Project Report prepared with Moisture Mapper Process Management Software - Report prepared for:

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1 Report prepared for: Bolden s School State Road 19 Cicero, IN Phone: Web: PROJECT REPORT Project Number: Boldens June 07 Location: State road 19 Cicero, IN, Report Date: 07/16/2007 Page: 1 - Bolden s School - Project Number: Boldens June 07

2 Table of Contents Property Information Name and Location Property and Structual Data Insurance Data Ancillary Property Data Project Narrative Operational Data General Description of Loss Suspected Cause of Water Damage Detailed Findings Areas affected by water damage Recommendations for drying and replacing Final Evaluation and Reccomendations General Approach and Work Plan Project Work Plan Technical Project Summary External enviromental conditions Internal environmental conditions Moisture content of materials Equipment Applied Labor Applied Equipment, Labor, Materials, and Travel Summary Labor applied by type and date Equipment applied by serial number and date Materials applied Travel applied by vehicle and date Water Damaged Areas Area Details Drawing of Area Moisture Content Readings Moisture Map Internal Conditions Comments Photos - annotated Standard Procedures Equipment Application Guidelines Dehumidification Application Guidelines TES Thermal Systems Application Guidelines Air Scrubber Application Guidelines Air Mover Application Guidelines Page: 2 - Bolden s School - Project Number: Boldens June 07

3 Standard Investigation Guidelines Investigation Procedures Standards Environmental Conditions Instruments Used in Water Damage Restoration Procedures Environmental Considerations References Distribution of Report Property Owner / Manager Insurance Carrier (with approval of the owner/manager) Management Companies with oversight for the property Environmental Consultants (with approval of the owner/manager) Project file Page: 3 - Bolden s School - Project Number: Boldens June 07

4 Property Information Name and Location First Name Kurt Property and Structural Data Building Age 90 Last Name Bolden Building Type Prairie Address Line State road 19 Flooring Type Hardwood - Pine City Cicero Heating Source Type Oil State Indiana Heating Type Forced Hot Air Zip/Postal Code Hot Water Heater Type Electric Country United States Piping Type Copper Phone Number Roof Style Roof Type Siding Type Cross Gabled Asphalt/Fiberglass Smooth vinyl Siding Page: 4 - Bolden s School - Project Number: Boldens June 07

5 Insurance Data Insurance Company Insurance Adjuster Policy Holder N/A N/A N/A Deductible Amount $ Deductible Payment Type Policy Number Claim Number Policy Start Date Policy End Date Claim Amount Total Check N/A N/A N/A N/A N/A Page: 5 - Bolden s School - Project Number: Boldens June 07

6 Ancillary Property Data Big Picture Front of Farmhouse Back of Farm House Desiccant, front of farm house Desiccant, distribution of dry air Page: 6 - Bolden s School - Project Number: Boldens June 07

7 Location Map Page: 7 - Bolden s School - Project Number: Boldens June 07

8 Project Narrative Operational Data Date of Loss Customer Contacted Date Inspected Claim Received by Contractor Job Start Date Job End Date Rough Estimate $ Building Square Footage 4280 ft. 2 Total Volume of Building ft. 3 Reported Description of Loss Water running down the stairs from the second floor. Do not know the source of the water. Suspected Cause of the Water Damage Water Damage - Category 1 - Clear Water Detailed Findings Bathroom pipe break on the second floor. The water ran down to the living room, back dining room, crawl sapce and the finished family room. Areas Affected by the Water Damage Crawl Space Finished Play Room Living Room / back dining room upstairs room Final Evaluation and Recommendations The house was dried to its normal state of equilibrium using desiccant dehumidifiers and air movers. The drying team conducted the drying survey / process using a minimum amount of demolition. Plaster / wallboard repair is necessary at the completion of the drying process. Page: 8 - Bolden s School - Project Number: Boldens June 07

9 General Approach and Work Plan Project Work Plan Receive Loss Order Stage Status Date Completed By Whom? 1 Enter data into company system Completed Contact customer Completed Initial Visit to jobsite Order Stage Status Date Completed By Whom? 3 Work authorization signed Completed Identify and shut off source of water Completed Inspection / full building Completed Detailed findings Completed Map water damaged area Completed Property Owner 8 Document Highest readings, floors, ceiling and walls Completed Document inside psychrometric readings per drying area Completed Document outside psychrometric readings Completed Established dry standard, relative humidity goal, and air change per hour standard Completed Page: 9 - Bolden s School - Project Number: Boldens June 07

10 12 Photos of outside and each drying area Completed nd Visit to Jobsite Order Stage Status Date Completed By Whom? 13 Document / update moisture content readings per area Completed Document / update psychrometric readings Completed Add/reposition /remove equipment Completed rd Visit / Additional Visits to Jobsite Order Stage Status Date Completed By Whom? 16 Update moisture content readings Completed Document / update moisture content readings per area Completed Document / update psychrometric readings (inside / outside) Completed Reposition /remove equipment Completed Final Visit to Jobsite Order Stage Status Date Completed By Whom? 20 Final moisture content readings Completed Final evaluation Completed Final psychrometric readings Completed Page: 10 - Bolden s School - Project Number: Boldens June 07

11 23 Remove equipment Completed Final Office Documentation Order Stage Status Date Completed By Whom? 24 Complete report- initial review Completed Review / close job Completed Submit report Completed Page: 11 - Bolden s School - Project Number: Boldens June 07

12 Technical Project Summary Page: 12 - Bolden s School - Project Number: Boldens June 07

13 Equipment, Labor, and Travel Summary Labor applied by type and date Date 06/12 06/13 06/14 06/15 Personnel Position Rate OT Rate Time OT Time OT Time OT Time OT Kauts, James Technician $45.00 $ Fillmann, Craig Supervisor $75.00 $ Smith, John Labor $30.00 $ Schaeffer, David Technician $35.00 $ Regular Hours Total: 76 $ OT Hours Total: 8 $ Page: 13 - Bolden s School - Project Number: Boldens June 07

14 Equipment applied by serial number and date Date 06/12 06/13 06/14 06/15 Serial # Type Model Rate Used Used Used Used AM 0001 Air Mover ACE F259 $25.00 AM 0002 Air Mover Sahara E F350 $25.00 AM 0003 Air Mover Sahara Pro X F351 $25.00 AM 0004 Air Mover Sahara HD F352 $25.00 AM 0005 Air Mover VORTEX F174-BLU $25.00 AM 0006 Air Mover Turbo Fan 2100 $25.00 AM 0007 Air Mover Turbo Fan 2100 $25.00 AM 0008 Air Mover Turbo Fan 2100 $25.00 AM 0009 Air Mover Turbo Fan 2100 $25.00 AM 0010 Air Mover Turbo Fan 2100 $25.00 NS 1 Air Mover Xtreme Centrifigal $25.00 NS 10 Air Mover Xtreme Centrifigal $25.00 NS 11 Air Mover Xtreme Centrifigal $25.00 NS 12 Air Mover Xtreme Centrifigal $25.00 NS 13 Air Mover Xtreme Centrifigal $25.00 NS 14 Air Mover Xtreme Centrifigal $25.00 NS 20 Air Mover Xtreme Centrifigal $25.00 NS 21 Air Mover Xtreme Centrifigal $25.00 NS 22 Air Mover Xtreme Centrifigal $25.00 NS 23 Air Mover Xtreme Centrifigal $25.00 NS 24 Air Mover Xtreme Centrifigal $25.00 NS 25 Air Mover Xtreme Centrifigal $25.00 NS 26 Air Mover Xtreme Centrifigal $25.00 NS 27 Air Mover Xtreme Centrifigal $25.00 NS 28 Air Mover Xtreme Centrifigal $25.00 Page: 14 - Bolden s School - Project Number: Boldens June 07

15 NS 29 Air Mover Xtreme Centrifigal $ Desiccant Dehumidifier Arid Dry MS 600 $ Desiccant Dehumidifier Arid Dry Trailer 2000 $ Air Mover Xtreme Centrifigal $ Air Mover Thermostor Axial $ Air Mover Xtreme Centrifigal $ Air Mover Xtreme Centrifigal $25.00 Totals Days: 112 $ Page: 15 - Bolden s School - Project Number: Boldens June 07

16 Job Activity and Materials Applied to Job Item Price Quantity Total Lay Flat $ $ Total Amount: $ Travel applied by vehicle and date Date 06/12 06/13 06/14 06/15 Type Make Model Year SN# Day Rate Rate Miles Miles Miles Miles Pickup Truck Chevy PU 0001 $45.00 $ Box Truck Chevy BT 0001 $70.00 $ Mileage Total: 125 Total Amount: $ Page: 16 - Bolden s School - Project Number: Boldens June 07

17 Water Damaged Area(s) Crawl Space - Area Details Width ft. 0 in. Sq. Footage ft 2 Length ft. 0 in. Air Changes Per Hour Every 20 Minutes Height 3.00 ft. 0 in. Category Water Damage - Category 1 - Clear Water Offset 0.00 ft. 2 Class Factor 1 - No Carpet & Pad (slow) Inset 0.00 ft. 2 Description: Dirt floor crawl space with very little access S500 Area Details Recommended CFM (Desiccant) Used CFM (Desiccant) Recommended AHAM Pints (Conventional) Recommended AHAM Pints (LGR) Used AHAM (Conventional/LGR) Reccomended CFM (Air Scrubbers) Used CFM (Air Scrubbers) Air Movers Reccomended Air Movers Used 50 CFM Needed N/A 30 AHAM Pints needed minimum 30 AHAM Pints needed minimum N/A 200 CFM Reccomended N/A 13 reccomended 1 in use Page: 17 - Bolden s School - Project Number: Boldens June 07

18 Crawl Space - Diagram Crawl Space - Moisture content readings Page: 18 - Bolden s School - Project Number: Boldens June 07

19 Date Outside F Outside %RH Outside GPP Inside F Inside %RH Inside GPP DH Input GPP DH Output GPP Gallons/Day Point # Standard MC(%wme) MC(%wme) MC(%wme) MC(%wme) Location over head over head dirt floor Instrument Used: delhmhorst ser 1 Dry standards for each point are shown in a bold line of the same color Crawl Space - Internal Conditions Page: 19 - Bolden s School - Project Number: Boldens June 07

20 Crawl Space - Comments Desiccant dehumification directed into the crawl space, and two air movers installed in the back cellar windo to equilize the pressure in the crawl space. Crawl Space - Photos Back of house, air movers Finished Play Room - Area Details Page: 20 - Bolden s School - Project Number: Boldens June 07

21 Width ft. 0 in. Sq. Footage ft 2 Length ft. 0 in. Air Changes Per Hour Every 20 Minutes Height 8.00 ft. 0 in. Category Water Damage - Category 1 - Clear Water Offset 0.00 ft. 2 Class Factor 1 - No Carpet & Pad (slow) Inset 0.00 ft. 2 Description: Wall to wall carpeting, wallboad walls. S500 Area Details Recommended CFM (Desiccant) Used CFM (Desiccant) Recommended AHAM Pints (Conventional) Recommended AHAM Pints (LGR) Used AHAM (Conventional/LGR) Reccomended CFM (Air Scrubbers) Used CFM (Air Scrubbers) Air Movers Reccomended Air Movers Used 90 CFM Needed 600 CFM in use 54 AHAM Pints needed minimum 54 AHAM Pints needed minimum N/A 358 CFM Reccomended N/A 10 reccomended 10 in use Page: 21 - Bolden s School - Project Number: Boldens June 07

22 Finished Play Room - Diagram Finished Play Room - Moisture content readings Page: 22 - Bolden s School - Project Number: Boldens June 07

23 Date Outside F Outside %RH Outside GPP Inside F Inside %RH Inside GPP DH Input GPP DH Output GPP Gallons/Day Point # Standard MC(%wme) MC(%wme) MC(%wme) MC(%wme) Location wall 1, highest reading wall 2, highest reading wall 3, highest reading wall 4, highest reading floor, highest reading Instrument Used: Tramex ser 1 delhmhorst ser 1 Dry standards for each point are shown in a bold line of the same color Finished Play Room - Internal Conditions Page: 23 - Bolden s School - Project Number: Boldens June 07

24 Finished Play Room - Comments Readings were taking using a Non penetraing meter, and a penetrating meter to confirm the extent of the water damage Page: 24 - Bolden s School - Project Number: Boldens June 07

25 Finished Play Room - Photos Finished Playroom Finished Playroom IR Water Damage 1 IR Water Damage 2 IR Water Damage 3 Page: 25 - Bolden s School - Project Number: Boldens June 07

26 Living Room / back dining room - Area Details Width ft. 0 in. Sq. Footage ft 2 Length ft. 0 in. Air Changes Per Hour Every 20 Minutes Height 8.00 ft. 0 in. Category Water Damage - Category 1 - Clear Water Offset 0.00 ft. 2 Class Factor 1 - No Carpet & Pad (slow) Inset 0.00 ft. 2 Description: This area consists of wall to wall carpet in the living room, hardwood floor in the dining area, and a combination of wallboard / plaster on lather for the walls S500 Area Details Recommended CFM (Desiccant) Used CFM (Desiccant) Recommended AHAM Pints (Conventional) Recommended AHAM Pints (LGR) Used AHAM (Conventional/LGR) Reccomended CFM (Air Scrubbers) Used CFM (Air Scrubbers) Air Movers Reccomended Air Movers Used 192 CFM Needed 2000 CFM in use 115 AHAM Pints needed minimum 115 AHAM Pints needed minimum N/A 770 CFM Reccomended N/A 16 reccomended 11 in use Page: 26 - Bolden s School - Project Number: Boldens June 07

27 Living Room / back dining room - Diagram Living Room / back dining room - Moisture content readings Page: 27 - Bolden s School - Project Number: Boldens June 07

28 Date Outside F Outside %RH Outside GPP Inside F Inside %RH Inside GPP DH Input GPP DH Output GPP Gallons/Day Point # Standard MC(%wme) MC(%wme) MC(%wme) MC(%wme) Location Iving room wall 1, highest reading living room wal 2, highest reading living room, wall 3 highest reading living room wall 4, highest reading living room, floor, highest reading ceiling, living room ceiling, living room ceiling back room, wall 9, highest reading wall 10, back room, highest reading back room, wall 11, highest reading Instrument Used: Tramex - serial 001 Dry standards for each point are shown in a bold line of the same color Page: 28 - Bolden s School - Project Number: Boldens June 07

29 Living Room / back dining room - Internal Conditions Living Room / back dining room - Comments The living room and the back dining room was segregated into one drying area. Desiccant dried air, and air movers were used to dry the area to normal equilibrium. Living Room / back dining room - Photos Living Room / Dining Room Living Room / Dining Room upstairs room - Area Details Page: 29 - Bolden s School - Project Number: Boldens June 07

30 Width ft. 0 in. Sq. Footage ft 2 Length ft. 0 in. Air Changes Per Hour Every 20 Minutes Height ft. 0 in. Category Water Damage - Category 1 - Clear Water Offset 0.00 ft. 2 Class Factor 2 - With Carpet & Pad (fast) Inset 0.00 ft. 2 Description: Source of water came from this room. Wood floors, plaster and lathe walls. S500 Area Details Recommended CFM (Desiccant) Used CFM (Desiccant) Recommended AHAM Pints (Conventional) Recommended AHAM Pints (LGR) Used AHAM (Conventional/LGR) Reccomended CFM (Air Scrubbers) Used CFM (Air Scrubbers) Air Movers Reccomended Air Movers Used 200 CFM Needed N/A 75 AHAM Pints needed minimum 60 AHAM Pints needed minimum N/A 200 CFM Reccomended N/A 6 reccomended 8 in use Page: 30 - Bolden s School - Project Number: Boldens June 07

31 upstairs room - Diagram upstairs room - Moisture content readings Page: 31 - Bolden s School - Project Number: Boldens June 07

32 Date Outside F Outside %RH Outside GPP Inside F Inside %RH Inside GPP DH Input GPP DH Output GPP Gallons/Day Point # Standard MC(%wme) MC(%wme) MC(%wme) MC(%wme) Location wall 1, highest reading wall 2, highest reading wall 3, highest reading wall 4, highest reading floor, highest reading floor, highest reading Instrument Used: Tramex - serial 001 Dry standards for each point are shown in a bold line of the same color Page: 32 - Bolden s School - Project Number: Boldens June 07

33 upstairs room - Internal Conditions upstairs room - Comments The upstairs bedroom was dried using desiccant dried air, and air movers. Page: 33 - Bolden s School - Project Number: Boldens June 07

34 upstairs room - Photos upstairs room upstairs room stairs upstairs room Page: 34 - Bolden s School - Project Number: Boldens June 07

35 Standard Procedures Dehumidification Application Guidelines Equipment Application Guidelines The following method can be used to determine the amount of dehumidification, either conventional refrigerant, LGR refrigerant or desiccant, to dry a structure after water damage. These guidelines are based on the IICRC s S500 standard version Determine the volume of the area that is water damaged and can be isolated from other open areas. Length X Width X Height = Cubic feet of space where dehumidification is required 2. Determine the Class of the Water Damage. Class 1 (least amount of water, absorption and evaporation) Class 2 (large amount of water, absorption and evaporation) Class 3 (greatest amount of water, absorption and evaporation) Class 4 (specialty drying situations) Water damage restoration projects that affect only a part of a room or area; or larger areas containing materials that have absorbed minimal moisture. Little or no wet carpet and/or cushion are present. Water damage restoration projects that affect at least an entire room of carpet and cushion (pad). Water has wicked up walls less than 24 inches. There is moisture remaining in structural materials (e.g., plywood particle board, structural wood, VCT, concrete and substructure soil). Restoration projects in which water has wicked up walls greater that 24 inches, or it enters from overhead affecting the ceiling, walls, insulation, carpet, cushion, and subfloor. The entire area is saturated. These consist of wet materials with very low permeance/porosity (e.g., hardwood, plaster, brick, concrete, light wet concrete and stone).typically, there are deep pockets of saturation, which require very low relative and specific humidity for drying. Source: IICRC S500 Standard and Reference Guide for Professional Water Damage Restoration Ed.3 (Washington: Institute of Inspection, Cleaning and Restoration Certification, 2006) P 311. For Conventional Refrigerants divide the cubic footage by the following factors: Class 1 Cubic footage / 100 Class 2 Cubic footage / 40 Class 3 Cubic footage / 40 Class 4 N/A Page: 35 - Bolden s School - Project Number: Boldens June 07

36 For LGR Refrigerants divide the cubic footage by the following factors: Class 1 Cubic footage / 100 Class 2 Cubic footage / 50 Class 3 Cubic footage / 40 Class 4 Cubic footage / 50 For Desiccant Dehumidifiers multiply the cubic footage by the following factor, then divide by 60: Class 1 Cubic footage X 1 / 60 Class 2 Cubic footage X 2 / 60 Class 3 Cubic footage X 3 / 60 Class 4 Cubic footage X 2 / 60 The result of this calculation will let you know how many CFM are needed on this job. It is often necessary to use more than one dehumidifier to make up the required CFM for the desired number of air changes. Moisture Mapper has entered the industry standard equipment ratings into the program, allowing you to choose from a pull down menu. Page: 36 - Bolden s School - Project Number: Boldens June 07

37 TES Thermal Systems Application Guidelines The following method is used to determine the amount of equipment that is required when using the TES heating method of drying: TES 250K and the TES 200K (thermal energy system units) are boilers that are placed outside of the structure, and can power up to six boxes. Each 200k TES can power five TEX boxes. TEX (thermal exchange boxes) are the exchangers (boxes) that are put in the structure along with a fan. The application rate is as below: Each TES with five TEX boxes. It can cover up to 1250 square feet for WFD direct containment and up to cubic feet uncontained. For carpet containment: Each TEX covers one carpeted area from square feet. The carpet must float completely without flapping. For direct plastic containment of hard surfaces: Each Tex covers from square feet. For open areas that are not directly contained: Each TEX covers 8000 cubic feet when combined with heat from HVAC system, but cannot be considered WFD set up this way. Page: 37 - Bolden s School - Project Number: Boldens June 07

38 Air Scrubber Application Guidelines An air scrubber captures removable airborne particles and traps them in a disposable HEPA filter. With an activated carbon and potassium permanganate blend absorption filter, a wide range of odors can also be removed. Air scrubbers should be used on water damage restoration, demolition and construction projects where airborne contaminants such as mold, mildew, or other particles are present. A general rule for the application of an Air Scrubber is a minimum of four air changes every hour, or one air change every fifteen minutes. Using a typical air scrubber that provides 1400 CFM of airflow per minute, the following provides a method for determining the number of units that are required. 1. Determine the volume of the area that requires an air scrubber and can be isolated Length X Width X Height = Cubic feet of space where the air is to be cleaned 2. To determine the amount of air flow that is required, take the cubic feet of the space and divide by the number of minutes desired for an air change: For one air change every 15 minutes, or four air changes per hour Cubic feet of space to be scrubbed / 15 minutes = CFM of Air Scrubbers Required 3. It is often necessary to use more than one air scrubber to make up the required CFM for the desired number of air changes. Page: 38 - Bolden s School - Project Number: Boldens June 07

39 Air Mover Application Guidelines The number of air movers required is often subjective, but can be estimated based upon the area to be dried. As a rule of thumb, the more aggressive the air movement, the greater the rate of evaporation assuming that the air in contact with the surface to be dried can hold additional moisture. The air should be aggressively moved throughout a room in a circular pattern with additional upward movement to prevent stratification, or layers of untreated air. Specifically, the air should be directed across floors, walls, ceilings and contents in order to accelerate the evaporation of moisture at the surface of the material to be dried. This circular motion should then be concentrated on specific areas to be dried, Particular attention should be paid to areas that may be isolated from the normal circular motion of the air, i.e. window bays, closets, smaller rooms, voids, floor ducts, etc. Each one of these areas should be checked to ensure air movement. The following general rules can be used for determining the number of air movers required: Air Movers / Carpet Fans one unit every 12 to 20 lineal feet of wall, or square feet of floor Page: 39 - Bolden s School - Project Number: Boldens June 07

40 Investigation Procedures Standard Investigation Guidelines A loss assessment of water damage at State road 19, Cicero, IN was performed using standards and procedures as established by the IICRC S500 (Institute of Inspection, Cleaning and Restoration Certification Standard) and other industry standards as appropriate. The actual procedures that were used are based upon reliable restoration principles, research and practical experience, trade associations serving the professional disaster restoration industry, chemical formulators and equipment manufacturers, cleaning and restoration training schools, the insurance industry, the scientific and health services community, and others with specialized experience. The collection of data included a thorough on-site inspection of the facility using environmental temperature / humidity and moisture content instrumentation; interviews with the property manager and tenants; a review of documents and drawings of the structure; and an on-site inspection of a similar building located on the same property. A standard for temperature / humidity levels and moisture content of materials was established. A categorization of the level of contamination of water was established at category 1. Category 1 water is referred to as "Clean Water". Clean water originates form a source that does not pose substantial harm to humans. Examples of clean water sources may include, but are not necessarily limited to, broken water supply lines, sprinkler systems, tub or sink overflows with no contaminants, appliance malfunctions involving water supply lines, melting ice or snow, falling rainwater, broken toilet tanks and toilet bowls that do not contain contaminants or additives. Note that clean water that has contact with structural surfaces and content materials may deteriorate in cleanliness as it dissolves or mixes with soils and other contaminants, and as time elapses. Category 2 water is referred to as "Gray Water". Gray water contains a significant level of contamination and has the potential to cause discomfort or sickness if consumed by or exposed to humans. Gray water carries microorganisms and nutrients for microorganisms. Examples of gray water sources may include, but are not necessarily limit to, discharge from dishwashers or washing machines, overflows from washing machines, overflows from toilet bowls with some urine (no feces), sump pump failures, seepage due to hydrostatic pressure, broken aquariums and punctured water beds. Gray water may contain chemicals, biocontaminants (fungal, bacterial, viral, algae) and other forms of contamination including physical hazards. Time and temperature aggravate category 2 water contamination levels significantly. Gray water in flooded structures that remains untreated for longer than 48 hours may change to category 3 - black water. Category 3 water is referred to as "Black Water". Black water contains pathogenic agents and is grossly unsanitary. Black water includes sewage and other contaminated water sources entering or affecting the indoor environment. Category 2 water that is not removed promptly from the structure may be reclassified as category 3 water. Toilet backflows that originate from beyond the toilet trap is considered black water contamination, regardless of visible content or color. Category 3 water includes all forms of flooding form seawater, ground surface water and rising water form rivers r streams. Such water sources carry silt and organic matter into structures and create black water conditions. Additionally, the water is considered to be category 3 water in situations where structural materials and/or contents have been contaminated with such contaminants as pesticides, heavy metals, or toxic organic substances. Page: 40 - Bolden s School - Project Number: Boldens June 07

41 Following the removal of standing water, a detailed inspection was conducted that considered the extent of water migration, the types and quantities of affected materials and the degree of apparent damage. The information obtained was used to analyze the extent of the damage and to further determine the scope of the job. Professional testing equipment and the principles of psychrometry was used to formulate a plan to dry and restore, or replace both structural materials and contents. The comprehensive inspection included: Identifying and evaluating health and safety hazards; Determining the source of water; Determining the need to protect floor covering materials and contents; Determining the extent of moisture intrusion; Evaluating and assessing structural materials; Evaluating and assessing inventories and contents; Evaluating the HVAC system; Documenting preexisting conditions not related to the current loss; Establishing drying goals; and Determining the scope of the mitigation process to support the total restoration plan. Based upon the above procedures, a proposal was provided to remove standing water, and to dry the structure to its normal state of equilibrium using desiccant and refrigeration based dehumidification systems and specially designed air moving equipment Page: 41 - Bolden s School - Project Number: Boldens June 07

42 Standards Structural materials and contents have a certain percentage of moisture for the environment in which they exist. The "normal equilibrium", or moisture content of hygroscopic materials, varies depending upon both relative humidity and temperature in the surrounding air. When these materials are neither gaining nor losing moisture, equilibrium moisture content has been reached. The dry standard is determined by taking moisture content readings from known dry materials in an undamaged area or similar structure, and using these readings to establish a drying goal. Each floor of the building has been divided into segments where the initial moisture content of the structure was established. Then, a dry standard was established as a target, and the appropriate environment was created to dry the structure. The drying process was monitored, altering the application of dehumidifiers, air movers, and temperature to create the proper environment to dry the appropriate material. Particular attention was directed toward areas where drying was slow, or non existent Moisture content of materials is a function of the environment in which they exist. Material exposed to high relative humidity will seek a moisture content equilibrium consistent with the high relative humidity. These materials are regarded as hygroscopic in that they attract moisture from the air. Conversely, materials exposed to low relative humidity will give up moisture, dry out, and stabilize at a low moisture content equilibrium. The following is a graphic depiction of moisture content as a function of exposure to relative humidity. The ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc) standard noted above is the design standard for relative humidity in buildings. Accordingly, materials will equilibrate within the shaded area. In addition to being exposed to high relative humidity associated with water damage, materials go through a cycle of picking up moisture, and giving up moisture due to normal seasonal changes in temperature and humidity. Thus the design condition is 35% to 60%. The following drawing shows the Page: 42 - Bolden s School - Project Number: Boldens June 07

43 climate zones and thermal regions that will have differing effects on the moisture content of materials. Climate Zones from Builder s Guide, Building Science Corporation Page: 43 - Bolden s School - Project Number: Boldens June 07