Rist Frost let.03.15.95 i y
RIST-FROST ASSOCIATES, P.C.
21 BAY STREET
PC. BOX 838
GLENS FALLS, NY f
12801-0838
FAX 518-793-4146
518-793-4141
March 15, 1995
RFA #89-5000.371 RC94
Mr. James Martin .
Town of Queensbury Office Building
531 Bay Road
Queensbury, NY 12804
Re: Area Variance No. 71-1994/Godnick
Dear Mr. Martin:
Rist-Frost has reviewed the revised Site Plans Proposed Variance drawing
received March 13, 1995, with the following engineering comments:
Adequate changes have been made addressing our earlier 01/10/95 concerns
regarding erosion and sediment control during construction. The
installation of the hay bales and filter fabric fence should follow the
details found in the NY Guidelines for Urban Erosion and Sediment Control
Manual , and remain in place until site is stabilized.
An oversized stormwater drywell is now shown and repositioned such that
the drive area and a significant portion of roof runoff will be directed
to it, an improvement from the initial size and location.
Regarding the sanitary sewage disposal system, it appears the applicant is
still investigating options. Discussions with the applicant's engineer
indicate that they are attempting to confirm exactly what is presently
installed, and if appropriate, continue with its use. If not, it appears
the applicant may try to fit a conventional system on the site. (A
conventional absorption system may be able to be installed, however, with
the drive and building layout as proposed, it may be difficult to meet all
required separation distances. The Town should review whatever system is
eventually proposed. ) If necessary, the applicant indicated they would
consider installing a new holding tank system.
Our check of the impermeable area indicates it just meets the 35% maximum
(65% permeable) which included the deck and 2' eaves.
Please call if you have any questions.
Very truly yours,
RIST-FROST ASSOCIATES, P.C.
04V p
William F. McNamara, P.E.
Project Engineer
WFM/lab
cc: Steve Jager (by fax 203-688-7497)
APPENDIX A aS3( OBI NAN `�
TABLE I - HOPIZONMAI. SEPARATION DISTANCES FROM WPMS%TPTF32 SOUR MS
TO STREAM
WELL OR I.AKF OR
WASTEWATER SUCTION WATER PROPM Y IAKE GFORGE
SOURCES LINE (a) COURSE (c) D ELLM LINF AND TRIES.
House Sewer 25' if cast 25' _ 10, 50'
(w.atcrtight iron pipe
join Ls) 50' otherwise
Septic 'Tank 50' 50' 10' 10' 50'
Effluent Line to
Distribution Box 50' 50' 10' 10, 50'
Distribution Box 100' 100, 20' 10' 100'
Absorption Field 1001 (b) 1001 (d) 20' 10, 100' (b) (d)
Seepage Pit 150'.(b) 1001 (d) 20' 10' 150' (b) (d)
(more in coarse gravel)
Dry well 50' 25' 20' 10' 50'
(Roof & Footing)
ill or Built-
100' 100' 20' 10' 200' (e)
= - p Syst(nt
hvapr)transpirati°n 100' 100' 20' 10' 200' (e)
Absorptiun System
Sanitary Privy Pit 100, 50' 2C' 10' 100'
Privy, Water- 50' 50' 20' 10' 100'
tight Vault
(a) water service and sewer lines my be in the same trench if cast iron sewer with
lead-caulked joints is laid at all points 18" below water service pipe; or sewer
may be on dropped shelf at one side at least 18" below water service pipe, pro-
vided that sewer pipe is laid below frost with tight and root-proof joints and is
not subject to settling, superimposed loads or vibration. water service lines
under pressure shall not pass closer than 10 feet of a septic tank, absorption
tile field, leaching pit, privy or any other part of a sewage disposal system.
(b) Sewage disposal systems located of necessity upgrade in the general path of
drainage to a well shall be spaced 200 feet or more away.
(c) Mean high water mark.
(d) If percolation rate is 0 to 3 minutes per inch, this distance becomes 200
linear feet.
e) For repair or replacement of existing systems, the distance may be a minimum
of one hundred (100) feet.
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