Hays County Development ServicesP.O. Box 1006 / 2171 Yarrington Road

San Marcos, TX 78667(512) 393-2150

Authorization to Construct an On-site Sewage FacilityPermit #: 2017-32299

Location:

Mailing Address:

Owner:

12475 TRAIL DRIVER, AUSTIN, TX 78737

Brumax Enterprises Ltd Co.

CAVALLO PARK Section: Block: Lot: 1

12901 Trails End, Austin, TX 78737

AUTHORIZATION IS HEREBY GIVEN TO CONSTRUCT AN ON-SITE SEWAGE FACILITY ON THE ABOVE DESCRIBED PROPERTY.

Approval is hereby granted for the construction as shown on the submitted planning material.

ANY MODIFICATIONS TO SUBMITTED PLANS REQUIRE APPROVAL BY HAYS COUNTY DEVELOPMENT SERVICES PRIOR TO INSTALLATION.

CONTACT HAYS COUNTY DEVELOPMENT SERVICES FOR REQUIRED INSPECTIONS.

This Authorization to Construct is valid for twelve months from the date of issuance.

COMMENTS:INSTALL ACCORDING TO REVISED PLANS BY DANIEL BALBOA, R.S., DATED 8-15-17.

Note: The On-site Sewage Facility construction must meet all TCEQ Regulations and Hays County Rules for On-site Sewage Facilities. If unforeseen and/or adverse conditions are encountered (including, but not limited to excessive rock, seepage, or high water table) stop construction and contact HAYS COUNTY DEVELOPMENT SERVICES. Revised planning materials and Authorization to Construct may be required.

Agency Official Date

9/5/2017

Hays County Development ServicesP.O. Box 1006 / 2171 Yarrington Road

San Marcos, TX 78667(512) 393-2150

Class "A" Building/Development PermitPermit #: 2017-32299

Location:

Mailing Address:

Owner:

12475 TRAIL DRIVER AUSTIN TX 78737

Brumax Enterprises Ltd Co.

CAVALLO PARK Section: Block: Lot: 1

12901 Trails End, Austin, TX 78737

Valid for one year from date of issuance.

The Development Application has been reviewed and it has been determined that the development WILL NOT be in the 100 year floodplain.

Warning:

The flood hazard boundary maps and other flood data used by the County in evaluating flood hazards to proposed developments are considered reasonable and accurate for regulatory purposes. Flood Plain determinations are based solely on the property owner’s indication of the proposed site. On occasion greater floods can and will occur and flood heights may be increased by man-made and natural causes. The County cannot guarantee the property will not flood. Exempting the property owner from the Flood Plain Management Regulations does not create any liability on the part of the County or any officer or employee of the County in the event that flooding and/or flood damage does occur. Ultimately responsibility of locating the home/structure outside of the flood plain rests with the property owner. The County recommends the property owner contact a surveyor prior to construction for precise determination.

Description:Three New Office/Warehouse

Agency Official Date

Floodplain Administrator Date

8/25/2017

8/28/2017

Hays County Development Services2171 Yarrington RoadSan Marcos, TX 78667

(512) 393-2150

Notice of Approval/Final InspectionPermit #: 2017-32299

Location:

Mailing Address:

Owner:

12475 TRAIL DRIVER, AUSTIN, TX 78737

Brumax Enterprises Ltd Co.

CAVALLO PARK Section: Block: Lot: 1

12901 Trails End, Austin, TX 78737

THIS IS TO CERTIFY that the above On-site Sewage Facility meets or exceeds the basic requirements established by the Texas Commission on Environmental Quality and Hays County. License to operate this facility is hereby granted to the owner. This license simply grants permission to operate this facility; it does not guarantee its successful operation. Routine maintenance and proper functioning are the sole responsibility of the owner.

KEEP THIS LICENSE with important papers. You may need it when selling your house or if a malfunction occurs. The above referenced On-site Sewage Facility has been inspected by Hays County for compliance with the rules and based on information provided in the application, has been found to comply with the requirements of those rules.

This certification does not extend to the materials, workmanship or fabrication of the On-site Sewage Facility so as to express or imply to the owner or installer of the facility any warranty by or rights against Hays County or any of its agencies, as to the quality or durability of the facility nor compliance with the owner’s individual specifications and requirements, but soley relates to the facility meeting the requirements of Hays County in effect as of this date.

This approval simply grants permission to operate this facility; it does not guarantee its successful operation. Rountine maintenance and proper functioning are the sole responsibility of the owner.

This approval remains in effect until such time as there is evidence that this facility is not operating properly and may constitute a threat to the health of the people of this county. The specified backfill should not be altered or covered in any way except for sodded grass or grass seed cover to promote evaporation and transpiration. All plumbing in the house should be kept in good repair to minimize flooding of the drainfield.

Agency Official Date

9/28/2017

Daniel Balboa, R.S.P.O. Box 574

Buda, Texas 78610balboaseptic@gmail.com

(512) 899-2757

August 15, 2017

Hays County Development ServicesPO Box 1006San Marcos, TX, 78667

Re: On-Site Wastewater Plan For:Brumax Enterprises Ltd12475 Trail DriverLot 1, Cavallo ParkAustin, Texas 78737

Dear Designated Representative,

Enclosed is a copy of the revised on-site sewage facility plan for the three proposedoffice/warehouses at the above referenced property.

In response to your phone call about the strength of the wastewater issue, I have revisedthe OSSF plan.

Sincerely,

Daniel Balboa, R.S.

cc: Kenny Erwin

Page 1 of 19

Page 2 of 19

On-SiteWastewater System

For:

Brumax Enterprises Ltd

12475 Trail DriverLot 1, Cavallo Park

Austin, Texas 78737

System summary:System Designed For: 180 Gallons Per Day500 Gallon Trash TankAerobic System, NuWater B-800 (trash compartment used for flow equalization)Submersible Effluent Pump, Myers ME4, 0.4hpRJR Control Panel, Model LPD-DTSubmersible Effluent Pump, Pentair STEP20NuWater Control Panel with cycle timerNetafim Effluent Meter, Model 36WMR2T10Non-Chlorinated EffluentDrip Irrigation Disposal with Netafim Bioline 0.6gph tubing 900 sq.ft

August 15, 2017

Daniel Balboa, R. S.P.O. Box 574

Buda, Texas 78610(512) 899-2757

Page 3 of 19

Calculations:

Maximum Hydraulic Load:OSSF sized to accommodate:six office/warehouses with three employees at 8 Gallons Per Day per employeeand one customer at 6 Gallons Per Day(6 x 3 x 8) + (6 x 6) =180 Gallons per day

Maximum Organic Load:Organic Load is expected to be equivalent to typical residential wastewater = 300 mg/L

300 mg/L x 3.8 L/ Gallon x 180 Gallons/Day =0.45 lbs BOD Per Day454,000 mg/L

Proposed NuWater Treatment Tank Maximum Organic Load: 1.95 lbs BOD Per Day

Limitation on Types of Tenants and Types of Wastewater:No high-volume wastewater generating tenants should be allowed. This OSSF is sized for restroom use only.Examples of types of tenants are: cabinet maker, residential service trades such as plumber, electrician, etc. Nofood preparation is allowed. A/C condensate should not be plumbed into the OSSF. No shower or bathtub use isallowed. No chemicals except the occasional toilet bowl cleaning chemical (tank tablets should not be used). Mopsinks and floor drains should be discouraged from being installed due to chemicals, silts, and other materials thatmight harm the OSSF.

Trash Tank Proposed: 500 GallonsEqualization Tank Proposed: 431 GallonsAerobic Tank Proposed: 800 GPDPump Tank Proposed: 854 Gallons

Hydraulic Flow Equalization Tank Calculations:431 Gallon Tank with 53” Volume Height and 8.13 Gallons Per Inch

Volume Required above alarm: =180 GallonsProposed Reserve Volume Above Alarm On: 23" x 8.13 gallons per inch =187 Gallons

Volume Proposed Between Pump On and Alarm On: 75% x 180 GPD =135 GallonsProposed Volume: 17" x 8.13 gallons per inch =138 Gallons

Dosing Calculations:A combination of open Tees, semi-open Tees with ball valves, and small diameter pipes are to beinstalled to reduce the flow going to the aerobic tank down to approximately 5.00 gpm.Pump will be 5ft below ground 5.00ftGrade difference from tank to aerobic tank 0.00ftFriction head 20ft of 1" PVC 20ft x 1.92ft/100ft 0.38ftPressure head 2.00ftTotal head on pump 7.38ft

A Myers ME4, 0.4 hp, 115 volt submersible pumps are specified.Equivalent pump may be used with designer and inspector approval.From the performance curve chart, this pump will flow at least 58GPM at 8ft of head.

Page 4 of 19

Calculations (continued):

Dosing Volume:Program timer with an “on” time of 1.5 minutes / “off” time of 58.5 minutes1.5 minutes x 5.00 gallons per minute------------------------------- =7.50 Gallons/Dose

Proposed Doses per day: 180gpd/7.50 gallons per dose----------- 24 doses per day

A RJR Controls control panel is to be used, Model ALT-DT with a Omron brand cycle timer.The timer is to be programmed to operate the pump for 1.5 minutes “on” twenty four times a day with aresting phase of 58.5 minutes between operations.

Drainfield Required:180gpd ÷ 0.1 gpd/ft

2=1800ft2

Length of Tubing Required:1800ft

2÷ 2ft spacing between tubing lines =900ft of Tubing

Brand of tubing required: Netafim's Bioline 0.6 gallons per hour

Length of Tubing Proposed:Zone A: 900 linear feet, Three sections of tubing at 300ft =900ft Tubing

Final Pump Tank Calculations:751 Gallon Tank (See Pump Chamber Increment chart on following page)

Volume Required above alarm: =180 Gallons

Alarm float will need to activate the alarm at 11" below the pump tank inlet.Alarm on at 39” and Pump Chamber Inlet at 50”751 Gallons – 568.1 Gallons -------------------------=182.9 Gallons

Volume Proposed Between Pump On and Alarm On: =180 GallonsPump On at 27” and Alarm On at 39”568.1 Gallons – 375 Gallons -------------------------=193.1 Gallons

Page 5 of 19

Calculations (continued):

Flow Calculations: Dosing FlushingPump intake will be 5ft below ground 5.00ft 5.00ftElevation Head Tank to Drainfield 0.00ft 0.00ftFriction head 60ft of 1" Supply Line at 4.50gpm 60ft x 1.80ft/100ft 1.08ft 0.00ftFriction head 60ft of 1" Supply Line at 12.50gpm 60ft x 11.00ft/100ft 0.00ft 6.60ftFriction head 65ft of 1" Flush Line at 8.0 gpm 65ft x 4.60ft/100ft 0.00ft 2.99ftFriction head through fittings and valves 1.00ft 3.00ftFriction head through tubing during field flush 0.00ft 6.00ftPressure head 40 psi x 2.31 ft per psi 92.40ft 0.00ftPressure head 25 psi x 2.31 ft per psi 0.00ft 57.75ftTotal head on pump 99.48ft 81.34ft

A Pentair STEP20, 0.5 hp, 115 volt submersible pumps are specified.Equivalent pump may be used with designer and inspector approval.From the performance curve chart, this pump will flow at least 21GPM at 99.48ft of head.From the performance curve chart, this pump will flow at least 23GPM at 81.34ft of head.

900ft of drip tubing with emitters spaced every 2ft = 450 emitters.Netafim's Bioline drip tubing will flow approximately 0.62 gallons per hour (0.01 gpm) at 10-40 psi.450 emitters x 0.01 gpm per emitter = 4.50 gpm180 gallons per day = 40 minutes per day (total run time)

4.50 gpm

An Aqua Klear control panel is to be used with an Omron brand cycle timer.The timer is to be programmed to operate the pump for 6.67 minutes “on” 6 times a day with aresting phase of 233.33 minutes between operations.

Dosing Volume 6.67 Minutes x 4.50 Gallons per Minute--- 30.00 gallons per doseMaximum doses per day 180 gpd ÷ 30.00 gallons per dose --------6 doses per day

Flushing Requirements:Netafim recommends at least 1.6 gpm velocity through each distal end of each section of tubingto provide adequate flushing. This system has five sections of tubing with a minimum flow rate of8.00 gpm. In addition to this flow the emitters are flowing 4.50 gpm during the flushing event.This is a total of 12.50 gpm. The friction lost through the supply and return lines during flushinghas been accounted for in calculating the total head on the pump (above).

Page 6 of 19

Tank Instructions:Berm, swale, and gutter to divert stormwater away from the tanks.All tanks are to be located in an area where they will be protected from automobiles, heavy equipment, and drainage or pondingthat could cause water infiltration into the tanks.All tanks shall be set level on a pad of sand, pea gravel, or sandy loam with a minimum depth of 4” (washed sand preferred).The tanks are to be installed with their lids no deeper than 18” beneath the finish grade or no deeper than the manufacturer’sspecifications. Backfill the excavation with clean, imported, sandy loam (class III soil) with gravel no larger than 1/2".The inlets, outlets, seams between the lids and walls of the tanks, the manhole openings and risers are to be sealed watertight.Pipes on inlet side of septic tank shall have a minimum fall of 1/8” per foot.All connecting pipes for the tanks are to be Schedule 40 PVC and chemically welded in place. These pipes are to be mortaredor epoxied (swimming pool epoxy preferred) where they enter or leave the tank, and these junctions are to be water tested.All tanks shall be filled with water high enough to cover the connecting pipes twenty-four hours prior to inspection.All turns in the sewer line prior to trash tank shall be made with sanitary fittings and a maximum of 45 degree bends.Risers shall be installed on all manhole openings.Risers must be airtight and watertight. There should be no way for water to enter the tank except through the sewer pipe.The pump is to be wired on a separate breaker than the alarm.All electrical components should be installed high enough to prevent flooding from storm runoff water.All wiring exterior to the tank shall be in conduit. The conduit entering the manhole riser should be sealed on the end to preventgasses and water from entering the conduit.All wiring for the pump and alarm must be made in accordance with the National Electric Code.The electrical connections for the leads to the pump and float switches with the wires from the building are to be made in anunderground junction box located near the manhole riser for the pump tank or they are to be made inside the manhole riser in ajunction box with fittings approved for exposure to caustic and explosive gases.Water softeners and garbage disposals should not be installed nor used in a building connected to this wastewater system.

Drainfield Instructions:Berm, swale, and gutter to divert stormwater away from the drainfield.The area of the drainfield is to be protected prior to construction from heavy traffic that could compact the soil.No construction on the drainfield is to be performed during or after a rain. The soil must be dry enough that no noticeablecompaction of the soil occurs during construction.If imported soil is to be added, the grass in the area of the drainfield is to be removed raising the grade. Failure to remove thismaterial can create a conduit for effluent to blow-out. No trees are to be removed without the owner’s approval.No grade cuts are to be made in the area of the drainfield.If the drainfield is specified to be constructed above the native material, all large loose rock is to be removed prior toconstruction, and the native surface is to be tilled or scarified.The imported fill material to be used during construction is to be approved by the health authority as well as Daniel Balboa, R.S.prior to construction.The drip tubing is to be installed by cutting trenches, plowing, or laying the tubing on scarified ground. The tubing is to beinstalled parallel to the contours with 2ft spacing between the lines of tubing.Netafim Bioline drip tubing (0.6 gph) only is to be used for the drip tubing.All pipe and tubing is to be buried with at least 6” of soil cover.If help is needed in layout of the fields or tanks call Daniel Balboa, R.S. at 512-899-2757.Should seepage or other underground water be found during excavation of the distribution trenches, stop all construction andnotify Daniel Balboa, R.S. immediately.The finished grade of the backfill in the drainfield area must be graded so that no water can pond over the drainfield or uphill ofthe drainfield.Never allow the pump to pressurize the tubing in the drainfield for more than 15 minutes at a time, and always allow the field torest for at least a few hours prior to pressurizing it up again. Failure to follow this instruction is likely to result in preferentialflow paths to be created in the soil that run from the tubing straight to the surface. Once these paths are created, it takes months,if ever, for them to heal.Once the system is in use the drainfield must be maintained at all times (mowed).

Inspection Schedule:This inspection schedule must be adhered to in order to demonstrate compliance.This schedule is independent of the authorized agent’s (health department’s) schedule.

Arrange to meet a representative from Daniel Balboa, R.S. prior to construction.A sample of the backfill material to be used is to be available for inspection at this meeting.

1st Inspection: When tanks and connecting pipes have been installed and filled for twenty-four hours.When the drip tubing and manifold pipes are installed.When pump and alarm are installed and operational.

Final Inspection: When system is complete and landscaping finished.

Page 7 of 19

NOTICE TO THE OWNER

1. Design Parameters: This wastewater system has been designed or will be designed on information provided by the client, and based on siteconditions at the time of design. Daniel Balboa accepts no responsibility for incorrect information or changes in site conditions.

2. Usage Limitation: The maximum peak usage limitation is gallons per day. Daniel Balboa highly recommends that the maximummonthly usage should be no more than gallons ( gallons per day average).Average Daily Usage is recommended to be no more than 65% of the maximum usage. The Owner shall inform the property’s occupants ofthe gallon per day Usage Limitation and, upon sale or transfer of the property, the Owner shall inform the property’s buyers of the UsageLimitation.

3. License: The Owner shall acquire a license to operate this wastewater system from the appropriate local governing agency. A license is notautomatically issued when inspections are complete.

4. Grade Cuts: Any grade cuts made within twenty-five (25) feet downhill or to the side of the drainfield will likely void the license and maycause failure of the system. It is very common for such grade cuts to be considered for construction of foundations, driveways, sidewalks, pools,retaining walls and the like. The Owner is responsible for seeing that these cuts are not made.

5. Setbacks: The Owner shall adhere to the drainfield minimum setbacks and assure that all improvements made on the property are not over thesystem and are outside of the setbacks. It is the Owner's responsibility to assure that buildings, houses, irrigation systems, patios, ponds, storageunits, water lines, water wells, or other structures or improvements are not constructed above the system or inside the setbacks. The Owner shallrefer to these plans, homeowner’s association rules, the local regulations, and TCEQ’s on-site wastewater rules regarding the exact setbacks.

6. Trees: The Owner understands that damage to trees may result from installation and/or operation of the system and hereby relieves DanielBalboa of any and all claims for damage to trees.

7. Vehicles: It is the Owner’s responsibility to assure that automobiles, campers, motor homes, trailers, or other vehicles are not parked or drivenabove the system or inside the setbacks.

8. Water Softening and Reverse-Osmosis: The backwash from water softening and reverse osmosis units must not be plumbed into any part ofthe system. Water softening units harm the system by injecting high salt concentration solutions into it and reverse osmosis units harm the systemby hydraulically overloading it.

9. Sprinkler Systems & Drainage Systems: No sprinkler system should be installed on or near the drainfield. Rainwater drainage should not bedirected toward the drainfield. Excessive water falling on or uphill of the drainfield can cause the drainfield to fail.

10. Repairs: The Owner shall repair this wastewater system as needed. Typical repairs include, but are not limited to: replacing soil and grassover the system’s drainfield; replacing the pump and other components which become damaged, worn or ruined; and replacing crushed, collapsed,or cracked system components.

11. Large Surges Of Wastewater: Large bathtubs should not be drained all at once, nor should several loads of laundry be washed all at once.Large volumes of water (20 gallons or more) entering the wastewater system rapidly will cause turbulence in the treatment tank. This turbulencecauses solids in the tank to be transferred out of the tank. This solids transfer will cause some part of the system to become plugged.

12. High Strength Waste: No commercial food preparation or other processes that might create high strength wastewater are allowed.

13. Hazardous Materials: Chemicals that might kill off the organisms in the tanks and drainfield that are responsible for treating the wastewatershould not be allowed to enter the wastewater system. Some examples are: gasoline, paint thinner, paint, antibiotics, and film developmentchemicals.

14. Maintenance: The Owner shall maintain this system as needed. Typical maintenance includes, but is not limited to:a) maintaining grass above the system’s drainfield and other areas of disturbed soilb) replacing chlorine, if requiredc) regularly inspecting the system to ensure that effluent is not surfacingd) regularly inspecting and repairing the plumbing fixtures, especially toilets, to make sure that leaking fixtures even unapparent leaks are

not overloading the systeme) conserve water by: using 2 ½gpm shower heads, 1.6gpm toilets and 2.2gpm faucet aerators, not running water continuously during hand

washing, teeth brushing, rinsing dishes, cleaning vegetables, etc.f) limiting the use of garbage grinders (it is preferred that no garbage grinder be used)g) not disposing of cigarette butts, trash, coffee grounds, tampons or napkins down the drainh) not adding septic tank additivesi) limiting the quantity of soaps, detergents, bleach, and drain cleaners that enter the systemj) legally removing sludge, scum, and trash from the tanks, as needed (at least every 3 years)

Page 8 of 19

Page 9 of 19

Aerator

3/4" Schedule 40 PVC notmore than 100 LFfrom Plant

Alarm On

Timer On

Pump Off

Invert ofpumpchamberinlet

20"

7"

12"

14"

Install tank on a compacted pad of sand, pea gravel, or sandy loam (minimum depth of pad is 4 inches).Tank excavation is to be backfilled with sand, pea gravel, or sandy loam.

No gravel or rock larger than 1/2 inch is allowed in the 4 inch pad or in the backfill material.

Use an Aqua KlearControl Panel

In Final Pump ChamberCycle Timer Settings:

6.67 Minutes On/ 233.33 Minutes Off12 Doses Per Day

Check ValveSwing-Type

Sch 80 PVCUnion

Sample Port(unthreaded)

1/8 Inch Anti-Siphon Hole

Secondary PanRequired

20 Inch Tuf-Tite Risers and LidsInstalled Watertight and Secured with

Stainless Screws (8)

Cross Section Detail of Tanks

NuWater B-800

500 Gallon Trash Tank

Use a RJRControl Panel, Model LPD-DT

In Equalization ChamberCycle Timer Settings:

1.50 Minutes On/ 58.5 Minutes Off24 Doses Per Day

Alarm On

Timer On

Pump Off

Inlet

8"

5"

23"

17"

Effluent MeterNetafim Model 36WMR2T10

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RJR Controls LLCP.O. Box 51Spicewood, TX 78669(830) 693-1499rjrcontrols.com

LPD-DT CONTROL PANELSCustom PanelsLift Station Panels • SLS Panels • LPD-B Panels • LPD-B2 Panels • LPD-DT PanelsAlternating PanelsReplacement Aerobic PanelsStand Alone AutoDialersMonitoring ServicesContact Us

The LPD-DT Control Panel is designed to monitorpump tank levels and operate up to a 1/2 HP 120VAC pump on a dosing timer. The Alarm can beused as a High Level or Low Level Alarmdepending on the type of float used. This controlpanel has one incoming 120 VAC circuit. There are2 circuit breakers in this control panel, 1 for thealarm and 1 for the pump. Features

4X Enclosure with hinge door and locking latch.Test and Silence Switch.Two Circuit Breakers.360 degree red light.Dosing Timer and Pump Control Relay.120 VAC Pizo electric buzzer.Captive terminal strip for field wiring.Two year limited warranty.

RJR Controls Monitoring Service http://www.rjrcontrols.com/lpd-dt.htm

1 of 1 11/12/2015 4:22 PMPage 18 of 19

Scale 1" = 30ft

Notes to Installer:

All Parts of the OSSF are to be at least

10ft setback from any water line.

All Parts of the OSSF except drip

irrigation drainfield are to be at least 5ft

setback from the house and any surface

improvement.

All Parts of the OSSF are to be at least

5ft setback from the property line and at

least 1ft setback from any easement.

The drip irrigation drainfield is to be at

least 25ft setback from any sharp break.

Ball Valve For Periodic Flushing

Of Tubing - Normally Closed

Cover With Valve Box

Two-Way Cleanout

Two-Way Cleanout

Two-Way Cleanout

5ft Setback from Building

500 Gallon Trash Tank

3" Sch 40 PVC

with 1/8" fall per foot

3" Sch 40 PVC

with 1/8" fall per foot

Existing Septic Tank

To be properly abandoned

Per 30 TAC, Ch 285

Aerobic Tank

NuWater B-800

100 Micron Filter

1" Arkal Super

1" Sch 40 PVC Flush Line

1" Sch 40 PVC Supply Line

3" Sch 40 PVC

Netafim Bioline 0.6GPH Drip Tubing

900 Linear Feet Required

Five Sections Maximum

180 Ft Maximum Length Per Section

Vacuum

Breakers

Proposed Water Lines

Water Well

Water Meter

1

0

0

f

t

3" Sch 40 PVC

with 1/8" fall per foot

5ft Setback from Property Line

1ft Setback from Easement

Profile Hole No. 2

100

1

0

1

1

0

2

Water Line Crossing

See Detail

Page 19 of 19

Daniel Balboa, R.S.P.O. Box 574

Buda, Texas 78610balboaseptic@gmail.com

(512) 899-2757

April 5, 2017

Hays County Development ServicesPO Box 1006San Marcos, TX, 78667

Re: On-Site Wastewater Plan For:Brumax Enterprises Ltd12475 Trail DriverLot 1, Cavallo ParkAustin, Texas 78737

Dear Designated Representative,

Enclosed is a copy of an on-site sewage facility plan for the three proposedoffice/warehouses at the above referenced property.

The proposed OSSF is designed for a three office/warehouses with no more than sixemployees per office/warehouse. The design flow is 180 gallons per day.

Please call if I can be of more assistance with this project.

Sincerely,

Daniel Balboa, R.S.

cc: Kenny Erwin

Page 1 of 18

Page 2 of 18

On-SiteWastewater System

For:

Brumax Enterprises Ltd

12475 Trail DriverLot 1, Cavallo Park

Austin, Texas 78737

System summary:System Designed For: 180 Gallons Per Day500 Gallon Trash TankAqua Klear Aerobic System, Model AK6BES3(trash compartment used for flow equalization)Submersible Effluent Pump, Myers ME4, 0.4hpRJR Control Panel, Model LPD-DTSubmersible Effluent Pump, Pentair STEP20Aqua Klear Control Panel with cycle timerNetafim Effluent MeterNSF Standard 46 Approved Chlorinator from LBC Manufacturing, Model LBC500Drip Irrigation Disposal with Netafim Bioline 0.6gph tubing 1800 sq.ft

April 5, 2017

Daniel Balboa, R. S.P.O. Box 574

Buda, Texas 78610(512) 899-2757

Page 3 of 18

Calculations:

Maximum Hydraulic Load:OSSF sized to accommodate:six office/warehouses with three employees at 10 Gallons Per Day per employee6 x 3 x 10 =180 Gallons per day

Maximum Organic Load:Expected Organic Load Per Person Per Day 0.175 lbs Per 24 HoursContribution While at this facility 0.175 lbs x 8 hours ÷ 16 waking hours = 0.088 lbs Per Day18 Persons x 0.088 lbs =1.58 lbs Per Day

Proposed Aqua Klear Treatment Tank Maximum Organic Load: 1.58 Pounds Per Day

Trash Tank Proposed: 500 GallonsEqualization Tank Proposed: 425 GallonsAerobic Tank Required per 285.91(2): 600 GPDAerobic Tank Proposed: 600 GPDPump Tank Proposed: 751 Gallons

Hydraulic Flow Equalization Tank Calculations:425 Gallon Tank with 8.25 gallons per inch

Volume Required above alarm: =180 GallonsProposed Reserve Volume Above Alarm On: 22" x 8.25 gallons per inch =181.5 Gallons

Volume Proposed Between Pump On and Alarm On: 75% x 180 GPD =135 GallonsProposed Volume: 17" x 8.25 gallons per inch =140.25 Gallons

Dosing Calculations:A combination of open Tees, semi-open Tees with ball valves, and small diameter pipes are to beinstalled to reduce the flow going to the aerobic tank down to approximately 5.00 gpm.Pump will be 5ft below ground 5.00ftGrade difference from tank to aerobic tank 0.00ftFriction head 20ft of 1" PVC 20ft x 1.92ft/100ft 0.38ftPressure head 2.00ftTotal head on pump 7.38ft

A Myers ME4, 0.4 hp, 115 volt submersible pumps are specified.Equivalent pump may be used with designer and inspector approval.From the performance curve chart, this pump will flow at least 58GPM at 8ft of head.

Dosing Volume:Program timer with an “on” time of 1.5 minutes / “off” time of 88.5 minutes1.5 minutes x 5.00 gallons per minute------------------------------- =7.50 Gallons/Dose

Page 4 of 18

\Calculations (continued):

Proposed Doses per day: 180gpd/7.50 gallons per dose----------- 24 doses per day

A RJR Controls control panel is to be used, Model ALT-DT with a Omron brand cycle timer.The timer is to be programmed to operate the pump for 1.5 minutes “on” twenty four times a day with aresting phase of 88.5 minutes between operations.

Drainfield Required:180gpd ÷ 0.1 gpd/ft

2=1800ft2

Length of Tubing Required:1800ft

2÷ 2ft spacing between tubing lines =900ft of Tubing

Brand of tubing required: Netafim's Bioline 0.6 gallons per hour

Length of Tubing Proposed:Zone A: 900 linear feet, Three sections of tubing at 300ft =900ft Tubing

Final Pump Tank Calculations:751 Gallon Tank (See Pump Chamber Increment chart on following page)

Volume Required above alarm: =180 Gallons

Alarm float will need to activate the alarm at 11" below the pump tank inlet.Alarm on at 39” and Pump Chamber Inlet at 50”751 Gallons – 568.1 Gallons -------------------------=182.9 Gallons

Volume Proposed Between Pump On and Alarm On: =180 GallonsPump On at 27” and Alarm On at 39”568.1 Gallons – 375 Gallons -------------------------=193.1 Gallons

Flow Calculations: Dosing FlushingPump intake will be 5ft below ground 5.00ft 5.00ftElevation Head Tank to Drainfield 0.00ft 0.00ftFriction head 60ft of 1" Supply Line at 4.50gpm 60ft x 1.80ft/100ft 1.08ft 0.00ftFriction head 60ft of 1" Supply Line at 12.50gpm 60ft x 11.00ft/100ft 0.00ft 6.60ftFriction head 65ft of 1" Flush Line at 8.0 gpm 65ft x 4.60ft/100ft 0.00ft 2.99ftFriction head through fittings and valves 1.00ft 3.00ftFriction head through tubing during field flush 0.00ft 6.00ftPressure head 40 psi x 2.31 ft per psi 92.40ft 0.00ftPressure head 25 psi x 2.31 ft per psi 0.00ft 57.75ftTotal head on pump 99.48ft 81.34ft

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Calculations (continued):

A Pentair STEP20, 0.5 hp, 115 volt submersible pumps are specified.Equivalent pump may be used with designer and inspector approval.From the performance curve chart, this pump will flow at least 21GPM at 99.48ft of head.From the performance curve chart, this pump will flow at least 23GPM at 81.34ft of head.

900ft of drip tubing with emitters spaced every 2ft = 450 emitters.Netafim's Bioline drip tubing will flow approximately 0.62 gallons per hour (0.01 gpm) at 10-40 psi.450 emitters x 0.01 gpm per emitter = 4.50 gpm180 gallons per day = 40 minutes per day (total run time)

4.50 gpm

A Aqua Klear control panel is to be used with a Omron brand cycle timer.The timer is to be programmed to operate the pump for 6.67 minutes “on” 6 times a day with aresting phase of 233.33 minutes between operations.

Dosing Volume 6.67 Minutes x 4.50 Gallons per Minute--- 30.00 gallons per doseMaximum doses per day 180 gpd ÷ 30.00 gallons per dose --------6 doses per day

Flushing Requirements:Netafim recommends at least 1.6 gpm velocity through each distal end of each section of tubingto provide adequate flushing. This system has five sections of tubing with a minimum flow rate of8.00 gpm. In addition to this flow the emitters are flowing 4.50 gpm during the flushing event.This is a total of 12.50 gpm. The friction lost through the supply and return lines during flushinghas been accounted for in calculating the total head on the pump (above).

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Tank Instructions:Berm, swale, and gutter to divert stormwater away from the tanks.All tanks are to be located in an area where they will be protected from automobiles, heavy equipment, and drainage or pondingthat could cause water infiltration into the tanks.All tanks shall be set level on a pad of sand, pea gravel, or sandy loam with a minimum depth of 4” (washed sand preferred).The tanks are to be installed with their lids no deeper than 18” beneath the finish grade or no deeper than the manufacturer’sspecifications. Backfill the excavation with clean, imported, sandy loam (class III soil) with gravel no larger than 1/2".The inlets, outlets, seams between the lids and walls of the tanks, the manhole openings and risers are to be sealed watertight.Pipes on inlet side of septic tank shall have a minimum fall of 1/8” per foot.All connecting pipes for the tanks are to be Schedule 40 PVC and chemically welded in place. These pipes are to be mortaredor epoxied (swimming pool epoxy preferred) where they enter or leave the tank, and these junctions are to be water tested.All tanks shall be filled with water high enough to cover the connecting pipes twenty-four hours prior to inspection.All turns in the sewer line prior to trash tank shall be made with sanitary fittings and a maximum of 45 degree bends.Risers shall be installed on all manhole openings.Risers must be airtight and watertight. There should be no way for water to enter the tank except through the sewer pipe.The pump is to be wired on a separate breaker than the alarm.All electrical components should be installed high enough to prevent flooding from storm runoff water.All wiring exterior to the tank shall be in conduit. The conduit entering the manhole riser should be sealed on the end to preventgasses and water from entering the conduit.All wiring for the pump and alarm must be made in accordance with the National Electric Code.The electrical connections for the leads to the pump and float switches with the wires from the building are to be made in anunderground junction box located near the manhole riser for the pump tank or they are to be made inside the manhole riser in ajunction box with fittings approved for exposure to caustic and explosive gases.Water softeners and garbage disposals should not be installed nor used in a building connected to this wastewater system.

Drainfield Instructions:Berm, swale, and gutter to divert stormwater away from the drainfield.The area of the drainfield is to be protected prior to construction from heavy traffic that could compact the soil.No construction on the drainfield is to be performed during or after a rain. The soil must be dry enough that no noticeablecompaction of the soil occurs during construction.If imported soil is to be added, the grass in the area of the drainfield is to be removed raising the grade. Failure to remove thismaterial can create a conduit for effluent to blow-out. No trees are to be removed without the owner’s approval.No grade cuts are to be made in the area of the drainfield.If the drainfield is specified to be constructed above the native material, all large loose rock is to be removed prior toconstruction, and the native surface is to be tilled or scarified.The imported fill material to be used during construction is to be approved by the health authority as well as Daniel Balboa, R.S.prior to construction.The drip tubing is to be installed by cutting trenches, plowing, or laying the tubing on scarified ground. The tubing is to beinstalled parallel to the contours with 2ft spacing between the lines of tubing.Netafim Bioline drip tubing (0.6 gph) only is to be used for the drip tubing.All pipe and tubing is to be buried with at least 6” of soil cover.If help is needed in layout of the fields or tanks call Daniel Balboa, R.S. at 512-899-2757.Should seepage or other underground water be found during excavation of the distribution trenches, stop all construction andnotify Daniel Balboa, R.S. immediately.The finished grade of the backfill in the drainfield area must be graded so that no water can pond over the drainfield or uphill ofthe drainfield.Never allow the pump to pressurize the tubing in the drainfield for more than 15 minutes at a time, and always allow the field torest for at least a few hours prior to pressurizing it up again. Failure to follow this instruction is likely to result in preferentialflow paths to be created in the soil that run from the tubing straight to the surface. Once these paths are created, it takes months,if ever, for them to heal.Once the system is in use the drainfield must be maintained at all times (mowed).

Inspection Schedule:This inspection schedule must be adhered to in order to demonstrate compliance.This schedule is independent of the authorized agent’s (health department’s) schedule.

Arrange to meet a representative from Daniel Balboa, R.S. prior to construction.A sample of the backfill material to be used is to be available for inspection at this meeting.

1st Inspection: When tanks and connecting pipes have been installed and filled for twenty-four hours.When the drip tubing and manifold pipes are installed.When pump and alarm are installed and operational.

Final Inspection: When system is complete and landscaping finished.

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NOTICE TO THE OWNER

1. Design Parameters: This wastewater system has been designed or will be designed on information provided by the client, and based on siteconditions at the time of design. Daniel Balboa accepts no responsibility for incorrect information or changes in site conditions.

2. Usage Limitation: The maximum peak usage limitation is gallons per day. Daniel Balboa highly recommends that the maximummonthly usage should be no more than gallons ( gallons per day average).Average Daily Usage is recommended to be no more than 65% of the maximum usage. The Owner shall inform the property’s occupants ofthe gallon per day Usage Limitation and, upon sale or transfer of the property, the Owner shall inform the property’s buyers of the UsageLimitation.

3. License: The Owner shall acquire a license to operate this wastewater system from the appropriate local governing agency. A license is notautomatically issued when inspections are complete.

4. Grade Cuts: Any grade cuts made within twenty-five (25) feet downhill or to the side of the drainfield will likely void the license and maycause failure of the system. It is very common for such grade cuts to be considered for construction of foundations, driveways, sidewalks, pools,retaining walls and the like. The Owner is responsible for seeing that these cuts are not made.

5. Setbacks: The Owner shall adhere to the drainfield minimum setbacks and assure that all improvements made on the property are not over thesystem and are outside of the setbacks. It is the Owner's responsibility to assure that buildings, houses, irrigation systems, patios, ponds, storageunits, water lines, water wells, or other structures or improvements are not constructed above the system or inside the setbacks. The Owner shallrefer to these plans, homeowner’s association rules, the local regulations, and TCEQ’s on-site wastewater rules regarding the exact setbacks.

6. Trees: The Owner understands that damage to trees may result from installation and/or operation of the system and hereby relieves DanielBalboa of any and all claims for damage to trees.

7. Vehicles: It is the Owner’s responsibility to assure that automobiles, campers, motor homes, trailers, or other vehicles are not parked or drivenabove the system or inside the setbacks.

8. Water Softening and Reverse-Osmosis: The backwash from water softening and reverse osmosis units must not be plumbed into any part ofthe system. Water softening units harm the system by injecting high salt concentration solutions into it and reverse osmosis units harm the systemby hydraulically overloading it.

9. Sprinkler Systems & Drainage Systems: No sprinkler system should be installed on or near the drainfield. Rainwater drainage should not bedirected toward the drainfield. Excessive water falling on or uphill of the drainfield can cause the drainfield to fail.

10. Repairs: The Owner shall repair this wastewater system as needed. Typical repairs include, but are not limited to: replacing soil and grassover the system’s drainfield; replacing the pump and other components which become damaged, worn or ruined; and replacing crushed, collapsed,or cracked system components.

11. Large Surges Of Wastewater: Large bathtubs should not be drained all at once, nor should several loads of laundry be washed all at once.Large volumes of water (20 gallons or more) entering the wastewater system rapidly will cause turbulence in the treatment tank. This turbulencecauses solids in the tank to be transferred out of the tank. This solids transfer will cause some part of the system to become plugged.

12. High Strength Waste: No commercial food preparation or other processes that might create high strength wastewater are allowed.

13. Hazardous Materials: Chemicals that might kill off the organisms in the tanks and drainfield that are responsible for treating the wastewatershould not be allowed to enter the wastewater system. Some examples are: gasoline, paint thinner, paint, antibiotics, and film developmentchemicals.

14. Maintenance: The Owner shall maintain this system as needed. Typical maintenance includes, but is not limited to:a) maintaining grass above the system’s drainfield and other areas of disturbed soilb) replacing chlorine, if requiredc) regularly inspecting the system to ensure that effluent is not surfacingd) regularly inspecting and repairing the plumbing fixtures, especially toilets, to make sure that leaking fixtures even unapparent leaks are

not overloading the systeme) conserve water by: using 2 ½gpm shower heads, 1.6gpm toilets and 2.2gpm faucet aerators, not running water continuously during hand

washing, teeth brushing, rinsing dishes, cleaning vegetables, etc.f) limiting the use of garbage grinders (it is preferred that no garbage grinder be used)g) not disposing of cigarette butts, trash, coffee grounds, tampons or napkins down the drainh) not adding septic tank additivesi) limiting the quantity of soaps, detergents, bleach, and drain cleaners that enter the systemj) legally removing sludge, scum, and trash from the tanks, as needed (at least every 3 years)

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Aerator

3/4" Schedule 40 PVC notmore than 100 LFfrom Plant

Alarm On

Timer On

Pump Off

Invert ofpumpchamberinlet

20"

7"

11"

12"

Install tank on a compacted pad of sand, pea gravel, or sandy loam (minimum depth of pad is 4 inches).Tank excavation is to be backfilled with sand, pea gravel, or sandy loam.

No gravel or rock larger than 1/2 inch is allowed in the 4 inch pad or in the backfill material.

Use an Aqua KlearControl Panel

In Final Pump ChamberCycle Timer Settings:

6.67 Minutes On/ 233.33 Minutes Off6 Doses Per Day

Check ValveSwing-Type

Sch 80 PVCUnion

Sample Port(unthreaded)

1/8 Inch Anti-Siphon Hole

Secondary PanRequired

20 Inch Tuf-Tite Risers and LidsInstalled Watertight and Secured with

Stainless Screws (8)

Cross Section Detail of Tanks

Aqua Klear AK6BES3

500 Gallon Trash Tank

Use a RJRControl Panel, Model LPD-DT

In Equalization ChamberCycle Timer Settings:

1.50 Minutes On/ 88.5 Minutes Off24 Doses Per Day

Alarm On

Timer On

Pump Off

Inlet

6"

5"

22"

17"

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RJR Controls LLCP.O. Box 51Spicewood, TX 78669(830) 693-1499rjrcontrols.com

LPD-DT CONTROL PANELSCustom PanelsLift Station Panels • SLS Panels • LPD-B Panels • LPD-B2 Panels • LPD-DT PanelsAlternating PanelsReplacement Aerobic PanelsStand Alone AutoDialersMonitoring ServicesContact Us

The LPD-DT Control Panel is designed to monitorpump tank levels and operate up to a 1/2 HP 120VAC pump on a dosing timer. The Alarm can beused as a High Level or Low Level Alarmdepending on the type of float used. This controlpanel has one incoming 120 VAC circuit. There are2 circuit breakers in this control panel, 1 for thealarm and 1 for the pump. Features

4X Enclosure with hinge door and locking latch.Test and Silence Switch.Two Circuit Breakers.360 degree red light.Dosing Timer and Pump Control Relay.120 VAC Pizo electric buzzer.Captive terminal strip for field wiring.Two year limited warranty.

RJR Controls Monitoring Service http://www.rjrcontrols.com/lpd-dt.htm

1 of 1 11/12/2015 4:22 PMPage 16 of 18

Water Line Crossing Detail

20ft22ft

6 Inch Minimum4 Inch Minimum

Finish Grade

Sch 40 PVC Sleeve20ft Pipe SegmentCentered on Crossing

Water LineWastewater Line

20ft Sch 40 PVC Pipe or SleeveCentered on Crossing

Cement Stabilized Sandwith a minimum of 10% cementbased on loose dry weight volume

If the wastewater line is sleeved ,seal endsof sleeve with silicon caulk.

Cement stabilized sand is requiredto extend 4 inches below and 6 inchesabove the wastewater line.

The use of brown coloring in the cementstabilized sand is recommended foridentification during future work.

Not to Scale

Potable and Non-potable water line crossings with sewer and effluent lines must be treatedlike public water lines and comply with the Water Hygiene Code (Title 30 TAC, Chapter 290).

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Scale 1" = 30ft

Notes to Installer:All Parts of the OSSF are to be at least10ft setback from any water line.

All Parts of the OSSF except dripirrigation drainfield are to be at least 5ftsetback from the house and any surfaceimprovement.

All Parts of the OSSF are to be at least5ft setback from the property line and atleast 1ft setback from any easement.

The drip irrigation drainfield is to be atleast 25ft setback from any sharp break.

Ball Valve For Periodic FlushingOf Tubing - Normally ClosedCover With Valve Box

Two-Way Cleanout

Two-Way Cleanout

Two-Way Cleanout

5ft Setback from Building

500 Gallon Trash Tank3" Sch 40 PVCwith 1/8" fall per foot

3" Sch 40 PVCwith 1/8" fall per foot

Existing Septic TankTo be properlyabandoned

Aerobic TankAquaKlear AK6BES3

100 Micron Filter1" Arkal Super

1" Sch 40 PVC Flush Line1" Sch 40 PVC Supply Line

3" Sch 40 PVC

Netafim Bioline 0.6GPH Drip Tubing900 Linear Feet RequiredFive Sections Maximum180 Ft Maximum Length Per Section

VacuumBreakers

Proposed Water Lines

Water Well

Water Meter

100f

t

3" Sch 40 PVCwith 1/8" fall per foot

5ft Setback from Property Line

1ft Setback from Easement

Profile Hole No. 2

100

101

102

Water Line CrossingSee Detail

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Scale 1" = 30ft

Notes to Installer:All Parts of the OSSF are to be at least10ft setback from any water line.

All Parts of the OSSF except dripirrigation drainfield are to be at least 5ftsetback from the house and any surfaceimprovement.

All Parts of the OSSF are to be at least5ft setback from the property line and atleast 1ft setback from any easement.

The drip irrigation drainfield is to be atleast 25ft setback from any sharp break.

Ball Valve For Periodic FlushingOf Tubing - Normally ClosedCover With Valve Box

5ft Setback from Building

500 Gallon Trash Tank3" Sch 40 PVCwith 1/8" fall per foot

3" Sch 40 PVCwith 1/8" fall per foot

Aerobic TankNuWater B-800

100 Micron Filter1" Arkal Super

1" Sch 40 PVC Flush Line

1" Sch 40 PVC Supply Line

3" Sch 40 PVC

Netafim Bioline 0.6GPH Drip Tubing900 Linear Feet RequiredEight Sections Maximum180 Ft Maximum Length Per Section

VacuumBreakers

Proposed Water Lines

Water WellTo Be Plugged

Water Meter

100f

t

3" Sch 40 PVCwith 1/8" fall per foot

5ft Setback from Property Line

1ft Setback from Easement

100

101

102

Water Line CrossingSee Detail