MONK & ASSOCIATES Environmental Consultants BIOLOGICAL RESOURCES CONSTRAINTS ANALYSIS THE VERANDA AT INDIAN SPRINGS 1522, 1510, 1506, 1502, 1504 LINCOLN AVE CALISTOGA, CALIFORNIA July 16, 2020 Prepared for Metropolitan Planning Group 1303 Jefferson Street, Suite 100-B Napa, California 94559 Attention: Ms. Olivia Ervin Prepared by Monk & Associates, Inc. 1136 Saranap Avenue, Suite Q Walnut Creek, California 94595 Contact: Ms. Sarah Lynch 1136 Saranap Ave., Suite Q Walnut Creek California 94595 (925) 947-4867 FAX (925) 947-1165 Biological Resources Constraints Analysis MONK & ASSOCIATES The Veranda at Indian Springs 1522, 1510, 1506, 1502, 1504 Lincoln Ave Calistoga, California APNs 011‐034‐003; ‐004; -005; ‐006; ‐021; ‐022; 028; ‐029 TABLE OF CONTENTS 1. INTRODUCTION ............................................................................................................................ 1 2. PROPOSED PROJECT .................................................................................................................... 1 3. STUDY METHODS ......................................................................................................................... 1 4. EXISTING SITE CONDITIONS AND SURROUNDING LAND USES .................................... 2 4.1 Evaluation for Waters of the U.S. and Waters of the State .................................................... 3 4.1.1 APPLICABILITY TO THE PROJECT SITE..................................................................................... 3 5. SPECIAL-STATUS SPECIES ISSUES .......................................................................................... 4 5.1 Special-Status Plants ................................................................................................................ 5 5.1.1 CALISTOGA POPCORNFLOWER (PLAGIOBOTHRYS STRICTUS) ................................................... 6 5.1.2 NAPA BLUE GRASS (POA NAPENSIS) ........................................................................................ 7 5.2 Special-Status Animals ............................................................................................................ 8 5.2.1 PALLID BAT (ANTROZOUS PALLIDUS) ....................................................................................... 8 6. FEDERAL MIGRATORY BIRD TREATY ACT .......................................................................... 9 6.1 Applicability to the Project Site .............................................................................................. 9 7. CALIFORNIA FISH AND GAME CODE § 3503, 3503.5, 3511, AND 3513 .............................. 9 7.1 Applicability to the Project Site .............................................................................................. 9 8. CALIFORNIA FISH AND GAME CODE §1602 ........................................................................ 10 8.1 Applicability to the Project Site ............................................................................................ 10 9. CITY OF CALISTOGA TREE ORDINANCE ............................................................................. 11 9.1 Applicability to the Project Site ............................................................................................ 14 10. CITY OF CALISTOGA GENERAL PLAN OPEN SPACE AND CONSERVATION ELEMENT ..................................................................................................................................... 15 C. Goals, Objectives, Policies And Actions ............................................................................... 15 10.1 Goal OSC-1. Conserve The Value And Function Of Calistoga's Open Space As A Biological Resource ..................................................................................................................... 15 10.1.1 OBJECTIVE OSC-1.1 MAINTAIN BIODIVERSITY WITHIN THE PLANNING AREA WITH SPECIAL EMPHASIS ON SPECIES THAT ARE SENSITIVE, RARE, DECLINING, UNIQUE OR REPRESENT VALUABLE BIOLOGICAL RESOURCES. ....................................................................... 15 10.1.2 APPLICABILITY TO THE PROPOSED PROJECT ...................................................................... 15 10.1.3 OBJECTIVE OSC-1.2 MINIMIZE IMPACTS TO SENSITIVE NATURAL HABITATS INCLUDING RIPARIAN FOREST AND SCRUB, FRESHWATER MARSH ASSOCIATED WITH DRAINAGES AND GEOTHERMAL AREAS, OAK WOODLAND AND SAVANNAH, AND NATIVE GRASSLANDS. ............... 16 10.1.4 APPLICABILITY TO THE PROPOSED PROJECT ...................................................................... 16 10.1.5 OBJECTIVE OSC-1.3 CONSERVE CALISTOGA’S NATIVE TREES AND VEGETATION, WHICH ARE IMPORTANT BIOLOGICAL AND AESTHETIC RESOURCES WITHIN THE PLANNING AREA. ....... 17 10.1.6 APPLICABILITY TO THE PROPOSED PROJECT ...................................................................... 17 10.1.7 OBJECTIVE OSC-1.4 COORDINATE WITH OTHER LEVELS OF GOVERNMENT AND INTERESTED AGENCIES TO PRESERVE NATURAL RESOURCES. ....................................................... 17 10.1.8 APPLICABILITY TO THE PROPOSED PROJECT ...................................................................... 18 10.1.9 OBJECTIVE OSC-1.5 PREVENT THE DEGRADATION AND LOSS OF CALISTOGA’S WETLAND AREAS. ............................................................................................................................................. 18 10.1.10 APPLICABILITY TO THE PROPOSED PROJECT .................................................................... 18 11. IMPACT ASSESSMENT AND PROPOSED MITIGATION ................................................... 19 11.1 CEQA Checklist Items ........................................................................................................ 19 11.2 Impacts and Mitigation Measures ....................................................................................... 20 i Biological Resources Constraints Analysis MONK & ASSOCIATES The Veranda at Indian Springs 1522, 1510, 1506, 1502, 1504 Lincoln Ave Calistoga, California APNs 011‐034‐003; ‐004; -005; ‐006; ‐021; ‐022; 028; ‐029 11.2.1 IMPACT BIO-1. IMPLEMENTATION OF THE PROJECT MAY HAVE A POTENTIALLY SIGNIFICANT ADVERSE IMPACT ON PROTECTED TREES (POTENTIALLY SIGNIFICANT) .............. 20 11.2.2 MITIGATION MEASURE BIO-1. MITIGATION FOR POTENTIAL IMPACTS TO PROTECTED TREES .............................................................................................................................................. 20 11.2.3 IMPACT BIO-2. IMPLEMENTATION OF THE PROJECT MAY HAVE A POTENTIALLY SIGNIFICANT ADVERSE IMPACT ON THE ENDANGERED CALISTOGA POPCORN FLOWER (PLAGIOBOTHRYS STRICTUS) AND NAPA BLUE GRASS (POA NAPENSIS) (POTENTIALLY SIGNIFICANT) .................................................................................................................................. 21 11.2.4 MITIGATION MEASURE BIO-2. MITIGATION FOR POTENTIAL IMPACTS TO CALISTOGA POPCORN FLOWER AND NAPA BLUE GRASS ................................................................................. 22 11.2.5 IMPACT BIO-3. IMPLEMENTATION OF THE PROJECT MAY HAVE A POTENTIALLY SIGNIFICANT ADVERSE IMPACT ON SPECIAL-STATUS BATS (POTENTIALLY SIGNIFICANT) ....... 22 11.2.6 MITIGATION MEASURE BIO-3. MITIGATION FOR POTENTIAL IMPACTS TO SPECIAL- STATUS BATS .................................................................................................................................. 22 11.2.7 IMPACT BIO-4. IMPLEMENTATION OF THE PROJECT MAY RESULT IN ADVERSE IMPACTS TO NESTING BIRDS (POTENTIALLY SIGNIFICANT) ......................................................................... 23 11.2.8 MITIGATION MEASURE BIO-4. MITIGATION FOR POTENTIAL IMPACTS TO NESTING BIRDS ......................................................................................................................................................... 23 11.2.9 IMPACT BIO-5. IMPLEMENTATION OF THE PROJECT MAY HAVE A POTENTIALLY SIGNIFICANT INDIRECT IMPACT ON OFFSITE WATERS OF THE UNITED STATES AND/OR STATE AND/OR CDFW JURISDICTIONAL AREAS (POTENTIALLY SIGNIFICANT) ...................................... 24 11.2.10 MITIGATION MEASURE BIO-5. AVOIDANCE MEASURES FOR POTENTIAL INDIRECT IMPACTS TO OFFSITE WATERS OF THE UNITED STATES AND/OR STATE AND/OR CDFW JURISDICTIONAL AREAS ................................................................................................................. 24 12. LITERATURE CITED ................................................................................................................. 26 FIGURES (At Back of Report) Figure 1. Regional Map of the Veranda at Indian Springs Project Site. Figure 2. the Veranda at Indian Springs Project Site Location. Figure 3. Aerial photograph of the Veranda at Indian Springs Project Site. Figure 4. Closest Known Records for Special-Status Species Within 3 Miles of the Veranda at Indian Springs Project Site. Figure 5. Plant Communities/Vegetation Types of the Veranda at Indian Springs Project Site. EXHIBIT (At Back of Report) Exhibit A. Proposed Location of Orange Construction Fencing to Protect Offsite Features ii Biological Resources Constraints Analysis MONK & ASSOCIATES The Veranda at Indian Springs 1522, 1510, 1506, 1502, 1504 Lincoln Ave Calistoga, California APNs 011‐034‐003; ‐004; -005; ‐006; ‐021; ‐022; 028; ‐029 TABLES (At Back of Report) Table 1. Plant Species Observed on the Veranda at Indian Springs Project Site. Table 2. Wildlife Species Observed on the Veranda at Indian Springs Project Site. Table 3. Special-Status Plant Species Known to Occur Within Three Miles of the