HomeMy WebLinkAbout01590 •
GARFIELD COUNTY BUILDING AND SANITATION DEPARTMENT
ErnmERED SY' — T ONLY 109 8th Street Suite 303
Glenwood Springs, Colorado 81601 „ �
Phone (903) 945 -8212 ,�2 - ,rteai* n
This does not constitute
INDIVIDUAL SEWAGE DISPOSAL PERMIT N 1590 a building or use permit.
Owner Bonneville Pacific ODrp. (inland Mariculture) _
System Location Amerioan Atlas #1 Owen Power P1,At1t - _M. 352• Rifle ,
Licensed Installer Sohnueser 4 Associates, Inc.
* Conditional Construction approval is hereby granted for a gallon
. Septic Tank or _ Aerated treat -nt unit.
Absorption area (or dispersal area) computed as f. lows:
Perc rate of one inch in minutes req Tres a minimum of sq. ft. of absorption area per bedroom.
Therefore the no. of bedrooms x sq. ft, minimum requirement = a total of sq. ft. of absorption area.
May we suggest: C/1 y/ ^. e e' f C c 5 r S 7 / f s'sS r ct h ct 7” 1 A 4 e of j '' �/.4 vl ( / t
/
Date . Inspector 1 i 7.fi /,' ,
FINAL APPROVAL OF$YSTEM: / j
No system shall be deemed to be in c.mpliance with the Sewage Disposal Laws until the assembled s tem is approved prior to cover•
ing any part.
Septic Tank access or inspection and cleaning within 12" of ground surfa or aerated access ports above ground
surface.
Proper ma vials and .ssembly. -
Trade name .. septic to or aerated treatment it.
Adequate abso ption (or dispersal) area.
Adequate comp iance with perm req ' el ents.
III Adequate cornpl ante with County , plttate r r atio s /requirements.
Other
Date _ _ ' I pector
RETAIN WI' H RECEIP R !Cf. RDS AT CONSTRUCTION SITE
`CONDITIONS:
1. All installation must comply with all require ents oft a Colorado State Board of Health Individual Sewage Disposal Systems
Chapter 25, Article 10 C.R.S. 1973, Revised 1984.
2. This permit is valid only for connection to structures which have fully complied with County zoning and building
requirements. Connection to or use with any dwelling or structures not approved by the Building and Zoning office shall
automatically be a violation of a requirement of the permit and cause for both legal action and revocation of the permit.
3. Any person who constructs, alters, or installs an individual sewage disposal system in a manner which Involves a knowing
and material variation from the terms or specifications contained in the application of permit commits a Class I, Petty Offense
($500.00 tine — 6 months in jail or both.).
Applicant: Green Copy Department: Pink Copy
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• GARFIELD COUNTY
DEPARTMENT OF BUILDING AND SANITATION
November 3, 1987
Schmueser & Associates, Inc.
201 Centennial St., Suite 306
P.O. Box 113
Glenwood Springs, CO 81602
ATPN: John Strickland
RE: Inland Mariculture I.S.D.S. Permit 11590
Dear John:
As discussed with you by telephone on 11/02/87, the review of the septic
disposal permit by John Blair of the Colorado Dept. of Health, Water
Control Division, turned up a discrepancy in the quantity used in flow
determinations for the Inland Mariculture facility.
The corrected flow quantity results in a design quantity of over 2,000
gallons per day, and thus requires that Garfield County refer this
disposal application to the State of Colorado, as the State has
jurisdiction over flow quantities in excess of 2,000 gpd.
Garfield County must rescind the granted Permit 11590 and refer all
further action for review and approval of the application to the Colorado
Dept. of Health.
If I can assist in any way, please let me know.
Sincerely,
Jim McMurrey
Inspector
JMcM/1jb
xc John Blair
109 8TH STREET, SUITE 303 945- 8212/625 -5571 GLENWOOD SPRINGS, COLORADO 81601
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6
JOHN C. WARD, Ph.D., PE. 29474 Roan Drive
Consulting Environmental Engineer Evergreen Colorado 80439
(303) 670 -3180
October 27, 1987
Mr. John E. Strickland
Schmueser & Associates, Inc.
1512 Grand Ave., Suite 210
Glenwood Springs, CO 81601
Dear John:
Following are my calculations for the design of the sewage disposal
system for the Inland Mariculture Live Seafood Facility.
1. There will be a total of 13 employees, 6 day workers at offices at
15 gallons /(person) (day) and 7 factory workers at 35 gallons/
(person) (day) = 335 gallons per day (fresh water).
2. Sludge from oyster tanks: - 69 gallons per day (salt dater).
3. The three tanks of the oyster washer will be dumped once per day:
63 gallons per .day (fresh water).
4. One -half of the total algae flume volume will be dumped every 3
months: 28 gallons /day (salt water).
5. Pressure sand filter backwash water. Backwash time is about 2
minutes per foot of filter depth which is 1.13 feet for a total of
2.26 minutes. The backwash rate will be a maximum of 159 gallons
per minute, so the total used per backwash is 359 gallons. The
length of run between backwashes is expected to be 3 days, so the
amount of backwash water used per filter is 120 gallons per day.
For 11 pressure sand filters this comes to 1,320 gallons per day
(fresh water).
Adding up the above gives a design quantity of 335 +69 +63 +28 +1,320 =
1,815 gallons per day. Of this amount, 97 gallons per day is salt
water and 1,718 gallons per day is fresh water. The average sal-
inity of water from the City of Rifle is 764 mg /1 and the maximum
salinity is 1,501 mg /1. The average salinity of the salt water
above is 22,886 mg /1. Therefore the salinity of the combined
wastewater from this facility will be around 1,946 mg /1.
•
Mr. John E. Strickland
Schmueser & Associates, Inc.
October 27, 1987
Page T o
Percolation tests were performed by Schmueser & Associates, Inc.
Test hole 1 was located between the Inland Mariculture Building and
the east property line. Test holes 2 and 3 were just east of the
east property line.
The required volume of the septic tanks is 2,500 gallons. The
Schmueser & Associates, Inc. percolation tests are summarized
below.
Water Percolation Calculated Absorption
Test Hole Rate, t, Minutes Rate, Q, gallons
Number per Inch (after (ft
4 hours)
1 27.9 0.95
2 12.9 1.39
3 16.5 1.23
Average 1.19
Q was calculated using the equation Q a 5/
In addition eight previous percolation tests performed by ATEC on the
south side of the property gave an average calculated absorption rate
of 1.67 gallons /(ft)(day). Nevertheless, the average figure deter-
mined by the Schmueser & Associates, Inc. percolation tests will be
used.
Also enclosed with this letter is drawing No. PR1 entitled "Sewage
Disposal System ".
Mr. John E. Strickland
Schmueser & Associates, Inc.
October 27, 1987
Page Three
For a trench 5 feet wide, the required trench length would be about
305 feet. However, by increasing the depth of gravel below the
perforated pipe from six inches (6 ") to three feet, six inches
(3'-6"), the trench length can be reduced to 54% of what would be
required otherwise, or to 165 feet. The actual length of trench
that will be used is 192 feet.
• Sincerely, \ aa "�p E$ �.
? x ° 3 1
•
John C. Ward • 6640
�. .
-449 0 Curate