along Richland Creek. Figure 3 shows the approximate locations of the stream and wetlands located on the site. Routine Wetland Determination Data Forms containing field observations at the locations identified on Figure 3 aze included as Attachments. Figure 3 is based on our field notes and should only be used for preliminary planning purposes. A survey of the flags will show the exact locations and extent of the stream and wetlands on the site. 2 Approximate 34.31 Acre Tract -Old Jackson Lake Road High Point, North Carolina ECS Carolinas, LLP Project G-13491 November 18, 1006 Discussion Section 404 of the clean Water Act regulates the discharge of dredge and fill materials into waters of the United States (lakes, rivers, ponds, streams, etc.), including wetlands. Waters of the United States include the territorial seas, navigable coastal and inland lakes, rivers and streams, intermittent streams, and wetlands. Activities that could be regulated under Section 404 include the placement of fill for construction of roadways; residential, commercial or industrial structures; and the construction of water retention ponds along tributaries. The EPA and the U.S. Army Corps of Engineers jointly administer the Section 404 pmgram. Section 401 of the Clean Water Act grants each state the authority to approve, condition, or deny any Federal permits that could result in a dischazge to State waters. The streams and wetlands located on the site aze regulated by the U.S. army Corps of Engineers and the North Carolina Division of Water Quality. We recommend that the delineated boundaries by verified by the U.S. Army Corps of Engineers. A metes and bounds survey of the jurisdictional boundaries should be conducted after the USACE verification to determine their exact locations and extent. Upon completion, a copy of the wetland/stream survey map should be submitted to the U.S. Army Corps of Engineers for final approval. A site/grading plan can then be developed to determine the extent of the proposed impacts to jurisdictional waters and wetlands, if any. An attempt should be made to minim;~.e or avoid working in these areas, if possible. Permits will be required prior to impacting 1/10 acre or more of wetlands or any open waters, including perennial or intermittent streams. Mitigation and stormwater management plans may be a condition of any permits issued for the site. In addition, buffers maybe required adjacent to the stream and wetlands. For impacts to one-half acre or more of wetlands or to more than 300 lineaz feet of stream channel, an individual permit (lP) maybe required. An IP requires a habitat analysis, alternative site analysis, project justification, plans to avoid and minimize impacts, and a proposed mitigation plan. Depending on the habitat analysis and the extent of impacts, and Environmental Impact Statement may be required by the U.S. Army Corps of Engineers. An ]P allows for a public comment period and may require 4 to 18 months to obtain depending on conditions arising during the U.S. army Corps of Engineers review and public comment period. ECS appreciates the opportunity to provide wetland services for your project. Please contact us at (336) 856-7150 if you have any questions concerning this report. Sincerely, ECS Ca1tOLnvas, LLP ~ ~-~ ~~ Michael T. Brame ~ J Senior Environmental Scientist Attachments: Figure 1-Site Location Map Figure 2 -Soil Map Figure 3 - Stream/Wetland Location Map Routine Wetland Determination Data Forms _O ~ / G~6~:EC~6~0 Denise M. Poulos, LSS ~ Principal Scientist ~ ~ „ J . it ~ ' r ~ ~ _ ~ ~ %~ •~ F s. . 1'~ '\ ~~~.1 , ~ ' 4 A Wit. ~ --!~ _ /^ . ......dddddd :l . 1 1 ! • • I' 1 ~ o , • r t.. ~ . • ' S ~ •/ n r~ {'r. -- c: °° _ - ~ ~ yyntq,p SITE ~~ ' . ~~:,. :~k r ~~ . - -_ ~_ s% a `- a o { .~~.. / ~~~,.1~ ~i~ ` ~~.. j , / ~ ` ;/; ' • 'ma'y '. _ ` • .. - , l ~~~ ~) z ... ~~ .. ,.. ~~y,, .~ . .~ ~ 1 ~ i, ; .. l,, iJ ., 1 1 _..~~ ^,F ~ • - ~ .: ., ~; • ~)t ~ r ~ ~t ,. ~ .bra ., ~ _ ~ r 1 ~ ! ~ ~ ~ i-' r -~ 4 ~ - _ ' ,,i ( ~ y' .. f. .1'. ~ ;_ I ,~ . ~ l ~ 'Pine grove ~' N ~~ FIGURE 1 SOURCE: USGS TOPOGRAPHIC MAP SITE LOCATION MAP HIGH POINT EAST, NC QUADRANGLE n n ~ APPROXIMATE 34-31 ACRE TRACT DATED 1950, REVISED 1982 L~ L~~ OLD JACKSON LAKE ROAD HIGH POINT, NORTH CAROLINA SCALE: 1" = 2,000' CAROLINAS ECS PROJECT NO. G-13491 (loins sheaf 38; _ EnC EoE2_ '-~•~- ~' C ti Wh ~£n ~ _ En6 n c0 ^ra~ EriB ~s'«a: --- t,, MhBT; jEnB ~ ;4',', ~ , ~~r Y ~j ErB -' ~ '~~ r' ~ ~ EnB, „`: EnB ~ Cts. •. E' CcC ~, ~~. .. ,`e,. SITE ,. `~ ~~ '.~,,~~'~. ,-~ ti 1f /, ~...~; i.: ~ tur^ '{ '~`- ~ nG~' F of ~f J / .` ~' ~ F ' , ~:• ~ 4r ~~\~ ~t ~ t'~Vk ~ of ~ \ ~'G.~f ~ ` ~ ~ ~~'~'" 1~ i3~~ .' ~A iSS ~' Y_~ 7 ~ ('~ ~ ~rC ..,~a Aoc - ~ a,u ~ f {. ~ - 1 ~J * ~ MhBz CeC: C; ~ / if k L r ` ~~i K~ <•7kE 1 '~ ~• C' Nh82 Ai'f~ ~~ MsC - ApC NkE ~ ~ ~~ .vkc. Jj . ,' 'VY`- ~~ q 4, ~ f pB ~ r MhB2 ~ ~ ~ i .. Nair EnB ~ • } 4~~ LnB S J . ','+~ • . n C hLL` ~...~ Gf~.`'/^ ~ i ~ W~, :&MC,~' l ~ (~ APB nI .r . ~~_1 UBJ.,h Y ,•' t~'f • IiP't..~H. .,+ ~+ ~MU $ '~~+~ V88 ro ~ J -~~o ,t ,r .. ~~ ~ ~ ~ APB ~~ ~~~ ~ ~ ° K ~ ~ ,i" r~ ^EnO ~ '~ ~. ~ ^ r L - 7 ,,1 , 1 '. ~";..~. " • t . 4 ° r En8 ~w.R V ~ ~ FC ' ~. 4;.~~.,. „r 7C ^:ADB~ ~ - 1 En8 ~.y:. F ,. "' EnC .~~ . -"s .. x ^i; ~ .' .,~ ,~ sk" i~ . - .K a ~ ' 2 .; ~~. . . ~--- } RAIYllOLPN COUNTI" N SOURCE: FIGURE 2 r USDA SOIL SURVEY OF SOIL MAP GUILFORD COUNTY ~ APPROXIMATE 34.31 ACRE TRACT SHEET NUMBER 44 ° OLD JACKSON LAKE ROAD ISSUED DECEMBER 1977 Qty ~ A I^ c HIGH POINT, NORTH CAROLINA NOT TO SCALE ~~ ~~~~' ~"~7 ECS PROJECT N0. G-13491 THE STREAM/WETLAND LOCATIONS SHOWN ON THIS MAP ARE APPROXIMATE. THEY HAVE BEEN DELINEATED BY ECS. THEY HAVE NOT BEEN VERIFIED BY THE U.S. ARMY CORPS OF ENGINEERS AND THEY HAVE NOT BEEN SURVEYED. ~ ~ ~o _ `~/ ~ '1. ~O. 1 ~ ~, .._ _ _ ~r• o~ -- - >~.r„ ~ .p '~ ~ _ _, _ 'u1y^ yw d! T16 V'f ;P 'I , ' :k'• ~ _ , , , ,~ .. i _ R - R. .-j ~ r ~ a ~__, DP 1 O Q ' ~~nca ,wrw ~ ~~ r i0.t YM )ND-~yF. ~ !O[C, 1 1 ~. 1 !~ _ _ ~ i N~~~~PAIM' WARRY ~ =~, , L ~~ ;.tier _! p l` 1 ~ ~\`+ _ 7q0 - rte','` .. o° \. ~ X50 ..~ _ I. \ \. - + 719.5 ~ /112 _ - _ DP 2 O ;., ti ~ ~ ~ ~'~ 72.6 715.~C', _ ,: ~..,,,~. ` ~ :. 730. 1 ` ~ _ xr.,r~ ~ ~~ - 1 ..f ~~~~J``~ ` tit` --- '. r r ~ +, 2p 1 .` J; ~ - _._ _ i 727.1 ~.; x ~ ~.. 705.3 ~ ATV - - . ~ •.. ,omw.trr ._.~..'~! ~ ~/~' 7ZQ- 7304'. ~'~ ~-- ~- - /~~ ~ ~b rr~~c ~rev ~o-twpo-vi ~,'~w,~- _ _ , ~ A 1000 K ]A ~ _ Legend 7?7.3 .._ _ Approximate Location of Wetland ~' Approximate Location of Perennial Stream 716 2~ 747 3 ~ ~ Approximate Location of Intermittent Stream ._: DP 1 O Approximate Location of Data Point `, N •l FIGURE 3 SOURCE: STREAM/WETLAND LOCATION MAP TOPOGRAPHIC MAP PREPARED BY DAMS- APPROXIMATE 34.31 ACRE TRACT MARTIN-POWELL & ASSOCIATES, INC. AND ~, ° OLD JACKSON LAKE ROAD FIELD NOTES PREPARED BY ECS PERSONNEL HIGH POINT, NORTH CAROLINA NOT TO SCALE CAROLINAS ECS PROJECT NO. G-13491 DATA FORM ROUTINE WETLAND DETERMINATION 1987 COE Wetlands Delineation Manual) ProjecdSite: Approximate 34.31 Acre Tract -Old Jackson Lake Road Project No: Date: November 27, 2006 Applicant/Owner: Davis, Martin Powell & Associates County: Guilford Investigators: ECS Carolinas, LLP G-13491 State: North Carolina Plot ID: DP-1 Do Normal Circumstances exist on the site? Yes No Community ID: Is the site significantly disturbed (Atypical Situation:)? eyes No Transect ID: Is the area a potential Problem Area? Yes No Field Location: View Figure 3 (If needed, explain on the reverse side) ~7L !?Ti T A T7f1N Dominant Plant Species (Latin/Common) Stratum Indicator Plant Species (Latin/Common) Stratum Indicator Alms serrulata Brookside alder Tree/Sap FACW+ Juncus sp. Rush sp. Herb FACW Rosa palustrie Swamp rose Herb OBL Typha latifolia Broad-leaf cattail Herb OBL Percent of Dominant Species that are OBL, FACW or FAC: 100% (excluding FAC-) FAC Neutral: Numeric Index: Remarks: The dominant vegetation is hydrophytic. HYDROLOGY Recorded Data (Describe in Remarks): Stream, Lake or Tide Gauge Aerial Photographs Othe! ® No Recorded Data Field Observations Depth of Surface Water: 0" Depth to Free Water is Pit: Z" Depth to Saturated Soil: Surface Wetland Prima econ Hydrology Indicators ry Indicators Inundated Saturated in Upper 12 Inches Water Marks Drift Lines Sediment Deposits Drainage Patterns in Wetlands dary Indicators Oxidized Root Channels in Upper 12 Inches Water-Stained Leaves Local Soil Survey Data FAC-Neutral Test Other (Explain in Remarks) Remarks: Wetland hydrology indicators are present. (Wetform) Page 1 of 2 DATA FORM ROUTINE WETLAND DETERMINATION 1987 COE Wetlands Delineation Manual Project/Site: Approximate 34.31 Acre Tract -Old Jackson Lake Road Project No: Date: November 27, 2006 Applicant/Owner: Davis, Martin Powell & Associates County: Guilford Investigators: ECS Carolinas, LLP G-13491 State: North Carolina Plot ID: DP-1 Map Unit Name (Series and Phase): Wilkes sandy loam Map Symbol: WkE Drainage Class: Well drained Mapped Hydric Inclusion? ^Yes ®No Field Observations Confirm Mapped Type: ^Yes ®No Tazonomy (Subgroup): Typic hapludalfs Profile Descri lion Depth Matrix Color Mottle Color Mottle inches Horizon unsell Moist) unaell Moist) Abundance/Contrast Texture, Concretions, Structure, etc. 0-12" 2.5Y 4/2 lOYR 4/4 15% Loam Hydric Soil Indicators: ^ Histosol ^ Concretions ^ Histic Epipedon ^ High Organic Content in Surface Layer in Sandy Soils ^ Sulfidic Odor ^ Organic Streaking in Sandy Soils ^ Aquic Moisture Regime ^ Reducing Conditions ^ Listed on Local Hydric Soils List ^ Listed on National Hydric Soils List ® Gleyed or Low Chroma Colors ^ Other (E lain in Remarks) Remarks: Hydric soil indicators are present. WETLAND DETERMINATION Hydrophytic Vegetation Present? yes No Is the Sampling Point within the Wetland? Yes No Wetland Hydrology Present? ®yes No Hydric Soils Present? ®yes ^ No Remarks: The three wetland criteria are present. The sampling point is located within a wetland. (Wetform) Page 2 of 2 DATA FORM ROUTINE WETLAND DETERMINATION 2987 COE Wetlands Delineation Manual Project/Site: Approximate 34.31 Acre Tract -Old Jackson Lake Road Project No: Date: November 27, 2006 Applicant/Owner: Davis, Martin Powell & Associates County: Guilford Investigators: ECS Carolinas, LLP G13491 State: North Carolina Plot ID: DP-2 Do Normal Circumstances east on the site? Yes No Community ID: Is the site signit3cantly disturbed (Atypical Situation:)? Yes No Transact ID: Is the area a potential Problem Area? Yes ®No Field Location: View Figure 3 (If needed, explain on the reverse side) VF.(:F,TATiON Dominant Plant Species (Latin/Common) Stratum Indicator Plant Species (Latin/Common) Stratum Indicator Acer rubrum Red maple Tree/Sap FAC Carpinus caroliniana American hornbeam Tree/Sap FAC Smilax rotundifoHa Common greenbrier Vine FAC Percent of Dominant Species that are OBL, FACW or FAC: 100% (excluding FAC-) FAC Neutral: Numeric Index: Remarks: The dominant vegetation is hydrophytic. HYDROLOGY Recorded Data (Describe in Remarks): ^ Stream, Lake or Tide Gauge Aerial Photographs Other ® No Recorded Data Field Observations Depth of Surface Water: 0" Depth to Free Water in Pit: 8" De th to Saturated Soil: 4" Wetla Pri ec nd Hydrology Indicators mary Indicators Inundated Saturated in Upper 12 Inches Water Marks . Drift Lines Sediment Deposits ®Drainsge Patterns in Wetlands ondary Indicators Oxidized Root Channels in Upper 12 Inches Water-Stained Leaves Local Soil Survey Data FAC-Neutral Test Other (Explain in Remarks) Remarks: Wetland b drolo indicators are resent. (Wetform) Page 1 of 2 DATA FORM ROUTINE WETLAND DETERMINATION 1987 COE Wetlands Delineation Manual Project/Site: Approximate 34.31 Acre Tract -Old Jackson Lake Road Project No: Date: November 27, 2006 Applicant/Owner: Davis, Martin Powell & Associates County: Guilford Investigators: ECS Carolinas, LLP G13491 State: North Carolina PIot ID: DP-2 Map Unit Name (Series and Phase): Enon fine sandy loam Map Symbol: EnD Mapped Hydric Inclusion? ^Yes ®No Drainage Class: Well drained Field Observations Confirm Mapped Type: ®Yes ^ No Tazonomy (Subgroup): Ultic hapludalfs Profile Descri tion Depth Matrix Color Mottle Color Mottle (inches Horizon unsell Moist) unwell Moist Abundance/Contrast Tezture, Concretions, Structure etc. 0-12" 2.5Y 4/3 0% Loam Hydric Soil Indicators: ^ Histosol ^ Concretions ^ Histic Epipedon ^ High Organic Content in Surface Layer in Sandy Soils ^ Sulfidic Odar ^ Organic Streaking in Sandy Soils ^ Aquic Moisture Regime ^ Listed on Local Hydric Soils Liat ^ Reducing Conditions ^ Listed on National Hydric Soils List ^ Gleyed or Low Chroma Colors ^ Other (Ezplain in Remarks) Remarks: Hydric soil indicators are not present. WETLAND DETERMINATION Hydrophytic Vegetation Present? yes ~ No Is the Sampling Point within the Wetland? UYes ~ No Wetland Hydrology Present? y~ No Hydric Soils Present? ^yes ®No Remarks: Hydric soil indicators are not present. The sampling point is not located within s wetland. (Wetform) Page 2 of 2 STORM DRAINAGE /EROSION CONTROL CALCULATIONS LARCO CONSTRUCTION HIGH POINT, NORTH CAROLINA DMP PROJECT E-4033 LARCO CONSTRUCTION Storm Sewer Pipe Calculations AT t'E.k '1'Y1~S , / .~ ~f z.C ; " (r` ~,~~ n DIAMS3'Hit ~ VeL - ~'~R h ' ' _~V~i'~T;1IL.&~. ` Y '' ~ 11aA}a Total Inltt Pike 7;'o~il. Tfu~n, - Total - G1c. l'top. ~ f•wl ,o `~ T~ I I~i N10r- '(]1~, Lb~wrr (ac.) ac. a mtn. miri n./hr. Total_ (~) dy ( ) In.) k {fl.L Tt~ste ~) S$~) 1 2 1.17 1.17 5 0.48 5.48 6.77 0.95 0.95 7.54 7.54 1.00% 0.012 15 18 6.4 184.00 0.48 765.78 763.94 5 2 0.45 0.45 5 0.18 0.18 8.38 0.95 0.95 3.61 3.61 2.00% 0.012 10 18 9.1 100.00 0.18 766.69 764.69 2 3 Out 0.95 2.58 5 0.10 5.58 6.75 0.95 0.95 6.10 16.52 8.00% 0.012 14 18 18.2 108.00 0.10 755.64 747.00 8 9 out 0.25 0.25 5 0.08 0.27 8.35 0.95 0.95 1.95 1.95 8.00% 0.012 6 15 16.1 80.00 0.08 752.66 746.26 6 10 1.28 1.28 5 0.25 0.43 8.29 0.95 0.95 10.11 10.11 2.00% 0.012 15 15 8.1 120.00 0.25 766.86 764.46 10 11 0.66 1.94 5 0.26 0.52 8.26 0.95 0.95 5.15 15.22 2.00% 0.012 18 18 9.1 140.00 0.26 764.26 761.46 11 12 0.60 2.54 5 0.22 5.22 6.83 0.95 0.95 3.91 16.51 4.00% 0.012 16 18 12.9 168.00 0.22 760.46 753.74 12 13 out 0.93 3.47 5 0.08 0.08 8.42 0.95 0.95 7.43 27.78 2.00°k 0.012 22 24 11.0 52.00 0.08 753.44 752.40 14 14A 1.30 1.30 5 0.04 0.12 8.41 0.95 0.95 10.38 10.38 19.02% 0.012 10 15 24.8 62.00 0.04 791.50 779.71 14A 15 0.00 1.30 5 0.25 0.25 8.36 0.95 0.95 0.00 10.32 2.22% 0.012 15 18 9.6 144.00 0.25 779.51 776.31 15 16 0.54 1.84 5 0.08 5.08 6.87 0.95 0.95 3.49 11.97 2.00% 0.012 16 18 9.1 42.00 0.08 776.11 775.27 16 17 0.07 1.90 5 0.31 5.31 6.81 0.95 0.95 0.43 12.31 2.50% 0.012 16 18 10.2 188.00 0.31 775.07 770.37 17 18 0.41 2.31 5 0.10 5.41 6.79 0.95 0.95 2.64 14.90 3.00% 0.012 16 18 11.1 68.00 0.10 770.17 768.13 18 19 0.06 2.37 5 0.25 5.66 6.72 0.95 0.95 0.39 15.15 2.00% 0.012 18 18 9.1 136.00 0.25 767.93 765.21 19 20 0.35 2.72 5 0.11 5.77 6.70 0.95 0.95 2.22 17.31 2.00°~ 0.012 18 24 11.0 74.00 0.11 765.01 763.53 20 21 0.08 2.81 5 0.12 5.89 6.67 0.95 0.95 0.53 17.77 8.00% 0.012 14 24 22.0 158.00 0.12 760.33 747.69 21 22 1.13 3.85 5 0.11 5.89 6.67 0.95 0.95 7.15 24.39 0.50% 0.012 27 30 6.4 44.00 0.11 747.49 747.27 22 23 0.08 3.93 5 0.31 6.20 6.60 0.95 0.95 0.50 24.62 0.50% 0.012 27 30 6.4 118.00 0.31 747.07 746.48 052107-E4033-StormSystem.xls OAV/5-MART/N-POW£LL 1 2/1 312 0 0 7 LARGO CONSTRUCTION Min. Ground Cover= 4.00 @. Top of GRATE/ Pipe Invert Top of Pipe Pipe Cover Calc. Diameter Ground Elev. Elevation Elevation Slope Calc Used 1 2 770.9 770.9 765.78 763.94 767.28 765.44 3.62 5.46 1.00% 15.41 18 5 2 772.7 770.9 766.69 764.69 768.19 766.19 4.51 4.71 2.00°h 10.27 24 2 3(out) 770.9 747.0 755.64 747.00 757.14 748.50 13.76 -1.50 8.00% 14.00 24 8 9(out) 768.5 747.0 752.66 746.26 753.91 747.51 14.59 -0.51 8.00°k 6.29 15 6 10 772.3 771.0 766.86 764.46 768.11 765.71 4.19 5.29 2.00% 15.10 15 10 11 771.0 769.8 764.26 761.46 765.76 762.96 5.24 6.84 2.00% 17.61 18 11 12 769.8 762.8 760.46 753.74 761.96 755.24 7.84 7.56 4.00% 15.94 18 12 13(out) 762.8 756.0 753.44 752.40 755.44 754.40 7.36 1.60 2.00% 22.07 24 14 14A 801.5 784.0 791.50 779.71 792.75 780.96 8.75 3.04 19.02% 10.00 15 14A 15 784.0 781.9 779.51 776.31 781.01 777.81 2.99 4.09 2.22% 14.93 18 15 16 781.9 782.0 776.11 775.27 777.61 776.77 4.29 5.23 2.00°k 16.10 18 16 17 782.0 776.4 775.07 770.37 776.57 771.87 5.43 4.53 2.50% 15.60 18 17 18 776.4 773.6 770.17 768.13 771.67 769.63 4.73 3.97 3.00% 16.19 18 18 19 773.6 771.0 787.93 765.21 769.43 766.71 4.17 4.29 2.00% 17.58 18 19 20 771.0 769.5 785.01 763.53 767.01 765.53 3.99 3.97 2.00% 18.48 24 20 21 769.5 753.0 760.33 747.69 762.33 749.69 7.17 3.31 8.00% 14.39 24 21 22 753.0 753.0 747.49 747.27 749.99 749.77 3.01 3.23 0.50% 27.26 30 22 23 753.0 752.2 747.07 746.48 749.57 748.98 3.43 3.22 0.50% 27.35 30 052107-E4033-StormSystem.xls OAV/8-MART/N-POWeLL 12/13/2007 ~~ ENGINEERING -LAND PLANNING -SURVEYING b415 LLD PLANK ROAD HIGH POINT, NC ~7~2b5 ® (336} 886-4821 FAx (336) 88b-4458 TEMPORARY SEDIMENT TRAP CALCULATIONS PROJECT INFORMATION Job No: Job Description: Job Location: Owner: Address: Temporary Sediment Trap DESIGN DATA Runoff Coefficient (C) _ Intensity (I) _ Drainage Area (A) _ Disturbed Area = E4033 LARCO CONSTRUCTION JACKSON LAKE ROAD EXT. HIGH POINT, NC LARCO CONSTRUCTION #1 0.5 ' S:8 IN./HR 0.854 AC. 0.9 AC. 2 Year Storm Peak Inflow (Q=CIA) _ DIMENSIONS REQUIRED Surtace Area Required = Volume Required = 2.4766 C.F.S. 1079 S. F. 3240 C.F. 0.01 Acre /Peak Flow 3600 C.F. / Dist. Acre DIMENSIONS PROVIDED Basin Size: Bottom (ft) Length = 32 Width = 7 Depth = 4.5 Top (ft) 50 2:1 Ratio 25 3.5' min depth Surtace Area Provided = 1250 S.F. YES Volume Provided = 3316.5 C.F. YES Weir length = 4 FT. ~ ENGINEERING -LAND PLANNING -SURVEYING b415 dLD PLANK RQAD HIGH POINT, NC 2~2b5 11~ {336 886-481 FAx (336) 88b-4458 TEMPORARY SEDIMENT TRAP CALCULATIONS PROJECT INFORMATION Job No: Job Description: Job Location: Owner: Address: Temporary Sediment Trap DESIGN DATA E4033 LARCO CONSTRUCTION JACKSON LAKE ROAD EXT. HIGH POINT, NC LARCO CONSTRUCTION #2 Runoff Coefficient (C) _ Intensity (I) _ Drainage Area (A) _ Disturbed Area = 0.5 5.8 IN./HR 1.36 AC. 1.4 AC. 2 Year Storm Peak Inflow (Q=CIA) _ 3.944 C.F.S. DIMENSIONS REQUIRED Surface Area Required = Volume Required = 1718 S.F. 5040 C.F. 0.01 Acre /Peak Flow 3600 C.F. / Dist. Acre DIMENSIONS PROVIDED Basin Size: Bottom (ft) Length = 50 Width = 18 Depth = 3.5 2:1 Ratio 3.5' min depth Top (ft) 64 32 Surface Area Provided = 2048 S.F. YES Volume Provided = 5159 C.F. YES Weir length = 6 FT. ~v~® ENGINEERING - LAND PL~1N1`11NG -SURVEYING 6415 OLD PLANK RpAD HIGH POINT, NC ~7~265~ (336} 88b-481 FAx (336) 88b-4458 TEMPORARY SEDIMENT TRAP CALCULATIONS PROJECT INFORMATION Job No: Job Description: Job Location: Owner: Address: Temporary Sediment Trap DESIGN DATA E4033 LARCO CONSTRUCTION JACKSON LAKE ROAD EXT. HIGH POINT, NC LARCO CONSTRUCTION #3 Runoff Coefficient (C) = 0.5 Intensity (I) _ ' 5.8 IN./H R. 2 Year Storm Drainage Area (A) = 1.122 AC. Disturbed Area = 1:2 AC. Peak Inflow (Q=CIA) = 3.2538 C.F.S. DIMENSIONS REQUIRED Surface Area Required = 1417 S.F. 0.01 Acre /Peak Flow Volume Required = 4320 C.F. 3600 C.F. / Dist. Acre DIMENSIONS PROVIDED Bottom (ft) Top (ft) Basin Size: Length = 46 60 2:1 Ratio Width = 16 30 Depth = 3.5 3.5' min depth Surface Area Provided = 1800 S.F. YES Volume Provided = 4438 C.F. YES Weir length = 6 FT. TEMPORARY SEDIMENT TRAP CALCULATIONS PROJECT INFORMATION Job No: Job Description: Job Location: Owner: Address: Temporary Sediment Trap DESIGN DATA Runoff Coefficient (C) _ Intensity (I) _ Drainage Area (A) _ Disturbed Area = E4033 LARCO CONSTRUCTION JACKSON LAKE ROAD EXT. HIGH POINT, NC LARCO CONSTRUCTION #4 0_`5 -5:8 IN./HR. 4.028 AC. 4:1 AC. 2 Year Storm Peak Inflow (Q=CIA) _ DIMENSIONS REQUIRED Surface Area Required = Volume Required = DIMENSIONS PROVIDED Basin Size: 11.681 C.F.S. 5088 S.F. 0.01 Acre /Peak Flow 14760 C.F. 3600 C.F. / Dist. Acre Bottom (ft) Length = 88 Width = 37 Depth = 3.5 Top (ft) 102 2:1 Ratio 51 3.5' min depth Surface Area Provided = 5202 S.F. YES Volume Provided = 14802 C.F. YES Weir length = 10 FT. ~~ ENGINEERING - ~~ND PL~INNING -SURVEYING 6415 OLD PLANK ROAD HIGH POINT, NC 27~b5 ® (33b) 886-~48~1 Fix (336) 88b-4458 TEMPORARY SEDIMENT TRAP CALCULATIONS PROJECT INFORMATION Job No: Job Description: Job Location: Owner: Address: Temporary Sediment Trap DESIGN DATA Runoff Coefficient (C) _ Intensity (I) _ Drainage Area (A) _ Disturbed Area = E4033 LARCO CONSTRUCTION JACKSON LAKE ROAD EXT. HIGH POINT, NC LARCO CONSTRUCTION #5 0.5 5'.8 IN./HR. 0,854 AC. Q.8 AC. 2 Year Storm Peak Inflow (Q=CIA) _ DIMENSIONS REQUIRED Surface Area Required = Volume Required = DIMENSIONS PROVIDED Basin Size: 2.4766 C.F.S. 1079 S.F. 0.01 Acre /Peak Flow 2880 C.F. 3600 C.F. / Dist. Acre Bottom (ft) Length = 30 Width = 6 Depth = 4.5'' Top (ft) 48 2:1 Ratio 24 3.5' min depth Surface Area Provided = 1152 S.F. YES Volume Provided = 2997 C.F. YES Weir length = 4 FT. ~ ENGINEERING -LAND P~ANNIhJG -SURVEYING b415 OLD PLANK ROAD HIGH POINT, NC z1.2b5 ~ (33b} 88b-481 F~,X (336) 88b-4458 TEMPORARY SEDIMENT TRAP CALCULATIONS PROJECT INFORMATION Job No: Job Description: Job Location: Owner: Address: Temporary Sediment Trap E4033 LARCO CONSTRUCTION JACKSON LAKE ROAD EXT. HIGH POINT, NC LARCO CONSTRUCTION #6 DESIGN DATA Runoff Coefficient (C) _ Intensity (I) _ Drainage Area (A) _ Disturbed Area = 0.5 5.'8 IN./HR. 0:193 AC. 0.19 AC. 2 Year Storm Peak Inflow (Q=CIA) _ 0.5597 C.F.S. DIMENSIONS REQUIRED Surface Area Required = Volume Required = 244 S. F. 684 C.F. 0.01 Acre /Peak Flow 3600 C.F. / Dist. Acre DIMENSIONS PROVIDED Basin Size: Bottom (ft) Length = 14 Width = 0 Depth = 3.5 2:1 Ratio 3.5' min depth Top (ft) 28 14 Surface Area Provided = 392 S.F. YES Volume Provided = 686 C.F. YES Weir length = 4 FT, ~~® ENGINEERING -LAND PLANNING -SURVEYING b415 QLD PLANK ROAD HIGH POINT, NC ~7~65 1®'11 (33b~ 886-481 FAx (336 88b-4458 TEMPORARY SEDIMENT TRAP CALCULATIONS PROJECT INFORMATION Job No: Job Description: Job Location: Owner: Address: Temporary Sediment Trap DESIGN DATA E4033 LARCO CONSTRUCTION JACKSON LAKE ROAD EXT. HIGH POINT, NC LARCO CONSTRUCTION #7 Runoff Coefficient (C) _ Intensity (I) _ Drainage Area (A) _ Disturbed Area = Peak Inflow (Q=CIA) _ DIMENSIONS REQUIRED Surface Area Required = Volume Required = DIMENSIONS PROVIDED Basin Size: a. 5:$ IN./HR. 0.753 AC. 0:75 AC. 2.1837 C.F.S. 2 Year Storm 951 S.F. 0.01 Acre /Peak Flow 2700 C.F. 3600 C.F. / Dist. Acre Bottom (ft) Length = 29 Width = 5.5 Depth = 4.5 Top (ft) 47 2:1 Ratio 23.5 3.5' min depth Surface Area Provided = 1104.5 S.F. YES Volume Provided = 2844 C.F. YES Weir length = 4 FT. ~~ ENGINEERING - LAND PUNNING -SURVEYING 6415 OLD PLANK ROAD HIGH POINT, NC 27.65 el (336) 886-~48~1 FAx X336) 88b-4+58 TEMPORARY SEDIMENT TRAP -CALCULATIONS PROJECT INFORMATION Job No: Job Description: Job Location: Owner: Address: Temporary Sediment Trap E4033 LARCO CONSTRUCTION JACKSON LAKE ROAD EXT. HIGH POINT, NC LARCO CONSTRUCTION #8 DESIGN DATA Runoff Coefficient (C) _ Intensity (I) _ Drainage Area (A) _ Disturbed Area = Peak Inflow (Q=CIA) _ DIMENSIONS REQUIRED Surface Area Required = Volume Required = DIMENSIONS PROVIDED Basin Size: 0.5 5.8 IN./HR :0.46 Ac. 0:'14 AC. 0.4234 C.F.S. 2 Year Storm 184 S.F. 0.01 Acre /Peak Flow 504 C.F. 3600 C.F. / Dist. Acre Bottom (ft) Length = 14 Width = 0 Depth = 3.5 Top (ft) 28 2:1 Ratio 14 3.5' min depth Surface Area Provided = 392 S.F. YES Volume Provided = 686 C.F. YES Weir length = 4 FT.