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HomeMy WebLinkAboutCT 05-15; La Costa Oaks Neigh 3.3; Additional seismic and post-tensioned foundation recommen; 2008-04-21GEOCON J N C: O !t ]> O 1! A T K D GEOTECHNICAL CONSULTANTS Project No. 06105-52-22 April 21, 2008 Colrich 4747 Morena Boulevard, Suite 100 San Diego, California 92117 Attention: Ms. Ten Shusterman Subject: VILLAGES OF LA COSTA - THE OAKS NORTH NEIGHBORHOOD 3.3 SOUTH CARLSBAD, CALIFORNIA ADDITIONAL SEISMIC AND POST-TENSIONED FOUNDATION RECOMMENDATIONS Reference: Update Geotechnical Report Villages of La Costa, The Oaks North, Neighborhood 3.3 South, Lots 19 through 35 and Lots 80 through 115, Carlsbad, California, prepared by Geocon Incorporated, dated August H1008 Project No. 07650-52-02). Dear Ms. Shusterman: In accordance with your request, we have prepared this letter provide additional seismic and post- tensioned design parameters for the subject development. We understand planned structures will be designed based on the 2007 California Building Code. We used the computer program Seismic Hazard Curves and Uniform Hazard Response Spectra, provided by the USGS. Table 1 summarizes site-specific design criteria obtained from the 2007 California Building Code (CBC; Based on the 2006 International Building Code [IBC]), Chapter 16 Structural Design, Section 1613 Earthquake Loads. The short spectral response uses a period of 0.2 second. TABLE 1 2007 CBC SEISMIC DESIGN PARAMETERS Parameter Site Class Spectral Response - Class B (short), Ss Spectral Response - Class B (1 sec), Si Site Coefficient, FA Site Coefficient, Fv Maximum Considered Earthquake Spectral Response Acceleration (short), SMS Maximum Considered Earthquake Spectral Response Acceleration - (1 sec), SM1 5% Damped Design Spectral Response Acceleration (short), SDS 5% Damped Design Spectral Response Acceleration (1 sec), Sm Value C 1.099g 0.414g 1.000 1.386 1.099g 0.573g 0.733g 0.382g D 1.099g 0.4 14g 1.060 1.586 1.165g 0.656g 0.776g 0.437g IBC-06 Reference Table 1613. 5.2 Figure 1613.5(3) Figure 1613.5(4) Table 1613. 5.3(1) Table 1613. 5.3(2) Section 1613.5.3 (Eqn 16-37) Section 1613.5.3 (Eqn 16-38) Section 1613.5.4 (Eqn 16-39) Section 1613.5.4 (Eqn 16-40) 6960 F!oncieri Drive • SanDiego.Caiitornio92121-297.il • Telephone (858) 558-6900 • Fax (858) 558.6159 Conformance to the criteria in Table 1 for seismic design does not constitute any kind of guarantee or assurance that significant structural damage or ground failure will not occur if a large earthquake occurs. The primary goal of seismic design is to protect life, not to avoid all damage, since such design may be economically prohibitive. The post-tensioned systems should be designed by a structural engineer experienced in post-tensioned slab design and design criteria of the Post-Tensioning Institute (PTI), Third Edition, as required by the 2007 California Building Code (CBC Section 1805.8). Although this procedure was developed for expansive soil conditions, we understand it can also be used to reduce the potential for foundation distress due to differential fill settlement. The post-tensioned design should incorporate the geotechnical parameters presented on Table 2 for the particular Foundation Category designated. The parameters presented in Table 2 are based on the guidelines presented in the PTI, Third Edition design manual. TABLE 2 POST-TENSIONED FOUNDATION SYSTEM DESIGN PARAMETERS Post-Tensioning Institute (PTI), Third Edition Design Parameters Thornthwaite Index Equilibrium Suction Edge Lift Moisture Variation Distance, eM (feet) Edge Lift, yM (inches) Center Lift Moisture Variation Distance, eM (feet) Center Lift, yM (inches) Foundation Category I -20 3.9 5.3 0.61 9.0 0.30 II -20 3.9 5.1 1.10 9.0 0.47 III -20 3.9 4.9 1.58 9.0 0.66 The foundations for the post-tensioned slabs should be embedded in accordance with the recommendations of the structural engineer. If a post-tensioned mat foundation system is planned, the slab should possess a thickened edge with a minimum width of 12 inches and extend below the clean sand or crushed rock layer. If the structural engineer proposes a post-tensioned foundation design method other than PTI, Third Edition: • The deflection criteria presented in Table 2 are still applicable. • Interior stiffener beams should be used for Foundation Categories II and III. • The width of the perimeter foundations should be at least 12 inches. • The perimeter footing embedment depths should be at least 12 inches, 18 inches, and 24 inches for foundation categories I, II, and III, respectively. The embedment depths should be measured from the lowest adjacent pad grade. Our experience indicates post-tensioned slabs are susceptible to excessive edge lift, regardless of the underlying soil conditions. Placing reinforcing steel at the bottom of the perimeter footings and the interior stiffener beams may mitigate this potential. Current PTI design procedures primarily address the potential center lift of slabs but, because of the placement of the reinforcing tendons in die top of the slab, the resulting eccentricity after tensioning reduces the ability of the system to mitigate edge lift. The structural engineer should design the foundation system to reduce the potential of edge lift occurring for the proposed structures. During the construction of the post-tension foundation system, the concrete should be placed monolithically. Under no circumstances should cold joints form between the footings/grade beams and the slab during the construction of the post-tension foundation system. Project No. 06105-52-22 -2-April21,2008 Category I, II, or III foundations may be designed for an allowable soil bearing pressure of 2,000 pounds per square foot (psf) (dead plus live load). This bearing pressure may be increased by one-third for transient loads due to wind or seismic forces. The estimated maximum total and differential settlement for the planned structures due to foundation loads is 1 inch and Vi inch, respectively. Isolated footings, if present, should have the minimum embedment depth and width recommended for conventional foundations for a particular foundation category. The use of isolated footings, which are located beyond the perimeter of the building and support structural elements connected to the building, are not recommended for Category III. Where this condition cannot be avoided, the isolated footings should be connected to the building foundation system with grade beams. For Foundation Category III, consideration should be given to using interior stiffening beams and connecting isolated footings and/or increasing the slab thickness. In addition, consideration should be given to connecting patio slabs, which exceed 5 feet in width, to the building foundation to reduce the potential for future separation to occur. Special subgrade presaturation is not deemed necessary prior to placing concrete; however, the exposed foundation and slab subgrade soil should be moisture conditioned, as necessary, to maintain a moist condition as would be expected in any such concrete placement. The recommendations of this letter are intended to reduce the potential for cracking of slabs due to expansive soil (if present), differential settlement of existing soil or soil with varying thicknesses. However, even with the incorporation of the recommendations presented herein, foundations, stucco walls, and slabs-on-grade placed on such conditions may still exhibit some cracking due to soil movement and/or shrinkage. The occurrence of concrete shrinkage cracks is independent of the supporting soil characteristics. Their occurrence may be reduced and/or controlled by limiting the slump of the concrete, proper concrete placement and curing, and by the placement of crack control joints at periodic intervals, in particular, where re-entrant slab corners occur. Geocon Incorporated should be consulted to provide additional design parameters as required by the structural engineer. If you have any questions regarding this correspondence, or if we may be of further service, please contact the undersigned at your convenience. Very truly yours, GEOCOIsWCORPORATEQ. CEG 1778 AS:SW:dmc (2) Addressee Shawn Weedon GE2714 Project No. 06105-52-22 -3-April 21,2008 ! 1 1 1 1 i I i I I 1 I I 1 I ] GEOCON I \ (' O H !' O n A T E D GEOTECHNICAt CONSULTANTS Project No. 06105-52-22 December 5. 2007 L C Oaks 3.3, LLC 4747 Morena Boulevard. Suite 100 San Diego, California 92117 Attention: Subject: Mr. Steve Butler THE OAKS NORTH NEIGHBORHOOD 3.3 SOUTH CARLSBAD, CALIFORNIA DRAINAGE SWALES Gentlemen: In accordance with your request, this letter has been prepared to provide our opinion regarding the precise grading of sideyard swales along residential units within the subject development. If drainage swales are planned for a location within 5 feet from the structure perimeter, the footings should be deepened to accommodate minimum foundation embedment. We recommend that the location of the deepened footing be shown on the plot plans. We understand that Geocon Incorporated will be provided copies of the plot plans and will observe in the field that the deepened footings are properly excavated during the foundation excavation observation. Should you have any questions regarding this letter, or if we may be of further service, please contact the undersigned at your convenience. Very truly yours, GEOCON INCORPORATED AS:dmc (2) Addressee (2/del) Hunsaker & Associates Attention. Ms. Marybeth Murray 6960 Flonders Drive • Son Diego. California 92121-2974 • Telephone (858) 5586900 • Fox (858) 558-6159 N FINAL REPORT OF TESTING AND OBSERVATION SERVICES PERFORMED DURING SITE GRADING VILLAGES OF LA COSTA - THE OAKS NORTH NEIGHBORHOOD 3.3 (SOUTH) LOTS 19 THROUGH 35 AND LOTS 80 THROUGH 115 CARLSBAD, CALIFORNIA PREPARED FOR REAL ESTATE COLLATERAL MANAGEMENT COMPANY % MORROW DEVELOPMENT INCORPORATED CARLSBAD, CALIFORNIA AUGUST 14, 2007 PROJECT NO. 06105-52-20 GEOCON INCORPORATED GEOTECHNICAL CONSULTANTS Project No. 06105-52-20 August 14,2007 Real Estate Collateral Management Company % Morrow Development Incorporated 1903 Wright Place, Suite 180 Carlsbad, California 92008 Attention: Mr. Tim O'Grady Subject: VILLAGES OF LA COSTA - THE OAKS NORTH NEIGHBORHOOD 3.3 (SOUTH) - LOTS 19 THROUGH 35 AND LOTS 80 THROUGH 1 15 CARLSBAD, CALIFORNIA FINAL REPORT OF TESTING AND OBSERVATION SERVICES PERFORMED DURING SITE GRADING Dear Mr. O'Grady: In accordance with your request and our proposal dated February 9, 2006, we provided compaction testing and observation services during the grading of the subject site. We performed our services during the period of April 26, 2006 through April 8, 2007. The scope of our services included: • Observing the grading operations, including the removal and/or processing of topsoil, undocumented fill, colluvium, alluvium, and undercutting lots with rock exposed at grade and cut/fill transition lots. • Performing in-place dry density and moisture content tests in fill placed and compacted at the site. • Performing laboratory tests to aid in evaluating maximum dry density and optimum moisture content and shear strength of the compacted fill. Additionally, we performed laboratory tests on samples of soil present at finish-grade to evaluate expansion characteristics and water- soluble sulfate content. • Preparing an "As-Graded" Geologic Map. • Preparing this final report of grading. The purpose of this report is to document that the grading for Neighborhood 3.3 (South), which includes 53 single-family residential pads, has been performed in substantial conformance with the recommendations of the project geotechnical report and that fill materials have been properly placed and compacted. We observed the grading operations for Neighborhood 3.3 (South) concurrently with other neighborhoods within The Oaks North project. 6960 Flanders Drivs • San Diego, California 92121-2974 • Telephone (858) 558-6900 • Fax (858) 558-6159 GENERAL The grading contractor for the project was Pinnick Construction Incorporated of Lakeside, California. Grading plans for the project were prepared by Hunsaker and Associates and are entitled Rough Grading and Erosion Control Plans for La Costa Oaks North Neighborhood 3.3. Drawing No. 446- 5A, City of Carlsbad approval dated July 12,2007. We used an electronic version of the grading plans was used as the base map for our "As-Graded" Geologic Map (Figures 1 and 2). The project geotechnical report is entitled Update Geotechnical Investigation, Villages of La Costa-The Oaks, Carlsbad, California, prepared by Geocon Incorporated, dated August 3, 2001 (Project No. 06105- 12-04). References to elevations and locations herein were based on surveyor's or grade-checker's stakes in the field and/or interpolation from the referenced Grading Plans. Geocon Incorporated does not provide surveying services and, therefore, has no opinion regarding the accuracy of the as-graded elevations or surface geometry with respect to the approved grading plans or proper surface drainage. GRADING Neighborhood 3.3 (South) is located within the western portion of the Villages of La Costa - The Oaks North development. This neighborhood is located west of Rancho Santa Fe Road and east of Avenida Soledad. The site is bound by a ISO-foot wide San Diego Gas and Electric easement to the south, open space to the west and Neighborhood 3.1 to the north. Prior to grading, the site primarily consisted of two ridges with shallow surficial deposits and several tributary drainages draining north and south ultimately to San Marcos Creek. Grading for the site consisted of daylight cuts and fills to achieve finish-grade elevations. Grading began with the removal and export of brush, vegetation and constriction debris from the area to be graded. The brush was then exported. Topsoil and alluvial soils were removed to expose formational material. Within these areas, and prior to placing fill, the exposed (overexcavated) ground surface was scarified (where possible), moisture conditioned as necessary, and compacted Areas of remedial grading that exposed metavolcanic or granitic rock was not scarified. Fill materials derived from on-site blasting, excavations, and crushed material were then placed and compacted in layers until the design elevations were attained. In addition, fill was placed as a result of undercutting cut-fill transition lots and lots where metavolcanic rock was exposed at grade. Roadway and parkway undercuts were also performed where metavolcanic was exposed at grade. Roadway undercuts consisted of undercutting to a depth of approximately 1 foot below the deepest utility. Parkway undercuts consisted of undercutting to a depth of approximately 6 feet below finish-grade. Lot undercuts consisted of undercutting to a depth of at least 3 feet below finish-grade. Project No. 06105-52-20 - 2 - August 14,2007 w Fill Materials and Placement Procedures ^ The on-site fill materials generally varied between angular gravels and boulders produced by blasting ** and crushing of hard metavolcanic and granitic rock to clayey fine sands, and sandy to clayey gravels. W Structural fill placed and compacted at the site consists of material that can be classified into three V' zones: V v • Zone A - Material placed within 3 feet from pad grade, 6 feet from parkway grade, and ^ within roadways to at least 1 foot below the deepest utility consists of "soil" fill with a maximum particle dimension of 6-inches. W ^ • Zone B - Material placed within 10 feet from pad grade and below Zone A consisted of "soil- rock" fill with a maximum particle dimension of 12 inches. In addition, material placed on ^ the outer 6 feet of fill slopes and 2 feet below Zone A for fills in roadways and parkways v consists of "soil-rock" fill with a maximum particle dimension of 12 inches. W • Zone C - Material placed below Zone B consisted of "soil-rock" fill with a maximum particle W dimension of 48 inches. %r ^ Placement procedures for "soil-rock" fill consisted of spreading and compacting the material with a . D9 or larger Caterpillar bulldozer with a maximum lift size of approximately 3 feet. Materials placed as "soil-rock" fill were watered heavily during spreading to help fill voids with finer material and "seat" the larger rocks. During the placement of each lift, the contractor applied compactive effort to the fill by wheel-rolling and compacting with loaded rock trucks. "Soil fill" was placed in lifts no thicker than would allow for adequate bonding and compaction. The soil was moisture conditioned as necessary and m conventional heavy-duty compaction equipment. " soil was moisture conditioned as necessary and mixed during placement and then compacted utilizing *** We observed compaction procedures during grading operations and performed in-place density tests **W to evaluate the dry density and moisture content of the "soil" and "soil-rock" fill material. We —^ performed in-place density tests in general conformance with ASTM Test Method D 2922-05 m^ (nuclear). The results of the in-place dry density and moisture content tests are summarized on ^ Table I. In general, the in-place density test results indicate that the fill soil has a dry density of at ^ least 90 percent of the laboratory maximum dry density near to slightly above optimum moisture ™. content at the locations tested. The approximate locations of the in-place density tests are shown on •* the As-Graded Geologic Map (Figures 1 and 2). -V We performed compaction procedures during the grading of Neighborhood 3.3 South concurrently 1-1 with Neighborhoods 3.1, 3.2, 3.4, 3.5 and 3.7 of the Villages of La Costa - The Oaks North ^^- development. The results presented on Table I apply to Neighborhood 3.3 North and South, ,** respectively. As such, the test numbers are not in consecutive order. Any tests taken outside of the Project No. 06105-52-20 - 3 - August 14, 2007 subject neighborhood will be included in reports for other neighborhoods within The Oaks North development. We corrected the laboratory maximum dry density and optimum moisture content on fill soils being tested containing rocks larger than %inch Using methods suggested by AASHTO T224-86 and others. The values of maximum dry density and optimum moisture content presented on Table I reflect these corrections. We tested samples of material used for fill to evaluate moisture-density relationships, optimum moisture content and maximum dry density (ASTM D 1557-02). We performed direct shear tests (ASTM D 3080-04), on samples used within fill slopes. We tested samples within the upper 3 feet of finish grade to evaluate the expansion index (ASTM D 4829-03) and tested some samples for water- soluble sulfate content (California Test No. 417). The results of the laboratory tests are summarized on Tables II through V. Slopes The project slopes consisted of cut and fill slopes constructed at inclinations of 2:1 (horizontal: vertical) or flatter with maximum heights of approximately 45 feet. All slopes should be planted, drained, and maintained to reduce erosion. Slope irrigation should be kept to a minimum to just support the vegetative cover. Surface drainage should not be allowed to flow over the top of the slope. Subdralns Canyon subdrains were installed at the general locations shown on the "As-Graded" Geologic Map (Figures 1 and 2). In addition, the subdrains were "as-built" for location and elevation by the project civil engineer. The subdrains generally consisted of a 6-inch diameter PVC, Schedule 40, perforated pipe placed in crushed aggregate surrounded by Mirafi 140N (or equivalent) filter fabric. The drains were typically placed at least 15 feet below finish grade and constructed at a flow gradient of at least 1 percent. During construction, the subdrains were generally outlet into the open space areas. It is our understanding that the two subdrain headwall outlets will be constructed by the master developer. The canyon subdrain outlets should be maintained regularly to prevent sediment and debris from obstructing the free flow of water out of the subdrain system. Project No. 06105-52-20 -4- August 14.2007 * v Finish-grade Soil Conditions ""* ^ Observations and laboratory test results indicate that the prevailing soil conditions within the upper ** ^ approximately 3 feet of finish-grade of the lots have an expansion potential of "very low" to "low" m *r (Expansion Index of SO or less) as defined by Uniform Building Code (UBC) Table 18-I-B. Table VI W presents a summary of the indicated Expansion Index of the prevailing subgrade soil conditions for W each lot. *" V — ^ Although rocks larger than 6 inch were not intentionally placed within the street undercut fill and the .M ^ upper 3 feet of pad grade, some larger rocks may exist at random locations. In addition, excavations w deeper than the undercut depths may require blasting. JW ^^^ * We also tested some samples obtained for expansion index testing to evaluate the percentage of * water-soluble sulfate. Results from the laboratory water-soluble sulfate tests are presented in Table V. „ The results indicate the on-site material tested possesses "negligible" sulfate exposure to concrete m structures as defined by UBC Table 19-A-4. m Geocon Incorporated does not practice hi the field of corrosion engineering. Therefore, if ** ^ improvements mat could be susceptible to corrosion are planned, further evaluation by corrosion ^ ^ engineer should be performed. W * W SOIL AND GEOLOGIC CONDITIONS •«» ^. The soil and geologic conditions encountered during grading were found to be similar to those<•• ^^ described in the project geotechnical report Santiago Peak Volcanics (Jsp) is exposed at grade on cut :~* slopes and was exposed within cleanouts, in pad undercuts and cut areas within street right-of-ways m within the southern portion of Neighborhood 3.3. Compacted fill was placed in areas designated as ^" Qcf on Figures 1 and 2. In addition, compacted fill placed hi undercut areas is designated as Quc. W Table VII presents a summary of As-Graded Building Pad Conditions for each pad.m '" W The As-Graded Geologic Map (Figures 1 and 2) depicts the general geologic conditions observed. No m W soil or geologic conditions were observed during grading that would preclude the continued ^ development of the property as planned. m v CONCLUSIONS AND RECOMMENDATIONS <*i *» 1.0 General * w 1.1 Based on observations and test results, it is the opinion of Geocon Incorporated that the •M ^r grading to which this report pertains has been performed hi substantial conformance with ** the recommendations of the previously referenced project soils report and the geotechnical Project No. 06105-52-20 -5- August 14, 2007 I ; requirements of the grading plans. Soil and geologic conditions encountered during grading that differ from those expected in the project soils report are not uncommon. Where such conditions required a significant modification to the recommendations of the project soils report, they have been described herein. 1.2 No soil or geologic conditions were observed during grading that would preclude the continued development of the property as planned. Based on laboratory test results and field observations, it is the opinion of Geocon Incorporated that the fill soil observed and tested as part of the grading for this neighborhood was generally compacted to a dry density of at least 90 percent of the laboratory maximum dry density near to slightly above optimum moisture content. 2.0 Future Grading 2.1 Any additional grading performed at the site should be accomplished in conjunction with our observation and compaction testing services. Grading plans for any future grading should be reviewed by Geocon Incorporated prior to finalizing. Trench and wall backfill should be compacted to a dry density of at least 90 percent of the laboratory maximum dry density near or above optimum moisture content. This office should be notified at least 48 hours prior to commencing additional grading or backfill operations. 3.0 Update Geotechnical Report 3.1 An update geotechnical report should be prepared by Geocon Incorporated for Neighborhood 3.3 (South). The report should include foundation recommendations for reducing the detrimental effect of expansive soil and differential fill settlement across individual structures. In addition, retaining wall recommendations and seismic design criteria should be included. 4.0 Slope Maintenance 4.1 Slopes that are steeper than 3:1 (horizontal:vertical) may, under conditions that are both difficult to prevent and predict, be susceptible to near-surface (surficial) slope instability. The instability is typically limited to the outer three feet of the slope and usually does not directly impact the improvements on the pad areas above or below the slope. The occurrence of surficial instability is more prevalent on fill slopes and is generally preceded by a period of heavy rainfall, excessive irrigation, or the migration of subsurface seepage. The disturbance and/or loosening of the surficial soils, as might result from root growth, soil expansion, or excavation for irrigation lines and slope planting, may also be a . Project No. 06105-52-20 - 6 - August 14,2007 w ^ significant contributing factor to surficial instability. Therefore, to the maximum extent ^. practical: ^, • Disturbed/loosened surficial soil should be either removed or properly recompacted, ^ • Irrigation systems should be periodically inspected and maintained to eliminate leaks and excessive irrigation, and W • Surface drains on and adjacent to slopes should be periodically maintained to ^ preclude ponding or erosion. Although the incorporation of the recommendations should reduce the potential for surficial slope instability, it will not eliminate the ^ possibility and, therefore, it may be necessary to rebuild or repair a portion of the ^ project's slopes in the future. W , 5.0 Drainage W 5.1 Adequate drainage provisions are critical to the future performance of the project. Under no ^ circumstances should water be allowed to pond. The building pads and sheet-graded areas ^ should be properly finish-graded so that drainage water is directed away from foundations, ^ pavements, concrete slabs, and slope tops to controlled drainage devices. v 5.2 Underground utilities should be leak free. Utility and irrigation lines should be checked i periodically for leaks for early detection of water infiltration and detected leaks should be repaired promptly. Detrimental soil movement could occur if water is allowed to infiltratei ^p the soil over a prolonged period. V 5.3 Landscaping planters adjacent to paved areas are not recommended due to the potential for i surface or irrigation water to infiltrate the pavement's subgrade and base course. Subdrains ^" to collect excess irrigation water and transmit it to drainage structures or impervious above- W grade planter boxes should be used. In addition, where landscaping is planned adjacent to 1W the pavement, a cutoff wall should be constructed along the edge of the pavement that , W extends at least 6 inches below the bottom of the base material. .V w LIMITATIONS i ^" The conclusions and recommendations contained herein apply only to our work with respect to ^" grading and represent conditions at the date of our final observation on March 8, 2007. Any ' W subsequent grading should be done in conjunction with our observation and testing services. As used 1W herein, the term "observation" implies only that we observed the progress of the work with which we ^, agreed to be involved. Our services did not include the evaluation or identification of the potential ^ presence of hazardous materials. Our conclusions and opinions as to whether the work essentially Project No. 06105-52-20 - 7 - August 14,2007 complies with the job specifications are based on our observations, experience and test results. Subsurface conditions, and the accuracy of tests used to measure such conditions, can vary greatly at any time. We make no warranty, expressed or implied, except that our services were performed in accordance with engineering principles generally accepted at this time and location. We will accept no responsibility for any subsequent changes made to the site by others, by the uncontrolled action of water, or by the failure of others to properly repair damages caused by the uncontrolled action of water. The findings and recommendations of this report may be invalidated wholly or partially by changes outside our control. Therefore, this report is subject to review and should not be relied upon after a period of three years. -w > V #w Should you have any questions regarding this report, or if we may be of further service, please contact the undersigned at your convenience. Very truly yours, GEOCON INCORPORATED Michael C. Ertwine Senior Staff Geologist MCE:AS:SW:dmc (6/del) Addressee HSadr CEG 1778 Shawn Weedon GE2714 No. 2714 Exp. 06/30/09 38PF( Project No. 06105-52-20 -8-August 14, 2007 TABLE I SUMMARY OF HELD DENSITY TEST RESULTS Test No. SZ sz SZ sz sz sz sz sz sz sz sz sz 60 61 62 63 64 85 86 87 88 89 90 % 97 97 A 97 B 104 106 107 115 117 118 119 120 121 126 129 130 131 132 133 163 Date Location 04/26/06 Unit 3.3; Lot 114 04/27/06 Unit 3.3; Lot 114 04/27/06 Unit 3.3; Lot 11 3 04/27/06 Unit 3.3; Lot 110 04/27/06 Unit 3.3; Lot 113 05/05/06 Unit 3.3; Lot 115 05/05/06 Unit 3.3; Lot 113 05/05/06 Unit 3.3; Lot 115 05/08/06 Unit 3.3; Lot 115 05/08/06 Unit 3.3; Lot 113 05/08/06 Unit 3.3; Lot 115 05/09/06 Unit 3.3; Lot 113 05/09/06 Unit 3.3; Lot 110 05/09/06 Unit 3.3; Lot 1 10 05/10/06 Unit 3.3; Lot 110 05/10/06 Unit 3.3; Lot 115 05/10/06 Unit 3.3; Lot 113 05/10/06 Unit 3.3; Lot 115 05/12/06 Unit 3.3; Lot 98 05/12/06 Unit 3.3; Lot 100 05/12/06 Unit 3.3; Lot 103 05/12/06 Unit 3.3; Lot 98 05/12/06 Unit 3.3; Lot 104 05/12/06 Unit 3.3; Lot 101 05/15/06 Unit 3.3; Lot 113 05/15/06 Unit 3.3; Lot 99 05/15/06 Unit 3.3; Lot 102 05/15/06 Unit 3.3; Lot 104 05/15/06 Unit 3.3; Lot 114 05/15/06 Unit 3.3; Lot 100 05/17/06 Unit 3.3; Lot 115 Elev. or Depth (ft) 485 475 480 483 487 480 484 485 490 493 495 497 500 500 500 501 503 502 500 503 508 506 512 509 503 509 512 515 505 511 508 Curve No. 3 3 4 4 4 4 4 4 4 3 4 3 4 4 4 4 4 4 4 4 4 3 4 4 4 4 4 4 3 4 3 Plus 3/4" Rock (%) 30 0 20 50 20 40 40 40 40 20 20 20 10 0 40 20 0 30 30 20 20 0 40 10 30 40 10 30 0 10 30 Adj. MDD (pcf) 135.6 129.0 131.0 138.4 131.0 136.0 136.0 136.0 136.0 133.4 131.0 133.4 128.5 126.0 136.0 131.0 126.0 133.5 133.5 131.0 131.0 129.0 136.0 128.5 133.5 136.0 128.5 133.5 129.0 128.5 135.6 Adj. OMC (%) 7.2 9.6 10.1 7.5 10.1 8.4 8.4 8.4 8.4 8.0 10.1 8.0 11.0 12.0 8.4 10.1 12.0 9.2 9.2 10.1 10.1 9.6 8.4 11.0 9.2 8.4 1 1.0 9.2 9.6 11.0 7.2 Field Dry Dens, (pcf) 122.9 117.8 121.2 124.7 117.8 126.3 123.7 128.0 124.9 127.2 121.5 120.8 113.8 114.7 128.4 119.1 118.4 121.6 120.4 121.6 120.4 116.7 123.8 116.4 121.8 127.0 115.9 120.3 118.7 120.2 126.5 Field Moist. Cont. (%) 8.8 11.4 11.0 8.8 11.9 9.9 11.3 9.2 10.1 8.8 10.8 9.6 6.0 6.9 8.3 14.7 11.8 10.3 11.6 11.9 9.7 10.8 8.9 13.4 11.6 8.9 13.6 12.4 9.5 12.4 8.6 Field Rel. Comp. (%) 91 91 93 90 90 93 91 94 92 95 93 91 89 91 94 91 94 91 90 93 92 90 91 91 91 93 90 90 92 94 93 Req'd. Rel. Comp. (%) 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 Project No. 06105-52-20 August 14,2007 t . i i i ii if is i i 11 ft i ft. i ii i j §i ft i ii tf f f f* 1 ^ \ Test No. SZ 164 SZ 169 no SZ 226 287 290 291 433 434 435 438 504 505 506 532 534 621 621 A 621 B 622 623 653 654 655 656 657 658 659 680 680 A 681 r r (~ ^ * Date 05/17/06 05/18/06 05/18/06 05/30/06 06/06/06 06/07/06 06/07/06 07/05/06 07/05/06 07/06/06 07/06/06 07/14/06 07/14/06 07/14/06 07/19/06 07/19/06 08/01/06 08/01/06 08/01/06 08/01/06 08/01/06 08/07/06 08/07/06 08/07/06 08/07/06 08/08/06 08/08/06 08/08/06 08/08/06 08/08/06 08/08/06 ™ w » *• •• * « j w •^• VB- TABLE 1 SUMMARY OF FIELD DENSITY TEST RESULTS Elev. Plus or 3/4" Adj. Depth curve Rock MOD Location Unit 3.3; Lot 115 Unit 3.3; Lot 105 Unit 3.3; Lot 115 Unit 3.3; Lot 74 Unit 3.3; Lot 115 Unit 3.3; Lot 114 Unit 3.3; Lot 115 Unit 3.3; Sitio Corazon 24+00 Unit 3.3; Sitio Corazon 22+00 Unit 3.3; Sitio Corazon 22+30 Unit 3.3; Sitio Corazon 24+70 Unit 3.3; Sitio Altura 14+05 Unit 3.3; Sitio Altura 13+45 Unit 3.3; Sitio Altura 14+25 Unit 3.3; Lot 120 Unit 3.3; Lot 119 Unit 3.3; Lot 10 Unit 3.3; Lot 10 Unit 3.3; Lot 10 Unit 3.3; Lot 10 Unit 3.3; Lot 16 Unit 3.3; Lot 113 Unit 3.3; Lot 1 14 Unit 3.3; Lot 113 Unit 3.3; Lot 114 Unit 3.3; Lot 1 13 Unit 3.3; Lot 113 Unit 3.3; Lot 114 Unit 3.3; Lot 114 Unit 3.3; Lot 1 14 Unit 3.3; Lot 22 (ft) 510 517 510 491 518 520 523 532 534 536 535 551 553 555 533 535 528 528 528 535 541 508 511 514 517 520 522 525 527 527 536 No. 3 4 4 4 4 4 4 4 4 4 4 6 6 3 4 4 3 3 3 18 18 3 3 3 3 3 3 3 18 18 18 (%) 30 50 50 0 20 0 0 40 40 40 40 0 0 0 0 0 20 20 20 0 0 20 20 0 30 20 20 30 20 10 20 (pcf) 135.6 138.4 138.4 126.0 131.0 126.0 126.0 136.0 136.0 136.0 136.0 121.9 121.9 129.0 126.0 126.0 133.4 133.4 133.4 138.9 138.9 133.4 133.4 129.0 135.6 133.4 133.4 135.6 141.5 140.2 141.5 tm Adj. OMC (%) 7.2 7.5 7.5 12.0 10.1 12.0 12.0 8.4 8.4 8.4 8.4 12.5 12.5 9.6 12.0 12.0 8.0 8.0 8.0 7.6 7.6 8.0 8.0 9.6 7.2 8.0 8.0 7.2 6.8 7.2 6.8 Field Dry Dens. (pcO 127.1 125.7 126.6 113.9 118.2 115.8 115.4 128.6 126.5 126.8 126.4 111.8 110.3 115.7 114.6 113.7 118.9 123.0 125.7 127.4 132.4 121.2 124.5 116.4 128.2 119.8 122.4 123.6 125.1 130.6 131.6 Field Moist Cont. (%) 9.2 9.2 8.1 14.8 12.5 12.2 15.1 8.7 9.9 8.7 10.0 13.6 15.2 12.8 13.8 14.9 5.6 4.6 7.4 9.1 8.2 9.7 8.8 12.4 9.0 11.0 8.7 8.1 4.0 9.7 6.5 Field Rel. Comp. (%) 94 91 91 90 90 92 92 95 93 93 93 92 90 90 91 90 89 92 94 92 95 91 93 90 95 90 92 91 88 93 93 Req'd. Rel. Comp. (%) 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 Project No. 06105-52-20 August 14,2007 ii I. i_ I I li I i i i i i ti li i i ti i i 11 ft i ii TABLE 1 SUMMARY OF FIELD DENSITY TEST RESULTS Elev. Plus or 3/4" Adj. DePth Curve Rock MOD Test No. SZ SZ SZ SZ SZ SZ SZ SZ SZ SZ SZ 682 770 771 772 773 774 775 776 783 805 816 817 818 819 830 831 832 833 834 835 836 837 838 845 846 847 848 863 864 865 866 Date Location 08/08/06 Unit 3.3; Lot 1 15 08/23/06 Unit 3.3; Lot 110 08/23/06 Unit 3.3; Lot 110 08/23/06 Unit 3.3; Lot 110 08/23/06 Unit 3.3; Lot 110 08/23/06 Unit 3.3; Lot 109 08/23/06 Unit 3.3; Lot 109 08/23/06 Unit 3.3; Lot 110 08/25/06 Unit 3.3; Avenida Soledad 26+80 08/29/06 Unit 3.3; Lot 102 08/30/06 Unit 3.3; Lot 102 08/30/06 Unit 3.3; Lot 105 08/30/06 Unit 3.3; Lot 106 08/30/06 Unit 3.3; Lot 108 08/31/06 Unit 3.3; Lot 110 08/31/06 Unit 3.3; Lot 110 08/31/06 Unit 3.3; Lot 109 08/31/06 Unit 3.3; Lot 110 08/31/06 Unit 3.3; Lot 107 08/31/06 Unit 3.3; Lot 109 09/01/06 Unit 3.3; Lot 112 09/01/06 Unit 3.3; Lot 110 09/01/06 Unit 3.3; Lot 103 09/06/06 Unit 3.3; SD Easement 1 1+80 09/06/06 Unit 3.3; SO Easement 1 1+20 09/07/06 Unit 3.3; SD Easement 12+00 09/07/06 Unit 3.3; SD Easement 10+75 09/08/06 Unit 3. 3; Lot 99 09/08/06 Unit 3.3; Lot 99 09/08/06 Unit 3.3; SD Easement 10+40 09/11/06 Unit 3.3; SD Easement 11+80 (ft) 527 497 501 503 504 512 519 507 524 514 517 526 517 520 510 514 524 516 524 527 513 510 520 506 509 511 512 500 504 514 516 No. 18 7 7 3 3 4 4 4 9 4 9 9 9 9 4 4 4 4 4 4 4 4 9 3 3 3 3 3 3 8 8 (%) 10 20 20 30 30 40 40 30 40 30 30 40 30 30 50 50 40 50 50 40 50 50 20 30 30 30 30 30 30 40 40 (pcf) 140.2 136.8 136.8 135.6 135.6 136.0 136.0 133.5 144.9 133.5 143.7 144.9 143.7 143.7 138.4 138.4 136.0 138.4 138.4 136.0 138.4 138.4 142.5 135.6 135.6 135.6 135.6 135.6 135.6 137.3 137.3 Adj. OMC (%) 7.2 7.4 7.4 7.2 7.2 8.4 8.4 9.2 5.3 9.2 5.6 5.3 5.6 5.6 7.5 7.5 8.4 7.5 7.5 8.4 7.5 7.5 6.0 7.2 7.2 7.2 7.2 7.2 7.2 6.8 6.8 Field Dry Dens. (pcO 128.7 124.3 128.1 126.9 125.6 126.2 126.6 121.8 133.4 121.0 130.8 131.0 135.2 133.7 126.1 125.9 123.0 124.7 126.9 127.1 126.9 127.4 133.5 129.1 128.4 124.2 123.9 124.4 123.5 126.0 125.6 Field Moist. Cont. (%) 9.3 8.1 8.5 9.4 10.2 9.9 10.3 11.7 7.8 12.4 6.6 7.2 5.8 6.3 8.5 9.2 8.3 7.9 8.8 9.2 7.7 8.3 7.1 9.4 7.6 8.8 9.3 8.6 9.1 7.7 7.4 Field Rel. Comp. (%) 92 91 94 94 93 93 93 91 92 91 91 90 94 93 91 91 90 90 92 93 92 92 94 95 95 92 91 92 91 92 91 Req'd. Rel. Comp. (%) 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 Project No. 06105-52-20 August 14,2007 t f1f V V V Test No. 867 868 904 905 918 SZ 919 SZ 940 SZ 941 SZ 944 SZ 944 A SZ 945 SZ 945 A 946 SZ 947 SZ 948 SZ 969 SZ 970 SZ 971 SZ 972 SZ 973 974 975 985 986 987 988 989 994 995 1001 1002 tJ< Date 09/1 1/06 09/11/06 09/13/06 09/13/06 09/12/06 09/14/06 09/14/06 09/14/06 09/15/06 09/15/06 09/15/06 09/15/06 09/15/06 09/15/06 09/15/06 09/19/06 09/19/06 09/19/06 09/19/06 09/19/06 09/19/06 09/19/06 09/20/06 09/20/06 09/20/06 09/20/06 09/20/06 09/20/06 09/20/06 09/21/06 09/22/06 rVc f k f f'rVV r«'~~iilfffw SUMMARY OF Location Unit 3.3; SD Easement 10+75 Unit 3.3; SD Easement 12+00 Unit 3.3; Lot 114 Unit 3.3; Lot 113 Unit 3.3; Lot 1 13 Unit 3.3; Lot 99 Unit 3.3; Lot 100 Unit 3.3; Lot 101 Unit 3.3; Lot 99 Unit 3.3; Lot 99 Unit 3.3; Lot 100 Unit 3.3; Lot 100 Unit 3.3; Lot 19 Unit 3.3; Lot 61 Unit 3.3; Lot 61 Unit 3.3; Lot 61 Unit 3.3; Lot 61 Unit 3.3; Lot 62 Unit 3.3; Lot 61 Unit 3.3; Lot 62 Unit 3.3; Lot 61 Unit 3.3; Lot 62 Unit 3.3; Lot 61 Unit 3.3; Lot 62 Unit 3.3; Lot 99 Unit 3.3; Lot 100 Unit 3.3; Lot 111 Unit 3.3; Sitio Bahia 12+80 Unit 3.3; Sitio Bahia 13+10 Unit 3.3; Sitio Bahia 13+20 Unit 3.3; Sitio Bahia 13+80 i 1 iCf t ff f f TABLE 1 t irgf i r' t Af \r tr f f *-f f f€C f fC f t f f t f ff f f f f f FIELD DENSITY TEST RESULTS Elev. or Depth (ft) 519 524 527 528 523 507 509 512 513 513 515 515 538 487 491 494 496 499 503 508 511 513 516 519 514 517 517 616 614 618 616 Curve No. 8 8 3 8 8 6 6 6 6 6 6 6 8 8 8 6 7 6 6 6 7 6 7 7 7 6 6 9 1 1 1 Plus 3/4" Rock (%) 30 30 0 0 30 30 30 30 30 30 30 30 30 30 30 0 20 0 0 30 20 20 50 50 40 50 50 40 20 30 10 Adj. MOD (pcf) 135.0 135.0 129.0 128.1 135.0 130.5 130.5 130.5 130.5 130.5 130.5 130.5 135.0 135.0 135.0 121.9 136.8 121.9 121.9 130.5 136.8 127.6 142.3 142.3 140.5 136.2 136.2 144.9 135.0 137.0 132.9 Adj. OMC (%) 7.6 7.6 9.6 10.1 7.6 9. 9. 9. 9. 9. 9. 9. 7.6 7.6 7.6 12.5 7.4 12.5 12.5 9.1 7.4 10.2 5.6 5.6 6.2 7.1 7.1 5.3 7.9 7.2 8.6 Field Dry Dens, (pcf) 126.1 124.8 116.7 116.9 124.1 120.3 121.8 120.6 116.1 119.9 114.2 123.6 124.4 123.2 124.0 110.7 124.6 109.9 112.3 123.6 124.6 115.1 130.2 128.5 130.9 126.9 125.1 133.1 121.4 125.4 119.9 Field Moist. Cont. (%) 8.9 8.4 12.4 10.6 9.3 10.4 11.7 12.8 6.2 11.9 5.3 10.0 8.1 8.5 8.9 14.1 9.3 14.8 13.6 9.7 8.9 11.3 7.6 6.2 6.6 8.7 9.4 6.2 10.1 7.7 12.4 Field Rel. Comp. (%) 93 92 90 91 92 92 93 92 89 92 88 95 92 91 92 91 91 90 92 95 91 90 91 90 93 93 92 92 90 92 90 Req'd. Rel. Comp. (%) 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 Project No. 06105-52-20 August 14,2007 J -j t I i i ii i i ii t i ft J i 1 ft i fc i ft i ft i m i li kff r f f ™ » « a K » •» a B « ^M •" TABLE 1 ^M- •» 1 ^» •»JP SUMMARY OF FIELD DENSITY TEST RESULTS Test No. 1003 1010 1011 1012 1013 1014 1015 1016 1017 1018 1018A 1019 1020 1021 1022 1024 1025 1026 SZ 1027 1028 1029 1032 1033 SZ 1038 SZ 1040 SZ 1041 SZ 1042 SZ 1043 1044 1047 1048 Date 09/22/06 09/21/06 09/21/06 09/21/06 09/21/06 09/21/06 09/21/06 09/22/06 09/22/06 09/22/06 09/25/06 09/22/06 09/22/06 09/22/06 09/22/06 09/25/06 09/25/06 09/25/06 09/25/06 09/26/06 09/26/06 09/25/06 09/26/06 09/27/06 09/27/06 09/28/08 09/28/08 09/28/08 09/28/08 09/28/08 09/28/08 Location Unit 3.3; SitioBahia 12+75 Unit 3.3; Lot 110 Unit 3.3; Lot 112 Unit 3.3; Lot 1 1 1 Unit 3.3; Lot 110 Unit 3.3; Lot 107 Unit 3.3; Lot 105 Unit 3.3; Lot 61 Unit 3.3; Lot 62 Unit 3.3; Lot 63 Unit 3.3; Lot 63 Unit 3.3; Lot 112 Unit 3.3; Lot 110 Unit 3.3; Lot 112 Unit 3.3; Lot 110 Unit 3.3; Lot 103 Unit 3.3; Lot 105 Unit 3.3; Lot 109 Unit 3.3; Lot 1 10 Unit 3.3; Lot 61 Unit 3.3; Lot 62 Unit 3.3; Sitio Bahia 13+95 Unit 3.3; Sitio Bahia 13+00 Unit 3.3; Lot 104 Unit 3.3; Lot 103 Unit 3.3; Lot 105 Unit 3. 3; Lot 103 Unit 3.3; Lot 104 Unit 3.3; Lot 103 Unit 3.3; Lot 98 Unit 3.3; Lot 99 Elev. or Depth (ft) 618 519 521 524 522 526 527 518 520 522 522 525 526 528 530 524 529 530 528 520 523 618 520 505 508 511 514 516 518 510 513 Curve No. 1 6 4 4 4 6 6 7 7 7 7 6 6 8 8 8 8 6 6 6 6 1 1 4 4 4 4 4 4 6 4 Plus 3/4" Rock (%) 30 50 50 40 40 50 50 20 20 20 20 0 0 10 10 30 30 20 20 30 30 30 10 10 0 30 30 30 20 20 20 Adj. MOD (pcf) 137.0 136.2 138.4 136.0 136.0 136.2 136.2 136.8 136.8 136.8 136.8 121.9 121.9 130.4 130.4 135.0 135.0 127.6 127.6 130.5 130.5 137.0 132.9 128.5 126.0 133.5 133.5 133.5 131.0 127.6 131.0 Adj. OMC (%) 7.2 7.1 7.5 8.4 8.4 7.1 7.1 7.4 7.4 7.4 7.4 12.5 12.5 9.2 9.2 7.6 7.6 10.2 10.2 9.1 9.1 7.2 8.6 11.0 12.0 9.2 9.2 9.2 10.1 10.2 10.1 Field Dry Dens, (pcf) 126.4 122.8 126.3 123.7 125.5 126.9 124.1 126.6 125.1 120.6 125.0 111.8 110.5 119.6 120.0 124.3 126.7 116.7 115.9 119.1 120.3 126.6 120.1 115.8 114.8 120.4 125.6 120.9 118.2 114.7 119.0 Field Moist. Cont (%) 8.8 8.3 9.1 8.7 9.4 7.7 7.7 7.8 8.2 3.1 8.8 12.6 12.2 10.5 9.8 9.1 8.5 12.8 13.4 10.4 9.6 7.5 10.4 13.6 14.7 12.8 13.7 10.1 11.7 13.6 11.3 Field Rel. Comp. (%) 92 90 91 91 92 93 91 93 91 88 91 92 91 92 92 92 94 91 91 91 92 92 90 90 91 90 94 91 90 90 91 Req'd. Rel. Comp. (%) 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 Project No. 06105-52-20 August 14,2007 i i h Test No. SZ SZ sz sz sz sz sz sz sz sz sz sz 1050 1051 1058 1059 1070 1071 1072 1073 1074 1075 1076 1159 1160 1175 1176 1177 1178 1228 1231 1232 1233 1239 1240 1247 1266 1308 1327 1327 A 1328 1329 1329A SUMMARY Date Location 09/26/06 Unit 3.3; Lot 61 09/26/06 Unit 3.3; Sitio Colina 12+30 09/29/06 Unit 3.3; Lot 99 09/29/06 Unit 3.3; Lot 103 09/24/06 Unit 3.3; Lot 101 09/24/06 Unit 3.3; Lot 98 10/02/06 Unit 3.3; Lot 101 10/02/06 Unit 3.3; Lot 103 10/02/06 Unit 3.3; Lot 98 10/02/06 Unit 3.3; Lot 98 10/02/06 Unit 3.3; Lot 99 10/18/06 Unit 3.3; Sitio Colina 12+90 10/18/06 Unit 3.3; Sitio Colina 12+60 10/25/06 Unit 3.3; Sitio Colina 13+00 10/25/06 Unit 3.3; Sitio Colina 13+30 10/25/06 Unit 3.3; Sitio Colina 12+80 10/25/06 Unit 3.3; Sitio Colina 13+10 1 1/03/06 Unit 3.3; Sitio Colina 12+50 1 1/06/06 Unit 3.3; Sitio Colina 12+65 11/06/06 Unit 3.3; Sitio Colina 12+55 1 1/06/06 Unit 3.3 ; Sitio Colina 12+50 11/08/06 Unit 3.3; Lot 71 11/08/06 Unit 3.3; Lot 71 11/08/06 Unit 3.3; Lot 71 12/26706 Unit 3.3; Lot 48 11/20/06 Unit 3.3; Lot 71 11/21/06 Unit 3.3; Lot 61 11/22/06 Unit 3.3; Lot 61 11/21/06 Unit 3.3; Lot 63 11/22/06 Unit 3.3; Lot 63 11/27/06 Unit 3.3; Lot 63 TABLE 1 OF FIELD DENSITY TEST RESULTS Elev. or Depth (ft) 522 524 520 522 524 523 526 528 526 529 525 506 510 515 419 421 423 510 514 518 522 505 509 514 518 525 525 525 527 530 530 Curve No. 4 4 7 7 7 7 3 3 3 3 3 4 4 6 6 7 6 4 4 4 4 4 4 4 8 4 6 6 6 6 6 Plus 3/4" Rock 30 30 40 40 40 40 20 20 10 10 10 20 30 10 30 20 30 0 10 0 20 0 10 0 0 0 0 10 10 0 10 Adj. MOD (pcf) 133.5 133.5 140.5 140.5 140.5 140.5 133.4 133.4 131.2 131.2 131.2 131.0 133.5 124.8 130.5 136.8 130.5 126.0 128.5 126.0 131.0 126.0 128.5 126.0 128.1 126.0 121.9 124.8 124.8 121.9 124.8 Adj. OMC 9.2 9.2 6.2 6.2 6.2 6.2 8.0 8.0 8.8 8.8 8.8 10.1 9.2 11.3 9.1 7.4 9.1 12.0 11.0 12.0 10.1 12.0 11.0 12.0 10.1 12.0 12.5 11.3 11.3 12.5 11.3 Field Dry Dens, (pcf) 119.7 123.2 133.7 132.9 131.9 130.1 120.8 120.1 121.3 121.5 122.6 124.6 120.9 114.7 118.1 125.7 121.4 117.3 121.6 114.6 117.7 117.3 115.8 117.3 115.0 114.0 108.9 112.6 112.9 107.0 112.8 Field Moist. Cont. (%) 11.4 9.1 8.2 7.4 6.6 7.3 9.6 10.1 10.7 9.9 10.4 11.3 10.7 14.6 10.3 11.0 10.3 14.6 13.8 15.7 12.5 14.6 12.6 12.8 13.8 12.9 14.1 13.4 12.8 10.4 13.6 Field Rel. Comp. 90 92 95 95 94 93 91 90 92 93 93 95 91 92 90 92 93 93 95 91 90 93 90 93 90 90 89 90 90 88 90 Req'd. Rel. Comp. 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 Project No. 06105-52-20 August 14,2007 ' l '• » I > » ». «_ ! " » < il »l » I tf f f f» ^ \ ^ Test No. SZ 1330 SZ 1331 SZ 1332 SZ 1333 SZ 1334 SZ 1335 SZ 1336 SZ 1336A SZ 1337 SZ 1337 A 1338 1339 1340 1341 1347 1348 1349 FG 1360 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 f f 1f ^ ' Date 1 1/27/06 11/27/06 11/27/06 11/27/06 11/27/06 1 1/27/06 11/27/06 11/27/06 11/27/06 1 1/27/06 11/28/06 11/28/06 11/28/06 11/28/06 11/28/06 11/28/06 11/28/06 11/30/06 12/01/06 12/01/06 12/04/06 12/04/06 12/04/06 12/04/06 12/04/06 12/05/06 12/05/06 12/05/06 12/05/06 12/05/06 12/05/06 ^ — ™*» w • • m SUMMARY Location Unit 3.3; Lot 72 Unit 3.3; Lot 74 Unit 3.3; Lot 71 Unit 3.3; Lot 74 Unit 3.3; Sitio Colina 12+25 Unit 3.3; Sitio Colina 12+15 Unit 3. 3; Lot 72 Unit 3.3; Lot 72 Unit 3. 3; Lot 74 Unit 3. 3; Lot 74 Unit 3.3; Sitio Colina 12+20 Unit 3.3; Sitio Colina 13+10 Unit 3.3; Sitio Colina 12+05 Unit 3.3; Sitio Colina 12+00 Unit 3.3; Lot 71 Unit 3.3; Lot 73 Unit 3.3; Lot 71 Unit 3.3; Lot 115 Unit 3.3; Lot 61 Unit 3.3; Lot 63 Unit 3.3; Sitio Colina 14+20 Unit 3.3; Sitio Colina 15+90 Unit 3.3; Sitio Colina 13+40 Unit 3.3; Sitio Colina 15+45 Unit 3.3; Lot 70 Unit 3.3; Lot 67 Unit 3.3; Lot 69 Unit 3.3; Lot 66 Unit 3.3; Lot 68 Unit 3.3; Lot 70 Unit 3.3; Lot 68 mt m H; • TABLE! OF FIELD DENSITY TEST RESULTS Elev. Plus or 3/4" Adj. Depth Curvc Rock MOD (ft) 526 522 529 527 525 524 532 532 530 530 527 527 529 530 534 536 536 531 529 533 533 537 532 538 537 543 541 545 542 539 540 No. 7 7 7 6 7 7 7 7 7 7 6 6 7 7 7 7 7 8 7 7 3 8 8 4 3 18 18 18 18 18 18 (%) 10 30 30 0 20 20 0 30 20 30 0 20 10 40 10 30 30 0 30 20 20 0 0 30 0 10 10 40 20 20 20 (pcf) 135.0 138.7 138.7 121.9 136.8 136.8 133.2 138.7 136.8 138.7 121.9 127.6 135.0 140.5 135.0 138.7 138.7 128.1 138.7 136.8 133.4 128.1 128.1 133.5 129.0 140.2 140.2 144.1 141.5 141.5 141.5 Adj. OMC (%) 8.0 6.8 6.8 12.5 7.4 7.4 8.6 6.8 7.4 6.8 12.5 10.2 8.0 6.2 8.0 6.8 6.8 10.1 6.8 7.4 8.0 10.1 10.1 9.2 9.6 7.2 7.2 6.0 6.8 6.8 6.8 Field Dry Dens. (pcf) 124.3 128.6 125.9 110.4 124.3 127.0 121.4 125.0 120.4 126.7 111.6 115.1 121.6 130.8 121.8 127.3 125.1 116.9 125.4 124.7 120.8 115.2 118.6 120.2 116.4 131.6 134.7 131.6 128.3 127.3 127.8 Field Moist Cont. (%) 9.1 7.0 7.9 14.6 7.5 7.3 4.6 7.6 7.8 8.1 14.1 11.8 11.2 6.1 9.4 7.1 8.4 11.8 8.8 8.4 12.1 11.4 11.9 11.8 11.0 8.1 7.4 6.2 6.5 8.6 6.7 Field Rel. Comp. (%) 92 93 91 91 91 93 91 90 88 91 92 90 90 93 90 92 90 91 90 91 91 90 93 90 90 94 96 91 91 90 90 Req'd. Rel. Comp. (%) 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 Project No. 06105-52-20 August 14,2007 rVVIr "' rV'cUf f'cV« TABLE 1 V'< 1 /<'<v«mc',v<: U «§« SUMMARY OF FIELD DENSITY TEST RESULTS Test No. 1378 1379 1380 1381 1382 1383 FG 1399 FG 1400 FG 1401 FG 1402 FG 1403 FG 1404 FG 1405 FG 1406 FG 1407 FG 1408 FG 1409 FG 1410 FG 1411 FG 1412 SZ 1413 SZ 1414 SZ 1415 1416 1417 ST 1422 ST 1423 ST 1424 ST 1425 ST 1426 1428 Date 12/06/06 12/06/06 12/06/06 12/06/06 12/06/06 12/06/06 12/07/06 12/07/06 12/07/06 12/07/06 12/07/06 12/07/06 12/07/06 12/07/06 12/07/06 12/07/06 12/07/06 12/07/06 12/07/06 12/07/06 12/08/06 12/08/06 12/08/06 12/08/06 12/08/06 12/11/06 12/11/06 12/11/06 12/11/06 12/11/06 12/12/06 Location Unit 3.3; Lot 65 Unit 3.3; Lot 65 Unit 3.3; Lot 65 Unit 3.3; Sitio Colina 12+70 Unit 3.3; Lot 71 Unit 3.3; Lot 73 Unit 3.3; Lot 114 Unit 3.3; Lot 113 Unit 3.3; Lot 112 Unit 3.3; Lot 111 Unit 3.3; Lot 1 10 Unit 3.3; Lot 109 Unit 3.3; Lot 108 Unit 3.3; Lot 107 Unit 3.3; Lot 106 Unit 3.3; Lot 105 Unit 3.3; Lot 104 Unit 3.3; Lot 103 Unit 3.3; Lot 102 Unit 3.3; Lot 101 Unit 3.3; Lot 54 Unit 3.3; Lot 54 Unit 3.3; Lot 54 Unit 3.3; Lot 54 Unit 3.3; Lot 50 Unit 3.3; Lot 1 10/1 13 Easement Unit 3.3; Lot 109 Unit 3.3; Lot 105 Unit 3.3; Lot 104 Unit 3.3; Lot 101 Unit 3.3; Sitio Corazon 28+80 Elev. or Depth (ft) 544 546 543 533 538 544 530 529 529 529 532 532 532 531 530 530 530 529 529 529 503 508 507 510 512 513 522 521 520 520 517 Curve No. 18 18 18 18 18 18 8 8 8 8 8 6 6 6 6 8 8 3 3 3 6 7 7 6 7 6 6 6 6 6 18 Plus 3/4" Rock 30 20 10 10 30 20 0 0 10 0 10 0 0 10 0 0 10 0 10 10 0 30 10 30 40 10 10 30 0 20 30 Adj. MDD (pcf) 142.8 141.5 140.2 140.2 142.8 141.5 128.1 128.1 130.4 128.1 130.4 121.9 121.9 124.8 121.9 128.1 130.4 129.0 131.2 131.2 121.9 138.7 135.0 130.5 140.5 124.8 124.8 130.5 121.9 127.6 142.8 Adj. OMC 6.4 6.8 7.2 7.2 6.4 6.8 10.1 10.1 9.2 10.1 9.2 12.5 12.5 11.3 12.5 10.1 9.2 9.6 8.8 8.8 12.5 6.8 8.0 9.1 6.2 11.3 11.3 9.1 12.5 10.2 6.4 Field Dry Dens, (pcf) 130.6 133.0 128.6 130.4 130.1 128.6 115.5 118.3 118.2 116.0 117.2 110.4 112.6 112.7 110.1 115.5 120.0 116.5 121.6 125.4 109.5 127.3 123.1 121.8 131.2 113.7 112.6 117.6 111.2 115.5 131.7 Field Moist. Cont. 6.9 7.7 7.5 7.2 8.0 6.5 11.4 10.5 11.8 12.5 11.5 15.0 12.8 12.6 13.6 10.6 9.2 12.3 9.7 8.8 14.6 8.4 9.6 10.4 6.5 12.5 13.7 13.1 14.1 11.0 8.4 Field Rel. Comp. 91 94 92 93 91 91 90 92 91 91 90 91 92 90 90 90 92 90 93 96 90 92 91 93 93 91 90 90 91 91 92 Req'd. Rel. Comp. 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 Project No. 06105-52-20 August 14,2007 <Vt TABLE I SUMMARY OF FIELD DENSITY TEST RESULTS Test No. 1429 SZ 1430 SZ 1431 SZ 1431 A SZ 1433 SZ 1434 1435 1436 1436 A 1437 1438 FG 1457 FG 1458 FG 1459 FG 1460 FG 1461 FG 1462 FG 1463 ST 1464 SZ 1469 SZ 1470 ST 1471 SZ 1472 SZ 1473 1477 1478 1479 SZ 1480 SZ 1481 SZ 1482 1483 Date 12/12/06 12/12/06 12/12/06 12/12/06 12/13/06 12/13/06 12/13/06 12/13/06 12/13/06 12/13/06 12/13/06 12/19/06 12/19/06 12/19/06 12/19/06 12/19/06 12/19/06 12/19/06 12/19/06 12/20/06 12/20/06 12/20/06 12/21/06 12/21/06 12/22/06 12/26/06 12/26/06 12/27/06 12/27/06 12/27/06 12/27/06 Location Unit 3.3; Sitio Corazon 29+80 Unit 3.3; Pvt. SD Easement 36+80 Unit 3.3; Pvt SD Easement 36+80 Unit 3.3; Pvt. SD Easement 36+80 Unit 3.3; Lot 64 Unit 3.3; Lot 64 Unit 3.3; Lot 64 Unit 3.3; Lot 64 Unit 3.3; Lot 64 Unit 3.3; Lot 64 Unit 3.3; Lot 63 Unit 3.3; Lot 70 Unit 3.3; Lot 69 Unit 3. 3; Lot 68 Unit 3.3; Lot 67 Unit 3.3; Lot 66 Unit 3.3; Lot 65 Unit 3.3; Lot 64 Unit 3.3; Sitio Colina 12+75 Unit 3.3; SD Easement Unit 3.3; SD Easement Unit 3.3; Lot 64 Unit 3.3; SD Easement 35+30 Unit 3.3; SD Easement 35+30 Unit 3.3; Lot 50 Unit 3.3; Lot 48 Unit 3.3; Lot 50 Unit 3.3; Lot 31 Unit 3.3; Lot 31 Unit 3.3; Lot 31 Unit 3.3; Lot 31 Elev. or Depth (ft) 513 455 475 475 530 535 540 543 543 545 533 542 543 544 546 547 547 547 530 470 475 538 480 486 512 515 517 544 547 551 555 Curve No. 18 18 18 18 8 8 6 8 8 8 8 18 18 18 18 18 8 8 7 6 6 18 6 6 18 8 8 8 6 8 8 Plus 3/4" Rock (%) 30 0 10 10 10 30 0 0 0 10 0 0 0 30 20 20 0 0 10 0 10 20 0 0 10 0 0 0 20 10 10 Adj. MOD (PCf) 142.8 138.9 140.2 140.2 130.4 135.0 121.9 128.1 128.1 130.4 128.1 138.9 138.9 142.8 141.5 141.5 128.1 128.1 135.0 121.9 124.8 141.5 121.9 121.9 140.2 128.1 128.1 128.1 127.6 130.4 130.4 Adj. OMC (%) 6.4 7.6 7.2 7.2 9.2 7.6 12.5 10.1 10.1 9.2 10.1 7.6 7.6 6.4 6.8 6.8 10.1 10.1 8.0 12.5 11.3 6.8 12.5 12.5 7.2 10.1 10.1 10.1 10.2 9.2 9.2 Field Do- Dens. (pcf) 131.7 126.2 123.5 129.6 120.7 128.8 113.6 112.0 116.2 118.9 115.8 126.2 129.4 130.1 127.0 134.2 120.2 115.7 124.2 109.8 112.2 130.5 112.8 109.6 128.9 115.6 118.2 116.5 115.7 118.0 124.7 Field Moist. Cont. (%) 8.4 8.1 8.4 6.9 11.3 7.9 14.1 7.3 12.0 10.1 11.7 9.3 8.0 6.6 8.5 6.6 11.3 12.1 8.6 14.6 14.6 7.2 12.8 14.0 9.3 12.1 10.8 11.9 11.8 10.1 9.6 Field Rel. Comp. (%) 92 91 88 92 93 95 93 87 91 91 90 91 93 91 90 95 94 90 92 90 90 92 93 90 92 90 92 91 91 90 96 Req'd. Rel. Comp. (%) 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 Project No. 06105-52-20 August 14,2007 1 k r ' r V V Test No. 1484 1485 1486 1487 SZ 1488 SZ 1489 1490 1491 SZ 1492 SZ 1493 SZ 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 SZ 1506 1507 1508 1509 1510 1511 1512 1513 1514 n< Date 12/27/06 12/27/06 12/28/06 12/28/06 12/28/06 12/28/06 12/28/06 12/28/06 12/28/06 12/29/06 12/29/06 12/29/06 01/02/07 01/02/07 01/02/07 01/02/07 01/03/07 01/03/07 01/03/07 01/03/07 01/03/07 01/04/07 01/04/07 01/04/07 01/04/07 01/04/07 01/04/07 01/04/07 01/05/07 01/05/07 01/05/07 i i lit t i i i SUMMARY OF Location Unit 3.3; Lot 31 Unit 3.3; Lot 54 Unit 3.3; Lot 7 Unit 3.3; Lot 9 Unit 3.3; Lot 55 Unit 3.3; Lot 55 Unit 3 J; Lot 6 Unit 3.3; Lot 8 Unit 3.3; Lot 55 Unit 3.3; Pvt. SD Easement Unit 3.3; Lot 55 Unit 3.3; SD Easement Unit 3.3; Lot 95 Unit 3.3; Lot 94 Unit 3.3; Lot 97 Unit 3.3; Lot 97 Unit 3.3; Lot 97 Unit 3.3; Lot 7 Unit 3.3; Lot 9 Unit 3.3; Lot 55 Unit 3.3; Sitio Caliente 12+30 Unit 3.3; Sitio Caliente 1 1+35 Unit 3.3; Lot 97 Unit 3.3; Lot 85 Unit 3.3; Lot 87 Unit 3.3; Lot 86 Unit 3.3; Lot 85 Unit 3.3; Lot 86 Unit 3.3; Lot 87 Unit 3.3; Lot 19 Unit 3.3; Lot 96 i 1 i TABLE 1 t i 1 *' /<'<1 fc i C f f C f C f f C C f FIELD DENSITY TEST RESULTS Elev. or Depth (ft) 558 512 523 528 493 497 523 528 501 504 505 509 513 517 510 513 515 526 532 507 531 529 515 540 536 534 537 538 535 536 518 Curve No. 8 6 6 6 8 8 18 8 8 6 6 6 8 6 8 6 6 8 6 6 6 6 6 6 8 6 6 6 6 6 6 Plus 3/4" Rock 0 0 0 30 20 20 20 0 0 20 10 10 20 0 0 0 30 0 10 10 0 0 0 20 0 10 0 0 20 10 10 Adj. MDD (pcf) 128.1 121.9 121.9 130.5 132.7 132.7 141.5 128.1 128.1 127.6 124.8 124.8 132.7 121.9 128.1 121.9 130.5 128.1 124.8 124.8 121.9 121.9 121.9 127.6 128.1 124.8 121.9 121.9 127.6 124.8 124.8 Adj. OMC 10.1 12.5 12.5 9.1 8.4 8.4 6.8 10.1 10.1 10.2 il.3 11.3 8.4 12.5 10.1 12.5 9.1 10.1 11.3 11.3 12.5 12.5 12.5 10.2 10.1 11.3 12.5 12.5 10.2 11.3 11.3 Field Dry Dens, (pcf) 116.3 113.0 109.9 124.3 119.4 121.6 130.2 115.8 119.6 115.7 113.0 112.5 120.1 110.4 115.4 109.5 120.6 118.7 117.2 114.7 109.8 111.6 111.9 115.7 117.4 112.1 110.6 109.8 117.3 112.1 115.4 Field Moist. Cont. 11.9 12.8 14.1 9.7 8.8 8.4 7.5 11.6 10.5 11.3 13.7 14.1 10.3 14.7 9.7 14.0 11.8 10.6 13.5 12.6 14.0 13.2 15.4 11.1 12.9 14.3 13.1 14.6 12.8 13.0 11.8 Field Rel. Comp. 91 93 90 95 90 92 92 90 93 91 91 90 91 91 90 90 92 93 94 92 90 92 92 91 92 90 91 90 92 90 92 Req'd. Rel. Comp. 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 Project No. 06105-52-20 August 14,2007 r' r rVr V cc ' c'« VV I / <Vc VV <' «'V ' TABLE I SUMMARY OF FIELD DENSITY TEST RESULTS Test No. SZ 1515 SZ 1516 SZ 1517 SZ 1518 SZ 1519 SZ 1520 SZ 1521 SZ 1522 SZ 1523 SZ 1524 SZ 1525 SZ 1526 SZ 1532 SZ 1533 SZ 1534 SZ 1535 SZ 1536 SZ 1537 SZ 1538 SZ 1539 SZ 1540 SZ 1541 SZ 1542 SZ 1543 SZ 1544 SZ 1545 SZ 1546 SZ 1547 SZ 1548 SZ 1549 SZ 1550 Date 01/05/07 01/08/07 01/08/07 01/08/07 01/08/07 01/08/07 01/08/07 01/08/07 01/08/07 01/08/07 01/08/07 01/09/07 01/10/07 01/10/07 01/10/07 01/10/07 01/10/07 01/10/07 01/10/07 01/10/07 01/10/07 01/11/07 01/11/07 01/11/07 01/11/07 01/11/07 01/11/07 01/11/07 01/11/07 01/11/07 01/12/07 Location Unit 3.3; Lot 94 Unit 3.3; Lot 88 Unit 3.3; Lot 85 Unit 3.3; Lot 84 Unit 3.3; Lot 89 Unit 3.3; Lot 91 Unit 3.3; Lot 97 Unit 3.3; Lot 94 Unit 3.3; Lot 97 Unit 3.3; Lot 95 Unit 3.3; Lot 97 Unit 3.3; Lot 94 Unit 3.3; Lot 5 Unit 3.3; Lot 4 Unit 3.3; Lot 3 Unit 3.3; Lot 2 Unit 3.3; Lot 1 Unit 3.3; Lot 94 Unit 3.3; Lot 92 Unit 3.3; Lot 98 Unit 3.3; Lot 98 Unit 3.3; Lot 10 Unit 3.3; Lot 9 Unit 3.3; Lot 8 Unit 3.3; Lot 7 Unit 3.3; Lot 6 Unit 3.3; Lot 49 Unit 3. 3; Lot 48 Unit 3.3; Lot 47 Unit 3.3; Lot 31 Unit 3.3; Lot 94 Elev. or Depth (ft) 518 535 541 544 529 535 518 519 520 521 523 524 524 526 529 532 535 526 536 525 524 537 534 531 528 525 516 517 519 550 530 Curve No. 6 18 18 18 18 18 4 4 7 4 4 4 18 18 18 18 18 4 18 4 4 8 6 8 6 6 18 18 18 18 7 Plus 3/4" Rock (%) 10 30 10 10 10 20 0 30 20 20 10 10 10 30 20 20 20 20 40 10 10 0 20 10 0 0 20 30 30 30 10 Adj. MOD (pcf) 124.8 142.8 140.2 140.2 140.2 141.5 126.0 133.5 136.8 131.0 128.5 128.5 140.2 142.8 141.5 141.5 141.5 131.0 144.1 128.5 128.5 128.1 127.6 130.4 121.9 121.9 141.5 142.8 142.8 142.8 135.0 Adj. OMC (%) 11.3 6.4 7.2 7.2 7.2 6.8 12.0 9.2 7.4 10.1 11.0 11.0 7.2 6.4 6.8 6.8 6.8 10.1 6.0 11.0 11.0 10.1 10.2 9.2 12.5 12.5 6.8 6.4 6.4 6.4 8.0 Field Dry Dens, (pcf) 112.7 130.1 128.4 131.7 130.8 131.6 114.6 123.5 124.6 120.7 116.6 120.2 131.8 133.6 130.7 127.3 127.8 124.6 131.5 117.4 116.4 115.5 117.3 118.2 109.9 112.0 128.5 134.7 130.2 128.8 121.7 Field Moist. Cent. (%) 14.3 7.7 8.6 8.3 10.2 7.5 15.7 9.6 10. 1 11.9 14.0 11.7 7.0 6.4 6.8 8.4 7.5 11.3 6.3 12.1 11.7 11.3 11.8 10.7 13.1 12.6 7.3 6.1 6.8 6.6 9.3 Field Rel. Comp. (%) 90 91 92 94 93 93 91 93 91 92 91 94 94 94 92 90 90 95 91 91 91 90 92 91 90 92 91 94 91 90 90 Req'd. Rel. Comp. (%) 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 Project No. 06105-52-20 August 14,2007 TABLE I SUMMARY OF FIELD DENSITY TEST RESULTS Test No. SZ 1551 SZ 1552 SZ 1553 SZ 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 SZ 1569 SZ 1570 SZ 1571 SZ 1572 SZ 1573 SZ 1574 SZ 1575 ST 1576 1577 1578 1579 1580 1581 Date 01/12/07 01/12/07 01/12/07 01/12/07 01/15/07 01/15/07 01/15/07 01/15/07 01/15/07 01/15/07 01/16/07 01/16/07 01/16/07 01/16/07 01/16/07 01/16/07 01/16/07 01/16/07 01/17/07 01/17/07 01/17/07 01/17/07 01/17/07 01/17/07 01/17/07 01/18/07 01/18/07 01/18/07 01/18/07 01/19/07 01/19/07 Location Unit 3.3; Lot 96 Unit 3.3; Lot 95 Unit 3.3; Lot 90 Unit 3.3; Lot 92 Unit 3.3; Lot 91 Unit 3.3; Lot 90 Unit 3.3; Lot 89 Unit 3.3; Lot 97 Unit 3.3; Lot 96 Unit 3.3; Lot 95 Unit 3.3; Lot 94 Unit 3.3; Lot 93 Unit 3.3; Lot 94 Unit 3.3; Lot 93 Unit 3.3; Lot 57 Unit 3.3; Lot 97 Unit 3.3; Lot 96 Unit 3.3; Lot 95 Unit 3.3; Lot 81 Unit 3.3; Lot 79 Unit 3.3; Lot 81 Unit 3.3; Lot 78 Unit 3.3; Lot 80 Unit 3.3; Lot 79 Unit 3.3; Lot 76 Unit 3.3; Lot 94 Unit 3.3; Lot 55 Unit 3.3; Lot 55 Unit 3.3; Lot 55 Unit 3.3; Sitio Caliente 26+90 Unit 3.3; Sitio Caliente 26+05 Elev. or Depth (ft) 528 531 531 538 537 535 531 525 528 531 532 534 535 537 519 529 532 535 530 528 535 531 539 535 516 530 505 510 513 508 513 Curve No. 6 7 18 18 18 18 18 18 18 18 4 4 4 4 7 18 18 18 18 4 4 4 4 4 4 6 6 6 6 18 18 Plus 3/4" Rock 0 20 20 20 20 30 20 30 10 20 40 20 20 30 20 40 30 20 20 10 30 20 20 20 30 0 20 0 0 20 30 Adj. MDD (pcf) 121.9 136.8 141.5 141.5 141.5 142.8 141.5 142.8 140.2 141.5 136.0 131.0 131.0 133.5 136.8 144.1 142.8 141.5 141.5 128.5 133.5 131.0 131.0 131.0 133.5 121.9 127.6 121.9 121.9 141.5 142.8 Adj. OMC 12.5 7.4 6.8 6.8 6.8 6.4 6.8 6.4 7.2 6.8 8.4 10.1 10.1 9.2 7.4 6.0 6.4 6.8 6.8 11.0 9.2 10.1 10.1 10.1 9.2 12.5 10.2 12.5 12.5 6.8 6.4 Field Dry Dens, (pcf) 110.0 124.3 134.6 129.8 127.5 130.4 130.3 133.0 127.9 127.9 124.6 124.6 118.7 123.9 124.0 136.2 131.2 130.2 127.7 116.9 123.4 118.7 117.8 118.4 123.4 109.2 115.6 111.2 109.9 128.0 136.5 Field Moist. Cont. 14.6 8.1 7.0 8.5 7.7 9.3 8.1 7.2 7.5 7.8 9.3 11.2 10.6 13.2 8.7 6.4 6.7 7.1 8.4 13.8 10.1 13.2 12.6 13.6 10.4 15.3 11.8 12.6 14.3 7.2 6.5 Field Rel. Comp. 90 91 95 92 90 91 92 93 91 90 92 95 91 93 91 95 92 92 90 91 92 91 90 90 92 90 91 91 90 90 96 Req'd. Rel. Comp. 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 Project No. 06105-52-20 August 14,2007 TABLE I SUMMARY OF FIELD DENSITY TEST RESULTS Test No. 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 SZ 1592 1593 1594 SZ 1595 15% 1596 A 1597 SZ 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 Date 01/19/07 01/19/07 01/19/07 01/22/07 01/22/07 01/22/07 01/22/07 01/22/07 01/22/07 01/22/07 01/23/07 01/23/07 01/23/07 01/23/07 01/23/07 01/23/07 01/24/07 01/24/07 01/24/07 01/24/07 01/24/07 01/24/07 01/25/07 01/25/07 01/25/07 01/26/07 01/26707 01/26/07 01/26/07 01/29/07 01/29/07 Location Unit 3.3; Lot 53 Unit 3.3; Lot 52 Unit 3.3; Lot 54 Unit 3.3; Lot 50 Unit 3.3; Lot 54 Unit 3.3; Lot 53 Unit 3.3; Lot 52 Unit 3.3; Lot 55 Unit 3.3; Lot 56 Unit 3.3; Lot 58 Unit 3.3; Lot 79 Unit 3.3; Lot 81 Unit 3.3; Lot 82 Unit 3.3; Lot 76 Unit 3.3; Lot 79 Unit 3.3; Lot 79 Unit 3.3; Lot 81 Unit 3.3; Lot 76 Unit 3.3; Lot 78 Unit 3.3; Lot 80 Unit 3.3; Lot 76 Unit 3.3; Lot 75 Unit 3.3; Sitio Caliente 15+00 Unit 3.3; Sitio Caliente 14+00 Unit 3.3; Sitio Caliente 14+50 Unit 3.3; Lot 74 Unit 3. 3; Lot 72 Unit 3.3; Lot 71 Unit 3.3; Lot 73 Unit 3.3; Lot 78 Unit 3.3; Lot 81 Elev. or Depth (ft) 511 517 513 517 513 517 518 515 519 524 539 542 544 540 544 544 546 545 547 550 550 548 542 540 541 546 542 539 545 546 546 Curve No. 18 18 18 18 18 18 18 18 18 18 4 7 4 7 7 7 7 7 7 7 7 7 18 18 18 18 18 18 18 7 7 Plus 3/4" Rock (%) 30 10 20 30 30 20 40 10 30 30 0 20 20 30 20 20 20 30 20 40 40 20 10 40 10 20 20 30 30 40 10 Adj. MOD (pcf) 142.8 140.2 141.5 142.8 142.8 141.5 144.1 140.2 142.8 142.8 126.0 136.8 131.0 138.7 136.8 136.8 136.8 138.7 136.8 140.5 140.5 136.8 140.2 144.1 140.2 141.5 141.5 142.8 142.8 140.5 135.0 Adj. OMC (%) 6.4 7.2 6.8 6.4 6.4 6.8 6.0 7.2 6.4 6.4 12.0 7.4 10.1 6.8 7.4 7.4 7.4 6.8 7.4 6.2 6.2 7.4 7.2 6.0 7.2 6.8 6.8 6.4 6.4 6.2 8.0 Field Dry Dens. (pcf) 131.8 129.4 134.6 134.6 128.9 128.8 137.4 126.3 129.7 131.8 113.8 124.0 119.7 130.2 118.0 123.7 124.9 125.3 123.4 130.4 126.9 123.9 131.6 130.2 128.4 131.6 127.7 128.8 134.6 128.0 122.8 Field Moist. Cont. (%) 7.0 7.7 6.9 6.5 7.8 7.1 6.2 8.5 6.6 6.3 14.7 8.3 11.5 6.9 9.1 8.8 8.9 8.1 9.7 7.7 8.4 8.5 7.2 6.3 8.7 6.9 8.4 7.1 6.3 7.3 9.7 Field Rel. Comp. (%) 92 92 95 94 90 91 95 90 91 92 90 91 91 94 86 90 91 90 90 93 90 91 94 90 92 93 90 90 94 91 91 Req'd. Rel. Comp. (%) 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 Project No. 06105-52-20 August 14,2007 TABLE I SUMMARY OF FIELD DENSITY TEST RESULTS Test No. 1612 1613 1614 1615 1616 1617 FG 1618 FG 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 FG 1631 FG 1632 FG 1633 FG 1634 FG 1635 FG 1636 FG 1637 FG 1638 FG 1639 FG 1640 FG 1641 FG 1642 Date 01/29/07 01/29/07 01/29/07 01/30/07 01/30/07 01/30/07 02/21/07 02/21/07 01/30/07 01/30/07 01/31/07 01/31/07 01/31/07 01/31/07 01/31/07 01/31/07 01/31/07 01/31/07 01/31/07 02/01/07 02/01/07 02/01/07 02/01/07 02/01/07 02/01/07 02/01/07 02/01/07 02/01/07 02/01/07 02/01/07 02/01/07 Location Unit 3.3; Lot 79 Unit 3.3; Lot 82 Unit 3.3; Lot 80 Unit 3.3; Lot 79 Unit 3. 3; Lot 77 Unit 3.3; Lot 80 Unit 3.3; Lot 21 Unit 3.3; Lot 22 Unit 3.3; Lot 78 Unit 3.3; Lot 80 Unit 3.3; Lot 82 Unit 3.3; Sitio Caliente 22+25 Unit 3.3; Sitio Caliente 24+05 Unit 3.3; Lot 62 Unit 3.3; Lot 41 Unit 3.3; Lot 45 Unit 3.3; Lot 44 Unit 3.3; Lot 60 Unit 3.3; Lot 62 Unit 3.3; Lot 85 Unit 3.3; Lot 86 Unit 3.3; Lot 87 Unit 3.3; Lot 88 Unit 3.3; Lot 89 Unit 3. 3; Lot 90 Unit 3.3; Lot 91 Unit 3.3; Lot 92 Unit 3.3; Lot 100 Unit 3.3; Lot 99 Unit 3.3; Lot 98 Unit 3.3; Lot 97 Elev. or Depth (ft) 550 544 551 554 550 554 545 549 554 555 548 524 520 528 528 520 522 527 531 543 541 538 537 534 536 539 541 529 530 531 531 Curve No. 6 7 7 7 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 Plus 3/4" Rock (%) 0 20 20 30 20 30 40 30 30 30 10 10 20 30 30 10 10 20 30 30 20 30 20 10 10 10 30 20 20 20 40 Adj. MDD (pcf) 121.9 136.8 136.8 138.7 141.5 142.8 144.1 142.8 142.8 142.8 140.2 140.2 141.5 142.8 142.8 140.2 140.2 141.5 142.8 142.8 141.5 142.8 141.5 140.2 140.2 140.2 142.8 141.5 141.5 141.5 144.1 Adj. OMC (%) 12.5 7.4 7.4 6.8 6.8 6.4 6.0 6.4 6.4 6.4 7.2 7.2 6.8 6.4 6.4 7.2 7.2 6.8 6.4 6.4 6.8 6.4 6.8 7.2 7.2 7.2 6.4 6.8 6.8 6.8 6.0 Field Dry Dens, (pcf) 111.6 124.2 123.2 125.8 127.8 128.5 136.3 130.8 130.6 128.8 126.8 130.1 130.8 129.4 128.5 127.2 126.5 127.2 128.7 131.1 132.0 128.7 127.7 128.4 126.7 126.3 133.6 127.9 134.2 130.4 131.2 Field Moist. Cont. (%) 13.6 8.1 10.7 8.1 7.4 7.3 6.2 7.1 6.3 8.2 8.5 8.8 6.8 6.6 8.6 8.1 7.7 8.0 8.5 6.3 7.0 7.4 6.9 7.5 7.1 8.6 6.5 6.8 7.3 8.1 6.5 Field Rel. Comp. (%) 92 91 90 91 90 90 95 92 91 90 90 93 92 91 90 91 90 90 90 92 93 90 90 92 90 90 94 90 95 92 91 Req'd. Rel. Comp. (%) 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 Project No. 06105-52-20 August 14,2007 t r V V I V ' < '* '< H «Vf V«« Vi \ '< f «• « V TABLE I SUMMARY OF FIELD DENSITY TEST RESULTS Test No. FG 1643 FG 1644 FG 1645 FG 1646 FG 1647 FG 1648 FG 1649 FG 1650 FG 1651 FG 1652 FG 1653 FG 1654 ST 1655 ST 1656 ST 1657 ST 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 FG 1671 FG 1672 FG 1673 Date 02/01/07 02/01/07 02/01/07 02/02/07 02/02/07 02/02/07 02/02/07 02/02/07 02/02/07 02/02/07 02/02/07 02/02/07 02/05/07 02/05/07 02/05/07 02/05/07 02/05/07 02/05/07 02/06/07 02/06/07 02/06707 02/06/07 02/06/07 02/07/07 02/07/07 02/07/07 02/07/07 02/07/07 02/07/07 02/07/07 02/07/07 Location Unit 3.3; Lot 96 Unit 3.3; Lot 95 Unit 3.3; Lot 94 Unit 3.3; Lot 50 Unit 3.3; Lot 51 Unit 3.3; Lot 54 Unit 3.3; Lot 53 Unit 3.3; Lot 52 Unit 3.3; Lot 55 Unit 3.3; Lot 56 Unit 3.3; Lot 57 Unit 3.3; Lot 58 Unit 3.3; Sitio Colina 12+45 Unit 3.3; Lot 72 Unit 3.3; Lot 60 Unit 3.3; Lot 55 Unit 3.3; Sitio Caliente 17+10 Unit 3.3; Sitio Caliente 16+00 Unit 3.3; Lot 81 Unit 3.3; Sitio Caliente 17+95 Unit 3.3; Lot 79 Unit 3.3; Lot 83 Unit 3.3; Sitio Caliente 20+40 Unit 3.3; Sitio Caliente 19+10 Unit 3.3; Sitio Caliente 20+80 Unit 3.3; Lot 74 Unit 3.3; Lot 72 Unit 3.3; Lot 72 Unit 3.3; Lot 59 Unit 3.3; Lot 60 Unit 3.3; Lot 61 Elev. or Depth (ft) 534 536 539 519 521 515 519 522 518 521 524 526 528 538 515 510 547 548 548 546 553 545 532 538 534 544 540 543 526 529 531 Curve No. 18 18 18 18 18 18 18 18 18 18 18 18 7 6 7 6 4 4 4 7 18 18 18 18 18 18 18 18 18 18 18 Plus 3/4" Rock (%) 20 20 30 10 30 20 20 20 20 10 30 30 30 0 10 10 10 0 20 30 10 10 20 20 20 10 10 30 10 20 20 Adj. MDD (pcf) 141.5 141.5 142.8 140.2 142.8 141.5 141.5 141.5 141.5 140.2 142.8 142.8 138.7 121.9 135.0 124.8 128.5 126.0 131.0 138.7 140.2 140.2 141.5 141.5 141.5 140.2 140.2 142.8 140.2 141.5 141.5 Adj. OMC (%) 6.8 6.8 6.4 7.2 6.4 6.8 6.8 6.8 6.8 7.2 6.4 6.4 6.8 12.5 8.0 11.3 11.0 12.0 10.1 6.8 7.2 7.2 6.8 6.8 6.8 7.2 7.2 6.4 7.2 6.8 6.8 Field Dry Dens. (pcf) 127.3 128.4 128.5 131.1 133.2 131.1 127.8 127.2 133.0 131.7 130.1 128.9 125.7 109.6 125.7 112.2 120.3 113.8 120.0 125.7 126.3 131.2 131.7 127.8 127.3 133.0 129.7 129.5 132.3 131.4 128.9 Field Moist. Cont. (%) 7.8 8.5 7.7 7.7 6.4 7.6 7.3 8.2 7.7 7.0 6.7 8.4 8.1 15.4 8.3 14.1 11.8 14.0 12.8 7.1 8.4 7.3 8.4 6.9 7.4 8.4 7.6 6.6 8.0 7.2 6.5 Field Rel. Comp. (%) 90 91 90 94 93 93 90 90 94 94 91 90 91 90 93 90 94 90 92 91 90 94 93 90 90 95 93 91 94 93 91 Req'd. Rel. Comp. (%) 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 Project No. 06105-52-20 August 14,2007 iff I i i t, i i J t fc i i i • ifmr r <« **• TABLE 1 SUMMARY OF FIELD DENSITY TEST RESULTS Elev. Plus or 3/4" Adj. Depth Curve Rock MOD Test No. FG 1674 FG 1675 1676 FG 1677 FG 1678 FG 1679 FG 1680 1681 1682 1683 1684 1685 1686 FG 1687 FG 1688 FG 1689 FG 1690 FG 1691 ST 1692 FG 1693 FG 1694 FG 1695 FG 1696 FG 1697 FG 1698 FG 1699 FG 1700 FG 1701 FG 1704 FG 1705 1706 Date 02/07/07 02/07/07 02/08/07 02/09/07 02/09/07 02/09/07 02/09/07 12/12/07 12/12/07 12/12/07 12/12/07 02/12/07 02/12/07 02/13/07 02/13/07 02/13/07 02/13/07 02/13/07 02/13/07 02/13/07 02/13/07 02/13/07 02/13/07 02/13/07 02/13/07 02/15/07 02/15/07 02/15/07 02/21/07 02/21/07 02/22/07 Location Unit 3.3; Lot 62 Unit 3.3; Lot 63 Unit 3.3; Lot 24 Unit 3.3; Lot 93 Unit 3.3; Lot 84 Unit 3.3; Lot 83 Unit 3.3; Lot 82 Unit 3.3; Sitio Caliente 13+20 Unit 3.3; Lot 21 Unit 3.3; Lot 23 Unit 3.3; Lot 43 Unit 3.3; Lot 21 Unit 3.3; Lot 23 Unit 3.3; Lot 81 Unit 3.3; Lot 80 Unit 3.3; Lot 79 Unit 3.3; Lot 78 Unit 3.3; Lot 77 Unit 3.3; Lot 79 Unit 3.3; Lot 71 Unit 3.3; Lot 72 Unit 3.3; Lot 73 Unit 3.3; Lot 74 Unit 3.3; Lot 75 Unit 3.3; Lot 76 Unit 3.3; Lot 46 Unit 3.3; Lot 47 Unit 3.3; Lot 44 Unit 3.3; Lot 19 Unit 3.3; Lot 20 Unit 3.3; Sitio Altura 1 1+00 (ft) 533 535 551 542 543 548 549 539 541 547 527 543 549 552 556 558 555 552 537 541 544 547 548 549 552 520 522 523 540 543 547 No. 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 4 18 18 18 18 18 18 18 18 18 18 18 18 (%) 20 20 30 30 20 30 20 30 10 20 20 20 40 10 10 10 30 20 0 30 30 20 30 30 20 20 20 20 20 20 10 (pcf) 141.5 141.5 142.8 142.8 141.5 142.8 141.5 142.8 140.2 141.5 141.5 141.5 144.1 140.2 140.2 140.2 142.8 141.5 126.0 142.8 142.8 141.5 142.8 142.8 141.5 141.5 141.5 141.5 141.5 141.5 140.2 Adj. OMC (%) 6.8 6.8 6.4 6.4 6.8 6.4 6.8 6.4 7.2 6.8 6.8 6.8 6.0 7.2 7.2 7.2 6.4 6.8 12.0 6.4 6.4 6.8 6.4 6.4 6.8 6.8 6.8 6.8 6.8 6.8 7.2 Field Dry Dens. (pcf) 131.0 131.4 131.9 128.6 128.9 133.4 134.7 130.0 126.4 127.8 129.9 129.1 136.8 131.3 127.7 128.4 128.7 130.3 113.9 131.9 131.2 127.9 128.3 133.7 132.6 128.1 129.5 127.6 129.1 127.5 134.7 ^* m Field Moist. Com. (%) 7.2 6.5 7.7 7.0 6.7 6.5 7.6 7.4 8.5 8.6 7.2 7.5 6.1 7.0 7.6 9.2 6.3 7.7 14.7 6.6 7.1 8.7 8.4 6.9 7.0 6.6 8.2 8.9 6.7 7.2 7.7 •* • Field Rel. Comp. (%) 93 93 92 90 91 93 95 91 90 90 92 91 95 94 91 92 90 92 90 92 92 90 90 94 94 91 92 90 91 90 % Req'd. Rel. Comp. (%) 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 Project No. 06105-52-20 August 14,2007 r ' r V r H.r'cVVH,r'rVr M <V< TABLE 1 vv *'u<'r VV n <v<\tt< SUMMARY OF FIELD DENSITY TEST RESULTS Test No. 1707 1708 FG 1709 FG 1710 FG 1711 FG 1712 FG 1713 FG 1714 1715 1716 FG 1717 FG 1718 FG 1719 FG 1720 FG 1721 FG 1722 FG 1723 FG 1724 FG 1725 1726 1727 1728 1729 1730 1731 1732 1733 FG 1734 FG 1735 FG 1736 FG 1737 Date 02/22/07 02/22/07 02/22/07 02/22/07 02/23/07 02/23/07 02/23/07 02/23/07 02/28/07 02/28/07 03/01/07 03/01/07 03/01/07 03/01/07 03/01/07 03/02/07 03/02/07 03/02/07 03/02/07 03/02/07 03/02/07 03/02/07 03/02/07 03/05/07 03/05/07 03/05/07 03/05/07 03/05/07 03/05/07 03/06/07 03/06/07 Location Unit 3.3; Sitio Altura 1 1+20 Unit 3.3; Sitio Altura 1 1+50 Unit 3.3; Lot 25 Unit 3.3; Lot 24 Unit 3.3; Lot 26 Unit 3.3; Lot 27 Unit 3.3; Lot 34 Unit 3.3; Lot 37 Unit 3.3; Lot 38 Unit 3.3; Lot 39 Unit 3.3; Lot 23 Unit 3.3; Lot 24 Unit 3.3; Lot 25 Unit 3.3; Lot 26 Unit 3.3; Lot 27 Unit 3.3; Lot 28 Unit 3.3; Lot 29 Unit 3.3; Lot 30 Unit 3.3; Lot 31 Unit 3.3; Lot 37 Unit 3.3; Lot 35 Unit 3.3; Lot 34 Unit 3.3; Lot 32 Unit 3.3; Lot 40 Unit 3.3; Lot 41 Unit 3.3; Lot 42 Unit 3.3; Lot 43 Unit 3.3; Lot 32 Unit 3.3; Lot 33 Unit 3.3; Lot 34 Unit 3.3; Lot 35 Elev. or Depth (ft) 549 550 553 552 555 556 553 552 540 537 551 554 557 557 558 558 560 560 561 552 555 556 558 534 532 529 528 559 558 557 556 Curve No, 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 Plus 3/4" Rock (%) 10 30 20 20 20 10 20 10 10 30 30 30 20 40 40 10 30 20 20 10 10 10 20 20 40 10 10 30 20 20 20 Adj.Adj. MOD OMC (pcf) 140.2 142.8 141.5 141.5 141.5 140.2 141.5 140.2 140.2 142.8 142.8 142.8 141.5 144.1 144.1 140.2 142.8 141.5 141.5 140.2 140.2 140.2 141.5 141.5 144.1 140.2 140.2 142.8 141.5 141.5 141.5 (%) 7.2 6.4 6.8 6.8 6.8 7.2 6.8 7.2 7.2 6.4 6.4 6.4 6.8 6.0 6.0 7.2 6.4 6.8 6.8 7.2 7.2 7.2 6.8 6.8 6.0 7.2 7.2 6.4 6.8 6.8 6.8 Field Dry Dens. (pcf) 126.7 131.4 127.0 129.8 128.4 131.2 127.8 131.3 131.8 130.6 134.2 131.7 130.4 132.5 129.5 126.1 134.7 130.6 134.8 126.6 126.9 130.5 132.4 130.1 131.7 132.8 128.6 133.6 127.2 128.6 127.7 Field Moist. Cont. (%) 7.3 6.6 7.6 6.9 8.1 8.9 9.1 7.9 7.5 6.5 6.3 9.0 6.7 6.9 8.0 8.5 6.4 6.8 7.3 8.4 7.1 7.5 6.9 6.7 6.3 7.4 7.3 6.5 7.8 9.3 6.9 Field Rel. Comp. (%) 90 92 90 92 91 94 90 94 94 91 94 92 92 92 90 90 94 92 95 90 91 93 94 92 91 95 92 94 90 91 90 Req'd. Rel. Comp. (%) 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 V Project No. 06105-52-20 August 14,2007 t 1\ TABLE I SUMMARY OF FIELD DENSITY TEST RESULTS Test No. FG FG FG FG FG FG FG FG 1738 1739 1740 1741 1742 1743 1744 1745 Date 03/06/07 03/06/07 03/07/07 03/07/07 03/07/07 03/07/07 03/08/07 03/08/07 Location Unit 3.3; Lot 36 Unit 3.3; Lot 37 Unit 3.3; Lot 38 Unit 3.3; Lot 39 Unit 3.3; Lot 40 Unit 3.3; Lot 41 Unit 3.3; Lot 42 Unit 3.3; Lot 43 Elev. or Depth (ft) 557 554 542 539 535 533 531 529 Curve No. 18 18 18 18 18 18 18 18 Plus 3/4" Rock (%) 20 30 10 10 20 40 40 10 Adj. MOD (pcf) 141.5 142.8 140.2 140.2 141.5 144.1 144.1 140.2 Adj. CMC (%) 6.8 6.4 7.2 7.2 6.8 6.0 6.0 7.2 Field Dry Dens, (pcf) 131.7 129.1 126.7 130.8 128.0 130.6 129.8 130.4 Field Moist. Cont. (%) 6.5 7.8 8.3 7.2 7.4 6.1 7.3 7.7 Field Rel. Comp. (%) 93 90 90 93 90 91 90 93 Req'd. Rel. Comp. (%) 90 90 90 90 90 90 90 90 Project No. 06105-52-20 August 14,2007 II I i t i I 1 ti k i fe i li tl t 1 1J ii TABLE I EXPLANATION OF CODED TERMS - TEST SUFFIX A, B, C,...: Retest of previous density test failure, following moisture conditioning and/or recompaction. - STRIKE-OUT Fill in area of density test failure was removed and replaced with properly compacted fill soil. - PREFIX CODE DESIGNATION FOR TEST NUMBERS FG - FINISH GRADE MT - MOISTURE TEST ST - SLOPE TEST SZ - SLOPE ZONE -CURVE NO. Corresponds to curve numbers listed in the summary of laboratory maximum dry density and optimum moisture content test results table for selected fill soil samples encountered during testing and observation. - ROCK CORRECTION For density tests with rock percentage greater than zero, laboratory maximum dry density and optimum moisture content were adjusted for rock content. For tests with rock content equal to zero, laboratory maximum dry density and optimum moisture content values are unadjusted. - TYPE OF TEST SC: Sand Cone Test (ASTM D1556) NU: Nuclear Density Test (ASTM D2922) OT: Other - ELEVATION/DEPTH Test elevations/depths have been rounded to the nearest whole foot. Project No. 06105-52-20 August 14,2007 -^TABLE II SUMMARY OF LABORATORY MAXIMUM DRY DENSITY AND OPTIMUM MOISTURE CONTENT TEST RESULTS ASTM D 1557-02 Sample No. 1 3 4 5 6 7 8 9 18 Description Olive brown, Silty SAND Dark brown, Clayey, fine to coarse SAND Grayish brown, Clayey, fine to coarse SAND Olive brown, fine Sandy CLAY Reddish brown, Silty to Clayey, fine to medium SAND Yellowish brown, Silty, fine to coarse SAND Olive gray, clayey to silty, fine to medium SAND Dark olive brown, fine to coarse, Sandy GRAVEL Light reddish brown, Silty to Clayey, fine to coarse SAND Maximum Dry Density (pcf) 130.9 129.0 126.0 119.9 121.9 133.2 128.1 140.2 138.9 Optimum Moisture Content (% dry weight) 9.3 9.6 12.0 13.4 12.5 8.6 10.1 6.7 7.6 TABLE III SUMMARY OF LABORATORY EXPANSION INDEX TEST RESULTS ASTM D 4829-03 Sample No. EI-AT EI-AU EI-AV EI-AW EI-AX EI-AY EI-AZ EI-BA EI-BL EI-BM EI-BO EI-BP EI-BQ EI-BR EI-BS Moisture Content Before Test (%) 10.7 10.3 11.7 11.6 12.1 8.4 8.1 7.8 8.0 7.7 9.0 7.7 8.9 7.9 7.7 After Test (%) 20.6 20.3 23.1 22.6 23.4 13.4 13.3 11.8 14.1 13.7 18.3 13.8 15.0 13.5 12.6 Dry Density (pcf) 106.3 106.7 102.7 105.5 105.1 117.7 118.0 118.3 118.0 118.7 113.1 118.4 113.6 118.4 118.5 Expansion Index 21 18 35 45 44 0 0 0 0 0 11 0 0 1 1 UBC Classification Low Very Low Low Low Low Very Low Very Low Very Low Very Low Very Low Very Low Very Low Very Low Very Low Very Low Project No. 06105-52-20 August 14, 2007 TABLE IV SUMMARY OF LABORATORY DIRECT SHEAR TEST RESULTS ASTM D 3080-04 Sample No. 1 3 4 Dry Density (pel) 117.2 115.5 114.3 Moisture Content (%) 9.9 10.2 11.1 Unit Cohesion (psf) 650 520 490 Angle of Shear Resistance (degrees) 38 39 38 Samples remolded to a dry density of approximately 90 percent of the laboratory maximum dry density near to slightly above optimum moisture content. TABLE V SUMMARY OF LABORATORY WATER-SOLUBLE SULFATE TEST RESULTS CALIFORNIA TEST NO. 417 Sample No. EI-AT EI-AU EI-AV EI-AW EI-AX EI-AY EI-AZ EI-BA EI-BL EI-BQ Water-Soluble Sulfate (%) 0.026 0.016 0.021 0.036 0.041 0.005 0.005 0.011 0.033 0.016 Sulfate Exposure Negligible Negligible Negligible Negligible Negligible Negligible Negligible Negligible Negligible Negligible TABLE VI SUMMARY OF FINISH-GRADE EXPANSION INDEX TEST RESULTS VILLAGES OF LA COSTA-THE OAKS NORTH, NEIGHBORHOOD 3.3 SOUTH LOTS 19 THROUGH 35 AND LOTS 80 THROUGH 115 Lot No. 19 through 23 24 through 27 28 through 31 32 through 34 35 through 37 Sample at Finish Grade EI-BO EI-BP EI-BQ EI-BR EI-BS Expansion Index 11 0 0 1 1 UBC Classification Very Low Very Low Very Low Very Low Very Low Project No. 06105-52-20 August 14,2007 TABLE VI (Continued) SUMMARY OF FINISH-GRADE EXPANSION INDEX TEST RESULTS VILLAGES OF LA COSTA -THE OAKS NORTH, NEIGHBORHOOD 3.3 SOUTH LOTS 19 THROUGH 35 AND LOTS 80 THROUGH 115 Lot No. 80 and 81 82 through 84 85 through 88 89 through 92 93 94 through 96 97 through 101 102 through 105 106 through 109 110 through 112 113 through 115 Sample at Finish Grade EI-BM EI-BL EI-BA EI-AZ EI-BL EI-AY EI-AX EI-AW EI-AV EI-AU EI-AT Expansion Index 0 0 0 0 0 0 44 45 35 18 21 UBC Classification Very Low Very Low Very Low Very Low Very Low Very Low Low Low Low Very Low Low TABLE VII SUMMARY OF AS-GRADED BUILDING PAD CONDITIONS VILLAGES OF LA COSTA-THE OAKS NORTH, NEIGHBORHOOD 3.3 LOTS 19 THROUGH 35 AND LOTS 80 THROUGH 115 Lot No. 19 20 21 22 23 24 25 26 27 28 29 30 31 Pad Condition Undercut due to hard rock Undercut due to hard rock Undercut due to hard rock Undercut due to hard rock Undercut due to hard rock Undercut due to hard rock Undercut due to hard rock Undercut due to hard rock Undercut due to hard rock Undercut due to hard rock Undercut due to hard rock Undercut due to cut-fill transition Undercut due to cut-fill transition Approximate Maximum Depth of Fill (feet) 4 4 4 5 4 4 4 4 5 4 5 7 18 Approximate Maximum Depth of Fill Differential (feet) 1 1 1 1 1 1 1 1 1 1 2 3 15 Project No. 06105-52-20 August 14, 2007 TABLE VII (Continued) SUMMARY OF AS-GRADED BUILDING PAD CONDITIONS VILLAGES OF LA COSTA-THE OAKS NORTH, NEIGHBORHOOD 3.3 LOTS 19 THROUGH 35 AND LOTS 80 THROUGH 115 Lot No. 32 33 34 35 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 Pad Condition Undercut due to hard rock Undercut due to hard rock Undercut due to hard rock Undercut due to hard rock Fill Fill Fill Undercut due to cut-fill transition Undercut due to cut-fill transition Undercut due to cut-fill transition Undercut due to cut-fill transition Undercut due to cut-fill transition Undercut due to cut-fill transition Undercut due to cut-fill transition Undercut due to cut-fill transition Undercut due to cut-fill transition Fill Fill Fill Fill Fill Fill Fill Fill Fill Fill Fill Fill Fill Fill Fill Fill Approximate Maximum Depth of Fill (feet) 4 4 4 5 16 14 17 17 6 10 7 5 10 11 8 11 12 14 33 30 23 31 33 31 29 31 28 29 28 26 12 11 Approximate Maximum Depth of Fill Differential (feet) 1 1 1 2 2 3 6 7 2 4 3 2 6 7 4 6 4 6 11 13 7 10 13 10 9 9 6 6 5 14 3 1 Project No. 06105-52-20 August 14,2007 TABLE VII (Continued) SUMMARY OF AS-GRADED BUILDING PAD CONDITIONS VILLAGES OF LA COSTA-THE OAKS NORTH, NEIGHBORHOOD 3.3 LOTS 19 THROUGH 35 AND LOTS 80 THROUGH 115 Lot No. 108 109 110 111 112 113 114 115 Pad Condition Fill Fill Fill Fill Fill Fill Fill Fill Approximate Maximum Depth of Fill (feet) 16 20 44 26 40 43 41 40 Approximate Maximum Depth of Fill Differential (feet) 2 0 21 17 30 14 6 13 Project No. 06105-52-20 August 14, 2007