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Home My WebLink AboutCT 98-21; Seaview; Tentative Map (CT) (38)3-e 1-2000 5 = 39PM FROf^ , P. 2 *•».*• teg0 . i i •4 ;;•:..j ijii!• i DEPARTMENT OF ENVIRONMENTAL HEALTH LAND AND WATER QUALITY DIVISION P.O. BOX 129261. SAM DIEGO, CA 92112-92C1 <«1»> 33S-2222 FAX («19) 339*2»77 1.8DO-263-9933 January 28, 2000 Mr. Jim KamphHis Project Superintendent MSK Development 5142 Avenida Encinas Carlsbad. CA 92008 SEAVIEW SUBDIVISION/FORMER PORTER FARMS SITE FORMER 3612 SEAVIEW WAY. CARLSBAD. CA 4H99086-001 Dear Mr. Kamphius: The County of San Diego. Department of Environmental Health (D£H), Site Assessment and Mitigation Program (SAM) has reviewed the Modified Phase I Environmental Site Assessment at 3612 Seaview Way. Carlsbad, and the Grading Plans for Cartsbad Tract 98-21, Seaview. These reports/plans were submitted as part of a voluntary assistance program submittal to SAM. The site is proposed for the development of 9 residential units and the extension of Seaview Way. Based upon the results of a Phase I investigation prepared by MV Environmental dated December 14, 1998. the approximately 3.8-acre site was used for the commercial cultivation of ornamental flowers since at least the early 1940's. Earlier evidence of a citrus grove on the property was reported in a 1928 aerial photograph indicates at least 70 years of agricultural use. As part of the Phase I investigation, six shallow soil samples (5 to 10-inches deep) were collected from various locations within the site in November 1998 arid analyzed for organochlorine and organopnosphorus pesticides. No organophosphorus pesticides were detected above laboratory detection limits. Seven organochlorine pesticides were detected in the soil samples. DieWrin was detected above EPA residential preliminary remediation goals (PRGs) in 5 of the 6 soil samples. No other pesticide was detected above residential PRGs. The proposed grading plan for the site development shows from 9.5 to 14.5 feet of fill are planned for the western half of the site, and similar amounts of soil cutting on the eastern half of the site. The Phase I report recommended that the top 1-foot layer of site soils be removed and placed under roads, driveways or in the areas of deepest fill. SAM concurs with the Phase I recommendation, and further requests that all potentially contaminated soils be placed in areas where deep excavation activities (such as swimming pools, etc) will not be allowed or feasible, such as on steep slope areas. Please consider the use of a deed restriction for deep excavations if the contaminated soils are placed in areas potentially useable for deep excavations. "Environmental and public health through leadership, partnership and science" 3-01-3000 5:40PM FROM^ P-3 TEST S T NVIRONMENTAL URVEYS AND ESTING 3685 Ruette De ViHe. San Dieao. CA 92130 (858)793-1236 January 3, 2000 Mr. Jim Kamphuis MSK Development Group 5142 Avenida Encinas Carlsbad, CA 92008 Dear Mr. Kamphuis: TEST Environmental Surveys and Testing was retained by MSK Development Group to provide asbestos abatement monitoring and clearance air sampling during the removal of asbestos containing materials at 3612 Seaview Way in Carlsbad, California. The asbestos abatement monitoring and clearance air sampling were conducted on December 27 to December 30, 1999 by Mr. Magnus Leopold, Certified Asbestos Consultant from TEST, The asbestos abatement was conducted by Abatement Service Operations, Inc., 168 Miller Avenue, El Cajon, California. I. ASBESTOS ABATEMENT LOCATION The asbestos abatement was conducted at the following location: 3612 Seaview Way, Carlsbad, California 1, Roof - Transite sheeting (2 layers [approx. 1/4 inch each)) below layers of asphalt roof tile and asphalt roof sheeting 2. Roof to crawlspace - transite ventilation pipes (3 pipes) Roof to water heater - transite exhaust pipe (1 pipe) 3- Roof - miscellaneous asphalt penetration mastic (black) around pipes, solar panel footers, and chimney 3-01-2000 B:40PM FROM P-'"' II. ASBESTOS ABATEMENT PROCEDURE A. Set-UpS 1. Drop cloths (plastic sheeting) were placed around the house to collect stray roofing material and to ease clean-up 2. A waste dumpster was double lined with plastic sheeting 3. A one stage shower was erected as a decontamination unit 4. OSHA Asbestos warning signs and OSHA Asbestos barrier tape was placed around the waste dumpster 5. OSHA Asbestos warning signs were placed on the entrance to the decontamination unit B. Removal 1 . Top Layer of Asphalt Roofing The top layer of asphalt roofing was cut into sections and removed from the roof and stored on the back patio (non-asbestos containing material). 2. Second Layer of Asphalt Roofing and Transite Sheeting The asphalt roofing tiles and transite sheeting were wetted down prior, during, and after removal from the roof using Hudson sprayers. The asphalt roof tiles were removed using long handled scrapers, by prying up the nails holding the tiles, and then scraping up the transite sheets. Since the transite sheets were all broken into small pieces by the action of removing the nails and scraping the sheeting loose on the roof, the second layer of asphalt roofing was considered contaminated with asbestos and so it was also disposed of in the waste dumpster. Note: It was determined that there weren't any transite sheets under the second layer of asphalt roofing for the garage area, so that roofing material was not removed. The asbestos containing material is considered non-friable. The roof was then detail cleaned, the drop sheets removed, and additional pieces picked up and disposed of in the waste dumpster. 3. Transite Ventilation Pipes The transite ventilation pipes (3) from the roof to the crawlspace were removed by breaking into the drywall within the house, cutting the metal straps holding them in place, and then sliding the pipes out through the roof. The transite pipe above the water heater was removed by pulling up through the roof. The transite pipes were placed in the waste dumpster. TEST ENVIRONMENTAL SURVEYS AND TESTING 3-01-2000 5:41PM FROM•"*"- P. 5 4. Roof - Miscellaneous Asphalt Penetration Mastic Miscellaneous asphalt penetration mastic on the pipes going through the roof, on the footers of the 2 solar cells, and around the chimney, were removed by scraping and placed in the waste dumpster. The waste dumpster was covered and sealed with a double layer of plastic. The Industrial Hygienist inspected the asbestos removal locations for visible residue (visual clearance) and gave approval. The roof area was then sprayed with lockdown encapsulant. A clearance air sample was then collected by the Industrial Hygienist on the roof and the sample was analyzed by PCM (phase contrast microscopy) at a certified laboratory. III. ABATEMENT PERSONNEL AND PROTECTIVE EQUIPMENT Abatement Service Operations, Inc. personnel involved in the ACM removal were Eric Olson, Francisco Flores, Keith Russell, and Richard Myer. The certifications for worker asbestos removal training, medical clearance, and respirator fit testing were reviewed and are included in this report. Abatement Service Operations, Inc. personnel wore full protective equipment during removal which included Tyvek suits (with attached hoods and boots), and half-face respirators with HEPA cartridges. IV. CLEARANCE AIR SAMPLING The background sample was not collected since there was'nt any area to be reentered after asbestos abatement. The clearance air sample was collected on the roof and analyzed by phase contrast microscopy (PCM). Phase Contrast Microscopy (PCM) Sampling Procedures The air samples were taken using a Dawson high volume air sampling pump connected to a plastic cassette with a two inch anti-static cowl and 25 millimeter 0.80 micron mixed cellulose ester filter (MCEF) at a flow rate of approximately 15 liters per minute for approximately 1 1/2 hours. TEST ENVIRONMENTAL SURVEYS AND TESTING 3-01-2000 E--A1PM FROM P-6 Phase Contrast Microscopy (PCM) Analysis Method The air samples were analyzed according to National Institute of Occupational Safety and Health (NIOSH) Method 7400A by a National Voluntary Laboratory Accreditation Program (NVLAP) laboratory. V. RESULTS OF CLEARANCE AIR SAMPLING The PCM clearance air sample (ML1230-1) taken on the roof had an asbestos fiber concentration of less than 0,003 fibers per cubic centimeter (<0.003 f/cc). The clearance air sample was below EPA's guideline allowing an area to be re-occupied following asbestos abatement (0,01 fibers fee) (See TABLE 1). If there are any questions concerning this report, then please 1 me at any time.call me at any time. Very truly yours,Certified Asbestos Consultant Cert. No. 93-1124Magnus Leopold Industrial Hygienist General Manager - s TEST ENVIRONMENTAL SURVEYS AND TESTING 3-01-2000 5:41PM FROM ' P. 7 TABLE 1 SUMMARY OF AIR SAMPLING RESULTS CLEARANCE AIR SAMPLE (PCM SAMPLING) 3612 Seaview Way, Carlsbad, California Asbestos Sample Sample Flow Volume Cone. Sample No. Location On Off (LPM) (Liters) (fibers/cc) ML1230-1 Roof 1:31 3:11 pro 15.20 1520 <0.003 - middle - west side TEST ENVIRONMENTAL SURVEYS AND TESTING ASBESTOS WORKERS ABATEMENT TRAINING PROGRAM OF SOUTHERN CALIFORNIA 670 E. FOOTHILL BLVD. # 3 AZUSA, CA 91702 626 - 334 - 6884 This is to certify that Eric Olson SSI tf 617-01-8288 Abatement Service Operation has completed & passed the 8 hr. Recertification for the Environmental Protection Agency which meets ai) ASHARA requirements for the Asbestos Abatement Contractor Supervisor Course from 02/05/99 to 02/05/99 Certificate expires on: 02/05/00 t in TomL. Ouliema MC ArfrramiUitor ft Trwniitg Director for the AW ATP FtcilHy for Lcc»l 5 Please call (626) 334-6884 (o verify if the Training certificate is authentic? RCS 00159 Co