HomeMy WebLinkAboutOP-3-10-5719.TIF
vy$ CATAWBA COUNTY Case # OP-3-10-5719
Public Health Department Subdivision
d ~4 Environmental Health Division
s PO Box 389, 100-A Southwest Blvd, Newton, NC 28658 Lot #
~g w PIN# 371212769834
Applicant/Owner LITTLE FOLKS SCHOOL OF NC INC
Site Address: 410 21ST ST SE, HICKORY, NC
Property Size: SF ACRES
Directions:
Catawba County Health Department Operation Permit
System Type: VA - SAND FILTER PRETREATMENT
(In accordance with Table Va)
Description: OTHER
Types V and VI systems expire in 5 years. o
Owner must contact health department 6 months prior to exiration for permit renewal.
System Installation Comments:
See As Built Site Plan from Books Engineering
PERMIT CONDITIONS:
1. All maintenance, monitoring, and performance requirements shall be in accordance with
15A NCAC 18.1900, Rule .1961
2. Operation & Maintenance Specifics: TYPE 5 OPERATOR REQUIRED
Subsurface system operator required? Yes-X- No
If yes, see attached sheet for additional operation conditions, maintenance and reporting.
This system has been installed in compliance with applicable North Carolina General Statutes, Rules for Sewage
Treatment and Disposal, and All conditions of the Improvement Permit and Construction Authorization.
Bryan Miller #1127 07/23/2009
SYSTEM INSTALLER INSTALLATION DATE
Jason Boyd - 41810 01/15/2010
AUTHORIZED STATE AGENT DATE OF OPERATION PERMIT ISSUANCE Form F
03/24/10 10:48
f~ Brooks Engineering Associates
Land Planning Civil Engineering Surveying Environmental Services Soil Science Services
Letter of Transmittal
To: From: Date:
Michael E. Cash Matthew Rice 7-23-09
Environmental Health Supervisor
Government Center cc: (need telephone no. if Fedex, no P.O. Box)
100-A Southwest Blvd
Newton, NC 28658 Lee Combs
(828 )465 - 8268 410 21" Street
Hickory, NC 28602
(need telephone no. i Fedex, no P. 0. Box) Ph- 866-256-4545
Project Name:
Little Folks School
Project No:
328909
❑ flail ® Deliver ❑ Overnight* ❑ Other
*must use street address & include phone number
Document Description: Date: Use:
Co of As-Built Schematic Review
Certification Letter Review
s
Comments:
Call with any questions.
EEC E 0
GAIAVVDA OUM
ENVIRORIVARTAt WIN'
17 Arlington Street, Asheville, NC 28801 9 Phone (828) 232-4700 • Fax (828) 232-1331
Brooks Engineering Associates
Land Planning Civil Engineering Surveying Environmental Services Soil Science Services
July 23, 2009
Catawba County Health Department
3070 11 th Avenue Drive SE
Hickory, NC 28602
Attention: Mike Cash, Environmental Health Supervisor
Regarding: Engineer's Certification
Little Folks School
Repair OSWW System
BEA Project No. 328909
Dear Mr. Cash:
Brooks Engineering Associates, P.A. is pleased to convey our Engineer's Certification of the
repair on-site wastewater system for the Little Folks School. Based upon the final start-up
inspection conducted on July 22nd 2009, the system appears to be constructed and operating in
general conformance with the plans and specifications submitted by BEA dated 5/08/2009.
Minor field adjustments were made for some tank locations. These changes are reflected on an
"as-built" schematic/ sketch. The approximate installed tank locations were estimated by the
engineer and are enclosed with the submittal. No As-Built survey was conducted.
The float switches appeared to be set at the levels specified in the plans. The dosing system was
delivering effluent to Manifolds #1, #2, #3, and #4 with at least 2.0 feet of residual head which is
more than the minimum required. All of the manifolds were throttled back to 2.0 feet of residual
head during start up. Manifold #4 was throttled back even further to achieve the desired flow
rate of approximately 17 gpm. It is desirable for this zone to have a lower flow rate than the
other zones because it is much smaller.
After reviewing the data collected during start up and the "Manifold Orfice Calculations"
included in the original submittal, the engineer does make the following recommendations for
operation of the system:
■ Manifold #4 should remain adjusted to have 1 foot of residual head. This provides an
approximate flow rate of 17 gpm to the smallest zone.
■ Manifolds #3 and 92 should be adjusted to have 4.5 feet of residual head. This should
provide a flow rate of approximately 30 gpm to the medium sized zones.
■ Manifold #1 should be adjusted to have 6.3 feet of residual head (possibly full throttle).
This should provide a flow rate of approximately 36 gpm to the largest zone.
17 Arlington St. Asheville, NC 28801 www.brooksea.com ph. 828.232.4700 (x.828.232.1331
The above residual heads and flow rates are desirable to provide the correct proportions of flow
to the zones based on the proportion of drainfield lateral that is in that zone. Once the above
adjustments are made, the run and rest times set during start up (9 minutes on, and 5 hours off)
will be the correct settings to ensure proper operation of the system. The cut-sheets for the tanks
that were substituted during installation are provided as Attachment A of this letter.
It is our understanding that the system will be issued a Permit to Operate upon contracting with a
certified operator.
We appreciate your cooperation with this project.
Sincerely,
Brooks Engin ering Associates, P.A.
Mark C. Brooks. P.E.
Cc: Lee Combs, Owner
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