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HomeMy WebLinkAboutNCG140309_MONITORING INFO_20180226PERMIT NO. DOC TYPE DOC DATE STORMWATER DIVISION CODING NCG PERMITS ❑ HISTORICAL FILE >(NONITORING REPORTS Vi. 2` YYYYMMDD -' ANNUAL SUMMARY DISCHARGE MONITORING REPORT DMR —WASTEWATER SUBMIT TO CENTRAL OFFICE* General Permit No. NCG140000 Calendar Year 2017 *Report ALL WASTEWATER monitoring data on this form (include "No Flow"/"No Discharge" and Limit Violations) from the previous calendar year to the DEQ by MARCH 1 of each year. Certificate of Coverage No. NCG 140309 Facility Name: Southern Concrete Materials County: Buncombe Phone Number: ( - Total no. of outfalls monitored 1 Certified Laboratory ETS Lab # 600 Lab # Wastewater (WW) Discharge Outfall No. 1 Does this outfall discharge WW to SA waters? Yes ❑ No Does this outfall discharge WW to SB or PNA waters? Yes ❑ No Does this outfall discharge WW to HQW or ORW waters? Yes ❑ No If so, what is the 7010 flow rate? or Tidally influenced waters, 7Q10 not available ❑ Does this outfall discharge WW to Trout (Tr) designated waters? Yes ❑ No Were there any limit violations in the calendar year? Yes ❑ No Outfall No. 1 Daily Flow Rate, cfs pH, Su TSS, mgll SS, mill if applicable Non -Polar 48t113 (EPA Method 1664 (SGT-HEM)), mgll Effluent Limitations Gaily Maximum Date Sample Collected, mo/ddl r NOW or ORW 50% of 7010 _ fndlca te NO FLOW if appitcatrle treshw2ter30 6.0-9.0 saltwater 6.8-8.5 OWN Standard HOW 20 HOW ! ORW and Tr, or PNA 10 . HOW, ORW, SA, SB,Palk ofany Trout � No Limit Samples aeove Benchmark subject to Ttered Responses 15 3/31/17 No flow 5/23/17 8.4 8.8 <0.1 916117 7.8 17 N A I Permit Date 811/2017 — 6/30/2022 Last Revised 8-22-2017 Certificate of Coverage No. NCG14 ©i0� CERTIFICATION " I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete, I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." (Required by 40 CFR §122.221 Signature Date gi Mail Annual Summary Wastewater DMR to the NCDEQ Central Office: Note the address is correct — Central Files is housed in DWR (not DEMLR) N.C. Department of Environmental Quality (DEQ) Division of Water Resources Attn: DWR Central Files 1617 Mail Service Center Raleigh, NC 27699-1617 Central Files Telephone (919) 807-6300 Questions? Contact DEMLR Stormwater Permitting Staff in the Central Office at: (919) 707-9220 - Permit Date 8/112017 — 6/30/2022 Last Revised 8-22-2017 PROCESS WASTEWATER — Quarterly Discharge Monitoring GENERAL PERMIT NO. NCG140000 +s CERTIFICATE OF COVERAGE NO. NCG140106 FACILITY NAME: _Southern Concrete Materials — Pond Road PERSON COLLECTING SAMPLES: _Jeff Lamm CERTIFIED LABORATORY:_ETS Lab # _600 Rogers and Calcott Lab # _27 LIMIT VIOLATIONS? YES ❑ NO Part A: Wastewater Monitoring Requirements port SAMPLE COLLECTION YEAR: V2 fi SAMPLE QUARTER: ❑Jul -Sept ❑Oct -Dec ❑Jan -March April -June COUNTY: Buncombe �"A PHONE NO. ( ADD TO LISTSERVE? ❑YES []NO EMAIL: DISCHARGING TO CLASS: []SA ❑HQW ❑PNA ❑Trout ®Other OPTIONAL INFO: Outfall No. Date Sample Collected' (mm/dd/yr) Type of Wastewater ( VE, RM, MD � pH (standard) Total Suspended Solids (mg/L) Settleable Solids (mL/L) TPH using method 1664A SGT-HEM c (mg/L) Discharge Duration (minutes) Total Flow [gallons/day}' - - - 6-93.4 3035 53 (15)6 - - 1 No Flow 1 CENTRAL FILE UVVN TION 1 If wastewater systems have not discharged in this quarter— report "No Flow" or "No Discharge" here. Please make sure to mark the sample quarter above. Z Report the abbreviation for the type of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning (VE), Raw Material Stockpiles (RM), Mixing Drum Cleanout (MD). Report more than one type if the waste -stream is commingled. 3If an effluent limit is exceeded twice in a row, the permittee is required to institute monthly monitoring for that parameter for six months, unless DWQ RO staff notifies you to continue monitoring. 4 pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saltwaters. 5 TSS limits are 20 mg/L for wastewater discharges to HQW waters, 10 mg/L for Trout and PNA waters, and 30 mg/L for all other water classifications. Permit Date: 7/1/2010-06/30/2015 Last Revised 07/13/11 Page 1 of 2 c Process.v:,'Stewater discharges shall only be monitored for TPH when commingled with stormwater discharges from VMA areas. TPH does not have a limit for wastewater, but ')stead is subject to benchmarks and provisions of Part IV, Section A, including the Tiered Response Action. Flow rate can be measured continuously or calculated. Flow limits for wastewater discharges to HQW waters shall be set to 50% of the Summer 7Q10 Flow as per 15A NCAC 02B .0224. Permittees who discharge wastewater to HQW waters shall obtain a Summer 7Q10 flow and report this information to DWQ. If the permittee cannot obtain a Summer 7Q10 flow for the receiving waters at the discharge location, the permittee shall notify DWQ, and the DWQ Regional Office may require an annual flow report on a case -by -case basis. MAIL ORIGINAL AND ONE COPY OF THIS ANNUAL SUMMARY (INCLUDING ALL "NO FLOW", "NO DISCHARGE") WITHIN 30 DAYS OF RECEIPT OF SAMPLE (OR AT END OF MONITORING PERIOD IN CASE OF "NO FLOW") TO: Division of Water Quality Attn: DWQ Central Files 1617 Mail Service Center Raleigh, North Carolina 27699-1617 (919) 807-6379 YOU MUST SIGN THIS CERTIFICATION FOR ANYlNFORMATION REPORTED: " I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." C20'.1 T/6/2016 (5ignature,of rmittee) (Date) Permit Date: 7/1/2010-06/30/2015 Last Revised 07/13/11 Page 2 of 2 STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING F,QRM GENERAL PERMIT NO. NCG140000 1 1 . CERTIFICATE OF COVERAGE NO. NCG140309 FACILITY NAME: _Southern Concrete Materials -Pond Road PERSON COLLECTING SAMPLES Jeff Lamm CERTIFIED LABORATORY ETS Lab # Lab # OPTIONAL INFO: Part A: Stormwater Monitoring Requirements SAMPLE COLLECTION YEAR: _2016_ SAMPLING PERIOD: ❑ July-Decem ® January -June e� PHONE NO. ( ) ADD TO LISTSERVE? []YES❑NO EMAIL: DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA ❑Trout ®Other Event Total In Tier 2 COUNTY Buncombe Date Sample Collected (mo/dd/yr OR NO FLOW)' pH Units) TSS (mg/L) (minutes} [in} Monthly Monitoring? (y/n) # of Months in Tier 2 Sampling2 - - 6-92 1002.3 - - - - 1 No Flow N/A N/A N/A N/A N/A N/A N/A JUL 13 2016 DWR SECTIn 1 If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above. 2 If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2 Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range. a TSS benchmark values are 100 mg/l, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/l, ° For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge. Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11 Page 1 of 2 Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year. Outfalf� , .� � Na. ., Date Sample Collected (mo/dd/yr}1 PH (Standard Units) TPH using method I654A SGT HEM (mg/L) Total Suspended Solids (mg/0 Event Duration (minutes) Total Rainfall a (in) New Motor Oil Usage (gal/month) In Tier 2 Monthly Monitoring (y/n) # of Months in Tier 2 Samplingz 6-92 1s, 1001" - - - - - N/A N/A N/A N/A N/A N/A N/A HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO Z HAVE YOU CONTACTED THE REGION? YES ❑ NO ❑ REGIONAL OFFICE CONTACT NAME: Mail Oripinal and one copy of this DMR (including all "No Flow" & "No Discharge" reports) within 30 days of receipt of sample (or at end of monitoring period in case of "No Flow") to: Division of Water Quality Attn: DWQ Central Files 1617 Mail Service Center Raleigh, North Carolina 27699-1617 YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED: "I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significanj penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." (Signature of 7/6/2016 (Date) Permit Date:7/1/2011-60/30/2015 Last Revised 7/13/11 Page 2 of 2 PROCESS WASTEWATER — Quarterly Discharge Monitoring Report C3G"NRAL PERMIT No. NCG140000 E>1 CERTIFICATE OF COVERAGE NO. NCG140309 FACILITY NAME: _Southern Concrete Materials - Pond Road_ PERSON COLLECTING SAMPLES: _Jeff Lamm CERTIFIED LABORATORY:_ETS Lab # _600 Rogers and Calcott Lab # _27_, LIMIT VIOLATIONS? YES [:]NON Part A: Wastewater Monitoring Requirements SAMPLE COLLECTION YEAR: _2016 SAMPLE QUARTER: ❑Jul -Sept ❑Oct -Dec ®Jan -March COUNTY: Buncombe PHONE NO. ) ADD TO LISTSERVE? ❑YES ❑NO EMAIL: []April -June DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA ❑Trout ®Other, OPTIONAL INFO: Outfall No. Date Sample 1 Collected (mm/dd/yr} Type of Wastewater ( VE, RM, MD z } pH (standard) Total Suspended Solids (mg/L) Settleable Solids (mL/L} TPH usingDischarge method 1664A 6 SG T NEM (mg/L) Duration (minutes) Total Flow (gallons/day)' - - - 6-93A 303.5 53 (15)6 - - 1 No flow VE,MD CENTRAL FILE WR SECTION ' If wastewater systems have not discharged in this quarter — report "No Flow" or "No Discharge" here. Please make sure to mark the sample quarter above. 2 Report the abbreviation for the type of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning (VE), Raw Material Stockpiles (RM), Mixing Drum Cleanout (MD). Report more than one type if the waste -stream is commingled. 3If an effluent limit is exceeded twice in a row, the permittee is required to institute monthly monitoring for that parameter for six months, unless DWQ RO staff notifies you to continue monitoring. ° pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saltwaters. 5 TSS limits are 20 mg/L for wastewater discharges to HQW waters, 10 mg/L for Trout and PNA waters, and 30 mg/L for all other water classifications. Permit Date: 7/1/2010-06/30/2015 Last Revised 07/13/11 Page 1 of 2 6 Process wastewater discharges shall only be monitored for TPH when commingled with stormwater discharges from VMA areas. TPH does not have a limit for wastewater, but instead is subject to benchmarks and provisions of Part IV, Section A, including the Tiered Response Action. Flow rate can be measured continuously or calculated. Flow limits for wastewater discharges to HQW waters shall be set to SO% of the Summer 7Q10 Flow as per 15A NC;C 02B .0224. Permittees who discharge wastewater to HQW waters shall obtain a Summer 7Q10 flow and report this information to DWQ. If the permittee cannot obtain a Summer 7Q10 flow for the receiving waters at the discharge location, the permittee shall notify DWQ, and the DWQ Regional Office may require an annual flow report on a case -by -case basis. MAIL ORIGINAL AND ONE COPY OF THIS ANNUAL SUMMARY (INCLUDING ALL "NO FLOW", "NO DISCHARGE") WITHIN 30 DAYS OF RECEIPT OF SAMPLE (OR AT END OF MONITORING PERIOD IN CASE OF "NO FLOW") TO: _ .. _ Division of Water Quality Attn: DWQ Central Files 1617 Mail Service Center Raleigh, North Carolina 27699-1617 (919) 807-6379 YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED: "I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." of Permittee) Permit Date:7/1/2010-06/30/2015 V7111 ( ate Last Revised 07/13/11 Page 2 of 2 ,STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM GENERAL PERMIT NO. NCG140000 CERTIFICATE OF COVERAGE NO. NCG140309 FACILITY NAME: Southern Concrete Materials -Pond Road_ PERSON COLLECTING SAMPLES _Eddie Teague CERTIFIED LABORATORY ETS Lab # _600 Lab # OPTIONAL INFO: Part A: Stormwater Monitoring Requirements SAMPLE COLLECTION YEAR: 2015 SAMPLING PERIOD: ® July -December ❑ January -June COUNTY Buncombe PHONE NO. ( ) ADD TO LISTSERVE? ❑YES ❑NO EMAIL: DISCHARGING TO CLASS: []SA ❑HQW ❑PNA ❑Trout ®Other, Outfall No. Date Sample Collected (mo/dd/yr OR NO FLOW)' pH (Standard Units} TSS (mg/L} Event Duration (minutes) Total Rainfall" (in) In Tier 2 Monthly Monitoring? (y/n) # of Months in Tier 2 Samplingz - - 6-92 10012.3 - - - - 1 9-29-15 8.1 64 1140 2.10 N — - :ram "Ca ..- DY 0 2 2015 C •L 1 L WR SECTION ' If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above. z If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2 Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range. s TSS benchmark values are 100 mg/I, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/l. For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge. N Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11 Page 1 of 2 Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year. Outfall No. Date Sample Collected (mo/dd/yr)1 PH (Standard Units) TPH using method I664A SGT-HEM (mg/L) Total Suspended Solids (mg/L) Event Duration (minutes) Total Rainfall , (in) New Motor Oil Usage (gal/month) In Tier 2 Monthly Monitoring? (y/n) # of Months in Tier 2 Sampling2 6-92 152 1002,3 HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO ❑ HAVE YOU CONTACTED THE REGION? YES ❑ NO ❑ REGIONAL OFFICE CONTACT NAME: Mail Original and one coov of this DMR (includine all "No Flow" & "No Discharge" reports) within 30 days of receipt of sample (or at end of monitoring period in case of "No Flow") to: Division of Water Quality Attn: DWQ Central Files 1617 Mail Service Center Raleigh, North Carolina 27699-1617 YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED: "I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete am aware that then a significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." %LJ,)- (Signs re Permittee) (D te) Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11 Page 2 of 2 r 4 PROCESS WASTEWATER — Quarterly Discharge Monitoring Repor ECEIVE® GENERAL PERMIT No. NCG140000 CERTIFICATE OF COVERAGE NO. NCG1 1 0 FACILITY NAME: S PERSON COLLECTING SAMPLES: t 0 CERTIFIED LABORATORY: f fi r ab # G T Lab # LIMIT VIOLATIONS? YES ❑ NO ❑ Part A: Wastewater Monitoring Requirements JUL 0 6 2015 CENTRAL FILES SAMPLE COLLECTION YEAR: % DWR SEC 7April-june N SAMPLE QU TER: ❑Jul -Sept ❑Oct -Dec ❑Jan -March COUNTY: �(� PHONE NO. ( ) ADD TO LISTSERVE? ❑YES ❑NO EMAIL: DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA []Trout Other F7 OPTIONAL INFO: Outfall No. Date Sample Collected 3 (mm/dd/Yr} Type of Wastewater (VE, RM, MD)' pH (standard) Total Suspended Solids (mg/L} Settleable Solids (ml/Lj TPH usingDischarge method 1664A SGT-NEM6 (mg/L) Duration (minutes} Total Flow gallons/day}' - - - 6-93,4 303.5 53 (15)6 - - U 1 If wastewater systems have not discharged in this quarter — report "No Flow" or "No Discharge" here. Please make sure to mark the sample quarter above. 2 Report the abbreviation for the type of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning (VE), Raw Material Stockpiles (RM), Mixing Drum Cleanout (MD). Report more than one type if the waste -stream is commingled. 'If an effluent limit is exceeded twice in a row, the permittee is required to institute monthly monitoring for that parameter for six months, unless DWQ RO staff notifies you to continue monitoring. 4 pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saltwaters. 5 TSS limits are 20 mg/L for wastewater discharges to HQW waters, 10 mg/L for Trout and PNA waters, and 30 mg/L for all other water classifications. Permit Date: 7/1/2010-06/30/2015 Last Revised 07/13/11 Page 1 of 2 a � 6 Process wastewater discharges shall only be monitored for TPH when commingled with stormwater discharges from VMA areas. TPH does not have a limit for wastewater, but instead is subject to benchmarks and provisions of Part IV, Section A, including the Tiered Response Action. "7 Flow rate can be measured continuously or calculated. Flow limits for wastewater discharges to HQW waters shall be set to 50% of the Summer 7Q10 Flow as per 15A NCAC 02B .0224. Permittees who discharge wastewater to HQW waters shall obtain a Summer 7Q10 flow and report this information to DWQ. If the permittee cannot obtain a Summer 7Q10 flow for the receiving waters at the discharge location, the permittee shall notify DWQ, and the DWQ Regional Office may require an annual flow report on a case -by -case basis. MAIL ORIGINAL AND ONE COPY OF THIS ANNUAL SUMMARY (INCLUDING ALL "NO FLOW". "NO DISCHARGE"1 WITHIN 30 DAYS OF RECEIPT OF SAMPLE AT END OF MONITORING PERIOD IN OF "NO FLOW") TO: Division of Water Quality Attn: DWQ Central Files 1617 Mail Service Center Raleigh, North Carolina 27699-1617 (919) 807-6379 YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED: "I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." _ Permittee) Permit Date: 7/1/2010-06/30/2015 7 ( ate Last Revised 07/13/11 Page 2of2 PROCESS WASTEWATER — Quarterly Discharge Monitoring Report j a GENERAL PERMIT NO. NCG140000 CERTIFICATE OF COVERAGE NO. NCG14 D 3 4 SAMPLE COLLECTION YEAR: �_ 3 f� FACILITY NAME: / SAMPLE QU4RTER: I Jul -Sept ❑Oct -Dec ❑Jan -March MApril-June PERSON COLLECTING SAMPLES: Ic COUNTY: �mtn,+• / CERTIFIED LABORATORY: Lab # PHONE NO. ( ] Lab # ADD TO LISTSERVE? []YES❑NO EMAIL: LIMIT VIOLATIONS? YES ❑ NO ❑ DISCHARGING TO CLASS: []SA ❑HQW ❑PNA []Trout Other C OPTIONAL INFO: Part A: Wastewater Monitorine Requirements Outfall No. Date Sample Collected 1 (mm/dd/yr} Type of Wastewater (VE, RM, MD)2 pH (standard) Total Suspended Solids (mg/L) Settleable Solids (mL/L) TPH using method 1664A SGT-NFM6 (mg/L) Discharge Duration (minutes] Total Flow (gallons/day)' - - - 5-93.4 3035 53 (15)6 - - V �LJ m r r-1 DWR SCCTi0N INPORMOON PROCESS 6 UNIT 2 If wastewater systems have not discharged in this quarter — report "No Flow" or "No Discharge" here. Please make sure to mark the sample quarter above. Z Report the abbreviation for the type of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning (VE), Raw Material Stockpiles (RM), Mixing Drum Cleanout (MD). Report more than one type if the waste -stream is commingled. 3if an effluent limit is exceeded twice in a row, the permittee is required to institute monthly monitoring for that parameter for six months, unless DWQ RO staff notifies you to continue monitoring. 4 pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saltwaters. 5 TSS limits are 20 mg/L for wastewater discharges to HQW waters, 10 mg/L for Trout and PNA waters, and 30 mg/L for all other water classifications. Permit Date: 7/1/2010-06/30/2015 Last Revised 07/13/11 Page 1 of 2 B Process wastewater discharges shall only be monitored for TPH when commingled with stormwater discharges from VMA areas. TPH does not have a limit for wastewater, but instead is subject to benchmarks and provisions of Part IV, Section A, including the Tiered Response Action. ' Flo y ram can be measured continuously or calculated. Flow limits for wastewater discharges to HQW waters shall be set to 50% of the Summer 7Q10 Flow as per 1SA NILAC-0213 .0224. Permittees who discharge wastewater to HQW waters shall obtain a Summer 7Q10 flow and report this information to DWQ. If the permittee cannot obtain a Summer 7Q10 flow for the receiving waters at the discharge location, the permittee shall notify DWQ, and the DWQ Regional Office may require an annual flow report on a case -by -case basis. MAIL ORIGINAL AND ONE COPY OF THIS ANNUAL SUMMARY (INCLUDING ALL "NO FLOW", "NO DISCHARGE") WITHIN 30 DAYS OF RECEIPT OF SAMPLE (OR AT END OF MONITORING PERIOD IN CASE OF "NO FLOW") TO: Division of Water Quality Attn: DWQ Central Files 1617 Mail Service Center Raleigh, North Carolina 27699-161.7 (919)807-6379 YOU MU5T51GN TH15 CERTIFICATION FOR ANY INFORMATION REPORTED: "I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." ( ate Permit Date: 7/1/2010-06/30/2015 Last Revised 07/13/11 Page 2 of 2 PROCESS WASTEWATER — Quarterly Discharge Monitoring Report GENERAL PERMIT NO. NCG140000 CERTIFICATE OF COV RAGE NO. NCG14_a 3 � 7 FACILITY NAME: o tlh o { , Y) rfli PERSON COLLECTING SAMPLES: ,'t P n CERTIFIED LABORATORY: F T_S Lab # Lab # LIMIT VIOLATIONS? YES ❑ NO Part A: Wastewater Monitoring Requirements SAMPLE COLLECTION YEAR: �— C 1 j, SAMPLE QU TER: ❑jul-Sept ❑Oct -Dec COUNTY: 01) CO }h Y PHONE NO. f ] ❑Jan -March [+April -June ADD TO LISTSERVE? DYES ❑NO EMAIL: DISCHARGING TO CLASS: ❑SA ❑HQW []PNA ❑Trout ❑Other OPTIONAL INFO: Outfall No. Date Sample Collected' (mm/dd/yr) Type of Wastewater (VE, RM, MD)Z pH (standard) Total Suspended Solids (mg/L) Settleable Solids (mL/L) TPH usingDischarge method 1664A SGT-HEM6 (mg/L) Duration (minutes) Total Flow gallons/day)l - - - 6-93A 303.s 53 (15)6 - - ! EIVEI FILE DSECTION ' If wastewater systems have not discharged in this quarter — report "No Flow" or "No Discharge" here. Please make sure to mark the sample quarter above. 2 Report the abbreviation for the type of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning (VE), Raw Material Stockpiles (RM), Mixing Drum Cleanout (MD). Report more than one type if the waste -stream is commingled. 3If an effluent limit is exceeded twice in a row, the permittee is required to institute monthly monitoring for that parameter for six months, unless DWQ RO staff notifies you to continue monitoring. " pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saltwaters. 5 TSS limits are 20 mg/L for wastewater discharges to HQW waters, 10 mg/L for Trout and PNA waters, and 30 mg/L for all other water classifications. Permit Date:7/1/2010-06/30/2015 Last Revised 07/13/11 Page 1 of 2 6 Process wastewater discharges shall only be monitored for TPH when commingled with stormwater discharges from VIVA areas. TPH does not have a limit for wastewater, but instead is subject to benchmarks and provisions of Part IV, Section A, including the Tiered Response Action. 7 Flow rate can be measured continuously or calculated. Flow limits for wastewater discharges to HQW waters shall be set to 50% of the Summer 7Q10 Flow as per 15A _NCAG0,28 .0224. Permittees who discharge wastewater to HQW waters shall obtain a Summer 7Q10 flow and report this information to DWQ. If the permittee cannot obtain a Summer 7Q10 flow for the receiving waters at the discharge location, the permittee shall notify DWQ, and the DWQ Regional Office may require an annual flow report on a case -by -case basis. MAIL ORIGINAL AND ONE COPY OF THIS ANNUAL SUMMARY (INCLUDING ALL "NO FLOW", "NO DISCHARGE") WITHIN 30 DAYS OF RECEIPT OF SAMPLE (OR AT END OF MONITORING PERIOD IN CASE OF "NO FLOW") TO: Division of Water Quality Attn: DWQ Central Files 1617 Mail Service Center Raleigh, North Carolina 27699-1617 (919) 807-6379 YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED: "I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." re of Permittee) Permit Date: 7/1/2010-06/30/2015 (Da"te) Last Revised 07/13/11 Page 2 of 2 PROCESSWASTEWATER — Quarterly Discharge Monitoring Report F==* GENERAL. PERMIT No. NCG140000 CERTIFICATE OF COVERAGE NO. NCG1413 O �_ i FACILITY NAME: S a � L fwltdne la' I PERSON COLLECTING SAMPLES: It 7�rc h CERTIFIED LABORATORY: Lab # Lab # LIMIT VIOLATIONS? YES ❑ NO ❑ Part A: Wastewater Monitoring Requirements W r � SAMPLE COLLECTION Y R: a- SAMPLE QUART Jul-5 pt ❑Oct -Dec Dian -March ❑April -June COUNTY: PHONE NO. 1 ADD TO LISTSERVE? DYES ONO EMAIL: DISCHARGING TO CLASS: []SA ❑HQW ❑PNA ❑Trout ❑Other, OPTIONAL INFO: Outfall No. Date Sample Collected' (mm/dd/yr) Type of Wastewater (VE, RM, MD)z pH (standard) Total Suspended Solids (mg/L) Settleable Solids (mL/L) TPH using method 1664A SGT-NFM6 (mg/ L) Discharge Duration (minutes) Total Flow (gallons/day)' - - - 6-93.41 303,5 53 (15)6 - - Y UG 2 4 ' 1f wastewater systems have not discharged in this quarter — report "No Flow" or "No Discharge" here. Please make sure to mark the sample quarter above. z Report the abbreviation for the type of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning (VE), Raw Material Stockpiles (RM), Mixing Drum Cleanout (MO). Report more than one type if the waste -stream is commingled. 'if an effluent limit is exceeded twice in a row, the permittee is required to institute monthly monitoring for that parameter for six months, unless DWQ RO staff notifies you to continue monitoring. ° pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saltwaters. 5 TSS limits are 20 mg/L for wastewater discharges to HQW waters, 10 mg/L for Trout and PNA waters, and 30 mg/L for all other water classifications. Permit Date: 7/1/2010-06/30/2015 Last Revised 07/13/11 Page 1 of 2 +" Fit Es• f�; rr.; � ProL`�;s wastewater discharges shall only be monitored for TPH when commingled with stormwater discharges from VMA areas. TPH does not have a limit for wastewater, s;i'ut instead is subject to benchmarks and provisions of Part IV, Section A, including the Tiered Response Action. ' How rate can be measured continuously or calculated. Flow limits for wastewater discharges to HQW waters shall be set to 50% of the Summer 7Q10 Flow as per 15A NCAC 028 .0224. Permittees who discharge wastewater to HQW waters shall obtain a Summer 7Q10 flow and report this information to DWQ. If the permittee cannot obtain a Summer 7Q10 flow for the receiving waters at the discharge location, the permittee shall notify DWQ, and the DWQ Regional Office may require an annual flow report on a case -by -case basis. MAIL ORIGINAL AND ONE COPY OF THIS ANNUAL SUMMARY (INCLUDING ALL "NO FLOW", "NO DISCHARGE") WITHIN 30 DAYS OF RECEIPT OF SAMPLE (OR AT END OF MONITORING PERIOD IN CASE OF "NO FLOW") TO: Division of Water Quality Attn: DWQ Central Files 1617 Mail Service Center Raleigh, North Carolina 27699-1617 (919) 807-6379 YOU MUSTSIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED: "I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." of Permittee) Permit Date:7/1/2010-06/30/2015 [ te) Last Revised 07/13/11 Page 2 of 2 PROCESS WASTEWATER — Quarterly Discharge Monitoring Report GENERAL PERMIT NO. NCG140000 CERTIFICATE OF COVERAGE NO. NCG14 Q J FACILITY NAME: _ _ .i 4,1 OF A r+ n ��:17 / PERSON COLLECTING SAMPLES: it L� LgM m CERTIFIED LABORATORY: Lab Lab $t LIMIT VIOLATIONS? YES Q NO ❑ Part A: Wastewater Monitoring Reouirements SAMPLE COLLECTION YEAR: �- o % SAMPLE QU TER: ❑Ju1ll-Sept ❑Oct -Dec rMn-March ❑April -June COUNTY:L PHONE NO. {�) ADD TO LISTSERVE? ❑YES [-]NO EMAIL: DISCHARGING TO CLASS: []SA ❑HQW ❑PNA []Trout ❑Other OPTIONAL INFO: Outfall No. Date Sample Collected 1 (mm/dd/yr) Type of Wastewater (VE, RM, MD)2 pH (standard) Total Suspended Solids (mg/L) Settleable Solids (mL/L) 7PH using method 1664A SGT HEM6 (mg/L) Discharge Duration (minutes) Total Flow (gallons/day)' , i; 3 i ij V r CcN�yF n 1I R SECTIQfy 1 if wastewater systems have not discharged in this quarter - report "No Flow" or "No Discharge" here. Please make sure to mark the sample quarter above. 2 Report the abbreviation for the type of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning (VE), Raw Material Stockpiles (RM), Mixing Drum Cleanout (MD). Report more than one type if the waste -stream is commingled. ' 3 if an effluent limit is exceeded twice in a row, the permittee is required to institute monthly monitoring for that parameter for six months, unless DWQ RO staff notifies you to continue monitoring. 4 pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saltwaters. 5 TSS limits are 20 mg/L for wastewater discharges to HQW waters, 10 mg/L for Trout and PNA waters, and 30 mg/L for all other water classifications. Permit Date:7/1/2010-06/30/2015 Last Revised 07/13/11 1 iW Z4 Page 1 of 2 6 Process wastewater discharges shalt only be monitored for TPH when commingled with stormwater discharges from VMA areas. TPH does not have a limit for wastewater, but instead is subject to benchmarks and provisions of Part IV, Section A, including the Tiered Response Action. Flc.,,-j' ratelt'an be measured continuously or calculated. Flow limits for wastewater discharges to HQW waters shall be set to 50%of the Summer 7Q10 Flow as per 15A NCAC 02B .0224. Permittees who discharge wastewater to HQW waters shall obtain a Summer 7Q10 flow and report this information to DWQ. If the permittee cannot obtain a Summer 7Q10 flow for the receiving waters at the discharge location, the permittee shall notify DWQ, and the DWQ Regional Office may require an annual flow report on a case -by -case basis. MAIL ORIGINAL AND ONE COPY OF THIS ANNUAL SUMMARY (INCLUDING ALL "NO FLOW `_NO DISCHARGE") WITHIN 30 DAYS OF RECEIPT OF SAMPLE (OR AT END OF MONITORING PERIOD 1N CASE OF "NO FLOW") TO: Division of Water Quality Attn: DWQ Central Files 1617 Mail Service Center Raleigh, North Carolina 27699-1617 (919) 907-6379 YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED: "I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." A re of Permittee) Permit Date:7/1/2010-06/30/2015 (Dade) Last Revised 07/13/11 Page 2 of 2 r Permit Application for A uthorization to Construct (A to C) a Process / Stormwater Recycling System NPDES General Permit No.: NCG140000 Certificate of Coverage: NCG140309 a a Prepared for: Southern Concrete MatertaCs - Pond Road PCant 80 Pond Road Asheville, Buncombe County, North Carolina 28806 �N CARP y..OF�SSJp4,.*� - R. SEAL 9` ' 19807 - ° �'rflt�i� �•••��W is I � i8 $ . a CPEES Project No.1114-003 October 30, 2008 ✓ Approved Stormwater Permit Documents • Construction in accordance with these documents is required by the stofmwater permit. North Carolina rules require that the stormwater system designer certify conformity with the , plans and specs; a Permit #AI(6 -J0'I Date 2F D by,,,,,,,' � . , NC Division of Water Quality , Pre par9AWRevision Date Chalam Pakala•Engineering and Environmental Solutions 10017 Allyson Park Dr., ' Charlotte, North Carolina 28277 Tel (704) 541-4042 / Fax: (704) 541-4043 - Email: cvpakala cr carolina.rr.com 4 7 /f-I p p D � � y ' 1 7 -- -� - - --- - -- - - - - - .S:- -- - - - - - - - � rt - - --- - ' � - � • - � i • 1 i , .` ' , � � C . ' ` / • � j, 6 i O ' Permit Application for Authorization to Construct (A to C) a Process /Stormwater Recycling System NPDES General Permit No.: NCG140000 Certificate of Coverage: NCG140309 TABLE OF CONTENTS 1.0 FACILITY DESCRIPTION..............................................................................................1 2.0 FACILITY OPERATIONS................................................................................................1 3.0 PROCESS WASHWATER CALCULATIONS..............................................................2 4.0 STORMWATER RUNOFF CALCULATIONS FOR A 25 YEAR AND 24-HR RAIN EVENT.......................................................................................................................................3 5.0 pH ADJUSTMENT FOR THE RECYCLE SYSTEM....................................................3 6.0 STORMWATER / PROCESS WASHWATER RECYCLE SYSTEM DESIGN AND CONSTRUCTION DETAILS.................................................................................................4 7.0 A to C CONSTRUCTION PERMIT APPLICATION....................................................5 TABLES Table 1: Runoff Volume Calculations for a 25 yr, 24-hr Storm Event FIGURES Figure 1: Site Location Map Figure 2: Aerial View of Surrounding Properties around the Asheville - Pond Road Plant Figure 3: Site Layout Map with Buildings, Dry Mix Concrete Plant and Proposed Location of Process Washwater / Stormwater Recycle System Figure 4: Design Details of Proposed Process Washwater / Stormwater Recycle System Figure 5: Process Washwater and Stormwater Recycle System Construction Details Figure 6: Truck Travel Path ATTACHMENTS Attachment A: Runoff Volume and Weir Design Calculations with Backup Attachment B: Laboratory Analytical Results Supplied by Environmental Testing Solutions Attachment C: Manufacturer Supplied Literature for Carbon Dioxide System Attachment D. NC DENR — Division of Water Quality Stream Classification Table for Buncombe County CP Engineering and Environmental Solutions i A to C Permit Application Tel: (704) 541-4042 Southern Concrete Materials —Pond Road 80 Pond Road Permit Application for Authorization to Construct (A to Q a Process /Stormwater Recycling System NPDES General Permit No.: NCG140000 Certificate of Coverage: NCG140309 1.0 FACILITY DESCRIPTION Southern Concrete Materials -Pond Road Plant located at 80 Pond Road, Asheville, Buncombe County, North Carolina, is a dry batch ready mix concrete plant for commercial supply." The primary Standard Industrial Classification (SIC Code) for the facility is 3273 (Ready Mixed Concrete). The approximate location of the facility on a US Geological Survey Map is provided on Figure 1. The geographic site location can also be given as 350 32' 44.5" North Latitude and 820 36' 10.6" West Longitude. The subject facility is surrounded by light manufacturing and thick wooded area on north, east and south sides of the property with Hominy Creek. The west is north side of the property has light manufacturing and a highway. The details of surrounding properties are displayed on Figure 2:'The Pond Road Plant occupies approximately 7.701 acres of land and out of which, approximately 1.1 acres of area is paved with concrete. Hominy Creek enveloping the property on north, east and south of the property carries the stormwater from the subject facility. Based on my discussion with NC Division of Water Quality, it is our understanding that Hominy Creek is classified as Class C (see attached table obtained from NC DENR — Division of Water Quality Section web site for details -Attachment D)_ The stormwater from the facility is carried to Hominy Creek via swales and sheet flow (Figure 3). The Pond Road Plant consists of an office building, a ready mix concrete plant next to the office building, cement and fly -ash silos, an aboveground fuel oil tank with a secondary containment, an enclosed shed, a concrete secondary containment for admixture tanks, sand and gravel storage areas, and a concrete truck drum wash area. Pond Road Plant has approximately 9 to 10 trucks and operates 8 hrs/day, 5 days/wk and 30 to 50 wks/year , depending upon weather conditions. 2.0 FACILITY OPERATIONS The facility operations include: a dry batch concrete plant with vacuum system for dust control --(no water sprinklers are attached to the concrete truck loading chute for dust suppression), cement and fly -ash silos with a dust control central vacuum system, sand and gravel storage areas with no water sprinkler system (dry storage areas) and a truck washing area. -- Based on the request from the user, the sand, gravel, and cement and flyash are loaded into a weigh scale which drops the dry mix into cement trucks as a dry batch concrete mix. During the truck loading process, vacuum is appl� around the loading chute to suppress any cement / particulate dust that is being generated. The dust extracted from the loading chute area is processed through a NC DENR Division of Air Quality permitted bag filter system before released into the atmosphere. The loaded cement truck with concrete mix is brought to a truck CP Engineering and Environmental Solutions 1 A to C Permit Application Tel: (704) 541-4042 Southern Concrete Materials —Pond Road 80 Pond .Road washing area.for a surficial wash before goes out for the delivery. Occasionally, any left over concrete in the concrete drum is washed of at the plant in a truck wssNing bay,,._ Thus, process water is being generated at the plant for either recycling or disposal. Based on our understanding of the facility operations, all chemical and oil tanks / drums are located in secondary containment dikes with dike valves in shut position. Therefore, no oily water or stormwater contaminated with chemicals are being released to the environment from the f facility. The facility has a NPDES General Pen -nit (NCG 140000) with a certificate of coverage NCG140309 to discharge stormwateplfrom the subject facility operations. To meet the NPDES General Stormwater Permit requirements, a Stormwater Pollution Prevention Plan (SWPP Plan) with Best Management Practices for potential stormwater pollutant sources was prepared and implemented at the site in September 22, 2006. In addition, all truck drums and drum chutes are washed at the end of the day before parked for good. Therefore, the locations where process washwater is being generated at the plant are: Surfcial cleaning of the drum before leaving the site, r • Cement drum washing if left over concrete is brought back to the plant; and • Drum and drum chutes cleaning at the end of the day. 3.0 PROCESS WASHWATER CALCULATIONS Based on our discussions with the Asheville - Pond Road Plant Manager, it is our understanding that approximately 40 to 45 batches per day are completed in the summer time and 25 batches per day are completed in the winter time using 9 to 10 trucks. Approximately 5 to 10 gals of water are used for surficial washing of the truck per batch. Approximately 5 to 10 gals of water are used to wash drum chutes per truck per day at the end of the day. Approximately 200 gals per day per drum are used to wash at the end of the day. Description of Operation Unit Total # Trucks worst -case trucks 10 # Batches per day using 10 trucks worst -case scenario -summer time) Batches 45 Surficial cleaning 10 gals/batch 450 ✓ Chute cleaning at the end of the day 10 gals/truck too-,' Drum cleaning at the end of the day 150gals/truck 1,500 Leftover concrete washing firam the drum (5 batches 200 gals/batch 1,000 ✓ Total(gals/day) 3,050 CP Engineering and Environmental Solutions 2 A to C Permit Application Tel: (704) 541-4042 Southern Concrete Materials —fond Road 80 Pond Road 4.0 STORMWATER RUNOFF CALCULATIONS FOR A 25 YEAR AND 24-HR RAIN EVENT According NC DENR-Division of Water Quality NPDES General Stormwater Permit requirements, recycle systems are considered wastewater treatment per 15A NCAC 2H .0203 and all wastewater discharges must meet a total suspended solids (TSS) limit of 30 mg/l, a settleable solids (SS) limit of 5 ml/l, and pH between 6-9 SU or must demonstrate that the ✓, recycle system has sufficient capacity to contain 25-year, 24-hr rainfall event plus one foot of freeboard under the design operating conditions. To obtain an economic and workable s!o�!Ytion to the proposed recycling system design, the truck washing perations-a—n4process washwater generating points are all brought to on_ location t,� duce the drainage area for 25-yr, 24-hr calculations. Approximately 27,572 sq ft or 0.65 acres of area including the pit system designed for the process / stormwater recycling is expected to contribute to the process wastewater from the facility (Figure 3). All washing operations beyond this designated area are prohibited at the facility and the drivers will be trained to adhere to this new policy for meeting the Stormwater regulations. CPEES has performed stormwater calculations for a 25-yr, 24-hr rain event for 0.65 acres and approximately 13,921 cubic feet (cft) of runoff capacity is required to hold the designed rain event. The runoff volume and weir design calculations are provided in Attachment A. IS Please note, during a rain event, no plant operations will be conducted. Therefore, no washwater is accounted for in the proposed recycle system design when 25-yr, 24-hr rain event for stormwater is considered. 5.0 pH ADJUSTMENT FOR THE RECYCLE SYSTEM Southern Concrete Materials has been currently using Carbon Dioxide Systems -to control pH in the process washwater generated at some of their facilities. it is proven very efficient to control pH with carbon dioxide since carbon dioxide when mixed with water forms carbonic acid. It is a weak acid which would neutralize alkaline solution (cement washwater) generated at the plant. Carbonic acid, has the ormula H2CO3. It is also a name sometimes given to solutions of carbon dioxide in water, which contain small amounts of H2CO3. The salts of carbonic acids are called bicarbonates (or hydrogencarbonates) and carbonates. It is a weak acid Carbon dioxide dissolved in water is in equilibrium with carbonic acid: CO2 + H2O ^ H2CO3 1: Wikipedia: http://en.wikil2edia.ory/wiki/Carbonic acid CP Engineering and Environmental Solutions 3 A to C Permit Application Tel: (704) 541-4042 Southern Concrete Materials —fond Road 80 Pond Road In addition, it has also proven to be having a secondary benefit in reducing total suspended t% and settleable solids concentration considerably from the process washwater and stormwater recycle system. A copy of analytical test results obtained from NC certified laboratory, Environmental Testing Solutions, for a similar site - SCM Biltmore Plant in Biltmore, North Carolina is provided in Attachment B for the State review. The manufacturer supplied literature for Carbon Dioxide System is provided in Attachment C. 6.0 STORMWATER / PROCESS WASHWATER RECYCLE SYSTEM DESIGN AND CONSTRUCTION DETAILS The proposed recycle system is designed to capture all process washwater and stormwater from a 25-yr, 24-hr rainfall event from the subject plant wash areas. The recycle system is designed to hold entire runoff amount from the designed storm event. The approximate P x drainage area involved in the process washwater is estimated to be 0.65 acres (Fi e3). The@�r'p 25 year, 24-hr runoff volume from this drainage area is estimated to be 13,921 eft A recycleQ f ' system designed for the estimated runoff is a three pit system (Figure 4). The total volume of all the three pits were designed to be sufficient to hold the entire 25 year, 24-hr run off volume. Please note SCM strives very hard to control and mitigate migration of any contaminated stormwater from the facility to the waters of US. Appropriate slopes/berms/walls are proposed to isolate the 0.65 acres of drainage area for the washwater / t/ stormwater recycling operations (Figure 3). All the three pits in the recycling system were sloped at the entrance in order for a front-end loader to go into the pit for a periodic cleanup. However, a berm or a slope away from the pit Iz, is placed infront of the second and the third pit in order to divert the wash wastewater entry into these pits. The cross -sectional and construction details of the pits are shown on Figure 5 and the truck travel path is shown on Figure 6. CPEES designed a pit sludge storage area next to the truck washing operations in order to control stormwater flow that is in contact with the pit sludge. The slopes of the truck washing operations and the pit sludge storage area are directed toward the first pit of the three pit recycling system in order to control and mitigate migration of stormwater contamination from the washing operations. The location of the three pit recycling system along with stormwater flow directions and wash areas are displayed on Figure 2. The construction details for the three pit system are displayed on Figure 3 and 4. In addition to the three pit system, the proposed carbon dioxide system in the three pit recycle system will enhance additional removal of Total Suspended Solids (TSS) and Settleable Solids (SS), and also adjust pH to suit process water for recycling at the plant The location of the carbon dioxide system is displayed on Figure 3. The 25 year, 24-hr ✓✓✓ stormwater runoff calculations are provided in Table 1 of this report. CP Engineering and Environmental Solutions 4 A to C Permit Application Tel; (704) 541-4042 Southern Concrete Materials —Pond Road 80 Pond Road A sump pump with a level switch will be provided to pump water from the third pit as required either to the plant or to the truck washing operations. This would help empty the third pit to accommodate any possible rain event. 7.0 A to C CONSTRUCTION PERMIT APPLICATION Based on our consultants' discussions with the State DWQ, it is our understanding that we need to file a NCG 140000 Notice of Intent (NOI) Form to obtain A to C Permit to construct the proposed process washwater 1 stormwater recycle system at the Asheville Pond Road eX Plant. A copy of the NCG 140000 NOI is attached with the A to C Report for an approval. CP Engineering and Environmental Solutions 5 A to C Permit Application Tel. (704) 541-4042 Southern Concrete Materials —Pond Road 80 Pond Road NCDENR .� Yang U.a. O'.rvn.rm o. Frrn�wrn +rn H.cl.rtx. Fbb.xrs Division of Water Quality / Surface Water Protection National Pollutant Discharge Elimination System NCG140000 FOR AGENCY USE; ONLY Date Received Year Month Da Certificate of Cuvem o 4 Chock # Aroaunt Perm t Assigned to NOTICE OF INTENT /1l07— NtG,e554,QY National Pollutant Discharge Elimination System application for coverage under General Permit NCO140000: STORMWATER AND PROCESS WASTEWATER DISCHARGES associated with activities classified as: SIC (Standard Industrial Classification) Code , 3273 Ready Mixed Concrete For new plant sites that will discharge or recycle process wastewater (even if commingled with stormwater): This NOI is also an APPLICATION FOR Authorization to Construct (ATC) wastewater treatment facilities. ATC requests must be submitted at least 90 days prior to construction'. For existlng plant sites discharging or recycling process wastewater (even if commingled with stormwater): This NOI is also an APPLICATION FOR Authorization to continue to overate wastewater treatment facilities in place. Construction, modification, or installation of any new treatment components at an existing site requires an ATC. Treatment facilities used to treat or recycle process wastewater (including stormwater BMP structures treating process wastewater flows commingled with stormwater) require an ATC prior to construction per 15A NCAC 214.0138. The authorization to construct or continue to operate will be issued at the same time as the Certificate of Coverage (COC) for the NCG14 permit. Design of treatment facilities must comply with requirements of 15A NCAC 2H .0138 & .0139. Construction of wastewater treatment facilities (this includes recycle systems) at new or existing plant sites requires submission of three (3) sets of plans and specifications signed and sealed by a Professional Engineer (P.E.) or qualified staff2 along with this application. A copy of the design calculations should be included. Please see questions 14 & 15. For questions, please contact the DINO Regional Office for your area. (See page 5) (Please print or type) 1) Mailing address of owner/operator (address to which all permit correspondence will be mailed): Name Street Address City Telephone No. MR. JEFF LAMM, EH & S MANAGER P.O. BOX 5395 ASHEVILLE State NC ZIP Code 28813 828-253-6421 Fax. 828-254-3024 2) Location of facility producing discharge: Facility Name SOUTHERN CONCRETE MATERIALS - POND ROAD PLANT Facility Contact MR. JEFF LAMM, EH&S MANAGER Street Address BO POND ROAD City County ASHEVILLE State NC ZIP Code 28806 BUNCOMBE Telephone No. 828-253-6421 Fax: 828-254-3024 Page 1 of 5 'Asper 15A NCAC 2H .0106 2Unless treatment facilities are designed, constructed, and put into operation by employees internal to the company who are qualified to perform such work for their respective companies in accordance with General Statutes, 89C-25 (7), plans and specifications must be signed and sealed by a P.E. SWU-229-071408 Last revised 7/14/08 NCG140000 N.O.l. 3) Physical location information: Please provide a narrative description of how to get to the facility (use street names, state road numbers, and distance and direction from a roadway intersection). SEE DRAWING FOR DETAILS (A copy of a county map or USGS quad sheet with facility clearly located on the map is a required part of this application.) 4) Latitude 35 32' 44.5" Longitude 80 36' 10.6" (deg, min, sec) 5) This NPDES Permit Application applies to which of the following: ❑ New or Proposed Facility Date operation is to begin 0 Existing 6) Standard Industrial Classification: Provide the 4 digit Standard Industrial Classification Code (SIC Code) that describes the primary industrial activity at this facility SIC Code: 3 2 7 3 7) Provide a brief description of the types of industrial activities and products produced at this facility: (Include a site diagram showing the process areas present at this facility.) DRY COCNRETE OPERATIONS, —PLANT PRODUCES CONCRETE FOR COMMERCIAL USE 8) Discharge points / Receiving waters: How many discharge points (ditches, pipes, channels, etc.) convey stormwater and/or wastewater from the property? ONE (OUTFALL-001) What is the name of the body or bodies of water (creek, stream, river, lake, etc.) that the facility stormwater and/or wastewater discharges end up in? HOMINY CREEK (SEE FIGURE 1) If the site stormwater discharges to a separate storm sewer system, name the operator of the separate storm sewer system (e.g. City of Raleigh municipal storm sewer). NIA. Receiving water classification (if known): CLASS C (SEE ATTACHED SHEETS) Note: Discharge of process wastewater to receiving waters classified as W5-II to WS-V or SA must be approved by the N.C. Dept. of Environmental Health. If DEH does not approve, coverage under NCG140000 cannot be granted. No new discharges of process wastewater are permitted in receiving waters classified as WS-I or freshwater ORW. 9) Does this facility have any other NPDES permits? V1 No ❑ Yes If yes, list the permit numbers for all current NPDES permits for this facility: 10) Does this facility have any Non -Discharge permits (ex: recycle permits)? 0 No ❑ Yes If yes, list the permit numbers for all current Non -Discharge permits for this facility: 11) Does this facility employ any best management practices for stormwater control? ❑ No V Yes If yes, please briefly describe: SECONDARY CONTAINMENT FOR OILSICHEMICALSTGRA AROUND THE STONE AND SAND STORAGE AREAS. PLANS TO RECYCLE WASHWATER Page 2 of 5 SWU-229-071408 Last revised 7/14/2008 t-� NCG140000 N.O.I. 12) Does this facility have a Stormwater Pollution Prevention Plan? ❑ No ® Yes If yes, when was it implemented? SEPTEMBER 22, 2006 13) Are vehicle maintenance activities occurring or planned at this facility? 0 No ❑ Yes Wastewater Treatment Design Information 14) Are discharges occurring or planned from any of the following process wastewater generating activities? Vehicle and equipment cleaning Wetting of raw material stockpiles Mixing drum cleaning 0 Yes ❑ No ❑ Yes 0 No V 0 Yes ❑ No If yes to any of the above, please describe the type of process used to treat and/or recycle the process wastewater. '� For a sufficient application, you must provide design specifics (e.g., design volume, retention time, surface ,1 area, etc.) and calculations to demonstrate compliance with permit effluent limits (pH - 6-9 SU, Total Suspended Solids (TSS) - 30 mg/l, and Settleable Solids (SS) - 5 mill.) [Use separate sheet(s)]. If all these discharges are recycled, please refer to Question 15. For plants that recycle and/or discharge process wastewater. When applying for this permit, you are also applying for an authorization to construct (new treatment facilities) or authorization to continue to operate (existing treatment facilities) as part of the NOE For new sites, you must submit three (3) sets of design plans and specifications with this application and provide supporting calculations that predict compliance of final discharge with permit limits. For existing sites, applicants should submit three (3) sets of plans and specs for facilities as -built and provide as many design details as possible, or submit a detailed diagram of treatment systems in place that includes information such as tank volumes, dimensions, retention time, piping, settling basin details, etc. Please note: if new treatment systems are planned for an existfna site, an ATC will be required prior to construction of those facilities. Plans/specs/calculations prepared by a P.E. and the request for an ATC may be submitted with this NOI, or separately at a later date. DWO may request the status of your plans for requesting an ATC upon issuance of the COC. 15) Does the facility use or plan to use a recycle system? ❑ No 0 Yes If yes, what size storm event is the system designed to hold before overflowing? (for example, 10-yr, 24-hr) 25 year, 24-hr rainfall event For a recycle system (regardless of when it overflows), please provide plans, calculations, and design specifics (e.g., throughput assumptions/water balance, design volume, retention time, surface area, amount of freeboard in design storm event, etc.). {Use separate sheet(s)]. 'Ka' For a sufficient application, the information must demonstrate compliance of final discharge with permit effluent limits (pH — 6-9 SU, Total Suspended Solids (TSS) — 30 mgll, and Settleable Solids (SS) -- 5 ml/l), or must demonstrate that the recycle system has sufficient capacity to contain runoff from a 25-year, 24-hr rainfall event plus one foot of freeboard under design operating conditions. Page 3 of 5 Swu-229-071408 Last revised 7/14/2008 NCG140000 N.O.I. 16) Are wastewater treatment facilities (including recycle systems) planned in the 100-year flood plain? 0 No ❑ Yes If so, include information to demonstrate protection from flooding. (Minimum design requirements for treatment works include protection from the 100-year flood, per 15A NCAC 2H .0219.) 17) Hazardous Waste: a) Is this facility a Hazardous Waste Treatment, Storage, or Disposal Facility? 0 No ❑ Yes b) Is this facility a Small Quantity Generator (less than 1000 kg. of hazardous waste generated per month) of hazardous waste? 0 No ❑ Yes c) Is this facility a Large Quantity Generator (1000 kg. or more of hazardous waste generated per month) of hazardous waste? la No ❑ Yes d) If you answered yes to questions b. or c., please provide the following information: Type(s) of waste: How is material stored: Where is material stored: How many disposal shipments per year: !Name of transport / disposal vendor: _ Vendor address: 18) Certification: North Carolina General Statute 143-215.6 B(i) provides that: Any person who knowingly makes any false statement, representation, or certification in any appficadon, record, report, plan, or other document filed or required to be maintained under this Article or a rule implementing this Article; or who knowingly makes a false statement of a material fact in a rulemaking proceeding or contested case under this Article; or who falsifies, tampers with, or knowingly renders inaccurate any recording or monitoring device or method required to be operated or maintained under this Article or rules of the (Environmental Management] Commission implementing this Article shall be guilty of a Class 2 misdemeanor which may include a fine not to exceed ten thousand dollars ($10,000). I hereby request coverage under the referenced General Permit. I understand that coverage under this permit will constitute the permit requirements for the discharge(s) and is enforceable in the same manner as an individual permit. I certify that I am familiar with the information contained in this application and that to the best of my knowledge and belief such information is true, complete, and accurate. Printed Name of Person Signing: MR. JEFF LAMM Title: EH & S MANAGER (Signature of ApplIc ,#` (Dale Si � ned) g Notice of Intent must be accompanied by a check or money order for $100.00 made payable to: NCDENR Page 4 of 5 SWU-229-071408 Las[ revised 7/14/2008 NCG140000 N.O.I. Final Checklist This application will be returned as incomplete unless all of the following items have been included: 0 Check for $100 made payable to NCDENR. x Ivor 0 This completed application and all supporting documentation (including design details and calculations for treatment systems). V❑ If an Erosion & Sedimentation Control (E&SC) Plan is required? from Division of Land Resources (DLR) 01— or local designee: documentation verifying applicant has developed and submitted that Plan to the governing agency (required per 15A NCAC 02H .0138). NOT REQUIRED ❑ For new sites (or sites that will install new treatment facilities): Three (3) copies of plans and ► specifications for wastewater treatment facilities (including recycle systems), signed and sealed by a i Professional Engineer or qualified staff meeting requirements of G.S. 89C-25 (7). NIA IKJ For existing sites: three (3) copies of plans and specifications for wastewater treatment facilities (including recycle systems) as built, stamped and sealed by a Professional Engineer, or (only if plans not available) a detailed diagram of treatment systems in place that includes information such as tank volumes, dimensions, retention time, piping, settling basin details, etc. SEE ATTACHED 0 A site map showing, at a minimum, (existing or proposed): (a) outline of drainage areas, (b) stormwaterlwastewater treatment structures, (c) location of stormwaterlwastewater outfalls (corresponding to which drainage areas) (d) runoff conveyance structures X I I (e) areas where materials are stored, (f) impervious areas, and (g) site property lines. / m A county map or USGS quad sheet with location of facility clearly marked. Mail the entire package to: Stormwater Permitting Unit Division of Water Quality 1617 Mail Service Center Raleigh, North Carolina 27699-1617 Note The submission of this document does not guarantee the issuance of an NPDES permit. For questions, please contact the DWQ Regional Office far your area. DWO Regional Office Contact Information: Asheville Office .... Fayetteville Office . Mooresville Office . Raleigh Office ...... Washington Office Wilmington Office . Winston-Salem .... Central Office ...... (828) 296-4500 (910) 433-3300 (704) 663-1699 (919) 791-4200 ...(252) 946-6481 (910) 796-7215 (336)771-5000 ..(919) 807-6300 Page 5of5 5WU-229-071408 Last revised 7/14/2008 Raleigh, N Carolina to 80 Pond Rd, Asheville, NC 28806 - Google Maps Page 1 of 1 GOO Vry Ly Maps Raleigh, N Carolina Directions to 80 Pond Rd, Asheville, NC 28806 249 mi - about 3 hours 59 mins Save trees. Go green! ,, Download Google Maps on your phone at google.comlgmm o 1. Head west on W Morgan St toward S Harrington St go 482 ft total 482 ft 2. Turn right at S Harrington St go 302 ft total0.1 mi 3. Turn left at Hillsborough StlNC-54 go 2.9 mi About 6 mins total 3.0 mi 4. Take the ramp onto 1440 E go 0.4 mi total 3.4 mi 5. Take exit 4 for Wade Ave go 0.3 mi total 3.7 mi % 6. Turn left at Raleigh Chapel Hill ExpyMade Ave go 2.4 mi About 3 mins total 6.1 mi 7. Take the exit toward 1-40 W go 0.5 mi total 6.6 mi 8. Keep left at the fork, follow signs for Durham/1-40 W and merge onto I- go 61.8 mi 40 W total 68.4 mi About 58 mins 9. Slight right at 40 W (signs for US-70/Greensboroll-40 WII-85 S) go 14.3 mi About 14 mins total 82.6 mi 10. Take the exit toward 1-40 W go 0.4 mi total 83.1 mi 11. Keep left at the fork to continue toward 1-40 W and merge onto 1-40 W go 165 mi About 2 hours 32 mins total 248 mi 12. Take exit 47 for NC-191 toward W Asheville go 0.2 mi total 248 rani 13. Turn left at Brevard Rd1NC-191 go 0.6 mi About 2 mins total 249 mi 14. Turn right at NC-34311Pond Rd go 0.3 mi Destination will be on the left total 249 mi 80 Pond Rd Asheville, NC 28806 These directions are for planning purposes only. You may find that construction projects, traffic, weather, or other events may cause conditions to differ from the map results, and you should plan your route accordingly. You must obey all signs or notices regarding your route. Map data ©2008 Tele Atlas http://maps.google.cornlmaps?f q&W1 en&geocode=&q=Raleigh,+North+Carolina+to+80... 11/2/2008 TABLE I SOUTHERN CONCRETE MATERIALS 80 POND ROAD ASHEVILLE, NORTH CAROUN- A Size of a Concrete Recycling System for Process Washwaterl Stormwater for a Reday Mix Concrete Plant w for a 25 yr, 24-hr Runoff Volume = Use SCS Peak Discharge dnage Area = 0.65 easy Or 28.314 sq ry_ vauan Dteoronce. 4 ft (Obtained from the site topo map) kgth = 220 ft (Obtained from the site topo map) 2.2 min (8.03a) 2% 88 (Table 8 03b) . "fall = 6 inches (Ref fig 8.03k) nfafl lrnonalty(Aahovflle)= 7 inRv (a.03f) soft Depth = 5.9 inches (Table 8,03c) • i Runoff Volume = Dr - unaN Depth CS 13 921 cu ft V sign Recycle pits to hold = 43,921 cu ft. A minimum of 2 pits with a txrfter of t additional pit for art»rgencles CIA 0' a 4.095 Peak rate of runoff in cubic feet per second Q2, - 25 Yr, 24-hr Discharge = C = 0 9 Runoff Coefficient i = 7 Average intensity of Rainfall in incheslhr for a storm dufa(ion-Irmo of concentration A = 0.65 fhaingae area for Weir t(x Dry Length of the weir = Capcaity of pits Pit 1.2 & 3 Each (Fiat Area Volume) 30L11 Q21 4. L= H= 0 4.095 =3.0 x L x (D.75) n 2 ft Pit 1,2 & 3 Each (Slope Area Volume) LwVhth of the weir (ft) Haight of the weir (ft) , L = 35 W . 20 Volumelpit = D= 6 or L = 21 fi W = 20 ft Valumelpit- D 6 ft or 0.5 ft 4,200 cubic feet. (cft) 12600 cubic feet. (Three pits) 1,260 cubic feet. 3780 Cubic feet. (Three pits) Total Pit Volume (CFT) = 16,380 cubic feet a 13,921 eublcfJA �os E a kw-,04-4J l i 12� Chalem Palkals, P[ CF' EngineefiNrirtq Tel: 704.541 4042 l�� CPEES Prgoct No. 11144M 1 I U /� r }i21 > l'� ) FIGURES Figure 1: Site Location Map Figure 2: Aerial View of Surrounding Properties around the Pond Road Plant Figure 3: Site Layout Map with Buildings, Dry Mix Concrete Plant, and Proposed Process Washwater ! Stormwater Recycle System Figure 4: Design Details of Proposed Process Washwater 1 Stormwater Recycle System Figure 5: Process Washwater and Stormwater Recycle System Construction Details Figure b: Truck Travel Path I I 082' 37' 0.00- Wi I I I 082' 36' 0.00- W E 082' 35' 0.00" WI r.s'ft. l ,y` ssv1p�jf�._OR Sm r' I_/. OPIA ZAN ` - _ `\" - i �mf 082. 37' 0.00" W ,ame: ASHEVILLE Date: 111312008 Scale: 1 inch equals 2000 feet 082' 36'I0.00" W 082' 35'I0.00" W Location: 035° 32' 44.7" N 082' 36' 10.2" W Caption: SITE LOCATION MAP SOUTHERN CONCRETE MATERIALS - POND ROAD FIGURE-1 JOB NO. 1114-003 aWeM. Inc ;,S �'i ► r °tiffs r r f_ r, Po TV ti a ?x All. b` ,�-d.G �� �.��,��1_i�y. �� � D ram-• �fYr�� _ _ � ,1� 1 J Mf-��•4 R' p• fi G� �<�J'4� � �. I��L•+•'.Jr ?: L��Y s 4..L ..�, c.!'a w�• .'����„' _ rye �-F•, f - 2• f++. ±," ' "-A-�� '.,, ,j�(]��5 S i^Tj +'. d--t - 'cam -��`.� fi ,. 3•'Fpj ��,-�, r b i �r.�,+��t 'X. v . � '�= •fir-, .�: <:����,, r. ,_�_. �, -�; � �, _ f_ i C R/W MONUMENT 2050 U.P. C I S C U P. \ U.P. �\ ZONE "X"(APPRO)(. LOCATI-9—N2040 —� ZONE "AE"(APPROX. LOCATION) 203 2o20 01 W N.C.G.S, MONUMENT" HOMI k1^0Tu - C77 S7Z� 11 NOTES: BASE MAP WAS SUPPLIED BY S,C.M,I S N, Z 2035.4' ZONE "X"(APPROX. LOCATION ZONE "AE"(APPROX, LOCATION) U.P. C �qL � L 0 T 5 89°-28'-50" E > G 15" CU1 3.48' INVERT ELEV G �� ATIDN ZO]6.46' S ~706 4 E , CONTA'NED 0' G AREA X) 0.65 AC \ 89 0.354 Ac. ���� \� �9, E Q 1 p 2040� R.R. SPIKE \ TCP V. = 040. 2040 \ \ 1 T EL - 20 \\ C \ \ v1 U.P. \ \ Z \ \\ \ \ \1 1 1 1 1 \ 1 1 I 2050 C U.P. J 1 11 1 1 431 7.701 Ac. R �M. 1 I c 1 4 o�D) 0 � j D / \ N 5 I L 2 0 CD205p l �� f � I O f1 1 I�1 J � jI11 fffffff 1 SEWER EASEMENT SEE D.B. 1303 PG. 29 AND D.B. 1247 PG. 651 1,5 1" EIP o, T� cn LEASINC AND EQUIPMENT SAES CO N D.B. 2556 PC. 192 Ir1 I > 3/4" HEX ROD f / i f fJ I I s I \ / o�/ 50 SE 2 WER EASEMENT SEE D. 1303�1IV 56'- W HENRY S. ANDERSON C� N D.B. 3200 P0. 710 r� V � 1 REVISINNS� nl z EAM 1-26 PAINT AND BODY, 1NC D.B. 1663 PC. 474 139.76'— ��`b < S 88°-41'-00" W �f I NO. 5 REBAR Al Pao C N C7 0) L M SCALE: 1" = 80' INITIALS I DATE PREPARED BY: CVP 11/07/08 DRAWN BY CAD 11/07/08 CHECKED BY: CVP 11/07/08 APPROVED BY CVP 1 11/07/ 88 FILE NAME XXX DRAWING TITLE: NC CONTOUR INTERVAL = 2'. TOPOGRAPHIC DATA ARE BASED ON NCGS GRID STATION "HOMINY", ELEVATION = 2070.53' Approved Stormwater Permit Documents Construction in accordance with these documents Is CA required by the stormwater permit. North Carolina ��,$064we • ' . rules require that the stormwater system designer O�•'OF.I,•r� tri3pect du„a ; certify conformity with the ?: QQ' SAL Y ' tans and specs; p a 19807 1 Permit # Date D byl4Q NC Division of afar Qualfty�' +! Sheet # Revision Date ❑VERALL L❑CATI❑N PLAN PROJECT: SOUTHERN CENCRETE MATERIALS INC. (POND ROAD PLANT) P.❑, BOX 5395 ASHEVILLE N.C. 28813 CHALAM PAKALA ENGINEERING AND ENVIRONMENTAL SOLUTIONS A Cost-Eft=ctive Solution Provider for Manufacturing Industries 10017 ALLYSNN PARK DR. TEL (704) 541-4042 CHARLNTTE, NDRTH CAROLINA 28277 FAX (704) 541-4043 (�3,01of PR❑JECT N❑.1 1114004 REV NC-1 I REV, DATE DRAWING NO,: DRAWING ,ISLAND NOTES: BASE MAP WAS SUPPLIED BY S C.M.I. EXIST sou ACKCONCRETE 7X19' \ � gas AREA SLOPE BOLLARDS SAC (TYP) I IBERM TO REDIRCT FLOW INTOPIT #1 OF EXIST / EXISTING CONCRETE GRAVEL STORAGE AREA � PREPARED BY: CVP 11/07/08 DRAWN BY: CAD 11/07/08 CHECKED BY: CVP 11/07/08 APPROVED BYJ CVP I 11/07/08 i 21' n 1, „ i i n, I-- n ri ,D M6„ ,,D i M,_6„ INSIDE DIMENSIONS LENGTH SECTION 3 5' 201 WIDTH SECTION SECTION CONCRETE PIT SCALE= 1/4' =1111 tr-r �n IL_ u,1_.. L,nI.n W" 1 ,_Lt I IVlf A -A tt`t In IC- U.L_ L_"L_F-I W m I IOG%f I IVI■ D-D III -TA �r�r „�� r��� SCALE= 1/4" =NTS NOTES BASE MAP WAS SUPPLIED BY S.C.M,I, TTT L iL L1IL. L_r-�_.I I W" I uGV IIWIT V V SCALE= 1/4' =NTS REVISI❑NS 01 01 HOSE 8" DIA CONC FILLED STEEL TUBE 4000 PS CONCRETE BOLLARD DETAIL SCALE= NTS SCALE: GROUND SURFACE 2 #4 BARS @ 12" ❑/C H❑RIZ❑NTAL #S BARS @ 18" ❑/C VERTICAL 12" REINFORCED CONCRETE WALL (3500 PS 6" CONCRETE SLAB 4" NO, 57 WASHED STONE, cti I-- EXTERI❑R WATERPR❑❑FPERIMETER J❑INT WALL 6" C❑NCRETE SLAB SEALANT GROUND 4" N❑ 57 WASHED STONE �6„ •, �i 2,5' 1' 3 5, #4 BARS (4) INTERIOR SLAB & W-ALL SECTION SCALE= NTS #4 BARS (3) 4 5 EXTERIOR FOOTING SECTION 1-1 SCALE- NTS CONSTRUCTION NOTES: 1. BOTTOM SLAB TO BR REINFORCED WITH 6" W 10 X 10 WWF. 2. COLD JOINTS IN WALL TO HAVE KEYWAY WITH 18" #4 LAP BAR. 3. SLAB AND INTERIOR WALLS TO BE SEALED WITH CONCRETE WATERPROOFING. ADDITIONAL NOTES: 1. COMPACTION OF SOIL TO 95% STD PROCTOR MAX DRY DENSITY, 2. CONCRF TF 4,000 P.S.I. COMPRESSIVE STRENGTH @28 DAYS 3. RFBAR GRADE 60 4. CONSTRUCTION QUALITY CONTROL T'-STING TO INCLUDE SUBGRADE DENSITY TESTING, PROOF ROLLING OF SUBGRADE, SLAB REINFORCEMENT INSPECTION, CONCRETE THICKNESS MEASUREMENT, AND CONCRETE STRENGTH TESTING. ALL TEST RESULTS AND JUDGEMENT IS THE RESPONCIBILfTY OF THE OWNER. 5. HAND RAIL DESIGN AND INSTALLATION IS THE RESPONSIBILITY OF THE OWNER. 6. SUMP PUMP, PIPING AND ELECTRICAL WORK FOR SUMP PUMP IS THE RESPONSIBILITY OF THE OWNER, 7. ALL WALLS ARE REINFORCED AND CONCRETE POURED 8. POND LEAK TESTING IS THE' RESPONSIBILITY OF THE OWNER. 9, ALL BOUNDARIES OF CONSTRUCTION ACTIVITY/DISTURBED AREAS SHALL BF PROTECTED WITH SILT FENCE AS SHOWN ON SILT FFNCE CONSTRUCTION DETAILS, 8' I'- ►SOMETRIC VIEW SCALE= N,T,S, INITIALS I DATE PREPARED BY: CVP 11/7/08 DRAWN BY: CAD 11/7/08 CHECKED BY: CVP 11/7/08 APPROVED BY1 CVP 11/7/08 FILE NAME:XXX 12 GAUGE 4' X4' OR 2" X4' WLLDED WIRE HOOKED NOTES: 1) TOTAL DRAINAGE AREA EL❑WING TO SILT ONTO PREFORMED CHANNELS ON METAL POSTS, OR FASTENED FENCE MAY NOT EXCEED 1 ACRE. TO CEDAR ❑R WOOD POSTS W/ NO, 8 STAPLES. 2) SILT FENCES SHOULD NOT BE USED AT PIPE OUTLETS ❑R 1N AREAS OF CONCENTRATED FLOW (CREEKS, DITCHLINES, SWALES ETC.) ULTAVI❑LET RESISTANT (BLACK) MIRIFI FABRIC ❑R EQUIVALENT SECURED TO WIRE W/METAL MPS' CLIPS OR WIRE AT 8' OFF CENTER MAX. SEDIMENT STORAGE LEVEL. REMOVE I SEDIMENT WHEN THIS LEVEL IS REACHED OR AS DIRECTED BY CONVERSION INSPECT❑R. �NC� SHEET DRAINAGE (❑NLY) EL W OF ti l l ENS Sl SE�ZM NATURAL GRADE TO INCREASE STORAGE _ CAPACITY AND PROLONG THE LIFE OF I_ THE SILT FENCE, IT IS GENERALLY ADVISABLE TO DIG A SEDIMENT PIT I:7 IN FRONT OF YOUR SILT FENCE _CARRY APPROX. I' OF FABRIC INT❑ TRENCH, WHENEVER P❑SSIBLE. COVER W/S❑IL & TAMP BACKFILL. SILT I LT FENCE CARRY 0.5' OF WIRE INT❑ TRENCH. METAL, CEDAR OR 4' X4' TREATED \,I POSTS AT 10' O.C. MAX. CEDAR & WOOD POSTS SHOULD BE 3' DEEP MIN. SILT FENCE DETAIL SCALE- N.T.S, Approved StOrrrlWater PerMilt DOCuff ieniz. Construction in accordance with these documents is required by the stormwater permit- North Carolina F rules require that the stormwater system des gne, 3 kl CFI £FI plan Conformity with the R _ RCN S�pE SIN \ \ Pa it # � 30�1 Date L/ COIF£ 1Mq € \ D NC Division of Ilia er?Iitv NI S pN \\ Revision Date —� \ 4" to 6" ,,,lll,IEL—� SECTION D-D SCALE= N.T,S, a•69K �f�a®! SEAL U DRAWING TITLE: PROCESS WASHWATER ANI) ST❑RMWATER RECYCLE SYSTEM C❑NSTRUCTI❑N DETAILS PROJECT: SOUTHERN CONCRETE MATERIALS INC, (POND ROAD PLANT) PROJECT N❑.: P-0 B❑X 5395 1114-004 ASHEVILLE NZ, 88813 REV N❑.: REV. DATE: CHALAM PAKALA ENGINEERING AND ENVIRONMENTAL SOLUTIONS DRAWING N A Cost -Effective Solution Provider For Marufac-turing Industries ]DRAWING 10017 ALLYS❑N PARK DR. TEL (704) 541-4042 CHARLUTTE, N❑RTH CAR❑LINA 28277 FAX (704) 541-4043 HYDRANT %JIN r-% V L-L I Ml\f\II VV U.P. C U.P. 21 g 35, � C o 0 SEA 12 W Ease ENT SEA PG 29 NOTES: BASE MAP WAS SUPPLIED BY S.C.M,I. €I i E REVISIONS: �20 i� CN P�-P � FUEL PUMP ISLAND Cj 00 0/� � C U.P. r vU.P. e � EXIST \ �� WELL EXIST 1 I CONCRETE 111/1� ;;u AREA CON cRE rE Wq� C i T Yp. CONCRETE S.S.M.H. SOIL -M I l TRUCK PULLS UP ��AND BACKS IN I 00 I I I I � I 00 EXiSING 44 GRAVEL STORAGE yy EXIST CONCRETE AREA SCALE: 401 INITIALS DATE PREPARLD BY: CVP 11/07/08 DRAWN BY: CAD 11/07/OB CHECKED BY: CVP 11/07/08 APPROVED BY CVP 11/07/08 FILE NAME: XXX "GRAVELED SEDIMENT BAST 24" CMP OVERFLOW FABRICATION AREA x'wrovedSiormwater Permit Do Mont Constru n in aocortiance with thes ocument requ' by the stormwater permit. rth Carotins s re ire th a stormwater stem designee Metiaa; ce conformity win / errnit # Date v7! +I by v NC Division of ter ua! Sh t # Revlslon Date n DRAWING TITLE: TRUCK TRAVEL PATH PROJECT SOUTHERN=❑NCRETE MATERIALS INC. (POND ROAD PLANT) P.O. BOX 5395 ASHEVILLE N,C, 28813 CHAL.AM PAKALA ENGINEERING AND ENVIRONMENTAL SOLUTIONS A Cost-Ef=ective Solution Provider For Manufacturing Industries 10017 ALLYSON PARK DR. TEL (704) 541-4042 CHARLOTTE, NORTH CAROLINA 28277 FAX (704) 541-4042 i SEAL 19807 ►�M, V. _ 1t'j4 PROJECT NO.: 1114-004 REV. NO.: REV. DATE DRAWING N❑,: DRAWING 6 ATTACHMENTS Attachment A: Runoff Volume and Weir Design Calculations with Backup Attachment B: Laboratory Analytical Results Supplied by Environmental Testing Solutions Attachment C: Manufacturer Supplied Literature for Carbon Dioxide System Attachment D: NC DENR — Division of Water Quality Stream Classification Table for Buncome County TABLE I SOUTHERN CONCRETE MATERIALS 80 PO,," ROAD ASHEVILLE, NORTH CAROLINA Size of a Concrete Recycling System for Process Washwater/ Stormwater for a Reday Mix Concrete Plant to for a 25 yr, 24-hr Runoff Volume = Use SCS Peak Discharge aroge Area = 0.65 acres or 28,314 sq tL vadon Difference= 4 a (Obtained from We site topo map) tptlt = 220 ft (Obtained from the site taps map) = 2.2_ min (8.03a) pe 2% 98 ([able 8.03b) nfaa a a inches (Ref Fig 8.03k) nfall bftnslty (Ashevllla) = 7 infir (8.03f) lolf Depth = 5.9 inches (Table 8,03c) Runoff Volume = Drainage Area x Runoff Depth 13,921 a, ft sign Recycle pits to hofd = 13,921 cu R.. A minfmunt of 2 pies with a buffar of 1 admtional pit for trim gencles CiA C6 = 4.095 Peak rate of Runoff in cubic feet per s000nd Qzs - 25 Yr, 24-hr Discharge = C = 0.9 Runoff Coefficient i = 7 Average guensay of Rainfall in mxheskw low a storm durwwrtime of concentration A = 0.65 Draingae area for Weir for Qa = Length of the weir = Capcaity of pits Pit 1,2 & 3 Each (Flat Area Volume) 3.0LH' Oa = 4.095 L = Lenghth of the werr (ft) H = 0.75 Height of the weir (ft) Assume 0.5 ft 4.095 =3,0 x L x (0.75) 2 n Pit 1,2 S 3 Each (Slope Area Volume) Total Pit Voluble (CFT) = Chalam Pakata. PE CP Engineering Tel: 704-5414042 CPEES Proiep No 1114-003 L = 35 ft W = 20 ft V0lumelp1t = D= 6 ft or L- 21 ft W = 20 ft Volumelpit = D 6 ft or 4,200 cubic feet. (cft) 12600 cubic feet. (Three pits) 1,260 cubic feet. 3780 cubic feel. (Three pits) 16,380 moc feet > 13,921 cubic foal 0 m M 0 a� 0 c 0 a m 0 Er m Y m 0 E 0 a) z H (ft) rnn Note: Use nomograph Tc for natural basins with well-defined channels, for overland flow on bare earth, and for mowed -grass roadside channels. For overland flow, grassed surfaces, multiply Tc by 2. For overland flow, concrete or asphalt surfaces, multiply Tc by 0.4. For concrete channels, multiply Tc by 02. Figure 8.03a Time of concentration of small drainage basins. T-'min) 200 I00 50 10 0 I 8.03.4 Appendices 20 15 10 8 L 6 a;i 4 t U b 2 :in m t 0.8 c 0.6 0A 0.2 0.1 i 5 Ashevi f0 20 40 60 Minutes Figure 8.031 Rainfall intensity duration curves —Asheville. C.. 5 to 20 Minutes Figure 8.03g Rainfall intensity duration curves —Charlotte. s Duration Hours 40 60 2 3 4 6 6 12 18 24 Hours Duration 8.03.7 0 Table 8.03b Runoff Curve Numbers (CN) Hydrologic Sall Group Land Use/Cover Cultivated land without conservation 72 81 88 91 with conservation 62 71 78 81 Pasture land condition 68 79 86 89 Faipoor rcondition49 69 79 84 good condition 39 61 74 80 Meadow good condition 30 58 71 78 Wood or forest land Thin stand - poor cover, no mulch 45 66 77 83 Good stand - good cover 25 55 70 77 Open spaces, lawns, parks, golf courses, cemeteries, etc. good condition: grass cover on 75% or more of the area 39 61 74 80 lair condition: grass cover on 50 to 750% of the area 49 69 79 84 Commercial and business areas (85% Impervious) 89 92 94 95 Industrial districts (72% Impervious) 81 88 91 93 Residential:' Development completed and vegetation established Average lot size Average % Impervious 1/8 acre or less 65 77 85 90 92 1 /4 acre 38 61 75 83 87 1 /3 acre 30 57 72 81 86 1/2 acre 25 54 70 80 85 1 acre 20 51 68 79 84 2 acre 15 47 66 77 81 Paved parking lots, roofs, driveways, etc. 98 98 98 98 Streets and roads paved with curbs and storm sewers 98 98 98 98 gravel 76 85 69 91 dirt 72 82 87 89 Newly graded area 81 89 93 95 Residential: Development underway and no vegetation Lot sizes of 114 acre 88 93 95 97 Lot sizes of 1/2 acre 85 91 94 96 Lot sizes of 1 acre 82 90 93 95 Lot sizes of 2 acres 81 89 92 94 'Curve numbers are computed assurring the runoff from the house and driveway is directed toward the street. source: USDA•SCS Q W A 6 _ �..noMrcri. 7 8 25-year 1 day precipitation (inches) Sale In MH" D 23 Sd 7S too RAINFALL DATA MAP S 5T. .5 S, 01 w.r.yG tee..•. 6 �6 5.5 b _ Fti �,OCMINf•N. sw�,JF oN� ?..F. GUNFOOD 0, �. ! •,IM MLA �N 1— ' .NpMFN � [NITN.N UN -ON .NSOM __ _ 1—j X a �4 a 8.5 0 Appendices Table 8.03c Runoff Depth b. Determine runoff depth (in inches) from the curve number and rainfall MM M TV U11. Ralntall Curve Number (CN)r (Inches) 60 65 70 75 80 85 90 95 Q 8 1.0 0.00 0,00 0.00 0.03 0.08 0.17 0.32 0.56 1.2 0.00 0.00 0.03 0.07 0.15 0.28 0.46 0.74 1.4 0.00 0.02 0.06 0.13 0.24 0.39 0.61 0.92 1.6 0.01 0.05 0.11 0.20 0.34 0.52 0.76 1.11 " 1.8 0.03 0.09 0.17 0.29 0.44 0.65 0.93 1.30 2.0 0.06 0.14 0.24 0.38 0.56 0.80 1.09 1.48 2.5 0.17 0.30 0.46 0.65 0.89 1.18 1.53 1.97 3.0 0.33 0.51 0.72 0.96 1.25 1.59 1,98 2.44 4.0 0.76 1.03 1.33 1.67 2.04 2.46 2.92 3.42 5.0 t.30 1.65 2.04 2.45 2.89 3.37 3,88 4,41 6.0 1.92 2.35 2.80 3.28 3.78 4.31 4.85 5,40 To 2.60 3.10 3.62 4.15 4.69 5.26 5.82 6.40 8.0 3.33 3.90 4,47 5.04 5.62 6.22 6.81 7.39 9.0 4.10 4.72 5.34 5.95 6.57 7.19 7.79 8.39 10.0 4.90 5.57 6.23 6.88 7.52 8.16 8.78 9.39 11.0 5.72 6.44 7.13 7.82 8.48 9.14 9.77 10.39 12.0 6.56 7,32 8.05 8.76 9.45 10.12 10.76 11.39 To obtain runoff depths for GN's and other rainfall amounts not shown in this table, use an arithmetic interpolation. The volume of runoff from the site can be calculated by multiplying the area of the site by the runoff depth. Step 4. Determine the peak rate of runoff for the design storm by adjusting for watershed shape as follows: a. Determine an "equivalent drainage area" from the hydraulic length of the watershed using Figure 8,03n. Hydraulic length is the length of the flow path from the most remote point in the watershed to the point of discharge. b. Determine the discharge (efs/inch of runoff) for the equivalent drainage area from Figure 8.03o through 8.03q: Figure 8.03o - for average watershed slopes 0-3% Figure 8.03p - for average watershed slopes 3-7% Figure 8.03q - for average watershed slopes 8-50% Calculate the peak discharge, 01, of the equivalent watershed by rnuld- plying equivalent watershed area by runoff from Table 8.03c in Step 3b. c Environmental Testing Solutions, Ine- PO Roo 7565 Phone: (82M) 350-4364 AsWille. NC 28802 Fax: (828) 350-9368 Certificate of Analysis Project name: Southern Conatcte Material. Project number: 070626M2 Collection date: 2S-Jun-07 Date received: 26-Ju►-07 Results: Sample identification: SC—M - 10 A Before Sample munher: 40191 Parameters M Iliad RqWk RL Units a Analyst Footnates A atn SdUrmb1a Solids EI A 160.5 5.8 m_ULAtr 7h-Jrm KHK pH 150.1 11.9 S.U. 7Atwrm KEK i Solids. Total Suspended EIIA 160.2 3201.13 .0 m-JL n.r.-m KEK Results: Sample identification: -tOB=After Sample number: 40192 Parameters Method ha(eyzed t RL Units Anal)U Footnotes Anal Sealeablc Solids UA 160.5 0.11 mg/Ur ]rho-m KEK pl1 EPA 150.1 (0,11 8.6 S.U. zw, m KEK Solids. Total Snspmdul EPA 160.2 20 2.0 nrJL v )..-w KEK Results: Sample identification: SCM - Fast Sample number: 40193 Parameters Aletbod Result RL, L4uts A;W11d Anal)s FOatuate$ Settl blaSolids EPA 160.5 <0.1 0.1 ms/LJhr wma m KEK PH EPA 150.1 7.2 S.U. z&iu.m KEK I Solids, Total Suspended EPA 160.2 16 2.0 0 :t 7uum KEK i natnetrs: 1. Am4-Z xl out of EPA ruxotttmended hold time. W" Cuttitication Numhot: 600 NC Dfinkinan Watts Certification Number: 37786 FORTRANS pH CONTROL SYSTEMS FORTRANS pH CONTROL SYSTEMS are completely automatic. They continually monitor/test the pH of the influent water and compares it to the PH setting of the control unit. If a change in pH is detected, the controller activates the solenoid valve for the CO2. The pH adjustment chemical is then fed to the return side of the circulation pump until the PH is again at the proper level set at the controller. The unit will continuously circulate the water until a change in pH is detected and the treatment cycle begins once again. The unit also features a digital PH meter connected to a probe in the sample cell to ensure unit is functioning properly and that the correct pH level is maintained. The pH CONTROL SYSTEMS are designed to treat and maintain a specified pH level in a body of water usually 100,000 gallons or less to allow the permitted discharge of treated water to the environment. Permits must be obtained from the local governing agency to allow any discharge to the environment. Treated water may be used for wetting of rock and/or dust control to aid compliance with stormwater run off regulations. Treated water may also be used in water recycling systems. These systems offers precise monitoring and control of the pH in settling basins, lagoons and other outfall containment devices. -The pH CONTROL SYSTEMS will treat up to 57 gallons per minute - max 20' head pressure. Unique water circulation design eliminates the need for separate neutralization tank. -1.5" quick connect fittings on inlet and return for easy hook-up. The standard unit is equipped with 2-30' sections of 1.5" flexible hose with quick connect fittings. Inlet and outlet fittings at the basin or lagoon are per our specifications. -Unit is shipped completely assembled. The chemical controller is preprogrammed to maintain a PH of 7.5. Just attach hoses and PVC fittings. •1 year warranty on all component parts and housing. 40 E PERFECT SOLUTION FORTRANS, INC. - 7400 C. Siemens Rd. - Wendell N.C. 27591 1.866.365.8760 • 1.919.624.8832 info Ofortrans.b iz • www.fortrans.biz The Model 5000-S pH Control System is a self- contained pH monitor and control system housed in a weatherproof facility with lockable doors and adequate space to house the instrumentation and circulation pump. The system is configured for carbon dioxide gas operation. The Model 5000-SK Skid Mounted pH Control System contains all of the instrumentation and components of the regular Model 5000-S System and is shipped on a 44"x47' plastic skid with a durable solid plastic surface. The Control Panel is provided loose with all components installed and is designed to be attached to an interior wall of the control building. The tubing to the sample cell and from the CO2 solenoid valve to the Sparger stone feed assembly must be inserted after receipt of the unit. The system features a 115V-30Amp Breaker Box and two GFCI receptacles. The system is shipped with a CO2 feed system. �-3 .�r�H~u'�M ENGINEERS CEKTIFICAT]rON OF THE MOREL 5000-S PH MONITORING AND CONTROL SYSTEM M. G.C. Environmental, Inc. P.O. Box 40125 Raleigh, NC 27629 For: Fortran Inc. P.O. Box 40 Wendell, NC 27591 Dated: September 11, 2003 .......... .1.. .*•4 r A G. C. Environmental, Inc. 5312 Pinewood Court Wendell, NC 2759110. C? (919) 266-2864 Q v 7 S September 11, 2003 PURPOSE G.C. Environmental, Inc., was contracted to provide an engineers review and certification that the Model 5000-S pH Monitor and Control System manufactured by Coastal Carolina Supply in Morehead City, NC, could effectively provide on a continuous basis, an average pH range of 6-9 units on the supernate layer of a stormwaterhinse water sedimentation basin typically found at Redi-mix concrete facilities. SCOPE OF WORK During the week of August 11, 2003, G.C. Environmental, Inc., witnessed the operation of the Model 5000-S self-contained pH Monitoring and Control System at a Redi-mix plant located in Durham, NC. During the two (2) day test program, measurements were made within the facilities stormwater/rinse water sedimentation basin for pH, temperature and depth (both supernate and sludge). During the first day of testing, the basin was found to be heavily loaded with solids and adjustments were made to the solids blanket to complete testing the following day. TEST METHODOLOGY A primary sedimentation basin located at a Redi-mix concrete plant located in Durham, NC was treated utilizing the Model 5000-S pH Monitor and Control System. During the test program, the basin was, on a semi -continuous basis, being fed rinse water from the exterior cleaning of cement trucks. Measurements for pH, temperature, supernate and sludge blankets were made within the sedimentation basin. Initial pH measurements showed pH levels of at least 12.0 units. The sedimentation basin was rectangular in shape with concrete walls and bottom. The basin ranged in depth of I" at the inlet to approximately 3' at the deepest point. Sludge measurements within the basin showed that at least 2/3 of the basins depth was comprised of sludge and the remainder supernate. The Model 5000-S pH Monitor and Control System was set up at the rectangular sedimentation basin with the intake and discharge hoses situated at opposite ends of the basin. Both the intake and discharge lines were set at depths within the supernate layer of the basin. A clockwise flow pattern was established once the unit began operation and pH and temperature measurements were made at several locations throughout the supernate layer of the sedimentation basin. Approximately eighteen (18) pH and temperature measurements were collected with a mean pH value of 8.56 and mean temperature values of 30.94 "C. The pH system was left to run essentially on a continuous basis over a four (4) hour period. An estimated volume existing within the sedimentation basin was 25, 000 gallons with a little over 8000 gallons consisting of relatively clear supernate. The amount of 25% Sulfuric acid (H..,SO,) used to treat the sedimentation basins supernate was approximately 18-20 gallons. MODEL 5000-5 PH MONITOR AND CONTROL SYSTEM The model 5000--5 pH Monitor and Control System is comprised of a Hayward Power Flow H (3/4 hp, 56 GPM) centrifugal pump which delivers raw water to a completely contained pH sensor connected to a pH meter equipped with control relays which operate two (2) stenner (60 GPD) acid injection pumps. The acid 25% H2SO4 is injected into the pump discharge line which empties into the sedimentation basin.. Sulfuric acid is delivered to the system by 15 gallon carbuoys located outside of the fiberglass weatherproof enclosure which houses all of the aforementioned equipment. On top of the enclosed is an alarm light which is tied into the pH meter which is activated when pH levels exceed 8.5 pH units or are below 6.0 units. CONCLUSION 1. The Model 5000-S pH Monitor and Control System is an effective system for the pH balancing of sedimentation basins which are used to collect storrnwater runoff and rinse water, commonly found at Red -mix concrete plants. 2. During the test program an average pH of 8.54 units was measured in the subject sedimentation basin with a range of 7.95 to 9.34 measured. 'r 3. Sludge levels existing within the rectangular sedimentation ranged from 6.0 inches to 2.0 feet. PH values after pH stabilization at the sludge/supernate interface were approximately 12.0 units 4. For this test program, approximately 180 mg/l of sulfates were added to the sedimentation basin as a result of pH adjustment with 25% sulfuric acid. 5. The 5000-5 pH Monitor and Control System is fully automated and provides a pH adjusted waste water which could effectively be reused within the Redi-mix concrete industry_ Attachment D NC DENR — Division of Water Quality Stream Classification Table for Henderson County Name of Stream Description Cvrr. Class Date Basin Stream Index # Raoul Branch From source to Four C 07/01/73 French 6-72-2 Mile Branch Broad The Lagoon Entire lake and C 07/01/73 French 6-73 connecting stream to Broad French Broad River Plateau Branch From source to French C 09/01/74 French 6-74 Broad River Broad Long Valley From source to French C 07/01/73 French 6-75 Branch (White Broad River Broad Creek) (Westerly Lake) Long valley Lake Entire lake and C 07/01/73 French 6-75-1 connecting stream to Broad Long Valley Branch Hominy Creek From source to French C 09/01/74 French 6-76 Broad River Broad Trent Branch From source to Hominy C 09/01/74 French 6-76-10 Creek Broad Ragsdale Creek From source to Hominy C 09/01/74 French 6-76-11 (Lake Ashnoca) Creek Broad Canie Creek From source to Hominy C 09/01/74 French 6-76-12 Creek Broad George Branch From source to Hominy C 09/01/74 French 6-76-3 Creek Broad Webb Branch From source to Hominy C 09/01/74 French 6-76-4 Creek Broad South Hominy From source to Hominy C;Tr 07/01/73 French 6-76-5 Creek Creek Broad Saw Branch From source to South C;Tr 07/01/73 French 6-76-5-1 Hominy Creek Broad Sams Branch From source to South C;Tr 07/02/73 French 6-76-5-2 Hominy Creek Broad Stony Fork From source to South C;Tr 07/01/73 French 6-76-5-3 Hominy Creek Broad Wayah Branch From source to Stony C;Tr 07/01/73 French 6-76-5-3-1 Fork Broad Chestnut Creek From source to Stony C;Tr 07/01/73 French 6-76-5-3-2 Fork Broad McKinney Creek From source to Stony C;Tr 07/01/73 French 6-76-5-3-3 Fork Broad Warren Creek From source to South C;Tr 07/01/73 French 6-76-5-4 Hominy Creek Broad White Rock Branch From source to Warren C;Tr 07/01/73 French 6-76-5-4-1 Creek Broad Glady Fork From source to South C;Tr 07/01/73 French 6-76-5-5 Hominy Creek Broad Hogpen Branch From source to Glady C;Tr 07101/73 French 6-76-5-5-1 Fork Broad Ballard Creek From source to Glady C 09/01/74 French 6-76-5-5-2 Fork Broad Turkey Branch From source to Ballard C 09/01/74 French 6-76-5-5-2-1 Creek Broad Page 4 of 14 Permit Application for Authorization• to Construct (A to C) a Process I Stormwater o Recycling System NPDES General Permit No.: NCG140000 t' Certificate of Coverage: NCG140309 Prepared for: -Southern Concrete Jwateria& = Pond Road PCant 80 Pond Road, Asheville, Buncombe County, North Carolina 28806. CAR p SEAL_= ` � 19807 tbj3,01 $ pA CPEES Project No. 1IM-003 10 October 30, 2008 a Approared Stot:mwatsr permit oocuments • Construction in accordance with these documents is required by the stormwater permit. North Carolina . ruses require that the stormwater system designer n; certify contormity with tho plans and speow she ' Prepared by. Permit G/ 10 bate b NC Division of Water QualMy Chalam Pakala Engineering and E mentaMol wMate • 10017 A[lyson Paris Dr., Charlotte, North Carolina 28277 • 'Tel (704) 541. 4042 / Fax: (704) 541-4043 Email: cvpakala@carolina.rr.com ' " i � j � � A _ � D r . - 0 • � � - / Q _ � � � � � a . p 4 w � s � C - _ �� , 4 . .. f , + v p n r ` 0 � - . d Permit Application for Authorization to Construct (A to Q a Process /Stormwater Recycling System NPDES General Permit No.: NCG140000 Certificate of Coverage: NCG140309 TABLE OF CONTENTS 1.0 FACILITY DESCRIPTION..............................................................................................1 2.0 FACILITY OPERATIONS................................................................................................1 3.0 PROCESS WASHWATER CALCULATIONS..............................................................2 4.0 STORMWATER RUNOFF CALCULATIONS FOR A 25 YEAR AND 24-HR RAIN EVENT....................................................................................................................................... 3 5.0 pH ADJUSTMENT FOR THE RECYCLE SYSTEM....................................................3 6.0 STORMWATER / PROCESS WASHWATER RECYCLE SYSTEM DESIGN AND CONSTRUCTION DETAILS„...............................................................................................4 7.0 A to C CONSTRUCTION PERMIT APPLICATION....................................................5 TABLES Table 1: Runoff Volume Calculations for a 25 yr, 24-hr Storm Event FIGURES Figure 1: Site Location Map Figure 2: Aerial View of Surrounding Properties around the Asheville - Pond Road Plant Figure 3: Site Layout Map with Buildings, Dry Mix Concrete Plant and Proposed Location of Process Washwater / Stormwater Recycle System Figure 4: Design Details of Proposed Process Washwater / Stormwater Recycle System Figure 5: Process Washwater and Stormwater Recycle System Construction Details Figure 6: Truck Travel Path ATTACHMENTS Attachment A. Runoff Volume and Weir Design Calculations with Backup Attachment B: Laboratory Analytical Results Supplied by Environmental Testing Solutions Attachment C: Manufacturer Supplied Literature for Carbon Dioxide System Attachment D: NC DENR — Division of Water Quality Stream Classification Table for Buncombe County CP Engineering and Environmental Solutions i A to C Permit Application Tel: (704) 541-4042 Southern Concrete Materials —Pond Road 80 Pond Road Permit Application, for Authorization to Construct (A to C) a Process I S'tormwater RecyclingSystem NPDES General Permit No.: NCG140000 Certificate of Coverage: NCG140309 1.0 FACILITY DESCRIPTION Southern Concrete Materials -Pond Road Plant located at 80 Pond Road, Asheville, Buncombe County, North Carolina, is a dry batch ready mix concrete plant for commercial supply. The primary Standard Industrial Classification (SIC Code) for the facility is 3273 (Ready Mixed Concrete). The approximate location of the facility on a US Geological Survey Map is provided on Figure 1. The geographic site location can also be given as 350 32' 44.5" North Latitude and 820 36' 10.5" West Longitude. The subject facility is surrounded by light manufacturing and thick wooded area on north, east and south sides of the property with Hominy Creek. The west is north side of the property has light manufacturing and a highway. The details of surrounding properties are displayed on Figure 2. The Pond Road Plant occupies approximately 7.701 acres of land and out of which, approximately 1.1 acres of area is paved with concrete. Hominy Creek enveloping the property on north, east and south of the property carries the stormwater from the subject facility. Based on my discussion with NC Division of Water Quality, it is our understanding that Hominy Creek is classified as Class C ® (see attached table obtained from NC DENR — Division of Water Quality Section web site for details -Attachment D). The stormwater from the facility is carried to Hominy Creek via swales and sheet flow (Figure 3). The Pond Road Plant consists of an office building, a ready mix concrete plant next to the office building, cement and fly -ash silos, an aboveground fuel oil tank with a secondary containment, an enclosed shed, a concrete secondary containment for admixture tanks, sand and gravel storage areas, and a concrete truck drum wash area. Pond Road Plant has approximately 9 to 10 trucks and operates 8 hrs/day, 5 days/wk and 30 to 50 wks/year, , depending upon weather conditions. 2.0 FACILITY OPERATIONS The facility operations include. a dry batch concrete plant with vacuum system for dust control (no water sprinklers are attached to the concrete truck loading chute for dust suppression), cement and fly -ash silos with a dust control central vacuum system, sand and gravel storage areas with no water sprinkler system (dry storage areas) and a truck washing area. Based on the request from the user, the sand, gravel, and cement and flyash are loaded into a weigh scale which drops the dry mix into cement trucks as a dry batch concrete mix. During the truck loading process, vacuum is applied around the loading chute to suppress any cement / particulate dust that is being generated. The dust extracted from the loading chute area is processed through a NC DENR Division of Air Quality permitted bag filter system before released into the atmosphere. The loaded cement truck with concrete mix is brought to a truck CP Engineering and Environmental Solutions I A to C Permit Application Tel: (704) 541-4042 Southern Concrete Materials —Pond Road 80 Pond Road 0 washing area for a surficial wash before goes out for the delivery. Occasionally, any left over concrete in the concrete drum is washed of at the plant in a truck washing bay. Thus, process water is being generated at the plant for either recycling or disposal. Based on our understanding of the facility operations, all chemical and oil tanks / drums are located in secondary containment dikes with dike valves in shut position. Therefore, no oily water or stormwater contaminated with chemicals are being released to the environment from the facility. The facility has a NPDES General Permit (NCG140000) with a certificate of coverage NCG140309 to discharge stormwater from the subject facility operations. To meet the NPDES General Stormwater Permit requirements, a Stormwater Pollution Prevention Plan (SWPP Plan) with Best Management Practices for potential stormwater pollutant sources was prepared and implemented at the site in September 22, 2006. In addition, all truck drums and drum chutes are washed at the end of the day before parked for good. Therefore, the locations where process washwater is being generated at the plant are: Surficial cleaning of the drum before leaving the site, Cement drum washing if left over concrete is brought back to the plant; and Drum and drum chutes cleaning at the end of the day- 3.0 PROCESS WASHWATER CALCULATIONS Based on our discussions with the Asheville - Pond Road Plant Manager, it is our understanding that approximately 40 to 45 batches per day are completed in the summer time and 25 batches per day are completed in the winter time using 9 to 10 trucks. Approximately 5 to 10 gals of water are used for surficial washing of the truck per batch, Approximately 5 to 10 gals of water are used to wash drum chutes per truck per day at the end of the day. Approximately 200 gals per day per drum are used to wash at the end of the day. Description of Operation Unit Total 4 Trucks (worst -case) trucks 10 # Batches per day using 10 trucks (worst -case scenario -summer time) Batches 45 Surficial cleaning 10 galsAbatch 450 Chute cleanin at the end of the day 10 gals/truck 100 Drum cleaning at the end of the day 150 gals/truck 1,500 Leftover concrete washing from the drum (5 batches 200 gals/batch 1,000 Total als/dajL= 3,050 CP Engineering and Environmental Solutions 2 A to C Permit Application Tel: (704) 541-4042 Southern Concrete Materials —Pond Road 80 Pond Road 4.0 STORMWATER RUNOFF CALCULATIONS FOR A 25 YEAR AND 24-HR RAIN EVENT According NC DENR-Division of Water Quality NPDES General Stormwater Permit requirements, recycle systems are considered wastewater treatment per 15A NCAC 2H .0203 and all wastewater discharges must meet a total suspended solids (TSS) limit of 30 mg/l, a settleable solids (SS) limit of 5 ml/l, and pH between 6-9 SU or must demonstrate that the recycle system has sufficient capacity to contain 25-year, 24-hr rainfall event plus one foot of freeboard under the design operating conditions. To obtain an economic and workable solution to the proposed recycling system design, the truck washing operations and process washwater generating points are all brought to one location to reduce the drainage area for 25-yr, 24-hr calculations. Approximately 27,572 sq ft or 0.65 acres of area including the pit system designed for the process / stormwater recycling is expected to contribute to the process washwater from the facility (Figure 3). All washing operations beyond this designated area are prohibited at the facility and the drivers will be trained to adhere to this new policy for ineeting the Stormwater regulations. CPEES has performed stormwater calculations for a 25-yr, 24-hr rain event for 0.65 acres and approximately 13,921 cubic feet (cft) of runoff capacity is required to hold the designed rain event. The runoff volume and weir design calculations are provided in Attachment A. ® Please note, during a rain event, no plant operations will be conducted. Therefore, no washwater is accounted for in the proposed recycle system design when 25-yr, 24-hr rain event for stormwater is considered. 5.0 pH ADJUSTMENT FOR THE RECYCLE SYSTEM Southern Concrete Materials has been currently using Carbon Dioxide Systems to control pH in the process washwater generated at some of their facilities. It is proven very efficient to control pH with carbon dioxide since carbon dioxide when mixed with water forms carbonic acid. It is a weak acid which would neutralize alkaline solution (cement wastewater) generated at the plant. Carbonic acid, has the ormula H2CO3. It is also a name sometimes given to solutions of carbon dioxide in water, which contain small amounts of H2CO3. The salts of carbonic acids are called bicarbonates (or hydrogencarbonales) and carbonates. It is a weak acid. Carbon dioxide dissolved in water is in equilibrium wish carbonic acid: CO2 f H2O ^ H2CO3 1: Wikipedia: h :i/en.wiki dia.or wiki/Carbonic acid CP Engineering and Environmental Solutions 3 A to C Permit Application Tel: (704) 541-4042 Southern Concrete Materials —Pond Road 80 Pond Road In addition, it has also proven to be having a secondary benefit in reducing total suspended and settleable solids concentration considerably from the process washwater and stormwater recycle system. A copy of analytical test results obtained from NC certified laboratory, Environmental Testing Solutions, for a similar site - SCM Biltmore Plant in Biltmore, North Carolina is provided in Attachment B for the State review. The manufacturer supplied literature for Carbon Dioxide System is provided in Attachment C. 6.0 STORMWATER / PROCESS WASHWATER RECYCLE SYSTEM DESIGN AND CONSTRUCTION DETAILS The proposed recycle system is designed to capture all process washwater and stormwater from a 25-yr, 24-hr rainfall event from the subject plant wash areas. The recycle system is designed to hold entire runoff amount from the designed storm event. The approximate drainage area involved in the process washwater is estimated to be 0.65 acres (Figure 3). The 25 year, 24-hr runoff volume from this drainage area is estimated to be 13,921 cft. A recycle system designed for the estimated runoff is a three pit system (Figure 4). The total volume of all the three pits were designed to be sufficient to hold the entire 25 year, 24-hr run off volume. Please note SCM strives very hard to control and mitigate migration of any contaminated stormwater from the facility to the waters of US. Appropriate slopes/berms/walls are proposed to isolate the 0.65 acres of drainage area for the washwater / stormwater recycling operations (Figure 3). All the three pits in the recycling system were sloped at the entrance in order for a front-end loader to go into the pit for a periodic cleanup. However, a berm or a slope away from the pit is placed infront of the second and the third pit in order to divert the wash wastewater entry into these pits. The cross -sectional and construction details of the pits are shown on Figure 5 and the truck travel path is shown on Figure 6. CPEES designed a pit sludge storage area next to the truck washing operations in order to control stormwater flow that is in contact with the pit sludge. The slopes of the truck washing operations and the pit sludge storage area are directed toward the first pit of the three pit recycling system in order to control and mitigate migration of stormwater contamination from the washing operations. The location of the three pit recycling system along with stonnwater now directions and wash areas are displayed on Figure 2. The construction details for the three pit system are displayed on Figure 3 and 4. In addition to the three pit system, the proposed carbon dioxide system in the three pit recycle system will enhance additional removal of Total Suspended Solids (TSS) and Settleable Solids (SS), and also adjust pH to suit process water for recycling at the plant. The location of the carbon dioxide system is displayed on Figure 3. The 25 year, 24-hr stormwater runoff calculations are provided in Table 1 of this report. CP Engineering and Environmental Solutions 4 A to C Permit Application Tel: (704) 541-4042 Southern Concrete Materials —Pond Road 80 fond Road 0 A sump pump with a level switch will be provided to pump water from the third pit as required either to the plant or to the truck washing operations. This would help empty the third pit to accommodate any possible rain event. 7.0 A to C CONSTRUCTION PERMIT APPLICATION Based on our consultants' discussions with the State DWQ, it is our understanding that we need to file a NCG 140000 Notice of Intent (NOT) Norm to obtain A to C Permit to construct the proposed process washwater / stormwater recycle system at the Asheville Pond Road Plant. A copy of the NCG 140000 NOI is attached with the A to C Report for an approval. CP Engineering and Environmental Solutions Tel: (704) 541-4042 A to C Permit Application Southern Concrete Materials —Pond Road 80 Pond Road 40 ADivision of Water Quality / Surface Water Protection NC®ENR National Pollutant Discharge Elimination System F,IY�!'jYMf.YT. N�. r�� NCG140000 NOTICE OF INTENT FOR AGENCY USF ONLY Date Received Year M.th I Day. Certificate of COV=Rc 4 Check H Am= PemiitAAgrrdto National Pollutant Discharge Elimination System application for coverage under General Permit NCG140000: STORMWATER AND PROCESS WASTEWATER DISCHARGES associated with activities classified as: SIC (Standard Industrial Classification) Code- 3273 Ready Mixed Concrete For new plant sites that will discharge or recycle process wastewater (even if commingled with stormwater): This NOI is also an APPLICATION FOR Authorization to Construct (ATC) wastewater treatment facilities. ATC requests must be submitted at least 90 days prior to construction'. For existing plant sites discharging or recycling process wastewater (even if commingled with stormwater): This NOI is also an APPLICATION FOR Authorization to continue to operate wastewater treatment facilities in place. Construction, modification, or installation of any new treatment components at an existing site requires an ATC. Treatment facilities used to treat or recycle process wastewater (including stormwater BMP structures treating process wastewater flows commingled with stormwater) require an ATC prior to construction per 15A NCAC 21-1.0138. The authorization to construct or continue to operate will be issued at the same time as the Certificate of Coverage (COC) for the NCG 14 permit. Design of treatment facilities must comply with requirements of 15A NCAC 21-1.0138 & .0139. Construction of wastewater treatment facilities (this includes recycle systems) at new or existing plant sites requires submission of three (3) sets of plans and specifications signed and sealed by a Professional Engineer (P.E.) or qualified staff2 along with this application. A copy of the design calculations should be included. Please see questions 14 & 15. For questions, please contact the DWO Regional Office for your area. (See page 5) (Please print or type) 1) Mailing address of owner/operator (address to which all permit correspondence will be mailed): Name Street Address City Telephone No. MR. JEFF LAMM, EH & S MANAGER P.O. BOX 5395 ASHEVILLE 828-253-6421 2) Location of facility producing discharge: Facility Name Facility Contact Street Address City County Telephone No. State NC ZIP Code 28813 Fax; 828-254-3024 SOUTHERN CONCRETE MATERIALS - POND ROAD PLANT MR. JEFF LAMM, EH&S MANAGER 80 POND ROAD ASHEVILLE State NC ZIP Code 28806 BUNCOMBE 828-253-6421 Fax: 828-254-3024 Page 1 of 5 'Asper 15A NCAC 2H .010fi 21-Inless treatment facilities are designed, constructed, and put into operation by employees internal to the company who are qualified to perform such work for their respective companies in accordance with General Statutes, 89C-25 (7), plans and specifications must be signed and sealed by a P.E. SWU-229-071408 Last revised 7114108 NCG140000 N.O.I. 3) Physical location information: Please provide a narrative description of how to get to the facility (use street names, state road numbers, and distance and direction from a roadway intersection), SEE DRAWING FOR DETAILS (A copy of a county map or USGS quad sheet with facility dearly located on the map is a required part of this application.) 4) Latitude 35 32' 44.5" Longitude 80 36' 10.6" 1 (deg, min, sec) 5) This NPDES Permit Application applies to which of the following: ❑ New or Proposed Facility Date operation is to begin m Existing 6) Standard Industrial Classification: Provide the 4 digit Standard Industrial Classification Code (SIC Code) that describes the primary industrial activity at this facility SIC Code: 3 2 7 3 7) Provide a brief description of the types of industrial activities and products produced at this facility: (Include a site diagram showing the process areas present at this facility.) QBY. CQLNRETE OPERATIONS. PLANT PRODUCES CONCRETE FOR COMMERCIAL. USE 8) Discharge points / Receiving waters: How many discharge points (ditches, pipes, channels, etc.) convey stormwater and/or wastewater from the property? ONE OUTFALL-001 What is the name of the body or bodies of water (creek, stream, river, lake, etc.) that the facility stormwater ® and/or wastewater discharges end up in? HOMINY CREEK (SEE FIGURE 1) If the site stormwater discharges to a separate storm sewer system, name the operator of the separate storm sewer system (e.g. City of Raleigh municipal storm sewer). NIA Receiving water classification (if known): CLASS C (SEE ATTACHED SHEETS) Note: Discharge of process wastewater to receiving waters classified as WS41 to WS-V or SA must be approved by the N.C. Dept. of Environmental Health. If DEH does not approve, coverage under NCG140000 cannot be granted. No new discharges of process wastewater are permitted in receiving waters classified as WS-I or freshwater ORW. 9) Does this facility have any other NPDES permits? D No ❑ Yes If yes, list the permit numbers for all current NPDES permits for this facility: 10) Does this facility have any Non -Discharge permits (ex: recycle permits)? 0 No ❑ Yes If yes, list the permit numbers for all current Non -Discharge permits for this facility: 11) Does this facility employ any best management practices for stormwater control? ❑ No 0 Yes If yes, please briefly describe: SECONDARY CONTAINMENT FOR OILS/CHEMICAL STORAGE�RERMS AROUND THE STONE AND SAND STORAGE AREAS, PLANS TO RECYCLE WASHWATER Page 2of5 SWU-229-071408 Last revised 7/14/2008 NCG140000 N.O.I. 12) Does this facility have a Stormwater Pollution Prevention Plan? ❑ No ® Yes If yes, when was it implemented? SEPTEMBER 22, 2006 13) Are vehicle maintenance activities occurring or planned at this facility? ® No ❑ Yes Wastewater Treatment Desi n Information 14) Are discharges occurring or planned from any of the following process wastewater generating activities? Vehicle and equipment cleaning 21 Yes ❑ No Wetting of raw material stockpiles ❑ Yes 0 No Mixing drum cleaning 0 Yes ❑ No If yes to any of the above, please describe the type of process used to treat and/or recycle the process wastewater. For a sufficient application, you must provide design specifics (e.g., design volume, retention time, surface area, etc.) and calculations to demonstrate compliance with permit effluent limits (pH -- 6-9 SU, Total Suspended Solids (TSS) - 30 mgli, and Settleable Solids (SS) - 5 mVI-) [Use separate sheet(s)]. If all these discharges are recycled, please refer to Question 15. Foriplants that riec cle and/or discharge 2rocess wastewater: When applying for this permit, you are also applying for an authorization to construct (new treatment facilities) or authorization to continue to operate (existing treatment facilities) as part of the NOI. For new sites. you must submit three (3) sets of design plans and specifications with this application and provide supporting calculations that predict compliance of final discharge with permit limits. For existing sitm applicants should submit three (3) sets of plans and specs for facilities as -built and provide as many design details as possible, or submit a detailed diagram of treatment systems in place that includes information such as tank volumes, dimensions, retention time, piping, settling basin details, etc. Please note: If new treatment systems are planned for an existing site, an ATC will be required prior to construction of those facilities. Plans/specs/calculations prepared by a P.E. and the request for an ATC may be submitted with this NOI, or separately at a later date. DWO may request the status of your plans for requesting an ATC upon Issuance of the COC. 15) Does the facility use or plan to use a recycle system? ❑ No 0 Yes If yes, what size storm event is the system designed to hold before overflowing? (for example, 10-yr, 24-hr) 25 year, 24-hr rainfall event For a recycle system (regardless of when it overflows), please provide plans, calculations, and design specifics (e.g., throughput assumptions/water balance, design volume, retention time, surface area, amount of freeboard in design storm event, etc.). [Use separate sheet(s)]. For a sufficient application, the information must demonstrate compliance of final discharge with permit effluent limits (pH - 6-9 SU, Total Suspended Solids (TSS) - 30 mg/l, and Settleable Solids (SS) - 5 m1/1), or must demonstrate that the recycle system has sufficient capacity to contain runoff from a 25-year, 24-hr rainfall event plus one foot of freeboard under design operating conditions. Page 3 of 5 SWU-229-071408 Last revised 7/14/2008 NCG140000 NA.I. 16) Are wastewater treatment facilities (including recycle systems) planned in the 100-year flood plain? ® No ❑ Yes If so, include information to demonstrate protection from flooding. (Minimum design requirements for treatment works include protection from the 100-year flood, per 15A NCAC 2H .0219.) 17) Hazardous Waste: a) Is this facility a Hazardous Waste Treatment, Storage, or Disposal Facility? 0 No ❑ Yes b) Is this facility a Small Quantity Generator (less than 1000 kg. of hazardous waste generated per month) of hazardous waste? ® No ❑ Yes c) Is this facility a Large Quantity Generator (1000 kg. or more of hazardous waste generated per month) of hazardous waste? V1 No ❑ Yes d) If you answered yes to questions b. or c., please provide the following information: Type(s) of waste: How is material stored: Where is material stored: How many disposal shipments per year: Name of transport 1 disposal vendor: Vendor address: 18) Certification: North Carolina General Statute 143-215.6 B(i) provides that: Any person who knowingly makes any false statement, representation, or certification in any application, record, report, plan, or other document filed or required to be maintained under this Article or a rule implementing this Article; or who knowingly makes a false statement of a material fact in a rulemaking proceeding or contested case under this Article; or who falsifies, tampers with, or knowingly renders inaccurate any recording or monitoring device or method required to be operated or maintained under this Article or rules of the [Environmental Management] Commission implementing this Article shall be guilty of a Glass 2 misdemeanor which may include a fine not to exceed ten thousand dollars ($10,000). I hereby request coverage under the referenced General Permit. I understand that coverage under this permit will constitute the permit requirements for the discharge(s) and is enforceable in the same manner as an individual permit. i certify that I am familiar with the information contained in this application and that to the best of my knowledge and belief such information is true, complete, and accurate. Printed Name of Person Signing: MR. JEFF LAMM Title: EH & S MANAGER (signatule o pplicant) (Date Signed) Notice of Intent must be accompanied by a check or money order for $100.00 made payable to: NCDENR Page 4 of 5 SWU-229-071408 Last revised 7/14/2008 NCG140000 N.O.l. Final Checklist This application will he returned as incomplete unless all of the following items have been included: F11 Check for $100 made payable to NCDENR. 21 This completed application and all supporting documentation (including design details and calculations for treatment systems). w ❑ If an Erosion & Sedimentation Control (E&SC) Plan is required from Division of Land Resources (DLR) or local designee: documentation verifying applicant has developed and submitted that Plan to the governing agency (required per 15A NCAC 02H .0138). NOT REQUIRED ❑ For new sites (or sites that will install new treatment facilities): Three (3) copies of plans and specifications for wastewater treatment facilities (including recycle systems), signed and sealed by a Professional Engineer or qualified staff meeting requirements of G.S. 89C-25 (7). NIA For existing sites: three (3) copies of plans and specifications for wastewater treatment facilities (including recycle systems) as built, stamped and sealed by a Professional Engineer, or (only if plans not available) a detailed diagrams of treatment systems in place that includes information such as tank volumes, dimensions, retention time, piping, settling basin details, etc. SEE ATTACHED A site map showing, at a minimum, (existing or proposed): (a) outline of drainage areas, (b) stormwaterlwastewater treatment structures, (c) location of stormwaterlwastewater outfalls (corresponding to which drainage areas), (d) runoff conveyance structures, (e) areas where materials are stored, (f) impervious areas, and (g) site property lines- m A county map or USGS quad sheet with location of facility clearly marked. Mail the entire package to: Stormwater Permitting Unit Division of Water Quality 1617 Mail Service Center Raleigh, North Carolina 27699-1617 Note The submission of this document does not guarantee the issuance of an NPDES permit. For questions, please contact the DWQ Regional Office for your area. DWQ Regional Office Contact Information: Asheville Office ...... (828) 296-4500 Fayetteville Office ... (910) 433-3300 Mooresville Office ... (704) 663-1699 Raleigh Office ........ (919) 791-4200 Washington Office ...(252) 946-6481 Wilmington Office ... (910) 796-7215 Winston-Salem ...... (336) 771-5000 Central Office ......... (919) 807-6300 Page 5 of 5 SWU-229-071408 Last revised 7/14/2008 Raleigh, N Carolina to 80 Pond Rd, Asheville, NC 28806 - Google Maps Page 1 of 1 Directions to 80 Pond Rd, Asheville, NC G009"I 28806 Maps ItJ 249 mi - about 3 hours 59 mins Save trees. Goo green! Download Google Maps on your phone at googlexomlgmm n Raleigh, N Carolina 1. Head west on W Morgan St toward S Harrington St go 482 ft total 482 ft r► 2. Turn right at S Harrington St 90 302 ft total 0.1 mi 3. Tura left at Hillsborough St/NC-54 go 2.9 mi About G mins total 3.0 mi 4. Take the ramp -onto 1440 E go 0.4 mi total 3.4 mi 5. Take exit 4 for Wade Ave go 0.3 mi total 3.7 mi 6. Turn left at Raleigh Chapel Hill ExpyMlade Ave go 2.4 mi About 3 mins total 6.1 mi 7. Take the exit toward 1-40 W go 0.5 mi total 6.6 mi 8. Keep left at the fork, follow signs for Durhaml140 W and merge onto I- go 61.8 mi 40 W total 68.4 mi About 58 mins 9. Slight right at 40 W (signs for US-70/Greensboroll-40 W11-85 S) go 14.3 mi About 14 mins total 82.6 mi 10. Take the exit toward 1-40 W go 0.4 mi total83.1 mi 11. Keep left at the fork to continue toward 1-40 W and merge onto 1-40 W go 165 mi About 2 hours 32 mins total 248 mi 12. Take exit 47 for NC-191 toward W Asheville go 0.2 mi total 248 mi 13. Turn left at Brevard Rd/NC-191 go 0.6 mi About 2 mins total 249 mi 14. Turn right at NC-3431/Pond Rd go 0.3 mi Destination will be on the left total 249 mi 80 Pond Rd Asheville, NC 28806 These directions are for planning purposes only. You may find that construction projects, traffic, weather, or other events may cause conditions to differ from the map results, and you should plan your route accordingly_ You must obey all signs or notices regarding your route. Map data ©2008 Tele Atlas http://maps.google.com/maps?f=q&hl=en&geocode=&q=Raleigh,+North+Carolina+to+80... 11 /2/2008 TABLE SOUTHERN CONCRETE MATERIALS 80 POND ROAD ASHEVILLE, NORTH CAROLINA Size of a Concrete Recycling System for Process Washwaterl Stormwater for a Reday Mix Concrete Plant Size for a 25 yr, 24-hr Runoff Volume = Drainage Area = ©evatfon Difference -- Length = Tc = Me s h= I Intenslty (Asheville) _ Depth = Runoff Volume = Design Recycle pits to hold = 02s - 25 Yr, 24-hr Discharge = for Weir for Qa = Length of the weir = Capcaity of pits Pit 1,2 & 3 Each (Flat Area Volume) Use SCS Peak Discharge 0.65 acres or 28,314 sq ft. 4 It (Obtained from the site topo map) 220 ft (Obtained from the site topo map) 22 min (8.03s) 2% 98 (Table 8.03b) 6 inches (Ref Fig 8.03k) 7 inthr (8.03f) - 69, inches (Table 8.03c) Drainage Area x Runoff Depth 13,921 Cu ft. 13,921 cu fL A minimum of 2 pits with a buffer of 1 additional pit for emergencies CIA Qn = 4,095 Peak rate of runoff in cubic feet per second C - 0.3 Runoff Coefficient i = 7 Average intensity of Rainfall in inchesfir for a storm duradon-lime of concentration A = 0.85 Draingge area 3.0LH Q,s= 4.095 L = Lenghth of the weir (ft) H = 076 Height of the weir (ft) Assume 0.5 ft 4.095 =3.0 x L x (0.75) 2 ft Pit 1,2 & 3 Each (Slope Area Volume) Total Pit Volume (CFT) = Chalam Pakala, PE CP Engineering Tel: 704-541-4U42 CPEES Project No. t 114-003 L = 35 ft W = 20 ft Volumelpit = D= 6 ft or L= 21 ft W = 20 ft Valumelpit = D= 6 ft or 4,200 cubic feet. (cft) 12600 cubic feet. (Three pits) 1,260 cubic feet. 3781) cubic feet. (Three pits) 16,380 cubic feet > 13,921 cubic feet FIGURE$ Figure l: Site Location Map Figure 2: Aerial View of Surrounding Properties around the Pond Road Plant Figure 3: Site Layout Map with Buildings, Dry Mix Concrete Plant, and Proposed Process Washwater Stormwater Recycle System Figure 4: Design Details of Proposed Process Washwater / Stormwater Recycle System Figure 5: Process Washwater and Stormwater Recycle System Construction Details Figure 6: Truck Travel Path I ! P82° 37 0.00., W, I ! I oaz° 3s' 0.00° w I I I oat° 35' 0.00° w !Il��i� — PW �-tea ,; ail �� �j•� ��y `rj�s"i j/ C! _,,� - �.r �r� s i NEI v Lill NA 082° 37-10.00" W 682° 360.00" W 082° 35'I0.00" W .ame: ASHEVILLE Location: 035° 32' 44.7" N 082' 36102' W Date: 11/3/2008 Caption: SITE LOCATION MAP Scale: 1 inch equals 2000 feet SOUTHERN CONCRETE MATERIALS - POND ROAD FIGURE-1 JOB NO. 1114-003 1997, MaptmM, Inc. �:,�� (axe •t sk !�'�'- ���� .�• {'. -- /' �s'2"iG \ 5. - rri. C • f � Y c� .. �i� �� +fit �' a}�✓``. - �� p'�� , ram^ ✓ � • r +t' �i� �„tYt• `,ry � �.`-ram. f•.f rl. ';� 'ity_ ��r+ +-.e _3c-t� d ��y.��� �:. -� ,! � - PEA;., [ � � i • � 11. c ;r®�! k C"� 1 f � �,'�c t �r' y r -N�-sst .^.7�'�3+ � � }U � � i r�"� � - r : �"`•. � s � 1 r��,. �cS �� � *� :rs' ��y�ft'�'c.�L`��1.� 1.C'ry .. ly t �`""}.p i`1R a,L..,�y o T_ ra1%•^ -�19.�i �.i .�"` ytir . '?R)n.� t� • V � "�tr� c � ��iClt ` =�h � � ;S' ��,.r^.Cr ��� j =.�, 'z .- �, ,tad I"I+/Pfp�vrn�C,�,�a. i�' _ � .'l'•^: • :. V [�s� ��� 7`� '� F 21, 1 V2- DIA. PIPE HANDRAIL PESTS ANCHORED INT❑ CONCRETE 2V :D I N❑TESL BASE MAP WAS SUPPLIED BY S.C,M,I. INSIDE DIMENSI❑NS LENGTH SECTION 35' INSIDE DIMENSIONS 20, WIDTH SECTION CONCRETE PIT SCALE= 1/4" =1=4" #4 @ 120 ❑,C, EACH WAY _ 35 A #4 @ 12' D.C. EACH WAY SECTION A -A C�'Al P-= I\ITC „ I L- �, L-r7u W" I SJGV I IVIy o-D SCALE=- 1/4' =NTS RCVISI❑NS: I:—"U , w" I g7GV I IVI■ V-V SCALE= 1/4" =NTS 8" DIA CONC FILLED STEEL TUBE 4000 PS CONCRETE BOLLARD DETAIL SCALE= NTS 01 :;ROUND SURFACE #4 BARS @ 12" ❑/C H❑RIZDNTAL �I 4� #5 BARS @ 18" ❑/C VERTICAL — 12" REINF❑RCED CONCRETE WAIL C3500 PS 6' CONCRETE SLAB 4" N❑. 57 WASHED STONE ill FXTERI❑R WATERPR❑❑EPERIMETER J❑INT WALL 6' CONCRETE SLAB SEALANT GR❑UND C' 4" NL, 57 WASHED ST❑NE in k4t 6 �6„ 6„ 2 5' #4 BARS (3) 4,5' #4 AR (4) INTERIOR SLAB EXTERIOR FOOTING & WALL SECTION SECTION 1-1 SCALE- NTS CONSTRUCTION NOTES: 1. BOTTOM SLAB TO BR REINFORCED WITH 6" W 10 X 10 WWF. 2. COLD JOINTS IN WALL TO HAVE KEYWAY WITH 18" #4 LAP BAR. J. SLAB AND INTERIOR WALLS TO BE SEALED WITH CONCRETE WATERPROOFING. ADDITIONAL NOTES: 1. COMPACTION OF SOIL TO 95% STD PROCTOR MAX DRY DENSITY. 2. CONCRETE 4,000 P. S, I. COMPRESSIVE STRENGTH (928 DAYS 3 REBAR GRADE 60 4. CONSTRUCTION QUALITY CONTROL TESTING TO INCLUDE SUBGRADF DENSITY TESTING, PROOF ROLLING OF SUBGRADF, SLAB REINFORCEMENT INSPECTION, CONCRETE THICKNESS MEASUREMENT, AND CONCRETE STRENGTH TESTING. ALL TEST RESULTS AND JUDGEMENT IS THE RESPONCIBILI TY OF THE OWNER. 5, HAND RAIL DESIGN AND INSTALLATION IS THE RESPONSIBILITY OF THE OWNER, 6. SUMP PUMP, PIPING AND ELECTRICAL WORK FOR SUMP PUMP 1S THE RESPONSIBILITY OF THE OWNER. 7, ALL WALLS ARE REINFORCED AND CONCRETE POURED 8. POND LEAK TESTING IS THE RESPONSIBILITY OF THE OWNER. 9. ALL BOUNDARIES OF CONSTRUCTION ACTIVITY/DISTURBFD AREAS SHALL BE PROTECTED WITH SILT FENCE AS SHOWN ON SILT FENCE CONSTRUCTION DETAILS. 12 GAUGE 4' X4' OR 2' X4' \'LLDFD WIRE H❑GKED NOTES: 1) TOTAL DRAINAGE AREA FL❑WING TO SILT ONTO PREFORMED CHANNELS ON METAL POSTS, OR FASTENED FENCE MAY NOT EXCEED 1 ACRE. TO CEDAR OR WOOD POSTS W/ NO 8 STAPLES. 2) SILT FENCES SHOULD NOT BE USED AT PIPE CUTLETS OR IN AREAS OF CONCENTRATED FLOW (CREEKS, DITCHLINES, SWALES ETC.) / ULTAVI❑LET RESISTANT (BLACK) MIRIFI FABRIC OR EQUIVALENT SECURED TO WIRE W/METAL MPS CLIPS OR WIRE AT 8' OFF CENTER a pG MAX. SEDIMENT STORAGE LEVEL, REMOVE SEDIMENT WHEN THIS LEVEL IS REACHED $ OR AS DIRECTED BY C❑NVERSI❑N INSPECTOR. / SILK f -� 11• l W ❑F F1 t� �' � V 4 1 l S-� SE-VK 11 TO INCREASE STORAGE CAPACITY AND PROLONG THE LIFE ❑F ILI THE SILT FENCE, IT IS GENERALLY _ ADVISABLE TO DIG A SE➢IMENT PIT - IN FRONT OF YOUR SILT FENCE CARRY APPROX. 1' OF -ABRIC INT❑ TRENCH, WHENEVER P❑SSIBLE, COVER W/S❑IL & TAMP BACKFILL. _ CARRY 0.5' OF WIRE IvT❑ TRENCH. SILT FENCE — _ SHEET DRAINAGE (DNLY) — NATURAL GRADE METAL, CEDAR OR 4' X4' TREATED WOOD POSTS AT 1C' D.C. MAX. CEDAR & VOOP POSTS SHOULD BE 3' DEEP MIN. ' F T SILT FENCE DETAIL SCALE= N,T,S HOSE --------- 3s \ rT WEIR Nlpw �Cp SI SAW CU bI SINS \ 3 SIOp T JaINT � ��$ oN \ e 4" \ 00 Approved Storrnwater F ermit Docurnenth a reud�ccordance ith'these documents is tormwater P irmit. North Carolina rules require that the stormw ter system designer ertify� Mor+ee-w t three the plans and specs; a s�ermwa � Permit # C Date 2 i by NC Division of Water Cholfty Dheat # _ �vieisrt Caete ISOMETRIC VIEW SECTION D-D SEAL •- SCALE= N,T,S, SCALE- NTS, = 19807 SCALE: DRAWING TITLE: PROCESS WASHWATER AND ST❑RMWATLR RECYCLE SYSTEM C❑NSTRUCTI❑N DETAILS INITIALS DATE PROJECT: SOUTHERN C❑NCRET= MATERIALS INC, (POND ROAD PLANT) PROJECT NO,: PREPARED BY: CVP 11/7/08 DRAWN BY; CAD 1117108 CHECKED BY CVP 11/7/09 APPR❑VLD BY CVP 11/7/013 FILE NAME Xxx P.❑ BOX 5395 1114-004 ASHEVILLE N,C, 28813 REV. NO,: REv. DATE: CHALAM PAKALA ENGINEERING AND ENVIRCiNMENTAL SOLUTIONS ➢RAWING NO,: A Cost-Efi ective Solution Provider Far Manufacturing Industries T A 1OC17 ALLYS❑N PARK DR, TEL (704) 541-40AD BRAWllv CHARLDITE, NLIRTH CAR❑LINA 28277 FAX (704) 541-4043 0 R/W MONUMENT 2D50 U.P. U.P. S\ U.P. ZONE "X"(APPROX. LOCATION 2040 „AE (APPRQX, LOCATION) 2030 ZONE 1 2020) N❑TFS: BASE MAP n w NO. 5 REBAR N,C.G.S. MONUMENT" HOMINY" NnaTH - 577.575_11 WAS SUPPLIED BY S.C.M1 S �1 �1 wl cp� �l �1 Z 1 2035.4' 1 ZONE "X"(APPROX. LCCATION ZONE "AE"(APPROX, LOCATION) U.P. C LOT ? P. S 89 28'-50" E > C 15„ CM1 3 4a' L2� �NV�RT ELEVATION C 0~ �� 201,.4., WqL � E� J J CST 2� T �8 r— �� —�- 62 ° 1 \ 0.364 Ac. R.R. SPfKE\ > 2040 U.P. C ` Y � f 2050 POND Roy SEWER EASEMENT SEE o� V L15 1" EIP 11 I 3/4" HEX ROD 1 � 1 I I I II I Z� / C I/ , O / I Ov 20' SE VER Eq SEMEN T l SSE L� D.B. 1303 PG. 29 HENRY S. ANDERSON D.B. 3200 PC, 710 1� REVISIONS: A z 0 N I � � N (.0 cyl i� N CC 1-26 PAINT AND BODY, INC D.B. 1663 PG. 474 NO. 5 REBAR A LLJ o _ V� N I � C) o7 Ln Ln i!7 L S - N 0 LE � QQ) P �00 �Q o SCALL INITIALS I DATE PREPARED BYE CVP 11/07/08 DRAWN BY: CAD 11/07/08 CHECKED BY: CVP 11/07/08 APPROVED BY CVP 11/07/08 FILE NAME: XXX LEASING AND=QUIPMENT SALES CC INC D.B, 2556 PG 192 CONTOUR INTERVAL = 2'. TOPOGRAPKC DATA ARE BASED ON NCGS GRID STATION "HOMINY", ELEVATION = 2070.53' Approvr d Stmt Document,-, Construction innvrdaeePwerhti North Comfits is required by the stormwater pe rules require that the stormwater system desig fth the certify conformity Fte plans and specs; 4 030°� Date 2� Permit # NC pWislvn of Water umtity by� Revision Deters Sheet # DRAWING T[TLE+ OVERALL LOCATI❑N PLAN PROJECT: SOUTHERN C7NCRETE MATERIALS INC (POND ROAD PLANT) P.0 BOX 5395 ASHEVILLE N,C, 28013 CHALAM PAKALA ENGINEERING AND ENVIRONMENTAL SOLUTIONS A Cost -Effective Solution Provider for Manufacturing Industries 10017 ALLYS❑N PARK DR. TEL (704) 541-4042 CHARLOTTE, NORTH CAR❑LINA 28277 FAX (704) 541--4C43 PROJECT N01 1114C04 REV. NG.; REV. DATE DRAWING N❑ : DRAWING 3 BASE MAP WAS SUPPLIED BY S C.M,I. PREPARED BY CVP 11/07/OB DRAWN BY: CAD 11/07/O8 CHECKED BY: CVP 11/07/08 APPR❑VED BYJ CVP 11/D7/08 GRAVEL PARKING U.P. c L U.P 21B,35, E < < s 209 V 81o-�5 ss i f �`� � �w 4sEMENT SSE D. B. 1'30,3 P G. 29 E i I � f I NOTES: I BASE MAP WAS SUPPLIED BY S.C.M.I. F E i i 1 4 1 ti TRUCK PULLS UP y ��AND BACKS IN I r �1 �f- EXIST EXISTING CONCRETE GRAVEL STORAGE AREA PREPARED BY: CVP 11/07/08 DRAWN BY: CAD 11/07/08 CHECKED BY: CVP 11/07/08 APPROVED BY CVP 11/07/08 4K ATTACHMENTS Attachment A: Runoff Volume and Weir Design Calculations with Backup Attachment B: Laboratory Analytical Results Supplied by Environmental Testing Solutions Attachment C: Manufacturer Supplied Literature for Carbon Dioxide System Attachment D: NC DENR — Division of Water Quality Stream Classification Table for Buncome County TABLE SOUTHERN CONCRETE MATERIALS 80 POND ROAD ASHEVILLE, NORTH CAROLINA Size of a Concrete Recycling System for Process Washwaterl Stormwater for a Reday Mix Concrete Plant ce for a 25 yr, 24-hr Runoff Volume = Use SCS Peak Discharge unage Area = 43.65 aoree or 28,314 sq ft, vatfon Difterence= 4 11 (Obtained from Vte site topo map) rgth 220 ft (Obtained from the site topo map) = 2.2 min (8.03a) 'pe = 2% 98 (Table 8.03b) nfall - 6 WKIWs (Ref Fig 8.03k) n1all Intensity (Asheville) = 7 infir (8_I73f) toff Depth = 5.9, irK ft t (Table 8.03C) Runoff volume = Drainage Area x Runoff Depth 13,921 ru ft. sign Recycle pits to hold = 13,921 cu ft.. A nirdnwm of 2 pits with a buffer of 1 addigorW pit for enxrgerwies CLA On = 4,096 Peak rate of runoff in cubic feet per second a:s - 25 Yr, 24-hr Discharge C = 0.9 Runoff Coefficient is = 7 Averepe intertaity of Rainfag in inchesihr for a storm d rationdime of co noa Watson A = 0.65 Dtaingae area for Weir for 0, = ;th of the weir = 'city of pits Pit 1,2 & 3 Each (Flat Area Volume) 3.01. H'rz Oa = 4.095 L = Lenghth of the weir (fl) H = 0.15 Height of ft weir (ft) Assume 0.5 ft 4.095 =3.0 x L x (0.75) 32 2 ft Pit 1,2 & 3 Each (Slope Area Volume) Total Pit Volume (CFT) = Chalam Pakala. PE CP Engineering Tel: 704-541 -1042 CPEES Proiect No. 1114-003 L = 35 ft W c 20 ft Volumelpit = D= 6 ft or L= 21 ft W = 20 ft VDlumelpit= D= 6 ft or 4,200 cubic feet. (cft) 12600 cubic feet. (Three pits) 1,260 cubic feet. 3780 cubic feet. (Three pits) 16,3W oubiefeet > 13,921 cubicfeet 13 v Q a� 0 ca c 0 OL m 0 E m rN O E 0 w rn a) z H (tt) CAA !Vote: Use nomograph Tc for natural basins with well-defined channels, for overland flow on bare earth, and for mowed -grass roadside channels. For overland flow, grassed surfaces, multiply Tc by 2. For overland flow, concrete or asphalt surfaces, multiply Tc by 0.4. For concrete channels, multiply Tc by 0.2_ Figure 8.03a Time of concentrailon of small drainage basins, 8.03.4 T `min) 200 100 50 10 5 Appendices 20 1s 10 8 � 6 0 L t`n 4 a7 t U C 2 T r U) C m I 0.8 S° a6 C Cr 0.4 FOX a_I L 5 Air"o S 10 20 40 60 2 3 4 6 8 12 18 24 Minutes Hours Duration Figure 8.03f Rainfall intensity duration curves —Asheville, 20 15 10 6 0 r 4 a> t U C 2 T C � 0.8 0.6 c Ir 0.4 0.2 0.1 5 10 20 40 60 2 3 4 6 8 12 18 24 Minutes Hours Duration Figure 8.03g Rainfall intensity duration curves —Charlotte. 8.03.7 0 Table 8.03b- Runoff Curve Numbers (CN) Hydrologic Soil Group Land use/Cover Cultivated land without conservation 72 81 88 91 with conservation 62 71 78 81 Pasture land poorcondition 68 79 86 89 fair condition 49 69 79 84 good condition 39 61 74 80 Meadow good condition 30 58 71 78 Wood or forest land Thin stand - poor cover, no mulch 45 66 77 83 Good stand - good cover 25 55 70 77 Open spaces, lawns, parks, golf courses, cemeteries, etc. good condition: grass cover on 75% or more of the area 39 61 74 80 lair condition: grass cover on 50 to 75% of the area 49 69 79 84 Commercial and business areas (8511/6 Impervious) 89 92 94 95 Industrial districts (720% impervious) 81 88 91 93 Residential:' Development completed and vegetation established Average lot size Average % impervious 1/8 acre or less 65 77 85 90 92 1/4 acre 38 61 75 83 87 1 /3 acre 30 57 72 81 86 1 /2 acre 25 54 70 80 85 1 acre 20 51 68 79 84 2 acre 15 47 66 77 81 Paved parking lots, roofs, driveways, etc. 98 98 98 98 Streets and roads paved with curbs and storm sewers 98 98 98 98 gravel 76 85 89 91 dirt 72 82 87 89 Newly graded area 81 89 93 95 Residential: Development underway and no vegetation Lot sizes of 1 /4 acre 88 93 95 97 Lot sizes of 112 acre 85 91 94 96 Lot sizes of 1 acre 82 90 93 95 Lot sizes of 2 acres 81 89 92 94 'Curve numbers are computed assuming the runoff from the house and driveway is directed toward the street. source: USDA-SCS 25•year t day precipitation (inches) Sal. In mro" O 23 30 75 ICo RAINFALL DATA MAP 5 5.5 Fry A r 7W, Lit � wi. wra i 6 �; 5.5 b .. T x►N i CkAT.AW j A U.-Ok ANSON /1 I 6.5 8 8 8.5 0 Appendices Table 8.03c Runoff Depth b. Determine runoff depth (in inches) from the curve number and rainfall @0 90IMP 1.01, Rainfall Curve Number (CN)l (inches) 60 65 70 75 80 85 90 95 q8 1.0 0.00 0.00 0.00 0.03 0.08 0.17 0.32 0.56 1.2 0.00 0.00 0.03 0.07 0.15 0.28 0.46 0.74 1.4 0.00 0.02 0.06 0.13 0.24 0.39 0.61 0.92 1.6 0.01 0.05 0.11 0.20 0.34 0.52 0.76 1.11 1.8 0.03 0.09 0.17 0.29 0.44 0.65 0.93 1.30 2.0 0.06 0.14 0.24 0.38 0.56 0.80 1.09 1.48 2.5 0.17 0.30 0.46 0.65 0.89 1.18 1.53 1.97 3.0 0.33 0.51 0.72 0.96 1.25 1.59 1.98 2.44 4.0 0.76 1.03 1.33 1.67 2.04 2.46 2.92 3.42 5.0 1.30 1.65 2.04 2.45 2.89 3.37 3.88 4.41 6.0 1.92 2.35 2.80 3.28 3.78 4.31 4.85 5.40 7.0 2.60 3.10 3.62 4.15 4.69 5.26 5.82 6.40 11* 8.0 3.33 3.90 4.47 5.04 5.62 6.22 6.81 7.39 9.0 4.10 4.72 5.34 5.95 6.57 7.19 7.79 8.39 10.0 4.90 5.57 6.23 6.88 7.52 8.16 8.78 9.39 11.0 5.72 6.44 7.13 7.82 8.48 9.14 9.77 10.39 12.0 6.56 7.32 8.05 8.76 9.45 10.12 10.76 11.39 To obtain runoff depths for CN's and other rainfall amounts not shown in this table, use an arithmetic interpolation. The volume of runoff from the site can be calculated by multiplying the area of the site by the runoff depth. Step 4. Determine the peak rate of runoff for the design storm by adjusting for watershed shape as follows: a. Determine an "equivalent drainage area" from the hydraulic length of the watershed using Figure 8.03n. Hydraulic length is the Iength of the flow path from the most remote point in the watershed to the point of discharge. b. Determine the discharge (cfs/inch of runoff) for the equivalent drainage area from Figure 8.03o through 8.03q: Figure 8.03o - for average watershed slopes 0-3% Figure 8.03p - for average watershed slopes 3-7% Figure 8.03q - for average watershed slopes 8-50% Calculate the peak discharge, 01, of the equivalent watershed by multi- plying equivalent watershed area by runoff from Table 8.03c in Step 3b. Attachment B Is Laboratory Analytical Results Supplied by Environmental Testing Solutions a_ _ Environmental Testing Solutions, Inc - PO Box 7565 Phone: (828) 350-9364 Ashe-ille. NC 28802 Fez: (828) 350-9368 Certificate of Analysis Project name: Southern Concrete Malerial, Project trumbcr: 070626.502 Colleetton date: 25-Ion-07 Date received: 26-Jun-07 Results: Sample identification' SCM - 10 A - Before `` Sample nunAwr: 40191 Parameters Method Result RL Units te Analyst Footnotes ADaed na Settleable Solids EPA 160.5 5.8 0.13 mg Uhr 2wt m KEK PH EPA 150.1 11.9 S.U. 2R.J—m KEK 1 Solids. Total Suspended EPA 160.2 320 2A ng/L 274,.-to KEK Results: Sample identification: SCM - iQ B -After Sangde ntrniber: 40192 Parameters Mtdiod Result RL Units Date Anabwt Foottotes Analyzed Settleable Solids EPA 160.5 0.11 0.11 mgAJhr 2s ttim-m KEK PH EPA 150.1 8.6 S.U. zs-n:a-m KEK 1 Solids, Tuta1 Suspended EPA 160.2 20 2.0 !yA 27-run-v KEK Results: Sample identification: SCM - Fast Sample number: 40193 Parameters Method Result RL Units Date Analyst Footnotes Ana Settleable Solids EPA 160.5 <0.1 0.l mgll./hr zsmo-m KEK PH EPA 150.1 7.2 S.U. 2dt,se-m KEK 1 Solids, Total Suspended EPA 160.2 16 2.0 MH Y7.7 w KEK Footnot= 1. Analyzed out of EPA rexpmmended !told tune. Nt, Cettiticatrun Nurnber: 600 NC Drinking Water Certifi=tion Number: 37786 FORTRANS pH CONTROL SYSTEMS FORTRANS pH CONTROL SYSTEMS are completely automatic. They continually monitor/test the pH of the influent water and compares it to the pH setting of the control unit. If a change in pH is detected, the controller activates the solenoid valve for the CO2. The pH adjustment chemical is then fed to the return side of the circulation pump until the pH is again at the proper level set at the controller. The unit will continuously circulate the water until a change in pH is detected and the treatment cycle begins once again. The unit also features a digital pH meter connected to a probe in the sample cell to ensure unit is functioning properly and that the correct pH level is maintained. The pH CONTROL SYSTEMS are designed to treat and maintain a specified pH level in a body of water usually 100,000 gallons or less to allow the permitted discharge of treated water to the environment. Permits must be obtained from the local governing agency to allow any discharge to the environment. Treated water may be used for wetting of rock and/or dust control to aid compliance with stormwater run off regulations. Treated water may also be used in water recycling systems. These systems offers precise monitoring and control of the pH in settling basins, lagoons and other outfall containment devices. -The pH CONTROL SYSTEMS will treat up to 57 gallons per minute - max 20' head pressure. Unique water circulation design eliminates the need for separate neutralization tank. •1.5" quick connect fittings on inlet and return for easy hook-up. The standard unit is equipped with 2-30'sections of 1.5" flexible hose with quick connect fittings. Inlet and outlet fittings at the basin or lagoon are per our specifications. -Unit is shipped completely assembled. The chemical controller is preprogrammed to maintain a pH of 7.5. Just attach hoses and PVC fittings. •1 year warranty on all component parts and housing. — Fortranst__ PERFECT SOLUTION FORTRANS, INC. - 7400 C. Siemens Rd. - Wendell N.C. 27591 1.866.365.8760 9 1.919.624.8832 info@fortrans.biz • www.fortrans.biz The Model 5000-S pH Control System is a self- contained pH monitor and control system housed in a weatherproof facility with lockable doors and adequate space to house the instrumentation and circulation pump. The system is configured for carbon dioxide gas operation. The Model 5000-SK Skid Mounted pH Control System contains all of the instrumentation and components of the regular Model 5000-S System and is shipped on a 44"x47" plastic skid with a durable solid plastic surface. The Control Panel is provided loose with all components installed and is designed to be attached to an interior wall of the control building. The tubing to the sample cell and from the CO2 solenoid valve to the Sparger stone feed assembly must be inserted after receipt of the unit. The system features a 115V 30Amp Breaker Box and two GFCI receptacles. The system is shipped with a CO2 feed system. F �NM1 i+�S��iCJ s yy gyp• ' •'F5 'f .'.� •a=.rah �t., t..,N Cro'i:..b � � .. ENGINEERS CERTIFICATION OF THE MODEL 5000-S PH MONITORING AND CONTROL SYSTEM G.C. Environmental, Inc. P.O. Box 40125 Raleigh, NC 27629 For. Fortrans Inc. P.O. Box 40 Wendell, NC 27591 Dated: September 11, 2003 G C Environmental, Inc. L r 5312 Pinewood Court Wendell, NC 27591� 4 - m (919) 266-2864 September 11, 2003 `Ae19 anQ1 PURPOSE G.C. Environmental, Inc., was contracted to provide an engineers review and certification that the Model 5000-S pH Monitor and Control System manufactured by Coastal Carolina Supply in Morehead City, NC, could effectively provide on a continuous basis, an average pH range of 6-9 units on the supernate layer of a stormwater/rinse water sedimentation basin typically found at Redi-mix concrete facilities. SCOPE OF WORK During the week of August 11, 2003, G.C. Environmental, Inc., witnessed the operation of the Model 5000--S self-contained pH Monitoring and Control System at a Redi-mix plant located in Durham, NC. During the two (2) day test program, measurements were made within the facilities stormwater/rinse water sedimentation basin for pH, temperature and depth (both supernate and sludge). During the first day of testing, the basin was found to be heavily loaded with solids and adjustments were made to the solids blanket to complete testing the following day. TEST METHODOLOGY A primary sedimentation basin located at a Redi-mix concrete plant located in Durham, NC was treated utilizing the Model 5000-S pH Monitor and Control System. During the test program, the basin was, on a semi -continuous basis, being fed rinse water from the exterior cleaning of cement trucks. Measurements for pH, temperature, supemate and sludge blankets were made within the sedimentation basin. Initial pH measurements showed pH levels of at least 12.0 units. The sedimentation basin was rectangular in shape with concrete walls and bottom. The basin ranged in depth of 1" at the inlet to approximately Y at the deepest point. Sludge measurements within the basin showed that at least 2/3 of the basins depth was comprised of sludge and the remainder supernate. The Model 5000-S pH Monitor and Control System was set up at the rectangular sedimentation basin with the intake and discharge hoses situated at opposite ends of the basin. Both the intake and discharge lines were set at depths within the supernate layer of the basin. A clockwise flow pattern was establisher) once the unit began operation and pH and temperature measurements were made at several locations throughout the supemate layer of the sedimentation basin. Approximately eighteen (18) pH and temperature measurements were collected with a mean pH value of 8.56 and mean temperature values of 30.94 °C. The pH system was left to run essentially on a continuous basis over a four (4) hour period. An estimated volume existing within the sedimentation basin was 25, 000 gallons with a little over 8000 gallons consisting of relatively clear supernate. The amount of 25% Sulfuric acid Q42SO4) used to treat the sedimentation basins supernate was approximately 18-20 gallons_ MODEL 5000-5 PH MONITOR AND CONTROL SYSTEM The model 5000-5 pH Monitor and Control System is comprised of a Hayward Power Flow II (3/4 hp, 56 GPM) centrifugal pump which delivers raw water to a completely contained pH sensor connected to a pH meter equipped with control relays which operate two (2) stenner (60 GPD) acid injection pumps. The acid 25% H.,SO4 is injected into the pump discharge line which empties into the sedimentation basin. Sulfuric acid is delivered to the system by 15 gallon carbuoys located outside of the fiberglass weatherproof enclosure which houses all of the aforementioned equipment. On top of the enclosed is an alarm light which is tied into the pH meter which is activated when pH levels exceed 8.5 pH units or are below 6.0 units. CONCLUSION 1. The Model 5000-5 pH Monitor and Control System is an effective system for the pH balancing of sedimentation basins which are used to collect stormwater runoff and rinse water, commonly found at Red -mix concrete plants. 2. During the test program an average pH of S.54 units was measured in the subject sedimentation basin with a range of 7.95 to 9.34 measured. 3. Sludge levels existing within the rectangular sedimentation ranged from 6.0 inches to 2.0 feet. PH values after pH stabilization at the sludge/supernate interface were approximately 12.0 units 4. For this test program, approximately 180 mg/l of sulfates were added to the sedimentation basin as a result of pH adjustment with 25% sulfuric acid. 5_ The 5000-S pH Monitor and Control System is fully automated and provides a pH adjusted waste water which could effectively be reused within the Redi-mix concrete industry. Attachment NC DENR — Division of Water Quality Stream Classification Table for Henderson County Name of Stream Description Curr. Class Date Basin Stream Index # Raoul Branch From source to Four C 07/01/73 French 6-72--2 i Mile Branch Broad The Lagoon Entire lake and C 07/01/73 French 6-73 connecting stream to Broad French Broad River Plateau Branch From source to French C 09/01/74 French 6-74 Broad River Broad Long valley From source to French C 07/01/73 French 6-75 Branch (White Broad River Broad Creek) (Westerly Lakel Long Valley Lake Entire lake and C 07/01/73 French 6-75-1 connecting stream to Broad Long Valley Branch Hominy Creek From source to French C 09/01/74 French 6-76 .� Broad River Broad Trent Branch From source to Hominy C 09/01/74 French 6-76-10 Creek Broad Ragsdale Creek From source to Hominy C 09/01/74 French 6-76-11 (Lake Ashnoca) Creek Broad Canie Creek From source to Hominy C 09/01/74 French 6-76-12 Creek Broad George Branch From source to Hominy C 09/01/74 French 6-76-3 Greek Broad Webb Branch From source to Hominy C 09/01/74 French 6-76-4 Creek Broad South Hominy From source to Hominy C;Tr 07/01/73 French 6-76-5 Creek Creek Broad Saw Branch From source tc South C;Tr 07/01/73 French 6-76-5-1 Hominy Creek Broad Sams Branch From source to South C;Tr 07/01/73 French 6-76-5-2 Hominy Creek Broad Stony Fork From source to South C;Tr 07/01/73 French 6-76-5-3 Hominy Creek Broad Wayah Branch From source to Stony C;Tr 07/01/73 French 6-76-5-3-1 Fork Broad Chestnut Creek From source to Stony C;Tr 07/01/73 French 6-76-5-3-2 Fork Broad McKinney Creek From source to Stony C;Tr 07/01/73 French 6-76-5-3-3 Fork Broad Warren Creek From source to South C;Tr 07/01/73 French 6-76-5-4 Hominy Creek Broad White Rock Branch From source to Warren C;Tr 07/01/73 French 6-76-5-4-1 Creek Broad Glady Fork From source to South C;Tr 07/01/73 French 6-16-5-5 Hominy Creek Broad HOgpen Branch From source to Glady C;Tr 07/01/73 French 6-76-5-5-1 Fork Broad Ballard Creek From source to Glady C 09/01/34 French 6-76-5-5-2 Fork Broad Turkey Branch From source to Ballard C 09/01/74 French 6--76-5-5-2-1 Creek Broad Page 4 of 14 O 0 n Ln 0 CV c>J ro D C 0 Cn rJ W , Q 0 0 C71 _ aj T z a� C 3 0 m Cu 0 0 0 C7 _ co a� 0 3 5{yVEY_ 70 r I� SHEVILLE a kt o- e ye 1F. �y as t KNO a. °��' F° z n c a - �r.i� s ! i FhV 6 ayf - . _� 4° `'� �o,w � , • rr. AL2j 1 ° BILTMORE \',� I:1 e 4o,Wle* ENIGL 4.Ah-£,�.a- I,a ` .�°a1,rA�E _ , �C ESTATEcm PISGAH aom.Y �4ra N :WE , 1V DLX"KER Alr .T� Hill LAKE LAKE 280 N A UT`� ` : -:'�Q* ° `y n LAX L-•{-- _' s+roal°n9 \; " ,:f�^ 1 +� VICINITY MAP SCALE: 1' = 2 MILES LEGEND: - - - - EXSITING 2' CONTOUR - - - - - - - EXSITING 10' CONTOUR - - - - OVERHEAD POWER LINES NOT SURVEYED -EDB- --' EXISTING DIVERSION BERM SEEDBED PREPARATION (SP) SP-1 FILL SLOPES 3:1 OR STEEPER TO BE SEEDE BY A HYDRAULIC SEEDER (PERMANENT SEEDING) 1) Leave the last 4-6 inches of fill loose and uncompacted, allowing rocks, roots, large clods and other debris to remain on the slope. 2) Roughen slope faces by making grooves 2-3 inches deep, perpendicular to the slope, 3) Spread lime evenly over slopes at rates recommended by soil tests. SP-2 FN slopes 3:1 or steeper (temporary seedings) 1) Leave a loose, uncompacted surface. Remove large clods, rocks, and debris which might hold netting above the surface. 2) Spread lime and fertilizer evenly at rates recommended by soil tests. 3) Break up large clods and rake into a loose, uniform seedbed. 4) Rake to loosen surface just prior to applying seed. SP-4 Gentle or flat slopes where topsoil is not used. 1) Remove rocks and debris. 2) Apply lime and fertilizer at rates recommended by soil tests; spread evenly and incorporate into the top 6' with a disk, chisel plow, or rotary tiller. 3) Break up large clods and rake into ❑ loose, uniform seedbed. 4) Rake to loosen surface just prior to applying seed. SEEDING METHODS (SM) seeding) SM 1 Fill slopes steeper than 3:1 (permanent eed n oP �P (P 9) Use hydraulic seeding equipment to apply seed and fertilizer, a wood fiber mulch at 45 Ib./1,000 s.f., and mulch tockifer. SM-2 Gentle to flat slopes or temporary seedings 1) Broadcast seed at the recommended rate with a cyclone seeder, drop spreader, or cultipacker seeder. 2) Rake seed into the soil and lightly pack to establish good contact. MULCH(MU) MU-1 Steep slopes (3:1 or greater) In mid -summer, late fall or winter, apply ',DO Ib./1,000 s.f, grain straw, cover with netting and stople to the slope. In spring or early fall use 45Ib. / 1,000 s.f. wood fiber in a hydroseeder slurry. MU-2 High -maintenance vegetation and temporary seedings Apply 90 Ib./1,000 s.f. (4000 lb./acre) groin strow and tack with 0.1 gal, s.y, asphalt (11 gal./1,000 s.f.). MU-3 Grass -lined channels Install excelsior mat in the channel, extend up the channel banks to the highest calculated depth of flow, and secure according to manufactur's specifications. On channel shoulders, apply 100 Ib./1,000 s.f. grain straw and anchor with 0.1 gal./s y. (11 gai./1,000 s.f.) asphalt. MAINTENANCE (MA) MA-1 Refertilize in late winter or early spring the following year. Mow as desired. MA-3 Inspect and repair mulch and lining. Refertilize in late winter of the following year with 150 lb./acre 10-10-10 (3.5 Ib./1,000 s.f.). Mow regularly to a height of 3-4 inches. MA-4 Topdress with 10-10-10 fertilizer if growth is not fully adequate. MA-5 Topdress with 50 lb./acre (1 Ib./1,000 s.f.) nitrogen in March. If cover is needed through the following summer, overseed with 50 Ib./acre Kobe lespedeza. NC Department of Transportation Permanent Seeding Specifications Permonent erosion control shall be performed as follows: (a) All disturbed areas will be dressed to typical sections and plowed to a depth of 5 inches. The top 2 inches shoal be pulverized to provide a uniform seed. NOTE: Lime should be applied before plowing operation. (b) Lime, seed, and fertilizer shall be applied with necoessary equipment to give uniform distribution of these materials. The hand -bucket method is not acceptable. The following are rates and kinds of these materials to be applied per acre: 75 lbs. Ky 31 Fescue 50 lbs. Pensacola Bahiagrass 50 lbs. Korean Lespedezo 1,000 lbs. 5-10-10 Fertilizer 4,000 lbs. Agricultural Limestone NOTE: Only tested and certified seed shall be used. Seed certification shall be provided to the District Engineer prior to use. (c) Seeded area shall be cultipocked to firm seedbed and cover seed. (d) Grain straw shall be applied over seeded areas as a mulch. No bare ground shall be visible when riding by a mulched area if proper application is achieve. Thick clumps of straw are not permissible, as uniform coverage is expected. (e) Mulched area shall be tacked with asphalt sufficient to hold straw in place. (f) Ditch treatment shall be used in areas where steep grades than f I (more t a 0'%) could cause ditch erosion. Use of jute mesh, excelsior matting, or fiberglass roving is acceptable. Ditch treatment should be installed before mulching operation. PROPERTY INFORMATION: OWNER: BROWNIE HYDER ADDRESS: 80 POND ROAD ASHEVILLE, NC 28804 PIN #: 9627.16-82-7809 ZONING: INDUSTRIAL ACREAGE: 7.292 ACRES DISTURBED AREA: 1.33 ACRES TEMPORARY SEEDING RECOMMENDATIONS FOR LATE WINTER AND EARLY SPRING Seeding Mixture Species Rate(lb. /acre) Rye (grain) 120 Annuol lespedze (Kobe in Piedmont and Coastal Plain,Korean in Mountains) 50 Omit annual lespedeza when duration of temporary cover is not to extend beyond June. SEEDING DATES Mountains -Above 2500ft.: Feb- 15 - May 15 Below 2500ft.: Feb. 1 - May 1 Piedmont -Jan. 1 - May 1 Coastal Plain -Dec. 1 - Apr. 15 SOIL AMENDMENTS Follow recommendations of soil tests or apply 2,000 lb./acre ground agricultural limestone and 750 lb./acre 10-10-10 fertilizer MULCH Apply 4,000 lb./acre straw. Anchor straw by tacking with asphalt, netting, or a mulch anchoring tool. A disk with blades set nearly straight can be used as a mulching tool - MAINTENANCE Refertilize if growth is not fully adequate. Reseed, refertilize and mulch immediately following erosion or other damage. SLOPES MIN. 2' 3:1 MAX. MIN TYPICAL "COMPACTED FILL EXISTING GROUND NOTE: NEW DIVERSION BERMS ARE TO TIE INTO THE EXISTING DIVERSION BERMS. EXISTING DIVERSION BERMS ARE TO MEET OR EXCEED THE ABOVE DIMENSIONS. DIVERSION BERM DETAI 1 CONSTRUCTION SEQUENCE: 1. CLEAR AREA NECESSARY TO CONSTRUCT THE DJERSION BERMS. 2. CONSTRUCT DIVERSION BERMS AND MAKE ANY EMPROVEMENTS TO THE EXISTING BERMS. 3. CONSTRUCT SEDIMENT TRAPS 1 AND 2. 4. APPLY TEMPORAY SEEDING AS SOON AS POSSIBLE DURING CONSTRUCTION. 5. APPLY PERMANENT SEEDING AS SOON AS CONSTUCTION OF ALL EROSION CONTROL MEASURES ARE COMPLETE. NOT TO SCALE 6" RIP -RAP AT A 9" DEPTH EXISTING GROUND (DIVERSION BERM #1) SECTION A -A NOT TO SCALE DB PROPOSED DIVERSION BERM RR Spike(F)I DISTURBED AREAS CP EXISTING CONCRETE �_!! io S 73°49�3"E EXISTING G ROUND FILL 2' �, �. i 106. 67 ` c4 P � �p � _ C 6,3° (DIVERSION BERM #2) Lj 5/8 IR(S) E Pae� SECTION 13-13 s S° D.B. 1247 Pg. 651 NOT TO SCALE EX�T. BASIN AR�A� . FO O. PLAT BOOK 53 Pg.112 SEDIMENT, TRAP #1 O RR Spl�) 1 Q� ' ����DIVERSION BERM #1 _ `� 1 \ ' CP 4 N'10'451�56 g � 1-21 1 ht Te r J k� N \04'32'13"E� i -_ - - - - - EXIST. DIVERSION BERM4. N 27°41'Q -�= ---- �- -' o�� CP --- \ N`53`08'22"E f pL\ �9g�/� �� 0 53.71j -- - -- _ �,$-, 8 EXIST. BASIN -AREA.. /� N 66`58.59'F PP.9)PDSED - - 1i Tie Line �' 65.12' -�D(X1 41 GAS ; PP N 26'03'24"W i ' =N 70� 3_l E = r'.'. �� gg3,1 1 1 1 65.9.5� - ' ��� \ SEDIMENT TRAP 2 I CLARA PARROT T N 71 °22'26"E :: �ROf� EDEI-DRIVE # ��' ca N 72°56 51 ' E \ _ od � L - D.B. 91 E P 738 g 94.30' \ J �� R 31 �" v�ood'P:'.: DISTURBED AREA (T\YP,) `� PLAT BOOK 63 Pg.44 i .• I- Crr- N 74°24' 17"E �� �� ' pD S' C : k 64.09 l PpN� -� CP OPOSED �o�osED ' 1 k \ \� N 56702'28 E _ I�XILiARY S1L 0 .. AiRUARE M� 51= OROPOSED I j CP - CEMENT' SILO PROPOSEa '`y _ 1 .. ( AGGREGAT �. = _ PROPOSED I - I PR . P CONVEYORS - s ,:"� o / M POSED .: �.. ' . \AGGREGATE // C P „ N 78° 17'49"E 1 .: .3.: '.: \ ` L . S 08°36 17 W 62.17' 4 AG REGATE - - ,' BINS .. 4 .. \ r / , \`.13 I ',' ! C NCRETE ... f 29.05 PP Cp I :_l:: c�,, 1 MIN. l �tP / 1000 CID 1 - ...... .. CONC#ETE "a pP / I� CP N 50°09'421,W 5/817 S) UFFE LINE .. / I . �~ 1 1 / �<) �,� " S 08°36' 17"W 11111111 1.24,40 qw,•r . f .. HOPPER J �. /,/ ��,"c / ,� ' 58.88' PROPOSED;'GRAVEL DRIVE IN PIT I N 50'09'42"W CP 8p p4 4 , W �~ ' _ '.. �......f.. .�I ST 278.3$' LAVERSION ERA �ftift`= \-TOP OF BANK (TYP.) 1 � � '�-�--�---- ��`� � � HERSHEL ANDERSON ( N CP TOE OF SLOPE (TYP.) D.B. 1526 Pg. 698 ! 1.45 32 1. 62 36'YIr � SSMH NOTES _ 9 OA �, OM1N.( G 1. AREA COMPUTED BY COORDINATE GEOMETRY ! N 58'26'55"E CP �'6 Z�, 6�R`�NE of 35.08 GENE 2. DEED REFERENCE: DEED BOOK 2064 PAGE 137 1-••26 PAINT & BODY CP ( D.B.1663 Pg.474 CP o?ERA LEASING & EQUIPMENT SALES 3. THIS SURVEY IS OF AN EXISTING PARCEL OF LAND ! j PR D.B. 1828 Pg.585 i N 88'34'02"W 31.61' 1 1 u XIST. CONCRETE FLOW t SPILLWAY winTN TRANSVERSE SECTION CARRY RIP RAP U SIDES OF SPILLWAY - #5 WASHED STONE 1' FLOOD STORAGE ZONE TOP OF BERM TOP ELEV. OF STORMWATER y�Q I 2MAX. SEDIMENT STORAGE ZON L�j l _CTOTAL BASIN CAPACITY 171ri 1' MAX. SEDIMENT DEPTH 1=1' BOTTOM LENGTH MAXIMUM LEVEL OF SEDIMENT COLLECTED. CLEAN BASIN WHEN THIS LEVEL IS REACHED LONGITUDINAL SECTION 2M V- 011 \MN. 5' MIN. N.C.D.O.T. CLASS 1 RIP RAP (UNDERLINE w/ MIRAFI 70OX FILTER FABRIC OR EQUAL 8' MIN. SEDIMENT TRAP SCHEDULE NOTES: 1. TRAP SHALL BE CLEANED OUT AT 12 MONTH INTERVALS OR WHEN MAX. SEDIMENT LEVEL IS REACHED. REPLACE FILTER AS REQUIRED. 2. SOIL SHALL BE COMPACTED TO 95% STD. PROCTOR MAX. DENSITY. 3. ESTABLISH VEGETATION ON BERMS. TRAP BOTTOI,I SPILLWAY BERM NO, LEN. WIDT1 ELEV. WIDTH ELEV. ELEV, 1 72' 66' 3c' 3:i' 990.0' 8.0' 992.0' 994.0' 2 996.0' 8.0' 998.0, 1000.0' SEDIMENT TRAP DETAI CONCTACT INFORMATION: BROWNIE HYDER 2 COUNTRY SPRING DRIVE ASHEVILLE, NC 28804 TELEPHONE: (828)254-7333 CELLULAR: (828)273-1106 NOT TO SCALE II FEb - 2 2001 DENR - NEATER QUALITY POINT SOURCE BRANCH Z C C F.... 1CC w CO CC �� o 0 V z o a O � Q v1 0 � o Q Z o� rQ V z 0 11 o CL_ � � of r m Q 0 SCALE: I" = 60, DATE: 01102101 DRWN. BY: L. HAMPTON CHKD. BY: R. HOFFMAN PROJECT NUMBER G00072 DRAWING NO. SHEET NO. Ei 1 OF 1 OVERHEAD POWER LINES PROPOSED GRAVEL DRIVE l A '.� EXISTING WOOD L FENCE PROPOSED 1000 GAL. DIESEL FUEL TANK ONp x w � p >. C� o ROPOSED K ` SH ARE 1 `: PROPOSED A / AUXILIARY Ln i ! Q / SILO / / fco UJ / PROPOSED N E E 8— 2 2001 W / CEMENT, co• : . . . _ .:- - - L� co X / SILO \ , DENR - WATER OUALITY POINT SOURCE BRANCH OVERHEAD POWER LINES PPQO CC cc(10 Go o 01 r �t1 e cv PROPOSED PROPOSED AGGREGATE • ' - . _,�� • . - ........ AGGREGATE f1 CONVEYORniLl p PROPOSED AGGREGATE BINS cc El Cu Lo O LO Cu C� i Cki cu mm L, a cr? n a CD 0 i 3 i L a� a _ m c 0 L m cu n a 0 a co a� } U bo Z 0 F d Ix U N w 0 CL W " i u u a a SCALE: 1" = 20' DATE: 01/12/01 DRWN, BY: W. FAUCE"E CHKD. BY: R. HOFFMAN PROJECT NUMBER 000072 DRAWING NO. SP t SHEET NO. 1 2 OF 2 4r.. .. ,- .. -. ,.. .... : d:, .. .. .. ... .. :. ... �... _. .. _.. h�d. - - ,h �i' .1-"i •4� .C. Y-: '_.-F -^•D- 5-_: 6 A�. p,. 1 3? a M 8 r $?IVEY EST�MA rE 35 FOO l D 11OM11V Y . • Lq� p USE CREEk FL • • ' �- . e a�FFER 00� Nor �RI � 1 •'�.. T �CE • O BE 1 � • � . VRe ED 9 03 >> SITE DATA 06/^^� , ' .L w V\ SJ ° � PRIMARY SITE USE IS CONCRETE BATCH PLANT, SECONDARY IS SALVAGE YARD 1 ,�ry� �� �W w TRAFFIC GENERATION IS LESS THAN 10 TRUCKS PER HOUR I ' ) '����`. ,: �� 0j'' OPEN SPACE NOT REQUIRED BUT PROVIDED IN BUFFER AREAS 1 '� ,1 ADDITIONAL FIRE FLOW PROVIDED BY USE ONSITE 10,000 GAL STORAGE TANK I Dc 2030-� ADJACENT PROPERTIES ALL TONED COMMERCIAL INDUSTRIAL 1 / •.74 ? INI e-il 1A �� �Y ASHEVIU 3, 563 IFAU. _ A ; 4L LAKE r,{:: �y _ f ►� �a A HNpN .t,, 2.46 «4 BILTMORE =_4 I Oki a G * EXT. ,a�� ® •:� exl�to�e SIT , . "E5T Al ESTATE'X RICE - ! R Le Voter w X-_ \\ I TOPOGRAPHICAL CONTOURS AT 2' INTERVALS 1 �/! `� ` W y kp NO NEW BUILDINGS PROPOSED cj / \ NORMAL HOURS OF OPERATION ARE 6:00 AM TO 5:00 PM 1 1 ��- , N� � �/ 202�� 41 VICINITY MAP TOTAL NUMBER OF EMPLOYEES EQUALS 10 Q / PARKING: REQUIRED PARKING FOR MANUFACTURING 1 SPACE ' 1 � O 1 /! � — BASIN 2 / � � � a•\ y �70 SCALE: 1 " = 2 MILES PER "2 EMPLOYEES ON SHIFT OF GREATEST EMPLOYMENT' D< 5 y O PROVIDED 1 SPACE PER EMPLOYEE PER SHIFT AND 1 � r / `/ CONCRETE APR ` � � ON 20 LF � � \ �i w err — / / \ 1 VAN ACCESSIBLE HANDICAP SPACE PER SHIFT w �W �' �' � CONTACT INFORMATION: TOTAL ACREAGE = 7,292 AC. RIPRAP OUTLET PROTECTION /�• fiOLF 24 CMP BARREL 2,OX y a. ti n 1 D 8. Q BROWNIE HYDER ACREAGE REMAINING WOODED = 1.54 AC. D50=10 , DMAX=15 , DEPTH= 27 1 / / // 1 .-� u' CONCRETE BATCHING OPERATIONS ACREAGE = 4.42 AC. LINE BOTTOM WITH FILTER FABRIC `` - e // �%� 1 �` W � . 2 COUNTRY SPRING DRIVE ` ANTISEEPAGE COL�4R 5.0 X 5.0 � Asl�l_vILL>=, NC 28ao�a I-26 SALVAGE YARD ACREAGE = 1.34 AC. 1 � � � �' TELEPHONE: (828)254-7333 DEVELOPED AREA = 5,76 ; % IMPERVIOUS PRE =29. POST : 42 I , 1 A �} CELLULAR: (828)273--1106 13 II #57 STONE FILTER 10 DIA 1 ti ��„ W ESTIMATED FLOOD FRINGE BASED ON 100-YEAR FLOOD ELEVATIONS SHONM � 1 i 1 � — — � � � W 1 � ON FLOOD INSURANCE RATE MAP NO. 37021C0311 C, DATED MAY 8. 1996, ' — _ — — — — y �° i _ m AND CURRENT TOPOGRAPHY. light pole �� — — Jl BASIN 1. SEE SHEET 2 FOR DATA AND DETAILS — 1� ! �\ y `= _:.� L STORMWATER MANAGEMENT I I EXTENDED DRY DETENTION 1 a �. I P / I --- BENCHMARK—PK NA L IN EO I C�` --W �- USGS ELEVATION 20 2.00 4 0 I EXISTING GRASSED AREA y y -41 EB RIPRAP OUTLET PROTECTION - D50=10", DMAX=15", DEPTH= 27" LINE BOTTOM WITH FILTER FABRIC SEE CL SECTION 5 SHEET 2 CONSTRUCTION ENTRANCE, SEE DETAIL SHEET D-2 10 // I D 51 ti -,, , _ 1 L1 w I O 0 LF DITCH 02.900� � � . �� ��03 \ ,1 �� y ` � w D fi �Y U" of SMW wnH WT RE4 y '... _ �j g — 1 P �� l 131 LF� DI`f+gi 0&07X � o ---------------- ~ __ __ 7EMPORARY L44M of SMAW IM NET RE I e 8 SPOT ELEYATlON-- " -- --- --.� ------------------------------------------------------------------ -- 1 ` + - . ALANG 2044 a y STD. CITY OF AS H EVi' _LE CURB AND - �- -- ----_ WV 2W 1MTH FLAREp pllp y '�`�---` a-_ — Z4' u1�Ll�y T - -- __-_i � -- - -------- --- fL_ W i I Q GUTTER WITH VALLEY GUTTER AT DRIVES --G — - -- ~''•, O �• 1 R . J \ i �-- 7S lF-1s GrP a t.33 \------- -- ----- ---�-------- -- ----- --- -,�'• I cn ,p 7 r r,,.•'"'`� . \ \ 4 �'`, 't•, W 50 LF EA. SILT FENCE SHOTCRElE MAT RE4 \ 20 �INV 42 �o -0 55 LFT-15' C110' O 1.82X6ON9:�� wj Iry 7� 10' x 5w 0mawTE PAD .� • '.. BASMI 1A INV 1000 EX. SANITARY SEWER MH WASI�STAiiON 1\� yMSD# 45434 - ��)_ --� 1 T , / , - J - - S 00'03'07"E 7 2.8 2 — _ No�� INV 2D4Z l / �� a /�41 — �JC p t t S 1 - r �. ` / USE 3 x y 6 FLARE© END CTIOH / L: W L 1 D 1 /. / I 1� S 080 36' 1 7 "W ♦�.� I D 4 • EX. CONCRETE / W d 29.05' / o � �' wITH � / \ �' / / . .,r , Y y. I �{ I I _ .► '�0 I o �` 1 MBE KV 2043 \ n _� / f} / f Y/ ' y r ,• \ / ' / ✓/ y f if 1 0 y �► j III p $ I , 4 v`V , -- -- ..._ T __ .. — a / /. f/ �� S 0 8 3 6 17 W ■ � �� sue• 1 coca ■� V ti: 0-1 LLJ P �� �� p1 i 2 ' /-�i 1� W/ '� 24.40' (01 y n D 3 ! / NEW CONCRETE //­ / ✓ / Z t 35' BUFFER LINE--- y ` y i. =� L 4, y d L '.L ` ,L. .y. ,y •L W W V:' IL ` 4rj� / •` `' f / I � /� NOT TO BE DISTURBED . �w t w\`~,_ i � n d �,% / p • % A r L ~w w, i rWft �y �7 / I 1 / z� S O ° O 4 °41 „o.F�y�`, 4 L vv Lu APPROXIMATE CL HOMINY CREEK EXISTING NATURAL BERM ~ — it - � .F �--- TOP OF BANK TYPICALLY 40-60 FOOT RISE < _< O Q s • f N - _L ` w _� �`� k w� y sue— L-- y— L _� + ` `_ /� L y W y W y a / C� C� - - _ TOE OF SLOPE (TYP.) 4 � � 7 �'�-;mil +� ...�r�.l..._ � .+r r. W �Ir—, — r � � �' � raw �/_{ ' 1 1� 'y vL' �+ '• s V+ vL—k-- 't I ��i llll f ` cr ' , t BOUNDARY DATA 3' w y w W W' •W�s G�� o W� ^_ -� TY W V� J� .L J� I EXISTING 2' CONTOUR 6 y�� �< �� ���1 T `� j w 2 of — — -- — EXISTING 10' CONTOUR + EX. SANITARY SEWER MHM Mr PROPOSED CONTOUR MSD# 45443 J J --•-- - -- DRAINAGE AREAS 1-26 PAINT & BODY 6g p Q a D.B.1663 Pg.474 1N� ,,�`l%11iCAI, ,�f';2 � � GRAPHIC SCALE NEW CONCRETE PAVEMENT `"='t"�' s / f �3 i` Srrr MLfjIN do N 58 26'55"E P [' 0 ! �� L �' SCALE: 1 =40- xD I inE -- PROPOSED SEWER WITH CLEANOUT 35.08' P?TVJ '2 _ PRELIMINARY NOT DATE: M.BETO22,2i N 8 8° 3 4' 0 2 "W �,�� DwN. BY: �r. e�N rary E >xT -•-----•-•---- EXISTING WATER SERVICE CONNECTION • me>z = 4© #� 31 .61 '�"•••�-�F ,.��' cHKD. £3Y: R. Norary y y EXISTING WOODS PINE AND HARDWOODS] WITH WOODY UNDERBRUSH ''; �PROJECT NUMBER FoR CONSTRUCTION ',,`+re111�1111r GOOo72 a EXISTING CONCRETE PAVEMENT ZONING: COMMERCIAL INDUSTRIAL DRAWING NO. SHEET NO. G--2 1 OF 2 t i STORMWATE R DATA BASIN DATA BASIN 1 (INCLUDES BASIN 1 A) TOTAL ACREAGE = 3,06 NCESCDP FIGURES 1 DAY PRECIP. 8.03H 2YR-3.8 IN, 8.03J 10YR- 6.0 IN, 8.03M 10OYR- B.OIN HYDROLOGIC SOIL GROUP = C SILTY LOAM NCESCDP TABLE 8.03, RUNOFF DEPTH 1.45 4.63 6,57 SCS CURVE NUMBER 88 RUNOFF VOLUME AC.FT. 0.37 1.1B 1.67 REQ. Q--10 YR MAR. DISCHARGE RATE 17.23 CFS, TIME AT OREQ= (1.18)(43560)/17.23= 2983 SEC IOYR POST (CONTROL 0.98 CFS) VOLUME _ (0.98x2,983)=2,924 CU.FT. 10YR POST VOLUME PROVIDED = 35,990 CU.FT. REO. TREATMENT VOLUME 1' RUNOFF "FIRST FLUSH' = 0-255 AC.FT= 11,108 CU.FT REQ. STORAGE. 20% TREATMENT VOLUME = 0.051 AC. FT. = 2.222 CU.FT REQ. DETAIN FIRST FLUSH DRAWDOWIN IN 2 TO 5 DAYS, USE FORMULA SECTION 8.07.8 DRAWDOWN TREATMENT VOL. IN 2 DAYS sq.ft. Ao= As h T Cd 20,428 10,901 (48) (1) (20,428) Ao=0.027 = 20 -1/2' holes EMERGENCY SPILLWAY CALCULATIONS FIG. 8.03F RAINFALL INTENSITY 100YR = 9.3 IN/HR RATIONAL METHOD: 15=CIA=(0.93)(9.3)(3.06)=26.46 cfs Q over -flow earth berm = Q 100 - Q outlet O overflow earth berm = 26.46 - 14.50 = 11.96 or 12 cfs LENGTH OF CONTAINMENT BERM (SHARP CRESTED WEIR) 172 LFT HEAD OVER WEIR : _Q_ Ht.5 AREA OF FLOW OVER WEIR = (172)(0.11)=18.92 SO. FT 12 C = H1.5 CALCULATE VELOCITY OVER WEIR Q=AV (.66XI72) 1 V = 18.92 sa Fr/SEC 0.11 ft = H EMERGENCY SPILLWAY NOT REQUIRED BERM SERVES AS 100YR GRASSED OVERFLOW BARREL DESIGN FLOW LESS THAN 17,23 CFS, USE NCESCDP TABLE 8.07a CMP AT 1' HEAD - 60LF- 24' CMP AT 2.0% SLOPE 15.60 X 1.05 = 16.68 cfs at 2' head RISER IS 30' CMP BASIN 2 TOTAL ACREAGE - 1.09 ELEV. DEPTH AC. SQ. FT AVG. AREA AVG. VOLUME 2032 .19 8,259 2 5,078 , 10156 2030 .04 1.897 2 987 1,974 2028 .00 76 TOTAL VOLUME 12,130 CU.FT. ELEV DEPTH AC. SO. FT AVG. AREA AVG. VOLUME 2036 .35 15.223 2 10,725 21,450 TREATMENT 2.9' (11,108) 2032 .14 6,227 2 4,590 9,180 2030 .07 Z953 STORAGE 1.1' (VOL PROVIDED 2,222) 2 2,019 4,038 2028 .02 1,085 TOTAL VOLUME 34,668 (0.80) AC.FT. BASIN 1 A 2045 .05 2,085 1 1.694 1.694 2044 .03 1,302 2 706 1,412 2042 .00 110 TOTAL VOLUME 3,106 CONSTRUCTION SEQUENCE: OBTAIN PERMITS, INSTALL CONSTRUCTION ENTRANCE, INSTALL OUTLET PROTECTION ON POND ROAD REMOVE AND STOCKPILE TOPSOIL FROM CUT/FILL AREAS, CONSTRUCT BASION 1 & 1 A AND SECTION 4 DITCH, CONSTRUCT SECTION 3 DITCH, INSTALL SILT FENCE, CONSTRUCT BERM FAR NORTHER REACH, CONSTRUCT TRUCK WASH BASION AND CONNECTING PIPE, GRADE POND ROAD INSTALL TEMPORARY SILT FENCE 4' OFF ROADWAY UNTIL SIDWALK AND SEEDING COMPLETE, INSTALL SILT FENCE AT TOP AND BOTTOM OF SOUTH BANK PRIOR TO SEWER CONSTRUCTION, CONSTRUCT BASIN #3 PRIOR TO CONSTRUCTING PARKING AREA, FINISH SITE WORK, CLEAN OUT ALL BASINS, PERMENTALY SEED PERMENTALY SEED ALL AREAS BASIN 3 TOTAL ACREAGE - 0.18 REQUIRED SEDIMENT STORAGE = (0.18) x 1800 CU.FT.= 324 CU.FT. REQ. Q-10 YR. MAX. DISCHARGE = 0.23 CFS DISCHARGE PIPE 10 LF 4- CMP AT 5.4 % SLOPE, FLOWING FULL VELOCITY 2.63 CFS ELEV. DEPTH AC. SO. FT AVG. AREA AVG. VOLUME 1006 .01 447 2 272 5,44 1004 -00 97 TOTAL VOLUME 544 SUBBASIN AREA RATIONAL C HEIGHT LENGTH SLOPE DESC. Te 1-10yr 0-1Oyr TREATMENT ACRES PRE POST FT FT % MIN. 1N PRE cfs POST EAST SIDE ONSITE FLOW IMPROVED AREA BASIN 1 D1 0.22 0.77 0.95 1'0 218 4.5 1.5 6.4 1.08 1,34 D2 0.21 0.95 0.95 5 121 4.13 1.0 1.28 1.28 D3 2.31 0.90 0.95 12 480 2.5 3.5 13.31 14.04 6 301 2.0 2.8 1 D4 0.32 0.78 0.80 9 280 3.21 2.5 1.60 1.64 3.06 0.88 0.93 17.23 18.21 UNIMPROVED SALVAGE AREA D5 1.09 0.60 0.40 14 286 4.90 1.8 6.4 4.18 1 2.79 BASIN 2 OFFSI TE ROAD D6 0.25�1.6 0.80 20 366 5.46 2.2 6.4 0.96 1.28 NATURAL FLOW TO CREEK BANK D9 0.25 0.4 0.40 18 330 5.45 2.2 0.64 0.64 0.50 [).50 0.60 1.60 1.92 WEST SIDE ONSITE FLOW D8 0.26 0.20 0.20 12 157 7.64 1.2 6.4 0.33 0.33 OFF SITE ROAD D7 0.13 0.6 0.8 16 222 7.21 1.5 0.50 0.66 PLACE RIPRAP AROUND CUP /ND EARTH LiNW1UY 2• HIM AND Y EACH SIDE If INTO SAW MINIMUM 24 LF OONLREIE APRON-e PAO WTH WWF e COMPACTED AM STONE -. ELEV 2= EST, 01" � ETC W401111 122 -'""-1 �4 SECTION V MIC H BY MANNNWS E4U. DITCH SLOPEX - 2.5 GEN, N_0.02S DESIGN 1110-14.04 Cis VELOCTY 4.1E FPS, NORMAL OEM 3" EnSTING COVER IS CONCRETE AND ESTABLISHED TALL GLASS OUSTRO CONOTIR fS SHOW No EROSION IMPROVEMENT NOT REQUIRED TEMPORARY SEEDING RECOMMENDATIONS FOR LATE WINTER AND EARLY SPRING Seeding Mixture Species Rate(lb./acre) Rye (grain) 120 Annual lespedza (Kobe in Piedmont and Coastal Plain,Korean in Mountains) 50 Omit annual lespedeza when duration of temporary cover is not to extend beyond June. SEEDING DATES Mountains -Above 2500ft.: Feb. 15 - May 15 Below 2500ft.: Feb. 1 - May 1 Piedmont -Jan. 1 - May 1 Coastal Plain -Dec. 1 - Apr. 15 SOIL AMENDMENTS Follow recommendations of soil tests or apply 2,000 lb./acre ground agricultural limestone and 750 lb./acre 10-10-10 fertilizer. MULCH Apply 4,000 lb./acre straw. Anchor straw by tacking with asphalt, netting, or a mulch anchoring tool. A disk with blades set nearly straight can be used as a mulching tool. MAINTENANCE Refertilize if growth is not fully adequate. Reseed, refertilize and mulch immediately following erosion or other damage. EXTENDED DRY DETENTION BASIN MAINTENANCE REQUIREMENTS BASINS 1 & 1a All grassed areas should be mowed at least twice annually Remove collect debris whenever it accumulates, or at least twice annually Inspect annually after a rain event to ensure thot the basin is operating as designed At a minimum, items that should be included in the inspection are: Clogging of the outlet or too rapid a release Erosion on the banks and at outlet and inlet Sediment accumulation and the need for removal, make mark on outlet pipe at elev. 991.7 to verify accumulation depth Remove wood vegetation and burrowing animals from all embankments Remove accumulated sediment from pea gravel pack to allow for proper drawdown, verify drawdown of treatment water within 2 to 5 days. BASIN 3 TO BE CLEAN OUT QUARTERLY AND/OR AFTER LARGE RAIN EVENTS . . . ...... ................... * ........ * .............. SEEDBED PREPARATION SP SP--1 FILL SLOPES 3:1 OR STEEPER TO BE SEEDED BY A HYDRAULIC SEEDER (PERMANENT SEEDING) 1) Leave the last 4-6 inches of fill loose and uncompacted, allowing . :.... rocks, roots, large clods and other debris to remain on the slope. 2 Roughen sloe faces by making grooves 2-3 inches deep, perpendicular to the slope. CL 3) Spread lime evenly over slopes at rates recommended by soil tests. >'t SP-2 Fill slopes 3:1 or steeper (temporary seedings) err ►rr c 1) Leave a loose, uncompacted surface. Remove large clods, rocks, and :s debris which might hold netting above the surface. 2) Spread lime and fertilizer evenly at rates recommended by soil tests. 3) Break up large clods and rake into a loose, uniform seedbed. a: 4) Rake to loosen surface }ust prior to applying seed. SP-4 Gentle or flat slopes where topsoil is not used. r: 1) Remove rocks and debris. 2) Apply lime and fertilizer at rates recommended by soil tests; spread evenly and incorporate into the top 6" with a disk, chisel plow, or rotary tiller. s 3) Break up large clods and rake into a loose, uniform seedbed. 4) Rake to loosen surface just prior to applying seed. SEEDING METHODS (SM) SM-1 Fill slopes steeper than 3:1 (permanent seeding)CU Use hydraulic seeding equipment to apply seed and fertilizer, a woad fiber mulch at 45 lb./1,000 s.f., and mulch toekifer. +.` V SM-2 Gentle to flat slopes or temporary seedings :: ■ ` LIM 1) Broadcast seed at the recommended rate with a cyclone seeder, drop = , spreader, or cultipacker seeder. .... 2) Rake seed into the soil and lightly pack to establish good 'contact. 9 Y P MULCH MU MU-1 Steep slopes (3:1 or greater) In mid -summer, late fall or winter, apply 100 Ib./1,000 s.f. grain straw, `..... ' cover with netting and staple to the slope. In spring or early fall use 451b %1 000 s.f. Wood fiber in a h droseeder slurry. MU-2 High -maintenance vegetation and temporary seedings 9 g P Y 9 :c Apply 1 b. 1 0 f. 4 I 90 a0 �. aaa b. acre rain straw and tack with - pp y / ( / ) g ac th 0.1 gal./s.y. asphalt (11 gal./1,000 s.f.). MU-3 Grass -lined channels Install excelsior mat in the channel, extend up the channel banks to the highest calculated depth of flow, and secure according to manufacture's specifications. On channel shoulders, apply 100 lb./1,000 s.f. grain straw and anchor with 0.1 gol./s.y. (11 gal./1,000 s.f.) asphalt. MAINTENANCE (MA) *► MA-1 Refertilize in late winter or early spring the following year. Mow as desired. � MA-3 Inspect and repair mulch and lining. Refertilize in late winter of theCo following year with 150 lb./acre 10-10-10 (3.5 Ib./1,000 s.f.). Mow regularly to a height of 3-4 inches. UJ � � � N MA-4 Topdress with 10-10-10 fertilizer if growth is not fully adequate. co MA--5 Topdress with 50 Ib./ocre (1 Ib./1,000 s.f.) nitrogen in March. If cover isqqc II needed through the following summer, overseed with 50 lb./ocre Kobe lespedeza. J Z N e Q N C L Uj 0 1 � `,� X 0 CL 0 co SECTION 5 J ROAD SLOPE% 4.38 - 4.86 GUTTER SLOPE% = 4.16 a o CAPACITY FULL 32 CFS VELOCITY 11CFS �' m FIG. 8.06a D50 = 10", APRON LENGTH 20 /' �• � o CL V /'• '• /•' In �• I• �'• -_ .00 �Uj o • ¢ a �• owe .00.. II• '• LLJ I US W LtJ 400 r .01 L]� -1 v V)4-' �/ �� Imo' �I• .00 w 000 C) .000 • I • €.L.1 LLJ C) F_ Lik or U) CONSTRUCTION LIMITS TYP �- COMPACT CLAY/SILT FILL IN ETY.AVATED CUTOFF ffM4CH; MN- BOTTOM WIDTH 2'. DEPTH 2•. TRIP WIDTH 14• EXISTING GRADE - - cc Q i' AT PATH WATERTIGHT JOINTS AT ALL CONNECTIONS AND PIPE SECTIONS 10' LEVEL SEC. z a� z� SLOPE o TRASH RACK, L � / m m °�° � 14 DEFORMED BARS WELDED M 2 3' 9, C. MD BOLTED TO r THE PIPE KITH 6 FLANGES, I ROW TOTAL DISTURBED AREA IS 2.35 ACRES ,,AL4'ANLL .� o Q - - - - _ _ _ _ - _ DISTURBED AREAS9 '= CDcn w SECTION 6CN " TIE ICDP CT`_IACKFI ..?�.Ai'1LG 1 �= 1 V V i i SCALE I--2V HORr,--e VERr N FABRIC AND 6 I IIGH HUMP TO DIVERT RUNOFF, 8' WIDE �_ 1 W^�W 70 LF 40' OFF EOP :,Vw .� 601scA>_e 1'=40' IDATE: FE'BRUARY 2.2, 21 RE FILTER FABRIC N= MEET THE MOUp1 E11TS RELIMINARY NOT[. (F SECTION 171, Ti]fUM SILT FENCE OF THE °�� ,. � B • Y' .�`� DRWN. BY: M. BENT(NV CONSTRUCTION ENTRANCE KRIMAC SPECIFTIJIGTIAYs aiBIENT EDITIIx SCALE ,'-7G• HORN 1•.4• VERY C11KD. BY: R. HOFFMAN NOTE: SEE DETAIL SHEET D-1 ASSOCIATED WITH S TE PLAN FOR JUTE NET DETAIL SILT FENCE PLACEMENT DETAIL FOR CONSTRUCTION PROJECT NUMBER Ns TYPE c ZONING. COMERCIAL INDUSTRIAL c00072 NOTE: ALL EROSION CONTROL MEASURES TO BE INSTALLED IN ACCORDANCE WITH NORTH CAROLINA STATE AND CITY OF ASHEVILLE STANDARDS AND MANUFACTURES RECOMMENDATIONS, OWNER RESPONSIBLE DRAVINGNO. SHEET NO. D-2 2 4F 2 ELEV 203E TOP OF WN 3 IF 2.0'. ESr, GRASS EX CONCRETE zs � SECTION 2 V DITCH BY ELAN 4WS EAU, DITCH 90" - 2.0 GEN, N-0-025 OESIM 00-14.04 = VEIOC TC ZN FPS, NORMAL DEPTH "W CIdS TINC COVER IS CONCRETE AND ESTA9L19ED TALL GRASS EASTING CONDITIONS SiHOR' NO EROSION LphpYF]E7VT NOT REQUIRED BENCH BERM INTO EMSTNG BERM aN NORTH SIDE AND BOTTOM ON STE FILL MATUM COMPAM IN r LIFTS AT = STANDARD PROCTOR USE CUT MATERIAL FROM UNDIUK HOUND TANKS AND BASH. STRAW MULCH WITH JUTE NET TYPICAL TOP OF BERM AND INTERIOR FACE OF BASIN 1 AND HASAW TA 1/2 YD CONCRETE ANCHOR TRASH RACK MAX SPACE BETWEEN BARS 3' 4 2' FLOOD LEVEL W DGl RISER CREST ELEV. 2036 1 IV TREATMENT FOR 1• RUNOFF 057 STONE PLACED AS FILTER AROUND RESTER DRAIN HOLES, ROUTINE MANT04CE REQUIRED TO ASSURE DRAIN OPERATIONS a e° SET ELEV. STAKE ON FACE OF BEMf AS MEAN OUT NOICATOR e° 0-EV 2D33., REM CLEAN OUT OF :SEDIMENT (MR9C) ° ,.T• STORAJZ VOLUME 2= C,UfT, r ELEV. 203L PFRSFRI£ EWING GRASS WFM HASH AREA TYPICAL (NOT TO SCALE) tO-1/2' OM HOLES EA. SIDE OF BARREL SPACED Y APART NC Department of Transportation Permanent Seeding Specifications Permanent erosion control shall be performed as follows: (a) All disturbed areas will be dressed to typical sections and plowed to a depth of 5 inches. The top 2 inches shall be pulverized to provide a uniform seed. NOTE: Lime should be applied before plowing operation. (b) Lime, seed, and fertilizer shall be applied with neccessary equipment to give uniform distribution of these materials. The hand -bucket method is not acceptable. The following are rates and kinds of these materials to be applied per acre: 75 lbs. Ky 31 Fescue 50 lbs. Pensacola Bohiogross 50 lbs. Korean Lespedeza 1,000 lbs. 5-10-10 Fertilizer 4,000 lbs. Agricultural Limestone NOTE: Only tested and certified seed shall be used. Seed certification shall be provided to the District Engineer prior to use. (c) Seeded area shall be cultipacked to firm seedbed and cover seed, (d) Grain straw shall be applied over seeded areas as a mulch. No bare ground shall be visible when riding by a mulched area if proper application is achieve. Thic< clumps of straw are not permissible, as uniform coverage is expected. (e) Mulched area shall be tacked with asphalt sufficient to hold straw in place. (f) Ditch treatment shall be used in areas where steep grades (more than 10%) could cause ditch erosicn. Use of jute mesh, excelsior matting, or fiberglass rovng is acceptable. Ditch treatment should be installed before mulching operation. 204E 3.5 SECTION 3 V MIN BY MAfiNNeS EQU. ORCH SL0K% - Z90. 14-•0.02 DESIGN 010-0.34 CFS VELOOTY 4AS FPS NORMAL DOM &Sr FINAL GROUND COVER TALL FESCUE T-Y DS T (E24X0.32)(0.0a) T-R50 TA$E 8.059 USE STRATI WITH NET T-1,45 LB/SQ.FT TEMPORARY COVER STRAW MULCH WITH NETTING LAY NETTING PAR/t1E 11714 FLOW AwNoR NETTN6 N A 8- TRENCH, OVERLAP STRIPS BY ,E- AND ANCHOR SECTION 4 v DITCH BY M.NNIOn EAU. DITCH 31.OPE'1< 107, N.0.025 DESGN 010-4-; CFS VELOCITY 3,73 FPS. NORMAL DEPTH S23' FINAL GROUND COVER TALL FESCUE T-Y D s T 46�4XM44x0.0307) TABLE &059 USE STRAW WITH NET T-1.45 LB/ .FF TEMPORARY COVER STRAW MULCH WITH NETTING LAY METING PARALLE WITH FLOW ANCHOR NETTING IN A E• TRENCH, OVERLAP STRIPS BY Ir AM ANCHOR a r5 FAIT STEEL. PMT, NQNAL SPACING 4'-0 / CHRA NO E AT LOW RAM l3GMIN, POST TO RADE. IN ATTACH FILTER CLOTH TD „ " " SI¢VEN YRRE FABRIC CLEA 6 DEEP - 2 TO 3 DiA WASHED STONE WITH FILTER FABRIC UNDER S"ONE 1�VEN WIRE FINM MIC AHD I INTOP0.E TING R FROM arr/1=>k.L ART (TYP.) ATTACHED TD EACH t1I]4CH BERM INTO ETBSTM4c rAUID OR CIONSRRl1CT z' KEYWAY/WTOFF TRENCH 2 % SLOPE MIN POND ROAD PW AKTISEEPACE COLLAR ASWi WATER TIGHT SEAL WITH CMP. CLEAR CWP BY 1.5'.NOT CLOSER THAN 2' TO A JOINT FILTER FABRI 20' D50 = 10" DMAX =15"