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HomeMy WebLinkAboutNC0088609_Permit (Issuance)_20070925NPDES DOCUHENT !;CANNING COVER SHEET NPDES Permit: NC0088609 Windgate Subdivision, Well #1 Document Type: Permit Issuance Wasteload Allocation Authorization to Construct (AtC) Permit Modification Complete File - Historical Engineering Alternatives (EAA) Correspondence Instream Assessment (67b) Speculative Limits Environmental Assessment (EA) Permit History Document Date: September 25, 2007 This document is printed on reuse paper - igrzore any content on the resrerse side en NCDENR Gary Moseley, Manager Aqua North Carolina, Inc. 4163 Sinclair Street Denver, North Carolina 28037 Dear Mr. Moseley: Michael F. Easley Govemor William G. Ross, Jr., Secretary North Carolina Department of Environment and Natural Resources Coleen H. Sullins, Director Division of Water Quality September 25, 2007 Subject: Issuance of NPDES Permit NC0088609 Windgate Subdivision — Well #1 Surry County Division personnel have reviewed and approved your application for renewal of the subject permit. Accordingly, we are forwarding the attached NPDES discharge 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 U.S. Environmental Protection Agency dated May 9, 1994 (or as subsequently amended). This final permit includes no major changes from the draft permit sent to you on June 20, 2007. If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following receipt of this letter. This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings (6714 Mail Service Center, Raleigh, North Carolina 27699-6714). Unless such demand is made, this decision shall be final and binding. Please note that this permit is not transferable except after notice to the Division. The Division may require modification or revocation and reissuance of the permit. This permit does not affect the legal requirements to obtain other permits which may be required by the Division of Water Quality or permits required by the Division of Land Resources, the Coastal Area Management Act or any other Federal or Local governmental permit that may be required. If you have any questions concerning this permit, please contact Sergei Chernikov at telephone number (919) 733-5083, extension 594. cc: NPDES Files Winston-Salem Regional Office / Surface Water Protection J. Thurman. Horne P.E. Horizon Engineering and Consutling, Inc. 2510 Walker Rd., Mt. Pleasant, N.C. 28124 N. C. Division of Water Quality / NPDES Unit 1617 Mail Service Center, Raleigh, NC 27699-1617 Internet: h2o.enr.state.nc.us Sincerely, ci/X... Coleen H. Sullins Phone: (919) 733-5083 fax: (919) 733-0719 DENR Customer Service Center: 1 800 623-7748 Permit No. NC0088609 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY PERMIT TO DISCHARGE WASTEWATER UNDER THE 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, Aqua North Carolina, Inc. is hereby authorized to discharge wastewater from a facility located at Windgate Woods Subdivision — Well #1 Simmons Road Dobson Surry County to receiving waters designated as an unnamed tributary to Fisher River in the Yadkin -Pee Dee River Basin in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III, and IV hereof. This permit shall become effective November 1, 2007. This permit and authorization to discharge shall expire at midnight on January 31, 2009. Signed this day September 25, 2007. 7&) J a14-t Coleen H. Sullins, Director Division of Water Quality By Authority of the Environmental Management Commission Permit No. NC0088609 SUPPLEMENT TO PERMIT COVER SHEET All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements, terms, and provisions included herein. Aqua North Carolina, Inc. is hereby authorized to: 1. Continue to operate a water treatment plant with discharge of filter backwash located at the Windgate Subdivision — Well #1, Simmons Road, Dobson, Surry County. 2. Discharge from said treatment works at the location specified on the attached map into unnamed tributary to Fisher River, a class C water in the Yadkin -Pee Dee River Basin. Y, v',j • . J/ • I a . •ram - • I•a W •J 7 * • In r :r l Y r � ` .. ``,.____.-----'.'!' • N r � 1i �Z.•' ;r �'�P• J +.... -,.40 i� its i}� , ._ \\ D Discharge - . , ,,. ,.._ ,.) , . ,, „ t, „ ,,..t: ., , .. .., _ 11i' .M1� � .:, ■ �L� J Al J• • w. • Latitude: 36° 24' 29" Aqua North Carolina, Inc. Longitude: 80° 40' 43" USGS Quad #: B 16N-V River Basin #: 03-07-02 N • Windgate Subdivision — Well #1 Water Treatment Plant SuITy County Receiving Stream UT to Fisher River stream Class: C NC0088609 Permit NC0088609 A. (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS During the period beginning upon the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored by the Permittee as specified below: Parameter Limits" ' ��' u �; r,� �x�Ionitorulg�Requlrerri_ ents ��� Ititt = Monthly,-,- Average a 5 M1t Daily, t , Maximum m'.JY .ya �' �Measurementz Frequency, .� iS3ip 3 : Sam' le , ype � 1 a+'t 'f,' �� S} ample:, `jLocation {' Flow' Monthly Instantaneous Effluent Total Suspended Solids 30.0 mg/L 45.0 mg/L 2/Month Grab Effluent Total Residual Chlorine2 17 µg/L 2/Month Grab Effluent Fluoride Monthly Grab Effluent Total Iron Monthly Grab Effluent Total Zinc Monthly Grab Effluent Total Manganese Monthly Grab Effluent pH > 6.0 and < 9.0 standard units 2/Month Grab Effluent Footnotes: 1. For instantaneous flow monitoring, the duration of the discharge must be reported in addition to the total flow. 2. Limit takes effect May 1, 2009. Until then, the permittee shall monitor TRC [with no effluent limit]. This time period is allowed in order for the facility to budget and design/construct dechlorination and /or an alternative disinfection system. The Permittee shall collect all samples from a representative discharge event. The Permittee shall discharge no floating solids or foam visible in other than trace amounts. DENR/DWQ FACT SHEET FOR NPDES PERMIT DEVELOPMENT NPDES No. NC0088528 Facility Information Applicant/Facility Name: Aqua North Carolina, Inc/ Windgate Subdivision — Well #1 Applicant Address: 4163 Sinclair Street, Denver NC, 28037 Facility Address: Simmons Road, Dobson, North Carolina Permitted Flow: N/A Type of Waste: Water Treatment/Greensand filters Other Permit(s): N/A Facility / Permit Status: Class III New County: Surry County Miscellaneous Receiving Stream: Stream Classification: UT to Fisher River C' Regional Office: USGS Topo Quad: Winston-Salem B 16NW 303(d) Listed? Subbasin: No 03-07-02 Permit Writer: Date: Sergei Chemikov May 15, 2007 Drainage Area (mi2): Summer 7Q10 (cfs) : N/A 0 Winter 7Q10 (cfs): N/A 30Q2 (cfs) : 0 Average Flow (cfs): IWC (%): N/A N/A Lat. 36° 24' 29" N Long. 80° 40' 43" W BACKGROUND: Windgate Subdivision — Well #1 is a Class II, greensand water treatment plant that provides potable water for 60 customers in the residential subdivision. There are currently 4 greensand filters, the filters are backwashed approximately once every day. The backwash rate for 4 filters is 1,680 gallons. Well #1 is approved for 85 gpm, which is sufficient to serve the subdivision. The subdivision is fully developed and there is no potential for increased flow. Effluent limitations are implemented based on the new Guidance for Greensand Water Treatment Plants. The Division has determined that the existing Water Treatment Plant is necessary to accommodate social and economic growth in the area and that it will not result in contravention of surface water quality standards or loss of designated uses in the receiving stream. PROPOSED SCHEDULE FOR PERMIT ISSUANCE: Draft Permit to Public Notice: June 20, 2007 (est.) Permit Scheduled to Issue: August 30, 2007 (est.) NPDES CONTACT: If you have questions regarding any of the above information or on the attached permit, please contact Sergei Chemikov at (919) 733-5083 ext. 594. Fact Sheet NPDES NC0088609 Page I cc: Central Files WSRO NPDES STAFF REPORT AND RECOMMENDATION APPLICATION # NC0088609 To: Point Source Branch - SWP Attention: Semi Chernikov, Ph.D. Date: June 8, 2007 County: Surry PART I - GENERAL INFORMATION c_ 1. Permittee Address: Aqua NC, Inc. Windgate Subdivision — Well #1 (Simpson Road, Dobson, NC) 4163 Sinclair Street Denver, NC 28037 2. Date of Investigation: June 6, 2007 3. Report Prepared by: Mike Mickey, Environmental Specialist 4. Persons Contacted and Telephone Number: No one present. 5. Directions to Site: Windgate Subdivision is located off Simpson Road just NE of Dobson. To access the well site you turn into the driveway at 266 Simpson Road. 6. Discharge Points(s), List for all discharge points: Latitude: 36° 24' 29" Longitude: 80° 40' 43" U.S.G.S. Quad No. B-16-NW U.S.G.S. Quad Name Dobson, NC 7. Site size and expansion area consistent with application? Aqua owns a 100 ft. circle around the well. 8. Topography: The well site is 100 yds off the road at the head of a small ravine. 9. Location of nearest dwelling: Several mobile homes are located within 300 ft of the well. 10. Receiving stream or affected surface waters: U.T. to Fisher River a. Classification: C b. River Basin and Subbasin No.: 03-07-02 c. Describe receiving stream features and pertinent downstream uses: The filter backwash is discharged approximately 50 ft down slope of the well house through a 2" pipe into the headwaters of a ravine (see attached picture) that flows through the backyards of several residents. Part II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS 1. a. Volume of Wastewater to be permitted: The system is backwashed approximately once daily with an estimated flow of 1,680 GPD. b. What is the permitted capacity of the well system? The Windgate water system is approved for 85 gpm (maximum yield) by the Public Water Supply Section and serves 60 customers. c. Actual treatment capacity of the current facility? See above. d. Date(s) of AtC's issued in the previous two years. NA. e. Please provide a description of existing or substantially constructed wastewater treatment facilities: There is no treatment. The discharge is generated when the green sand filters (4) are backwashed with potable water. f. Please provide a description of proposed wastewater treatment facilities. N/A g• Possible toxic impacts to surface waters: The following chemicals are added: Potassium Permanganate (for iron and manganese removal) and chlorine (for disinfection). h. Pretreatment Program (POTWs only): NA 2. Residuals handling and utilization/disposal scheme: None generated. PART III - OTHER PERTINENT INFORMATION 1. Is this facility being constructed with Construction Grant Funds (municipals only)? NA. 2. Special monitoring or limitations (including toxicity) requests: NA. 3. Important SOC, JOC or Compliance Schedule dates: NA. NPDES Permit Staff Report Version 10/92 Page 2 4. Alternative Analysis Evaluation: No other disposal options available for this type of operation. PART IV - EVALUATION AND RECOMMENDATIONS WSRO recommends issuance of the permit for the de minimis discharge created from backwashing of the green sand filters at Well # 1 serving the Windgate Subdivision. Report Preparer & D PAti c‘e-- t1/4//° SWP Regional Supervisor & Date NPDES Permit Staff Report Version 10/92 Page 3 Windgate Subdivision Well # 1 Well house Outfall location Windgate Subdivision, Well # 1 Outfall Copyright (C) 1998, Maptech, Inc. 1. Four (4) Potassium Permanganate Feed Tanks (One each to each green sand filter) To Windgate Subdivision Water System ==> fi Four (4) Green Sand Filters (In parallel) Chlorine Addition Well Water => Backwash Discharge to unnamed tributary to UT to Fisher River Windgate Subdivision - Well # 1 Existing Well System - Process Flow Diagram Dobson, NC Scale: NTS Horizon Engineering & Consulting, Inc. 2510 Walker Road Mt. Pleasant, N.C. 28124 May 4, 2007 NORTH CAROLINA FORSYTH COUNTY AFFIDAVIT OF PUBLICATION Before the undersigned, a Notary Public of said County and State, duly commissioned, qualified, and authorized by law to administer oaths, personally appeared D.H. Stanfield, who being duly sworn, deposes and says: that he is Controller of the Winston-Salem Journal, engaged in the publishing of a newspaper known as Winston-Salem Journal, published, issued and entered as second class mail in the City of Winston-Salem, in said County and State: that he is authorized to make this affidavit and sworn statement: that the notice or other legal advertisement, a true copy of which is attached hereto, was published in Winston-Salem Journal on the following dates: June 23, 2007 and that the said newspaper in which such notice, paper document, or legal advertisement was published was, at the time of each and every such publication, a newspaper meeting all the requirements and qualifications of Section 1-597 of the General Statutes of North Carolina and was a qualified newspaper within the meaning of Section 1-597 of the General Statutes of North Carolina. This 25th day of June, 2007 (signature of persoi aking affidavit) Sworn to and subscribed before me, this 25th day of June, 2007 My Commission expires: September 28, 2010 KIMALEY OHNSON e J NOTARY PUBLIC FORSYTH COUNTY STATE OF NORTH CAR 1.1 MY COMMISSION EXPIRES, PUBLIC NOTICE STATE OF NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION/NPDES UNIT 1617 MAIL SERVICE CENTER RALEIGH, NC 27699-1617 NOTIFICATION OF INTENT TO ISSUE A NPDES WASTEWATER PERMIT On the basis of thorough staff review and application of NC General Statute 143.21, Public law 92-500 and other lawful standards and regulations. the North Carolina Environmental Management Commission proposes to issue a National Pollutant Discharge Elimination System (NPDES) wastewater discharge permit to the person4s) listed below effective 45 days from the publish date of this notice. Written comments regarding the proposedpermit will be accepted until 30 days after the publish date of this notice. All comments received prior to that date are considered in the final determinations regarding the proposed permit. The Director of the NC Division of Water Quality may decide to hold a public meeting for the proposed permit should the Division receive a significant degree of public interest. Copies of the draft permit and other supporting information on file used to determine conditions present in the draft permit are available upon request and payment of the costs of reproduction. Mail comments and/or requests for information to the NC Division of Water Quality at the above address or call Ms. Frances Candelaria (919) 733-5083, extension 520 at the Point Source Branch. Please include the NPDES permit number (attached) in any communication. Interested persons may also visit the Division of Water Quality at 512 N. Salisbury Street, Raleigh, NC 27604-1148 between the hours of 8:00 a.m. and 5:00 p.m. to review information on file. Aqua North Carolina, Inc. (4163 Sinclair Street, Denver, NC 28037) has applied for a new NPDES permit NC0088528 for the Hillcrest Subdivision Well #3 in Surry County. This permitted facility will discharge treated filter backwash to UT to Champ Creek in the Yadkin -Pee Dee River Basin. Currently total suspended solids and total residual chlorine are water quality limited. This discharge may affect future allocations In this portion of the Yadkin -Pee Dee River Basin. Denver, NC 28037) haslnc. applied for4163 Sinclair a new NPDES permit NC0088552 for the Colonial Woods Subdivi- sion Well #2 In Surry County. This permitted facility wIII ,ram !Bull tlY ie )N A RBON Nell PW peMaeag SRO Paso. Horizon Engineering & Consulting, Inc. Ms. Susan Wilson Supervisor, Western NPDES Program Division of Water Quality NPDES Unit 1617 Mail Service Center Raleigh, N.C. 27699 - 1617 2510 Walker Road Mt. Pleasant, N.C. 28124-8567 704-788-4455 Fax: 704-788-4455 May 4, 2007 f Subject: NPDES Permit Application Existing Well Backwash Discharge Well No. 1 Aqua North Carolina, Inc. Windgate Subdivision Surry County Dear Ms. Wilson: MAY 2 1 2007 DENR - WATER QUALITY 7 r*;-0.;`ii4CH _._..- Attached are four (4) copies of the application for NPDES permit signed by Aqua North Carolina, Inc., four (4) copies of the Engineering Alternatives Analysis (EAA) and a check for $ 715 (application fee.) This application is for a permit for the continued discharge of backwash from existing green sand filters installed on a potable well which serves Windgate Subdivision, located outside Dobson, N.C. The EAA contains maps which indicate the existing location. This is an existing groundwater well that filters water through a series of green sand filters before the water is distributed to the Windgate community. The filters are "backwashed" with water approximately once every day and approximately 1,680 gallons of water is then discharged into the nearby stream. This well has been in service for a number of years and we are not aware of any environmental concerns over this discharge. We appreciate your consideration of our application for permit. If you have any questions or if there is anything we need to discuss, please call me (704-788-4455.) C: Tamara S. Taylor Robert Midgette Gary Moseley Michael Melton NPDES PERMIT APPLICATION - SHORT FORM C - WTP For discharges associated with water treatment plants Mail the complete application to: N. C. Department of Environment and Natural Resourc Division of Water Quality / NPDES Unit 1617 Mail Service Center, Raleigh, NC 27699-16171 NPDES Permit Number NCOO g g jp Q ! ECIEOVE IMAY 2 1 2007 I DENR - WATER QUALITY POINT SOURCE BRANCH If you are completing this form in computer use the TAB key or the up - down arrows to move from one field to the next. To check the boxes, click your mouse on top of the box. Otherwise, please print or type. 1. Contact Information: Owner Name Facility Name Mailing Address City State / Zip Code Telephone Number Fax Number e-mail Address Aqua North Carolina, Inc. Windgate Subdivision - Well # 1 4163 Sinclair Street Denver NC/28037 (704)489-9404 (704)489-9409 GRMoseley@aquaamerica.com 2. Location of facility producing discharge: Check here if same as above El Street Address or State Road Simmons Road City State / Zip Code County Dobson NC/27017 Surry 3. Operator Information: Name of the firm, consultant or other entity that operates the facility. Operator in Responsible Charge or ORC) Name Mailing Address City State / Zip Code Telephone Number Fax Number 4. Ownership Status: Federal ❑ Aqua North Carolina, Inc. (Note that this is not referring to the 4163 Sinclair Street Denver NC/28037 (704)489-9404 (704)489-9409 State ❑ Private Public ❑ Page 1 of 3 C-WTP 03/05 NPDES PERMIT APPLICATION - SHORT FORM C - WTP For discharges associated with water treatment plants 5. Type of treatment plant: ❑ Conventional (Includes coagulation, flocculation, and sedimentation, usually followed by filtration and disinfection) ❑ Ion Exchange (Sodium Cycle Cationic ion exchange) ® Green Sand Filter (No sodium recharge) ❑ Membrane Technology (RO, nanofiltration) Check here if the treatment process also uses a water softener 6. Description of source water(s) (i.e. groundwater, surface water) Groundwater well 7. Describe the treatment process(es) for the raw water: Green sand filtration using potassium permanganate. Chlorine added for disinfection. 8. Describe the wastewater and the treatment process(es) for wastewater generated by the facility: Wastewater discharge is the backwash of the green sand filters. Discharge rate is approximately 1,680 gallons, once every day. 9. Number of separate discharge points: 1. Outfall Identification number(s) 001 10. Frequency of discharge: Continuous ❑ Intermittent El If intermittent: Days per week discharge occurs: 3 Duration: approx. 20 min. 11. Plant design potable flowrate 0.1224 (Max. well yield) MGD Backwash or reject flow 0.00168 MGD 12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including latitude and longitude): an unnamed tributary to Fisher River (Yadkin River Basin) Page 2 of 3 C-WTP 03/05 NPDES PERMIT APPLICATION - SHORT FORM C - WTP • For discharges associated with water treatment plants 13. Please list all water treatment additives, including cleaning chemicals, that have the potential to be discharged. potassium permanganate chlorine 14. Is this facility located on Indian country? (check one) Yes ❑ No El 15. Additional Information: • Provide a schematic of flow through the facility, include flow volumes at all points in the treatment process, and point of addition of chemicals. • Solids Handling Plan 16. NEW Applicants Information needed in addition to items 1-15: • New applicants must contact the NCDENR Customer Service Center. Was the Customer Service Center contacted? ® Yes 0 No • Analyses of source water collected • Engineering Alternative Analysis • Discharges from Ion Exchange and Reverse Osmosis plants shall be evaluated using a water quality model. 17. Applicant Certification I certify that I am familiar with the information contained in the application and that to the best of my knowledge and belief such information is true, complete, and accurate. Gary Moseley Manager. Western N. C. Printed name of Person Signing Title Signature of Applicant Date North Carolina General Statute 143-215.6 (b)(2) provides that: Any person who knowingly makes any false statement representation, or certification in any application, record, report, plan, or other document files or required to be maintained under Article 21 or regulations of the Environmental Management Commission implementing that Article, or who falsifies, tampers with, or knowingly renders inaccurate any recording or monitoring device or method required to be operated or maintained under Article 21 or regulations of the Environmental Management Commission implementing that Article, shall be guilty of a misdemeanor punishable by a fine not to exceed $25,000, or by imprisonment not to exceed six months, or by both. (18 U.S.C. Section 1001 provides a punishment by a fine of not more than $25,000 or imprisonment not more than 5 years, or both, for a similar offense.) Page 3 of 3 C-WTP 03/05 Horizon Engineering & Consulting, Inc. Mr. Macon C. Sammons, Jr. County Manager Surry County 118 Hamby Road Dobson, NC 27017 Subject: Request for Local Government Review NPDES Permit Application Existing Well Backwash Discharge Windgate Hill Subdivision Surry County Dear Mr. Sammons: 2510 Walker Road Mt. Pleasant, N.C. 28124-8567 704-788-4455 Fax: 704-788-4455 May 4, 2007 Attached is a copy of an application for permit signed by Aqua North Carolina, Inc. This application is for a permit for the continued discharge of backwash from filters installed on an existing potable well which serves the Windgate Subdivision, located outside Dobson off Simmons Road. I have also attached a map to indicate the existing location. As part of the application process, the state requires that we notify the local government and ask that they complete the attached form which indicates whether the local government has a zoning or subdivision ordinance and whether the continued discharge is consistent with that ordinance. This is an existing groundwater well that filters water through a series of filters before the water is distributed to the Windgate community. The filters are "backwashed" with water approximately once every day and approximately 1,680 gallons of water is then discharged in to the nearby stream. This has been in service for a number of years and we are not aware of any environmental concerns over this discharge, other than that the state has advised that we must apply for a permit. As the state has instructed, we are trying to file this application as soon as possible. If you could complete, sign and return this form, it will be very helpful. We apologize for the necessity to ask for this assistance but I hope that you can appreciate our dilemma. If you have any questions or if there is anything we need to discuss, please call me (704-788-4455.) C: Gary Moseley NC DENR Attachment A. Local Government Review Form General Statute Overview., North Carolina General Statute 143-215.1 (c)(6) allows input from local governments in the issuance of NPDES Permits for non -municipal domestic wastewater treatment facilities. Specifically, the Environmental Management Commission (EMC) may not act on an application for a new non -municipal domestic wastewater discharge facility until it has received a written statement from each city and county government having jurisdiction over any part of the lands on which the proposed facility and its appurtenances are to be located. The written statement shall document whether the city or county has a zoning or subdivision ordinance in effect and (if such an ordinance is in effect) whether the proposed facility is consistent with the ordinance. The EMC shall not approve a permit application for any facility which a city or county has determined to be inconsistent with zoning or subdivision ordinances unless the approval of such application is determined to have statewide significance and is in the best interest of the State. Instructions to the Applicant: Prior to submitting an application for a NPDES Permit for a proposed facility, the applicant shall request that both the nearby city and county government complete this form. The applicant must: • Submit a copy of the permit application (with a written request for this form to be completed) to the clerk of the city and the county by certified mail, return receipt requested. • If either (or both) local governmcnt(s) fail(s) to mail the completed form, as evidenced by the postmark on the certified mail card(s), within 15 days after receiving and signing for the certified mail, the applicant may submit the application to the NPDES Unit. • As evidence to the Commission that the local government(s) failed to respond within 15 days, the applicant shall submit a copy of the certified mail card along with a notarized letter stating that the local governments) failed to respond within the 15-day period. Instructions to the Local Government: The nearby city and/or county government which may have or has jurisdiction over any part of the land on which.the proposed facility or its appurtenances are to be located is required to complete and return this form to the applicant within 15 days of receipt. The form must be signed and notarized. Name of local government 4,1,004/,, (City/County) Does the city/ c ty have jurisdiction over any part of the land on which the proposed facility and its appurtenances are to be located? Yes ) No [ ] If no, please sign this form, have it notarized, and return it to the applicant. PP Does the city/county have in effect a zoning or subdivision ordinance? Yes [�No [ ] Nore ;�.a zoning or subdivision ordinance in effect, is the plan for the proposed facility consistent with the ordinance? Yes [• ] Date Zr'1 to Signature !%L� e� (Cj Plamt DiiecA i day of ' ' ""'""�/ O�l!"/. personally appeared before me, the said name to me known and known to me to be the person described in and who execute e foregoing do ent and he (or she) acknowledged that he (or she) executed the same and being duly worn by me, made oath that the statements in the foregoing document are true. My Commission expires OFFICIAL SEAL DEANNA D. HENDERSON ,Kota SUPuPRRY COUNTYNorth raIUa My m, i ion Expires .(Signature of Notary Public) EAA Guidance Document Version: June 2.3. 2005 Notary Public (Ojf icial Seal) 1 Existing Wastewater Discharge Alternatives Evaluation MEI Aqua North Carolina, Inc. Windgate Subdivision Dobson, N.C. Surry County rml Applicant : Aqua North Carolina, Inc. 4163 Sinclair Street Denver, N.C. 28037 Ph: 704-489-9404 1.1 Contact: Gary Mosely Facility : Prepared by: Windgate Subdivision Well # 1 Aqua North Carolina, Inc. Simpson Road Dobson, N.C. 27017 Ph: 704-489-9404 Contact: Gary Moseley J. Thurman Horne, P.E. Horizon Engineering & Consulting 2510 Walker Road Mt. Pleasant, N.C. 28124 P h : 704-788-4455 Date: May 4, 2007 PER Itoilf Of SEAL �o 10436 la b ` 40• 0 a o QQr �URI(A\i 84 satosit 3 MA Pon MO PPR MI Section 'I: General 1.01 Introduction: Aqua North Carolina, Inc. (Aqua NC) currently owns and operates an existing well water system serving Windgate Subdivision (Windgate), located northeast of Dobson, N.C. in Surry County. Well #1 of the water system uses an assembly of green sand filters in the treatment of groundwater prior to distribution to the Windgate community. These filters are backwashed, using potable water, approximately once every day. This backwash is a relatively small volume of approximately 1,680 gallons. The discharge exits the well house via a 2" PVC pipe and is released into an intermittent stream that is an unnamed tributary to Fisher River in the Yadkin River basin. Fon The well has a good overall history of compliance with water supply regulations, but is required to obtain an NPDES permit for the continued operation of the im existing backwash discharge. MI Psol Pon PM Nal Rol MO MI WI OM The Windgate water system currently has 60 customers. Well # 1 is approved for 85 gpm. No expansion of this well is planned and the current two well system is sufficient to serve the subdivision. Whereas there are no plans for expansion of the subdivision or service area, there is no potential for any substantial population increase to affect the existing rate of water use or backwash discharge flow (1,680 gpd.) The review of this source and the consideration of alternatives is being made with inclusion of consideration of the guidance contained in "Permitting Strategy For Greensand Filtration Water Treatment Plants - January 2004") 1.02 Scope: The scope of this project is limited to the investigation and evaluation of alternatives for treating and/or disposing of the existing green sand filter backwash from Well # 1 at Windgate Subdivision. This includes consideration of the feasibility of continuing the existing discharge and options for eliminating the existing discharge. Section 2: Background Information 2.01 Project Area: The existing service area is limited to the Windgate Subdivision. All homes are single family residences. There are no commercial or industrial customers. All wastewater is typical backwash from green sand filters. The existing discharge coordinates are: Longitude: -80 deg. 40 min. 43 sec. W Latitude: 36 deg. 24 min. 29 sec. N • 4 MI MI FUR 2.02 Site Characteristics: The subdivision is located in a rural portion of Surry county, outside any municipal limits and remote from public water and/or sewer. The nearest existing sewer is approximately 2.7 miles away. The general area has soil characteristics which are limited to the possibility of on . site treatment and disposal. MI PM P, NM PEII Terrain is generally rolling but has been graded level at the existing well site. 2.03 Receiving Stream Characteristics: The receiving stream is intermittent in nature and is an unnamed tributary to Fisher River which is Class C waters. The receiving stream is obviously a zero flow stream (7Q10 and 30Q2 = 0) but since the wastewater discharge is not oxygen consuming, discharge into the zero flow stream should be allowable under state procedures. This receiving stream has no known outstanding features or characteristics that should preclude the continuation of the existing discharge. There are no known endangered or threatened species and these are not threatened or impaired waters. Section 3: Existing Utilities 3.01 Public Facilities: The nearest existing public sewer is located approximately 2.7 miles southwest of the existing well at the junction of North Main Street and Ridge Road. The distance that would be required for sewer force mains to be installed would be approximately 14,000 ft. This would be the route that appears to be the most practical from an engineering perspective to take advantage of following existing highway right of way and have minimal impact to adjacent property owners. This sewer is operated by the Town of Dobson. The Town Manager's office was consulted and has advised that this is the nearest location of available sewer and that the Town has no plans within the next ten years or beyond to extend service any closer to the Windgate vicinity. MEI 3.02 Private Facilities: There are no known existing private sewer utilities within any reasonable proximity ar of Windgate that would be available for consideration as a possible alternative. A review of available information did not reveal that there are any potentially useable M, private sewer facilities within a two mile radius. 5 Section 4: Alternatives For Service FM 4.01: On site surface and/or subsurface disposal: no Subsurface Disposal: PMIt mat PIM Appendix E contains portions of soil survey reports that provide insight as to the suitability of the soils for subsurface disposal. As described in the report, these soils are mainly Fairview soils with characteristics that are somewhat limited to very limiting with respect to the potential for subsurface disposal. In addition to researching the information available from NRCS soils maps, the engineer consulted with Mr. Johnny E. Easter, RS, Surry County Environmental Health Director concerning the possibilities of subsurface disposal. Mr. Easter suggested that, for purposes of evaluating this based on the limited information available, an application rate of 0.25 gpd/SF would be a reasonable assumption. Of course, before a final design and/or approval could be given, an actual on site soils evaluation would be required. For the purposes of evaluating this as a possible option, a design application rate of 0.25 gpd/SF will be used. Subsurface disposal requires buffers and land for the drainfields as well as equal areas of suitable soil, be available and maintained as potential repair/replacement areas. Aqua North Carolina only owns a 100 foot radius lot around the well. Whereas the well must have a 100 foot buffer to any disposal site, this would necessitate that Aqua North Carolina acquire additional property to allow for the possible subsurface disposal site, repair/reserve area and buffers. Given the limitations described in the attached soil survey, it is doubtful that this is a viable option. A full and extensive soils investigation of potential sites would be necessary to confirm if useable areas are available. In keeping with the state guidance for alternatives evaluation, the cost effectiveness of this alternative is further evaluated to determine if a detailed soils analysis is appropriate. The costs associated with this option are estimated in Appendix A. This option would require that the existing discharge be conveyed to an acquired site having sufficient area for subsurface disposal and a suitable reserve area of equal size, and that these areas include adequate buffers from property lines, homes, wells, etc. Surface Irrigation: Disposal by irrigation requires storage capacity for periods of inclement weather when application is not allowable. Therefore consideration of this as a possible alternative must also include the provision of storage of the backwash waters during periods of inclement weather. 6 ,., As noted earlier, the soils surveys for this area has determined this to have limited to severely limited potential for on site subsurface disposal. Consideration of this alternative is based on an assumed allowable application rate of 0.20 inches per P., week which is based on a typical range of 0.15 to 0.25 inches per week for this geographic area and the soil conditions generally described in the soils survey. Storage requirements for this area are typically in the range of 45 to 90 days. For wi purposes of this assessment, a storage requirement of 60 days will be assumed. PR MR Whereas all of the area currently owned by Aqua NC is within the required 100 foot buffer zone, the only possible alternative for on site disposal, either by subsurface or surface application, would require the acquisition of off site properties for disposal. Considering the relatively benign nature of the current discharge it is not expected that any additional treatment would be required for surface application. Although the additional cost of conveyance and the additional costs for on site disposal should readily be recognized as a significant cost increase as compared to the alternative of continued discharge, an estimate of the costs for this alternative is included in Appendix A for comparison. The evaluation is based on a very conservative assumption that the nearest available lands that could be reasonably used would actually be available. A comparison of the costs were made first, using the best (lowest cost) reasonable assumptions. It would obviously be necessary to perform a more detailed site investigation and ascertain if the property owner would consider allowing these lands to be acquired for this purpose. 4.02: Wastewater Reuse Options for reuse of wastewater for this area are essentially nil. Reuse is usually associated with non -potable uses such as irrigation. This becomes potentially more viable if there is a need or outlet for reuse such as irrigation of a golf course. The volume of this discharge is very low and would have little attraction as a source for recycle purposes. This area does not have a golf course, nor are there any other viable options for reuse associated with the subdivision or in the surrounding area. 4.03: Surface Water Discharge This is the current method of wastewater disposal. There is no anticipated need to add any new facilities for additional treatment. An estimate of the costs for the continuation of this alternative is included in Appendix A for comparison. 7 .. Pal NOR 4.04: Combination of Alternatives Alternatives to discharge that may be technologically feasible, such as connection to the nearest public sewer, subsurface disposal and/or surface irrigation, could not be employed in conjunction with the current method of disposal (surface water discharge) and yield any reduction in capital expenditures. The evaluation of alternatives shows that these alternatives are clearly not viable due to the overwhelming magnitude of associated cost. Combining one of these alternatives while continuing the periodic discharge, yields no reduction in the cost for non -discharge alternatives and merely increases the overall costs. There would be no reduction in capital costs for any of these alternatives and the operating costs for combining surface discharge with either of the other alternatives would be greater than for any single alternative that might be selected. In short, whereas the conclusion that continued surface discharge is the only viable option due to the overwhelming differential in capital and operating costs, any addition of an additional alternative would merely make the cost differential worse. Section 5: Summary and Conclusions: As can be seen from a comparison of the net present value of the various alternatives, there is a wide difference between the cost estimate of the option of continuing discharge and options to eliminate the discharge. Compared to the cost of the next most cost effective and reliable alternative (subsurface disposal) the estimated Net Present Value is approximately 1,023 % greater. This represents a difference of $2,139 NPV per customer. In light of the financial impracticality, it is not necessary to further pursue whether connection is politically acceptable to the POTW, or whether land based disposal options are workable. By far, the most practical and cost effective alternative is the continued discharge of the relatively benign filter backwash waters. Section 6: Proposed Wastewater Treatment Facilities: an, Based on the findings of this evaluation, it has been concluded that the most economical and practical alternative is to continue discharge to surface waters. . 9 1. Surface Water Discharge at 1,680 GPD Flow Rate: AIM Whereas this is the existing method of disposal and considering that no additional treatment is expected as a consequence of any forthcoming permit, there are no MR estimated additional capital costs. The only anticipated increase in operation and maintenance costs are those associated ".► with the collection, analysis and reporting of effluent discharge samples as required by an NPSES permit. Mel OR MEI Capital Cost: Operation & Maintenance Cost Total Capital Cost = $ 0.00 " (Present Value, 20 year life, 5.875% interest): NMI PIR ". Annual Cost Operation & Maintenance ($ 100/mo. X 12 mo/yr) Total Annual Cost = $ 1,200 PV Annual Cost = $ 13,905 Total Net Present Value Mill IMII $ 13,905 $ 1,200 10 2. Connection to POTW Sewer System at junction of North Main Street and Ridge pi, Road: Install new lift station to collect discharge and convey by force main along existing high F., way right of way to junction with existing municipal sewer. own Pul Distance = approx. 14,000 LF Begin elev. = approx. 1140.0 Highest elev. = approx. 1205.0 Lift station Avg. flow = 1,680 gpd = 1.2 gpm Peak flow = 2.5 x 1.2 gpm = 3 gpm Pump Design Use 1" Sch. 40 PVC, approx. 14,000LF FH @ 3 gpm = 0.68 ft/100 ft = 95.2 ft. SH = 65 ft (approx.) Use TDH = 165 ft. 0.1 Use dual effluent pumps (rated at 165 ft. TDH at 3 gpm) OSI P301512 or approved equal . Capital Cost: Item: Quantity: Unit Cost: Cost: ., 1" force main sewer 14,000 LF $ 8 $ 112,000 Air release 6 Ea. $ 2,500 $ 15,000 im Pump Station 1 Ea $ 45,000 $ 45,000 Manholes 1 Ea $ 1,800 $ 1,800 Tap Fee 1 Ea. $ 3,000 $ 3,000 im Wastewater Capacity Use Fee 1 Ea. $ 3,000 $ 3,000 Road Crossings 8 Ea $ 5,000 $ 40,000 „0 Creek Crossings 5 Ea $ 5,000 $ 25,000 Metering Station 1 Ea. $ 30,000 $ 30,000 Tie to exist. MH 1 Ea $ 1,000 $ 1,000 Erosion control LS $ 25,000 $ 25,000 Easement/Right of Way 3,000 LF $ 10 $ 30,000 Clearing (approx. 3.5 acre) 3.5 acre $ 6,500 $ 22,750 ,p Surveying 5 days $ 1,500 $ 7,500 Electrical LS $ 8,000 $ 8,000 Legal LS $ 8,000 $ 8,000 Sub -total $ 377,050 Engineering 15 % 56,557 11 0.1 Total Capital Cost = $ 433,607 WI Operation & Maintenance Cost: Local government sewer fee = $ 3.44/1000 Gallons PI► Annual sewer charges = $ 3.44/1000 Gal x 1,680 gpd x 365 day/yr = $ 2,109 tin Annual electrical charges = $ 225/month X 12 mo/yr = $ 2,700 �+ Annual sample analysis charges = $ 100/mo. X 12 mo/yr = $ 1,200 Annual repair and maintenance = $ 150/mo. X 12 mo/yr = $ 1,800 wil (Present Value, 20 year life, 5.875% interest) Total annual costs = $ 7,809 foll Present Value Annual Cost = $ 90,485 Total Net Present Value = $ 524,092 12 Awl 3. Land Based Disposal: 3A. Subsurface Disposal: �., Based on the soil survey information and the engineers field observations, the soils in this area appear to be limited to severely limited as a medium for subsurface disposal. In the event that it was found to be apparently a cost effective alternative, an in depth site specific soil investigation would need to be done to confirm that the soils could in fact be used. However, for the purpose of comparing the potential alternatives within the scope of this evaluation, it will be assumed that a typical low design loading rate would be fir workable. Therefore, it will be assumed that a loading rate of 0.25 gpd/sq. ft. is acceptable. PEI PRI NPR PEI w Therefore, based on the design flow, the area required for subsurface disposal is: 1,680 gpd / 0.25 gpd/sq. ft. = 6,720 SF Whereas it is required to maintain an equal size area as a reserve for future repair, the required area is 13,440 SF. Assuming a roughly rectangular field (135 ft x 100 ft. for the initial drain field plus repair and In order to maintain the required buffers to property lines, etc.), the minimum estimated land required is 47,000 SF or 1.1 acres. Capital Cost: Item: 4" sewer drain in 3' trenches Site Clearing Land 1" FM Pump Station Surveying Soils Investigation Quantity: 2,240 LF 0.5 acre 1.1 acres 100 LF 1 Ea 1 days 1 day Phase I Environmental Site Assessment LS Erosion control LS Electrical LS Legal LS Engineering 15 % Unit Cost: $ 12 $ 6,500 $ 20,000 $ 8 $ 15,000 $ 1,500 $ 1,500 $ 2,000 $ 4,000 $ 3,500 $ 3,000 Sub -total Total Capital Cost IMP Cost: $ 26,880 $ 3,250 $ 22,000 $ 800 $ 15,000 $ 1,500 $ 1,500 $ 2,000 $ 4,000 $ 3,500 $ 3,000 $ 83,430 12,515 $ 95,945 13 AIM Operation & Maintenance Cost (Present Value, 20 year life, 5.875 % interest): Annual Cost am O & M of drain field, Pump station and force main = $ 2,500/yr $ 2,500 MIR Annual electrical charges = $ 125/month X 12 mo/yr PV Annual Cost = $ 46,349 pm Total Net Present Value = $ 142,294 mr = $ 1,500 Total Annual Cost = $ 4,000 14 WI PPP IR 3B. Surface Irrigation: Surface irrigation preliminary design is based on an assumed allowable application rate of 0.20 gpd/sq. ft. and a required storage basin for 60 days design flow. Based on the design flow of 1,680 gpd, this results in an estimated disposal area of 8,400 SF. Allowing a recommended 50% repair area, the required total area is 12,600 SF. Assuming a roughly rectangular field (110 ft x 115 ft. for the initial spray field plus repair and in order to maintain the required 150 foot buffer to property lines), the minimum estimated land required is 172,225 SF or approximately 4 acres. 1.1 Capital Cost: Item: Quantity: Unit Cost: Cost: Poi 100,800 gal. storage basin (1) $ 19,500 Surface irrigation system 8,400 SF $ 0.35 $ 2,940 PIO Monitoring wells 4 ea $ 4,000 $ 16,000 Land 4 acres $ 20,000 $ 80,000 Fencing 2,000 LF $ 6.00 $ 12,000 2" FM 2,000 LF $ 8.50 $ 17,000 Manholes 1 Ea $ 1,600 $ 1,600 Pump Station 1 Ea $ 35,000 $ 35,000 im Surveying 3 days $ 1,500 $ 4,500 Soils Investigation 2 days $ 1,500 $ 3,000 Phase I Environmental Site Assessment LS $ 3,000 $ 3,000 c''' Erosion control LS $ 10,000 $ 10,000 Easement/Right of Way 1,000 LF $ 10 $ 10,000 Clearing (approx. 1.2 acre) 1.2 acre $ 6,500 $ 7,800 M' Electrical LS $ 5,000 $ 5,000 Legal LS $ 5,000 $ 5,000 cm MO POI OR Engineering 15 % Sub -total $ 232,340 34,581 Total Capital Cost = $ 267,191 (1) Storage: Excavation 625 cu. Yds. @ $ 6.00/yd = $ 3,725 Compaction and Lining 4,500 SF @ $ 3.50/SF = $ 15,750 Sub -total = $ 19,500 15 flot IIIR FM Operation & Maintenance Cost (Present Value, 20 year life, 8% interest): Annual Cost 0 & M of spray field, Pump station and force main = $ 3,500/yr $ 3,500 Annual electrical charges = $ 250/month X 12 mo/yr = $ 3,000 1.1 Annual sample analysis charges = $ 100/mo. X 12 mo/yr = $ 1,200 Total Annual Cost = $ 7,700 Fingl PV Annual Cost = $ 89,222 f.`' Total Net Present Value = $ 366,413 110 Exist Discharge ' ' %,►- Qs( Longitude: -80 deg. 40 min. 43 sec. W Latitude: 36 deg. 24 min. 29 sec. N 0 0.3 0.6 0.9 1.2 1.5 km 0 0.2 0.4 0.6 0.8 36° 24.49'N, 80° 40.72'W (NAD27) USGS Dobson (NC) Quadrangle Projection is UTM Zone 17 NAD83 Datum 1 mi L"-"ALL''-(1( Iv1* I,1=-7.517 • G=0.191 Windgate Subdivision - Well # 1 USGS Location Map Horizon Engineering & Consulting, Inc. 2510 Walker Road Mt. Pleasant, N.C. 28124 May 2, 2007 Dobson, N.C. Scale: 1" = 1,600' . . ,0 ';f72 North Windgate Subdivision - Well if 1 Aerial Photo - Location Map Horizon Engineering & Consulting, Inc, 2510 Walker Road Mt. Pleasant, N.C. 28124 May 2, 2007 Dobson, N.C. Scale: 1" = 330' Windgate Subdivision - Well # 1 Possible Route for Connection to POTW Dobson, N.C. Scale: 1" = 1,600' Horizon Engineering & Consulting, Inc. 2510 Walker Road Mt. Pleasant, N.C. 28124 May 2, 2007 -17 tfff..� T1`,n Windgate Subdivision - Well # 1 Possible Location for Subsurface Disposal North Exist. Well Horizon Engineering & Consulting, Inc. 2510 Walker Road Mt. Pleasant, N.C. 28124 May 2, 2007 Dobson, N.C. Scale: 1" = 330' ti • Prop. Surface Disposal (Property must be acquired) Exist. Weil North :. Windgate Subdivision - Well # 1 Possible Location for Surface Disposal Horizon Engineering & Consulting, inc. 2510 Walker Road Mt. Pleasant, N.C. 28124 May 2, 2007 Dobson, N.C. Scale: 1" = 330' 4SIS = i1i :01v0S 0 N� 0 z rn CD fD QO 0 0 to 5) �cocuu 528300 528400 528500 t..... 528200 528300 528400 528500 528600 528700 528800 528900 529000 -+ USDA Natural Resources Conservation Service Meters 0 50 100 200 Web Soil Survey 1.1 National Cooperative Soil Survey 529100 529200 52 i3C 529100 529200 Feet 0 150 300 • 600 900 1,200 4/26/2007 Page 1 of 3 Sewage Disposal Surry County, North Carolina [The information in this table Indicates the dominant soil condition but does not eliminate the need for onsite investigation. The numbers in the value columns range from 0.01 to 1.00. The larger the value, the greater the potential limitation. The table shows only the top five limitations for any given soil. The soil may have additional limitations] Map symbol and soil name Suches FeB2: Fairview, moderately eroded FeC2: FeD2: FfD: Fairview, ston FnB2: Fairview,` moderately: eroded:. ,- Pct. of map unit Septic tank absorption fields Sewage lagoons Rating class and limiting features 39 Very limited Flooding Depth to saturated zone Seepage, bottom layer Slow water movement omewhat iimite, „,. verve_ somewhat limit ow *water. movement Value Rating class and limiting features Value Very limited 1.00 flooding 1.00 1.00 Depth to saturated 1.00 zone 1.00 Seepage 1.00 0.50 USDANatural Resources This report shows only the major soils in each map unit Others may exist. Tabular Data Version: 9 Conservation Service Tabular Data Version Date: 03/08/2007 Page 1 of 3 Sewage Disposal Surry County, North Carolina Map symbol and soil name Pct. of map unit Septic tank absorption fields Sewage lagoons Rating class and limiting features Value Rating class and limiting features Value noir FnC2: FrC2: Fairview;: moderately erode Siloam, moderately eroded Ud: ras1 WfB2: Woolwine, moderately erod P�1 Somewhat lcmtei low water>: movemeni" Slope, 30 Very limited Depth to bedrock Slope limite .epth to lo-w.wat oveme Fairview, moderately eroded 34 Somewhat limited cun Slow water movement rim :Westfield, moderately erodeomewhat.hmited epth to. bedroc low waI movers t>� limite �, f Deptl lope y� - iowwater movemeri aw 1.00 0.98 0.68 Very limited 1.00 Depth to hard 0.04 bedrock Depth to soft bedrock 1.00 Slope 1.00 Somewhat limited 0.50 Seepage Slope somewhat limitei :epage lope �eptlilo sot USDANatural Resources This report shows only the major soils in each map unit Others may exist. Tabular Data Version: 9 Conservation Service Tabular Data Version Date: 03/08/2007 Page 2 of 3 Ian fUln Fug PEI Sewage Disposal This table shows the degree and kind of soil limitations that affect septic tank absorption fields and sewage lagoons. The ratings are both verbal and numerical. Rating class terms indicate the extent to which the soils are limited by all of the soil features that affect these uses. "Not limited" indicates that the soil has features that are very favorable for the specified use. Good performance and very low maintenance can be expected. "Somewhat limited" indicates that the soil has features that are moderately favorable for the specified use. The limitations can be overcome or minimized by special planning, design, or installation. Fair performance and moderate maintenance can be expected. "Very Limited" indicates that the soil has one or more features that are unfavorable for the specified use. The limitations generally cannot be overcome without major soil reclamation, special design, or expensive installation procedures. Poor performance and high maintenance can be expected. Numerical ratings in the table indicate the severity of individual limitations. The ratings are shown as decimal fractions ranging from 0.01 to 1.00. They indicate gradations between the point at which a soil feature has the greatest negative impact on the use (1.00) and the point at which the soil feature is not a limitation (0.00). "Septic tank absorption fields" are areas In which effluent from a septic tank is distributed into the soil through subsurface tiles or perforated pipe. Only that part of the soil between depths of 24 and 72 inches or between a depth of 24 inches and a restrictive layer is evaluated. The ratings are based on the soil properties that affect absorption of the effluent, construction and maintenance of the system, and public health. Saturated hydraulic conductivity (Ksat), depth to a water table, ponding, depth to bedrock or a cemented pan, and flooding affect . absorption of the effluent. Stones and boulders, ice, and bedrock or a cemented pan interfere with installation. Subsidence interferes with installation and maintenance. Excessive slope may cause lateral seepage and surfacing of the effluent in downslope areas. Some soils are underlain by loose sand and gravel or fractured bedrock at a depth of less than 4 feet below the distribution lines. In these soils the absorption field may not adequately filter the effluent, particularly when the system is new. As a result, the ground water may become contaminated. "Sewage lagoons" are shallow ponds constructed to hold sewage white aerobic bacteria decompose the solid and liquid wastes. Lagoons should have a nearly level floor surrounded by cut slopes or embankments of compacted soil. Nearly impervious soil material for the lagoon floor and sides is required to minimize seepage and contamination of ground water. Considered in the ratings are slope, saturated hydraulic conductivity (Ksat), depth to a water table, ponding, depth to bedrock or a cemented pan, flooding, Large stones, and content of organic matter. Saturated hydraulic conductivity (Ksat) is a critical property affecting the suitability for sewage lagoons. Most porous soils eventually become sealed when they are used as sites for sewage lagoons. Until sealing occurs, however, the hazard of pollution is severe. Soils that have a Ksat rate of more than 14 micrometers per second are too porous for the proper functioning of sewage lagoons. to these soils, seepage of the effluent can result in wir contamination of the ground water. Ground -water contamination is also a hazard if fractured bedrock is within a depth of 40 inches, if the water table is high enough to raise the level of sewage In the lagoon, or if floodwater overtops the lagoon. ran A high content of organic matter is detrimental to proper functioning of the lagoon because it inhibits aerobic activity. Slope, bedrock, and cemented pans can cause construction problems, and large stones can hinder compaction of the lagoon floor. If the lagoon is to be uniformly deep throughout, the slope must be gentle enough and the soil material must be thick enough over bedrock or a cemented pan to make land smoothing practical. raln Information in this table is intended for land use planning, for evacuating land use alternatives, and for planning site investigations prior to design and construction. The information, however, has limitations. For example, estimates and other data generally apply only to that part of the soil between the surface and a depth of 5 to 7 feet. Because of the map scale, small areas of different soils may be included within the mapped areas of a specific soil. MIR The information is not site specific and does not eliminate the need for onsite investigation of the soils or for testing and analysis by personnel experienced in the design and construction of engineering works. Government ordinances and regulations that restrict certain land uses or impose specific design criteria were not considered in preparing the information in this table. Local ordinances and regulations should be considered in planning, in site selection, and in design. USDA Natural Resources This report shows only the major soils in each map unit Others may exist. Tabular Data Version: 9 Conservation Service Tabular Data Version Date: 03/08/2007 Page 3 of 3 J STORY ID#: A SYSTEM ID#: - C OF SYSTEM: RESEARC%I St ANA[yTICA[ LABORATORIES, INC. Analytical/Process Consultations MEW WELL INORGANIC CHEMICAL ANALYSIS 3 7 7 0 1 COUNTY: Wingate #1 try( tin. iv OF SAMPLE: W = Source 2RL,LECTED ON: DATE: 0 8/ 0 5 /9 1— (MM/DD/YY) ,C 2ATION WHERE COLLECTED: :QjLEC'1'ED BY: i L RESULTS TO: New Well TIME: 1 4 :0 5 P. M (HH:MM XM) Town & Country Builders 660. Lebanon Mt. Airy, NC 27030 TELEPHONE # ( 919) 786-2115 ( ( ( SOURCE CODE: TYPE OF SUPPLY: ( ) COMMUNITY NTNC ) NON -COMMUNITY PRIVATE WAihR SOURCE: ( X ) GROUND CONTAM CODE 0100 1005 1010 1015 1016 1017 1020 1022 1025 1028 1030 1031 1032 1035 1040 1045 1050 1052 1068 1095 1905 1915 1925 1927 NAME ******************** TURBIDITY, ntu ARSENIC, mg/1 BARIUM, mg/1 CADMIUM, mg/1 CALCIUM, mg/1 CHLORIDE, mg/1 CHROMIUM, mg/1 COPPER, mg/1 FLUORIDE, mg/1 IRON, mg/1 LEAD, mg/1 MANGESIUM, mg/1 MANGANESE, mg/1 MERCURY, mg/1 NITRATE, mg/1 SELENIUM, mg/1 SILVER, mg/1 SODIUM, mg/1 ACIDITY, mg/1 ZINC, mg/1 COLOR, units TOTAL HARDNESS, mg/1 pH, units ALKALINITY, mg/1 METHOD CODE RESULTS ***** ********** 0 0 1 1 2 5 1 0 _1 1 0 1 101 1 2 1 0 1 L_0s 1 0 7 1 0 1 1 2 5 1L 0 1 1 fl La 1 25 1 .0 L41 1 5 7 T U -I 1 2 9 1 4 1 3 5 1 4 2 1.0 <0.0 1 0 <0.0 4 0 <0.0 0 2 13.1 1.5 0 <0.0 1 0 T. <0..1 0 0.1 0 <0.0 0 2 5 0 6 8 3 <IS��T� <0 .0 0 0 2 0.2 7 5 <0.0 0 2 5 <0.0 0 5 1.4 7 5 .0 0.0 3 1 — 2,5 - 4 2 .0 7 .a -- - - 4 -.57) ALLOW. LIMITS ****** N/A O.050 1.000 0.010 N/A N/ A 0.050 1.000 4.000 0.300 0.050 N/A 0.050 0.002 10.00 0.010 0.050 N/A N/A 5.000 15.00 N/A G 6.5 N/A AMPLE UNSATISFACTORY ( ) IA F. ANALYSES BEGUN: 0 8 /0 6 / 9 1 DATE ANALYSES COMPLETED:0 8 P. 0. Box 473 • 106 Short Street RESAMPLE REQUES1'hD ( ) / 1 8 • k ZiN ilFI{F1+.Pr tf.PL,4olitla 272Rz1 111 9141j94-lr, ;1fl 11 9 1 ( RESEARCh & ANA1yTICAl LAbORATORIES, INC. Analytical/Process Consultations WWI BP'tATORY ID#: 3 7 7 0 1 TL.2 SYSTEM ID# : _ - _ _ M -OF SYSTEM: Wingate #1 P. OF SAMPLE: E = Entry LCTED ON: DATE: — / C ['ION WHERE COLLECTED: ELECTED BY: RESULTS TO: 8/26/91 CORROSIVITY ANALYSIS -- -- New Well (MM/DD/YY) COUNTY: trA !ft'1. l.: TIME: — — — Town & Country Builders 660 Lebanon Mt. Airy, NC 27030 TELEPHONE # ( 919 ) 786-2115 DNTAM DID; NAME *,• **************** 910 LANGELIER INDEX 91A Ca HARDNESS, mg/1 9 ; pH, units 927 ALKALINITY, mg/1 .92.0 TDS, mg/1 .9 5 TEMPERATURE, C METHOD CODE *** 138 141 135 142 139 130 ;F"PLE UNSATISFACTORY ( ) DATE ANALYSES BEGUN: 0 8/0 6 /9 1 30,21ENTS : RESULTS *****,*** —1 •779 32.7 1 4 5. 0 - 6 6. 0 - 1 6. Y°l (fill : MM X.M ) LOCATION/SOURCE CODE: TYPE OF SUPPLY: ( ) COMMUNITY ( ) NTNC ( ) NON -COMMUNITY ( ) PRIVATE WATER SOURCE (S) : ( ) GROUND ( ) SURFACE ( ) PURCHASED TYPE TREATMENT: ) NONE CHLORINATED FLUORIDATED ) FILTERED ALUM LIME SODA ASH CAUSTIC WATER SOFTENER POTASSIUM PERMANGANATE PHOSPHATE, IRON CONTFOL PHOSPHATE, MAN:;. CONTROL PHOSPHATE, CORR. CCNTRJL OTHER RESAMPLE REQUESTED ( ) DALE, ANALYSES COMPLETED: 0 8/ 1 8 / 9 1 CERTIFIED BY: P. 0_ Box 473 • 108 Shnrt Street • Kernersville. Nprth Carolina 272E 1 • 919/996 29.11 PIP PEP 16,1 foll MEP CEM Four (4) Potassium Permanganate Feed Tanks (One each to each green sand filter) To Windgate Subdivision Water System i==> fi Four (4) Green Sand Filters (In parallel) fi Chlorine Addition fi Well Water => Backwash Discharge to unnamed tributary to UT to Fisher River Windgate Subdivision - Well # 1 Existing Well System - Process Flow Diagram Dobson, NC Scale: NTS Horizon Engineering & Consulting. Inc. 2510 Walker Road Mt. Pleasant, N.C. 28124 May 4, 2007 1 PEI 27 PM OM Mil Residuals Management Plan Prepared by: J. Thurman Horne, P.E. Horizon Engineering & Consulting, Inc. Residuals Management Plan: ''"I The proposed continued surface water discharge will have no impact on existing residuals management. There are no wastewater treatment facilities. pm The nature of the operation (backwashing of green sand filters) is such that only minor amounts of solids (less than 30 mg/1) are released with the discharge. pR' There is no generation of any grits, sludges or residuals for removal or disposal. PM disposition. Pin MA This project does not increase or alter the amounts of sludge produced or impact the current methods of Windgate Subdivision Raw Water Analytical.Test Results Field Test Results — Analysis performed by Aqua North Carolina, Inc. Note: Results on this form are transposed from attached Chain of Custody Form TRC = 0.0 mg/1 PH = 6.8 s.u. Temperature = 15 deg. C. Aug•24. 2007 10:20AM RESEARCH & ANA1yTICA1 LAbORATORiES, INC. Analytical/Process Consultations Aqua NC P.O. Box 4889 Cary, NC 27519 Attn: 'Rene Miller Date Sample Collected Date Sample Received Date Sample Analyzed Date of Report Analyses Performed by Lab Sample Number 596404 -.===========_===============_===== =____ Parameter SALINITY Storet # Clients Sample Source Number Time Collected (Hrs) Results 0.1 ppt WINDGATE No.0529 P. 8 AP% ti. ANAL t. 08/15/07 08/15/07 08/15/07 08/17/07 SW _-______ P.O, sox 473. 106 Short Street - Kernersville, North Caroline 27284.336-996-2841 • Fax 336-986-0325 www.researchanrlanalytical.com Environmental Conservation Laboratories, Inc. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 www.encolabs.com Monday, September 10, 2007 Aqua NC - Denver (AQ004) Attn: Debbie Gentry 4163 Sinclair Street Denver, NC 28037 RE: Laboratory Results for Project Number: [none], Project Name/Desc: NPDES Windgate ENCO Workorder: C711954 Dear Debbie Gentry, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Monday, August 20, 2007. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Link Thrower Operations Mgr Enclosure(s) The total number of pages in this report, including this page is 17. www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Clie tl id f ps ;Criilgate :<" A tj.ifi :. ID cia„ 9s o • '"`z�;, �8;��0%07� 1� 0 << :,`' �`;R`'= M.�rb^S.c:tr. • .• i:C'Ai8/.2J07h# Parameter EPA 160.1 EPA 160.2 EPA 160.5 EPA 180.1 EPA 200.7 EPA 245.1 EPA 300.0 EPA 310.2 EPA 335.2 EPA 350.3 EPA 351.2 EPA 353.2 EPA 365.4 EPA 420.1 SM 2340B Hold Date/Time(s) 08/27/07 08/27/07 08/22/07 12:20 08/22/07 12:20 02/16/08 09/17/07 09/17/07 09/03/07 09/03/07 09/17/07 09/17/07 09/17/07 09/17/07 09/17/07 02/16/08 Prep Date/Time(s) 08/23/07 08:58 08/22/07 11:17 08/22/07 09:39 08/22/07 11:47 08/23/07 11:11 08/29/07 10:03 09/08/07 11:34 08/28/07 12:44 08/28/07 12:48 08/23/07 09:34 08/27/07 12:40 08/22/07 13:53 08/27/07 12:42 08/23/07 09:46 08/23/07 11:11 Analysis Date/Time(s) 8/24/2007 14:00 8/23/2007 10:55 8/22/2007 09:39 8/22/2007 12:25 9/4/2007 15:34 8/30/2007 13:43 9/8/2007 18:44 8/28/2007 15:26 8/28/2007 20:50 8/23/2007 09:34 8/28/2007 10:26 8/22/2007 23:04 8/28/2007 14:23 8/24/2007 05:50 9/4/2007 15:34 Page 2 of 17 t SAMPLE DETECTION SUMMARY www.encolabs.com Giient ID: > sWtndgate�i 9M01W, M, 4 ;� % 1 • Analyte ' Results Flag MRL Units Method Notes Barium Calcium Chromium Fluoride Hardness Iron Magnesium Manganese Mercury Nickel Nitrate/Nitrite as N Phosphorus Selenium Total Alkalinity Total Dissolved Solids Turbidity Zinc 28.3 21700 12.7 0.30 75.7 231 5330 93.0 0.14 3 28.7 0.17 0.034 2.4 3 66 140 0.60 52.1 10.0 ug/L 100 ug/L 10.0 ug/L 0.10 mg/L 0.67 mg/L 50 ug/L 100 ug/L 10.0 ug/L 0.20 ug/L 10.0 ug/L 0.10 mg/L 0.030 mg/L 10.0 ug/L 15 m9/L 10 mg/L 1.0 N1U 10.0 ug/L EPA 200.7 EPA 200.7 EPA 200.7 EPA 300.0 SM 2340B EPA 200.7 EPA 200.7 EPA 200.7 EPA 245.1 EPA 200.7 EPA 353.2 EPA 365.4 EPA 200.7 EPA 310.2 EPA 160.1 EPA 180.1 EPA 200.7 Page 3 of 17 Description: Windgate Matrix: Waste Water Project: NPDES Windgate ANALYTICAL. RESULTS Lab Sample ID: C711954-01 Sampled: 08/20/07 12:20 Sampled By: William Young www.encolabs.com Received: 08/20/07 17:22 Work Order: C711954 Metals by EPA 200 Series Methods * - ENCO Cary certified analyte [NC 591) pnalvte rCAS Numberl Familia Elea liana QE ]gyp[, Mal. Retch Method Analyzed gy Notes Antimony (7440-36-0) * 2.0 U u9/L 1 2.0 10.0 7H23013 EPA 200.7 09/04/07 15:34 3DH Arsenic [7440-38-2] • 2.0 U ug/L 1 2.0 10.0 7H23013 EPA 200.7 09/04/07 15:34 3DH Barium [7440-39-3] • 28.3 ug/L 1 0.20 10.0 7H23013 EPA 200.7 09/04/07 15:34 3DH Beryllium [7440-41-7) * 0.70 U ug/L 1 0.70 1.00 7H23013 EPA 200.7 09/04/07 15:34 3DH Cadmlum [7440-43-9] * 0.50 U u9/L 1 0.50 1.00 7H23013 EPA 200.7 09/04/07 15:34 3DH Calcium [7440-70-2] * 21700 u9/L 1 7.00 100 7H23013 EPA 200.7 09/04/07 15:34 3DH Chromium [7440-47-3] * 12.7 ug/L 1 2.0 10.0 7H23013 EPA 200.7 09/04/07 15:34 3DH Copper [7440-50-8) * 0.60 U ug/L 1 0.60 10.0 7H23013 EPA 200.7 09/04/07 15:34 3DH Iron [7439-89-6] * 231 ug/L 1 20 S0 7H23013 EPA 200.7 09/04/07 15:34 3DH Magnesium [7439.95-4] • 5330 ug/L 1 20 100 7H23013 EPA 200.7 09/04/07 15:34 3DH Manganese [7439-96-5] * 93.0 ug/L 1 1.4 10.0 7H23013 EPA 200.7 09/04/07 15:34 3DH Mercury [7439-97-6] * 0.14 3 ug/L 1 0.11 0.20 7H29006 EPA 245.1 08/30/07 13:43 3DH Nickel [7440-02-0] * 28.7 ug/L 1 2.0 10.0 7H23013 EPA 200.7 09/04/07 15:34 3DH Selenium [7782-49-2] * 2A 3 u9/L 1 2.0 10.0 7H23013 EPA 200.7 09/04/07 15:34 3DH Silver [7140-22-4] * 2.0 U ug/L 1 2.0 10.0 . 7H23013 EPA 200.7 09/04/07 15:34 3DH Zinc [7440-66-6] * 52.1 ug/L 1 1.0 10.0 7H23013 EPA 200.7 09/04/07 15:34 3DH Page 4 of 17 Description: Windgate Matrix: Waste Water Project: NPDES Windgate Lab Sample ID: C711954-01 Sampled: 08/20/07 12:20 Sampled By: William Young www.encolabs.com Received: 08/20/07 17:22 Work Order: C711954 Classical Chemistry Parameters * - ENCO Cary certified anatyteINC 591) Apalvte rCAS Nurnberg &oda Bag Unita 12E lila. MU latch Method Analyzed Bx Nato Ammonia as N [NA] * 0.030 U mg/L 1 0.030 0.10 7H23008 EPA 350.3 08/23/07 09:34 OCN Hardness [NA] * 75.7 mg/L 1 0.10 0.67 7H23013 SM 2340E 09/04/07 15:34 JDH Nitrate/Nitrite as N [NA]' 0.17 mg/L 1 0.0066 0.10 7H22023 EPA 353.2 08/22/07 23:04 M3F Total Alkalinity [NA] * 66 mg/L 1 5.2 15 7H28013 EPA 310.2 08/28/07 15:26 PEV Total Dissolved Solids [NA] * 140 mg/L 1 10 10 7H23006 EPA 160.1 08/24/07 14:00 PEV Total Settleable Solids [NA] * 0.10 U mL/t. 1 0.10 0.10 7H22005 EPA 160.5 08/22/07 09:39 PEV Total Suspended Solids [NA] * 1.0 U mg/L 1 1.0 1.0 7H22013 EPA 160.2 08/23/07 10:55 30C Turbidity [NA] * 0.60 J NTU 1 0.50 1.0 7H16007 EPA 180.1 08/22/07 12:25 CIa4 Page 5 of 17 Description: Windgate Matrix: Waste Water Project: NPDES Windgate Lab Sample ID: C711954-01 Sampled: 08/20/07 12:20 Sampled By: William Young www.encolabs.com Received: 08/20/07 17:22 Work Order: C711954 Classical Chemistry Parameters s - ENCO Orlando certified analyte ANC 4241 gpalvte rCAS Number] Results F%S Unita pE MU MR4 Batch Meth4,l] A/lalvzed Ay Notes Cyanide (total) [57-12-5] * 0.018 U mg/L 1 0.018 0.040 7H28002 EPA 335.2 08/28/07 20:50 AH Fluoride [16984-48-8] * 0.30 mg/L 1 0.05 0.10 7I08003 EPA 300.0 09/08/07 18:44 RSA Phenol cs [NA] * 0.02 U mg/L 1 0.02 0.05 7H22007 EPA 420.1 08/29/07 05:50 CAS Phosphorus [7723-14-0] * 0.034 mg/L 1 0.020 0.030 7H27021 EPA 365.4 08/28/07 14:23 KG Total Kjeldahl Nitrogen [NA] * 0.043 U rng/L 1 0.043 0.050 7H27020 EPA 351.2 08/28/07 10:26 KG This report relates only to the sample as received by the laboratory, and may only be reproduced In full. Page 6 of 17 QUALITY CONTROL Metals by EPA 200 Series Methods - Quality Control www.encolabs.com Batch 7H23013 - EPA 3005A Blank(7H23013-BLK1) Prepared: 08/23/2007 11:11 Analyzed: 09/04/2007 13:01 Analyte Spike Source %REC RPD Result Flag MRL Units. Level Result %REC Limits RPD Limit Notes Antimony Arsenic Barium Beryllium Cadmium Calcium Chromium Copper Iron Magnesium Manganese Nickel Selenium Silver Zinc LCS (7H23013-BS1) 2.0 2.0 0.20 0.70 0.50 7.00 2.0 0.60 20 20 1.4 2.0 2.0 2.0 1.0 u u u u u u u u u u u u u u u 10.0 10.0 10.0 1.00 1.00 100 10.0 10.0 50 100 10.0 10.0 10.0 10.0 10.0 ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L Prepared: 08/23/2007 11:11 Analyzed: 09/04/2007 13:08 Analyte Spike Source %REC RPD Result Hag MRL Units Level Result %REC Limits RPD Limit Notes Antimony Arsenic Barium Beryllium Cadmium Calcium Chromium Copper Iron Magnesium Manganese Nickel Selenium Silver Zinc 0.3 0.5 0.52 0.26 0.26 5.06 0.5 0.25 5 5 0.2 0.5 0.5 0.05 0.5 0.01 0.01 0.01 0.001 0.001 0.100 0.01 0.01 0.05 0.1 0.01 0.01 0.01 0.01 0.01 mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L 0.250 0.500 0.500 0.250 0.250 5.00 0.500 0.250 5.00 5.00 0.250 0.500 0.500 0.0500 0.500 104 104 104 102 103 101 101 102 101 110 99 103 108 100 99 82-119 82-117 72-125 75-121 72-120 81-111 78-119 80-117 84-133 81-117 76-123 78-116 82-127 80-128 80-120 Matrix Spike (7H23013-MS1) Source: C711948-01 Prepared: 08/23/2007 11:11 Analyzed: 09/01/2007 13:39 Analyte Spike Source . %REC RPD Result Flag MRL Units Level Result %REC Limits RPD Limit Notes Antimony Arsenic Barium Beryllium Cadmium Calcium Chromium Copper Iron 0.3 0.5 0.54 0.26 0.26 36.7 0.5 0.26 5 0.01 0.01 0.01 0.001 0.001 0.100 0.01 0.01 0.05 mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L 0.250 0.500 0.500 0.250 0.250 5.00 0.500 0.250 5.00 -0.001 0.002 0.01 -0.0006 -0.0005 32.3 -0.006 -0.0006 0.4 103 104 105 104 103 08 101 103 101 38-138 64-126 74-119 70-131 68-121 63-131 73-120 75-123 48-144 Page 7 of 17 OUALITY CONTROL Metals by EPA 200 Series Methods - Quality Control www.encolabs.com Batch 7H23013 - EPA 3005A Matrix Spike (7H23013-MS1) Continued Source: C711948-01 Prepared: 08/23/2007 11:11 Analyzed: 09/04/2007 13:39 Analyte Spike Source %REC RPD Result ` Flag MRL `: ' Units Level Result %REC Limits RPD Limit Notes Magnesium Manganese Nickel Selenium Silver Zinc 8 0.4 0.5 0.5 0.05 0.5 0.1 0.01 0.01 0.01 0.01 0.01 mg/L mg/L mg/L mg/L mg/L mg/L 5.00 0.250 0.500 0.500 0.0500 0.500 Matrix Spike Dup (7H23013-MSD1) Source: C711948-01 3 0.2 -0.001 0.001 -0.0007 0.01 107 97 104 108 98 99 59-129 55-146 64-126 65-129 69-121 63-131 Prepared: 08/23/2007 11:11 Analyzed: 09/04/2007 13:46 Analyte Spike Source %REC RPD Result Flag MRL Units Level Result %REC Limits RPD Limit Notes Antimony Arsenic Barium Beryllium Cadmium Calcium Chromium Copper Iron Magnesium Manganese Nickel Selenium Silver Zinc Batch 71129006 - EPA 7970A Blank (7H29006-BLK1) 0.3 0.5 0.54 0.26 0.26 36.3 0.5 0.26 5 8 0.4 0.5 0.5 0.05 0.5 0.01 0.01 0.01 0.001 0.001 0.100 0.01 0.01 0.05 0.1 0.01 0.01 0.01 0.01 0.01 mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L 0.250 0.500 0.500 0.250 0.250 5.00 0.500 0.250 5.00 5.00 0.250 0.500 0.500 0.0500 0.500 -0.001 0.002 0.01 -0.0006 -0.0005 32.3 -0.006 -0.0006 0.4 3 0.2 -0.001 0.001 -0.0007 0.01 105 104 105 104 103 79 101 103 100 106 97 103 108 102 98 38-138 64-126 74-119 70-131 68-121 63-131 73-120 75-123 48-144 59-129 55-146 64-126 65-129 69-121 63-131 2 0.08 0.3 0.1 0.5 1 0.1 0.3 0.7 0.7 0.5 1 0.1 4 1 Prepared: 08/29/2007 10:03 Analyzed: 08/30/2007 12:25 30 12 11 21 12 22 10 16 23 22 19 12 10 12 24 Analyte Result Spike Source %REC RPD Flag MRL Units:;, .. Level ' Result . %REC` Limits RPD Limit Notes Mercury 0.11 u 0.20 ug/L LCS (7H29006-BS1) Prepared: 08/29/2007 10:03 Analyzed: 08/30/2007 12:28 Analyte'. Spike Source %REC RPD Result Flag MRL Units;' Level Result ✓oREC Limits RPD ` Limit Notes Mercury Matrix Spike (7H29006-MS1) Source: C711086-03 5.24 0.20 ug/L 5.00 105 85-115 Prepared: 08/29/2007 10:03 Analyzed: 08/30/2007 12:34 Analyze Result Flag MRL Spike Units Level Source %REC RPD Result %REC Limits RPD Limit Notes Mercury 5.11 0.20 ug/L 5.00 0.11 U 102 Matrix Spike Dup (7H29006-MSD1) 70-130 Prepared: 08/29/2007 10:03 Analyzed: 08/30/2007 12:37 Page 8 of 17 QUALITY CONTROL Metals by EPA 200 Series Methods - Quality Control www.encolabs.com Batch 7H29006 - EPA 7470A Matrix Spike Dup (7H29006-MSD1) Continued Source: C711086-03 Prepared: 08/29/2007 10:03 Analyzed: 08/30/2007 12:37 Analyte Spike Source . ' %REC RPD Result Flag MRL Units Level Result - ` %REC Limits RPD Limit ' Notes Mercury Post Spike (7H29006-PS1) Source: C711086-03 5.17 0.20 ug/L 5.00 0.11 U 103 70-130 11 Prepared: 08/29/2007 10:03 Analyzed: 08/30/2007 12:45 Analyte Result- Flag MRL • Units:'': Spike Source - %REC RPD Level Result %REC Limits RPD :. .Limit ;.Notes, Mercury 5.02 0.20 ulL 5.00 0.002 100 Classical Chemistry Parameters - Quality Control 0-200 Batch 7H16007 - NO PREP Blank (7H16007-BLK1) Prepared: 08/22/2007 11:47 Analyzed: 08/22/2007 12:25 Analyte Result • Flag MRL Spike Source %REC RPD Units • Level '.Result %REC Limits RPD Limit, Notes. Turbidity 0.50 u LCS (7H16007-BS1) 1.0 NTU Prepared: 08/22/2007 11:47 Analyzed: 08/22/2007 12:25 Analyte Spike ':- Source %REC RPD Result Flag MRL - Units ' > Level Result %REC '-:Limits RPD 'Limit . Notes Turbidity 21 1.0 NTU 20.0 104 Duplicate (7H16007-DUP1) Source: C712007-01 91-116 Prepared: 08/22/2007 11:47 Analyzed: 08/22/2007 12:25 Analyte Result Flag MRL Spike Units:., Level Source Result. <- %REC %REC RPD Limits RPD Limit Notes Turbidity 3.1 1.0 NT11 3.3 6 Batch 71-122005 - NO PREP Duplicate (7H22005-DUP1) Source: C711988-01 Prepared & Analyzed: 08/22/2007 09:39 25 Analyte Spike Source %REC RPD Result Flag MRL Units Level . Result %REC Limits RPD Limit Notes Total Settleable Solids Batch 7H22013 - NO PREP Blank(7H22013-BLK1) 0.11 u 0.11 mL/L 0.11 U Prepared: 08/22/2007 11:17 Analyzed: 08/23/2007 10:55 25 Analyte Spike Source %REC RPD Result Flag, MRL Units Level : Result °/aREC Limits RPD Limit Notes Total Suspended Solids 1.0 U 1.0 mg/L LCS (7H22013-BS1) Prepared: 08/22/2007 11:17 Analyzed: 08/23/2007 10:55 Analyte Spike Source %REC RPD Result Flag MRL Units Level Result %REC ' Limits RPD Limit Notes Page 9 of 17 OUALITY CONTROL Classical Chemistry Parameters - Quality Control www.encolabs.com Batch 7H22013 - NO PREP LCS (7H22013-BS1) Continued Prepared: 08/22/2007 11:17 Analyzed: 08/23/2007 10:55 Analyte Result Flag MRL Spike Units Level Source Result °/OREC %REC Limits RPD RPD Limit Notes Total Suspended Solids Duplicate (7H22013-DUP1) Source: C712219-01 89 1.0 mg/L 80.0 111 82-119 Prepared: 08/22/2007 11:17 Analyzed: 08/23/2007 10:55 Analyte Result Flag MRL Spike Source Units Level Result %REC %REC Limits RPD RP D Limit Notes Total Suspended Solids 360 Batch 7H22023 - NO PREP Blank (7H22023-BLK1) 1.0 mg/I. 360 2 Prepared: 08/22/2007 13:53 Analyzed: 08/22/2007 22:41 10 Analyte Result Flag MRL Spike Source %REC Units Level Result %REC Limits RPD RPD Limit Notes Nitrate/Nitrite as N LCS (7H22023-BS1) C.0065 u 0.10 mg/L Prepared: 08/22/2007 13:53 Analyzed: 08/22/1007 22:43 Analyte Result Flag MRL Units Spike Source Level Result %REC %REC Limits RPD RPD Limit Notes Nitrate/Nitrite as N Matrix Spike (7H22023-MS1) Source: C712264-01 1.2 0.10 mg/L 1.25 90 00-120 Prepared: 08/22/2007 13:53 Analyzed: 08/22/2007 23:34 Analyte Spike Result Flag MRL Units Level Source Result %REC %REC Limits RPD RPD Limit Notes Nitrate/Nitrite as N Matrix Spike Dup (7H22023-MSD1) Source: C712264-01 3.2 0,10 1.25 2.6 45 80-120 Prepared: 08/22/2007 13:53 Analyzed: 08/22/2007 23:37 QM-07 Analyte. Spike Source Result Flag MRL Units Level Result %REC %REC Limits RPD RPD Limit Notes Nitrate/Nitrite as N Batch 7H23006 - NO PREP Blank (7H23006-BLK1) 3.3 0.10 mg/L 1.25 2.6 52 80-120 3 Prepared: 08/23/2007 08:58 Analyzed: 08/24/2007 14:00 25 QM-07 Analyte Spike Source Result Flag MRL Units Level Result. %REC %REC Limits RPD RPD Limit Notes Total Dissolved Solids LCS (7H23006-BS1) 10 11 10 mg/L Prepared: 08/23/2007 08:58 Analyzed: 08/24/2007 14:0D Analyte Spike Source %REC Result Flag MRL Units Level Result %REC Limits RPD RPD Limit Notes Total Dissolved Solids Duplicate (7H23006-DUP1) Source: C711948-01 330 10 mg/t- 300 111 90-110 Prepared: 08/23/2007 08:58 Analyzed: 08/24/2007 14:00 Page 10 of 17 QUALITY CONTROL Classical Chemistry Parameters - Quality Control www.encolabs.com Batch 7H23006 - NO PREP Duplicate (7H23006-DUP1) Continued Source: C711948-01 Prepared: 08/23/2007 08:58 Analyzed: 08/24/2007 14:00 Analyte: Spike Source ` %REC : RPD Result Flag MRL Units - Level Result %REC Limits RPD Limit Notes Total Dissolved Solids 170 10 mg/L 160 Batch 7H23008 - NO PREP Blank(7H23008-BLK1) Prepared & Analyzed: 08/23/2007 09:34 6 10 Analyte Spike Source %REC RPD Result Flag MRL Units Level Result %REC Limits RPD Limit Notes Ammonia as N LCS (7H23008-BS1) 0.045 3 0.10 mg/L Prepared & Analyzed: 08/23/2007 09:34 Analyte Spike Source %REC RPD Result Flag MRL Units: Level Result %REC Limits RPD Limit : Notes Ammonia as N 50 0.10 mg/L 50.0 101 80-120 Matrix Spike (71123008-MS1) Source: C711850-01 Prepared & Analyzed: 08/23/2007 09:34 Ammonia a5 N Matrix Spike Dup (7H23008-MSD1) Source: C711850-01 47 0.10 mg/L 50.0 0.13 94 80.120 Prepared & Analyzed: 08/23/2007 09:34 Analyte Result ;.;' Flag MRL : Units. Spike Source . %REC RPD Level Result %REC : Limits RPD Limit Notes Ammonia as N 51 0.10 mg/L 50.0 0.13 101 80-120 Batch 7H23013 - EPA 3005A Blank (7H23013-BLK1) 7 Prepared: 08/23/2007 11:11 Analyzed: 09/04/2007 13:01 25 Analyte Spike'' Source %REC RPD Result Flag MRL Units Level Result %REC Limits RPD Limit Notes Hardness 0.10 u 0.67 mg/L Batch 7H28013 - NO PREP Blank (7H28013-BLK1) Prepared: 08/28/2007 12:44 Analyzed: 08/28/2007 15:18 Analyte Spike Source %REC RPD Result Flag MRL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity LCS (7H28013-BS1) 5.2 u 15 mg/L Prepared: 08/28/2007 12:44 Analyzed: 08/28/2007 15:19 Analyte Result , Flag MRL " 'Units Spike Source r %REC RPD Level Result %REC Limits RPD Limit Notes Total Alkalinity 88 15 mg/L 100 88 80-120 Page llof17 QUALITY CONTROL Classical Chemistry Parameters - Quality Control www.encolabs.com Batch 7H28013 - NO PREP Matrix Spike (7H28013-MS1) Source: C712066-04 Prepared: 08/28/2007 12:44 Analyzed: 08/28/2007 15:27 Total Alkalinity 220 15 mg/L 100 220 Matrix Spike Dup (7H28013-MSD1) Source: C712066-04 5 80-120 Prepared: 08/28/2007 12:44 Analyzed: 08/28/2007 15:28 QM-02 Analyte Result _ Flag MRL Spike Source %%REC RPD Level Result %REC Limits RPD Limit Notes. Total Alkalinity 220 15 mg/L 100 220 4 60.120 QUALITY CONTROL Classical Chemistry Parameters - Quality Control 0.6 25 QM-02 Batch 7H22007 - NO PREP Blank (7H22007-BLK1) Prepared: 08/22/2007 11:30 Analyzed: 08/23/2007 10:40 Analyte Spike Source %REC RPD Result Flag MRL Units Level Result %REC Limits RPD Limit Notes Phenolics 0.02 u 0.05 mg/L Blank (7H22007-BLK2) Prepared: 08/23/2007 09:46 Analyzed: 08/24/2007 05:50 Analyte'. Spike ;' Source %REC RPD Result ,., Flag MRL Units Level Result ,' %REC Limits . RPD Limit Notes Phenolics 0.02 u 0.05 mg/L LCS (7H22007-BS1) Prepared: 08/22/2007 11:30 Analyzed: 08/23/2007 10:40 Analyte, Result ' Flag Spike Source %REC RPD MRL Units Level Result %REC. Limits RPD Limit Notes Phenolics LCS(7H22007-BS2) 0.47 0.05 mg/L 0.500 94 79-104 Prepared: 08/23/2007 09:46 Analyzed: 08/24/2007 05:50 Analyte Spike Source %REC RPD Result Flag. MRL Units Level Result %RECLimits RPD Limit Notes Phenolics 0.48 Matrix Spike (7H22007-MS1) Source: A704126-06 0.05 mg/L 0.500 96 79-104 Prepared: 08/22/2007 11:30 Analyzed: 08/23/2007 10:40 Analyte Spike Source %REC RPD Result Flag MRL Units, Level Result %REC Limits RPD Limit Notes Phenolics Matrix Spike Dup (7H22007-MSD1) Source: A704126-06 0.45 0.05 mg/L 0.500 0.02 U 90 79-104 Prepared: 08/22/2007 11:30 Analyzed: 08/23/2007 10:40 Analyte Spike Source 0/6REC RPD Result Flag MRL Units Level Result %REC limits RPD Limit Notes Phenolics 0.46 0.05 mg/L 0.500 0.02 u 92 79-104 2 10 Page 12 of 17 QUALITY CONTROL Classical Chemistry Parameters - Quality Control www.encolabs.com Batch 7H27020 - NO PREP Blank (7H27020-BLK1) Prepared: 08/27/2007 12:40 Analyzed: 08/28/2007 10:08 Analyte Result Flag MRL Units Spike Source %REC RPD Level ` Result %REC Limits RPD Limit Notes Total Kjeldahl Nitrogen LCS(7H27020-B51) 0.043 U 0.050 mg/L Prepared: 08/27/2007 12:40 Analyzed: 08/28/2007 10:09 Analyte Total Kjeldahl Nitrogen Spike Source %REC RPD Result Flag : MRL Units ;;'Level Result %REC Limits RPD Limit Notes 2.5 0.050 mg/L 2.50 99 86-108 Matrix Spike (7H27020-MS1) Source: A704528-01 Prepared: 08/27/2007 12:40 Analyzed: 08/28/2007 10:12 Analyte Total Kjeldahl Nitrogen Matrix Spike Dup (7H27020-M5D1) Source: A704528-01 'Result Flag `.'MRL 4.6 0.050 mg/L Spike Source %REC RPD Level Result %REC Limits RPD Limit Notes 2.1 86-108 Prepared: 08/27/2007 12:40 Analyzed: 08/28/2007 10:13 Analyte Total Kjeldahl Nitrogen Spike Source %REC RPD Result Flag MRL Units ,'> Level Result %REC Limits RPD Limit Notes 86-108 1 14 4.5 0.050 mg/L 2.1 Batch 7H27021 - NO PREP Blank (7H27021-BLK1) Prepared: 08/27/2007 12:42 Analyzed: 08/28/2007 14:03 Analyte Spike Source 0/ABC RPD Result Flag MRL Units Level Result %REC Limits RPD Limit Notes Phosphorus LCS(7H27021-BS1) 0.020 U 0.030 mg/L Prepared: 08/27/2007 12:42 Analyzed: 08/28/2007 14:04 Analyte Phosphorus Matrix Spike (7H27021-MS1) Source: A704528-01 Result 2.5 Spike Source %REC RPD Flag MRL Units Level Result %REC Limits RPD Limit Notes 0.030 mg/L 2.50 99 89-107 Prepared: 08/27/2007 12:42 Analyzed: 08/28/2007 14:06 Analyte Phosphorus Matrix Spike Dup (7H27021-MSD1) Source: A704528.01 Result Flag MRL, Units. Spike Source %REC RPD Level Result %REC Limits RPD Limit Notes 3.3 0.030 mg/L 2.50 0.80 98 89-107 ... ........ Prepared: 08/27/2007 12:42 Analyzed: 08/28/2007 14:07 Analyte Phosphorus Spike Source %REC RPD Result Flag c MRL Units ..,Level c Result %REC Limits RPD Limit Notes 3.3 0.030 mg/L 2.50 0.80 100 89-107 1 10 Batch 7H28002 - NO PREP Blank (7H28002-BLK1) Prepared: 08/28/2007 11:34 Analyzed: 08/28/2007 20:50 Page 13 of 17 QUALITY CONTROL Classical Chemistry Parameters - Quality Control www.encolabs.com Batch 7H28002 - NO PREP Blank (7H28002-BLK1) Continued Prepared: 08/28/2007 11:34 Analyzed: 08/28/2007 20:50 Analyte Spike Source %REC RPD Result Flag MRL Units Level Result %REC Limits RPD Limit Notes Cyanide (total) 0.018 u 0.040 mg/L Blank (7H28002-BLK2) Prepared: 08/28/2007 12:48 Analyzed: 08/28/2007 20:50 Analyte Spike Source %REC RPD Result Flag MRL Units Level Result %REC Limits RPD Limit Notes Cyanide (total) LCS (7H28002-BS1) 0.018 U 0.040 mg/L Prepared: 08/28/2007 11:34 Analyzed: 08/28/2007 20:50 Analyte Spike Source %REC RPD Result Flag MRL Units Level Result %REC Limits. RPD Limit Notes Cyanide (total) LCS (7H28002-B52) 0.20 0.0.10 mg/L 0.2C0 59 84-113 Prepared: 08/28/2007 12:48 Analyzed: 08/28/2007 20:50 Analyte Spike Source %REC RPD Result Flag MRL Units Level Result.. . %REC Limits RPD Limit Notes Cyanide (total) Matrix Spike (7H28002-MS1) Source: A704744-01 0.22 0.0,10 mg/L 0.200 109 84-113 Prepared: 08/28/2007 11:34 Analyzed: 08/28/2007 20:50 Analyte Spike Source %REC RPD Result Flag MRL Units Level Result %REC Limits RPD Limit Notes Cyanide (total) 0.22 0.0,10 mg/L Matrix Spike Dup (7H28002-MSD1) Source: A704744-01 0.200 0.01E U 110 84-113 Prepared: 08/28/2007 11:34 Analyzed: 08/28/2007 20:50 Analyte - Spike Source %REC RPD Result Flag MRL Units Level Result %REC Limits RPD Limit Notes Cyanide (total) 0.22 Batch 7108003 - NA Blank (7I08003-BLK1) 0.000 mg/L 0.200 0.018 U 108 84-113 2 Prepared: 09/08/2007 11:34 Analyzed: 09/08/2007 12:31 10 Analyte Spike Source %REC RPD Result Flag MRL Units Level Result %REC Limits RPD Limit Notes Fluoride LCS (7108003-BS1) 0.05 U 0.10 mg/L Prepared: 09/08/2007 11:34 Analyzed: 09/08/2007 12:49 Analyte Spike Source %REC RPD Result Flag MRL Units Level Result %REC Limits RPD Limit Notes Fluoride Matrix Spike (7108003-MS1) Source: A704340-01 5.1 0.10 mg/L 5.00 102 81-117 Prepared: 09/08/2007 11:34 Analyzed: 09/08/2007 13:07 Analyte Spike Source %REC RPD Result Flag MRL Units Level Result %REC Limits RPD Limit Notes Hum ide 5.0 0.10 mg/L 5.10 0.05 U 99 81-117 Page 14 of 17 OUALITY CONTROL, Classical Chemistry Parameters - Quality Control www.encolabs.com Batch 7108003 - NA Matrix Spike Dup (7108003-MSD1) Source: A704340-01 Prepared: 09/08/2007 11:34 Analyzed: 09/08/2007 13:25 Fluoride 4.9 0.10 5.10 0.05 U 97 81-117 2 16 Page 15 of 17 FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. QM-02 The RPD and/or percent recovery for this QC spike sample cannot be accurately calculated due to the high concentration of analyte inherent in the sample. QM-07 The spike recovery was outside acceptance limits for the MS and/or MSD. The batch was accepted based on acceptable LCS recovery. 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