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HomeMy WebLinkAboutNC0020842_INSTREAM ASSESSMENT_19921207NPDES DOCUMENT SCANNING COVER SHEET NPDES Permit: NC0020842 Snow Hill WWTP Document Type: Permit Issuance Wasteload Allocation Authorization to Construct (AtC) Permit Modification Speculative Limits Correspondence re: Instream Assessmen (Cluster Model) nvironmenta"1 Assessment (EA) Permit History Document Date: December 7, 1992 Thies document iB printed on reuse paper -ignore asy contest on the reverise aide - N.C. DEPT. OF ENVIRONMENT, HEALTH , AND NATURAL RESOURCES P.O. Box 27687 -� Ralcigh, N.C. 27611 Environmental Sciences Branch FAX (919) 733-9959 TELECOPY TO: FAX NUMBER- _ FROM: M 6--PHONE:. ( 1 INO. OF PAGES LNICLUDING THIS SHEET: CObLL ENTS: Lw5rV' M01764-1� W2 i. fl , t RECEIVE® DEC 0 7 1992 TECHNICAL SUPPORT BRANCH 1 I - '7 INPUTS MODEL INPLI CLUSTER ANALYSIS FOR NEUSE RIVER BASIN LEVEL �CL, GENERAL INFORMATION Facility Name: -50,j NPDES No.: Zo 2q Z�5-7/7- G C7�1f, Type of Waste: Facility Status: ex I �n')C-? Receiving Stream: Stream Classification: AJ5,111 Subbasin: County: Regional Office: Topo Quad: FLOW INFORMATION USGS # oZ,& Zoo Date of Flow Estimates: Drainage Area (n-d2): Summer 7Q10 (cfs): 3!� Winter 7Q10 (cfs): Average Flow (cfs):: 30Q2 (cfs): 27 fWC at Point of Discharge Z. 1-1 •1.0 Curnmulative fWC (%): MEMEMMEMMEM moo= MODEL INPUT INFORMATION LENGTH OF REACH (miles) INCREMENTAL LENGTH (miles) WASTE CHARACTERISTICS FLOW (MGD) CBOD (mg/1) NBOD (mg/1) D.O. (mg/1) 6 RUNOFF CHARACTERISTICS 7Q10 (cfs/nu2) C . D QA (cfs/Tni2) cE CBOD (mg/1) NBOD (mg/1) D.O. (mg/1) TRIBUTARY CHARACTERISTICS 7Q10 (cfs) 673 0.61 QA (cfs) 7 CBOD (mg/1) NBOD (mg/1) D.O. (mg/1) SLOPE (fpm) 0,7 0 .7 C. 7 -2i Name of cluster C7 . (71 CONTENTNEA CREEK NEAR HOOKERTON DATE TIME TEMP. D.O. %SAT. TEMP RANK 88/09/15 1115 23 5.2 5 88/10/20 1140 14 8.4 1 89/07/11 1210 27 4.5 10 89/08/08 1045 25 4.7 8 89/09/19 1110 23 4.9 5 90/07/26 1100 281 4.8 11 90/08/22 1005 25 5 8 90/09/24 1040 20 6.1 4 90/10/25 1040 19 5.7 3 91 /07/11 1100 28 4.4 11 91 /08/14 1000 24 4.3 7 91 /10/17 1005 16 6.8 2 � J/.4d��Io v�- STATION LOCATED BETWEEN HOOKERTON WWTP AND MAURY SANITARY DISTRICT CONTENTNEA CREEK NEAR HOOKERTON DATE TIME ITEMP. D.O. %SAT. TEMP RANK 88/09/15 1115 23 5.2 60 5 88/10/20 1140 14 8.4 81 1 89/07/11 1210 27 4.5 56 10 89/08/08 1045 25 4.7 56 8 89/09/19 1110 23 4.9 56 5 90/07/26 1100 28 4.8 61 11 90/08/22 1005 25 5 60 8 90/09/24 1040 20 6.1 661 4 90/10/25 1040 19 5.7 611 3 91/07/11 1100 28 4.4 54 11 91 /08/14 1000 24 4.3 51 7 91 /10/17-1-0-05,-161 6.8 68 2 STATION LOCATED BETWEEN HOOKERTON WWfP AND MAURY SANITARY DISTRICT SUMMER CONTENTNEA CREEK CLUSTER MODELED FOR BASINWIDE PLAN MODEL RESULTS Discharger : SNOW HILL/HOOKERTON/MAURY SANITARY DIST. Receiving Stream : CONTENTNEA CREEK ---------------------------------------------------------------------- The End D.O. is 4.50 mg/l. , The End CBOD is 0.84 mg/l. The End ---------------------------------------------------------------------- NBOD is 0.45 mg/l. WLA WLA WLA DO Min CBOD NBOD DO Waste Flow (mg/1) Milepoint Reach # (mg/1) ---- (mg/1) ---- (mg/1) -- (mgd) ---------- Segment 1 ------ 4.50 ---------------- 12.05 5 Reach 1 45.00 90.00 0.00 0.25000 Reach 2 45.00 90.00 0.00 0.06000 Reach 3 0.00 0.00 0.00 0.00000 Reach 4 45.00 90.00 0.00 0.06500 Reach 5 0.00 0.00 0.00 0.00000 SUMMER CONTENTNEA CREEK CLUSTER MODELED FOR BASINWIDE PLAN Seg # Reach # I Seg Mi I D.O. I CBOD I NBOD 1 Flow I 1 1 0.00 7.08 2.53 2.10 31.42 1 1 0.20 6.94 2.47 2.01 31.42 1 1 0.40 6.80 2.41 1.92 31.42 1 1 0.60 6.67 2.35 1.83 31.42 1 1 0.80 6.54 2.30 1.75 31.43 1 1 1.00 6.43 2.24 1.68 31.43 1 1 1.20 6.31 '2.19 1.61 31.43 1 1 1.40 6.21 2.13 1.53 31.43 1 1 1.60 6.10 2.08 1.47 31.43 1 1 1.80 6.01 2.03 1.40 31..44 1 1 2.00 5.91 1.98 1.34 31.44 1 1 2.20 5.83 1.94 1.28 31.44 1 1 2.40 5.74 1.89 1.23 31.44 1 1 2.60 5.66 1.84 1.17 31..44 1 1 2.80 5.59 1.80 1.12 31.45 1 1 3.00 5.52 1.76 1.07 31.45 1 1 3.20 5.45 1.71 1.03 31.45 1 1 3.40 5.39 1.67 0.98 31.45 1 1 3.60 5.33 1.63 0.94 31.45 1 1 3.80 5.27 1.59 0.90 31.46 1 1 4.00 5.22 1.55 0.86 31.46 1 1 4.20 5.17 1.52 0.82 31.46 1 1 4.40 5.12 1.48 0.79 31.46 1 1 4.60 5.07 1.45 0.75 31.46 1 1 4.80 5.03 1.41 0.72 31.47 1 1 5.00 4.99 1.38 0.69 31.47 1 1 5.20 4.96 1.34 0.66 31.47 1 1 5.40 4.92 1.31 0.63 31.47 .1 1 5.60 4.89 1.28 0.60 31.47 1 1 5.80 4.86 1.25 0.58 31.48 1 1 6.00 4.83 1.22 0.55 31.48 1 1 6.20 4.81 1.19 0.53 31.48 1 1 6.40 4.78 1.16 0.50 31.48 1 1 6.60 4.76 1.13 0.48 31.48 1 1 6.80 4.74 1.11 0.46 31.49 1 1 7.00 4.72 1.08 0.44 31.49 1 1 7.20 4.71 1.05 0.42 31.49 1 1 7.40 4.69 1.03 0.40 31.49 1 1 7.60 4.68 1.00 0.39 31.49 1 1 7.80 4.67 0.98 0.37 31.50 1 1 8.00 4.66 0.96 0.35 31.50 1 1 8.20 4.65 0.93 0.34 31.50 1 1 8.40 4.64 0.91 0.32 31.50 1 1 8.60 4.63 0.89 0.31 31.50 1 2 8.60 4.62 1.02 0.57 31.60 1 2 8.65 4.61 1.01 0.57 31.60 1 2 8.70 4.61 1.01 0.56 31.60 1 2 8.75 4.60 1.00 0.55 31.60 1 2 8.80 4.60 0.99 0.55 31.60 1 3 8.80 4.77 1.06 0.58 33.90 1 3 8.90 4.76 1.05 0.57 33.90 1 3 9.00 4.75 1.04 0.55 33.90 1 3 9.10 4.74 1.03 0.54 33.90 1 3 9.20 4.73 1.01 0.53 33.90 1 3 9.30 4.73 1.00 0.52 33.90 1 3 9.40 4.72 0.99 0.51 33.90 1 3 9.50 4.71 0.98 0.50 33.90 1 4 9.50 4.70 1.11 0.76 34.00 1 4 9.55 4.69 1.10 0.76 34.00 1 4 9.60 4.68 1.10 0.75 34.00 1 4 9.65 4.67 1.09 0.74 34.00 1 4 9.70 4.67 1.08 0.73 34.00 1 4 9.75 4.66 1.08 0.72 34.00 1 4 9.80 4.65 1.07 0.72 34.00 1 4 9.85 4.65 1.07 0.71 34.00 1 4 9.90 4.64 1.06 0.70 34.00 1 4 9.95 4.64 1.05 0.69 34.00 1 4 10.00 4.63 1.05 0.69 34.00 1 4 10.05 4.62 1.04 0.68 34.00 1 4 10.10 4.62 1.04 0.67 34.00 1 4 10.15 4.61 1.03 0.67 34.00 1 5 10.15 4.64 1.04 0.67 34.39 1 5 10.25 4.63 1.03 0.66 34.39 1 5 10.35 4.62 1.02 0.64 34.39 1 5 10.45 4.61 1.00 0.63 34.39 1 5 10.55 4.60 0.99 0.61 34.39 1 5 10.65 4.59 0.98 0.60 34.39 1 5 10.75 4.58 0.97 0.59 34.39 1 5 10.85 4.57 0.96 0.58 34.39 1 5 10.95 4.56 0.95 0.57 34.39 1 5 11.05 4.56 0.94 0.55 34.39 1 5 11.15 4.55 0.93 0.54 34.39 1 5 11.25 4.54 0.92 0.53 34.39 1 5 11.35 4.53 0.91 0.52 34.39 1 5 11.45 4.53 0.90 0.51 34.39 1 5 11.55 4.52 0.88 0.50 34.39 1 5 11.65 4.52 0.87 0.49 34.39 1 5 11.75 4.51 0.86 0.48 34.39 1 5 11.85 4.51 0.85 0.47 34.39 1 5 11.95 4.50 0.84 0.46 34.39 1 5 12.05 4.50 0.84 0.45 34.39 Seg # I Reach # Seg Mi I D.O. I CBOD I NBOD I Flow *** MODEL SUMMARY DATA *** Discharger : SNOW HILL/HOOKERTON/MAURY Subbasin : 030407 Receiving Stream : CONTENTNEA CREEK Stream Class: C-SW NSW Summer 7Q10 : 31. Winter 7Q10 57. Design Temperature: 27. ILENGTHI SLOPEI VELOCITY I DEPTHI Kd I Kd I Ka I Ka I KN I ---------- --------------------------------------------------------------------- I mile I ft/mil fps I ft Idesignl @20'/2 Idesignl @201/2 Idesignl Segment 1 I I 1 8.601 I 0.701 0.141 I I 1 3.86 10.28 I 1 0.20 I I 10.10 1 I 0.091 I 0.51 1 Reach 1 -------------------------------------------------------------------------------- 1 1 I 1 1 1 1 1 1 1 Segment 1 I I 1 0.201 I 0.701 0.141 I I 1 3.86 1 I 0.28 1 0.20 I I 1 0.10 1 I 0.091 I 0.51 1 Reach 2 -------------------------------------------------------------------------------- 1 1 1 1 1 I I 1 1 1 Segment 1 I I I 0.701 I 0.701 0.148 I I 1 3.91 1 I 0.28 1 0.20 I I 1 0.11 1 I 0.091 I 0.51 I Reach 3 ------------------------------ I 1 I 7------------------------------------------------- 1 1 1 1 1 1 I Segment 1 I I 1 0.651 I 0.701 0.148 I I 1 3.91 1 I 0.28 1 0.20 I I 1 0.11 I I 0.091 I 0.51 1 Reach 4 -------------------------------------------------------------------------------- 1 1 1 1 1 1 I 1 1 1 Segment 1 I I 1 1.901 I 0.701 0.149 I I 1 3.93 1 I 0.28 1 0.20 I 1 1 0.11 1 I 0.091 1 0.51 1 Reach 5 -------------------------------------------------------------------------------- 1 1 1 I 1 1 1 1 1 1 Flow I CBOD I NBOD I D.O. I cfs I mg/1 I mg/l I' mg/l Segment 1 Reach 1 Waste 1 0.388 1 45.000 1 90.000 1 0.000 Headwatersl 31.000 1 2.000 1 1.000 1 7.170 Tributary 1 0.030 1 2.000 I 1.000 1 7.170 * Runoff 1 0.010 1 2.000 1 1.000 1 7.170 Segment 1 Reach 2 Waste 0.093 1 45.000 1 90.000 1 0.000 Tributary 1 0.000 1 2.000 1 1.000 1 7.170 * Runoff I 0.000 1 2.000 1 1.000 1 7.170 Segment 1 Reach 3 Waste I 0.000 1 0.000 1 0.000 1 0.000 Tributary 1 2.300 1 2.000 1 1.000 1 7.170 * Runoff 1 0.000 1 2.000 1 1.000 1 7.170 Segment 1 Reach 4 Waste 1 0.101 1 45.000 1 90.000 1 0.000 4 . . . Tributary I 0.000 1 2.000 1 1.000 1 7.170 * Runoff I 0.000 1 2.000 1 1.000 1 7.170 Segment 1 Reach 5 Waste 1 0.000 1 0.000 1 0.000 0.000 Tributary 1 0.390 1 2.000 1 1.000 1 7.170 * Runoff 1 0.000 1 2.000 1 1.000 1 7.170 * Runoff flow is in cfs/mile SUMMER CONTENTNEA CREEK CLUSTER LIMITS OF 5/2/5 ---------- MODEL RESULTS ---------- Discharger : SNOW HILL/HOOKERTON/MAURY SANITARY DIST. Receiving Stream : CONTENTNEA CREEK ---------------------------------------------------------------------- The End D.O. is 5.64 mg/l. The End CBOD is 0.59 mg/l. The End NBOD is 0.14 mg/l. ---------------------------------------------------------------------- WLA WLA WLA DO Min CBOD NBOD DO Waste Flow (mg/1) Milepoint Reach # (mg/1) ---------------------- ---- (mg/1) ---- (mg/1) -- (mgd) ---------- Segment 1 5.58 8.80 2 Reach 1 7.50 9.00 5.00 0.25000 Reach 2 7.50 9.00 5.00 0.06000 Reach 3 0.00 0.00 0.00 0.00000 Reach 4 7.50 9.00 5.00 0.06500 Reach 5 0.00 0.00 0.00 0.00000 SUMMER CONTENTNEA CREEK LIMITS OF 5/2/5 Seg # Reach # I Seg Mi D.O. CBOD I NBOD I Flow I 1 1 0.00 7.14 2.07 1.10 31.42 1 1 0.20 7.05 2.02 1.05 31.42 1 1 0.40 6.97 1.97 1.00 31.42 1 1 0.60 6.89 1.92 0.96 31.42 1 1 0.80 6.81 1.88 0.92 31.43 1 1 1.00 6.73 1.83 0.88 31.43 1 1 1.20 6.66 1.79 0.84 31.43 1 1 1.40 6.59 1.74 0.80 31.43 1 1 1.60 6.53 1.70 0.77 31.43 1 1 1.80 6.47 1.66 0.74 31.44 1 1 2.00 6.41 1.62 0.70 31.44 1 1 2.20 6.35 1.58 0.67 31.44 1 1 2.40 6.30 1.54 0.64 31.44 1 1 2.60 6.25 1.51 0.62 31.44 1 1 2.80 6.20 1.47 0.59 31.45 1 1 3.00 6.16 1.44 0.56 31.45 1 1 3.20 6.11 1.40 0.54 31.45 1 1 3.40 6.07 1.37 0.52 31.45 1 1 3.60 6.03 1.33 0.49 31.45 1 1 3.80 6.00 1.30 0.47 31.46 1 1 4.00 5.96 1.27 0.45 31.46 1 1 4.20 5.93 1.24 0.43 31.46 1 1 4.40 5.90 1.21 0.41 31.46 1 1 4.60 5.87 1.18 .0.39 31.46 1 1 4.80 5.84 1.15 0.38 31.47 1 1 5.00 5.82 1.13 0.36 31.47 1 1 5.20 5.80 1.10 0.35 31.47 1 1 5.40 5.77 1.07 0.33 31.47 1 1 5.60 5.75 1.05 0.32 31.47 1 1 5.80 5.73 1.02 0.30 31.48 1 1 6.00 5.72 1.00 0.29 31.48 1 1 6.20 5.70 0.97 0.28 31.48 1 1 6.40 5.68 0.95 0.26 31.48 1 1 6.60 5.67 0.93 0.25 31.48 1 1 6.80 5.66 0.90 0.24 31.49 1 1 7.00 5.64 0.88 0.23 31.49 1 1 7.20 5.63 0.86 0.22 31.49 1 1 7.40 5.62 0.84 0.21 31.49 1 1 7.60 5.62 0.82 0.20 31.49 1 1 7.80 5.61 0.80 0.19 31.50 1 1 8.00 5.60 0.78 0.19 31.50 1 1 8.20 5.59 0.76 0.18 31.50 1 1 8.40 5.59 0.74 0.17 31.50 1 1 8.60 5.58 0.73 0.16 31.50 1 2 8.60 5.58 0.75 0.19 31.60 1 2 8.65 5.58 0.74 0.19 31.60 1 2 8.70 5.58 0.74 0.18 31.60 1 2 8.75 5.58 0.73 0.18 31.60 1 2 8.80 5.58 0.73 0.18 31.60 1 3 8.80 5.69 0.82 0.24 33.90 1 3 8.90 5.68 0.81 0.23 33.90 1 3 9.00 5.68 0.80 0.23 33.90 1 3 9.10 5.67 0.79 0.22 33.90 1 3 9.20 5.67 0.78 0.22 33.90 1 3 9.30 5.67 0.77 0.21 33.90 1 3 9.40 5.66 0.76 0.21 33.90 CLUSTER 1 3 9.50 5.66 0.75 0.20 33.90 1 4 9.50 5.66 0.77 0.23 34.00 1 4 9.55 5.66 0.77 0.23 34.00 1 4 9.60 5.65 0.76 0.22 34.00 1 4 9.65 5.65 0.76 0.22 34.00 1 4 9.70 5.65 0.75 0.22 34.00 1 4 9.75 5.65 0.75 0.22 34.00 1 4 9.80 5.65 0.75 0.22 34.00 1 4 9.85 5.65 0.74 0.21 34.00 1 4 9.90 5.65 0.74 0.21 34.00 1 4 9.95 5.64 0.73 0.21 34.00 1 4 10.00 5.64 0.73 0.21 34.00 1 4 10.05 5.64 0.72 0.20 34.00 1 4 10.10 5.64 0.72 0.20 34.00 1 4 10.15 5.64 0.72 0.20 34.00 1 5 10.15 5.66 0.73 0.21 34.39 1 5 10.25 5.65 0.72 0.20 34.39 1 5 10.35 5.65 0.71 0.20 34.39 1 5 10.45 5.65 0.71 0.20 34.39 1 5 10.55 5.65 0.70 0.19 34.39 1 5 10.65 5.65 0.69 0.19 34.39 1 5 10.75 5.64 0.68 0.18 34.39 1 5 10.85 5.64 0.67 0.18 34.39 1 5 10.95 5.64 0.67 0.18 34.39 1 5 11.05 5.64 0.66 0.17 34.39 1 5 11.15 5.64 0.65 0.17 34.39 1 5 11.25 5.64 0.64 0.17 34.39 1 5 11.35 5.64 0.64 0.16 34.39 1 5 11.45 5.64 0.63 0.16 34.39 1 5 11.55 5.64 0.62 0.16 34.39 1 5 11.65 5.64 0.61 0.15 34.39 1 5 11.75 5.64 0.61 0.15 34.39 1 5 11.85 5.64 0.60 0.15 34,39 1 5 11.95 5.64 0.59 0.14 34.39 1 5 12.05 5.64 0.59 0.14 34.39 Seg # I Reach # Seg Mi I D.O. CBOD NBOD I Flow *** MODEL SUMMARY DATA *** Discharger : SNOW HILL/HOOKERTON/MAURY Subbasin : 030407 Receiving Stream : CONTENTNEA CREEK Stream Class: C-SW NSW Summer 7Q10 : 31. Winter 7Q10 : 57. Design Temperature: 27. ILENGTHI SLOPEI VELOCITY I DEPTHI Kd I Kd I Ka I Ka I KN I -------------------------------------------------------------------------------- I mile I ft/mil fps I ft Idesignl @20'�o Idesignl @20;� Idesignl Segment 1 I I 1 8.601 I 0.701 0.141 I I 1 3.86 1 I 0.28 1 0.20 I I 1 0.10 1 I 0.091 I 0.51 I Reach 1 -------------------------------------------------------------------------------- 1 I 1 I I I 1 I 1 1 Segment 1 I I 1 0.201 I 0.701 0.141 I 1 1 3.86 1 1 0.28 1 0.20 1 1 1 0.10 1 1 0.091 I 0.51 1 Reach 2 -------------------------------------------------------------------------------- 1 1 1 1 1 1 1 1 1 1 Segment 1 I I 1 0.701 I 0.701 0.148 I I 1 3.91 1 I 0.28 1 0.20 I 1 1 0.11 1 1 0.091 1 0.51 1 Reach 3 -------------------------------------------------------------------------------- 1 1 1 1 1 1 1 1 1 1 Segment 1 I I 1 0.651 I 0.701 0.148 I I 1 3.91 10.28 I 1 0.20 I I 1 0.11 1 I 0.091 I 0.51 1 Reach 4 -------------------------------------------------------------------------------- 1 1 1 1 1 1 1 1 1 1 Segment 1 I I 1 1.901 I 0.701 0.149 I I 13.93 I 0.28 10.20 I I 1 0.11 1 I 0.091 I 0.51 1 Reach 5 -------------------------------------------------------------------------------- 1 1 1 I I I 1 1 1 1 I Flow I CBOD I NBOD I D.O. I cfs I mg/1 mg/l 1 mg/1 Segment 1 Reach 1 Waste 1 0.388 1 7.500 1 9.000 1 5.000 Headwaters) 31.000 I 2.000 1 1.000 1 7.170 Tributary 0.030 I 2.000 I 1.000 1 7.170 * Runoff 0.010 I 2.000 I 1.000 1 7.170 Segment 1 Reach 2 Waste 1 0.093 7.500 I 9.000 1 5.000 Tributary 1 0.000 1 2.000 1 1.000 1 7.170 * Runoff 1 0.000 2.000 1 1.000 1 7.170 Segment 1 Reach 3 Waste 1 0.000 0.000 1 0.000 1 0.000 Tributary 1 2.300 1 2.000 1 1.000 1 7.170 * Runoff 1 0.000 1 2.000 1 1.000 1 7.170 Segment 1 Reach 4 Waste 1 0.101 7.500 I 9.000 1 5.000 Tributary 1 0.000 1 2.000 1 1.000 1 7.170 * Runoff 1 0.000 1 2.000 1 1.000 1 7.170 Segment 1 Reach 5 Waste 0.000 I 0.000 1 0.000 1 0.000 Tributary 1 0.390 1 2.000 1 1.000 1 7.170 * Runoff 0.000 1 2.000 1 1.000 1 7.170 * Runoff flow is in cfs/mile 0