Loading...
HomeMy WebLinkAbout20071114 Ver 1_More Info Received_20070709LETTER OF TRANSMITTAL 5&MF. Inc 3201 Spring Forest Road (27616) P.U. Box 58069 Raleigh, NC 27658-8069 (919) 872-2660 Fax (919) 790-9827 Ms. Cynthia Van Der Wiele 401/ Express Review Oversight Unit 2321 Crabtree Blvd. Suite 250 Raleigh, NC 27604 WF. ARE SENDTNCr YOiI ^ Letter ^ Proposal ~~~ ENGINEERING -TESTING ENVIRONMENTAL SERVICES Attached ^ l Inder separate cover via ^ Draft Report ^ Plans ^ Chanee order the followine items: ^ Photoeranhs ^ Specifications COPIES DATE NO. DESCRIPTION 3 7/5(07 O and M Agreement, Figures and Plans per letter dated 7/2/07 1 - - L~ 7/6/07 -- - ~ - PCN Addendum and Lett; dated 7/2/7 - i i ~ l -- - THESE ARE TRANSMITTED as checked below: ® Forannroval ^ For vour use ^ As requested ^ For review and comment ^ FOR BIDS DiJE # ^ REMARKS Please call if you have any questions. Best Regards, 3 ~ ~ l:.ij t ' .1 ~ ,j,. ".I tt i.: .T i ° ""; ~ I I t ''~~ ~"+' .~_ ~, ., ~,~.1, _. COPY To Rossie Corwon, P.E SIGNED: /r John R. Davis, Jr. IF ENCLOSURES ARE NOT AS NOTF,D, PLF,ASE NOTIFY US AT ONCE. This Letter of Transmittal and the documents accompanying this Letter of Transmittal contain information from S&ME, Inc., which onfidential and legally privileged. The information is intended only for the use of the individual or entity named on this Letter of Transmittal. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution or the taking of any action in reliance on these documents is strictly prohibited. DATE: JOB NO.. July 6, 2007 1588-06-042 ATTENTION Ms. Cynthia Van Der Wiele RE Oxford Retail Site Buffer Permit DWQ EXP No. 07-ll l4 Granville County JUL-2-2007 17:34 FROM: DWQ-WETLRNDS 9197336893 T0: 913362888980 P:2~3 ~Q~ W a rE9~ Michaol F. Easley, Governor -Q G William ci. Ross Jr.. Secretary j ~ North 4arolina rJegartmcnt of Environment and Nafum! RC,iqurcps Q, ~ Colcen }~_ 5ullins, Din:ctor Division of Water Quality July 2, 2007 D'WQ EXP No. 07-1!114 Granville County CF1(tTlli IED MAC,: RETURN RECEIPT REQUESTED Oxford Retool Investment, LL,C Atkn: Mr. Scott Smith 23G1. South Centennial Ave. ,Aiken, 5C 29803 Subjet:t Property: Orford detail Investment, LLC Site 1tEQtJEST l; t712 MOR1E >iIVFORM,A,TION-EXPRESS REVIEW PROGRAM Dear Nlr. Smith; On July 2, 2007, the Express Review Program of the Division of Water Quality (t) WQ) received your application for the abovo referenced project. The DWQ has performed a completeness review of your submittal and determined that your application will require additional information prior to acceptance into the) xpross Review Prograrrt, Please provide the following i>formation iso that we may continue to review your project and prevent dcnia,l. of your application as required ay 15A NCAC 21:~ .0506: 1. Please provido one (1) coify of a completed PCN AddertKlum as requested in the Express Review acceptance letter. 2. As per the attached PCN ,4ddendu}xt and Stormwater Management A.pplieation Fortaa, please provide all the items that were missing from your July 2, 2007 subrt>Iiital ~lmpact maps; stormwater BMP details; BIVIP worksheets,; Q&M agreemen#s; existing conditions map with riparian buffer zones separated into Zones 1 and 2; etc.). )yease respond within fivo (5) days Qfths date of this letter by sending three (3) copies of the above information in writing. The Express Review Program. is a process that regaires all patties to participate in R titno]y manner. "Phis letter only addresses the application review and does not authorize any impacts to wetlands, waters or protected buffers. Please be aware that stay impacts requested within your application are not attthorired (at this time) by the DWQ. Please contact Lia Myott or Cynthia Van Der Wiele at {919) 733- 1786 if you have any questions regarding or would like to set up a meeting to discuss this matter. Sinew-rely, ~j~r ~' x~"Cyndi Ksroly, St er<~isor U 401 (7versighY/Exptess Review Permitting Unit CBK/lem dD9 tJverslghll Express Review Pennltling.Unil 1650 Mgh 5ervlco Center, Raleigh, North Carolina 27699-1650 2321 Crflbtroo f3ouksve~b, Suha 250, Raleigh, North Carolina 27604 Phone: 919-733-'1786 f FAX 919-x33.6693 I Intemat ht1p:!(h2o. enr.~ate. nu.us/ncwe,~~r~ds N~`" C:arolina An Equa! ppportUnl(ylAf(hmatlve Ac11on Employer ~ 30%a RecyGpdJ10~ Post Cor~Umer Paper r JUL-2-2007 17:34 FF,'Oh1:DWL~-WETLRF~lDS 9197336E93 T0: 913362888980 P:3'3 Oxford REtail 5itc Page 2 of 2 July 2, 2007 Attachineuts: PCN Addendum Express R.evlew $torrnwater Management Application Form cc: Pile cppy Melanie M.cIt;inney, S&ME, 3718 Old Battiegrpund Rd., Greensboro, NC 27410 Jnmes R. Freeland, Freeland & Kaufman, 209 West Stone Avenue, Gzeenville, SC 29609 Addendum to the Pre-Construction Notification and "Buffer Rules" Application Required for Projects Submitted Under the "Express Review Program" North Carolina Division of Water Quality Version 5.0 October 1, 2006 Email Address: 401 express@ncmail.net Purpose: To provide a detailed explanation of the information required by the Division of Water Quality in order to expedite the review of applications for 401 General Water Quality Certifications, Isolated Wetland Permits, Stream and Wetland Mitigation Plans and Riparian Buffer Approvals (Please Note: do not leave any questions unanswered or use terms such as "N/A" without an explanation). Fees: 401 Water Quality Certifications: Major (>/= 150' stream or >/= 1 acre wetlands) $2,000.00 'nor < 150' stream or < 1 acre w tlands) $1,000.00 iparian Buffer Authorization: (exclusively or in a i ion o) 2,000.00 w;'~ ~~ (~/L.¢~ Riparian Buffer Minor Variance: ,00 ~... '7 C~~r ~~ Coastal G~,n::~al "Major Variance . $1,500.00 ~-o2.~f7~_ =n~;,ied `r'Vuiiand Permit: General $1,0^r1 ~!'~ P~^ase read the entire document before ±'ampt:ny ~o determine the proper fee. Fees are ad:,u:-F ~:,, particular projects. Things to keep in mind when filling out the application: A specific answer must be provided for each question. For instance, if a numerical answer is requested then a numerical answer must be provided along with the supporting information necessary for DWQ staff to verify that the number is accurate. Likewise, if explanations are presented to justify certain responses, the explanations must be completely supported by documentation. DWQ staff cannot assume that unsupported or undocumented information is accurate. "N/A" is not an acceptable answer for any question since the DWQ Staff reviewing the application must have an opportunity to determine whether or not any requested information is pertinent. All forms, guidance, worksheets, applications, etc. used must be the current versions as posted on our web site at http://h2o.enr.state.nc.us/ncwetlands. The Express Review Program website can be found at http://h2o.enr.state.nc.us/ncwetlands/express~review.htm. Please note that it will be responsibility of the applicant or the applicant's consultant to verify that the current versions are used. The versions posted on our web site will be considered to be the current versions. You are a very important part of the success of this program, if you have suggestions or clarifications please send your comments to the Wetlands/401 Unit of the DWQ (via email at 401 express@ncmail.net). Filling Out the Pre-Construction Notification Application: The Corps of Engineers (USAGE)/DWQ official, joint Pre-Construction Notification (PCN) Application must be used as a basis for the expedited review process. The completed application should be presented first and the supporting information tabbed and collated in the same order. Using a custom format is not recommended. The open squares Q) are checklist items. The following items correspond to the numbering system on the Pre-Construction Notification Form (PCN): IMPORTANT: USE CHECK BOXES TD TRACK PROJECT 1NFORMATIONII SECTION I. PROCESSING [~ 1 8~ 2.The USACE determines which Nationwide, Regional, or General Permit is required. If you have verified with the USACE which permit they intend to use for your project or if you already have written approval from the USACE, please indicate by adding "verified" or "verified, attached", respectively, in the blank next to the Permit number requested. ~~ r\(bT R.~~ul l~6 VJ¢i TTeN (WT~1 Acfl110fV Tt~ ^ Attach the USACE Approval if you have it. t,1S ftC-~ ^ ~, It is not anticipated that the expedited process will be requested for this situation. ^ ~, If you propose to impact 150 feet or more of perennial stream or 1 acre or more oqf wetland and onsite mitigation is not proposed, it is recommended that you ~p ~~either locate an acceptable private bank with available credits (with ~~ ~.~cumentation to show that the bank can and shall provide the credits needed) ~~~-~ or obtain approval from the EEP for the entire amount of stream and or wetland ~"`' as DWQ will make the final determination as to whether or not mitigation applies. A complete Express application is not considered received unless an EEP approval letter is attached if mitigation is requested through EEP. Please note that the USACE may have different mitigation requirements and thresholds. ^ ~ State whether your project will require a CAMA Minor, Major or General Permit and give the status of the permit. Dpi -uCT' (ZEquLtRE ~V{1(V)(~ QEl~ft-{~ SECTION II - APPLICATION INFORMATION 1. 15 NCAC 2H .502(fl reads as follows: "Who Must Sign Applications. The application shall be considered a "valid application" only if the application bears the signature of a responsible officer of the company, municipal official, partner or owner. This signature certifies that the applicant has title to the property, has been authorized by the owner to apply for certification or is a public entity and has the power of eminent domain. Said official in signing the application shall also certify that all information contained therein or in support thereof is true and correct to the best of his/her knowledge." Please indicate how the applicant meets the above definition and provide /supporting documentation. ^ptJ ~j Please provide all of the requested contact information including a fax ~` / number and email address. ~~(1~-('~~. [~ If the application is not signed by the applicant, please attach the agent authorization letter. The applicant must sign the agent authorization letter. The applicant's name and position must also be spelled out as many signatures are difficult to read. ~(,\V 3. E3 Please provide all of the requested contact information including a fax number and ~ email address. SECTION III -PROJECT INFORMATION The following is the most critical of all the information that you must provide. The quality and detail of the information will often determine the expeditiousness of the review. The following is a checklist of the types of pertinent information required at a minimum: 3 Maps a/nd Plans: fs~ The most recent version of the 1:24,000 USGS Topographic Map- Please cleanly delineate the site boundaries, etc. on the map. If the delineation obscures any of the features, it is recommended that a clean copy be provided. Please indicate the quadrangle name. You can go to the USGS web site (http://mac.usgs.gov/maplists/) to verify the most recent version. The most recent version of the NRCS Soil Survey Map - (required for projects within the Neuse River Basin, Tar-Pamlico River Basin, Randleman Lake Watershed and the Catawba River Basin, also recommended for all projects) -Please cleanly delineate the site boundaries, etc. on the map. If the delineation obscures any of the features, it is recommended that a clean copy be provided. Please indicate the page or map number from which the copy of the map was made. Copies of the current soil survey and/or soil survey map sheets can be obtained from the local NRCS County Office / (hitp://www.nc.nres.usda.gov/). GIS soil layers are not acceptable. N1 Vicinity map -Please clearly mark the location and approximate boundaries of the property and project on the map. Please indicate north and scale. Please include applicable road names or State Road numbers. The Site Plan -The most critical map to be provided is the site plan. You must provide full sized plans. The following is the minimum-list of plans that are typically needed. Pre-construction/Pre-existing conditions -This sheet must be scaled and include all jurisdictional and non jurisdictional wetland, stream, water features, State regulated buffers, topographic contours with elevations, approximate extent and nature of forest, field, landscaping, or other cover. Any existing structures and impervious area must be shown. Existing utility lines and easements must be ~ shown. Existing roads, culverts, and other pertinent features must be shown. North ,~~ ,~(~ arrow and the scale must be shown. Please note that the impact boundaries on the ~,sJ~ ~`-~.., iv ` maps should correspond to the flagged impact boundaries in the field. ~' e/~ ~ `~ QO ,~ C~ Proposed conditions -These sheets must be scaled and show all existing ~~ ~~ jurisdictional and non-jurisdictional wetland, stream, water features, and State regulated buffers (delineated into Zone 1 and Zone 2) must be underlain on the site ~~ ~~~ ~ plan(s). The plans must show all built-out structures and impervious cover. The Q~ ~'~ plans must include the final grading contours with elevations. The plans must Q~',~~" indicate all utilities and easements. It is likely that several versions of the final built- ~``.1Fi p~~ out site plans will be necessary. ~o~ [9' Drainage Plans - Fina{ drainage plans must be included. The plans should include the locations and pertinent elevations and sizes of the collection system and drainage ways. All inlets and outlets must also be shown with pertinent elevations. Scaled stormwater BMPs must also be indicated as required by DWQ rules and policies. In certain cases, final stormwater management plans must also be provided, but that will be addressed later in this document. f9' Plats -The plans must show the location and layout of all sub-divided parcels with lot identifications. Platted parcels must be developable without further impacts to jurisdictional and non-jurisdictional wetlands. streams, water features, and State regulated buffers. ~1 Proposed Impacts -All impacts to jurisdictional and non jurisdictional wetland, stream, water features, and State regulated buffers must be shown and labeled on the site plans. All excavation, fill, flooding, stabilization, and other impacts that will be conducted in or near jurisdictional and non-jurisdictional wetland, stream, water features, and State regulated buffers must be indicated. 4 Wetland \- y^ ~'~ Q D ^ cts (on the site plan): Pre ' e grading and final elevation ntours must be provided. Existing vegetation and any cl ring must be specified. All subsu ce utility lines m indicate the location of anti-seep collars. Construction detail for an 'seep collars st be provided. Roadway or o r cr sings of riparian wetlands may require floodway culverts to maintain existing d logical conditions. When surface ina features or groundwater recharge areas that feed or would reasonably fe wetlan that are not to be filled are made impervious, it may be necessary to irect some s rmwater runoff to those areas in order to maintain hydrology. You must i ntify these area nd address them. Supporting explanations and discharge informati must be provided t show that the wetland would not be eroded or receive too mini or too little hydrolog In many cases this could help satisfy part of a stormyy((ater management plan. Wing , ,; Stream Impacts: 2 -~I/'Y~~~ ~ ~ Stream impacts must be clearly shown on the plans. The centerline as well as the banks of the stream must be surveyed or located by GPS for the portion of the stream to be impacted. Culverting: ^ he inlet and the outlet of the culvert should be aligned with the stream as much as p ible. Inlet and outlet elevations and streambed elevations ould be indicated. ^ Any wi ing of the stream must be shown with elevatio ^ The extent o d plan details for all dissipation or de control devices should be shown with pertinent el ations. ` F n ^ ~ For shorter culvert se ions, such as for ro crossings, a longitudinal cross section that i o ~ ~ ons shows the stream bed i vert at the inlet nd outlet, the existing stream bank elevat ~ ~ and the invert of the inlet a outlet of a pipe(s) must be provided. S 0 1' ~ ,~ ~ v ~ ^ For shorter culvert sections, su s for road crossings, a vertical cross section must be ~ provided that shows the strea oss section at the inlet and outlet overlain with the culvert and fill cross section. ^ For bottomless culverts o other spans, ertical cross section should be provided that shows the minimum di ance from each s n to each stream bank, the stream cross section, the height of he span above the str m and the minimum distance from the edge of each footer each stream bank. ^ For bottomless Iverts or other spans, a plan view ust be provided that shows the location of the ans and the stream banks. ^ For longer culverts or culverts that will pass beneath substantial impervious cover, it will be necessary to provide adequate plan detail to show that discharge velocitylenergy will be adequately dissipated. ^ Cross section tails must be provided showing the provi ' ns for aquatic life passage. Aquatic life pass through culverts is typically achie d by placing the invert of the culvert below the exi 'ng bed of the stream per th SACE or North Carolina Wildlife Resource Commission 'delines. Other metho such as baffles may also be used. Please be aware that suc lacement may r quire the use of grade/velocity control ~~/ measures up or down stream culverts eri'i steeper streams to prevent head-cuts or ,~; streambed erosion. The culvert pla t relative to the streambed can be indicated on ~ ~~' the longitudinal profile. Grade and/v sty control measures must be indicated on the `~ ~~5~ plan view and typical designs should be pr 'ded. ~~p ^ Multiple culverts, wide culy~fts or sectioned box Iverts typically require the use of sills, off-setting or other mea~s~ to match the cross sects of the existing stream (in order to maintain stream stab'iJi4"y and provide aquatic life passa A vertical cross section of the culverts should b shown overlain with the up and do tream stream cross section including the str m flood-prone area. ^ Impacts a ociated with dam construction must indicate and enumerate all fill associated with th dam footprint, spillway and any bank stream bank stabilization. The length of stre impounded must also be indicated and enumerated. Stream Relocations: ^ Stream relocations must be conducted as specified in General Certification numbers 402 and 3404 (available on the Wetlands Unit web site}. Stream relocation plans must in de: ^ Morpho ical measurements (see Appendix 8 of the Internal Technical Guide for Stream Work in rth Carolina available on the Wetlands Unit web site) -not all of the _,,r/`~ measuremen are applicable in every instance. ~+~1?"' ^ Typical stream cro sections - Typically, a riffle cross section and a po cross section ~ that includes the ente flood prone area. The bankfull and flood pro area elevations ~n ,~P should be indicated. Si 'larly, a riffle cross section of the referenc tream(s) should be ,~ provided. ^ Plan view -Provide scaled pl s that show the location oft proposed (preferably with stationing) and the existing stre . In most instances, t. bankfull contours and flood prone area contours, in stream str tures, bank revetr~- nts/stabilization, channel plugs, planting plan, vegetation conditions, s mwater outl ~, grade controls, bridges, culverts, sewer lines, roads, fencing, and easeme lines sh Id also be provided. ^ Longitudinal Stream Profile - A scaled profile t indicates the thalweg, bankfull, and top of bank elevations should be provided for t e design and reference streams. In many cases, it will also be necessary to shq~! the ex'i~• ing land elevations for the design stream. ~ ^ Planting Plan - A planting and/or degetation management an should also be provided that makes use of appropriate; ative vegetation. The plan ould indicate the extent, density, and species of plants o be provided. ^ In-stream structure, ba k revetment/stabilization, and stormwater outlet typicals - Detailed, typical plans ould be provided for all in stream structures, ba revetments or stabilization, and s rmwater outlets. The typicals should include materials and specifications as yr' II as relative lengths, positions, and angles. ^ Sediment tr~port analysis - A sediment transport analysis should be provided based on the current, relevant, accepted practices. The sediment transport analysis should be relevant to the streambed load type and should predict bed load transport equilibrium. 6 ^ Permanent conservation easement or similar means of protection must also be provided. Other Information: !~' 1. The project should always be referred to by this name in all correspondence as well as the DWQ # once it is provided. 2. This only applies to DOT projects, which are not expected to utilize the Express Review Program. I~{Ot' DO'r Pi'~J ~~- CY 3. This should be the size of the project as identified by the USACE for 404 Permits or / by the Division of Water Quality for Buffer Approvals and Isolated Wetland Permits. ~Y 4. Please provide the name (as depicted on the USGS topographic map and DWQ Stream Classification Lists) of the nearest water body(ies) to which your project is a tributary to (e.g. 'Neuse River (Falls Lake below normal pool elevation)"). (Do not simple state "stream", "river", "ocean", "sound" or "lake".) Please provide the "stream index number" of the named water body or water body section (e.g. "27-(1)"). Also, please provide the full water quality classification (e.g. "WS-IV NSW CA") of the water body. This information can be obtained from the DWQ web site http://h2o.enr.state.nc. us/bimsiReports/reportsW B.html. D/ 5. Please state which river basin and sub-basin that your project is in (e.g. "Neuse River Basin, NEU01"). This information can be obtained from the DWQ weti site http://h2o.enr.state.nc.us/bims/Reports/reportsW B.html. 6. Conditions should also be indicated on the existing site plan where applicable. / /~hotos (including aerial photos) can be helpful in describing the existing conditions. I~ 7. You must provide an attachment that explicitly describes what the proposed project / will entail from the planning stage to final construction. [Y 8. This can be a simple explanation, but it is critically important because the purpose dictates how the no practical alternatives are reviewed. SECTION IV/- PRIOR PROJECT HISTORY D/ Please include copies of all 401 Water Quality Certifications, Isolated Wetland Permits, Buffer Approvals, USACE Permits, CAMA Permits for the site as well as a copy of the final approved, site plan. SECTION V -FUTURE PROJECT PLANS I~ For projects utilizing the express review process, all impacts both present and potential- future must be indicated. For instance, the location or configuration of platted lots sometimes suggests that future impacts will be necessary to build, access, or otherwise develop such lots. Failure to account for such potential impacts could delay or disqualify a project from the rapid review process. If you believe that the lot can be developed without impacts, but you anticipate that your assertion may be questioned, it is recommended that you provide a potential building foot print and/or grading plan to show that future impacts could be avoided. SECTION VI -PROPOSED IMPACTS TO WATER OF THE US [D~ 1. It is recommended that the individual impacts be described if there are special things to note about the impacts. Typically the most important thing is to have detailed ac/curate site plans as described above. Please make sure they are clearly labeled. 6d Please include all proposed temporary impacts. 7 ^ Also, a current, signed delineation map from the USACE should be provided (if available) and a map locating the stream origins signed by the appropriate DWQ Staff must be provided if applicable. ^ 2. Each impact to a wetland must be clearly labeled and identified on the site plan. The type of impact must be clearly stated. !f the impact is temporary, a specific plan must be described or shown as to how the wetland will be restored. Keep in mind that the USACE delineates some features as wetlands that DWQ calls streams. Please list any impacts in this table that DWQ would identify as a stream. If there is any doubt, it is recommended that the impacts be listed as streams. Please follow current DWQ policy with respect to whether a stream is perennial or not. It is recommended that you assume that a stream is perennial (unless you are positive that it is not) so if mitigation is required then the appropriate amount of mitigation would be anticipated or requested from the EEP or private bank. If the EEP or private bank has pre- approved too short of an amount of stream or if inadequate mitigation is proposed, then that situation will result in delays. ^ 3. Sometimes it is difficult to determine whether a feature is a modified natural channel or a ditch, especially in the eastern part of the State. Soils, drainage features, topography, macroinvertebrates, and similar factors, all are important for making that determination. ^ 4. Other items to address not specifically requested in the application include downstream sediment starvation, thermal pollution, low flow releases from dams, and aquatic life passage. -Other important considerations are buffer reestablishment or mitigation around ponds on buffered streams. The site plan should include the precise elevation contour of the normal pool as well as the dam footprint. Mitigation is required for wetland flooding of an acre or greater and for stream fill (if over the 150 foot threshold) under the dam footprint and any outlet stabilization. SECTION VII -AVOIDANCE AND MINIMIZATION Avoidance and minimization are critical aspects of an application particularly if you desire the application to be processed expeditiously. The following is a checklist of avoidance and minimization questions that DWQ Staff often look for in applications. Na /Are there any stream crossings at angles less than 75° or greater than 105°? ^/ Are there any stream crossings that cross two streams above or at the confluence of those streams? L\V Are there any stream, wetland, water, and/or buffer impacts other than perpendicular road crossing near the edges of the property? [~, an the stream be relocated as a natural channel design as opposed to culverted or otherwise filled? Lt/ Is any single stream crossed more than once? Can property access routes be moved or reduced to avoid stream, wetland, water, and buffer impacts? e~ an a building, parking lot, etc. be realigned to avoid impacts? ^/ Cain the site layout be reconfigured to avoid impacts? ^/ Can headwalls or steeper side slopes be used to avoid/minimize impacts? ~Y C~ a retaining wall be used to avoid/minimize impacts? Can cul de sacs be used in place of a crossing? f5' Can~lots be reshaped or have shared driveways to avoid impacts? 8 If based solely on the practicable physical possibility, the answer is "yes" to any of the above questions then you must have to provide substantial and convincing justification as to why the impacts are necessary. If the impacts are required by a local government or other agency, the claim must be supported with appropriate written documentation from the local government or other agency. Most projects typically involve the need to justify avoidance and minimization. If this information is not readily available, then the express review process may not be the appropriate venue to use. Providing alternative plans (such as plans that avoid the impact, minimize the impact and the preferred plan, similar to those used in environmental assessments) and explanations as to why the preferred plan is needed and why the alternative plans won't work are many times helpful in the no practical alternatives review. SECTION VIII -MITIGATION Mitigation for the ress Review Program, final mitigation plans mus resented up front. The final plans (except for plans at propose payment into the Ecosysteny.Er4 ancement Program (EEP), Riparian ~,~ Buffer Restoration Fund, p ' to mitigation banks, or simd~~r~iSanking instruments) must .contain detailed ~,ftJ1"~ ~ plans, specifications, calculatio and other supportin~~,da~ta that show that the appropriate mitigation will ~'~ ~ be achieved at the ratios require The design la''ns must be developed to at least the "90%" level. ~~~ Monitoring plans must be final and spe ' ' y means of permanent protection, such as apermanent, conservation easement must be provided u elect to use the EEP or a private mitigation bank, it is recommended that you request them mum pos ' mitigation amount that DWQ may require so that you will not have to get further ap val from them on s otice. The EEP and private banks are not part of the expedited review pr ss and cannot be expected to et any such deadlines. There will be no conditional expedited a ovals that require final plans at a later date. It is not recommended that innovative mitigation tech iques or greater than 10% preservation be requested as part of an expedited process. SECTION IX ~,~ ~~ If your prof equires the preparation of an environmental document under NEPA or SEPA and an ',~ ~ppproval I r h of been issued by the State Clearinghouse, then you cannot apply under the `.1'~~~`~ expedited review process. It is your responsibility to find out if such documentation is required. SECTION X There are many aspects of the Buffer Rules that must be addressed in every application, if applicable. The first and most important thing to keep in mind is that allowable activities that require written Approval from DWQ triggers a review of the entire project for compliance with the Buffer Rules. Diffuse FIQw 8~ stormwater Management: ^~//The most common issues that arise involve the requirement for diffuse flow of stormwater through riparian buffers. Basically one of three things must be indicated in regards to all "new" stormwater that is collected and subsequently discharged. First, provisions for ,~(~ diffuse flow through the protected buffer must be made. This usually involves the use of ~V ~~ ~ level spreading devices designed to the latest DWQ guidance on level spreader design, ~~ which is available on our web site. Please keep in mind that it does not matter how far a discharge point is from a buffer. The stormwater must be flowing in a diffuse manner at whatever point it eventually reaches the buffer. If the stormwater will not be flowing in a diffuse manner through the protected buffer at the point it reaches the buffer, then one of the fallowing options may be allowed; ~j/ You may provide a nitrogen removing measure such as a forested filter strip, grassed swale, stormwater wetland, etc. The measure employed should be designed according to the NC DENR Stormwater Best Management Practices Manual or other DWQ Guidance available at http://h2o.enr.state.nc.us/ncwetlands/regcert.html. After the nitrogen is treated, the / stormwater can be directly conveyed through the buffer with written DWQ approval. B' You may discharge the stormwater to an existing man-made conveyance that currently conveys stormwater through the protected buffer (assuming the conveyance was not constructed in violation of the Rules) as long as that conveyance does not need to be altered to convey the flow. Please remember that there are no other choices. The following checklist is intended to help insure that your application will not be deemed incomplete as a result of improper stormwater design. Stormwater Management (for Buffer Rules compliance only -Also, see Section XI): t~' All stormwater out-falls must be clearly shown and labeled on the site plan for projects in Buffered watersheds. List each out-fall as labeled: f~' Option 1: Level spreading devices designed to the latest DWQ Guidance, and devices that merely control velocity but do not provide diffuse flow such as rip rap dissipators are not proposed. List each of these out-falls as labeled on the site plan and provide a DWQ worksheet available at http://h2o.enrstate.nc. us/ncwetlands/regcert. htmL• Option 2: Nitrogen removing measures designed to DWQ Standards are proposed for discharges for which diffuse flow through a protected Buffer cannot be met. List each of these out-falls as labeled on the site plan and provide a DWQ worksheet available at http://h2o.enr.state.nc.us/ncwetlands/regcert.html `~f Option 3: The stormwater will be discharged to an existing man-made (not including modified natural channels) conveyance that carries the stormwater through the Buffer. The conveyance was not constructed in violation of the Buffer Rules. List each out-fall as labeled: C~ All stormwater out-fall must meet one of the options above. (Note: if you cannot check this box your application will likely not be accepted into the express review process.) Site Plans: All applications on properties with DWQ protected buffers must clearly depict the buffers and any impacts to the buffers on the site plans. The impact maps should clearly depict both zones of-the protected buffers and the proposed impact areas (provided in square feet). Surface Water & Buffer Delineations: [~ Any surface waters subject to DWQ protected buffers must be field located and accurately depicted on the site plans and impact maps. The width, dimensions and pattern of the surface water must be delineated. The surface water location must not be taken simply from a USGS map, soil survey or local municipality's map. The buffers must be measured from the surface water as required within the applicable buffer protection rule (e.g., all buffers along streams subject to the Neuse and Tar-Pamlico Buffer Rules must be measured from the "top-of-bank" of the stream and not the centerline of the stream). All streams must be surveyed or located by GPS and shown precisely on the site plans. Impact Table: 10 D/ Please provide additional impact tables that clearly state the area of impact for each corresponding impact site. Variances: ^ Projects that require a Major and/or "General" Variance will not be eligible for the use of the Express Review Program (with the exception of the Coastal General "Major" Variance. Mitigation: ^ As opposed to applications that are submitted under our regular process, final mitigation plans must be presented up front (see requirements for Section VIII above). The mitigation plans must comply with the applicable buffer mitigation rule. SECTION XI - STORMWATER Please provid a following information in regards to potential stormwater requirements: ^ The total acreage of the site. (acres) o The total built out impervious acreage (acres) ^ ~ The total area that will be disturbed (acres) ^ ~ ^ If the total area exceeds 20% imperviousness, the development on the site is uniform in density, and you claim that the total impervious area is less than 30%, you must provide a complete, detailed breakdown of the assumed built-out conditions. The breakdown must ~~ be detailed enough to show that all potential impervious areas are accounted for. ^ If there are concentrated areas of development such as multi-family, commercial, cluster, club houses, etc. that exceed 30% imperviousness and the total imperviousness for the site does not exceed 30%, a stormwater management plan will likely be required for those areas that exceed 30% imperviousness. ^ stormwater management plans must be complete with a final design and an executed Operation and Maintenance Agreement. There will be no conditional stormwater approvals for the express review process that allow for approval of the final plans at a later date. Worksheets must be provided that are available at http://h2o.ehnr.state.nc.us/ncwetlands/m itresto.html. SECTION xdl -SEWAGE DISPOSAL oC~// Response must be clear and detailed. Any disposal method that suggests further impacts may be required other than those shown must be clearly addressed on the site plans. SECTION1X II t,~ Answering yes to either of these responses automatically precludes you from the express review process. SECTION XIV - SIGNATURE ~he name, position and/or title of the applicant must be in type or long hand script here with the signature. It should be the same person as described in Part II. If you have any questions about these requirements, please email the Express Review Program at 401 express@ncmail.net and include your question and phone number and the appropriate staff will respond as soon as possible. DWQ Project No. E.~G.p ~ 7- 1 l 1 I. PROJECT INFORMATION Project Name : S t•!~ PP DIVISION OF WATER QUALITY -GRASSER SWALE WORKSHEET complete the following information): 1T OXFOt7.D Contact Person: fh tGKAE L LU kV ~ Phone Number {864a 6 ~2 X41? Swale ID: Grass Swale Length 25D ~ D ft. (at least 100 ft. per tributary acre) Tributary Drainage Area O •'~S ac. (on-site and off-site drainage to the swale) Impervious Area ac. {on-site and off-site drainage to the Swale) Max. Velocty from Z Yr. Storm Max. Velocity from 10 Yr. Storm Min. side slopes _ O. ,.`~_ fps •40 fps 3; 4 ratio (2 fps max.) {3:1 min.) Steepest Effective Slope Cover Crop 1f. ' '"'REQUIRED ITEMS CHECKLIST o .014 ftlft C-t iL455 (check dams may be used) Initial in the space provided to indicate the fallowing design requirements have been met and supporting documentation is attached. tf a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and speafications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project. 1, Vegetation Plan provided on plans The underlying soils are permeable and non-compacted Swale carries only stormwater flow Water #able depth is greater than 1 foot. Plan details for the Swale provided. L. Plan details for the inlets and outlets are provided. Check dams provided. The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice annual mowing. lVI.G" 1, The operation and maintenance agreement signed and notarized by the responsible party is provided. DWQ Project No. ~X P 0 1 " 1 ~) -t' DIVISION OF WATER QUALITY -401 EXTENDED DETENTION (and POCKiET") WETLAND WORKSHEET I. PROJECT INFORMATION {please complete the following information): Project Name : SNtGPPES RT Ox FO Contact Person: 1yIlCNQEL t_t1KUs Phone Number.(&4162 X443 For projects with multiple basins, specify which basin this worksheet applies to: Permanent Pool Elevation Temporary Pool Elevation Permanent Pool Surface Area Drainage Area Impervious Area Forebay Surface Area Marsh 0"-9" Surface Area Marsh 9"-18" Surface Area Micro Pool Surface Area q-2$ Sa ft. t~-30•DD ft. q a2~a9, o sq. ft. 3.45 ac. 22•'~ ~ ac. 16~ sq. ft. _..~~ 585:0 sq. ft. sq. ft. ! ~ D20~_ sq. ft. (elevation of the orifice invert out) (elevation of the outlet stn~cture invert in) Temporary Pod Volume `) ~4, 5,2.0 cu. ft. SAlDA used 2 • S S Diameter of Orifice 6. D in II. REQUIRED REMS CHECKLIST (water surface area at permanent pool elevation) (on-site and off-site drainage to the basin) (on-site and off-site drainage to the basin) (at permanen# pool elevation approximately 15°/a)' (at permanent pool elevators approximately 35%)' (at permanent pool elevation approximately 35%)* (at permanent pool elevation approximately 15%)` (volume detained on top of the permanent pool) (surface area to drainage area ratio)' (draw down orifice diameter) Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. !f a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwaler management plan submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project The temporary pool controls runoff from the 1 inch rain. The basin side slopes are no steeper than 3:1. A planting plan for the marsh areas with plant species and densities is provided. Vegetation above the permanent pool elevation is speafied. An emergency drain is provided to drain the basin. The temporary pool draws dawn in 2 to 5 days. Sediment storage is provided in the permanent pool. A sediment disposal area is provided. Access is provided for maintenance. A site specific, signed and notarized operation and maintenance agreement is provided. The drainage area (including any offsite area) is delineated on a site plan. Access is provided for maintenance. Plan details for the wetland are provided. Plan details for the inlet and outlet are provided. _ A site specifrc operation and maintenance agreement, signed and notarized by the responsible party is provided (see http:lm2o.ehnr.state.nc.uslncwetlandsloandm.doc). ' Pocket Wetlands have different design parameters and are only assumed to remove 35°~ TSS -See pp.19and 20 of the NC DENR Stormwater BMP Manual, April 1999. 10% open water, 50°~ high marsh, 40% low marsh. ~ x,p o ~ - i ~ 1 ~} EXTENDED DETENTION WETLAND MAINTENANCE REQUIREMENTS Project Name: Shoppes at Oxford Permittee: Oxford Retail Investment, LLC Address: 2361 Centennial Avenue, Aiken, SC 29803 Phone No: 803-502-2288 Maintenance of Embankments A. Vegetation The embankment has aground cover of fescue, which if Nroperly maintained will prevent erosion of the embankment and provide an easy surface for inspection. The grass will be most difficult to obtain in the area subject to water level fluctuation below the top of the riser. Grass should be fertilized every October and April. ^ Re-Seeding -periodically re-seeding may be required to establish grass on areas where seed did not take or has been destroyed. Before seeding, fertilizer (12-12-12) should be applied at a minimum rate of 12 to 15 pounds per 1,000 SF. The seed should be evenly sewn at a rate of three pounds per 1,000 SF. The seed should be covered with soil to the depth of approximately'/". Immediately following the planting ,the area should be mulched with straw. ^ Trees & Shrubs -trees, shrubs, and other landscape vegetation should be permitted only as shown on the approved planting plan. ^ Mowing -grass mowing, brush cutting and removal of weed vegetation will be necessary for the proper maintenance of the embankment. All embankment slopes and vegetation of spillways should be mowed when the grass exceeds 8" in height. Acceptable methods include the use of weed ships or power brush cutters and mowers. ^ The soil in vegetated areas should be tested every other year and adjustments to the soil amendments be made to sustain vigorous plant growth with deep, well developed rooted systems. Aeration is recommended, particularly where sediment accumulation is likely. Use of fertilizer should be limited to the initial establishment phase for ground cover. Control of invasive, exotic plants (cattails, etc.) that would hinder the reestablishment of woody vegetation or native wetland grasses and planting should be controlled by a licensed pesticide operator in conjunction with all applicable regulations. If algae blooms begin to occur, installation of floating aerators may be required in both the main pond/constructed wetlands and forebay. (Algae blooms have not been a problem to date with the existing wet pond) "Do not mow" signs shall be placed and maintained around the perimeter of the pond/constructed wetlands surface to prevent indiscriminate mowing of the aquatic vegetation on the littoral shelf. B. Erosion Erosion occurs when the water concentrates causing failure of the vegetation or when vegetation dies and sets up the environment for rill erosion and eventually gullies from the stormwater runoff. The berm should be inspected : for these areas,... Proper care of vegetative areas that develop erosion is required to prevent more serious damage to the embankment. Rills and gullies should be filled with suitable soil compacted and then seeded. Methods approved by NCDENR should be used to properly establish the grass surface. Where eroded areas are detected, the cause of the erosion should be addressed to prevent a continued maintenance problem. Frequently problems result from the concentration of runoff to one point of the embankment crest instead of a uniform distribution of runoff. This can be corrected by reshaping the crest to more evenly distribute the runoff to areas, which are not experiencing erosion problems. The top of the berm should not be allowed to be used for pedestrian or bicycle traffic. Abutment Areas -the abutment is the line formed where the embankment fill comes into contact with the existing slope. Runoff from rainfall concentrates in these gutter areas and can reach erosive velocities because of the steep slopes. If a normal stand of grass cannot be maintained on the abutments, additional measures may be needed such as jute matting to provide for the establishment of a good ground cover. Upstream Embankment Slope -Erosion problems can develop on the upstream face of the berm due to the fluctuation of water level in the pond. This is a result of a combination of wave actions and ground saturation, which occurs from the elevated water levels. The erosion generally occurs as the water level falls and the saturated ground becomes subjected to the wave action. If erosion becomes a problem, it may necessitate the installation of a stone armoring along the zone subject to fluctuating water level. This would consist of 18" of NCDOT Class B stone for erosion control underlain with Mirifi 140 geotextile fabric. It should be centered at the point of the erosion problem and covering an area 2' above and below the approximate center of the eroded area. C. Seepage Detection -Seepage may vary in appearance from a soft wet area to a flowing spring. It may show up first as only an area where the vegetation is more lush and darker green. Cattails, reeds, mosses and other marsh vegetation often become established in a seepage area. The downstream abutment areas where the embankment fill and natural ground interface are very common locations for seepage. Also the contact between the embankment and the spillway conduit is a very common location, which is generally attributed to poor compaction around the conduit. Due to the way in which conduits are put in, this is generally most evident on the embankment slopes. The natural foundation area immediately downstream of the dam abutment should also be inspected to ensure that "piping" is not occurring underneath the embankment. "Piping" may appear as a "boil" evident as spring carries soil. The soil usually deposits around the boil area and is evident by the sedimentary deposits accompanying it. Seepage can also occur into the spillway conduit through cracks in the pipe or improperly sealed joints. These can be seen by observing the conduit when the water level is high. The movement of the water itself is not dangerous, but if soil particles ~ . are being carried with it, then it can create a shortcut for the piping of soil. This might show up on the upstream face of the embankment roughly along the line of the conduit itself. D. Cracks, Slides, Sloughing and Settlement ^ Cracks -then entire embankment should be inspected for cracks. Short, isolated cracks are usually not significant, but larger cracks (wider than '/4"), well-defined cracks indicate a serious problem. There are two types of cracks: transverse and longitudinal: Traverse cracks appear crossing the embankment and indicated difference of settlement within the embankment. These cracks provide avenues for seepage and piping could develop. Longitudinal cracks run parallel to the embankment and may signal the early stages of slide. In recently built structures, these cracks may be indicative of poor compaction or poor foundation preparation resulting in consolidation after construction. ^ Slides -Slides and slumps are serious threats to the safety of an embankment. Slides can be detected easily unless obscured by vegetation. Arch shaped cracks are indications that slides are slipping or beginning to slip. These cracks soon develop into large scarps in the slope at the top of the slide. ^ Settlement -settlement occurs both during construction and after the embankment has been completed and places in service. To a certain degree this is normal and should be experienced. It is usually the most pronounced at the location of the maximum foundation depth or embankment height. Excessive settlement will reduce the free board (elevation between the water surface and the top of the dam). Any are of excessive settlement should be restored to original elevation and condition to reduce the risk of overtopping. A relatively large amount of settlement (more than 6") within a small area could indicate serious problems in the foundation or perhaps the lower part of the embankment. Settlement accompanied by cracking often precedes failure. ^ What to do if seepage, cracks, slides or settlement are detected: If any of the above items are detected there may be signs of significant problems, which could lead, to failure of the structure. A geotechnical or civil engineer should be consulted regarding the origin of these problems and for the assessment of the appropriate solutions for the correcting item. If the professional is not immediately able to inspect the berm, then the bottom drain should be opened and the water level lowered to remove the risk of failure until a professional can observe these problems. . A. Rodent Control Generally in--this urban environment, rodents are not a problem. Rqdents such as groundhogs, muskrats, and beavers are attracted to dams and reservoirs and can be quite dangerous to structural integrity and proper performance of the embankment and spillway. Groundhog and muskrats thrive on burrowing in the manmade earth embankments, which become pathways for seepage. In the event that burrows are detected within the berm, then the rodents should be dealt with by removal. II. Maintenance of Spillways and Control Structures A. Inspection of Spillway Conduits Conduits should be inspected thoroughly twice a year. Conduits should be visually inspected by actually entering the conduit a sufficient distance between the riser structure and the outlet to check all the joints. Because the outlet works tie into street storm sewer system, catch basins and pipes. Conduit should be inspected for proper alignment (sagging), elongation and displacement at joints, cracks, leaks, surface water, surface wear, loss of protective coating, corrosion and blocking. Problems with conduits most often occur at joints and special attention should be given to them during inspection. Joints should be checked for gaps caused by elongation or settlement and loss of joint filler material. Open joints can permit erosion of the embankment material and possibly the piping of soil material through the joints. Catch basins should be checked for signs that water is seeping along the exterior surface of the pipe where it enters the catch basin. A depression in the soil surface over the pipe may be signs that soil is being removed from around the pipe. ^ What to do if problems are detected with the spillway: retain the assistance of a civil engineer or geotechnical engineer qualified the design of embankments to perform an inspection of the berm. If in doubt, lower the water surface elevation of the pond/constructed wetlands until such time as a qualified professional can perform an inspection. B. Trashracks on Outlet Structure The riser structure for this pond/constructed wetlands is the only outlet structure. The intake structure has been fitted with a trashrack to prevent debris from entering the spillway structure. Most of the runoff entering the pond/constructed wetlands comes in through grated inlets, which have essentially provided filtration of the runoff and should limit the size of the debris that enters the basin to floating debris, which will most likely pass through the trashrack. The opening between the trashrack and riser is smaller than the opening of the outlet pipe. The intent is that any debris, which passes through the trashrack, will be easily passed by the pipe outlet. Maintenance should include periodically checking. the racl; for rusted or broken sections and repairing as needed. The trashrack should be checked frequently during and after storm events to ensure that it is properly functioning and to remove accumulated debris. III. Operation A. Drains/Pumps Due to the elevations on for this pond/constructed wetland area, it will need to be drained via a portable pump that is to be kept on site. The pump should be easily accessible in case of an emergency or for repairs or maintenance. Generally, when draining the pond, it should be drained slowly. Turn on the pump to a level where a good flow of water is present but not a torrent, so that the water level can be drained over a period of 48 hours or more. Rapidly lowering the water level in the pond can cause permanent damage to the embankment and must be avoided. The pump should be tested periodically to ensure it is in good working condition. B. Record Keeping Operation of the berms and constructred wetlands should include recording of the following: ^ Semi Annual Inspection -Inspections are to be performed by a qualified registered North Carolina professional engineer, landscape architect, or surveyor. ^ Semi Annual Inspection Reports - a collection of written inspection reports should be kept on record. Inspection should be conducted annually. Copies should be provided to the owner. Observations -all observations should be recorded. Where periodic inspections are performed following sign cant rainfall events, these inspections should be logged into a Periodic inspection, Operation & Maintenance Form. ^ Other Operation Procedures -the owner should maintain a complete and up-to-date set of plans (as-built drawings) and all changes made to the berms and constructed wetlands over time should be recorded on the as- builts. C. Sedimentation and Dredging Sedimentation from establishing areas tributary to the pond/constructed wetlands will eventually result in the reduction of the retention pool and eventually will have to be removed. The frequency of this sediment removal can be reduced by ensuring that the site areas around the building be stabilized with a vegetative ground cover such that it restrains erosion. ~ This - would include a periodic application of fertilizer and other treatments ~- necessary to promote a stable groundcover and minimize sedimentation to the pond/constructed wetlands. The maintenance on this pond/constructed wetlands requires that when the sediment level (as measured from the top of the riser to the sediment pool} is within 5-feet of the top of the riser that the sediment must be removed and the original pond restored. For aesthetic purposes it may be desirable to maintain it prior to this point. Generally, the dredging process begins with the removal of as much water as possible from the deposited silt and so the material can be excavated with conventional equipment for trucking offsite. The removed material should be hauled offsite to a suitable landfill site or mounded somewhere on site and stabilized with a groundcover sufficient to restrain erosion. I, ~1C~c~ 9~-~ ~ ~ ~y ~~~e,~~(~ hereby acknowledge that t am the financially responsible party for maintenance of this detention pond. I wi11 be responsible for the performance of the maintenance as outlined above, as part of the S#ormwater Management Permit received for this project. Oxford Retail Investment, LLC A South Carolina Limited Liability Company By WRS Inc., i~ managers / Signature: ~~~~~ ~~~~eY-__ _ Date: ~~~lo? i~-~'fn.yr ~ • e~es- Its Vice President