County of Santa Cruzsccounty01.co.santa-cruz.ca.us › BDS › GovStream2 › BDSvData › ... · 2008-12-16 · December 4, 2008 AGENDA: December 16,2008 BOARD OF SUPERVISORS County

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County of Santa Cruz HEALTH SERVICES AGENCY

POST OFFICE BOX 962,1080 EMELINE AVE., SANTA CRUZ, CA 95061-0962 TELEPHONE: (831) 454-4000 FAX: (831) 454-4770 TDD: (831) 454-4123

HEALTH SERVICES AGENCY ADM I Nl STRATION

December 4, 2008 AGENDA: December 16,2008

BOARD OF SUPERVISORS County of Santa Cruz 701 Ocean Street, Fifth Floor Santa Cruz, CA 95060

SUBJECT: Air Quality Issues in the Town of Davenport

Dear Members of the Board:

As you will remember, on October 3, 2008, Monterey Bay Unified Air Pollution Control District (Air District) notified your Board of a serious air quality problem due to elevated levels of hexavalent chromium (Chrome 6) in fugitive dust, being emitted by the cement plant (Cemex). On October 7, 2008, your Board directed the Health Services Agency Director to investigate the findings of the Air District and take actions to evaluate any health impacts in Davenport. This letter represents the third in a series of reports to your Board regarding this issue. The prior letters and reports were on your Board’s regular agendas for October 21,2008 and November 18, 2008. The purpose of this letter is to provide you with an update of our findings since our last report.

Air Monitorinq Proqram

Since October 5, 2008, the Air District has been implementing various air monitoring programs, centered on Pacific Elementary School and posting the results on their website. On November 1, 2008 County EHS’s contractor initiated additional air sampling (Phase I ) , which had the capability of detecting levels of Chromium VI as well as other metals at very low detection limits. The results from the contractor’s testing are posted on the County’s website as soon as they are validated by a third party validation group. The following locations are being monitored under the County’s consu I ta nt prog ram :

o Outside School o Inside School Classroom o Fire Station o Fence line- Cemex plant o Background- Swanton Rd.

On November 12‘h, CEMEX began a 48-hour test to evaluate two different reducing agents, stannous sulfate (SnS04) and ferrous sulfate (FeS04) as an additive to their Finish Mill process. The purpose of the additive was to reduce the hexavalent chromium (Cr VI) in the stockpiled clinker to the relatively nontoxic trivalent chromium (Cr I l l ) . The test ran from 530 pm on November 1 2‘h until 5:30 pm on November 14,2008. Air monitoring by the County’s

Air Quality Issues in the Town of Davenport Agenda Date: December 16,2008 Paae 2 of 4

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consultant (Part I of Phase I I ) was conducted beginning at noon on November 12th and continued until noon on November 1 !jth, 2008. CEMEX shut this process down on the 15‘h and awaited the results of the air monitoring from the test period. It was determined that the November I 3‘h air monitoring results were most representative of potential Cr VI air concentrations during Finish Mill operations with reducing agents added. Since the concentrations found on November 13‘h were all below the Proposition 65 reporting limit, and in the absence of any other threshold set by the Air District, CEMEX resumed the grinding of the 25,000 tons of stockpiled clinker on November 21st. It is estimated that it will take the plant ten to 14 days to finish the grinding of this material. During this ten to 14 day period, the Air District will continue their daily air monitoring at Pacific Elementary School and the County’s contractor will conduct two additional days of air monitoring at their five locations (Part II of Phase 11).

The testing being conducted by the County’s consultant for Chromium VI is being done by the Total Suspended Particles (TSP) method and by the PM 10 method for all potentially hazardous metals. The metals analysis requires a much longer laboratory turn-around time and this is the reason that none of the metals results have been posted on the website as yet. The County’s consultant is expected to have the metals results from the Phase I baseline study ready to post on the website by December 16th.

Wipe Samplinq Results

Environmental and Occupational Risk Management (EORM), working as a subcontractor for the County’s contractor, performed surface wipe sampling for hexavalent chromium at the Pacific Elementary School, Boony Doon Union Elementary School, and the Cal-Poly site on Swanton Road. The purpose of this sampling was to acquire data to assess the presence of hexavalent chromium on surfaces accessible to school children and staff at the Pacific Elementary School and compare that data with similar sites outside the range of any influence from the cement plant. “In summary, the concentration range of indoor hexavalent chromium levels on sampled surfaces at Pacific Elementary School were generally similar to those measured at the two control sites.’’ All surface sample concentrations at all three sites tested had hexavalent chromium concentrations that were significantly lower than the established health based benchmarks or screening goals. A copy of the EORM Report is attached for your reference as Attachment 1.

As an additional measure of caution, CEMEX hired a company to clean the all the ducting in the school’s heating, ventilation, and air conditioning system, as well as many other surfaces (walls, ceiling, fixtures, and carpet). This thorough cleaning took place over the Thanksgiving holiday.

Soil Samplinq Results

Soil samples were collected on Monday, November 17, 2008. The data is currently in the hands of the data validation group and will be posted on the County’s website as soon as it has completed this process. The report from the geological firm that collected the soil samples is not expected to be submitted until the end of December or early January. This report will be provided as an attachment to staff’s next Board letter.

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Cement Plant Operations

The Cement Plant operations have varied considerably during the overall monitoring period. Management at the plant has maintained close communications with the Air District, County Environmental Health, and the Pacific Elementary School staff.

The final phase of air monitoring (Phase Ill) by the County’s consultant is scheduled for mid- December when CEMEX will bring up the kiln. CEMEX is tentatively scheduled to begin the warm-up process on Sunday, December 7,2008. It will take approximately 36 to 40 hours to bring the kiln to temperature. The plant will then slowly begin the feed process with the new iron ore formulation. If there are no delays in this process, the plant should be up to full speed and stable by Wednesday, December 12, 2008. CEMEX will continue the kiln operation until December 18, 2008, then bring the kiln back down and again await the air monitor sampling results. The County’s consultants will conduct air monitoring for five days, at their five locations, during this period and the Air District will continue its daily monitoring at the school. The plant will shut down again on December 18fh for the holidays and will not resume operations until after the New Year.

There is a Town Meeting scheduled for Tuesday, January 6, 2009, at the Pacific Elementary School. It is expected that the results from the air monitoring (Phase Ill) conducted during the kiln operation will be back from the data validation group and posted on the County’s website before the town meeting. Cemex has agreed to wait until January 7, 2009 to resume full operation of the plant, assuming the air monitoring results from the final phase of this investigation a re favorable.

Communication with the Community

County Environmental Health and Public Health personnel have continued to maintain close coordination with officials at Pacific Elementary School. The county has maintained a website to provide the most recent information and provide a clearinghouse for inquiries for additional information relevant to health risk form chromium VI. At your Board’s direction, EHS has made our staff and consultants available to the Davenport Environmental Health Coalition as yet another means to ensure the community’s needs are met. Also as a result of your Board’s direction, staff have begun posting narratives on the website explaining how the data was collected, on which days, and any other information important to understanding the results.

Conclusions

This report is based on the data that was available as of December 4? 2008. It is expected that by staff’s next report back, the last of the air monitoring data (Phase Ill) will have been collected by the County’s contractor, the data will have been validated, and their final report completed. Additionally, the Air District will have set the new air quality standard for the plant and their ongoing air-monitoring program will be in place.

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Air Quality Issues in the Town of Davenport Agenda Date: December 16,2008 Page 4 of 4

Recommendation

It is, therefore, RECOMMENDED that your Board:

1. Accept and file this report on air quality health impacts in Davenport; and,

2. Direct the Health Services Agency to report back with further information on this situation by January 27,2009.

Since rely ,

Rama Khalsa, Ph.D. Health Services Agency Director

RECOMMENDED:

Susan A. Mauriello County Administrative Officer

Attach men t

cc: County Administrative Office County Counsel H SA Ad ministration Monterey Bay Unified Air Pollution Control District

Attachment 1 0 3 9 7

Environmental and Occupational Risk Management"

December 9,2008

The Fehling Group, LLC 1275 4'h street, Suite 293 Santa Rosa, CA 95404

4 North 2nd Street, Suite 1270 San Jose, CA 95113

408.790.9200 (fax) 408.213.0944

www.eorm .corn

Re: Hexavalent Chromium Surface Wipe Sampling at Pacific Elementary School, Davenport, CA - EORM@ Project No. FEHLOOOl

Dear Mr. Kurt Fehling:

Pursuant to your request, Environmental and Occupational Risk Management, Inc. (EORM@) performed surface wipe sampling for hexavalent chromium at the Pacific Elementary School located at 50 Ocean Street in Davenport, California. Sampling was also performed at two control sites, the Bonny Doon Union Elementary School located at 1492 Pine Flat Road in Bonny Doon, and California-Polytechnic State University's Casa Verde Farm (hereby Cal Poly) located at 125 Swanton Road, in Santa Cruz County, California. This sampling was requested in response to ongoing concerns of parents of students andor school officials regarding potential hexavalent chromium accumulation on contact surfaces possibly emanating from a local point source emitter. The purpose of this sampling was to acquire data to assess the presence of hexavalent chromium on surfaces accessible to school children and staff at the school. Mr. Tom Dietrich, Associate EHS Consultant and Mr. Marin Hanzek, EHS Specialist with EORM conducted the on-site sampling on November 6 and 7, 2008. Mr. Xavier Alcaraz, Certified Industrial Hygienist and Principal Consultant with EORM provided technical oversight, project management, and review of this report. This report describes project background, methodology, and results.

Project Summary

EORM collected a total of fifty (50) surface wipe samples for hexavalent chromium from various indoor and outdoor surfaces at Pacific Elementary School. Two control site locations were identified for similar sampling to obtain hexavalent chromium surface sampling data for comparison purposes. EORM collected three (3) indoor surface wipe samples at the Cal-Poly control site and fifteen (15) surface wipe samples at the Bonny Doon Union Elementary School control site. Samples were collected from surfaces where routine direct contact by school children was expected in regularly occupied areas such as tables and desks, computer workstations, play areas, bookshelves, storage areas, chairs, etc. in classrooms, lunchrooms, libraries, offices, and multipurpose rooms.

Currently, there are no established federal, state or local regulatory standards to assess surface contamination or surface clean-up levels for hexavalent chromium. Therefore, EORM utilized benchmaruscreening goal values drafted by the California Department of Toxics Substances Control and the United States Environmental Protection Agency for comparison with the sample results generated from this project.

EORM Project No. EHLOOOl/ FEHL0001 Fehling Group Cr6 Wipe Sampling

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The Fehling Group, LLC Page 2

The concentration range of indoor hexavalent chromium levels on surfaces sampled at Pacific Elementary School were generally similar to those measured at the two control sites. Outdoor surface sample levels at Pacific Elementary School were generally lower than indoor surface sample levels. All surface sample concentrations at the three sites tested had hexavalent chromium concentrations that were notably lower than the benchmarks or screening goals used for comparison.

Background

Chromium is a naturally occurring element found in soil, geologic formations, etc. The trivalent state of chromium (chromium 111) is most stable and most likely to occur naturally. This form of chromium is an essential micronutrient to humans and animals. Hexavalent chromium (chromium VI) is a relatively unstable form of chromium, and rarely occurs naturally. Hexavalent chromium is usually produced from anthropogenic sources and used in various industries. Sources of chromium in ambient air may occur from natural sources, burning of fossil fuels and wood, as well as industrial and manufacturing operations. Cement producing plants, ore refining, chemical processing, chrome pigment use and related manufacturing processes, and automobile brake lining and catalytic converters from vehicles are a few of the industrial operations that contribute to the atmospheric burden of chromium. Many scientific studies have focused on the human health effects of hexavalent - chromium exposure, and there are established regulatory limits for environmental and occupational exposure to airborne hexavalent chromium. Currently, there are no established environmental or occupational regulatory standards for surface contamination or surface clean-up levels for hexavalent chromium. However, several studies/documents have been published that provide guidelines that may be considered for use as benchmark surface levels for hexavalent chromium.

Recently, concerns about the possible presence of hexavalent chromium among community members (i,e., residents, parents of local school children, school employees etc.) in Davenport, California, have increased. Concerns have primarily been centered around the proximity of Cemex, a Portland cement plant located north of Davenport, less than one mile from the town center (upwind on most days). Pacific Elementary School is located in the center of town.

The surface-wipe sampling results provided in this report are only one component of a larger study to assess hexavalent chromium exposures in response to community concerns. EORM was retained by The Fehling Group, LLC, at the request of the County of Santa Cruz - Environmental Health Services to conduct surface-wipe sampling for hexavalent chromium at the Pacific Elementary School and at two additional similar control locations, and present the data. EORM’s scope of work did not include assessing exposure risk, assessing potential health hazards, or providing any recommendations based on the sampling results.

Sample Location Selection

The primary sampling location, Pacific Elementary School is located in the small coastal community of Davenport, on a bluff, several hundred feet from the property line of Cemex. The Fehling Group provided EORM with the control site locations, the Bonny Doon Union Elementary School and Cal- Poly - Casa Verde Farm. The Bonny Doon Union Elementary School is situated approximately 6 miles north-east of Davenport, within a forested area in the Santa Cruz mountains. The second control site, Cal-Poly is located a few miles north of Davenport, in a low lying rural agricultural valley approximately 1 mile from the coast. The control locations were selected as these sites are not directly downwind of the Cemex facility, and they are not expected to receive significant fall-out from Cemex industrial operations.

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EORM Project No. FEHL0001 / FEHL0001 Fehling Group Cr6 Wipe Sampling fl f

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Selection of sampling locations was based on types of surfaces where routine direct contact by school children was expected in regularly occupied areas. With this objective, indoor surface sample selection included both “visibly clean” and “visibly dirty” horizontal surfaces that could be contacted frequently including tables and desks, computer workstations, play areas, bookshelves, storage areas, chairs, etc. in classrooms, lunchrooms, libraries, offices, and multipurpose rooms.

Outdoor surfaces selected for sampling included assorted playground equipment in the main and pre- school playgrounds, tables, and railings. Sample locations are further described in the results Tables 2, 3, and 4 in Attachment 1. Maps of sampling locations are included in Attachment 5. Digital photographs of all sample locations were provided on a compact disk, referenced as Attachment 6. All efforts were made to limit the disruption to ongoing daily school activities and student learning during collection of samples.

Sample Collection

On November 6,2008, EORM collected forty (40) surface wipe samples for hexavalent chromium from various indoor surfaces at Pacific Elementary School. Ten (10) surface wipe samples were collected from various outdoor surfaces in the fenced yard area at Pacific Elementary School. On the same day, EORM traveled to the Cal-Poly control site and collected three (3) indoor surface wipe samples.

On November 7,2008, EORM collected ten (10) surface wipe samples for hexavalent chromium from various indoor locations at the Bonny Doon Union Elementary School control site. Five ( 5 ) surface wipe samples were also collected from various outdoor playground surfaces.

In addition to the wipe samples, EORM collected two (2) solution blank samples, five ( 5 ) wipe filter blank samples, and one (1) template blank sample for quality control purposes. The “solution” blanks consisted of an aliquot of the stabilizing solution (described further in the following section) with no filter. The wipe filter blanks consisted of a filter handled and treated in the same manner as the actual samples, but not used for wiping of a surface. The “template” blank sample consisted of a filter handled and treated in the same manner as the actual samples, and used for wiping of an unused template surface.

Blank samples at Pacific Elementary School were collected at different periods throughout the day. The quality control field blank samples collected compromised approximately 10% of the total number of samples collected. Unused wipe sample media from the same lot of filters were submitted to the laboratory for preparation of laboratory blanks.

Surface Sampling Methodology and Analysis

Surface wipe samples were collected in accordance with the Occupational Safety and Health Administration (OSHA) W4001 Method for Hexavalent Chromium. Each wipe sample area was isolated by placing a clean 10 cm by 10 cm (100 cm2) plastic template over the test surface. Each sample was collected using firm hand pressure to move the 37-mm diameter binderless quartz fiber filter (0.45 mm thickness) over the designated surface. Each filter was wiped over the area beginning at the outside edge and progressing toward the center making concentric squares of decreasing size. The filter was then folded with the contaminant side inward and the wiping was repeated in the opposite direction. Clean gloves and templates were used for each sample to prevent cross contamination.

EORM Project No. FEHL0001 / FEHL0001 Fehling Group Cr6 Wipe Sa c

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The samples were moistened (saturated) with an aqueous solution containing 10% Na2C03 with 2% NaHC03 immediately after sampling to eliminate the possible interference from acid, placed in sealed viles provided by the analytical laboratory, labeled, and submitted for analysis. DataChem Laboratories, Inc. of Cincinnati Ohio, an independent, AIHA-accredited laboratory prepared and analyzed the samples by a modified Occupational Safety and Health (OSHA) W4001 Analytical Method using an ion chromatograph equipped with postcolumn analytical derivatization and an ultraviolet light detector. The laboratory analytical reports are provided in Attachment 2.

0 bservations

Weather conditions were sunny with a calm wind, relatively warm, and good air quality and visibility was observed during both days of sampling. However, a significant weather event accompanied by heavy rains occurred a few days prior to sampling, possibly affecting settled dust levels on outdoor surfaces of interest.

According to Pacific Elementary school administrative staff, custodial activities are performed nightly including cursory vacuuming, trash collection, and sweeping of all hard floors (approximately 3.5 hours per night). The custodial staff clean 15-20 minutes per room. On Fridays, the custodial staff conducts a thorough vacuuming of the entire school including the pre-school room and two portable classroom units. Teachers and teacher’s aids are responsible for surface cleaning for their respective classrooms, and reportedly use disinfectant wipes for the cleaning. Window cleaning is contracted and performed three times during the year including summer.

Pacific Elementary School’s main building does not have mechanical air conditioning. Open window vents (small horizontal inlet vents) located directly under each window and open doors supply school rooms with fresh air. Heating is supplied through ceiling supply and return ducting connected to the heating units located on the roof. Preventative maintenance for the forced heating systems was last performed on August 8, 2008. The two portable classroom units have wall-mounted heating, ventilation and air conditioning (HVAC) units. The south portable classroom also known as the ‘Rec Room’ is equipped with a recently installed HVAC unit.

The Bonny Doon Union Elementary School utilizes open doors and windows to supply rooms with fresh air. The library has two wall-mounted fans to move air around the large room. Heating is supplied by roof-mounted heating units with ceiling supply and return registers.

Cal-Poly utilizes forced air heating from a furnace with wall registers mounted near the ceiling. Windows and doors are opened to supply fresh air. This facility is a converted farm house with hard wood floors and hand-painted walls, ceilings and trim.

Regulatory Standards and Studies

Currently, there are no established federal, state or local regulatory standards to assess surface contamination or surface clean-up levels for hexavalent chromium. Therefore, EORM researched other sources and studies for guidance and comparison with the datahesults obtained from this project.

The California Department of Toxics Substances Control (DTSC) under the California Environmental Protection Agency (Cal-EPA) published a document, Human Health Risk Evaluation of Structural Surfaces Contaminated with Metals, on March 13,2003 (Cal-EPA 2003) that provided quantitative guidance on industrial surface clean-up level determination for various contaminants including hexavalent chromium. The DTSC derived surface screening goals based on human health risk

EORM Project No. FEHL0001/ FEHL0001 Fehling Group Cr6 Wipe Sampling

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c

assessments for contact with contaminated surfaces of buildings and other structures. The chemical- specific goals were developed specifically for the facilities outlined in the document, and there were areas of uncertainties in human exposure assessment for contaminants on surfaces such as wipe sample result efficiencies, skin surface area for contact and transfer efficiency. DTSC determined separate surface screening goals for a child and for an adult worker. A summary of the health “hazard-based screening goal” for hexavalent chromium established for worker and child populations, as determined by DTSC is provided in Table 1.

The United States Environmental Protection Agency’s Contaminants of Potential Concern (COPC) Committee of the World Trade Center (WTC) Indoor Air Task Force Working Group established health-based benchmarks in settled dust for selected metals including chromium. These were established to develop benchmark criteria which supported the efforts to safely clean up residential environments in Lower Manhattan following the September 11,2001 World Trade Center collapse. A systematic risk-based approach was used by the COPC Committee to select the contaminants and derive the health-based benchmark levels in their report published in May 2003 (US-EPA 2003). The COPC selection process included a review of the large sample data set, additional screening which considered individual chemical toxicity, the prevalence of a chemical within and across media, and the likelihood that a particular chemical was related to the World Trade Center collapse. The health- based benchmark level for total chromium established by the COPC is provided in Table 1.

On March 12,2008, the United States Environmental Protection Agency’s Office of Prevention, Pesticides and Toxic Substances published a document, Hazard Identification and Toxicology Endpoint Selection for Inorganic Arsenic and Inorganic Chromium (US-EPA 2008). This publication addresses common natural and industrial sources of hexavalent chromium, its potential presence in air, water and soil, as well as acute and chronic toxicological concerns, including carcinogenity. This publication also discusses the differences in concern levels between trivalent chromium and hexavalent chromium. Greater concern levels are expressed for hexavalent chromium. This document also cites various toxicology studies and scientific literature for further reference. Additionally, the document lists a Concentration of Concern for Dermal Sensitization (CCDS) level, which is presented in Table 1. The published CCDS value, as recommended by the Human Studies Review Board (HSRB), is a “level of dermal exposure at which elicitation of allergic contact dermatitis is not expected to occur from repeated dermal contact”.

Table 1: Summary of Health Based Benchmarks and Screening Goals for Hexavalent and Trivalent Chromi urn CA DTSC Surface CA DTSC Surface U.S. EPA U.S. EPA WTC Screening Goal Screening Goal Concentration of Health- based (adult worker) (child) Concern for Dermal Benchmark

(cls/100 cm2) Sensitization (~CJ/IOO cm2)

(l.l9/100 cm2) tl.ls/lOO cm2)

600 (Cr VI) 7.5 (Cr VI) 9.2 (Cr VI) 47” (Cr In) *U.S. EPA WTC Benchmark does not differentiate between hexavalent chromium (Cr VI) and other forms of chromium (Le., Cr III).

Results and Discussion

Results of hexavalent chromium surface wipe sampling for all locations considered in this study and field blank samples are provided in Tables 2, 3, and 4 in Attachment 1. Tables 2, 3, and 4 also list the health-based benchmarks and screening goals cited in Table 1 for comparison. The laboratory analytical reports are provided in Attachment 2 and chain of custodies are provided in Attachment 3. The field sampling data sheets are provided in Attachment 4.

EORM Project No. FEHL0001 / FEHL0001 Fehling Group Cr6 Wipe Sam

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The surface sampling results from Pacific Elementary School in Davenport show hexavalent chromium levels notably lower than all benchmarkhcreening goal values listed. Measured surface concentrations ranged from less than the analytical detection limit of 0.05 pgi100 cm2 to 0.12 pg/lOO cm2. Of the 50 samples collected at Pacific Elementary School, 33 (66%) were below the limit of detection. Of the 40 indoor samples collected at Pacific Elementary School, 16 (40%) were above the detection limit. The indoor areas with the highest concentrations (0.12 pg/lOO cm2) include samples from portable classroom #I - bookshelf, portable classroom #2 - bookshelf and supply storage shelf, and in the grades 3-4 classroom - storage shelf. Only 2 outdoor surface samples at Pacific Elementary School were slightly above the limit of detection (0.05 pg/lOO cm2 and 0.06 pg/lOO cm2), while the remaining 10 outdoor samples were below the limit of detection.

Sample results at the Bonny Doon Union Elementary School control site showed hexavalent chromium levels notably lower than all benchmarklscreening goal values listed. Values ranged from 0.07 pg/lOO cm2 to 0.12 pg/lOO cm2. All indoor and outdoor surface samples were above the limit of detection. The indoor surface with the highest concentration (0.12 pg/lOO cm2) was the bookshelf in the library. Highest concentration (0.12 pg/lOO cm2) for the outdoor area was measured on the bridge walkway of the playground. Both indoor and outdoor areas showed similar surface concentration 1 evels.

Sample results for the Cal-Poly control site showed hexavalent chromium levels lower than all benchmarkhcreening goal values listed. Only one location was found to be above the limit of detection (0.1 1 yg/lOO cm2). This sample was collected from a computer work surface in the meeting room.

Additionally, all field blank samples collected at the Pacific Elementary School and Cal-Poly control site were below the limit of detection. The field blank filter sample and template filter blank sample for the Bonny Doon Union Elementary School showed a level of 0.09 pg/lOO cm2. However, the solution blank for this location was below the limit of detection. DataChem Laboratories communicated that they have observed similar presence of background hexavalent chromium on select blank samples. The presence of this background hexavalent chromium is generally considered random and not predictable, even between the same production lot of filters. It is presumed that the source of the chromium is from the stainless steel dies used in the production process of the filters. DataChem has also communicated that OSHA’s Salt Lake City Laboratory has observed the same phenomena. As such, the sample results from the Bonny Doon School are presented as actual measured and field blank corrected both in Table 3 (Attachment 1) and the laboratory report (Attachment 2). Application of a field blank correction factor of 0.09 pg/lOO cm2 renders all of the sample results for the Bonny Doon School to be less than the analytical detection limit.

In summary, the concentration range of indoor hexavalent chromium levels on sampled surfaces at Pacific Elementary School were generally similar to those measured at the two control sites. Outdoor surface sample levels at Pacific Elementary School were generally lower than indoor surface sample levels. All surface sample concentrations at the three sites tested had hexavalent chromium concentrations that were notably lower than the benchmarks or screening goals referenced in this report.

EORM Project No. FEHL0001 / FEHL0001 hhling Group Cr6 Wipe Sampling

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The Fehling Group, U C Page 7

EORM appreciates the opportunity to have performed this work for the The Fehling Group. Please feel free to call us at (408) 790-9200 with any questions regarding this report or if we can further assist you on this matter.

Regards, Reviewed by:

Tom Dietrich Associate EHS Consultant

Attachments

References:

1.

2.

3.

Xavier Alcaraz, MSPH, CIH Principal Consultant

Cal-EPA/DTSC 2003. Human Health Risk Evaluation of Structural Surfaces Contaminated with Metals. Karen Di Biasio and Kimiko Klein, Human and Ecological Risk Division, March 13, 2003. http://www.dtsc.ca.~ov/AssessinpRisk/upload/Eval-Metal-Contaminated- Surfaces. pdf d

US-EPA, 2003. World Trade Center Indoor Environmental Assessment: Selecting Contaminants of Potential Concern and Setting Health-Based Benchmarks. Prepared by the Contaminants of Potential Concern (COPC) Committee of the World Trade Center Indoor Air Task Force Working Group, May 2003. htt_p://www.tera.org/peer/WTC/COPC%20- % 20B enc hmark% 20Report%20wi th% 20appendi ces . pd f

US-EPA, 2008. Hazard Identification and Toxicology Endpoint Selection for Inorganic Arsenic and Inorganic Chromium. Prepared by Jonathan Chen, Ph.D. and Timothy F. McMahon, Ph.D., Risk Assessment and Science Support Branch (RASSB) Antimicrobial Division. May 12, 2008. http://www .google.com/search?hl=en&q=US+EPA+Hazard+Identification+and+Toxicology +Endpoint+Selection+for+Inorganic+Arsenic+and+inorganic+chromium+2OO8

EORM Project No. FEHLOOOl/ FEHLOOOl Fehling Group Cr6 Wipe Sampling

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The Fehling Group, LLC Attachment 1

Attachment I Surface Sampling Results Tables 2,3,4

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Attachment 2

Analytical Laboratory Results

EORM Project No. FEHL0001 / FEHLOOOl Fehling Group Cr6 Wipe Sampling

0 4 2 2

TEST REPORT Page 1 of 5

11/14/08

Submitted To: Xavier Alcaraz EQRM 4 North Second St.l S u i t e 1270 San Jose , CA 95113

Reference Data: Sample Location: Sample T y p e : Client Sample No,:- PQ # : Method Reference: Sample Set ID#: DATACHEM Lab No.: Sample Receipt Date: Prepara t ion Date: Analysis Date:

Hexavalent Chxomium Pacific Elementary School

P E W - 0 t h r o u g h CPBlank-J, Fehling Group OSHA W4001 Mad. 08-2- 62 58 08-35052 through 08-35109 1 1 / 0 8 / 0 8 11 /08 /08 11/10 through 1 1 / 1 2 / 0 8

Wipe

Sample condition was acceptable upon receipt except w h e r e noted. T h e samples were prepared in accordance with OSHA method ID215

ver.2 Mod. The samples were then analyzed on Dionex 4500 IC equipped w i t h UV detectox:, Post column derivatization, and a AS7 column. T h e e l u e n t used was 25QmM (NH4)2S04/100mM NM&H in water.

Compound i d e n t i f i c a t i o n is based upon retention time matching only. Any compound w i t h a similar r e t e n t i o n time w i l l i n t e r f e r e .

T h e r e s u l t s a r e provided in t h e enclosed da ta t a b l e . R e s u l t s r e l a t e o n l y t o the items tested and a r e not b l a n k corrected e x c e p t when clearly i n d i c a t e d . ‘

T h i s report s h a l l not be reproduced except i n f u l l , w i t h o u t t h e written approval of t h e Laboratory.

T r e n t Rack A n a l y s t

WEST COAST OFFtCE 11 SANTA YORMA COURT NOVATO, CALIFORNIA 94945 ao0280-807i. FAX 41s e g s ~ 6 ~

ClNClNNATf OFFICE 4388 GLENDALE-MILFORD ROAD CINCINNATI, OHiO 4524247ofi 513 733-5336. FAX SI3 733-5347

0 4 2 3

Client # DCL #


08-L-62 5 8

Sample Area pLg/S=@e (a2>

R e s u l t s Hexavalent Chromium

PE06-0 PE07-0 PE08-0 PE09-0 PEIO-I PEl1-1 PEl.2-0 PE13-I

08-35057 1 100 N D

- 08- 35059 100 ; . 0 6 08- 35060 100 I 1\1 D 08-35061 I IQO N D - 08-35063 I 100 ND

I 100 ND

08- 35058 100 N D c

I

08-35062 300 ND

08-35064

Trent Rack Analyst

PE14-I 08-35065 PE15-I: 08-35064 PE16-X 08- 35067 P E 1 7 - I 08- 35068

PE19-1 08-35070 PE20-I 08-35071 P E 2 1 - I 08-35072 PE22-1 08-35073 PE23-3: 08-35074 PE24- I 08-35075 PE25-I 08- 35076 PE2 6- I 08-35077

-.... .. P E 1 8 - I 08- 35069

_.-

EQL

Rbviewer

3-00 ND

1 0 0 ND 100 ND

100 ND 100 ND

100 .08

100 I .09

100 I .05

ZOO 1 .05

1 0 0 I ND I 100 I ND

100 I .12

-~. ~ .

100 ND

. 0 5

0 4 2 4

r

Client #; DCL # Sample Area pg/s=ple (a2)

PE27-I 08- 35078 100 ND PE28- I 08- 35079 100 07 PE29-J: 08- 35080 100 ND PE30-I 08- 35081 L O O ND P E 3 1 - I 08- 35082 100 . 0 7 PE32-I: 0 6 - 3 5 0 8 3 100 .05 PE33-I 08-35084 100 N D

TEST REPORT

08-L-6258 Page 3 of 5

P E 3 4 - 1 PE35-1 PE36-I PE37 -3: ~ ~ 3 8 - 1 PE39-1 PE~O-1: PE41-I PE42-I P E 4 3 - I PE44-I PE45-I P E 4 6 - I PE47-I P E 4 8 - I PE4 9- 1 PE50-1

PE B l a n k 4

i

Results Hexavalent C h r o m i u m

08- 35085 IO0 ND 08-35086 100 .05 08- 35087 100 N D 08-35088 100 ND

ND 0 8 - 3 5 0 9 1 100 ND

08-35093 100 N D I_ 08- 35094 100 ND

08-35095 LOO N D 08- 35096 100 .12 08- 35097 T O O .12 08-35098 100 .10 08- 35099 100 .07 08-35100 1 0 0 111 08- 35101 100 .12 08- 35102 0. ND

08- 35089 100 1 ND 08- 35090 100 1 08- 35092 100 1 .06

~~ - -

_c-

PE B l a n k- 2 08- 35103 0. ND EQL .05

N D i n d i c a t e s n o t detected a t or above t h e estimated q u a n t i t a t i o n limit (EQL).

- .

~~ ~ ~~ ~

T r e n t Rack Analyst

fh. viewer

0 4 2 5

t ' .

I p d S n m p l e C l i e n t # DCL # Sample Area (-9

PE Blank- 3 08-35104 1 0 . N D PE S o l u t i o n 08-35105 0. ND

B l a n k - 1 \ - 1

CPOl 08-35106 100 I ND ."". CPO2 08-35207 IO0 ND - I

-. I

CP03 08-35108 100" 4 3.1 CPBlank-1 08-35109 100 ND

L a b B l a n k l* I 0 . .lO 1 Lab B l a n k 2* 0. 12

L a b B l a n k 3* 0. .09 EQL \ . 05

i i

TEST REPORT

08-L- 62 5 8 Page 4 of 5

Results Hexavalent Chromium


#e v i ewe r

0 4 2 6

DCL # MED Q C l * MED QC2* MED QC3* MED QC4* MED QCS* MED QC6*

TEST REPORT

08-L- 6258 Page 5 of 5

% recovery 85. 97 .

92 P

92. 106

101 a"..,

QC results Hexavalent C h r o m i m

NOTE: Lab B l a n k and QC's wexe prepared an t h e same lot of wipe media as field samples.

T r e n t R a c k Analyst

0 4 2 7


11/14/08

Submit ted To: Xavier Alcarez EORM 4 N o r t h Second , S u i t e 1 2 7 0 San Jose, CA 95113

Reference Data: Sample Location: Sample Type: C l i e n t Sample No. : PO {I: Method Reference: Sample S e t ID#: DATACHEM Lab No. : Sample Receipt Date : P r e p a r a t i o n Date: Analysis Date:

Hexavalent Chromium Bonny Doon E l e m e n t a r y School PVC ,F i l t e r BDE01-0 t h r o u g h BDETemplate Blank-1 F e h l i n g Group OSHA W40Q1. Mod. 08-L-62 65 08-35169 t h r o u g h 08- 35186 11/10 /08 11/10/03 11/33/03

Sample condition was acceptable upon receipt except where noted. The samples were prepared in accordance with OSHA method W4001

Mod. The samples were t h e n a n a l y z e d on D i o n e x 4 5 0 0 IC equipped w i t h U V detector , Pos t column derivatizalion, and a AS7 column. The e l u e n t used was 250mM (NH4)2SO~/100mM NH4OH i n water.

Compound identification is based upon retention time matching o n l y . Any compound w i t h a similar retention time will in ter€ere .

The results a r e provided i n t h e e n c l o s e d da t a t a b l e , Results r e l a t e o n l y to t h e items tested and a r e not b l a n k corrected e x c e p t when c l e a r l y i nd i ca t ed .

T h i s report shall not be reproduced except in f u l l , w i t h o u t the w r i t t e n approval of t h e l a b o r a t o r y ,


CINCINNATI OFFICE 4388 GLENDAI-E-MILFORD ROAD CINCINNATI. O H 0 45242-3706 513 733-5336, FAX 573 733-5347

Aevi e wer

WEST COAST OFFICE 11 SANTA YORMA COURT NOVATO. CALIFORNIA 94945 800 280-8071 FA% 415 893-9469

0 4 2 8

Client # DCL #

BDEO1-0 08-35269 BDE02-U 08-35170 BDEO 3-0 08-35171 BDE04-0 08-35172 BPEOS-0 08-35173 RDEO6-1 08-35174 BDE07-I 08- 35175 BDEOB-1 08- 35176 BDE09-I: 08- 35177

-...

TEST REPORT Page 2 o f 3

08-L-62 65

- Sample A r e a p9 / Sample

(a2) 100 I .12

100 I .08

200 1 .09

100 I .09 100 f .IO

100 .IO

100 .08 100 .09

100 .12


BDE10-I BDE11-I BDEl.2-3 BDE13-I BDEl.4-I BDE15-I

BDE B l a n k- 1 BDESolution

B l a n k- 1

B l a n k 4

- . . . .

BDETemplate

ND i n d i c a t e s not

08-35178 100 .10

08-35180 1 0 0 .13 08-35181 100 .07 08-35282 100 .09

I ”. 08-35179 100 I .08

- -. 08-35183 i 100 I .10 08- 35184 1 0 . 09 08- 35185 0 . N D

08-3518 6 0. .Q9 ,

1 Lab B l a n k * I 0 . .13

EQL . 05 “. 1 detected at or above the e s t i m a t e d quantitation

T r e n t R a c k Analyst

0 4 2 9

% recovery DCL # MED QC7* 107

I_- - MED QC8* 103

TEST REPORT Page 3 of 3 08-L-62 65

QC results Hexavalent Chromium

NOTE: Lab Blank and QC’s wexe prepared on the same l o t o f wipe media as f i e l d samples.

?a&&- Trent Rack A n a l y s t

0 4 3 0

P

DA TA CH€M UBORATORIES, INC.

TEST REPORT Page 1 o f 3

12/1/08

Submitted T o : Xavier A l c a r e z EORM 4 N o r t h Second , S u i t e 1 2 7 0 San Jose, CA 95113

R e f e r e n c e Data: Sample L o c a t i o n : Sample Type: C l i e n t Sample No.: PO H: Method R e f e r e n c e : Sample S e t In#: DATACHEM L a b N o . : Sample Receipt Date: P r e p a r a t i o n Date: A n a l y s i s Date:

Hexavalent Chromium Bonny Doon K k m e n t a r y School Q u a r t z F i b e r F i l t e r s BDEO1-0 t h r o u g h BDETemplate B lank- 1 F e h l i n g Group OSHA W4001 Mod. 08-L-6265 08- 35169 t h r o u g h 08-35186 11/10/08 11/10/08 11/13/08

Sample c o n d i - t i o n was accep tab le upon r e c e i p t except where n o t e d . The s a m p l e s were p r e p a r e d i n accordance w i t h OSHA method W4001

Mod. The samples were t h e n a n a l y z e d on Dionex 4 5 0 0 I C e q u i p p e d w i t h UV d e t e c t o r , Pos t co lumn d e r i v a t i z a t i o n , and a AS7 column. The e l u e n t u s e d was 250mM (NH4)2S04/100mM NH4Oi-I i n wa te r .

Compound i d e n t i f i c a t i o n i s based upon r e t e n t i o n t i m e matching o n l y . Any compound with a similar r e t e n t i o n t i m e w i l l i n t e r f e r e .

The r e s u l t s a r e provided i n t h e e n c l o s e d data table. Results relate o n l y t o t h e i t e m s t e s t ed a n d a r e n o t b l a n k c o r r e c t e d e x c e p t when c l e a r l y i n d i c a t e d .

T h i s r e p o r t shall n o t be r e p r o d u c e d e x c e p t i n full, w i t h o u t t h e w r i t t e n approval of t h e l a b o r a t o r y .

T r e n t Rack A n a l y s t

CINCINNATI OFFICE 4388 GLENDALE-MILFORD ROAD CINCINNATI, OHIO 45242-3706 51 3 733-5336, FAX 51 3 733-5347

WEST COAST OFFICE 11 SANTA YORMA COURT NOVATO, CALIFORNIA 94945 800 280-8071, FAX 415 893-9469

0 4 3 1

Client # DCL # Sample A r e a ( an2 )

BDEO1-0 08-35169 100 BDE02-0 08-35170 100 BDEO3-0 08-35171 100 BDEO4-0 08-35172 100 BDE05-0 08-35173 100 BDEOG-I 08-35174 100 BDE07-I 08-35175 100 BDE08-I 08-35176 100 BDE09-I 08-35177 100 BDE10-I 08-35178 130 BDE11-I 08-35179 100 BDE12 - I 08-35180 100 BDEi 3-1 08-35181 100 BDE14-I 08-35182 100 BDE15-I 08-35183 100

BDE B l a n k- 7 08-35184 0 . BDESoiution 08-35185 0.

BDETemplaLe 08-35186 0.

Lab B l a n k * 0 .

Blank-1

Blank-1

EQL ND indicates riot detected at or above the

TEST REPORT Page 2 of 3 08-L-6265

pg/Sample pg/Smple Blank

Corrected .12 ND .10 ND -08 ND .08 ND .09 ND .09 NU .12 ND .09 ND .10 ND .10 ND .08 ND .11 ND - 0 7 ND .09 ND .10 ND .09 ND ND ND

.09 ND

.13 ND

. 0 5 estimated quantitation



0 4 3 2

M E D QC7* MED QCS*

TEST REPORT

107 103

Page 3 of 3 08-L-62 65

QC results Hexavalent Chromium

DCL # I % recovery I

NOTE: Lab B l a n k and QC's were prepared on the same lol; of wipe media as f i e l d samples.

Tkent Rack Analyst

n o

0 4 3 3


Attachment 3 Chain of Custody (COC) Forms

EORM Project No. FEHL0001/ FEHLOOOl Fehling Group Cr6 Wipe Sampling

0 4 3 4

-4

RUSH Status Required - ADDITIONAL CHARGE

ANALYTICAL REQUEST FORM REGULAR Status (5 worklng days from receipt)

7

LABORA'IDRfES, INC, v I DATE

RESULTS REQUIRED BY

I CONTACT DATACHEM LABS PRIOR TO SENDING SAMPLES

4388 Glendale Milford Road I Cincinnati, OH 45242 800-458-1493 or 513-733-5336 1 Fax: 513-733-5347 9

DISTRIBUTION: WHITE - LABORATORY COPY CANARY - CUSTOMER COPY

0 4 3 5

DATA LALtORATORIES, INC,

2 \ ANALYTfCAL REQUEST FORM REGULAR Status (5 working days from receipt)


DATE RESULTS REQUIRED BY

CONTACT DATACHEM LABS PRIOR TO SENDING SAMPLES

STELM HANIS Date i!/qo!? Purchase Order No u* GmclP Quote No. Project Manager

4388 Glendale Milford Road I Cinclnnati, OH 45242 800-458-1493 or 513-733.5336 I Fax: 513-733-5347


0 4 3 6

DA TA cHEM I RUSH Status Required - ADDIT10NAL CHARGE LAE30RATdRlES, INC.

ANALYTICAL. REQUEST FORM REGULAR Status (5 worktng days from receipt)

I I



Billing Address (if different from above) QC Requirements 0 Standard c) Olher .... .

S A M E A , Po

REQUEST FOR ANALYSES

ANALYSES REQUESTED - Use Method Number if Known Laboratory Client Sample Media S a m p l M 0% - use Only Number Type' (Liters)

3 5070

3SQ.8 1

3 s w 3 3 5 0 8 Y 3 S a $ 5

3Sa%7

CHAIN OF CUSTODY /I

--- - z .{i rri

._

4388 Glendale Milford Road I Cincinnati, OH 45242 800-458-1493 or 513-733-5336 I Fax: 51 3-733-5347


0 4 3 7

Dale /Time Date Time Received by:

Dale I Tme

(signa'urQ) > kl-jAJ& Relinquished by: Dale I l ime ReceivcTby:

I

DA TA C H € i LABORATORIES, INC,

ANALYTICAL REQUEST FORM ,@!+?EGULAR Status (5 working days from receipt)


DATE REStJLTS REQUIRED BY


4388 Glendale Milford Road I Cincinnati, OH 45242 * 800-458-1493 or 513-733-5336 I Fax: 513-733-5347


0438

0 RlJSf-! Status Required - ADDITIONAL CHARGE -&- LABORATORIES, INC. -

Dale I Time Recelved by: Dare I Time

Date I Tlme Relinqulshed by:

ANALYTICAL REQUEST FORM 3 @REGULAR Status (5 working days from receipt)

i

CONTACT DATAGHEM LABS PRIOR TO SENDING SAMPLES

=LA HANlS ~

Dale &&&!!?6khase Order No FEHU.Ub &&G? QuofeNo. Project Manager

IS3w Glendale Mllford Raad I Cincinnetl, OH 45242 . 800-458-1493 or 513-733-5336 I Fax: 513-733-5347


0 4 3 9

LABORATORIES, INC.



Telephone ( '10 r) 77 Lo 1- 7 2 , 6 Fax Telephone ( ) =

Bilting Address (if different from above)

Time Collected

QC Requirements

4388 Glendale Milford Road I Cincfnnatl, OH 45242 800-458-2493 or 51 3-733-5336 ! Fax: 51 3-733-5347

DISTRIBUTION: WHITE - LABORATORY COPY CANARY - CUSTOMER COPY c

0 4 4 0

Rebquished by: Dale I Time Remlvod by: (Slgnatute)

-s

ANALYTICAL REQUEST FORM

[ REGULAR Status (5 working days from receipt)

Dale I Time

Date I Time

I

I 1 L-l RUSH Status Requlred - ADDITIONAL CMARGE . INC. RESULTS REQUlRED BY

CONTACT DATACHEM U B S PRIOR TO SENDING SAMPLES DATE

0 4 4 1


Attachment 4

Field Sampling Data Sheets


0 4 4 2

.~. - . - .~ .. . . . .. . . . . I . ....... -. . ... , _._.. ~ I . . I . . .. ....

INVESTIGATOR DATA: A &

/ / '

SURFACE DOC

0 4 4 3

EquiprncnllArcn Surveyed: Asset Numbcr:

S AMPLIN

Snrnple ID:

Collection Media:

Size and L.ot Number:

Collection Solvent

Saniplc A m :

Picture ID:

DATA: ,

A 1 B C D E

SURFACE DOC

0 4 4 4 COMMENTS:

. .

SURFACE DOC

Equ ipmedArca Surveyed:

I . . . I Asset Number:

Location dcscription:

?E il -*I x' 3 - I LiI--.O

Engineering Controls: Personal Ptotcctive Equipment Uscd: ,

SURFACE DOC

0 4 4 6

EquipmcnVArca Surveyed:

EORM, Xmc. SURFACE SAMPLING DATA REC.0R.D

Assel Numbcr:

EnEinccring Controls: Personal Protective Equipment Uscd:

_ 1 - - - . . - _ _ . I. - *

I Location description:

.

A B C D E

UVVESTIGATOR DATA:. lnduslrial HygicniMH Tech (Print & Signat -7T-L a,LfricL

SURFACE DOC

. ....__

EqulprnenVArea Swvcycd: Asset Number:

LoGlion description: I

INVESTIGATOR DATA: industrial HygicnistlIH Tech (Print & Signat 7- a;,#PieL

/ =

SURFACE DOC

0 4 4 8

Equipmcnt/Arca Surveyed:

3 - 3

EORM, linc. SURFACE SAMPLING DATA RECORD

Asset Number:

i L.ocation dcscription: I

SAMPLING DATA:

A B C D E

SURFACE DOC

0 4 4 9

Enginccring Controls: Personal Ptotcctivc Equipment Uscd:

_ _ __ - ~ . - - . .

EOTCM, Inc, SURFACE SAMPLING DATA RECORD

. _ ..- ._- -

lURVEY DATA: EquiprnentlAreo Surveyed: Assct Number:

L.ocation dcscription: .

P & 3 3 -1

Collection Media: I -- Size nnd Lot Number: I Collection Solvent: I Sample Area:

Picturc ID; i Comments: +;*-

DATA: I t I I t

A I3 c R E I. I I

INVESTIGATOR DATA:

/ / '

SURFACE DOC

1 I'

EquiprncnllAren Surveyed:

i ) E 3 7 - - z

Asset Number:

En gin ee r i ng Control 5 :

_ . . . . ~ .... . . . . . . . . . . , . . . . . _ . .. . . . . . I . ~ .-." - . I ....__ . ...

INVESTXGATOR DATA: A 4 . .

Industrial HygienistnH Tech (Pent & Signature): /d)u7 Js,Lfv/-J Y

/ -

SURFACE DOC

0 4 5 1

Employcc #:

Z S ' ~ Industrial HygienistlIW Tech (Print & Signature): 7- DA71',.&

;URvEY DATA: Equipmcnt/Arca Swveycd: Asset Numbcr:

Location description:

Date. ?/L , / i f

SURFACE DOC

0 4 5 2

c

;URVEY DATA: EquipmcnUArca Surveyed: Asset Numbcr;

I L.oention description:

F ' E q 7 - i

PE.50 Engineering Controls;

I

. .. .. 1 . .. . .. ._.- " _ _ . ._-_. . . . .. . . , , , . ..__ , - , , .. . . . . . .. - .. - ., I . . .. . . . .. . . . . . . . . . . ... ,~ -,_, .. .. . .. . - . . A . - .

SURFACE DOC

0 4 5 3

EquipmenVArea Surveyed: Assct Number:

I

Lamtion dcscription:

Enginccring Controls: - . . . I . - . _ .

Pcrsonnl Protective Equiprncnt Used:

_ . - . _ _ . -.,. - ~.~ --..-. .- ~ .. - “”. . .... - . .

LMrESTIGATOR DATA: Induskid Hygicnist/M Tcch (Print & Signal -zL a,L/r?.<J(

I / ‘

SURFACE DOC

0 4 5 p- 04- EORM, Inc, SURFACE SAMPLING DATA RECORD

Engincering Conkols: _ _ - . -- -. - - .

Pcaonnl Protective Equipment Used: - - . - . - _. ~

SURFACE DOC

5

,-

URVEY DATA: EquiprntntlAren Surveyed: Assct Number:

INVESTIGATOR DATA: lndurtrial HygienisVIH Tech (Print & Sign

/drk_, 3,- t fr.&

SURFACE DOC

0 4 5 6 _- --

c-1

EORM, 1n.c. SURFACE SAMPLING DATA FZECORD e*

INVESTIGATOR DATA: /I R 1

/

SURFACE Dc)C

Equipmcnt/Area Surveyed:

Location description:

Asset Number:

Enginecring Controls: - - ., . . . - ..... . L ., - - .~ ..... .. - - - . - I ~ . . . . .. ... . . ...,_ .., ._IL ____

Pcnonal Protective Equipment Uscd:

. ., . . . .. . .

INVESTIGATOR DATA: &

,

SURFACE DOC

EORM, h c , SURF'ACE SAMPLING DATA RlEX0R.D (c o f - - -

WRVEY DATA: EquipmentIArca Surveyed: Asset Number:

Engineering Controls: Personal Protective Equipment Used:

SAMF'LIN

Sample ID:

Collection Media:

Size nnd Lot Number:

Colleclion Solvent: I Sampie hen: I Picture ID:

Commenb:

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Documents

County of Santa Cruzsccounty01.co.santa-cruz.ca.us › BDS › GovStream2 › BDSvData › ... · 2008-12-16 · December 4, 2008 AGENDA: December 16,2008 BOARD OF SUPERVISORS County