Is there a way I could combine these scripts? If so, how?

Script is toggled with a UI button. If the prefab is on top of the Water element, it should be red/unplaceable. If not, it is green and placeable.

Script 1:

 using UnityEngine;
 using System.Collections;
 
 public class BuildPlanet : MonoBehaviour {
 
 
     public GameObject PlaceVis;
     public GameObject Water;
     Transform PlaceVisMove;
     ForTrigger fortrigger;
     
     
     // Use this for initialization
     void Start () {
         PlaceVis = (GameObject)Instantiate(Resources.Load("temperateoutpost1transparent"));
         PlaceVisMove = PlaceVis.transform;
         fortrigger = Water.GetComponent<ForTrigger>();
     
     }
     
     // Update is called once per frame
     void Update () {
         //re-enables the object if previously disabled
         PlaceVis.SetActive(true);
         Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
         RaycastHit hit;
         if (Physics.Raycast(ray, out hit))
         {
             Vector3 Placement = hit.point;
             PlaceVisMove.position = Placement;
             PlaceVisMove.up = hit.normal;
             //transform up is for rotation
             if (!fortrigger.isContact && Input.GetMouseButtonDown(0))
             {
                 Instantiate(Resources.Load("temperateoutpost1"), Placement, PlaceVis.transform.rotation);
                 PlaceVis.SetActive(false);
                 
                 enabled = false;
             }
             
             if (Input.GetMouseButtonDown(1))
             {
                 PlaceVis.SetActive(false);
                 enabled = false;
             }
             if (Input.GetMouseButtonDown(0) && fortrigger.isContact)
             {
                 PlaceVis.SetActive(false);
                 enabled = false;
             }
             
         }
     }
 }

Script 2 (This script was directly on the Water element):

 using UnityEngine;
 using System.Collections;
 
 public class ForTrigger : MonoBehaviour {
 
 
 
     public bool isContact = false;
 
     
     public GameObject UserBuilding;
     public Material Red;
     public Material Green;
     
     // Use this for initialization
     void Start () {
     //finds the moving prefab, and declares it as variable UserBuilding on start
     UserBuilding = GameObject.Find("temperateoutpost1transparent(Clone)");
     //UserBuilding is the transparent prefab moved by mouse
     Material Green = Resources.Load<Material>("Materials/Green");
     Material Red = Resources.Load<Material>("Materials/Red");
     UserBuilding.GetComponent<MeshRenderer>().material = Green;
     
     }
     
     // Update is called once per frame
     void Update () {
         
     }
     
     void OnTriggerEnter(Collider col)
     {
         UserBuilding = GameObject.Find("temperateoutpost1transparent(Clone)");
         //if in contact, flip isContact so in BuildPlanet.cs you cannot place the prefab in that location
         if (col.gameObject.name == "temperateoutpost1transparent(Clone)")
         {
             isContact = true;
             UserBuilding.GetComponent<MeshRenderer>().material = Red;
         }
     }
         
         
         
     void OnTriggerExit(Collider col)
     {
         //coroutine instead of standard boolean and rend.material.color because C# doesn't like it for some reason
         StartCoroutine("BoolChanger");
     }
     
     IEnumerator BoolChanger()
     {
         UserBuilding = GameObject.Find("temperateoutpost1transparent(Clone)");
         yield return new WaitForSeconds(0.0f);
         isContact = false;
         UserBuilding.GetComponent<MeshRenderer>().material = Green;
     }
 }

C#. Thanks!