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Home My WebLink About20061712 Ver 1_Staff Report_20061206Staff Report Project Num: 20061712 Version: 1 Status: Received Name: Vulcan Materials: East Forsyth Quarry Project Type: Mining Activities County: Forsyth Region: Winston-Salem Location: UT Cuddybum Branch Latitude: Longitude: SW Plan Location: Owner: Knopf, Tim Contact Person: Knopf, Tim Inspection Date: 12/06/2006 Reason for Inspection: Routine On-Site Representative(s): Primary Inspector: Daryl Lamb Secondary Inspector(s): Question Areas: Site Visit Title: Phone: Entry Time:10:30 AM Exit Time: 12:30 PM Inspection Type: Staff Report Phone: 919-771-5000 Page: 1 Project Num: 20061712 Owner: Knopf, Tim Inspection Date: 12/06/2006 Inspection Type: Staff Report Reason for Visit: Routine Inspection Summary: Nature of Impact Site: Aggregate quarry. Low to medium density residential areas nearby. Project Area: 57 acres Impacts: 289 If of intermittent stream and 519 If of perennial stream for relocation into a constructed permanent diversion channel. Topographic and area constraints preclude a fully natural channel design. Stream relocation is necessary to allow for expansion of quarry operations to the south. Avoidance and Minimization: Acceptable. Applicant considered five options including "no buid" and expansion to the west and east. Proposed plan is the expansion option with the least impact to streams. The "no build" option would reduce the productive life of the quarry to one year, resulting in closure by 2008 or 2009. Mitigation: Required. The applicant will pay NC EEP for restoration of 808 If of warm water stream. Buffer Impacts: None. stormwater Management Plan: A separate plan is not required. Vulcan Materials agrees to direct all stormwater runoff from the quarry operations area, including the proposed expaned area south of the current pit, to the quarry pit and onsite retention and treatment basins. Water Quality Certification Authorization: Individual Certification Corresponding 404 Permit: Individual WSRO Recommendations: 1) Applicant must demonstrate a good faith effort to incorporate floodplain benching and construction of pool and riffle sequences into the constructed diversion channel wherever space and gradient allow. 2) Energy dissipation and sheet flow must be provided for the stormwater discharges of any existing RCP outlets along Old High Point Road which are to be tied into the constructed diversion channel. 3) Buffer restrictions which are applicable to WS-III streams (15A NCAC 02B .0215) must be observed for the riparian zone of the constructed diversion channel. 4) Where rip rap is required for energy dissipation and scour protection, it shall be limited to the minimum area and dimensions specified by appropriate engineering calculations. Rip rap may only be used below the design normal high water level. The rip rap must maintain the design grade and elevation of the stream's cross-section. Rip rap placed in the channel bottom must be inserted into the bottom matrix to a depth sufficient to provide the thickness of rip rap required for scour protection. The elevation of the channel bottom must not be increased above design grade by the placement of rip rap. 5) Appropriate sediment and erosion control measures which equal or exceed those outlined in the most recent version of the North Carolina Surface Mining Manual shall be designed, installed, and maintained properly to assure compliance at all times with the North Carolina water quality standards that are applicable to Class WS-III waters as described in 15A NCAC 02B .0215, "Fresh Surface Water Quality Standards for Class WS-III Waters". 6) No stormwater runoff from the quarry operating area is to be discharged into any stream. Page: 2 Project Num: 20061712 Owner: Knopf, Tim Inspection Date: 12/06/2006 Inspection Type: Staff Report Reason for Visit: Routine Site Visit Yes No NA NE Do impacts described in the application differ those seen in the field? ^ ^ ^ ^ If yes, please describe differences: Are the Intermittent/Perennialcatls different in the application? ^ ^ ^ ^ If yes, please describe differences, and how mitigation ratios are affected: Are there additional impacts not described in the application? ^ ^ ^ ^ If yes, please describe and quantify: Were the impacts in place prior to the application for the 401 Certification? ^ ^ ^ ^ Additional conditions recommended for the Certification: Recommended project modifications: Is this a modification request to an existing Certification? ^ ^ ^ ^ Are there additional stromwater conditions that should be required due to the following classifications: ^ ^ ^ ^ # 303(d)list, Class WS, NSW, ORW, HQW Describe: Is this a subdivision or otherwise part of a larger project? ^ ^ ^ ^ # If yes, what phase is this? Stream relocation to allow for quarry expansion Are there prior impacts from prior phases? ^ ^ ^ ^ If yes, what are the cumulative imacts for this project? Possible secondary impacts noted: Comment: Page: 3 ~ ;", m ... - __ ,, r- Surrunary G , Protect Number 20061 12 ~ Version I1,0 i 91atu8 Recehed i 8N(Plen Location ~~ Fro~ectName Nukan Materiels East Forayttr0uarry ~ PrOJeGtT/pe Mk~i nl gTCttitlea, ~ ~ 1 _ ~ r _ pymer Tim MoPf ,.,.. , .. i,. pelaFls _ ;.,. , - - -- -~--~'_-- - - i Inspection Date: ~111001200B~ ~`~~ ~- _ , Enter Inspection Summary ~µ __ 1 1) Applicant oust duonstraia a good iaath etiort eo ineorporace floodplaan benching and construction ~i ~ 1 ool and riffle sequences into the constructed diversion Weunel wherever space and gradient silos. r'^~ ll 2) Hnergy dissipation and shoat tlov gust ba provided for the scormvacec discharges of any a:fisting RCD i utlets along Old High Point Road which a e to be tied into the constructed diversion channel. j 3) Hul tar restrietions which era applicable to YS-III streams (15A HCAC 02B .0215) gust be observed Eor ha riparian zone of the constructed tlivsrsion channel. Yhece rip rap a required !or ono:gy dissipation and scour protection, it shall be limiwd to the iniaum axes and diaensions specified by appropxiate engiaeerinq calculations. Aip rap asy only be used elov she design noraal high vats: level. Iha tip rap gust aaintain the design grade and elevation of he straea's cross-sactioa. Aip rap Dlacetl in the channel bottoa oust be inserted into the bottom metriz o a depth sutEicimt to provide the thickness of rip rap required for scour protection. The elevation of the chara'.el bottoa gust pot be increased above design grade by the placeaent of zip ray. 5) Appropriate sediaent and erosion control measures which equal or teed those outlined in the cost recant version o! Cho Horth Carolina Surface Hininq Hanusl shall be designed, installed, end maintained r oparly co assure coapliaace at all times with the Horth Carolina water quality standards tbat era .:,., i_;s.hi. ~o r, ~~. vc. rir u.~~r....a_a.a~~ir..,~.;r_ici wr~r szv nz ~.r ~v~~ar, c,.:.ta...._v. .._m,a i,rQ v r'-... ~. J- ., +`. ~ _ Flnisn ~ Cancel -~~ - ,Resat SID. INSM - ,. _. .. ~ ._- Butnmery ,. ,.,-- Pro~ectNumbar ~Z006171: ~ Yer41Dn' 1 0 1 statue: jReceiwd _,___ SWPIanLDCatlorc , !~ Pf0~8Ct Name VWcan Matenels Fa tForeytn Querly ~ PfufeCl T}pa ~'MlrJnq AclFyftlBS ~ ~~~I -. OvmeC 'Tim Knob) ~,. De{ails ''~ Inspection Date 1 bi76fIV06 ! ..~ __. _._ ~ `4 - EntatingpectlonSUmmary L7`iI[iT~--117 i1ri iL7T-a7a1 SL31r -i~~_A L, x.~-ZG F~Y:'~Y]nT~~•r-~r~-r~`~'TlLf3C0'C-3YLCICQZt~64'bT-~Sy~6ZZ rLI:. ~~.. loutlats along Old High Point Aoad which era to be tied into the constructed diversion channel. 13) Buffac restrictions which era applicable to YS-III streaas 115A HCAC 02H .D215) muse be observed for the riparian cone of the constructed diversion channel. 19) Yhera rip rap is required for energy dissipatioa end scour protection, it shall be limited to the ~miniavr area end diaensioas specified by appropriate engineering calcul ntions. Aip rep may only be used below the design normal high wstec level. The rip rap susC aaintain the design grade and elevation of the streaa's cross-section. Rip rap placed in the channel bottom must be insertetl into the bottom matrix o a depth sufficient co yrovida the thickness of rip rap required foc scour protection. Iha elevation ~01 the channel bottoa must not be increased above design grade by the placement of rip rap. '.5) Appropriate sediaent and erosion control measures which equal or ax eed chore outlined in eha most 'recent version oC Cha Horth Carolina Surface Hininq Hanunl shall be designed, installsd, and nnineainad ~. properly to assure coapliancn nt all times with the Horth Carolina water quality st entlards thne era aapplicable to Class YS-III waters ns described in 15A HCAC 02H .0215, •F:esh Surface Yacnr Quality :5c andards Eor Class YS-III Yaters". I I6) Ho stormwater runoff from the quarry operating eras is eo ba discharged into any stream. ~ ~ n r~- '_ettr ~~ r ~g~= t ,,n pro,; t V __ finish ~ '~¢ancel _, .