HomeMy WebLinkAboutSWG Letters / Memos - 11/17/1977 IILC Li4L IU
t40V 171977
TNUNSTON MASON
Sated
%�ashington
November 14, 1977 Denamiient
Wesley Johnson otFm®
Alderbrook Inn
Union, WA 98592
SUBJECT: Sewage Collection, Treatment and
Disposal for Alderbrook Inn
Dear Mr. Johnson:
In accordance with RCW 90.48.110 and WAC 372-20-010 through WAC 372-
20-110 of the Department of Ecology, the plans and specifications for
the subject project have been reviewed and are hereby approved with
the following provisions:
1 . Plans for the package sewage treatment plant must be reviewed and
approved by DOE prior to construction.
2. Provisions must be made for doing the required laboratory testing.
3. Since this is a discharge to shellfish waters, the effluent limit
for total coliforms is 70 (MPN) and for fecal coliform is 14 (MPN).
4. The primary method of disinfection must use a chlorine gas system.
A back-up system is required. The existing hypochlorite system is
an acceptable back-up system provided it is in good working condition.
5. Water must be supplied to the treatment plant site for purposes of
washdown.
6. A flash mixer must be provided- ahead of the chlorine contact basin.
The attached material describes what is an acceptable flash mixer.
If hydraulic mixing is applied, a Froude number of 4.5 must be achieved.
7. DSHS requires that the dock area be posted to inform users of that
facility that treated sewage effluent is being discharged in that area.
8. We recommend that you run collection line "A" straight into the manhole
without any deflection.
9. Construction of the sewage treatment plant must be complete prior
to May 31, 1978. The time of completion of construction sho ill be _
specified in the specifications. KK (, E IV E D
11 OV 171977
TNuaSTON MASON
Southwest Washington Regional Headquarters Olympia. Washington 98504 Telephone (206) 753-23J7'-" n"T"'OT
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Letter to Wesley Johnson
Page 2
November 14, 1977
If you have any questions about this approval , please contact. Vern Meinz
at 753-0142.
Sincerely,
E. W. Asselstine
Regional Manager
Southwest Regional Office
EWA:,jr
cc: Valentine, Fisher & Tomlinson'
Mason County Health Department✓
John Kirner, DSHS
Jim Krull, DOE