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HomeMy WebLinkAbout20200970 Ver 1_More Info Received_20200917Strickland, Bev From: Michael Brame <mbrame@pilotenviro.com> Sent: Thursday, September 17, 2020 10:19 AM To: David.E.Bailey2@usace.army.mil Cc: Homewood, Sue; Brian Shugart Subject: [External] RE: Request for Additional Information - Cadence s/d, North Church Street, Greensboro, Guilford County; SAW-2019-01893 Attachments: Cadence Stream Crossing 2020-09-15.pdf, Cadence Alternate Stream Crossing 2020-09-15.pdf, Cadence Drive Crossing.docx Follow Up Flag: Follow up Flag Status: Flagged External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to mkm@nc.gov Good Morning David, Attached are the Alternate Stream Crossing plans. As you can see, while the wetland impacts decrease slightly, the stream and buffer impacts are much worse with the alternate design than the original design. Also attached is a summary of the street design requirements and the impacts or the original design crossing vs. the alternate crossing. Please let me know if you need additional information. Sincerely, Michael T. Brame 336.708-4620 (c) 336.310.4527 (o) PO Box 128 Kernersville, NC 27285 www.pilotenviro.com mbrame@pilotenviro.com From: Bailey, David E CIV USARMY CESAW (USA) <David.E.Bailey2@usace.army.mil> Sent: Friday, September 11, 2020 11:12 AM To: Michael Brame <mbrame@pilotenviro.com> Cc: Subject: RE: Request for Additional Information - Cadence s/d, North Church Street, Greensboro, Guilford County; SAW- 2019-01893 Hi Michael, and thanks for the additional information. We consider items 1, 3, 4, and 5 resolved from our 8/4/2020 request for additional information. However, it appears that there was some confusion regarding item 2 in our letter. As such, I have attached a figure to show the general location referenced in this item and I will restate the question below: 1 2) The proposed road crossing is presented as necessary to access uplands for upland residential development. The need for such access is not disputed, however you have not demonstrated avoidance and minimization to the maximum extent practicable as required by NWP General Conditions 23(a) and (b). For example, it appears that the proposed road crossing could be shifted to the north, such that the northern fill slope would be placed just south of Wetland WA31-40 and the associated large meander in Stream SA, resulting in significantly reduced wetland impacts and likely similar or only slightly increased stream impacts. It appears that the road and lot design could be shifted to accommodate such a change in road alignment to still allow for a similar scale residential development. Please re -design accordingly, or provide documentation that such avoidance and minimization measures are not practicable (i.e. available and capable of being done after taking into consideration cost, existing technology, and logistics in light of overall project purposes); Also, if the above can be resolved, at the currently proposed crossing location at least 1 at -grade floodplain culvert pipe is needed to maintain a hydrological connection throughout the wetland (per NWP 29 Regional Conditions 3.6.1-3.6.3) due to the relatively wide geomorphic floodplain containing riparian wetlands. The Corps recommends that this floodplain culvert pipe be aligned with the existing overflow channel/braid on the eastern side of the proposed crossing. If item 2 above can be resolved, please provide an updated plan/profile sheet accordingly. Please submit the requested information above (via e-mail is fine) within 30 days of receipt of this Notification, and let me know if you have any questions. Sincerely, Dave Bailey David E. Bailey, PWS Regulatory Project Manager US Army Corps of Engineers CE-SAW-RG-R 3331 Heritage Trade Drive, Suite 105 Wake Forest, North Carolina 27587 Phone: (919) 554-4884, Ext. 30. Fax: (919) 562-0421 Email: David.E.Bailey2@usace.army.mil We would appreciate your feedback on how we are performing our duties. Our automated Customer Service Survey is located at: http://corpsmapu.usace.army.mil/cm apex/f?p=136:4:0 Thank you for taking the time to visit this site and complete the survey. From: Michael Brame <mbrame@pilotenviro.com> Sent: Tuesday, September 1, 2020 7:07 AM To: Bailey, David E CIV USARMY CESAW (USA) <David.E.Bailey2@usace.army.mil>; Homewood, Sue <sue.homewood@ncdenr.gov> Subject: [Non-DoD Source] RE: Request for Additional Information - Cadence s/d, North Church Street, Greensboro, Guilford County; SAW-2019-01893 Good Morning David and Sue, We were able to meet the September 1, 2020 deadline. I was not sure I was going to make it. Please find attached the applicants response to your e-mail requests for additional information for the referenced project. Please let me know if you need additional information in order to process the PCN. Thank -you. Sincerely, Michael T. Brame 336.708-4620 (c) 336.310.4527 (o) PO Box 128 Kernersville, NC 27285 www.pilotenviro.com mbrame(@r)ilotenviro.com From: Michael Brame Sent: Monday, August 31, 2020 8:10 PM To: Bailey, David E CIV USARMY CESAW (USA)<David.E.Bailey2@usace.army.mil> Subject: Re: Request for Additional Information - Cadence s/d, North Church Street, Greensboro, Guilford County; SAW- 2019-01893 Please extend the deadline to Tuesday, September 2. Thank you. Sent from my iPhone On Aug 19, 2020, at 8:34 AM, Bailey, David E CIV USARMY CESAW (USA) <David.E.Bailey2@usace.army.mil> wrote: Thanks Michael. I will extend our response deadline to September 1, 2020. -Dave Bailey David E. Bailey, PWS Regulatory Project Manager US Army Corps of Engineers CE-SAW-RG-R 3331 Heritage Trade Drive, Suite 105 Wake Forest, North Carolina 27587 Phone: (919) 554-4884, Ext. 30. Fax: (919) 562-0421 Email: David.E.Bailey2@usace.army.mil We would appreciate your feedback on how we are performing our duties. Our automated Customer Service Survey is located at: Blockedhttp://corpsmapu.usace.army.miI/cm apex/f?p=136:4:0 Thank you for taking the time to visit this site and complete the survey. From: Michael Brame <mbrame@pilotenviro.com> Sent: Tuesday, August 18, 2020 3:25 PM To: Bailey, David E CIV USARMY CESAW (USA) <David.E.Bailey2@usace.army.mil>; Homewood, Sue <sue.homewood@ncdenr.gov> Cc: Brian Shugart <brian@shugarthomes.net> Subject: [Non-DoD Source] RE: Request for Additional Information - Cadence s/d, North Church Street, Greensboro, Guilford County; SAW-2019-01893 Good Afternoon David and Sue, We are working to address the concerns. We hope to have a response within two weeks. Sincerely, <i mage003. png> Michael T. Brame 336.708-4620 (c) 336.310.4527 (o) PO Box 128 Kernersville, NC 27285 www.pilotenviro.com mbrame@pilotenviro.com From: Bailey, David E CIV USARMY CESAW (USA) <David.E.Bailey2@usace.army.mil> Sent: Tuesday, August 4, 2020 2:43 PM To: Michael Brame <mbrame@pilotenviro.com>; Brian Shugart <brian@shugarthomes.net> Cc: Homewood, Sue <sue.homewood@ncdenr.gov> Subject: RE: Request for Additional Information - Cadence s/d, North Church Street, Greensboro, Guilford County; SAW-2019-01893 Hi Michael. One other item I neglected to include in my earlier email today: 5) Given recent USFWS concerns regarding suitable Schweinitz's sunflower and small whorled pogonia habitat, please complete a pedestrian survey for these species within the Corps ESA action area. In this case, the Corps ESA action area would be contained within a 100 foot radius of the footprint of proposed impacts to waters of the US, including the currently proposed footprint and any revised footprint if project plans are changed per item # 2 in my earlier email. Following the survey, please provide the survey report to the Corps (copy also the USFWS) for review. Of course, if you do not believe that any suitable habitat exists in the Action area for these species, please provide a justification so that the corps could evaluate the potential for a No Effect determination. Please direct any questions regarding the Corps ESA action area to me. Please direct any questions regarding appropriate survey techniques and information to include in a survey report to John Ellis with the USFWS. Please let me know if you have any questions. -Dave Bailey David E. Bailey, PWS Regulatory Project Manager US Army Corps of Engineers CE-SAW-RG-R 3331 Heritage Trade Drive, Suite 105 Wake Forest, North Carolina 27587 Phone: (919) 554-4884, Ext. 30. Fax: (919) 562-0421 Email: David.E.Bailey2@usace.army.mil We would appreciate your feedback on how we are performing our duties. Our automated Customer Service Survey is located at: BlockedBlockedhttp://corpsmapu.usace.army.mil/cm apex/f?p=136:4:0 Thank you for taking the time to visit this site and complete the survey. From: Bailey, David E CIV USARMY CESAW (USA) Sent: Tuesday, August 4, 2020 2:31 PM To: Michael Brame <mbrame@pilotenviro.com>; Brian Shugart <brian@shugarthomes.net> Cc: Homewood, Sue <sue.homewood@ncdenr.gov> Subject: Request for Additional Information - Cadence s/d, North Church Street, Greensboro, Guilford County; SAW-2019-01893 on Thank you for your PCN and attached information, dated 7/27/2020, for the above referenced project. I have reviewed the information and need clarification before proceeding with verifying the use of Nationwide Permit (NWP) 29 (Blocked Blockedhttp://saw- reg.usace.army.mil/NWP2017/2017NWP29.pdf). Please submit the requested information below (via e- mail is fine) within 30 days of receipt of this Notification, otherwise we may deny verification of the use of the Nationwide Permit or consider your application withdrawn and close the file: 1) The Corps issued a Preliminary Jurisdictional Determination (PJD) for this project on 5/21/2020. In comparing the PJD map with the project plans (Sheets 1 and 2) it is clear that the location/meanders of Stream SA are shown in slightly different locations. On the PJD map, Stream SA closely aligns to the stream channel location shown in QL2 LiDAR data, while the stream location on Sheets 1 and 2 appears to miss several meanders, including meanders within the proposed Cadence Drive stream crossing. Update the stream location on Sheets 1 and 2 according to stream location data from the PJD map and update the proposed stream impacts on the plans/PCN accordingly, or confirm field conditions in this location and provide photographs showing that the stream location at the proposed crossing matches the Sheet 1 and 2 locations; 2) The proposed road crossing is presented as necessary to access uplands for upland residential development. The need for such access is not disputed, however you have not demonstrated avoidance and minimization to the maximum extent practicable as required by NWP General Conditions 23(a) and (b). For example, it appears that the proposed road crossing could be shifted to the north, such that the northern fill slope would be placed just south of Wetland WA31-40 and the associated large meander in Stream SA, resulting in significantly reduced wetland impacts and likely similar or reduced impacts to streams. It appears that the road and lot design could be shifted to accommodate such a change in road alignment to still allow for a similar scale residential development. Please re -design accordingly, or provide documentation that such avoidance and minimization measures are not practicable (i.e. available and capable of being done after taking into consideration cost, existing technology, and logistics in light of overall project purposes); 3) The rip rap pad proposed in Stream SA is considerably longer than typical for similar road crossings, nearly as long as the culvert itself. Please provide justification for a rip rap pad of this length, noting that we may consider a rip rap pad of this length as more than minimal and view these impacts as a loss of aquatic function; 4) Please provide a cross-section view of the rip rap pad to demonstrate how the feature will comply with NWP 29 Regional Condition 3.6.4 (see attached picture as an example). Please let me know if you have any questions. Sincerely, Dave Bailey David E. Bailey, PWS Regulatory Project Manager US Army Corps of Engineers CE-SAW-RG-R 3331 Heritage Trade Drive, Suite 105 Wake Forest, North Carolina 27587 Phone: (919) 554-4884, Ext. 30. Fax: (919) 562-0421 Email: David.E.Bailey2@usace.army.mil We would appreciate your feedback on how we are performing our duties. Our automated Customer Service Survey is located at: BlockedBlockedhttp://corpsmapu.usace.army.miI/cm apex/f?p=136:4:0 Thank you for taking the time to visit this site and complete the survey. x N x EXISTING WATERFALL FEATURE Iv- � 1�I / � I ► �� j� i � _ .�� \ J I I \ �\\ \ / / 111 IIII I/(� fl k111 IIII\—// IN \ _ 04 \\ / / ,� �- � � I •, y,l � . , � \. \\IIII i 1�\ � \\ � �.\\� - AFLL #4D ` l\ I Jill, (/1'1 � I 01 Vjl\ — �"� � . p � IIII �� �� — �/ / ✓/ \ � 1 \ I '\ I / I �i' // I �—_� ( (�_ `_,✓ram—�ii— \\ \ I // \\\\\�\ '\ \111�\\ \\\ \\\\1\`�� i \IN / J � \ 1 III )1 \ I I I''" � — �` \ 1 ► — � � � � \\ \ � \�� � ��\\� \ \ \\ �� �� _ TRAGT IS IN AN "AREA OF MINIMAL FLOOD HAZARD, ZONE X" PER FEMA MAP FIRM MAP 3710786cfOOJ, EFF. DATE: 6/18/2007. AND FEMA MAP FIRM MAP 3710787cIOOJ, EFF. DATE: 6/18/2007. PROPOSED GADENGE DRIVE STREAM GROSS I NC OF CALL NC ONE CALL BEFORE YOU DIG STOP DIAL 811 or 800-632-4949 AVOID U11U1Y DAMAGE SEE GADENGE DRIVE PLAN AND PROFILE VIEWS FOR LOCATIONS OF WETLANDS, FLOOD ZONES, AND BUFFERS, ����•,�N CAR .� oe' Essio ti SEAL 10727 = JUL 6, 2 20 AUGUST 26, 2020 SEPTEMBER 15, 2020 OVERALL PLAN r, ADENGE DRIVE STREAK ,l GROSSINO GADENGE SUBDIVISION 5680 CHURCH STREET CENTER GROVE TAP., OIJILFORD CO. NORTH CAROL I NA SCALE: =500 DATE: JULY 6, 2020 150 � o HUGH CREED ASSOCIATES, INC., P.A. CONSULTING ENGINEERS & LAND SURVEYORS P.O. BOX 9623 PHONE: 336 275-9826 1306 W. WENDOVER AVE. OR 336 275-8084 GREENSBORO, N.C. 27408 FIRM LICENSE #C-0551 SHEET I OF 3 E-MAIL: HCA®HUGHCREEDASSOCIATES.COM x WETLANDS WETLAND IMPACT 0.21 AGRES BUFFER IMPACT ZONE I = 5,g61 50. FT. BUFFER IMPACT ZONE 2 = 2,g84 50. FT. STREAM I MPAGT 76 LF CULVERT IMPACT I j 56 LF RIP -RAP I MPAGT 112 LF TOTAL IMPACT l� SEAL = 10727 Ln FN01 NEAR O S• :•�`,,,• V w I 0 JUL 6, 2 ;20 AUGUST 26, 2020 p- SEPTEMBER 15, 2020 STREAM GROSS I NO PLAN VIEN SCALE: 1 "=40' CALL NC ONE CALL BEFORE YOU DIG )TOP DIAL 811 or 800-632-4949 AVOID UTIIJTY DAMAGEiO PLAN VIEW GADENGE DRIVE STREAM CRO551 NO CADENCE SUED 1 V 1 S 1 ON 5680 CHURCH STREET CENTER GROVE TWP., OUILFORD CO. NORTH CAROL I NA SCALE: I"=40' DATE: JULY 6, 2020 0 20 40 &0 HUGH CREED ASSOCIATES, INC., P.A. CONSULTING ENGINEERS & LAND SURVEYORS P.O. BOX 9623 PHONE: 336 275-9826 1306 W. WENDOVER AVE. OR 336 275-8084 SHEET 2 OF 3 GREENSBORO, N.C. 27408 FIRM LICENSE #C-0551 E-MAIL: HCA®HUGHCREEDASSOCIATES.COM x r- Lu I-_ tX D_ 24" DEEP RIP -RAP LINER EXISTING GROUND CALL NC ONE CALL �`\% /i / /i��' BEFORE YOU DIG/ NOTES: 1. PRIOR TO INSTALLATION OF SANDBA® ENSURE ALLCONTRACTOR AROE ON- ////i FABRIC FILTER LAYER SITE AND READY FOR INSTALLATION. A DEWATERING WEATHER CONDITIONS SHOULD BE A DIAL 811 or PIPE MINIMUM OF FIVE DAYS AFTER ANY EMBEDDED RIP-R�i� LINER PUMP I RAIN EVENT AND NO FORECAST OF NO SGALE FLOW STREq RAIN FOR 48-HOURS AFTER 800-632-4949 STREAM DEW TERIN PIPE FLOW INSTALLATION BEGINS. TOTAL FLOW INSTALLATION TIME SHOULD BE LESS AVOID UTILITY DAMAGE THAN EIGHT HOURS. 2. INSTALL SANDBAGS TO DEWATER J� STORM RAIN TEMP. CONSTRUCTION AREA. INSTALL SANDBAG J STONE 3. INSTALL PUMP AND DEWATERING RIP -RAP DAM COFFER DAM L_j OUTLET LINES. TO STOP FLOW > _j 4. CUT OUT STREAMBED AND INSTALL Q 111 U) j RIP -RAP OUTLET WITH TOP AT CD w Q EXISTING STREAMBED LEVEL. INSTALL TEMPORARY STONE DAM LLJ CD 1L ~ o Q w 5. BEGIN ILTER PUMPINGBC. AIND CONTINUE -1 w o PUMPING DURING STORM DRAIN N. W + c(1 w 6. ICUT ADITCH IOFOR STORM DRAIN PIPE WITH BACKHOE. LAY STORM DRAIN J a V PLAN VIEW PIPE ONE FOOT BELOW STREAMBED 10 LF TEMPORARY STREAM AND INSTALL ENDWALL. T + + (�/ W Q (x I O RI T IMPACT AT THE COFFER DAM 7. IMMEDIATELY REMOVE SANDBAGS TO DIVERT FLOW THROUGH STORM W Q Q O Q DRAIN PIPE. SPREAD OUT STONE LL SANDBAG RIP RAP Z ® COFFER DAM PUMP OUTLET DAM KEEPING RIP -RAP OUTLET TEMP. LEVEL WITH EXISTING INLET PIPE STONDEWATERING PIPE DAM E� STREAMBEAD. III ()Q W W 8. SEED CONSTRUCTION SITE AS NEEDED. S 0 N 1#1 I�SMN�1 STORM DRAIN SIDE VIEW TEK=ORAR`1' STREAM GROSS I NO FOR STORM DRAIN INSTALLATION NO SCALE =o�C A ROZ�oFESsioti v e SEAL 10727 SCALE: 100 HORIZ. = 40' �,p �NGI NE�� VERT. = 4' Z. C�:�'�, XJUL 6, 20 O AUGUST 26, 2020 SEPTEMBER 15, 2020 CONTRACTOR 15 TO NOTIFY EROSION CONTROL INSPEGTOR BEFORE ANY STREAM DISTURBANGE OGGURS. FROFILE VIEW CADENCE DRIVE STREAM GROSSINO GADENGE SUE317)N I S I ON 5680 CHURCH STREET CENTER GROVE TWP., GUILFORD CO. NORTH CAROL I NA SCALE: I "=40' DATE: JULY 6, 2020 HUGH CREED ASSOCIATES, INC., P.A. CONSULTING ENGINEERS & LAND SURVEYORS P.O. BOX 9623 PHONE: 336 275-9826 1306 W. WENDOVER AVE. OR 336 275-8084 GREENSBORO, N.C. 27408 FIRM LICENSE #C-0551 SHEET 5 OF 5 E-MAIL: HCA®HUGHCREEDASSOCIATES.COM x x EXISTING WATERFALL FEATURE c J JI J I I I 1 (�- /// a \ ) / \ll \ \ �i 1111\I\I 111/ \ /I r� 10 1 \Ill II IIII IIII / I I I 1 I I il1 IIII I I l // I\ II It \I/ / // // /�/� \� � \I \\ -- / `\ 1�✓/ J \Ill ll\ / l\\\ \\ � \� � \\\\\\�cfi��i� �'\Il' 'll ) �� � \\V`t' k. Ilk ' K D LJ 0 I � � I = � Ln I 0 \ N tj I / /41 '� \ i III N I jj� -1 TRAGT IS IN AN "AREA OF MINIMAL FLOOD HAZARD, ZONE X" JPER FEMA MAP FIRM MAP 3710786clOO-1, EFF. DATE: 6/18/200-1. AND FEMA MAP FIRM MAP 371078 clOO-1, EFF. DATE: 6/18/2007. I \\\ \\ \ I Itill \ GADENGE DRIVE ALTERNATE STREAM GROSSING OF CALL NC ONE CALL BEFORE YOU DIG STOP DIAL 811 or 800-632-4949 �%,AvaD HU1Y DAMAGE/ SEE GADENGE DRIVE PLAN AND PROFILE VIEWS FOR LOGATIONS OF WETLANDS, FLOOD ZONES, AND BUFFERS, CARD<''. :gyp �oFEss/o�9 e SEAL 10727 �'•o�,Q �NGI NEB �•� � S 2 C �P�• SEPT MBER 14, 2020 OVERALL PLAN CADENCE DRIVE ALTERNATE STREAM GROSSING OADENOE SUBDIVISION 5680 CHURCH STREET CENTER GROVE TWP., CUILFORD CO. NORTH CAROL I NA SCALE: I"=500' DATE: SEPT 14, 2020 O 150 300 600 HUGH CREED ASSOCIATES, INC., P.A. CONSULTING ENGINEERS & LAND SURVEYORS P.O. BOX 9623 PHONE: 336 275-9826 1306 W. WENDOVER AVE. OR 336 275-8084 GREENSBORO, N.C. 27408 FIRM LICENSE #C-0551 E-MAIL: HCA®HUGHCREEDASSOCIATES.COM x SHEET I OF 3 x IN \ \ \ WETLANDS � Aw Ali V4ETLAND5 p�,i�/., welb .! i�,70 0-1 ►VA NETLAND IMPAGT x Flo ALIP IF "hin" WE millip walh BUFFER IMPAGT qp- All IMPAGT /,/,BUFFER og ZONE 2 ..-. i�',iii� STREAM - . - -. ♦ r i�,� i ���oi, �/I RIP -RAP IMPASO • •, , ���� ,,,�,�,�,%��i CALL NC ONE CALL BEFORE YOU DIG STOP DIAL 811 or 800-632-4949 AVOID HUTY DAMAGEill CARS"N� / / \ \ � � � / CADENCE DRIVE �oFEssio�';; l i , �. ALTERNATE 0 e SEAL < STREAM GROSSING CHURCH STREET 9 10727 _ ALTERNATE GDENGE SUED I I S I ON 680 In 5 p STREAM GROSS I NO CENTER &ROVE TWP., OUILEORD CO. '• *'/5GI NNORTH CAROLINA N ZPFLAN VIEW SCALE: I"=40' DATE: SEPT. 14, 2020 SCALE: 1"=40' 0 20 40 &0 v Lu HUGH CREED ASSOCIATES, INC., P.A. CONSULTING ENGINEERS & LAND SURVEYORS y- P.O. BOX 9623 PHONE: 336 275-9826 �i SEPT. 14, 2020 1306 W. WENDOVER AVE. OR �336� 275-8084 IL SHEET 2 OF 3 GREENSBORO, N.C. 27408 FIRM LICENSE #C-0551 E-MAIL: HCA®HUGHCREEDASSOCIATES.COM CALL NC ONE CALL BffORE YOU DIG 0 DIAL 811 or 800-632-4949 AVOID UTILITY DAMAGE ��•��N CARO/ ��=p ESS/o SEAL 10727 = :Z 2 %�pp FNGI NE�� Z. SEFTEMnER 14, 2020 FROFILE MIEN rADENGE DRIVE ?ALTERNATE STREAM GROSSING CAE)ENGE SUE317)I V I S I ON 5680 CHURCH STREI=T SCALE: CENTER GROVE 7Af OUILFORD 00. HORIZ. - 40 NORTH GAROLINA VERT. = 4' SCALE: "=40' DATE: SEFT. 14, 2020 HUGH CREED ASSOCIATES, INC., P.A. CONSULTING ENGINEERS & LAND SURVEYORS P.O. BOX 9623 PHONE: 336 275-9826 1306 W. WENDOVER AVE. OR 336 275-8084 GREENSBORO, N.C. 27408 FIRM LICENSE #C-0551 SHEET 5 OF 5 E-MAIL: HCA®HUGHCREEDASSOCIATES.COM 141 LF IY ®I.o % _ _ IN 7 1. ' ' `' _ ^�•�' �•+•�•";�•�"�4 3 LX 4 577[ - Hugh Creed Associates, Inc. P.A. Consulting Engineers & Land Surveyors 1306 W. WENDOVER AVENUE P.O. BOX 9623 GREENSBORO, N.C. 27408 GREENSBORO, N.C. 27429 TELE: (336) 275-9826 OR (336) 275-8084 FIRM LICENSE #C-0551 E-MAIL: HCA(&HUGHCREEDASSOCIATES.COM NCDOT and Guilford County have requirements for the street design as follows: Maximum grade 100' each way from an intersection cannot exceed 5%. Residential collector roads have a maximum grade of 9%, except at intersections. Rate of vertical curvature (K) is 14 at stop conditions. Rate of vertical curvature (K) is 30, except at stop conditions. Minimum horizontal centerline radius is 300' per Guilford County. There is a conceptual Alternate Crossing plan as requested by USACE using NCDOT's maximum horizontal and vertical alignments. Below is a chart showing the impacts of the Original Crossing design versus the Alternate Crossing further to the north. Stream Impacts Original Crossing Alternate Crossing Wetland Impact 0.21 Acres 0.15 Acres Buffer Impacts Zone 91 = 5,961 Sq. Ft. Zone 91 = 12,138 Sq. Ft. Zone 92 = 2,984 Sq. Ft. Zone 92 = 6,090 Sq. Ft. Stream Impacts 112 Linear Feet 207 Linear Feet Due to the depth and steep slopes of the Alternate Crossing, the buffer impacts and stream impacts will be much greater than the Original Crossing. See the attached maps. The wetlands impact will only be 0.06 acres more with the Original Crossing. Therefore, we submit that the Original Crossing of Cadence Drive has much less impact on the stream crossing than Alternate Crossing. C:\Users\bjstrickland\AppData\Local\Temp\Cadence Drive Crossing.docx_1293106\Cadence Drive Crossing.docx 1