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Home My WebLink AboutNCG020770_COMPLETE FILE - HISTORICAL_20101027STORMWATER DIVISION CODING SHEET NCG PERMITS PERIlIIIT NO. V (�O�U� )` (� DOC TYPE VHISTORICAL FILE ❑ MONITORING REPORTS DOC DATE ❑ aol} D� YYYYM M DD AA NC®ENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Governor Jeff Brown 2634 Richlands Highway Jacksonville, NC 28540 Dear Mr. Brown, Coleen H. Sullins Director October 27, 2010 Dee Freeman Secretary Subject: NPDES Compliance Evaluation Inspection Onslow Sand Mine, Onslow County Certificate of Coverage NCG020770 A site visit was conducted at the Onslow Sand Mine in Onslow County on October 13, 2010. The purpose of the visit was to provide technical assistance to your consultant, Mark Walton, concerning the Operation and Monitoring Plan (O&M). The O&M is considered approved, as last revised. Please install the wetland monitoring wells immediately (if you have not already done so), and begin monitoring the wetlands to establish a baseline prior to any excavation. Document the date you begin excavation. If you need a copy of your permit text, you may find it at the following website: http://portal.ncdenr.org/web/wq/ws/su/npdessw. It is your responsibility to read and understand your permit and comply with the requirements therein. I am glad to answer any questions you may have concerning the requirements of the general permit. Please do not hesitate to contact me at 910- 796-7343. Sincerely, (_U� Linda Willis Division of Water Quality Surface Water Protection Section Enclosure CC: DWQ WIRO NCG020 Onslow w/att DWQ CO w/att . Wilmington Regional Office 127 Cardinal Drive Extension Wilmington, NC 28405 Phone: 910-796-7215 / FAX: 910-350-2004 Internet: www.ncwaterauality.org One NorthCarolina Natura!!ff An Equal 0pportunity/Affirmafive Aclion Employer 50% Recycled/10% Post Consumer Paper Customer Service 1-877-623-6748 Permit:. NCG020770 SOC: County: Onslow Region: Wilmington Compliance Inspection Report Effective: 10/05/10 Expiration: 12/31/14 Owner: Onslow Sands Inc Effective: Expiration: Facility: Onslow Sands - East Jacksonville Bellmont Ave Contact Person: Jeff Brown Directions to Facility: System Classifications: Primary ORC: Secondary ORC(s): On -Site Representative(s): Related Permits: Midway Park NC 28544 Title: Phone: 910-346-8266 Certification: Phone: Inspection Date: 10113/2010 Entry Time: 01:00 PM Exit Time: 02:30 PM Primary Inspector: Linda Willis � �# ZY Zo ICa Phone: 910-796-7396 i Secondary Inspector(s): Reason for Inspection: Other Inspection Type: Compliance Evaluation Permit Inspection Type: Mining Activities Stormwater Discharge COC Facility Status: Q Compliant ❑ Not Compliant Question Areas: Storm water (See attachment summary) Page: 1 Permit, NCG020770 Owner - Facility: Onslow Sands Inc Inspection Date: 10/1312010 Inspection Type: Compliance Evaluation Reason for Visit: Other Inspection Summary: A site visit was conducted as a result of the development of the operation and monitoring plan. The consultant, Mark Walton agreed to meet on site to familiarize the regional office inspector with the site peculiarities. The location of the reference well was in question considering it is approximatley 8 feet lower in elevation than the monitoring wells located along the boundary of the pit and the wetlands. There is a significant drop in elevation particularly along the northeast point of the property (where the private cemetary is located). The reference well will help to demonstrate drought effects at this site. The 0 & M plan is approved. You must install the wells and begin monitoring immediately to help develop baseline conditions. The baseline helps determine the hydrology of the wetland prior to any potential mine pit impacts. Please contact this office to inform DWO when the monitoring begins. Page: 2 Permit: NCG020770 Owner - Facility: Onslow Sands Inc Inspection Date: 10113/2010 Inspection Type: Compliance Evaluation Reason for Visit: Other Stormwater Pollution Prevention Plan Yes No NA NE Does the site have a Stormwater Pollution Prevention Plan? ❑ ❑ ■ ❑ # Does the Plan include a General Location (USGS) map? ❑ ❑ ■13 # Does the Plan include a "Narrative Description of Practices"? ❑ ❑ ■ ❑ # Does the Plan include a detailed site niap including outfall locations and drainage areas? ❑ ❑ ■ J # Does the Plan include a list of significant spills occurring during the past 3 years? ❑ ❑ ■ # Has the facility evaluated feasible alternatives to current practices? ❑ ❑ ■ ❑ # Does the facility provide all necessary secondary containment? ❑ n ■ ❑ # Does the Plan include a BMP summary? ❑ ❑ ■ ❑ # Does the Plan include a Spill Prevention and Response Plan (SPRP)? Cl ❑ ■ ❑ # Does the Plan include a Preventative Maintenance and Good Housekeeping Plan? Cl ❑ ■ ❑ # Does the facility provide and document Employee Training? ❑ ❑ ■ ❑ # Does the Plan include a list of Responsible Party(s)? ❑ ❑ ■ ❑ # Is the Plan reviewed and updated annually? ❑ Cl ■ ❑ # Does the Plan include a Stormwater Facility Inspection Program? ❑ ❑ ■ ❑ Has the Stormwater Pollution Prevention Plan been implemented? ❑ ❑ ■ ❑ Comment: This is due one year from the date you received you certificate of coverage. Qualitative Monitoring Yes No NA NE Has the facility conducted its Qualitative Monitoring semi-annually? ❑ ❑ ■ ❑ Comment: The requirement to begin monitoring is in effect upon receipt of the certificate of coverage. Analytical Monitoring Yes No NA NE Has the facility conducted its Analytical monitoring? ❑ ❑ ■ ❑ # Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas? ❑ ❑ ■ ❑ Comment: The analytical monitoring is in effect from the date you receive your certificate of coverage. Permit and Outfalls Yes No NA NE # Is a copy of the Permit and the Certificate of Coverage available at the site? ❑ ❑ C ❑ # Were all outfalls observed during the inspection? ❑ ❑ ■ ❑ # If the facility has representative outfall status, is it properly documented by the Division? ❑ ❑ ■ ❑ # Has the facility evaluated all illicit (non Stormwater) discharges? ❑ Cl ■ ❑ Page: 3 Permit: NGG020770 Owner - Facility: Onslow Sands Inc Inspection Date: 10/13/2010 Inspection Type: Compliance Evaluation Reason for Visit: Other Comment: Please ensure you retain a copy of your certificate of coverage. Each . discharge point for dewatering and any stormwater sediment trap overflows (if the need to construct arises) is considered an outfall. All outfalls must be monitored unless you request a representative outfall status. Representative outfall status cannot be given until at least one year of data has been collected. Page. 4 Willis, Linda From: Larsen, Cory Sent: Wednesday, October 20, 2010 1:57 PM To: Mark Walton Cc: Willis, Linda Subject: RE: O&M Status Attachments: Onslow Cover & COC.pdf Mark, I can't give you that estimate because I won't be approving it. That approval will come from the Wilmington Regional Office. The plan is due to WIRO by November 51h as you will remember from the issuance letter attached. Now we had asked Onslow to provide a reference monitoring location months ago and the one you eventually proposed was not appropriate so we have directed you to place it in another location. You raised the concern of having substantially different elevations between monitoring location #1 and the RWQ-directed reference location. I've tabulated the estimated elevations below just to get an idea of the differences. Monitoring Location Approximate Elevation [ft] MW#1 88 M W#2 82 M W#3 79 M W#4 88 MW#5 78 MW#6 79 Average 82.3 . OWQ Reference Location 80 As you can see there is a significant range of elevations between all monitoring locations but the reference location that we asked for is pretty close to the average elevation of all wells. And since we are concerned with groundwater elevation, not surface elevation, the reference location we have proposed should provide that information to us. I know that on Oct. 71h, Linda Willis requested you to call her to schedule a site visit and I don't know if that occurred yet or not but she will have the final call on your reference monitoring location and approval of your O&M plan so I suggest that you provide her with everything she needs to make her determination. Finally, I want to reiterate that all wells must be hand -installed. We do not want to see equipment tracking through wetland areas for these shallow installations. If you can jet the wells w/o a vehicle or heavy equipment that maybe acceptable but all attempts to hand auger first shall be made first before contacting Linda if problems arise. From: Mark Walton mailto:mark waltonen ineerin .net Sent: Wednesday, October 20, 2010 11:16 AM To: Larsen, Cory Subject: 0&M Status Cory, Can you give me an estimate on when the O&M Plan for Onslow Sands will be approved. We would like to install the monitoring wells ASAP before any digging starts but don't want to do anything before we know the locations are approved. OPERATION AND MONITORING PLAN ONSLOW SANDS, INC. BELLMONT AVENUE Midway Park, Onslow County, NC Prepared in accordance with General Permit No. NCG020000 NCG02770 April 6, 2010 Revised June 24, 2010 Revised September 16, 2010 Revised September 28, 2010 Revised October 6, 2010 Owner Onslow Sands, Inc 115 Atlas Brown Drive Jacksonville, NC 28540 Prepared By: Walton Engineering P.O. Box 895 Borgaw, North Carolina 28425 WALTON EN INEERINC� Mining Operations In Phase I of mining, water that collects in the mine pit will be pumped out into a constructed settling pond on the subject property. Sediment from the water will be collected in the settling pond. The water will filter out of the basin through an outlet spreader, ultimately flowing into nearby Rocky Run. As soon as the mine pit reaches approximately one-half (0.50) acre in size, the pit will be converted into a settling pond. Additional mining will be separated from the settling pond by leaving an earthen berm between the areas. Water from the remaining mining activity will be pumped into the settling pond so it can infiltrate back into the ground. Four (4) 24" corrugated plastic pipes will be provided to handle overflow in case of storms or in case dewatering exceeds the infiltration capacity of the settling pond. The spill way will also lead to the settling pond used in Phase I of mining: The buffer areas around the settling -pond will be maintained so that rainwater and runoff water from the stockpiles will flow into the mine pit. When mining is completed, the berm dividing the settling pond and the mine pit will be removed so he entire mine area will form a pond per the reclamation plan in the State Mining Permit Application. Pumping Frequency The mine in Phase 1 of the mining process will be pumped as needed to keep the area dry for mining. Pump periods will be monitored by hour meters attached to the pumps. For pumps with no hour meters a pump log will be maintained. These records will be used to determine the Total Flow per the monitoring requirements in Table 1. If there is a negative effect found on the hydrology in the area, the pumping frequency will be modified accordingly. Hydrology Monitoring There will be 6 monitoring wells and 1 reference well installed around the proposed mine area to monitor the effects on the hydrology in the area. There will be one installed approximately 327' southeast of discharge pipe # 1 from the settling pond. The second will be installed approximately 74' from the #2 settling pond discharge pipe. The third and fourth will be installed 85' northwest and 416' southwest, respectively, from the #3 discharge pipe from the settling pond. The fifth well will be located 60' from the west side of the site and the sixth well will be installed 35' behind the Pearson Family -Cemetery. All six monitoring wells will be installed at a depth from the wetland line of at least 10'. The wells will be 2" in diameter and installed via hand auger in wetland and undisturbed buffer areas at a depth of 7'-10' b.g.s. (below ground surface) using standard well screen. The well riser will be approximately 3' -- 4' a.g.s. (above ground surface) so that the wells will be easy to see when sampling. The reference monitoring well will be located directly east of Proposed Monitoring Well #1 and immediately adjacent to the 25' natural buffer. The well monitoring shall use automatic monitoring devices set to record.water levels four times a day (4 x day) for the first six months and then checked daily upon written agreement of DWQ if the data demonstrates no significant effect on hydrology. The monitoring will continue to be weekly after dewatering until the groundwater levels are up to previous levels pre-dewatering. Should shallow groundwater data show trends (i.e., > 20%) in deviation from reference wetland hydrology during normal rainfall years, show increases or decreases in shallow groundwater levels, and/or show wetland standards are compromised for supporting wetland hydrology (1 SA NCAC 2B .0231), corrective action measures will be put in place at the direction of DWQ. Structural/Non-Structural BW's The site contains one settling pond used to accept the excess water from the mine. The settling basin contains four (4) 24" corrugated plastic pipes which allows the excess water to flow via hose or pipe into four (4) separate outlet spreaders adjacent to the wetlands. Additionally the mine is setup to act like a settling pond before the excess water is pumped to the settling pond. Mining occurs in the middle of the mine pit with the pump will be located on the north end of the pit. By locating the pump at the farthest point away from the mining, it allows the most possible sediment settling before the water is discharged. There is one above ground fuel tank kept on site to re -fuel the on -site equipment. The fuel tank is surrounded by a dirt dike to contain any possible spills. Additionally the fuel pump contains a fuel shut off valve and the pump and hose are in new condition. All vehicle maintenance will occur near the office and away from the mine pit or any area which might flow into the mine pit. Maintenance The settling pond will be inspected monthly and within 24hrs after any quality storm events_ The settling pond will be checked regularly and sediment will be removed as needed. The pond water level will be maintained at the invert of the outlet pipe or lower and a maximum depth of 20'. The settling pond and outlet pipes will be monitored accordingly and sediment will be removed as needed. The outlet pipe will be maintained to specifications of the Mine Plan. The outlet pipe will be checked on a regular basis and maintained as needed. Discharge Monitorimg Discharge monitoring and reporting will be performed as specified in Table 1. If the effluent limitations are greater than specified in Table 2 the monitoring frequency will be modified to monthly- monitoring of the effluents. Monitoring Rei)orts Discharge monitoring results in accordance with the terms of this permit, NCG020000, shall be submitted no later than 30 days from the end of the monitoring period. Duplicate signed copies of all reports required shall be submitted to the NC DENR Division of Water Quality Dater Quality' Section, ATTENTION.- Central Files, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617. Jeff Brown will report orally any noncompliance within 24 hours Jeff Brown becomes aware of the noncompliance. Table 1. Monitoring Requirements for Mine Dewatering Discharge Characteristics Units Measurement Frequency Sample Type Sample Location pH S.U. Quarterly Grab E Settleable Solids mil Quarterly Grab E Total Suspended Solids mgll Quarterly Grab E Turbidity NTU Quarterly Grab E or U,D Total Flow MG Quarterly - E Table 2. Effluent Limitations for Process Wastewater and Mine Dewatering Discharge Characteristics Discharge Limitations Monthly Average Daily Maximum Settleable Solids 0.1 ml/I 0.2 ml/1 Total Suspended Solids (industrial Sand Mining) 25 mg/1 45 mg/I pH Range - 6.0 - 9,0 Turbidity (Freshwater non -trout streams) - 50 NTU Turbidity (Non -trout lakes and saltwaters) - 25 N'ru Turbidity (Trout waters) - 110 NTU NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quaiity Beverly Eaves Perdue Coleen H. Sullins Governor Director October 5, 2010 7�� Jeff Brown Onslow Sands, Inc. 115 Atlas Brown Drive Jacksonville, NC 28540 Subject: General Permit No. NCG020000 Onslow Sands, Inc. COC NCG020770 Onslow County Dear Mr. Brown: Dee Freeman Secretary In accordance with your application for a discharge permit received on May 20, 2010 and subsequent submittals of additional information, we are forwarding herewith the subject certificate of coverage to discharge under the subject state — NPDES general permit. This permit is issued pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the US Environmental Protection Agency dated October 15, 2007 (or as subsequently amended). Please take notice that this certificate of coverage is not transferable except after notice to the Division of Water Quality. The Division of Water Quality may require modification or revocation and reissuance of the certificate of coverage. Please be aware that mine dewatering at your site has the potential to impact adjacent wetlands. The specific requirements. for mine dewatering at facilities near wetlands can be found in Part III, Section E of your permit. You must have an approved Operation and Monitoring Plan before mine dewatering discharges occur at your facility. Discharging mine dewatering wastewater without Plan approval will be subject to enforcement action. The current 0&M Plan and Mine Pit Site Plan show the reference wetland location/well at Proposed Monitoring Well#1. This location is in close proximity to the proposed excavation and is not appropriate for use as a reference location. Thus, a reference wetland location with monitoring well shall be added directly east of Proposed Monitoring Well #1 and immediately adjacent to the 25' natural buffer of the property boundary. Additionally, all monitoring wells shall be installed by hand auger in wetland and undisturbed buffer areas. Please make the above changes to the appropriate documents and submit a revised Operation and Monitoring Plan and full set of plans for your facility to Ms. Linda Willis of the Wilmington Regional Office within 30 days of your receipt of this permit. These changes will constitute an approved O&M Plan for your facility. Please note that mine dewatering wastewater includes wet pit overflows caused solely by direct rainfall and groundwater seepage for this type of mining operation. Any discharge of this water (and any stormwater commingled with it) is subject to the effluent limitations in this permit. This general permit allows the discharge of stormwater and certain types of wastewater from your facility. In your application, you specified that only mine dewatering water would be discharged from this facility. If separate point -source discharges of stormwater occur (i.e., stormwater notcombined with Wetlands and Stormwater Branch T011C 1617 Mail Service Center, Raleigh. North Carolina 27fi99-1617 i Y OI t h Cairo l l rlit Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 Phone: 919.807-6300 t FAX: 919.807-64941 Customer Servfoe: 1-877-623.6748 Alatl�1'a i rr f/ Internet: www.ncwaterqua4y.org An Equal opportunity +. Alfirmalive Action Employer .A[ Mr. Jeff Brown Onslow Sands, Inc. -- NCG020770 October 5, 2010 mine dewatering water], you will be required to adhere to the conditions in this permit for stormwater discharges. This permit does not affect the legal requirements to obtain other permits which may be requ_ired`by the Division of Water Quality or permits required by the Division of Land Resources, .Coasfal Area Management Act or any other federal or local governmental permit that may be required. t 11 If you have any questions concerning this permit, please contact Cory Larsen at ,cory.larsen@ncdenr.gov or 919-807-6365 or Linda Willis at 910-796-7343. Sincerely,/ �J, forCol•een H. Sullins cc: Wilmington Regional Office, Linda Willis Walton Engineering, Adrienne Rogers [ amr2907@waltonengineering.net] Central Files Stormwater Permitting Unit Files STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT. AND NATURAL RESOURCES DIVISION OF WATER QUALITY GENERAL PERMIT NO. NCG020000 CERTIFICATE OF COVERAGE No. NCG020770 STORMWATER AND MINE DEWATERNG DISCHARGES NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the Federal Water Pollution Control Act, as amended, ONSLOW SANDS, INC. is hereby authorized to discharge stormwater and 3nine dewatering wastewater from a facility located at Onslow Sands, Inc. Belhnont Avenue Midway Park, NC Onslow County to receiving waters designated as Rocky Run, a class C; NSW water in the White Oak River Basin, in accordance with the effluent limitations, monitoring requirements, and other conditions set forth in Parts I, I1, I1I, IV, V, and VI of General Pen -nit No. NCG020000 as attached. This certificate of coverage shall become effective October 5, 2010. This Certificate of Coverage shall remain in effect for the duration of the General Permit. Signed this day, October 5, 2010. for Coleen:H. Sullins, Director' Division of Water Quality By the Authority of the Environmental Management Commission LOCATION MAP: -C ` � �� e� s �\I "� r•' ...... ..- I it r.ry •` �i 44 f' .- . - .:.y • : ,�.j •�••.• �� .� .1...1i ►'^i.7i.A • � _ ',4f . rr�:� .— ..�,. 4 •-' •.l � 1 :�_.`.' •r •' F` '+ • •• � .� T80f a — gel _ 1• .. r, 'li• Ted+ier rt .� ih t r _s ,3- ' M ' ` • ram. {3� 1\r\\l�i NCG020770 Map Scale 1:20,000 Onslow Sands, Inc. ax •a- i 1 I,t ONSLOW SANDS, INC. Lab tude : 3411 44' 33" N Longitude: 770 18' 49" W County: Onsl ow Receiving Stream: Rocky Run Stream Class: C, NSW Sub -basin: 03-05-02 (White 04, River Basin) t�e_� Facility Location Thank YOU, Mark Walton R. Mark Walton Professional Engineer Walton Engineering PO Box 895 Burgaw, NC 28425 910-259-4800 OPERATION AND MONITORING PLAN ONSLOW SANDS, INC. BELLMONT AVENUE Midway Park, Onslow County, NC Prepared in accordance with General Permit No. NCG020000 NCG02770 April 6, 2010 Revised June 24, 2010 Revised September 16, 2010 Revised September 28, 2010 Revised October 6, 2010 Owner Onslow Sands, Inc 115 Atlas Brown Drive Jacksonville, NC 28540 Prepared By: Walton Engineering P.O. Box 895 Burgaw, North Carolina 28425 WALTON 1V _ IC RING Mining Operations In Phase I of mining, water that collects in the mine pit will be pumped out into a constructed settling pond- on the subject property. Sediment from the water will be collected in the settling pond. The water will filter out of the basin through an outlet spreader, ultimately flowing into nearby Rocky Run. As soon as the mine pit reaches approximately one-half (0.50) acre in size, the..pit will be converted into a settling pond. Additional mining will be separated from the settling pond by leaving an earthen berm between the areas. Water from the remaining mining activity will be pumped into the settling pond so it can infiltrate back into the ground. Four (4) 24" corrugated plastic pipes will be provided to handle overflow in case of storms or in case dewatering exceeds the infiltration capacity of the settling pond. The spill way will also lead to the settling pond used in Phase I of mining. The buffer areas around the settling pond will be maintained so that rainwater and runoff water from the stockpiles will flow into the mine pit. When mining is completed, the berm dividing the settling pond and the mine pit will be removed so he entire mine area will form a pond per the reclamation plan in the State Mining Permit Application. Pumping Frequency The mine in Phase I of the mining process will be pumped as needed to keep the area dry for mining. Pump periods will be monitored by hour meters attached to the pumps_ For pumps with no hour meters a pump log will be maintained. These records will be used to determine the Total Flow per the monitoring requirements in Table 1. If there is a negative effect found on the hydrology in the area, the pumping frequency will be modified accordingly. Hydrology Monitorin There will be 6 monitoring wells and 1 reference well installed around the proposed mine area to monitor the effects on the hydrology in the area. There will be one installed approximately 327' southeast of discharge pipe #1 from the settling pond. The second will be installed approximately 74' from the 92 settling pond discharge pipe. The third and fourth will be installed 85' northwest and 416' southwest, respectively, from the #3 discharge pipe from the settling pond. The fifth well will be located 60' from the west side of the site and the sixth well will be installed 35' behind the Pearson Family Cemetery. All six monitoring -wells will be installed at a depth from the wetland line of at least 10'. The wells will be 2" in diameter and installed via hand auger in wetland and undisturbed buffer areas at a depth of 7'-10' b.g.s. (below ground surface) using standard well screen. The well riser will be approximately 3' — 4' a.g.s. (above ground surface) so that the wells will be easy to see when sampling. The reference monitoring well will be located directly east of Proposed Monitoring Well #1 and immediately adjacent to the 25' natural buffer. The well monitoring shall use automatic monitoring devices set to record water levels four times a day (4 x day) for the first six months and then checked daily upon written agreement of DWQ if the data demonstrates no significant effect on hydrology. The monitoring will continue to be weekly after dewatering until the groundwater levels are up to previous levels pre-dewatering. Should shallow groundwater data show trends (i.e., > 20%)-in deviation from reference wetland hydrology during normal rainfall years, show increases or decreases in shallow groundwater levels, and/or show wetland standards are compromised for supporting wetland hydrology (15ANCAC 2B .0231), corrective action measures will be put in place at the direction of DWQ. Structural/Non-Structural BMP's The site contains one settling pond used to accept the excess water from the mine. The settling basin contains four (4) 24" corrugated plastic pipes which allows the excess water to flow via hose or pipe into four (4) separate outlet spreaders adjacent to the wetlands. Additionally the mine is setup to act like a settling pond before the excess water is pumped to the settling pond. Mining occurs in the middle of the mine pit with the pump will be located on the north end of the pit. By locating the pump at the farthest point away from the mining, it allows the most possible sediment settling before the water is discharged: There is one above ground fuel tank kept on site to re -fuel the on -site equipment. The fuel tank is surrounded by a dirt dike to contain any possible spills. Additionally the fuel pump contains a fuel shut off valve and the pump and hose are in new condition. All vehicle maintenance will occur near the office and away from the mine pit or any area which might flow into the mine pit. Maintenance The settling pond will be inspected monthly and within 24hrs after any quality storm events. The settling pond will be checked regularly and sediment will be removed as needed. The pond water level will be maintained at the invert of the outlet pipe or lower and a maximum depth of 20'. The settling pond and outlet pipes will be monitored accordingly and sediment will be removed as needed. The outlet pipe will be maintained to specifications of the Mine Plan. The outlet pipe will be checked on a regular basis and maintained as needed. Discharge Monitoring Discharge monitoring and reporting will be performed as specified in Table 1_ If the effluent limitations are greater than specified in Table 2 the monitoring frequency will be modified to monthly monitoring of the effluents. Monitoring Reports Discharge monitoring results in accordance with the terms of this permit, NCG020000, shall be submitted no later than 30 days from the end of the monitoring period. Duplicate signed copies of all reports required shall be submitted to the NC DENR Division of Water Quality, Water Quality Section, ATTENTION: Central Files, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617. Jeff Brown will report orally any noncompliance within 24 hours Jeff Brown becomes aware of the noncompliance. Table 1. Monitoring Requirements for Mine Dewatering Discharge Characteristics Units Measurement Frequency Sample Tv a Sample Location pH s.u. Quarterly Grab E Settleable Solids ml/1 Quarterly Grab E Total Suspended Solids mg/l Quarterly Grab E Turbidity NTU Quarterly Grab E or U,D Total Flow MG I Quarterly - E Table 2. Effluent Limitations for Process Wastewater and Mine Dewatering Discharge Characteristics Discharge Limitations Monthly Average Daily Maximum Settleable Solids 0.1 MIA 0.2 m1/I Total Suspended Solids (Industrial Sand Mining) 25 mg/I 45 mg/l pH Range - 6.0 - 9.0 Turbidity (Freshwater non -trout streams) - 50 NTU Turbidity (Non -trout lakes and saltwaters) - 25 NTU Turbiditv (Trout waters) - 10 NTU A 44- HCD R North Carolina Department of Environment and Natural Resources Beverly Eaves Perdue Govemor Jeff Brown Onslow Sands, Inc. 115 Atlas Brown Drive Jacksonville, NC 28540 Dear Mr. Brown: Division of Water Quality Coleen H. Sullins Director October 5, 2010 Dee Freeman RECEYVED Secretary OCT0 8 2010 BY: Subject: General Permit No. NCG020000 Onslow Sands, Inc. COC NCG020770 Onslow County In accordance with your application for a discharge permit received on May 20, 2010 and subsequent submittals of additional information, we are forwarding herewith the subject certificate of coverage to discharge under the subject state — NPDES general permit. This permit is issued pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the US Environmental Protection Agency dated October 15, 2007 (or as subsequently amended). Please take notice that this certificate of coverage is not transferable except after notice to the Division of Water Quality. The Division of Water Quality may require modification or revocation and reissuahce of the certificate of coverage. Please be aware that mine dewatering at your site has the potential to impact adjacent wetlands. The specific requirements for mine dewatering at facilities near wetlands can be found in Part III, Section E of your permit. You must have an approved Operation and Monitoring Plan before mine dewatering discharges occur at your facility. Discharging mine dewatering wastewater without Plan approval will be subject to enforcement action. The current O&M Plan and. Mine Pit Site Plan show the reference wetland. location/well. at Proposed Monitoring Well #1. This location is in close proximity to the proposed excavation and is not appropriate for use as a reference location, Thus, a. reference wetland location with monitoring well shall be added directly east of Proposed Monitoring Well #1 and immediately adjacent to the 25' natural buffer of the property boundary. Additionally, all monitoring wells shall be installed by hand auger in wetland and undisturbed buffer areas. Please make the above changes to the appropriate documents.a.nd.submit a. revised. Operation and. Monitoring_ Plan. and. full set of plans.for your facility to. Ms. Linda Willis of the Wilmington Regional Office within 30 days of your receipt of this permit. These changes will constitute an approved O&M Plan for your facility. Please note that mine dewatering wastewater includes wet pit overflows caused solely by direct rainfall and groundwater seepage for this type of mining operation. Any discharge of this water (and any stormwater commingled with it) is subject to the effluent limitations in this permit. This general permit allows the discharge of stormwater and certain types of wastewater from your facility. In your application, you specified that.only mine dewatering water would be discharged from this facility. If separate point -source discharges of stormwater occur (i.e., stormwater natcombined with Wetlands and Storrnwater 8randl 1617 Mail Sen+� Center, Ra"h, North Carolina 27699.1617 One Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 NNat -thCarolina Phone: 919-807-63001 FAX: 9 19-807-6494 1 Customer Service: 1-877-623.6748 �� >(� Internet: www.newatesquality.org YY r lT7 WALTON LNGINEERING October b, 2010 Division of Water Quality ATTN: Linda Willis 127 Cardinal Drive Extension Wilmington, NC 28405 Re: O&M plan revisions per Cory Larsen on behalf of Onslow Sands Inc. Sand Mine Dear Linda, Please find enclosed two (2) copies of the site plan and two (2) copies of the revised O&M Plan depicting revisions requested per Cory Larsen's cover letter for NPDES permit# NCG020770. If you have any questions or need additional information please call me at 910-259-4800. Sincerel," Adrienn -Ro er Environmental Scientist TZFC'P-TVjED FBY:_ Tel: 910-2594800 PO Box 995, Burgaw, North Carolina, 28425 Fax: 910-259-1779 VYALTQN EN INEERIN June 24, 2010 Mr. Larsen, I have reviewed in detail the lateral effects predicted in your analysis by the Skaggs Method. I have determined that two important input values are significantly different from actual conditions at the subject site. The Weighted Hydraulic Conductivity input value was 12.5125 in/hr, which correlates to coarse -grained well -sorted sand. That value was based on the Soil Survey properties for Baymeade soils. The Soil Survey data only goes to a depth of 78" or 6.5'. The water table starts at 5'. The mine depth will be 20'. Therefore the Soil Survey values do not apply to the zone being modeled. The actual soil hydraulic conductivity should be that of a loamy sand or fine sand based on my field evaluation of texture from excavated samples. The correct vale should be about 118 in/day, which equals 4.92 in/hr. The larger the Hydraulic Conductivity, the larger the predicted lateral effect by the Skaggs Method, When I reviewed our calculations prior to original submittal, I missed the fact that we used Soil Survey permeability values for the Hydraulic Conductivity at depths greater than those�of the Survey. The Drainable Porosity used was 0.035, which correlates to the low end of clays/silty-clays. The actual Drainable Porosity should be on the order of 0.15 to 0.18 which ranges from the high end of well -structured loams to the low end of sandy soils. The average of these values is 0.165. The larger the Drainable Porosity, the smaller the predicted lateral effect by the Skaggs Method. 1 have attached modeling using the Skaggs Method with revised inputs per above Using the revised inputs, the model predicts a lateral effect of 192.5 feet. Also, I have compared the results of Modeling with the Skaggs Method and the Ellipse Equation. They produce very nearly equal results given equal inputs. Sincerely, qn�'V� R. Mark Walton, PE Tel: 910-259-4800 PO Box 895, Burgaw, North Carolina, 28425 Fax: 910-259-1779 Pit Skaggs—method_Summary_by Mark walton Skaggs Method Program Determination of Lateral Effect of Roadside Ditch or Borrow Version 1.2.0 Copyright 2006-2007 North Carolina State University Written in C# Language by Brian D. Phillips Last software Update: February 28,2007 Project Run Date and Time: 6/24/2010 9:52:48 AM Project Information -Project-Title/Description: 'Onslow sands Soil Series or ID: Fine Sand User Name: Mark Walton Site Parameters ------------------------------------------------------------------ Impoundment Type: 2 (1=Roadside Ditch 2= Borrow Pit) State: North Carolina county: Onslow Surface Storage: 1 inch Depth to water surface: 5 ft T25 value: 9.2 days Depth to Restrictive Layer: 20 ft Drainable Porosity: 0.165 Weighted Hydraulic Conductivity: 4.9200 inch/hour Hydraulic Conductivity Data by La er Bottom Depth of Layer (in� Layer 1 240 Layer 2 0 Layer 3 0 Layer 4 0 Layer 5 0 Page 1 Conductivity (i n/h r) 4.92 0 0 0 0 os 1 5 4 DO 2025/703 DO 2660/159 DB 392/533 plastic pipe (Outfall) all be 3' below surface c� z m VICINITY MAP (N.T.S) Total Site Area — Total Wetlands Cemetary = CONSTRUCTION ENTRANCE _ =tlands Survey and Map 50' UNDISTURBED BUFFER = 17.11 Ac +/- 6.79 Ac 0.13 Ac +/-- y 4. 41 PIPE OR HOSE FOR — — — DEWATERING = 25` NATURAL BUFFER = EROSION CONTROL MATTING = PY'ALTONENGINEERJAIGT PO Box 895, Bur aw, NC 28425 910 259-4800 m by: AMR I Project #: OPERATION AND MONITORING PLAN ONSLOW SANDS, INC. BELLMONT AVENUE Midway Park, Onslow County, NC Prepared in accordance with General Permit No. NCG020000 Modification NCG020637 April 6, 2010 Revised June 24, 2010 Owner Onslow Sands, Inc 115 Atlas Brown Drive Jacksonville, NC 28540 Prepared By: Walton Engineering P.O. Box 564 Burgaw, North Carolina 28425 RECEIVEIJ JUN 2 4 2010 BY: YY ALTON EN IN fRIN Mining Operations In Phase I of mining, water that collects in the mine pit will be pumped out into a constructed settling pond on the subject property. Sediment from the water will be collected in the settling pond. The water will filter out of the basin through an outlet spreader, ultimately flowing into nearby Rocky Run. As soon as the mine pit reaches approximately one-half (0.50) acre in size, the pit will be converted into a settling pond. Additional mining will be separated from the settling pond by leaving an earthen berm between the areas. Water from the remaining mining activity will be pumped into the settling pond so it can infiltrate back into the ground. Three (3) 24" corrugated plastic pipes will be provided to handle overflow in case of storms or in case dewatering exceeds the infiltration capacity of the settling pond. The spill way will also lead to the settling pond used in Phase I of mining. The buffer areas around the settling pond will be maintained so that rainwater and runoff water from the stockpiles will flow into the mine pit. When mining is completed, the berm dividing the settling pond and the mine pit will be removed so he entire mine area will form a pond per the reclamation plan in the State Mining Permit Application. Pumping Frequency The mine in Phase I of the mining process will be pumped as needed to keep the area dry for mining. Pump periods will be monitored by hour meters attached to the pumps. For pumps with no hour meters a pump log will be maintained. These records will be used to determine the Total Plow per the monitoring requirements in Table 1. if there is a negative effect found on the hydrology in the area, the pumping frequency will be modified accordingly. Hydrology Monitoring There will be 4 monitoring wells installed around the proposed mine area to monitor the effects on the hydrology in the area. There will be one installed approximately 327' southeast of discharge pipe #1 from the settling pond. The second will be installed approximately 66' from the #2 settling pond discharge pipe. The third and fourth will be installed 85' northwest and 416' southwest, respectively, from the 93 discharge pipe from the settling pond. All four wells will be installed at a depth from the wetland line of at least 10'. The wells will be either 2" (hand auger) or 1 '/4" (jet) in diameter at a depth of 7'-10' b.g.s. (below ground surface) using standard well screen. The well riser will be approximately 3' — 4' a.g.s. (above ground surface) so that the wells will be easy to see when sampling. The wells will be checked on a weekly basis for the duration of dewatering. The monitoring will continue to be weekly after dewatering until the groundwater levels are up to previous levels pre-dewatering. Structural[Non-Structural BMP's The site contains one settling pond used to accept the excess water from the mine. The settling basin contains three (3) 24" corrugated plastic pipes which allows the excess water to flow via hose or pipe into three (3) separate outlet spreaders adjacent to the wetlands. Additionally the mine is -setup to act like a settling pond before the excess water is pumped to the settling pond. Mining occurs in the middle of the mine pit with the pump will be located on the north end of the pit. By locating the pump at the farthest point away from the mining, it allows the most possible sediment settling before the water is discharged. There is one above ground fuel tank kept on site to re -fuel the on -site equipment. The fuel tank is surrounded by a dirt dike to contain any possible spills. Additionally the fuel pump contains a fuel shut off valve and the pump and hose are in new condition. All vehicle maintenance will occur near the office and away from the mine pit or any area which might flow into the mine pit. Maintenance The settling pond will be inspected monthly and within 24hrs after any quality storm events. The settling pond will be checked regularly and sediment will be removed as needed. The pond water level will be maintained at the invert of the outlet pipe or lower and a maximum depth of 20'. The settling pond and outlet pipes will be monitored accordingly and sediment will be removed as needed. The outlet pipe will be maintained to specifications of the Mine Plan. The outlet pipe will be checked on a regular basis and maintained as needed. Discharge Monitorin Discharge monitoring and reporting will be performed as specified in Table 1. if the effluent limitations are greater than specified in Table 2 the monitoring frequency will be modified to monthly monitoring of the effluents. Monitoring Reports Discharge monitoring results in accordance with the terms of this permit, NCG020000, shall be submitted no later than 30 days from the end of the monitoring period. Duplicate signed copies of all reports required shall be submitted to the NC DENR Division of Water Quality, Water Quality Section, ATTENTION: Central Files, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617. Jeff Brown will report orally any noncompliance within 24 hours Jeff Brown becomes aware of the noncompliance. Table 1. Monitoring Requirements for Mine Dewatering Discharge I I Measurement I Sample I Sample Characteristics Units Frequency Type Location pH S.U. Quarterly Grab E Settleable Solids ml/l Quarterly Grab E Total Suspended Solids mg/l Quarterly Grab E Turbidity NTU Quarterly Grab E or UP Total Flow MG I Quarterly - E Table 2. Effluent Limitations for Process Wastewater and Mine Dewatering Discharge Characteristics Discharge Limitations Monthly Average Daily Maximum Settleable Solids 0.1 ml/l 0.2 ml/l Total Suspended Solids (Industrial Sand Mining) 25 mgll 45 mg/1 pH Range - 6.0 - 9.0 Turbidity (Freshwater non -trout streams) - 50 NTU Turbidity (Non -trout lakes and saltwaters) - 125 NTU Turbidity (Trout waters) - 110 NTU Beverly Eaves Perdue Governor Mr. Adrienne Rogers Walton Engineering PO Box 895 Burgaw, NC 28425 Dear Mr. Rogers: NC®ENR North Carolina Department of.Environment and Natural Resources Division of Water Quality Coleen H. Sullins Dee Freeman Director RECEIVED Secretary JUN 2 12010 June 18, 2010 By Subject: General Permit No. NCG020000 Request for Additional Information, 2nd Request Onslow Sands, Inc, COC No. NCG020770 Onslow County The Division of Water Quality's Stormwater Permitting Unit has reviewed the information submitted on behalf of Onslow Sands, Inc. received by DWQ on June 10, 2010 and has determined that the application is not yet complete. The following information is needed to continue the stormwater review: The wetland setback requirement calculated utilizing the Skaggs Model for borrow pits was not determined correctly. A revised model summary is attached and shows a lateral effect of 666 ft vs the 61 ft originally calculated. Depth to restrictive layer was assumed to be equal to the total mining depth, and the drainable porosity was revised per the model's recommendation for this value. The new lateral effect clearly shows that dewatering operations have the capability to negatively impact a very large tract of surrounding wetlands and increases our concern that dewatering, as proposed, cannot occur without wetland impacts. Based on the size of the proposed mine, a setback of this size is not feasible. Potential alternatives to the setback requirement may include (1) wet mining of the site to minimize wetland impacts or (2) design and implementation of an extensive wetland rehydration and monitoring program as part of a detailed Pumping O&M Plan. It should be noted that the current Operation and Monitoring Plan does not contain the necessary components or sufficient detail to satisfy the requirements of alternative 2 above. Please revise mining plans and the O&M plan according to one of the alternatives above and resubmit for further consideration, if desired. The requested information should be received by this Office by July 9, 2010, or the application will be returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the application fee. Please reference COC No. NCG020770 on all correspondence. If you have any questions concerning this matter feel free to contact me at (919) 807-6365 or cory.larsen@ncdenr.gov. 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 Qne Phone: 919-807.63001 FAX: 919.807.64921 Customer Service: 1-877-623-6748 North Carol i n a Internet: www.ncwaterquaiity.org � �N//J_ , An Equal opportunity 1 Affirm�}��La" Affirmative Action Employer A �/ Mr. Adrienne Rogers Onslow Sands, Inc. - NCG020770 June 18, 2010 Sincerely, Cory rse Environmental Engineer cc: Wilmington Regional Office, Linda Willis Central Files Stormwater Permitting Unit Files 1617 Mail Service Center, Raleigh, North Carolina 27699.1617 Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 Phone: 919-807-63001 FAX: 919.907-64921Customer Service: 1.877.623-6746 Internet: www.ncwaterquality,org An Equal Opportunity 1 Affirmative Action Employer NorthCarolina Natu! lly DWQ Skaggs —Method —Summary itrttrirrtdrirsY�ldriFiririrdrrt>;rticrt*�Yrtrtrti;rtir�rtl'4ciriririrsYir��Yi♦'�Y:+Yitirrt*sYirir>tiiki;*iri:i:dri: �,ti:rA,ii:::'.:sYkikic�dr*AAikdr�iY'CrsYdr� Skaggs Method Program Determination of Lateral Effect of Roadside Ditch or Borrow Pit Version 1.2.0 copyright 2006-2007 North Carolina state University written in C# Language by Brian D. Phillips Last software update: February 28,2007 Project Run Date and Time: 6/16/2010 1:51:10 PM �': 'xsf:::YtYie:Y it sY sY it sY �4 it sY it Ycrtrtrtrt4e 4rrt:; 4rrtrtrtir �Y �r it irrt rti:rtrti: it si eY it it �Y frrtrtrtrtisrtrtrtir:Yrtkrtrtrtrtdr it it it it it it it it dr t. .t it it it it sk is >r� Project Information Project Title/Description: ONSLOW SANDS soil series or ID: Baymeade - urban User Name: CL - DWQ Site Parameters y Impoundment Type: 2 (1=Roadside Ditch 2= Borrow Pit) state: North Carolina county: onslow surface storage: 1 inch Depth to water surface: 5 ft T25 value: 9.2 days Depth to Restrictive Layer: 20 ft Drainable Porosity: 0.035 weighted Hydraulic conductivity: 12.5125 inch/hour Hydraulic conductivity Data by La er Bottom Depth of Layer (in� Conductivity (in/hr) Layer 1 36 13 . Layer 2 49 4 Layer 3 240 13 Layer 4 0 0 Layer 5 0 0 ---------------------------------------------- ---------------------------------------------- Lateral Effect: 666.5 ft ------------------------------------------------------------------------------------------- - Page 1 w�- NCDENR North Carolina Department of Environment and Natural Resources DiAion of Water Quality Beverly Eaves Perdue Coleen H. Sullins Dee Freeman Governor Director Secretary MEMO TO: Cory LarsenYbo FROM: John Dorney V DATE: July 20, 2010 RE: Comments on wetland monitoring plan fcr Onslow Sands project, Onslow County -- Staff from the Wetlands Program Development knit who are familiar with wetland monitoring have reviewed the "Operation and Monitoring Plan - Onslow Sands, Inc. Bellmont Avenue" prepared by Walton Engineering as revised on June 24, 2010. We believe that the plan needs major changes as outlined below before approval by DWQ in order to provide assurance that wetland standards (15A NCAC 2B..0231) are met. Please contact nee at 733-9646 or Rick Savage at 715-3479 if you have any questions. 1. Additional monitoring wells -- Two (2) additional wells need to be established in the wetland near the "Pearson Family Cemetery" and on the west side of the site since it is possible that groundwater withdrawal could result in alteration of the hydrology for these wetlands. 2. Relocated well - The well (Proposed Monitoring Well #2) is located directly downstope from Discharge Pipe #2, This well must be relocated away from the discharge in order to be representative. We suggest a location midway between Discharge Pipe #2 and Discharge Pipe # 1. 3. Additional discharge location for water - We suggest that an additional discharge location be added to the plan on the west side of the site in order to provide assurance that the hydrology of this area is not altered. A located near (but not directly upslope from) Proposed Monitoring Well # 4 would be appropriate. 4. Well monitoring - Well monitoring shall use automatic monitoring wells set to record water levels - four times a day for the first six months. The frequency can then be lowered to daily upon written agreement of DWQ if the data demonstrate no significant effect on hydrology. 5. Reference wetlands - The applicant will need to identify the wetland types on site (using the recently adopted SWAM wetland type;i_see weblink athttpa/portal.ncdenr.org/c/docu_ meet_library/get�fiie?uuid=d93ece45-aeb5-420c-bcd5- 07698149711b8�rouptd=38364) aand then propose monitoring locations (at least one for each wetland type) near the proposed mine. DWQ will need to approve those locations in writing. 6. We suggest that the applicant propose hydrology criteria which.shall be.maintained compared to the reference wetlands. The criteria should be a percentage deviation from the water level shown in`6e reference wetlands and DWQ will need to approve that criterion. Please let us know if you need additional information. Cc: Rick Savage Ginny Baker File copy 401 Oversight/Express Review Permilting Unit 1650 Mail Service Center, Raleigh. North Carolina 276994650 Location: 2321 Crabtree Blvd„ Ralegh, North Carolina 27b04 Phone: 919.733-1786 t FAX: 919.733-6893 Internet: ht1pJih2o,enr,slate,nc.Wrimettandsl One NorthCaroiina 4Nat!mally An Equal cpWIuroy i Alfumabve Action Employer NODE R North Carolina Department of Environment and Nat Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Governor Director June 1, 2010 Mr, Adrienne Rogers Walton Engineering PO Box 895 Burgaw, NC 28425 sources —cree lt-reeman . JUN 0 7 2010 Secretary Subject: General Permit No. NCGO20000 Request for Additional. Information Onslow; Sands, Inc, COC No. NCG020770 Onslow County Dear Mr. Rogers: The Division of Water Quality's Stormwater Permitting Unit has completed a preliminary review of the permit application for Onslow Sands, Inc. received by DWQ on May 20, 2010 and has determined that the application is not complete. The following information is needed to continue the stormwater review: 1. .Please provide settling basin sizing information and a section drawing in addition to a discussion on ,how basin discharges will meet the effluent limitations found in Table 8 of NCG020000. 2. Please submit your Skaggs method inputs and outputs/calculations used for determining wetland setback distances. 3. More information on the estimated dewatering rate is required. Please provide a more detailed discussion of the calculations performed to arrive at an estimated withdrawal rate of 13,437 gpd. 4. Level spreaders used to rehydrate surrounding wetlands with diffuse flow should be designed in -ordancr with Chapter 8 of the BMP Manua. 5. Please send copies of all mining plan sheets including cross sections to supplement Figure 1. Also revise Figure 1 to show a 50' undisturbed wetland buffer instead of 20'-50' vegetative and unexcavated buffers. This request for additional information is in response to a preliminary review. The requested information should be received by this Office by July 2, 2010, or the application will be returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the application fee. Please reference COC No. NCG020770 on all correspondence. If you have any questions concerning this matter feel.free to contact me at (919) 807-6365 or cory.larsen@ncdenr.gov. 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Location: 512 N. Salisbury St Raleigh, North Carolina 27604 One Phone: 919-607-63001 FAX: 919.807-64921 Customer Service: 1.877-623-6748 North C aro l i na Internet: www.ncwaterquality.org 'J,'}� l Y�� /"/� , An Equal Opportunity\ Affirmative Action Employer A �l J Mr. Adrienne Rogers Onslow Sands, Inc. - NCG020770 June 1, 2010 Sincerely, Cory Environmental Engineer cc: Wilmington Regional Office, Linda Willis 3 Central Files Stormwater Permitting Unit Files I 1617 Mail Service Center, Raleigh, North Carolina 27699.1617 Location: 512 N. Salisbury St, Raleigh, North Carolina 27604 One Phone: 919-807-63001FAX: 919.807-64921Customer Semite:1.877.623.6748 NQ)e Cc`lIO�1I1;t Internet: www-ncwaterqualtive Action ��i�� An Caoz1 Opponunily 1 Ailirmative Aclian Employer L `/ THIS PLAT ACCURATELY DEPICTS THE JURISDICTION OF SECTION 404 O= THE CLEAN WATER Survey References: ACT PURSUANT TO THE 1987 CORPS OF ENGINEERS WETLAND DELINEATION MAUNAL AS WETLAND CLASSIFICATIONS: WEYERHAEUSER REAL ESTATE MB 29, PG 091 D B 2025 /703 \ v � DETERMINED BY DAVID BAILEY OF THE U.S. ARMY CORPS OF ENIGNEERS AND CERTIFIED ON NWI: PF01/4 = Palustrine �� DEVELOPMENT COMPANY MB 50, PG 215 DB 2660/159 A SEPARATE PLAN PREPARED BY (F. WADE DAVENPORT, PLS), N.C.R.L.S Forested Broad-leaved Deciduous; Needle -leaved ` DB 3104, P 214 MB 57, P 91-E MB 40, PG 084 DB 392/533 Ever reen Intermittent) BUFFER SPECIFICATIONS: PER ZONING ORDINANCE ONSI OW COUNTY, APPFNDICF A ZONING, ARTICLE XVI, SECTIONS 1603.1.3 and 1603.5 pertain to this site. FIRE DISTRICT-. PINEY GREEN ISO RATING: 5 NOTES: Exposed y zs, PRELINARY MAP OF WETLANDS SURVEY NC WAM = Riverine Swamp Forest �\ \ 8 f �r. PEARSON FAMILY CEMETERY FOR a\ MB 40, P 84, SL K-790 ONSLOW SANDS, I\Co ��' Proposed \\ Monitoring _ MIDWAY PARK TOWNSHIP - ONSLOW COUNTY - NORTH CAROLINA �R - - Well #5 = y �- y Propose�h SCALE: 1 " = 60' FEBRUARY, 2010 �'� /-4770 ►Monitoring 1. THE ELEVATIONS SHOWN HEREON ARE ASSUMED ELEVATIONS AND ARE NOT RELATIVE TO NCVD 1929 OR NAVD 1988 VERTICAL DATUM. 2. ACTUAL LOCATION OF ROCKY RUN BRANCH WAS NOT DETERMINED AT THE TIME OF THIS SURVEY DUE TO HIGH WATER. 3. HOURS OF OPERATION: 6 AM to 6 PM, MONDAY THRU SATURDAY. ALTERNATE HOURS OF OPERATION ARE 6 AM TO 6 AM, MONDAY THRU SUNDAY DEPENDING ON THE SCHEDULE OF ONGOING PROJECT. 4. PROPOSED TRIPS PER DAY: 8. THIS IS AN ESTIMATED AVERAGE NUMBER OF TRIPS PER DAY INTO THE MINE. THE ACTUAL NUMBER OF TRIPS WILL DEPEND ON THE ONGOING PROJECT AND THE AMOUNT OF SAND REQUIRED TO SATISFY THE JOB. 5. TRUCKS EXITING THE MINE WILL BE GOING TO PINEY GREEN ROAD VIA A TRAFFIC LIGHT INTERSECTION. 6. AN OFFICE TRAILER MAY BE ONSITE. ALL BUILDING PERMITS WILL BE OBATINED BY ONSLOW SANDS INC. LOCTAION UNDETERMINED. 7. THERE WILL BE NO ELECTRICITY USED FOR THE MINING OPERATION. THE OFFICE TRAILER WILL HAVE IT'S OWN SOURCE OF POWER. 8. A MAXIMUM OF FOUR (4) DUMP TRUCKS AT A TIME IS ANTICIPATED ON THE 6.53 AC +/. LOCATIONS WILL VARY AS THE MINE EXPANDS. 9. THE PEARSON CEMETARY WILL BE ACCESSIBLE VIA STATE AND LOCAL LAWS AND ORDINANCES. 10. ALL EMERGENCY VEHICLES WILL ACCESS THE MINE SITE VIA THE CEMETERY ACCESS ROAD THAT EXTENDS FROM BELLMONT AVENUE INTO THE MINE SITE. 1 1. A PORT-A-JOHN WILL BE PLACED ONSITE. LOCATION WILL VARY AS MINING PROGRESSES. 12. NORMAL NOISES WILL INCLUDED: FRONT-END LOADER, DUMP TRUCKS AND EXCAVATORS. NOISE IMPACTS WILL BE MINIMAL AS THE VEHICLES WILL BE INSIDE THE MINE PIT AND THE SCREENING BUFFERS WILL BE IN PLACE. 13. ALL INTERNAL VEHICLE TRAFFIC WILL BE CONTAINED WITHIN THE MINE PIT. DUMP TRUCKS WILL UTILIZE A HAUL ROAD TO GET TO THE AREA OF EXCAVATION. AT THAT POINT THE DUMP TRUCK WILL USE AN EARTHEN RAMP TO ENTER INTO THE PIT. THE DUMP TRUCK WILL BE FILLED WITH SAND AND WILL EXIT THE PIT AT A DETERMINED POINT OF EXIT. 14. ROAD IMPROVEMENTS ALONG BELLMONT AVENUE WILL INCLUDE FILLING IN ALL POTHOLES, RE -GRADING, ASPHALT TAILINGS AT THE ENTRANCE AND REGULAR MAINTENANCE. 15. SILT FENCING WILL BE PLACED AROUND ALL VEGETATIVE BUFFERS LOCATED NEXT TO THE MINE PIT AREA. 16. ANY STOCKPILES WILL REMAIN WITHIN THE ACTIVE MINE AREA. 1. Drains to Rocky Run, then to Northeast Cape Fear River. Class C 2. Proposed site is not located in a Flood Zone. 3. Private Pit, to be permitted by NC DENR, Division of Land Resources. 4. There are no wetlands within 50' of the area to be mined. 5. All stockpiles will be within mine boundary, locations will change as mine expands. No stockpiles will be within 350.0' of the property lines. Most of the stockpiles will be in the active pit area. Trucks will drive down to the pit for loading. 6. There are no areas of Environmental Concern on the property. 7. The project/boudary limit of disturbance line shall be marked on the ground with posts eight feet (8') long and protruding five feet (5') above ground level with a diameter no less than 3.5 Inches at all corners and turns. Additional boundary markers shall be placed in the project boundary line and spaced every 300 ft. 8. The project site will be graded so that all surface runoff drains into mine pit, the existing ditches and/or the level spreadrs in place. i 11 _ i "1, `l' 1 Well #6 "A" / / Riverine Swamp Forest / y 4,1 1 0 24" corrugated plastic pipe (Outfall) Invert of pipe shall be 3' below existing ground surface -� Proposedo l l j i �Li J 1 % lh ��<v 0 / Mcnitoring / i ,� Discharge S �� Q Q Well #3 Pipe #3 S° O N� �, �Gj rye, �, , y J✓ J y g o y �= Z o y y y \ Z 5 ACRE HOLDING POND G �_A O MILDRED TWYMAN, ET. ALS. y DB 701, P 129 Q Q I \ Discharge �� \ ZOO O � G I, Pipe #2 1 i y O y . o zz- -o S n Qe O // y \ Dischargl y °� . _:_ V, 03 Pipe #1 / / , OProposed � G � Riverine Swamp Forest J _y / Monitoring Zing 0 # -- I Riverine Swamp Forest / A0/44, h Proposed-- / Monitoring / Well #4 0 Q c1V 41 20'�VEGLTAT % SAND MINE PIT - 1_ BUFF�R /4' WEYERHAEUSER REAL ESTATE DEVELOPMENT COMPANY _ B„ DB 1 P 9121E REFERENCED MB Proposed -- 4Z, O Mon Well i # 1 ng - 1 nti°c MONTA DEWAYNE MURPHY DB 2729, P 87041 MB 51, P 163, SL L-1499 i J i - =- 0 Jam° , - A --_ z 50' CONSTRUCTION ENTRANCE DO NOT MINE VERTICZYUPTO THE ROAD. L _ - - 1 m 11 �t - _ t ► , 1 In F �X-x x-x=X--x 3En .L X--X�.�)F-�-=u �?L y - ,� x -� �IG� -/-I.•-y • I f; /` i J y b, ,` d ( l I l I J25' NbutralLBuffdr (App. 'A L y L y y j J L y 1�--'),.ZWing. rt. X I. Sec . y EMERGENCY VEHICLES ACCESS WIRE FENCE A 6' (MINIMUM) SCREENING FENCE WILL BE INSTALLED ALONG THE FRONT OF THE PROPERTY. LANDMARK VENTURE PARTNERS, LLC. / DB 1726, P 324 / / - R/W LANDMARK VENTURE PARTNERS, LLC. DB 1726, P 324 FORMER BORROW PIT �/ PEARSON DRIVE R/w LANDMARK VENTURE PARTNERS, LLC. DB 1726, P 324 00 \ \ A� Figures Project. - - Title: VICINITY MAP (N.T.S) Total Site Area Total Wetlands Cemeta ry Total Project Area Total Drainage Area = 17.11 Ac +/- - 6.79 Ac +/- - 0.13 Ac =10.19Ac = 10.19 Ac +/ Category Acres Tailings 0.0 Sediment Ponds 0.50 Stock Piles 0.50 Wastepiles 0.0 Processing/Haul Area Roads 0.02 Mine Excavation 6.53 Other (Disturbed 2.64 Area & Buffers) Total: 110.19 � 0 30' 60' 120' 1 Onslow Sands, Inc Mining Pit Site Plan \ Revised: 6/24/10 Date: 3/2/10 Scale: 1" = 60' Drawn bv: AMR Montwiling WW Wad C 7711077711 2"(au 4� P'VIC Sl tied�4 00 Screen LEGEND ckh9 00P irked by 6'-7' 9 ' y WETLANDS BOUNDARY = ------ WETLANDS PROPERTY BOUNDARY = _ OUTLET SPREADER = LIMITS OF EXCAVATION - SILT FENCE _ CONSTRUCTION ENTRANCE _ 50' UNDISTURBED BUFFER = 4y41 'JI, 41 PIPE OR HOSE FOR DEWATERING = 25' NATURAL BUFFER = EROSION CONTROL MATTING WALToNENGINEERING PO Box 895, Burgaw, NC 28425 (910) 259-4800 Project #: K T-� !� �•1� { _! (i Ij. i�'I �' � �'. •,�:••!', � ;� , 7... r i� � i i�: � � � ��- �•ri ! �!' y _!_��t �i i THIS PLAT ACCURATELY DEPICTS THE JURISDICTION OF SECTION 404 OF THE CLEAN WATER. WETLAND CLASSIFICATIONS: ACT PURSUANT TO THE 1 987 CORPS OF ENGINEERS WETLAND DELINEATION MAUNAL AS WEYERHAEUSER REAL ESTATE DETERMINED BY DAVID BAILEY OF THE U.S. ARMY CORPS OF ENGGNEERS AND CER11FILD ON NWI: PF01/4 = Palustrine ��` DEVELOPMENT COMPANY Forested Broad-leaved DB 3104, P 214 A SEPARATE PLAN PREPARED BY (F. WADE DAVENPORT, PL)S , N.C.R.L.S Deciduous; Needle -leaved MB 57, P 91-E Evergreen; Intermittently Exposed �\ BUFFER SPECIFICATIONS: PER ZONING ORDINANCE ONSLOW COUNTY, APPENDICE A ZONING, ARTICLE XVI, SECTIONS 1603.1.3 and 1603.5 pertain to this site. FIRE DISTRICT: PINEY GREEN ISO RATING. 5 NOTES: 1. THE ELEVATIONS SHOWN HEREON ARE ASSUMED ELEVATIONS AND ARE NOT RELATIVE TO NCVD 1929 OR NAVD 1988 VERTICAL DATUM. 2. ACTUAL LOCATION OF ROCKY RUN BRANCH WAS NOT DETERMINED AT THE TIME OF THIS SURVEY DUE TO HIGH WATER. 3. HOURS OF OPERATION: 6 AM to 6 PM, MONDAY THRU SATURDAY. ALTERNATE HOURS OF OPERATION ARE 6 AM TO 6 AM, MONDAY THRU SUNDAY DEPENDING ON THE SCHEDULE OF ONGOING PROJECT. 4. PROPOSED TRIPS PER DAY: 8. THIS IS AN ESTMATED AVERAGE NUMBER OF TRIPS PER DAY INTO THE MINE. THE ACTUAL NUMBER OF TRIPS WILL DEPEND ON THE ONGOING PROJECT AND THE AMOUNT OF SAND REQUIRED TO SATISFY THE JOB. 5. TRUCKS EXITING THE MINE WILL BE GOING 10 PINEY GREEN ROAD VIA A TRAFFIC LIGHT INTERSECTION. 6. AN OFFICE TRAILER MAY BE ONSITE. ALL BUILDING PERMITS WILL BE OBATINED BY ONSLOW SANDS INC. LOCTAION UNDETERMINED. 7. THERE WILL BE NO ELECTRICITY USED FOR THE MINING OPERATION. THE OFFICE TRAILER WILL HAVE IT'S OWN SOURCE OF POWER. 8. A MAXIMUM OF FOUR (4) DUMP TRUCKS AT A TIME IS ANTICIPATED ON THE 6.53 AC +/-. LOCATIONS WILL VARY AS THE MINE EXPANDS. 9. THE PEARSON CEMETARY WILL BE ACCESSIBLE VIA STATE AND LOCAL LAWS AND ORDINANCES. 10. ALL EMERGENCY VEHICLES WILL ACCESS THE MINE SITE VIA THE CEMETERY ACCESS ROAD THAT EXTENDS FROM BELLMONT AVENUE INTO THE MINE SITE. 1 1. A PORT-A-JOHN WILL BE PLACED ONSITE. LOCATION WILL VARY AS MINING PROGRESSES. 12. NORMAL NOISES WILL INCLUDED FRONT-END LOADER, DUMP TRUCKS AND EXCAVATORS. NOISE IMPACTS WILL BE MINIMAL AS THE VEHICLES WILL BE INSIDE THE MINE PIT AND THE SCREENING BUFFERS WILL BE IN PLACE. 13. ALL INTERNAL VEHICLE TRAFFIC WILL BE CONTAINED WITHIN THE MINE PIT. DUMP TRUCKS WILL UTILIZE A HAUL ROAD TO GET TO THE AREA OF EXCAVATION. AT THAT POINT THE DUMP TRUCK WILL USE AN EARTHEN RAMP TO ENTER INTO THE PIT. THE DUMP TRUCK WILL BE FILLED WITH SAND AND WILL EXIT THE PIT AT A DETERMINED POINT OF EXIT. 14. ROAD IMPROVEMENTS ALONG BELLMONT AVENUE WILL INCLUDE FILLING IN ALL POTHOLES, RE -GRADING, ASPHALT TAILINGS AT THE ENTRANCE AND REGULAR MAINTENANCE. 15. SILT FENCING WILL BE PLACED AROUND ALL VEGETATIVE BUFFERS LOCATED NEXT TO THE MINE PIT AREA. Survey References: MB 29, PG 091 MB 50, PG 215 MB G0, PG 084 PRELINARY MAP OF WETLANDS SURVEY NC WAM = Riverine Swamp \ �'=2s"NOU �'- r- Forest \ �(�� \ --- PEARSON FAMILY CEMETERY FOR MB 40, P 84, SL K -790 C N S LOW SANDS C 9 � Proposed \\ Monitoring MIDWAY PARK TOWNSHIP - ONSLOW COUNTY - NORTH CAROLINA m� _ - Well #5 - - -� -4 Proo_ SCALE: 1" = 60' FEBRUARY, 2010 '� �� O ,�� y y I�wel�Pt#o6r g - "A" _� Riverine Swamp Forest // 1 ' lo, y 1 \O 16. ANY STOCKPILES WILL REMAIN WITHIN THE ACTIVE MINE AREA 1. Drains to Rocky Run, then to Northeast Cape Fear River. Class C 2. Proposed site is not located in a Flood Zone. 3. Private Pit, to be permitted by NC DENR, Division of Land Resources. 4. There are no wetlands within 50' of the area to be mined. 5. All stockpiles will be within mine boundary, locations will change as mine expands. No stockpiles will be within 350.0' of the property lines. Most of the stockpiles will be in the active pit area. Trucks will drive down to the pit for loading. 6. There are no areas of Environmental Concern on the property. 7. The project/boudary limit of disturbance line shall be marked on the ground with posts eight feet (8') long and protruding five feet (5') above ground level with a diameter no less than 3.5 inches at all corners and turns. Additional boundary markers shall be placed in the project boundary line and spaced every 300 ft. 8. The project site will be graded so that all surface runoff drains into mine pit, the existing ditches and/or the level spreadrs in place. D13 2025/703 N DB 2660/159 DB 392/5, 111 24" corrugated plastic pipe (Outfall) Invert of pipe shall be 3' below existing ground surface Proposed r ( J / 4, { �G O= Monitoring \N Discharge Well #3 J y I y �� Pipe #3 ` Soh� \ G -- .5 ACRE HOLDING POND y S �-A O Q i 4 - J NEE�Q �� J� - J y l J `♦ 0 ��; MILDRED TWYMAN, ET. ALS.Discary_ C G DB 701, P 129 C �� / \ Pipeh# 9e 1 \ n -�300 0, / 1 / Q O / y Q y� y 0j -o -z' S0-\ Q P / Dischargl)e -- y Pipe #1�U A oProposed `g G Riverine Swamp Forest y / Monitoring Well # 2 _ r� _ �� Ai 0 �i 4- 61, CD Riverine Swamp Forest ry� / Proposed Monitoring / Well #4 SAND MINE PIT / y y , 20' VEGf♦'1 VL/ By �R �" +,EYERHAEUSER REAL ESTATE �� j y / qS Propos41 ed / DEVELOPMENT COMPANY 4y y ? REFERENCE "g" DB 3104, P 214 /O Proposed Monitorin Well MB 57, P 91-E Monitoring �� oa Well #1 I - / y -- x x-- x- x-x--x-= t EMERGENCY VEHICLES ACCESS LANDMARK VENTURE PARTNERS, LLC. / DB 1726, P 324 MONTA DEWAYNE MURPHY DB 2729, P 870 MB 51, P 163, SL I_-1 499 _ 1 N D )NSTRUCTION ENTRANCE \ ( / - - J� / C: m =ar�ryKr�'" �-rrr�'(�f'�"- -tic. -'cam-=• "- '"- " � � �- W � -�--- / / �-� I � � � rTTILL ' / /'• J lY L J J 25' NbutraFLBuff4r (Apt 'A' L J 1 1 nin rt. X I, Secl � y L LX_X X-11Jr �g g,t � - WIRE FENCE A 6' (MNIMUM) SCREENING FENCE WILL BE INSTALLED ALONG THE FRONT OF THE PROPERTY. RZW LANDMARK VENTURE PARTNERS, LLC. D8 1726, P 324 R W PEARSON DRIVE C/ / \ \ \ \cs \ 0 30' 60' 120' r FORMER BORROW PIT LANDMARK VENTURE PARTNERS, LLC. DB 1726, P 324 -_ - - - Figure - -Project; - - Onslow Sands, Inc Revised: 6/24/10 Date: 3/2/10 Scale: ill =60' Title: ?CT 08 20?0 D c) z F, C) VICINITY MAP (N.T.S) Total Site Area Total Wetlands Cemetary Total Project Area Total Drainage Area 17.11 Ac -- 6.79 Ac +/ = 0.13 Ac +/- = 10.19 Ac +/- = 10.19 Ac +/- Category Acres Tailings 0.0 Sediment Ponds 0.50 Stock Piles 0.50 Wastepiles 0.0 Processing/Haul Area Roads 0.02 Mine Excavation 6.53 Other (Disturbed 2.64 Area & Buffers) )\\D Mining Pit Site Plan Drawn bv: Total: 110.19 Lbli bm" Nish Deboil VIId OT 0 �_ 0"" PaCk Sch(4Q P�C�Sbtiad/41NetT Screen LEGEND WETLANDS BOUNDARY = WETLANDS PROPERTY BOUNDARY OUTLET SPREADER = LIMITS OF EXCAVATION SILT FENCE _ CONSTRUCTION ENTRANCE r Who OP 1. J Ali WON wM be InatcOW by 6--71 hand a or ietfina L-AA r 2- 3.5' -K 50' UNDISTURBED BUFFER = PIPE OR HOSE FOR DEWATERING 25' NATURAL BUFFER = EROSION CONTROL MATTING = WALTONENGINEERING PO Box 895, Burgaw, NC 28425 (910) 259-4800 Project #: r J�,.,'I + !,�i )i � t i sti irr ,• ` r i �.i I' } .r + n� r r' ``, J t' r I ic�1"r� � ,r�'i G r' �' �•i. ! r .........L' -. -. _W -} THIS PLAT ACCURATELY DEPICTS THE JURISDICTION OF SECTION 404 OF THE CLEAN WATER Survey References: WETLAND CLASSIFICATIONS: ACT PURSUANT TO THE 1987 CORPS OF ENGINEERS WETLAND DELINEATION MAUNAL AS WEYERHAEUSER REAL ESTATE MB ' D, PG 091 DETERMINED BY DAVID BAILEY OF THE U.S. ARMY CORPS OF ENGGNEERS AND CERTIFIED ON NWI: PF01/4 = Palustrine ��\ DEVELOPMENT COMPANY MB PG 215 Forested Broad-leaved \ DB 3104, P 214 A SEPARATE PLAN PREPARED BY F. WADE DAVENPORT, PLS), N.C.R.L.S Deciduous; Needle -leaved ` MB 57, P 91-E MB 4), PG 084 ( Evergreen; Intermittently \` Exposed �\ PRELINARY MAP OF WETLANDS SURUCY NC WAM = Riverine Swamp Forest �\ �� B{�FF �\ PEARSON FAMILY CEMETERY BUFFER SPECIFICATIONS: PER ZONING FOR ORDINANCE ONSLOW COUNTY, APPENDICE A -- \ \ _ MB 40, P 84, sL K -790 ZONING, ARTICLE XVI, SECTIONS 1603.1.3 and 1603.5 pertain to this site. ONSLOW SANDS, o � N Proposed \\ �� / Monitoring MIDWAY PARK TOWNSHIP - ONSLOW COUNTY - NORTH CAROLINA we #5 =- /�� y Pra ase - FIRE DISTRICT. PINEY CREEN SCALE: 1 " = 60' FEBRUARY, 2010 O 1 P � / `i' y Monitorin ISO RATING- 5 NOTES: 1. THE ELEVATIONS SHOWN HEREON ARE ASSUMED ELEVATIONS AND ARE NOT RELATIVE TO NCVD 1929 OR NAVD 1988 VERTICAL DATUM. 2. ACTUAL LOCATION OF ROCKY RUN BRANCH WAS NOT DETERMINED AT THE TIME OF THIS SURVEY DUE TO HIGH WATER. 3. HOURS OF OPERATION: 6 AM to 6 PM, MONDAY THRU SATURDAY. ALTERNATE HOURS OF OPERATION ARE 6 AM TO 6 AM, MONDAY THRU SUNDAY DEPENDING ON THE SCHEDULE OF ONGOING PROJECT. 4. PROPOSED TRIPS PER DAY: 8. THIS IS AN ESTMATED AVERAGE NUMBER OF TRIPS PER DAY INTO THE MINE. THE ACTUAL NUMBER OF TRIPS WILL DEPEND ON THE ONGOING PROJECT AND THE AMOUNT OF SAND REQUIRED TO SATISFY THE JOB. 5. TRUCKS EXITING THE MINE WILL BE GOING TO PINEY GREEN ROAD VIA A TRAFFIC LIGHT INTERSECTION. 6. AN OFFICE TRAILER MAY BE ONSITE. ALL BUILDING PERMITS WILL BE OBATINED BY ONSLOW SANDS INC. LOCTTION UNDETERMINED. 7. THERE WILL BE NO ELECTRICITY USED FOR THE MINING OPERATION. THE OFFICE TRAILER WILL HAVE IT'S OWN SOURCE OF POWER. 8. A MAXIMUM OF FOUR (4) DUMP TRUCKS AT A TIME IS ANTICIPATED ON THE 6.53 AC +/-. LOCATIONS WILL VARY AS THE MINE EXPANDS. 9. THE PEARSON CEMETARY WILL BE ACCESSIBLE VIA STATE AND LOCAL LAWS AND ORDINANCES. 10. ALL EMERGENCY VEHICLES WILL ACCESS THE MINE SITE VIA THE CEMETERY ACCESS ROAD THAT EXTENDS FROM BEEEMONT AVENUE INTO THE MINE SITE. 1 1. A PORT A-JOHN WILL BE PLACED ONSITE. LOCATION WILL VARY AS MINING PROGRESSES. 12. NORMAL NOISES WILL INCLUDED: FRONT-END LOADER, DUMP TRUCKS AND EXCAVATORS. NOISE IMPACTS WILL BE MINIMAL AS THE VEHICLES WILL BE INSIDE THE MINE PIT AND THE SCREENING BUFFERS WILL BE IN PLACE. 13. ALL INTERNAL VEHICLE TRAFFIC WILL BE CONTAINED WITHIN THE MINE PIT. DUMP TRUCKS WILL UTILIZE A HAUL ROAD 1-0 GET TO THE AREA OF EXCAVATION. AT THAT POINT THE DUMP TRUCK WILL USE AN EARTHEN RAMP TO ENTER INTO THE PIT. THE DUMP TRUCK WILL BE FILLED WITH SAND AND WILL EXIT THE PIT AT A DETERMINED POINT OF EXIT. 14. ROAD IMPROVEMENTS ALONG BELLMONT AVENUE WILL INCLUDE FILLING IN ALL POTHOLES, REGRADING, ASPHALT TAILINGS AT THE ENTRANCE AND REGULAR MAINTENANCE. 15. SILT FENCING WILL BE PLACED AROUND ALL VEGETATIVE BUFFERS LOCATED NEXT TO THE MINE PIT AREA. 16. ANY STOCKPILES WILL REMAIN WITHIN THE ACTIVE MINE AREA 1. Drains to Rocky Run, then to Northeast Cape Fear River. Class C 2. Proposed site is not located in a Flood Zone. 3. Private Pit, to be permitted by NC DENR, Division of Land Resources. 4. There are no wetlands within 50' of the area to be mined. 5. All stockpiles will be within mine boundary, locations will change as mine expands. No stockpiles will be within 350.0' of the property lines. Most of the stockpiles will be in the active pit area. Trucks will drive down to the pit for loading. 6. There are no areas of Environmental Concern on the property. 7. The project/boudary limit of disturbance line shall be marked on the ground with posts eight feet (8') long and protruding five feet (5') above ground level with a diameter no less than 3.5 inches at all corners and turns. Additional boundary markers shall be placed in the project boundary line and spaced every 300 ft. 8. The project site will be graded so that all surface runoff drains into mine pit, the existing ditches and/or the level spreadrs in place. MONTA DEWAYNE MURPHY DB 2729, P 870 MB 51, P 163, SL L-1499 ''A / z� Riverine Swamp Forest / y`Well 0-- / t BUYER J "&A DB 2025/703 I v DB 2660/159 DB 392/533 24" corrugated plastic pipe (Outfall) Invert of pipe shall be 3' below existing ground surface Proposed / Monitoring / l ��. �� Discharge \ ? �0' 1� y S Well #3 y / I J/- Pipe #3 S \ O - 2 7 0), L Q�QC\ 5 ACRE HOLDING POND `� 7G �G�� 0 ,,- MILDRED TWYMAN, ET. ALS. 0_ q-J � �� J y � \ n DB 701. P 129 �� 'j ?� ! � I! ` Pipeh#2 e y 1 \ - 7i C-)/ / AI 1 -)3 - 3 zS n Discharge Pipe #19 19lo,O 1 Proposed C_ / Riverine Swamp Forest / l � �,1,/ ' � �' / Monitoring Well #2 /4 Riverine Swamp Forest h Proposed ry / Monitoring / -- Well #4 y GLtiIAT / SAND MINE PIT 20' VE BUFFR �I NEYERHAEUSER REAL ESTATE j/ // Proposed / DEVELOPMENT COMPANY REFERENCE B DB 3104, P 214 Proposed = Monitorin Well MB 57, P 91-E Monitoring Well #1 I \ .I 4 y - A I - � y - - I 41 / 50' CONSTRUCTION ENTRANCE ( D _. i L __ ..__ ....._ ..___._../... _ _.._ _ .� ems, y � - " I r- \ \ y„ x x �---x- x=x -x x-- J EMERGENCY VEHICLES ACCESS LANDMARK VENTURE PARTNERS, LLC. ` DB 1726, P 324 ra 125' N6utra1,l-Buffdr (App, 'A " y y 1 T- I- -�)IpZ%ning,trt. XTI, Secl. X T n "i1�ii-""W Tc WIRE FENCE A 6' (MINIMUM) SCREENING FENCE WILL BE INSTALLED ALONG THE FRONT OF THE PROPERTY. VICINITY MAP (N.T. Total Site Area Total Wetlands Cemetary Total Project Area Total Drainage Area 17.11 Ac + /_ 6.79 Ac +/ = 0.13 Ac +/- 10.19 Ac +/ 10.19 Ac +/ Category Acres Tailings 0.0 Sediment Ponds 0.50 Stock Piles 0.50 Wastepiles 0.0 Processing/Haul Area Roads 0.02 Mine Excavation 6.53 Other (Disturbed 2.64 Area & Buffers) Total: 10.19 R/W LANDMARK VENTURE PARTNEFS, LLC. DB 1726, P 324 PEARSON DRIVE- R /w FORMER BORROW PIT LANDMARK VENTURE PARTNERS, LLC. DB 1726, P 324 - - -Fig ure- _Project: Onslow Sands, Inc Revised: 6/24/10 Date: 3/2/10 Scale: ill =60' Title: 16 9 c_1 OCT 0 8 2010 Mining Pit Site plan Drawn bv: Mwilawing weft Dow r �A Waller Ex 4Yound '7be 1' MI Gravel Pads Well , irm"ed by as'-71 III auger or;etfing S ' 4� P'VC Sldisd�411elf Screen LEGEND 1211M. r IN.- 3.5' WETLANDS BOUNDARY = - - - - - - WETEANDS PROPERTY BOUNDARY OUTLET SPREADER = LIMITS OF EXCAVATION -��1- SILT FENCE _ CONSTRUCTION ENTRANCE _ 50' UNDISTURBED BUFFEP. PIPE OR HOSE FOR DEWATERING = 25' NATURAL BUFFER = EROSION CONTROL MATTING WALToNENGINEERING PO Box 895. Burgaw, NC 28425 (910) 259-4800 Project #: .. - -. 1 , ....... ..1 :.... .......... .. ... .... ...::f. .. ... ... ..... .:J::.: .1..,y' a7..A. ;d1. Y•,;Lt. ... .. Mi: ': .,•.,:.;:::j,:1 � 11 :11 � �'1� 4'ii•7 •. A}i1'�u .�. ( .4!•. •ia•1•'..41-- 2 1}*}�I J4A 7j �1 ,4 I,IY � Y��, 7'f 1.ikJ. t�i. '}rl � 1' e- Y.•},�M;S' a, i is .. .: 1 ., .. ... .. a .-. _- .>''r :•.r:l ,? ...._ .. .. ,. •? :�. ..• THIS PLAT ACCURATELY DEPICTS THE JURISDICTION OF SECTION 404 OF THE CLEAN WATER ACT PURSUANT TO THE 1987 CORPS OF ENGINEERS WETLAND DELINEATION MAUNAL AS DETERMINED BY DAVID BAILEY OF THE U.S. ARMY CORPS OF ENGGNEERS AND CERTIFIED ON A SEPARATE PLAN PREPARED BY (F. WADE DAVENPORT, PLS), N.C.R.L.S PREDNARY MAP OF WETLANDS SURVEY BUFFER SPECIFICATIONS- PER ZONING FOR ORDINANCE ONSLOW COUNTY, APPENDICE A ZONING, ARTICLE XVI, SECTIONS 1 603.1 .3 and ONSLOW SANDS, �o 1603.5 pertain to this site. FIRE DIS l RIC1 : PINEY GREEN MIDWAY PARK TOWNSHIP - ONSLOW COUNTY - NORTH CAROLINA SCALE: I'' = 60' EEBRUARY, 2010 ISO RATING: 5 NOTES: 1. THE ELEVATIONS SHOWN HEREON ARE ASSUMED ELEVATIONS AND ARE NOT RELATIVE TO NCVD 1929 OR NAVD 1988 VERTICAL DATUM. 2. ACTUAL LOCATION OF ROCKY RUN BRANCH WAS NOT DETERMINED AT THE TIME OF THIS SURVEY DUE TO HIGH WATER. 3. HOURS OF OPERATION: 6 AM to 6 PM, MONDAY THRU SATURDAY. ALTERNATE HOURS OF OPERATION ARE 6 AM TO 6 AM, MONDAY THRU SUNDAY DEPENDING ON THE SCHEDULE OF ONGOING PROJECT. 4. PROPOSED TRIPS PER DAY: 8. THIS IS AN ESTIMATED AVERAGE NUMBER OF TRIPS PER DAY INTO THE MINE. THE ACTUAL NUMBER OF TRIPS WILL DEPEND ON THE ONGOING PROJECT AND THE AMOUNT OF SAND REQUIRED TO SATISFY THE JOB. C' . TRUCKS EXITING THE MINE WILL BE GOING TO PINEY GREEN ROAD VIA A IC LIGHT INTERSECTION. 6. AN OFFICE TRAILER MAY BE ONSITE. ALL BUILDING PERMITS WILL BE OBATINED BY ONSLOW SANDS INC. LOCTAION UNDETERMINED. 7. THERE WILL BE NO ELECTRICITY USED FOR THE MINING OPERATION. THE OFFICE TRAILER WILL HAVE IT'S OWN SOURCE OF POWER. 8. A MAXIMUM OF (FOUR (4) DUMP TRUCKS AT A TIME IS ANTICIPATED ON THE 6.53 AC +/-. LOCATIONS WILL VARY AS THE MINE EXPANDS. , 9. THE PEARSON CEMETARY WILL BE ACCESSIBLE VIA STATE AND LOCAL LAWS AND ORDINANCES. 10. ALL EMERGENCY VEHICLES WILL ACCESS THE MINE SITE VIA THE CEMETERY ACCESS ROAD THAT EXTENDS FROM BELLMONT AVENUE INTO THE MINE SITE. 11. A PORT-A-JOHN WILL BE PLACED ONSITE. LOCATION WILL VARY AS MINING PROGRESSES. 12. NORMAL NOISES WILL INCLUDED- FRONT-END LOADER, DUMP TRUCKS AND EXCAVATORS. NOISE IMPACTS WILL BE MINIMAL AS THE VEHICLES WILL BE INSIDE THE MINE PIT AND THE SCREENING BUFFERS WILL BE IN PLACE. 13. ALL INTERNAL VEHICLE TRAFFIC WILL BE CONTAINED WITHIN THE MINE PIT. DUMP TRUCKS WILL UTILIZE A HAUL ROAD TO GET TO THE AREA OF EXCAVATION. AT THAT POINT THE DUMP TRUCK WILL USE AN EARTHEN RAMP TO ENTER INTO THE PIT. THE DUMP TRUCK WILL BE FILLED WITH SAND AND WILL EXIT HE PIT AT A DETERMINED POINT OF EXIT. 14. ROAD IMPROVEMENTS ALONG BELLMONT AVENUE WILL INCLUDE FILLING IN ALL POTHOLES, RE -GRADING, ASPHALT TAILINGS AT THE ENTRANCE AND REGULAR MAINTENANCE. 15. SILT FENCING WILL BE PLACED AROUND ALL VEGETATIVE BUFFERS LOCATED NEXT TO THE MINE PIT AREA. 16. ANY STOCKPILES WILL REMAIN WITHIN THE ACTIVE MINE AREA. MONTA DEWAYNE MURPHY DB 2729, P 870 MB 51, P 163, SL L-1499 1. Drains to Rocky Run, then to Northeast Cape Fear River. Class C 2. Proposed site is not located in a Flood Zone. 3. Private Pit, to be permitted by NC DENR, Division of Land Resources. 4_ There are no wetlands within 50' of the area to be mined. 5. All stockpiles will be within mine boundary, locations will change as mine expands. No stockpiles will be within 350.0' of the property links. Most of the stockpiles will be in the active I pit'; area. Trucks will drive down to the pit for loading. 6. There are no. areas of Environmental Concern on the property. 7. The project/boudary limit of disturbance line shall be marked on the ground with posts eight feet (8') long and protruding five feet (5') above ground level with a diameter no less than 3.5 inches at all corners and turns. Additional boundary markers shall be placed in the project boundary line and spaced every 300 ft. 8. The project site will be graded so that all surface runoff drains into mine pit, the existing ditches and/or the level spreadrs in place. WETLAND CLASSIFICATIONS: NWI: PF01 /4 = Polustrine Forested Broad-leaved Deciduous; Needle -leaved Evergreen; Intermittently Exposed NC WAM = Riverine Swamp Forest �A-_::/ N / F CJ MILDRED TWYMAN, ET. ALS. DB /01 , P 129 Rive ine w p F res - y J EMERGENCY VEHICLES ACCESS LANDt�AARK VENTURE PARTNERS, LLC. / �` DB 1726, P 324 �� / PEARSON DRIVE R/W XS ,\ \0 30' 60' 120' r Proposed onl on Well #3 / WEYERHAEUSER REAL ESTATE DEVELOPMENT COMPANY �\ DB3104,P214 MB 57, P 91 -E Af I Survey References: MB 29, PC 091 MB 50, PC 215 MB 40, PC 084 B PEARSON FAMILY CEMETERY M 40. P 84. SL K-790 DB 2025/703 I N DB 2660/159 DB 392/533 24" corrugated plastic pipe (Outfall) Invert of pipe shall be 3' below existing ground surface o ' 01 cr 2 � �G �J G�7-o 0 �t- 2s0b TG �G 0 0 Z y -)3 �"os roposed onitoring �fl ell #2 C) 8 c amp Forest T Cr=YFRHAFUSFR RFAI FSTATF Pro as d DEVELOPMENT COMPANY REFER CE B DB'31O�, P 21/1 Monitor ng Weli MB 57, P 91 -E A 6' (MINIMUM) SCREENING FENCE WILL BE INSTALLED ALONG THE FRONT OF THE ;PROPERTY. LANDMARK VENTURE PARTNER-. LLC DB 1726, P 324 FORMER BORROW PIT LANDMARK VENTURE PARTNERS, LLC. DB 1726, P 324 - Figure - Project: - - - - 1 Onslow Sands, Inc Revised: 6/24/10 Date: 3/2/10 Scale: D z VICINITY MAP (N.T,S) Total Site Area Total Wetlands Cemetary Total Project Area Total Drainage Area = 17.11 Ac +/- = 6.79 Ac +/_ = 0.13 Ac +/ = 10.19 Ac +/- = 10.19 Ac +/- Category Acres Tailings 0.0 Sediment Ponds 0.50 Stock Piles 0.50 Wastepiles 0.0 Processing/Haul Area Roads 0.02 Mine Excavation 6.53 Other (Disturbed 2.64 Area & Buffers) Total: 10.19 Mw4wing ftN OeW be Ol Pack ag w � l by s,_7,or a Sduperor 1-1 chC 46 P'VC SWsd/4MdT Screen y �- 3.5' t • LEG Ell D WETLANDS BOUNDARY - - - - - - - `� 4 WETLANDS \� PROPERTY BOUNDARY OUTLET SPREADER - LIMITS OF EXCAVATION- ', - SILT FENCE �' '• CONSTRUCTION ENTRANCC4= } ` 50' UNDISTURBED BUFFER PIPE OR HOSE FOR _-_. - DEWATERING = 25' NATURAL BUFFER EROSION CONTROL MATTING = Title: Mining Pit Site Plan ALTON ENGINEERING PO Box 895, Bur aw, NC 28425 910) 259-4800 Drawn by: AMR roject #: ---- - - - -__ __-7 7T.) r 1 � r P 1 '•