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Home My WebLink AboutSW8070919_Historical File_20071005coutf1por 1. Concrete Stormwater Calculations September 2007 'a SEAL 8948 .. f. ,��llllllttt��. Prepared by: East Coast Engineering & Surveying, P.C. Engineers, Planners & Surveyors Shallotte North Carolina 28459 712 Village Road SW 4918 MainStreet Office: 910.7548029 SOUTHPORT CONCRETE Wet Detention Basin Calculations Pond 1 East Coast Engineering Surveying, PC JCR Drainage Area (DA) = I 283,144 sf or 6.50 ac Impervious Area /A)= I 200,000 sf 4.59 ac Percent Impervious (!) IA/DA 0.706 or 70.6% SAIDA; 85% TSS Pond Depth = 5 1 0.03731 or 3.73% Min. req'd SA @ PP SA/DA x(DA) 10,566 sf Min. req'd storage volume Rv = 0.05 + (0.009 x 1) = 0.686 Volume = 1 in x(1 ft/ 12 in) x Rv x DA 16,179.77 cf SA provided @ PP Oval Pond Elev = 39.5 10,714 sf Enough SA provided? YES Min. storage depth req'd Min. storage volume / SA provided @ PP 1.51 ft Storage depth set at 1.5 ft Elevation of temporary pool 41 ft SA @ Temporary pool 12,861 Isf Storage volume provided Average of SA @ temp. pool & PP x storage depth 17,681.25 cf OK Outlet Sizina Q - 2 day drawdown time Min. req'd storage volume x 1 in. / 2 days) 0.094 cfs Q - 5 day drawdown time Min. req'd storage volume x 1 in. 15 days) 0.037 cfs Height h (1/2 Min. Storage Depth) 0.75 ft CD Constant 0.6 Required Area for Q-2 A = Q/ C x (2gh)' 3.23 in Required Area for Q-5 A = Q/(C x (2gh) ) 1.29 in Orifice Choosen I 2.00 in CHECK Area Provided by Orifice Choosen A = 3.14 in Area Provided by Orifice Choosen 0.022 ft The Average head h = 1/2(Temporary Pool depth - 1/2(orifice diameter)) 8.5 in The Average head 0.708 ft Q provided Q = Ca(2gh)lr2 0.088 cfs OK I o c- 2 Revision Date: 9/24/2007 SOUTHPORT CONCRETE POND VS. FOREBAY POND 1 VOLUME TO FOREBAY COMPARISON FOREBAY 2:1 SLOPE BOTTOM SF 480 SURFACE SF 1834 DEPTH 5 VOLUME 5785 '0►BE DEPTH 51 3:1 SLOPE BOTTOM SF 2800 TOP SF 6004 DEPTH 3.33 VOLUME 14659 6:1 SLOPE BOTTOM SF 6004 SURFACE SF 10714 DEPTH 1.67 VOLUME 13960 TOTAL POND VOLUME 28618 FOREBAY % OF POND 20.2% East Coast Engineering Surveying, PC JCR East Coast Engineering & Surveying, P. ( --I?. Engineers, Planners, & Surveyors September 24, 2007 Mr. Chris Baker Water Quality Section NC Department of Environment and Natural Resources 127 Cardinal Drive Extension Wilmington, North Carolina 28405-3845 Subject: Southport Concrete Shallotte, NC High Density Project — Express Submittal Dear Mr. Baker: On behalf of our client, enclosed is a submittal package for Southport Concrete located in Shallotte, NC. Our client is requesting that this application be processed with the Express Permitting Process. The project is a high density commercial project, and runoff will sheet flow from impervious surfaces to catch basins and then to a stormdrain collection system before being directed to an on - site stormwater pond. The pond is sized for 85% TSS removal and as such a treatment swale at the outlet of the pond has been provided. An express fee of $4,350.00 is being submitted to Mr. Cameron Weaver to cover the fees. The following presents the various components of the enclosed submittal package: 1. One original and one copy of the Stormwater Management PermitApp&ation Form. 2. One original and one copy of the Wet Detention Bade Supplement to the Stormwater Plan. 3. Two sets of plans to include the following sheets that are relevant to the stormwater application: Cover sheet, sheets C1 — site plan, C2 — stormwater plan/grading plan. 4. A Project Narrative, sheet 1 of 1. 5. Calculations (Sheets 1-2) If you have any questions or require any additional information, please contact our office. Sincerely, J. Christian Russell Enclosures copy: Mr. Jeff Cernugel (Southport Concrete) File: 642 (Southport Concrete) Red Apple Professional Park * 712 Village Road SW, Suite 105 Post Office Box 2469 * Shallotte, North Carolina 28459 * Tel.: 910-754-8029 * Fax: 910-754-8049 East Coast Engineering & Surveying, P �? Engineers, Planners, & Surveyors September 24, 2007 Mr. Cameron Weaver Express Permitting Officer NC Department of Environment and Natural Resources 127 Cardinal Drive Extension Wilmington, North Carolina 28405-3845 Subject: Southport Concrete Brunswick County Express Permit Dear Mr. Weaver: Enclosed is the Express Permit Fee required for Southport Concrete. This submittal is for a high - density commercial stormwater permit and an erosion control plan with 6.5 acres of disturbance. It is my understanding that an express permit fee of $4,350 is required. The breakdown of the fee is as follows: High Density Stormwater Express Fee = $4,000 (High -density, treated by wet detention pond) Erosion Control Plan = $350.00 ($50.00/acre with 6.5 acres rounded to 7.0 acres) If you have any question or require any additional information, please contact me at our office. J. Christian Russell Enclosure: Check for $4,350 copy: Jeff Cernugel Carol Miller Chris Baker File: 0732 (Southport Concrete) Red Apple Professional Park * 712 Village Road SW, Suite 105 Post Office Box 2469 * Shallotte, North Carolina 28459 * Tel.: 910-754-8029 * Fax: 910-754-8049 East Coast Engineering & Surveying, P. C. Engineers, Planners, & Surveyors Southport Concrete Shallotte, North Carolina PROJECT NARRATIVE Southport Concrete is located in Shallotte, North Carolina on Edison Road SW, approximately 1.4 mi from the north intersection of US 17 Business and US 17 Bypass in Shallotte. The total project area is 6.5 acres, and consists of a concrete plant and associated parking. Stormwater runoff will be allowed to sheet flow from to impervious surfaces and collected via catch basins. The runoff will then be routed to an onsite stormwater pond for treatment. The stormwater pond has been designed for 85% TSS removal. The outlet of the stormwater pond will be directed to a 50' vegetated swale for final treatment before being allowed to leave the project via an existing ditch on the edge of the project. 712 Village Road SW * Post Office Box 2469 * Shallotte, North Carolina 28459 * Tel.: 910-754-8029 * Fax: 910-754-8049 CDA" (51, ,, Business Corpo 8$ °' North Carolina Annual Report This report may be filed online at the Secretarw of Stma wagmii.• v e.... Name of Business Corporation: SOUTHPORT CONCRETE CORP. Fiscal Year Ending: 12 /31 /05 Mdon> C"Haer Secretary of State ID Nuriiber. 0405680 Nature of Business: RETAIL RP&W" JOHN T. CHIULLI Registered Office Mai" Address: 3710 SKYVIEK LANE SE City: SOUTHPORT Registered Office Street Address: 3710 SKMEN LAME Cdby: SOUTHPORT Signahn of New Registered Agent: (*Vwkwe condMn cameot b ar appoinhnenQ Principal Office Telephone Number: 910-457-4441 Pnnrapal Office Mading Address: 3710 SKYVIEN LANE SE City. SOUTHPORT Pnndppal Office Street Address: 3710 SKYVIEW LANE SE City: SOUTHPORT Name: John T. Chiulli Address: 3710 Skyview Lane SE City: Southport Flame: SaMUte:. ..! , Cernugel Address: 1409 Old Lamplighter Way City: Wilmington Name: Marshall Frank Address: 3376 Glen Court City: Southport SOSID: 0405680 Date Filed: 11/15/2006 8:05:00 AM Elaine F. Marshall North Carolina Secretary of State 2006 093 06823 State of Incorporation: SOUTHPORT, NC Federal Employer ID Number rfiraey Redactlon state: NC 28461 state: NC 28461 State: NC 28461 State: NC 28461 Title: President State: NC ZIP: 28461 'fine: Vice -President State: NC ZIP: 28403 Title: *wwlewr State: NC ZIP: 28461 CertiMaZnon of annual report Dust be complebd all Sadness Corporadonsi �31p�rhwror/m num he � an aeiar of eprpae/ien) _�� DoN Type a Pnni Warne idle