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30A-032 Binder 10.28.11M e t c a l f e A s s o c i a t e s architecture & interior design 142 Main St. Northampton, MA, 01060 Tristram W. Metcalfe III, Ma. Reg. 5393 Phone number > 413 586 5775 Cell number > 413 695 8200 Email > twm3@rcn.com NCARB, NYS, MA, CT registrations WMAIA AIA October 27, 2011 Louis Hasbrouk, [413 587 1239] Building Inspector City of Northampton Puchalski Municipal Building, 212 Main Street, Northampton, MA 01060 RE; Renovations building permit FOR; zea mays printmaking Loc; The Cutlery Building, #2, Riverside Drive, Bay State, Northampton, Ma Dear Louis, Thank you for our meeting yesterday on the above. I have attached all the issues you addressed in the pdf collection document. They were; 1. clear description of business model on public uses; A letter from ZMP dated 10/26/11 is included. 2. categorize chemicals as to hazard; noted below etching [oxidizer?] at their quantity on site are well below charted 3. statement of quantities; is in Zea mays 10/26 letter 4. statement of storage details for all hazardous materials; is in Zea mays 10/26 letter 5. occupant load by space; is on revised drawing 6. comment on shower use; In an email ZMP stated no shower uses nor chemical emergency eye wash issues exist. Note; [I have italicized the code copy-pastes so you can read past them where desired] Our client Zea Mays Printing after purchasing the above location, wants to get a permit to change the use from Business Storage [S-1] selling garments in the mail with minor public access, into a studio Printing business [F-1] that uses photo printing chemicals with minimal storage of same. We list the chemicals at bottom and attach a material safety data sheet pdf. It is a fact that this space was used recently prior to the S-1 storage use as a printing facility and would therefore not be a use change from that prior occupancy. The 521CMR accessibility requires two up grades for access to the main floor as it is only storage or redundant identical uses on the second floor available also at first floor. An accessible unisex bathroom will be re-created as shown with two doors because of program use requirements. The total maximum occupancy is 12 people and with bath room on main floor it is well below occupancy load. 2 more bath rooms exist on the 2nd floor for staff. The second up grade is for wheelchair access into the space. We propose a 12:1 slope ramp with 48” between railings @ 18” & 36” hts. It will be on the front leading to the main entrance as shown approximately 17 feet long. The codes used are CMR780 - MA Amendments to the IBC, IEBC - International Existing Building Code, Code521 CMR - MA accessibility regulations which is also in IEBC 310. Under IEBC we correct existing situations as follows; Section 101.5 OPTION 1: Work for alteration, repair, change of occupancy, addition or relocation of all existing buildings shall be done in accordance with the Prescriptive Compliance Method given in Chapter 3. [The similar method is provided in Chapter 34 of the International Building Code]. 303.6 Means of egress capacity factors. We have a narrow stair width but it is allowed to remain since they are from second floor and the stairs widen over required width half way down. An old access on the second floor needs to be fire rated as it is only a secured metal door with light shining through its unstopped head frame. We have a secondary means or egress form 2nd floor through Building #1 It will be made into a 2 hr double 5/8” separation. If no access is allowed to brigde connector owners space then we will do a compliance alternative to fire-calk the door to frame and then min 1” air space metal strap and cover our side only since we can call the door equivalent to double 5/8” which it exceeds. SECTION 307 CHANGE OF OCCUPANCY 307.1 Conformance. No change shall be made in the use or occupancy of any building that would place the building in a different division of the same group of occupancy or in a different group of occupancies, unless such building is made to comply with the requirements of the International Building Code for such division or group of occupancy. Original existing use was a print ink handling facility, but it was down graded to S-1 storage, which we will change back to the original from. 311.2 Moderate-hazard storage, Group S-1. IBC 306.2 Factory Industrial F-1 Moderate-hazard Occupancy. 912.2.1 Fire sprinkler system. Where a change in occupancy classification occurs that requires an automatic fire sprinkler system to be provided based on the new occupancy in accordance with Chapter 9 of the International Building Code, such system shall be provided throughout the area where the change of occupancy occurs. 912.2.2 Fire alarm and detection system. Where a change in occupancy classification occurs that requires a fire alarm and detection system to be provided based on the new occupancy in accordance with Chapter 9 of the International Building Code We will add fire detection sensors to the spaces with alarms and fire pulls as shown on plans. TABLE 912.6 EXPOSURE OF EXTERIOR WALLS HAZARD CATEGORIES RELATIVE HAZARD OCCUPANCY CLASSIFICATION 2 F-1, M, S-1 The existing fire protection sprinkler system is a full 6” diameter standpipe supply, which indicates to me it’s a full NFPA 13 code capacity supply as long as the heads are currently certified and recent inspections may indicate such. TABLE 307.1(1) MAXIMUM ALLOWABLE QUANTITY PER CONTROL AREA OF HAZARDOUS MATERIALS POSING A PHYSICAL HAZARDa, j, m, n, p [F] 414.5 Inside storage, dispensing and use. The inside storage, dispensing and use of hazardous materials in excess of the maximum allowable quantities per control area of Tables 307.1(1) and 307.1(2) shall be in accordance with Sections 414.5.1 through 414.5.5 of this code and the International Fire Code. [F] SECTION 307 HIGH-HAZARD GROUP H 307.1 High-hazard Group H. High-hazard Group H occupancy includes, among others, the use of a building or structure, or a portion thereof, that involves the manufacturing, processing, generation or storage of materials that constitute a physical or health hazard in quantities in excess of those allowed in control areas complying with Section 414, based on the maximum allowable quantity limits for control areas set forth in Tables 307.1(1) and 307.1(2). Hazardous occupancies are classified in Groups H-1, H-2, H-3, H-4 and H-5 and shall be in accordance with this section, the requirements of Section 415 and the International Fire Code. Hazardous materials stored, or used on top of roofs or canopies shall be classified as outdoor storage or use and shall comply with the International Fire Code. [F] Exceptions: The following shall not be classified as Group H, but shall be classified as the occupancy that they most nearly resemble. The closet exception is; 10. Corrosives shall not include personal or household products in their original packaging used in retail display or commonly used building materials. I am making an observation based on my searching through the above two 307.1 tables for the chemicals below which I find only as oxidizers. I state that the amounts of stored materials are so low and I find reference to house hold chemicals and low quantities of them are exempt which would apply in my judgment to the bulk of what chemicals they have indicated for Zea mays printing. Chemistry used at Zea Mays Printmaking For etching Ferric Chloride Solution Chemical name: Iron Chloride Solution (Inorganic Salt FeC13) 10 gals. Mixed with water and stored in closed tank - Howard's Pro-Vertical Etching Tank, a freestanding, leak-free vertical tank with lid. It's made of polyethylene, rotation molded for great structural strength. Cleaning bath made of Sodium Carbonate (Arm and Hammer Washing Soda) and water – stored in Rubbermaid plastic bin with lid Deoxidizing bath made of white vinegar and table salt – stored in Rubbermaid plastic bin with lid Printmaking inks – oil and waterbased – stored in metal cabinet Burnt plate oil (linseed oil) – stored in metal container Vegetable oil – stored in plastic dispenser. Rags that have been used to clean up with vegetable oil are stored in metal safety storage receptacles and are picked up by a rag service weekly. For Photopolymer Toyobo Printight Photopolymer plates – a laminated sheet of thin steel coated with a photosensitive polymer (msds attached). These are developed in tap water. The plates are stored in black plastic, then in cardboard box in dark, cool room. Zea Mays Printmaking has been using this chemistry since its inception in 2000 in the Arts and Industry building. They have had an emphasis on non-toxic, environmentally safe, healthy exposure use levels and hazardous storage considerations with close concern. The studio has been inspected by the fire department annually and has passed every year without a single citation. Please let me know if there is any other information you seek. Thank you. Sincerely, Tris Metcalfe Louis Hasbrouck City of Northampton Building Inspector Northampton, MA 01060 October 26, 2011 Dear Mr. Hasbrouk, Per your request via Tristram Metclafe, here is a description of the business conducted by Zea Mays Printmaking, which will be the occupant of the building at 320 Riverside Dr. Zea Mays Printmaking is a professional artists’ studio dedicated to sustainable and non-toxic printmaking practices. We have a membership of artists who use the studio and offer workshops for artists to learn the safest and healthiest ways to make hand-pulled, fine art prints (i.e. etchings, silkscreens, woodcuts) The first floor of the studio at 320 Riverside Dr. will house our classroom, studios, exhibition area and archives. Our classes are limited to 10 people maximum. With one instructor and one assistant, the total number of people max. would be 12 at a time. The first floor will be the pubic access floor where our students, members and visitors can come to take workshops, make prits and see the work we have in our archives. The second floor of the studio will be for staff and storage only. I, as director, will have my office and studio space upstairs. We will also use it to store our supplies. In regards to the chemicals that are stored on site. We etch our copper plates in enclosed vertical etching tanks that contain 4 gals. each of ferric chloride (42 degree baume). We store an extra gallon of ferric chloride in a metal safety cabinet. The other chemicals we use are basic household cleaning materials and will be stored in a supply closet. They include: sodium carbonate (Arm and Hammer washing soda from the laundry aisle), soy sauce, white vinegar, salt, Simple Green, dish soap, vegetable oil. We use water-based inks (approx 25 – 1 lb cans), which clean up with soap and water and solvent free oil based inks (approx 25 – 1 lb cans) which clean up with vegetable oil and soap and water. I would be happy to provide with any more information you need. Regards, Liz Chalfin, Director Zea Mays Printmaking Information current as of January 1, 1999 Supplier: NOVA POLYMERS, INC. PO Box 1305, West Caldwell, NJ 07007 888-484-6682 For PRINTING, SIGNAGE PLATES and RELATED MATERIALS Manufacturer’s name: TOYOBO Co., Ltd. (polymer layer only) Emergency Telephone Number: 06-348-3059 Information phone number: 06-348-3059 Trade Name and Synonyms: NovAcryl, Printight Product Class: PETG, Aluminum, Laminates, EcoResin HAZARDOUS COMPONENTS OSHA PEL ACGIH TLV (units) Recommended % (optional) Methacrylic acid (Cas No 79-41-4) 20 ppm 3 Methanol (Cas No 67-56-1) 200 ppm 200 ppm NIOSH 200 ppm CHEMICAL FAMILY: Polyamide Based Photopolymer, solid type PHYSICAL DATA Boiling Point (C): N/A Specific Gravity (H20=1): 1.2 (68F) Vapor Pressure (mmHg): Solid at room temperature Evaporation Rate (Butyl Acetate = 1) N/A Vapor Density (air=1): N/A Melting Point (C): 110 Celsius Solubility in Water: 10% Appearance and Odor: Light brown solid resin. Slightly sweet odor. FIRE AND EXPLOSION HAZARD DATA Flash Point No data Flammable limit (vol.%) N/A Extinguishing Media: Water, CO2, Foam, Dry Chemical Unusual fire and explosion hazards: Not considered a flammable material under normal use Special fire fighting procedures: Wear MSHA/NIOSHA approved self-contained breathing apparatus and full cover impervious clothing. REACTIVITY DATA Stability: Stable Conditions to avoid: Material becomes unusable for intended function if exposed to ultraviolet light. Preserve in cool and dark place and handle only under safe, yellow lamps. Keep away from heat, spark, flame and any other sources of ignition. This material is stable under normal storage and handling. Incompatibility (materials to avoid): Water and light (photo) and other oxidizing agents. Hazardous decomposition or by-products: May form toxic substances: carbon monoxide, nitrogen oxide chlorine compounds, etc. Hazardous polymerization: Will not occur MATERIAL SAFETY DATA SHEET HEALTH HAZARD DATA Primary routes of entry: Inhalation: Yes Dermal: Yes Ingestion: Yes Health Hazards (acute and chronic): Direct eye or skin contact with raw product may cause irritation. Nausea by solvent vapor inhalation. Carcinogenicity: NTP: n/a 1ARC Monographs: n/a OSHA Regulated: n/a Signs and Symptoms of exposure: Dizziness. Headache. Irritation Medical conditions generally aggravated by exposure: Dermatitis Emergency and First Aid Procedures: EYE CONTACT: Immediately flush with water for 15 minutes. Get medical attention. SKIN CONTACT: Wash area with soap and water. INHALATION: Remove to fresh air. INGESTION: Get medical help immediately. PRECAUTIONS FOR SAFE HANDLING AND USE Procedure when material is spilled: Material is solid, cannot be spilled. In case of transport damage to packaging, material or container, material to be salvaged must not have been exposed to ultraviolet light. Waste Disposal method: Processed plates may be treated as scrap. Follow local regulations. Precautions to be taken in handling and storing: Store below 100 degrees Fahrenheit in a dry area. Do not store near heat sources. Material is light sensitive. Do not open package until ready to use. Handle in U/V protected light only. Must be stored flat. Avoid skin contact with sheet material during processing. When handling plates during processing, gloves are necessary to avoid contact with the wash solution. Other precautions: Empty containers contain hazardous product residues, both liquid and vapor. Avoid skin contact and breathing vapor. CONTROL MEASURES Ventilation: Yes, generally required to reduce exposure to below allowable levels. Only at the point of use. Mechanical (general): Fan Protective items: Use rubber or vinyl gloves. Eye protection is recommended. Work/hygienic practices: Wash hands and face after processing plates. Use skin care lotion. ADDITIONAL REMARKS None MATERIAL SAFETY DATA SHEET Page 2 Waste water and odor compositon Basic ingredients in NovAcryl photopolymer layer are as follows: Main raw material: Polyamide polymer and photopolymerable monomers containing acryloyl group. Additive: Low molecular saturated compound containing amino group and Hydrocyderivitive. Safety of this photopolymer layer was confirmed by using LD-50 feeding test. Items Density pH 6 – 7 Chemical Oxygen Demand 6000 ppm Biological Oxygen Demand 1400 ppm Iodide Consumed Under 10 Suspended Solid Under 10 Note: the above density readings are based on a 1% waste water concentration of NovAcryl photopolymer layer. If the area in a negative film to be washed out is around 50%, one percent concentration would equal 8 sheets of 19” x 25” plates. Toxicology tests were performed and the photosensitive layer was proven “not harmful.” Below are the test methods and subsequent results: Test Method/Result Acute Oral (mouse) LD-50 / 3.5 G/KG Eye irritation (Rabbit) Minus Ames Assay Minus Human Patch Test Minus The odor caused by the effluent photopolymer layer is caused by its cross-linking agent. The cross-linking agent is activated by Ultra Violet light. It is an oxidized material and is registered by CAS. MATERIAL SAFETY DATA SHEET Page 3