38A-103 (6) ■
Page tofZ
Slegftiod Perth
Pram° Bryant Jonathan Ugb@danthermfiltration.uomj
sent: Thursday, June 05,2008 11:06 AM
To: Bruce Volz
Cc: Tony Clarke; Siegfried Perth; Chooholko, Yuri
Subject: RE: VCA
Bcu9.,
Do you have an Wed of how much duet you are collecting per day or per hour currently or wilt be in the
future. We can probably give your guy a theoretical estimate that you would average throughout the
day. Not sure if this will be sufficient for your inspector. The best thing will be for them to test the
- system..once it is operational to determine the real#.
But for example; _
Lets say you are averaging 1500 lbslhr(Using 15ibslft"3 for typ.Wood dust)which would be filling a
dust riper cubic ft of would 0.0025 ibs1R"3 z 17.5 grainns/ft"3.u`The 500 lbemr is about max for the
CS filter.
This is a pretty basic calculation but it's going to be about as good as we can do without actually testing
the air.
Please call with any questions.
IJonathan Bryant
Denlhorin Filtration
T: 336.821-0825
.#
Sri9-it 5
1'44e fair
JUN - 0 2008
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SIEGFRIED `---P-OrRTi�fi _ '_�j --=
ARCuuITEcT
A.I.A.
116 PLEASANT ST.
SUITE 331
EASTHAMPTON , MA 01027
PHONE: 413.529
TO:CITY OF NORTHAMPTON, MA
ATTENTION:
LOUIS HASBROOK
BUILDING INSPECTOR
SUBJECT: VCA INC.WOODWORKING
209 EARLE STREET
RE: DUST IN THE AIR
TABLE 3078[1]
EXEMPT AMOUNT OF HAZARDOUS MATERIALS.
MAXIMUM QUANTITIES PER CONTROL AREA
COMBUSTIBLE POUNDS CUBIC
ALLOWABLE POUND PER BC FEET
WE HAVE 342,346 CU. FT.OF SPACE DIVIDED BY 1000 CU- FT.=342 POUNDS OF DUST
MAX_ALLOWED:
NOTE E. 100 INCREASE WHEN STORED IN APPROVED EXHAUSTED ENCLOSURES-
THE R E. RE:
THERE>=ORE:OUR MAX 1026 A ALLOWED S 1 IN THE AIR FOR OUR VOLUME OF SPACE=
342 POUNDS TIMES 3
PLEASE REFER TO THE.41TACHED CALCULATION BY`DANTHERM FILTRATION"
I HOPE THIS IS SATISFACTORY FOR THE ELECTRICAL INSPECTOR.
SING ELY, Alp
SIEGFRIED PORTH
ARCHITECT
Crtl4 .crf Nr rrthim rtzn
ea ass arhusrtts
DEPARTMENT OF BLILDI\G IMSPECT10_\ '
212 Main Street • Municipal Buacine
Northampton, MA 01060
\, PLCri'O='
Siegfried Porth
116 Pleasant Street
Suite 331
Easthampton, MA 01027
June 9, 2008
In re VCA,
209 Earle Street
Northampton, MA 01060
Dear Siegfried,
We are reviewing the plans and specifications for the furniture manufacturing facility under
construction at 209 Earle Street here in Northampton. Our electrical inspector, George Fournier, has
concerns about the wiring methods in the production areas of that building.
The electrical code (NFPA 70), article 500, section 500.5 requires that locations be classified
depending on the properties of the...combustible dusts...that may be present and the likelihood that
a...combustible concentration or quantity may be present. It appears that the production area could be
classified as a Class II, Division 2 area based on section 500.5 (C) (2) (3). Dust accumulation on, in or
in the vicinity of electrical equipment seems a distinct possibility. NFPA 499, Recommended Practice
for the Classification of Combustible Dusts, gives guidance on whether the area in question must be
considered a classified area. The factors that determine whether an area needs to be classified include
(but are not limited to) the combustible materials involved, particle size of the materials, dust removal
systems, housekeeping and existing facility history.
Please submit an assessment of the production area based on the criteria detailed in NFPA
499, and specify the protection techniques required (if any).
Feel free to call if you have any questions. Our telephone number is 587-1240 and our office
hours are Monday through Friday, 8:30 am to 4:30 pm, excepting that we close at 12:00 noon on
Wednesdays. My email address is: Ihasbrouck @city.northampton.ma.us.
Thank you for your cooperation in this matter.
Louis Hasbrouck
City of Northampton
Local Inspector and Zoning Enforcement
Ihasbrouck @city.northampton.ma.us
cc George Fournier, City of Northampton
Crocker Building Company
4'