WQ0012948_More Information (Received)_20200708

BROOKS
ENGINEERING ASSOCIATES
17 Arlington Street / Asheville NC 2=1 / www.hrooksea.com / 828-232-4700
Letter of Transmittal
To:
From:
Date:
NCDEQ
Mark Brooks, PE
July 8, 2020
Division of Water Resources
Non -Discharge Permitting
cc: (need telej�hone no. if Fedex, no P.O. Box)
1617 Mail Service Center
Electronic CC:
Raleigh, NC 27699-1617
Jeff Cole, Engineering
Attn: Erick Saunders
NC Wildlife Resources Commission
Division of Engineering & Lands Management
need telephone no. if Fedex, no P.O. Box
1720 Mail Service Center
Raleigh, NC 27699-1720
Project Name
Pisgah Education Center WWTP Upgrade
WQ0012948
BEA Project No:
502819
® Mail ❑ Deliver ❑ Overnight* ❑ Other: v
*must use street address & include phone number
Document Description:
Date:
Copies:
Cover Letter
7-8-20
2 Paper
copies
WWIS-06-16 Application Revised
7-8-20
2 Paper
copies
Revised Specifications
7-8-20
2 Paper
copies
Revised Calculations
7-8-20
2 Paper
copies
Revised Engineering Drawings 24x36
7-8-20
2 Paper
copies
Comments:
17 Arlington Street, Asheville, NC 28801 • Phone [phone] • Fax [phone]

Planning & Project Management / Civil Engineering
Surveying / Environmental Engineering & Services
BROOKS17 Arlington Street / Asheville NC 28801
EN GINEERI N G ASSOCIATES www.brooksea.com / 828-232-4700
JULY 7, 2020
NC DEQ Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
Attention: Erick Saunders, Engineer
Regarding: Pisgah Wildlife Education Center — Wastewater System Upgrade
Transylvania County
Application No. WQ0012948
BEA Project No. 502819
Response to Additional Information Request
Dear Mr. Saunders:
On behalf of the Pisgah Wildlife Education Center, we are submitting the following revised
information for your review. Additional information was requested in a June, 2020 letter from
your office. Below are the comments/requests from various reviewers. Our responses are below
the comments in bold. Revised Plans and application are enclosed.
A. Application:
1. It is mentioned in section V.5. of the Wastewater Irrigation System application
form (FORM: WWIS 06-16)that automatically activated standby power onsite
capable of power all essential treatment units would be provided under design
conditions in accordance with 15A NCAC 02T .0505(1). The cover letter
mentions that this would be addressed with a backup generator, and the Power
Reliability Plan in the preliminary Operation and Maintenance Manual states
that a backup generator and automatic transfer switch is currently employed at
the system. However, the current permit does not include this generator in the
facility description, nor are the auxiliary power permit conditions included in
the permit issued December 10, 2019.The equipment information in V.I I.h. do
not propose any specifications for an "Auxiliary Generator", the engineering
plans do not depict this generator, and the specifications do not mention the
installation of one. Please provide information regarding this backup generator
that meets the requirements of 15A NCAC 02T.0505(1)so that it may be
incorporated into the permit.
The backup power at the facility is a facility -wide backup generator with capacity for
the wastewater treatment system. This generator has been part of the facility
construction since its inception. As this is not new or specified by myself, I did not
include it on the application. The location and size of the backup generator are
depicted on revised Sheet N-1.1. It is my understanding the 49 kW generator (with

ATS) has the ability to power all functions of the wastewater treatment system during
a power outage and therefore meets the requirements of 15A NCAC 02T.0505(1)
2. The WWIS 06-16 form was signed by Gary Gardner, the Engineering Section
Chief. According to 15ANCAC 02T .0106(a)(4), the application shall be signed
by either an executive officer, elected official in the highest level of elected
office, or other authorized employee in the case of a municipal, state, or public
entity. The attached signature authority delegation letter shall be signed in
accordance with 15A NCACO2T. 0 106(d) to authorize Mr. Gardner to sign this
permit application on behalf of the North Carolina Wildlife Resources
Commission. Alternatively, the WWIS 06-16form shall be signed by a signature
authority and resubmitted. On file, we have Melinda Patterson, the Center
Director as having signature authority
A revised application is enclosed with Ms. Patterson's signature.
B. Engineering Plans:
1. See Item A.I. Please provide location and detail of this generator and automatic
transfer switch and show the connections to treatment units that use it as an
auxiliary power source.
The location and size of the generator and ATS is shown on the revised plans.
2. The facility description of the previous permit mentions a 4,000 gallon baffled
septic tank that is not depicted in the engineering plans. Please provide updated
plans with the location of this septic tank and associating piping and
appurtenances, or clarify its omission.
I would assume that is referring to the 4,000 gallon recirculation tank
identified on Sheet N-1.1? As BEA was not involved in the original permitting,
we are not sure what this refers to. The existing tankage and system layout
depicted on Sheet 1.1 in the engineering plan submittals is based on the
original plans from McGill Associates. These depict a 4,000 gallon tank, the
recirculation tank, but the detail for this tank does not depict that as having a
baffle. There is also a 5,000 gallon septic tank with a baffle wall depicted in
the original plans by McGill Associates. Perhaps that is what is referenced?
However, please understand there are no changes proposed to the existing
tankage, just a pump replacement in the recirculation tank and replacement
of the sand filter with the enclosed media filter.
3. The facility description of the previous permit mentions a tablet chlorinator that
is not depicted in the engineering plans. Please provide updated plans with the
location of this tablet chlorinator and associating piping and appurtenances, or
clarify its omission.

The tablet chlorinator is located inside the 4,000 gallon reuse water and
wetland dose tank identified as Keynote 13 on Sheet N-1.2. This has been
added to the revised Sheet N-1.2
C. Engineering Calculations:
1. Both the plans and the specifications reference an EZ-Treat Model 4L Filter
media pod as the chosen fixed media pods. Sizing for these units appears to be
based on manufacturer and NSF Certification data which specify removal rates
of biological oxygen demand (BOD), total nitrogen (TN), and total suspended
solids (TSS) at certain loading rates. However, I cannot find any manufacturer's
information for the Model 4L filter which would support these removal rates.
Please provide the manufacturer and NSF data that support these sizing and
removal rate calculations.
Based on closer review of the organic an hydraulic loading rates, the plans
have been revised to incorporate two of the EZ Treat 5L model. The 5 L
model is rated for 4119 gpd. Enclosed are the NSF 350 and 245 Certification
for the Model 600 and Model 1200 units. Also enclosed is the "scale up"
certification for the other larger units. All of the EZ Treat units (Models 600,
1200, 3L-6L) are rated for hydraulic loading of 29.9 gpd/sf with typical
domestic strength wastewater. The revised organic loading rate calculations
are provided in the revised Calculations Also enclosed are revised Application
and Specifications to reflect the change to 5L units.
2. Section 3.2 "Media Pod Dosing System" of the specifications specify a Sta-Rite
Model STEP 50 1.0 HP 3-stage 230 V pump. Please provide a pump
performance curve for this pump.
Pump selection and configuration has been revised for the 5L model EZ Treat
system. Two duplex system are now proposed (two pumps per pod) with the
Sta-Rite 30 gpm model. The pump cut sheets and pump curve are provided in
the revised Specifications as a Product Submittal Sheet (Section 6).
D. Power Reliability Plan:
1. See A.1. Provide the technical specifications of the referenced generator.
The revised plans include the location and size of the existing backup
generator. The generator is a 49kW 240V backup generator with an automatic
transfer switch. We have been told the WWTP was taken into consideration
when sizing the generator and the breaker panel for the WWTP are on the
generator. This information has been added to the Power Reliability Plan.

We appreciate your review of these project submittals. Feel free to call or email to discuss any
of these responses. We look forward to working with you on this project.
Sincerely,
Brooks Engineering Associates, P.A.
Mark C. Brooks, P.E.
CC: Jeff Cole, NC Wildlife Resources Commission
Enclosures: Revised WWIS 06-16
Revised Engineering Plans
Revised Specifications
Revised Calculations
EZ Treat NSF Certifications

ES
NSF International
March 8, 2017
Mr. Michael Stidham
E-Z Treat Systems, LLC
1700 Davis St
Rocky Mount, NC 27803
Re: NSF/ANSI Standard 40, 235 & 350 —E-Z Treat 3L, 4L, 5L and 6L Scale Up
NSF Project 10058497
Dear Michael,
We have completed the review of the proposed E-Z Treat 3L (2426 gpd), 4L (3273 gpd), 5L (4119 gpd) and the
6L (5000 gpd) Wastewater Treatment Unit models. However these units fall outside the scope of NSF Standard
40, 245 and 350. The key elements of the review included:
➢ Determining whether the requirements of NSF/ANSI Standard 40 (2013) will continue to be met.
➢ Determining whether the requirements of NSF/ANSI Standard 245 (2013) will continue to be met.
➢ Determining whether the requirements of NSF/ANSI Standard 350 (2017) will continue to be met.
➢ Determining whether the requirements of the NSF Certification Policies for Wastewater Treatment
Devices will continue to be met.
Based on this review NSF has determined that E-Z Treat has demonstrated above noted proposal that they have
followed the principals of proportionality of scale up, as required in NSF/ANSI Standards 40, 245, and 350.
However, these models 3L, 4L, 5L and 6L fall outside the scope of Standard 40, 245 & Standard 350 and cannot
be NSF certified because of this limitation within these standards.
If you have any questions, please do not hesitate to contact me.
Sincerely,
Sharon Steiner 734-827-6846 (phone)
Business Unit Manager 734-827-7790 (fax)
Wastewater Treatment Unit Program steiner&nsf.org (email)
cc: product specs (C0173848)
P.O. Box 130140 Ann Arbor, MI 48113-0140 USA
734-769-8010 1-800-NSF-MARK Fax [phone]
E-Mail: info@nsforg Web:http://www.nsf.org

0 NSF International
OFFICIAL LISTING
VSF International Certifies that the products appearing on this Listing conform to the requirements of
NSF/ANSI Standard 245 - Wastewater Treatment Systems - Nitrogen Reduction
This is the Official Listing recorded on December 18, 2015.
E-Z Treat
P.O. Box 176
Haymarket, VA 20618
703-753-4770
Facility: Rocky Mount, NC
Model Number
#600
#1200
Rated
Capacity
Gallons/Day
600
1200
Note: Additions shall not be made to this document without prior evaluation and acceptance by NSF International.
1 of 1
C0173848
789 N. Dixboro Road, Ann Arbor, Michigan 48105-9723 USA
1-800-NSF-MARK / 734-769-8010
www.nsf.org

0 NSF International
OFFICIAL LISTING
VSF International Certifies that the products appearing on this Listing conform to the requirements of
NSF/ANSI Standard 350 - Onsite Residential and Commercial Water Reuse Treatment Systems
This is the Official Listing recorded on December 18, 2015.
E-Z Treat
P.O. Box 176
Haymarket, VA 20618
703-753-4770
Facility: Rocky Mount, NC
Rated
Capacity
Model Number Gallons/Day Classification Type
4600 600 Class R Wastewater
#1200 1200 Class R Wastewater
NOTE: Class R - Single family residential dwellings
Note: Additions shall not be made to this document without prior evaluation and acceptance by NSF International.
1 of 1
C0173848
789 N. Dixboro Road, Ann Arbor, Michigan 48105-9723 USA
1-800-NSF-MARK / 734-769-8010
www.nsf.org

State of North Carolina
DWR
Department of Environmental Quality
Division of Water Resources
15A NCAC 02T .0500 — WASTEWATER IRRIGATION SYSTEMS
Division of Water Resources INSTRUCTIONS FOR FORM: WWIS 06-16 & SUPPORTING DOCUMENTATION
Plans, specifications and supporting documents shall be prepared in accordance with 15A NCAC 02H .0400 (if necessary), 15A
NCAC 02L .0100, 15A NCAC 02T .0100, 15A NCAC 02T .0700, Division Policies and good engineering practices. Failure to
submit all required items will necessitate additional processing and review time.
For more information, visit the Water Quality Permitting Section's Non -Discharge Permitting Unit website
General — When submitting an application to the Water Quality Permitting Section's Non -Discharge Permitting Unit, please use the
following instructions as a checklist in order to ensure all required items are submitted. Adherence to these instructions and checking
the provided boxes will help produce a quicker review time and reduce the amount of requested additional information.
Unless otherwise noted, the Applicant shall submit one original and two copies of the application and supporting documentation.
A. Cover Letter (All Application Packages):
® List all items included in the application package, as well as a brief description of the requested permitting action.
B. Application Fee (All New and Major Modification Application Packages):
❑ Submit a check, money order or electronic funds transfer made payable to: North Carolina Department of Environmental
Quality (NCDEQ). The appropriate fee amount for new and major modification applications may be found at: Standard Review
Project Fees.
C. Wastewater Irrigation Systems (FORM: WWIS 06-16) Application (All Application Packages):
® Submit the completed and appropriately executed Wastewater Irrigation Systems (FORM: WWIS 06-16) application. Any
unauthorized content changes to this form shall result in the application package being returned. If necessary for clarity or due
to space restrictions, attachments to the application may be made, as long as the attachments are numbered to correspond to the
section and item to which they refer.
❑ If the Applicant Type in Item I.2. is a corporation or company, provide documentation it is registered for business with the
North Carolina Secretary of State.
❑ If the Applicant Type in Item I.2. is a partnership or d/b/a, enclose a copy of the certificate filed with the Register of Deeds in
the county of business.
❑ The facility name in Item II.1. shall be consistent with the facility name on the plans, specifications, agreements, etc.
® The Professional Engineer's Certification on Page 12 of the application shall be signed, sealed and dated by a North Carolina
licensed Professional Engineer.
® The Applicant's Certification on Page 12 of the application shall be signed in accordance with 15A NCAC 02T .0106(b). Per
15A NCAC 02T .0106(c), an alternate person may be designated as the signing official if a delegation letter is provided from
a person who meets the criteria in 15A NCAC 02T .0106(b).
❑ If this project is for a renewal without modification, use the Non -Discharge System Renewal (FORM: NDSR) application.
D. Property Ownership Documentation (All Application Packages):
➢ Per 15A NCAC 02T .0504(f), the Applicant shall demonstrate they are the owner of all property containing the wastewater
treatment, storage and irrigation facilities:
❑ Legal documentation of ownership (i.e., GIS, deed or article of incorporation), or
❑ Written notarized intent to purchase agreement signed by both parties with a plat or survey map, or
❑ Written notarized lease agreement that specifically indicates the intended use of the property and has been signed by both
parties, as well as a plat or survey map. Lease agreements shall adhere to the requirements of 15A NCAC 02L .0107.
® Provide all agreements, easements, setback waivers, etc. that have a direct impact on the wastewater treatment, conveyance,
storage and irrigation facilities.
INSTRUCTIONS FOR FORM: WWIS 06-16 & SUPPORTING DOCUMENTATION Page 1 of 6

E. Soil Evaluation (All Application Packages that include new irrigation sites):
❑ Per 15A NCAC 02T .0504(b) and the Soil Scientist Evaluation Policy, submit a detailed soil evaluation that has been signed,
sealed and dated by a North Carolina Licensed Soil Scientist and includes at a minimum:
❑ The report shall identify all the sites/fields with project name, location, and include a statement that the sites/fields were
recommended for the proposed land application activity.
❑ Field delineated detailed soils map meeting all of the requirements of the Soil Scientist Evaluation Policy.
❑ Soil profile descriptions meeting all of the requirements of the Soil Scientist Evaluation Policy.
❑ Provide all soil boring logs performed at the site.
❑ Standard soil fertility analysis conducted no more than one year prior to permit application for each map unit in the soil
map legend for the following parameters:
❑ Acidity ❑ Exchangeable sodium percentage (by calculation) ❑ Phosphorus
❑ Base saturation (by calculation) ❑ Magnesium ❑ Potassium
❑ Calcium ❑ Manganese ❑ Sodium
❑ Cation exchange capacity ❑ Percent humic matter ❑ Zinc
❑ Copper ❑ pH
➢ Saturated hydraulic conductivity (KSAT) data that shall include at a minimum:
❑ A minimum of three KSAT tests shall be conducted in the most restrictive horizon for each soil series in the soil map.
❑ All KSAT tests shall be conducted in areas representative of the site.
❑ All KSAT tests shall be run until steady-state equilibrium has been achieved.
❑ All collected KSAT data shall be submitted, including copies of field worksheets showing all collected readings.
❑ Submit a soil profile description for each KSAT data point that shall extend at least one foot below the tested horizon.
➢ Soil evaluation recommendations shall include at a minimum:
❑ A brief summary of each map unit and its composition and identification of minor contrasting soils.
❑ Maximum irrigation precipitation rate (in/hr) for each soil/map unit within the proposed irrigation areas.
❑ Seasonal irrigation restrictions, if appropriate.
❑ Identification of areas not suitable for wastewater irrigation.
❑ Recommended geometric mean KSAT rate to be used in the water balance for each soil/map unit based upon in -situ
measurement of the saturated hydraulic conductivity from the most restrictive horizon.
❑ Recommended drainage coefficient to be used in the water balance based upon comprehensive site evaluation, review
of collected onsite data, minor amounts of contrasting soils and the nature of the wastewater to be applied.
❑ Recommended annual hydraulic loading rate (in/yr) for each soil/map unit within the proposed irrigation areas based
upon in -situ KSAT measurements form the most restrictive soil horizon.
NOTE — If the soil evaluation was performed more than one year prior to the submittal of this application package, a statement shall
be included indicating that the site has not changed since the original investigation.
F. Agronomist Evaluation (All Application Packages that include new irrigation sites or new crops for existing irrigation sites):
❑ Per 15A NCAC 02T .0504(i), submit an agronomist evaluation that has been signed, sealed and dated by a qualified professional
and includes at a minimum:
❑ Proposed nutrient uptake values for each cover crop based upon each field's dominant soil series and percent slope.
❑ Plant available nitrogen calculations for each cover crop using the designed effluent concentrations in Application Item
V.1. and proposed mineralization and volatilization rates.
❑ Historical site consideration, soil binding and plant uptake of phosphorus.
❑ Seasonal irrigation restrictions, if appropriate.
❑ A clear and reproducible map showing all areas investigated and their relation to proposed fields and crops.
❑ Maintenance and management plan for all specified crops.
INSTRUCTIONS FOR FORM: WWIS 06-16 & SUPPORTING DOCUMENTATION Page 2 of 6

G. Hydrogeologic Report (All Application Packages treating industrial waste or having a design flow over 25,000 GPD):
❑ Per 15A NCAC 02T .0504(e), the Hydrogeologic Investigation and Reporting Policy, the Groundwater Modeling Policy and
the Performance and Analysis of Aquifer Slug Tests and Pumping Tests Policy, submit a detailed hydrogeologic description
that has been signed, sealed and dated by a qualified professional and includes at a minimum:
❑ A hydrogeologic description to a depth of 20 feet below land surface or bedrock, whichever is less. A greater depth of
investigation is required if the respective depth is used in predictive calculations.
❑ Representative borings within the irrigation areas and all proposed earthen impoundments.
❑ A description of the regional and local geology and hydrogeology.
❑ A description, based on field observations of the site, of the site topographic setting, streams, springs and other groundwater
discharge features, drainage features, existing and abandoned wells, rock outcrops, and other features that may affect the
movement of the contaminant plume and treated wastewater.
❑ Changes in lithology underlying the site.
❑ Depth to bedrock and occurrence of any rock outcrops.
❑ The hydraulic conductivity and transmissivity of the affected aquifer(s).
❑ Depth to the seasonal high water table (SHWT).
❑ A discussion of the relationship between the affected aquifers of the site to local and regional geologic and hydrogeologic
features.
❑ A discussion of the groundwater flow regime of the site prior to operation of the proposed facility and post operation of
the proposed facility focusing on the relationship of the system to groundwater receptors, groundwater discharge features,
and groundwater flow media.
❑ If the SHWT is within six feet of the surface, a mounding analysis to predict the level of the SHWT after wastewater
application.
H. Water Balance (All Application Packages that include new or modified irrigation sites, changes in flow or changes in storage):
❑ Per 15A NCAC 02T .0504(k) and the Water Balance Calculation Policy, submit a water balance that has been signed, sealed
and dated by a qualified professional and includes at a minimum:
❑ At least a two-year iteration of data computation that considers precipitation into and evaporation from all open atmosphere
storage impoundments, and uses a variable number of days per month.
❑ Precipitation based on the 80r' percentile and a minimum of 30 years of observed data.
❑ Potential Evapotranspiration (PET) using the Thomthwaite method, or another approved methodology, using a minimum
of 30 years of observed temperature data.
❑ Soil drainage based on the geometric mean of the in -situ KswT tests in the most restrictive horizon and a drainage coefficient
ranging from 4 to 10% (unless otherwise technically documented).
➢ Other factors that may restrict the hydraulic loading rate when determining a water balance include:
❑ Depth to the SHWT and groundwater lateral movement that may result in groundwater mounding.
❑ Nutrient limitations and seasonal application times to ensure wastewater irrigation does not exceed agronomic rates.
❑ Crop management activities resulting in cessation of irrigation for crop removal.
NOTE — Wastewater Irrigation Systems serving residential facilities shall have a minimum of 14 days of wet weather storage.
I. Engineering Plans (All Application Packages):
® Per 15A NCAC 02T .0504(c)(1), submit standard size and 11 x 17-inch plan sets that have been signed, sealed and dated by a
North Carolina licensed Professional Engineer, and shall include at a minimum:
® Table of contents with each sheet numbered.
® A general location map with at least two geographic references and a vicinity map.
❑ A process and instrumentation diagram showing all flow, recycle/return, aeration, chemical, electrical and wasting paths.
® Plan and profile views of all treatment and storage units, including their piping, valves, and equipment (i.e., pumps,
blowers, mixers, diffusers, flow meters, etc.), as well as their dimensions and elevations.
® Details of all piping, valves, pumps, blowers, mixers, diffusers, recording devices, fencing, auxiliary power, etc.
® A hydraulic profile from the treatment plant headworks to the highest irrigation point.
❑ The irrigation area with an overlay of the suitable irrigation areas depicted in the Soil Evaluation.
❑ Each nozzle/emitter and their wetted area influence, and each irrigation zone labeled as it will be operated.
❑ Locations within the irrigation system of air releases, drains, control valves, highest irrigation nozzle/emitter, etc.
❑ For automated irrigation systems, provide the location and details of the precipitation/soil moisture sensor.
® Plans shall represent a completed design and not be labeled with preliminary phrases (e.g., FOR REVIEW ONLY, NOT
FOR CONSTRUCTION, etc.) that indicate they are anything other than final specifications. However, the plans may be
labeled with the phrase: FINAL DESIGN - NOT RELEASED FOR CONSTRUCTION.
INSTRUCTIONS FOR FORM: WWIS 06-16 & SUPPORTING DOCUMENTATION Page 3 of 6

Specifications (All Application Packages):
® Per 15A NCAC 02T .0504(c)(2), submit specifications that have been signed, sealed and dated by a North Carolina licensed
Professional En ie neer, and shall include at a minimum:
® Table of contents with each section/page numbered.
® Detailed specifications for each treatment/storage/irrigation unit, as well as all piping, valves, equipment (i.e., pumps,
blowers, mixers, diffusers, flow meters, etc.), nozzles/emitters, precipitation/soil moisture sensor (if applicable),
audible/visual high water alarms, liner material, etc.
® Site Work (i.e., earthwork, clearing, grubbing, excavation, trenching, backfilling, compacting, fencing, seeding, etc.)
® Materials (i.e., concrete, masonry, steel, painting, method of construction, etc.)
® Electrical (i.e., control panels, transfer switches, automatically activated standby power source, etc.)
® Means for ensuring quality and integrity of the finished product, including leakage, pressure and liner testing.
® Specifications shall represent a completed design and not be labeled with preliminary phrases (e.g., FOR REVIEW ONLY,
NOT FOR CONSTRUCTION, etc.) that indicate they are anything other than final specifications. However, the
specifications may be labeled with the phrase: FINAL DESIGN - NOT RELEASED FOR CONSTRUCTION.
K. Engineering Calculations (All Application Packages):
® Per 15A NCAC 02T .0504(c)(3), submit engineering calculations that have been signed, sealed and dated by a North Carolina
licensed Professional Engineer, and shall include at a minimum:
® Hydraulic and pollutant loading calculations for each treatment unit demonstrating how the designed effluent
concentrations in Application Item V.I. were determined.
® Sizing criteria for each treatment unit and associated equipment (i.e., blowers, mixers, flow meters, pumps, etc.).
® Total and effective storage calculations for each storage unit.
® Friction/total dynamic head calculations and system curve analysis for each pump used.
® Manufacturer's information for all treatment units, pumps, blowers, mixers, diffusers, flow meters, irrigation system, etc.
® Flotation calculations for all treatment and storage units constructed partially or entirely below grade.
❑ A demonstration that the designed maximum precipitation and annual loading rates do not exceed the recommended rates.
❑ A demonstration that the specified auxiliary power source is capable of powering all essential treatment units.
L. Site Map (All Application Packages):
® Per 15A NCAC 02T .0504(d), submit standard size and 11 x 17-inch site maps that have been signed, sealed and dated by a
North Carolina licensed Professional Engineer and/or Professional Land Surveyor, and shall include at a minimum:
® A scaled map of the site with topographic contour intervals not exceeding 10 feet or 25 percent of total site relief and
showing all facility -related structures and fences within the wastewater treatment, storage and irrigation areas.
❑ Soil mapping units shown on all irrigation sites.
® The location of all wells (including usage and construction details if available), streams (ephemeral, intermittent, and
perennial), springs, lakes, ponds, and other surface drainage features within 500 feet of all wastewater treatment, storage
and irrigation sites.
❑ Delineation of the compliance and review boundaries per 15A NCAC 02L .0107 and .0108, and 15A NCAC 02T .0506(c)
if applicable.
® Setbacks as required by 15A NCAC 02T .0506.
® Site property boundaries within 500 feet of all wastewater treatment, storage and irrigation sites.
® All habitable residences or places of public assembly within 500 feet of all treatment, storage and irrigation sites.
NOTE — For clarity, multiple site maps of the facility with cut sheet annotations may be submitted.
M. Power Reliability Plan (All Application Packages):
® Per 15A NCAC 02T .0505(1), submit documentation of power reliability that shall consist of at a minimum:
® An automatically activated standby power supply onsite that is capable of powering all essential treatment units under
design conditions, OR
➢ Approval from the Director that the facility:
❑ Serves a private water distribution system that has automatic shut-off during power failures and has no elevated water
storage tanks,
❑ Has sufficient storage capacity that no potential for overflow exists, and
❑ Can tolerate septic wastewater due to prolonged detention.
INSTRUCTIONS FOR FORM: WWIS 06-16 & SUPPORTING DOCUMENTATION Page 4 of 6

N. Operation and Maintenance Plan (All Application Packages):
® Per 15A NCAC 02T .0507, submit an operation and maintenance (O&M) plan encompassing all wastewater treatment, storage
and irrigation systems that shall include at a minimum a description of:
® Operation of the wastewater treatment, storage and irrigation systems in sufficient detail to show what operations are
necessary for the system to function and by whom the functions are to be conducted.
® Anticipated maintenance of the wastewater treatment, storage and irrigation systems.
® Safety measures, including restriction of access to the site and equipment.
® Spill prevention provisions such as response to upsets and bypasses, including how to control, contain and remediate.
® Contact information for plant personnel, emergency responders and regulatory agencies.
NOTE — A final O&M Plan shall be submitted with the partial and/or final Engineering Certification required under 15A NCAC
02T .0116, however, a preliminary O&M Plan shall be submitted with each application package.
O. Residuals Management Plan (All Application Packages with new, expanding or replacement wastewater treatment systems):
® Per 15A NCAC 02T .0504(i) and .0508, submit a Residuals Management Plan that shall include at a minimum:
® A detailed explanation of how generated residuals (including trash, sediment and grit) will be collected, handled, processed,
stored, treated, and disposed.
® An evaluation of the treatment facility's residuals storage requirements based upon the maximum anticipated residuals
production rate and ability to remove residuals.
❑ A permit for residuals utilization or a written commitment to the Applicant from a Permittee of a Department approved
residuals disposal/utilization program that has adequate permitted capacity to accept the residuals or has submitted a
residuals/utilization program application.
❑ If oil/grease removal and collection are a designed unit process, submit an oil/grease disposal plan detailing how the
oil/grease will be collected, handled, processed, stored and disposed.
NOTE — Per 15A NCAC 02T .0505(o), a minimum of 30 days of residual storage shall be provided.
NOTE — Per 15A NCAC 02T .0504(i), a written commitment to the Applicant from a Permittee of a Department approved residuals
disposal/utilization program is not required at the time of this application, however, it shall be provided prior to operation of any
permitted facilities herein.
NOTE — If an on -site restaurant or other business with food preparation is contributing wastewater to this system, an oil/grease
disposal plan shall be submitted.
P. Additional Documentation:
➢ Certificate of Public Convenience and Necessity (All Application Packages for Privately -Owned Public Utilities):
❑ Per 15A NCAC 02T .0I 15(a)(1) and .0504 , provide the Certificate of Public Convenience and Necessity from the North
Carolina Utilities Commission demonstrating the Applicant is authorized to hold the utility franchise for the area to be
served by the wastewater treatment and irrigation system, or
❑ Provide a letter from the North Carolina Utilities Commission's Water and Sewer Division Public Staff stating an
application for a franchise has been received and that the service area is contiguous to an existing franchised area or that
franchise approval is expected.
➢ Existing Permit (All Modification Packages):
® Submit the most recently issued existing permit.
❑ Provide a list of any items within the permit the Applicant would like the Division to address during the permit modification
(i.e., compliance schedules, permit description, monitoring, permit conditions, etc.).
➢ Final Environmental Document (All Application Packages using public monies or lands subject to the North Carolina
Environmental Policy Act under 15A NCAC 01 C .0100 to .0400):
❑ Per 15A NCAC 02T .0105(c)(4), submit one copy of the environmental assessment and three copies of the final
environmental document (i.e., Finding of No Significant Impact or Record of Decision).
❑ Include information on any mitigating factors from the Environmental Assessment that impact the design and/or
construction of the wastewater treatment and irrigation system.
➢ Floodway Regulation Compliance (All Application Packages where any portion of the wastewater treatment, storage and
irrigation system is located within the 100-year floodplain):
❑ Per 15A NCAC 02T .0105(c)(8), provide written documentation from all local governing entities that the facility is in
compliance with all local ordinances regarding construction or operation of wastewater treatment and/or disposal facilities
within the floodplain.
INSTRUCTIONS FOR FORM: WWIS 06-16 & SUPPORTING DOCUMENTATION Page 5 of 6

P. Additional Documentation (continued):
➢ Operational Agreements (All Application Packages for Home/Property Owners' Associations and Developers of lots to be
sold):
➢ Home/Property Owners' Associations
❑ Per 15A NCAC 02T .0115(c), submit the properly executed Operational Agreement (FORM: HOA).
❑ Per 15A NCAC 02T .0115(c), submit the proposed or approved Articles of Incorporation, Declarations and By-laws.
➢ Developers of lots to be sold
❑ Per 15A NCAC 02T .0115(b), submit the properly executed Operational Agreement (FORM: DEV).
➢ Threatened or Endangered Aquatic Species Documentation (All Application Packages):
❑ Per 15A NCAC 02T .0105(c)(10), submit documentation from the Department's Natural Heritage Program demonstrating
the presence or absence of threatened or endangered aquatic species within the boundary of the wastewater treatment,
storage and irrigation facilities.
❑ If the facility directly impacts such species, this documentation shall provide information on the need for permit conditions
pursuant to 15A NCAC 02B .0110.
➢ Wastewater Chemical Analysis (All Application Packages treating Industrial Waste):
❑ Per 15A NCAC 02T .0504(h), provide a complete Division certified laboratory chemical analysis of the effluent to be
irrigated for the following parameters (For new facilities, an analysis from a similar facility's effluent is acceptable):
❑ Ammonia Nitrogen (NH3-N) ❑ Nitrate Nitrogen (NOs-N) ❑ Total Organic Carbon
❑ Calcium ❑ pH ❑ Total Phosphorus
❑ Chemical Oxygen Demand (COD) ❑ Phenol ❑ Total Trihalomethanes
❑ Chloride ❑ Sodium ❑ Total Volatile Organic Compounds
❑ Fecal Coliform ❑ Sodium Adsorption Ratio (SAR) ❑ Toxicity Test Parameters
❑ 5-day Biochemical Oxygen Demand (BOD5) ❑ Total Dissolved Solids
❑ Magnesium ❑ Total Kjeldahl Nitrogen (TKN)
THE COMPLETED APPLICATION AND SUPPORTING DOCUMENTATION SHALL BE SUBMITTED TO:
NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
WATER QUALITY PERMITTING SECTION
NON -DISCHARGE PERMITTING UNIT
By U.S. Postal Service:
1617 MAIL SERVICE CENTER
RALEIGH, NORTH CAROLINA 27699-1617
TELEPHONE NUMBER: [phone]
By Courier/Special Deliverv:
512 N. SALISBURY ST.
RALEIGH, NORTH CAROLINA 27604
FAX NUMBER: [phone]
INSTRUCTIONS FOR FORM: WWIS 06-16 & SUPPORTING DOCUMENTATION Page 6 of 6

State of North Carolina
Department of Environmental Quality
DWR Division of Water Resources
15A NCAC 02T .0500 — WASTEWATER IRRIGATION SYSTEMS
Division of Water Resources FORM: WWIS 06-16
I. APPLICANT INFORMATION:
1. Applicant's name: North Carolina Wildlife Resources Commission
2. Applicant type: ❑ Individual ❑ Corporation ❑ General Partnership ❑ Privately -Owned Public Utility
❑ Federal ® State ❑ Municipal ❑ County
3. Signature authority's name: Gary Gardner per 15A NCAC 02T .0106(b) Title: Engineering Section Chief
4. Applicant's mailing address: 1702 Mail Service Center
City: Raleigh State: NC Zip: 27699-1720
5. Applicant's contact information:
Phone number: [phone] Email Address: eary.gardner(a)ncwildlife.org
II. FACILITY INFORMATION:
1. Facility name: Pisgah Wildlife Education Center
2. Facility status: Existing
3. Facility type: Minor (< 10,000 GPD or < 300 disposal acres)
4. Facility's physical address: 1401 Fish Hatchery Road
City: Pisgah Forest State: NC Zip: 28768- County: Transylvania
5. Wastewater Treatment Facility Coordinates (Decimal Degrees): Latitude: 35.282500' Longitude:-82.798900'
Datum: Unknown Level of accuracy: Unknown Method of measurement: Unknown
6. USGS Map Name:
III. CONSULTANT INFORMATION:
1. Professional Engineer: Mark C. Brooks License Number: 026539 Firm: Brooks Engineering Associates, P.A.
Mailing address: 15 Arlington Street
City: Asheville State: NC Zip: 28801-
Phone number: [phone] Email Address: mbrooksnbrooksea.com
2. Soil Scientist: License Number: Firm:
Mailing address:
City: State:
Zip: -
Phone number: () -
Email Address: _
3. Geologist:
License Number:
Mailing address:
City: State:
Zip: -
Phone number: (_) _-
Email Address: _
4. Agronomist:
Firm:
Mailing address:
City: State:
Zip: -
Phone number: () -
Email Address: _
Firm:
FORM: WWIS 06-16 Page 1 of 12

IV. GENERAL REQUIREMENTS —15A NCAC 02T .0100:
1. Application type: ❑ New ❑ Major Modification ® Minor Modification
If a modification, provide the existing permit number: WQ0012948 and most recent issuance date: April 12015
2. Application fee: $0 - Standard - Minor Modification
3. Does this project utilize public monies or lands? ® Yes or ❑ No
If yes, was an Environmental Assessment required under 15A NCAC 01 C? ❑ Yes or ® No
If yes, which final environmental document is submitted? ❑ Finding of No Significant Impact or ❑ Record of Decision
Briefly describe any mitigating factors from the Environmental Assessment that may impact this facility:
4. What is the status of the following permits/certifications applicable to the subject facility?
Permit/Certification
Date
Submitted
Date
Approved
Permit/Certification
Number
Agency Reviewer
Collection System(Q > 200,000 GPD)
Dam Safety
Erosion & Sedimentation Control Plan
Nationwide 12 / Section 404
Pretreatment
Sewer System
Stormwater Manaeement Plan
Wetlands 401
Other:
5. What is the wastewater type? ® Domestic or Industrial (See 15A NCAC 02T .0103(20))
Is there a Pretreatment Program in effect? ❑ Yes or ❑ No
Has a wastewater chemical analysis been submitted? ❑ Yes or ❑ No
6. Wastewater flow: 7500 GPD
Limited by: ® Treatment, ❑ Storage, ❑ Field Hydraulics, ❑ Field Agronomics or ❑ Groundwater Mounding
7. Explain how the wastewater flow was determined: ❑ 15A NCAC 02T .0114 or ® Representative Data
Has a flow reduction been approved under 15A NCAC 02T .0114(t)? ❑ Yes or ® No
Establishment Type
Daily Design Flow a
No. of Units
Flow
gal/
GPD
gal/
GPD
gal/
GPD
gal/
GPD
gal/
GPD
gal/
GPD
Total
GPD
a See 15A NCAC 02T .0114(b), (d), (e (1) and (e)(2), for caveats to wastewater design flow rates (i.e., minimum flow per
dwelling; proposed unknown non-residential development uses; public access facilities located near high public use areas;
and residential property located south or east of the Atlantic Intracoastal Waterway to be used as vacation rentals as defined
in G.S. 42A-4).
FORM: WWIS 06-16 Page 2 of 12

IV. GENERAL REQUIREMENTS —15A NCAC 02T .0100 (continued):
8. What is the nearest 100-year flood elevation to the facility? 2341.4 feet mean sea level. Source: Surveyor
Are any treatment, storage or irrigation facilities located within the 100-year flood plain? ® Yes or ❑ No
y If yes, which facilities are affected and what measures are being taken to protect them against flooding? All openings
2' above BFE
If yes, has the Applicant submitted written documentation of compliance with & 143 Article 21 Part 6? ® Yes or ❑ No
9. Has the Applicant provided documentation of the presence or absence of threatened or endangered aquatic species utilizing
information provided by the Department's Natural Heritage Program? ❑ Yes or ® No
10. Does the facility have a proposed or existing groundwater monitoring well network? ❑ Yes or ® No
If no, provide an explanation as to why a groundwater monitoring well network is not proposed: Not part of plans or permit
If yes, complete the following table (NOTE — This table may be expanded for additional wells):
Well Name
Status
Latitude'
Longitude a
Gradient
Location
Select
o-
Select
Select
Select
o-
Select
Select
Select
o-
Select
Select
Select
o-
Select
Select
Select
o-
Select
Select
Select
o-
Select
Select
Select
0-
Select
Select
Select
0-
Select
Select
Select
0-
Select
Select
Select
0-
Select
Select
a Provide the following latitude and longitude coordinate determination information:
Datum: Select Level of accuracy: Select Method of measurement: Select
11. If the Applicant is a Privately -Owned Public Utility, has a Certificate of Public Convenience and Necessity been submitted?
❑ Yes, ❑No or ®N/A
12. If the Applicant is a Developer of lots to be sold, has a Developer's Operational Agreement (FORM: DEV) been submitted?
❑ Yes, ❑No or ®N/A
13. If the Applicant is a Home/Property Owners' Association, has an Association Operational Agreement (FORM: HOA) been
submitted? ❑ Yes, ❑No or ®N/A
14. Demonstration of historical consideration for permit approval — 15A NCAC 02T .0120:
Has the Applicant or any parent, subsidiary or other affiliate exhibited the following?
a. Has been convicted of environmental crimes under Federal law or G.S. 143-215.6B? ❑ Yes or ® No
b. Has previously abandoned a wastewater treatment facility without properly closing that facility? ❑ Yes or ® No
c. Has unpaid civil penalty where all appeals have been abandoned or exhausted? ❑ Yes or ® No
d. Is non -compliant with an existing non -discharge permit, settlement agreement or order? ❑ Yes or ❑ No
e. Has unpaid annual fees in accordance with 15A NCAC 02T .0105(e)(2)? ❑ Yes or ❑ No
FORM: WWIS 06-16 Page 3 of 12

V. WASTEWATER TREATMENT FACILITY DESIGN CRITERIA —15A NCAC 02T .0505:
1. For the following parameters, provide the estimated influent concentrations and designed effluent concentrations as
determined in the Engineering Calculations, and utilized in the Agronomic Evaluation and Groundwater Modeling (if
applicable):
Parameter
Estimated Influent Concentration
Designed Effluent Concentration
(monthly average)
Ammonia Nitrogen (NH3-N)
45 mg/L
5 mg/L
Biochemical Oxygen Demand (BOD5)
250 mg/L
15 mg/L
Fecal Coliforms
1000 per 100 mL
Nitrate Nitrogen (NO3-N)
10 mg/L
10 mg/L
Nitrite Nitrogen (NO2-N)
0 mg/L
5 mg/L
Total Kjeldahl Nitrogen
10 mg/L
Total Nitrogen
55 mg/L
25 mg/L
Total Phosphorus
<10 mg/L
5 mg/L
Total Suspended Solids (TSS)
120 mg/L
15 mg/L
2. Is flow equalization of at least 25% of the average daily flow provided? ® Yes or ❑ No
3. Does the treatment facility include any bypass or overflow lines? ❑ Yes or ® No
If yes, describe what treatment units are bypassed, why this is necessary, and where the bypass discharges:
4. Are multiple pumps provided wherever pumps are used? ® Yes or ❑ No
If no, how does the Applicant intend on complying with 15A NCAC 02T .0505(k)?
5. Check the appropriate box describing how power reliability will be provided in accordance with 15A NCAC 02T .0505(1):
® Automatically activated standby power supply onsite capable of powering all essential treatment units; or
❑ Approval from the Director that the facility:
➢ Has a private water supply that automatically shuts off during power failures and does not contain elevated water
storage tanks;
➢ Has sufficient storage capacity that no potential for overflow exists; and
➢ Can tolerate septic wastewater due to prolonged detention.
6. If the wastewater treatment system is located within the 100-year flood plain, are there water -tight seals on all treatment units
or a minimum of two feet protection from the 100-year flood plain elevation? ® Yes, ❑ No or ❑ N/A
7. In accordance with 15A NCAC 02T .0505(o), how many days of residuals storage are provided? >30
8. How does the Applicant propose to prohibit public access to the wastewater treatment and storage facilities? fencing
9. If an influent pump station is part of the proposed facility (i.e., within the wastewater treatment plant boundary), does the
influent pump station meet the design criteria in 15A NCAC 02T .0305(h)? ❑ Yes, ❑ No, ❑ N/A — To be permitted
separately, or ® N/A — Gravity fed
10. If septic tanks are part of the wastewater treatment facility, do the septic tanks adhere to the standards in 15A NCAC 18A
.1900? ® Yes, ❑ No or ❑ N/A
FORM: WWIS 06-16 Page 4 of 12

V. WASTEWATER TREATMENT FACILITY DESIGN CRITERIA —15A NCAC 02T .0505 (continued):
11. Provide the requested treatment unit and mechanical equipment information:
a. PRELIMINARY / PRIMARY TREATMENT (i.e., physical removal operations and flow equalization):
Treatment Unit
No. of
Units
Manufacturer or
Material
Dimensions (ft) /
Spacings (in)
Volume
(gallons)
Plan Sheet
Reference
Specification
Reference
Select
Select
Select
Select
Select
b. SECONDARY / TERTIARY TREATMENT (i.e., biological and chemical processes to remove organics and nutrients)
Treatment Unit
No. of
Units
Manufacturer or
Material
Dimensions (ft)
Volume
(gallons)
Plan Sheet
Reference
Specification
Reference
Tertiary Filters
2
EZ Treat
7.5x20.lx3.5
3946
N-3.1
10
Select
Select
Select
Select
Select
Select
Select
c. DISINFECTION
No. of
Manufacturer or
Volume
Plan Sheet
Specification
Treatment Unit
Dimensions (ft)
Units
Material
(gallons)
Reference
Reference
Select
Select
➢ If chlorination is the proposed method of disinfection, specify detention time provided: minutes (NOTE — 30
minutes minimum required), and indicate what treatment unit chlorine contact occurs:
➢ If ultraviolet (UV) light is the proposed method of disinfection, specify the number of banks: , number of lamps
per bank: and maximum disinfection capacity: GPM.
d. RESIDUAL TREATMENT
No. of
Manufacturer or
Volume
Plan Sheet
Specification
Treatment Unit
Dimensions (ft)
Units
Material
(gallons)
Reference
Reference
Select
Select
FORM: WWIS 06-16 Page 5 of 12

V. WASTEWATER TREATMENT FACILITY DESIGN CRITERIA —15A NCAC 02T .0505 (continued):
e. PUMPS
Location
No. of
Pumps
Purpose
Manufacturer /
Type
Capacity
Plan Sheet
Reference
Specification
Reference
GPM
I TDH
Sand Filter Dose
Tank
4
Dose Media Filter
Sta-Rite
38
52
N-3.1
10
f. BLOWERS
Location
No. of
Blowers
Units Served
Manufacturer /
T e
Capacity
(CFM)
Plan Sheet
Reference
Specification
Reference
g. MIXERS
Location
No. of
Mixers
Units Served
Manufacturer /
Type
Power
(h)
Plan Sheet
Reference
Specification
Reference
h. RECORDING DEVICES & RELIABILITY
Device
No. of
Units
Location
Manufacturer
Maximum
Capacity
Plan Sheet
Reference
Specification
Reference
Select
Select
Select
Select
EFFLUENT PUMP / FIELD DOSING TANK (IF APPLICABLE):
FORM: WWIS 06-16 Page 6 of 12

Plan Sheet
Reference
Specification
Reference
Internal dimensions (L x W x H or (p x H)
ft
ft
ft
Total volume
ft3
gallons
Dosing volume
ft3
gallons
Audible & visual alarms
Equipment to prevent irrigation during rain
events
FORM: WWIS 06-16 Page 7 of 12

VI. EARTHEN IMPOUNDMENT DESIGN CRITERIA —15A NCAC 02T .0505:
IF MORE THAN ONE IMPOUNDMENT, PROVIDE ADDITIONAL COPIES OF THIS PAGE AS NECESSARY.
1. What is the earthen impoundment type? Select
2. Storage Impoundment Coordinates (Decimal Degrees): Latitude: 0Longitude: - °
Datum: Select Level of accuracy: Select Method of measurement: Select
3. Do any impoundments include a discharge point (pipe, spillway, etc)? ❑ Yes or ❑ No
4. Are subsurface drains present beneath or around the impoundment to control groundwater elevation? ❑ Yes or ❑ No
5. Is the impoundment designed to receive surface runoff? ❑ Yes or ❑ No
If yes, what is the drainage area? ftZ, and was this runoff incorporated into the water balance? ❑ Yes or ❑ No
6. If a liner is present, how will it be protected from wind driven wave action?:
7. Will the earthen impoundment water be placed directly into or in contact with GA classified groundwater? ❑ Yes or ❑ No
If yes, has the Applicant provided predictive calculations or modeling demonstrating that such placement will not result in a
contravention of GA groundwater standards? ❑ Yes or ❑ No
8. What is the depth to bedrock from the earthen impoundment bottom elevation? ft
If the depth to bedrock is less than four feet, has the Applicant provided a liner with a hydraulic conductivity no greater than
1 x 10-7 cm/s? ❑ Yes, or ❑ N/A
Has the Applicant provided predictive calculations or modeling demonstrating that surface
water or groundwater standards will not be contravened? ❑ Yes or ❑ No
If the earthen impoundment is excavated into bedrock, has the Applicant provided predictive calculations or modeling
demonstrating that surface water or groundwater standards will not be contravened? ❑ Yes, ❑ No or ❑ N/A
9. If the earthen impoundment is lined and the mean seasonal high water table is higher than the impoundment bottom
elevation, how will the liner be protected (e.g., bubbling, groundwater infiltration, etc.)?
10. If applicable, provide the specification page references for the liner installation and testing requirements:
11. If the earthen impoundment is located within the 100-year flood plain, has a minimum of two feet of protection (i.e., top of
embankment elevation to 100-year flood plain elevation) been provided? ❑ Yes or ❑ No
12. Provide the requested earthen impoundment design elements and dimensions:
Earthen Impoundment Design Elements
Earthen Impoundment Dimensions
Liner type:
❑ Clay
❑ Synthetic
Top of embankment elevation:
ft
❑ Other
I ❑ Unlined
Liner hydraulic conductivity:
x cm/s
Freeboard elevation:
ft
Hazard class:
Select
Toe of slope elevation:
ft
Designed freeboard:
ft
Impoundment bottom elevation:
ft
Total volume:
ft3
gallons
Mean seasonal high water table depth:
ft
Effective volume:
ft3
gallons
Embankment slope:
Effective storage time:
days
Top of dam water surface area:
ft,
Plan Sheet Reference:
Freeboard elevation water surface area:
ft,
Specification Section:
Bottom of impoundment surface area:
ft,
NOTE — The effective volume shall be the volume between the two foot freeboard elevation and the: (1) pump intake pipe
elevation; (2) impoundment bottom elevation or (3) mean seasonal high water table, whichever is closest to the two foot
freeboard elevation.
FORM: WWIS 06-16 Page 8 of 12

VII. IRRIGATION SYSTEM DESIGN CRITERIA —15A NCAC 02T .0505:
1. Provide the minimum depth to the seasonal high water table within the irrigation area:
NOTE — The vertical separation between the seasonal high water table and the ground surface shall be at least one foot.
2. Are there any artificial drainage or water movement structures (e.g., surface water or groundwater) within 200 feet of the
irrigation area? ❑ Yes or ❑ No
If yes, were these structures addressed in the Soil Evaluation and/or Hydrogeologic Report, and are these structures to be
maintained or modified?
3. Soil Evaluation recommended loading rates (NOTE — This table may be expanded for additional soil series):
Soil Series
Fields within
Soil Series
Recommended
Loading Rate
in/hr
Recommended
Loading Rate
in/ r
Annual /Seasonal
Loading
If Seasonal, list
appropriate
months
Select
Select
Select
Select
Select
Select
4. Are the designed loading rates less than or equal to Soil Evaluation recommended loading rates? ❑ Yes or ❑ No
If no, how does the Applicant intend on complying with 15A NCAC 02T .0505(n)?
5. How does the Applicant propose to prohibit public access to the irrigation system?.
6. Has the irrigation system been equipped with a flow meter to accurately determine the volume of effluent applied to each
field as listed in VII.8.? ❑ Yes or ❑ No
If no, how does the Applicant intend on complying with 15A NCAC 02T .0505(1)?
7. Provide the required cover crop information and demonstrate the effluent will be applied at or below agronomic rates:
Cover Crop
Soil Series
% Slope
Nitrogen Uptake Rate
lbs/ac r
Phosphorus Uptake
Rate lbs/ac r
a. Specify where the nitrogen and phosphorus uptake rates for each cover crop were obtained:
b. Proposed nitrogen mineralization rate:
c. Proposed nitrogen volatilization rate: _
d. Minimum irrigation area from the Agronomist Evaluation's nitrogen balance: ft2
e. Minimum irrigation area from the Agronomist Evaluation's phosphorus balance: ft2
f. Minimum irrigation area from the water balance: ft2
FORM: WWIS 06-16 Page 9 of 12

VII. IRRIGATION SYSTEM DESIGN CRITERIA —15A NCAC 02T .0505 (continued):
8. Field Information (NOTE — This table may be expanded for additional fields):
Field
Area
(acres)
Dominant
Soil Series
Designed
Loading
Rate
(in/hr)
Designed
Loading
Rate
(in/ r
Latitude a
Longitude a
Waterbody
Stream Index
NO b
Classification
O
O
O
a
a
O
O
o
a
O
O
O
O
O
J
O
O
o
o
o
0
Total
a Provide the following latitude and longitude coordinate determination information:
Datum: Select Level of accuracy: Select Method of measurement: Select
b For assistance determining the waterbody stream index number and its associated classification, instructions may be
downloaded at: hlW:Hdeg.nc.gov/about/divisions/water-resources/planning/classification-standards/classifications
Spray Irrigation Design Elements
Drip Irrigation Design Elements
Nozzle wetted diameter:
ft
Emitter wetted area:
ft2
Nozzle wetted area:
ftZ
Distance between laterals:
ft
Nozzle capacity:
GPM
Distance between emitters:
ft
Nozzle manufacturer/model:
/
Emitter capacity:
GPH
Elevation of highest nozzle:
ft
Emitter manufacturer/model:
/
Specification Section:
Elevation of highest emitter:
ft
E
or
Specification Section:
FORM: WWIS 06-16 Page 10 of 12

VIII. SETBACKS —15A NCAC 02T .0506:
1. Does the project comply with all setbacks found in the river basin rules (15A NCAC 02B .0200)? ® Yes or ❑ No
If no, list non -compliant setbacks:
2. Have any setback waivers been obtained in order to comply with 15A NCAC 02T .506(a) and .0506 b ? ❑ Yes or ® No
If yes, have these waivers been written, notarized and signed by all parties involved and recorded with the County Register of
Deeds? ❑ Yes or ❑ No
3. Provide the minimum field observed distances (ft) for each setback parameter to the irrigation system and treatment/storage
units (NOTE — Distances greater than 500 feet may be marked N/A):
Setback Parameter
Irrigation
System
Treatment /
�Storage Units
Any habitable residence or place of assembly under separate ownership or not to be
maintained as part of the project site
NA
Any habitable residence or place of assembly owned by the Permittee to be maintained as
art of the project site
Any private or public water supply source
NA
Surface waters (streams — intermittent and perennial, perennial waterbodies, and wetlands)
219
Groundwater lowering ditches (where the bottom of the ditch intersects the SHWT)
Subsurface groundwater lowering drainage systems
Surface water diversions (ephemeral streams, waterways, ditches)
Any well with exception of monitoring wells
Any property line
NA
Top of slope of embankments or cuts of two feet or more in vertical height
Any water line from a disposal system
Any swimming pool
Public right of way
Nitrification field
Any building foundation or basement
Impounded public water supplies
Public shallow groundwater supply (less than 50 feet deep)
4. Does the Applicant intend on complying with 15A NCAC 02T .0506(c) in order to have reduced irrigation setbacks to
property lines? ❑ Yes or ® No
If yes, complete the following table by providing the required concentrations as determined in the Engineering Calculations:
Estimated Influent
Designed Effluent
Designed Effluent
Parameter
Concentration
Concentration
Concentration
(monthly average)
(daily maximum
Ammonia Nitrogen (NH3-N)
mg/L
mg/L
mg/L
Biochemical Oxygen Demand
mg/L
mg/L
mg/L
BODS
Fecal Coliforms
per 100 mL
per 100 mL
Total Suspended Solids (TSS)
mg/L
mg/L
mg/L
Turbidity
NTU
FORM: WWIS 06-16 Page 11 of 12

IX. COASTAL WASTE TREATMENT DISPOSAL REQUIREMENTS —15A NCAC 02H .0400:
1. Is this facility located in a Coastal Area as defined per 15A NCAC 02H .0403? ❑ Yes or ® No
For assistance determining if the facility is located within the Coastal Area, a reference map may be downloaded at: Coastal
Areas Boundary.
2. Is this an Interim Treatment and Disposal Facility per 15A NCAC 02H .0404(g)? ❑ Yes or ® No
NOTE — Interim facilities do not include County and Municipal area -wide collection and treatment systems.
IF ANSWERED YES TO ITEMS IX.1. AND IX.2., THEN COMPLETE ITEMS IX.3. THROUGH IX.17.
3. Is equalization of at least 25% of the average daily flow provided? ® Yes or ❑ No
4. How will noise and odor be controlled? NA
5. Is an automatically activated standby power source provided? ® Yes or ❑ No
6. Are all essential treatment units provided in duplicate? ® Yes or ❑ No
NOTE — Per 15A NCAC 02T .0103(16), essential treatment units are defined as any unit associated with the wastewater
treatment process whose loss would likely render the facility incapable of meeting the required performance criteria, including
aeration units or other main treatment units, clarification equipment, filters, disinfection equipment, pumps and blowers.
7. Are the disposal units (i.e., irrigation fields) provided in duplicate (e.g., more than one field)? ® Yes or ❑ No
8. Is there an impounded public surface water supply within 500 feet of the wetted area? ® Yes or ❑ No
9. Is there a public shallow groundwater supply (less than 50 feet deep) within 500 feet of the wetted area? ❑ Yes or ® No
10. Is there a private groundwater supply within 100 feet of the wetted area? ❑ Yes or ® No
11. Are there any SA classified waters within 100 feet of the wetted area? ❑ Yes or ® No
12. Are there any non -SA classified waters within 50 feet of the wetted area? ❑ Yes or ® No
13. Are there any surface water diversions (i.e., drainage ditches) within 25 feet of the wetted area? ❑ Yes or ® No
14. Per the requirements in 15A NCAC 02H .0404(g)(7), how much green area is provided? ftZ
15. Is the green area clearly delineated on the plans? ® Yes or ❑ No
16. Is the sprairrigation wetted area within 200 feet of any adjoining properties? ❑ Yes, ❑ No or ® N/A (i.e., drip irrigation)
17. Does the designed annual loading rate exceed 91 inches? ❑ Yes or ® No
FORM: WWIS 06-16 Page 12 of 12

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ONSI-TE WASTEWATER SYSTEM UPGRADE
GENERAL CONSTRUCTION NOTES
A. NO A CONSTRUCTION SH LL COMMENCE PRIOR TO A PRECONSTRUCTION MEETING WITH THE PROJECT ENGINEER THE CONTRACTOR AND
A REPRESENTATIVE F THE
E CLIENT PRESENT. ENGINEER RECOMMENDS TO CONTRACT WITH THE CERTIFIED OPERATOR PRIOR TO THE
PRE -CONSTRUCTION MEETING SO HE/SHE CAN BE PRESENT AND BECOME FAMILIAR WITH THE SYSTEM DURING THE INSTALLATION.
B. ALL WORK AND MA
TERIALS ATERIALS MUST MEET OR EXCEED THE STANDARDS SET FORTH IN THE LAWS OF SEWAGE TREATMENT AND DISPOSAL
SYSTEMS SET FORTH BY THE N.C.DEPA
RTMENT OF ENVIRONMENT AND NATURAL RESOURCES NCAC 1 A 2T.
C. ALL ELECTRICAL PLUMBING
CT & U MB ING WORK SHALL MEET OR EXCEED N.C. BUILDING CODE AND BE APPROVED BY THE STATE CONSTRUCTION
OFFICE ELECTRICAL INSPECTOR.
D. ANY ALTERATIONS TO THE PLANS MUST BE APPROVED BY THE PROJECT ENGINEER AND THE NCDE .
Q
E. CONTRACTOR R HALL C P V T C O S COORDINATE WITH THE ROPER UTILITY COMPANIES AND GOVERNMENT AGENCIES. PRIOR TO COMMENCEMENT OF
WORK. THE CONTRACTOR SHALL OBTAIN AND PAY FOR, PRIOR TO THE BEGINNING OF ANY WORK, ALL PERMITS AND LICENSES
NECESSARY TO ACCOMPLISH THE WORK. PERMITS CAN INCLUDE, BUT ARE. NOT LIMITED TO NCDOT ENCROACHMENT PERMIT, GRADING
PERMIT, EROSION CONTROL PERMIT, AND UTILITY COMPANY'S PERMIT FOR THE WORK TO BE PERFORMED ON THEIR RESPECTIVE
FACILITIES THESE PLANS ARE FOR WASTEWATER PERMITING ONLY.
F. ANY CONTRACTOR PERFORMING WORK ON THIS PROJECT SHALL FAMILIARIZE HIMSELF WITH THE JOB SITE AND LOCATION OF ALL
EXISTING FACILITIES AND UNDERGROUND UTILITIES SHOWN OR NOT SHOWN ON THESE PLANS. THE CONTRACTOR WILL BE
UNILATERALLY RESPONSIBLE FOR ANY DAMAGE DONE TO EXISTING FACILITIES AND UNDERGROUND UTILITIES THAT ARE SHOWN OR NOT
SHOWN ON THESE PLANS; AND IF DAMAGED, SHALL BE REPAIRED OR REPLACED TO THE SATISFACTION OF THE OWNER AT NO COST TO
THE OWNER.
G. PROTECT UNDERGROUND UTILITIES AND THEIR APPURTENANCES TO REMAIN ON SITE FROM DAMAGE DURING CONSTRUCTION
OPERATIONS. PROVIDE SHORING AND OTHER METHODS OF PROTECTIONS AS NEEDED TO ENSURE THE CONDITION AND OPERATION OF
THOSE UTILITIES TO REMAIN. CONTRACTOR SHALL CONFIRM AS ENCOUNTERED AND COORDINATE AS NECESSARY.
H. CONTRACTOR(S) SHALL BE RESPONSIBLE FOR ADEQUATE SUPERVISION TO PREVENT DAMAGE AND MOVEMENT FROM EQUIPMENT
WORKING AROUND CONSTRUCTION STAKES. THESE CONSTRUCTION STAKES SHALL REMAIN IN PLACE AND BE PROTECTED UNTIL OWNER
APPROVES THEIR REMOVAL. ANY STAKES THAT HAVE BEEN DISPLACED AS A RESULT OF CONSTRUCTION ACTIVITY ARE TO BE REPLACED
BY A LICENSED LAND SURVEYOR ENGAGED BY THE CONTRACTOR AT NO COST TO THE OWNER.
I. UPON COMPLETION OF THE WORK, THE CONTRACTOR SHALL CLEAN THE ENTIRE SITE OF ALL CONSTRUCTION RELATED MATERIAL OR
DEBRIS TO THE OWNERS SATISFACTION.
J. THE ENGINEER WILL NOT BE CONTINUOUSLY PRESENT IN THE FIELD. IT IS SPECIFICALLY UNDERSTOOD THAT HE DOES NOT UNDERTAKE
NOR ASSUME ANY OBLIGATION FOR SUPERVISION OF CONSTRUCTION, SAFETY MEASURES TAKEN DURING THE COURSE OF
CONSTRUCTION, RESPONSIBILITY FOR SCHEDULING THE WORK FOR INSURING COMPLETE COMPLIANCE WITH THE CONTRACT
DOCUMENTS AND/OR ALL CODE REQUIREMENTS, RULES AND REGULATION OF ANY PUBLIC OR PRIVATE AUTHORITY HAVING JURISDICTION
OVER THE WHOLE OR ANY PART OF THE WORK. IN ADDITION, THE ENGINEER NEITHER UNDERTAKES, ASSUMES, NOR GUARANTEES THE
WORK AND/OR PERFORMANCE OF THE CONTRACTOR.
K. NO PORTION OF THE SYSTEM MAY BE BACKFILLED UNTIL THE PORTION HAS BEEN APPROVED BY THE PROJECT ENGINEER.
L. THE PROJECT ENGINEER'S REPORT INCLUDE THE SPECIFICATIONS, TESTING REQUIREMENTS, SPECIFIED PRODUCT INFORMATION AND
CALCULATIONS. SPECIFICATIONS IN THE ENGINEER'S REPORT SUPERCEDE ANY INTERPRETED FROM THESE DRAWINGS.
PROJECT SCOPE NOTES
A. SITE IS CURRENTLY SERVED BY A SAND FILTER AND SURFACE DRIP IRRIGATIONS SYSTEM PERMITTED FOR 7,500 GPD. THE SYSTEM ALSO
HAS A CONSTRUCTED WETLAND FOR WET WEATHER STORAGE AND CHLORINE DISINFECTION. THE SYSTEM HAS BEEN IN SERVICE FOR
OVER 20 YEARS.
B. SYSTEM IS PERMITTED BY WQ0012948 WASTEWATER IRRIGATION SYSTEM.
C. EXISTING SYSTEM PIPING LAYOUT, TANK SIZE AND COMPONENTS ARE DERIVED FROM ENGINEERING PLANS BY McGILL ENGINEERING
DATED SEPTEMBER 1996 (PROVIDED BY OWNERS) AND FROM ENGINEERING PLANS BY BEA DATED 6-5-18. .
D. EXISTING SAND FILTER TO BE REPLACED WITH EZ-TREAT 4L PODS.
GENERAL SURVEY NOTES
A. LOCATION OF VISIBLE ABOVE GROUND COMPONENTS SURVEYED BY PROJECT SURVEYOR.
B. SUBJECT SITE IS LOCATED WITHIN FLOOD ZONE "A" PER FIRM MAP NUMBER 37008567003 AND 37008567003 BOTH DATED OCTOBER 2, 2009.
FLOOD ZONES CLASSIFIED AS "A" DO NOT HAVE BASE FLOOD ELEVATIONS DETERMINED. FOR THE PURPOSE OF THESE PLANS, THE BASE
FLOOD ELEVATION (BFE) IS ESTABLISHED AS 2.0' ABOVE RIVER BANK PERPENDICULAR TO THE SITE.
REQUIRED INSPECTION SCHEDULE
BY PROJECT'ENGI NEER
A. PRECONSTRUCTION MEETING.
B. HYDROSTATIC OR PNEUI VATIC PRESSURE TESTING OF ALL SYSTEM COMPONENTS PRIOR TO BACKFILLING.
C. CONTRACTOR SHALL PROVIDE COMPONENT SUBMITTALS- INCLUDING, BUT NOT LIMITED TO: TANKS, PUMPS, CONTROL PANELS, FLOATS OR
PRESSURE BELL ASSEMBLIES, AND ANY OTHER PERTINENT ITEMS INSTALLED FOR THIS PROJECT. PACKAGE MUST BE SUBMITTED PRIOR TO
CONSTRUCTION FOR ITEMS REQUIRING SUBSTITUTION APPROVAL OR AT FINAL INSPECTION FOR ITEMS NOT CHANGED FROM APPROVED PLANS.
INVOICES, PACKING SLIPS OR DELIVERY CONFIRMATION PAPERWORK ARE ACCEPTABLE. FINAL ENGINEERING CERTIFICATION WILL NOT BE
RELEASED TO THE COUNTY ENVIRONMENTAL HEALTH DEPARTMENT UNTIL THIS PACKAGE IS RECEIVED BY THE ENGINEER.
D. FINAL INSPECTION TO INCLUDE OPERATION OF ALL SYSTEM COMPONENTS.
BEFORE YOU DIG Is
CALL 81 1
N.C. ONE —CALL CENTER
IT'S THE LAW !
'OROJECT MAriP,"
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V1 CINI T Y MA
N.T.S.
TRANSYLVANIA COUNTY
CLIENT:
NC WILDLIFE RESOURCES COMMISSION
ENGINEER:
BROOKS ENGINEERING ASSOCIATES, PA
SURVEYORS:
TOPOGRAPHIC: BROOKS ENG. ASSOC.
NO.: TITLE:
N-0
COVER
N-1.1
EXISTING SITE OVERVIEW
N-1.2
EXISTING SYSTEM AND DEMOLITION PLAN
N-1.3
PROCESS OVERVIEW
N-2
PROPOSED SYSTEM PLAN
N-3.1
SYSTEM DETAILS
N-3.2
SYSTEM DETAILS
CONTACT INFO:
3EFF COLE
1720 MAIL SERVICE CENTER
RALEIGH, NC 27699
919-707-0154
CONTACT INFO:
MARK BROOKS
17 ARLINGTON STREET
ASHEVILLE, NC 28801
828-232-4700
[e-mail]
CONTACT INFO:
PAUL SEXTON
828-232-4700
[e-mail]
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ENGINEER'S NOTES
1. SITE IS CURRENTLY SERVED BY A SAND FILTER AND SURFACE DRIP IRRIGATIONS SYSTEM
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WEATHER STORAGE AND CHLORINE DISINFECTION. THE SYSTEM HAS BEEN IN SERVICE FOR
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2. SYSTEM IS PERMITTED BY WQ0012948 WASTEWATER IRRIGATION SYSTEM.
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Planning
&
Project
Management
Civil
Engineering
Surveying
/ Environmental
Engineering
&
Services
17 Arlington Street / Asheville NC 28801
www.brooksea.com / 828-232-4700
PISCsAH WILDLIFE EDUCATION CENTER
TRANSYLVANIA COUNTY I�IORTH CAROLINA
YYASTEI�YY 4 TER IRRIGA TION SYSTL1 �l UPGR�IDE`
SPE'GIFIC.4 TIONS
PREPARED FOR:
NC WILDLIFE RESOURCES COMMISSION
1720 MAIL SERVICE CENTER
RALEIGH, NC 27699.1720
FINAL DESIGN -- NOT RELEASED FOR CONSTRUCTION
,�ItlillfPtl�r,
.,"bwes3Ipf r�✓i
y c
ORIGINAL:
REVISED:
APRIL 2, 2020
DUNE 30, 2020
BROOKS ENGINEERING ASSOCIATES PROJECT NO.: 502819

TABLE OF CONTENTS
1.0 System Summary & Project Information............................................................. 1
1.1 Summary & Design Parameters......................................................................... 1
1.2 Contacts............................................................................................................ 2
1.3 Scope & Quality Assurance............................................................................... 2
2.0
Piping & Collection System................................................................................. 4
2.1
Location of Sanitary Sewage Systems................................................................ 4
2.2
Sizing & Material................................................................................................. 4
2.3
Burial..................................................................................................................................4
2.4
Steep Slope Installation..................................................................................................5
2.5
Trenching & Installation..................................................................................................5
2.6
Testing................................................................................................................6
2.7
Valving................................................................................................................9
2.8
Tracer Wire......................................................................................................... 9
3.0 Treatment System..........................................................................................................10
3.1 Current Design..................................................................................................10
3.2 Sand Filter Dosing System................................................................................10
3.3 Sand Filter Replacements..................................................................................12
4.0
Site Preparation & Abandonment
.....................................................................13
4.1
Sand Filter Dosing Abandonment......................................................................13
4.2
Sand Filter Abandonment..................................................................................13
4.3
Seeding & Mulching...........................................................................................13
4.3
Erosion Control..................................................................................................14
5.0 Inspection And Monitoring Proceedings.........................................................16
5.1 Pre -Construction Meeting..................................................................................16
5.2 Intermediate Inspection of the System...............................................................16
5.3 Final Inspection & Start-Up................................................................................16
6.0 Product Submittal Sheets.................................................................................18
6.1 Pump Cut -sheets
Itl

1.0 SYSTEM SUMMARY & PROJECT INFORMATION
1.1 Summary & Design Parameters
These specifications and accompanying engineering plans are for a wastewater treatment
system upgrades to serve the Pisgah Wildlife Education Center in Transylvania County North
Carolina. The facility has an existing sand filter system that is experience issues with rainwater
infiltration. The sand filter is to be replaced with a recirculating fixed media system. The fixed
media system has increased surface area in the media versus the sand and therefore requires
significantly less square footage, and has an enclosed top to prohibit rainwater infiltration. No
components associated with the irrigation system are to be repaired or replaced.
Existing Conditions
The existing onsite wastewater system is permitted as a Wastewater Irrigation System by permit
number WQ0012948. The system was designed in 1996 by McGill Engineering. The final
construction documents were utilized as part of this submission. The engineering plans
specified the following primary components:
• Initial septic tankage and collection lines from various wastewater sources at the Pisgah
Education Center,
• A sand filter recirculation tank utilized to dose the sand filter and receive recirculated
sand filter effluent.
• A "reuse water and wetland dose tank" utilized to dose the drip irrigation fields and
constructed wetland during wet weather events.
• A chlorination tablet feeder located in the reuse water and wetland dose tank.
• A pump house containing the control panels and the skid mounted Perc-Rite suction lift
centrifugal pump system utilized to dose the sand filter and drip irrigation fields.
A 50'x60' recirculating sand filter and recirculation ratio distribution box. The sand filter
effluent distribution system is via 40 laterals of drip tubing with 2 gph emitters.
Six reuse drip irrigation zones with a total of 16,840 feet of drip tubing with 0.5 gph
emitters placed 24" o.c..
In 2018 system upgrades/repairs were made to the irrigation system replacing all of the drip
tubing, field valving, and the WSI pump skid and controls were updated to the most recent
model. Also, the dosing system to the sand filter was separated from the irrigation dosing

function and separate pumps were employed to dose the sand filter on a separate time dosing
system. These repairs were installed and certified in 2018.
Proposed Treatment System Changes
The following are the changes covered by the enclosed plans and specifications.
New recirculating fixed media filters capable of treating 8238 gpd will be installed
utilizing the existing effluent piping from the ratio split box to the recirculation tank and
drip field dose tank. The filter influent line is to be replaced with a smaller diameter pipe
size.
• The pumps and control panels for the sand filter dosing system will be replaced with
higher head turbine pumps and new control panels. The locations of the new pumps
and panels will be where the existing are located.
• An additional recirculation line sending a small percentage of the media filter dose will be
added to connect to the drip system filter back wash line. This is to provide enhanced
denitrification. Approximately 2 gpm of the filter dosing will be recirculated back to the
initial septic tank.
• The existing sand filter will have the internal effluent distribution piping removed and the
berms and sand will be regraded to facilitate cover around the media filters and to
facilitate drainage away from the filters. The sand media will be disinfected with dry lime
to kill facultative bacteria in the sand media.
1.2 Contacts
Engineer — Mark Brooks, PE, Brooks Engineering Associates [phone]
Owner Contact — Jeff Cole, NC Wildlife Resources Commission [phone]
System Operator— Bob Barr, RPB System [phone]
1.3 Scope & Quality Assurance
This specifications manual is intended only for the use of permitting and construction of the
intended wastewater treatment facility. Any changes to these plans and specifications shall be
approved by the Project Engineer. Any changes in layout of equipment not approved shall
release the Engineer of any potential liability associated with the system. Only the set of
engineering plans with revision labeled "RELEASED FOR CONSTRUCTION" shall be utilized
for construction.
2

All specifications are subject to North Carolina Laws and Rules for Waste Not Discharged to
Surface Waters 15A NCAC 2T .0500, et.seq. and North Carolina State Plumbing Code and
North Carolina State Electrical Code, where applicable.
The Contract, if awarded, will be on the basis of materials and equipment specified or described
in the plans and specifications. "Preferred Alternatives" are identified for critical pieces of
equipment but all meetings meeting the specification and standard set by the preferred
alternative may be utilized. All materials must be identified and approved by the Engineer in the
Submittals. Engineer's decision of approval or disapproval of any such proposed item will be
final.
Manufacturing Supplier Qualifications
The treatment system manufacturer must provide a recirculating fixed media system for
attached biological growth treatment of domestic strength wastewater. The manufacturer must
be actively engaged in the manufacturing sales and support of over 50 systems installed in
North Carolina. The system must have NSF/ANSI 40, 245 and 350 certifications. The
manufacturer shall furnish a one-year warranty on all materials, equipment and workmanship
from the date of project acceptance by the Owner.
Installation Qualifications
The installation contractor must be actively engaged in the construction and installation of
wastewater land application systems, have experience in installing recirculating fixed media
systems greater than 3,000 gpd, and be certified by the selected manufacturer for installation of
their equipment. Verification documents and contact lists for qualifications will be required.
Suhmittnhs
Submittals for the system design and equipment shall be submitted by Contractor to the
Engineer.
3

2.0 PIPING & COLLECTION
2.1 Location Of Sanitary Sewage Systems
The system is existing and all replacements are to be replaced where the existing components
exist or as otherwise noted in the engineering plans.
2.2 Sizing & Material
Gravity flow pipe and fittings shall be Schedule 40 PVC (polyvinyl chloride) with solvent -
cemented or gasketed joints and SDR 35 or Schedule 40 PVC (ASTM D3034) for all gravity
lines. Gravity lines shall maintain a minimum slope of 1/8-inch fall per lineal foot. No public
gravity sewer main conveying wastewater shall be less than 8 inches in diameter. No private
gravity sewer main conveying wastewater shall be less than 6 inches in diameter. Individual
residential gravity sewer main lines shall not be less than 4 inches in diameter. Building sewers
shall be in accordance with the state plumbing code and approved by the local building
inspector.
Pressure sewer lines shall be of a size and material as specified on the Engineering Plans. Line
sizes will vary depending upon flow and shall be sized to insure a fluid velocity of greater than 2
feet per second but no greater than 8 feet per second unless provisions are made for securing
pipes (anchors and thrust blocks). Line materials shall be based upon calculated line pressures
not exceeding the specified working pressure for a specified pipe material.
2.3 Burial
Bedding and installation shall be consistent with ASTM Standard F 667. These specifications do
not cover interior or initial building connections. The following are general location and
separation guidelines:
♦ Typically a 3-foot minimum cover shall be maintained on all sewer lines.
♦ Sewer transfer lines from top -feed manifolds down to drip lateral lines may be buried
less than 3 feet as all lines shall be installed to drain to the drip irrigation laterals and
will de -pressurize between doses.
♦ Sewer lines may cross a water line if 18 inches clear separation is maintained, with
the sewer line passing under the water line. The sewer line shall be constructed of
ductile iron pipe and the water line shall be constructed of ferrous material equivalent
to water main standards for at least 10 feet on either side of each crossing.
4

♦ Sewer lines may cross a storm drain if at least 12 inches of clear separation is
maintained or the sewer pipe is of ductile iron or encased in ductile iron pipe for at
least 5 feet on either side of the crossing.
♦ Sewer lines may cross a stream if at least three feet of stable cover can be
maintained with a horizontal boring or the sewer line is of ductile iron pipe or
encased in ductile iron pipe for at least 10 feet on either side of the crossing and
protect against the normal range of high and low water. Please refer stream impact
permitting regulations and requirements before initiating any stream crossing.
♦ A minimum separation of 100 ft from any well is required unless the sewer line is
constructed of pipe materials meeting water main standards. The minimum
separation shall not be less than 25 ft from a private well or 50 ft from a public well.
2.4 Steep Slope Installation
Sewers on 20 percent slopes or greater shall be anchored securely with concrete, or equal, with
the anchors spaced as follows:
a. Not greater than 50 feet center to center on grades 21 % to 35%;
b. Not greater than 35 feet center to center on grades 35% to 50 %; and
c. Not greater than 25 feet center to center on grades 50% and over.
Mechanical joint restraints (MegalugTM or equivalent) may be substituted for slope anchors.
Mechanical joint restraints must be used on all pipe joints in steep slope conditions if
substituted.
2.5 Trenching
Trench excavation shall conform to the line, depth and dimensions shown on the engineer plan
details. The trench shall be properly braced and shored so that workmen may work safely and
efficiently. If unstable conditions are encountered, the Engineer shall be notified in order that
proper bedding materials may be selected. Trench excavation or excavation for pipelines shall
consist of excavation necessary for the construction of sewers, conduits and other pipelines and
all appurtenant facilities thereof, pipe embedment materials, and pipe protection, insulating and
sleeving in ductile iron pipe, as called for on the plans. It shall include site preparation,
backfilling and tamping of pipe trenches and around tanks and the disposal of waste materials,
all of which shall conform to the applicable provisions of these specifications. When muck,
quicksand, soft clay, swampy or other material unsuitable for foundations or subgrade are
encountered which extend beyond the limits of the excavation, such material shall be removed
5

and replaced with pipe foundation material as specified in the engineering drawings. Surface
drainage shall not be allowed to enter excavated areas.
Rock encountered in trench excavation shall be removed for the overall width of trench which
shall be as shown on the plans. It shall be removed to a minimum depth of three (3) inches
below the bottom of the pipe. Clean compacted backfill shall replace the excavated rock.
The pipe material listed above shall be installed in accordance with the manufacturer's
recommendations and the requirements of these specifications. All sewer lines shall be laid to
the line and grade shown on the plans. No deviations from line and grade shall be made, unless
they have been approved by the Engineer. The pipe interior shall be kept clean before and after
laying by means approved by the Engineer. Pipe ends shall be plugged at the end of each work
day or when work is temporarily stopped. The plugs shall be watertight so that water and debris
will not enter the pipe.
All backfilling shall be done in such manner as will not disturb or injure the pipe or structure over
or against which it is being placed. Any pipe or structure injured, damaged or moved from its
proper line or grade during backfilling operations shall be opened up and repaired and then re-
backfilled as herein specified. Typically backfilling shall be conducted in lifts of no greater than
3 inches and compacted to a minimum 95% Standard Proctor. The Contractor shall be
responsible for insuring adequate testing is performed and demonstrate compliance with these
specifications. Typically testing shall be performed approximately every 500 feet of piping. Any
sections of piping demonstrating excessive trench settlement shall be excavated and re -
compacted and backfilled. Excessive settlement is indicated by the grade above the piping
trench being lower than the undisturbed adjacent natural grade.
The Contractor shall replace all surface materials and shall restore paving, curbing, sidewalks,
gutters, shrubbery, fences, sod, and other surfaces disturbed, to a condition equal to that before
the work began, furnishing all labor and materials incidental thereto as provided elsewhere in
these specifications.
2.6 Testing
All gravity sewer lines shall be tested by Low Pressure Air Exfiltration Testing with the following
steps.
M

1. All branch fittings and ends of lateral stubs shall be securely plugged at each
manhole. All stoppers shall be adequately braced when required.
2. Air shall be slowly supplied into the plugged pipe line until the internal air pressure
reaches 4.0 pounds per square inch or 4.0 pounds per square inch greater than the
average back pressure of any ground water that may submerge the pipe. At least
two minutes shall be allowed for temperature stabilization before proceeding further.
3. Calculate the pressure drop as the number of minutes for the air pressure within the
pipeline to drop from a stabilized pressure of 3.5 to 2.5 psig.
4. The time allowed for mixed pipe sizes of varying lengths should be calculated as
described in ASTM C828-76T.
5. The following times are for one pipe size only:
Pipe Size (inches)
Time, T
sec/100 ft
Allowable Air Loss, Q
ft3/min
6
42
2.0
8
72
2.0
10
90
2.5
12
108
3.0
15
126
4.0
18
144
5.0
21
180
5.5
24
216
6.0
27
252
6.5
30
288
7.0
6. The pipe line shall be considered acceptable if the time interval for the 1.0 psi
pressure drop is not less than the holding time listed in the following table.
7. If the test fails, the Contractor will be required to locate the cause of the failure, make
necessary repairs, and repeat all testing of the line until the test is passed.
For pressure sewer lines the following Hydrostatic Testing Procedure shall be utilized.
1. As a minimum, all sewer force mains shall be tested in accordance with the
Hydrostatic Testing Requirements of AWWA C600.
2. After pipe has been laid and backfilled, all newly laid pipe or any valve section
thereof shall be subject to a hydrostatic pressure of not less than 150 psi or 1-1/2
times the working pressure, whichever is greater. The duration of the pressure test
shall be two hours. Each valve section of the pipe shall be slowly filled with water.
All air shall be expelled from the pipe while the pipe is being filled and before the
application of the specified test pressure. Taps may be required at points of highest
elevation. These taps are to be tightly plugged after completion of the test.
7

3. The test pressure shall be applied by means of a pump connected to the pipe in a
manner satisfactory to the Project Engineer. The pump, pump connections, gauges,
and all necessary apparatus and labor shall be furnished by the Contractor. The
Contractor shall calibrate the gauges in the presence of the Design Engineer.
4. A test shall be made only after a part or all of the backfilling has been completed and
at least 36 hours after the last concrete thrust block has been cast with high -early
strength cement or at least seven (7) days after the last thrust block has been cast
using standard cement.
5. Any cracked or defective pipes, fittings, or valves discovered during hydrostatic
pressure tests shall be removed and replaced with sound material and the test
repeated until satisfactory to the Design Engineer. No payment shall be made for
the removal and replacement of defective pipes and appurtenances.
6. Leakage shall be defined as the quantity of water that must be supplied into the
newly laid pipe, or any valved section thereof, to maintain pressure within 5 psi of the
specified test pressure. Leakage shall not be measured by a drop in pressure in a
test section over a period of time.
7. Allowable leakage shall not exceed the following U.S. gallons per hour reported in
Table 1:
Table 1. Allowable leakage per 1000 ft of pipeline (gph)
Av . Test Pressure
psi
NOMINAL PIPE DI
A
If the pipeline under test contains sections of various diameters, the allowable leakage will be
the sum of the computed leakage for each size.
Alternatively, no pipe installation will be accepted if the leakage is greater than that determined
by the following formula:
In inch -pound units,
L _ SDJ
133,200
Where:
L = allowable leakage, in gallons per hour
0

S = length of pipe tested, in feet
D = nominal diameter of the pipe, in inches
P = average test pressure during the leakage test, in pounds per square inch
(gauge)
The Contractor shall notify the Project Engineer when the work is ready for testing, and all
testing shall be done in the presence of a representative of Brooks Engineering. All labor,
equipment, water, and materials, including meters and gauges, shall be furnished by the
Contractor at his own expense.
Low pressure pneumatic testing of pressure sewer lines in incremental stages of construction is
recommended to insure leaks are not occurring. Final testing shall be in accordance with the
hydrostatic testing described above.
2.7 Valving
Valving shall be consistent with material types and sizes of piping as shown on the Engineering
Plans. All high points in pressure distribution lines should have air release valves and low
points ("bellies") should have pressure cleanouts. Sufficient isolation should be incorporated to
allow for line maintenance without having to shut down the entire distribution system.
Air release valves must be mechanical lever air/vacuum relief valves (not flapper type). Specific
ARV sizes and types are indicated in the Engineering Plans.
All valves in traffic areas shall be placed in traffic -rated vaults with steel lids. Non -traffic rate
valve vaults may be utilized in irrigation and non -traffic areas.
2.8 Tracer Wire
Tracer wire shall be utilized on all PVC piping. Tracer wire shall be insulated copper wire
installed adjacent and over the full length of piping. Access shall be provided to the tracer wire
or the tracer wire shall terminate at the cleanout between the building drain and building sewer.
The tracer wire size shall be not less than 14 AWG and the insulation type shall be listed for
direct burial
9

3.0 TREATMENT SYSTEM
3.1 Recirculating Fixed Media Pod Design
Recirculating fixed media pods are to be installed to replace the existing sand filter. The media
shall provide for a total of 138 s.f. of media and be able to facilitate 7,500 gpd meeting effluent
quality as described below with the anticipated influent (septic tank effluent) characteristics as
described below. The system must have NSF/ANSI 40, 245 and 350 certifications. The
preferred alternate is an EZ Treat Model 5L recirculating fixed media filter.
Anticipated Influent Qualitv
BOD5 = 250 mg/I
TSS = 120 mg/I
TN = 60 mg/I
NH3 = 45 mg/I
FOG = 25 mg/I
Alkalinity = 100 mg/I
Anticipated Effluent Qualitv
BOD5 = <15 mg/I
TSS = <15 mg/I
TN = <30 mg/I or 50% removal
NH3 = <10 mg/I
FOG = <5 mg/I
3.2 Media Pod Dosing System
Pumps
Two duplex submersible pump systems (4 pumps) will be substituted in the existing sand filter
recirculation tank to dose the proposed media pod(s). The pumps shall be duplex submersible
turbine effluent pumps capable of providing 38 gpm at 52 ft. TDH. The preferred alternate is a
Sta-Rite Model STEP 30 1.0 HP 5 stage 230 V pump or comparable.
10

Controls
The duplex control system shall meet the requirements set forth in NCAC .1952(D). The panel
shall be NEMA 4X stainless steel watertight enclosure and shall be a 3 float time dosing system
with run/rest times as specified below. The controller shall alternately actuate the duplex pumps
and both pumps shall activate with a high level (LAG) condition. The system shall be equipped
with an audible/visible high level alarm exterior the pump house. New electrical conduit and 30
amp breaker meeting all state and local electrical code shall remain.
The new NEMA 4X duplex panel shall be installed on the exterior of the pump house building to
control only the proposed sand filter dosing duplex pump system. The controls must alternate
pumps each cycle. The timer settings are expressed below.
Timer Setting Calculations
Design Flow Rate
7500
gpd
EZ Treat Recirc Rate
75%
No. Nozzles
48
Flow Rate per Nozzle
1.7
gpm
Run Time/Cycle
10.0
min
Forward Flow per cycle
204
gal.
Cycles per day
36.8
Rest time/cycle
29.2
min
Float Switches
Floats are to be set at the levels specified in the engineering plans prior to the final inspection.
Sealed mercury control floats or similar devices designed for detecting liquid levels in pump tank
effluent shall be provided to control pump cycles. A separate level sensing device is provided to
activate the high-water alarm. Float switch placement is to be set accurately consistent with the
levels depicted in the engineering drawings as indicated below.
RED. OFF: Placed to allow for minimum pump submergence. EL. = 2334.0
DOSE ACTIVATE: Placed to provide the necessary gallons for a dosing cycles. EL. _
2334.75
LAG ON: Placed for sufficient separation from DOSE ACTIVIATE float. Starts both
pumps simultaneously. EL. = 2337.0
ALARM: Placed for sufficient separation from LAG ON float. EL. = 2337.0
11

Electrical Upgrades
None required.
H-Valve Assembly
An H-valve assembly is to be installed for the effluent lines from the new sand filter dosing
pumps to allow either side of the sand filter to be dosed with either pump. The same vault box
can be utilized with the line sizes changed to 1.5" PVC.
3.3 Media Pod Installation
The media pods are to be installed and plumbed prior to the abandonment of the sand filter.
Installation shall be by a specific manufacturer certified installer. The top of pod main housing
shall be set one foot above the established base flood elevation. Installer shall follow selected
media filter manufacturer installation specifications.
12

4.0 SITE PREPARATION & ABANDONMENT
4.1 Sand Filter Dosing System Abandonment
Water to the facility is to be turned off 24 hours prior to abandonment activities. The existing
pump tank is to be pumped out prior to abandonment. The existing sand filter pumps, pump
control panel, supply piping and H-valve piping are to be replaced. Existing pumps and control
panel shall be removed and shall remain with the owner. New pumps and discharge assembly
are to be installed. Existing 2" supply piping and piping in the H-valve is to be removed and
properly disposed of. The wiring for the existing pumps is acceptable but a new control panel
supplied by the pump supplier shall be installed in the same location as the existing.
4.2 Sand Filter Abandonment
It is recommended the new media pods be installed and commissioned before the sand filters
are abandoned. The existing sand filter shall have all piping and plastic covering removed and
properly disposed of. All outlets of the sand filter shall be plugged prior to lime stabilization.
The sand surface shall be raked and have lime applied at a rate to sufficiently raise the pH to
10-12 for a period of 24 hours in the top 6" of the sand. Either hydrated lime (Ca(OH)2 or
quicklime (CaO) my be utilized. Lime (potash) is typically applied to wastewater sludges at a
rate of 20% by mass. This is calculated to be approximately 120 cubic yards of dry lime
(potash).
Once the sand filter material has been stabilized and dried, the berm soil and sand are to be
spread together and then utilized for backfill against the media pods and to complete the
surface drainage as depicted on the proposed grading plans.
4.3 Seeding & Mulching
Fertilizing, seeding, and mulching of disturbed areas shall be completed within ten (10) working
days following completion of system installation and final inspection of the system by the project
engineer or designer. This may require that a temporary seeding mixture be used during given
dates of the year when permanent seeding would not be allowed. Said temporary seeding for
compliance shall be replaced by permanent seeding during allowed seeding dates. Mulching
shall be straw as specified herein.
13

Typical Seed Application Rates
Species: Rate (lb/acre)
Falcon Fescue: 175
Rebel Fescue: 175
Jaguar Fescue: 175
Biltmore Mix: 200
BEA recommends the local seed supplier be consulted for an appropriate seed mixture given
the season of application. Seed mixture changes may be made without prior Project Engineer
approval.
4.4 Erosion Control
These specification and accompanying engineering plans shall not be construed as engineering
plans for erosion control or for erosion control permitting. However, during the construction of
the project, the Contractor shall be required to take the necessary steps to minimize soil erosion
and siltation of rivers, streams, lakes and property. The Contractor shall comply with the
applicable regulations of the appropriate governmental agencies in regard to soil erosion control
and sedimentation prevention.
The Owner will limit the area over which clearing and grubbing and excavation operations are
performed. Prior to the end of each work day on the project, the Contractor shall take the
necessary measures to protect the construction area from erosion.
Temporary and permanent erosion control measures shall be accomplished at the earliest
practicable time. Temporary erosion control measures shall be coordinated with permanent
measures to insure economical effective and continuous erosion control during the life of the
project. Temporary erosion control measures shall include, but are not be limited to the use of
temporary berms, dams, dikes, drainage ditches, silt ditches, silt fences, vegetation, mulches,
mats, netting or any other methods or devices that are necessary. Erosion control measures
installed by the Contractor shall be suitably maintained by the Contractor, until the site is fully
stabilized.
Where excavation is adjacent to streams, lakes or other surface waters, the Contractor shall not
place excavated materials between the excavation and the surface waters. Where live streams
14

are crossed by the project, the Contractor shall exercise particular care to minimize siltation of
the stream. Temporary erosion control measures shall be constructed. These may include but
not be limited to use of coffer dam in the stream, dikes, diversion ditches and/or temporary
sediment traps at the top of the banks, and silt fences on all creek banks. All temporary erosion
control measures shall be acceptably maintained until permanent erosion control measures are
established.
Where runoff on natural ground may cause erosion of the trench or erosion of the backfill in the
trench, the Contractor shall construct temporary erosion control measures. These may include
but not be limited to diversion ditches, check dams and silt basins or other suitable erosion
control measures.
Permanent seeding of disturbed areas shall be accomplished at the earliest practicable time.
Gravel construction entrances shall be installed at all locations used regularly as ingress and
egress to the project site.
Diversion ditches shall be constructed at or near the top of each river bank at river crossings.
Localized stormwater runoff shall be diverted by way of the diversion ditches away from the
disturbed stream bank. Other specified erosion control material shall be used in ditches and
swales.
15

5.0 INSPECTION AND MONITORING PROCEDINGS
5.1 Pre -Construction Meeting
A pre -construction meeting shall be scheduled which shall include the contractor, the NCDENR
DWQ representative, and the engineer or his representative, the system(s) manufacturer
representative and the certified operator. Scheduling this meeting shall be the responsibility of
the installation contractor and all parties shall receive a minimum of one week's notice prior to
the meeting date scheduled. Any changes to the plans requested by the contractor or DWQ
representative will be discussed at this meeting and responded to within 3 working days by the
engineer.
5.2 Intermediate Inspection of the System During Construction
The engineer or an employee of the engineer's firm under direct supervision by the engineer
shall periodically inspect the system installation to verify if the installation is in accordance with
the approved plans. The engineer will not be available to observe the entire installation of all
components but shall inspect the installation with sufficient frequency to reasonably insure that
the quality and methodology of construction was of sufficient consistency to infer the quality and
accuracy of construction of all components. The contractor shall be responsible for keeping the
engineering informed as to the construction schedule for installation of all major system
components.
It is the contractor's responsibility to submit to the engineer evidence of purchase and
installation of all specified components
5.3 Final Inspection & System Start -Up
The engineer must receive all Submittals at least one week prior to final start up and inspection.
Submittals must include cut -sheets for all product specific components, tanks, and piping
installed. The contractor shall be responsible for scheduling the final inspection and start-up with
BEA, NCDEQ and an owner's representative.
Sand Filter Start-up Procedures
All testing shall be facilitated with clean water. Start-up testing shall be required for all electrical
and pressurized components of the WWTP. All system components shall be started and run in
16

"automatic" mode. Testing of all alarm components to insure operation in accordance with
intended function shall be checked and recorded. Functionality of all components shall be
checked and upset conditions checked.
The media pods shall be opened and the spray distribution observed. If spray nozzles are
clogged or unevenly spraying, repair or replacements measures shall be made. Media pods
effluent rates shall be checked in the ratio boxes to insure the 75/25% flow split is occurring, or
adjustments shall be made.
17

6.0 PRODUCT SUBMITTAL SHEETS
in

6.1 Pump Cut -sheets
19

STA-RITE®
The STEP Plus® 4" submersible
filtered effluent pumps in 10,
20, 30 and 50 GPM models offer
dependable performance and
value for high pressure filtered
effluent applications.
These STEP Plus pumps will
handle "dry run" conditions
where other manufacturers fail.
The 10, 20, 30 and 50 GPM are
industry standard 3-314" in
diameter.
■ Filtered Effluent... for residential,
commercial, and agricultural use.
Shell - Stainless steel
Discharge -
10, 20 and 30 GPM models:
fiberglass -reinforced thermoplastic;
50 GPM models: stainless steel
Discharge Bearing - Nylatron®
Impellers - Delrin®
Diffusers - Polycarbonate
Suction Caps - Polycarbonate with
stainless steel wear ring
Thrust Pads - Proprietary spec.
Shaft and coupling - Stainless steel
300 grade
Intake - Fiberglass -reinforced
thermoplastic
Intake Screen - Polypropylene
Jacketed Cord - 300 Volt "SOOV
jacketed 10' leads (2-wire with
ground); optional 20', 30', 50' and
100' lengths available
Delrin® is a registered trademark of
E.I. DuPont de Nemours and Co.
Nylatron° is a registered trademark
of Polymer Corp. ST.E.P. Plus® is a
registered trademark of Pentair Water.
In order to provide the best products
possible, specifications are subject to
change.
ST. ER 1%v
STA-RITE EFFLUENT PUMP
Proven "Floating Impeller"
Staging System - Incorporates
1st -in -class performance, sand
handling and thrust management
staging system with the industry
exclusive "dry -run" design element.
Reinforced engineered composites
and stainless steel, offering high
resistance to corrosion and abrasion.
Discharge - Tested -tough, fiberglass -
reinforced thermoplastic, with proven
internal check valve. Large wrench
flats and rope hole.
Shell - 300-grade stainless steel
pump shell offers high corrosion
resistance.
Shaft - Hexagonal 3/8", 300-grade
stainless steel pump shaft; offers
generous impeller drive surfaces.
Shaft Bearing - Exclusive self-
lubricating Nylatron bearing resists
wear surface from sand.
Motor Bracket - Tested -tough,
fiberglass -reinforced thermoplastic;
incorporates an integral suction
screen.
Customer Service: [phone] ■ Fax Orders: [phone] ■ www.pumps.com ■ Pentair Water ■ Delavan, WI 53115 USA ■ SSS94SES

STA-RITE®
ORDERING •R
•
Catalog
Number
HP
Stages
Max.
Load
Amps
Volts
Phase/
Cycles
Cord
Length
STEP10
1/2
6
10.5
115
1/60
10'
STEP20
1/2
5
10.5
115
1/60
10'
STEP30-05121
1/2
3
9.5
115
1/60
10'
STEP30X20FT-05121
1/2
3
9.5
115
1/60
20'
STEP30X30FT-05121
1/2
3
9.5
115
1/60
30'
STEP30-05221
1/2
3
4.7
230
1/60
10'
STEP30X20FT-05221
1/2
3
4.7
230
1/60
20'
STEP30X30FT-05221
1/2
3
4.7
230
1/60
30'
STEP30-10221
1
5
9.1
230
1/60
10'
STEP30X20FT-10221
1
5
9.1
230
1/60
20'
STEP30X30FT-10221
1
5
9.1
230
1/60
30'
STEP30-15221
1-1/2
6
11.0
230
1/60
10'
STEP30X20FT-15221
1-1 /2
6
11.0
230
1/60
20'
STEP30X30FT-15221
1-1 /2
j 6
11.0
230
1/60
30'
STEP50-10221
1
3
9.1
230
1/60
10'
STEPSOX20FT--10221
1
3
9.1
230
1/60
20'
STEP50X30FT--10221
1
3
9.1
230
1/60
30'
STEP50-15221
1-1/2
4
11.0
230
1/60
10'
STEP50X20FT--15221
1-1/2
4
11.0
230
1/60
20'
STEP50X30FT--15221
1-1/2
4
11.0
230
1/60
30'
PERFORMANCEPUMP
Catalog
Number
Gallons/Liters
per Minute
Head
(Feet/Meters)
PSI
STEP10
0/0
255/78
110
5/19
228/69
99
10/38
170/52
74
12.5/47
120/37
52
STEP20
0/0
180/55
78
7.5/28
160/49
69
15/57
135/41
58
20/76
115/35
50
2 5/95
75/23
32
STEP30-05221 &
STEP30-05121
0/0
102/31
44
8/30
100/30
43
16/61
9 7/30
42
24/91
84/26
36
30/114
68/21
29
36/136
47/14
20
STEP30-10221
0/0
171/52
74
8/30
166/51
72
16/61
162/49
70
24/91
140/43
61
30/114
114/35
49
36/136
78/24
34
STEP30-15221
0/0
206/63
89
8/30
203/62
88
16/61
199/61
86
24/91
176/54
76
30/114
146/45
63
36/136
101/31
44
STEP50-10221
0/0
90/27
39
10/38
86/26
37
20/76
83/25
36
30/114
79/24
34
40/152
71/22
31
50/190
62/19
27
60/227
49/15
21
70/265
27/8
12
STEP50-15221
0/0
120/37
52
10/38
115/35
50
20/76
110/34
48
30/114
104/32
45
40/152
95/29
41
50/190
82/25
35
60/227
65/20
28
70/265
36/11
16
Customer Service: [phone] ■ Fax Orders: [phone] ■ www.pumps.com ■ Pentair Water ■ Delavan, WI 53115 USA ■ S5594SES

250
F- 200
W
W
LL
Z
50
STA-RITE®
CAPACITY LITERS PER MINUTE
0 25 50 75 100
I I
300
IN
�O
A
0 10 20
CAPACITY GALLONS PER MINUTE
CAPACITY LITERS PER MINUTE
0 25 50 75 100 125 150 175
I I I I I
225
200
175
r 150
W
W
LL
Z 125
❑
Q
W
= 100
J
r
Or 75
50
25
-80
CAPACITY LITERS PER MINUTE
0 25 50 75 100
I I I I I
300
STFA2
o r�2tia
250
W
-60 cc r 200
W W
F- W
W LL
Z
Z
Q w 150
-40 = _
J
J
O Or 100
F-
-20
10
30
----------
.-------
--'.------
---'
----
NE
MEN
MMMMMM-----
`
�-
------ENV
------MMMM
--------
M
mmmm�m-„
0 10 20 30 40
CAPACITY GALLONS PER MINUTE
50
0 10 20
CAPACITY GALLONS PER MINUTE
10
30
CAPACITY LITERS PER MINUTE
0 50 100 150 200 250 300
I I I iT+ I
35
30
25 cc
W
r
W
2
20 Z
O
a
W
15 =
J
r
O
10
5
p — 0
50 0 10 20 30 40 50 60 70 80
CAPACITY GALLONS PER MINUTE
120
60
100
50
¢
r
80
LU
40
W
LL
Z
Z
❑
p
Q
60
'LJ
W
30
2
J
J
F-
0
40
20
F-
20
10
Customer Service: [phone] ■ Fax Orders: [phone] ■ www.pumps.com ■ Pentair Water ■ Delavan, WI 53115 USA ■ S5594SES
3

Planning
&Project
Management
/ Civil
Engineering
Surveying
;"
Environmental
Engineering
&
Services
17 Arlington Street / Asheville NC 28801
www.hrookseaxom / 828-2324700
PISGAH WILDLIFE EDUCATION FACILITY
TRANSYLVANIA GOUN'?'Y NORTH GAROLINA
I�YYdiSTE'�Y�I TER IRRIGATION SYS7"E1V!
CALGUL,� TIONS
PREPARED F'OR:
NC WILDLIFE RESOURCES COMMISSION
1720 MAIL SERVICE CENTER
RALEIGH, NC 27699w 1720
FINAL DESIGN - NOT RELEASED FOR CONSTRUCTION
ORIGINAL:
REVISED:
tti�1411 I l f f !! ll//
ti p *�"O
DECEMBER 23, 2019
JuNE 30, 2020
BROOKS ENGINEERING ASSOCIATES PROJECT NO.: 502819

TABLE OF CONTENTS
1.0 Calculations
1.1 EZ Treat Buoyancy
1.2 TDH Calculations
- Recirc to EZ Treat Pod
1.3 Tank Size and Float Settings
- Timer Settings
1.4 WWTF Process Calculations
- Treatment system effluent parameters

1mu CALCULATIONS

1.1 EZ Treat Buoyancy

BOUYANCY CALCULATIONS
For Tank: EZ Treat pods
TANK
Soil Depth = 3 ft
3 feet
Anti-bouyancy collars
Tank Width 7.50 ft
Tank Height 3.17 ft
Tank Length 20.10 ft
Volume of Tank 477.43 Cubic Feet
Tank Weight (dry) 11500 Ibs
Up Force from Displaced Water: (assumes water to tank top) 29,743.6 Lbs
Minimum Tank Water Volume 0 gal
Weight of Water Permanently in Tank 0.0 Ibs
Volume of Soil above Anti-bouyancy collars 361.80 Cubic Feet
Soil Density 115 lb/c.f.
Soil Weight 41607 lb
Down Force From Tank, Water and Soil: 43,107.0 Lbs
Factor of Safety: 1.449287 -Factory of Safety OK
Predicted Height of Water at Tank for Bouyancy 4.59 ft

1.2 TDH Calculations
- Kecirc to EZ Treat Pod

Recirc Tank to Pod
TDH CALCULATIONS
TDH = DH + hm
where:
DH = elevation head
hm = major pipe losses, utilize Hazen Williams equation with equivalent lengths for fittings
d4.87) (Q/C)1.85 where: Q in cfs, L in feet, d in ft.
no user input
:user input req'd
Piping: isch. 40 PVC
Diameter= 1 1/2 ;inches (nominal) equals 1.59 inches (ID)
0.1325 ft.
NC111F�
INPUTS
Elevation Head Loss
Major Losses
Equiv. Length
Sum
No. inputs IFittings
1
Pie
Details
Initial Elev.
2334.0
Final Elev.
2341.5
L
40
"C"
150
(FT)
Eq. Length
40.7
6
90 DEG ELL
5
30.00
6
45 DEGELL
3
18.00
0
90 DEG
TEE
7
0.00
10
COUPLING
105
15.00
2
GATE VALVE
1
2000
24
Nozzles
15
360.00
0
ANGLE VALVE;
22
0.00
1
CHECK VALVE'
14
14.00
q m
DH
hm feet
TDH
PSI
Velocit
10
7.50
3.47
10.97
4.7
1.82
20
7s501
12.53
20.03
8.7
3.63
30
7.50
26.56
34.06
14.7
5.45
40
7.50
45.25
52.75
22.8
7.27
50
7.50
68A0
75.90
32.9
9.08
60
7.50
95.88
103.38
44.8
10.90
70
7.50
127.56
135.06
58.5
12.72
80
7.50
163.34
170.84
74.0
14.53
90
7.50
203.16
210s661
91.2
1 16.35
100
7.50
246.93
254o431
110.1
1 18.16
110
7.50
294.61
301111
130.8
1 19.98

1.3 Tank Size and Float Settings
-Timer Settings

Pisgah Education Center Media Pod Recirculation Timer Setters
Design Flow Rate 7500 gpd
EZ Treat Recirc Rate 75%
No. Nozzles 48
Flow Rate per Nozzle 1.7 gpm
Run Time/Cycle 10.0 min
Forward Flow per cycle 204 gal.
Cycles per day 36.8
Rest time/cycle 29.2 min

1.4 WWTF Process Calculations
= Treatment system effluent parameters

PROCESS DESIGN CALCULATIONS
Pisgah Education Center Media Pod Process Calculations
Design Flow Rate 7500 gpd
EZ Treat Recirc Tank Influent BODS 250 mg/l
EZ Treat Recirc Tank BOD5 Effluent 2.8 mg/I
EZ Treat Recirc Tank NH3 Effluent 0.2 mg/1
EZ Treat Recirc Tank TSS Effluent 27.7 mg/1
BODs Process Reduction
Recirculation
5L Pods 2
Septic��`,
,rif, Recirc Tank
i,
Influent Influent
BOD (mg/1) BOD (lb)
250.0 15.6
Dose Tank
2 Pod
Pod Loading Effluent¢ Effluent¢ % BOD
Rate (lb/pod) BOD (lb) BOD (mg/1) Reduction
15.6 0.2 2.8 98.9%
Criteria: 1) Typical Organic Loading for Pod 250 mg/I
Hydraulic Loading for Pod 4119 gpd
with 138 s.f. of media 29.85 gpd/sf
Resulting Loading Rate (lb BOD per s.f.) 0.14313525
Resulting Loading Rate (lb/pod) 8.6
2) Per NSF 350 Certification 90+% Effluent Removal at typical loading rates.
3) Calculated with each pod treating 15.6 lb to a 90% level

PROCESS DESIGN CALCULATIONS
2 Pod
2 Pod
2 Pod
TN Process Reduction Influent Influent Pod Loading
Effluent
Effluent
% TN
TN (mg/1) TN (Ib) Rate (lb/pod)
TN (lb)
TN (mg/1)
Reduction
Recirculation 60 4 2.0
1.75
27.7
53.3%
Resulting NH3, with less than 10% NH3
0.2
Criteria: 1) Septic Tankage will convert all TKN to NH4
2) Typical TN Loading for Pod 60 mg/1
Hydraulic Loading for Pod 4119 gpd
with 138 s.f. of media 29.85 gpd/sf
Resulting Loading Rate (lb BOD per s.f.) 0,03435246
Resulting Loading Rate (lb/pod) 5.5
3) Per NSF 245 Certification data demonstrates >50% TN removal
Effluent Removal expressed above assumes 50% of the influent TN is removed with
first recirculation and 40% based on the second recirculation
4) >80% of TN will be nitrates, with less than 10% NH3
2 Pod 2 Pod 2 Pod
TSS Process Reduction Influent Influent Pod Loading Effluent Effluent % TSS
TSS (mg/1) TSS (lb) Rate (lb/pod) TSS (lb) TSS (mg/1) Reduction
First Recirculation 120 8 3.8 0.9 14.4 87.9%
Criteria: 1) Typical TSS Loading for Pod 120 mg/1
Hydraulic Loading for Pod 4119 gpd
with 138 s.f. of media 29.85 gpd/sf
Resulting Loading Rate (lb TSS per s.£) 0,06870492
Resulting Loading Rate (lb/pod) 11.0
2) Effluent Removal expressed above assumes 70% of the influent TSS is removed prescribed loading rate
based on manufacturer's and NSF data