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HomeMy WebLinkAboutSW8050309_Historical File_20070831 • pF W111. A? Michael F.Easley,Governor - William G.Ross Jr.,Secretary North Carolina Department of Environment and Natural Resources 'C Coleen Sullins, Director Division Water of Water Quality August 31, 2007 Jeff Harvell, Managing Member Juniper Creek, LLC PO Box 173 Leland NC, 28451 Subject: Approved Plan Revision Juniper Creek Stormwater Project No. SW8 050309 Brunswick County Dear Mr. Harvell: On August 31, 2007, the Wilmington Regional Office received a complete plan revision for Stormwater Management Permit Number SW8 050309. The revisions include rerouting of stormwater flow and an additional curb outlet swale. No changes to the number of lots or to the BUA per lot is proposed. It has been determined that a formal permit modification is not required for the proposed changes. We are forwarding you an approved copy of the revised plans for your files and the revised curb outlet supplement form. Please replace the old approved plan set with the new one, and replace the old curb outlet supplement with the new one. Please be aware that all terms and conditions of the permit issued on March 17, 2005, remain in full force and effect. Please also understand that the approval of this revision to the approved plans for the subject State Stormwater Permit is done on a case-by-case basis. Any other changes to this project must be approved through this Office prior to construction. The issuance of this plan revision does not preclude the permittee from complying with all other applicable statutes, rules, regulations or ordinances which may have jurisdiction over the proposed activity, and obtaining a permit or approval prior to construction. If you have any questions concerning this matter, please do not hesitate to call me at (910) 796-7215. • Sincerely, ,.//ad,GU. ,e-e-ZAA-1; Linda Lewis Environmental Engineer III ENB\arl: S:\WQS\STORMWATER\PERMIT\050309PR.aug07 cc: Don Butler, P.E., East Coast Engineering & Surveying Delaney Aycock, Brunswick County Building Inspections Linda Lewis Wilmington Regional Office Central Files NOB hCarolina Naturally North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington,NC 28405 Phone(910)796-7215 Customer Service Wilmington Regional Office Internet: www.ncwaterquality.org Fax (910)350-2004 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer—50%Recycled/10%Post Consumer Paper 6- V_ � • . ' l III. DESIGN INFORMATioN Complete the following table..If additional space is needed the information should be provided in the same format as Table 1 and attached to this form. Rainfall intensity data can be found in Appendix 8.03 of the State of North Carolina Erosion and Sediment Control Planning and Design Manual. Table 1. Swale Design Information Swale No. Drainage Impervious Grassed C Q \Tallo. Vant1111 Flow Area(ac) Area(ac) (cfs) (fps) (fps) Depth(ft) Ph 1-1 3.41 1.72 1.69 0.49 11.79 5 1.66 1 Bound-1 3.51 1.64 1.87 1.46 11.37 5 1.66 1 Ph1-2 1.50 0.77 0.73 0.49 5.25 5 1.70 1 Ph1-3 1.72 0.81 0.90 0.46 5.64 5 1.48 1 Ph1-4 0.60 0.37 0.22 0.59 2.49 5 1.66 1 Ph 1-5 0.81 0.48 0.33 0.56 3.24 5 1.66 1 Ph1-6 3.60 1.59 2.01 r 0.43 11.08 5 1.66 1 Phl-7 1.36 0.69 0.67 0.49 4.72 5 1.62 1 Ph1-8 1.24 0.87 0.37 0.50 4.44 5 1.66 1 Bound-2 0.80 0.20 0.60 0.50 2.86 5 1.66 1 Ph2-1 2.93 1.50 1.43 0.49 10.29 5 1.66 1 Ph2-1 0.87 0.47 0.40 0.52 3.19 5 1.77 1 Ph3-1 2.84 1.42 1.42 0.48 9.76 . 5 1.73 1 Ph3-2 3.90 1.70 2.21 0.43 11.90 5 1.73 1 Ph3-3 1.42 0.81 0.61 0.54 5.49 5 1.73 1 I I i i h . . Form SWU 105 Ver 3.99 Page 2 of 3 CURB AND GUTTER ANALYSIS FILE: S:1WQSISTORMWATERIEXCEL SPREADSHEETSIC841050309.aug07 PROJECT NO.: SW8 050309.aug07 First Run Date: March 17,2005 PROJECT NAME: Juniper Creek DATE: 31-Aug-07 RECEIVING STREAM Sturgeon Creek CLASS: C;Sw DRAINAGE BASIN: Cape Fear INDEX: 18-77-1 A= BY+MY i, in/hr= 7 P= B+2Y (1 +M^2)"0.5 n= 0.027 R=A/P M= 5 FLOWRATE/VELOCITY COMPUTATION Q=CiA <=.05 V=Q/A Swale# DA BUA C Q Slope Velocity (acres) (acres) (cfs) (ft/ft) (fps) PH1-1 3.41 1.72 0.55 13.20 0.005 2.36 PH 1-2 1.5 0.77 0.56 5.87 0.005 1.85 PH1-3 1.72 0.81 0.53 6.38 0.005 1.90 PH1-4 0.6 0.37 0.63 2.65 0.005 1.48 PH1-5 0.81 0.48 0.61 3.49 0.005 1.59 PH1-6 3.6 1.59 0.51 12.83 0.005 2.34 PH 1-7 1.36 0.69 0.56 5.29 0.005 1.83 PH 1-8 1.24 0.65 0.57 4.92 0.005 1.76 PH2-1 2.93 1.5 0.56 11.45 0.005 2.28 PH2-2 0.87 0.47 0.58 3.52 0.005 1.60 PH3-1 2.84 1.82 0.65 12.89 0.005 2.35 PH3-2 3.9 1.7 0.51 13.79 0.005 2.41 PH3-3 1.42 0.81 0.60 5.96 0.005 1.88 NORMAL DEPTH COMPUTATION SWALE# B Y A P R Zav Zreq PH1-1 5 0.67 5.59 11.83 0.47 3.40 3.38 PH1-2 5 0.44 3.17 9.49 0.33 1.52 1.51 PH1-3 5 0.46 3.36 9.69 0.35 1.66 1.63 PH1-4 5 0.28 1.79 7.86 0.23 0.67 0.68 PH1-5 5 0.33 2.19 8.37 0.26 0.90 0.89 PH1-6 5 0.66 5.48 11.73 0.47 3.30 3.29 PH1-7 5 0.41 2.89 9.18 0.31 1.34 1.35 PH1-8 5 0.4 2.80 9.08 0.31 1.28 1.26 PH2-1 5 0.62 5.02 11.32 0.44 2.92 2.93 PH2-2 5 0.33 2.19 8.37 0.26 0.90 0.90 PH3-1 5 0.66 5.48 11.73 0.47 3.30 3.30 PH3-2 5 0.68 5.71 11.93 0.48 3.49 3.53 PH3-3 5 0.44 3.17 9.49 0.33 1.52 1.53 GRASS COVER SPECIFIED ON PLANS: ALLOWABLE VELOCITY,fps,for slopes 0%-5%,easily erodible soil: Bermuda 5 Bluegrass 4.5 Fescue 4.5 Legume 3.5 Bahia 4.5 COMMENTS East Coast Engineering & Surveying, P.C. 11 Consulting Engineers FAX FAX FAX FAX FAX FAX FAX FAX FAX FAX FAX FAX FAX FAX FAX FAX FAX FAX FAX PAGE 1 OF I (including cover page) DATE: 08/28/2007 TO: Linda Lewis FROM Don Butler OF NC DEM of: AT Wilmington East Coast Engineering & Surveying,P.C. 4918 Main St. Shallotte,North Carolina 28459 PHONE# PHONE# 910-754-8029 FAx# (910-350-20041 FAX# 910-754-8049 SUBJECT: Juniper Creek -request meeting JJ Linda, After the meeting,we have revised the drawings and added area 8 to the curb cut form. If you need additional data,please contact us. Thanks Don \.". AUG 292007 FWArF `Ot� •� �QQG Michael F.Easley,Governor William G.Ross Jr.,Secretary r North Carolina Department of Environment and Natural Resources O 1 i Coleen H.Sullins, Director Division of Water Quality August 16, 2007 Mr. Jeff Harvell, Managing Member Juniper Creek, LLC PO Box 173 Leland, NC 28451 Subject: Request for Additional Information Stormwater Project No. SW8 050309 Juniper Creek Subdivision Brunswick County Dear Mr. Harvell: The Wilmington Regional Office received some of the previously requested information regarding the proposed plan revision to the Stormwater Management Permit for Juniper Creek Subdivision on June 6, 2007. A preliminary review of that information has determined that the plan revision is not complete. The following information is needed to continue the stormwater review 1. The revised drainage area map is incomplete: several sections of the road area are not included within any swale drainage area; there are some grading problems within those road sections; and there are many more drainage areas shown than there are swales. All of the road should be collected and directed to a curb outlet swale (not a Boundary Swale) and there should be 12 drainage areas delineated, one for each swale. 2. The flume detail does not show the sidewalk. How will runoff from the road pass under the sidewalk to get into the curb outlet swale? 3. What is happening at the end of the first cul-de-sac on the right? It appears that the rear lot line swale behind Lots 6 & 7 is being directed into and across the street to the Phase 1-5 swale. This does not appear to be appropriate drainage design. Please note that this request for additional information is in response to a preliminary review. The requested information should be received in this Office prior to September 6, 2007, or the application will be returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the application fee. If you need additional time to submit the information, please mail or fax your request for a time extension to the Division at the address and fax number at the bottom of this letter. The request must indicate the date by which you expect to submit the required information. The Division is allowed 90 days from the receipt of a completed application to issue the permit. The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject to enforcement action pursuant to NCGS 143-215.6A. 1i`VV Carol' a %ne aturall North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington,NC 28405 Phone(910)796-7215 Customer Service Wilmington Regional Office Internet- www.ncwaterquality.org Fax (910)350-2004 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer—50%Recycled/10%Post Consumer Paper Mr. Harvell August 16, 2007 Stormwater Application No. SW8 050309 Please be advised that these repeated attempts to make this application complete must come to an end. This is not a complicated project. The application will be returned as incomplete if the above items are not satisfactorily addressed within 30 days. By copy of this letter to the Brunswick County Building Inspections Department, I am informing them that this project has not yet received it's modified stormwater permit and, per the NC Department of Insurance, all building permits and Certificates of Occupancy for lots within this subdivision should be withheld pending receipt of the modified permit. Please reference the State assigned project number on all correspondence. Any original documents that need to be revised have been sent to the engineer or agent. All original documents must be returned or new originals must be provided. Copies are not acceptable. If you have any questions concerning this matter please feel free to call me at (910) 796-7301. Sincerely, Linda Lewis Environmental Engineer III ENB/arl: S:IWQS\STORMWATERIADDINFO120071050309.aug07 cc: Don Butler, P.E., East Coast Engineering Delaney Aycock, Brunswick County Building Inspections Linda Lewis Page 2 of 2 Juniper Creek SW8 050309 Subject: Juniper Creek SW8 050309 From: Linda Lewis<linda.lewis@ncmail.net> Date: Thu, 16 Aug 2007 11:01:00 -0400 To: Don Butler<dbutler@ececpa.com> Don: It isn't over yet. More comments. Linda Content-Type: application/msword 050309.aug07.doc Content-Encoding: base64 1 of 1 8/16/2007 11:01 AM East Coast Engineering &Surveying, P.C. 4918 Main Street Fax:910.754.8049 Consulting Engineer's Poet Office Box 2469 Office: 910.754.8029 Sllallotte,NC 28459 June 5,2007 Ms.Linda Lewis Environmental Engineer III Division of Water Quality 127 Cardinal Drive Extension Wilmington,NC 28405-3845 Subject:Juniper Creek Stormwater Permit SWS 050309 Brunswick County. Dear Ms.Lewis: We are enclosing the requested documents for the Juniper Creek Subdivision project. For the revision to the Supplement Form,we have included a copy of the original submittal so the amounts can be compared to the revised form and calculations.We kept the Drainage Area and Impervious areas the same as the original submittal. Also,the data on the form is consistent with the data shown on the plan. Very Truly Yours, Don Butler,PE Project Manager pc: File:0629(Juniper Creek) Jeff Harvell RECEIVED JUN 0 6 2007 BY: Juniper Creek SW8 050309 Subject: Juniper Creek SW8 050309 From: Linda Lewis<linda.lewis@ncmail.net> Date: Thu, 10 May 2007 11:37:31 -0400 To: Don Butler<dbutler@ececpa.com> Don: Please find attached my review comments regarding this plan revision. Linda Content-Type: application/msword 050309.may07.doci Content-Encoding: base64 1 of 1 5/10/2007 12:10 PM Mr. HarveII May 10, 2007 Stormwater Application No. SW8 050309 May 10, 2007 Mr. Jeff Harvell, Managing Member Juniper Creek, LLC PO Box 173 Leland, NC 28451 Subject: Request for Additional Information Stormwater Project No. SW8 050309 Juniper Creek ubdivision Brunswick County Dear Mr. Harvell: The Wilmington Regional Office received some of the previously requested information regarding the proposed plan revision to the Stormwater Management Permit for Juniper Creek Subdivision on February 26, 2007. A preliminary review of that information has determined that the plan revision is not complete. The following information is needed to continue the stormwater review: 1. Please submit the revised drainage area map which includes the revised swale drainage areas and the unchanged swale DA's. A revised drainage area map was not included with the package the Division received on February 26, 2007. 2. Please label the swale numbers consistently throughout the supplement form, calculations and plans. The plans received on April 18, 2006, show swales numbers from 1-12. The plans received on November 7, 2006 and February 26, 2007 show swale numbers comprised of the Phase number first and a sequential number after that, such as Swale 1-2, meaning Swale#2 in Phase 1. The supplement form lists only swales 1-12. 3. Please number the Phase 3 swales on the plans, consistent with the swale numbers listed on the supplement form. 4. The street section detail with sidewalk previously requested has not been added to the plan. The cul-de-sac radius is now shown in a section detail with sidewalk, as previously requested, but a street section detail with sidewalk has not been provided. Please note that this request for additional information is in response to a preliminary review. The requested information should be received in this Office prior to June 10, 2007, or the application will be returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the application fee. If you need additional time to submit the information, please mail or fax your request for a time extension to the Division at the address and fax number at the bottom of this letter. The request must indicate the date by which you expect to submit the required information. The Division is allowed 90 days from the receipt of a completed application to issue the permit. Mr. Harvell May 10, 2007 Stormwater Application No. SW8 050309 The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject to enforcement action pursuant to NCGS 143-215.6A. Please reference the State assigned project number on all correspondence. Any original documents that need to be revised have been sent to the engineer or agent. All original documents must be returned or new originals must be provided. Copies are not acceptable. If you have any questions concerning this matter please feel free to call me at (910) 796-7301. Sincerely, Linda Lewis Environmental Engineer III ENB/arl: S:1WQSISTORMWATERIADDINFO120071050309.may07 cc: Don Butler, P.E., East Coast Engineering Linda Lewis East Coast Engineering Company, P.A. Consulting Engineers 4918 Main Street Telephone: 910.754.8029 Post Office Box 2469 Fax: 910.754.8049 Shallotte.North Carolina 28459 TO Linda Lewis DATE 02/26/2007 PROJECT: Juniper Creek (by hand) SW8 050309 SUBJECT: Juniper Creek, -Plan revisions-Brunswick Co. Linda, We have changed the drawing to reflect the review letter of Jan. 30, 2007. Also we have changed the curb outlet supplement. Calculations have been included along with a narrative. We have shown the drainage areas for Phase 3 as previously approved, and no changes in Phase 3 have been made. All the stormwater flow is now going to the swale adjacent to the end cul-de-sac and a detail has been added to show the curb cut and pipes. The previously approved road detail is now shown on this sheet. The swale detail now shows 5 foot for the bottom section. The sidewalks previously shown are now included on this sheet.No additional sidewalks are planned from what was originally permitted. The cul-de-sac radius is now shown on the cul-de-sac and in the detail. The curb outlet form has been revised to include this area. The area for Phase 3 is included and has not been changed from what was first permitted. If you need additional information, please contact us. don ( U Stormwater Narrative Phase 2 Juniper Creek The previous design had part of the flow going out of the curb cut at the end of the cul-de-sac and the remainder along to a swale back of the lots 63 and 64.This revision combines all the flow to one curb cut swale. The total for Phase 2 swale 2 is 0.65 cfs for the 10 year storm and 1.33 cfs for swale 3. With the existing canal at elevation 22.0,it is not possible to get the flow from the property borders to flow on the surface of the road and still make it to the canal.To lower the road might place it at the existing water table. The flow from the property border swales will flow across grassed channels and into 10"pipes and go around the cul-de-sac and discharge across riprap into the five foot wide grassed swale.The end of the cul-de- sac will have the curb cut so the water can flow across riprap and into the same-grassed Swale.The combined flow from all three sources will have a velocity of 1.06 feet per second from the 10-year storm. ••'\1\"CARP•• , ..... , ice••,, 0 94 _• .................. RECEIVED R. FEB 2 6 2007 a.l�'l0'7 DWQ , PROJ# Juniper Creek SW8 050309 Plan Revision Subject: Juniper Creek SW8 050309 Plan Revision From: Linda Lewis<linda.lewis@ncmail.net> Date: Tue, 30 Jan 2007 12:02:55 -0500 To: Don Butler<dbutler@ececpa.corn> Don: Attached please find my review comments regarding this plan revision. Linda 11 Content-Type: application/msword 050309.jan07.doci Content-Encoding: base64 1 of 1 1/30/2007 12:03 PM OF W A rFq Michael F.Easley,Governor sct Q. William G.Ross Jr.,Secretary r North Carolina Department of Environment and Natural Resources 'C Alan W.Klimek,P.E.Director r Division of Water Quality January 30, 2007 Mr. Jeff Harvell, Managing Member Juniper Creek, LLC PO Box 173 Leland, NC 28451 Subject: Request for Additional Information Stormwater Project No. SW8 050309 Juniper Creek Subdivision Brunswick County Dear Mr. Harvell: The Wilmington Regional Office received some of the previously requested information regarding the proposed plan revision to the Stormwater Management Permit for Juniper Creek Subdivision on November 7, 2006. A preliminary review of that information has determined that the plan revision is not complete. The following information is needed to continue the stormwater review: 1. In addition to the revised swale drainage areas, the new DA delineation map should also show the previously approved unchanged swale DA's. The drainage area map to be permitted with this project must show all of the swale DA's. 2. The entire cul-de-sac surrounded by Lots 59-64 should be directed into Swale PH2-2, not just half of it. If it's got curbing on it, the runoff on the other half will need to go somewhere. Please correct the drainage area map and revise the swale calculations. 3. The revised Sheet C2-C is missing the previously approved entrance road detail (referred to as "Inset B" on the previous plans.) 4. Please specify the 5' swale bottom width on the swale detail. 5. Please show the sidewalk on the street details. Only the plans approved on March 17, 2005, included road section details with a sidewalk. If sidewalk is no longer being constructed, please provide a revised Page 2 of the application, and recalculate the BUA. 6. Please specify the cul-de-sac pavement radius on the plans. 7. As previously requested, a revised curb outlet supplement will be needed to account for the Drainage Area changes. Please note that this request for additional information is in response to a preliminary review. The requested information should be received in this Office prior to March 1, 2007, or the application will be returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the application fee. I Caro a sNaturally North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington,NC 28405 Phone(910)796-7215 Customer Service Wilmington Regional Office Internet: www.ncwaterqualitv.org Fax (910)350-2004 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer-50%Recycled/10%Post Consumer Paper Mr. Harvell January 30, 2007 Stormwater Application No. SW8 050309 If you need additional time to submit the information, please mail or fax your request for a time extension to the Division at the address and fax number at the bottom of this letter. The request must indicate the date by which you expect to submit the required information. The Division is allowed 90 days from the receipt of a completed application to issue the permit. The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject to enforcement action pursuant to NCGS 143-215.6A. Please reference the State assigned project number on all correspondence. Any original documents that need to be revised have been sent to the engineer or agent. All original documents must be returned or new originals must be provided. Copies are not acceptable. If you have any questions concerning this matter please feel free to call me at (910) 796-7215. Sincerely, Linda Lewis Environmental Engineer II ENB/arl: S:IWQS\STORMWATERIADDINFO120071050309.jan07 cc: Don Butler, P.E., East Coast Engineering Linda Lewis Page 2 of 2 TLl t East Coast Irr Engineering Company,P.A. Consulting Engineers 4918 Main Street Telephone: 910.754.8029 Post Office Box 2469 Fax: 910.754.8049 Shallotte.North Carolina 28459 TO LindaLewis DATE 11/06/2006 PROJECT: Juniper Creek (,y hand) SW8 050309 ,I SUBJECT: Juniper Creek,-Plan revisions-Phase 1-2 06/1 -Brunswick Co. V C-051 Linda, We have finally gotten around to revising the plans after our earlier meeting. To recap, the imperious area is not being increased and the number of lots remains the same. This is just the switching of direction of flow after it leaves the curb cuts. The hammerhead cul-de-sac in Phase 2 has been changed as you suggested and it does eliminate some piping. However, we could not get all of the flow to go to the end of the cul-de-sac because it increases the depth too much. All swales have a five-foot bottom and side slopes of 5:1 so the velocity is really slow. No changes are made in Phase 3. Calculations are attached. One sheet has the drainage areas marked in green. G R�:Mg 14 06 09: 13a P. 1 SW&SO 307 nY Avow East Coast Engineering Company, P.A. Consulting Engineers FAX FAX FAX FAX FAX FAX FAX FAX FAX FAX FAX FAX FAX FAX FAX FAX FAX FAX FAX PAGE 1 OF 2 (including cover page) DATE: 8/14/06 TO: Linda Lewis FROM Don Butler OF of rr �� AT East Coast Engineering Company,P.A. 324 Village Road,Suite C Leland,North Carolina 28451 PHONE# PHONE# 910-371-3526 FAx a (910) 350-2004 FAX# 910-371-3448 SUBJECT: Juniper Creek Linda. We sent an email Iast month requesting a meeting and do not know if you received it. We still request a brief meeting. Attached is the email. Thanks Don Rug 14 06 09: 13a p. 2 Don Butler From: Don Buller[dbutler@ececpa.comj Sent: Tuesday,July 18,2006 10:48 AM To: Linda Lewis Cc: Jeff Harvell Subject: RE: Juniper Creek SW8 050309 ref: review letter of July 11, 2006 Linda, Juniper Creek is complicated, and difficult, both for the designer and reviewer. We have some field grade data along with the restrictions for wetlands and state property that all involve the design. We request a meeting and we can bring more data on the surrounding property lines and boundaries that are causing problems. I think it would speed up the review process. We need about 20 minutes, and I know that time is hard to get so we can meet anytime next week except Tuesday afternoon the 25th and Friday afternoon and all other times are open. Thanks, don 1 Q�W A TFi9 O� Q Michael F.Easley,Governor G William G.Ross Jr.,Secretary rNorth Carolina Department of Environment and Natural Resources a Alan W.Klimek,W.E.DQualior ty � Division of Water Quality July 11, 2006 Mr. Jeff Harvell, Managing Member Juniper Creek, LLC PO Box 173 Leland, NC 28451 Subject: Request for Additional Information Stormwater Project No. SW8 050309 Juniper Creek Subdivision Brunswick County Dear Mr. Harvell: The Wilmington Regional Office received a plan revision regarding the Stormwater Management Permit for Juniper Creek Subdivision on April 18, 2006. A preliminary review of that information has determined that the plan revision is not complete. The following information is needed to continue the stormwater review: 1. I disagree that the only changes are after the runoff leaves the curb outlet swales. Based on the flow changes shown, which appear to have caused high points and low points to be shifted, drainage areas 6, 7, 12 ,13 and 14 are all affected. 2. Are the inverts for Swale 14 correct? Based on the inverts shown on Sheet C3, it appears that Swale 14 is now flowing toward the road, instead of away from it, as previously permitted. 3. Swale 7 now appears to take in runoff from Swale 5. Drainage from Swale 5 • appears to be picked up by a new swale between the open Space and Lot 49. Stacking of swales does not meet the intent of the low density development rules. Is there a way to close off the new swale adjacent Lot 49 such that the runoff exiting Swale 5 can flow on down to the larger ditch? 4. A revised drainage area map will be needed to delineate the new drainage areas due to comments #1 and #3. 5. Revised swale calculations will be necessary to account for the Drainage Area changes. 6. A revised curb outlet supplement will be needed to account for the Drainage Area changes. Please note that this request for additional information is in response to a preliminary review. The requested information should be received in this Office prior to August 11, 2006, or the application will be returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the application fee. NatNa Caro a turall North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington,NC 28405 Phone(910)796-7215 Customer Service Wilmington Regional Office Internet: www.ncwaterqualitv.org Fax (910)350-2004 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer—50%Recycled/10%Post Consumer Paper Mr. Harvell July 11, 2006 Stormwater Application No. SW8 050309 If you need additional time to submit the information, please mail or fax your request for a time extension to the Division at the address and fax number at the bottom of this letter. The request must indicate the date by which you expect to submit the required information. The Division is allowed 90 days from the receipt of a completed application to issue the permit. The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject to enforcement action pursuant to NCGS 143-215.6A. Please reference the State assigned project number on all correspondence. Any original documents that need to be revised have been sent to the engineer or agent. All original documents must be returned or new originals must be provided. Copies are not acceptable. If you have any questions concerning this matter please feel free to call me at (910) 796-7484.-7'S35" Sincerely, ,e64 -Geir/ ) Linda Lewis Environmental Engineer ENB/arl: S:IWQS\STORMWATERIADDINFO120061050309.ju106 cc: Don Butler, P.E., East Coast Engineering Linda Lewis Page 2 of 2 T�l East Coast � Engineering Company,P.A. Consulting Engineers 4918 Main Street Telephone: 910.754.81129 Post Office Box 2469 Fax: 910 754.8049 Shallotte.North Carolina 28459 TO Linda Lewis DATE 04/18/2006 PROJECT: Juniper Creek On hand) SW8 050309 SUBJECT: Juniper Creek,-Plan revisions-Brunswick Co. Linda, In reference to your email of April 13, none of the impervious areas are changing. We have attached 2 sets of plans of the original drawings and of the changes. The changes are in the flow directions only. We are still using the same curb cuts and curb outlet swales as originally proposed. The changes come after the water leaves the ends of the curb cut swales. We included a third set of plans on which we made hand written comments to show the changes and make the review items easier to locate. When Noelle reviews the plans and visits the site,we will be glad to meet her at the site to explain the need for the changes. We also are aware of the adjacent wetlands and have avoided making the swales too deep. We are having additional surveying conducted for phases 2 and 3 to determine if a similar problem exists in those phases. If it looks like a similar situation will occur, we will contact Mr. Snowdon and you prior to construction. Thanks for your help. don APR Juniper Creek SW8 050309 Subject: Juniper Creek SW8 050309 From: Linda Lewis<linda.lewis@ncmail.net> Date: Thu, 13 Apr 2006 12:13:24 -0400 To: Don Butler<dbutler@ececpa.com> CC:Noelle Lutheran<Noelle.Lutheran@ncmail.net> Don: Regarding this modification, I think it will probably be just a plan revision, since nothing about the project's BUA or number of lots is changing. I don't have to rewrite the permit, so that should make it a plan revision. However, in order to be a plan revision, you will need to show all of the previously approved details on the current plans, such as road sections, cul-de-sacs, swale details, swale information, etc. , and submit two copies of those revised drawings. The narrative indicates that some of the swales are changing flow direction. Have you looked at the previously approved drainage areas for the curb outlet swales to make sure that they are not changing as a result of these changes? It appears that the elevation of the swales is being lowered by quite a bit (3' in one case) . I'm copying this email to Noelle Lutheran in regards to her opinion as to whether or not the swales will drain off the wetlands. The new plans appear to show roadside swales in some locations. Additionally, the sidewalk that was previously permitted is no longer shown. Is this project still utilizing curb and gutter? Is the sidewalk still being proposed? Please include this information on the plans. Thanks, Linda 1 of 1 4/13/2006 12:13 PM 71,4 East Coast 3 u3O ' C 1111' Engineering Company, P.A. Consulting Engineers 4918 Main Street Telephone: 910.754.8029 Post Office Box 2469 Fax: 910.754.8049 Shallotte.North Carolina 28459 Linda Lewis DATE 4/6/2006 SUBJECT Juniper Creek NCDENR GENTLEMEN: We are sending you: [X]Attached or Enclosed [ ] Under Separate Cover Via: _Hand Delivery ,the following items: [X] Plans [ ] Contract Documents [ ] Specifications [ ] Shop Drawings [ ] Samples [ ] Copy of Letter [ ] Reproducibles [ ] Computer Disk [ ] Other Sheet No.(s) No.Copies Date Sheet or Item Description Stormwater Plan These are Transmitted as Checked Below: []As Requested [ ]For Your Use [X]For Approval [ ]For Your Information pp���� REMARKS: , C.0'"" Attached are revised plans and an application with a review fee check and.The narrative explains the changes. (� Don Butler,PE East Coast Engineering Company, PA cc: File: 0629 (Juniper Cr) RECEIVED APR 112006 DWQ PROD# Juniper Creek .'O l v 7 Subject: Juniper Creek �`C U From: "Elizabeth Nelson" <enelson@ececpa.com> V J Date: Thu, 23 Mar 2006 09:26:19 -0500 To: "'Linda Lewis"' <linda.lewis@ncmail.net> CC: "'Don Butler"' <dbutler@ececpa.com> Linda: I spoke with Don Butler today of our Leland office, and yes he is planning to submit a stormwater permit modification for Juniper Creek. The lot layout has not changed, or the BUA per lot. However, they are making some revisions on how they want to grade the roads, and where they are directing runoff. He is in the process now of preparing that revision for submittal. If you require any additional information prior to his submittal, his email address is dbutler(D.ececpa.com. Elizabeth M. Nelson, PE A East Coast Engineering Company, PA. Shallotte,NC 28459 Phone: 910-754-8029 Fax: 910-754-8049 1 of 1 3/23/2006 11:04 AM SW8 050309 Juniper Creek Subject: SW8 050309 Juniper Creek From: Linda Lewis<linda.lewis@ncmail.net> Date: Tue, 21 Mar 2006 12:05:04 -0500 To: Elizabeth Nelson<enelson@ececpa.com> Elizabeth: I received a copy of a Notice of Receipt of Revised Erosion Control Plan on March 13, 2006. This permit was issued last year- what is the reason for this revised SEC plan, and does it impact the approved stormwater plan in any way? Linda 1 of 1 3/21/2006 12:21 PM /TA NCDENR North Carolina Department of Environment and Natural Resources Division of Land Resources James D. Simons, PG, PE Land Quality Section Michael F. Easley, Governor Director and State Geologist William G. Ross Jr.,Secretary March 10, 2006 LETTER OF RECEIPT OF REVISED EROSION CONTROL PLAN 1, Juniper Creek, LLC ,.I►�` Mr. Jeff Harvell, Member 45 " n BoxVJ ��Winnabow, NC 28479 (4e/ RE: Project Name: Juniper Creek , rC�� ,� � 1 Project ID: Bruns-2005-274 1 3 '6303 County: Brunswick MAR River Basin: Cape Fear Submitted By: East Coast Engineering BY:� Date Received by LQS: March 9, 2006 Plan Type: REVISED Dear Mr. Harvell: This office has received the revised soil erosion and sediment control plan submitted for the project listed above. G.S. 113A-54.1(a)requires that this office approve or disapprove a submitted revised plan within 15 days of receipt of such plan. Failure to act by this office within this time period shall be deemed approval of the revised plan. Commencement or continuation of a land-disturbing activity under the jurisdiction of this Act prior to the approval of an erosion and sediment control plan is a violation of the Act. We have performed a preliminary review of your submitted plan and have determined that additional information will be necessary before a final review can be completed. Enclosed is a checklist of items that must be submitted before we can complete the review process. Failure to provide the additional information may result in disapproval of your plan.Please provide calculations for new ditching,ditches as sediment traps, culverts and other measures not originally included on approved plans. The approval of an erosion and sediment control plan is conditioned on the applicant's compliance with Federal and State water quality laws, regulations and rules. If you have questions please do not hesitate to contact this office. Your cooperation in this matter is appreciated and we look forward to working with you on this project. Sincerely, 4.4 it— Schuyler J. Snowdon Land Quality Section cc: Elizabeth M. Nelson, PE, East Coast Engineering LQS—WiRO; SWS-WiRO Wilmington Regional Office 127 Cardinal Drive Extension,Wilmington,NC 28450 Phone: 910-796-7215 Fax: 910-350-2004 NORTH CAROLINA DEPARTMENT OF ENVIRONMENT & NATURAL RESOURCES - LAND QUALITY SECTION . , EROSION and SEDIMENTATION CONTROL PLAN PRELIMINARY REVIEW CHECKLIST PROJECT NAME +-i;10,'a Cr k. DATE: 3/9/0 6 PROJECT NO.: t3rkcw+S- 2005-,27q COUNTY: E v-4.+v►sw4.iC To expedite the approval process, a cursory review of your submitted Erosion and Sediment Control Plan application has been made and has shown the need for additional information as specified below. To meet our review schedule, any additional information should be received by this office no later than 3/ -'i/CGs . Failure to meet this schedule may result in disapproval of your plan. The following items shall be incorporated with respect to specific site conditions, in an erosion & sediment control plan: LOCATION INFORMATION STORMWATER CALCULATIONS ___ Project location (roads, streets, landmarks) Pre-construction runoff calculations for each outlet North arrow and scale from the site (at peak discharge points) GENERAL SITE FEATURES (Plan elements) Design calculations for peak discharges of runoff Legend: North arrow, scale, etc. (including the construction phase & the final runoff Property lines coefficients of the site) _ Existing contours (topographic lines) X Design calcs of culverts and storm sewers _ Proposed contours Discharge and velocity calculations for open channel _ Limits of •disturbed area (provide acreage total, and ditch flows(easement&right-of-ways) • delineate limits, and label) Design calcs of cross sections and method of Planned and existing building locations and elevations stabilization of existing and planned channels (include Planned& existing road locations &elevations temporary linings) Lot and/or building numbers X Design calcs and construction details of energy Geologic .features: rock outcrops, seeps, springs, dissipators below culvert and storm sewer outlets wetland and their limits, streams, lakes, ponds, dams, (diameters& apron dimensions) etc. X Design talcs and dimension of sediment basins Easements and drainageways i,{ Surface area and settling efficiency information for Profiles of streets, utilities, ditchlines, etc. proposed sediment traps and/or basins Stockpiled topsoil or subsoil locations If the same person conducts the land-disturbing activity & any VEGETATIVE STABILIZATION related borrow or waste activity, the related borrow or waste Area &acreage to be vegetatively stabilized activity shall constitute part of the land-disturbing activity unless the Method of soil preparation borrow or waste activity is regulated under the Mining Act of 1971, Seed type& rates (temporary& permanent) or is a landfill regulated by the Division of Waste Management. It Fertilizer type and rates the land-disturbing activity and any related borrow or waste activity Mulch type and rates are not conducted by the same person, they shall be considered separate land-disturbing activities and must be permitted either NOTE: Plan should include provisions for groundcover on thru the Sedimentation Pollution Control Act as a one-use borrow exposed slopes within 21 calendar days following site or through the Mining Act. completion of any phase of grading; permanent Required Army Corps 404 permit and Water Quality 401 groundcover for all disturbed areas within 21 certification(e.g.stream disturbances over 150 linear feet) calendar days following completion of EROSION CONTROL MEASURES (on plan) construction or development. Legend Location of temporary measures FINANCIAL RESPONSIBILITY/OWNERSHIP FORM Location of permanent measures Completed,signed & notarized FR/O Form Construction drawings and details for Accurate application fee ($50.00 per acre rounded up temporary and permanent measures the next acre with no ceiling amount) Maintenance requirements of measures Certificate of assumed name, if the owner is a Contact person responsible for maintenance partnership SITE DRAINAGE FEATURES Name of Registered Agent(if applicable) Existing and planned drainage patterns (include off- Copy of the most current Deed for the site site areas that drain through project) Method of determination of and calculations for NOTE: For the Express Permitting Option, inquire at the Acreage of land being disturbed local Regional Office for availability. Size and location of culverts and sewers Soil information: type, special characteristics NARRATIVE AND CONSTRUCTION SEQUENCE Soil information below culvert storm outlets Name and classification of receiving water course or _ _ Narrative describing the nature & purpose of the name of municipal operator (only where stormwater construction activity discharges are to occur) _ _ Construction sequence related to erosion and sediment control (including installation of critical measures prior to the initiation of the land-disturbing Comments: activity & removal of measures after areas they serve are permanently stabilized) Bid specifications related only to erosion control