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Home My WebLink About047-160-077 EHS25-0071 25-003 Nord Country Septic Repair Application Package Transmittal Date: 03/11/2025 To: Paul Thao From: Noah Williams Company: Butte County Environmental Health Division NS#: 25-003 Address: 202 Mira Loma Drive Oroville, CA 95965 APN: 047-160-077 RE: Nord Country School Septic Repair Construction Permit Application Enclosures: Onsite Wastewater Construction Permit Application (1 Sheet) Pressure Distribution and Supplemental Treatment Design Form (2 Sheets) Onsite Design Calcs (6 Sheets) (2 Copies) Onsite Design Construction Plans (4 Sheets) Paul, Here is the application package for the Nord Country Septic Repair. Let me or Mark know if you have any questions. Respectfully, Noah Williams NorthStar Engineering nwilliams@northstarae.com (530)-828-3397 This section completed by applicant APPLICATION Form CP APN #: TrakIt #: Applicant Name (Please print) Property Owner Name Applicant Mailing Address Construction Site Address City State Zip City State Zip Applicant Telephone Number Certified Designer (if applicable) ☐New Construction ☐Repair ☐Expansion ☐Tank Destruction Certified Installer (if applicable) ☐Tank Replacement Only ☐Residential: Number of bedrooms: ☐Non-Residential (specify): Applicant Signature Date DESIGN AND CONSTRUCTION APPROVAL This permit is issued based on review of the attached design and has determined that it meets the re- quirements of Butte County Code Chapter 19 On-Site Wastewater Systems. _ _ Environmental Health Specialist Date of Issuance Comments/Conditions: � This permit valid only for installation of attached design, stamped “Approved.” Variation from the ap- proved design must have prior approval by Environmental Health. � This permit valid only if system is installed by the homeowner or by a contractor with valid Installer Certification issued by Environmental Health. � This permit will expire 2 years from the date of Design and Construction approval. This secti FINAL APPROVAL AND CERTIFICATE OF Installation by: ☐ Homeowner ☐ Certified Installer ☐ As-Built Attached ☐ Designer Sign-off Inspected by: Comments: _ Environmental Health Specialist Date White – Environmental Health copy Yellow – Customer copy: Final approval Pink – Customer copy: Permit Update: December 14, 2020 on completed by Environmental HealthON-SITE CONSTRUCTION P Date: _ Amount: Receipt No. This application will be accepted with payment of permit fee and the permit will be issued when system design is submitted by a Certified Designer (or Certified Installer for Standard Gravity System) and approved by Environmental Health. March 10, 2025 School, 110 persons 047-160-077 Chico Unified School District 1163 East Seventh Street Chico CA 95926 Chico Unified School District 5554 California St Chico CA 95926 PPRREESSSSUURREE DDIISSTTRRIIBBUUTTIIOONN AANNDD SSUUPPPPLLEEMMEENNTTAALL TTRREEAATTMMEENNTT DDEESSIIGGNN FFOORRMM Update: July 19, 2010 Staff Use Only Date Received: _________ Staff: _________________ A design will be reviewed when this form and design drawings are submitted with an On-Site Wastewater System Construction Permit application and fees are paid. Parcel Identification APN #: ______________________________ ______________________________________ Applicant Name ______________________________________ Parcel Address ______________________________________ City State Zip ______________________________________ Subdivision Name/Division/Block/Lot TrakIt #: ______________________________ ______________________________________ Designer Name ______________________________________ Designer Mailing Address ______________________________________ City State Zip ______________________________________ Designer Telephone Number Design Parameters Treatment Type Vertical Separation (inches) _______________ Closed Bottom Sandfilter Open Bottom Sandfilter Mound ATU _________________________ Make/Model Textile Filter _________________________ Make/Model Disinfect Unit_________________________ Make/Model Dispersal Type Gravity Pressure Trench Bed Drain Rock Gravelles Chamber Subsurface Drip Dispersal System Parameters Number of Bedrooms _______________ Daily Flow ____________gpd Septic Tank Capacity (gal) ____________gal. Receiving Soil Type (A-E) _______________ Receiving Soil Ap. Rt _________ gpd/ft2 Designed Vertical Separation _______________ Drainfield Square Footage _______________ Percent Reduction Taken _______________ Trench width _________inches Total lineal trench length _____________ft. Trench depth _________inches Depth of fill over drainfield _________inches Slope in drainfield area _____________% Pump Specifications Difference in Elevation Between Pump Shutoff and Uppermost Orifice: ________ ft Uppermost Orifice is: Higher Lower than Pump Shutoff Capacity @ Total Pressure Head: _______gpm Calculated Total Pressure Head: ft (Attach Pump Curve) Dosing and Pump Chamber Number of Doses/Day ___________ Dose Quantity _________gal Chamber Capacity _________gal Pump Controls: Timer (or) Elapse Time Meter (circle if required) If Timer: Pump On _______ Pump Off _______ Check the following components if they drain between doses: Laterals Manifold TransportThis section completed by Certified Designer 047-160-077 Chico Unified School District NorthStar 5554 California St 111 Mission Ranch Blvd., Suite 100 Chico CA 95973 Chico CA 95926 530-893-1600 >36" 4 4 36 +/- 4 624 18 12-48 <1 4 4 26.5 42.7 110 Persons 2,200 141605,500 Total 4,000C 0.9 36"6 min 98 min 2,444 sf bottom 25% Pump curve attached to calc packet. Pressure Distribution and Supplemental Treatment System Design TrakIt #: ___________________ Update: July 19, 2010 Pressure Distribution System Parameters Laterals Schedule/Class _______________ Length (feet) _______________ Diameter (inches) _______________ Number _______________ Separation (feet) _______________ Orifices Total Number of Orifices _______________ Diameter (inches) _______________ Spacing (inches) _______________ Manifold Schedule/Class _______________ Length (feet) _______________ Preferred Manifold Configuration Used? Yes No Transport Pipe Schedule/Class _______________ Length (feet) _______________ Diameter (inches) _______________ Designer Certification The undersigned has submitted this design based observed site conditions and has designed the system as shown on this design form and the drawings attached thereto. _________________________________________ Designer Date The undersigned has reviewed this design on behalf of Butte County Public Health Department and determined it to be in compliance with state and local on-site regulations and ordinances. _________________________________________ Environmental Health Specialist Date Caution: This design approval is only valid when all the following conditions are met: The design is stamped “Approved” by Butte County Public Health Department The Construction Permit has not expired. The system is installed by a Certified Installer or homeowner authorized by the Butte County Public Health Department Drainfield site conditions have not been altered to adversely affect conditions of design approval This section completed by Certified Designer This section completed by EH SCH 40 PVC 104 1.25 6 6 SCH 40 PVC 9 180 1/8" 42" SCH 40 PVC 220 (Farthest Zone) 1.25 03-11-2025 Nord Country School Septic Repair Chico Unified School District 5554 California Street Chico, CA 047-160-077 25-003 Prepared by or under the supervision of: Mark S. Adams, PE RCE 34257 Onsite Wastewater Treatment Design Calculations Client Name: Project Address: Project City, State: NorthStar Job #: Chico, Ca 95926 January 28, 2025 Project Name: APN: NorthStar 111 Mission Ranch Blvd. Ste 100 Prepared By: Job Number: 25-003 Gross Lot Area Parcel 1 - per Assessor's Plat 4.95 acres GROSS LOT AREA =4.95 acres Predicted Wastewater Flows Description Flow/Unit Number of Persons Person 20 gpd 110 2,200 gpd TOTAL WASTEWATER DESIGN FLOW =2,200 gpd Notes 1. Wastewater design flows from the Butte County On-Site Wastewater Manual-Part 3-System Requirements, Chapter 3, Design Flows Table. 5554 California Street Chico, CA Wastewater Loading Calculations Chico Unified School DistrictNord Country School Septic Repair 2 Job Number: 25-003 Design Flow 2,200 gpd 3 Foot Wide Trench - No Treatment - Pressure dispersal Application Rate1 0.90 gpd/sf Trench Width 36.0 in Trench Depth (Depth of Rock)18.0 in Effective Trench Area per Lineal Foot 3.00 sf/lf Square Feet of Trench Area Required 2,444 sf Lineal Feet of Original and Replacement Trench Required per Dispersal Area3 620 lf Notes 1. Application rate based on soil type from soil profile.2. Lineal footage of trench required for primarily treated effluent is based on the Bottom Area of trench. 3. Lineal footage of trench required for pressure dosed dispersal has 25% reduction applied. Dispersal Trench Calculations Chico Unified School District 5554 California Street Chico, CA New Absorption Field Capacity Nord Country School Septic Repair 3 Job Number: 25-003 Design Flow 2,200 gpd Unit Count Tank Size HRT Existing Grease Trap 1 500 Gal.0.23 Days Existing Septic Tank 1 1,000 Gal.0.45 Days Proposed Additional Septic Tank 1 4,000 Gal.1.82 Days Total HRT=2.50 Days Notes Recommended minimum HRT (Hydraulic Retention Time) is 2 days. Tank Sizing Chico Unified School District 5554 California Street Chico, CA Nord Country School Septic Repair 4 Job Number: 25-003 Design Flow 2,200 gpd Pump Model PF3005 Design Flow Rate 30 gpm Actual Pump Flow Rate 27 gpm Dose rate 27 gpm Percentage of the day pumps need to run 5.77 Pump "on" time 6.00 min hrs:min:sec 0:06:00 Dose volume 159.0 gal. Pump "off" time 98.07 min hrs:min:sec 1:38:04 Total Cycles per day 14 Total Dosed in 24 hrs 2,200 gal. Notes Dose Pump Cycle Times Nord Country School Septic Repair 5554 California Street Chico, CA Nord Country School Septic Repair 5 Job Number: 25-003